Mercurial > ecos
changeset 332:7c1c8dc43ba1
Now witness the firepower of this fully armed and operational
synthetic target.
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new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/ChangeLog @@ -0,0 +1,35 @@ +2002-08-07 Bart Veer <bartv@ecoscentric.com> + + * synthetic target ethernet driver package created + +//=========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//===========================================================================
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/cdl/syntheth.cdl @@ -0,0 +1,143 @@ +# ==================================================================== +# +# syntheth.cdl +# +# Synthetic target ethernet package. +# +# ==================================================================== +#####ECOSGPLCOPYRIGHTBEGIN#### +## ------------------------------------------- +## This file is part of eCos, the Embedded Configurable Operating System. +## Copyright (C) 2002 Bart Veer +## +## eCos is free software; you can redistribute it and/or modify it under +## the terms of the GNU General Public License as published by the Free +## Software Foundation; either version 2 or (at your option) any later version. +## +## eCos is distributed in the hope that it will be useful, but WITHOUT ANY +## WARRANTY; without even the implied warranty of MERCHANTABILITY or +## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +## for more details. +## +## You should have received a copy of the GNU General Public License along +## with eCos; if not, write to the Free Software Foundation, Inc., +## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +## +## As a special exception, if other files instantiate templates or use macros +## or inline functions from this file, or you compile this file and link it +## with other works to produce a work based on this file, this file does not +## by itself cause the resulting work to be covered by the GNU General Public +## License. However the source code for this file must still be made available +## in accordance with section (3) of the GNU General Public License. +## +## This exception does not invalidate any other reasons why a work based on +## this file might be covered by the GNU General Public License. +## +## Alternative licenses for eCos may be arranged by contacting the +## copyright holder(s). +## ------------------------------------------- +#####ECOSGPLCOPYRIGHTEND#### +# ==================================================================== +######DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Original data: bartv +# Contributors: +# Date: 2002-08-07 +# +#####DESCRIPTIONEND#### +# ==================================================================== + +cdl_package CYGPKG_DEVS_ETH_ECOSYNTH { + display "Synthetic target ethernet driver" + description " + The ethernet driver for the eCos synthetic target allows applications + and other packages such as a TCP/IP stack to perform ethernet I/O. + This can involve either an unused ethernet device, or an emulated + ethernet device as provided by the Linux kernel's tunnel/tap + support. The eCos code interacts with a suitable Linux application + through the I/O auxiliary. Up to four ethernet devices are + supported, and the host-side target definition file controls how + each device will perform its I/O." + + parent CYGPKG_IO_ETH_DRIVERS + active_if CYGPKG_IO_ETH_DRIVERS + active_if CYGPKG_HAL_SYNTH + + cdl_option CYGVAR_DEVS_ETH_ECOSYNTH_ETH0 { + display "Provide eth0 device" + description " + The synthetic target can provide up to four ethernet devices, + eth0 to eth3. By default eth0 is enabled when a TCP/IP stack + is part of the configuration, disabled otherwise." + default_value CYGPKG_NET_STACK + implements CYGHWR_NET_DRIVERS + implements CYGHWR_NET_DRIVER_ETH0 + } + + cdl_option CYGVAR_DEVS_ETH_ECOSYNTH_ETH1 { + display "Provide eth1 device" + description " + The synthetic target can provide up to four ethernet devices, + eth0 to eth3. By default eth1 is always disabled, but can + be enabled if the eCos application needs more than one ethernet + device." + default_value 0 + implements CYGHWR_NET_DRIVERS + implements CYGHWR_NET_DRIVER_ETH1 + } + + cdl_option CYGVAR_DEVS_ETH_ECOSYNTH_ETH2 { + display "Provide eth2 device" + description " + The synthetic target can provide up to four ethernet devices, + eth0 to eth3. By default eth2 is always disabled, but can + be enabled if the eCos application needs more than two ethernet + devices." + default_value 0 + implements CYGHWR_NET_DRIVERS + } + + cdl_option CYGVAR_DEVS_ETH_ECOSYNTH_ETH3 { + display "Provide eth3 device" + description " + The synthetic target can provide up to four ethernet devices, + eth0 to eth3. By default eth3 is always disabled, but can + be enabled if the eCos application needs more than three ethernet + devices." + default_value 0 + implements CYGHWR_NET_DRIVERS + } + + cdl_component CYGPKG_DEVS_ETH_ECOSYNTH_OPTIONS { + display "Build options" + active_if { CYGVAR_DEVS_ETH_ECOSYNTH_ETH0 || CYGVAR_DEVS_ETH_ECOSYNTH_ETH1 || CYGVAR_DEVS_ETH_ECOSYNTH_ETH2 || CYGVAR_DEVS_ETH_ECOSYNTH_ETH3 } + flavor none + compile -library=libextras.a syntheth.c + description " + Package-specific build options including control over compiler + flags used only in building this package." + + cdl_option CYGPKG_DEVS_ETH_ECOSYNTH_CFLAGS_ADD { + display "Additional compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building this package. These flags are used in addition + to the set of global flags." + } + cdl_option CYGPKG_DEVS_ETH_ECOSYNTH_CFLAGS_REMOVE { + display "Suppressed compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building this package. These flags are removed from + the set of global flags if present." + } + } +} +
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/doc/devs-eth-synth-ecosynth.html @@ -0,0 +1,912 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of substantively modified versions of this --> +<!-- document is prohibited without the explicit permission of the --> +<!-- copyright holder. --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Synthetic Target Ethernet Driver</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><H1 +><A +NAME="DEVS-ETH-SYNTH-ECOSYNTH">Synthetic Target Ethernet Driver</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN4" +></A +><H2 +>Name</H2 +>Synthetic Target Ethernet Support -- Allow synthetic target applications to perform ethernet I/O</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="AEN7" +></A +><H2 +>Overview</H2 +><P +>The synthetic target ethernet package can provide up to four network +devices, <TT +CLASS="VARNAME" +>eth0</TT +> to <TT +CLASS="VARNAME" +>eth3</TT +>. These can +be used directly by the eCos application or, more commonly, by a +TCP/IP stack that is linked with the eCos application. Each eCos +device can be mapped on to a real Linux network device. For example, +if the Linux PC has two ethernet cards and <TT +CLASS="VARNAME" +>eth1</TT +> is +not currently being used by Linux itself, then one of the eCos devices +can be mapped on to this Linux device. Alternatively, it is possible +to map some or all of the eCos devices on to the ethertap support +provided by the Linux kernel. + </P +><P +>The ethernet package depends on the I/O auxiliary provided by the +synthetic target architectural HAL package. During initialization the +eCos application will attempt to instantiate the desired devices, by +sending a request to the auxiliary. This will load a Tcl script +<TT +CLASS="FILENAME" +>ethernet.tcl</TT +> that is responsible for handling the +instantiation request and subsequent I/O operations, for example +transmitting an ethernet packet. However, some of the low-level I/O +operations cannot conveniently be done by a Tcl script so +<TT +CLASS="FILENAME" +>ethernet.tcl</TT +> will actually run a separate program +<B +CLASS="COMMAND" +>rawether</B +> to interact with the Linux network device. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN17"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="overview.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>On the target-side there are configuration options to control which +network devices should be present. For many applications a single +device will be sufficient, but if the final eCos application is +something like a network bridge then the package can support multiple +devices. On the host-side each eCos network device needs to be mapped +on to a Linux one, either a real ethernet device or an ethertap +device. This is handled by an entry in the target definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + eth0 real eth1 + eth1 ethertap tap3 00:01:02:03:FE:05 + … +}</PRE +></TD +></TR +></TABLE +><P +>The ethernet package also comes with support for packet logging, +and provides various facilities for use by user Tcl scripts. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-INSTALL" +></A +><H2 +>Installation</H2 +><P +>Before a synthetic target eCos application can access ethernet devices +it is necessary to build and install host-side support. The relevant +code resides in the <TT +CLASS="FILENAME" +>host</TT +> +subdirectory of the synthetic target ethernet package, and building it +involves the standard <B +CLASS="COMMAND" +>configure</B +>, +<B +CLASS="COMMAND" +>make</B +> and <B +CLASS="COMMAND" +>make install</B +> steps. +The build involves a new executable <B +CLASS="COMMAND" +>rawether</B +> which +must be able to access a raw Linux network device. This is achieved by +installing it suid root, so the <B +CLASS="COMMAND" +>make install</B +> step +has to be run with superuser privileges. + </P +><DIV +CLASS="CAUTION" +><P +></P +><TABLE +CLASS="CAUTION" +BORDER="1" +WIDTH="100%" +><TR +><TD +ALIGN="CENTER" +><B +>Caution</B +></TD +></TR +><TR +><TD +ALIGN="LEFT" +><P +>Installing <B +CLASS="COMMAND" +>rawether</B +> suid root introduces a +potential security problem. Although normally +<B +CLASS="COMMAND" +>rawether</B +> is executed only by the I/O auxiliary, +theoretically it can be run by any program. Effectively it gives any +user the ability to monitor all ethernet traffic and to inject +arbitrary packets into the network. Also, as with any suid root +programs there may be as yet undiscovered exploits. Users and system +administrators should consider the risks before running <B +CLASS="COMMAND" +>make +install</B +>. + </P +></TD +></TR +></TABLE +></DIV +><P +>There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the ethernet support, +in a single build tree. This involves using the +<B +CLASS="COMMAND" +>configure</B +> script at the toplevel of the eCos +repository. For more information on this, see the +<TT +CLASS="FILENAME" +>README.host</TT +> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target ethernet support then it will be necessary to +rerun the toplevel configure script: the search for appropriate +packages happens at configure time. + </P +><P +>The alternative is to build just the host-side for this package. +This requires a separate build directory, building directly in the +source tree is disallowed. The <B +CLASS="COMMAND" +>configure</B +> options +are much the same as for a build from the toplevel, and the +<TT +CLASS="FILENAME" +>README.host</TT +> file can be consulted for more +details. It is essential that the ethernet support be configured with +the same <TT +CLASS="OPTION" +>--prefix</TT +> option as other eCos host-side +software, especially the I/O auxiliary provided by the architectural +synthetic target HAL package, otherwise the I/O auxiliary will be +unable to locate the ethernet support. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-OPTIONS" +></A +><H2 +>Target-side Configuration Options</H2 +><P +>The target-side code can be configured to support up to four ethernet +devices, <TT +CLASS="VARNAME" +>eth0</TT +> to <TT +CLASS="VARNAME" +>eth3</TT +>. By +default <TT +CLASS="VARNAME" +>eth0</TT +> is enabled if the configuration +includes a TCP/IP stack, otherwise it is disabled. The other three +devices are always disabled by default. If any of the devices are +enabled then there will also be the usual configuration options +related to building this package. Other options related to network +devices, for example whether or not to use DHCP, are provided by +the generic network device package. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-REAL" +></A +><H2 +>Real Ethernet</H2 +><P +>One obvious way of providing a synthetic target eCos application with +ethernet I/O is to use a real ethernet device in the PC: transmitted +packets go out on a real network, and packets on the network addressed +to the right MAC address are passed on to eCos. This way synthetic +target networking behaves just like networking on a real target with +ethernet hardware. For example, if there is a DHCP server anywhere on +the network then eCos will be able to contact it during networking +startup and get hold of IP address information. + </P +><P +>Configuring the ethernet support to use a real ethernet device +requires a simple entry in the target definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + <eCos device> real <linux device> + … +}</PRE +></TD +></TR +></TABLE +><P +>For example, to map the eCos network device <TT +CLASS="VARNAME" +>eth0</TT +> to +the Linux device <TT +CLASS="VARNAME" +>eth1</TT +>: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + eth0 real eth1 + … +}</PRE +></TD +></TR +></TABLE +><P +>It is not possible for an ethernet device to be shared by both the +eCos TCP/IP stack and the Linux one: there would be no simple way to +work out which stack incoming packets are intended for. In theory +it might be possible to do some demultiplexing using distinct IP +addresses, but it would be impossible to support some functionality +such as DHCP. Therefore the <B +CLASS="COMMAND" +>rawether</B +> program will +refuse to access any ethernet device already in use. On a typical +Linux system <TT +CLASS="VARNAME" +>eth0</TT +> will be used for Linux +networking, and the PC will have to be equipped with additional +ethernet devices for use by eCos. + </P +><P +>The <B +CLASS="COMMAND" +>rawether</B +> program will access the hardware via +the appropriate Linux device driver, so it is important that the +system is set up such that the relevant module will be automatically +loaded or is already loaded. The details of this will depend on the +installed distribution and version, but typically it will involve an +entry in <TT +CLASS="FILENAME" +>/etc/modules.conf</TT +>. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-ETHERTAP" +></A +><H2 +>Ethertap</H2 +><P +>The Linux kernel's ethertap facility provides a virtual network +interface. A Linux application, for example the +<B +CLASS="COMMAND" +>rawether</B +> program, can open a special character +device <TT +CLASS="FILENAME" +>/dev/net/tun</TT +>, perform various +<TT +CLASS="FUNCTION" +>ioctl</TT +> calls, and then <TT +CLASS="FILENAME" +>write</TT +> +and <TT +CLASS="FILENAME" +>read</TT +> ethernet packets. When the device is +opened the Linux kernel automatically creates a new network interface, +for example <TT +CLASS="VARNAME" +>tap0</TT +>. The Linux TCP/IP stack can be +made to use this network interface like any other interface, receiving +and transmitting ethernet packets. The net effect is a virtual network +connecting just the Linux and eCos TCP/IP stacks, with no other nodes +attached. By default all traffic remains inside this virtual network +and is never forwarded to a real network. + </P +><P +>Support for the ethertap facility may or may not be provided +automatically, depending on your Linux distribution and version. If +your system does not have a device <TT +CLASS="FILENAME" +>/dev/net/tun</TT +> +or a module <TT +CLASS="FILENAME" +>tun.o</TT +> then the appropriate kernel +documentation should be consulted, for example +<TT +CLASS="FILENAME" +>/usr/src/linux-2.4/Documentation/networking/tuntap.txt</TT +>. + </P +><P +>The target definition file is used to map eCos network devices on to +ethertap devices. The simplest usage is: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + eth0 ethertap + … +}</PRE +></TD +></TR +></TABLE +><P +>The Linux kernel will automatically allocate the next available tap +network interface. Usually this will be <TT +CLASS="VARNAME" +>tap0</TT +> but if +other software is using the ethertap facility, for example to +implement a VPN, then a different number may be allocated. Usually it +will be better to specify the particular tap device that should be +used for each eCos device, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + eth0 ethertap tap3 + eth1 ethertap tap4 + … +}</PRE +></TD +></TR +></TABLE +><P +>The user now knows exactly which eCos device is mapped onto which +Linux device, avoiding much potential confusion. Because the virtual +devices are emulated ethernet devices, they require MAC addresses. +There is no physical hardware to provide these addresses, so normally +MAC addresses will be invented. That means that each time the eCos +application is run it will have different MAC addresses, which makes +it more difficult to compare the results of different runs. To get +more deterministic behaviour it is possible to specify the MAC +addresses in the target definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + eth0 ethertap tap3 00:01:02:03:FE:05 + eth1 ethertap tap4 00:01:02:03:FE:06 + … +}</PRE +></TD +></TR +></TABLE +><P +>During the initialization phase the eCos application will instantiate +the various network devices. This will cause the I/O auxiliary to load +the <TT +CLASS="FILENAME" +>ethernet.tcl</TT +> script and spawn +<B +CLASS="COMMAND" +>rawether</B +> processes, which in turn will +<TT +CLASS="FUNCTION" +>open</TT +> <TT +CLASS="FILENAME" +>/dev/net/tun</TT +> and +perform the appropriate <TT +CLASS="FILENAME" +>ioctl</TT +> calls. On the Linux +side there will now be new network interfaces such as +<TT +CLASS="VARNAME" +>tap3</TT +>, and these can be configured like any other +network interface using commands such as <B +CLASS="COMMAND" +>ifconfig</B +>. +In addition, if the Linux system is set up with hotplug support then +it may be possible to arrange for the network interface to become +active automatically. On a Red Hat Linux system this would require +files such as +<TT +CLASS="FILENAME" +>/etc/sysconfig/network-scripts/ifcfg-tap3</TT +>, +containing data like: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>DEVICE="tap3" +BOOTPROTO="none" +BROADCAST=10.2.2.255 +IPADDR="10.2.2.1" +NETMASK="255.255.255.0" +NETWORK=10.2.2.0 +ONBOOT="no"</PRE +></TD +></TR +></TABLE +><P +>This gives the Linux interface the address <TT +CLASS="LITERAL" +>10.2.2.1</TT +> +on the network <TT +CLASS="LITERAL" +>10.2.2.0</TT +>. The eCos network device +should be configured with a compatible address. One way of doing this +would be to enable <TT +CLASS="VARNAME" +>CYGHWR_NET_DRIVER_ETH0_ADDRS</TT +>, +set <TT +CLASS="VARNAME" +>CYGHWR_NET_DRIVER_ETH0_ADDRS_IP</TT +> to +<TT +CLASS="LITERAL" +>10.2.2.2</TT +>, and similarly update the +<TT +CLASS="VARNAME" +>NETMASK</TT +>, <TT +CLASS="VARNAME" +>BROADCAST</TT +>, +<TT +CLASS="VARNAME" +>GATEWAY</TT +> and <TT +CLASS="VARNAME" +>SERVER</TT +> configuration +options. + </P +><P +>It should be noted that the ethertap facility provides a virtual +network, and any packets transmitted by the eCos application will +not appear on a real network. Therefore usually there will no +accessible DHCP server, and eCos cannot use DHCP or BOOTP to obtain IP +address information. Instead the eCos configuration should use manual +or static addresses. + </P +><P +>An alternative approach would be to set up the Linux box as a network +bridge, using commands like <B +CLASS="COMMAND" +>brctl</B +> to connect the +virtual network interface <TT +CLASS="VARNAME" +>tap3</TT +> to a physical +network interface such as <TT +CLASS="VARNAME" +>eth0</TT +>. Any packets sent by +the eCos application will get forwarded automatically to the real +network, and some packets on the real network will get forwarded over +the virtual network to the eCos application. Note that the eCos +application might also get some packets that were not intended for it, +but usually those will just be discarded by the eCos TCP/IP stack. The +exact details of setting up a network bridge are left as an exercise +to the reader. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-LOGGING" +></A +><H2 +>Packet Logging</H2 +><P +>The ethernet support comes with support for logging the various +packets that are transferred, including a simple protocol analyser. +This generates simple text output using the filter mechanisms provided +by the I/O auxiliary, so it is possible to control the appearance and +visibility of different types of output. For example the user might +want to see IPv4 headers and all ICMPv4 and ARP operations, but not +TCP headers or any of the packet data. + </P +><P +>The protocol analyser is not intended to be a fully functional +analyser with knowledge of many different TCP/IP protocols, advanced +search facilities, graphical traffic displays, and so on. +Functionality like that is already provided by other tools such as +<SPAN +CLASS="APPLICATION" +>ethereal</SPAN +> and +<SPAN +CLASS="APPLICATION" +>tcpdump</SPAN +>. Achieving similar levels of +functionality would require a lot of work, for very little gain. It is +still useful to have some protocol analysis functionality available +because the output will be interleaved with other output, for example +<TT +CLASS="FILENAME" +>printf</TT +> calls from the application. That may make +it easier to understand the sequence of events. + </P +><P +>One problem with logging ethernet traffic is that it can involve very +large amounts of data. If the application is expected to run for a +long time or is very I/O intensive then it is easy to end up with many +megabytes. When running in graphical mode all the logging data will be +held in memory, even data that is not currently visible. At some point +the system will begin to run low on memory and performance will +suffer. To avoid problems, the ethernet script maintains a flag that +controls whether or not packet logging is active. The default is to +run with logging disabled, but this can be changed in the target +definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + … + logging 1 +}</PRE +></TD +></TR +></TABLE +><P +>The ethernet script will add a toolbar button that allows this flag to +be changed at run-time, allowing the user to capture traffic for +certain periods of time while the application continues running. + </P +><P +>The target definition file can contain the following entries for the +various packet logging filters: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + … + filter ether -hide 0 -background LightBlue -foreground "#000080" + filter arp -hide 0 -background LightBlue -foreground "#000050" + filter ipv4 -hide 0 -background LightBlue -foreground "#000040" + filter ipv6 -hide 1 -background LightBlue -foreground "#000040" + filter icmpv4 -hide 0 -background LightBlue -foreground "#000070" + filter icmpv6 -hide 1 -background LightBlue -foreground "#000070" + filter udp -hide 0 -background LightBlue -foreground "#000030" + filter tcp -hide 0 -background LightBlue -foreground "#000020" + filter hexdata -hide 1 -background LightBlue -foreground "#000080" + filter asciidata -hide 1 -background LightBlue -foreground "#000080" +}</PRE +></TD +></TR +></TABLE +><P +>All output will show the eCos network device, for example +<TT +CLASS="LITERAL" +>eth0</TT +>, and the direction relative to the eCos +application. Some of the filters will show packet headers, for example +<TT +CLASS="LITERAL" +>ether</TT +> gives details of the ethernet packet header +and <TT +CLASS="LITERAL" +>tcp</TT +> gives information about TCP headers such as +whether or not the SYN flag is set. The TCP and UDP filters will also +show source and destination addresses, using numerical addresses and +if possible host names. However, host names will only be shown if the +host appears in <TT +CLASS="FILENAME" +>/etc/hosts</TT +>: doing full DNS +lookups while the data is being captured would add significantly to +complexity and overhead. The <TT +CLASS="LITERAL" +>hexdata</TT +> and +<TT +CLASS="LITERAL" +>asciidata</TT +> filters show the remainder of the packets +after the ethernet, IP and TCP or UDP headers have been stripped. + </P +><P +>Some of the filters will provide raw dumps of some of the packet data. +Showing up to 1500 bytes of data for each packet would be expensive, +and often the most interesting information is near the start of the +packet. Therefore it is possible to set a limit on the number of bytes +that will be shown using the target definition file. The default limit +is 64 bytes. + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device ethernet { + … + max_show 128 +}</PRE +></TD +></TR +></TABLE +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-GUI" +></A +><H2 +>User Interface Additions</H2 +><P +>When running in graphical mode the ethernet script extends the user +interface in two ways: a button is added to the toolbar so that users +can enable or disable packet logging; and an entry is added to the +<SPAN +CLASS="GUIMENU" +>Help</SPAN +> menu for the ethernet-specific documentation. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-ARGS" +></A +><H2 +>Command Line Arguments</H2 +><P +>The synthetic target ethernet support does not use any command line +arguments. All configuration is handled through the target definition +file. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-HOOKS" +></A +><H2 +>Hooks</H2 +><P +>The ethernet support defines two hooks that can be used by other +scripts, especially user scripts: <TT +CLASS="LITERAL" +>ethernet_tx</TT +> and +<TT +CLASS="LITERAL" +>ethernet_rx</TT +>. The tx hook is called whenever eCos +tries to transmit a packet. The rx hook is called whenever an incoming +packet is passed to the eCos application. Note that this may be a +little bit after the packet was actually received by the I/O auxiliary +since it can buffer some packets. Both hooks are called with two +arguments, the name of the network device and the packet being +transferred. Typical usage might look like: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> proc my_tx_hook { arg_list } { + set dev [lindex $arg_list 0] + incr ::my_ethernet_tx_packets($dev) + incr ::my_ethernet_tx_bytes($dev) [string length [lindex $arg_list 1]] + } + proc my_rx_hook { arg_list } { + set dev [lindex $arg_list 0] + incr ::my_ethernet_rx_packets($dev) + incr ::my_ethernet_rx_bytes($dev) [string length [lindex $arg_list 1]] + } + synth::hook_add "ethernet_tx" my_tx_hook + synth::hook_add "ethernet_rx" my_rx_hook</PRE +></TD +></TR +></TABLE +><P +>The global arrays <TT +CLASS="VARNAME" +>my_ethernet_tx_packets</TT +> etc. will +now be updated whenever there is ethernet traffic. Other code, +probably running at regular intervals by use of the Tcl +<B +CLASS="COMMAND" +>after</B +> procedure, can then use this information to +update a graphical monitor of some sort. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-ETH-ECOSYNTH-TCL" +></A +><H2 +>Additional Tcl Procedures</H2 +><P +>The ethernet support provides one additional Tcl procedure that can be +used by other scripts; + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>ethernet::devices_get_list </PRE +></TD +></TR +></TABLE +><P +>This procedure returns a list of the ethernet devices that have been +instantiated, for example <TT +CLASS="LITERAL" +>{eth0 eth1}</TT +>. + </P +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/doc/makefile @@ -0,0 +1,34 @@ +#============================================================================= +# +# makefile +# +# For building the synthetic target ethernet package documentation +# +#============================================================================= +#####COPYRIGHTBEGIN#### +# +# =============================================================== +# Copyright (C) 2002 Bart Veer +# This material may be distributed only subject to the terms +# and conditions set forth in the Open Publication License, v1.0 +# or later (the latest version is presently available at +# http://www.opencontent.org/openpub/) +# =============================================================== +# +#####COPYRIGHTEND#### +#============================================================================= +#####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Date: 2002-08-20 +#####DESCRIPTIONEND#### +#============================================================================= + +TOPLEVEL := ../../../../../.. +MAIN_SGML := syntheth.sgml +MAIN_HTML := devs-eth-synth.html +MAIN_PDF := devs-eth-synth.pdf +OTHER_SGML := +PICTURES := + +include $(TOPLEVEL)/pkgconf/rules.doc
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new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/doc/syntheth.sgml @@ -0,0 +1,506 @@ +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V3.1//EN"> + +<!-- {{{ Banner --> + +<!-- =============================================================== --> +<!-- --> +<!-- syntheth.sgml --> +<!-- --> +<!-- Synthetic target ethernet support package. --> +<!-- --> +<!-- =============================================================== --> +<!-- ####COPYRIGHTBEGIN#### --> +<!-- --> +<!-- =============================================================== --> +<!-- Copyright (C) 2002 Bart Veer --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/) --> +<!-- =============================================================== --> +<!-- --> +<!-- ####COPYRIGHTEND#### --> +<!-- =============================================================== --> +<!-- #####DESCRIPTIONBEGIN#### --> +<!-- --> +<!-- Author(s): bartv --> +<!-- Contact(s): bartv --> +<!-- Date: 2002/08/20 --> +<!-- Version: 0.01 --> +<!-- --> +<!-- ####DESCRIPTIONEND#### --> +<!-- =============================================================== --> + +<!-- }}} --> + +<refentry id="devs-eth-synth-ecosynth"> + <refmeta> + <refentrytitle>Synthetic Target Ethernet Driver</refentrytitle> + </refmeta> + <refnamediv> + <refname>Synthetic Target Ethernet Support</refname> + <refpurpose>Allow synthetic target applications to perform ethernet I/O</refpurpose> + </refnamediv> + + <refsect1><title>Overview</title> + <para> +The synthetic target ethernet package can provide up to four network +devices, <varname>eth0</varname> to <varname>eth3</varname>. These can +be used directly by the eCos application or, more commonly, by a +TCP/IP stack that is linked with the eCos application. Each eCos +device can be mapped on to a real Linux network device. For example, +if the Linux PC has two ethernet cards and <varname>eth1</varname> is +not currently being used by Linux itself, then one of the eCos devices +can be mapped on to this Linux device. Alternatively, it is possible +to map some or all of the eCos devices on to the ethertap support +provided by the Linux kernel. + </para> + <para> +The ethernet package depends on the I/O auxiliary provided by the +synthetic target architectural HAL package. During initialization the +eCos application will attempt to instantiate the desired devices, by +sending a request to the auxiliary. This will load a Tcl script +<filename>ethernet.tcl</filename> that is responsible for handling the +instantiation request and subsequent I/O operations, for example +transmitting an ethernet packet. However, some of the low-level I/O +operations cannot conveniently be done by a Tcl script so +<filename>ethernet.tcl</filename> will actually run a separate program +<command>rawether</command> to interact with the Linux network device. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="overview.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +On the target-side there are configuration options to control which +network devices should be present. For many applications a single +device will be sufficient, but if the final eCos application is +something like a network bridge then the package can support multiple +devices. On the host-side each eCos network device needs to be mapped +on to a Linux one, either a real ethernet device or an ethertap +device. This is handled by an entry in the target definition file: + </para> + <programlisting> +synth_device ethernet { + eth0 real eth1 + eth1 ethertap tap3 00:01:02:03:FE:05 + … +} +</programlisting> + <para> +The ethernet package also comes with support for packet logging, +and provides various facilities for use by user Tcl scripts. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-install"><title>Installation</title> + <para> +Before a synthetic target eCos application can access ethernet devices +it is necessary to build and install host-side support. The relevant +code resides in the <filename class="directory">host</filename> +subdirectory of the synthetic target ethernet package, and building it +involves the standard <command>configure</command>, +<command>make</command> and <command>make install</command> steps. +The build involves a new executable <command>rawether</command> which +must be able to access a raw Linux network device. This is achieved by +installing it suid root, so the <command>make install</command> step +has to be run with superuser privileges. + </para> + <caution><para> +Installing <command>rawether</command> suid root introduces a +potential security problem. Although normally +<command>rawether</command> is executed only by the I/O auxiliary, +theoretically it can be run by any program. Effectively it gives any +user the ability to monitor all ethernet traffic and to inject +arbitrary packets into the network. Also, as with any suid root +programs there may be as yet undiscovered exploits. Users and system +administrators should consider the risks before running <command>make +install</command>. + </para></caution> + <para> +There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the ethernet support, +in a single build tree. This involves using the +<command>configure</command> script at the toplevel of the eCos +repository. For more information on this, see the +<filename>README.host</filename> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target ethernet support then it will be necessary to +rerun the toplevel configure script: the search for appropriate +packages happens at configure time. + </para> + <para> +The alternative is to build just the host-side for this package. +This requires a separate build directory, building directly in the +source tree is disallowed. The <command>configure</command> options +are much the same as for a build from the toplevel, and the +<filename>README.host</filename> file can be consulted for more +details. It is essential that the ethernet support be configured with +the same <option>--prefix</option> option as other eCos host-side +software, especially the I/O auxiliary provided by the architectural +synthetic target HAL package, otherwise the I/O auxiliary will be +unable to locate the ethernet support. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-options"><title>Target-side Configuration Options</title> + <para> +The target-side code can be configured to support up to four ethernet +devices, <varname>eth0</varname> to <varname>eth3</varname>. By +default <varname>eth0</varname> is enabled if the configuration +includes a TCP/IP stack, otherwise it is disabled. The other three +devices are always disabled by default. If any of the devices are +enabled then there will also be the usual configuration options +related to building this package. Other options related to network +devices, for example whether or not to use DHCP, are provided by +the generic network device package. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-real"><title>Real Ethernet</title> + <para> +One obvious way of providing a synthetic target eCos application with +ethernet I/O is to use a real ethernet device in the PC: transmitted +packets go out on a real network, and packets on the network addressed +to the right MAC address are passed on to eCos. This way synthetic +target networking behaves just like networking on a real target with +ethernet hardware. For example, if there is a DHCP server anywhere on +the network then eCos will be able to contact it during networking +startup and get hold of IP address information. + </para> + <para> +Configuring the ethernet support to use a real ethernet device +requires a simple entry in the target definition file: + </para> + <programlisting> +synth_device ethernet { + <eCos device> real <linux device> + … +} +</programlisting> + <para> +For example, to map the eCos network device <varname>eth0</varname> to +the Linux device <varname>eth1</varname>: + </para> + <programlisting> +synth_device ethernet { + eth0 real eth1 + … +} +</programlisting> + <para> +It is not possible for an ethernet device to be shared by both the +eCos TCP/IP stack and the Linux one: there would be no simple way to +work out which stack incoming packets are intended for. In theory +it might be possible to do some demultiplexing using distinct IP +addresses, but it would be impossible to support some functionality +such as DHCP. Therefore the <command>rawether</command> program will +refuse to access any ethernet device already in use. On a typical +Linux system <varname>eth0</varname> will be used for Linux +networking, and the PC will have to be equipped with additional +ethernet devices for use by eCos. + </para> + <para> +The <command>rawether</command> program will access the hardware via +the appropriate Linux device driver, so it is important that the +system is set up such that the relevant module will be automatically +loaded or is already loaded. The details of this will depend on the +installed distribution and version, but typically it will involve an +entry in <filename>/etc/modules.conf</filename>. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-ethertap"><title>Ethertap</title> + <para> +The Linux kernel's ethertap facility provides a virtual network +interface. A Linux application, for example the +<command>rawether</command> program, can open a special character +device <filename>/dev/net/tun</filename>, perform various +<function>ioctl</function> calls, and then <filename>write</filename> +and <filename>read</filename> ethernet packets. When the device is +opened the Linux kernel automatically creates a new network interface, +for example <varname>tap0</varname>. The Linux TCP/IP stack can be +made to use this network interface like any other interface, receiving +and transmitting ethernet packets. The net effect is a virtual network +connecting just the Linux and eCos TCP/IP stacks, with no other nodes +attached. By default all traffic remains inside this virtual network +and is never forwarded to a real network. + </para> + <para> +Support for the ethertap facility may or may not be provided +automatically, depending on your Linux distribution and version. If +your system does not have a device <filename>/dev/net/tun</filename> +or a module <filename>tun.o</filename> then the appropriate kernel +documentation should be consulted, for example +<filename>/usr/src/linux-2.4/Documentation/networking/tuntap.txt</filename>. + </para> + <para> +The target definition file is used to map eCos network devices on to +ethertap devices. The simplest usage is: + </para> + <programlisting> +synth_device ethernet { + eth0 ethertap + … +} +</programlisting> + <para> +The Linux kernel will automatically allocate the next available tap +network interface. Usually this will be <varname>tap0</varname> but if +other software is using the ethertap facility, for example to +implement a VPN, then a different number may be allocated. Usually it +will be better to specify the particular tap device that should be +used for each eCos device, for example: + </para> + <programlisting> +synth_device ethernet { + eth0 ethertap tap3 + eth1 ethertap tap4 + … +} +</programlisting> + <para> +The user now knows exactly which eCos device is mapped onto which +Linux device, avoiding much potential confusion. Because the virtual +devices are emulated ethernet devices, they require MAC addresses. +There is no physical hardware to provide these addresses, so normally +MAC addresses will be invented. That means that each time the eCos +application is run it will have different MAC addresses, which makes +it more difficult to compare the results of different runs. To get +more deterministic behaviour it is possible to specify the MAC +addresses in the target definition file: + </para> + <programlisting> +synth_device ethernet { + eth0 ethertap tap3 00:01:02:03:FE:05 + eth1 ethertap tap4 00:01:02:03:FE:06 + … +} +</programlisting> + <para> +During the initialization phase the eCos application will instantiate +the various network devices. This will cause the I/O auxiliary to load +the <filename>ethernet.tcl</filename> script and spawn +<command>rawether</command> processes, which in turn will +<function>open</function> <filename>/dev/net/tun</filename> and +perform the appropriate <filename>ioctl</filename> calls. On the Linux +side there will now be new network interfaces such as +<varname>tap3</varname>, and these can be configured like any other +network interface using commands such as <command>ifconfig</command>. +In addition, if the Linux system is set up with hotplug support then +it may be possible to arrange for the network interface to become +active automatically. On a Red Hat Linux system this would require +files such as +<filename>/etc/sysconfig/network-scripts/ifcfg-tap3</filename>, +containing data like: + </para> + <programlisting> +DEVICE="tap3" +BOOTPROTO="none" +BROADCAST=10.2.2.255 +IPADDR="10.2.2.1" +NETMASK="255.255.255.0" +NETWORK=10.2.2.0 +ONBOOT="no" +</programlisting> + <para> +This gives the Linux interface the address <literal>10.2.2.1</literal> +on the network <literal>10.2.2.0</literal>. The eCos network device +should be configured with a compatible address. One way of doing this +would be to enable <varname>CYGHWR_NET_DRIVER_ETH0_ADDRS</varname>, +set <varname>CYGHWR_NET_DRIVER_ETH0_ADDRS_IP</varname> to +<literal>10.2.2.2</literal>, and similarly update the +<varname>NETMASK</varname>, <varname>BROADCAST</varname>, +<varname>GATEWAY</varname> and <varname>SERVER</varname> configuration +options. + </para> + <para> +It should be noted that the ethertap facility provides a virtual +network, and any packets transmitted by the eCos application will +not appear on a real network. Therefore usually there will no +accessible DHCP server, and eCos cannot use DHCP or BOOTP to obtain IP +address information. Instead the eCos configuration should use manual +or static addresses. + </para> + <para> +An alternative approach would be to set up the Linux box as a network +bridge, using commands like <command>brctl</command> to connect the +virtual network interface <varname>tap3</varname> to a physical +network interface such as <varname>eth0</varname>. Any packets sent by +the eCos application will get forwarded automatically to the real +network, and some packets on the real network will get forwarded over +the virtual network to the eCos application. Note that the eCos +application might also get some packets that were not intended for it, +but usually those will just be discarded by the eCos TCP/IP stack. The +exact details of setting up a network bridge are left as an exercise +to the reader. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-logging"><title>Packet Logging</title> + <para> +The ethernet support comes with support for logging the various +packets that are transferred, including a simple protocol analyser. +This generates simple text output using the filter mechanisms provided +by the I/O auxiliary, so it is possible to control the appearance and +visibility of different types of output. For example the user might +want to see IPv4 headers and all ICMPv4 and ARP operations, but not +TCP headers or any of the packet data. + </para> + <para> +The protocol analyser is not intended to be a fully functional +analyser with knowledge of many different TCP/IP protocols, advanced +search facilities, graphical traffic displays, and so on. +Functionality like that is already provided by other tools such as +<application>ethereal</application> and +<application>tcpdump</application>. Achieving similar levels of +functionality would require a lot of work, for very little gain. It is +still useful to have some protocol analysis functionality available +because the output will be interleaved with other output, for example +<filename>printf</filename> calls from the application. That may make +it easier to understand the sequence of events. + </para> + <para> +One problem with logging ethernet traffic is that it can involve very +large amounts of data. If the application is expected to run for a +long time or is very I/O intensive then it is easy to end up with many +megabytes. When running in graphical mode all the logging data will be +held in memory, even data that is not currently visible. At some point +the system will begin to run low on memory and performance will +suffer. To avoid problems, the ethernet script maintains a flag that +controls whether or not packet logging is active. The default is to +run with logging disabled, but this can be changed in the target +definition file: + </para> + <programlisting> +synth_device ethernet { + … + logging 1 +} +</programlisting> + <para> +The ethernet script will add a toolbar button that allows this flag to +be changed at run-time, allowing the user to capture traffic for +certain periods of time while the application continues running. + </para> + <para> +The target definition file can contain the following entries for the +various packet logging filters: + </para> + <programlisting width=72> +synth_device ethernet { + … + filter ether -hide 0 -background LightBlue -foreground "#000080" + filter arp -hide 0 -background LightBlue -foreground "#000050" + filter ipv4 -hide 0 -background LightBlue -foreground "#000040" + filter ipv6 -hide 1 -background LightBlue -foreground "#000040" + filter icmpv4 -hide 0 -background LightBlue -foreground "#000070" + filter icmpv6 -hide 1 -background LightBlue -foreground "#000070" + filter udp -hide 0 -background LightBlue -foreground "#000030" + filter tcp -hide 0 -background LightBlue -foreground "#000020" + filter hexdata -hide 1 -background LightBlue -foreground "#000080" + filter asciidata -hide 1 -background LightBlue -foreground "#000080" +} +</programlisting> + <para> +All output will show the eCos network device, for example +<literal>eth0</literal>, and the direction relative to the eCos +application. Some of the filters will show packet headers, for example +<literal>ether</literal> gives details of the ethernet packet header +and <literal>tcp</literal> gives information about TCP headers such as +whether or not the SYN flag is set. The TCP and UDP filters will also +show source and destination addresses, using numerical addresses and +if possible host names. However, host names will only be shown if the +host appears in <filename>/etc/hosts</filename>: doing full DNS +lookups while the data is being captured would add significantly to +complexity and overhead. The <literal>hexdata</literal> and +<literal>asciidata</literal> filters show the remainder of the packets +after the ethernet, IP and TCP or UDP headers have been stripped. + </para> + <para> +Some of the filters will provide raw dumps of some of the packet data. +Showing up to 1500 bytes of data for each packet would be expensive, +and often the most interesting information is near the start of the +packet. Therefore it is possible to set a limit on the number of bytes +that will be shown using the target definition file. The default limit +is 64 bytes. + </para> + <programlisting width=72> +synth_device ethernet { + … + max_show 128 +} +</programlisting> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-gui"><title>User Interface Additions</title> + <para> +When running in graphical mode the ethernet script extends the user +interface in two ways: a button is added to the toolbar so that users +can enable or disable packet logging; and an entry is added to the +<guimenu>Help</guimenu> menu for the ethernet-specific documentation. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-args"><title>Command Line Arguments</title> + <para> +The synthetic target ethernet support does not use any command line +arguments. All configuration is handled through the target definition +file. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-hooks"><title>Hooks</title> + <para> +The ethernet support defines two hooks that can be used by other +scripts, especially user scripts: <literal>ethernet_tx</literal> and +<literal>ethernet_rx</literal>. The tx hook is called whenever eCos +tries to transmit a packet. The rx hook is called whenever an incoming +packet is passed to the eCos application. Note that this may be a +little bit after the packet was actually received by the I/O auxiliary +since it can buffer some packets. Both hooks are called with two +arguments, the name of the network device and the packet being +transferred. Typical usage might look like: + </para> + <programlisting> + proc my_tx_hook { arg_list } { + set dev [lindex $arg_list 0] + incr ::my_ethernet_tx_packets($dev) + incr ::my_ethernet_tx_bytes($dev) [string length [lindex $arg_list 1]] + } + proc my_rx_hook { arg_list } { + set dev [lindex $arg_list 0] + incr ::my_ethernet_rx_packets($dev) + incr ::my_ethernet_rx_bytes($dev) [string length [lindex $arg_list 1]] + } + synth::hook_add "ethernet_tx" my_tx_hook + synth::hook_add "ethernet_rx" my_rx_hook +</programlisting> + <para> +The global arrays <varname>my_ethernet_tx_packets</varname> etc. will +now be updated whenever there is ethernet traffic. Other code, +probably running at regular intervals by use of the Tcl +<command>after</command> procedure, can then use this information to +update a graphical monitor of some sort. + </para> + </refsect1> + + <refsect1 id="devs-eth-ecosynth-tcl"><title>Additional Tcl Procedures</title> + <para> +The ethernet support provides one additional Tcl procedure that can be +used by other scripts; + </para> + <programlisting> +ethernet::devices_get_list +</programlisting> + <para> +This procedure returns a list of the ethernet devices that have been +instantiated, for example <literal>{eth0 eth1}</literal>. + </para> + </refsect1> + +</refentry>
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/Makefile.am @@ -0,0 +1,91 @@ +## Process this file with automake to produce Makefile.in +## ===================================================================== +## +## Makefile.am +## +## Build support for the host-side synthetic target support, +## the ethernetpackage. +## +## ===================================================================== +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target ethernet support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +## ===================================================================== +#######DESCRIPTIONBEGIN#### +## +## Author(s): bartv +## Contact(s): bartv +## Date: 2002/08/07 +## Version: 0.01 +## +######DESCRIPTIONEND#### +## ===================================================================== + +AUTOMAKE_OPTIONS = 1.3 foreign + +## Only some platforms are supported. Having the configure script throw +## an error when attempting to configure on an unsupported platform +## would be a mistake, since that would prevent any configury from +## the toplevel on unsupported platforms. Instead an automake conditional +## is used, leading to null makefiles on unsupported platforms. + +if SUPPORTED + +AM_CFLAGS = @ecos_CFLAGS@ -DECOSYNTH_VERSION=\"@VERSION@\" \ + -DECOS_REPOSITORY=\"@ECOS_REPOSITORY@\" \ + -DLIBEXECDIR=\"$(libexecdir)\" \ + -DPACKAGE_DIR=\"@PACKAGE_DIR@\" \ + -DPACKAGE_VERSION=\"@PACKAGE_VERSION@\" \ + -DPACKAGE_INSTALL=\"@PACKAGE_INSTALL@\" +AM_CXXFLAGS = @ecos_CXXFLAGS@ +INCLUDES = @ecos_INCLUDES@ +LIBS = @ecos_LIBS@ @ecos_LDADD@ + +## The synthetic target support consists of a single program rawether, +## a number of Tcl scripts, and some additional data files. These are +## all installed in a single directory $(libexec)/ecos/<package>_<version>/ +## Neither the rawether executable nor any of the scripts are directly +## executable, instead rawether gets fork()'d/execve()'d by the Tcl +## script so $(libexec) is appropriate. Strictly speaking the +## Tcl scripts and data files are architecture-independent so should +## probably be installed in an analogous directory below $(datadir), +## but that would add more directories for little real gain. The scripts +## are treated as data files since they should not be executed directly, +## i.e. they should not be installed with the execute bit set. + +etherdir = $(libexecdir)/ecos/@PACKAGE_INSTALL@ +ether_PROGRAMS = rawether +ether_DATA = ethernet.tcl ethernet.tdf netrecord.xbm + +rawether_SOURCES = rawether.c + +## Manual dependencies +rawether.$(OBJEXT) : Makefile ../src/protocol.h + +## The rawether program needs to run with root privileges, or it will +## be unable to access the ethernet hardware. +install-data-hook: + chown root $(etherdir)/rawether + chmod u+s $(etherdir)/rawether + +endif
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/Makefile.in @@ -0,0 +1,450 @@ +# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am + +# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target ethernet support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +#######DESCRIPTIONBEGIN#### +######DESCRIPTIONEND#### + + +SHELL = @SHELL@ + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +bindir = @bindir@ +sbindir = @sbindir@ +libexecdir = @libexecdir@ +datadir = @datadir@ +sysconfdir = @sysconfdir@ +sharedstatedir = @sharedstatedir@ +localstatedir = @localstatedir@ +libdir = @libdir@ +infodir = @infodir@ +mandir = @mandir@ +includedir = @includedir@ +oldincludedir = /usr/include + +DESTDIR = + +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ + +top_builddir = . + +ACLOCAL = @ACLOCAL@ +AUTOCONF = @AUTOCONF@ +AUTOMAKE = @AUTOMAKE@ +AUTOHEADER = @AUTOHEADER@ + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS) +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +transform = @program_transform_name@ + +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +host_alias = @host_alias@ +host_triplet = @host@ +CC = @CC@ +CXX = @CXX@ +ECOS_REPOSITORY = @ECOS_REPOSITORY@ +EXEEXT = @EXEEXT@ +MAINT = @MAINT@ +MAKEINFO = @MAKEINFO@ +MSVC_SRCDIR = @MSVC_SRCDIR@ +OBJEXT = @OBJEXT@ +PACKAGE = @PACKAGE@ +PACKAGE_DIR = @PACKAGE_DIR@ +PACKAGE_INSTALL = @PACKAGE_INSTALL@ +PACKAGE_VERSION = @PACKAGE_VERSION@ +VERSION = @VERSION@ +ecos_CFLAGS = @ecos_CFLAGS@ +ecos_CXXFLAGS = @ecos_CXXFLAGS@ +ecos_INCLUDES = @ecos_INCLUDES@ +ecos_LDADD = @ecos_LDADD@ +ecos_LIBS = @ecos_LIBS@ +ecos_infra_incdir = @ecos_infra_incdir@ +ecos_infra_libdir = @ecos_infra_libdir@ +ecos_libcdl_incdir = @ecos_libcdl_incdir@ +ecos_libcdl_libdir = @ecos_libcdl_libdir@ +ecos_tk_libs = @ecos_tk_libs@ + +AUTOMAKE_OPTIONS = 1.3 foreign + +@SUPPORTED_TRUE@AM_CFLAGS = @SUPPORTED_TRUE@@ecos_CFLAGS@ -DECOSYNTH_VERSION=\"@VERSION@\" \ +@SUPPORTED_TRUE@ -DECOS_REPOSITORY=\"@ECOS_REPOSITORY@\" \ +@SUPPORTED_TRUE@ -DLIBEXECDIR=\"$(libexecdir)\" \ +@SUPPORTED_TRUE@ -DPACKAGE_DIR=\"@PACKAGE_DIR@\" \ +@SUPPORTED_TRUE@ -DPACKAGE_VERSION=\"@PACKAGE_VERSION@\" \ +@SUPPORTED_TRUE@ -DPACKAGE_INSTALL=\"@PACKAGE_INSTALL@\" +@SUPPORTED_TRUE@AM_CXXFLAGS = @SUPPORTED_TRUE@@ecos_CXXFLAGS@ +@SUPPORTED_TRUE@INCLUDES = @SUPPORTED_TRUE@@ecos_INCLUDES@ +@SUPPORTED_TRUE@LIBS = @SUPPORTED_TRUE@@ecos_LIBS@ @ecos_LDADD@ + +@SUPPORTED_TRUE@etherdir = @SUPPORTED_TRUE@$(libexecdir)/ecos/@PACKAGE_INSTALL@ +@SUPPORTED_TRUE@ether_PROGRAMS = @SUPPORTED_TRUE@rawether +@SUPPORTED_TRUE@ether_DATA = @SUPPORTED_TRUE@ethernet.tcl ethernet.tdf netrecord.xbm + +@SUPPORTED_TRUE@rawether_SOURCES = @SUPPORTED_TRUE@rawether.c +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +mkinstalldirs = $(SHELL) $(top_srcdir)/../../../../../../../acsupport/mkinstalldirs +CONFIG_CLEAN_FILES = +@SUPPORTED_TRUE@ether_PROGRAMS = rawether$(EXEEXT) +PROGRAMS = $(ether_PROGRAMS) + + +DEFS = @DEFS@ -I. -I$(srcdir) +CPPFLAGS = @CPPFLAGS@ +LDFLAGS = @LDFLAGS@ +@SUPPORTED_TRUE@rawether_OBJECTS = rawether.$(OBJEXT) +rawether_LDADD = $(LDADD) +rawether_DEPENDENCIES = +rawether_LDFLAGS = +CFLAGS = @CFLAGS@ +COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ +DATA = $(ether_DATA) + +DIST_COMMON = Makefile.am Makefile.in acinclude.m4 aclocal.m4 configure \ +configure.in + + +DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST) + +TAR = gtar +GZIP_ENV = --best +DEP_FILES = .deps/rawether.P +SOURCES = $(rawether_SOURCES) +OBJECTS = $(rawether_OBJECTS) + +all: all-redirect +.SUFFIXES: +.SUFFIXES: .S .c .o .obj .s +$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) + cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile + +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(BUILT_SOURCES) + cd $(top_builddir) \ + && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status + +$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ configure.in acinclude.m4 + cd $(srcdir) && $(ACLOCAL) + +config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) + $(SHELL) ./config.status --recheck +$(srcdir)/configure: @MAINTAINER_MODE_TRUE@$(srcdir)/configure.in $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES) + cd $(srcdir) && $(AUTOCONF) + +mostlyclean-etherPROGRAMS: + +clean-etherPROGRAMS: + -test -z "$(ether_PROGRAMS)" || rm -f $(ether_PROGRAMS) + +distclean-etherPROGRAMS: + +maintainer-clean-etherPROGRAMS: + +install-etherPROGRAMS: $(ether_PROGRAMS) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(etherdir) + @list='$(ether_PROGRAMS)'; for p in $$list; do \ + if test -f $$p; then \ + echo " $(INSTALL_PROGRAM) $$p $(DESTDIR)$(etherdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`"; \ + $(INSTALL_PROGRAM) $$p $(DESTDIR)$(etherdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \ + else :; fi; \ + done + +uninstall-etherPROGRAMS: + @$(NORMAL_UNINSTALL) + list='$(ether_PROGRAMS)'; for p in $$list; do \ + rm -f $(DESTDIR)$(etherdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \ + done + +# FIXME: We should only use cygpath when building on Windows, +# and only if it is available. +.c.obj: + $(COMPILE) -c `cygpath -w $<` + +.s.o: + $(COMPILE) -c $< + +.S.o: + $(COMPILE) -c $< + +mostlyclean-compile: + -rm -f *.o core *.core + -rm -f *.$(OBJEXT) + +clean-compile: + +distclean-compile: + -rm -f *.tab.c + +maintainer-clean-compile: + +rawether$(EXEEXT): $(rawether_OBJECTS) $(rawether_DEPENDENCIES) + @rm -f rawether$(EXEEXT) + $(LINK) $(rawether_LDFLAGS) $(rawether_OBJECTS) $(rawether_LDADD) $(LIBS) + +install-etherDATA: $(ether_DATA) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(etherdir) + @list='$(ether_DATA)'; for p in $$list; do \ + if test -f $(srcdir)/$$p; then \ + echo " $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(etherdir)/$$p"; \ + $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(etherdir)/$$p; \ + else if test -f $$p; then \ + echo " $(INSTALL_DATA) $$p $(DESTDIR)$(etherdir)/$$p"; \ + $(INSTALL_DATA) $$p $(DESTDIR)$(etherdir)/$$p; \ + fi; fi; \ + done + +uninstall-etherDATA: + @$(NORMAL_UNINSTALL) + list='$(ether_DATA)'; for p in $$list; do \ + rm -f $(DESTDIR)$(etherdir)/$$p; \ + done + +tags: TAGS + +ID: $(HEADERS) $(SOURCES) $(LISP) + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + here=`pwd` && cd $(srcdir) \ + && mkid -f$$here/ID $$unique $(LISP) + +TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) $(LISP) + tags=; \ + here=`pwd`; \ + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \ + || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags $$unique $(LISP) -o $$here/TAGS) + +mostlyclean-tags: + +clean-tags: + +distclean-tags: + -rm -f TAGS ID + +maintainer-clean-tags: + +distdir = $(PACKAGE)-$(VERSION) +top_distdir = $(distdir) + +# This target untars the dist file and tries a VPATH configuration. Then +# it guarantees that the distribution is self-contained by making another +# tarfile. +distcheck: dist + -rm -rf $(distdir) + GZIP=$(GZIP_ENV) $(TAR) zxf $(distdir).tar.gz + mkdir $(distdir)/=build + mkdir $(distdir)/=inst + dc_install_base=`cd $(distdir)/=inst && pwd`; \ + cd $(distdir)/=build \ + && ../configure --srcdir=.. --prefix=$$dc_install_base \ + && $(MAKE) $(AM_MAKEFLAGS) \ + && $(MAKE) $(AM_MAKEFLAGS) dvi \ + && $(MAKE) $(AM_MAKEFLAGS) check \ + && $(MAKE) $(AM_MAKEFLAGS) install \ + && $(MAKE) $(AM_MAKEFLAGS) installcheck \ + && $(MAKE) $(AM_MAKEFLAGS) dist + -rm -rf $(distdir) + @banner="$(distdir).tar.gz is ready for distribution"; \ + dashes=`echo "$$banner" | sed s/./=/g`; \ + echo "$$dashes"; \ + echo "$$banner"; \ + echo "$$dashes" +dist: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +dist-all: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +distdir: $(DISTFILES) + -rm -rf $(distdir) + mkdir $(distdir) + -chmod 777 $(distdir) + here=`cd $(top_builddir) && pwd`; \ + top_distdir=`cd $(distdir) && pwd`; \ + distdir=`cd $(distdir) && pwd`; \ + cd $(top_srcdir) \ + && $(AUTOMAKE) --include-deps --build-dir=$$here --srcdir-name=$(top_srcdir) --output-dir=$$top_distdir --foreign Makefile + @for file in $(DISTFILES); do \ + d=$(srcdir); \ + if test -d $$d/$$file; then \ + cp -pr $$d/$$file $(distdir)/$$file; \ + else \ + test -f $(distdir)/$$file \ + || ln $$d/$$file $(distdir)/$$file 2> /dev/null \ + || cp -p $$d/$$file $(distdir)/$$file || :; \ + fi; \ + done + +DEPS_MAGIC := $(shell mkdir .deps > /dev/null 2>&1 || :) + +-include $(DEP_FILES) + +mostlyclean-depend: + +clean-depend: + +distclean-depend: + -rm -rf .deps + +maintainer-clean-depend: + +%.o: %.c + @echo '$(COMPILE) -c $<'; \ + $(COMPILE) -Wp,-MD,.deps/$(*F).pp -c $< + @-cp .deps/$(*F).pp .deps/$(*F).P; \ + tr ' ' '\012' < .deps/$(*F).pp \ + | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \ + >> .deps/$(*F).P; \ + rm .deps/$(*F).pp + +%.lo: %.c + @echo '$(LTCOMPILE) -c $<'; \ + $(LTCOMPILE) -Wp,-MD,.deps/$(*F).pp -c $< + @-sed -e 's/^\([^:]*\)\.o[ ]*:/\1.lo \1.o :/' \ + < .deps/$(*F).pp > .deps/$(*F).P; \ + tr ' ' '\012' < .deps/$(*F).pp \ + | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \ + >> .deps/$(*F).P; \ + rm -f .deps/$(*F).pp +info-am: +info: info-am +dvi-am: +dvi: dvi-am +check-am: all-am +check: check-am +installcheck-am: +installcheck: installcheck-am +install-exec-am: +install-exec: install-exec-am + +install-data-am: install-etherPROGRAMS install-etherDATA + @$(NORMAL_INSTALL) + $(MAKE) $(AM_MAKEFLAGS) install-data-hook +install-data: install-data-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am +install: install-am +uninstall-am: uninstall-etherPROGRAMS uninstall-etherDATA +uninstall: uninstall-am +all-am: Makefile $(PROGRAMS) $(DATA) +all-redirect: all-am +install-strip: + $(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install +installdirs: + $(mkinstalldirs) $(DESTDIR)$(etherdir) $(DESTDIR)$(etherdir) + + +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -rm -f Makefile $(CONFIG_CLEAN_FILES) + -rm -f config.cache config.log stamp-h stamp-h[0-9]* + +maintainer-clean-generic: +mostlyclean-am: mostlyclean-etherPROGRAMS mostlyclean-compile \ + mostlyclean-tags mostlyclean-depend mostlyclean-generic + +mostlyclean: mostlyclean-am + +clean-am: clean-etherPROGRAMS clean-compile clean-tags clean-depend \ + clean-generic mostlyclean-am + +clean: clean-am + +distclean-am: distclean-etherPROGRAMS distclean-compile distclean-tags \ + distclean-depend distclean-generic clean-am + +distclean: distclean-am + -rm -f config.status + +maintainer-clean-am: maintainer-clean-etherPROGRAMS \ + maintainer-clean-compile maintainer-clean-tags \ + maintainer-clean-depend maintainer-clean-generic \ + distclean-am + @echo "This command is intended for maintainers to use;" + @echo "it deletes files that may require special tools to rebuild." + +maintainer-clean: maintainer-clean-am + -rm -f config.status + +.PHONY: mostlyclean-etherPROGRAMS distclean-etherPROGRAMS \ +clean-etherPROGRAMS maintainer-clean-etherPROGRAMS \ +uninstall-etherPROGRAMS install-etherPROGRAMS mostlyclean-compile \ +distclean-compile clean-compile maintainer-clean-compile \ +uninstall-etherDATA install-etherDATA tags mostlyclean-tags \ +distclean-tags clean-tags maintainer-clean-tags distdir \ +mostlyclean-depend distclean-depend clean-depend \ +maintainer-clean-depend info-am info dvi-am dvi check check-am \ +installcheck-am installcheck install-exec-am install-exec \ +install-data-am install-data install-am install uninstall-am uninstall \ +all-redirect all-am all installdirs mostlyclean-generic \ +distclean-generic clean-generic maintainer-clean-generic clean \ +mostlyclean distclean maintainer-clean + + +@SUPPORTED_TRUE@rawether.$(OBJEXT) : Makefile ../src/protocol.h + +@SUPPORTED_TRUE@install-data-hook: +@SUPPORTED_TRUE@ chown root $(etherdir)/rawether +@SUPPORTED_TRUE@ chmod u+s $(etherdir)/rawether + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT:
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/acinclude.m4 @@ -0,0 +1,45 @@ +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/07 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../../acsupport/acinclude.m4)
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/aclocal.m4 @@ -0,0 +1,183 @@ +dnl aclocal.m4 generated automatically by aclocal 1.4-p5 + +dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without +dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A +dnl PARTICULAR PURPOSE. + +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/07 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../../acsupport/acinclude.m4) + +# Define a conditional. + +AC_DEFUN([AM_CONDITIONAL], +[AC_SUBST($1_TRUE) +AC_SUBST($1_FALSE) +if $2; then + $1_TRUE= + $1_FALSE='#' +else + $1_TRUE='#' + $1_FALSE= +fi]) + +# Do all the work for Automake. This macro actually does too much -- +# some checks are only needed if your package does certain things. +# But this isn't really a big deal. + +# serial 1 + +dnl Usage: +dnl AM_INIT_AUTOMAKE(package,version, [no-define]) + +AC_DEFUN([AM_INIT_AUTOMAKE], +[AC_REQUIRE([AC_PROG_INSTALL]) +PACKAGE=[$1] +AC_SUBST(PACKAGE) +VERSION=[$2] +AC_SUBST(VERSION) +dnl test to see if srcdir already configured +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + AC_MSG_ERROR([source directory already configured; run "make distclean" there first]) +fi +ifelse([$3],, +AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package]) +AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])) +AC_REQUIRE([AM_SANITY_CHECK]) +AC_REQUIRE([AC_ARG_PROGRAM]) +dnl FIXME This is truly gross. +missing_dir=`cd $ac_aux_dir && pwd` +AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir) +AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir) +AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir) +AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir) +AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir) +AC_REQUIRE([AC_PROG_MAKE_SET])]) + +# +# Check to make sure that the build environment is sane. +# + +AC_DEFUN([AM_SANITY_CHECK], +[AC_MSG_CHECKING([whether build environment is sane]) +# Just in case +sleep 1 +echo timestamp > conftestfile +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "[$]*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "[$]*" != "X $srcdir/configure conftestfile" \ + && test "[$]*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken +alias in your environment]) + fi + + test "[$]2" = conftestfile + ) +then + # Ok. + : +else + AC_MSG_ERROR([newly created file is older than distributed files! +Check your system clock]) +fi +rm -f conftest* +AC_MSG_RESULT(yes)]) + +dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY) +dnl The program must properly implement --version. +AC_DEFUN([AM_MISSING_PROG], +[AC_MSG_CHECKING(for working $2) +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if ($2 --version) < /dev/null > /dev/null 2>&1; then + $1=$2 + AC_MSG_RESULT(found) +else + $1="$3/missing $2" + AC_MSG_RESULT(missing) +fi +AC_SUBST($1)]) + +# Add --enable-maintainer-mode option to configure. +# From Jim Meyering + +# serial 1 + +AC_DEFUN([AM_MAINTAINER_MODE], +[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) + dnl maintainer-mode is disabled by default + AC_ARG_ENABLE(maintainer-mode, +[ --enable-maintainer-mode enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer], + USE_MAINTAINER_MODE=$enableval, + USE_MAINTAINER_MODE=no) + AC_MSG_RESULT($USE_MAINTAINER_MODE) + AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes) + MAINT=$MAINTAINER_MODE_TRUE + AC_SUBST(MAINT)dnl +] +) +
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/configure @@ -0,0 +1,2013 @@ +#! /bin/sh + +# Guess values for system-dependent variables and create Makefiles. +# Generated automatically using autoconf version 2.13 +# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. + +# Defaults: +ac_help= +ac_default_prefix=/usr/local +# Any additions from configure.in: +ac_help="$ac_help + --enable-maintainer-mode enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer" +ac_help="$ac_help + --enable-debug do a debug rather than a release build" +ac_help="$ac_help + --enable-ansi do an ANSI rather than a unicode build" +ac_help="$ac_help + --with-tcl-version=<vsn> version of Tcl to be used" +ac_help="$ac_help + --with-tcl-header=<path> location of Tcl header" +ac_help="$ac_help + --with-tcl-lib=<path> location of Tcl libraries" +ac_help="$ac_help + --with-tcl=<path> location of Tcl header and libraries" + +# Initialize some variables set by options. +# The variables have the same names as the options, with +# dashes changed to underlines. +build=NONE +cache_file=./config.cache +exec_prefix=NONE +host=NONE +no_create= +nonopt=NONE +no_recursion= +prefix=NONE +program_prefix=NONE +program_suffix=NONE +program_transform_name=s,x,x, +silent= +site= +srcdir= +target=NONE +verbose= +x_includes=NONE +x_libraries=NONE +bindir='${exec_prefix}/bin' +sbindir='${exec_prefix}/sbin' +libexecdir='${exec_prefix}/libexec' +datadir='${prefix}/share' +sysconfdir='${prefix}/etc' +sharedstatedir='${prefix}/com' +localstatedir='${prefix}/var' +libdir='${exec_prefix}/lib' +includedir='${prefix}/include' +oldincludedir='/usr/include' +infodir='${prefix}/info' +mandir='${prefix}/man' + +# Initialize some other variables. +subdirs= +MFLAGS= MAKEFLAGS= +SHELL=${CONFIG_SHELL-/bin/sh} +# Maximum number of lines to put in a shell here document. +ac_max_here_lines=12 + +ac_prev= +for ac_option +do + + # If the previous option needs an argument, assign it. + if test -n "$ac_prev"; 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then + echo "--enable and --with options recognized:$ac_help" + fi + exit 0 ;; + + -host | --host | --hos | --ho) + ac_prev=host ;; + -host=* | --host=* | --hos=* | --ho=*) + host="$ac_optarg" ;; + + -includedir | --includedir | --includedi | --included | --include \ + | --includ | --inclu | --incl | --inc) + ac_prev=includedir ;; + -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \ + | --includ=* | --inclu=* | --incl=* | --inc=*) + includedir="$ac_optarg" ;; + + -infodir | --infodir | --infodi | --infod | --info | --inf) + ac_prev=infodir ;; + -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*) + infodir="$ac_optarg" ;; + + -libdir | --libdir | --libdi | --libd) + ac_prev=libdir ;; + -libdir=* | --libdir=* | --libdi=* | --libd=*) + libdir="$ac_optarg" ;; + + -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \ + | --libexe | --libex | --libe) + ac_prev=libexecdir ;; + -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \ + | --libexe=* | --libex=* | --libe=*) + libexecdir="$ac_optarg" ;; + + -localstatedir | --localstatedir | --localstatedi | --localstated \ + | --localstate | --localstat | --localsta | --localst \ + | --locals | --local | --loca | --loc | --lo) + ac_prev=localstatedir ;; + -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \ + | --localstate=* | --localstat=* | --localsta=* | --localst=* \ + | --locals=* | --local=* | --loca=* | --loc=* | --lo=*) + localstatedir="$ac_optarg" ;; + + -mandir | --mandir | --mandi | --mand | --man | --ma | --m) + ac_prev=mandir ;; + -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*) + mandir="$ac_optarg" ;; + + -nfp | --nfp | --nf) + # Obsolete; use --without-fp. + with_fp=no ;; + + -no-create | --no-create | --no-creat | --no-crea | --no-cre \ + | --no-cr | --no-c) + no_create=yes ;; + + -no-recursion | --no-recursion | --no-recursio | --no-recursi \ + | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) + no_recursion=yes ;; + + -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \ + | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \ + | --oldin | --oldi | --old | --ol | --o) + ac_prev=oldincludedir ;; 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then + echo "configure: warning: $ac_option: invalid host type" 1>&2 + fi + if test "x$nonopt" != xNONE; then + { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; } + fi + nonopt="$ac_option" + ;; + + esac +done + +if test -n "$ac_prev"; then + { echo "configure: error: missing argument to --`echo $ac_prev | sed 's/_/-/g'`" 1>&2; exit 1; } +fi + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +# File descriptor usage: +# 0 standard input +# 1 file creation +# 2 errors and warnings +# 3 some systems may open it to /dev/tty +# 4 used on the Kubota Titan +# 6 checking for... messages and results +# 5 compiler messages saved in config.log +if test "$silent" = yes; then + exec 6>/dev/null +else + exec 6>&1 +fi +exec 5>./config.log + +echo "\ +This file contains any messages produced by compilers while +running configure, to aid debugging if configure makes a mistake. +" 1>&5 + +# Strip out --no-create and --no-recursion so they do not pile up. +# Also quote any args containing shell metacharacters. +ac_configure_args= +for ac_arg +do + case "$ac_arg" in + -no-create | --no-create | --no-creat | --no-crea | --no-cre \ + | --no-cr | --no-c) ;; + -no-recursion | --no-recursion | --no-recursio | --no-recursi \ + | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;; + *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*) + ac_configure_args="$ac_configure_args '$ac_arg'" ;; + *) ac_configure_args="$ac_configure_args $ac_arg" ;; + esac +done + +# NLS nuisances. +# Only set these to C if already set. These must not be set unconditionally +# because not all systems understand e.g. LANG=C (notably SCO). +# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'! +# Non-C LC_CTYPE values break the ctype check. +if test "${LANG+set}" = set; then LANG=C; export LANG; fi +if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi +if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi +if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi + +# confdefs.h avoids OS command line length limits that DEFS can exceed. +rm -rf conftest* confdefs.h +# AIX cpp loses on an empty file, so make sure it contains at least a newline. +echo > confdefs.h + +# A filename unique to this package, relative to the directory that +# configure is in, which we can look for to find out if srcdir is correct. +ac_unique_file=rawether.c + +# Find the source files, if location was not specified. +if test -z "$srcdir"; then + ac_srcdir_defaulted=yes + # Try the directory containing this script, then its parent. + ac_prog=$0 + ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'` + test "x$ac_confdir" = "x$ac_prog" && ac_confdir=. + srcdir=$ac_confdir + if test ! -r $srcdir/$ac_unique_file; then + srcdir=.. + fi +else + ac_srcdir_defaulted=no +fi +if test ! -r $srcdir/$ac_unique_file; then + if test "$ac_srcdir_defaulted" = yes; then + { echo "configure: error: can not find sources in $ac_confdir or .." 1>&2; exit 1; } + else + { echo "configure: error: can not find sources in $srcdir" 1>&2; exit 1; } + fi +fi +srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'` + +# Prefer explicitly selected file to automatically selected ones. +if test -z "$CONFIG_SITE"; then + if test "x$prefix" != xNONE; then + CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site" + else + CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site" + fi +fi +for ac_site_file in $CONFIG_SITE; do + if test -r "$ac_site_file"; then + echo "loading site script $ac_site_file" + . "$ac_site_file" + fi +done + +if test -r "$cache_file"; then + echo "loading cache $cache_file" + . $cache_file +else + echo "creating cache $cache_file" + > $cache_file +fi + +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +ac_exeext= +ac_objext=o +if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then + # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu. + if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then + ac_n= ac_c=' +' ac_t=' ' + else + ac_n=-n ac_c= ac_t= + fi +else + ac_n= ac_c='\c' ac_t= +fi + + + +ac_aux_dir= +for ac_dir in ../../../../../../../acsupport $srcdir/../../../../../../../acsupport; do + if test -f $ac_dir/install-sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install-sh -c" + break + elif test -f $ac_dir/install.sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install.sh -c" + break + fi +done +if test -z "$ac_aux_dir"; then + { echo "configure: error: can not find install-sh or install.sh in ../../../../../../../acsupport $srcdir/../../../../../../../acsupport" 1>&2; exit 1; } +fi +ac_config_guess=$ac_aux_dir/config.guess +ac_config_sub=$ac_aux_dir/config.sub +ac_configure=$ac_aux_dir/configure # This should be Cygnus configure. + + + + echo $ac_n "checking that a separate build tree is being used""... $ac_c" 1>&6 +echo "configure:563: checking that a separate build tree is being used" >&5 + ecos_cwd=`/bin/pwd` + if test "${srcdir}" = "." ; then + srcdir=${ecos_cwd} + fi + if test "${ecos_cwd}" = "${srcdir}" ; then + echo "$ac_t""no" 1>&6 + { echo "configure: error: This configure script should not be run inside the source tree. Instead please use a separate build tree" 1>&2; exit 1; } + else + echo "$ac_t""yes" 1>&6 + fi + + +# Make sure we can run config.sub. +if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then : +else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } +fi + +echo $ac_n "checking host system type""... $ac_c" 1>&6 +echo "configure:582: checking host system type" >&5 + +host_alias=$host +case "$host_alias" in +NONE) + case $nonopt in + NONE) + if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then : + else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; } + fi ;; + *) host_alias=$nonopt ;; + esac ;; +esac + +host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias` +host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` +host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` +host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +echo "$ac_t""$host" 1>&6 + +# Find a good install program. 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Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "$*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "$*" != "X $srcdir/configure conftestfile" \ + && test "$*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + { echo "configure: error: ls -t appears to fail. Make sure there is not a broken +alias in your environment" 1>&2; exit 1; } + fi + + test "$2" = conftestfile + ) +then + # Ok. + : +else + { echo "configure: error: newly created file is older than distributed files! +Check your system clock" 1>&2; exit 1; } +fi +rm -f conftest* +echo "$ac_t""yes" 1>&6 +if test "$program_transform_name" = s,x,x,; then + program_transform_name= +else + # Double any \ or $. echo might interpret backslashes. + cat <<\EOF_SED > conftestsed +s,\\,\\\\,g; s,\$,$$,g +EOF_SED + program_transform_name="`echo $program_transform_name|sed -f conftestsed`" + rm -f conftestsed +fi +test "$program_prefix" != NONE && + program_transform_name="s,^,${program_prefix},; $program_transform_name" +# Use a double $ so make ignores it. +test "$program_suffix" != NONE && + program_transform_name="s,\$\$,${program_suffix},; $program_transform_name" + +# sed with no file args requires a program. +test "$program_transform_name" = "" && program_transform_name="s,x,x," + +echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6 +echo "configure:724: checking whether ${MAKE-make} sets \${MAKE}" >&5 +set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'` +if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftestmake <<\EOF +all: + @echo 'ac_maketemp="${MAKE}"' +EOF +# GNU make sometimes prints "make[1]: Entering...", which would confuse us. +eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=` +if test -n "$ac_maketemp"; then + eval ac_cv_prog_make_${ac_make}_set=yes +else + eval ac_cv_prog_make_${ac_make}_set=no +fi +rm -f conftestmake +fi +if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then + echo "$ac_t""yes" 1>&6 + SET_MAKE= +else + echo "$ac_t""no" 1>&6 + SET_MAKE="MAKE=${MAKE-make}" +fi + + +PACKAGE=eCos_synthetic_target_ethernet + +VERSION=0.1 + +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + { echo "configure: error: source directory already configured; run "make distclean" there first" 1>&2; exit 1; } +fi + + + +missing_dir=`cd $ac_aux_dir && pwd` +echo $ac_n "checking for working aclocal""... $ac_c" 1>&6 +echo "configure:763: checking for working aclocal" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. 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Sigh. +if (automake --version) < /dev/null > /dev/null 2>&1; then + AUTOMAKE=automake + echo "$ac_t""found" 1>&6 +else + AUTOMAKE="$missing_dir/missing automake" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working autoheader""... $ac_c" 1>&6 +echo "configure:802: checking for working autoheader" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (autoheader --version) < /dev/null > /dev/null 2>&1; then + AUTOHEADER=autoheader + echo "$ac_t""found" 1>&6 +else + AUTOHEADER="$missing_dir/missing autoheader" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working makeinfo""... $ac_c" 1>&6 +echo "configure:815: checking for working makeinfo" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (makeinfo --version) < /dev/null > /dev/null 2>&1; then + MAKEINFO=makeinfo + echo "$ac_t""found" 1>&6 +else + MAKEINFO="$missing_dir/missing makeinfo" + echo "$ac_t""missing" 1>&6 +fi + + +echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6 +echo "configure:829: checking whether to enable maintainer-specific portions of Makefiles" >&5 + # Check whether --enable-maintainer-mode or --disable-maintainer-mode was given. +if test "${enable_maintainer_mode+set}" = set; then + enableval="$enable_maintainer_mode" + USE_MAINTAINER_MODE=$enableval +else + USE_MAINTAINER_MODE=no +fi + + echo "$ac_t""$USE_MAINTAINER_MODE" 1>&6 + + +if test $USE_MAINTAINER_MODE = yes; then + MAINTAINER_MODE_TRUE= + MAINTAINER_MODE_FALSE='#' +else + MAINTAINER_MODE_TRUE='#' + MAINTAINER_MODE_FALSE= +fi + MAINT=$MAINTAINER_MODE_TRUE + + + +case "${host}" in + i[34567]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac + + +if test "${SUPPORTED}" = "yes"; then + SUPPORTED_TRUE= + SUPPORTED_FALSE='#' +else + SUPPORTED_TRUE='#' + SUPPORTED_FALSE= +fi + +if test "${SUPPORTED}" = "yes" ; then + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:870: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CC="gcc" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:900: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_prog_rejected=no + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + break + fi + done + IFS="$ac_save_ifs" +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# -gt 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + set dummy "$ac_dir/$ac_word" "$@" + shift + ac_cv_prog_CC="$@" + fi +fi +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + + if test -z "$CC"; then + case "`uname -s`" in + *win32* | *WIN32*) + # Extract the first word of "cl", so it can be a program name with args. +set dummy cl; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:951: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CC="cl" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + ;; + esac + fi + test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; } +fi + +echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6 +echo "configure:983: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5 + +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +cat > conftest.$ac_ext << EOF + +#line 994 "configure" +#include "confdefs.h" + +main(){return(0);} +EOF +if { (eval echo configure:999: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then + ac_cv_prog_cc_works=yes + # If we can't run a trivial program, we are probably using a cross compiler. + if (./conftest; exit) 2>/dev/null; then + ac_cv_prog_cc_cross=no + else + ac_cv_prog_cc_cross=yes + fi +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + ac_cv_prog_cc_works=no +fi +rm -fr conftest* +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +echo "$ac_t""$ac_cv_prog_cc_works" 1>&6 +if test $ac_cv_prog_cc_works = no; then + { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; } +fi +echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 +echo "configure:1025: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5 +echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6 +cross_compiling=$ac_cv_prog_cc_cross + +echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6 +echo "configure:1030: checking whether we are using GNU C" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.c <<EOF +#ifdef __GNUC__ + yes; +#endif +EOF +if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1039: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then + ac_cv_prog_gcc=yes +else + ac_cv_prog_gcc=no +fi +fi + +echo "$ac_t""$ac_cv_prog_gcc" 1>&6 + +if test $ac_cv_prog_gcc = yes; then + GCC=yes +else + GCC= +fi + +ac_test_CFLAGS="${CFLAGS+set}" +ac_save_CFLAGS="$CFLAGS" +CFLAGS= +echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6 +echo "configure:1058: checking whether ${CC-cc} accepts -g" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + echo 'void f(){}' > conftest.c +if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then + ac_cv_prog_cc_g=yes +else + ac_cv_prog_cc_g=no +fi +rm -f conftest* + +fi + +echo "$ac_t""$ac_cv_prog_cc_g" 1>&6 +if test "$ac_test_CFLAGS" = set; then + CFLAGS="$ac_save_CFLAGS" +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi + + for ac_prog in $CCC c++ g++ gcc CC cxx cc++ cl +do +# Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:1094: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CXX"; then + ac_cv_prog_CXX="$CXX" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CXX="$ac_prog" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CXX="$ac_cv_prog_CXX" +if test -n "$CXX"; then + echo "$ac_t""$CXX" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + +test -n "$CXX" && break +done +test -n "$CXX" || CXX="gcc" + + +echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6 +echo "configure:1126: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5 + +ac_ext=C +# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cxx_cross + +cat > conftest.$ac_ext << EOF + +#line 1137 "configure" +#include "confdefs.h" + +int main(){return(0);} +EOF +if { (eval echo configure:1142: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then + ac_cv_prog_cxx_works=yes + # If we can't run a trivial program, we are probably using a cross compiler. + if (./conftest; exit) 2>/dev/null; then + ac_cv_prog_cxx_cross=no + else + ac_cv_prog_cxx_cross=yes + fi +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + ac_cv_prog_cxx_works=no +fi +rm -fr conftest* +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +echo "$ac_t""$ac_cv_prog_cxx_works" 1>&6 +if test $ac_cv_prog_cxx_works = no; then + { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; } +fi +echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 +echo "configure:1168: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5 +echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6 +cross_compiling=$ac_cv_prog_cxx_cross + +echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6 +echo "configure:1173: checking whether we are using GNU C++" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.C <<EOF +#ifdef __GNUC__ + yes; +#endif +EOF +if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1182: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then + ac_cv_prog_gxx=yes +else + ac_cv_prog_gxx=no +fi +fi + +echo "$ac_t""$ac_cv_prog_gxx" 1>&6 + +if test $ac_cv_prog_gxx = yes; then + GXX=yes +else + GXX= +fi + +ac_test_CXXFLAGS="${CXXFLAGS+set}" +ac_save_CXXFLAGS="$CXXFLAGS" +CXXFLAGS= +echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6 +echo "configure:1201: checking whether ${CXX-g++} accepts -g" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + echo 'void f(){}' > conftest.cc +if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then + ac_cv_prog_cxx_g=yes +else + ac_cv_prog_cxx_g=no +fi +rm -f conftest* + +fi + +echo "$ac_t""$ac_cv_prog_cxx_g" 1>&6 +if test "$ac_test_CXXFLAGS" = set; then + CXXFLAGS="$ac_save_CXXFLAGS" +elif test $ac_cv_prog_cxx_g = yes; then + if test "$GXX" = yes; then + CXXFLAGS="-g -O2" + else + CXXFLAGS="-g" + fi +else + if test "$GXX" = yes; then + CXXFLAGS="-O2" + else + CXXFLAGS= + fi +fi + +for ac_declaration in \ + ''\ + '#include <stdlib.h>' \ + 'extern "C" void std::exit (int) throw (); using std::exit;' \ + 'extern "C" void std::exit (int); using std::exit;' \ + 'extern "C" void exit (int) throw ();' \ + 'extern "C" void exit (int);' \ + 'void exit (int);' +do + cat > conftest.$ac_ext <<EOF +#line 1242 "configure" +#include "confdefs.h" +#include <stdlib.h> +$ac_declaration +int main() { +exit (42); +; return 0; } +EOF +if { (eval echo configure:1250: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + : +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + continue +fi +rm -f conftest* + cat > conftest.$ac_ext <<EOF +#line 1260 "configure" +#include "confdefs.h" +$ac_declaration +int main() { +exit (42); +; return 0; } +EOF +if { (eval echo configure:1267: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + break +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 +fi +rm -f conftest* +done +if test -n "$ac_declaration"; then + echo '#ifdef __cplusplus' >>confdefs.h + echo $ac_declaration >>confdefs.h + echo '#endif' >>confdefs.h +fi + + + echo $ac_n "checking for object suffix""... $ac_c" 1>&6 +echo "configure:1284: checking for object suffix" >&5 +if eval "test \"`echo '$''{'ac_cv_objext'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + rm -f conftest* +echo 'int i = 1;' > conftest.$ac_ext +if { (eval echo configure:1290: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + for ac_file in conftest.*; do + case $ac_file in + *.c) ;; + *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;; + esac + done +else + { echo "configure: error: installation or configuration problem; compiler does not work" 1>&2; exit 1; } +fi +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_objext" 1>&6 +OBJEXT=$ac_cv_objext +ac_objext=$ac_cv_objext + + echo $ac_n "checking for Cygwin environment""... $ac_c" 1>&6 +echo "configure:1308: checking for Cygwin environment" >&5 +if eval "test \"`echo '$''{'ac_cv_cygwin'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.$ac_ext <<EOF +#line 1313 "configure" +#include "confdefs.h" + +int main() { + +#ifndef __CYGWIN__ +#define __CYGWIN__ __CYGWIN32__ +#endif +return __CYGWIN__; +; return 0; } +EOF +if { (eval echo configure:1324: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + ac_cv_cygwin=yes +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + ac_cv_cygwin=no +fi +rm -f conftest* +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_cygwin" 1>&6 +CYGWIN= +test "$ac_cv_cygwin" = yes && CYGWIN=yes +echo $ac_n "checking for mingw32 environment""... $ac_c" 1>&6 +echo "configure:1341: checking for mingw32 environment" >&5 +if eval "test \"`echo '$''{'ac_cv_mingw32'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.$ac_ext <<EOF +#line 1346 "configure" +#include "confdefs.h" + +int main() { +return __MINGW32__; +; return 0; } +EOF +if { (eval echo configure:1353: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + ac_cv_mingw32=yes +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + ac_cv_mingw32=no +fi +rm -f conftest* +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_mingw32" 1>&6 +MINGW32= +test "$ac_cv_mingw32" = yes && MINGW32=yes + + +echo $ac_n "checking for executable suffix""... $ac_c" 1>&6 +echo "configure:1372: checking for executable suffix" >&5 +if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test "$CYGWIN" = yes || test "$MINGW32" = yes; then + ac_cv_exeext=.exe +else + rm -f conftest* + echo 'int main () { return 0; }' > conftest.$ac_ext + ac_cv_exeext= + if { (eval echo configure:1382: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then + for file in conftest.*; do + case $file in + *.c | *.o | *.obj) ;; + *) ac_cv_exeext=`echo $file | sed -e s/conftest//` ;; + esac + done + else + { echo "configure: error: installation or configuration problem: compiler cannot create executables." 1>&2; exit 1; } + fi + rm -f conftest* + test x"${ac_cv_exeext}" = x && ac_cv_exeext=no +fi +fi + +EXEEXT="" +test x"${ac_cv_exeext}" != xno && EXEEXT=${ac_cv_exeext} +echo "$ac_t""${ac_cv_exeext}" 1>&6 +ac_exeext=$EXEEXT + + + ecos_CFLAGS="" + ecos_CXXFLAGS="" + ecos_LDADD="" + ecos_INCLUDES="" + ecos_LIBS="" + + + + + + + + + + + + echo $ac_n "checking "for Visual C++"""... $ac_c" 1>&6 +echo "configure:1420: checking "for Visual C++"" >&5 + MSVC="no"; + if test "${CC}" = "cl" ; then + MSVC="yes" + CXX="cl" + + + + if test "${MSVC}" = "yes" ; then + MSVC_SRCDIR=`cygpath -w ${MSVC_SRCDIR} | tr \\\\\\\\ /` + fi + + + ecos_INCLUDES="${ecos_INCLUDES} \"-I${msvc_srcdir}\"" + ecos_LDADD="-link" + ecos_LIBS="advapi32.lib" + fi + + +if test "${MSVC}" = "yes"; then + MSVC_TRUE= + MSVC_FALSE='#' +else + MSVC_TRUE='#' + MSVC_FALSE= +fi + if test "${MSVC}" = "yes" ; then + echo "$ac_t""unfortunately yes" 1>&6 + else + echo "$ac_t""no" 1>&6 + fi + + + + + + + + echo $ac_n "checking "the default compiler flags"""... $ac_c" 1>&6 +echo "configure:1459: checking "the default compiler flags"" >&5 + + ecosflags_enable_debug="no" + # Check whether --enable-debug or --disable-debug was given. +if test "${enable_debug+set}" = set; then + enableval="$enable_debug" + case "${enableval}" in + yes) ecosflags_enable_debug="yes" ;; + *) ecosflags_enable_debug="no" ;; + esac +fi + + + ecosflags_enable_ansi="no" + if test "${MSVC}" = "yes" ; then + # Check whether --enable-ansi or --disable-ansi was given. +if test "${enable_ansi+set}" = set; then + enableval="$enable_ansi" + case "${enableval}" in + yes) ecosflags_enable_ansi="yes" ;; + *) ecosflags_enable_ansi="no" ;; + esac +fi + + fi + + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -pipe -Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -pipe -Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Woverloaded-virtual" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -nologo -W3" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -nologo -W3 -GR -GX" + else + { echo "configure: error: "default flags for ${CC} are not known"" 1>&2; exit 1; } + fi + + if test "${ecosflags_enable_debug}" = "yes" ; then + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -g -O0" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -g -O0" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -MDd -Zi" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -MDd -Zi" + fi + else + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -O0" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -O0" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -MD -O2" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -MD -O2" + fi + fi + + CFLAGS="${ac_save_CFLAGS}" + CXXFLAGS="${ac_save_CXXFLAGS}" + + echo "$ac_t""done" 1>&6 + + + + + + + + ecos_tcl_version="" + ecos_tcl_incdir="" + ecos_tcl_libdir="" + ecos_tk_libs="" + + + echo $ac_n "checking for Tcl version""... $ac_c" 1>&6 +echo "configure:1531: checking for Tcl version" >&5 + # Check whether --with-tcl-version or --without-tcl-version was given. +if test "${with_tcl_version+set}" = set; then + withval="$with_tcl_version" + + ecos_tcl_version=${with_tcl_version} + +else + + if test "${MSVC}" = "yes" ; then + ecos_tcl_version=80 + elif test "${ac_cv_cygwin}" = "yes" ; then + ecos_tcl_version=80 + else + ecos_tcl_version="" + fi + +fi + + echo "$ac_t""${ecos_tcl_version}" 1>&6 + + echo $ac_n "checking for Tcl installation""... $ac_c" 1>&6 +echo "configure:1553: checking for Tcl installation" >&5 + + # Check whether --with-tcl-header or --without-tcl-header was given. +if test "${with_tcl_header+set}" = set; then + withval="$with_tcl_header" + : +fi + + # Check whether --with-tcl-lib or --without-tcl-lib was given. +if test "${with_tcl_lib+set}" = set; then + withval="$with_tcl_lib" + : +fi + + # Check whether --with-tcl or --without-tcl was given. +if test "${with_tcl+set}" = set; then + withval="$with_tcl" + : +fi + + + + if test "${MSVC}" = "yes" ; then + + if test "${with_tcl_header+set}" = set ; then + ecos_tcl_incdir=${with_tcl_header} + elif test "${with_tcl+set}" = set ; then + ecos_tcl_incdir="${with_tcl}/include" + else + { echo "configure: error: You must specify a Tcl installation with either --with-tcl=<path> or --with-tcl-header=<path>" 1>&2; exit 1; } + fi + + if test \! -r "${ecos_tcl_incdir}/tcl.h" ; then + { echo "configure: error: unable to locate Tcl header file tcl.h" 1>&2; exit 1; } + fi + ecos_msvc_tcl_incdir="${ecos_tcl_incdir}" + + + + if test "${MSVC}" = "yes" ; then + ecos_msvc_tcl_incdir=`cygpath -w ${ecos_msvc_tcl_incdir} | tr \\\\\\\\ /` + fi + + ecos_INCLUDES="${ecos_INCLUDES} \"-I${ecos_msvc_tcl_incdir}\"" + + if test "${with_tcl_lib+set}" = set; then + ecos_tcl_libdir=${with_tcl_lib} + elif test "${with_tcl+set}" = set; then + ecos_tcl_libdir="${with_tcl}/lib" + else + { echo "configure: error: You must specify a Tcl installation with either --with-tcl=<path> or --with-tcl-lib=<path>" 1>&2; exit 1; } + fi + + + + if test "${MSVC}" = "yes" ; then + ecos_tcl_libdir=`cygpath -w ${ecos_tcl_libdir} | tr \\\\\\\\ /` + fi + + ecos_LIBS="${ecos_LIBS} tcl${ecos_tcl_version}.lib" + ecos_LDADD="${ecos_LDADD} \"-libpath=${ecos_tcl_libdir}\"" + + ecos_tk_libs="" + + else + possibles="${with_tcl_header} ${with_tcl}/include ${prefix}/include /usr/include/tcl${ecos_tcl_version} /usr/include" + + ecos_tcl_incdir="" + for i in ${possibles}; do + if test -r "$i/"tcl.h""; then + ecos_tcl_incdir=$i + break + fi + done + + if test \! -r "${ecos_tcl_incdir}/tcl.h" ; then + { echo "configure: error: unable to locate Tcl header file tcl.h" 1>&2; exit 1; } + else + if test "${ecos_tcl_incdir}" != "/usr/include" ; then + ecos_INCLUDES="${ecos_INCLUDES} -I${ecos_tcl_incdir}" + fi + fi + possibles="${with_tcl_lib} ${with_tcl}/lib ${libdir} ${prefix}/lib /usr/lib/tcl$${ecos_tcl_version} /usr/lib" + + ecos_tcl_libdir="" + for i in ${possibles}; do + if test -r "$i/"tclConfig.sh""; then + ecos_tcl_libdir=$i + break + fi + done + + if test \! -r "${ecos_tcl_libdir}/tclConfig.sh" ; then + { echo "configure: error: unable to locate Tcl config file tclConfig.sh" 1>&2; exit 1; } + else + . ${ecos_tcl_libdir}/tclConfig.sh + ecos_LIBS="${ecos_LIBS} -ltcl${ecos_tcl_version} ${TCL_LIBS}" + fi + + possible_tk_libdir=`echo ${ecos_tcl_libdir} | sed -e 's,tcl,tk,'` + possibles="${ecos_tcl_libdir} ${possible_tk_libdir}" + + ecos_tk_libdir="" + for i in ${possibles}; do + if test -r "$i/"tkConfig.sh""; then + ecos_tk_libdir=$i + break + fi + done + + if test \! -r "${ecos_tk_libdir}/tkConfig.sh" ; then + { echo "configure: error: unable to locate Tk config file tkConfig.sh" 1>&2; exit 1; } + else + . ${ecos_tk_libdir}/tkConfig.sh + ecos_tk_libs="-ltk${ecos_tcl_version} ${TK_LIBS}" + for lib in ${TCL_LIBS} ; do + ecos_tk_libs=`echo ${ecos_tk_libs} | sed -e "s!${lib}!!"` + done + fi + fi + + echo "$ac_t""-I${ecos_tcl_incdir} -L${ecos_tcl_libdir}" 1>&6 + + + + if test "${TK_MAJOR_VERSION}" = "8" ; then + if test ${TK_MINOR_VERSION} -lt 3 ; then + { echo "configure: error: The synthetic target ethernet support requires at least version 8.3 of Tcl/Tk" 1>&2; exit 1; } + fi + fi + + + package_dir=`cd ${srcdir} && /bin/pwd` + PACKAGE_VERSION=`dirname ${package_dir}` + PACKAGE_VERSION=`basename ${PACKAGE_VERSION}` + + package_dir=`dirname ${package_dir}` + package_dir=`dirname ${package_dir}` + + possibles="${package_dir}/.. ${package_dir}/../.. ${package_dir}/../../.. ${package_dir}/../../../.." + possibles="${possibles} ${package_dir}/../../../../.. ${package_dir}/../../../../../.." + + repository_root="" + for i in ${possibles}; do + if test -d "$i/"acsupport""; then + repository_root=$i + break + fi + done + + if test "${repository_root}" = "" ; then + { echo "configure: error: Failed to identify this package's position within the eCos repository" 1>&2; exit 1; } + fi + ECOS_REPOSITORY=`cd "${repository_root}/packages/pkgconf/.." && /bin/pwd` + + PACKAGE_DIR=`echo ${package_dir} | sed -e "s:${ECOS_REPOSITORY}/::"` + + PACKAGE_INSTALL="${PACKAGE_DIR}/${PACKAGE_VERSION}" + + + + + + +fi + + +trap '' 1 2 15 +cat > confcache <<\EOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs. It is not useful on other systems. +# If it contains results you don't want to keep, you may remove or edit it. +# +# By default, configure uses ./config.cache as the cache file, +# creating it if it does not exist already. You can give configure +# the --cache-file=FILE option to use a different cache file; that is +# what configure does when it calls configure scripts in +# subdirectories, so they share the cache. +# Giving --cache-file=/dev/null disables caching, for debugging configure. +# config.status only pays attention to the cache file if you give it the +# --recheck option to rerun configure. +# +EOF +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, don't put newlines in cache variables' values. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +(set) 2>&1 | + case `(ac_space=' '; set | grep ac_space) 2>&1` in + *ac_space=\ *) + # `set' does not quote correctly, so add quotes (double-quote substitution + # turns \\\\ into \\, and sed turns \\ into \). + sed -n \ + -e "s/'/'\\\\''/g" \ + -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p" + ;; + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p' + ;; + esac >> confcache +if cmp -s $cache_file confcache; then + : +else + if test -w $cache_file; then + echo "updating cache $cache_file" + cat confcache > $cache_file + else + echo "not updating unwritable cache $cache_file" + fi +fi +rm -f confcache + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Any assignment to VPATH causes Sun make to only execute +# the first set of double-colon rules, so remove it if not needed. +# If there is a colon in the path, we need to keep it. +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d' +fi + +trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15 + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +cat > conftest.defs <<\EOF +s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g +s%[ `~#$^&*(){}\\|;'"<>?]%\\&%g +s%\[%\\&%g +s%\]%\\&%g +s%\$%$$%g +EOF +DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '` +rm -f conftest.defs + + +# Without the "./", some shells look in PATH for config.status. +: ${CONFIG_STATUS=./config.status} + +echo creating $CONFIG_STATUS +rm -f $CONFIG_STATUS +cat > $CONFIG_STATUS <<EOF +#! /bin/sh +# Generated automatically by configure. +# Run this file to recreate the current configuration. +# This directory was configured as follows, +# on host `(hostname || uname -n) 2>/dev/null | sed 1q`: +# +# $0 $ac_configure_args +# +# Compiler output produced by configure, useful for debugging +# configure, is in ./config.log if it exists. + +ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]" +for ac_option +do + case "\$ac_option" in + -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r) + echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion" + exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;; + -version | --version | --versio | --versi | --vers | --ver | --ve | --v) + echo "$CONFIG_STATUS generated by autoconf version 2.13" + exit 0 ;; + -help | --help | --hel | --he | --h) + echo "\$ac_cs_usage"; exit 0 ;; + *) echo "\$ac_cs_usage"; exit 1 ;; + esac +done + +ac_given_srcdir=$srcdir +ac_given_INSTALL="$INSTALL" + +trap 'rm -fr `echo "Makefile:Makefile.in" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15 +EOF +cat >> $CONFIG_STATUS <<EOF + +# Protect against being on the right side of a sed subst in config.status. +sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g; + s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF +$ac_vpsub +$extrasub +s%@SHELL@%$SHELL%g +s%@CFLAGS@%$CFLAGS%g +s%@CPPFLAGS@%$CPPFLAGS%g +s%@CXXFLAGS@%$CXXFLAGS%g +s%@FFLAGS@%$FFLAGS%g +s%@DEFS@%$DEFS%g +s%@LDFLAGS@%$LDFLAGS%g +s%@LIBS@%$LIBS%g +s%@exec_prefix@%$exec_prefix%g +s%@prefix@%$prefix%g +s%@program_transform_name@%$program_transform_name%g +s%@bindir@%$bindir%g +s%@sbindir@%$sbindir%g +s%@libexecdir@%$libexecdir%g +s%@datadir@%$datadir%g +s%@sysconfdir@%$sysconfdir%g +s%@sharedstatedir@%$sharedstatedir%g +s%@localstatedir@%$localstatedir%g +s%@libdir@%$libdir%g +s%@includedir@%$includedir%g +s%@oldincludedir@%$oldincludedir%g +s%@infodir@%$infodir%g +s%@mandir@%$mandir%g +s%@host@%$host%g +s%@host_alias@%$host_alias%g +s%@host_cpu@%$host_cpu%g +s%@host_vendor@%$host_vendor%g +s%@host_os@%$host_os%g +s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g +s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g +s%@INSTALL_DATA@%$INSTALL_DATA%g +s%@PACKAGE@%$PACKAGE%g +s%@VERSION@%$VERSION%g +s%@ACLOCAL@%$ACLOCAL%g +s%@AUTOCONF@%$AUTOCONF%g +s%@AUTOMAKE@%$AUTOMAKE%g +s%@AUTOHEADER@%$AUTOHEADER%g +s%@MAKEINFO@%$MAKEINFO%g +s%@SET_MAKE@%$SET_MAKE%g +s%@MAINTAINER_MODE_TRUE@%$MAINTAINER_MODE_TRUE%g +s%@MAINTAINER_MODE_FALSE@%$MAINTAINER_MODE_FALSE%g +s%@MAINT@%$MAINT%g +s%@SUPPORTED_TRUE@%$SUPPORTED_TRUE%g +s%@SUPPORTED_FALSE@%$SUPPORTED_FALSE%g +s%@CC@%$CC%g +s%@CXX@%$CXX%g +s%@OBJEXT@%$OBJEXT%g +s%@EXEEXT@%$EXEEXT%g +s%@ecos_CFLAGS@%$ecos_CFLAGS%g +s%@ecos_CXXFLAGS@%$ecos_CXXFLAGS%g +s%@ecos_LDADD@%$ecos_LDADD%g +s%@ecos_INCLUDES@%$ecos_INCLUDES%g +s%@ecos_LIBS@%$ecos_LIBS%g +s%@MSVC_SRCDIR@%$MSVC_SRCDIR%g +s%@MSVC_TRUE@%$MSVC_TRUE%g +s%@MSVC_FALSE@%$MSVC_FALSE%g +s%@ecos_tk_libs@%$ecos_tk_libs%g +s%@ECOS_REPOSITORY@%$ECOS_REPOSITORY%g +s%@PACKAGE_DIR@%$PACKAGE_DIR%g +s%@PACKAGE_VERSION@%$PACKAGE_VERSION%g +s%@PACKAGE_INSTALL@%$PACKAGE_INSTALL%g + +CEOF +EOF + +cat >> $CONFIG_STATUS <<\EOF + +# Split the substitutions into bite-sized pieces for seds with +# small command number limits, like on Digital OSF/1 and HP-UX. +ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script. +ac_file=1 # Number of current file. +ac_beg=1 # First line for current file. +ac_end=$ac_max_sed_cmds # Line after last line for current file. +ac_more_lines=: +ac_sed_cmds="" +while $ac_more_lines; do + if test $ac_beg -gt 1; then + sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file + else + sed "${ac_end}q" conftest.subs > conftest.s$ac_file + fi + if test ! -s conftest.s$ac_file; then + ac_more_lines=false + rm -f conftest.s$ac_file + else + if test -z "$ac_sed_cmds"; then + ac_sed_cmds="sed -f conftest.s$ac_file" + else + ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file" + fi + ac_file=`expr $ac_file + 1` + ac_beg=$ac_end + ac_end=`expr $ac_end + $ac_max_sed_cmds` + fi +done +if test -z "$ac_sed_cmds"; then + ac_sed_cmds=cat +fi +EOF + +cat >> $CONFIG_STATUS <<EOF + +CONFIG_FILES=\${CONFIG_FILES-"Makefile:Makefile.in"} +EOF +cat >> $CONFIG_STATUS <<\EOF +for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then + # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in". + case "$ac_file" in + *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'` + ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;; + *) ac_file_in="${ac_file}.in" ;; + esac + + # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories. + + # Remove last slash and all that follows it. Not all systems have dirname. + ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'` + if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then + # The file is in a subdirectory. + test ! -d "$ac_dir" && mkdir "$ac_dir" + ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`" + # A "../" for each directory in $ac_dir_suffix. + ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'` + else + ac_dir_suffix= ac_dots= + fi + + case "$ac_given_srcdir" in + .) srcdir=. + if test -z "$ac_dots"; then top_srcdir=. + else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;; + /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;; + *) # Relative path. + srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix" + top_srcdir="$ac_dots$ac_given_srcdir" ;; + esac + + case "$ac_given_INSTALL" in + [/$]*) INSTALL="$ac_given_INSTALL" ;; + *) INSTALL="$ac_dots$ac_given_INSTALL" ;; + esac + + echo creating "$ac_file" + rm -f "$ac_file" + configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure." + case "$ac_file" in + *Makefile*) ac_comsub="1i\\ +# $configure_input" ;; + *) ac_comsub= ;; + esac + + ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"` + sed -e "$ac_comsub +s%@configure_input@%$configure_input%g +s%@srcdir@%$srcdir%g +s%@top_srcdir@%$top_srcdir%g +s%@INSTALL@%$INSTALL%g +" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file +fi; done +rm -f conftest.s* + +EOF +cat >> $CONFIG_STATUS <<EOF + +EOF +cat >> $CONFIG_STATUS <<\EOF + +exit 0 +EOF +chmod +x $CONFIG_STATUS +rm -fr confdefs* $ac_clean_files +test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1 +
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/configure.in @@ -0,0 +1,92 @@ +dnl Process this file with autoconf to produce a configure script. +dnl ==================================================================== +dnl +dnl configure.in +dnl +dnl configure script for eCos synthetic target ethernet +dnl host-side support +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos synthetic target support. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/07 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + + +AC_INIT(rawether.c) + +dnl Pick up the support files from the top-level acsupport directory. +AC_CONFIG_AUX_DIR(../../../../../../../acsupport) + +ECOS_CHECK_BUILD_ne_SRC +AC_CANONICAL_HOST +AM_INIT_AUTOMAKE(eCos_synthetic_target_ethernet,0.1,0) +AM_MAINTAINER_MODE + +dnl The current version of the synthetic target is implemented only for +dnl x86 Linux platforms, so a test is appropriate here. However +dnl it is not a good idea for the configure script to report an error: +dnl that would prevent any top-level configury working for other +dnl platforms. Instead an automake conditional is used to suppress adding +dnl targets to the build. +case "${host}" in + i[[34567]]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac +AM_CONDITIONAL(SUPPORTED, test "${SUPPORTED}" = "yes") + +if test "${SUPPORTED}" = "yes" ; then + AC_PROG_CC + AC_PROG_CXX + AC_OBJEXT + AC_EXEEXT + ECOS_PROG_MSVC + ECOS_PROG_STANDARD_COMPILER_FLAGS + + ECOS_PATH_TCL + dnl Check that the version of tk is sufficiently recent. + dnl For example the text widget's tag -elide facility was + dnl added between 8.2 and 8.3. Initial development of + dnl the synthetic target used 8.3.1 + if test "${TK_MAJOR_VERSION}" = "8" ; then + if test ${TK_MINOR_VERSION} -lt 3 ; then + AC_MSG_ERROR([The synthetic target ethernet support requires at least version 8.3 of Tcl/Tk]) + fi + fi + ECOS_PACKAGE_DIRS +fi + +dnl There is no real need for a config.h file at this time, since the code +dnl is specific to x86 Linux. This may change in future. +dnl AM_CONFIG_HEADER(config.h:config.h.in) + +AC_OUTPUT(Makefile:Makefile.in)
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/ethernet.tcl @@ -0,0 +1,1226 @@ +# {{{ Banner + +# ============================================================================ +# +# ethernet.tcl +# +# Ethernet support for the eCos synthetic target I/O auxiliary +# +# ============================================================================ +# ####COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos host tools. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# ---------------------------------------------------------------------------- +# +# ####COPYRIGHTEND#### +# ============================================================================ +# #####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Contact(s): bartv +# Date: 2002/08/07 +# Version: 0.01 +# Description: +# Implementation of the ethernet device. This script should only ever +# be run from inside the ecosynth auxiliary. +# +# ####DESCRIPTIONEND#### +# ============================================================================ + +# }}} + +# Overview. +# +# Linux provides a number of different ways of performing low-level +# ethernet I/O from user space, including accessing an otherwise +# unused ethernet card via a PF_PACKET socket, and the tap facility. +# The necessary functionality is not readily accessible from Tcl, +# and performing this low-level I/O generally requires special +# privileges. Therefore the actual I/O happens in a C program +# rawether, installed suid root, +# +# The synthetic ethernet package supports up to four ethernet devices, +# eth0 to eth3. The target definition file maps these onto the +# underlying I/O facility. Instantiation requires spawning a rawether +# process with appropriate arguments, and then waiting for a message +# from that process indicating whether or not the instantiation +# succeeded. That message includes the MAC address. A file event +# handler is installed to handle data detected by raw ether. +# +# eCos can send a number of requests: transmit a packet, start the +# interface (possibly in promiscuous mode), stop the interface, +# or get the various parameters such as the MAC address. All those +# requests can just be passed on to the rawether process. Incoming +# ethernet packets are slightly more complicated: rawether will +# immediately pass these up to this Tcl script, which will buffer +# the packets until they are requested by eCos; in addition an +# interrupt will be raised. + +namespace eval ethernet { + # The protocol between eCos and this script. + variable SYNTH_ETH_TX 0x01 + variable SYNTH_ETH_RX 0x02 + variable SYNTH_ETH_START 0x03 + variable SYNTH_ETH_STOP 0x04 + variable SYNTH_ETH_GETPARAMS 0x05 + variable SYNTH_ETH_MULTIALL 0x06 + + # This array holds all the interesting data for all the + # interfaces, indexed by the instance id. It is also useful + # to keep track of the instance id's associated with ethernet + # devices. + array set data [list] + set ids [list] + + # One-off initialization, for example loading images. If this fails + # then all attempts at instantiation will fail as well. + variable init_ok 1 + variable install_dir $synth::device_install_dir + variable rawether_executable [file join $ethernet::install_dir "rawether"] + + if { ![file exists $rawether_executable] } { + synth::report_error "Ethernet device, rawether executable has not been installed in $ethernet::install_dir.\n" + set init_ok 0 + } elseif { ![file executable $rawether_executable] } { + synth::report_error "Ethernet device, installed program $rawether_executable is not executable.\n" + set init_ok 0 + } + + if { $synth::flag_gui } { + foreach _image [list "netrecord.xbm"] { + variable image_[file rootname $_image] + if { ! [synth::load_image "ethernet::image_[file rootname $_image]" [file join $ethernet::install_dir $_image]] } { + set init_ok 0 + } + } + unset _image + } + + # Maximum number of packets that should be buffered per interface. + # This can be changed in the target definition + variable max_buffered_packets 16 + + if { [synth::tdf_has_option "ethernet" "max_buffer"] } { + set ethernet::max_buffered_packets [synth::tdf_get_option "ethernet" "max_buffer"] + if { ![string is integer -strict $ethernet::max_buffered_packets] } { + synth::report_error "Ethernet device, invalid value in target definition file $synth::target_definition\n \ + Entry max_buffer should be a simple integer, not $ethernet::max_buffered_packets\n" + set init_ok 0 + } + } + + # Define hooks for tx and rx packets + synth::hook_define "ethernet_tx" + synth::hook_define "ethernet_rx" + + # Get a list of known ethernet devices + proc devices_get_list { } { + set result [list] + foreach id $ids { + lappend result $::ethernet::data($id,name) + } + return $result + } + + # ---------------------------------------------------------------------------- + proc instantiate { id name data } { + if { ! $ethernet::init_ok } { + synth::report_warning "Cannot instantiate ethernet device $name, initialization failed.\n" + return "" + } + + # id is a small number that uniquely identifies this device. It will + # be used as an array index. + # name is something like eth0 or eth1 + # There should be no device-specific data + + # The hard work is done by an auxiliary process which needs to be + # spawned off. It requires some additional information to map the + # eCos device name on to a suitable Linux network device such + # as tap0. That information has to come from the config file. + if { ![synth::tdf_has_option "ethernet" $name] } { + synth::report_error "Cannot instantiate ethernet device $name\n \ + No entry in target definition file $synth::target_definition\n" + return "" + } + set use [synth::tdf_get_option "ethernet" $name] + + # Do some validation here, before the rawether process is started. + # Typical entries would look like + # eth0 real eth1 + # eth1 ethertap [[tap-device] [MAC]] + set junk "" + set optional "" + set mac "" + if { [regexp -- {^\s*real\s*[a-zA-z0-9_]+$} $use] } { + # Real ethernet. + } elseif { [regexp -- {^\s*ethertap\s*(.*)$} $use junk optional ] } { + if { "" != $optional } { + if { ! [regexp -- {^tap[0-9]+\s*(.*)$} $optional junk mac ] } { + synth::report_error "Cannot instantiate ethernet device $name\n \ + Invalid entry \"$use\" in target definition file $synth::target_definition\n \ + Should be \"ethertap \[<tap-device> \[<MAC address>\]\]\"\n" + return "" + } + if { "" != $mac } { + if { ! [regexp -- {^\s*([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}\s*} $mac ] } { + synth::report_error "Cannot instantiate ethernet device $name\n \ + Invalid entry \"$use\" in target definition file $synth::target_definition\n \ + MAC address should be of the form xx:xx:xx:xx:xx:xx, all hexadecimal digits.\n" + return "" + } + } + } + } else { + synth::report_error "Cannot instantiate ethernet device $name\n \ + Invalid entry \"$use\" in target definition file $synth::target_definition\n \ + Should be \"real <Linux ethernet device>\" or \"ethertap \[<tap-device> \[<MAC address>\]\]\"\n" + return "" + } + + # Now spawn the rawether process. Its stdin and stdout are + # pipes connected to ecosynth. Its stderr is redirected to + # the current tty to avoid confusion between incoming ethernet + # packets and diagnostics. + if { [catch { set rawether [open "|$ethernet::rawether_executable $use 2>/dev/tty" w+] } message ] } { + synth::report_error "Failed to spawn rawether process for device $name\n $message" + return "" + } + + # No translation on this pipe please. + fconfigure $rawether -translation binary -encoding binary -buffering none + + # Now wait for the rawether device to initialize. It should send back a single + # byte, '0' for failure or '1' for success. Failure is followed by a text + # message which should be reported. Success is followed by a six-byte MAC + # address. + set reply [read $rawether 1] + if { "" == $reply } { + synth::report_error "rawether process for device $name exited unexpectedly.\n" + catch { close $rawether } + return "" + } + + if { "1" != $reply } { + set message [read $rawether 1024] + synth::report_error "rawether process was unable to initialize eCos device $name ($use)\n $message" + catch { close $rawether } + return "" + } + + set reply [read $rawether 7] + if { [string length $reply] != 7 } { + synth::report_error "rawether process for eCos device $name ($use) failed to provide the initialization response.\n" + catch { close $rawether } + return "" + } + set mac [string range $reply 0 5] + set multi [string index $reply 6] + + # Finally allocate an interrupt vector + set vector [synth::interrupt_allocate $name] + if { -1 == $vector } { + # No more interrupts left. An error will have been reported already. + catch { close $rawether } + return "" + } + + # The device is up and running. Fill in the array entries + lappend ethernet::ids $id + set ethernet::data($id,alive) 1 + set ethernet::data($id,name) $name + set ethernet::data($id,rawether) $rawether + set ethernet::data($id,packets) [list] + set ethernet::data($id,packet_count) 0 + set ethernet::data($id,up) 0 + set ethernet::data($id,interrupt_vector) $vector + set ethernet::data($id,MAC) $mac + set ethernet::data($id,multi) $multi + + # Set up the event handler to handle incoming packets. There should + # not be any until the interface is brought up + fileevent $rawether readable [list ethernet::handle_packet $name $id $rawether] + + # Finally return the request handler. The eCos device driver will + # automatically get back an ack. + return ethernet::handle_request + } + + # ---------------------------------------------------------------------------- + # eCos has sent a request to a device instance. Most of these requests should + # just be forwarded to rawether. Some care has to be taken to preserve + # packet boundaries and avoid confusion. It is also necessary to worry + # about the rawether process exiting unexpectedly, which may cause + # puts operations to raise an error (subject to buffering). + # + # Note: it might actually be more efficient to always send a header plus + # 1514 bytes of data, reducing the number of system calls at the cost of + # some extra data copying, but with at least two process switches per + # ethernet transfer efficiency is not going to be particularly good + # anyway. + + proc send_rawether { id packet } { + if { $ethernet::data($id,alive) } { + set chan $ethernet::data($id,rawether) + if { [catch { puts -nonewline $chan $packet } ] } { + set ethernet::data($id,alive) 0 + # No further action is needed here, instead the read handler + # will detect EOF and report abnormal termination. + } + } + } + + proc handle_request { id reqcode arg1 arg2 reqdata reqlen reply_len } { + + if { $reqcode == $ethernet::SYNTH_ETH_TX } { + # Transmit a single packet. To preserve packet boundaries + # this involves a four-byte header containing opcode and + # size, followed by the data itself. + set header [binary format "ccs" $reqcode 0 [string length $reqdata]] + ethernet::send_rawether $id $header + ethernet::send_rawether $id $reqdata + if { $ethernet::logging_enabled } { + ethernet::log_packet $ethernet::data($id,name) "tx" $reqdata + } + synth::hook_call "ethernet_tx" $ethernet::data($id,name) $reqdata + + } elseif { $reqcode == $ethernet::SYNTH_ETH_RX } { + # Return a single packet to eCos, plus a count of the number + # of remaining packets. All packets are buffered here, not + # in rawether. + if { $ethernet::data($id,packet_count) == 0 } { + synth::send_reply 0 0 "" + } else { + incr ethernet::data($id,packet_count) -1 + set packet [lindex $ethernet::data($id,packets) 0] + set ethernet::data($id,packets) [lrange $ethernet::data($id,packets) 1 end] + synth::send_reply $ethernet::data($id,packet_count) [string length $packet] $packet + if { $ethernet::logging_enabled } { + ethernet::log_packet $ethernet::data($id,name) "rx" $packet + } + synth::hook_call "ethernet_rx" $ethernet::data($id,name) $packet + } + } elseif { $reqcode == $ethernet::SYNTH_ETH_START } { + # Start the interface in either normal or promiscuous + # mode, depending on arg1. No reply is expected. Also + # mark the interface as up so that any packets transmitted + # by rawether will not be discarded + set ethernet::data($id,up) 1 + set header [binary format "ccs" $reqcode $arg1 0] + ethernet::send_rawether $id $header + } elseif { $reqcode == $ethernet::SYNTH_ETH_STOP } { + # Stop the interface. All pending packets should be + # discarded and no new packets should be accepted. + # No reply is expected so just pass this on to rawether + set ethernet::data($id,up) 0 + set ethernet::data($id,packets) [list] + set ethernet::data($id,packet_count) 0 + set header [binary format "ccs" $reqcode 0 0] + ethernet::send_rawether $id $header + } elseif { $reqcode == $ethernet::SYNTH_ETH_GETPARAMS } { + # Retrieve the interrupt number, the MAC address, + # and the multicast flag for this interface. eCos should be + # expecting back 6 bytes of data for the MAC, plus an + # extra byte for the multi flag, and the interrupt + # number as the return code. This is all known locally. + set reply "$ethernet::data($id,MAC)$ethernet::data($id,multi)" + synth::send_reply $ethernet::data($id,interrupt_vector) 7 $reply + } elseif { $reqcode == $ethernet::SYNTH_ETH_MULTIALL } { + set header [binary format "ccs" $reqcode $arg1 0] + ethernet::send_rawether $id $header + } else { + synth::report_error "Received unexpected request $reqcode for ethernet device" + } + } + + # ---------------------------------------------------------------------------- + # Incoming data. + # + # The rawether process continually reads packets from the low-level device + # and tries to forward them on to this script, where they will be received + # by an event handler. The packet consists of a four-byte header containing + # the size, followed by the ethernet data itself. This ensures that + # packet boundaries are preserved. Incoming packets are buffered inside + # the auxiliary until eCos sends an RX request, and an interrupt is + # generated. + # + # If eCos stops accepting data or if it cannot process the ethernet packets + # quickly enough then the auxiliary could end up buffering an unbounded + # amount of data. That is a bad idea, so there is an upper bound on the + # number of buffered packets. Any excess packets get dropped. + # + # Error conditions or EOF indicate that rawether has terminated. This + # should not happen during normal operation. rawether should only exit + # because of an ecos_exit hook when the channel gets closed, and the + # event handler gets removed first. + # + # Incoming packets are logged when they are received by eCos, not when + # they are received from the rawether device. That gives a somewhat more + # accurate view of what is happening inside eCos - a packet stuck in + # a fifo has little impact. + proc _handle_packet_error { msg id } { + append msg " No further I/O will happen on this interface.\n" + synth::report_warning $msg + set ethernet::data($id,alive) 0 + fileevent $ethernet::data($id,rawether) readable "" + catch { close $ethernet::data($id,rawether) } + } + + proc handle_packet { name id chan } { + set header [read $chan 4] + if { 4 != [string length $header] } { + ethernet::_handle_packet_error "rawether process for $name has terminated unexpectedly.\n" $id + return + } + + binary scan $header "ccs" code arg1 len + if { $ethernet::SYNTH_ETH_RX != $code } { + set msg "protocol mismatch from rawether process for $name\n" + append msg " Function code $code not recognised.\n" + ethernet::_handle_packet_error $msg $id + return + } + if { ($len < 14) || ($len > 1514) } { + set msg "protocol mismatch from rawether process for $name\n" + append msg " Invalid transfer length $len\n" + ethernet::_handle_packet_error $msg $id + return + } + + set data [read $chan $len] + if { $len != [string length $data] } { + set msg "protocol mismatch from rawether process for $name\n" + append msg " Expected $len byte ethernet packet, received [string length $data] bytes\n" + ethernet::_handle_packet_error $msg $id + return + } + + # The data has been received correctly. Should it be buffered? + if { !$ethernet::data($id,up) } { + return + } + if { $ethernet::data($id,packet_count) >= $ethernet::max_buffered_packets } { + return + } + + # Store the packet, and inform eCos there is work to be done + lappend ethernet::data($id,packets) $data + incr ethernet::data($id,packet_count) + synth::interrupt_raise $ethernet::data($id,interrupt_vector) + + } + + # ---------------------------------------------------------------------------- + # When eCos has exited, the rawether processes can and should be + # shut down immediately. + proc ecos_exited { arg_list } { + foreach id $ethernet::ids { + if { $ethernet::data($id,alive) } { + set ethernet::data($id,alive) 0 + fileevent $ethernet::data($id,rawether) readable "" + catch { close $ethernet::data($id,rawether) } + } + } + } + synth::hook_add "ecos_exit" ethernet::ecos_exited + + # ---------------------------------------------------------------------------- + # Read in various data files for use by the filters + # + # Other possible sources of information include arp, ypcat, and + # dns. Those are avoided for now because they involve running + # additional processes that might hang for a while. Also arp + # would only give useful information for very recently accessed + # machines, NIS might not be running, and dns could involve an + # expensive lookup while the system is running . + + array set services [list] + array set hosts [list] + array set protocols [list] + + proc read_services { } { + catch { + set fd [open "/etc/services" "r"] + while { -1 != [gets $fd line] } { + set junk "" + set name "" + set number "" + set protocol "" + if { [regexp -- {^([-a-zA-Z0-9_]+)\s*([0-9]+)/((?:tcp)|(?:udp)).*$} $line junk name number protocol] } { + set ethernet::services($number,$protocol) $name + } + } + close $fd + } + } + + proc read_protocols { } { + catch { + set fd [open "/etc/protocols" "r"] + while { -1 != [gets $fd line] } { + set junk "" + set name "" + set number "" + if { [regexp -- {^([-a-zA-Z0-9_]+)\s*([0-9]+)\s.*} $line junk name number] } { + set ethernet::protocols($number) $name + } + } + close $fd + } + } + + proc read_hosts { } { + catch { + set fd [open "/etc/hosts" "r"] + while { -1 != [gets $fd line] } { + set junk "" + set name "" + set number "" + + # Deliberately ignore parts of the name after the first . + if { [regexp -- {^([0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3})\s*([a-zA-Z0-9]+)(\.|\s|$)} $line junk number name] } { + # The number should be naturalized if it is going to match reliably + scan $line "%d.%d.%d.%d" a b c d + set index [expr (($a & 0x0FF) << 24) | (($b & 0x0FF) << 16) | (($c & 0x0FF) << 8) | ($d & 0x0FF)] + set ethernet::hosts($index) $name + } + } + close $fd + } + } + + # ---------------------------------------------------------------------------- + # Filtering support. This is only really used when running in GUI mode. + # However all the relevant options are still extracted and validated, + # to avoid warnings about unrecognised options. + + variable logging_enabled 0 + variable max_show 64 + + # Construct a string for the data, either all of it or up to max_show bytes. + # This is just hex in chunks of four bytes. + proc format_hex_data { data } { + set result "" + + set len [string length $data] + if { $len > $ethernet::max_show } { + set len $ethernet::max_show + } + binary scan $data "H[expr 2 * $len]" hex + for { set i 0 } { $i < $len } { incr i 4 } { + append result "[string range $hex [expr $i * 2] [expr ($i * 2) + 7]] " + } + set result [string trimright $result] + return $result + } + + # Given an IPv4 network address, turn it into a.b.c.d and the + # host name as well (if known). The argument should be a 32-bit + # integer. + proc inet_ipv4_ntoa { number } { + set result [format "%d.%d.%d.%d" [expr ($number >> 24) & 0x0FF] [expr ($number >> 16) & 0x0FF] \ + [expr ($number >> 8) & 0x0FF] [expr $number & 0x0FF]] + if { [info exists ethernet::hosts($number) ] } { + append result "($ethernet::hosts($number))" + } + return $result + } + + # Given an ipv4 address encapsulated in an IPv6 address, do the necessary + # conversion. We have something like 123:4567, we want a.b.c.d plus + # a host address. + proc inet_ipv4_in_ipv6_ntoa { top bottom } { + if { "" == $top } { + set top 0 + } + if { "" == $bottom } { + set bottom 0 + } + set top "0x$top" + set bottom "0x$bottom" + + set ipv4 [expr ($top << 16) | $bottom] + return inet_ipv4_ntoa $ipv4 + } + + # Ditto for IPv6. The argument should be a 32-digit hexadecimal string. + # For now there is no simple way of mapping these onto host names, + # unless the address is an IPv4-mapped or compatible one, or one of + # special cases such as loopback. + proc inet_ipv6_ntoa { number } { + # We have something like 12345678abcdef. Start by inserting the appropriate + # colons. + set result [format "%s:%s:%s:%s:%s:%s:%s:%s" [string range $number 0 3] [string range $number 4 7] \ + [string range $number 8 11] [string range $number 12 15] [string range $number 16 19] \ + [string range $number 20 23] [string range $number 24 27] [string range $number 28 31]] + # Now eliminate unwanted 0's at the start of each range. + regsub {^0+} $result {} result + regsub -all {:0+} $result {:} result + + # If we have ended up with sequences of colons, abbreviate + # them into pairs. + regsub -all {::+} $result {::} result + + # There are a couple of special addresses + if { "::1" == $result } { + return "::1(loopback)" + } elseif { "::" == $result } { + return "::(IN6ADDR_ANY)" + } + + # Look for IPv4-mapped addresses. + set junk "" + set ipv4_1 "" + set ipv4_2 "" + if { [regexp -nocase -- {::ffff:([0-9a-f]{0,3}):([0-9a-f]{0,3})$} $result junk ipv4_1 ipv4_2] } { + set result [inet_ipv4_in_ipv6_nto $ipv4_1 $ipv4_2] + return "::FFFF:$result" + } elseif { [regexp -nocase -- {::([0-9a-f]{0,3}):([0-9a-f]{0,3})$} $result junk ipv4_1 ipv4_2] } { + set result [inet_ipv4_in_ipv6_nto $ipv4_1 $ipv4_2] + return "::$result" + } else { + # Could still be aggregatable global unicast, link-local, site-local or multicast. + # But not decoded further for now. + return $result + } + } + + proc log_packet { device direction packet } { + if { [string length $packet] < 14 } { + return + } + binary scan $packet {H2H2H2H2H2H2 H2H2H2H2H2H2 S} dest5 dest4 dest3 dest2 dest1 dest0 src5 src4 src3 src2 src1 src0 eth_protocol + set packet [string range $packet 14 end] + + set ether_msg "$device $direction: [string length $packet] bytes, " + append ether_msg [format ">%s:%s:%s:%s:%s:%s <%s:%s:%s:%s:%s:%s" $dest5 $dest4 $dest3 $dest2 $dest1 $dest0 $src5 $src4 $src3 $src2 $src1 $src0] + set eth_protocol [expr $eth_protocol & 0x0FFFF] + if { $eth_protocol <= 1536 } { + append ether_msg " 802.3 " + if { [string length $packet] < 8 } { + return + } + binary scan $packet {a6 S} junk eth_protocol + set packet [string range $packet 8 end] + } + append ether_msg [format " %04x" $eth_protocol] + if { $eth_protocol == 0x0800 } { + append ether_msg "(ip)" + } elseif { $eth_protocol == 0x00806 } { + append ether_msg "(arp)" + } elseif { $eth_protocol == 0x08035 } { + append ether_msg "(rarp)" + } + append ether_msg " [ethernet::format_hex_data $packet]\n" + synth::output $ether_msg "eth_ether" + + if { 0x0806 == $eth_protocol } { + # An ARP request. This should always be 28 bytes. + if { [string length $packet] < 28 } { + return + } + binary scan $packet {SSccS H2H2H2H2H2H2 I H2H2H2H2H2H2 I} hard_type prot_type hard_size prot_size op \ + sender5 sender4 sender3 sender2 sender1 sender0 sender_ip \ + target5 target4 target3 target2 target1 target0 target_ip + set hard_type [expr $hard_type & 0x0FFFF] + set prot_type [expr $prot_type & 0x0FFFF] + set hard_size [expr $hard_size & 0x0FF] + set prot_size [expr $prot_size & 0x0FF] + set op [expr $op & 0x0FFFF] + set sender_ip [expr $sender_ip & 0x0FFFFFFFF] + set target_ip [expr $target_ip & 0x0FFFFFFFF] + + set arp_msg "$device $direction: ARP " + if { $op == 1 } { + append arp_msg "request " + } elseif { $op == 2 } { + append arp_msg "reply " + } else { + append_arp_msg "<unknown opcode> " + } + if { $hard_type != 1 } { + append arp_msg "(unexpected hard_type field $hard_type, should be 1) " + } + if { $prot_type != 0x0800 } { + append arp_msg "(unexpected prot_type field $prot_type, should be 0x0800) " + } + if { $hard_size != 6 } { + append arp_msg "(unexpected hard_size field $hard_size, should be 6) " + } + if { $prot_size != 4 } { + append arp_msg "(unexpected prot_size field $prot_size, should be 4) " + } + append arp_msg [format ", sender %s:%s:%s:%s:%s:%s " $sender5 $sender4 $sender3 $sender2 $sender1 $sender0] + append arp_msg [ethernet::inet_ipv4_ntoa $sender_ip] + append arp_msg [format ", target %s:%s:%s:%s:%s:%s " $target5 $target4 $target3 $target2 $target1 $target0] + append arp_msg [ethernet::inet_ipv4_ntoa $target_ip] + append arp_msg "\n" + + synth::output $arp_msg "eth_arp" + return + } + + if { 0x0800 != $eth_protocol } { + return + } + + # We have an IP packet. Is this IPv4 or IPv6? The first byte contains + # the version and the overall length of the IP header in 32-bit words + if { [string length $packet] < 20 } { + return + } + binary scan $packet {c} tmp + set ip_version [expr ($tmp >> 4) & 0x0F] + set ip_hdrsize [expr $tmp & 0x0F] + if { 4 == $ip_version } { + binary scan $packet {ccSSSccSII} tmp tos len id frag ttl ip_protocol checksum source_ip dest_ip + set ipv4_msg "$device $direction: IPv4" + if { 0 != $tos } { + append ipv4_msg [format " tos %02x," [expr $tos & 0x0FF]] + } + append ipv4_msg [format " len %d, id %d," [expr $len & 0x0FFFF] [expr $id & 0x0FFFF]] + if { 0 != $frag } { + append ipv4_msg [format " frag %u" [expr 8 * ($frag & 0x01FFF)]] + if { 0 != ($frag & 0x04000) } { + append ipv4_msg " DF" + } + if { 0 != ($frag & 0x02000) } { + append ipv4_msg " MF" + } + append ipv4_msg "," + } + append ipv4_msg [format " ttl %d," $ttl] + set ip_protocol [expr $ip_protocol & 0x0FF] + if { [info exists ethernet::protocols($ip_protocol)] } { + append ipv4_msg " $ethernet::protocols($ip_protocol)," + } else { + append ipv4_msg [format " protocol %d" $ip_protocol] + } + + set source_name [ethernet::inet_ipv4_ntoa $source_ip] + set dest_name [ethernet::inet_ipv4_ntoa $dest_ip] + append ipv4_msg " >${dest_name}, <${source_name}\n" + + synth::output $ipv4_msg "eth_ipv4" + + # If this packet is a fragment other than the first, do not try to decode + # subsequent packets. The header information will not be present. + if { 0 != ($frag & 0x01FFF)} { + return + } + set packet [string range $packet [expr 4 * $ip_hdrsize] end] + + } elseif { 6 == $ip_version } { + if { [string length $packet] < 40 } { + return + } + binary scan $packet {ISccH16H16} flow payload_length next_header hop_limit source_ip dest_ip + set ipv6_msg "$device $direction: IPv6" + set prio [expr ($flow & 0x0F000000) >> 24] + set flow [expr $flow & 0x00FFFFFF] + if { 0 != $flow } { + append ipv6_msg [format " flow %04x prio %x," $flow $prio] + } + append ipv6_msg " payload [expr $payload bytes & 0x0FFFF]," + append ipv6_msg " hop limit [expr $hop_limit & 0x0FF]," + set next_header [expr $next_header & 0x0FF] + if { [info exists ethernet::protocols($next_header)] } { + append ipv6_msg " $ethernet::protocols($next_header)," + } else { + append ipv6_msg [format " protocol %d," $next_header] + } + + set source_name [ethernet::inet_ipv6_ntoa $source_ip] + set dest_name [ethernet::inet_ipv6_ntoa $dest_ip] + append ipv6_msg " >${dest_name}, <${source_name}\n" + + synth::output $ipv6_msg "eth_ipv6" + + set packet [string range $packet 40 end] + + } else { + synth::output "$device $direction: unknown IP version $ip_version\n" "eth_ipv4" + return + } + + + # Now for some known protocols, icmp, tcp, udp and icmpv6 + # Possible ipv6-frag should be handled here as well. The + # fragment header should be followed by another header such + # as tcp or udp. + if { 1 == $ip_protocol } { + # ipv4 ICMP + if { [string length $packet] < 4 } { + return + } + binary scan $packet {ccS} code type checksum + + set icmpv4_msg "$device $direction: ICMPv4 " + set error 0 + set data 0 + switch -- $code { + 0 { + append icmpv4_msg "ping reply" + if { [string length $packet] >= 8 } { + # The id and seq are in the sender's format, not network format. + # We have to assume either little or bigendian, so go for the former + binary scan $packet {iss} junk id seq + append icmpv4_msg [format " id %u, seq %u" [expr $id & 0x0FFFF] [expr $seq & 0x0FFFF]] + set data 1 + set packet [string range $packet 8 end] + } + } + 3 { + append icmpv4_msg "unreachable/" + switch -- $type { + 0 { append icmpv4_msg "network" } + 1 { append icmpv4_msg "host" } + 2 { append icmpv4_msg "protocol" } + 3 { append icmpv4_msg "port" } + 4 { append icmpv4_msg "frag needed but don't frag set" } + 5 { append icmpv4_msg "source route failed" } + 6 { append icmpv4_msg "destination network unknown" } + 7 { append icmpv4_msg "destination host unknown" } + 8 { append icmpv4_msg "source host isolated" } + 9 { append icmpv4_msg "destination network prohibited" } + 10 { append icmpv4_msg "destination host prohibited" } + 11 { append icmpv4_msg "network for TOS" } + 12 { append icmpv4_msg "host for TOS" } + 13 { append icmpv4_msg "communication prohibited" } + 14 { append icmpv4_msg "host precedence violation" } + 15 { append icmpv4_msg "precedence cutoff" } + default { append icmpv4_msg "unknown" } + } + set error 1 + } + 4 { + append icmpv4_msg "source quench" + set error 1 + } + 5 { + append icmpv4_msg "redirect/" + switch -- $type { + 0 { append icmpv4_msg "network" } + 1 { append icmpv4_msg "host" } + 2 { append icmpv4_msg "tos & network" } + 3 { append icmpv4_msg "tos & host" } + default { append icmpv4_msg "unknown" } + } + set error 1 + } + 8 { + append icmpv4_msg "ping request" + if { [string length $packet] >= 8 } { + binary scan $packet {iss} junk id seq + append icmpv4_msg [format " id %u, seq %u" [expr $id & 0x0FFFF] [expr $seq & 0x0FFFF]] + set data 1 + set packet [string range $packet 8 end] + } + } + 9 { + append icmpv4_msg "router advertisement" + } + 10 { + append icmpv4_msg "router solicitation" + } + 11 { + append icmpv4_msg "time exceeded/" + switch -- $type { + 0 { append icmpv4_msg "transit" } + 1 { append icmpv4_msg "reassembly" } + default { append icmpv4_msg "unknown" } + } + set error 1 + } + 12 { + append icmpv4_msg "parameter problem/" + switch -- $type { + 0 { append icmpv4_msg "IP header bad" } + 1 { append icmpv4_msg "required option missing" } + default { append icmpv4_msg "unknown" } + } + set error 1 + } + 13 { + append icmpv4_msg "timestamp request" + } + 14 { + append icmpv4_msg "timestamp reply" + } + 15 { + append icmpv4_msg "information request" + } + 16 { + append icmpv4_msg "information reply" + } + 17 { + append icmpv4_msg "address mask request" + } + 18 { + append icmpv4_msg "address mask reply" + } + default { + append icmpv4_msg "unknown" + } + } + if { $error && ([string length $packet] >= 36) } { + # The ICMP message contains an IP header and hopefully the TCP or UDP ports as well + # Only deal with the simple cases. + binary scan $packet {iiccSiccSIISS} icmp_junk1 icmp_junk2 ip_lenver ip_junk1 ip_junk2 ip_junk3 ip_junk4 ip_protocol ip_junk5 \ + ip_source ip_dest ip_source_port ip_dest_port + if { (5 == ($ip_lenver & 0x0F)) && ((6 == $ip_protocol) || (17 == $ip_protocol)) } { + if { 6 == $ip_protocol } { + append icmpv4_msg ", tcp" + } else { + append icmpv4_msg ", udp" + } + append icmpv4_msg " >[ethernet::inet_ipv4_ntoa $ip_dest]:$ip_dest_port <[ethernet::inet_ipv4_ntoa $ip_source]:$ip_source_port" + } + } + + append icmpv4_msg "\n" + synth::output $icmpv4_msg "eth_icmpv4" + + # Only some of the requests contain additional data that should be displayed + if { !$data } { + return + } + + } elseif { 58 == $ip_protocol } { + # ipv6 ICMP + if { [string length $packet] < 4 } { + return + } + binary scan $packet {ccS} code type checksum + + set icmpv6_msg "$device $direction: ICMPv6 " + set error 0 + set data 0 + switch -- $code { + 1 { + append icmpv6_msg "unreachable/" + switch -- $type { + 0 { append icmpv6_msg "no route" } + 1 { append icmpv6_msg "prohibited" } + 2 { append icmpv6_msg "not a neighbour" } + 3 { append icmpv6_msg "any other reason" } + 4 { append icmpv6_msg "UDP port unreachable" } + default { append icmpv6_msg "unknown" } + } + set error 1 + } + 2 { + append icmpv6_msg "packet too big" + set error 1 + } + 3 { + append icmpv6_msg "time exceeded/" + switch -- $type { + 0 { append icmpv6_msg "hop limit" } + 1 { append icmpv6_msg "fragment reassembly" } + default { append icmpv6_msg "unknown" } + } + set error 1 + } + 4 { + append icmpv6_msg "parameter problem" + switch -- $type { + 0 { append icmpv6_msg "erroneous header" } + 1 { append icmpv6_msg "unrecognized next header" } + 2 { append icmpv6_msg "unrecognized option" } + default { append icmpv6_msg "unknown" } + } + set error 1 + } + 128 { + append icmpv6_msg "ping request" + # FIXME: is this the same format as for icmpv4? + } + 129 { + append icmpv6_msg "ping reply" + # FIXME: is this the same format as for icmpv4? + } + 130 { + append icmpv6_msg "group membership query" + } + 131 { + append icmpv6_msg "group membership report" + } + 132 { + append icmpv6_msg "group membership reduction" + } + 133 { + append icmpv6_msg "router solicitation" + } + 134 { + append icmpv6_msg "router advertisement" + } + 135 { + append icmpv6_msg "neighbour solicitation" + } + 136 { + append icmpv6_msg "neighbour advertisement" + } + 137 { + append icmpv6_msg "redirect" + } + } + + if { $error && ([string length $packet] >= 44) } { + # The ICMP message contains an IPv6 header and hopefully the TCP or UDP ports as well + binary scan $packet {isccH16H16SS} icmp_junk1 icmp_junk2 ip_protocol icmp_junk3 ip_source ip_dest ip_source_port ip_dest_port + if { 6 == $ip_protocol } { + append icmpv6_msg ", tcp" + } elseif { 17 == $ip_protocol } { + append icmpv6_msg ", udp" + } + append icmpv6_msg " >[ethernet::inet_ipv4_ntoa $ip_dest]:$ip_dest_port <[ethernet::inet_ipv6_ntoa $ip_source]:$ip_source_port" + } + append icmpv6_msg "\n" + synth::output $icmpv6_msg "eth_icmpv6" + + if { !$data } { + return + } + + } elseif { 6 == $ip_protocol } { + # TCP + if { [string length $packet] < 20 } { + return + } + binary scan $packet {SSIIccSSS} source_port dest_port seq ack hdrsize flags winsize checksum urg + set source_port [expr $source_port & 0x0FFFF] + set dest_port [expr $dest_port & 0x0FFFF] + set hdrsize [expr ($hdrsize >> 4) & 0x0F] + set winsize [expr $winsize & 0x0FFFF] + set urg [expr $urg & 0x0FFFF] + + set tcp_msg "$device $direction tcp: " + append tcp_msg " >${dest_name}:${dest_port}" + if { [info exists ethernet::services($dest_port,udp)] } { + append tcp_msg "($ethernet::services($dest_port,udp))" + } + append tcp_msg "<${source_name}:$source_port" + if { [info exists ethernet::services($source_port,udp)] } { + append tcp_msg "($ethernet::services($source_port,udp))" + } + + append tcp_msg ", " + if { $flags & 0x08 } { + append tcp_msg "PSH " + } + if { $flags & 0x04 } { + append tcp_msg "RST " + } + if { $flags & 0x02 } { + append tcp_msg "SYN " + } + if { $flags & 0x01 } { + append tcp_msg "FIN " + } + append tcp_msg [format "seq %u" $seq] + + if { 0 != ($flags & 0x010) } { + append tcp_msg [format ", ACK %u" $ack] + } + append tcp_msg ", win $winsize" + if { 0 != ($flags & 0x020) } { + append tcp_msg ", URG $urg" + } + append tcp_msg "\n" + synth::output $tcp_msg "eth_tcp" + + set packet [string range $packet [expr 4 * $hdrsize] end] + } elseif { 17 == $ip_protocol } { + # UDP + if { [string length $packet] < 8 } { + return + } + set udp_msg "$device $direction: udp " + binary scan $packet {SSSS} source_port dest_port len checksum + set source_port [expr $source_port & 0x0FFFF] + set dest_port [expr $dest_port & 0x0FFFF] + append udp_msg [format "%d bytes, " [expr $len & 0x0FFFF]] + append udp_msg " >${dest_name}:$dest_port" + if { [info exists ethernet::services($dest_port,udp)] } { + append udp_msg "($ethernet::services($dest_port,udp))" + } + append udp_msg "<${source_name}:$source_port" + if { [info exists ethernet::services($source_port,udp)] } { + append udp_msg "($ethernet::services($source_port,udp))" + } + append udp_msg "\n" + synth::output $udp_msg "eth_udp" + set packet [string range $packet 8 end] + } else { + # Unknown protocol, so no way of knowing where the data starts. + return + } + + # At this point we may have a payload. This should be + # dumped in both hex and ascii. The code tries to preserve + # alignment. + if { [string length $packet] == 0 } { + return + } + set hexdata_msg "$device $direction: data [format_hex_data $packet]\n" + set asciidata_msg "$device $direction: data " + set len [string length $packet] + if { $len > $ethernet::max_show } { + set len $ethernet::max_show + } + for { set i 0 } { $i < $len } { incr i } { + set char [string index $packet $i] + if { "\r" == $char } { + append asciidata_msg "\\r" + } elseif { "\n" == $char } { + append asciidata_msg "\\n" + } elseif { "\t" == $char } { + append asciidata_msg "\\t" + } elseif { [string is print -strict $char] } { + append asciidata_msg " $char" + } else { + append asciidata_msg "??" + } + if { 3 == ($i % 4) } { + append asciidata_msg " " + } + } + append asciidata_msg "\n" + synth::output $hexdata_msg "eth_hexdata" + synth::output $asciidata_msg "eth_asciidata" + + return + } + + # A utility for handling the ethernet record button on the toolbar + proc logging_button_toggle { } { + if { $ethernet::logging_enabled } { + set ethernet::logging_enabled 0 + .toolbar.ethernet_logging configure -relief flat + } else { + set ethernet::logging_enabled 1 + .toolbar.ethernet_logging configure -relief sunken + } + } + + # A dummy procedure for initialization. All of this could execute at + # the toplevel, but there are lots of locals. + proc filters_initialize { } { + ethernet::read_services + ethernet::read_protocols + ethernet::read_hosts + + # Add a button on the toolbar for enabling/disabling logging. + # Also add an entry to the help menu + if { $synth::flag_gui } { + button .toolbar.ethernet_logging -image $ethernet::image_netrecord -borderwidth 2 -relief flat -command ethernet::logging_button_toggle] + pack .toolbar.ethernet_logging -side left -padx 2 + synth::register_balloon_help .toolbar.ethernet_logging "Record ethernet traffic" + + if { [synth::tdf_has_option "ethernet" "logging"] } { + set ethernet::logging_enabled [synth::tdf_get_option "ethernet" "logging"] + } else { + # Default to logging ethernet traffic. This may not be the right thing to do + # because users may see too much output by default, but it is easy enough + # to disable. + set ethernet::logging_enabled 1 + } + if { $ethernet::logging_enabled } { + .toolbar.ethernet_logging configure -relief sunken + } + + set ethernet_help [file join $synth::device_src_dir "doc" "devs-eth-synth-ecosynth.html"] + if { ![file readable $ethernet_help] } { + synth::report_warning "Failed to locate synthetic ethernet documentation $ethernet_help\n \ + Help->Ethernet target menu option disabled.\n" + set ethernet_help "" + } + if { "" == $ethernet_help } { + .menubar.help add command -label "Ethernet" -state disabled + } else { + .menubar.help add command -label "Ethernet" -command [list synth::handle_help "file://$ethernet_help"] + } + } + + if { [synth::tdf_has_option "ethernet" "max_show"] } { + set ethernet::max_show [synth::tdf_get_option "ethernet" "max_show"] + if { ! [string is integer -strict $ethernet::max_show] } { + synth::report_error "Ethernet device, invalid value in target definition file $synth::target_definition\n \ + Entry max_show should be a simple integer, not $ethernet::max_show\n" + set ethernet::init_ok 0 + } + } + + # Filters. First, perform some validation. + set known_filters [list "ether" "arp" "ipv4" "ipv6" "icmpv4" "icmpv6" "udp" "tcp" "hexdata" "asciidata"] + set tdf_filters [synth::tdf_get_options "ethernet" "filter"] + array set filter_options [list] + + foreach filter $tdf_filters { + if { 0 == [llength $filter] } { + synth::report_error "Ethernet device, invalid value in target definition file $synth::target_definition\n \ + Option \"filter\" requires the name of a known filters.\n" + set ethernet::init_ok 0 + continue + } + set name [lindex $filter 0] + if { [info exists filter_options($name)] } { + synth::report_error "Ethernet device, invalid value in target definition file $synth::target_definition\n \ + \"filter $name\" should be defined only once.\n" + set ethernet::init_ok 0 + continue + } + if { -1 == [lsearch -exact $known_filters $name] } { + synth::report_error "Ethernet device, invalid value in target definition file $synth::target_definition\n \ + Unknown filter \"$name\".\n \ + Known filters are $known_filters\n" + set ethernet::init_ok 0 + continue + } + set filter_options($name) [lrange $filter 1 end] + } + + # We now know about all the filter entries in the target definition file. + # Time to create the filters themselves, provided we are running in GUI mode. + if { $synth::flag_gui } { + foreach filter $known_filters { + if { ! [info exists filter_options($filter)] } { + synth::filter_add "eth_$filter" -text "ethernet $filter" + } else { + array set parsed_options [list] + set message "" + if { ![synth::filter_parse_options $filter_options($filter) parsed_options message] } { + synth::report_error \ + "Invalid entry in target definition file $synth::target_definition\n \ + Ethernet filter $filter\n $message" + set ethernet::init_ok 0 + } else { + set parsed_options("-text") "ethernet $filter" + synth::filter_add_parsed "eth_$filter" parsed_options + } + } + } + } + } + ethernet::filters_initialize +} + +return ethernet::instantiate
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/ethernet.tdf @@ -0,0 +1,117 @@ +# Target definition file fragment for ethernet devices. +# +# The target-side can instantiate up to four ethernet devices, +# eth0 to eth3. Each instance requires an entry in the +# target definition file specifying what underlying Linux +# kernel facility should be used to implement the I/O. This +# can take the following forms: +# +# 1) an existing ethernet device, e.g. +# eth0 real eth1 +# thus mapping the eCos device eth0 on to the Linux device eth1. +# The latter network interface must not currently be in use +# by Linux. Traffic will flow to and from the real ethernet, and +# communication is possible with any machine on the LAN. +# +# 2) the Linux kernel's tap facility. +# eth0 ethertap +# This will result in a Linux ethernet interface such as +# tap3 appearing. The interface can be configured like any +# other network device, for example by using the ifconfig +# command or by creating a configuration file +# /etc/sysconfig/network-scripts/ifcfg-tap3 +# The result is a virtual ethernet segment visible only +# to the Linux host and eCos. Bridge software inside the +# Linux host can be used to connect eCos to a larger network. +# +# Optionally a specific tap device can be configured, +# eth0 ethertap tap3 +# By default the code will pick up the next free tap device, +# usually tap0. If the Linux interface should come up automatically +# then this can be achieved with an ifcfg-tap?? configuration +# file. Explicitly specifying the tap device can avoid some +# confusion. +# +# Both the eCos and the Linux network interface need a unique +# MAC address. There is no real ethernet hardware involved to +# supply these addresses, so they have to be invented. The +# Linux kernel will automatically invent one for its interface. +# By default a random MAC address will also be generated for +# the eCos interface, but to make the system more deterministic +# it is possible to specify the MAC address to be used. This +# facility is only available in conjunction with an explicit +# tap device, e.g.: +# eth0 ethertap tap3 00:01:02:03:04:05 +# The MAC address should be in the usual format: six 2-digit +# hexadecimal numbers separated by colons. It is the user's +# responsibility to make sure that the address specified +# does not match any other real or invented address visible +# on the local network. +# +# It is possible that bursts of ethernet traffic occur, causing +# packets to arrive faster than they can be forwarded to and +# processed by eCos. It is desirable that some number of packets +# be buffered, matching the behaviour of many ethernet devices +# with built-in fifos. However the number of these packets should +# be restricted: if eCos stops accepting ethernet packets or +# cannot handle the data quickly enough, then it is possible that +# an unlimited number of packets could accumulate in the I/O +# auxiliary until all available memory and swap space is exhausted. +# By default up to 16 packets will be buffered per device, but +# this can be changes with the max_buffer option. +# +# The ethernet emulation code can perform logging and limited +# analysis of each ethernet packet. For example if a particular +# packet is an IPv4 ICMP request then details of the request +# will be logged to the main text window. The appearance of the +# various filters can be controlled here, using the usual +# options such as -foreground, -background, and -hide. +# +# This logging of each ethernet frame can be somewhat time-consuming +# and, for a long run, require a lot of memory. Logging can be +# disabled by default if desired, and a button on the toolbar allows +# this setting to be toggled. +# +# Ethernet packets can be up to 1514 bytes, so showing entire packets +# on a single line can mean very wide lines. In practice the interesting +# data is usually at the start, so the output can be truncated to a +# maximum number of bytes. The data is displayed in hex so each byte +# requires two columns, and some spacing will be added as well to +# improve legibility. + +synth_device ethernet { + ## Map eCos devices on to Linux ones. + + # eth0 real eth1 + # eth0 ethertap + # eth0 ethertap tap3 + eth0 ethertap tap3 00:FE:42:63:84:A5 + + # eth1 ethertap tap4 00:FE:12:34:56:78 + # eth2 ethertap tap5 00:FE:9A:BC:DE:F0 + # eth3 real eth2 + + ## Maximum number of packets that should be buffered per interface. + ## Default 16 + max_buffer 32 + + ## Should packets be logged? The default is yes. + # logging 0 + + ## Maximum number of data bytes to be shown. + ## Default 64 + # max_show 128 + + ## Filters for the various recognised protocols. + ## By default all filters are visible and use standard colours. + # filter ether -hide 0 + # filter arp -hide 1 + # filter ipv4 -hide 1 + # filter ipv6 -hide 1 + # filter icmpv4 -hide 1 + # filter icmpv6 -hide 1 + # filter udp -hide 1 + # filter tcp -hide 1 + # filter hexdata -hide 0 + # filter asciidata -hide 0 +}
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/fromnet.xbm @@ -0,0 +1,4 @@ +#define fromnet_width 8 +#define fromnet_height 8 +static unsigned char fromnet_bits[] = { + 0x00, 0x87, 0xa5, 0x95, 0xfd, 0x95, 0xa5, 0x87};
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/netrecord.xbm @@ -0,0 +1,6 @@ +#define netrecord_width 16 +#define netrecord_height 15 +static unsigned char netrecord_bits[] = { + 0x00, 0x00, 0xce, 0x39, 0x4a, 0x08, 0xce, 0x09, 0x46, 0x08, 0xca, 0x39, + 0x00, 0x00, 0x0e, 0x20, 0x4a, 0x24, 0x2a, 0x28, 0xfa, 0x3f, 0x2a, 0x28, + 0x4a, 0x24, 0x0e, 0x20, 0x00, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/rawether.c @@ -0,0 +1,757 @@ +//============================================================================ +// +// rawether.c +// +// A utility program to perform low-level ethernet operations +// +//============================================================================ +//####COPYRIGHTBEGIN#### +// +// ---------------------------------------------------------------------------- +// Copyright (C) 2002 Bart Veer +// +// This file is part of the eCos host tools. +// +// This program is free software; you can redistribute it and/or modify it +// under the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 of the License, or (at your option) +// any later version. +// +// This program is distributed in the hope that it will be useful, but WITHOUT +// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +// more details. +// +// You should have received a copy of the GNU General Public License along with +// this program; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// ---------------------------------------------------------------------------- +// +//####COPYRIGHTEND#### +//============================================================================ +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contact(s): bartv +// Date: 2002/08/07 +// Version: 0.01 +// Description: +// +// This program is fork'ed by the ethernet.tcl script running inside +// the synthetic target auxiliary. It is responsible for performing +// low-level ethernet I/O. +// +//####DESCRIPTIONEND#### +//============================================================================ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <signal.h> +#include <limits.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <netinet/in.h> +#include <netinet/if_ether.h> +#include <linux/if_packet.h> +#include <linux/if_ether.h> +#include <linux/if_tun.h> + +// The protocol between host and target is defined by a private +// target-side header. +#include "../src/protocol.h" + +// Allow debug builds. Set this flag to 0, 1 or 2 +#define DEBUG 0 + +// ---------------------------------------------------------------------------- +// Statics. + +// Are we using a real ethernet device or ethertap? +static int real_ether = 0; +static int ethertap = 0; + +// The six-byte MAC address, which must be returned to eCos +static unsigned char MAC[6]; + +// Does the driver support multicasting? +static int multicast_supported = 0; + +// The file descriptor for incoming data ethernet packets. +// Used for select() together with fd 0 corresponding to ecosynth +static int ether_fd = -1; + +// Is the interface up? +static int up = 0; + +// Space for incoming and outgoing packets. In the case of rx_buffer +// there are an extra four bytes at the front for the protocol header. +#define MTU 1514 +static unsigned char tx_buffer[MTU]; +static unsigned char rx_buffer[MTU+4]; + +// ---------------------------------------------------------------------------- +// A utility buffer for messages. +#define MSG_SIZE 256 +static unsigned char msg[MSG_SIZE]; + +// Report an error to ecosynth during initialization. This means a +// single byte 0, followed by a string. +static void +report_error(char* msg) +{ + write(1, "0", 1); + write(1, msg, strlen(msg)); + close(1); + exit(0); +} + +// Report success to ecosynth. This means a byte 1 followed by +// the MAC address. +static void +report_success(void) +{ + write(1, "1", 1); + memcpy(msg, MAC, 6); + msg[6] = multicast_supported; + write(1, msg, 7); +} + + +// ---------------------------------------------------------------------------- +// Real ethernet. This involves creating a SOCK_RAW socket and binding it +// to the appropriate interface. Relevant documentation can be found in +// the man pages (packet(7) and netdevice(7)). + +// The device name. Needed for various ioctl()'s. +static char real_devname[IFNAMSIZ]; + +// The interface index. +static int real_ifindex = -1; + +// Transmit a single ethernet frame. The socket should be set up so a +// simple send() operation should do the trick. Errors such as EAGAIN, +// indicating that the network device is still busy, are ignored. +// Ethernet is not a reliable communication medium. +static void +real_handle_tx(unsigned char* buffer, int size) +{ + int result; + + result = send(ether_fd, buffer, size, MSG_DONTWAIT); + if (result < 0) { + // It appears that one retry is worthwhile, to clear pending + // errors or something. + result = send(ether_fd, buffer, size, MSG_DONTWAIT); + } +#if (DEBUG > 0) + fprintf(stderr, "rawether dbg: tx %d bytes -> %d\n", size, result); +#endif +#if (DEBUG > 1) + fprintf(stderr, " %x:%x:%x:%x:%x:%x %x:%x:%x:%x:%x:%x %x:%x\n", + buffer[0], buffer[1], buffer[2], buffer[3], buffer[4], buffer[5], + buffer[6], buffer[7], buffer[8], buffer[9], buffer[10], buffer[11], + buffer[12], buffer[13]); +#endif +} + +// Receive a single ethernet frame, using the static rxbuffer. If the +// interface is not currently up discard it. Otherwise forward it on +// to ecosynth. + +static void +real_handle_rx(void) +{ + int size; + int result; + + size = recv(ether_fd, rx_buffer + 4, MTU, MSG_TRUNC); + +#if (DEBUG > 0) + fprintf(stderr, "rawether dbg: rx returned %d, errno %s (%d)\n", size, (errno < sys_nerr) ? sys_errlist[errno] : "<unknown>", errno); +#endif + + if (size < 0) { + return; // Ignore errors, just go around the main loop again. + } + if ((size < 14) || (size > MTU)) { + return; // Invalid packet size. Discard the packet. + } + +#if (DEBUG > 1) + fprintf(stderr, " %x:%x:%x:%x:%x:%x %x:%x:%x:%x:%x:%x %x:%x\n", + rx_buffer[4], rx_buffer[5], rx_buffer[6], rx_buffer[7], rx_buffer[8], rx_buffer[9], + rx_buffer[10], rx_buffer[11], rx_buffer[12], rx_buffer[13], rx_buffer[14], rx_buffer[15], + rx_buffer[16], rx_buffer[17]); +#endif + + if (!up) { + // eCos is not currently expecting packets, so discard them. + // This may not actually be necessary because the interface + // is only up when eCos wants it to be up. + return; + } + + // It looks this packet should get forwarded to eCos. + rx_buffer[0] = SYNTH_ETH_RX; + rx_buffer[1] = 0; + rx_buffer[2] = size & 0x00FF; + rx_buffer[3] = (size >> 8) & 0x00FF; + do { + result = write(1, rx_buffer, 4 + size); + } while ((-1 == result) && (EINTR == errno)); + + if (result != (size + 4)) { + fprintf(stderr, "rawether(%s): failed to send ethernet packet to I/O auxiliary, exiting.\n", real_devname); + exit(1); + } +} + +// Utility to manipulate interface flags. This involves retrieving the +// current flags, or'ing in some bits, and'ing out others, and updating. +static void +real_update_ifflags(int set_bits, int clear_bits) +{ + struct ifreq request; + int flags; + + strncpy(request.ifr_name, real_devname, IFNAMSIZ); + if (ioctl(ether_fd, SIOCGIFFLAGS, &request) < 0) { + fprintf(stderr, "rawether (%s): failed to get interface flags, exiting\n", real_devname); + exit(1); + } + + flags = request.ifr_flags; + + flags |= set_bits; + flags &= ~clear_bits; + + if (flags == request.ifr_flags) { + // Nothing is changing. + return; + } + + strncpy(request.ifr_name, real_devname, IFNAMSIZ); + request.ifr_flags = flags; + if (ioctl(ether_fd, SIOCSIFFLAGS, &request) < 0) { + fprintf(stderr, "rawether (%s): failed to update interface flags, exiting\n", real_devname); + exit(1); + } +} + + +// Starting an interface. This involves bringing the interface up, +// and optionally setting promiscuous mode. +// NOTE: is UP really the right thing here? There is no IP address +// for this interface. In theory this should not matter because +// we have a bound socket which should receive all packets for +// this interface. + +static void +real_handle_start(int promiscuous) +{ + if (promiscuous) { + real_update_ifflags(IFF_UP | IFF_PROMISC, 0); + } else { + real_update_ifflags(IFF_UP, IFF_PROMISC); + } + up = 1; +} + +// Stopping an interface means clearing the UP flag +static void +real_handle_stop(void) +{ + up = 0; + real_update_ifflags(0, IFF_UP | IFF_PROMISC); +} + +// Enabling/disabling multicast support. +static void +real_handle_multiall(int on) +{ + struct packet_mreq req; + + req.mr_ifindex = real_ifindex; + req.mr_type = PACKET_MR_ALLMULTI; + req.mr_alen = 0; + if (setsockopt(ether_fd, SOL_PACKET, on ? PACKET_ADD_MEMBERSHIP : PACKET_DROP_MEMBERSHIP, (void*)&req, sizeof(req)) < 0) { + fprintf(stderr, "rawether (%s): failed to manipulate multicast-all flag, exiting\n", real_devname); + exit(1); + } +} + +// When the application exists make sure that the interface goes down again. + +static void +real_atexit(void) +{ + if (up) { + real_update_ifflags(0, IFF_UP | IFF_PROMISC); + } +} + +static void +real_init(char* devname) +{ + struct sockaddr_ll addr; + struct ifreq request; + + if (strlen(devname) >= IFNAMSIZ) { + snprintf(msg, MSG_SIZE, "Invalid real network device name \"%s\", too long.\n", devname); + report_error(msg); + } + strcpy(real_devname, devname); + + // All ioctl() operations need a socket. We might as well create the + // raw socket immediately and use that. + ether_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (ether_fd < 0) { + snprintf(msg, MSG_SIZE, "Unable to create a raw socket for accessing network device\n" + " Error %s (errno %d)\n", (errno < sys_nerr) ? sys_errlist[errno] : "unknown", errno); + report_error(msg); + } + + strncpy(request.ifr_name, real_devname, IFNAMSIZ); + if (ioctl(ether_fd, SIOCGIFINDEX, &request) < 0) { + snprintf(msg, MSG_SIZE, "Device %s does not correspond to a valid interface.\n" + " Error %s (errno %d)\n", real_devname, (errno < sys_nerr) ? sys_errlist[errno] : "unknown", errno); + report_error(msg); + } + real_ifindex = request.ifr_ifindex; + + // The interface exists. Now check that it is usable. + strncpy(request.ifr_name, real_devname, IFNAMSIZ); + if (ioctl(ether_fd, SIOCGIFFLAGS, &request) < 0) { + snprintf(msg, MSG_SIZE, "Failed to get current interface flags for %s\n" + " Error %s (errno %d)\n", real_devname, (errno < sys_nerr) ? sys_errlist[errno] : "unknown", errno); + report_error(msg); + } + + if (request.ifr_flags & (IFF_UP | IFF_RUNNING)) { + snprintf(msg, MSG_SIZE, "Network device %s is already up and running.\n" + " Exclusive access is required\n", real_devname); + report_error(msg); + } + if (request.ifr_flags & IFF_LOOPBACK) { + report_error("Loopback devices cannot be used for synthetic target ethernet emulation.\n"); + } + if (request.ifr_flags & IFF_POINTOPOINT) { + report_error("Point-to-point devices cannot be used for synthetic target ethernet emulation.\n"); + } + if (request.ifr_flags & IFF_MULTICAST) { + multicast_supported = 1; + } + + // Make sure the interface is down. There is no point in receiving packets just yet. + real_update_ifflags(0, IFF_UP | IFF_PROMISC); + + // The flags look ok. Now get hold of the hardware address. + strncpy(request.ifr_name, real_devname, IFNAMSIZ); + if (ioctl(ether_fd, SIOCGIFHWADDR, &request) < 0) { + snprintf(msg, MSG_SIZE, "Failed to get hardware address for %s\n" + " Error %s (errno %d)\n", real_devname, (errno < sys_nerr) ? sys_errlist[errno] : "unknown", errno); + report_error(msg); + } + if (ARPHRD_ETHER != request.ifr_hwaddr.sa_family) { + snprintf(msg, MSG_SIZE, "Device %s is not an ethernet device.\n", real_devname); + report_error(msg); + } + memcpy(MAC, request.ifr_hwaddr.sa_data, 6); + + // The device is useable. Now just bind the socket to the appropriate address. + addr.sll_family = AF_PACKET; + addr.sll_protocol = htons(ETH_P_ALL); + addr.sll_ifindex = real_ifindex; + if (bind(ether_fd, (struct sockaddr*) &addr, sizeof(addr)) < 0) { + snprintf(msg, MSG_SIZE, "Failed to bind socket for direct hardware address to %s\n" + " Error %s (errno %d)\n", real_devname, (errno < sys_nerr) ? sys_errlist[errno] : "unknown", errno); + report_error(msg); + } + + // Make sure the interface gets shut down when rawether exits. + atexit(real_atexit); + + // And that should be it. +} + +// ---------------------------------------------------------------------------- +// Ethertap device. +// +// See /usr/src/linux-2.x.y/Documentation/networking/tuntap.txt for more +// information on the tun/tap driver. +// +// Basically during initialization this code opens /dev/net/tun, then +// performs a TUNSETIFF ioctl() to initialize it. This causes a +// new network device tap?? to appear. Any ethernet frames written +// by the Linux kernel to this device can be read from the +// dev/net/tun file descriptor, and ethernet frames can be written to +// the same descriptor. The net effect is a virtual ethernet segment +// with one interface managed by the Linux kernel and another +// interface (or, theoretically, several) accessible via the file +// descriptor. +// +// The Linux kernel will invent a MAC address for its interface. An +// additional one is needed for eCos. This is either invented or +// specified in the target definition file. + +static void +tap_handle_tx(unsigned char* buffer, int size) +{ + int result; + + result = write(ether_fd, buffer, size); +#if (DEBUG > 0) + fprintf(stderr, "rawether dbg: tx %d bytes -> %d\n", size, result); +#endif +#if (DEBUG > 1) + fprintf(stderr, " %x:%x:%x:%x:%x:%x %x:%x:%x:%x:%x:%x %x:%x\n", + buffer[0], buffer[1], buffer[2], buffer[3], buffer[4], buffer[5], + buffer[6], buffer[7], buffer[8], buffer[9], buffer[10], buffer[11], + buffer[12], buffer[13]); +#endif +} + +// Receive a single packet from the socket. It is assumed that the +// tuntap code inside the kernel will preserve packet boundaries. +// +// For now it is assumed that all incoming packets are intended for +// eCos. That may not be accurate, and additional filtering in +// software might be appropriate. In promiscuous mode all packets +// should be accepted, obviously. Otherwise all broadcasts should +// be accepted, as should all messages intended for this specific +// interface's MAC address. Multicasts should be accepted only if +// enabled. +static void +tap_handle_rx(void) +{ + int size; + int result; + + // select() has succeeded so this read() should never block. + size = read(ether_fd, rx_buffer + 4, MTU); +#if (DEBUG > 0) + fprintf(stderr, "rawether dbg: rx returned %d, errno %s (%d)\n", size, (errno < sys_nerr) ? sys_errlist[errno] : "<unknown>", errno); +#endif + + if (size < 0) { + return; // Ignore errors, just go around the main loop again. + } + if ((size < 14) || (size > MTU)) { + return; // Invalid packet size. Discard the packet. + } + +#if (DEBUG > 1) + fprintf(stderr, " %x:%x:%x:%x:%x:%x %x:%x:%x:%x:%x:%x %x:%x\n", + rx_buffer[4], rx_buffer[5], rx_buffer[6], rx_buffer[7], rx_buffer[8], rx_buffer[9], + rx_buffer[10], rx_buffer[11], rx_buffer[12], rx_buffer[13], rx_buffer[14], rx_buffer[15], + rx_buffer[16], rx_buffer[17]); +#endif + + if (!up) { + // eCos is not currently expecting packets, so discard them. + return; + } + + // It looks this packet should get forwarded to eCos. + rx_buffer[0] = SYNTH_ETH_RX; + rx_buffer[1] = 0; + rx_buffer[2] = size & 0x00FF; + rx_buffer[3] = (size >> 8) & 0x00FF; + do { + result = write(1, rx_buffer, 4 + size); + } while ((-1 == result) && (EINTR == errno)); + + if (result != (size + 4)) { + fprintf(stderr, "rawether(%s): failed to send ethernet packet to I/O auxiliary, exiting.\n", real_devname); + exit(1); + } +} + +// Nothing much can be done for start or stop. Just set the flag and +// let the rx and tx code discard packets when appropriate. +// +// For now the device is implicitly promiscuous and accepts all +// multicasts. Given the nature of a tap device it is unlikely that +// any packets will arrive which are not destined here. +// FIXME: this may have to change if bridging is enabled. +static void +tap_handle_start(int promiscuous) +{ + up = 1; +} + +static void +tap_handle_stop(void) +{ + up = 0; +} + +static void +tap_handle_multiall(int on) +{ +} + +static void tap_init(int argc, char** argv) +{ + char* devname = NULL; + struct ifreq ifr; + + // Which device? By default let the system pick one, but the user + // can override this. + if (0 != argc) { + devname = argv[0]; + } + + // Work out the MAC address. By default a random one is generated, + // but the user can specify one to avoid a source of randomness. + // This MAC address is not actually needed by any of the code here, + // but should be returned to eCos. + if (2 == argc) { + unsigned int mac_data[6]; // sscanf() needs unsigned ints + int result = sscanf(argv[1], "%x:%x:%x:%x:%x:%x", + &(mac_data[0]), &(mac_data[1]), &(mac_data[2]), + &(mac_data[3]), &(mac_data[4]), &(mac_data[5])); + if (6 != result) { + snprintf(msg, MSG_SIZE, "Invalid MAC address %s\n", argv[1]); + report_error(msg); + } + MAC[0] = mac_data[0]; + MAC[1] = mac_data[1]; + MAC[2] = mac_data[2]; + MAC[3] = mac_data[3]; + MAC[4] = mac_data[4]; + MAC[5] = mac_data[5]; + } else { + srand(time(NULL)); + MAC[0] = 0; + MAC[1] = 0x0FF; + MAC[2] = rand() & 0x0FF; + MAC[3] = rand() & 0x0FF; + MAC[4] = rand() & 0x0FF; + MAC[5] = rand() & 0x0FF; + } + + ether_fd = open("/dev/net/tun", O_RDWR); + if (ether_fd < 0) { + snprintf(msg, MSG_SIZE, "Failed to open /dev/net/tun, errno %s (%d)\n", (errno < sys_nerr) ? sys_errlist[errno] : "<unknown>", errno); + report_error(msg); + } + + memset(&ifr, 0, sizeof(ifr)); + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; + if (NULL != devname) { + strncpy(ifr.ifr_name, devname, IFNAMSIZ - 1); + } + if (ioctl(ether_fd, TUNSETIFF, (void*)&ifr) < 0) { + snprintf(msg, MSG_SIZE, "Failed to initialize /dev/net/tun, errno %s (%d)\n", (errno < sys_nerr) ? sys_errlist[errno] : "<unknown>", errno); + report_error(msg); + } + + // Supporting multicasts is a no-op + multicast_supported = 1; + + // All done. +} + +// ---------------------------------------------------------------------------- +// Receive a single request from ecosynth. This consists of a four-byte +// header, optionally followed by a tx packet. EOF indicates that +// ecosynth has exited, so this process should just exit immediately +// as well. Any problems should be reported to stderr, followed by +// termination. +// +// Currently rawether is single-threaded. Theoretically this could +// cause a deadlock situation where the I/O auxiliary is trying to send +// rawether a request and is blocked on the write, while rawether is trying +// to send data to the I/O auxiliary. In practice the pipes should do +// enough buffering to avoid complications, especially since rawether +// gives priority to requests from the auxiliary. + +static void +handle_ecosynth_request(void) +{ + unsigned char req[4]; + int result; + int code, arg, size; + + result = read(0, req, 4); + if (result == 0) { + // select() succeeded but no data. EOF. So exit + exit(0); + } + if (result < 0) { + // EINTR? EAGAIN? The latter should not happen since the pipe + // has not been put into non-blocking mode. + if ((EINTR == errno) || (EAGAIN == errno)) { + return; + } else { + fprintf(stderr, "rawether: unexpected error reading request from ecosynth\n"); + if (errno < sys_nerr) { + fprintf(stderr, " %s\n", sys_errlist[errno]); + } + exit(1); + } + } + if (result < 4) { + fprintf(stderr, "rawether: unexpected error reading request from ecosynth\n Expected 4 bytes, only received %d\n", result); + exit(1); + } + + code = req[0]; + arg = req[1]; + size = req[2] + (req[3] << 8); + +#if (DEBUG > 1) + fprintf(stderr, "rawether dbg: request %x from auxiliary\n", code); +#endif + + switch(code) { + case SYNTH_ETH_TX: + { + if (size < 14) { + fprintf(stderr, "rawether: attempt to send invalid ethernet packet of only %d bytes\n" + "Ethernet packets should be at least 14 bytes.\n", size); + exit(1); + } + if (size > MTU) { + fprintf(stderr, "rawether: attempt to send invalid ethernet packet of %d bytes\n" + "Only packets of up to %d bytes are supported.\n", size, MTU); + exit(1); + } + do { + result = read(0, tx_buffer, size); + } while ((-1 == result) && (EINTR == errno)); + if (0 == result) { + // EOF, at an inopportune moment + exit(0); + } + if (result < size) { + fprintf(stderr, "rawether: error reading ethernet packet from I/O auxiliary\n" + "Expected %d bytes but only read %d\n", size, result); + exit(1); + } + + if (real_ether) { + real_handle_tx(tx_buffer, size); + } else if (ethertap) { + tap_handle_tx(tx_buffer, size); + } + break; + } + case SYNTH_ETH_START: + { + if (real_ether) { + real_handle_start(arg); + } else if (ethertap) { + tap_handle_start(arg); + } + break; + } + + case SYNTH_ETH_STOP: + { + if (real_ether) { + real_handle_stop(); + } else if (ethertap) { + tap_handle_stop(); + } + break; + } + + case SYNTH_ETH_MULTIALL: + { + if (real_ether) { + real_handle_multiall(arg); + } else if (ethertap) { + tap_handle_multiall(arg); + } + break; + } + + // SYNTH_ETH_RX and SYNTH_ETH_GETPARAMS are handled inside ethernet.tcl + + default: + fprintf(stderr, "rawether: protocol violation, received unknown request %d\n", code); + exit(1); + } +} + +// The main loop. This waits for an event either from ecosynth or from +// the underlying ethernet device, using select. Requests from +// ecosynth are handled, and take priority to prevent the connecting +// pipe from filling up and ecosynth blocking. Incoming ethernet +// frames are forwarded to ecosynth. + +static void +mainloop(void) +{ + fd_set read_set; + struct timeval timeout; + int result; + + for ( ; ; ) { + FD_ZERO(&read_set); + FD_SET(0, &read_set); + FD_SET(ether_fd, &read_set); + timeout.tv_sec = 24 * 60 * 60; + timeout.tv_usec = 0; + + result = select(ether_fd + 1, &read_set, NULL, NULL, &timeout); + if (result <= 0) { + continue; + } + + if (FD_ISSET(0, &read_set)) { + handle_ecosynth_request(); + } else if (FD_ISSET(ether_fd, &read_set)) { + if (real_ether) { + real_handle_rx(); + } else { + tap_handle_rx(); + } + } + } +} + +// ---------------------------------------------------------------------------- + +int +main(int argc, char**argv) +{ + // Ignore incoming ctrl-C's. We are in the same process group as the + // eCos application which may sensibly be ctrl-C'd, but that should + // result in the auxiliary detecting EOF and closing the pipe to + // this process, which in turn causes this process to exit completely. + signal(SIGINT, SIG_IGN); + + if (2 > argc ) { + report_error("Expected at least one argument, \"real\" or \"ethertap\"\n"); + } + if (0 == strcmp("real", argv[1])) { + real_ether = 1; + real_init(argv[2]); + } else if (0 == strcmp("ethertap", argv[1])) { + ethertap = 1; + tap_init(argc - 2, argv + 2); + } else { + snprintf(msg, MSG_SIZE, "Invalid argument %s, expected \"real\" or \"ethertap\"\n", argv[1]); + report_error(msg); + } + + // If the device-specific initialization succeeded we must be set. + report_success(); + + mainloop(); + + return 0; +} +
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/host/tonet.xbm @@ -0,0 +1,4 @@ +#define tonet_width 8 +#define tonet_height 8 +static unsigned char tonet_bits[] = { + 0x00, 0x87, 0x95, 0xa5, 0xfd, 0xa5, 0x95, 0x87};
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/src/protocol.h @@ -0,0 +1,72 @@ +#ifndef CYGONCE_DEVS_ETH_ECOSYNTH_PROTOCOL_H +#define CYGONCE_DEVS_ETH_ECOSYNTH_PROTOCOL_H + +//============================================================================= +// +// protocol.h +// +// Protocol between target-side and host-side ethernet support. +// +//============================================================================= +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting the +// copyright holder(s). +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//============================================================================= +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contributors:bartv +// Date: 2002-08-08 +// Purpose: Protocol definitions. +// Usage: #include "protocol.h" +// +//####DESCRIPTIONEND#### +// +//============================================================================= + +// Transmit: no arguments, up to 1514 bytes of outgoing data, no reply expected. +#define SYNTH_ETH_TX 0x01 +// Receive: no arguments or data, the return code indicates whether or not +// there are more packets to follow, and the return data is up to 1514 bytes. +#define SYNTH_ETH_RX 0x02 +// Start: one argument, non-zero -> promiscuous mode. No reply. +#define SYNTH_ETH_START 0x03 +// Stop: no arguments or reply. +#define SYNTH_ETH_STOP 0x04 +// Settings: no arguments or data. The return code holds the interrupt vector. +// The return data is six bytes of MAC address, plus a single byte indicating +// whether or not multicasting is supported. +#define SYNTH_ETH_GETPARAMS 0x05 +// Enable/disable multicasting. One argument, enable/disable. +#define SYNTH_ETH_MULTIALL 0x06 + +#endif // CYGONCE_DEVS_ETH_ECOSYNTH_PROTOCOL.H
new file mode 100644 --- /dev/null +++ b/packages/devs/eth/synth/ecosynth/current/src/syntheth.c @@ -0,0 +1,453 @@ +//========================================================================== +// +// syntheth.c +// +// Network device driver for the synthetic target +// +//========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting the +// copyright holder(s). +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contributors: bartv +// Date: 2002-08-07 +// +//####DESCRIPTIONEND#### +//========================================================================== + +#include <pkgconf/devs_eth_ecosynth.h> + +#include <cyg/infra/cyg_type.h> +#include <cyg/infra/cyg_ass.h> +#include <cyg/hal/hal_arch.h> +#include <cyg/infra/diag.h> +#include <cyg/hal/drv_api.h> + +#define __ECOS 1 +#include <sys/types.h> +#include <cyg/io/eth/netdev.h> +#include <cyg/io/eth/eth_drv.h> +#include <cyg/io/eth/eth_drv_stats.h> + +#ifdef CYGPKG_NET +# include <net/if.h> +#else +# define IFF_PROMISC 0 +#endif + +#include <cyg/hal/hal_io.h> +#include "protocol.h" + +// ---------------------------------------------------------------------------- +// Device instances. The synthetic target ethernet package can support +// up to four ethernet devices, eth0 to eth3. A synth_eth structure +// holds the data that is specific to a given device. Each device +// needs an instance of this structure, followed by ETH_DRV_SC and +// NETDEVTAB_ENTRY macros. Another macro SYNTH_ETH_INSTANCE takes +// care of all that, to avoid unnecessary duplication of code here. +// +// NOTE: unfortunately this involves duplicating the eth_hwr_funs +// structure. This could be eliminated but it would require bypassing +// the ETH_DRV_SC macro. + +#define ETHERNET_MINTU 14 +#define ETHERNET_MAXTU 1514 + + +typedef struct synth_eth { + int synth_id; // Device id within the auxiliary + int up; // Has there been a call to start()? + int in_send; // Detect recursive calls + int tx_done; + unsigned long tx_key; // Allow mbuf's to be freed + volatile int rx_pending; // There is pending data. + int rx_len; // Length of buffered data. + unsigned char MAC[6]; // Obtained from the underlying ethernet device + cyg_vector_t interrupt; // Interrupt number allocated by the auxiliary + int multi_supported; // Does the driver support multicasting? + cyg_handle_t interrupt_handle; // Allow the ISR and DSR to be installed. + cyg_interrupt interrupt_data; + unsigned char tx_data[ETHERNET_MAXTU]; + unsigned char rx_data[ETHERNET_MAXTU]; +} synth_eth; + +#define SYNTH_ETH_INSTANCE( _number_) \ +static synth_eth synth_eth##_number_ = { \ + synth_id: -1, \ + up: 1, \ + in_send: 0, \ + tx_done: 0, \ + tx_key: 0L, \ + rx_pending: 0, \ + rx_len: 0, \ + MAC: { 0, 0, 0, 0, 0, 0 }, \ + interrupt: 0, \ + interrupt_handle: 0 \ +}; \ +ETH_DRV_SC(synth_eth_sc##_number_, \ + (void*) &synth_eth##_number_, \ + "eth" #_number_, \ + synth_eth_start, \ + synth_eth_stop, \ + synth_eth_ioctl, \ + synth_eth_can_send, \ + synth_eth_send, \ + synth_eth_recv, \ + synth_eth_deliver, \ + synth_eth_poll, \ + synth_eth_intvector); \ +NETDEVTAB_ENTRY(synth_eth_netdev##_number_, \ + "synth_eth" #_number_, \ + synth_eth_init, \ + &synth_eth_sc##_number_); + +#ifdef CYGVAR_DEVS_ETH_ECOSYNTH_ETH0 +SYNTH_ETH_INSTANCE(0); +#endif +#ifdef CYGVAR_DEVS_ETH_ECOSYNTH_ETH1 +SYNTH_ETH_INSTANCE(1); +#endif +#ifdef CYGVAR_DEVS_ETH_ECOSYNTH_ETH2 +SYNTH_ETH_INSTANCE(2); +#endif +#ifdef CYGVAR_DEVS_ETH_ECOSYNTH_ETH3 +SYNTH_ETH_INSTANCE(3); +#endif + +// ---------------------------------------------------------------------------- +// Data transmits. +// +// The eCos application will just send the data to the auxiliary, +// which will in turn pass it on to the rawether utility. There is no +// need for any response. Flow control is implicit: if the eCos +// application tries to send ethernet packets too quickly then those +// get passed on to the auxiliary, which in turn will pass them on to +// the rawether process. If rawether is still busy with the previous +// packet then the auxiliary will block on a pipe write, and in turn +// the eCos application will block. As long as rawether manages to +// complete its operations reasonably quickly these blocks should not +// be noticeable to the user. +// +// So can_send() should always return true for an interface that is up +// and running. The send operation needs to take the sg list, turn it +// into a single buffer, and transmit it to the auxiliary. At that +// point the transmission is already complete so eth_drv_dsr() should +// be called to call deliver() and release the buffer. +// +// However there are some complications. The first is polled operation, +// where eth_drv_dsr() is a no-op and should not really be called at +// all because there are no interrupts going off. The second is that +// calling eth_drv_dsr() directly will cause recursive operation: +// send() -> dsr -> can_send()/send() -> ... +// This is a bad idea, so can_send() has to check that we are not +// already inside a send(). Data transmission will proceed merrily +// once the send has returned. + +static int +synth_eth_can_send(struct eth_drv_sc* sc) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + return synth_auxiliary_running && eth->up && !eth->in_send && !eth->tx_done; +} + +static void +synth_eth_send(struct eth_drv_sc* sc, + struct eth_drv_sg* sg_list, int sg_len, int total_len, + unsigned long key) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + + CYG_PRECONDITION((total_len >= ETHERNET_MINTU) && (total_len <= ETHERNET_MAXTU), "Only normal-sized ethernet packets are supported"); + CYG_PRECONDITION(!eth->in_send && !eth->tx_done, "Ethernet device must not still be in use for transmits"); + + eth->in_send = 1; + eth->tx_key = key; + if (synth_auxiliary_running && eth->up) { + int i; + unsigned char* buf = eth->tx_data; + for (i = 0; i < sg_len; i++) { + memcpy(buf, (void*) sg_list[i].buf, sg_list[i].len); + buf += sg_list[i].len; + CYG_LOOP_INVARIANT(buf <= &(eth->tx_data[ETHERNET_MAXTU]), "sg list must not exceed ethernet MTU"); + } + CYG_POSTCONDITION(buf == &(eth->tx_data[total_len]), "sg list lengths should match total_len"); + + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_TX, 0, 0, eth->tx_data, total_len, + (void*) 0, (unsigned char*)0, (int*)0, 0); + } + + // The transfer has now completed, one way or another, so inform + // the higher-level code immediately. + eth->tx_done = 1; + eth_drv_dsr(eth->interrupt, 0, (cyg_addrword_t) sc); + eth->in_send = 0; +} + +// ---------------------------------------------------------------------------- +// Receives. +// +// These are rather more complicated because there are real interrupts +// involved, and polling needs to be supported as well. The actual +// transfer of data from auxiliary to eCos happens inside deliver(), +// and the data is buffered up in the synth_eth structure. All that +// needs to be done here is scatter the existing data into the +// sg_list. If higher-level code has run out of space then the +// sg_list may contain null pointers. + +static void +synth_eth_recv(struct eth_drv_sc* sc, struct eth_drv_sg* sg_list, int sg_len) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + unsigned char* buf = eth->rx_data; + int len = eth->rx_len; + int i; + + for (i = 0; i < sg_len; i++) { + if (0 == sg_list[i].buf) { + break; + } else if (len <= sg_list[i].len) { + memcpy((void*)sg_list[i].buf, buf, len); + break; + } else { + memcpy((void*)sg_list[i].buf, buf, sg_list[i].len); + buf += sg_list[i].len; + len -= sg_list[i].len; + } + } +} + +// The ISR does not have to do anything, the DSR does the real work. +static cyg_uint32 +synth_eth_isr(cyg_vector_t vector, cyg_addrword_t data) +{ + cyg_drv_interrupt_acknowledge(vector); + return CYG_ISR_CALL_DSR; +} + +// The DSR also does not have to do very much. The data argument is +// actually the eth_drv_sc structure, which must match the vector. +// Interrupts only go off when there are pending receives, so set the +// rx_pending flag and call the generic DSR to do the real work. +static void +synth_eth_dsr(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data) +{ + struct eth_drv_sc* sc = (struct eth_drv_sc*) data; + synth_eth* eth = (synth_eth*)(sc->driver_private); + CYG_ASSERT(eth->interrupt == vector, "Interrupt vectors cannot change during a run"); + + eth->rx_pending = 1; + eth_drv_dsr(vector, count, data); +} + +// ---------------------------------------------------------------------------- +// Delivery. This is invoked by a thread inside the TCP/IP stack, or by +// the poll function. +static void +synth_eth_deliver(struct eth_drv_sc* sc) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + + if (eth->tx_done) { + eth->tx_done = 0; + (*sc->funs->eth_drv->tx_done)(sc, eth->tx_key, 1); + } + while (eth->rx_pending) { + int more = 1; + eth->rx_pending = 0; + + while (more && eth->up && synth_auxiliary_running) { + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_RX, 0, 0, (void*) 0, 0, + &more, eth->rx_data, &(eth->rx_len), ETHERNET_MAXTU); + CYG_LOOP_INVARIANT(!more || (0 != eth->rx_len), "Auxiliary must send at least one packet if several are available"); + if (eth->rx_len > 0) { + CYG_ASSERT((eth->rx_len >= ETHERNET_MINTU) && (eth->rx_len <= ETHERNET_MAXTU), "Only normal-sized ethernet packets are supported"); + // Inform higher-level code that data is available. + // This should result in a call to recv() with a + // suitable sg_list. If out of memory, recv() + // will see a null pointer. + (*sc->funs->eth_drv->recv)(sc, eth->rx_len); + } + }; + } +} + + +// ---------------------------------------------------------------------------- +// Polling support. Transmits are relatively straightforward because +// all the hard work is handled by send(). Receives are rather more +// complicated because interrupts are disabled so we never know when +// there is really pending data. However deliver() will do the right +// thing even if there is no data, so simply faking up an interrupt +// is enough. This does mean extra traffic between application and +// auxiliary, but polling does rather imply that. +static void +synth_eth_poll(struct eth_drv_sc* sc) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + if (synth_auxiliary_running && eth->up) { + eth->rx_pending = 1; + } + synth_eth_deliver(sc); +} + +static int +synth_eth_intvector(struct eth_drv_sc* sc) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + return eth->interrupt; +} + +// ---------------------------------------------------------------------------- +// ioctl()'s. +// +// SET_MAC_ADDRESS is not currently implemented, and probably should +// not be implemented because the underlying ethernet device may not +// support it. +// +// SET_MC_ALL is supported if the underlying hardware does. This is +// needed for IPV6 support. More selective multicasting via +// SET_MC_LIST is not supported, because it imposes too heavy a +// requirement on the underlying Linux device. SET_MC_LIST can be +// used to disable multicast support. +// +// GET_IF_STATS_UD and GET_IF_STATS are not currently implemented +static int +synth_eth_ioctl(struct eth_drv_sc* sc, unsigned long key, void* data, int data_length) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + int result = EINVAL; + + switch(key) { + case ETH_DRV_SET_MC_ALL: + { + if (eth->multi_supported) { + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_MULTIALL, 1, 0, (unsigned char*) 0, 0, + (void*)0, (unsigned char*)0, (int*)0, 0); + result = 0; + } + break; + } + case ETH_DRV_SET_MC_LIST: + { + struct eth_drv_mc_list* mcl = (struct eth_drv_mc_list*) data; + if (eth->multi_supported && (0 == mcl->len)) { + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_MULTIALL, 0, 0, (unsigned char*) 0, 0, + (void*)0, (unsigned char*)0, (int*)0, 0); + result = 0; + } + break; + } + default: + break; + } + + return result; +} + +// ---------------------------------------------------------------------------- +// Starting and stopping an interface. This includes restarting in +// promiscuous mode. +static void +synth_eth_start(struct eth_drv_sc* sc, unsigned char* enaddr, int flags) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + + eth->up = 0; + eth->rx_pending = 0; + + if ((-1 != eth->synth_id) && synth_auxiliary_running) { + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_START, flags & IFF_PROMISC, 0, (void*) 0, 0, + (int*)0, (void*) 0, (int*) 0, 0); + } + eth->up = 1; + if (enaddr != (unsigned char*)0) { + memcpy(enaddr, eth->MAC, 6); + } +} + +static void +synth_eth_stop(struct eth_drv_sc* sc) +{ + synth_eth* eth = (synth_eth*)(sc->driver_private); + + eth->up = 0; + if ((-1 != eth->synth_id) && synth_auxiliary_running) { + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_STOP, 0, 0, (void*) 0, 0, + (int*) 0, (void*) 0, (int*) 0, 0); + } + eth->rx_pending = 0; +} + + +// ---------------------------------------------------------------------------- +// Initialization. +// +// This requires instantiating a device of class ethernet with a specific +// device name held in the eth_drv_sc structure. No additional device data +// is needed. If a device can be instantiated then the interrupt vector +// and the MAC address can be obtained, and an interrupt handler can be +// installed. +static bool +synth_eth_init(struct cyg_netdevtab_entry* ndp) +{ + bool result = false; + struct eth_drv_sc* sc = (struct eth_drv_sc*)(ndp->device_instance); + struct synth_eth* eth = (struct synth_eth*)(sc->driver_private); + + if (synth_auxiliary_running) { + eth->synth_id = synth_auxiliary_instantiate("devs/eth/synth/ecosynth", SYNTH_MAKESTRING(CYGPKG_DEVS_ETH_ECOSYNTH), "ethernet", + sc->dev_name, (const char*) 0); + + if (-1 != eth->synth_id) { + unsigned char data[7]; + result = true; + synth_auxiliary_xchgmsg(eth->synth_id, SYNTH_ETH_GETPARAMS, 0, 0, (const unsigned char*) 0, 0, + &(eth->interrupt), data, 0, 7); + memcpy(eth->MAC, data, 6); + eth->multi_supported = data[6]; + cyg_drv_interrupt_create(eth->interrupt, + 0, + (CYG_ADDRWORD) sc, + &synth_eth_isr, + &synth_eth_dsr, + &(eth->interrupt_handle), + &(eth->interrupt_data)); + cyg_drv_interrupt_attach(eth->interrupt_handle); + cyg_drv_interrupt_unmask(eth->interrupt); + } + } + (*sc->funs->eth_drv->init)(sc, eth->MAC); + return result; +}
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/ChangeLog @@ -0,0 +1,36 @@ +2002-09-04 Bart Veer <bartv@ecoscentric.com> + + * Synthetic target watchdog package created + +//=========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//=========================================================================== +
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/cdl/synth_watchdog.cdl @@ -0,0 +1,108 @@ +# ==================================================================== +# +# synth_watchdog.cdl +# +# Synthetic target watchdog package. +# +# ==================================================================== +#####ECOSGPLCOPYRIGHTBEGIN#### +## ------------------------------------------- +## This file is part of eCos, the Embedded Configurable Operating System. +## Copyright (C) 2002 Bart Veer +## +## eCos is free software; you can redistribute it and/or modify it under +## the terms of the GNU General Public License as published by the Free +## Software Foundation; either version 2 or (at your option) any later version. +## +## eCos is distributed in the hope that it will be useful, but WITHOUT ANY +## WARRANTY; without even the implied warranty of MERCHANTABILITY or +## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +## for more details. +## +## You should have received a copy of the GNU General Public License along +## with eCos; if not, write to the Free Software Foundation, Inc., +## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +## +## As a special exception, if other files instantiate templates or use macros +## or inline functions from this file, or you compile this file and link it +## with other works to produce a work based on this file, this file does not +## by itself cause the resulting work to be covered by the GNU General Public +## License. However the source code for this file must still be made available +## in accordance with section (3) of the GNU General Public License. +## +## This exception does not invalidate any other reasons why a work based on +## this file might be covered by the GNU General Public License. +## +## Alternative licenses for eCos may be arranged by contacting the +## copyright holder(s). +## ------------------------------------------- +#####ECOSGPLCOPYRIGHTEND#### +# ==================================================================== +######DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Original data: bartv +# Contributors: +# Date: 2002-08-07 +# +#####DESCRIPTIONEND#### +# ==================================================================== + +cdl_package CYGPKG_DEVS_WATCHDOG_SYNTH { + display "Synthetic target watchdog support" + description " + The watchdog driver for the eCos synthetic target provides + emulation of a watchdog device: if the eCos application starts + the watchdog and fails to reset it regularly then the host-side + support will detect this and kill the eCos application with a + SIGPWR signal." + + parent CYGPKG_IO_WATCHDOG + implements CYGINT_WATCHDOG_HW_IMPLEMENTATIONS + implements CYGINT_WATCHDOG_RESETS_ON_TIMEOUT + + cdl_option CYGIMP_WATCHDOG_HARDWARE { + parent CYGPKG_IO_WATCHDOG_IMPLEMENTATION + display "use \"hardware\" watchdog" + default_value 1 + implements CYGINT_WATCHDOG_IMPLEMENTATIONS + compile synth_watchdog.cxx + description " + eCos provides several implementations of a watchdog device. + The default is to use the \"hardware\" implementation, which + for the synthetic target involves interacting with a + watchdog.tcl script running inside the I/O auxiliary." + } + + cdl_component CYGPKG_DEVS_WATCHDOG_SYNTH_OPTIONS { + display "Build options" + active_if CYGIMP_WATCHDOG_HARDWARE + flavor none + + description " + Package-specific build options including control over compiler + flags used only in building this package." + + cdl_option CYGPKG_DEVS_WATCHDOG_SYNTH_CFLAGS_ADD { + display "Additional compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building this package. These flags are used in addition + to the set of global flags." + } + cdl_option CYGPKG_DEVS_WATCHDOG_SYNTH_CFLAGS_REMOVE { + display "Suppressed compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building this package. These flags are removed from + the set of global flags if present." + } + } +} +
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new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/doc/devs-watchdog-synth.html @@ -0,0 +1,526 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Synthetic Target Watchdog Device</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><H1 +><A +NAME="DEVS-WATCHDOG-SYNTH">Synthetic Target Watchdog Device</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN4" +></A +><H2 +>Name</H2 +>Synthetic Target Watchdog Device -- Emulate watchdog hardware in the synthetic target</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="AEN7" +></A +><H2 +>Overview</H2 +><P +>Some target hardware comes equipped with a watchdog timer. Application +code can start this timer and after a certain period of time, +typically a second, the watchdog will trigger. Usually this causes the +hardware to reboot. The application can prevent this by regularly +resetting the watchdog. An automatic reboot can be very useful when +deploying hardware in the field: a hardware glitch could cause the +unit to hang; or the software could receive an unexpected sequence of +inputs, never seen in the laboratory, causing the system to lock up. +Often the hardware is still functional, and a reboot sorts out the +problem with only a brief interruption in service. + </P +><P +>The synthetic target watchdog package emulates watchdog hardware. +During system initialization watchdog device will be instantiated, +and the <TT +CLASS="FILENAME" +>watchdog.tcl</TT +> script will be loaded by the +I/O auxiliary. When the eCos application starts the watchdog device, +the <TT +CLASS="FILENAME" +>watchdog.tcl</TT +> script will start checking the +state of the eCos application at one second intervals. A watchdog +reset call simply involves a message to the I/O auxiliary. If the +<TT +CLASS="FILENAME" +>watchdog.tcl</TT +> script detects that a second has +<A +HREF="devs-watchdog-synth.html#SYNTH-WATCHDOG-WALLCLOCK-ELAPSED" +>elapsed</A +> +without a reset then it will send a <TT +CLASS="LITERAL" +>SIGPWR</TT +> signal +to the eCos application, causing the latter to terminate. If gdb is +being used to run the application, the user will get a chance to +investigate what is happening. This behaviour is different from real +hardware in that there is no automatic reboot, but the synthetic +target is used only for development purposes, not deployment in the +field: if a reboot is desired then this can be achieved very easily +by using gdb commands to run another instance of the application. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-WATCHDOG-SYNTH-INSTALL" +></A +><H2 +>Installation</H2 +><P +>Before a synthetic target eCos application can use a watchdog device +it is necessary to build and install host-side support. The relevant +code resides in the <TT +CLASS="FILENAME" +>host</TT +> +subdirectory of the synthetic target watchdog package, and building it +involves the standard <B +CLASS="COMMAND" +>configure</B +>, +<B +CLASS="COMMAND" +>make</B +> and <B +CLASS="COMMAND" +>make install</B +> steps. The +implementation of the watchdog support does not require any +executables, just a Tcl script <TT +CLASS="FILENAME" +>watchdog.tcl</TT +> and +some support files, so the <B +CLASS="COMMAND" +>make</B +> step is a no-op. + </P +><P +>There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the watchdog support, +in a single build tree. This involves using the +<B +CLASS="COMMAND" +>configure</B +> script at the toplevel of the eCos +repository. For more information on this, see the +<TT +CLASS="FILENAME" +>README.host</TT +> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target watchdog support then it will be necessary to +rerun the toplevel configure script: the search for appropriate +packages happens at configure time. + </P +><P +>The alternative is to build just the host-side for this package. +This requires a separate build directory, building directly in the +source tree is disallowed. The <B +CLASS="COMMAND" +>configure</B +> options +are much the same as for a build from the toplevel, and the +<TT +CLASS="FILENAME" +>README.host</TT +> file can be consulted for more +details. It is essential that the watchdog support be configured with +the same <TT +CLASS="OPTION" +>--prefix</TT +> option as other eCos host-side +software, especially the I/O auxiliary provided by the architectural +synthetic target HAL package, otherwise the I/O auxiliary will be +unable to locate the watchdog support. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-WATCHDOG-TARGET-CONFIG" +></A +><H2 +>Target-side +Configuration</H2 +><P +>The watchdog device depends on the generic watchdog support, +<TT +CLASS="VARNAME" +>CYGPKG_IO_WATCHDOG</TT +>: if the generic support is +absent then the watchdog device will be inactive. Some templates +include this generic package by default, but not all. If the +configuration does not include the generic package then it can be +added using the eCos configuration tools, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ ecosconfig add CYGPKG_IO_WATCHDOG</PRE +></TD +></TR +></TABLE +><P +>By default the configuration will use the hardware-specific support, +i.e. this package. However the generic watchdog package contains an +alternative implementation using the kernel alarm facility, and that +implementation can be selected if desired. However usually it will be +better to rely on an external watchdog facility as provided by the I/O +auxiliary and the <TT +CLASS="FILENAME" +>watchdog.tcl</TT +> script: if there +are serious problems within the application, for example memory +corruption, then an internal software-only implementation will not be +reliable. + </P +><P +>The watchdog resolution is currently fixed to one second: if the +device does not receive a reset signal at least once a second then +the watchdog will trigger and the eCos application will be terminated +with a <TT +CLASS="LITERAL" +>SIGPWR</TT +> signal. The current implementation +does not allow this resolution to be changed. + </P +><P +>On some targets the watchdog device does not perform a hard reset. +Instead the device works more or less via the interrupt subsystem, +allowing application code to install action routines that will be +called when the watchdog triggers. The synthetic target watchdog +support effectively does perform a hard reset, by sending a +<TT +CLASS="LITERAL" +>SIGPWR</TT +> signal to the eCos application, and there is +no support for action routines. + </P +><P +>The synthetic target watchdog package provides some configuration +options for manipulating the compiler flags used for building the +target-side code. That code is fairly simple, so for nearly all +applications the default flags will suffice. + </P +><P +>It should be noted that the watchdog device is subject to selective +linking. Unless some code explicitly references the device, for +example by calling the start and reset functions, the watchdog support +will not appear in the final executable. This is desirable because a +watchdog device has no effect until started. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-WATCHDOG-WALLCLOCK-ELAPSED" +></A +><H2 +>Wallclock versus Elapsed Time</H2 +><P +>On real hardware the watchdog device uses wallclock time: if the +device does not receive a reset signal within a set period of time +then the watchdog will trigger. When developing for the synthetic +target this is not always appropriate. There may be other processes +running, using up some or most of the cpu time. For example, the +application may be written such that it will issue a reset after some +calculations which are known to complete within half a second, well +within the one-second resolution of the watchdog device. However if +other Linux processes are running then the synthetic target +application may get timesliced, and half a second of computation may +take several seconds of wallclock time. + </P +><P +>Another problem with using wallclock time is that it interferes with +debugging: if the application hits a breakpoint then it is unlikely +that the user will manage to restart it in less than a second, and the +watchdog will not get reset in time. + </P +><P +>To avoid these problems the synthetic target watchdog normally uses +consumed cpu time rather than wallclock time. If the application is +timesliced or if it is halted inside gdb then it does not consume any +cpu time. The application actually has to spend a whole second's worth +of cpu cycles without issuing a reset before the watchdog triggers. + </P +><P +>However using consumed cpu time is not a perfect solution either. If +the application makes blocking system calls then it is not using cpu +time. Interaction with the I/O auxiliary involves system calls, but +these should take only a short amount of time so their effects can be +ignored. If the application makes direct system calls such as +<TT +CLASS="FUNCTION" +>cyg_hal_sys_read</TT +> then the system behaviour +becomes undefined. In addition by default the idle thread will make +blocking <TT +CLASS="FUNCTION" +>select</TT +> system calls, effectively waiting +until an interrupt occurs. If an application spends much of its time +idle then the watchdog device may take much longer to trigger than +expected. It may be desirable to enable the synthetic target HAL +configuration option <TT +CLASS="VARNAME" +>CYGIMP_HAL_IDLE_THREAD_SPIN</TT +>, +causing the idle thread to spin rather than block, at the cost of +wasted cpu cycles. + </P +><P +>The default is to use consumed cpu time, but this can be changed in +the target definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device watchdog { + use wallclock_time + … +}</PRE +></TD +></TR +></TABLE +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-WATCHDOG-GUI" +></A +><H2 +>User Interface</H2 +><P +>When the synthetic target is run in graphical mode the watchdog device +extends the user interface in two ways. The <SPAN +CLASS="GUIMENU" +>Help</SPAN +> +menu is extended with an entry for the watchdog-specific +documentation. There is also a graphical display of the current state +of the watchdog. Initially the watchdog is asleep: + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN60"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="asleep.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>When application code starts the device the watchdog will begin to +keep an eye on things (or occasionally both eyes). + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN65"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="awake.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>If the watchdog triggers the display will change again, and optionally +the user can receive an audible alert. The location of the watchdog +display within the I/O auxiliary's window can be controlled via +a <B +CLASS="COMMAND" +>watchdog_pack</B +> entry in the target definition +file. For example the following can be used to put the watchdog +display to the right of the central text window: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device watchdog { + watchdog_pack -in .main.e -side top + … +}</PRE +></TD +></TR +></TABLE +><P +>The user interface section of the generic synthetic target HAL +documentation can be consulted for more information on window packing. + </P +><P +>By default the watchdog support will not generate an audible alert +when the watchdog triggers, to avoid annoying colleagues. Sound can be +enabled in the target definition file, and two suitable files +<TT +CLASS="FILENAME" +>sound1.au</TT +> and <TT +CLASS="FILENAME" +>sound2.au</TT +> are +supplied as standard: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device watchdog { + sound sound1.au + … +}</PRE +></TD +></TR +></TABLE +><P +>An absolute path can be specified if desired: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device watchdog { + sound /usr/share/emacs/site-lisp/emacspeak/sounds/default-8k/alarm.au + … +}</PRE +></TD +></TR +></TABLE +><P +>Sound facilities are not built into the I/O auxiliary itself, instead +an external program is used. The default player is +<B +CLASS="COMMAND" +>play</B +>, a front-end to the +<SPAN +CLASS="APPLICATION" +>sox</SPAN +> application shipped with some Linux +distributions. If another player should be used then this can be +specified in the target definition file: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device watchdog { + … + sound_player my_sound_player</PRE +></TD +></TR +></TABLE +><P +>The specified program will be run in the background with a single +argument, the sound file. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-WATCHDOG-SYNTH-ARGS" +></A +><H2 +>Command Line Arguments</H2 +><P +>The watchdog support does not use any command line arguments. All +configuration is handled through the target definition file. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-WATCHDOG-SYNTH-HOOKS" +></A +><H2 +>Hooks</H2 +><P +>The watchdog support does not provide any hooks for use by other +scripts. There is rarely any need for customizing the system's +behaviour when a watchdog triggers because those should be rare +events, even during application development. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="DEVS-WATCHDOG-SYNTH-TCL" +></A +><H2 +>Additional Tcl Procedures</H2 +><P +>The watchdog support does not provide any additional Tcl procedures or +variables for use by other scripts. + </P +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/doc/makefile @@ -0,0 +1,34 @@ +#============================================================================= +# +# makefile +# +# For building the synthetic target watchdog package documentation +# +#============================================================================= +#####COPYRIGHTBEGIN#### +# +# =============================================================== +# Copyright (C) 2002 Bart Veer +# This material may be distributed only subject to the terms +# and conditions set forth in the Open Publication License, v1.0 +# or later (the latest version is presently available at +# http://www.opencontent.org/openpub/) +# =============================================================== +# +#####COPYRIGHTEND#### +#============================================================================= +#####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Date: 2002-09-09 +#####DESCRIPTIONEND#### +#============================================================================= + +TOPLEVEL := ../../../../.. +MAIN_SGML := synth_watchdog.sgml +MAIN_HTML := devs-watchdog-synth.html +MAIN_PDF := devs-watchdog-synth.pdf +OTHER_SGML := +PICTURES := + +include $(TOPLEVEL)/pkgconf/rules.doc
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/doc/synth_watchdog.sgml @@ -0,0 +1,336 @@ +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V3.1//EN"> + +<!-- {{{ Banner --> + +<!-- =============================================================== --> +<!-- --> +<!-- synth_watchdog.sgml --> +<!-- --> +<!-- Synthetic target watchdog device --> +<!-- --> +<!-- =============================================================== --> +<!-- ####COPYRIGHTBEGIN#### --> +<!-- --> +<!-- =============================================================== --> +<!-- Copyright (C) 2002 Bart Veer --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/) --> +<!-- =============================================================== --> +<!-- --> +<!-- ####COPYRIGHTEND#### --> +<!-- =============================================================== --> +<!-- #####DESCRIPTIONBEGIN#### --> +<!-- --> +<!-- Author(s): bartv --> +<!-- Contact(s): bartv --> +<!-- Date: 2002/09/09 --> +<!-- Version: 0.01 --> +<!-- --> +<!-- ####DESCRIPTIONEND#### --> +<!-- =============================================================== --> + +<!-- }}} --> + +<refentry id="devs-watchdog-synth"> + <refmeta> + <refentrytitle>Synthetic Target Watchdog Device</refentrytitle> + </refmeta> + <refnamediv> + <refname>Synthetic Target Watchdog Device</refname> + <refpurpose>Emulate watchdog hardware in the synthetic target</refpurpose> + </refnamediv> + + <refsect1><title>Overview</title> + <para> +Some target hardware comes equipped with a watchdog timer. Application +code can start this timer and after a certain period of time, +typically a second, the watchdog will trigger. Usually this causes the +hardware to reboot. The application can prevent this by regularly +resetting the watchdog. An automatic reboot can be very useful when +deploying hardware in the field: a hardware glitch could cause the +unit to hang; or the software could receive an unexpected sequence of +inputs, never seen in the laboratory, causing the system to lock up. +Often the hardware is still functional, and a reboot sorts out the +problem with only a brief interruption in service. + </para> + <para> +The synthetic target watchdog package emulates watchdog hardware. +During system initialization watchdog device will be instantiated, +and the <filename>watchdog.tcl</filename> script will be loaded by the +I/O auxiliary. When the eCos application starts the watchdog device, +the <filename>watchdog.tcl</filename> script will start checking the +state of the eCos application at one second intervals. A watchdog +reset call simply involves a message to the I/O auxiliary. If the +<filename>watchdog.tcl</filename> script detects that a second has +<link linkend="synth-watchdog-wallclock-elapsed">elapsed</link> +without a reset then it will send a <literal>SIGPWR</literal> signal +to the eCos application, causing the latter to terminate. If gdb is +being used to run the application, the user will get a chance to +investigate what is happening. This behaviour is different from real +hardware in that there is no automatic reboot, but the synthetic +target is used only for development purposes, not deployment in the +field: if a reboot is desired then this can be achieved very easily +by using gdb commands to run another instance of the application. + </para> + </refsect1> + + <refsect1 id="devs-watchdog-synth-install"><title>Installation</title> + <para> +Before a synthetic target eCos application can use a watchdog device +it is necessary to build and install host-side support. The relevant +code resides in the <filename class="directory">host</filename> +subdirectory of the synthetic target watchdog package, and building it +involves the standard <command>configure</command>, +<command>make</command> and <command>make install</command> steps. The +implementation of the watchdog support does not require any +executables, just a Tcl script <filename>watchdog.tcl</filename> and +some support files, so the <command>make</command> step is a no-op. + </para> + <para> +There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the watchdog support, +in a single build tree. This involves using the +<command>configure</command> script at the toplevel of the eCos +repository. For more information on this, see the +<filename>README.host</filename> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target watchdog support then it will be necessary to +rerun the toplevel configure script: the search for appropriate +packages happens at configure time. + </para> + <para> +The alternative is to build just the host-side for this package. +This requires a separate build directory, building directly in the +source tree is disallowed. The <command>configure</command> options +are much the same as for a build from the toplevel, and the +<filename>README.host</filename> file can be consulted for more +details. It is essential that the watchdog support be configured with +the same <option>--prefix</option> option as other eCos host-side +software, especially the I/O auxiliary provided by the architectural +synthetic target HAL package, otherwise the I/O auxiliary will be +unable to locate the watchdog support. + </para> + </refsect1> + + <refsect1 id="synth-watchdog-target-config"><title>Target-side +Configuration</title> + <para> +The watchdog device depends on the generic watchdog support, +<varname>CYGPKG_IO_WATCHDOG</varname>: if the generic support is +absent then the watchdog device will be inactive. Some templates +include this generic package by default, but not all. If the +configuration does not include the generic package then it can be +added using the eCos configuration tools, for example: + </para> + <screen> +$ ecosconfig add CYGPKG_IO_WATCHDOG +</screen> + <para> +By default the configuration will use the hardware-specific support, +i.e. this package. However the generic watchdog package contains an +alternative implementation using the kernel alarm facility, and that +implementation can be selected if desired. However usually it will be +better to rely on an external watchdog facility as provided by the I/O +auxiliary and the <filename>watchdog.tcl</filename> script: if there +are serious problems within the application, for example memory +corruption, then an internal software-only implementation will not be +reliable. + </para> + <para> +The watchdog resolution is currently fixed to one second: if the +device does not receive a reset signal at least once a second then +the watchdog will trigger and the eCos application will be terminated +with a <literal>SIGPWR</literal> signal. The current implementation +does not allow this resolution to be changed. + </para> + <para> +On some targets the watchdog device does not perform a hard reset. +Instead the device works more or less via the interrupt subsystem, +allowing application code to install action routines that will be +called when the watchdog triggers. The synthetic target watchdog +support effectively does perform a hard reset, by sending a +<literal>SIGPWR</literal> signal to the eCos application, and there is +no support for action routines. + </para> + <para> +The synthetic target watchdog package provides some configuration +options for manipulating the compiler flags used for building the +target-side code. That code is fairly simple, so for nearly all +applications the default flags will suffice. + </para> + <para> +It should be noted that the watchdog device is subject to selective +linking. Unless some code explicitly references the device, for +example by calling the start and reset functions, the watchdog support +will not appear in the final executable. This is desirable because a +watchdog device has no effect until started. + </para> + </refsect1> + + <refsect1 id="synth-watchdog-wallclock-elapsed"><title>Wallclock versus Elapsed Time</title> + <para> +On real hardware the watchdog device uses wallclock time: if the +device does not receive a reset signal within a set period of time +then the watchdog will trigger. When developing for the synthetic +target this is not always appropriate. There may be other processes +running, using up some or most of the cpu time. For example, the +application may be written such that it will issue a reset after some +calculations which are known to complete within half a second, well +within the one-second resolution of the watchdog device. However if +other Linux processes are running then the synthetic target +application may get timesliced, and half a second of computation may +take several seconds of wallclock time. + </para> + <para> +Another problem with using wallclock time is that it interferes with +debugging: if the application hits a breakpoint then it is unlikely +that the user will manage to restart it in less than a second, and the +watchdog will not get reset in time. + </para> + <para> +To avoid these problems the synthetic target watchdog normally uses +consumed cpu time rather than wallclock time. If the application is +timesliced or if it is halted inside gdb then it does not consume any +cpu time. The application actually has to spend a whole second's worth +of cpu cycles without issuing a reset before the watchdog triggers. + </para> + <para> +However using consumed cpu time is not a perfect solution either. If +the application makes blocking system calls then it is not using cpu +time. Interaction with the I/O auxiliary involves system calls, but +these should take only a short amount of time so their effects can be +ignored. If the application makes direct system calls such as +<function>cyg_hal_sys_read</function> then the system behaviour +becomes undefined. In addition by default the idle thread will make +blocking <function>select</function> system calls, effectively waiting +until an interrupt occurs. If an application spends much of its time +idle then the watchdog device may take much longer to trigger than +expected. It may be desirable to enable the synthetic target HAL +configuration option <varname>CYGIMP_HAL_IDLE_THREAD_SPIN</varname>, +causing the idle thread to spin rather than block, at the cost of +wasted cpu cycles. + </para> + <para> +The default is to use consumed cpu time, but this can be changed in +the target definition file: + </para> + <programlisting> +synth_device watchdog { + use wallclock_time + … +} +</programlisting> + </refsect1> + + <refsect1 id="synth-watchdog-gui"><title>User Interface</title> + <para> +When the synthetic target is run in graphical mode the watchdog device +extends the user interface in two ways. The <guimenu>Help</guimenu> +menu is extended with an entry for the watchdog-specific +documentation. There is also a graphical display of the current state +of the watchdog. Initially the watchdog is asleep: + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="asleep.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +When application code starts the device the watchdog will begin to +keep an eye on things (or occasionally both eyes). + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="awake.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +If the watchdog triggers the display will change again, and optionally +the user can receive an audible alert. The location of the watchdog +display within the I/O auxiliary's window can be controlled via +a <command>watchdog_pack</command> entry in the target definition +file. For example the following can be used to put the watchdog +display to the right of the central text window: + </para> + <programlisting> +synth_device watchdog { + watchdog_pack -in .main.e -side top + … +} +</programlisting> + <para> +The user interface section of the generic synthetic target HAL +documentation can be consulted for more information on window packing. + </para> + <para> +By default the watchdog support will not generate an audible alert +when the watchdog triggers, to avoid annoying colleagues. Sound can be +enabled in the target definition file, and two suitable files +<filename>sound1.au</filename> and <filename>sound2.au</filename> are +supplied as standard: + </para> + <programlisting> +synth_device watchdog { + sound sound1.au + … +} +</programlisting> + <para> +An absolute path can be specified if desired: + </para> + <programlisting> +synth_device watchdog { + sound /usr/share/emacs/site-lisp/emacspeak/sounds/default-8k/alarm.au + … +} +</programlisting> + <para> +Sound facilities are not built into the I/O auxiliary itself, instead +an external program is used. The default player is +<command>play</command>, a front-end to the +<application>sox</application> application shipped with some Linux +distributions. If another player should be used then this can be +specified in the target definition file: + </para> + <programlisting> +synth_device watchdog { + … + sound_player my_sound_player +</programlisting> + <para> +The specified program will be run in the background with a single +argument, the sound file. + </para> + </refsect1> + + <refsect1 id="devs-watchdog-synth-args"><title>Command Line Arguments</title> + <para> +The watchdog support does not use any command line arguments. All +configuration is handled through the target definition file. + </para> + </refsect1> + + <refsect1 id="devs-watchdog-synth-hooks"><title>Hooks</title> + <para> +The watchdog support does not provide any hooks for use by other +scripts. There is rarely any need for customizing the system's +behaviour when a watchdog triggers because those should be rare +events, even during application development. + </para> + </refsect1> + + <refsect1 id="devs-watchdog-synth-tcl"><title>Additional Tcl Procedures</title> + <para> +The watchdog support does not provide any additional Tcl procedures or +variables for use by other scripts. + </para> + </refsect1> + +</refentry>
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/Makefile.am @@ -0,0 +1,61 @@ +## Process this file with automake to produce Makefile.in +## ===================================================================== +## +## Makefile.am +## +## Build support for the host-side synthetic target support, +## the watchdog package +## +## ===================================================================== +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target ethernet support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +## ===================================================================== +#######DESCRIPTIONBEGIN#### +## +## Author(s): bartv +## Contact(s): bartv +## Date: 2002/09/04 +## Version: 0.01 +## +######DESCRIPTIONEND#### +## ===================================================================== + +AUTOMAKE_OPTIONS = 1.3 foreign + +## Only some platforms are supported. Having the configure script throw +## an error when attempting to configure on an unsupported platform +## would be a mistake, since that would prevent any configury from +## the toplevel on unsupported platforms. Instead an automake conditional +## is used, leading to null makefiles on unsupported platforms. + +if SUPPORTED + +## The only thing that needs to be installed is a Tcl script and some +## data files. +watchdogdir = $(libexecdir)/ecos/@PACKAGE_INSTALL@ +watchdog_DATA = watchdog.tcl \ + watchdog.tdf \ + alarm.gif doghouse.gif eye.gif asleep.gif \ + sound1.au sound2.au +endif
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/Makefile.in @@ -0,0 +1,288 @@ +# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am + +# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target ethernet support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +#######DESCRIPTIONBEGIN#### +######DESCRIPTIONEND#### + + +SHELL = @SHELL@ + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +bindir = @bindir@ +sbindir = @sbindir@ +libexecdir = @libexecdir@ +datadir = @datadir@ +sysconfdir = @sysconfdir@ +sharedstatedir = @sharedstatedir@ +localstatedir = @localstatedir@ +libdir = @libdir@ +infodir = @infodir@ +mandir = @mandir@ +includedir = @includedir@ +oldincludedir = /usr/include + +DESTDIR = + +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ + +top_builddir = . + +ACLOCAL = @ACLOCAL@ +AUTOCONF = @AUTOCONF@ +AUTOMAKE = @AUTOMAKE@ +AUTOHEADER = @AUTOHEADER@ + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS) +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +transform = @program_transform_name@ + +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +host_alias = @host_alias@ +host_triplet = @host@ +CC = @CC@ +CXX = @CXX@ +ECOS_REPOSITORY = @ECOS_REPOSITORY@ +MAINT = @MAINT@ +MAKEINFO = @MAKEINFO@ +MSVC_SRCDIR = @MSVC_SRCDIR@ +PACKAGE = @PACKAGE@ +PACKAGE_DIR = @PACKAGE_DIR@ +PACKAGE_INSTALL = @PACKAGE_INSTALL@ +PACKAGE_VERSION = @PACKAGE_VERSION@ +VERSION = @VERSION@ +ecos_CFLAGS = @ecos_CFLAGS@ +ecos_CXXFLAGS = @ecos_CXXFLAGS@ +ecos_INCLUDES = @ecos_INCLUDES@ +ecos_LDADD = @ecos_LDADD@ +ecos_LIBS = @ecos_LIBS@ +ecos_infra_incdir = @ecos_infra_incdir@ +ecos_infra_libdir = @ecos_infra_libdir@ +ecos_libcdl_incdir = @ecos_libcdl_incdir@ +ecos_libcdl_libdir = @ecos_libcdl_libdir@ +ecos_tk_libs = @ecos_tk_libs@ + +AUTOMAKE_OPTIONS = 1.3 foreign + +@SUPPORTED_TRUE@watchdogdir = @SUPPORTED_TRUE@$(libexecdir)/ecos/@PACKAGE_INSTALL@ +@SUPPORTED_TRUE@watchdog_DATA = @SUPPORTED_TRUE@watchdog.tcl \ +@SUPPORTED_TRUE@ watchdog.tdf \ +@SUPPORTED_TRUE@ alarm.gif doghouse.gif eye.gif asleep.gif \ +@SUPPORTED_TRUE@ sound1.au sound2.au +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +mkinstalldirs = $(SHELL) $(top_srcdir)/../../../../../../acsupport/mkinstalldirs +CONFIG_CLEAN_FILES = +DATA = $(watchdog_DATA) + +DIST_COMMON = Makefile.am Makefile.in acinclude.m4 aclocal.m4 configure \ +configure.in + + +DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST) + +TAR = gtar +GZIP_ENV = --best +all: all-redirect +.SUFFIXES: +$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) + cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile + +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(BUILT_SOURCES) + cd $(top_builddir) \ + && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status + +$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ configure.in acinclude.m4 + cd $(srcdir) && $(ACLOCAL) + +config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) + $(SHELL) ./config.status --recheck +$(srcdir)/configure: @MAINTAINER_MODE_TRUE@$(srcdir)/configure.in $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES) + cd $(srcdir) && $(AUTOCONF) + +install-watchdogDATA: $(watchdog_DATA) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(watchdogdir) + @list='$(watchdog_DATA)'; for p in $$list; do \ + if test -f $(srcdir)/$$p; then \ + echo " $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(watchdogdir)/$$p"; \ + $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(watchdogdir)/$$p; \ + else if test -f $$p; then \ + echo " $(INSTALL_DATA) $$p $(DESTDIR)$(watchdogdir)/$$p"; \ + $(INSTALL_DATA) $$p $(DESTDIR)$(watchdogdir)/$$p; \ + fi; fi; \ + done + +uninstall-watchdogDATA: + @$(NORMAL_UNINSTALL) + list='$(watchdog_DATA)'; for p in $$list; do \ + rm -f $(DESTDIR)$(watchdogdir)/$$p; \ + done +tags: TAGS +TAGS: + + +distdir = $(PACKAGE)-$(VERSION) +top_distdir = $(distdir) + +# This target untars the dist file and tries a VPATH configuration. Then +# it guarantees that the distribution is self-contained by making another +# tarfile. +distcheck: dist + -rm -rf $(distdir) + GZIP=$(GZIP_ENV) $(TAR) zxf $(distdir).tar.gz + mkdir $(distdir)/=build + mkdir $(distdir)/=inst + dc_install_base=`cd $(distdir)/=inst && pwd`; \ + cd $(distdir)/=build \ + && ../configure --srcdir=.. --prefix=$$dc_install_base \ + && $(MAKE) $(AM_MAKEFLAGS) \ + && $(MAKE) $(AM_MAKEFLAGS) dvi \ + && $(MAKE) $(AM_MAKEFLAGS) check \ + && $(MAKE) $(AM_MAKEFLAGS) install \ + && $(MAKE) $(AM_MAKEFLAGS) installcheck \ + && $(MAKE) $(AM_MAKEFLAGS) dist + -rm -rf $(distdir) + @banner="$(distdir).tar.gz is ready for distribution"; \ + dashes=`echo "$$banner" | sed s/./=/g`; \ + echo "$$dashes"; \ + echo "$$banner"; \ + echo "$$dashes" +dist: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +dist-all: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +distdir: $(DISTFILES) + -rm -rf $(distdir) + mkdir $(distdir) + -chmod 777 $(distdir) + here=`cd $(top_builddir) && pwd`; \ + top_distdir=`cd $(distdir) && pwd`; \ + distdir=`cd $(distdir) && pwd`; \ + cd $(top_srcdir) \ + && $(AUTOMAKE) --include-deps --build-dir=$$here --srcdir-name=$(top_srcdir) --output-dir=$$top_distdir --foreign Makefile + @for file in $(DISTFILES); do \ + d=$(srcdir); \ + if test -d $$d/$$file; then \ + cp -pr $$d/$$file $(distdir)/$$file; \ + else \ + test -f $(distdir)/$$file \ + || ln $$d/$$file $(distdir)/$$file 2> /dev/null \ + || cp -p $$d/$$file $(distdir)/$$file || :; \ + fi; \ + done +info-am: +info: info-am +dvi-am: +dvi: dvi-am +check-am: all-am +check: check-am +installcheck-am: +installcheck: installcheck-am +install-exec-am: +install-exec: install-exec-am + +install-data-am: install-watchdogDATA +install-data: install-data-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am +install: install-am +uninstall-am: uninstall-watchdogDATA +uninstall: uninstall-am +all-am: Makefile $(DATA) +all-redirect: all-am +install-strip: + $(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install +installdirs: + $(mkinstalldirs) $(DESTDIR)$(watchdogdir) + + +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -rm -f Makefile $(CONFIG_CLEAN_FILES) + -rm -f config.cache config.log stamp-h stamp-h[0-9]* + +maintainer-clean-generic: +mostlyclean-am: mostlyclean-generic + +mostlyclean: mostlyclean-am + +clean-am: clean-generic mostlyclean-am + +clean: clean-am + +distclean-am: distclean-generic clean-am + +distclean: distclean-am + -rm -f config.status + +maintainer-clean-am: maintainer-clean-generic distclean-am + @echo "This command is intended for maintainers to use;" + @echo "it deletes files that may require special tools to rebuild." + +maintainer-clean: maintainer-clean-am + -rm -f config.status + +.PHONY: uninstall-watchdogDATA install-watchdogDATA tags distdir info-am \ +info dvi-am dvi check check-am installcheck-am installcheck \ +install-exec-am install-exec install-data-am install-data install-am \ +install uninstall-am uninstall all-redirect all-am all installdirs \ +mostlyclean-generic distclean-generic clean-generic \ +maintainer-clean-generic clean mostlyclean distclean maintainer-clean + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT:
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/acinclude.m4 @@ -0,0 +1,45 @@ +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/09/04 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../acsupport/acinclude.m4)
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/aclocal.m4 @@ -0,0 +1,183 @@ +dnl aclocal.m4 generated automatically by aclocal 1.4-p5 + +dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without +dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A +dnl PARTICULAR PURPOSE. + +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/09/04 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../acsupport/acinclude.m4) + +# Define a conditional. + +AC_DEFUN([AM_CONDITIONAL], +[AC_SUBST($1_TRUE) +AC_SUBST($1_FALSE) +if $2; then + $1_TRUE= + $1_FALSE='#' +else + $1_TRUE='#' + $1_FALSE= +fi]) + +# Do all the work for Automake. This macro actually does too much -- +# some checks are only needed if your package does certain things. +# But this isn't really a big deal. + +# serial 1 + +dnl Usage: +dnl AM_INIT_AUTOMAKE(package,version, [no-define]) + +AC_DEFUN([AM_INIT_AUTOMAKE], +[AC_REQUIRE([AC_PROG_INSTALL]) +PACKAGE=[$1] +AC_SUBST(PACKAGE) +VERSION=[$2] +AC_SUBST(VERSION) +dnl test to see if srcdir already configured +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + AC_MSG_ERROR([source directory already configured; run "make distclean" there first]) +fi +ifelse([$3],, +AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package]) +AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])) +AC_REQUIRE([AM_SANITY_CHECK]) +AC_REQUIRE([AC_ARG_PROGRAM]) +dnl FIXME This is truly gross. +missing_dir=`cd $ac_aux_dir && pwd` +AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir) +AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir) +AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir) +AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir) +AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir) +AC_REQUIRE([AC_PROG_MAKE_SET])]) + +# +# Check to make sure that the build environment is sane. +# + +AC_DEFUN([AM_SANITY_CHECK], +[AC_MSG_CHECKING([whether build environment is sane]) +# Just in case +sleep 1 +echo timestamp > conftestfile +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "[$]*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "[$]*" != "X $srcdir/configure conftestfile" \ + && test "[$]*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken +alias in your environment]) + fi + + test "[$]2" = conftestfile + ) +then + # Ok. + : +else + AC_MSG_ERROR([newly created file is older than distributed files! +Check your system clock]) +fi +rm -f conftest* +AC_MSG_RESULT(yes)]) + +dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY) +dnl The program must properly implement --version. +AC_DEFUN([AM_MISSING_PROG], +[AC_MSG_CHECKING(for working $2) +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. 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then + echo "configure: warning: $ac_option: invalid host type" 1>&2 + fi + if test "x$nonopt" != xNONE; then + { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; } + fi + nonopt="$ac_option" + ;; + + esac +done + +if test -n "$ac_prev"; then + { echo "configure: error: missing argument to --`echo $ac_prev | sed 's/_/-/g'`" 1>&2; exit 1; } +fi + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +# File descriptor usage: +# 0 standard input +# 1 file creation +# 2 errors and warnings +# 3 some systems may open it to /dev/tty +# 4 used on the Kubota Titan +# 6 checking for... messages and results +# 5 compiler messages saved in config.log +if test "$silent" = yes; then + exec 6>/dev/null +else + exec 6>&1 +fi +exec 5>./config.log + +echo "\ +This file contains any messages produced by compilers while +running configure, to aid debugging if configure makes a mistake. +" 1>&5 + +# Strip out --no-create and --no-recursion so they do not pile up. +# Also quote any args containing shell metacharacters. +ac_configure_args= +for ac_arg +do + case "$ac_arg" in + -no-create | --no-create | --no-creat | --no-crea | --no-cre \ + | --no-cr | --no-c) ;; + -no-recursion | --no-recursion | --no-recursio | --no-recursi \ + | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;; + *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*) + ac_configure_args="$ac_configure_args '$ac_arg'" ;; + *) ac_configure_args="$ac_configure_args $ac_arg" ;; + esac +done + +# NLS nuisances. +# Only set these to C if already set. These must not be set unconditionally +# because not all systems understand e.g. LANG=C (notably SCO). +# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'! +# Non-C LC_CTYPE values break the ctype check. +if test "${LANG+set}" = set; then LANG=C; export LANG; fi +if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi +if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi +if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi + +# confdefs.h avoids OS command line length limits that DEFS can exceed. +rm -rf conftest* confdefs.h +# AIX cpp loses on an empty file, so make sure it contains at least a newline. +echo > confdefs.h + +# A filename unique to this package, relative to the directory that +# configure is in, which we can look for to find out if srcdir is correct. +ac_unique_file=watchdog.tcl + +# Find the source files, if location was not specified. +if test -z "$srcdir"; then + ac_srcdir_defaulted=yes + # Try the directory containing this script, then its parent. + ac_prog=$0 + ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'` + test "x$ac_confdir" = "x$ac_prog" && ac_confdir=. + srcdir=$ac_confdir + if test ! -r $srcdir/$ac_unique_file; then + srcdir=.. + fi +else + ac_srcdir_defaulted=no +fi +if test ! -r $srcdir/$ac_unique_file; then + if test "$ac_srcdir_defaulted" = yes; then + { echo "configure: error: can not find sources in $ac_confdir or .." 1>&2; exit 1; } + else + { echo "configure: error: can not find sources in $srcdir" 1>&2; exit 1; } + fi +fi +srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'` + +# Prefer explicitly selected file to automatically selected ones. +if test -z "$CONFIG_SITE"; then + if test "x$prefix" != xNONE; then + CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site" + else + CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site" + fi +fi +for ac_site_file in $CONFIG_SITE; do + if test -r "$ac_site_file"; then + echo "loading site script $ac_site_file" + . "$ac_site_file" + fi +done + +if test -r "$cache_file"; then + echo "loading cache $cache_file" + . $cache_file +else + echo "creating cache $cache_file" + > $cache_file +fi + +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +ac_exeext= +ac_objext=o +if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then + # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu. + if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then + ac_n= ac_c=' +' ac_t=' ' + else + ac_n=-n ac_c= ac_t= + fi +else + ac_n= ac_c='\c' ac_t= +fi + + + +ac_aux_dir= +for ac_dir in ../../../../../../acsupport $srcdir/../../../../../../acsupport; do + if test -f $ac_dir/install-sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install-sh -c" + break + elif test -f $ac_dir/install.sh; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install.sh -c" + break + fi +done +if test -z "$ac_aux_dir"; then + { echo "configure: error: can not find install-sh or install.sh in ../../../../../../acsupport $srcdir/../../../../../../acsupport" 1>&2; exit 1; } +fi +ac_config_guess=$ac_aux_dir/config.guess +ac_config_sub=$ac_aux_dir/config.sub +ac_configure=$ac_aux_dir/configure # This should be Cygnus configure. + + + + echo $ac_n "checking that a separate build tree is being used""... $ac_c" 1>&6 +echo "configure:551: checking that a separate build tree is being used" >&5 + ecos_cwd=`/bin/pwd` + if test "${srcdir}" = "." ; then + srcdir=${ecos_cwd} + fi + if test "${ecos_cwd}" = "${srcdir}" ; then + echo "$ac_t""no" 1>&6 + { echo "configure: error: This configure script should not be run inside the source tree. Instead please use a separate build tree" 1>&2; exit 1; } + else + echo "$ac_t""yes" 1>&6 + fi + + +# Make sure we can run config.sub. +if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then : +else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } +fi + +echo $ac_n "checking host system type""... $ac_c" 1>&6 +echo "configure:570: checking host system type" >&5 + +host_alias=$host +case "$host_alias" in +NONE) + case $nonopt in + NONE) + if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then : + else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; } + fi ;; + *) host_alias=$nonopt ;; + esac ;; +esac + +host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias` +host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` +host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` +host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +echo "$ac_t""$host" 1>&6 + +# Find a good install program. We prefer a C program (faster), +# so one script is as good as another. But avoid the broken or +# incompatible versions: +# SysV /etc/install, /usr/sbin/install +# SunOS /usr/etc/install +# IRIX /sbin/install +# AIX /bin/install +# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag +# AFS /usr/afsws/bin/install, which mishandles nonexistent args +# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" +# ./install, which can be erroneously created by make from ./install.sh. +echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6 +echo "configure:602: checking for a BSD compatible install" >&5 +if test -z "$INSTALL"; then +if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":" + for ac_dir in $PATH; do + # Account for people who put trailing slashes in PATH elements. + case "$ac_dir/" in + /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; + *) + # OSF1 and SCO ODT 3.0 have their own names for install. + # Don't use installbsd from OSF since it installs stuff as root + # by default. + for ac_prog in ginstall scoinst install; do + if test -f $ac_dir/$ac_prog; then + if test $ac_prog = install && + grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then + # AIX install. It has an incompatible calling convention. + : + else + ac_cv_path_install="$ac_dir/$ac_prog -c" + break 2 + fi + fi + done + ;; + esac + done + IFS="$ac_save_IFS" + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL="$ac_cv_path_install" + else + # As a last resort, use the slow shell script. We don't cache a + # path for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the path is relative. + INSTALL="$ac_install_sh" + fi +fi +echo "$ac_t""$INSTALL" 1>&6 + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + +echo $ac_n "checking whether build environment is sane""... $ac_c" 1>&6 +echo "configure:655: checking whether build environment is sane" >&5 +# Just in case +sleep 1 +echo timestamp > conftestfile +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "$*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "$*" != "X $srcdir/configure conftestfile" \ + && test "$*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + { echo "configure: error: ls -t appears to fail. Make sure there is not a broken +alias in your environment" 1>&2; exit 1; } + fi + + test "$2" = conftestfile + ) +then + # Ok. + : +else + { echo "configure: error: newly created file is older than distributed files! +Check your system clock" 1>&2; exit 1; } +fi +rm -f conftest* +echo "$ac_t""yes" 1>&6 +if test "$program_transform_name" = s,x,x,; then + program_transform_name= +else + # Double any \ or $. echo might interpret backslashes. + cat <<\EOF_SED > conftestsed +s,\\,\\\\,g; s,\$,$$,g +EOF_SED + program_transform_name="`echo $program_transform_name|sed -f conftestsed`" + rm -f conftestsed +fi +test "$program_prefix" != NONE && + program_transform_name="s,^,${program_prefix},; $program_transform_name" +# Use a double $ so make ignores it. +test "$program_suffix" != NONE && + program_transform_name="s,\$\$,${program_suffix},; $program_transform_name" + +# sed with no file args requires a program. +test "$program_transform_name" = "" && program_transform_name="s,x,x," + +echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6 +echo "configure:712: checking whether ${MAKE-make} sets \${MAKE}" >&5 +set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'` +if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftestmake <<\EOF +all: + @echo 'ac_maketemp="${MAKE}"' +EOF +# GNU make sometimes prints "make[1]: Entering...", which would confuse us. +eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=` +if test -n "$ac_maketemp"; then + eval ac_cv_prog_make_${ac_make}_set=yes +else + eval ac_cv_prog_make_${ac_make}_set=no +fi +rm -f conftestmake +fi +if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then + echo "$ac_t""yes" 1>&6 + SET_MAKE= +else + echo "$ac_t""no" 1>&6 + SET_MAKE="MAKE=${MAKE-make}" +fi + + +PACKAGE=eCos_synthetic_target_watchdog + +VERSION=0.1 + +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + { echo "configure: error: source directory already configured; run "make distclean" there first" 1>&2; exit 1; } +fi + + + +missing_dir=`cd $ac_aux_dir && pwd` +echo $ac_n "checking for working aclocal""... $ac_c" 1>&6 +echo "configure:751: checking for working aclocal" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (aclocal --version) < /dev/null > /dev/null 2>&1; then + ACLOCAL=aclocal + echo "$ac_t""found" 1>&6 +else + ACLOCAL="$missing_dir/missing aclocal" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working autoconf""... $ac_c" 1>&6 +echo "configure:764: checking for working autoconf" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (autoconf --version) < /dev/null > /dev/null 2>&1; then + AUTOCONF=autoconf + echo "$ac_t""found" 1>&6 +else + AUTOCONF="$missing_dir/missing autoconf" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working automake""... $ac_c" 1>&6 +echo "configure:777: checking for working automake" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (automake --version) < /dev/null > /dev/null 2>&1; then + AUTOMAKE=automake + echo "$ac_t""found" 1>&6 +else + AUTOMAKE="$missing_dir/missing automake" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working autoheader""... $ac_c" 1>&6 +echo "configure:790: checking for working autoheader" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (autoheader --version) < /dev/null > /dev/null 2>&1; then + AUTOHEADER=autoheader + echo "$ac_t""found" 1>&6 +else + AUTOHEADER="$missing_dir/missing autoheader" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working makeinfo""... $ac_c" 1>&6 +echo "configure:803: checking for working makeinfo" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (makeinfo --version) < /dev/null > /dev/null 2>&1; then + MAKEINFO=makeinfo + echo "$ac_t""found" 1>&6 +else + MAKEINFO="$missing_dir/missing makeinfo" + echo "$ac_t""missing" 1>&6 +fi + + +echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6 +echo "configure:817: checking whether to enable maintainer-specific portions of Makefiles" >&5 + # Check whether --enable-maintainer-mode or --disable-maintainer-mode was given. +if test "${enable_maintainer_mode+set}" = set; then + enableval="$enable_maintainer_mode" + USE_MAINTAINER_MODE=$enableval +else + USE_MAINTAINER_MODE=no +fi + + echo "$ac_t""$USE_MAINTAINER_MODE" 1>&6 + + +if test $USE_MAINTAINER_MODE = yes; then + MAINTAINER_MODE_TRUE= + MAINTAINER_MODE_FALSE='#' +else + MAINTAINER_MODE_TRUE='#' + MAINTAINER_MODE_FALSE= +fi + MAINT=$MAINTAINER_MODE_TRUE + + + +case "${host}" in + i[34567]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac + + +if test "${SUPPORTED}" = "yes"; then + SUPPORTED_TRUE= + SUPPORTED_FALSE='#' +else + SUPPORTED_TRUE='#' + SUPPORTED_FALSE= +fi + +if test "${SUPPORTED}" = "yes" ; then + + + package_dir=`cd ${srcdir} && /bin/pwd` + PACKAGE_VERSION=`dirname ${package_dir}` + PACKAGE_VERSION=`basename ${PACKAGE_VERSION}` + + package_dir=`dirname ${package_dir}` + package_dir=`dirname ${package_dir}` + + possibles="${package_dir}/.. ${package_dir}/../.. ${package_dir}/../../.. ${package_dir}/../../../.." + possibles="${possibles} ${package_dir}/../../../../.. ${package_dir}/../../../../../.." + + repository_root="" + for i in ${possibles}; do + if test -d "$i/"acsupport""; then + repository_root=$i + break + fi + done + + if test "${repository_root}" = "" ; then + { echo "configure: error: Failed to identify this package's position within the eCos repository" 1>&2; exit 1; } + fi + ECOS_REPOSITORY=`cd "${repository_root}/packages/pkgconf/.." && /bin/pwd` + + PACKAGE_DIR=`echo ${package_dir} | sed -e "s:${ECOS_REPOSITORY}/::"` + + PACKAGE_INSTALL="${PACKAGE_DIR}/${PACKAGE_VERSION}" + + + + + + +fi + +trap '' 1 2 15 +cat > confcache <<\EOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs. It is not useful on other systems. +# If it contains results you don't want to keep, you may remove or edit it. +# +# By default, configure uses ./config.cache as the cache file, +# creating it if it does not exist already. You can give configure +# the --cache-file=FILE option to use a different cache file; that is +# what configure does when it calls configure scripts in +# subdirectories, so they share the cache. +# Giving --cache-file=/dev/null disables caching, for debugging configure. +# config.status only pays attention to the cache file if you give it the +# --recheck option to rerun configure. +# +EOF +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, don't put newlines in cache variables' values. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +(set) 2>&1 | + case `(ac_space=' '; set | grep ac_space) 2>&1` in + *ac_space=\ *) + # `set' does not quote correctly, so add quotes (double-quote substitution + # turns \\\\ into \\, and sed turns \\ into \). + sed -n \ + -e "s/'/'\\\\''/g" \ + -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p" + ;; + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p' + ;; + esac >> confcache +if cmp -s $cache_file confcache; then + : +else + if test -w $cache_file; then + echo "updating cache $cache_file" + cat confcache > $cache_file + else + echo "not updating unwritable cache $cache_file" + fi +fi +rm -f confcache + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Any assignment to VPATH causes Sun make to only execute +# the first set of double-colon rules, so remove it if not needed. +# If there is a colon in the path, we need to keep it. +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d' +fi + +trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15 + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +cat > conftest.defs <<\EOF +s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g +s%[ `~#$^&*(){}\\|;'"<>?]%\\&%g +s%\[%\\&%g +s%\]%\\&%g +s%\$%$$%g +EOF +DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '` +rm -f conftest.defs + + +# Without the "./", some shells look in PATH for config.status. +: ${CONFIG_STATUS=./config.status} + +echo creating $CONFIG_STATUS +rm -f $CONFIG_STATUS +cat > $CONFIG_STATUS <<EOF +#! /bin/sh +# Generated automatically by configure. +# Run this file to recreate the current configuration. +# This directory was configured as follows, +# on host `(hostname || uname -n) 2>/dev/null | sed 1q`: +# +# $0 $ac_configure_args +# +# Compiler output produced by configure, useful for debugging +# configure, is in ./config.log if it exists. + +ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]" +for ac_option +do + case "\$ac_option" in + -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r) + echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion" + exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;; + -version | --version | --versio | --versi | --vers | --ver | --ve | --v) + echo "$CONFIG_STATUS generated by autoconf version 2.13" + exit 0 ;; + -help | --help | --hel | --he | --h) + echo "\$ac_cs_usage"; exit 0 ;; + *) echo "\$ac_cs_usage"; exit 1 ;; + esac +done + +ac_given_srcdir=$srcdir +ac_given_INSTALL="$INSTALL" + +trap 'rm -fr `echo "Makefile:Makefile.in" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15 +EOF +cat >> $CONFIG_STATUS <<EOF + +# Protect against being on the right side of a sed subst in config.status. +sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g; + s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF +$ac_vpsub +$extrasub +s%@SHELL@%$SHELL%g +s%@CFLAGS@%$CFLAGS%g +s%@CPPFLAGS@%$CPPFLAGS%g +s%@CXXFLAGS@%$CXXFLAGS%g +s%@FFLAGS@%$FFLAGS%g +s%@DEFS@%$DEFS%g +s%@LDFLAGS@%$LDFLAGS%g +s%@LIBS@%$LIBS%g +s%@exec_prefix@%$exec_prefix%g +s%@prefix@%$prefix%g +s%@program_transform_name@%$program_transform_name%g +s%@bindir@%$bindir%g +s%@sbindir@%$sbindir%g +s%@libexecdir@%$libexecdir%g +s%@datadir@%$datadir%g +s%@sysconfdir@%$sysconfdir%g +s%@sharedstatedir@%$sharedstatedir%g +s%@localstatedir@%$localstatedir%g +s%@libdir@%$libdir%g +s%@includedir@%$includedir%g +s%@oldincludedir@%$oldincludedir%g +s%@infodir@%$infodir%g +s%@mandir@%$mandir%g +s%@host@%$host%g +s%@host_alias@%$host_alias%g +s%@host_cpu@%$host_cpu%g +s%@host_vendor@%$host_vendor%g +s%@host_os@%$host_os%g +s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g +s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g +s%@INSTALL_DATA@%$INSTALL_DATA%g +s%@PACKAGE@%$PACKAGE%g +s%@VERSION@%$VERSION%g +s%@ACLOCAL@%$ACLOCAL%g +s%@AUTOCONF@%$AUTOCONF%g +s%@AUTOMAKE@%$AUTOMAKE%g +s%@AUTOHEADER@%$AUTOHEADER%g +s%@MAKEINFO@%$MAKEINFO%g +s%@SET_MAKE@%$SET_MAKE%g +s%@MAINTAINER_MODE_TRUE@%$MAINTAINER_MODE_TRUE%g +s%@MAINTAINER_MODE_FALSE@%$MAINTAINER_MODE_FALSE%g +s%@MAINT@%$MAINT%g +s%@SUPPORTED_TRUE@%$SUPPORTED_TRUE%g +s%@SUPPORTED_FALSE@%$SUPPORTED_FALSE%g +s%@ECOS_REPOSITORY@%$ECOS_REPOSITORY%g +s%@PACKAGE_DIR@%$PACKAGE_DIR%g +s%@PACKAGE_VERSION@%$PACKAGE_VERSION%g +s%@PACKAGE_INSTALL@%$PACKAGE_INSTALL%g + +CEOF +EOF + +cat >> $CONFIG_STATUS <<\EOF + +# Split the substitutions into bite-sized pieces for seds with +# small command number limits, like on Digital OSF/1 and HP-UX. +ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script. +ac_file=1 # Number of current file. +ac_beg=1 # First line for current file. +ac_end=$ac_max_sed_cmds # Line after last line for current file. +ac_more_lines=: +ac_sed_cmds="" +while $ac_more_lines; do + if test $ac_beg -gt 1; then + sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file + else + sed "${ac_end}q" conftest.subs > conftest.s$ac_file + fi + if test ! -s conftest.s$ac_file; then + ac_more_lines=false + rm -f conftest.s$ac_file + else + if test -z "$ac_sed_cmds"; then + ac_sed_cmds="sed -f conftest.s$ac_file" + else + ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file" + fi + ac_file=`expr $ac_file + 1` + ac_beg=$ac_end + ac_end=`expr $ac_end + $ac_max_sed_cmds` + fi +done +if test -z "$ac_sed_cmds"; then + ac_sed_cmds=cat +fi +EOF + +cat >> $CONFIG_STATUS <<EOF + +CONFIG_FILES=\${CONFIG_FILES-"Makefile:Makefile.in"} +EOF +cat >> $CONFIG_STATUS <<\EOF +for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then + # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in". + case "$ac_file" in + *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'` + ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;; + *) ac_file_in="${ac_file}.in" ;; + esac + + # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories. + + # Remove last slash and all that follows it. Not all systems have dirname. + ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'` + if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then + # The file is in a subdirectory. + test ! -d "$ac_dir" && mkdir "$ac_dir" + ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`" + # A "../" for each directory in $ac_dir_suffix. + ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'` + else + ac_dir_suffix= ac_dots= + fi + + case "$ac_given_srcdir" in + .) srcdir=. + if test -z "$ac_dots"; then top_srcdir=. + else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;; + /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;; + *) # Relative path. + srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix" + top_srcdir="$ac_dots$ac_given_srcdir" ;; + esac + + case "$ac_given_INSTALL" in + [/$]*) INSTALL="$ac_given_INSTALL" ;; + *) INSTALL="$ac_dots$ac_given_INSTALL" ;; + esac + + echo creating "$ac_file" + rm -f "$ac_file" + configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure." + case "$ac_file" in + *Makefile*) ac_comsub="1i\\ +# $configure_input" ;; + *) ac_comsub= ;; + esac + + ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"` + sed -e "$ac_comsub +s%@configure_input@%$configure_input%g +s%@srcdir@%$srcdir%g +s%@top_srcdir@%$top_srcdir%g +s%@INSTALL@%$INSTALL%g +" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file +fi; done +rm -f conftest.s* + +EOF +cat >> $CONFIG_STATUS <<EOF + +EOF +cat >> $CONFIG_STATUS <<\EOF + +exit 0 +EOF +chmod +x $CONFIG_STATUS +rm -fr confdefs* $ac_clean_files +test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1 +
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/configure.in @@ -0,0 +1,73 @@ +dnl Process this file with autoconf to produce a configure script. +dnl ==================================================================== +dnl +dnl configure.in +dnl +dnl configure script for eCos synthetic target watchdog +dnl host-side support +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos synthetic target support. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/09/04 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + + +AC_INIT(watchdog.tcl) + +dnl Pick up the support files from the top-level acsupport directory. +AC_CONFIG_AUX_DIR(../../../../../../acsupport) + +ECOS_CHECK_BUILD_ne_SRC +AC_CANONICAL_HOST +AM_INIT_AUTOMAKE(eCos_synthetic_target_watchdog,0.1,0) +AM_MAINTAINER_MODE + +dnl The current version of the synthetic target is implemented only for +dnl x86 Linux platforms, so a test is appropriate here. However +dnl it is not a good idea for the configure script to report an error: +dnl that would prevent any top-level configury working for other +dnl platforms. Instead an automake conditional is used to suppress adding +dnl targets to the build. +case "${host}" in + i[[34567]]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac +AM_CONDITIONAL(SUPPORTED, test "${SUPPORTED}" = "yes") + +dnl The watchdog host-side support only involves a Tcl +dnl script and data files, so nothing needs to be compiled +if test "${SUPPORTED}" = "yes" ; then + ECOS_PACKAGE_DIRS +fi + +AC_OUTPUT(Makefile:Makefile.in)
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new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/doghouse.pov @@ -0,0 +1,161 @@ +// A simple "doghouse" picture, used for the synthetic target +// watchdog device host-side. +// +// This file is normally built using the following command line: +// +// x-povray +Idoghouse.pov +W128 +H128 +D +Q9 +AM2 +A0.9 +FP + +#include "consts.inc" +#include "colors.inc" +#include "shapes.inc" +#include "textures.inc" +#include "skies.inc" +#include "woods.inc" + +camera { + location <4.5, 2.2, -5> + look_at <2, 2, 2> +} + +light_source { + <7, 4, -1.5> + color White +} + +sky_sphere { S_Cloud2 scale 2 } +background { colour LightBlue } + +plane { + y 0 + texture { + pigment { color red 0.5 green 0.98 blue 0 turbulence 0.5} + normal { bumps 0.4 scale 0.1 } + } +} + +fog { + distance 40 + fog_type Ground_Fog + fog_offset 1 + fog_alt 1 + colour rgbf<0, 0.2, 0.2, 0.3> + turbulence 0.2 +} + +// A plank is a 1x1x0.1 block with a corner at the origin. The edges are +// slightly rounded, to make sure that the plank boundaries are just +// about visible. +#declare Plank = + superellipsoid { <0.03,0.03> scale <0.5,0.5,0.05> translate <0.5,0.5,0.05> texture { T_Wood10 } } + +// A variant, for the roof +#declare RoofPlank = + superellipsoid { <0.05,0.05> scale <0.5,0.5,0.05> translate <0.5,0.5,0.05> texture { T_Wood14 } } + +// The front and back, a rectangle with a triangle on top. +// Going clockwise from the bottom left, the coordinates are: +// <0,0> <0,3.2>, <2.4.5>, <4,3.2>, <4.0> +// Each is made from five horizontal planks. +// +// Note: this doghouse is not intended to be an example of good +// woodworking. For example, butt joints for the walls are a bad idea. +// Most importantly the roof should involve lapped joints with a +// sensible ridge, the current construction is not going to keep the +// rain out. +#declare RoofAngle = degrees(atan2(1.3,2)); +#declare RoofAngleR = atan2(1.3,2); + +#declare FrontBack = + difference { + union { + object { Plank scale <4,1,1> translate <0,0,0> } + object { Plank scale <4,1,1> translate <0,1,0> } + object { Plank scale <4,1,1> translate <0,2,0> } + object { Plank scale <4,1,1> translate <0,3,0> } + object { Plank scale <4,1,1> translate <0,4,0> } + } + union { + box { <0,0,0> <4,4,1> rotate <0,0,RoofAngle> translate <0,3.2,-0.5> } + box { <0,0,0> <4,4,1> rotate <0,0, -1 * RoofAngle> translate <2,4.5,-0.5> } + pigment { Black } + } + } + +// The front also has some text to name the dog, and a +// cutout for the opening. +object { + difference { + object { FrontBack } + union { + text { + ttf "cyrvetic.ttf" "FIFI" 0.1 0 + translate <1.2, 2.8, -0.05> + } + box { <1,0,-0.5> <3,2.2,0.5> } + object { + cylinder { <0,0,0> <0,0,1> 1 } + scale <1,0.33,1> + translate <2,2.2,-0.5> + } + pigment { Black } + } + } +} + +// The back, nothing fancy needed here. The doghouse is twice +// as deep as it is wide. +object { FrontBack translate <0,0,8> } + +// A floor, to prevent any bright grass showing inside +box { <0.05,0,0.05> <3.95,0.05,7.95> texture { T_Wood3 } } + +// LHS +object { Plank scale <8,1,1> rotate <0,-90,0> translate <0,0,0.1> } +object { Plank scale <8,1,1> rotate <0,-90,0> translate <0,1,0.1> } +object { Plank scale <8,1,1> rotate <0,-90,0> translate <0,2,0.1> } + +// RHS +object { Plank scale <8,1,1> rotate <0,-90,0> translate <4,0,0.1> } +object { Plank scale <8,1,1> rotate <0,-90,0> translate <4,1,0.1> } +object { Plank scale <8,1,1> rotate <0,-90,0> translate <4,2,0.1> } + +// Now for the roof. The top of the roof is at <2,4.5,0>, and the +// corners are at <0,3.2,0> and <4,3.2,0>. The planks are 0.1 units +// thick. + +#declare RoofPlank = + superellipsoid { <0.05,0.05> scale <0.5,0.5,0.05> translate <0.5,0.5,0.05> texture { T_Wood14 } } + +#declare RoofPlank_L = object { + RoofPlank + rotate <0, -90, RoofAngle - 90> + scale<1,1,8.5> +} + +#declare RoofPlank_R = object { + RoofPlank + rotate <0, -90, -90 - RoofAngle> + scale<1,1,8.5> +} + +object { RoofPlank_L translate<2 - (1 * cos(RoofAngleR)), 4.5 - (1 * sin(RoofAngleR)), -0.25> } +object { RoofPlank_L translate<2 - (2 * cos(RoofAngleR)), 4.5 - (2 * sin(RoofAngleR)), -0.25> } +object { RoofPlank_L translate<2 - (3 * cos(RoofAngleR)), 4.5 - (3 * sin(RoofAngleR)), -0.25> } + +object { RoofPlank_R translate<2 + (-0.1 * cos(RoofAngleR)), 4.5 - (-0.1 * sin(RoofAngleR)), -0.25> } +object { RoofPlank_R translate<2 + (0.9 * cos(RoofAngleR)), 4.5 - (0.9 * sin(RoofAngleR)), -0.25> } +object { RoofPlank_R translate<2 + (1.9 * cos(RoofAngleR)), 4.5 - (1.9 * sin(RoofAngleR)), -0.25> } + +// And just for fun, a dog bowl. +object { + merge { + difference { + torus { 1.0 0.5 } + box { <-1,-1,-1> <1,0,1> pigment { Black } } + } + cylinder { <0,0,0> <0,0.2,0> 0.9 } + } + scale <0.5,0.5,0.5> + translate <-0.5,0,-0.7> + pigment { Yellow } +}
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new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/watchdog.tcl @@ -0,0 +1,425 @@ +# {{{ Banner + +# ============================================================================ +# +# watchdog.tcl +# +# Watchdog support for the eCos synthetic target I/O auxiliary +# +# ============================================================================ +# ####COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos host tools. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ---------------------------------------------------------------------------- +# +# ####COPYRIGHTEND#### +# ============================================================================ +# #####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Contact(s): bartv +# Date: 2002/09/04 +# Version: 0.01 +# Description: +# Implementation of the watchdog device. This script should only ever +# be run from inside the ecosynth auxiliary. +# +# ####DESCRIPTIONEND#### +# ============================================================================ + +# }}} + +namespace eval watchdog { + + # Was initialization successful? + variable init_ok 1 + + # Has the alarm triggered? + variable alarm_triggered 0 + + # The eCos application process id. This is needed to send a SIGPWR signal + # if the watchdog triggers, and to access /proc/<pid>/stat to obtain + # timing information. Strictly speaking _ppid is not exported by + # the I/O auxiliary. + if { ! [info exists synth::_ppid] } { + synth::report_error "Watchdog initialization failed, _ppid variable required" + return "" + } + variable ecos_pid $synth::_ppid + + # Resolution, i.e. how long to go between checks. Currently this is hard-wired + # to one second, or 1000 ms. This may become configurable, either on the + # target-side via CDL or on the host-side via the target definition file. + # Note that currently the watchdog device and the GUI get updated via the + # same timer. If the resolution is changed to e.g. 10 seconds then it might + # be a good idea to update the GUI more frequently, although there are + # arguments for keeping the animation in step with the real work. + variable resolution 1000 + + # Options from the target definition file + variable use_wallclock 0 + variable window_pack "-in .main.n -side right" + variable sound_file "" + variable sound_player "play" + + if { [synth::tdf_has_device "watchdog"] } { + if { [synth::tdf_has_option "watchdog" "use"] } { + set _use [synth::tdf_get_option "watchdog" "use"] + if { "wallclock_time" == $_use } { + set watchdog::use_wallclock 1 + } elseif { "consumed_cpu_time" == $_use } { + set watchdog::use_wallclock 0 + } else { + synth::report_error "Invalid entry in target definition file $synth::target_definition\n\ + \ Device watchdog, option \"use\" should be \"wallclock_time\" or \"consumed_cpu_time\"\n" + } + unset _use + } + if { [synth::tdf_has_option "watchdog" "watchdog_pack"] } { + set watchdog::window_pack [synth::tdf_get_option "watchdog" "watchdog_pack"] + # Too complicated to validate here, instead leave it to a catch statement + # when the window actually gets packed + } + if { [synth::tdf_has_option "watchdog" "sound"] } { + set _sound_file [synth::tdf_get_option "watchdog" "sound"] + # Look for this sound file in the install tree first, then absolute or relative + if { [file exists [file join $synth::device_install_dir $_sound_file] ] } { + set _sound_file [file join $synth::device_install_dir $_sound_file] + } + if { ![file exists $_sound_file] } { + synth::report_error "Invalid entry in target definition file $synth::target_definition\n\ + \ Device watchdog, option \"sound\", failed to find $_sound_file\n" + } elseif { ! [file readable $_sound_file] } { + synth::report_error "Invalid entry in target definition file $synth::target_definition\n\ + \ Device watchdog, option \"sound\", no read access to file $_sound_file\n" + } else { + set watchdog::sound_file $_sound_file + } + unset _sound_file + } + if { [synth::tdf_has_option "watchdog" "sound_player"] } { + set watchdog::sound_player [synth::tdf_get_option "watchdog" "sound_player"] + } + } + + # There is no point in creating the watchdog window if any of the image files are missing + if { $synth::flag_gui } { + foreach _image [list "doghouse.gif" "alarm.gif" "eye.gif" "asleep.gif"] { + variable image_[file rootname $_image] + if { ! [synth::load_image "watchdog::image_[file rootname $_image]" [file join $synth::device_install_dir $_image]] } { + synth::report_error "Watchdog device, unable to load image $_image\n\ + \ This file should have been installed in $synth::device_install_dir\n" + set watchdog::init_ok 0 + } + } + } + if { $synth::flag_gui && $watchdog::init_ok } { + canvas .watchdog -width [image width $image_doghouse] -height [image height $image_doghouse] \ + -borderwidth 0 + variable background [.watchdog create image 0 0 -anchor nw -image $image_doghouse] + + # Eye positions inside the doghouse. The eye is an 8x10 gif, + # mostly white but transparent around the corners + variable left_eye_x 48 + variable left_eye_y 70 + variable right_eye_x 58 + variable right_eye_y 70 + + # Pupil positions relative to the eye. The pupils are 3x3 rectangles. + # The dog can look in one of nine different directions, with both eyes + # looking in the same direction (if visible) + variable pupil_positions { { 1 6 } { 1 5 } { 1 3 } { 3 1 } { 3 4 } { 3 6 } { 4 3 } { 4 5 } { 4 6 } } + + # Which eyes are currently visible: none, left, right or both + variable eyes "none" + # What is the current pupil position? + variable pupils 4 + + variable left_eye [.watchdog create image $left_eye_x $left_eye_y -anchor nw -image $image_eye] + variable right_eye [.watchdog create image $right_eye_x $right_eye_y -anchor nw -image $image_eye] + + variable left_pupil \ + [.watchdog create rectangle \ + [expr $left_eye_x + [lindex [lindex $pupil_positions $pupils] 0]] \ + [expr $left_eye_y + [lindex [lindex $pupil_positions $pupils] 1]] \ + [expr $left_eye_x + [lindex [lindex $pupil_positions $pupils] 0] + 2] \ + [expr $left_eye_y + [lindex [lindex $pupil_positions $pupils] 1] + 2] \ + -fill black] + variable right_pupil \ + [.watchdog create rectangle \ + [expr $right_eye_x + [lindex [lindex $pupil_positions $pupils] 0]] \ + [expr $right_eye_y + [lindex [lindex $pupil_positions $pupils] 1]] \ + [expr $right_eye_x + [lindex [lindex $pupil_positions $pupils] 0] + 2] \ + [expr $right_eye_y + [lindex [lindex $pupil_positions $pupils] 1] + 2] \ + -fill black] + + + # The dog is asleep until the eCos application activates the watchdog device + .watchdog lower $left_eye $background + .watchdog lower $right_eye $background + .watchdog lower $left_pupil $background + .watchdog lower $right_pupil $background + + # Prepare for an alarm, but obviously the alarm picture should be hidden for now. + variable alarm [.watchdog create image 30 56 -anchor nw -image $image_alarm] + .watchdog lower $alarm $background + + # Start asleep + variable asleep [.watchdog create image 48 70 -anchor nw -image $image_asleep] + + # Now try to pack the watchdog window using the option provided by the + # user. If that fails, report the error and pack in a default window. + if { [catch { eval pack .watchdog $watchdog::window_pack } message] } { + synth::report_error "Watchdog device, failed to pack window in $watchdog::window_pack\n $message" + pack .watchdog -in .main.n -side right + } + + # Updating the display. This happens once a second. + # If neither eye is visible, choose randomly between + # left-only, right-only or both. Otherwise there is + # a one in eight chance of blinking, probably switching + # to one of the other eye modes + # + # Also, the visible pupil(s) will move every second, to one + # of nine positions + proc gui_update { } { + + if { "none" == $watchdog::eyes} { + set rand [expr int(3 * rand())] + if { 0 == $rand } { + set watchdog::eyes "left" + .watchdog raise $watchdog::left_eye $watchdog::background + .watchdog raise $watchdog::left_pupil $watchdog::left_eye + } elseif { 1 == $rand } { + set watchdog::eyes "right" + .watchdog raise $watchdog::right_eye $watchdog::background + .watchdog raise $watchdog::right_pupil $watchdog::right_eye + } else { + set watchdog::eyes "both" + .watchdog raise $watchdog::left_eye $watchdog::background + .watchdog raise $watchdog::left_pupil $watchdog::left_eye + .watchdog raise $watchdog::right_eye $watchdog::background + .watchdog raise $watchdog::right_pupil $watchdog::right_eye + } + } else { + if { 0 == [expr int(8 * rand())] } { + set watchdog::eyes "none" + .watchdog lower $watchdog::left_eye $watchdog::background + .watchdog lower $watchdog::right_eye $watchdog::background + .watchdog lower $watchdog::left_pupil $watchdog::background + .watchdog lower $watchdog::right_pupil $watchdog::background + + # There is no point in moving the pupils if both eyes are shut + return + } + } + + set watchdog::pupils [expr int(9 * rand())] + set new_pupil_x [lindex [lindex $watchdog::pupil_positions $watchdog::pupils] 0] + set new_pupil_y [lindex [lindex $watchdog::pupil_positions $watchdog::pupils] 1] + + if { ("left" == $watchdog::eyes) || ("both" == $watchdog::eyes) } { + .watchdog coords $watchdog::left_pupil \ + [expr $watchdog::left_eye_x + $new_pupil_x] \ + [expr $watchdog::left_eye_y + $new_pupil_y] \ + [expr $watchdog::left_eye_x + $new_pupil_x + 2] \ + [expr $watchdog::left_eye_y + $new_pupil_y + 2] + } + if { ("right" == $watchdog::eyes) || ("both" == $watchdog::eyes) } { + .watchdog coords $watchdog::right_pupil \ + [expr $watchdog::right_eye_x + $new_pupil_x] \ + [expr $watchdog::right_eye_y + $new_pupil_y] \ + [expr $watchdog::right_eye_x + $new_pupil_x + 2] \ + [expr $watchdog::right_eye_y + $new_pupil_y + 2] + } + } + + # Cancel the gui display when the eCos application has exited. + # The watchdog is allowed to go back to sleep. If the application + # exited because of the watchdog then of course the alarm picture + # should remain visible, otherwise it would be just a flash. + proc gui_cancel { } { + .watchdog lower $watchdog::left_eye $watchdog::background + .watchdog lower $watchdog::right_eye $watchdog::background + .watchdog lower $watchdog::left_pupil $watchdog::background + .watchdog lower $watchdog::right_pupil $watchdog::background + if { ! $watchdog::alarm_triggered } { + .watchdog raise $watchdog::asleep $watchdog::background + } + } + + # Raise the alarm. This involves hiding the eyes and raising + # the alarm picture. If sound is enabled, the sound player + # should be invoked + proc gui_alarm { } { + .watchdog lower $watchdog::asleep $watchdog::background + .watchdog lower $watchdog::left_eye $watchdog::background + .watchdog lower $watchdog::right_eye $watchdog::background + .watchdog lower $watchdog::left_pupil $watchdog::background + .watchdog lower $watchdog::right_pupil $watchdog::background + .watchdog raise $watchdog::alarm $watchdog::background + + if { "" != $watchdog::sound_file } { + # Catch errors on the actual exec, e.g. if the sound player is + # invalid, but play the sound in the background. If there are + # problems actually playing the sound then the user should + # still see a message on stderr. Blocking the entire auxiliary + # for a few seconds is not acceptable. + if { [catch { eval exec -- $watchdog::sound_player $watchdog::sound_file & } message] } { + synth::report_warning "Watchdog device, failed to play alarm sound file\n $message\n" + } + } + } + + set _watchdog_help [file join $synth::device_src_dir "doc" "devs-watchdog-synth.html"] + if { ![file readable $_watchdog_help] } { + synth::report_warning "Failed to locate synthetic watchdog documentation $_watchdog_help\n\ + \ Help->Watchdog target menu option disabled.\n" + set _watchdog_help "" + } + if { "" == $_watchdog_help } { + .menubar.help add command -label "Watchdog" -state disabled + } else { + .menubar.help add command -label "Watchdog" -command [list synth::handle_help "file://$_watchdog_help"] + } + } + + # Now for the real work. By default the watchdog is asleep. The eCos + # application can activate it with a start message, which results + # in an "after" timer. That runs once a second to check whether or not + # the watchdog should trigger, and also updates the GUI. + # + # The target-side code should perform a watchdog reset at least once + # a second, which involves another message to this script and the + # setting of the reset_received flag. + # + # The update handler gets information about the eCos application using + # /proc/<pid>/stat (see man 5 proc). The "state" field is important: + # a state of T indicates that the application is stopped, probably + # inside gdb, so cannot reset the watchdog. The other important field + # is utime, the total number of jiffies (0.01 seconds) executed in + # user space. The code maintains an open file handle to the /proc file. + + variable reset_received 0 + variable after_id "" + variable proc_stat "" + variable last_jiffies 0 + + set _filename "/proc/[set watchdog::ecos_pid]/stat" + if { [catch { open $_filename "r" } proc_stat ] } { + synth::report_error "Watchdog device, failed to open $_filename\n $proc_stat\n" + set watchdog::init_ok 0 + } + unset _filename + + proc update { } { + set watchdog::after_id [after $watchdog::resolution watchdog::update] + if { $synth::flag_gui } { + watchdog::gui_update + } + seek $watchdog::proc_stat 0 "start" + set line [gets $watchdog::proc_stat] + scan $line "%*d %*s %s %*d %*d %*d %*d %*d %*lu %*lu %*lu %*lu %*lu %lu" state jiffies + + # In theory it is possible to examine the state field (the third argument). + # If set to T then that indicates the eCos application is traced or + # stopped, probably inside gdb, and it would make sense to act as if + # the application had sent a reset. Unfortunately the state also appears + # to be set to T if the application is blocked in a system call while + # being debugged - including the idle select(), making the test useless. + # FIXME: figure out how to distinguish between being blocked inside gdb + # and being in a system call. + #if { "T" == $state } { + # set watchdog::reset_received 1 + # return + #} + + # If there has been a recent reset the eCos application can continue to run for a bit longer. + if { $watchdog::reset_received } { + set watchdog::last_jiffies $jiffies + set watchdog::reset_received 0 + return + } + + # We have not received a reset. If the watchdog is using wallclock time then + # that is serious. If the watchdog is using elapsed cpu time then the eCos + # application may not actually have consumed a whole second of cpu time yet. + if { $watchdog::use_wallclock || (($jiffies - $watchdog::last_jiffies) > ($watchdog::resolution / 10)) } { + set watchdog::alarm_triggered 1 + # Report the situation via the main text window + synth::report "Watchdog device: the eCos application has not sent a recent reset\n Raising SIGPWR signal.\n" + # Then kill off the eCos application + exec kill -PWR $watchdog::ecos_pid + # There is no point in another run of the timer + after cancel $watchdog::after_id + # And if the GUI is running, raise the alarm visually + if { $synth::flag_gui } { + watchdog::gui_alarm + } + } + } + + # When the eCos application has exited, cancel the timer and + # clean-up the GUI. Also get rid of the open file since the + # /proc/<pid>/stat file is no longer meaningful + proc exit_hook { arg_list } { + if { "" != $watchdog::after_id } { + after cancel $watchdog::after_id + } + if { $synth::flag_gui } { + watchdog::gui_cancel + } + close $watchdog::proc_stat + } + synth::hook_add "ecos_exit" watchdog::exit_hook + + proc handle_request { id reqcode arg1 arg2 reqdata reqlen reply_len } { + if { 0x01 == $reqcode } { + # A "start" request. If the watchdog has already started, + # this request is a no-op. Otherwise a timer is enabled. + # This is made to run almost immediately, so that the + # GUI gets a quick update. Setting the reset_received flag + # ensures that the watchdog will not trigger immediately + set watchdog::reset_received 1 + if { "" == $watchdog::after_id } { + set watchdog::after_id [after 1 watchdog::update] + } + if { $synth::flag_gui } { + .watchdog lower $watchdog::asleep $watchdog::background + } + } elseif { 0x02 == $reqcode } { + # A "reset" request. Just set a flag, the update handler + # will detect this next time it runs. + set watchdog::reset_received 1 + } + } + + proc instantiate { id name data } { + return watchdog::handle_request + } +} + +if { $watchdog::init_ok } { + return watchdog::instantiate +} else { + synth::report "Watchdog cannot be instantiated, initialization failed.\n" + return "" +}
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/host/watchdog.tdf @@ -0,0 +1,63 @@ +synth_device watchdog { + + ## How should the watchdog device decide that the watchdog has + ## triggered, assuming the eCos application has failed to + ## reset the device in time. There are two options: wallclock + ## time, where the watchdog will trigger after a second + ## irrespective of what the eCos application has been doing; + ## or consumed cpu time, where the watchdog will only trigger + ## if the eCos application has actually run for a whole second. + ## + ## Using wallclock time matches most real hardware, + ## but can give spurious results if there are other processes + ## running and consuming cpu cycles. Also, if the user has + ## halted the application in gdb then the watchdog will trigger + ## even though the application has no chance to reset the + ## watchdog. + ## + ## Using consumed cpu cycles avoids these problems. + ## However the default implementation of the idle thread action + ## is to block in a select() system call, so if the eCos + ## application spends most of its time idling but not resetting + ## the watchdog then the device will not trigger. The + ## configuration option CYGIMP_HAL_IDLE_THREAD_SPIN can be used + ## to change the synthetic target HAL's implementation of the + ## idle thread action. + ## + ## The default is to use consumed_cpu_time. Wallclock time can + ## be selected by uncommenting the next line. + # use wallclock_time + # use consumed_cpu_time + + ## When running in GUI mode there will be a small window showing + ## the current state of the watchdog: asleep, watching, or giving + ## the alarm. This window can be packed as desired, using one + ## of the container frames .main.nw .main.n .main.ne .main.w + ## .main.e .main.sw .main.s or .main.se, and with a position of + ## left, right, top or bottom. The default is to pack inside the + ## .main.n frame, on the right, thus causing the watchdog to + ## appear above the central text window. + # watchdog_pack -in .main.n -side right + + ## If running in GUI mode, when the watchdog triggers and resets + ## the eCos application this will be shown in the display. + ## Optionally the watchdog device can also give an audible alert + ## when this happens. This is disabled by default to avoid + ## annoying co-workers, but can be enabled by specifying a suitable + ## sound file. Two such files, sound1.au and sound2.au, are supplied + ## with the watchdog device itself. Alternatively the user can + ## specify a different sound file using a suitable path + # sound sound1.au + # sound sound2.au + # sound ~/sounds/my_watchdog_alert.au + + ## If sound is enabled then the watchdog device needs some way to + ## access the host's sound hardware. Rather than accessing + ## /dev/audio or /dev/dsp directly the watchdog.tcl script will + ## run an external program. This can avoid complications with + ## different sound file formats etc. The default program is + ## "play", a front-end to the sox utility, but a different + ## program or script can be specified if desired. It will be run + ## simply as "<program> <sound file> &" + # sound_player play +}
new file mode 100644 --- /dev/null +++ b/packages/devs/watchdog/synth/current/src/synth_watchdog.cxx @@ -0,0 +1,159 @@ +//========================================================================== +// +// synth_watchdog.cxx +// +// Watchdog driver for the synthetic target +// +//========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting the +// copyright holder(s). +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contributors: bartv +// Date: 2002-09-04 +// +//####DESCRIPTIONEND#### +//========================================================================== + +#include <pkgconf/system.h> +#include <pkgconf/devs_watchdog_synth.h> + +#ifdef CYGIMP_WATCHDOG_HARDWARE + +#include <cyg/hal/hal_arch.h> +#include <cyg/infra/cyg_type.h> +#include <cyg/infra/cyg_ass.h> +#include <cyg/infra/diag.h> +#include <cyg/hal/hal_io.h> + +// FIXME: right now the generic watchdog header depends on the +// kernel. That should be fixed in the watchdog code, but will +// affect some device drivers as well +#include <pkgconf/kernel.h> +#include <cyg/io/watchdog.hxx> + +// Protocol between host and target +#define SYNTH_WATCHDOG_START 0x01 +#define SYNTH_WATCHDOG_RESET 0x02 + +// The synthetic target's watchdog implementation involves interaction +// with a watchdog.tcl script running in the I/O auxiliary. The device +// must be instantiated during system initialization, preferably via +// a prioritized C++ static constructor. The generic watchdog package +// does have a static object, but it is not prioritized. If +// CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG is enabled then that object's +// constructor would get called too late. +// +// Instead a private class is defined here, and once instance is created. +// That instance gets referenced by the Cyg_Watchdog members, so +// selective linking does not get in the way. Instantiation happens inside +// the constructor, and the main Cyg_Watchdog::start() and reset() functions +// involve passing a message to the host-side. +// +// There is an open issue re. resolution. Usually the hardware imposes +// limits on what resolutions are valid, in fact there may be only one. +// With the synthetic target it would be possible to configure the +// desired resolution either on the target-side using a CDL option, or +// on the host-side using the target definition file. The resolution +// would have to be fairly coarse, probably at least 0.1 seconds, +// to allow for communication overheads. It is not clear whether +// target-side or host-side configuration is more appropriate, so for +// now a fixed resolution of one second is used. + +class _Synth_Watchdog { + public: + _Synth_Watchdog(); + ~_Synth_Watchdog() { } + + cyg_uint64 resolution; +}; + +// A static instance of the _Synth_Watchdog class, whose constructor will +// be called at the right time to instantiate host-side support. +static _Synth_Watchdog _synth_watchdog_object CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_DRIVERS); + +// Id for communicating with the watchdog instance in the auxiliary +static int aux_id = -1; + +_Synth_Watchdog::_Synth_Watchdog() +{ + // SIGPWR is disabled by default. It has to be reenabled. + struct cyg_hal_sys_sigset_t blocked; + CYG_HAL_SYS_SIGEMPTYSET(&blocked); + CYG_HAL_SYS_SIGADDSET(&blocked, CYG_HAL_SYS_SIGPWR); + cyg_hal_sys_sigprocmask(CYG_HAL_SYS_SIG_UNBLOCK, &blocked, (cyg_hal_sys_sigset_t*) 0); + + resolution = 1000000000LL; + if (synth_auxiliary_running) { + aux_id = synth_auxiliary_instantiate("devs/watchdog/synth", + SYNTH_MAKESTRING(CYGPKG_DEVS_WATCHDOG_SYNTH), + "watchdog", + (const char*) 0, + (const char*) 0); + } +} + +// Hardware initialization. This has already happened in the +// _Synth_Watchdog constructor, all that is needed here is to +// propagate the resolution. +void +Cyg_Watchdog::init_hw(void) +{ + resolution = _synth_watchdog_object.resolution; +} + +void +Cyg_Watchdog::start(void) +{ + if (synth_auxiliary_running && (-1 != aux_id)) { + synth_auxiliary_xchgmsg(aux_id, SYNTH_WATCHDOG_START, 0, 0, + (const unsigned char*)0, 0, + (int *) 0, + (unsigned char*) 0, (int*) 0, 0); + } +} + +void +Cyg_Watchdog::reset() +{ + if (synth_auxiliary_running && (-1 != aux_id)) { + synth_auxiliary_xchgmsg(aux_id, SYNTH_WATCHDOG_RESET, 0, 0, + (const unsigned char*)0, 0, + (int *) 0, + (unsigned char*) 0, (int*) 0, 0); + } +} + +#endif // CYGIMP_WATCHDOG_HARDWARE
--- a/packages/ecos.db +++ b/packages/ecos.db @@ -1321,6 +1321,14 @@ package CYGPKG_DEVS_ETH_MCF5272 { } +package CYGPKG_DEVS_ETH_ECOSYNTH { + alias { "Synthetic target ethernet driver" ecosyntheth ecosynth_eth_driver } + directory devs/eth/synth/ecosynth + script syntheth.cdl + hardware + description "Ethernet driver for the synthetic target" +} + package CYGPKG_IO_PCI { alias { "PCI configuration library" io_pci } directory io/pci @@ -1479,6 +1487,16 @@ package CYGPKG_DEVICES_WATCHDOG_H8300_H8 Hitachi H8/300H chip." } +package CYGPKG_DEVS_WATCHDOG_SYNTH { + alias { "Watchdog driver for the synthetic target" devices_watchdog_synth device_watchdog_synth } + directory devs/watchdog/synth + script synth_watchdog.cdl + hardware + description " + This package provides a watchdog driver for the eCos + synthetic target." +} + package CYGPKG_IO_WATCHDOG { alias { "Watchdog IO device" watchdog io_watchdog } directory io/watchdog @@ -3460,6 +3478,8 @@ target linux { packages { CYGPKG_HAL_SYNTH CYGPKG_HAL_SYNTH_I386 CYGPKG_DEVS_FLASH_SYNTH + CYGPKG_DEVS_ETH_ECOSYNTH + CYGPKG_DEVS_WATCHDOG_SYNTH } description " The linux target provides the
--- a/packages/hal/synth/arch/current/ChangeLog +++ b/packages/hal/synth/arch/current/ChangeLog @@ -1,3 +1,13 @@ +2002-09-15 Bart Veer <bartv@ecoscentric.com> + + * include/hal_io.h + cdl/hal_synth.cdl + src/synth_entry.c, src/synth_intr.c, src/synth_diag.c, + src/synth_protocol.h + doc/* + host/* + Add support for I/O via an I/O auxiliary + 2002-08-04 Bart Veer <bartv@tymora.demon.co.uk> * include/hal_io.h: added argv/argv/environ definitions
--- a/packages/hal/synth/arch/current/cdl/hal_synth.cdl +++ b/packages/hal/synth/arch/current/cdl/hal_synth.cdl @@ -98,9 +98,29 @@ cdl_package CYGPKG_HAL_SYNTH { cdl_option CYGNUM_HAL_RTC_PERIOD { display "Real-time clock period" flavor data - calculated 10000 + calculated 10000 } } + # What to do when idling + cdl_option CYGIMP_HAL_IDLE_THREAD_SPIN { + display "Spin when idle" + default_value CYGIMP_IDLE_THREAD_YIELD + description " + By default, whenever the eCos application enters the idle thread + the synthetic target HAL will make a select() system call. Effectively + this causes the application to block until an interrupt occurs, + without consuming any cpu resources, as if the hardware supported + some sort of IDLE instruction. Usually this behaviour is desirable. + However it interferes with the emulation of some hardware. For + example the synthetic watchdog timer device can use consumed cpu time + rather than wallclock time to determine whether or not the watchdog + has triggered, and if the process is spending nearly all its time + blocked in select() then the watchdog will not trigger when it should. + There are also some kernel configurations which require that the idle + thread does not block." + } + requires { CYGIMP_IDLE_THREAD_YIELD implies CYGIMP_HAL_IDLE_THREAD_SPIN } + cdl_option CYGBLD_LINKER_SCRIPT { display "Linker script" flavor data
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--- a/packages/hal/synth/arch/current/doc/hal-synth-arch.html +++ b/packages/hal/synth/arch/current/doc/hal-synth-arch.html @@ -3,9 +3,6 @@ <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> -<!-- Distribution of substantively modified versions of this --> -<!-- document is prohibited without the explicit permission of the --> -<!-- copyright holder. --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> @@ -16,7 +13,7 @@ ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" -CONTENT="Modular DocBook HTML Stylesheet Version 1.64 +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="NEXT" TITLE="Overview" @@ -31,6 +28,7 @@ ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE +SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -52,6 +50,7 @@ ALIGN="right" VALIGN="bottom" ><A HREF="synth.html" +ACCESSKEY="N" >Next</A ></TD ></TR @@ -62,9 +61,7 @@ WIDTH="100%"></DIV ><DIV CLASS="PART" ><A -NAME="HAL-SYNTH-ARCH" -></A -><DIV +NAME="HAL-SYNTH-ARCH"><DIV CLASS="TITLEPAGE" ><H1 CLASS="TITLE" @@ -80,17 +77,47 @@ CLASS="TOC" ><A HREF="synth.html" >Overview</A -> — The eCos synthetic target</DT +> -- Overview</DT +><DT +><A +HREF="synth-install.html" +>Installation</A +> -- Preparing to use the synthetic target</DT +><DT +><A +HREF="synth-running.html" +>Running a Synthetic Target Application</A +> -- Arguments and configuration files</DT +><DT +><A +HREF="synth-gui.html" +>The I/O Auxiliary's User Interface</A +> -- Controlling the I/O Auxiliary</DT +><DT +><A +HREF="synth-console.html" +>The Console Device</A +> -- Show output from the eCos application</DT ><DT ><A HREF="synth-syscalls.html" >System Calls</A -> — Access Linux system facilities</DT +> -- Access Linux system facilities</DT +><DT +><A +HREF="synth-new-target.html" +>Writing New Devices - target</A +> -- extending the synthetic target, target-side</DT +><DT +><A +HREF="synth-new-host.html" +>Writing New Devices - host</A +> -- extending the synthetic target, host-side</DT ><DT ><A HREF="synth-porting.html" >Porting</A -> — The eCos synthetic target</DT +> -- Adding support for other hosts</DT ></DL ></DIV ></DIV @@ -100,6 +127,7 @@ CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -121,6 +149,7 @@ ALIGN="right" VALIGN="top" ><A HREF="synth.html" +ACCESSKEY="N" >Next</A ></TD ></TR
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new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-console.html @@ -0,0 +1,373 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>The Console Device</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="The I/O Auxiliary's User Interface" +HREF="synth-gui.html"><LINK +REL="NEXT" +TITLE="System Calls" +HREF="synth-syscalls.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth-gui.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-syscalls.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-CONSOLE">The Console Device</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN435" +></A +><H2 +>Name</H2 +>The console device -- Show output from the eCos application</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-DESCRIPTION" +></A +><H2 +>Description</H2 +><P +>The eCos application can generate text output in a variety of ways, +including calling <TT +CLASS="FUNCTION" +>printf</TT +> or +<TT +CLASS="FUNCTION" +>diag_printf</TT +>. When the I/O auxiliary is enabled +the eCos startup code will instantiate a console device to process all +such output. If operating in text mode the output will simply go to +standard output, or to a logfile if the <TT +CLASS="OPTION" +>-l</TT +> command +line option is specified. If operating in graphical mode the output +will go to the central text window, and optionally to a logfile as +well. In addition it is possible to control the appearance of the main +text via the target definition file, and to install extra filters for +certain types of text. + </P +><P +>It should be noted that the console device is line-oriented, not +character-oriented. This means that outputting partial lines is not +supported, and some functions such as <TT +CLASS="FUNCTION" +>fflush</TT +> and +<TT +CLASS="FUNCTION" +>setvbuf</TT +> will not operate as expected. This +limitation prevents much possible confusion when using filters to +control the appearance of the text window, and has some performance +benefits - especially when the eCos application generates a great deal +of output such as when tracing is enabled. For most applications this +is not a problem, but it is something that developers should be aware +of. + </P +><P +>The console device is output-only, it does not provide any support for +keyboard input. If the application requires keyboard input then that +should be handled by a separate eCos device package and matching +host-side code. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-INSTALL" +></A +><H2 +>Installation</H2 +><P +>The eCos side of the console device is implemented by the +architectural HAL itself, in the source file +<TT +CLASS="FILENAME" +>synth_diag.c</TT +>, rather than in a separate device +package. Similarly the host-side implementation, +<TT +CLASS="FUNCTION" +>console.tcl</TT +>, is part of the architectural HAL's +host-side support. It gets installed automatically alongside the I/O +auxiliary itself, so no separate installation procedure is required. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-TDF" +></A +><H2 +>Target Definition File</H2 +><P +>The <A +HREF="synth-running.html#SYNTH-RUNNING-TDF" +>target definition file</A +> +can contain a number of entries related to the console device. These +are all optional, they only control the appearance of text output. If +such control is desired then the relevant options should appear in the +body of a <B +CLASS="COMMAND" +>synth_device</B +> entry: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device console { + … +}</PRE +></TD +></TR +></TABLE +><P +>The first option is <B +CLASS="COMMAND" +>appearance</B +>, used to control the +appearance of any text generated by the eCos application that does not +match one of the installed filters. This option takes the same +argument as any other filter, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device console { + appearance -foreground white -background black + … +}</PRE +></TD +></TR +></TABLE +><P +>Any number of additional filters can be created with a +<B +CLASS="COMMAND" +>filter</B +> option, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device console { + … + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 + … +}</PRE +></TD +></TR +></TABLE +><P +>The first argument gives the new filter a name which will be used in +the <A +HREF="synth-gui.html#SYNTH-GUI-TEXT" +>filters dialog</A +>. Filter names +should be unique. The second argument is a Tcl regular expression. The +console support will match each line of eCos output against this +regular expression, and if a match is found then the filter will be +used for this line of text. The above example matches any line of +output that begins with <TT +CLASS="LITERAL" +>TRACE:</TT +>, which corresponds +to the eCos infrastructure's tracing facilities. The remaining options +control the desired appearance for matched text. If some eCos output +matches the regular expressions for several different filters then +only the first match will be used. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-TARGET-CONFIG" +></A +><H2 +>Target-side + Configuration Options</H2 +><P +>There are no target-side configuration options related to the console +device. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-ARGUMENTS" +></A +><H2 +>Command Line Arguments</H2 +><P +>The console device does not use any command-line arguments. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-CONSOLE-HOOKS" +></A +><H2 +>Hooks</H2 +><P +>The console device does not provide any hooks. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="AEN477" +></A +><H2 +>Additional Tcl Procedures</H2 +><P +>The console device does not provide any additional Tcl procedures that +can be used by other scripts. + </P +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth-gui.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-syscalls.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>The I/O Auxiliary's User Interface</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>System Calls</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-gui.html @@ -0,0 +1,738 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>The I/O Auxiliary's User Interface</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="Running a Synthetic Target Application" +HREF="synth-running.html"><LINK +REL="NEXT" +TITLE="The Console Device" +HREF="synth-console.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth-running.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-console.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-GUI">The I/O Auxiliary's User Interface</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN304" +></A +><H2 +>Name</H2 +>User Interface -- Controlling the I/O Auxiliary</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-GUI-DESCRIPTION" +></A +><H2 +>Description</H2 +><P +>The synthetic target auxiliary is designed to support both extensions +and user customization. Support for the desired devices is dynamically +loaded, and each device can extend the user interface. For example it +is possible for a device to add menu options, place new buttons on the +toolbar, create its own sub-window within the overall layout, or even +create entire new toplevel windows. These subwindows or toplevels +could show graphs of activity such as interrupts or packets being +transferred. They could also allow users to interact with the eCos +application, for example by showing a number of buttons which will be +mapped on to digital inputs in the eCos application. Different +applications will have their own I/O requirements, changing the +host-side support files that get loaded and that may modify the user +interface. The I/O auxiliary also reads in user configuration scripts +which can enhance the interface in the same way. Therefore the exact +user interface will depend on the user and on the eCos application +being run. However the overall layout is likely to remain the same. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN310"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="screen_main.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>The title bar identifies the window as belonging to an eCos synthetic +target application and lists both the application name and its process +id. The latter is especially useful if the application was started +directly from a shell prompt and the user now wants to attach a gdb +session. The window has a conventional menu bar with the usual +entries, plus a toolbar with buttons for common operations such as cut +and paste. Balloon help is supported. + </P +><P +>There is a central <A +HREF="synth-gui.html#SYNTH-GUI-TEXT" +>text window</A +>, +possibly surrounded by various sub-windows for various devices. For +example there could be a row of emulated LED's above the text window, +and monitors of ethernet traffic and interrupt activity on the right. +At the bottom of the window is a status line, including a small +animation that shows whether or not the eCos application is still +running. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-GUI-MENUS" +></A +><H2 +>Menus and the Toolbar</H2 +><P +>Usually there will be four menus on the menu bar: +<SPAN +CLASS="GUIMENU" +>File</SPAN +>, <SPAN +CLASS="GUIMENU" +>Edit</SPAN +>, +<SPAN +CLASS="GUIMENU" +>View</SPAN +> and <SPAN +CLASS="GUIMENU" +>Help</SPAN +>. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN324"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="menu_file.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>On the <SPAN +CLASS="GUIMENU" +>File</SPAN +> menu there are three entries related to +saving the current contents of the central text window. +<SPAN +CLASS="GUIMENUITEM" +>Save</SPAN +> is used to save the currently visible +contents of the text window. Any text that is hidden because of +filters will not be written to the savefile. If there has been a +previous <SPAN +CLASS="GUIMENUITEM" +>Save</SPAN +> or <SPAN +CLASS="GUIMENUITEM" +>Save +As</SPAN +> operation then the existing savefile will be re-used, +otherwise the user will be asked to select a suitable file. +<SPAN +CLASS="GUIMENUITEM" +>Save As</SPAN +> also saves just the currently +visible contents but will always prompt the user for a filename. +<SPAN +CLASS="GUIMENUITEM" +>Save All</SPAN +> can be used to save the full +contents of the text window, including any text that is currently +hidden. It will always prompt for a new filename, to avoid confusion +with partial savefiles. + </P +><P +>Usually the eCos application will be run from inside gdb or from a +shell prompt. Killing off the application while it is being debugged +in a gdb session is not a good idea, it would be better to use gdb's +own <B +CLASS="COMMAND" +>kill</B +> command. Alternatively the eCos +application itself can use the <TT +CLASS="FUNCTION" +>CYG_TEST_EXIT</TT +> or +<TT +CLASS="FILENAME" +>cyg_hal_sys_exit</TT +> functionality. However it is +possible to terminate the application from the I/O auxiliary using +<SPAN +CLASS="GUIMENUITEM" +>Kill eCos</SPAN +>. A clean shutdown will be +attempted, but that can fail if the application is currently halted +inside gdb or if it has crashed completely. As a last resort +<TT +CLASS="CONSTANT" +>SIGKILL</TT +> will be used. + </P +><P +>When operating in graphical mode the I/O auxiliary will normally +continue to run even after the eCos application has exited. This +allows the user to examine the last few lines of output, and perhaps +perform actions such as saving the output to a file. The +<SPAN +CLASS="GUIMENUITEM" +>Exit</SPAN +> menu item can be used to shut down the +auxiliary. Note that this behaviour can be changed with command line +arguments <A +HREF="synth-running.html#SYNTH-RUNNING-ARGUMENTS" +><TT +CLASS="OPTION" +>--exit</TT +></A +> and +<A +HREF="synth-running.html#SYNTH-RUNNING-ARGUMENTS" +><TT +CLASS="OPTION" +>--no-exit</TT +></A +>. + </P +><P +>If <SPAN +CLASS="GUIMENUITEM" +>Exit</SPAN +> is used while the eCos application +is still running then the I/O auxiliary will first attempt to +terminate the application cleanly, and then exit. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN349"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="menu_edit.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>The <SPAN +CLASS="GUIMENU" +>Edit</SPAN +> menu contains the usual entries for +text manipulation: <SPAN +CLASS="GUIMENUITEM" +>Cut</SPAN +>, +<SPAN +CLASS="GUIMENUITEM" +>Copy</SPAN +>, <SPAN +CLASS="GUIMENUITEM" +>Paste</SPAN +>, +<SPAN +CLASS="GUIMENUITEM" +>Clear</SPAN +> and <SPAN +CLASS="GUIMENUITEM" +>Select +All</SPAN +>. These all operate on the central text window. By +default this window cannot be edited so the cut, paste and clear +operations are disabled. If the user wants to edit the contents of the +text window then the <SPAN +CLASS="GUIMENUITEM" +>Read Only</SPAN +> checkbutton +should be toggled. + </P +><P +>The <SPAN +CLASS="GUIMENUITEM" +>Preferences</SPAN +> menu item brings up a +miscellaneous preferences dialog. One of the preferences relates to +online help: the I/O auxiliary does not currently have a built-in html +viewer; instead it will execute an external browser of some sort. With +the example settings shown, the I/O auxiliary will first attempt to +interact with an existing mozilla session. If that fails it will try +to run a new mozilla instance, or as a last result use the Gnome help +viewer. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN363"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="preferences.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>The <SPAN +CLASS="GUIMENU" +>View</SPAN +> menu contains the <SPAN +CLASS="GUIMENUITEM" +>System +Filters</SPAN +> entry, used to edit the settings for the current +<A +HREF="synth-gui.html#SYNTH-GUI-TEXT" +>filters</A +>. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN371"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="menu_view.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>The <SPAN +CLASS="GUIMENU" +>Help</SPAN +> menu can be used to activate online help +for eCos generally, for the synthetic target as a whole, and for +specific devices supported by the generic target. The Preferences +dialog can be used to select the browser that will be used. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN377"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="menu_help.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><DIV +CLASS="NOTE" +><BLOCKQUOTE +CLASS="NOTE" +><P +><B +>Note: </B +>At the time of writing there is no well-defined toplevel index file +for all eCos documentation. Hence the relevant menu item is disabled. +Documentation for the synthetic target and the supported devices +is stored as part of the package itself so can usually be found fairly +easily. It may be necessary to set the <TT +CLASS="ENVAR" +>ECOS_REPOSITORY</TT +> +environment variable. + </P +></BLOCKQUOTE +></DIV +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-GUI-TEXT" +></A +><H2 +>The Main Text Window</H2 +><P +>The central text window holds the console output from the eCos +application: the screen shot above shows DHCP initialization data from +the TCP/IP stack, and some output from the <TT +CLASS="FUNCTION" +>main</TT +> +thread at the bottom. Some devices can insert text of their own, for +example the ethernet device support can be configured to show details +of incoming and outgoing packets. Mixing the output from the eCos +application and the various devices can make it easier to understand +the order in which events occur. + </P +><P +>The appearance of text from different sources can be controlled by +means of filters, and it is also possible to hide some of the text. +For example, if tracing is enabled in the eCos configuration then the +trace output can be given its own colour scheme, making it stand out +from the rest of the output. In addition the trace output is generally +voluminous so it can be hidden by default, made visible only to find +out more about what was happening when a particular problem occurred. +Similarly the ethernet device support can output details of the +various packets being transferred, and using a different background +colour for this output again makes it easier to distinguish from +console output. + </P +><P +>The default appearance for most filters is controlled via the +<A +HREF="synth-running.html#SYNTH-RUNNING-TDF" +>target definition file</A +>. An +example entry might be: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> filter trace {^TRACE:.*} -foreground HotPink1 -hide 1</PRE +></TD +></TR +></TABLE +><P +>The various colours and the hide flag for each filter can be changed +at run-time, using the <SPAN +CLASS="GUIMENUITEM" +>System Filters</SPAN +> item +on the <SPAN +CLASS="GUIMENU" +>View</SPAN +> menu. This will bring up a dialog like +the following: + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN395"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="filters.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>It should be noted that the text window is line-oriented, not +character-oriented. If an eCos application sends a partial line of +text then that will remain buffered until a newline character is +received, rather than being displayed immediately. This avoids +confusion when there is concurrent output from several sources. + </P +><P +>By default the text window is read-only. This means it will not allow +cut, paste and clear operations, and keyboard input will be ignored. +The <SPAN +CLASS="GUIMENU" +>Edit</SPAN +> menu has a checkbutton <SPAN +CLASS="GUIMENUITEM" +>Read +Only</SPAN +> which can be toggled to allow write operations. For +example, a user could type in a reminder of what was happening at this +time, or paste in part of a gdb session. Such keyboard input does not +get forwarded to the eCos application: if the latter requires keyboard +input then that should happen via a separate keyboard device. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-GUI-LAYOUT" +></A +><H2 +>Positioning Optional Windows</H2 +><P +>Some devices may create their own subwindows, for example to monitor +ethernet traffic or to provide additional I/O facilities such as +emulated LED's or buttons. Usually the target definition file can be +used to control the <A +HREF="synth-gui.html#SYNTH-GUI-LAYOUT" +>layout</A +> of +these windows. This requires an understanding of the overall layout of +the display. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN407"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="layout.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>Subwindows are generally packed in one of eight frames surrounding the +central text window: <TT +CLASS="VARNAME" +>.main.nw</TT +>, +<TT +CLASS="VARNAME" +>.main.n</TT +>, <TT +CLASS="VARNAME" +>.main.ne</TT +>, +<TT +CLASS="VARNAME" +>.main.w</TT +>, <TT +CLASS="VARNAME" +>.main.e</TT +>, +<TT +CLASS="VARNAME" +>.main.sw</TT +>, <TT +CLASS="VARNAME" +>.main.s</TT +>, and +<TT +CLASS="VARNAME" +>.main.se</TT +>. To position a row of LED's above the text +window and towards the left, a target definition file could contain an +entry such as: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device led { + pack -in .main.n -side left + … +}</PRE +></TD +></TR +></TABLE +><P +>Similarly, to put a traffic monitor window on the right of the text +window would involve something like: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> … + monitor_pack -in .main.e -side bottom + …</PRE +></TD +></TR +></TABLE +><P +>Often it will be sufficient to specify a container frame and one of +<TT +CLASS="CONSTANT" +>left</TT +>, <TT +CLASS="CONSTANT" +>right</TT +>, +<TT +CLASS="CONSTANT" +>top</TT +> or <TT +CLASS="CONSTANT" +>bottom</TT +>. Full control +over the positioning requires an understanding of Tcl/Tk and in +particular the packing algorithm, and an appropriate reference work +should be consulted. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-GUI-GLOBAL-CONFIG" +></A +><H2 +>Global Settings</H2 +><DIV +CLASS="NOTE" +><BLOCKQUOTE +CLASS="NOTE" +><P +><B +>Note: </B +>This section still to be written - it should document the interaction +between X resources and ecosynth, and how users can control settings +such as the main foreground and background colours. + </P +></BLOCKQUOTE +></DIV +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth-running.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-console.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>Running a Synthetic Target Application</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>The Console Device</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-install.html @@ -0,0 +1,404 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Installation</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="Overview" +HREF="synth.html"><LINK +REL="NEXT" +TITLE="Running a Synthetic Target Application" +HREF="synth-running.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-running.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-INSTALL">Installation</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN45" +></A +><H2 +>Name</H2 +>Installation -- Preparing to use the synthetic target</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-INSTALL-HOST" +></A +><H2 +>Host-side Software</H2 +><P +>To get the full functionality of the synthetic target, users must +build and install the I/O auxiliary ecosynth and various support +files. It is possible to develop applications for the synthetic target +without the auxiliary, but only limited I/O facilities will be +available. The relevant code resides in the <TT +CLASS="FILENAME" +>host</TT +> subdirectory of the synthetic target +architectural HAL package, and building it involves the standard +<B +CLASS="COMMAND" +>configure</B +>, <B +CLASS="COMMAND" +>make</B +>, and +<B +CLASS="COMMAND" +>make install</B +> steps. + </P +><P +>There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the I/O auxiliary. in a +single build tree. This involves using the +<B +CLASS="COMMAND" +>configure</B +> script at the toplevel of the eCos +repository, which will automatically search the <TT +CLASS="FILENAME" +>packages</TT +> hierarchy for host-side +software. For more information on this, see the +<TT +CLASS="FILENAME" +>README.host</TT +> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target architectural HAL package then it will be +necessary to rerun the toplevel configure script: the search for +appropriate packages happens at configure time. + </P +><P +>The alternative is to build just the host-side for this package. +This involves creating a suitable build directory and running the +<B +CLASS="COMMAND" +>configure</B +> script. Note that building directly in +the source tree is not allowed. + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ cd <somewhere suitable> +$ mkdir synth_build +$ cd synth_build +$ <repo<>/packages/hal/synth/arch/<version>/host/configure <options> +$ make +$ make install</PRE +></TD +></TR +></TABLE +><P +>The code makes extensive use of Tcl/TK and requires version 8.3 or +later. This is checked by the <B +CLASS="COMMAND" +>configure</B +> script. By +default it will use the system's Tcl installation in <TT +CLASS="FILENAME" +>/usr</TT +>. If a different, more recent Tcl +installation should be used then its location can be specified using +the options <TT +CLASS="OPTION" +>--with-tcl=<path></TT +>, +<TT +CLASS="OPTION" +>--with-tcl-header=<path></TT +> and +<TT +CLASS="OPTION" +>--with-tcl-lib=<path></TT +>. For more information on these options +see the <TT +CLASS="FILENAME" +>README.host</TT +> file at the toplevel of the +eCos repository. + </P +><P +>Some users may also want to specify the install location using a +<TT +CLASS="OPTION" +>--prefix=<path></TT +> option. The default install +location is <TT +CLASS="FILENAME" +>/usr/local</TT +>. It is +essential that the <TT +CLASS="FILENAME" +>bin</TT +> +subdirectory of the install location is on the user's search +<TT +CLASS="ENVAR" +>PATH</TT +>, otherwise the eCos application will be unable to +locate and execute the I/O auxiliary ecosynth. + </P +><P +>Because ecosynth is run automatically by an eCos application rather +than explicitly by the user, it is not installed in the <TT +CLASS="FILENAME" +>bin</TT +> subdirectory itself. Instead it is +installed below <TT +CLASS="FILENAME" +>libexec</TT +>, +together with various support files such as images. At configure time +it is usually possible to specify an alternative location for +<TT +CLASS="FILENAME" +>libexec</TT +> using +<TT +CLASS="OPTION" +>--exec-prefix=<path></TT +> or +<TT +CLASS="OPTION" +>--libexecdir=<path></TT +>. These options should not +be used for this package because the eCos application is built +completely separately and does not know how the host-side was +configured. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-TOOLS" +></A +><H2 +>Toolchain</H2 +><P +>When developing eCos applications for a normal embedded target it is +necessary to use a suitable cross-compiler and related tools such as +the linker. Developing for the synthetic target is easier because you +can just use the standard GNU tools (gcc, g++, ld, …) which +were provided with your Linux distribution, or which you used to build +your own Linux setup. Any reasonably recent version of the tools, for +example gcc 2.96(Red Hat) as shipped with Red Hat Linux 7, should be +sufficient. + </P +><P +>There is one important limitation when using these tools: current gdb +will not support debugging of eCos threads on the synthetic target. As +far as gdb is concerned a synthetic target application is +indistinguishable from a normal Linux application, so it assumes that +any threads will be created by calls to the Linux +<TT +CLASS="FUNCTION" +>pthread_create</TT +> function provided by the C +library. Obviously this is not the case since the application is never +linked with that library. Therefore gdb never notices the eCos thread +mechanisms and assumes the application is single-threaded. Fixing this +is possible but would involve non-trivial changes to gdb. + </P +><P +>Theoretically it is possible to develop synthetic target applications +on, for example, a PC running Windows and then run the resulting +executables on another machine that runs Linux. This is rarely useful: +if a Linux machine is available then usually that machine will also be +used for building ecos and the application. However, if for some +reason it is necessary or desirable to build on another machine then +this requires a suitable cross-compiler and related tools. If the +application will be running on a typical PC with an x86 processor then +a suitable configure triplet would be +<TT +CLASS="USERINPUT" +><B +>i686-pc-linux-gnu</B +></TT +>. The installation +instructions for the various GNU tools should be consulted for further +information. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-HARDWARE" +></A +><H2 +>Hardware Preparation</H2 +><P +>Preparing a real embedded target for eCos development can be tricky. +Often the first step is to install suitable firmware, usually RedBoot. +This means creating and building a special configuration for eCos with +the RedBoot template, then somehow updating the target's flash chips +with the resulting RedBoot image. Typically it will also be necessary +to get a working serial connection, and possibly set up ethernet as +well. Although usually none of the individual steps are particularly +complicated, there are plenty of ways in which things can go wrong and +it can be hard to figure out what is actually happening. Of course +some board manufacturers make life easier for their developers by +shipping hardware with RedBoot preinstalled, but even then it is still +necessary to set up communication between host and target. + </P +><P +>None of this is applicable to the synthetic target. Instead you can +just build a normal eCos configuration, link your application with the +resulting libraries, and you end up with an executable that you can +run directly on your Linux machine or via gdb. A useful side effect of +this is that application development can start before any real +embedded hardware is actually available. + </P +><P +>Typically the memory map for a synthetic target application will be +set up such that there is a read-only ROM region containing all the +code and constant data, and a read-write RAM region for the data. The +default locations and sizes of these regions depend on the specific +platform being used for development. Note that the application always +executes out of ROM: on a real embedded target much of the development +would involve running RedBoot firmware there, with application code +and data loaded into RAM; usually this would change for the final +system; the firmware would be replaced by the eCos application itself, +configured for ROM bootstrap, and it would perform the appropriate +hardware initialization. Therefore the synthetic target actually +emulates the behaviour of a final system, not of a development +environment. In practice this is rarely significant, although having +the code in read-only memory can help catch some problems in +application code. + </P +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-running.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>Overview</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>Running a Synthetic Target Application</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-new-host.html @@ -0,0 +1,1734 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Writing New Devices - host</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="Writing New Devices - target" +HREF="synth-new-target.html"><LINK +REL="NEXT" +TITLE="Porting" +HREF="synth-porting.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth-new-target.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-porting.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-NEW-HOST">Writing New Devices - host</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN726" +></A +><H2 +>Name</H2 +>Writing New Devices -- extending the synthetic target, host-side</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-DESCRIPTION" +></A +><H2 +>Description</H2 +><P +>On the host-side adding a new device means writing a Tcl/Tk script +that will handle instantiation and subsequent requests from the +target-side. These scripts all run in the same full interpreter, +extended with various commands provided by the main I/O auxiliary +code, and running in an overall GUI framework. Some knowledge of +programming with Tcl/Tk is required to implement host-side device +support. + </P +><P +>Some devices can be implemented entirely using a Tcl/Tk script. For +example, if the final system will have some buttons then those can be +emulated in the synthetic target using a few Tk widgets. A simple +emulation could just have the right number of buttons in a row. A more +advanced emulation could organize the buttons with the right layout, +perhaps even matching the colour scheme, the shapes, and the relative +sizes. With other devices it may be necessary for the Tcl script to +interact with an external program, because the required functionality +cannot easily be accessed from a Tcl script. For example interacting +with a raw ethernet device involves some <TT +CLASS="FUNCTION" +>ioctl</TT +> +calls, which is easier to do in a C program. Therefore the +<TT +CLASS="FILENAME" +>ethernet.tcl</TT +> script which implements the +host-side ethernet support spawns a separate program +<TT +CLASS="FILENAME" +>rawether</TT +>, written in C, that performs the +low-level I/O. Raw ethernet access usually also requires root +privileges, and running a small program <TT +CLASS="FILENAME" +>rawether</TT +> +with such privileges is somewhat less of a security risk than the +whole eCos application, the I/O auxiliary, and various dynamically +loaded Tcl scripts. + </P +><P +>Because all scripts run in a single interpreter, some care has +to be taken to avoid accidental sharing of global variables. The best +way to avoid problems is to have each script create its own Tcl +namespace, so for example the <TT +CLASS="FILENAME" +>ethernet.tcl</TT +> script +creates a namespace <TT +CLASS="VARNAME" +>ethernet::</TT +> and all variables +and procedures reside in this namespace. Similarly the I/O auxiliary +itself makes use of a <TT +CLASS="VARNAME" +>synth::</TT +> namespace. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-BUILD" +></A +><H2 +>Building and Installation</H2 +><P +>When an eCos device driver or application code instantiates a device, +the I/O auxiliary will attempt to load a matching Tcl script. The +third argument to <TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +> +specifies the type of device, for example <TT +CLASS="LITERAL" +>ethernet</TT +>, +and the I/O auxiliary will append a <TT +CLASS="FILENAME" +>.tcl</TT +> suffix +and look for a script <TT +CLASS="FILENAME" +>ethernet.tcl</TT +>. + </P +><P +>If the device being instantiated is application-specific rather than +part of an eCos package, the I/O auxiliary will look first in the +current directory, then in <TT +CLASS="FILENAME" +>~/.ecos/synth</TT +>. If it is part of an eCos +package then the auxiliary will expect to find the Tcl script and any +support files below <TT +CLASS="FILENAME" +>libexec/ecos</TT +> in the install tree - note +that the same install tree must be used for the I/O auxiliary itself +and for any device driver support. The directory hierarchy below +<TT +CLASS="FILENAME" +>libexec/ecos</TT +> matches the +structure of the eCos repository, allowing multiple versions of a +package to be installed to allow for incompatible protocol changes. + </P +><P +>The preferred way to build host-side software is to use +<B +CLASS="COMMAND" +>autoconf</B +> and <B +CLASS="COMMAND" +>automake</B +>. Usually +this involves little more than copying the +<TT +CLASS="FILENAME" +>acinclude.m4</TT +>, <TT +CLASS="FILENAME" +>configure.in</TT +> +and <TT +CLASS="FILENAME" +>Makefile.am</TT +> files from an existing package, +for example the synthetic target ethernet driver, and then making +minor edits. In <TT +CLASS="FILENAME" +>acinclude.m4</TT +> it may be necessary +to adjust the path to the root of the repository. +<TT +CLASS="FILENAME" +>configure.in</TT +> may require a similar change, and +the <TT +CLASS="FUNCTION" +>AC_INIT</TT +> macro invocation will have to be +changed to match one of the files in the new package. A critical macro +in this file is <TT +CLASS="FILENAME" +>ECOS_PACKAGE_DIRS</TT +> which will set +up the correct install directory. <TT +CLASS="FILENAME" +>Makefile.am</TT +> may +require some more changes, for example to specify the data files that +should be installed (including the Tcl script). These files should +then be processed using <B +CLASS="COMMAND" +>aclocal</B +>, +<B +CLASS="COMMAND" +>autoconf</B +> and <B +CLASS="COMMAND" +>automake</B +> in that +order. Actually building the software then just involves +<B +CLASS="COMMAND" +>configure</B +>, <B +CLASS="COMMAND" +>make</B +> and +<B +CLASS="COMMAND" +>make install</B +>, as per the instructions in the +toplevel <TT +CLASS="FILENAME" +>README.host</TT +> file. + </P +><P +>To assist developers, if the environment variable +<TT +CLASS="ENVAR" +>ECOSYNTH_DEVEL</TT +> is set then a slightly different +algorithm is used for locating device Tcl scripts. Instead of looking +only in the install tree the I/O auxiliary will also look in the +source tree, and if the script there is more recent than the installed +version it will be used in preference. This allows developers to +modify the master copy without having to run <B +CLASS="COMMAND" +>make +install</B +> all the time. + </P +><P +>If a script needs to know where it has been installed it can examine +the Tcl variable <TT +CLASS="VARNAME" +>synth::device_install_dir</TT +> . This +variable gets updated whenever a script is loaded, so if the +value may be needed later it should be saved away in a device-specific +variable. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-INSTANTIATION" +></A +><H2 +>Instantiation</H2 +><P +>The I/O auxiliary will <B +CLASS="COMMAND" +>source</B +> the device-specific +Tcl script when the eCos application first attempts to instantiate a +device of that type. The script should return a procedure that will be +invoked to instantiate a device. + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>namespace eval ethernet { + … + proc instantiate { id instance data } { + … + return ethernet::handle_request + } +} +return ethernet::instantiate</PRE +></TD +></TR +></TABLE +><P +>The <TT +CLASS="VARNAME" +>id</TT +> argument is a unique identifier for this +device instance. It will also be supplied on subsequent calls to the +request handler, and will match the return value of +<TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +> on the target side. A +common use for this value is as an array index to support multiple +instances of this types of device. The <TT +CLASS="VARNAME" +>instance</TT +> and +<TT +CLASS="VARNAME" +>data</TT +> arguments match the corresponding arguments to +<TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +> on the target side, so +a typical value for <TT +CLASS="VARNAME" +>instance</TT +> would be +<TT +CLASS="LITERAL" +>eth0</TT +>, and <TT +CLASS="VARNAME" +>data</TT +> is used to pass +arbitrary initialization parameters from target to host. + </P +><P +>The actual work done by the instantiation procedure is obviously +device-specific. It may involve allocating an <A +HREF="synth-new-host.html#SYNTH-NEW-HOST-INTERRUPTS" +>interrupt vector</A +>, adding a +device-specific subwindow to the display, opening a real Linux device, +establishing a socket connection to some server, spawning a separate +process to handle the actual I/O, or a combination of some or all of +the above. + </P +><P +>If the device is successfully instantiated then the return value +should be a handler for subsequent I/O requests. Otherwise the return +value should be an empty string, and on the target-side the +<TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +> call will return +<TT +CLASS="LITERAL" +>-1</TT +>. The script is responsible for providing +<A +HREF="synth-new-host.html#SYNTH-NEW-HOST-OUTPUT" +>diagnostics</A +> explaining +why the device could not be instantiated. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-REQUESTS" +></A +><H2 +>Handling Requests</H2 +><P +>When the target-side calls +<TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +>, the I/O auxiliary will +end up calling the request handler for the appropriate device instance +returned during instantiation: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>namespace eval ethernet { + … + proc handle_request { id request arg1 arg2 txdata txlen max_rxlen } { + … + if { <some condition> } { + synth::send_reply <error code> 0 "" + return + } + … + synth::send_reply <reply code> $packet_len $packet + } + … +}</PRE +></TD +></TR +></TABLE +><P +>The <TT +CLASS="VARNAME" +>id</TT +> argument is the same device id that was +passed to the instantiate function, and is typically used as an array +index to access per-device data. The <TT +CLASS="VARNAME" +>request</TT +>, +<TT +CLASS="VARNAME" +>arg1</TT +>, <TT +CLASS="VARNAME" +>arg2</TT +>, and +<TT +CLASS="VARNAME" +>max_rxlen</TT +> are the same values that were passed to +<TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +> on the target-side, +although since this is a Tcl script obviously the numbers have been +converted to strings. The <TT +CLASS="VARNAME" +>txdata</TT +> buffer is raw data +as transmitted by the target, or an empty string if the I/O operation +does not involve any additional data. The Tcl procedures +<B +CLASS="COMMAND" +>binary scan</B +>, <B +CLASS="COMMAND" +>string index</B +> and +<B +CLASS="COMMAND" +>string range</B +> may be found especially useful when +manipulating this buffer. <TT +CLASS="VARNAME" +>txlen</TT +> is provided for +convenience, although <B +CLASS="COMMAND" +>string length $txdata</B +> would +give the same information. + </P +><P +>The code for actually processing the request is of course device +specific. If the target does not expect a reply then the request +handler should just return when finished. If a reply is expected then +there should be a call to <B +CLASS="COMMAND" +>synth::send_reply</B +>. The +first argument is the reply code, and will be turned into a 32-bit +integer on the target side. The second argument specifies the length +of the reply data, and the third argument is the reply data itself. +For some devices the Tcl procedure <B +CLASS="COMMAND" +>binary format</B +> +may prove useful. If the reply involves just a code and no additional +data, the second and third arguments should be <TT +CLASS="LITERAL" +>0</TT +> +and an empty string respectively. + </P +><P +>Attempts to send a reply when none is expected, fail to send a reply +when one is expected, or send a reply that is larger than the +target-side expects, will all be detected by the I/O auxiliary and +result in run-time error messages. + </P +><P +>It is not possible for the host-side code to send unsolicited messages +to the target. If host-side code needs attention from the target, for +example because some I/O operation has completed, then an interrupt +should be raised. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-INTERRUPTS" +></A +><H2 +>Interrupts</H2 +><P +>The I/O auxiliary provides a number of procedures for interrupt +handling. + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::interrupt_allocate <name> +synth::interrupt_get_max +synth::interrupt_get_devicename <vector> +synth::interrupt_raise <vector></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::interrupt_allocate</B +> is normally called during +device instantiation, and returns the next free interrupt vector. This +can be passed on to the target-side device driver in response to a +suitable request, and it can then install an interrupt handler on that +vector. Interrupt vector <TT +CLASS="LITERAL" +>0</TT +> is used within the +target-side code for the real-time clock, so the allocated vectors +will start at <TT +CLASS="LITERAL" +>1</TT +>. The argument identifies the +device, for example <TT +CLASS="LITERAL" +>eth0</TT +>. This is not actually used +internally, but can be accessed by user-initialization scripts that +provide some sort of interrupt monitoring facility (typically via the +<TT +CLASS="LITERAL" +>interrupt</TT +> <A +HREF="synth-new-host.html#SYNTH-NEW-HOST-HOOKS" +>hook</A +>). It is possible for a +single device to allocate multiple interrupt vectors, but the +synthetic target supports a maximum of 32 such vectors. + </P +><P +><B +CLASS="COMMAND" +>synth::interrupt_get_max</B +> returns the highest +interrupt vector that has been allocated, or <TT +CLASS="LITERAL" +>0</TT +> if +there have been no calls to +<B +CLASS="COMMAND" +>synth::interrupt_allocate</B +>. +<B +CLASS="COMMAND" +>synth::interrupt_get_devicename</B +> returns the string +that was passed to <B +CLASS="COMMAND" +>synth::interrupt_allocate</B +> when +the vector was allocated. + </P +><P +><B +CLASS="COMMAND" +>synth::interrupt_raise</B +> can be called any time after +initialization. The argument should be the vector returned by +<B +CLASS="COMMAND" +>synth::interrupt_allocate</B +> for this device. It will +activate the normal eCos interrupt handling mechanism so, subject to +interrupts being enabled and this particular interrupt not being +masked out, the appropriate ISR will run. + </P +><DIV +CLASS="NOTE" +><BLOCKQUOTE +CLASS="NOTE" +><P +><B +>Note: </B +>At this time it is not possible for a device to allocate a specific +interrupt vector. The order in which interrupt vectors are assigned to +devices effectively depends on the order in which the eCos devices get +initialized, and that may change if the eCos application is rebuilt. A +future extension may allow devices to allocate specific vectors, thus +making things more deterministic. However that will introduce new +problems, in particular the code will have to start worrying about +requests for vectors that have already been allocated. + </P +></BLOCKQUOTE +></DIV +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-ARGS" +></A +><H2 +>Flags and Command Line Arguments</H2 +><P +>The generic I/O auxiliary code will process the standard command line +arguments, and will set various flag variables accordingly. Some of +these should be checked by device-specific scripts. + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="VARNAME" +>synth::flag_gui</TT +></DT +><DD +><P +>This is set when the I/O auxiliary is operating in graphical mode +rather than text mode. Some functionality such as filters and the GUI +layout are only available in graphical mode. + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> if { $synth::flag_gui } { + … + }</PRE +></TD +></TR +></TABLE +></DD +><DT +><TT +CLASS="VARNAME" +>synth::flag_verbose</TT +></DT +><DD +><P +>The user has requested additional information during startup. Each +device driver can decide how much additional information, if any, +should be produced. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>synth::flag_keep_going</TT +></DT +><DD +><P +>The user has specified <TT +CLASS="OPTION" +>-k</TT +> or +<TT +CLASS="OPTION" +>--keep-going</TT +>, so even if an error occurs the I/O +auxiliary and the various device driver scripts should continue running +if at all possible. Diagnostics should still be generated. + </P +></DD +></DL +></DIV +><P +>Some scripts may want to support additional command line arguments. +This facility should be used with care since there is no way to +prevent two different scripts from trying to use the same argument. +The following Tcl procedures are available: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::argv_defined <name> +synth::argv_get_value <name></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::argv_defined</B +> returns a boolean to indicate +whether or not a particular argument is present. If the argument is +the name part of a name/value pair, an <TT +CLASS="LITERAL" +>=</TT +> character +should be appended. Typical uses might be: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> if { [synth::argv_defined "-o13"] } { + … + } + + if { [synth::argv_defined "-mark="] } { + … + }</PRE +></TD +></TR +></TABLE +><P +>The first call checks for a flag <TT +CLASS="LITERAL" +>-o13</TT +> or +<TT +CLASS="LITERAL" +>--o13</TT +> - the code treats options with single and +double hyphens interchangeably. The second call checks for an argument +of the form <TT +CLASS="LITERAL" +>-mark=<value></TT +> or a pair of +arguments <TT +CLASS="LITERAL" +>-mark <value></TT +>. The value part of a +name/value pair can be obtained using +<B +CLASS="COMMAND" +>synth::argv_get_value</B +>; + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> variable speed 1 + if { [synth::argv_defined "-mark="] } { + set mark [synth::argv_get_value "-mark="] + if { ![string is integer $mark] || ($mark < 1) || ($mark > 9) } { + <issue diagnostic> + } else { + set speed $mark + } + }</PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::argv_get_value</B +> should only be used after a +successful call to <B +CLASS="COMMAND" +>synth::argv_defined</B +>. +At present there is no support for some advanced forms of command line +argument processing. For example it is not possible to repeat a +certain option such as <TT +CLASS="OPTION" +>-v</TT +> or +<TT +CLASS="OPTION" +>--verbose</TT +>, with each occurrence increasing the level +of verbosity. + </P +><P +>If a script is going to have its own set of command-line arguments +then it should give appropriate details if the user specifies +<TT +CLASS="OPTION" +>--help</TT +>. This involves a hook function: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>namespace eval my_device { + proc help_hook { } { + puts " -o13 : activate the omega 13 device" + puts " -mark <speed> : set speed. Valid values are 1 to 9." + } + + synth::hook_add "help" my_device::help_hook +}</PRE +></TD +></TR +></TABLE +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-TDF" +></A +><H2 +>The Target Definition File</H2 +><P +>Most device scripts will want to check entries in the target +definition file for run-time configuration information. The Tcl +procedures for this are as follows: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::tdf_has_device <name> +synth::tdf_get_devices +synth::tdf_has_option <devname> <option> +synth::tdf_get_option <devname> <option> +synth::tdf_get_options <devname> <option> +synth::tdf_get_all_options <devname></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::tdf_has_device</B +> can be used to check whether +or not the target definition file had an entry +<TT +CLASS="LITERAL" +>synth_device <name></TT +>. Usually the name +will match the type of device, so the +<TT +CLASS="FILENAME" +>console.tcl</TT +> script will look for a target +definition file entry <TT +CLASS="LITERAL" +>console</TT +>. +<B +CLASS="COMMAND" +>synth::tdf_get_devices</B +> returns a list of all +device entries in the target definition file. + </P +><P +>Once it is known that the target definition file has an entry for a +certain device, it is possible to check for options within the entry. +<B +CLASS="COMMAND" +>synth::tdf_has_option</B +> just checks for the presence, +returning a boolean: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> if { [synth::tdf_has_option "console" "appearance"] } { + … + }</PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::tdf_get_option</B +> returns a list of all the +arguments for a given option. For example, if the target definition +file contains an entry: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device console { + appearance -foreground white -background black + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 + filter xyzzy {.*xyzzy.*} -foreground PapayaWhip +}</PRE +></TD +></TR +></TABLE +><P +>A call +<B +CLASS="COMMAND" +>synth::tdf_get_option console appearance</B +> +will return the list <TT +CLASS="LITERAL" +>{-foreground white -background +black}</TT +>. This list can be manipulated using standard Tcl routines +such as <B +CLASS="COMMAND" +>llength</B +> and <B +CLASS="COMMAND" +>lindex</B +>. Some +options can occur multiple times in one entry, for example +<TT +CLASS="OPTION" +>filter</TT +> in the <TT +CLASS="LITERAL" +>console</TT +> entry. +<B +CLASS="COMMAND" +>synth::tdf_get_options</B +> returns a list of lists, +with one entry for each option occurrence. +<B +CLASS="COMMAND" +>synth::tdf_get_all_options</B +> returns a list of lists +of all options. This time each entry will include the option name as +well. + </P +><P +>The I/O auxiliary will not issue warnings about entries in the target +definition file for devices which were not loaded, unless the +<TT +CLASS="OPTION" +>-v</TT +> or <TT +CLASS="OPTION" +>--verbose</TT +> command line +argument was used. This makes it easier to use a single target +definition file for different applications. However the auxiliary will +issue warnings about options within an entry that were ignored, +because often these indicate a typing mistake of some sort. Hence a +script should always call <B +CLASS="COMMAND" +>synth::tdf_has_option</B +>, +<B +CLASS="COMMAND" +>synth:;tdf_get_option</B +> or +<B +CLASS="COMMAND" +>synth::tdf_get_options</B +> for all valid options, even +if some of the options preclude the use of others. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-HOOKS" +></A +><H2 +>Hooks</H2 +><P +>Some scripts may want to take action when particular events occur, for +example when the eCos application has exited and there is no need for +further I/O. This is supported using hooks: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>namespace eval my_device { + … + proc handle_ecos_exit { arg_list } { + … + } + synth::hook_add "ecos_exit" my_device::handle_ecos_exit +}</PRE +></TD +></TR +></TABLE +><P +>It is possible for device scripts to add their own hooks and call all +functions registered for those hooks. A typical use for this is by +user initialization scripts that want to monitor some types of I/O. +The available Tcl procedures for manipulating hooks are: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::hook_define <name> +synth::hook_defined <name> +synth::hook_add <name> <function> +synth::hook_call <name> <args></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::hook_define</B +> creates a new hook with the +specified name. This hook must not already exist. +<B +CLASS="COMMAND" +>synth::hook_defined</B +> can be used to check for the +existence of a hook. <B +CLASS="COMMAND" +>synth::hook_add</B +> allows other +scripts to register a callback function for this hook, and +<B +CLASS="COMMAND" +>synth::hook_call</B +> allows the owner script to invoke +all such callback functions. A hook must already be defined before a +callback can be attached. Therefore typically device scripts will only +use standard hooks and their own hooks, not hooks created by some +other device, because the order of device initialization is not +sufficiently defined. User scripts run from +<TT +CLASS="FILENAME" +>mainrc.tcl</TT +> can use any hooks that have been +defined. + </P +><P +><B +CLASS="COMMAND" +>synth::hook_call</B +> takes an arbitrary list of +arguments, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> synth::hook_call "ethernet_rx" "eth0" $packet</PRE +></TD +></TR +></TABLE +><P +>The callback function will always be invoked with a single argument, +a list of the arguments that were passed to +<B +CLASS="COMMAND" +>synth::hook_call</B +>: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> proc rx_callback { arg_list } { + set device [lindex $arg_list 0] + set packet [lindex $arg_list 1] + }</PRE +></TD +></TR +></TABLE +><P +>Although it might seem more appropriate to use Tcl's +<B +CLASS="COMMAND" +>eval</B +> procedure and have the callback functions +invoked with the right number of arguments rather than a single list, +that would cause serious problems if any of the data contained special +characters such as <TT +CLASS="LITERAL" +>[</TT +> or <TT +CLASS="LITERAL" +>$</TT +>. The +current implementation of hooks avoids such problems, at the cost of +minor inconvenience when writing callbacks. + </P +><P +>A number of hooks are defined as standard. Some devices will add +additional hooks, and the device-specific documentation should be +consulted for those. User scripts can add their own hooks if desired. + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="LITERAL" +>exit</TT +></DT +><DD +><P +>This hook is called just before the I/O auxiliary exits. Hence it +provides much the same functionality as <TT +CLASS="FUNCTION" +>atexit</TT +> in +C programs. The argument list passed to the callback function will be +empty. + </P +></DD +><DT +><TT +CLASS="LITERAL" +>ecos_exit</TT +></DT +><DD +><P +>This hook is called when the eCos application has exited. It is used +mainly to shut down I/O operations: if the application is no longer +running then there is no point in raising interrupts or storing +incoming packets. The callback argument list will be empty. + </P +></DD +><DT +><TT +CLASS="LITERAL" +>ecos_initialized</TT +></DT +><DD +><P +>The synthetic target HAL will send a request to the I/O auxiliary once +the static constructors have been run. All devices should now have been +instantiated. A script could now check how many instances there are of +a given type of device, for example ethernet devices, and create a +little monitor window showing traffic on all the devices. The +<TT +CLASS="LITERAL" +>ecos_initialized</TT +> callbacks will be run just before +the user's <TT +CLASS="FILENAME" +>mainrc.tcl</TT +> script. The callback +argument list will be empty. + </P +></DD +><DT +><TT +CLASS="LITERAL" +>help</TT +></DT +><DD +><P +>This hook is also invoked once static constructors have been run, but +only if the user specified <TT +CLASS="OPTION" +>-h</TT +> or +<TT +CLASS="OPTION" +>--help</TT +>. Any scripts that add their own command line +arguments should add a callback to this hook which outputs details of +the additional arguments. The callback argument list will be empty. + </P +></DD +><DT +><TT +CLASS="LITERAL" +>interrupt</TT +></DT +><DD +><P +>Whenever a device calls <B +CLASS="COMMAND" +>synth::interrupt_raise</B +> the +<TT +CLASS="LITERAL" +>interrupt</TT +> hook will be called with a single +argument, the interrupt vector. The main use for this is to allow +user scripts to monitor interrupt traffic. + </P +></DD +></DL +></DIV +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-OUTPUT" +></A +><H2 +>Output and Filters</H2 +><P +>Scripts can use conventional facilities for sending text output to the +user, for example calling <B +CLASS="COMMAND" +>puts</B +> or directly +manipulating the central text widget +<TT +CLASS="VARNAME" +>.main.centre.text</TT +>. However in nearly all cases it +is better to use output facilities provided by the I/O auxiliary +itself: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::report <msg> +synth::report_warning <msg> +synth::report_error <msg> +synth::internal_error <msg> +synth::output <msg> <filter></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::report</B +> is intended for messages related to +the operation of the I/O auxiliary itself, especially additional +output resulting from <TT +CLASS="OPTION" +>-v</TT +> or +<TT +CLASS="OPTION" +>--verbose</TT +>. If running in text mode the output will go +to standard output. If running in graphical mode the output will go to +the central text window. In both modes, use of <TT +CLASS="OPTION" +>-l</TT +> or +<TT +CLASS="OPTION" +>--logfile</TT +> will modify the behaviour. + </P +><P +><B +CLASS="COMMAND" +>synth::report_warning</B +>, +<B +CLASS="COMMAND" +>synth::report_error</B +> and +<B +CLASS="COMMAND" +>synth::internal_error</B +> have the obvious meaning, +including prepending strings such as <TT +CLASS="LITERAL" +>Warning:</TT +> and +<TT +CLASS="LITERAL" +>Error:</TT +>. When the eCos application informs the I/O +auxiliary that all static constructors have run, if at that point +there have been any calls to <B +CLASS="COMMAND" +>synth::error</B +> then the +I/O auxiliary will exit. This can be suppressed with command line +arguments <TT +CLASS="OPTION" +>-k</TT +> or <TT +CLASS="OPTION" +>--keep-going</TT +>. +<B +CLASS="COMMAND" +>synth::internal_error</B +> will output some information +about the current state of the I/O auxiliary and then exit +immediately. Of course it should never be necessary to call this +function. + </P +><P +><B +CLASS="COMMAND" +>synth::output</B +> is the main routine for outputting +text. The second argument identifies a filter. If running in text mode +the filter is ignored, but if running in graphical mode the filter can +be used to control the appearance of this output. A typical use would +be: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> synth::output $line "console"</PRE +></TD +></TR +></TABLE +><P +>This outputs a single line of text using the +<TT +CLASS="LITERAL" +>console</TT +> filter. If running in graphical mode the +default appearance of this text can be modified with the +<TT +CLASS="OPTION" +>appearance</TT +> option in the +<B +CLASS="COMMAND" +>synth_device console</B +> entry of the target +definition file. The <SPAN +CLASS="GUIMENUITEM" +>System filters</SPAN +> menu +option can be used to change the appearance at run-time. + </P +><P +>Filters should be created before they are used. The procedures +available for this are: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::filter_exists <name> +synth::filter_get_list +synth::filter_add <name> [options] +synth::filter_parse_options <options> <parsed_options> <message> +synth::filter_add_parsed <name> <parsed_options></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::filter_exists</B +> can be used to check whether +or not a particular filter already exists: creating two filters with +the same name is not allowed. +<B +CLASS="COMMAND" +>synth::filter_get_list</B +> returns a list of the +current known filters. <B +CLASS="COMMAND" +>synth::filter_add</B +> can be +used to create a new filter. The first argument names the new filter, +and the remaining arguments control the initial appearance. A typical +use might be: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> synth::filter_add "my_device_tx" -foreground yellow -hide 1</PRE +></TD +></TR +></TABLE +><P +>It is assumed that the supplied arguments are valid, which typically +means that they are hard-wired in the script. If instead the data +comes out of a configuration file and hence may be invalid, the +I/O auxiliary provides a parsing utility. Typical usage would be: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> array set parsed_options [list] + set message "" + if { ![synth::filter_parse_options $console_appearance parsed_options message] } { + synth::report_error \ + "Invalid entry in target definition file $synth::target_definition\ + \n synth_device \"console\", entry \"appearance\"\n$message" + } else { + synth::filter_add_parsed "console" parsed_options + }</PRE +></TD +></TR +></TABLE +><P +>On success <TT +CLASS="VARNAME" +>parsed_options</TT +> will be updated with an +internal representation of the desired appearance, which can then be +used in a call to <B +CLASS="COMMAND" +>synth::filter_add_parsed</B +>. On +failure <TT +CLASS="VARNAME" +>message</TT +> will be updated with details of the +parsing error that occurred. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-HOST-GUI" +></A +><H2 +>The Graphical Interface</H2 +><P +>When the I/O auxiliary is running in graphical mode, many scripts will +want to update the user interface in some way. This may be as simple +as adding another entry to the help menu for the device, or adding a +new button to the toolbar. It may also involve adding new subwindows, +or even creating entire new toplevel windows. These may be simple +monitor windows, displaying additional information about what is going +on in the system in a graphical format. Alternatively they may emulate +actual I/O operations, for example button widgets could be used to +emulate real physical buttons. + </P +><P +>The I/O auxiliary does not provide many procedures related to the +graphical interface. Instead it is expected that scripts will just +update the widget hierarchy directly. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN1018"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="layout.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P +>So adding a new item to the <SPAN +CLASS="GUIMENU" +>Help</SPAN +> menu involves a +<B +CLASS="COMMAND" +>.menubar.help add</B +> operation with suitable +arguments. Adding a new button to the toolbar involves creating a +child window in <TT +CLASS="VARNAME" +>.toolbar</TT +> and packing it +appropriately. Scripts can create their own subwindows and then pack +it into one of <TT +CLASS="VARNAME" +>.main.nw</TT +>, +<TT +CLASS="VARNAME" +>.main.n</TT +>, <TT +CLASS="VARNAME" +>.main.ne</TT +>, +<TT +CLASS="VARNAME" +>.main.w</TT +>, <TT +CLASS="VARNAME" +>.main.e</TT +>, +<TT +CLASS="VARNAME" +>.main.sw</TT +>, <TT +CLASS="VARNAME" +>.main.s</TT +> or +<TT +CLASS="VARNAME" +>.main.se</TT +>. Normally the user should be allowed to +<A +HREF="synth-gui.html#SYNTH-GUI-LAYOUT" +>control</A +> this via the target +definition file. The central window <TT +CLASS="VARNAME" +>.main.centre</TT +> +should normally be left alone by other scripts since it gets used for +text output. + </P +><P +>The following graphics-related utilities may be found useful: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth::load_image <image name> <filename> +synth::register_ballon_help <widget> <message> +synth::handle_help <URL></PRE +></TD +></TR +></TABLE +><P +><B +CLASS="COMMAND" +>synth::load_image</B +> can be used to add a new image to +the current interpreter. If the specified file has a +<TT +CLASS="FILENAME" +>.xbm</TT +> extension then the image will be a +monochrome bitmap, otherwise it will be a colour image of some sort. +A boolean will be returned to indicate success or failure, and +suitable diagnostics will be generated if necessary. + </P +><P +><B +CLASS="COMMAND" +>synth::register_balloon_help</B +> provides balloon help +for a specific widget, usually a button on the toolbar. + </P +><P +><B +CLASS="COMMAND" +>synth::handle_help</B +> is a utility routine that can be +installed as the command for displaying online help, for example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> .menubar.help add command -label "my device" -command \ + [list synth::handle_help "file://$path"]</PRE +></TD +></TR +></TABLE +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth-new-target.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-porting.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>Writing New Devices - target</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>Porting</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-new-target.html @@ -0,0 +1,823 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Writing New Devices - target</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="System Calls" +HREF="synth-syscalls.html"><LINK +REL="NEXT" +TITLE="Writing New Devices - host" +HREF="synth-new-host.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth-syscalls.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-new-host.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-NEW-TARGET">Writing New Devices - target</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN524" +></A +><H2 +>Name</H2 +>Writing New Devices -- extending the synthetic target, target-side</DIV +><DIV +CLASS="REFSYNOPSISDIV" +><A +NAME="AEN527"><H2 +>Synopsis</H2 +><DIV +CLASS="FUNCSYNOPSIS" +><A +NAME="AEN528"><P +></P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="FUNCSYNOPSISINFO" +>#include <cyg/hal/hal_io.h + </PRE +></TD +></TR +></TABLE +><P +><CODE +><CODE +CLASS="FUNCDEF" +>int synth_auxiliary_instantiate</CODE +>(const char* package, const char* version, const char* device, const char* instance, const char* data);</CODE +></P +><P +><CODE +><CODE +CLASS="FUNCDEF" +>void synth_auxiliary_xchgmsg</CODE +>(int device_id, int request, int arg1, int arg2, const unsigned char* txdata, int txlen, int* reply, unsigned char* rxdata, int* rxlen, int max_rxlen);</CODE +></P +><P +></P +></DIV +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-TARGET-DESCRIPTION" +></A +><H2 +>Description</H2 +><P +>In some ways writing a device driver for the synthetic target is very +similar to writing one for a real target. Obviously it has to provide +the standard interface for that class of device, so for example an +ethernet device has to provide <TT +CLASS="FUNCTION" +>can_send</TT +>, +<TT +CLASS="FUNCTION" +>send</TT +>, <TT +CLASS="FUNCTION" +>recv</TT +> and similar +functions. Many devices will involve interrupts, so the driver +contains ISR and DSR functions and will call +<TT +CLASS="FUNCTION" +>cyg_drv_interrupt_create</TT +>, +<TT +CLASS="FUNCTION" +>cyg_drv_interrupt_acknowledge</TT +>, and related +functions. + </P +><P +>In other ways writing a device driver for the synthetic target is very +different. Usually the driver will not have any direct access to the +underlying hardware. In fact for some devices the I/O may not involve +real hardware, instead everything is emulated by widgets on the +graphical display. Therefore the driver cannot just peek and poke +device registers, instead it must interact with host-side code by +exchanging message. The synthetic target HAL provides a function +<TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +> for this purpose. + </P +><P +>Initialization of a synthetic target device driver is also very +different. On real targets the device hardware already exists when the +driver's initialization routine runs. On the synthetic target it is +first necessary to instantiate the device inside the I/O auxiliary, by +a call to <TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +>. That +function performs a special message exchange with the I/O auxiliary, +causing it to load a Tcl script for the desired type of device and run +an instantiation procedure within that script. + </P +><P +>Use of the I/O auxiliary is optional: if the user does not specify +<TT +CLASS="OPTION" +>--io</TT +> on the command line then the auxiliary will not +be started and hence most I/O operations will not be possible. Device +drivers should allow for this possibility, for example by just +discarding any data that gets written. The HAL exports a flag +<TT +CLASS="VARNAME" +>synth_auxiliary_running</TT +> which should be checked. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-TARGET-INSTANTIATE" +></A +><H2 +>Instantiating a Device</H2 +><P +>Device instantiation should happen during the C++ prioritized static +constructor phase of system initialization, before control switches to +<TT +CLASS="FUNCTION" +>cyg_user_start</TT +> and general application code. This +ensures that there is a clearly defined point at which the I/O +auxiliary knows that all required devices have been loaded. It can +then perform various consistency checks and clean-ups, run the user's +<TT +CLASS="FILENAME" +>mainrc.tcl</TT +> script, and make the main window +visible. + </P +><P +>For standard devices generic eCos I/O code will call the device +initialization routines at the right time, iterating through the +<TT +CLASS="VARNAME" +>DEVTAB</TT +> table in a static constructor. The same +holds for network devices and file systems. For more custom devices +code like the following can be used: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>#include <cyg/infra/cyg_type.h> +class mydev_init { + public: + mydev_init() { + … + } +}; +static mydev_init mydev_init_object CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO);</PRE +></TD +></TR +></TABLE +><P +>Some care has to be taken because the object +<TT +CLASS="VARNAME" +>mydev_init_object</TT +> will typically not be referenced +by other code, and hence may get eliminated at link-time. If the code +is part of an eCos package then problems can be avoided by putting the +relevant file in <TT +CLASS="FILENAME" +>libextras.a</TT +>: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>cdl_package CYGPKG_DEVS_MINE { + … + compile -library=libextras.a init.cxx +}</PRE +></TD +></TR +></TABLE +><P +>For devices inside application code the same can be achieved by +linking the relevant module as a <TT +CLASS="FILENAME" +>.o</TT +> file rather +than putting it in a <TT +CLASS="FILENAME" +>.a</TT +> library. + </P +><P +>In the device initialization routine the main operation is a call to +<TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +>. This takes five +arguments, all of which should be strings: + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="VARNAME" +>package</TT +></DT +><DD +><P +>For device drivers which are eCos packages this should be a directory +path relative to the eCos repository, for example +<TT +CLASS="LITERAL" +>devs/eth/synth/ecosynth</TT +>. This will allow the I/O +auxiliary to find the various host-side support files for this package +within the install tree. If the device is application-specific and not +part of an eCos package then a NULL pointer can be used, causing the +I/O auxiliary to search for the support files in the current directory +and then in <TT +CLASS="FILENAME" +>~/.ecos/synth</TT +> +instead. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>version</TT +></DT +><DD +><P +>For eCos packages this argument should be the version of the package +that is being used, for example <TT +CLASS="LITERAL" +>current</TT +>. A simple +way to get this version is to use the +<TT +CLASS="FUNCTION" +>SYNTH_MAKESTRING</TT +> macro on the package name. +If the device is application-specific then a NULL pointer should be +used. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>device</TT +></DT +><DD +><P +>This argument specifies the type of device being instantiated, for +example <TT +CLASS="LITERAL" +>ethernet</TT +>. More specifically the I/O +auxiliary will append a <TT +CLASS="FILENAME" +>.tcl</TT +> suffix, giving +the name of a Tcl script that will handle all I/O requests for the +device. If the application requires several instances of a type +of device then the script will only be loaded once, but the script +will contain an instantiation procedure that will be called for each +device instance. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>instance</TT +></DT +><DD +><P +>If it is possible to have multiple instances of a device then this +argument identifies the particular instance, for example +<TT +CLASS="LITERAL" +>eth0</TT +> or <TT +CLASS="LITERAL" +>eth1</TT +>. Otherwise a NULL +pointer can be used. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>data</TT +></DT +><DD +><P +>This argument can be used to pass additional initialization data from +eCos to the host-side support. This is useful for devices where eCos +configury must control certain aspects of the device, rather than +host-side configury such as the target definition file, because eCos +has compile-time dependencies on some or all of the relevant options. +An example might be an emulated frame buffer where eCos has been +statically configured for a particular screen size, orientation and +depth. There is no fixed format for this string, it will be +interpreted only by the device-specific host-side Tcl script. However +the string length should be limited to a couple of hundred bytes to +avoid possible buffer overflow problems. + </P +></DD +></DL +></DIV +><P +>Typical usage would look like: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +> if (!synth_auxiliary_running) { + return; + } + id = synth_auxiliary_instantiate("devs/eth/synth/ecosynth", + SYNTH_MAKESTRING(CYGPKG_DEVS_ETH_ECOSYNTH), + "ethernet", + "eth0", + (const char*) 0);</PRE +></TD +></TR +></TABLE +><P +>The return value will be a device identifier which can be used for +subsequent calls to <TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +>. If +the device could not be instantiated then <TT +CLASS="LITERAL" +>-1</TT +> will +be returned. It is the responsibility of the host-side software to +issue suitable diagnostics explaining what went wrong, so normally the +target-side code should fail silently. + </P +><P +>Once the desired device has been instantiated, often it will be +necessary to do some additional initialization by a message exchange. +For example an ethernet device might need information from the +host-side about the MAC address, the <A +HREF="synth-new-target.html#SYNTH-NEW-TARGET-INTERRUPTS" +>interrupt vector</A +>, and +whether or not multicasting is supported. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-TARGET-XCHGMSG" +></A +><H2 +>Communicating with a Device</H2 +><P +>Once a device has been instantiated it is possible to perform I/O by +sending messages to the appropriate Tcl script running inside the +auxiliary, and optionally getting back replies. I/O operations are +always initiated by the eCos target-side, it is not possible for the +host-side software to initiate data transfers. However the host-side +can raise interrupts, and the interrupt handler inside the target can +then exchange one or more messages with the host. + </P +><P +>There is a single function to perform I/O operations, +<TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +>. This takes the following +arguments: + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="VARNAME" +>device_id</TT +></DT +><DD +><P +>This should be one of the identifiers returned by a previous +call to <TT +CLASS="FUNCTION" +>synth_auxiliary_instantiate</TT +>, specifying the +particular device which should perform some I/O. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>request</TT +></DT +><DD +><P +>Request are just signed 32-bit integers that identify the particular +I/O operation being requested. There is no fixed set of codes, instead +each type of device can define its own. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>arg1</TT +>, <TT +CLASS="VARNAME" +>arg2</TT +></DT +><DD +><P +>For some requests it is convenient to pass one or two additional +parameters alongside the request code. For example an ethernet device +could define a multicast-all request, with <TT +CLASS="VARNAME" +>arg1</TT +> +controlling whether this mode should be enabled or disabled. Both +<TT +CLASS="VARNAME" +>arg1</TT +> and <TT +CLASS="VARNAME" +>arg2</TT +> should be signed +32-bit integers, and their values are interpreted only by the +device-specific Tcl script. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>txdata</TT +>, <TT +CLASS="VARNAME" +>txlen</TT +></DT +><DD +><P +>Some I/O operations may involve sending additional data, for example +an ethernet packet. Alternatively a control operation may require many +more parameters than can easily be encoded in <TT +CLASS="VARNAME" +>arg1</TT +> +and <TT +CLASS="VARNAME" +>arg2</TT +>, so those parameters have to be placed in +a suitable buffer and extracted at the other end. +<TT +CLASS="VARNAME" +>txdata</TT +> is an arbitrary buffer of +<TT +CLASS="VARNAME" +>txlen</TT +> bytes that should be sent to the host-side. +There is no specific upper bound on the number of bytes that can be +sent, but usually it is a good idea to allocate the transmit buffer +statically and keep transfers down to at most several kilobytes. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>reply</TT +></DT +><DD +><P +>If the host-side is expected to send a reply message then +<TT +CLASS="VARNAME" +>reply</TT +> should be a pointer to an integer variable +and will be updated with a reply code, a simple 32-bit integer. The +synthetic target HAL code assumes that the host-side and target-side +agree on the protocol being used: if the host-side will not send a +reply to this message then the <TT +CLASS="VARNAME" +>reply</TT +> argument +should be a NULL pointer; otherwise the host-side must always send +a reply code and the <TT +CLASS="VARNAME" +>reply</TT +> argument must be valid. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>rxdata</TT +>, <TT +CLASS="VARNAME" +>rxlen</TT +></DT +><DD +><P +>Some operations may involve additional data coming from the host-side, +for example an incoming ethernet packet. <TT +CLASS="VARNAME" +>rxdata</TT +> +should be a suitably-sized buffer, and <TT +CLASS="VARNAME" +>rxlen</TT +> a +pointer to an integer variable that will end up containing the number +of bytes that were actually received. These arguments will only be +used if the host-side is expected to send a reply and hence the +<TT +CLASS="VARNAME" +>reply</TT +> argument was not NULL. + </P +></DD +><DT +><TT +CLASS="VARNAME" +>max_rxlen</TT +></DT +><DD +><P +>If a reply to this message is expected and that reply may involve +additional data, <TT +CLASS="VARNAME" +>max_rxlen</TT +> limits the size of that +reply. In other words, it corresponds to the size of the +<TT +CLASS="VARNAME" +>rxdata</TT +> buffer. + </P +></DD +></DL +></DIV +><P +>Most I/O operations involve only some of the arguments. For example +transmitting an ethernet packet would use the +<TT +CLASS="VARNAME" +>request</TT +>, <TT +CLASS="VARNAME" +>txdata</TT +> and +<TT +CLASS="VARNAME" +>txlen</TT +> fields (in addition to +<TT +CLASS="VARNAME" +>device_id</TT +> which is always required), but would not +involve <TT +CLASS="VARNAME" +>arg1</TT +> or <TT +CLASS="VARNAME" +>arg2</TT +> and no +reply would be expected. Receiving an ethernet packet would involve +<TT +CLASS="VARNAME" +>request</TT +>, <TT +CLASS="VARNAME" +>rxdata</TT +>, +<TT +CLASS="VARNAME" +>rxlen</TT +> and <TT +CLASS="VARNAME" +>max_rxlen</TT +>; in addition +<TT +CLASS="VARNAME" +>reply</TT +> is needed to get any reply from the host-side +at all, and could be used to indicate whether or not any more packets +are buffered up. A control operation such as enabling multicast mode +would involve <TT +CLASS="VARNAME" +>request</TT +> and <TT +CLASS="VARNAME" +>arg1</TT +>, +but none of the remaining arguments. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-NEW-TARGET-INTERRUPTS" +></A +><H2 +>Interrupt Handling</H2 +><P +>Interrupt handling in the synthetic target is much the same as on a +real target. An interrupt object is created using +<TT +CLASS="FUNCTION" +>cyg_drv_interrupt_create</TT +>, attached, and unmasked. +The emulated device - in other words the Tcl script running inside the +I/O auxiliary - can raise an interrupt. Subject to interrupts being +disabled and the appropriate vector being masked, the system will +invoke the specified ISR function. The synthetic target HAL +implementation does have some limitations: there is no support for +nested interrupts, interrupt priorities, or a separate interrupt +stack. Supporting those might be appropriate when targetting a +simulator that attempts to model real hardware accurately, but not for +the simple emulation provided by the synthetic target. + </P +><P +>Of course the actual implementation of the ISR and DSR functions will +be rather different for a synthetic target device driver. For real +hardware the device driver will interact with the device by reading +and writing device registers, managing DMA engines, and the like. A +synthetic target driver will instead call +<TT +CLASS="FUNCTION" +>synth_auxiliary_xchgmsg</TT +> to perform the I/O +operations. + </P +><P +>There is one other significant difference between interrupt handling +on the synthetic target and on real hardware. Usually the eCos code +will know which interrupt vectors are used for which devices. That +information is fixed when the target hardware is designed. With the +synthetic target interrupt vectors are assigned to devices on the host +side, either via the target definition file or dynamically when the +device is instantiated. Therefore the initialization code for a +target-side device driver will need to request interrupt vector +information from the host-side, via a message exchange. Such interrupt +vectors will be in the range 1 to 31 inclusive, with interrupt 0 being +reserved for the real-time clock. + </P +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth-syscalls.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-new-host.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>System Calls</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>Writing New Devices - host</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
--- a/packages/hal/synth/arch/current/doc/synth-porting.html +++ b/packages/hal/synth/arch/current/doc/synth-porting.html @@ -3,9 +3,6 @@ <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> -<!-- Distribution of substantively modified versions of this --> -<!-- document is prohibited without the explicit permission of the --> -<!-- copyright holder. --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> @@ -16,14 +13,14 @@ ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" -CONTENT="Modular DocBook HTML Stylesheet Version 1.64 +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Synthetic Target" HREF="hal-synth-arch.html"><LINK REL="PREVIOUS" -TITLE="System Calls" -HREF="synth-syscalls.html"></HEAD +TITLE="Writing New Devices - host" +HREF="synth-new-host.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" @@ -34,6 +31,7 @@ ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE +SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -50,7 +48,8 @@ WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A -HREF="synth-syscalls.html" +HREF="synth-new-host.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -70,17 +69,15 @@ ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A -NAME="SYNTH-PORTING" ->Porting</A -></H1 +NAME="SYNTH-PORTING">Porting</H1 ><DIV CLASS="REFNAMEDIV" ><A -NAME="AEN92" +NAME="AEN1049" ></A ><H2 >Name</H2 ->Porting -- The eCos synthetic target</DIV +>Porting -- Adding support for other hosts</DIV ><DIV CLASS="REFSECT1" ><A @@ -96,7 +93,7 @@ straightforward, for example a port to L an x86. Porting to Unix or Unix-like operating systems other than Linux may be possible, but would involve more effort. Porting to a completely different operating system such as Windows would be very -difficult. The text below completes the eCos Porting Guide. +difficult. The text below complements the eCos Porting Guide. </P ></DIV ><DIV @@ -128,12 +125,11 @@ to update the toplevel <TT CLASS="FILENAME" >ecos.db</TT > database with an -entry for the new HAL package, and a new target entry will be needed -as well. +entry for the new HAL package, and a new target entry will be needed. </P ><P ->Obviously a different processor will have different register sets -and calling conventions, so the code for saving and restoring thread +>Obviously a different processor will have different register sets and +calling conventions, so the code for saving and restoring thread contexts and for implementing <TT CLASS="FUNCTION" >setjmp</TT @@ -142,20 +138,21 @@ CLASS="FUNCTION" CLASS="FUNCTION" >longjmp</TT > will need to be updated. The exact way of -performing Linux system calls will also vary: on i386linux this -usually involves pushing some registers on the stack and then -executing an <TT +performing Linux system calls will vary: on x86 linux this usually +involves pushing some registers on the stack and then executing an +<TT CLASS="LITERAL" >int 0x080</TT -> trap instruction, but -on a different processor the arguments might be passed in registers -instead and certainly a different trap instruction will be used. The -startup code is also written in assembler, but needs to do little more -than jump to the main <TT +> trap instruction, but on a different +processor the arguments might be passed in registers instead and +certainly a different trap instruction will be used. The startup code +is written in assembler, but needs to do little more than extract the +process' argument and environment variables and then jump to the main +<TT CLASS="FUNCTION" >linux_entry</TT -> function -provided by the architectural synthetic target HAL package. +> function provided by the +architectural synthetic target HAL package. </P ><P >The header file <TT @@ -164,7 +161,7 @@ CLASS="FILENAME" > provided by the architectural HAL package provides various structure definitions, function prototypes, and macros related to system calls. These are -correct for i386linux, but there may be problems on other processors. +correct for x86 linux, but there may be problems on other processors. For example a structure field that is currently defined as a 32-bit number may in fact may be a 64-bit number instead. </P @@ -185,7 +182,10 @@ but usually eCos applications can and sh ><P >Other HAL functionality such as interrupt handling, diagnostics, and the system clock are provided by the architectural HAL package and -should work on different processors with few if any changes. +should work on different processors with few if any changes. There may +be some problems in the code that interacts with the I/O auxiliary +because of lurking assumptions about endianness or the sizes of +various data types. </P ><P >When porting to other processors, a number of sources of information @@ -205,11 +205,11 @@ NAME="SYNTH-PORTING-UNIX" >Other Unix Platforms</H2 ><P >Porting to a Unix or Unix-like operating system other than Linux would -be somewhat more involved. The first requirement involves toolchains: -the GNU compilers, gcc and g++, must definitely be used; use of other -GNU tools such as the linker may be needed as well, because eCos -depends on functionality such as prioritizing C++ static constructors, -and other linkers may not implement this or may implement it in a +be somewhat more involved. The first requirement is toolchains: the +GNU compilers, gcc and g++, must definitely be used; use of other GNU +tools such as the linker may be needed as well, because eCos depends +on functionality such as prioritizing C++ static constructors, and +other linkers may not implement this or may implement it in a different and incompatible way. A closely related requirement is the use of ELF format for binary executables: if the operating system still uses an older format such as COFF then there are likely to be @@ -241,6 +241,16 @@ simple system calls, and instead wrapper implemented at the variant HAL level. </P ><P +>The generic I/O auxiliary code should be fairly portable to other Unix +platforms. However some of the device drivers may contain code that is +specific to Linux, for example the <TT +CLASS="LITERAL" +>PF_PACKET</TT +> socket +address family and the ethertap virtual tunnelling interface. These +may prove quite difficult to port. + </P +><P >The remaining porting task is to implement one or more platform HAL packages, one per processor type that is supported. This should involve much the same work as a port to <A @@ -255,39 +265,6 @@ However there is still a good chance tha been ported already, so its source code may contain much useful information. </P -><DIV -CLASS="CAUTION" -><P -></P -><TABLE -CLASS="CAUTION" -BORDER="1" -WIDTH="100%" -><TR -><TD -ALIGN="CENTER" -><B ->Caution</B -></TD -></TR -><TR -><TD -ALIGN="LEFT" -><P ->Users should be aware that future enhancements to the synthetic target -code, especially in areas related to I/O, may be much more closely -tied to Linux. For example access to ethernet facilities might be -implemented using the <TT -CLASS="LITERAL" ->PF_PACKET</TT -> socket address -family, or the virtual tunnelling interface. Porting such code to -other Unix operating systems may prove rather more difficult. - </P -></TD -></TR -></TABLE -></DIV ></DIV ><DIV CLASS="REFSECT1" @@ -348,6 +325,7 @@ CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -358,7 +336,8 @@ WIDTH="33%" ALIGN="left" VALIGN="top" ><A -HREF="synth-syscalls.html" +HREF="synth-new-host.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -367,6 +346,7 @@ ALIGN="center" VALIGN="top" ><A HREF="hal-synth-arch.html" +ACCESSKEY="H" >Home</A ></TD ><TD @@ -380,7 +360,7 @@ VALIGN="top" WIDTH="33%" ALIGN="left" VALIGN="top" ->System Calls</TD +>Writing New Devices - host</TD ><TD WIDTH="34%" ALIGN="center"
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/doc/synth-running.html @@ -0,0 +1,964 @@ +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/). --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission is obtained from the copyright holder. --> +<HTML +><HEAD +><TITLE +>Running a Synthetic Target Application</TITLE +><meta name="MSSmartTagsPreventParsing" content="TRUE"> +<META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ +"><LINK +REL="HOME" +TITLE="eCos Synthetic Target" +HREF="hal-synth-arch.html"><LINK +REL="PREVIOUS" +TITLE="Installation" +HREF="synth-install.html"><LINK +REL="NEXT" +TITLE="The I/O Auxiliary's User Interface" +HREF="synth-gui.html"></HEAD +><BODY +CLASS="REFENTRY" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>eCos Synthetic Target</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="synth-install.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="synth-gui.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><H1 +><A +NAME="SYNTH-RUNNING">Running a Synthetic Target Application</H1 +><DIV +CLASS="REFNAMEDIV" +><A +NAME="AEN95" +></A +><H2 +>Name</H2 +>Execution -- Arguments and configuration files</DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-RUNNING-DESCRIPTION" +></A +><H2 +>Description</H2 +><P +>The procedure for configuring and building eCos and an application for +the synthetic target is the same as for any other eCos target. Once an +executable has been built it can be run like any Linux program, for +example from a shell prompt, + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ ecos_hello <options></PRE +></TD +></TR +></TABLE +><P +>or using gdb: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ gdb --nw --quiet --args ecos_hello <options> +(gdb) run +Starting program: ecos_hello <options></PRE +></TD +></TR +></TABLE +><P +>By default use of the I/O auxiliary is disabled. If its I/O facilities +are required then the option <TT +CLASS="OPTION" +>--io</TT +> must be used. + </P +><DIV +CLASS="NOTE" +><BLOCKQUOTE +CLASS="NOTE" +><P +><B +>Note: </B +>In future the default behaviour may change, with the I/O auxiliary +being started by default. The option <TT +CLASS="OPTION" +>--nio</TT +> can be +used to prevent the auxiliary from being run. + </P +></BLOCKQUOTE +></DIV +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-RUNNING-ARGUMENTS" +></A +><H2 +>Command-line Arguments</H2 +><P +>The syntax for running a synthetic target application is: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ <ecos_app> [options] [-- [app_options]]</PRE +></TD +></TR +></TABLE +><P +>Command line options up to the <TT +CLASS="OPTION" +>--</TT +> are passed on to +the I/O auxiliary. Subsequent arguments are not passed on to the +auxiliary, and hence can be used by the eCos application itself. The +full set of arguments can be accessed through the variables +<TT +CLASS="VARNAME" +>cyg_hal_sys_argc</TT +> and +<TT +CLASS="VARNAME" +>cyg_hal_sys_argv</TT +>. + </P +><P +>The following options are accepted as standard: + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="OPTION" +>--io</TT +></DT +><DD +><P +>This option causes the eCos application to spawn the I/O auxiliary +during HAL initialization. Without this option only limited I/O will +be available. + </P +></DD +><DT +><TT +CLASS="OPTION" +>--nio</TT +></DT +><DD +><P +>This option prevents the eCos application from spawning the I/O +auxiliary. In the current version of the software this is the default. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-nw</TT +>, <TT +CLASS="OPTION" +>--no-windows</TT +></DT +><DD +><P +>The I/O auxiliary can either provide a graphical user interface, or it +can run in a text-only mode. The default is to provide the graphical +interface, but this can be disabled with <TT +CLASS="OPTION" +>-nw</TT +>. +Emulation of some devices, for example buttons connected to digital +inputs, requires the graphical interface. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-w</TT +>, <TT +CLASS="OPTION" +>--windows</TT +></DT +><DD +><P +>The <TT +CLASS="OPTION" +>-w</TT +> causes the I/O auxiliary to provide a +graphical user interface. This is the default. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-v</TT +>, <TT +CLASS="OPTION" +>--version</TT +></DT +><DD +><P +>The <TT +CLASS="OPTION" +>-v</TT +> option can be used to determine the version of +the I/O auxiliary being used and where it has been installed. Both the +auxiliary and the eCos application will exit immediately. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-h</TT +>, <TT +CLASS="OPTION" +>--help</TT +></DT +><DD +><P +><TT +CLASS="OPTION" +>-h</TT +> causes the I/O auxiliary to list all accepted +command-line arguments. This happens after all devices have been +initialized, since the host-side support for some of the devices may +extend the list of recognised options. After this both the auxiliary +and the eCos application will exit immediately. This option implies +<TT +CLASS="OPTION" +>-nw</TT +>. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-k</TT +>, <TT +CLASS="OPTION" +>--keep-going</TT +></DT +><DD +><P +>If an error occurs in the I/O auxiliary while reading in any of the +configuration files or initializing devices, by default both the +auxiliary and the eCos application will exit. The <TT +CLASS="OPTION" +>-k</TT +> +option can be used to make the auxiliary continue in spite of errors, +although obviously it may not be fully functional. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-nr</TT +>, <TT +CLASS="OPTION" +>--no-rc</TT +></DT +><DD +><P +>Normally the auxiliary processes two <A +HREF="synth-running.html#SYNTH-RUNNING-USER-CONFIG" +>user configuration files</A +> +during startup: <TT +CLASS="FILENAME" +>initrc.tcl</TT +> and +<TT +CLASS="FILENAME" +>mainrc.tcl</TT +>. This can be suppressed using the +<TT +CLASS="OPTION" +>-nr</TT +> option. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-x</TT +>, <TT +CLASS="OPTION" +>--exit</TT +></DT +><DD +><P +>When providing a graphical user interface the I/O auxiliary will +normally continue running even after the eCos application has exited. +This allows the user to take actions such as saving the current +contents of the main text window. If run with <TT +CLASS="OPTION" +>-x</TT +> then +the auxiliary will exit as soon the application exits. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-nx</TT +>, <TT +CLASS="OPTION" +>--no-exit</TT +></DT +><DD +><P +>When the graphical user interface is disabled with +<TT +CLASS="OPTION" +>-nw</TT +> the I/O auxiliary will normally exit immediately +when the eCos application exits. Without the graphical frontend there +is usually no way for the user to interact directly with the +auxiliary, so there is no point in continuing to run once the eCos +application will no longer request any I/O operations. Specifying the +<TT +CLASS="OPTION" +>-nx</TT +> option causes the auxiliary to continue running +even after the application has exited. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-V</TT +>, <TT +CLASS="OPTION" +>--verbose</TT +></DT +><DD +><P +>This option causes the I/O auxiliary to output some additional +information, especially during initialization. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-l <file></TT +>, <TT +CLASS="OPTION" +>--logfile <file></TT +></DT +><DD +><P +>Much of the output of the eCos application and the I/O auxiliary is +simple text, for example resulting from eCos +<TT +CLASS="FUNCTION" +>printf</TT +> or <TT +CLASS="FUNCTION" +>diag_printf</TT +> calls. +When running in graphical mode this output goes to a central text +window, and can be saved to a file or edited via menus. The +<TT +CLASS="OPTION" +>-l</TT +> can be used to automatically generate an +additional logfile containing all the text. If graphical +mode is disabled then by default all the text just goes to the current +standard output. Specifying <TT +CLASS="OPTION" +>-l</TT +> causes most of the +text to go into a logfile instead, although some messages such as +errors generated by the auxiliary itself will still go to stdout as +well. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-t <file></TT +>, <TT +CLASS="OPTION" +>--target <file></TT +></DT +><DD +><P +>During initialization the I/O auxiliary reads in a target definition +file. This file holds information such as which Linux devices should +be used to emulate the various eCos devices. The <TT +CLASS="OPTION" +>-t</TT +> +option can be used to specify which target definition should be used +for the current run, defaulting to <TT +CLASS="FILENAME" +>default.tdf</TT +>. +It is not necessary to include the <TT +CLASS="FILENAME" +>.tdf</TT +> suffix, +this will be appended automatically if necessary. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-geometry <geometry></TT +></DT +><DD +><P +>This option can be used to control the size and position of the main +window, as per X conventions. + </P +></DD +></DL +></DIV +><P +>The I/O auxiliary loads support for the various devices dynamically +and some devices may accept additional command line arguments. Details +of these can be obtained using the <TT +CLASS="OPTION" +>-h</TT +> option or by +consulting the device-specific documentation. If an unrecognised +command line argument is used then a warning will be issued. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-RUNNING-TDF" +></A +><H2 +>The Target Definition File</H2 +><P +>The eCos application will want to access devices such as +<TT +CLASS="VARNAME" +>eth0</TT +> or <TT +CLASS="VARNAME" +>/dev/ser0</TT +>. These need to +be mapped on to Linux devices. For example some users may all traffic +on the eCos <TT +CLASS="VARNAME" +>/dev/ser0</TT +> serial device to go via the +Linux serial device <TT +CLASS="VARNAME" +>/dev/ttyS1</TT +>, while ethernet I/O +for the eCos <TT +CLASS="VARNAME" +>eth0</TT +> device should be mapped to the +Linux ethertap device <TT +CLASS="VARNAME" +>tap3</TT +>. Some devices may need +additional configuration information, for example to limit the +number of packets that should be buffered within the I/O auxiliary. +The target definition file provides all this information. + </P +><P +>By default the I/O auxiliary will look for a file +<TT +CLASS="FILENAME" +>default.tdf</TT +>. An alternative target definition can +be specified on the command line using <TT +CLASS="OPTION" +>-t</TT +>, for +example: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="SCREEN" +>$ bridge_app --io -t twineth</PRE +></TD +></TR +></TABLE +><P +>A <TT +CLASS="FILENAME" +>.tdf</TT +> suffix will be appended automatically if +necessary. If a relative pathname is used then the I/O auxiliary will +search for the target definition file in the current directory, then +in <TT +CLASS="FILENAME" +>~/.ecos/synth/</TT +>, and finally +in its install location. + </P +><P +>A typical target definition file might look like this: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device console { + # appearance -foreground white -background black + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 +} + +synth_device ethernet { + eth0 real eth1 + eth1 ethertap tap4 00:01:02:03:FE:06 + + ## Maximum number of packets that should be buffered per interface. + ## Default 16 + #max_buffer 32 + + ## Filters for the various recognised protocols. + ## By default all filters are visible and use standard colours. + filter ether -hide 0 + #filter arp -hide 1 + #filter ipv4 -hide 1 + #filter ipv6 -hide 1 +}</PRE +></TD +></TR +></TABLE +><P +>A target definition file is actually a Tcl script that gets run in the +main interpreter of the I/O auxiliary during initialization. This +provides a lot of flexibility if necessary. For example the script +could open a socket to a resource management server of some sort to +determine which hardware facilities are already in use and adapt +accordingly. Another possibility is to adapt based on <A +HREF="synth-new-host.html#SYNTH-NEW-HOST-ARGS" +>command line arguments</A +>. Users who +are not familiar with Tcl programming should still be able to edit a +simple target definition file without too much difficulty, using a +mixture of cut'n'paste, commenting or uncommenting various lines, and +making small edits such as changing <TT +CLASS="LITERAL" +>tap4</TT +> to +<TT +CLASS="LITERAL" +>eth2</TT +>. + </P +><P +>Each type of device will have its own entry in the target definition +file, taking the form: + </P +><TABLE +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" +><TR +><TD +><PRE +CLASS="PROGRAMLISTING" +>synth_device <device type> { + <options> +}</PRE +></TD +></TR +></TABLE +><P +>The documentaton for each synthetic target device should provide +details of the options available for that device, and often a suitable +fragment that can be pasted into a target definition file and edited. +There is no specific set of options that a given device will always +provide. However in practice many devices will use common code +exported by the main I/O auxiliary, or their implementation will +involve some re-use of code for an existing device. Hence certain +types of option are common to many devices. + </P +><P +>A good example of this is filters, which control the appearance of +text output. The above target definition file defines a filter +<TT +CLASS="VARNAME" +>trace</TT +> for output from the eCos application. The +regular expression will match output from the infrastructure package's +tracing facilities when <TT +CLASS="VARNAME" +>CYGDBG_USE_TRACING</TT +> and +<TT +CLASS="VARNAME" +>CYGDBG_INFRA_DEBUG_TRACE_ASSERT_SIMPLE</TT +> are enabled. +With the current settings this output will not be visible by default, +but can be made visible using the menu item <SPAN +CLASS="GUIMENUITEM" +>System +Filters</SPAN +>. If made visible the trace output will appear in +an unusual colour, so users can easily distinguish the trace output +from other text. All filters accept the following options: + </P +><P +></P +><DIV +CLASS="VARIABLELIST" +><DL +><DT +><TT +CLASS="OPTION" +>-hide [0|1]</TT +></DT +><DD +><P +>This controls whether or not text matching this filter should be +invisible by default or not. At run-time the visibility of each filter +can be controlled using the <SPAN +CLASS="GUIMENUITEM" +>System Filters</SPAN +> +menu item. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-foreground <colour></TT +></DT +><DD +><P +>This specifies the foreground colour for all text matching this +filter. The colour can be specified using an RGB value such as +<TT +CLASS="LITERAL" +>#F08010</TT +>, or a symbolic name such as +<TT +CLASS="LITERAL" +>"light steel blue"</TT +>. The X11 utility +<SPAN +CLASS="APPLICATION" +>showrgb</SPAN +> can be used to find out +about the available colours. + </P +></DD +><DT +><TT +CLASS="OPTION" +>-background <colour></TT +></DT +><DD +><P +>This specifies the background colour for all text matching the filter. +As with <TT +CLASS="OPTION" +>-foreground</TT +> the colour can be specified using +a symbolic name or an RGB value. + </P +></DD +></DL +></DIV +><P +>Some devices may create their own subwindows, for example to monitor +ethernet traffic or to provide additional I/O facilities such as +emulated LED's or buttons. Usually the target definition file can be +used to control the <A +HREF="synth-gui.html#SYNTH-GUI-LAYOUT" +>layout</A +> of +these windows. + </P +><P +>The I/O auxiliary will not normally warn about +<B +CLASS="COMMAND" +>synth_device</B +> entries in the target definition file +for devices that are not actually needed by the current eCos +application. This makes it easier to use a single file for several +different applications. However it can lead to confusion if an entry +is spelled incorrectly and hence does not actually get used. The +<TT +CLASS="OPTION" +>-V</TT +> command line option can be used to get warnings +about unused device entries in the target definition file. + </P +><P +>If the body of a <B +CLASS="COMMAND" +>synth_device</B +> command contains an +unrecognised option and the relevant device is in use, the I/O +auxiliary will always issue a warning about such options. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-RUNNING-USER-CONFIG" +></A +><H2 +>User Configuration Files</H2 +><P +>During initialization the I/O auxiliary will execute two user +configuration files, <TT +CLASS="FILENAME" +>initrc.tcl</TT +> and +<TT +CLASS="FILENAME" +>mainrc.tcl</TT +>. It will look for these files in the +directory <TT +CLASS="FILENAME" +>~/.ecos/synth/</TT +>. If +that directory does not yet exist it will be created and populated +with initial dummy files. + </P +><P +>Both of these configuration files are Tcl scripts and will be run in +the main interpreter used by the I/O auxiliary itself. This means that +they have full access to the internals of the auxiliary including the +various Tk widgets, and they can perform file or socket I/O if +desired. The section <A +HREF="synth-new-host.html" +>Writing New Devices - host</A +> contains +information about the facilities available on the host-side for +writing new device drivers, and these can also be used in the +initialization scripts. + </P +><P +>The <TT +CLASS="FILENAME" +>initrc.tcl</TT +> script is run before the auxiliary +has processed any requests from the eCos application, and hence before +any devices have been instantiated. At this point the generic +command-line arguments has been processed, the target definition file +has been read in, and the hooks functionality has been initialized. If +running in graphical mode the main window will have been created, but +has been withdrawn from the screen to allow new widgets to be added +without annoying screen flicker. A typical +<TT +CLASS="FILENAME" +>initrc.tcl</TT +> script could add some menu or toolbar +options, or install a hook function that will be run when the +eCos application exits. + </P +><P +>The <TT +CLASS="FILENAME" +>mainrc.tcl</TT +> script is run after eCos has +performed all its device initialization and after C++ static +constructors have run, and just before the call to +<TT +CLASS="FUNCTION" +>cyg_start</TT +> which will end up transferring control +to the application itself. A typical <TT +CLASS="FILENAME" +>mainrc.tcl</TT +> +script could look at what interrupt vectors have been allocated to +which devices and create a little monitor window that shows interrupt +activity. + </P +></DIV +><DIV +CLASS="REFSECT1" +><A +NAME="SYNTH-RUNNING-SESSION" +></A +><H2 +>Session Information</H2 +><P +>When running in graphical mode, the I/O auxiliary will read in a file +<TT +CLASS="FILENAME" +>~/.ecos/synth/guisession</TT +> containing session +information. This file should not normally be edited manually, instead +it gets updated automatically when the auxiliary exits. The purpose of +this file is to hold configuration options that are manipulated via +the graphical interface, for example which browser should be used to +display online help. + </P +><DIV +CLASS="WARNING" +><P +></P +><TABLE +CLASS="WARNING" +BORDER="1" +WIDTH="100%" +><TR +><TD +ALIGN="CENTER" +><B +>Warning</B +></TD +></TR +><TR +><TD +ALIGN="LEFT" +><P +>GUI session functionality is not yet available in the current release. +When that functionality is fully implemented it is possible that some +target definition file options may be removed, to be replaced by +graphical editing via a suitable preferences dialog, with the +current settings saved in the session file. + </P +></TD +></TR +></TABLE +></DIV +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="synth-install.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="hal-synth-arch.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="synth-gui.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>Installation</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>The I/O Auxiliary's User Interface</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file
--- a/packages/hal/synth/arch/current/doc/synth-syscalls.html +++ b/packages/hal/synth/arch/current/doc/synth-syscalls.html @@ -3,9 +3,6 @@ <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> -<!-- Distribution of substantively modified versions of this --> -<!-- document is prohibited without the explicit permission of the --> -<!-- copyright holder. --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> @@ -16,17 +13,17 @@ ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" -CONTENT="Modular DocBook HTML Stylesheet Version 1.64 +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Synthetic Target" HREF="hal-synth-arch.html"><LINK REL="PREVIOUS" -TITLE="Overview" -HREF="synth.html"><LINK +TITLE="The Console Device" +HREF="synth-console.html"><LINK REL="NEXT" -TITLE="Porting" -HREF="synth-porting.html"></HEAD +TITLE="Writing New Devices - target" +HREF="synth-new-target.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" @@ -37,6 +34,7 @@ ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE +SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -53,7 +51,8 @@ WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A -HREF="synth.html" +HREF="synth-console.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -66,7 +65,8 @@ WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A -HREF="synth-porting.html" +HREF="synth-new-target.html" +ACCESSKEY="N" >Next</A ></TD ></TR @@ -76,13 +76,11 @@ ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A -NAME="SYNTH-SYSCALLS" ->System Calls</A -></H1 +NAME="SYNTH-SYSCALLS">System Calls</H1 ><DIV CLASS="REFNAMEDIV" ><A -NAME="AEN51" +NAME="AEN483" ></A ><H2 >Name</H2 @@ -90,21 +88,17 @@ NAME="AEN51" ><DIV CLASS="REFSYNOPSISDIV" ><A -NAME="AEN54" -></A -><H2 +NAME="AEN486"><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A -NAME="AEN55" -></A -><P +NAME="AEN487"><P ></P ><TABLE -BORDER="0" -BGCOLOR="#E0E0E0" -WIDTH="100%" +BORDER="5" +BGCOLOR="#E0E0F0" +WIDTH="70%" ><TR ><TD ><PRE @@ -118,7 +112,7 @@ CLASS="FUNCSYNOPSISINFO" ><CODE ><CODE CLASS="FUNCDEF" ->int cyg_hal_sys_xyz</CODE +>int cyg_hal_sys_xyzzy</CODE >(...);</CODE ></P ><P @@ -281,6 +275,7 @@ CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -291,7 +286,8 @@ WIDTH="33%" ALIGN="left" VALIGN="top" ><A -HREF="synth.html" +HREF="synth-console.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -300,6 +296,7 @@ ALIGN="center" VALIGN="top" ><A HREF="hal-synth-arch.html" +ACCESSKEY="H" >Home</A ></TD ><TD @@ -307,7 +304,8 @@ WIDTH="33%" ALIGN="right" VALIGN="top" ><A -HREF="synth-porting.html" +HREF="synth-new-target.html" +ACCESSKEY="N" >Next</A ></TD ></TR @@ -316,7 +314,7 @@ HREF="synth-porting.html" WIDTH="33%" ALIGN="left" VALIGN="top" ->Overview</TD +>The Console Device</TD ><TD WIDTH="34%" ALIGN="center" @@ -326,7 +324,7 @@ VALIGN="top" WIDTH="33%" ALIGN="right" VALIGN="top" ->Porting</TD +>Writing New Devices - target</TD ></TR ></TABLE ></DIV
--- a/packages/hal/synth/arch/current/doc/synth.html +++ b/packages/hal/synth/arch/current/doc/synth.html @@ -3,9 +3,6 @@ <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> -<!-- Distribution of substantively modified versions of this --> -<!-- document is prohibited without the explicit permission of the --> -<!-- copyright holder. --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> @@ -16,7 +13,7 @@ ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" -CONTENT="Modular DocBook HTML Stylesheet Version 1.64 +CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Synthetic Target" @@ -25,8 +22,8 @@ REL="PREVIOUS" TITLE="eCos Synthetic Target" HREF="hal-synth-arch.html"><LINK REL="NEXT" -TITLE="System Calls" -HREF="synth-syscalls.html"></HEAD +TITLE="Installation" +HREF="synth-install.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" @@ -37,6 +34,7 @@ ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE +SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -54,6 +52,7 @@ ALIGN="left" VALIGN="bottom" ><A HREF="hal-synth-arch.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -66,7 +65,8 @@ WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A -HREF="synth-syscalls.html" +HREF="synth-install.html" +ACCESSKEY="N" >Next</A ></TD ></TR @@ -76,9 +76,7 @@ ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A -NAME="SYNTH" ->Overview</A -></H1 +NAME="SYNTH">Overview</H1 ><DIV CLASS="REFNAMEDIV" ><A @@ -86,7 +84,7 @@ NAME="AEN6" ></A ><H2 >Name</H2 ->Overview -- The eCos synthetic target</DIV +>The eCos synthetic target -- Overview</DIV ><DIV CLASS="REFSECT1" ><A @@ -106,13 +104,13 @@ hardware. Such boards have a number of t TYPE="1" ><LI ><P ->Obviously there has to be at least one processor to do the work. -Usually this will be a 32-bit processor, but it can be smaller or -larger. Processor speed will vary widely, depending on the expected -needs of the application. However usually the exact processor being -used does not matter very much for most of the development process: -the use of languages such as C or C++ means that the compiler will -handle those details. +>Obviously there has to be at least one processor to do the work. Often +this will be a 32-bit processor, but it can be smaller or larger. +Processor speed will vary widely, depending on the expected needs of +the application. However the exact processor being used tends not to +matter very much for most of the development process: the use of +languages such as C or C++ means that the compiler will handle those +details. </P ></LI ><LI @@ -161,18 +159,52 @@ Instead of running the embedded applicat target board of some sort, it can be run as a Linux process. The processor will be the PC's own processor, for example an x86, and the memory will be the process' address space. Some I/O facilities can be -emulated through system calls. For example clock hardware can be -emulated by setting up a <TT +emulated directly through system calls. For example clock hardware can +be emulated by setting up a <TT CLASS="LITERAL" >SIGALRM</TT -> signal, which will -cause the process to be interrupted at regular intervals. This -emulation of real hardware will not be particularly accurate, for -example the number of cpu cycles available to the eCos application -between clock ticks will vary widely depending on what else is running -on the PC, but for much development work it will be good enough. +> signal, which +will cause the process to be interrupted at regular intervals. This +emulation of real hardware will not be particularly accurate, the +number of cpu cycles available to the eCos application between clock +ticks will vary widely depending on what else is running on the PC, +but for much development work it will be good enough. </P ><P +>Other I/O facilities are provided through an I/O auxiliary process, +ecosynth, that gets spawned by the eCos application during startup. +When an eCos device driver wants to perform some I/O operation, for +example send out an ethernet packet, it sends a request to the I/O +auxiliary. That is an ordinary Linux application so it has ready +access to all normal Linux I/O facilities. To emulate a device +interrupt the I/O auxiliary can raise a <TT +CLASS="LITERAL" +>SIGIO</TT +> +signal within the eCos application. The HAL's interrupt subsystem +installs a signal handler for this, which will then invoke the +standard eCos ISR/DSR mechanisms. The I/O auxiliary is based around +Tcl scripting, making it easy to extend and customize. It should be +possible to configure the synthetic target so that its I/O +functionality is similar to what will be available on the final target +hardware for the application being developed. + </P +><DIV +CLASS="INFORMALFIGURE" +><A +NAME="AEN25"><P +></P +><DIV +CLASS="MEDIAOBJECT" +><P +><IMG +SRC="overview.gif" +ALIGN="CENTER"></P +></DIV +><P +></P +></DIV +><P >A key requirement for synthetic target code is that the embedded application must not be linked with any of the standard Linux libraries such as the GNU C library: that would lead to a confusing @@ -209,12 +241,20 @@ arguments on to the stack and executes t kernel cannot tell the difference, so it will perform the I/O operation requested by the synthetic target. With appropriate knowledge of what system calls are available, this makes it possible -to emulate the required I/O facilities. For example diagnostic output -can be achieved by a <TT +to emulate the required I/O facilities. For example, spawning the +ecosynth I/O auxiliary involves system calls +<TT +CLASS="FUNCTION" +>cyg_hal_sys_fork</TT +> and +<TT +CLASS="FUNCTION" +>cyg_hal_sys_execve</TT +>, and sending a request to the +auxiliary uses <TT CLASS="FUNCTION" >cyg_hal_sys_write</TT -> system -call using file descriptor 1, which corresponds to stdout. +>. </P ><P >In many ways developing for the synthetic target is no different from @@ -268,125 +308,13 @@ simulator or special tools. This will be simpler than using an architectural simulator, but no attempt is made to accurately match the behaviour of a real embedded target. </P -><DIV -CLASS="NOTE" -><BLOCKQUOTE -CLASS="NOTE" -><P -><B ->Note: </B ->Support for emulating standard hardware such as ethernet is not yet -available in the current release of the eCos synthetic target code, -but is planned for future versions. Emulating application-specific -custom hardware is rather more difficult since there is no way of -knowing just what strange hardware a particular application might -need, but the I/O mechanisms planned should allow for -application-specific extensions. - </P -></BLOCKQUOTE -></DIV -></DIV -><DIV -CLASS="REFSECT1" -><A -NAME="SYNTH-TOOLS" -></A -><H2 ->Toolchain</H2 -><P ->When developing eCos applications for a normal embedded target it is -necessary to use a suitable cross-compiler and related tools such as -the linker. Developing for the synthetic target is easier because you -can just use the standard GNU tools (gcc, g++, ld, …) which -were provided with your Linux distribution, or which you used to build -your own Linux setup. Any reasonably recent version of the tools, for -example gcc 2.96(Red Hat) as shipped with Red Hat Linux 7, should be -sufficient. - </P -><P ->There is one important limitation when using these tools: current gdb -will not support debugging of eCos threads on the synthetic target. As -far as gdb is concerned a synthetic target application is also -indistinguishable from a normal Linux application, so it assumes that -any threads will be created by calls to the Linux -<TT -CLASS="FUNCTION" ->pthread_create</TT -> function provided by the C -library. Obviously this is not the case since the application is never -linked with that library. Therefore gdb never notices the eCos thread -mechanisms and assumes the application is single-threaded. Fixing this -is possible but would involve non-trivial changes to gdb. - </P -><P ->Theoretically it is possible to develop synthetic target applications -on, for example, a PC running Windows and then run the resulting -executables on another machine that runs Linux. This is rarely useful: -if a Linux machine is available then usually that machine will also be -used for building ecos and the application. However, if for some -reason it is necessary or desirable to build on another machine then -this requires a suitable cross-compiler and related tools. If the -application will be running on a typical PC with an x86 processor then -a suitable configure triplet would be -<TT -CLASS="USERINPUT" -><B ->i686-pc-linux-gnu</B -></TT ->. The installation -instructions for the various GNU tools should be consulted for further -information. - </P -></DIV -><DIV -CLASS="REFSECT1" -><A -NAME="SYNTH-HARDWARE" -></A -><H2 ->Hardware Preparation</H2 -><P ->Preparing a real embedded target for eCos development can be tricky. -Often the first step is to install suitable firmware, usually RedBoot. -This means creating and building a special configuration for eCos with -the RedBoot template, then somehow updating the target's flash chips -with the resulting RedBoot image. Typically it will also be necessary -to get a working serial connection, and possibly set up ethernet as -well. Although usually none of the individual steps are particularly -complicated, there are plenty of ways in which things can go wrong and -it can be hard to figure out what is actually happening. Of course -some board manufacturers make life easier for their developers by -shipping hardware with RedBoot preinstalled, but even then it is still -necessary to set up communication between host and target. - </P -><P ->None of this is applicable to the synthetic target. Instead you can -just build a normal eCos configuration, link your application with the -resulting libraries, and you end up with an executable that you can -run directly on your Linux machine or via gdb. A useful side effect of -this is that application development can start before any real -embedded hardware is actually available. - </P -><P ->Typically the memory map for a synthetic target application will be -set up such that there is a read-only ROM region containing all the -code and constant data, and a read-write RAM region for the data. The -default locations and sizes of these regions depend on the specific -platform being used for development. Note that the application always -executes out of ROM: on a real embedded target much of the development -would involve running RedBoot firmware there, with application code -and data loaded into RAM; usually this would change for the final -system; the firmware would be removed; and the application itself -would execute from ROM and perform the appropriate hardware -initialization. Therefore the synthetic target actually emulates the -behaviour of the final system, not the development environment. - </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" @@ -398,6 +326,7 @@ ALIGN="left" VALIGN="top" ><A HREF="hal-synth-arch.html" +ACCESSKEY="P" >Prev</A ></TD ><TD @@ -406,6 +335,7 @@ ALIGN="center" VALIGN="top" ><A HREF="hal-synth-arch.html" +ACCESSKEY="H" >Home</A ></TD ><TD @@ -413,7 +343,8 @@ WIDTH="33%" ALIGN="right" VALIGN="top" ><A -HREF="synth-syscalls.html" +HREF="synth-install.html" +ACCESSKEY="N" >Next</A ></TD ></TR @@ -432,7 +363,7 @@ VALIGN="top" WIDTH="33%" ALIGN="right" VALIGN="top" ->System Calls</TD +>Installation</TD ></TR ></TABLE ></DIV
--- a/packages/hal/synth/arch/current/doc/synth.sgml +++ b/packages/hal/synth/arch/current/doc/synth.sgml @@ -9,38 +9,22 @@ <!-- Synthetic target architectural documentation. --> <!-- --> <!-- =============================================================== --> -#####ECOSGPLCOPYRIGHTBEGIN#### -## ------------------------------------------- -## This file is part of eCos, the Embedded Configurable Operating System. -## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. -## -## eCos is free software; you can redistribute it and/or modify it under -## the terms of the GNU General Public License as published by the Free -## Software Foundation; either version 2 or (at your option) any later version. -## -## eCos is distributed in the hope that it will be useful, but WITHOUT ANY -## WARRANTY; without even the implied warranty of MERCHANTABILITY or -## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -## for more details. -## -## You should have received a copy of the GNU General Public License along -## with eCos; if not, write to the Free Software Foundation, Inc., -## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. -## -## As a special exception, if other files instantiate templates or use macros -## or inline functions from this file, or you compile this file and link it -## with other works to produce a work based on this file, this file does not -## by itself cause the resulting work to be covered by the GNU General Public -## License. However the source code for this file must still be made available -## in accordance with section (3) of the GNU General Public License. -## -## This exception does not invalidate any other reasons why a work based on -## this file might be covered by the GNU General Public License. -## -## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. -## at http://sources.redhat.com/ecos/ecos-license/ -## ------------------------------------------- -#####ECOSGPLCOPYRIGHTEND#### +<!-- ####COPYRIGHTBEGIN#### --> +<!-- --> +<!-- =============================================================== --> +<!-- Copyright (C) 2002 Bart Veer. --> +<!-- Copyright (C) 2002 Red Hat, Inc. --> +<!-- This material may be distributed only subject to the terms --> +<!-- and conditions set forth in the Open Publication License, v1.0 --> +<!-- or later (the latest version is presently available at --> +<!-- http://www.opencontent.org/openpub/) --> +<!-- Distribution of the work or derivative of the work in any --> +<!-- standard (paper) book form is prohibited unless prior --> +<!-- permission obtained from the copyright holder --> +<!-- =============================================================== --> +<!-- --> +<!-- ####COPYRIGHTEND#### --> +<!-- =============================================================== --> <!-- =============================================================== --> <!-- #####DESCRIPTIONBEGIN#### --> <!-- --> @@ -63,8 +47,8 @@ <refentrytitle>Overview</refentrytitle> </refmeta> <refnamediv> - <refname>Overview</refname> - <refpurpose>The eCos synthetic target</refpurpose> + <refname>The eCos synthetic target</refname> + <refpurpose>Overview</refpurpose> </refnamediv> <refsect1 id="synth-description"><title>Description</title> @@ -76,13 +60,13 @@ hardware. Such boards have a number of t </para> <orderedlist> <listitem><para> -Obviously there has to be at least one processor to do the work. -Usually this will be a 32-bit processor, but it can be smaller or -larger. Processor speed will vary widely, depending on the expected -needs of the application. However usually the exact processor being -used does not matter very much for most of the development process: -the use of languages such as C or C++ means that the compiler will -handle those details. +Obviously there has to be at least one processor to do the work. Often +this will be a 32-bit processor, but it can be smaller or larger. +Processor speed will vary widely, depending on the expected needs of +the application. However the exact processor being used tends not to +matter very much for most of the development process: the use of +languages such as C or C++ means that the compiler will handle those +details. </para></listitem> <listitem><para> There needs to be memory for code and for data. A typical system will @@ -124,15 +108,38 @@ Instead of running the embedded applicat target board of some sort, it can be run as a Linux process. The processor will be the PC's own processor, for example an x86, and the memory will be the process' address space. Some I/O facilities can be -emulated through system calls. For example clock hardware can be -emulated by setting up a <literal>SIGALRM</literal> signal, which will -cause the process to be interrupted at regular intervals. This -emulation of real hardware will not be particularly accurate, for -example the number of cpu cycles available to the eCos application -between clock ticks will vary widely depending on what else is running -on the PC, but for much development work it will be good enough. +emulated directly through system calls. For example clock hardware can +be emulated by setting up a <literal>SIGALRM</literal> signal, which +will cause the process to be interrupted at regular intervals. This +emulation of real hardware will not be particularly accurate, the +number of cpu cycles available to the eCos application between clock +ticks will vary widely depending on what else is running on the PC, +but for much development work it will be good enough. </para> <para> +Other I/O facilities are provided through an I/O auxiliary process, +ecosynth, that gets spawned by the eCos application during startup. +When an eCos device driver wants to perform some I/O operation, for +example send out an ethernet packet, it sends a request to the I/O +auxiliary. That is an ordinary Linux application so it has ready +access to all normal Linux I/O facilities. To emulate a device +interrupt the I/O auxiliary can raise a <literal>SIGIO</literal> +signal within the eCos application. The HAL's interrupt subsystem +installs a signal handler for this, which will then invoke the +standard eCos ISR/DSR mechanisms. The I/O auxiliary is based around +Tcl scripting, making it easy to extend and customize. It should be +possible to configure the synthetic target so that its I/O +functionality is similar to what will be available on the final target +hardware for the application being developed. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="overview.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> A key requirement for synthetic target code is that the embedded application must not be linked with any of the standard Linux libraries such as the GNU C library: that would lead to a confusing @@ -154,9 +161,11 @@ arguments on to the stack and executes t kernel cannot tell the difference, so it will perform the I/O operation requested by the synthetic target. With appropriate knowledge of what system calls are available, this makes it possible -to emulate the required I/O facilities. For example diagnostic output -can be achieved by a <function>cyg_hal_sys_write</function> system -call using file descriptor 1, which corresponds to stdout. +to emulate the required I/O facilities. For example, spawning the +ecosynth I/O auxiliary involves system calls +<function>cyg_hal_sys_fork</function> and +<function>cyg_hal_sys_execve</function>, and sending a request to the +auxiliary uses <function>cyg_hal_sys_write</function>. </para> <para> In many ways developing for the synthetic target is no different from @@ -205,15 +214,97 @@ simulator or special tools. This will be simpler than using an architectural simulator, but no attempt is made to accurately match the behaviour of a real embedded target. </para> - <note><para> -Support for emulating standard hardware such as ethernet is not yet -available in the current release of the eCos synthetic target code, -but is planned for future versions. Emulating application-specific -custom hardware is rather more difficult since there is no way of -knowing just what strange hardware a particular application might -need, but the I/O mechanisms planned should allow for -application-specific extensions. - </para></note> + </refsect1> +</refentry> + +<!-- }}} --> +<!-- {{{ Installation --> + +<refentry id="synth-install"> + <refmeta> + <refentrytitle>Installation</refentrytitle> + </refmeta> + <refnamediv> + <refname>Installation</refname> + <refpurpose>Preparing to use the synthetic target</refpurpose> + </refnamediv> + + <refsect1 id="synth-install-host"><title>Host-side Software</title> + <para> +To get the full functionality of the synthetic target, users must +build and install the I/O auxiliary ecosynth and various support +files. It is possible to develop applications for the synthetic target +without the auxiliary, but only limited I/O facilities will be +available. The relevant code resides in the <filename +class="directory">host</filename> subdirectory of the synthetic target +architectural HAL package, and building it involves the standard +<command>configure</command>, <command>make</command>, and +<command>make install</command> steps. + </para> + <para> +There are two main ways of building the host-side software. It is +possible to build both the generic host-side software and all +package-specific host-side software, including the I/O auxiliary. in a +single build tree. This involves using the +<command>configure</command> script at the toplevel of the eCos +repository, which will automatically search the <filename +class="directory">packages</filename> hierarchy for host-side +software. For more information on this, see the +<filename>README.host</filename> file at the top of the repository. +Note that if you have an existing build tree which does not include +the synthetic target architectural HAL package then it will be +necessary to rerun the toplevel configure script: the search for +appropriate packages happens at configure time. + </para> + <para> +The alternative is to build just the host-side for this package. +This involves creating a suitable build directory and running the +<command>configure</command> script. Note that building directly in +the source tree is not allowed. + </para> + <screen> +$ cd <somewhere suitable> +$ mkdir synth_build +$ cd synth_build +$ <repo<>/packages/hal/synth/arch/<version>/host/configure <options> +$ make +$ make install +</screen> + <para> +The code makes extensive use of Tcl/TK and requires version 8.3 or +later. This is checked by the <command>configure</command> script. By +default it will use the system's Tcl installation in <filename +class="directory">/usr</filename>. If a different, more recent Tcl +installation should be used then its location can be specified using +the options <option>--with-tcl=<path></option>, +<option>--with-tcl-header=<path></option> and +<option>--with-tcl-lib=<path></option>. For more information on these options +see the <filename>README.host</filename> file at the toplevel of the +eCos repository. + </para> + <para> +Some users may also want to specify the install location using a +<option>--prefix=<path></option> option. The default install +location is <filename class="directory">/usr/local</filename>. It is +essential that the <filename class="directory">bin</filename> +subdirectory of the install location is on the user's search +<envar>PATH</envar>, otherwise the eCos application will be unable to +locate and execute the I/O auxiliary ecosynth. + </para> + <para> +Because ecosynth is run automatically by an eCos application rather +than explicitly by the user, it is not installed in the <filename +class="directory">bin</filename> subdirectory itself. Instead it is +installed below <filename class="directory">libexec</filename>, +together with various support files such as images. At configure time +it is usually possible to specify an alternative location for +<filename class="directory">libexec</filename> using +<option>--exec-prefix=<path></option> or +<option>--libexecdir=<path></option>. These options should not +be used for this package because the eCos application is built +completely separately and does not know how the host-side was +configured. + </para> </refsect1> <refsect1 id="synth-tools"><title>Toolchain</title> @@ -230,7 +321,7 @@ sufficient. <para> There is one important limitation when using these tools: current gdb will not support debugging of eCos threads on the synthetic target. As -far as gdb is concerned a synthetic target application is also +far as gdb is concerned a synthetic target application is indistinguishable from a normal Linux application, so it assumes that any threads will be created by calls to the Linux <function>pthread_create</function> function provided by the C @@ -287,10 +378,890 @@ platform being used for development. Not executes out of ROM: on a real embedded target much of the development would involve running RedBoot firmware there, with application code and data loaded into RAM; usually this would change for the final -system; the firmware would be removed; and the application itself -would execute from ROM and perform the appropriate hardware -initialization. Therefore the synthetic target actually emulates the -behaviour of the final system, not the development environment. +system; the firmware would be replaced by the eCos application itself, +configured for ROM bootstrap, and it would perform the appropriate +hardware initialization. Therefore the synthetic target actually +emulates the behaviour of a final system, not of a development +environment. In practice this is rarely significant, although having +the code in read-only memory can help catch some problems in +application code. + </para> + </refsect1> + +</refentry> + +<!-- }}} --> +<!-- {{{ Running the application --> + +<refentry id="synth-running"> + <refmeta> + <refentrytitle>Running a Synthetic Target Application</refentrytitle> + </refmeta> + <refnamediv> + <refname>Execution</refname> + <refpurpose>Arguments and configuration files</refpurpose> + </refnamediv> + + <refsect1 id="synth-running-description"><title>Description</title> + <para> +The procedure for configuring and building eCos and an application for +the synthetic target is the same as for any other eCos target. Once an +executable has been built it can be run like any Linux program, for +example from a shell prompt, + </para> + <screen> +$ ecos_hello <options> +</screen> + <para> +or using gdb: + </para> + <screen> +$ gdb --nw --quiet --args ecos_hello <options> +(gdb) run +Starting program: ecos_hello <options> +</screen> + <para> +By default use of the I/O auxiliary is disabled. If its I/O facilities +are required then the option <option>--io</option> must be used. + </para> + <note><para> +In future the default behaviour may change, with the I/O auxiliary +being started by default. The option <option>--nio</option> can be +used to prevent the auxiliary from being run. + </para></note> + </refsect1> + + <refsect1 id="synth-running-arguments"><title>Command-line Arguments</title> + <para> +The syntax for running a synthetic target application is: + </para> + <screen> +$ <ecos_app> [options] [-- [app_options]] +</screen> + <para> +Command line options up to the <option>--</option> are passed on to +the I/O auxiliary. Subsequent arguments are not passed on to the +auxiliary, and hence can be used by the eCos application itself. The +full set of arguments can be accessed through the variables +<varname>cyg_hal_sys_argc</varname> and +<varname>cyg_hal_sys_argv</varname>. + </para> + <para> +The following options are accepted as standard: + </para> + <variablelist> + <varlistentry> + <term><option>--io</option></term> + <listitem><para> +This option causes the eCos application to spawn the I/O auxiliary +during HAL initialization. Without this option only limited I/O will +be available. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>--nio</option></term> + <listitem><para> +This option prevents the eCos application from spawning the I/O +auxiliary. In the current version of the software this is the default. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-nw</option>, <option>--no-windows</option></term> + <listitem><para> +The I/O auxiliary can either provide a graphical user interface, or it +can run in a text-only mode. The default is to provide the graphical +interface, but this can be disabled with <option>-nw</option>. +Emulation of some devices, for example buttons connected to digital +inputs, requires the graphical interface. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-w</option>, <option>--windows</option></term> + <listitem><para> +The <option>-w</option> causes the I/O auxiliary to provide a +graphical user interface. This is the default. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-v</option>, <option>--version</option></term> + <listitem><para> +The <option>-v</option> option can be used to determine the version of +the I/O auxiliary being used and where it has been installed. Both the +auxiliary and the eCos application will exit immediately. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-h</option>, <option>--help</option></term> + <listitem><para> +<option>-h</option> causes the I/O auxiliary to list all accepted +command-line arguments. This happens after all devices have been +initialized, since the host-side support for some of the devices may +extend the list of recognised options. After this both the auxiliary +and the eCos application will exit immediately. This option implies +<option>-nw</option>. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-k</option>, <option>--keep-going</option></term> + <listitem><para> +If an error occurs in the I/O auxiliary while reading in any of the +configuration files or initializing devices, by default both the +auxiliary and the eCos application will exit. The <option>-k</option> +option can be used to make the auxiliary continue in spite of errors, +although obviously it may not be fully functional. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-nr</option>, <option>--no-rc</option></term> + <listitem><para> +Normally the auxiliary processes two <link +linkend="synth-running-user-config">user configuration files</link> +during startup: <filename>initrc.tcl</filename> and +<filename>mainrc.tcl</filename>. This can be suppressed using the +<option>-nr</option> option. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-x</option>, <option>--exit</option></term> + <listitem><para> +When providing a graphical user interface the I/O auxiliary will +normally continue running even after the eCos application has exited. +This allows the user to take actions such as saving the current +contents of the main text window. If run with <option>-x</option> then +the auxiliary will exit as soon the application exits. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-nx</option>, <option>--no-exit</option></term> + <listitem><para> +When the graphical user interface is disabled with +<option>-nw</option> the I/O auxiliary will normally exit immediately +when the eCos application exits. Without the graphical frontend there +is usually no way for the user to interact directly with the +auxiliary, so there is no point in continuing to run once the eCos +application will no longer request any I/O operations. Specifying the +<option>-nx</option> option causes the auxiliary to continue running +even after the application has exited. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-V</option>, <option>--verbose</option></term> + <listitem><para> +This option causes the I/O auxiliary to output some additional +information, especially during initialization. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-l <file></option>, <option>--logfile <file></option></term> + <listitem><para> +Much of the output of the eCos application and the I/O auxiliary is +simple text, for example resulting from eCos +<function>printf</function> or <function>diag_printf</function> calls. +When running in graphical mode this output goes to a central text +window, and can be saved to a file or edited via menus. The +<option>-l</option> can be used to automatically generate an +additional logfile containing all the text. If graphical +mode is disabled then by default all the text just goes to the current +standard output. Specifying <option>-l</option> causes most of the +text to go into a logfile instead, although some messages such as +errors generated by the auxiliary itself will still go to stdout as +well. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-t <file></option>, <option>--target <file></option></term> + <listitem><para> +During initialization the I/O auxiliary reads in a target definition +file. This file holds information such as which Linux devices should +be used to emulate the various eCos devices. The <option>-t</option> +option can be used to specify which target definition should be used +for the current run, defaulting to <filename>default.tdf</filename>. +It is not necessary to include the <filename>.tdf</filename> suffix, +this will be appended automatically if necessary. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-geometry <geometry></option></term> + <listitem><para> +This option can be used to control the size and position of the main +window, as per X conventions. + </para></listitem> + </varlistentry> + </variablelist> + <para> +The I/O auxiliary loads support for the various devices dynamically +and some devices may accept additional command line arguments. Details +of these can be obtained using the <option>-h</option> option or by +consulting the device-specific documentation. If an unrecognised +command line argument is used then a warning will be issued. + </para> + </refsect1> + + <refsect1 id="synth-running-tdf"><title>The Target Definition File</title> + <para> +The eCos application will want to access devices such as +<varname>eth0</varname> or <varname>/dev/ser0</varname>. These need to +be mapped on to Linux devices. For example some users may all traffic +on the eCos <varname>/dev/ser0</varname> serial device to go via the +Linux serial device <varname>/dev/ttyS1</varname>, while ethernet I/O +for the eCos <varname>eth0</varname> device should be mapped to the +Linux ethertap device <varname>tap3</varname>. Some devices may need +additional configuration information, for example to limit the +number of packets that should be buffered within the I/O auxiliary. +The target definition file provides all this information. + </para> + <para> +By default the I/O auxiliary will look for a file +<filename>default.tdf</filename>. An alternative target definition can +be specified on the command line using <option>-t</option>, for +example: + </para> + <screen> +$ bridge_app --io -t twineth +</screen> + <para> +A <filename>.tdf</filename> suffix will be appended automatically if +necessary. If a relative pathname is used then the I/O auxiliary will +search for the target definition file in the current directory, then +in <filename class="directory">~/.ecos/synth/</filename>, and finally +in its install location. + </para> + <para> +A typical target definition file might look like this: + </para> + <programlisting> +synth_device console { + # appearance -foreground white -background black + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 +} + +synth_device ethernet { + eth0 real eth1 + eth1 ethertap tap4 00:01:02:03:FE:06 + + ## Maximum number of packets that should be buffered per interface. + ## Default 16 + #max_buffer 32 + + ## Filters for the various recognised protocols. + ## By default all filters are visible and use standard colours. + filter ether -hide 0 + #filter arp -hide 1 + #filter ipv4 -hide 1 + #filter ipv6 -hide 1 +} +</programlisting> + <para> +A target definition file is actually a Tcl script that gets run in the +main interpreter of the I/O auxiliary during initialization. This +provides a lot of flexibility if necessary. For example the script +could open a socket to a resource management server of some sort to +determine which hardware facilities are already in use and adapt +accordingly. Another possibility is to adapt based on <link +linkend="synth-new-host-args">command line arguments</link>. Users who +are not familiar with Tcl programming should still be able to edit a +simple target definition file without too much difficulty, using a +mixture of cut'n'paste, commenting or uncommenting various lines, and +making small edits such as changing <literal>tap4</literal> to +<literal>eth2</literal>. + </para> + <para> +Each type of device will have its own entry in the target definition +file, taking the form: + </para> + <programlisting> +synth_device <device type> { + <options> +} +</programlisting> + <para> +The documentaton for each synthetic target device should provide +details of the options available for that device, and often a suitable +fragment that can be pasted into a target definition file and edited. +There is no specific set of options that a given device will always +provide. However in practice many devices will use common code +exported by the main I/O auxiliary, or their implementation will +involve some re-use of code for an existing device. Hence certain +types of option are common to many devices. + </para> + <para> +A good example of this is filters, which control the appearance of +text output. The above target definition file defines a filter +<varname>trace</varname> for output from the eCos application. The +regular expression will match output from the infrastructure package's +tracing facilities when <varname>CYGDBG_USE_TRACING</varname> and +<varname>CYGDBG_INFRA_DEBUG_TRACE_ASSERT_SIMPLE</varname> are enabled. +With the current settings this output will not be visible by default, +but can be made visible using the menu item <guimenuitem>System +Filters</guimenuitem>. If made visible the trace output will appear in +an unusual colour, so users can easily distinguish the trace output +from other text. All filters accept the following options: + </para> + <variablelist> + <varlistentry> + <term><option>-hide [0|1]</option></term> + <listitem><para> +This controls whether or not text matching this filter should be +invisible by default or not. At run-time the visibility of each filter +can be controlled using the <guimenuitem>System Filters</guimenuitem> +menu item. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-foreground <colour></option></term> + <listitem><para> +This specifies the foreground colour for all text matching this +filter. The colour can be specified using an RGB value such as +<literal>#F08010</literal>, or a symbolic name such as +<literal>"light steel blue"</literal>. The X11 utility +<application>showrgb</application> can be used to find out +about the available colours. + </para></listitem> + </varlistentry> + <varlistentry> + <term><option>-background <colour></option></term> + <listitem><para> +This specifies the background colour for all text matching the filter. +As with <option>-foreground</option> the colour can be specified using +a symbolic name or an RGB value. + </para></listitem> + </varlistentry> + </variablelist> + <para> +Some devices may create their own subwindows, for example to monitor +ethernet traffic or to provide additional I/O facilities such as +emulated LED's or buttons. Usually the target definition file can be +used to control the <link linkend="synth-gui-layout">layout</link> of +these windows. + </para> + <para> +The I/O auxiliary will not normally warn about +<command>synth_device</command> entries in the target definition file +for devices that are not actually needed by the current eCos +application. This makes it easier to use a single file for several +different applications. However it can lead to confusion if an entry +is spelled incorrectly and hence does not actually get used. The +<option>-V</option> command line option can be used to get warnings +about unused device entries in the target definition file. + </para> + <para> +If the body of a <command>synth_device</command> command contains an +unrecognised option and the relevant device is in use, the I/O +auxiliary will always issue a warning about such options. + </para> + </refsect1> + + <refsect1 id="synth-running-user-config"><title>User Configuration Files</title> + <para> +During initialization the I/O auxiliary will execute two user +configuration files, <filename>initrc.tcl</filename> and +<filename>mainrc.tcl</filename>. It will look for these files in the +directory <filename class="directory">~/.ecos/synth/</filename>. If +that directory does not yet exist it will be created and populated +with initial dummy files. + </para> + <para> +Both of these configuration files are Tcl scripts and will be run in +the main interpreter used by the I/O auxiliary itself. This means that +they have full access to the internals of the auxiliary including the +various Tk widgets, and they can perform file or socket I/O if +desired. The section <xref linkend="synth-new-host"> contains +information about the facilities available on the host-side for +writing new device drivers, and these can also be used in the +initialization scripts. + </para> + <para> +The <filename>initrc.tcl</filename> script is run before the auxiliary +has processed any requests from the eCos application, and hence before +any devices have been instantiated. At this point the generic +command-line arguments has been processed, the target definition file +has been read in, and the hooks functionality has been initialized. If +running in graphical mode the main window will have been created, but +has been withdrawn from the screen to allow new widgets to be added +without annoying screen flicker. A typical +<filename>initrc.tcl</filename> script could add some menu or toolbar +options, or install a hook function that will be run when the +eCos application exits. + </para> + <para> +The <filename>mainrc.tcl</filename> script is run after eCos has +performed all its device initialization and after C++ static +constructors have run, and just before the call to +<function>cyg_start</function> which will end up transferring control +to the application itself. A typical <filename>mainrc.tcl</filename> +script could look at what interrupt vectors have been allocated to +which devices and create a little monitor window that shows interrupt +activity. + </para> + </refsect1> + + <refsect1 id="synth-running-session"><title>Session Information</title> + <para> +When running in graphical mode, the I/O auxiliary will read in a file +<filename>~/.ecos/synth/guisession</filename> containing session +information. This file should not normally be edited manually, instead +it gets updated automatically when the auxiliary exits. The purpose of +this file is to hold configuration options that are manipulated via +the graphical interface, for example which browser should be used to +display online help. + </para> + <warning><para> +GUI session functionality is not yet available in the current release. +When that functionality is fully implemented it is possible that some +target definition file options may be removed, to be replaced by +graphical editing via a suitable preferences dialog, with the +current settings saved in the session file. + </para></warning> + </refsect1> + +</refentry> + +<!-- }}} --> +<!-- {{{ ecosynth user interface --> + +<refentry id="synth-gui"> + <refmeta> + <refentrytitle>The I/O Auxiliary's User Interface</refentrytitle> + </refmeta> + <refnamediv> + <refname>User Interface</refname> + <refpurpose>Controlling the I/O Auxiliary</refpurpose> + </refnamediv> + + <refsect1 id="synth-gui-description"><title>Description</title> + <para> +The synthetic target auxiliary is designed to support both extensions +and user customization. Support for the desired devices is dynamically +loaded, and each device can extend the user interface. For example it +is possible for a device to add menu options, place new buttons on the +toolbar, create its own sub-window within the overall layout, or even +create entire new toplevel windows. These subwindows or toplevels +could show graphs of activity such as interrupts or packets being +transferred. They could also allow users to interact with the eCos +application, for example by showing a number of buttons which will be +mapped on to digital inputs in the eCos application. Different +applications will have their own I/O requirements, changing the +host-side support files that get loaded and that may modify the user +interface. The I/O auxiliary also reads in user configuration scripts +which can enhance the interface in the same way. Therefore the exact +user interface will depend on the user and on the eCos application +being run. However the overall layout is likely to remain the same. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="screen_main.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +The title bar identifies the window as belonging to an eCos synthetic +target application and lists both the application name and its process +id. The latter is especially useful if the application was started +directly from a shell prompt and the user now wants to attach a gdb +session. The window has a conventional menu bar with the usual +entries, plus a toolbar with buttons for common operations such as cut +and paste. Balloon help is supported. + </para> + <para> +There is a central <link linkend="synth-gui-text">text window</link>, +possibly surrounded by various sub-windows for various devices. For +example there could be a row of emulated LED's above the text window, +and monitors of ethernet traffic and interrupt activity on the right. +At the bottom of the window is a status line, including a small +animation that shows whether or not the eCos application is still +running. + </para> + </refsect1> + + <refsect1 id="synth-gui-menus"><title>Menus and the Toolbar</title> + <para> +Usually there will be four menus on the menu bar: +<guimenu>File</guimenu>, <guimenu>Edit</guimenu>, +<guimenu>View</guimenu> and <guimenu>Help</guimenu>. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="menu_file.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +On the <guimenu>File</guimenu> menu there are three entries related to +saving the current contents of the central text window. +<guimenuitem>Save</guimenuitem> is used to save the currently visible +contents of the text window. Any text that is hidden because of +filters will not be written to the savefile. If there has been a +previous <guimenuitem>Save</guimenuitem> or <guimenuitem>Save +As</guimenuitem> operation then the existing savefile will be re-used, +otherwise the user will be asked to select a suitable file. +<guimenuitem>Save As</guimenuitem> also saves just the currently +visible contents but will always prompt the user for a filename. +<guimenuitem>Save All</guimenuitem> can be used to save the full +contents of the text window, including any text that is currently +hidden. It will always prompt for a new filename, to avoid confusion +with partial savefiles. + </para> + <para> +Usually the eCos application will be run from inside gdb or from a +shell prompt. Killing off the application while it is being debugged +in a gdb session is not a good idea, it would be better to use gdb's +own <command>kill</command> command. Alternatively the eCos +application itself can use the <function>CYG_TEST_EXIT</function> or +<filename>cyg_hal_sys_exit</filename> functionality. However it is +possible to terminate the application from the I/O auxiliary using +<guimenuitem>Kill eCos</guimenuitem>. A clean shutdown will be +attempted, but that can fail if the application is currently halted +inside gdb or if it has crashed completely. As a last resort +<constant>SIGKILL</constant> will be used. + </para> + <para> +When operating in graphical mode the I/O auxiliary will normally +continue to run even after the eCos application has exited. This +allows the user to examine the last few lines of output, and perhaps +perform actions such as saving the output to a file. The +<guimenuitem>Exit</guimenuitem> menu item can be used to shut down the +auxiliary. Note that this behaviour can be changed with command line +arguments <link +linkend="synth-running-arguments"><option>--exit</option></link> and +<link +linkend="synth-running-arguments"><option>--no-exit</option></link>. + </para> + <para> +If <guimenuitem>Exit</guimenuitem> is used while the eCos application +is still running then the I/O auxiliary will first attempt to +terminate the application cleanly, and then exit. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="menu_edit.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +The <guimenu>Edit</guimenu> menu contains the usual entries for +text manipulation: <guimenuitem>Cut</guimenuitem>, +<guimenuitem>Copy</guimenuitem>, <guimenuitem>Paste</guimenuitem>, +<guimenuitem>Clear</guimenuitem> and <guimenuitem>Select +All</guimenuitem>. These all operate on the central text window. By +default this window cannot be edited so the cut, paste and clear +operations are disabled. If the user wants to edit the contents of the +text window then the <guimenuitem>Read Only</guimenuitem> checkbutton +should be toggled. + </para> + <para> +The <guimenuitem>Preferences</guimenuitem> menu item brings up a +miscellaneous preferences dialog. One of the preferences relates to +online help: the I/O auxiliary does not currently have a built-in html +viewer; instead it will execute an external browser of some sort. With +the example settings shown, the I/O auxiliary will first attempt to +interact with an existing mozilla session. If that fails it will try +to run a new mozilla instance, or as a last result use the Gnome help +viewer. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="preferences.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +The <guimenu>View</guimenu> menu contains the <guimenuitem>System +Filters</guimenuitem> entry, used to edit the settings for the current +<link linkend="synth-gui-text">filters</link>. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="menu_view.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +The <guimenu>Help</guimenu> menu can be used to activate online help +for eCos generally, for the synthetic target as a whole, and for +specific devices supported by the generic target. The Preferences +dialog can be used to select the browser that will be used. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="menu_help.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <note><para> +At the time of writing there is no well-defined toplevel index file +for all eCos documentation. Hence the relevant menu item is disabled. +Documentation for the synthetic target and the supported devices +is stored as part of the package itself so can usually be found fairly +easily. It may be necessary to set the <envar>ECOS_REPOSITORY</envar> +environment variable. + </para></note> + + </refsect1> + + <refsect1 id="synth-gui-text"><title>The Main Text Window</title> + <para> +The central text window holds the console output from the eCos +application: the screen shot above shows DHCP initialization data from +the TCP/IP stack, and some output from the <function>main</function> +thread at the bottom. Some devices can insert text of their own, for +example the ethernet device support can be configured to show details +of incoming and outgoing packets. Mixing the output from the eCos +application and the various devices can make it easier to understand +the order in which events occur. + </para> + <para> +The appearance of text from different sources can be controlled by +means of filters, and it is also possible to hide some of the text. +For example, if tracing is enabled in the eCos configuration then the +trace output can be given its own colour scheme, making it stand out +from the rest of the output. In addition the trace output is generally +voluminous so it can be hidden by default, made visible only to find +out more about what was happening when a particular problem occurred. +Similarly the ethernet device support can output details of the +various packets being transferred, and using a different background +colour for this output again makes it easier to distinguish from +console output. + </para> + <para> +The default appearance for most filters is controlled via the +<link linkend="synth-running-tdf">target definition file</link>. An +example entry might be: + </para> + <programlisting> + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 +</programlisting> + <para> +The various colours and the hide flag for each filter can be changed +at run-time, using the <guimenuitem>System Filters</guimenuitem> item +on the <guimenu>View</guimenu> menu. This will bring up a dialog like +the following: + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="filters.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +It should be noted that the text window is line-oriented, not +character-oriented. If an eCos application sends a partial line of +text then that will remain buffered until a newline character is +received, rather than being displayed immediately. This avoids +confusion when there is concurrent output from several sources. + </para> + <para> +By default the text window is read-only. This means it will not allow +cut, paste and clear operations, and keyboard input will be ignored. +The <guimenu>Edit</guimenu> menu has a checkbutton <guimenuitem>Read +Only</guimenuitem> which can be toggled to allow write operations. For +example, a user could type in a reminder of what was happening at this +time, or paste in part of a gdb session. Such keyboard input does not +get forwarded to the eCos application: if the latter requires keyboard +input then that should happen via a separate keyboard device. + </para> + </refsect1> + + <refsect1 id="synth-gui-layout"><title>Positioning Optional Windows</title> + <para> +Some devices may create their own subwindows, for example to monitor +ethernet traffic or to provide additional I/O facilities such as +emulated LED's or buttons. Usually the target definition file can be +used to control the <link linkend="synth-gui-layout">layout</link> of +these windows. This requires an understanding of the overall layout of +the display. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="layout.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +Subwindows are generally packed in one of eight frames surrounding the +central text window: <varname>.main.nw</varname>, +<varname>.main.n</varname>, <varname>.main.ne</varname>, +<varname>.main.w</varname>, <varname>.main.e</varname>, +<varname>.main.sw</varname>, <varname>.main.s</varname>, and +<varname>.main.se</varname>. To position a row of LED's above the text +window and towards the left, a target definition file could contain an +entry such as: + </para> + <programlisting> +synth_device led { + pack -in .main.n -side left + … +} +</programlisting> + <para> +Similarly, to put a traffic monitor window on the right of the text +window would involve something like: + </para> + <programlisting> + … + monitor_pack -in .main.e -side bottom + … +</programlisting> + <para> +Often it will be sufficient to specify a container frame and one of +<constant>left</constant>, <constant>right</constant>, +<constant>top</constant> or <constant>bottom</constant>. Full control +over the positioning requires an understanding of Tcl/Tk and in +particular the packing algorithm, and an appropriate reference work +should be consulted. + </para> + </refsect1> + + <refsect1 id="synth-gui-global-config"><title>Global Settings</title> + <note><para> +This section still to be written - it should document the interaction +between X resources and ecosynth, and how users can control settings +such as the main foreground and background colours. + </para></note> + </refsect1> + +</refentry> + +<!-- }}} --> +<!-- {{{ The console device --> + +<refentry id="synth-console"> + <refmeta> + <refentrytitle>The Console Device</refentrytitle> + </refmeta> + <refnamediv> + <refname>The console device </refname> + <refpurpose>Show output from the eCos application</refpurpose> + </refnamediv> + + <refsect1 id="synth-console-description"><title>Description</title> + <para> +The eCos application can generate text output in a variety of ways, +including calling <function>printf</function> or +<function>diag_printf</function>. When the I/O auxiliary is enabled +the eCos startup code will instantiate a console device to process all +such output. If operating in text mode the output will simply go to +standard output, or to a logfile if the <option>-l</option> command +line option is specified. If operating in graphical mode the output +will go to the central text window, and optionally to a logfile as +well. In addition it is possible to control the appearance of the main +text via the target definition file, and to install extra filters for +certain types of text. + </para> + <para> +It should be noted that the console device is line-oriented, not +character-oriented. This means that outputting partial lines is not +supported, and some functions such as <function>fflush</function> and +<function>setvbuf</function> will not operate as expected. This +limitation prevents much possible confusion when using filters to +control the appearance of the text window, and has some performance +benefits - especially when the eCos application generates a great deal +of output such as when tracing is enabled. For most applications this +is not a problem, but it is something that developers should be aware +of. + </para> + <para> +The console device is output-only, it does not provide any support for +keyboard input. If the application requires keyboard input then that +should be handled by a separate eCos device package and matching +host-side code. + </para> + </refsect1> + + <refsect1 id="synth-console-install"><title>Installation</title> + <para> +The eCos side of the console device is implemented by the +architectural HAL itself, in the source file +<filename>synth_diag.c</filename>, rather than in a separate device +package. Similarly the host-side implementation, +<function>console.tcl</function>, is part of the architectural HAL's +host-side support. It gets installed automatically alongside the I/O +auxiliary itself, so no separate installation procedure is required. + </para> + </refsect1> + + <refsect1 id="synth-console-tdf"><title>Target Definition File</title> + <para> +The <link linkend="synth-running-tdf">target definition file</link> +can contain a number of entries related to the console device. These +are all optional, they only control the appearance of text output. If +such control is desired then the relevant options should appear in the +body of a <command>synth_device</command> entry: + </para> + <programlisting> +synth_device console { + … +} +</programlisting> + <para> +The first option is <command>appearance</command>, used to control the +appearance of any text generated by the eCos application that does not +match one of the installed filters. This option takes the same +argument as any other filter, for example: + </para> + <programlisting> +synth_device console { + appearance -foreground white -background black + … +} +</programlisting> + <para> +Any number of additional filters can be created with a +<command>filter</command> option, for example: + </para> + <programlisting> +synth_device console { + … + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 + … +} +</programlisting> + <para> +The first argument gives the new filter a name which will be used in +the <link linkend="synth-gui-text">filters dialog</link>. Filter names +should be unique. The second argument is a Tcl regular expression. The +console support will match each line of eCos output against this +regular expression, and if a match is found then the filter will be +used for this line of text. The above example matches any line of +output that begins with <literal>TRACE:</literal>, which corresponds +to the eCos infrastructure's tracing facilities. The remaining options +control the desired appearance for matched text. If some eCos output +matches the regular expressions for several different filters then +only the first match will be used. + </para> + </refsect1> + + <refsect1 id="synth-console-target-config"><title>Target-side + Configuration Options</title> + <para> +There are no target-side configuration options related to the console +device. + </para> + </refsect1> + + <refsect1 id="synth-console-arguments"><title>Command Line Arguments</title> + <para> +The console device does not use any command-line arguments. + </para> + </refsect1> + + <refsect1 id="synth-console-hooks"><title>Hooks</title> + <para> +The console device does not provide any hooks. + </para> + </refsect1> + + <refsect1><title>Additional Tcl Procedures</title> + <para> +The console device does not provide any additional Tcl procedures that +can be used by other scripts. </para> </refsect1> @@ -315,7 +1286,7 @@ behaviour of the final system, not the d #include <cyg/hal/hal_io.h </funcsynopsisinfo> <funcprototype> - <funcdef>int <function>cyg_hal_sys_xyz</function></funcdef> + <funcdef>int <function>cyg_hal_sys_xyzzy</function></funcdef> <varargs> </funcprototype> </funcsynopsis> @@ -410,6 +1381,1179 @@ GNU C library sources. </refentry> <!-- }}} --> +<!-- {{{ New devices - target-side --> + +<refentry id="synth-new-target"> + <refmeta> + <refentrytitle>Writing New Devices - target</refentrytitle> + </refmeta> + <refnamediv> + <refname>Writing New Devices</refname> + <refpurpose>extending the synthetic target, target-side</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo> +#include <cyg/hal/hal_io.h + </funcsynopsisinfo> + + <funcprototype> + <funcdef>int <function>synth_auxiliary_instantiate</function></funcdef> + <paramdef>const char* <parameter>package</parameter></paramdef> + <paramdef>const char* <parameter>version</parameter></paramdef> + <paramdef>const char* <parameter>device</parameter></paramdef> + <paramdef>const char* <parameter>instance</parameter></paramdef> + <paramdef>const char* <parameter>data</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>void <function>synth_auxiliary_xchgmsg</function></funcdef> + <paramdef>int <parameter>device_id</parameter></paramdef> + <paramdef>int <parameter>request</parameter></paramdef> + <paramdef>int <parameter>arg1</parameter></paramdef> + <paramdef>int <parameter>arg2</parameter></paramdef> + <paramdef>const unsigned char* <parameter>txdata</parameter></paramdef> + <paramdef>int <parameter>txlen</parameter></paramdef> + <paramdef>int* <parameter>reply</parameter></paramdef> + <paramdef>unsigned char* <parameter>rxdata</parameter></paramdef> + <paramdef>int* <parameter>rxlen</parameter></paramdef> + <paramdef>int <parameter>max_rxlen</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id="synth-new-target-description"><title>Description</title> + <para> +In some ways writing a device driver for the synthetic target is very +similar to writing one for a real target. Obviously it has to provide +the standard interface for that class of device, so for example an +ethernet device has to provide <function>can_send</function>, +<function>send</function>, <function>recv</function> and similar +functions. Many devices will involve interrupts, so the driver +contains ISR and DSR functions and will call +<function>cyg_drv_interrupt_create</function>, +<function>cyg_drv_interrupt_acknowledge</function>, and related +functions. + </para> + <para> +In other ways writing a device driver for the synthetic target is very +different. Usually the driver will not have any direct access to the +underlying hardware. In fact for some devices the I/O may not involve +real hardware, instead everything is emulated by widgets on the +graphical display. Therefore the driver cannot just peek and poke +device registers, instead it must interact with host-side code by +exchanging message. The synthetic target HAL provides a function +<function>synth_auxiliary_xchgmsg</function> for this purpose. + </para> + <para> +Initialization of a synthetic target device driver is also very +different. On real targets the device hardware already exists when the +driver's initialization routine runs. On the synthetic target it is +first necessary to instantiate the device inside the I/O auxiliary, by +a call to <function>synth_auxiliary_instantiate</function>. That +function performs a special message exchange with the I/O auxiliary, +causing it to load a Tcl script for the desired type of device and run +an instantiation procedure within that script. + </para> + <para> +Use of the I/O auxiliary is optional: if the user does not specify +<option>--io</option> on the command line then the auxiliary will not +be started and hence most I/O operations will not be possible. Device +drivers should allow for this possibility, for example by just +discarding any data that gets written. The HAL exports a flag +<varname>synth_auxiliary_running</varname> which should be checked. + </para> + </refsect1> + + <refsect1 id="synth-new-target-instantiate"><title>Instantiating a Device</title> + <para> +Device instantiation should happen during the C++ prioritized static +constructor phase of system initialization, before control switches to +<function>cyg_user_start</function> and general application code. This +ensures that there is a clearly defined point at which the I/O +auxiliary knows that all required devices have been loaded. It can +then perform various consistency checks and clean-ups, run the user's +<filename>mainrc.tcl</filename> script, and make the main window +visible. + </para> + <para> +For standard devices generic eCos I/O code will call the device +initialization routines at the right time, iterating through the +<varname>DEVTAB</varname> table in a static constructor. The same +holds for network devices and file systems. For more custom devices +code like the following can be used: + </para> + <programlisting> +#include <cyg/infra/cyg_type.h> +class mydev_init { + public: + mydev_init() { + … + } +}; +static mydev_init mydev_init_object CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO); +</programlisting> + <para> +Some care has to be taken because the object +<varname>mydev_init_object</varname> will typically not be referenced +by other code, and hence may get eliminated at link-time. If the code +is part of an eCos package then problems can be avoided by putting the +relevant file in <filename>libextras.a</filename>: + </para> + <programlisting> +cdl_package CYGPKG_DEVS_MINE { + … + compile -library=libextras.a init.cxx +} +</programlisting> + <para> +For devices inside application code the same can be achieved by +linking the relevant module as a <filename>.o</filename> file rather +than putting it in a <filename>.a</filename> library. + </para> + <para> +In the device initialization routine the main operation is a call to +<function>synth_auxiliary_instantiate</function>. This takes five +arguments, all of which should be strings: + </para> + <variablelist> + <varlistentry> + <term><varname>package</varname></term> + <listitem><para> +For device drivers which are eCos packages this should be a directory +path relative to the eCos repository, for example +<literal>devs/eth/synth/ecosynth</literal>. This will allow the I/O +auxiliary to find the various host-side support files for this package +within the install tree. If the device is application-specific and not +part of an eCos package then a NULL pointer can be used, causing the +I/O auxiliary to search for the support files in the current directory +and then in <filename class="directory">~/.ecos/synth</filename> +instead. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>version</varname></term> + <listitem><para> +For eCos packages this argument should be the version of the package +that is being used, for example <literal>current</literal>. A simple +way to get this version is to use the +<function>SYNTH_MAKESTRING</function> macro on the package name. +If the device is application-specific then a NULL pointer should be +used. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>device</varname></term> + <listitem><para> +This argument specifies the type of device being instantiated, for +example <literal>ethernet</literal>. More specifically the I/O +auxiliary will append a <filename>.tcl</filename> suffix, giving +the name of a Tcl script that will handle all I/O requests for the +device. If the application requires several instances of a type +of device then the script will only be loaded once, but the script +will contain an instantiation procedure that will be called for each +device instance. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>instance</varname></term> + <listitem><para> +If it is possible to have multiple instances of a device then this +argument identifies the particular instance, for example +<literal>eth0</literal> or <literal>eth1</literal>. Otherwise a NULL +pointer can be used. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>data</varname></term> + <listitem><para> +This argument can be used to pass additional initialization data from +eCos to the host-side support. This is useful for devices where eCos +configury must control certain aspects of the device, rather than +host-side configury such as the target definition file, because eCos +has compile-time dependencies on some or all of the relevant options. +An example might be an emulated frame buffer where eCos has been +statically configured for a particular screen size, orientation and +depth. There is no fixed format for this string, it will be +interpreted only by the device-specific host-side Tcl script. However +the string length should be limited to a couple of hundred bytes to +avoid possible buffer overflow problems. + </para></listitem> + </varlistentry> + </variablelist> + <para> +Typical usage would look like: + </para> + <programlisting> + if (!synth_auxiliary_running) { + return; + } + id = synth_auxiliary_instantiate("devs/eth/synth/ecosynth", + SYNTH_MAKESTRING(CYGPKG_DEVS_ETH_ECOSYNTH), + "ethernet", + "eth0", + (const char*) 0); +</programlisting> + <para> +The return value will be a device identifier which can be used for +subsequent calls to <function>synth_auxiliary_xchgmsg</function>. If +the device could not be instantiated then <literal>-1</literal> will +be returned. It is the responsibility of the host-side software to +issue suitable diagnostics explaining what went wrong, so normally the +target-side code should fail silently. + </para> + <para> +Once the desired device has been instantiated, often it will be +necessary to do some additional initialization by a message exchange. +For example an ethernet device might need information from the +host-side about the MAC address, the <link +linkend="synth-new-target-interrupts">interrupt vector</link>, and +whether or not multicasting is supported. + </para> + </refsect1> + + <refsect1 id="synth-new-target-xchgmsg"><title>Communicating with a Device</title> + <para> +Once a device has been instantiated it is possible to perform I/O by +sending messages to the appropriate Tcl script running inside the +auxiliary, and optionally getting back replies. I/O operations are +always initiated by the eCos target-side, it is not possible for the +host-side software to initiate data transfers. However the host-side +can raise interrupts, and the interrupt handler inside the target can +then exchange one or more messages with the host. + </para> + <para> +There is a single function to perform I/O operations, +<function>synth_auxiliary_xchgmsg</function>. This takes the following +arguments: + </para> + <variablelist> + <varlistentry> + <term><varname>device_id</varname></term> + <listitem><para> +This should be one of the identifiers returned by a previous +call to <function>synth_auxiliary_instantiate</function>, specifying the +particular device which should perform some I/O. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>request</varname></term> + <listitem><para> +Request are just signed 32-bit integers that identify the particular +I/O operation being requested. There is no fixed set of codes, instead +each type of device can define its own. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>arg1</varname></term> + <term><varname>arg2</varname></term> + <listitem><para> +For some requests it is convenient to pass one or two additional +parameters alongside the request code. For example an ethernet device +could define a multicast-all request, with <varname>arg1</varname> +controlling whether this mode should be enabled or disabled. Both +<varname>arg1</varname> and <varname>arg2</varname> should be signed +32-bit integers, and their values are interpreted only by the +device-specific Tcl script. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>txdata</varname></term> + <term><varname>txlen</varname></term> + <listitem><para> +Some I/O operations may involve sending additional data, for example +an ethernet packet. Alternatively a control operation may require many +more parameters than can easily be encoded in <varname>arg1</varname> +and <varname>arg2</varname>, so those parameters have to be placed in +a suitable buffer and extracted at the other end. +<varname>txdata</varname> is an arbitrary buffer of +<varname>txlen</varname> bytes that should be sent to the host-side. +There is no specific upper bound on the number of bytes that can be +sent, but usually it is a good idea to allocate the transmit buffer +statically and keep transfers down to at most several kilobytes. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>reply</varname></term> + <listitem><para> +If the host-side is expected to send a reply message then +<varname>reply</varname> should be a pointer to an integer variable +and will be updated with a reply code, a simple 32-bit integer. The +synthetic target HAL code assumes that the host-side and target-side +agree on the protocol being used: if the host-side will not send a +reply to this message then the <varname>reply</varname> argument +should be a NULL pointer; otherwise the host-side must always send +a reply code and the <varname>reply</varname> argument must be valid. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>rxdata</varname></term> + <term><varname>rxlen</varname></term> + <listitem><para> +Some operations may involve additional data coming from the host-side, +for example an incoming ethernet packet. <varname>rxdata</varname> +should be a suitably-sized buffer, and <varname>rxlen</varname> a +pointer to an integer variable that will end up containing the number +of bytes that were actually received. These arguments will only be +used if the host-side is expected to send a reply and hence the +<varname>reply</varname> argument was not NULL. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>max_rxlen</varname></term> + <listitem><para> +If a reply to this message is expected and that reply may involve +additional data, <varname>max_rxlen</varname> limits the size of that +reply. In other words, it corresponds to the size of the +<varname>rxdata</varname> buffer. + </para></listitem> + </varlistentry> + </variablelist> + <para> +Most I/O operations involve only some of the arguments. For example +transmitting an ethernet packet would use the +<varname>request</varname>, <varname>txdata</varname> and +<varname>txlen</varname> fields (in addition to +<varname>device_id</varname> which is always required), but would not +involve <varname>arg1</varname> or <varname>arg2</varname> and no +reply would be expected. Receiving an ethernet packet would involve +<varname>request</varname>, <varname>rxdata</varname>, +<varname>rxlen</varname> and <varname>max_rxlen</varname>; in addition +<varname>reply</varname> is needed to get any reply from the host-side +at all, and could be used to indicate whether or not any more packets +are buffered up. A control operation such as enabling multicast mode +would involve <varname>request</varname> and <varname>arg1</varname>, +but none of the remaining arguments. + </para> + </refsect1> + + <refsect1 id="synth-new-target-interrupts"><title>Interrupt Handling</title> + <para> +Interrupt handling in the synthetic target is much the same as on a +real target. An interrupt object is created using +<function>cyg_drv_interrupt_create</function>, attached, and unmasked. +The emulated device - in other words the Tcl script running inside the +I/O auxiliary - can raise an interrupt. Subject to interrupts being +disabled and the appropriate vector being masked, the system will +invoke the specified ISR function. The synthetic target HAL +implementation does have some limitations: there is no support for +nested interrupts, interrupt priorities, or a separate interrupt +stack. Supporting those might be appropriate when targetting a +simulator that attempts to model real hardware accurately, but not for +the simple emulation provided by the synthetic target. + </para> + <para> +Of course the actual implementation of the ISR and DSR functions will +be rather different for a synthetic target device driver. For real +hardware the device driver will interact with the device by reading +and writing device registers, managing DMA engines, and the like. A +synthetic target driver will instead call +<function>synth_auxiliary_xchgmsg</function> to perform the I/O +operations. + </para> + <para> +There is one other significant difference between interrupt handling +on the synthetic target and on real hardware. Usually the eCos code +will know which interrupt vectors are used for which devices. That +information is fixed when the target hardware is designed. With the +synthetic target interrupt vectors are assigned to devices on the host +side, either via the target definition file or dynamically when the +device is instantiated. Therefore the initialization code for a +target-side device driver will need to request interrupt vector +information from the host-side, via a message exchange. Such interrupt +vectors will be in the range 1 to 31 inclusive, with interrupt 0 being +reserved for the real-time clock. + </para> + </refsect1> + +</refentry> + +<!-- }}} --> +<!-- {{{ New devices - host-side --> + +<refentry id="synth-new-host"> + <refmeta> + <refentrytitle>Writing New Devices - host</refentrytitle> + </refmeta> + <refnamediv> + <refname>Writing New Devices</refname> + <refpurpose>extending the synthetic target, host-side</refpurpose> + </refnamediv> + + <refsect1 id="synth-new-host-description"><title>Description</title> + <para> +On the host-side adding a new device means writing a Tcl/Tk script +that will handle instantiation and subsequent requests from the +target-side. These scripts all run in the same full interpreter, +extended with various commands provided by the main I/O auxiliary +code, and running in an overall GUI framework. Some knowledge of +programming with Tcl/Tk is required to implement host-side device +support. + </para> + <para> +Some devices can be implemented entirely using a Tcl/Tk script. For +example, if the final system will have some buttons then those can be +emulated in the synthetic target using a few Tk widgets. A simple +emulation could just have the right number of buttons in a row. A more +advanced emulation could organize the buttons with the right layout, +perhaps even matching the colour scheme, the shapes, and the relative +sizes. With other devices it may be necessary for the Tcl script to +interact with an external program, because the required functionality +cannot easily be accessed from a Tcl script. For example interacting +with a raw ethernet device involves some <function>ioctl</function> +calls, which is easier to do in a C program. Therefore the +<filename>ethernet.tcl</filename> script which implements the +host-side ethernet support spawns a separate program +<filename>rawether</filename>, written in C, that performs the +low-level I/O. Raw ethernet access usually also requires root +privileges, and running a small program <filename>rawether</filename> +with such privileges is somewhat less of a security risk than the +whole eCos application, the I/O auxiliary, and various dynamically +loaded Tcl scripts. + </para> + <para> +Because all scripts run in a single interpreter, some care has +to be taken to avoid accidental sharing of global variables. The best +way to avoid problems is to have each script create its own Tcl +namespace, so for example the <filename>ethernet.tcl</filename> script +creates a namespace <varname>ethernet::</varname> and all variables +and procedures reside in this namespace. Similarly the I/O auxiliary +itself makes use of a <varname>synth::</varname> namespace. + </para> + </refsect1> + + <refsect1 id="synth-new-host-build"><title>Building and Installation</title> + <para> +When an eCos device driver or application code instantiates a device, +the I/O auxiliary will attempt to load a matching Tcl script. The +third argument to <function>synth_auxiliary_instantiate</function> +specifies the type of device, for example <literal>ethernet</literal>, +and the I/O auxiliary will append a <filename>.tcl</filename> suffix +and look for a script <filename>ethernet.tcl</filename>. + </para> + <para> +If the device being instantiated is application-specific rather than +part of an eCos package, the I/O auxiliary will look first in the +current directory, then in <filename +class="directory">~/.ecos/synth</filename>. If it is part of an eCos +package then the auxiliary will expect to find the Tcl script and any +support files below <filename +class="directory">libexec/ecos</filename> in the install tree - note +that the same install tree must be used for the I/O auxiliary itself +and for any device driver support. The directory hierarchy below +<filename class="directory">libexec/ecos</filename> matches the +structure of the eCos repository, allowing multiple versions of a +package to be installed to allow for incompatible protocol changes. + </para> + <para> +The preferred way to build host-side software is to use +<command>autoconf</command> and <command>automake</command>. Usually +this involves little more than copying the +<filename>acinclude.m4</filename>, <filename>configure.in</filename> +and <filename>Makefile.am</filename> files from an existing package, +for example the synthetic target ethernet driver, and then making +minor edits. In <filename>acinclude.m4</filename> it may be necessary +to adjust the path to the root of the repository. +<filename>configure.in</filename> may require a similar change, and +the <function>AC_INIT</function> macro invocation will have to be +changed to match one of the files in the new package. A critical macro +in this file is <filename>ECOS_PACKAGE_DIRS</filename> which will set +up the correct install directory. <filename>Makefile.am</filename> may +require some more changes, for example to specify the data files that +should be installed (including the Tcl script). These files should +then be processed using <command>aclocal</command>, +<command>autoconf</command> and <command>automake</command> in that +order. Actually building the software then just involves +<command>configure</command>, <command>make</command> and +<command>make install</command>, as per the instructions in the +toplevel <filename>README.host</filename> file. + </para> + <para> +To assist developers, if the environment variable +<envar>ECOSYNTH_DEVEL</envar> is set then a slightly different +algorithm is used for locating device Tcl scripts. Instead of looking +only in the install tree the I/O auxiliary will also look in the +source tree, and if the script there is more recent than the installed +version it will be used in preference. This allows developers to +modify the master copy without having to run <command>make +install</command> all the time. + </para> + <para> +If a script needs to know where it has been installed it can examine +the Tcl variable <varname>synth::device_install_dir</varname> . This +variable gets updated whenever a script is loaded, so if the +value may be needed later it should be saved away in a device-specific +variable. + </para> + </refsect1> + + <refsect1 id="synth-new-host-instantiation"><title>Instantiation</title> + <para> +The I/O auxiliary will <command>source</command> the device-specific +Tcl script when the eCos application first attempts to instantiate a +device of that type. The script should return a procedure that will be +invoked to instantiate a device. + </para> + <programlisting> +namespace eval ethernet { + … + proc instantiate { id instance data } { + … + return ethernet::handle_request + } +} +return ethernet::instantiate +</programlisting> + <para> +The <varname>id</varname> argument is a unique identifier for this +device instance. It will also be supplied on subsequent calls to the +request handler, and will match the return value of +<function>synth_auxiliary_instantiate</function> on the target side. A +common use for this value is as an array index to support multiple +instances of this types of device. The <varname>instance</varname> and +<varname>data</varname> arguments match the corresponding arguments to +<function>synth_auxiliary_instantiate</function> on the target side, so +a typical value for <varname>instance</varname> would be +<literal>eth0</literal>, and <varname>data</varname> is used to pass +arbitrary initialization parameters from target to host. + </para> + <para> +The actual work done by the instantiation procedure is obviously +device-specific. It may involve allocating an <link +linkend="synth-new-host-interrupts">interrupt vector</link>, adding a +device-specific subwindow to the display, opening a real Linux device, +establishing a socket connection to some server, spawning a separate +process to handle the actual I/O, or a combination of some or all of +the above. + </para> + <para> +If the device is successfully instantiated then the return value +should be a handler for subsequent I/O requests. Otherwise the return +value should be an empty string, and on the target-side the +<function>synth_auxiliary_instantiate</function> call will return +<literal>-1</literal>. The script is responsible for providing +<link linkend="synth-new-host-output">diagnostics</link> explaining +why the device could not be instantiated. + </para> + </refsect1> + + <refsect1 id="synth-new-host-requests"><title>Handling Requests</title> + <para> +When the target-side calls +<function>synth_auxiliary_xchgmsg</function>, the I/O auxiliary will +end up calling the request handler for the appropriate device instance +returned during instantiation: + </para> + <programlisting> +namespace eval ethernet { + … + proc handle_request { id request arg1 arg2 txdata txlen max_rxlen } { + … + if { <some condition> } { + synth::send_reply <error code> 0 "" + return + } + … + synth::send_reply <reply code> $packet_len $packet + } + … +} +</programlisting> + <para> +The <varname>id</varname> argument is the same device id that was +passed to the instantiate function, and is typically used as an array +index to access per-device data. The <varname>request</varname>, +<varname>arg1</varname>, <varname>arg2</varname>, and +<varname>max_rxlen</varname> are the same values that were passed to +<function>synth_auxiliary_xchgmsg</function> on the target-side, +although since this is a Tcl script obviously the numbers have been +converted to strings. The <varname>txdata</varname> buffer is raw data +as transmitted by the target, or an empty string if the I/O operation +does not involve any additional data. The Tcl procedures +<command>binary scan</command>, <command>string index</command> and +<command>string range</command> may be found especially useful when +manipulating this buffer. <varname>txlen</varname> is provided for +convenience, although <command>string length $txdata</command> would +give the same information. + </para> + <para> +The code for actually processing the request is of course device +specific. If the target does not expect a reply then the request +handler should just return when finished. If a reply is expected then +there should be a call to <command>synth::send_reply</command>. The +first argument is the reply code, and will be turned into a 32-bit +integer on the target side. The second argument specifies the length +of the reply data, and the third argument is the reply data itself. +For some devices the Tcl procedure <command>binary format</command> +may prove useful. If the reply involves just a code and no additional +data, the second and third arguments should be <literal>0</literal> +and an empty string respectively. + </para> + <para> +Attempts to send a reply when none is expected, fail to send a reply +when one is expected, or send a reply that is larger than the +target-side expects, will all be detected by the I/O auxiliary and +result in run-time error messages. + </para> + <para> +It is not possible for the host-side code to send unsolicited messages +to the target. If host-side code needs attention from the target, for +example because some I/O operation has completed, then an interrupt +should be raised. + </para> + </refsect1> + + <refsect1 id="synth-new-host-interrupts"><title>Interrupts</title> + <para> +The I/O auxiliary provides a number of procedures for interrupt +handling. + </para> + <programlisting> +synth::interrupt_allocate <name> +synth::interrupt_get_max +synth::interrupt_get_devicename <vector> +synth::interrupt_raise <vector> +</programlisting> + <para> +<command>synth::interrupt_allocate</command> is normally called during +device instantiation, and returns the next free interrupt vector. This +can be passed on to the target-side device driver in response to a +suitable request, and it can then install an interrupt handler on that +vector. Interrupt vector <literal>0</literal> is used within the +target-side code for the real-time clock, so the allocated vectors +will start at <literal>1</literal>. The argument identifies the +device, for example <literal>eth0</literal>. This is not actually used +internally, but can be accessed by user-initialization scripts that +provide some sort of interrupt monitoring facility (typically via the +<literal>interrupt</literal> <link +linkend="synth-new-host-hooks">hook</link>). It is possible for a +single device to allocate multiple interrupt vectors, but the +synthetic target supports a maximum of 32 such vectors. + </para> + <para> +<command>synth::interrupt_get_max</command> returns the highest +interrupt vector that has been allocated, or <literal>0</literal> if +there have been no calls to +<command>synth::interrupt_allocate</command>. +<command>synth::interrupt_get_devicename</command> returns the string +that was passed to <command>synth::interrupt_allocate</command> when +the vector was allocated. + </para> + <para> +<command>synth::interrupt_raise</command> can be called any time after +initialization. The argument should be the vector returned by +<command>synth::interrupt_allocate</command> for this device. It will +activate the normal eCos interrupt handling mechanism so, subject to +interrupts being enabled and this particular interrupt not being +masked out, the appropriate ISR will run. + </para> + <note><para> +At this time it is not possible for a device to allocate a specific +interrupt vector. The order in which interrupt vectors are assigned to +devices effectively depends on the order in which the eCos devices get +initialized, and that may change if the eCos application is rebuilt. A +future extension may allow devices to allocate specific vectors, thus +making things more deterministic. However that will introduce new +problems, in particular the code will have to start worrying about +requests for vectors that have already been allocated. + </para></note> + </refsect1> + + <refsect1 id="synth-new-host-args"><title>Flags and Command Line Arguments</title> + <para> +The generic I/O auxiliary code will process the standard command line +arguments, and will set various flag variables accordingly. Some of +these should be checked by device-specific scripts. + </para> + <variablelist> + <varlistentry> + <term><varname>synth::flag_gui</varname></term> + <listitem><para> +This is set when the I/O auxiliary is operating in graphical mode +rather than text mode. Some functionality such as filters and the GUI +layout are only available in graphical mode. + </para> + <programlisting> + if { $synth::flag_gui } { + … + } +</programlisting></listitem> + </varlistentry> + <varlistentry> + <term><varname>synth::flag_verbose</varname></term> + <listitem><para> +The user has requested additional information during startup. Each +device driver can decide how much additional information, if any, +should be produced. + </para></listitem> + </varlistentry> + <varlistentry> + <term><varname>synth::flag_keep_going</varname></term> + <listitem><para> +The user has specified <option>-k</option> or +<option>--keep-going</option>, so even if an error occurs the I/O +auxiliary and the various device driver scripts should continue running +if at all possible. Diagnostics should still be generated. + </para></listitem> + </varlistentry> + </variablelist> + <para> +Some scripts may want to support additional command line arguments. +This facility should be used with care since there is no way to +prevent two different scripts from trying to use the same argument. +The following Tcl procedures are available: + </para> + <programlisting> +synth::argv_defined <name> +synth::argv_get_value <name> +</programlisting> + <para> +<command>synth::argv_defined</command> returns a boolean to indicate +whether or not a particular argument is present. If the argument is +the name part of a name/value pair, an <literal>=</literal> character +should be appended. Typical uses might be: + </para> + <programlisting> + if { [synth::argv_defined "-o13"] } { + … + } + + if { [synth::argv_defined "-mark="] } { + … + } +</programlisting> + <para> +The first call checks for a flag <literal>-o13</literal> or +<literal>--o13</literal> - the code treats options with single and +double hyphens interchangeably. The second call checks for an argument +of the form <literal>-mark=<value></literal> or a pair of +arguments <literal>-mark <value></literal>. The value part of a +name/value pair can be obtained using +<command>synth::argv_get_value</command>; + </para> + <programlisting> + variable speed 1 + if { [synth::argv_defined "-mark="] } { + set mark [synth::argv_get_value "-mark="] + if { ![string is integer $mark] || ($mark < 1) || ($mark > 9) } { + <issue diagnostic> + } else { + set speed $mark + } + } +</programlisting> + <para> +<command>synth::argv_get_value</command> should only be used after a +successful call to <command>synth::argv_defined</command>. +At present there is no support for some advanced forms of command line +argument processing. For example it is not possible to repeat a +certain option such as <option>-v</option> or +<option>--verbose</option>, with each occurrence increasing the level +of verbosity. + </para> + <para> +If a script is going to have its own set of command-line arguments +then it should give appropriate details if the user specifies +<option>--help</option>. This involves a hook function: + </para> + <programlisting> +namespace eval my_device { + proc help_hook { } { + puts " -o13 : activate the omega 13 device" + puts " -mark <speed> : set speed. Valid values are 1 to 9." + } + + synth::hook_add "help" my_device::help_hook +} +</programlisting> + </refsect1> + + <refsect1 id="synth-new-host-tdf"><title>The Target Definition File</title> + <para> +Most device scripts will want to check entries in the target +definition file for run-time configuration information. The Tcl +procedures for this are as follows: + </para> + <programlisting> +synth::tdf_has_device <name> +synth::tdf_get_devices +synth::tdf_has_option <devname> <option> +synth::tdf_get_option <devname> <option> +synth::tdf_get_options <devname> <option> +synth::tdf_get_all_options <devname> +</programlisting> + <para> +<command>synth::tdf_has_device</command> can be used to check whether +or not the target definition file had an entry +<literal>synth_device <name></literal>. Usually the name +will match the type of device, so the +<filename>console.tcl</filename> script will look for a target +definition file entry <literal>console</literal>. +<command>synth::tdf_get_devices</command> returns a list of all +device entries in the target definition file. + </para> + <para> +Once it is known that the target definition file has an entry for a +certain device, it is possible to check for options within the entry. +<command>synth::tdf_has_option</command> just checks for the presence, +returning a boolean: + </para> + <programlisting> + if { [synth::tdf_has_option "console" "appearance"] } { + … + } +</programlisting> + <para> +<command>synth::tdf_get_option</command> returns a list of all the +arguments for a given option. For example, if the target definition +file contains an entry: + </para> + <programlisting> +synth_device console { + appearance -foreground white -background black + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 + filter xyzzy {.*xyzzy.*} -foreground PapayaWhip +} +</programlisting> + <para> +A call +<command>synth::tdf_get_option console appearance</command> +will return the list <literal>{-foreground white -background +black}</literal>. This list can be manipulated using standard Tcl routines +such as <command>llength</command> and <command>lindex</command>. Some +options can occur multiple times in one entry, for example +<option>filter</option> in the <literal>console</literal> entry. +<command>synth::tdf_get_options</command> returns a list of lists, +with one entry for each option occurrence. +<command>synth::tdf_get_all_options</command> returns a list of lists +of all options. This time each entry will include the option name as +well. + </para> + <para> +The I/O auxiliary will not issue warnings about entries in the target +definition file for devices which were not loaded, unless the +<option>-v</option> or <option>--verbose</option> command line +argument was used. This makes it easier to use a single target +definition file for different applications. However the auxiliary will +issue warnings about options within an entry that were ignored, +because often these indicate a typing mistake of some sort. Hence a +script should always call <command>synth::tdf_has_option</command>, +<command>synth:;tdf_get_option</command> or +<command>synth::tdf_get_options</command> for all valid options, even +if some of the options preclude the use of others. + </para> + </refsect1> + + <refsect1 id="synth-new-host-hooks"><title>Hooks</title> + <para> +Some scripts may want to take action when particular events occur, for +example when the eCos application has exited and there is no need for +further I/O. This is supported using hooks: + </para> + <programlisting> +namespace eval my_device { + … + proc handle_ecos_exit { arg_list } { + … + } + synth::hook_add "ecos_exit" my_device::handle_ecos_exit +} +</programlisting> + <para> +It is possible for device scripts to add their own hooks and call all +functions registered for those hooks. A typical use for this is by +user initialization scripts that want to monitor some types of I/O. +The available Tcl procedures for manipulating hooks are: + </para> + <programlisting> +synth::hook_define <name> +synth::hook_defined <name> +synth::hook_add <name> <function> +synth::hook_call <name> <args> +</programlisting> + <para> +<command>synth::hook_define</command> creates a new hook with the +specified name. This hook must not already exist. +<command>synth::hook_defined</command> can be used to check for the +existence of a hook. <command>synth::hook_add</command> allows other +scripts to register a callback function for this hook, and +<command>synth::hook_call</command> allows the owner script to invoke +all such callback functions. A hook must already be defined before a +callback can be attached. Therefore typically device scripts will only +use standard hooks and their own hooks, not hooks created by some +other device, because the order of device initialization is not +sufficiently defined. User scripts run from +<filename>mainrc.tcl</filename> can use any hooks that have been +defined. + </para> + <para> +<command>synth::hook_call</command> takes an arbitrary list of +arguments, for example: + </para> + <programlisting> + synth::hook_call "ethernet_rx" "eth0" $packet +</programlisting> + <para> +The callback function will always be invoked with a single argument, +a list of the arguments that were passed to +<command>synth::hook_call</command>: + </para> + <programlisting> + proc rx_callback { arg_list } { + set device [lindex $arg_list 0] + set packet [lindex $arg_list 1] + } +</programlisting> + <para> +Although it might seem more appropriate to use Tcl's +<command>eval</command> procedure and have the callback functions +invoked with the right number of arguments rather than a single list, +that would cause serious problems if any of the data contained special +characters such as <literal>[</literal> or <literal>$</literal>. The +current implementation of hooks avoids such problems, at the cost of +minor inconvenience when writing callbacks. + </para> + <para> +A number of hooks are defined as standard. Some devices will add +additional hooks, and the device-specific documentation should be +consulted for those. User scripts can add their own hooks if desired. + </para> + <variablelist> + <varlistentry> + <term><literal>exit</literal></term> + <listitem><para> +This hook is called just before the I/O auxiliary exits. Hence it +provides much the same functionality as <function>atexit</function> in +C programs. The argument list passed to the callback function will be +empty. + </para></listitem> + </varlistentry> + <varlistentry> + <term><literal>ecos_exit</literal></term> + <listitem><para> +This hook is called when the eCos application has exited. It is used +mainly to shut down I/O operations: if the application is no longer +running then there is no point in raising interrupts or storing +incoming packets. The callback argument list will be empty. + </para></listitem> + </varlistentry> + <varlistentry> + <term><literal>ecos_initialized</literal></term> + <listitem><para> +The synthetic target HAL will send a request to the I/O auxiliary once +the static constructors have been run. All devices should now have been +instantiated. A script could now check how many instances there are of +a given type of device, for example ethernet devices, and create a +little monitor window showing traffic on all the devices. The +<literal>ecos_initialized</literal> callbacks will be run just before +the user's <filename>mainrc.tcl</filename> script. The callback +argument list will be empty. + </para></listitem> + </varlistentry> + <varlistentry> + <term><literal>help</literal></term> + <listitem><para> +This hook is also invoked once static constructors have been run, but +only if the user specified <option>-h</option> or +<option>--help</option>. Any scripts that add their own command line +arguments should add a callback to this hook which outputs details of +the additional arguments. The callback argument list will be empty. + </para></listitem> + </varlistentry> + <varlistentry> + <term><literal>interrupt</literal></term> + <listitem><para> +Whenever a device calls <command>synth::interrupt_raise</command> the +<literal>interrupt</literal> hook will be called with a single +argument, the interrupt vector. The main use for this is to allow +user scripts to monitor interrupt traffic. + </para></listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="synth-new-host-output"><title>Output and Filters</title> + <para> +Scripts can use conventional facilities for sending text output to the +user, for example calling <command>puts</command> or directly +manipulating the central text widget +<varname>.main.centre.text</varname>. However in nearly all cases it +is better to use output facilities provided by the I/O auxiliary +itself: + </para> + <programlisting> +synth::report <msg> +synth::report_warning <msg> +synth::report_error <msg> +synth::internal_error <msg> +synth::output <msg> <filter> +</programlisting> + <para> +<command>synth::report</command> is intended for messages related to +the operation of the I/O auxiliary itself, especially additional +output resulting from <option>-v</option> or +<option>--verbose</option>. If running in text mode the output will go +to standard output. If running in graphical mode the output will go to +the central text window. In both modes, use of <option>-l</option> or +<option>--logfile</option> will modify the behaviour. + </para> + <para> +<command>synth::report_warning</command>, +<command>synth::report_error</command> and +<command>synth::internal_error</command> have the obvious meaning, +including prepending strings such as <literal>Warning:</literal> and +<literal>Error:</literal>. When the eCos application informs the I/O +auxiliary that all static constructors have run, if at that point +there have been any calls to <command>synth::error</command> then the +I/O auxiliary will exit. This can be suppressed with command line +arguments <option>-k</option> or <option>--keep-going</option>. +<command>synth::internal_error</command> will output some information +about the current state of the I/O auxiliary and then exit +immediately. Of course it should never be necessary to call this +function. + </para> + <para> +<command>synth::output</command> is the main routine for outputting +text. The second argument identifies a filter. If running in text mode +the filter is ignored, but if running in graphical mode the filter can +be used to control the appearance of this output. A typical use would +be: + </para> + <programlisting> + synth::output $line "console" +</programlisting> + <para> +This outputs a single line of text using the +<literal>console</literal> filter. If running in graphical mode the +default appearance of this text can be modified with the +<option>appearance</option> option in the +<command>synth_device console</command> entry of the target +definition file. The <guimenuitem>System filters</guimenuitem> menu +option can be used to change the appearance at run-time. + </para> + <para> +Filters should be created before they are used. The procedures +available for this are: + </para> + <programlisting> +synth::filter_exists <name> +synth::filter_get_list +synth::filter_add <name> [options] +synth::filter_parse_options <options> <parsed_options> <message> +synth::filter_add_parsed <name> <parsed_options> +</programlisting> + <para> +<command>synth::filter_exists</command> can be used to check whether +or not a particular filter already exists: creating two filters with +the same name is not allowed. +<command>synth::filter_get_list</command> returns a list of the +current known filters. <command>synth::filter_add</command> can be +used to create a new filter. The first argument names the new filter, +and the remaining arguments control the initial appearance. A typical +use might be: + </para> + <programlisting> + synth::filter_add "my_device_tx" -foreground yellow -hide 1 +</programlisting> + <para> +It is assumed that the supplied arguments are valid, which typically +means that they are hard-wired in the script. If instead the data +comes out of a configuration file and hence may be invalid, the +I/O auxiliary provides a parsing utility. Typical usage would be: + </para> + <programlisting> + array set parsed_options [list] + set message "" + if { ![synth::filter_parse_options $console_appearance parsed_options message] } { + synth::report_error \ + "Invalid entry in target definition file $synth::target_definition\ + \n synth_device \"console\", entry \"appearance\"\n$message" + } else { + synth::filter_add_parsed "console" parsed_options + } +</programlisting> + <para> +On success <varname>parsed_options</varname> will be updated with an +internal representation of the desired appearance, which can then be +used in a call to <command>synth::filter_add_parsed</command>. On +failure <varname>message</varname> will be updated with details of the +parsing error that occurred. + </para> + </refsect1> + + <refsect1 id="synth-new-host-gui"><title>The Graphical Interface</title> + <para> +When the I/O auxiliary is running in graphical mode, many scripts will +want to update the user interface in some way. This may be as simple +as adding another entry to the help menu for the device, or adding a +new button to the toolbar. It may also involve adding new subwindows, +or even creating entire new toplevel windows. These may be simple +monitor windows, displaying additional information about what is going +on in the system in a graphical format. Alternatively they may emulate +actual I/O operations, for example button widgets could be used to +emulate real physical buttons. + </para> + <para> +The I/O auxiliary does not provide many procedures related to the +graphical interface. Instead it is expected that scripts will just +update the widget hierarchy directly. + </para> + <informalfigure PgWide=1> + <mediaobject> + <imageobject> + <imagedata fileref="layout.gif" format="gif" Scalefit=1 Align="Center"> + </imageobject> + </mediaobject> + </informalfigure> + <para> +So adding a new item to the <guimenu>Help</guimenu> menu involves a +<command>.menubar.help add</command> operation with suitable +arguments. Adding a new button to the toolbar involves creating a +child window in <varname>.toolbar</varname> and packing it +appropriately. Scripts can create their own subwindows and then pack +it into one of <varname>.main.nw</varname>, +<varname>.main.n</varname>, <varname>.main.ne</varname>, +<varname>.main.w</varname>, <varname>.main.e</varname>, +<varname>.main.sw</varname>, <varname>.main.s</varname> or +<varname>.main.se</varname>. Normally the user should be allowed to +<link linkend="synth-gui-layout">control</link> this via the target +definition file. The central window <varname>.main.centre</varname> +should normally be left alone by other scripts since it gets used for +text output. + </para> + <para> +The following graphics-related utilities may be found useful: + </para> + <programlisting> +synth::load_image <image name> <filename> +synth::register_ballon_help <widget> <message> +synth::handle_help <URL> +</programlisting> + <para> +<command>synth::load_image</command> can be used to add a new image to +the current interpreter. If the specified file has a +<filename>.xbm</filename> extension then the image will be a +monochrome bitmap, otherwise it will be a colour image of some sort. +A boolean will be returned to indicate success or failure, and +suitable diagnostics will be generated if necessary. + </para> + <para> +<command>synth::register_balloon_help</command> provides balloon help +for a specific widget, usually a button on the toolbar. + </para> + <para> +<command>synth::handle_help</command> is a utility routine that can be +installed as the command for displaying online help, for example: + </para> + <programlisting> + .menubar.help add command -label "my device" -command \ + [list synth::handle_help "file://$path"] +</programlisting> + </refsect1> + +</refentry> + +<!-- }}} --> <!-- {{{ Porting --> <refentry id="synth-porting"> @@ -418,7 +2562,7 @@ GNU C library sources. </refmeta> <refnamediv> <refname>Porting</refname> - <refpurpose>The eCos synthetic target</refpurpose> + <refpurpose>Adding support for other hosts</refpurpose> </refnamediv> <refsect1 id="synth-porting-description"><title>Description</title> @@ -430,7 +2574,7 @@ straightforward, for example a port to L an x86. Porting to Unix or Unix-like operating systems other than Linux may be possible, but would involve more effort. Porting to a completely different operating system such as Windows would be very -difficult. The text below completes the eCos Porting Guide. +difficult. The text below complements the eCos Porting Guide. </para> </refsect1> @@ -445,28 +2589,28 @@ Most of the changes should be pretty obv processor some new data types will be needed in the <filename>basetype.h</filename> header file. It will also be necessary to update the toplevel <filename>ecos.db</filename> database with an -entry for the new HAL package, and a new target entry will be needed -as well. +entry for the new HAL package, and a new target entry will be needed. </para> <para> -Obviously a different processor will have different register sets -and calling conventions, so the code for saving and restoring thread +Obviously a different processor will have different register sets and +calling conventions, so the code for saving and restoring thread contexts and for implementing <function>setjmp</function> and <function>longjmp</function> will need to be updated. The exact way of -performing Linux system calls will also vary: on i386linux this -usually involves pushing some registers on the stack and then -executing an <literal>int 0x080</literal> trap instruction, but -on a different processor the arguments might be passed in registers -instead and certainly a different trap instruction will be used. The -startup code is also written in assembler, but needs to do little more -than jump to the main <function>linux_entry</function> function -provided by the architectural synthetic target HAL package. +performing Linux system calls will vary: on x86 linux this usually +involves pushing some registers on the stack and then executing an +<literal>int 0x080</literal> trap instruction, but on a different +processor the arguments might be passed in registers instead and +certainly a different trap instruction will be used. The startup code +is written in assembler, but needs to do little more than extract the +process' argument and environment variables and then jump to the main +<function>linux_entry</function> function provided by the +architectural synthetic target HAL package. </para> <para> The header file <filename>hal_io.h</filename> provided by the architectural HAL package provides various structure definitions, function prototypes, and macros related to system calls. These are -correct for i386linux, but there may be problems on other processors. +correct for x86 linux, but there may be problems on other processors. For example a structure field that is currently defined as a 32-bit number may in fact may be a 64-bit number instead. </para> @@ -484,7 +2628,10 @@ but usually eCos applications can and sh <para> Other HAL functionality such as interrupt handling, diagnostics, and the system clock are provided by the architectural HAL package and -should work on different processors with few if any changes. +should work on different processors with few if any changes. There may +be some problems in the code that interacts with the I/O auxiliary +because of lurking assumptions about endianness or the sizes of +various data types. </para> <para> When porting to other processors, a number of sources of information @@ -499,11 +2646,11 @@ provides the startup code and the system <refsect1 id="synth-porting-unix"><title>Other Unix Platforms</title> <para> Porting to a Unix or Unix-like operating system other than Linux would -be somewhat more involved. The first requirement involves toolchains: -the GNU compilers, gcc and g++, must definitely be used; use of other -GNU tools such as the linker may be needed as well, because eCos -depends on functionality such as prioritizing C++ static constructors, -and other linkers may not implement this or may implement it in a +be somewhat more involved. The first requirement is toolchains: the +GNU compilers, gcc and g++, must definitely be used; use of other GNU +tools such as the linker may be needed as well, because eCos depends +on functionality such as prioritizing C++ static constructors, and +other linkers may not implement this or may implement it in a different and incompatible way. A closely related requirement is the use of ELF format for binary executables: if the operating system still uses an older format such as COFF then there are likely to be @@ -529,6 +2676,13 @@ simple system calls, and instead wrapper implemented at the variant HAL level. </para> <para> +The generic I/O auxiliary code should be fairly portable to other Unix +platforms. However some of the device drivers may contain code that is +specific to Linux, for example the <literal>PF_PACKET</literal> socket +address family and the ethertap virtual tunnelling interface. These +may prove quite difficult to port. + </para> + <para> The remaining porting task is to implement one or more platform HAL packages, one per processor type that is supported. This should involve much the same work as a port to <link @@ -541,14 +2695,6 @@ However there is still a good chance tha been ported already, so its source code may contain much useful information. </para> - <caution><para> -Users should be aware that future enhancements to the synthetic target -code, especially in areas related to I/O, may be much more closely -tied to Linux. For example access to ethernet facilities might be -implemented using the <literal>PF_PACKET</literal> socket address -family, or the virtual tunnelling interface. Porting such code to -other Unix operating systems may prove rather more difficult. - </para></caution> </refsect1> <refsect1 id="synth-porting-other"><title>Windows Platforms</title>
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/Makefile.am @@ -0,0 +1,92 @@ +## Process this file with automake to produce Makefile.in +## ===================================================================== +## +## Makefile.am +## +## Build support for the host-side synthetic target support, +## the arch package. +## +## +## ===================================================================== +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +## ===================================================================== +#######DESCRIPTIONBEGIN#### +## +## Author(s): bartv +## Contact(s): bartv +## Date: 2002/08/06 +## Version: 0.01 +## +######DESCRIPTIONEND#### +## ===================================================================== + +AUTOMAKE_OPTIONS = 1.3 foreign + +## Only some platforms are supported. Having the configure script throw +## an error when attempting to configure on an unsupported platform +## would be a mistake, since that would prevent any configury from +## the toplevel on unsupported platforms. Instead an automake conditional +## is used, leading to null makefiles on unsupported platforms. + +if SUPPORTED + +AM_CFLAGS = @ecos_CFLAGS@ -DECOSYNTH_VERSION=\"@VERSION@\" \ + -DECOS_REPOSITORY=\"@ECOS_REPOSITORY@\" \ + -DLIBEXECDIR=\"$(libexecdir)\" \ + -DPACKAGE_DIR=\"@PACKAGE_DIR@\" \ + -DPACKAGE_VERSION=\"@PACKAGE_VERSION@\" \ + -DPACKAGE_INSTALL=\"@PACKAGE_INSTALL@\" +AM_CXXFLAGS = @ecos_CXXFLAGS@ +INCLUDES = @ecos_INCLUDES@ +LIBS = @ecos_LIBS@ @ecos_LDADD@ + +## The synthetic target support consists of a single program ecosynth, +## a number of Tcl scripts, and some additional data files. These are +## all installed in a single directory $(libexec)/ecos/<package>_<version>/ +## Neither the ecosynth executable nor any of the scripts are directly +## executable, instead ecosynth gets fork()'d/execve()'d by the eCos +## application so $(libexec) is appropriate. Strictly speaking the +## Tcl scripts and data files are architecture-independent so should +## probably be installed in an analogous directory below $(datadir), +## but that would add more directories for little real gain. The scripts +## are treated as data files since they should not be executed directly, +## i.e. they should not be installed with the execute bit set. + +synthdir = $(libexecdir)/ecos/@PACKAGE_INSTALL@ +synth_PROGRAMS = ecosynth +synth_DATA = ecosynth.tcl default.tdf user_initrc.tcl user_mainrc.tcl \ + console.tcl \ + ecosicon.xbm ecosiconmask.xbm tick_yes.xbm tick_no.xbm \ + save.xbm cut.xbm copy.xbm paste.xbm help.xbm running1.ppm \ + saveall.xbm + +ecosynth_SOURCES = ecosynth.c +ecosynth_LDADD = @ecos_tk_libs@ + +## Manual dependencies +ecosynth.$(OBJEXT) : Makefile ../src/synth_protocol.h + +endif
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/Makefile.in @@ -0,0 +1,449 @@ +# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am + +# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +######COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos synthetic target support. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ---------------------------------------------------------------------------- +# +######COPYRIGHTEND#### +#######DESCRIPTIONBEGIN#### +######DESCRIPTIONEND#### + + +SHELL = @SHELL@ + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +bindir = @bindir@ +sbindir = @sbindir@ +libexecdir = @libexecdir@ +datadir = @datadir@ +sysconfdir = @sysconfdir@ +sharedstatedir = @sharedstatedir@ +localstatedir = @localstatedir@ +libdir = @libdir@ +infodir = @infodir@ +mandir = @mandir@ +includedir = @includedir@ +oldincludedir = /usr/include + +DESTDIR = + +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ + +top_builddir = . + +ACLOCAL = @ACLOCAL@ +AUTOCONF = @AUTOCONF@ +AUTOMAKE = @AUTOMAKE@ +AUTOHEADER = @AUTOHEADER@ + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS) +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +transform = @program_transform_name@ + +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +host_alias = @host_alias@ +host_triplet = @host@ +CC = @CC@ +CXX = @CXX@ +ECOS_REPOSITORY = @ECOS_REPOSITORY@ +EXEEXT = @EXEEXT@ +MAINT = @MAINT@ +MAKEINFO = @MAKEINFO@ +MSVC_SRCDIR = @MSVC_SRCDIR@ +OBJEXT = @OBJEXT@ +PACKAGE = @PACKAGE@ +PACKAGE_DIR = @PACKAGE_DIR@ +PACKAGE_INSTALL = @PACKAGE_INSTALL@ +PACKAGE_VERSION = @PACKAGE_VERSION@ +VERSION = @VERSION@ +ecos_CFLAGS = @ecos_CFLAGS@ +ecos_CXXFLAGS = @ecos_CXXFLAGS@ +ecos_INCLUDES = @ecos_INCLUDES@ +ecos_LDADD = @ecos_LDADD@ +ecos_LIBS = @ecos_LIBS@ +ecos_infra_incdir = @ecos_infra_incdir@ +ecos_infra_libdir = @ecos_infra_libdir@ +ecos_libcdl_incdir = @ecos_libcdl_incdir@ +ecos_libcdl_libdir = @ecos_libcdl_libdir@ +ecos_tk_libs = @ecos_tk_libs@ + +AUTOMAKE_OPTIONS = 1.3 foreign + +@SUPPORTED_TRUE@AM_CFLAGS = @SUPPORTED_TRUE@@ecos_CFLAGS@ -DECOSYNTH_VERSION=\"@VERSION@\" \ +@SUPPORTED_TRUE@ -DECOS_REPOSITORY=\"@ECOS_REPOSITORY@\" \ +@SUPPORTED_TRUE@ -DLIBEXECDIR=\"$(libexecdir)\" \ +@SUPPORTED_TRUE@ -DPACKAGE_DIR=\"@PACKAGE_DIR@\" \ +@SUPPORTED_TRUE@ -DPACKAGE_VERSION=\"@PACKAGE_VERSION@\" \ +@SUPPORTED_TRUE@ -DPACKAGE_INSTALL=\"@PACKAGE_INSTALL@\" +@SUPPORTED_TRUE@AM_CXXFLAGS = @SUPPORTED_TRUE@@ecos_CXXFLAGS@ +@SUPPORTED_TRUE@INCLUDES = @SUPPORTED_TRUE@@ecos_INCLUDES@ +@SUPPORTED_TRUE@LIBS = @SUPPORTED_TRUE@@ecos_LIBS@ @ecos_LDADD@ + +@SUPPORTED_TRUE@synthdir = @SUPPORTED_TRUE@$(libexecdir)/ecos/@PACKAGE_INSTALL@ +@SUPPORTED_TRUE@synth_PROGRAMS = @SUPPORTED_TRUE@ecosynth +@SUPPORTED_TRUE@synth_DATA = @SUPPORTED_TRUE@ecosynth.tcl default.tdf user_initrc.tcl user_mainrc.tcl \ +@SUPPORTED_TRUE@ console.tcl \ +@SUPPORTED_TRUE@ ecosicon.xbm ecosiconmask.xbm tick_yes.xbm tick_no.xbm \ +@SUPPORTED_TRUE@ save.xbm cut.xbm copy.xbm paste.xbm help.xbm running1.ppm \ +@SUPPORTED_TRUE@ saveall.xbm + +@SUPPORTED_TRUE@ecosynth_SOURCES = @SUPPORTED_TRUE@ecosynth.c +@SUPPORTED_TRUE@ecosynth_LDADD = @SUPPORTED_TRUE@@ecos_tk_libs@ +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +mkinstalldirs = $(SHELL) $(top_srcdir)/../../../../../../acsupport/mkinstalldirs +CONFIG_CLEAN_FILES = +@SUPPORTED_TRUE@synth_PROGRAMS = ecosynth$(EXEEXT) +PROGRAMS = $(synth_PROGRAMS) + + +DEFS = @DEFS@ -I. -I$(srcdir) +CPPFLAGS = @CPPFLAGS@ +LDFLAGS = @LDFLAGS@ +@SUPPORTED_TRUE@ecosynth_OBJECTS = ecosynth.$(OBJEXT) +@SUPPORTED_TRUE@ecosynth_DEPENDENCIES = +ecosynth_LDFLAGS = +CFLAGS = @CFLAGS@ +COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ +DATA = $(synth_DATA) + +DIST_COMMON = Makefile.am Makefile.in acinclude.m4 aclocal.m4 configure \ +configure.in + + +DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST) + +TAR = gtar +GZIP_ENV = --best +DEP_FILES = .deps/ecosynth.P +SOURCES = $(ecosynth_SOURCES) +OBJECTS = $(ecosynth_OBJECTS) + +all: all-redirect +.SUFFIXES: +.SUFFIXES: .S .c .o .obj .s +$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) + cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile + +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(BUILT_SOURCES) + cd $(top_builddir) \ + && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status + +$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ configure.in acinclude.m4 + cd $(srcdir) && $(ACLOCAL) + +config.status: $(srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) + $(SHELL) ./config.status --recheck +$(srcdir)/configure: @MAINTAINER_MODE_TRUE@$(srcdir)/configure.in $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES) + cd $(srcdir) && $(AUTOCONF) + +mostlyclean-synthPROGRAMS: + +clean-synthPROGRAMS: + -test -z "$(synth_PROGRAMS)" || rm -f $(synth_PROGRAMS) + +distclean-synthPROGRAMS: + +maintainer-clean-synthPROGRAMS: + +install-synthPROGRAMS: $(synth_PROGRAMS) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(synthdir) + @list='$(synth_PROGRAMS)'; for p in $$list; do \ + if test -f $$p; then \ + echo " $(INSTALL_PROGRAM) $$p $(DESTDIR)$(synthdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`"; \ + $(INSTALL_PROGRAM) $$p $(DESTDIR)$(synthdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \ + else :; fi; \ + done + +uninstall-synthPROGRAMS: + @$(NORMAL_UNINSTALL) + list='$(synth_PROGRAMS)'; for p in $$list; do \ + rm -f $(DESTDIR)$(synthdir)/`echo $$p|sed 's/$(EXEEXT)$$//'|sed '$(transform)'|sed 's/$$/$(EXEEXT)/'`; \ + done + +# FIXME: We should only use cygpath when building on Windows, +# and only if it is available. +.c.obj: + $(COMPILE) -c `cygpath -w $<` + +.s.o: + $(COMPILE) -c $< + +.S.o: + $(COMPILE) -c $< + +mostlyclean-compile: + -rm -f *.o core *.core + -rm -f *.$(OBJEXT) + +clean-compile: + +distclean-compile: + -rm -f *.tab.c + +maintainer-clean-compile: + +ecosynth$(EXEEXT): $(ecosynth_OBJECTS) $(ecosynth_DEPENDENCIES) + @rm -f ecosynth$(EXEEXT) + $(LINK) $(ecosynth_LDFLAGS) $(ecosynth_OBJECTS) $(ecosynth_LDADD) $(LIBS) + +install-synthDATA: $(synth_DATA) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(synthdir) + @list='$(synth_DATA)'; for p in $$list; do \ + if test -f $(srcdir)/$$p; then \ + echo " $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(synthdir)/$$p"; \ + $(INSTALL_DATA) $(srcdir)/$$p $(DESTDIR)$(synthdir)/$$p; \ + else if test -f $$p; then \ + echo " $(INSTALL_DATA) $$p $(DESTDIR)$(synthdir)/$$p"; \ + $(INSTALL_DATA) $$p $(DESTDIR)$(synthdir)/$$p; \ + fi; fi; \ + done + +uninstall-synthDATA: + @$(NORMAL_UNINSTALL) + list='$(synth_DATA)'; for p in $$list; do \ + rm -f $(DESTDIR)$(synthdir)/$$p; \ + done + +tags: TAGS + +ID: $(HEADERS) $(SOURCES) $(LISP) + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + here=`pwd` && cd $(srcdir) \ + && mkid -f$$here/ID $$unique $(LISP) + +TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) $(LISP) + tags=; \ + here=`pwd`; \ + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \ + || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags $$unique $(LISP) -o $$here/TAGS) + +mostlyclean-tags: + +clean-tags: + +distclean-tags: + -rm -f TAGS ID + +maintainer-clean-tags: + +distdir = $(PACKAGE)-$(VERSION) +top_distdir = $(distdir) + +# This target untars the dist file and tries a VPATH configuration. Then +# it guarantees that the distribution is self-contained by making another +# tarfile. +distcheck: dist + -rm -rf $(distdir) + GZIP=$(GZIP_ENV) $(TAR) zxf $(distdir).tar.gz + mkdir $(distdir)/=build + mkdir $(distdir)/=inst + dc_install_base=`cd $(distdir)/=inst && pwd`; \ + cd $(distdir)/=build \ + && ../configure --srcdir=.. --prefix=$$dc_install_base \ + && $(MAKE) $(AM_MAKEFLAGS) \ + && $(MAKE) $(AM_MAKEFLAGS) dvi \ + && $(MAKE) $(AM_MAKEFLAGS) check \ + && $(MAKE) $(AM_MAKEFLAGS) install \ + && $(MAKE) $(AM_MAKEFLAGS) installcheck \ + && $(MAKE) $(AM_MAKEFLAGS) dist + -rm -rf $(distdir) + @banner="$(distdir).tar.gz is ready for distribution"; \ + dashes=`echo "$$banner" | sed s/./=/g`; \ + echo "$$dashes"; \ + echo "$$banner"; \ + echo "$$dashes" +dist: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +dist-all: distdir + -chmod -R a+r $(distdir) + GZIP=$(GZIP_ENV) $(TAR) chozf $(distdir).tar.gz $(distdir) + -rm -rf $(distdir) +distdir: $(DISTFILES) + -rm -rf $(distdir) + mkdir $(distdir) + -chmod 777 $(distdir) + here=`cd $(top_builddir) && pwd`; \ + top_distdir=`cd $(distdir) && pwd`; \ + distdir=`cd $(distdir) && pwd`; \ + cd $(top_srcdir) \ + && $(AUTOMAKE) --include-deps --build-dir=$$here --srcdir-name=$(top_srcdir) --output-dir=$$top_distdir --foreign Makefile + @for file in $(DISTFILES); do \ + d=$(srcdir); \ + if test -d $$d/$$file; then \ + cp -pr $$d/$$file $(distdir)/$$file; \ + else \ + test -f $(distdir)/$$file \ + || ln $$d/$$file $(distdir)/$$file 2> /dev/null \ + || cp -p $$d/$$file $(distdir)/$$file || :; \ + fi; \ + done + +DEPS_MAGIC := $(shell mkdir .deps > /dev/null 2>&1 || :) + +-include $(DEP_FILES) + +mostlyclean-depend: + +clean-depend: + +distclean-depend: + -rm -rf .deps + +maintainer-clean-depend: + +%.o: %.c + @echo '$(COMPILE) -c $<'; \ + $(COMPILE) -Wp,-MD,.deps/$(*F).pp -c $< + @-cp .deps/$(*F).pp .deps/$(*F).P; \ + tr ' ' '\012' < .deps/$(*F).pp \ + | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \ + >> .deps/$(*F).P; \ + rm .deps/$(*F).pp + +%.lo: %.c + @echo '$(LTCOMPILE) -c $<'; \ + $(LTCOMPILE) -Wp,-MD,.deps/$(*F).pp -c $< + @-sed -e 's/^\([^:]*\)\.o[ ]*:/\1.lo \1.o :/' \ + < .deps/$(*F).pp > .deps/$(*F).P; \ + tr ' ' '\012' < .deps/$(*F).pp \ + | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \ + >> .deps/$(*F).P; \ + rm -f .deps/$(*F).pp +info-am: +info: info-am +dvi-am: +dvi: dvi-am +check-am: all-am +check: check-am +installcheck-am: +installcheck: installcheck-am +install-exec-am: +install-exec: install-exec-am + +install-data-am: install-synthPROGRAMS install-synthDATA +install-data: install-data-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am +install: install-am +uninstall-am: uninstall-synthPROGRAMS uninstall-synthDATA +uninstall: uninstall-am +all-am: Makefile $(PROGRAMS) $(DATA) +all-redirect: all-am +install-strip: + $(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install +installdirs: + $(mkinstalldirs) $(DESTDIR)$(synthdir) $(DESTDIR)$(synthdir) + + +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -rm -f Makefile $(CONFIG_CLEAN_FILES) + -rm -f config.cache config.log stamp-h stamp-h[0-9]* + +maintainer-clean-generic: +mostlyclean-am: mostlyclean-synthPROGRAMS mostlyclean-compile \ + mostlyclean-tags mostlyclean-depend mostlyclean-generic + +mostlyclean: mostlyclean-am + +clean-am: clean-synthPROGRAMS clean-compile clean-tags clean-depend \ + clean-generic mostlyclean-am + +clean: clean-am + +distclean-am: distclean-synthPROGRAMS distclean-compile distclean-tags \ + distclean-depend distclean-generic clean-am + +distclean: distclean-am + -rm -f config.status + +maintainer-clean-am: maintainer-clean-synthPROGRAMS \ + maintainer-clean-compile maintainer-clean-tags \ + maintainer-clean-depend maintainer-clean-generic \ + distclean-am + @echo "This command is intended for maintainers to use;" + @echo "it deletes files that may require special tools to rebuild." + +maintainer-clean: maintainer-clean-am + -rm -f config.status + +.PHONY: mostlyclean-synthPROGRAMS distclean-synthPROGRAMS \ +clean-synthPROGRAMS maintainer-clean-synthPROGRAMS \ +uninstall-synthPROGRAMS install-synthPROGRAMS mostlyclean-compile \ +distclean-compile clean-compile maintainer-clean-compile \ +uninstall-synthDATA install-synthDATA tags mostlyclean-tags \ +distclean-tags clean-tags maintainer-clean-tags distdir \ +mostlyclean-depend distclean-depend clean-depend \ +maintainer-clean-depend info-am info dvi-am dvi check check-am \ +installcheck-am installcheck install-exec-am install-exec \ +install-data-am install-data install-am install uninstall-am uninstall \ +all-redirect all-am all installdirs mostlyclean-generic \ +distclean-generic clean-generic maintainer-clean-generic clean \ +mostlyclean distclean maintainer-clean + + +@SUPPORTED_TRUE@ecosynth.$(OBJEXT) : Makefile ../src/synth_protocol.h + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT:
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/acinclude.m4 @@ -0,0 +1,46 @@ +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/06 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../acsupport/acinclude.m4)
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/aclocal.m4 @@ -0,0 +1,184 @@ +dnl aclocal.m4 generated automatically by aclocal 1.4-p5 + +dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without +dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A +dnl PARTICULAR PURPOSE. + +dnl Process this file with aclocal to get an aclocal.m4 file. Then +dnl process that with autoconf. +dnl ==================================================================== +dnl +dnl acinclude.m4 +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos host tools. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/06 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + +dnl Access shared macros. +dnl AM_CONDITIONAL needs to be mentioned here or else aclocal does not +dnl incorporate the macro into aclocal.m4 +sinclude(../../../../../../acsupport/acinclude.m4) + +# Define a conditional. + +AC_DEFUN([AM_CONDITIONAL], +[AC_SUBST($1_TRUE) +AC_SUBST($1_FALSE) +if $2; then + $1_TRUE= + $1_FALSE='#' +else + $1_TRUE='#' + $1_FALSE= +fi]) + +# Do all the work for Automake. This macro actually does too much -- +# some checks are only needed if your package does certain things. +# But this isn't really a big deal. + +# serial 1 + +dnl Usage: +dnl AM_INIT_AUTOMAKE(package,version, [no-define]) + +AC_DEFUN([AM_INIT_AUTOMAKE], +[AC_REQUIRE([AC_PROG_INSTALL]) +PACKAGE=[$1] +AC_SUBST(PACKAGE) +VERSION=[$2] +AC_SUBST(VERSION) +dnl test to see if srcdir already configured +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + AC_MSG_ERROR([source directory already configured; run "make distclean" there first]) +fi +ifelse([$3],, +AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package]) +AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])) +AC_REQUIRE([AM_SANITY_CHECK]) +AC_REQUIRE([AC_ARG_PROGRAM]) +dnl FIXME This is truly gross. +missing_dir=`cd $ac_aux_dir && pwd` +AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir) +AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir) +AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir) +AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir) +AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir) +AC_REQUIRE([AC_PROG_MAKE_SET])]) + +# +# Check to make sure that the build environment is sane. +# + +AC_DEFUN([AM_SANITY_CHECK], +[AC_MSG_CHECKING([whether build environment is sane]) +# Just in case +sleep 1 +echo timestamp > conftestfile +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "[$]*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "[$]*" != "X $srcdir/configure conftestfile" \ + && test "[$]*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken +alias in your environment]) + fi + + test "[$]2" = conftestfile + ) +then + # Ok. + : +else + AC_MSG_ERROR([newly created file is older than distributed files! +Check your system clock]) +fi +rm -f conftest* +AC_MSG_RESULT(yes)]) + +dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY) +dnl The program must properly implement --version. +AC_DEFUN([AM_MISSING_PROG], +[AC_MSG_CHECKING(for working $2) +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if ($2 --version) < /dev/null > /dev/null 2>&1; then + $1=$2 + AC_MSG_RESULT(found) +else + $1="$3/missing $2" + AC_MSG_RESULT(missing) +fi +AC_SUBST($1)]) + +# Add --enable-maintainer-mode option to configure. +# From Jim Meyering + +# serial 1 + +AC_DEFUN([AM_MAINTAINER_MODE], +[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) + dnl maintainer-mode is disabled by default + AC_ARG_ENABLE(maintainer-mode, +[ --enable-maintainer-mode enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer], + USE_MAINTAINER_MODE=$enableval, + USE_MAINTAINER_MODE=no) + AC_MSG_RESULT($USE_MAINTAINER_MODE) + AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes) + MAINT=$MAINTAINER_MODE_TRUE + AC_SUBST(MAINT)dnl +] +) +
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/configure @@ -0,0 +1,2013 @@ +#! /bin/sh + +# Guess values for system-dependent variables and create Makefiles. +# Generated automatically using autoconf version 2.13 +# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. + +# Defaults: +ac_help= +ac_default_prefix=/usr/local +# Any additions from configure.in: +ac_help="$ac_help + --enable-maintainer-mode enable make rules and dependencies not useful + (and sometimes confusing) to the casual installer" +ac_help="$ac_help + --enable-debug do a debug rather than a release build" +ac_help="$ac_help + --enable-ansi do an ANSI rather than a unicode build" +ac_help="$ac_help + --with-tcl-version=<vsn> version of Tcl to be used" +ac_help="$ac_help + --with-tcl-header=<path> location of Tcl header" +ac_help="$ac_help + --with-tcl-lib=<path> location of Tcl libraries" +ac_help="$ac_help + --with-tcl=<path> location of Tcl header and libraries" + +# Initialize some variables set by options. +# The variables have the same names as the options, with +# dashes changed to underlines. +build=NONE +cache_file=./config.cache +exec_prefix=NONE +host=NONE +no_create= +nonopt=NONE +no_recursion= +prefix=NONE +program_prefix=NONE +program_suffix=NONE +program_transform_name=s,x,x, +silent= +site= +srcdir= +target=NONE +verbose= +x_includes=NONE +x_libraries=NONE +bindir='${exec_prefix}/bin' +sbindir='${exec_prefix}/sbin' +libexecdir='${exec_prefix}/libexec' +datadir='${prefix}/share' +sysconfdir='${prefix}/etc' +sharedstatedir='${prefix}/com' +localstatedir='${prefix}/var' +libdir='${exec_prefix}/lib' +includedir='${prefix}/include' +oldincludedir='/usr/include' +infodir='${prefix}/info' +mandir='${prefix}/man' + +# Initialize some other variables. +subdirs= +MFLAGS= MAKEFLAGS= +SHELL=${CONFIG_SHELL-/bin/sh} +# Maximum number of lines to put in a shell here document. +ac_max_here_lines=12 + +ac_prev= +for ac_option +do + + # If the previous option needs an argument, assign it. + if test -n "$ac_prev"; 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then + { echo "configure: error: $ac_package: invalid package name" 1>&2; exit 1; } + fi + ac_package=`echo $ac_package| sed 's/-/_/g'` + eval "with_${ac_package}=no" ;; + + --x) + # Obsolete; use --with-x. + with_x=yes ;; + + -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \ + | --x-incl | --x-inc | --x-in | --x-i) + ac_prev=x_includes ;; + -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \ + | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*) + x_includes="$ac_optarg" ;; + + -x-libraries | --x-libraries | --x-librarie | --x-librari \ + | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l) + ac_prev=x_libraries ;; + -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \ + | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*) + x_libraries="$ac_optarg" ;; + + -*) { echo "configure: error: $ac_option: invalid option; use --help to show usage" 1>&2; exit 1; } + ;; + + *) + if test -n "`echo $ac_option| sed 's/[-a-z0-9.]//g'`"; then + echo "configure: warning: $ac_option: invalid host type" 1>&2 + fi + if test "x$nonopt" != xNONE; then + { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; } + fi + nonopt="$ac_option" + ;; + + esac +done + +if test -n "$ac_prev"; then + { echo "configure: error: missing argument to --`echo $ac_prev | sed 's/_/-/g'`" 1>&2; exit 1; } +fi + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +# File descriptor usage: +# 0 standard input +# 1 file creation +# 2 errors and warnings +# 3 some systems may open it to /dev/tty +# 4 used on the Kubota Titan +# 6 checking for... messages and results +# 5 compiler messages saved in config.log +if test "$silent" = yes; then + exec 6>/dev/null +else + exec 6>&1 +fi +exec 5>./config.log + +echo "\ +This file contains any messages produced by compilers while +running configure, to aid debugging if configure makes a mistake. +" 1>&5 + +# Strip out --no-create and --no-recursion so they do not pile up. +# Also quote any args containing shell metacharacters. +ac_configure_args= +for ac_arg +do + case "$ac_arg" in + -no-create | --no-create | --no-creat | --no-crea | --no-cre \ + | --no-cr | --no-c) ;; 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Instead please use a separate build tree" 1>&2; exit 1; } + else + echo "$ac_t""yes" 1>&6 + fi + + +# Make sure we can run config.sub. +if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then : +else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } +fi + +echo $ac_n "checking host system type""... $ac_c" 1>&6 +echo "configure:582: checking host system type" >&5 + +host_alias=$host +case "$host_alias" in +NONE) + case $nonopt in + NONE) + if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then : + else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; } + fi ;; + *) host_alias=$nonopt ;; + esac ;; +esac + +host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias` +host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` +host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` +host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +echo "$ac_t""$host" 1>&6 + +# Find a good install program. 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It has an incompatible calling convention. + : + else + ac_cv_path_install="$ac_dir/$ac_prog -c" + break 2 + fi + fi + done + ;; + esac + done + IFS="$ac_save_IFS" + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL="$ac_cv_path_install" + else + # As a last resort, use the slow shell script. We don't cache a + # path for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the path is relative. + INSTALL="$ac_install_sh" + fi +fi +echo "$ac_t""$INSTALL" 1>&6 + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + +echo $ac_n "checking whether build environment is sane""... $ac_c" 1>&6 +echo "configure:667: checking whether build environment is sane" >&5 +# Just in case +sleep 1 +echo timestamp > conftestfile +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null` + if test "$*" = "X"; then + # -L didn't work. + set X `ls -t $srcdir/configure conftestfile` + fi + if test "$*" != "X $srcdir/configure conftestfile" \ + && test "$*" != "X conftestfile $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + { echo "configure: error: ls -t appears to fail. Make sure there is not a broken +alias in your environment" 1>&2; exit 1; } + fi + + test "$2" = conftestfile + ) +then + # Ok. + : +else + { echo "configure: error: newly created file is older than distributed files! +Check your system clock" 1>&2; exit 1; } +fi +rm -f conftest* +echo "$ac_t""yes" 1>&6 +if test "$program_transform_name" = s,x,x,; then + program_transform_name= +else + # Double any \ or $. echo might interpret backslashes. + cat <<\EOF_SED > conftestsed +s,\\,\\\\,g; s,\$,$$,g +EOF_SED + program_transform_name="`echo $program_transform_name|sed -f conftestsed`" + rm -f conftestsed +fi +test "$program_prefix" != NONE && + program_transform_name="s,^,${program_prefix},; $program_transform_name" +# Use a double $ so make ignores it. +test "$program_suffix" != NONE && + program_transform_name="s,\$\$,${program_suffix},; $program_transform_name" + +# sed with no file args requires a program. +test "$program_transform_name" = "" && program_transform_name="s,x,x," + +echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6 +echo "configure:724: checking whether ${MAKE-make} sets \${MAKE}" >&5 +set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'` +if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftestmake <<\EOF +all: + @echo 'ac_maketemp="${MAKE}"' +EOF +# GNU make sometimes prints "make[1]: Entering...", which would confuse us. +eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=` +if test -n "$ac_maketemp"; then + eval ac_cv_prog_make_${ac_make}_set=yes +else + eval ac_cv_prog_make_${ac_make}_set=no +fi +rm -f conftestmake +fi +if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then + echo "$ac_t""yes" 1>&6 + SET_MAKE= +else + echo "$ac_t""no" 1>&6 + SET_MAKE="MAKE=${MAKE-make}" +fi + + +PACKAGE=eCos_synthetic_target_arch + +VERSION=0.1 + +if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then + { echo "configure: error: source directory already configured; run "make distclean" there first" 1>&2; exit 1; } +fi + + + +missing_dir=`cd $ac_aux_dir && pwd` +echo $ac_n "checking for working aclocal""... $ac_c" 1>&6 +echo "configure:763: checking for working aclocal" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (aclocal --version) < /dev/null > /dev/null 2>&1; then + ACLOCAL=aclocal + echo "$ac_t""found" 1>&6 +else + ACLOCAL="$missing_dir/missing aclocal" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working autoconf""... $ac_c" 1>&6 +echo "configure:776: checking for working autoconf" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (autoconf --version) < /dev/null > /dev/null 2>&1; then + AUTOCONF=autoconf + echo "$ac_t""found" 1>&6 +else + AUTOCONF="$missing_dir/missing autoconf" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working automake""... $ac_c" 1>&6 +echo "configure:789: checking for working automake" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (automake --version) < /dev/null > /dev/null 2>&1; then + AUTOMAKE=automake + echo "$ac_t""found" 1>&6 +else + AUTOMAKE="$missing_dir/missing automake" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working autoheader""... $ac_c" 1>&6 +echo "configure:802: checking for working autoheader" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (autoheader --version) < /dev/null > /dev/null 2>&1; then + AUTOHEADER=autoheader + echo "$ac_t""found" 1>&6 +else + AUTOHEADER="$missing_dir/missing autoheader" + echo "$ac_t""missing" 1>&6 +fi + +echo $ac_n "checking for working makeinfo""... $ac_c" 1>&6 +echo "configure:815: checking for working makeinfo" >&5 +# Run test in a subshell; some versions of sh will print an error if +# an executable is not found, even if stderr is redirected. +# Redirect stdin to placate older versions of autoconf. Sigh. +if (makeinfo --version) < /dev/null > /dev/null 2>&1; then + MAKEINFO=makeinfo + echo "$ac_t""found" 1>&6 +else + MAKEINFO="$missing_dir/missing makeinfo" + echo "$ac_t""missing" 1>&6 +fi + + +echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6 +echo "configure:829: checking whether to enable maintainer-specific portions of Makefiles" >&5 + # Check whether --enable-maintainer-mode or --disable-maintainer-mode was given. +if test "${enable_maintainer_mode+set}" = set; then + enableval="$enable_maintainer_mode" + USE_MAINTAINER_MODE=$enableval +else + USE_MAINTAINER_MODE=no +fi + + echo "$ac_t""$USE_MAINTAINER_MODE" 1>&6 + + +if test $USE_MAINTAINER_MODE = yes; then + MAINTAINER_MODE_TRUE= + MAINTAINER_MODE_FALSE='#' +else + MAINTAINER_MODE_TRUE='#' + MAINTAINER_MODE_FALSE= +fi + MAINT=$MAINTAINER_MODE_TRUE + + + +case "${host}" in + i[34567]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac + + +if test "${SUPPORTED}" = "yes"; then + SUPPORTED_TRUE= + SUPPORTED_FALSE='#' +else + SUPPORTED_TRUE='#' + SUPPORTED_FALSE= +fi + +if test "${SUPPORTED}" = "yes" ; then + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:870: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CC="gcc" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:900: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_prog_rejected=no + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + break + fi + done + IFS="$ac_save_ifs" +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# -gt 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + set dummy "$ac_dir/$ac_word" "$@" + shift + ac_cv_prog_CC="$@" + fi +fi +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + + if test -z "$CC"; then + case "`uname -s`" in + *win32* | *WIN32*) + # Extract the first word of "cl", so it can be a program name with args. +set dummy cl; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:951: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CC="cl" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CC="$ac_cv_prog_CC" +if test -n "$CC"; then + echo "$ac_t""$CC" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + ;; + esac + fi + test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; } +fi + +echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6 +echo "configure:983: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5 + +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +cat > conftest.$ac_ext << EOF + +#line 994 "configure" +#include "confdefs.h" + +main(){return(0);} +EOF +if { (eval echo configure:999: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then + ac_cv_prog_cc_works=yes + # If we can't run a trivial program, we are probably using a cross compiler. + if (./conftest; exit) 2>/dev/null; then + ac_cv_prog_cc_cross=no + else + ac_cv_prog_cc_cross=yes + fi +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + ac_cv_prog_cc_works=no +fi +rm -fr conftest* +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +echo "$ac_t""$ac_cv_prog_cc_works" 1>&6 +if test $ac_cv_prog_cc_works = no; then + { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; } +fi +echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 +echo "configure:1025: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5 +echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6 +cross_compiling=$ac_cv_prog_cc_cross + +echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6 +echo "configure:1030: checking whether we are using GNU C" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.c <<EOF +#ifdef __GNUC__ + yes; +#endif +EOF +if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1039: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then + ac_cv_prog_gcc=yes +else + ac_cv_prog_gcc=no +fi +fi + +echo "$ac_t""$ac_cv_prog_gcc" 1>&6 + +if test $ac_cv_prog_gcc = yes; then + GCC=yes +else + GCC= +fi + +ac_test_CFLAGS="${CFLAGS+set}" +ac_save_CFLAGS="$CFLAGS" +CFLAGS= +echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6 +echo "configure:1058: checking whether ${CC-cc} accepts -g" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + echo 'void f(){}' > conftest.c +if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then + ac_cv_prog_cc_g=yes +else + ac_cv_prog_cc_g=no +fi +rm -f conftest* + +fi + +echo "$ac_t""$ac_cv_prog_cc_g" 1>&6 +if test "$ac_test_CFLAGS" = set; then + CFLAGS="$ac_save_CFLAGS" +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi + + for ac_prog in $CCC c++ g++ gcc CC cxx cc++ cl +do +# Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 +echo "configure:1094: checking for $ac_word" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test -n "$CXX"; then + ac_cv_prog_CXX="$CXX" # Let the user override the test. +else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" + ac_dummy="$PATH" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + if test -f $ac_dir/$ac_word; then + ac_cv_prog_CXX="$ac_prog" + break + fi + done + IFS="$ac_save_ifs" +fi +fi +CXX="$ac_cv_prog_CXX" +if test -n "$CXX"; then + echo "$ac_t""$CXX" 1>&6 +else + echo "$ac_t""no" 1>&6 +fi + +test -n "$CXX" && break +done +test -n "$CXX" || CXX="gcc" + + +echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6 +echo "configure:1126: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5 + +ac_ext=C +# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cxx_cross + +cat > conftest.$ac_ext << EOF + +#line 1137 "configure" +#include "confdefs.h" + +int main(){return(0);} +EOF +if { (eval echo configure:1142: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then + ac_cv_prog_cxx_works=yes + # If we can't run a trivial program, we are probably using a cross compiler. + if (./conftest; exit) 2>/dev/null; then + ac_cv_prog_cxx_cross=no + else + ac_cv_prog_cxx_cross=yes + fi +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + ac_cv_prog_cxx_works=no +fi +rm -fr conftest* +ac_ext=c +# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. +ac_cpp='$CPP $CPPFLAGS' +ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' +ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' +cross_compiling=$ac_cv_prog_cc_cross + +echo "$ac_t""$ac_cv_prog_cxx_works" 1>&6 +if test $ac_cv_prog_cxx_works = no; then + { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; } +fi +echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 +echo "configure:1168: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5 +echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6 +cross_compiling=$ac_cv_prog_cxx_cross + +echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6 +echo "configure:1173: checking whether we are using GNU C++" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.C <<EOF +#ifdef __GNUC__ + yes; +#endif +EOF +if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1182: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then + ac_cv_prog_gxx=yes +else + ac_cv_prog_gxx=no +fi +fi + +echo "$ac_t""$ac_cv_prog_gxx" 1>&6 + +if test $ac_cv_prog_gxx = yes; then + GXX=yes +else + GXX= +fi + +ac_test_CXXFLAGS="${CXXFLAGS+set}" +ac_save_CXXFLAGS="$CXXFLAGS" +CXXFLAGS= +echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6 +echo "configure:1201: checking whether ${CXX-g++} accepts -g" >&5 +if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + echo 'void f(){}' > conftest.cc +if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then + ac_cv_prog_cxx_g=yes +else + ac_cv_prog_cxx_g=no +fi +rm -f conftest* + +fi + +echo "$ac_t""$ac_cv_prog_cxx_g" 1>&6 +if test "$ac_test_CXXFLAGS" = set; then + CXXFLAGS="$ac_save_CXXFLAGS" +elif test $ac_cv_prog_cxx_g = yes; then + if test "$GXX" = yes; then + CXXFLAGS="-g -O2" + else + CXXFLAGS="-g" + fi +else + if test "$GXX" = yes; then + CXXFLAGS="-O2" + else + CXXFLAGS= + fi +fi + +for ac_declaration in \ + ''\ + '#include <stdlib.h>' \ + 'extern "C" void std::exit (int) throw (); using std::exit;' \ + 'extern "C" void std::exit (int); using std::exit;' \ + 'extern "C" void exit (int) throw ();' \ + 'extern "C" void exit (int);' \ + 'void exit (int);' +do + cat > conftest.$ac_ext <<EOF +#line 1242 "configure" +#include "confdefs.h" +#include <stdlib.h> +$ac_declaration +int main() { +exit (42); +; return 0; } +EOF +if { (eval echo configure:1250: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + : +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + continue +fi +rm -f conftest* + cat > conftest.$ac_ext <<EOF +#line 1260 "configure" +#include "confdefs.h" +$ac_declaration +int main() { +exit (42); +; return 0; } +EOF +if { (eval echo configure:1267: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + break +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 +fi +rm -f conftest* +done +if test -n "$ac_declaration"; then + echo '#ifdef __cplusplus' >>confdefs.h + echo $ac_declaration >>confdefs.h + echo '#endif' >>confdefs.h +fi + + + echo $ac_n "checking for object suffix""... $ac_c" 1>&6 +echo "configure:1284: checking for object suffix" >&5 +if eval "test \"`echo '$''{'ac_cv_objext'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + rm -f conftest* +echo 'int i = 1;' > conftest.$ac_ext +if { (eval echo configure:1290: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + for ac_file in conftest.*; do + case $ac_file in + *.c) ;; + *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;; + esac + done +else + { echo "configure: error: installation or configuration problem; compiler does not work" 1>&2; exit 1; } +fi +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_objext" 1>&6 +OBJEXT=$ac_cv_objext +ac_objext=$ac_cv_objext + + echo $ac_n "checking for Cygwin environment""... $ac_c" 1>&6 +echo "configure:1308: checking for Cygwin environment" >&5 +if eval "test \"`echo '$''{'ac_cv_cygwin'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.$ac_ext <<EOF +#line 1313 "configure" +#include "confdefs.h" + +int main() { + +#ifndef __CYGWIN__ +#define __CYGWIN__ __CYGWIN32__ +#endif +return __CYGWIN__; +; return 0; } +EOF +if { (eval echo configure:1324: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + ac_cv_cygwin=yes +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + ac_cv_cygwin=no +fi +rm -f conftest* +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_cygwin" 1>&6 +CYGWIN= +test "$ac_cv_cygwin" = yes && CYGWIN=yes +echo $ac_n "checking for mingw32 environment""... $ac_c" 1>&6 +echo "configure:1341: checking for mingw32 environment" >&5 +if eval "test \"`echo '$''{'ac_cv_mingw32'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.$ac_ext <<EOF +#line 1346 "configure" +#include "confdefs.h" + +int main() { +return __MINGW32__; +; return 0; } +EOF +if { (eval echo configure:1353: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + rm -rf conftest* + ac_cv_mingw32=yes +else + echo "configure: failed program was:" >&5 + cat conftest.$ac_ext >&5 + rm -rf conftest* + ac_cv_mingw32=no +fi +rm -f conftest* +rm -f conftest* +fi + +echo "$ac_t""$ac_cv_mingw32" 1>&6 +MINGW32= +test "$ac_cv_mingw32" = yes && MINGW32=yes + + +echo $ac_n "checking for executable suffix""... $ac_c" 1>&6 +echo "configure:1372: checking for executable suffix" >&5 +if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + if test "$CYGWIN" = yes || test "$MINGW32" = yes; then + ac_cv_exeext=.exe +else + rm -f conftest* + echo 'int main () { return 0; }' > conftest.$ac_ext + ac_cv_exeext= + if { (eval echo configure:1382: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then + for file in conftest.*; do + case $file in + *.c | *.o | *.obj) ;; + *) ac_cv_exeext=`echo $file | sed -e s/conftest//` ;; + esac + done + else + { echo "configure: error: installation or configuration problem: compiler cannot create executables." 1>&2; exit 1; } + fi + rm -f conftest* + test x"${ac_cv_exeext}" = x && ac_cv_exeext=no +fi +fi + +EXEEXT="" +test x"${ac_cv_exeext}" != xno && EXEEXT=${ac_cv_exeext} +echo "$ac_t""${ac_cv_exeext}" 1>&6 +ac_exeext=$EXEEXT + + + ecos_CFLAGS="" + ecos_CXXFLAGS="" + ecos_LDADD="" + ecos_INCLUDES="" + ecos_LIBS="" + + + + + + + + + + + + echo $ac_n "checking "for Visual C++"""... $ac_c" 1>&6 +echo "configure:1420: checking "for Visual C++"" >&5 + MSVC="no"; + if test "${CC}" = "cl" ; then + MSVC="yes" + CXX="cl" + + + + if test "${MSVC}" = "yes" ; then + MSVC_SRCDIR=`cygpath -w ${MSVC_SRCDIR} | tr \\\\\\\\ /` + fi + + + ecos_INCLUDES="${ecos_INCLUDES} \"-I${msvc_srcdir}\"" + ecos_LDADD="-link" + ecos_LIBS="advapi32.lib" + fi + + +if test "${MSVC}" = "yes"; then + MSVC_TRUE= + MSVC_FALSE='#' +else + MSVC_TRUE='#' + MSVC_FALSE= +fi + if test "${MSVC}" = "yes" ; then + echo "$ac_t""unfortunately yes" 1>&6 + else + echo "$ac_t""no" 1>&6 + fi + + + + + + + + echo $ac_n "checking "the default compiler flags"""... $ac_c" 1>&6 +echo "configure:1459: checking "the default compiler flags"" >&5 + + ecosflags_enable_debug="no" + # Check whether --enable-debug or --disable-debug was given. +if test "${enable_debug+set}" = set; then + enableval="$enable_debug" + case "${enableval}" in + yes) ecosflags_enable_debug="yes" ;; + *) ecosflags_enable_debug="no" ;; + esac +fi + + + ecosflags_enable_ansi="no" + if test "${MSVC}" = "yes" ; then + # Check whether --enable-ansi or --disable-ansi was given. +if test "${enable_ansi+set}" = set; then + enableval="$enable_ansi" + case "${enableval}" in + yes) ecosflags_enable_ansi="yes" ;; + *) ecosflags_enable_ansi="no" ;; + esac +fi + + fi + + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -pipe -Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -pipe -Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Woverloaded-virtual" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -nologo -W3" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -nologo -W3 -GR -GX" + else + { echo "configure: error: "default flags for ${CC} are not known"" 1>&2; exit 1; } + fi + + if test "${ecosflags_enable_debug}" = "yes" ; then + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -g -O0" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -g -O0" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -MDd -Zi" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -MDd -Zi" + fi + else + if test "${GCC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -O0" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -O0" + elif test "${MSVC}" = "yes" ; then + ecos_CFLAGS="${ecos_CFLAGS} -MD -O2" + ecos_CXXFLAGS="${ecos_CXXFLAGS} -MD -O2" + fi + fi + + CFLAGS="${ac_save_CFLAGS}" + CXXFLAGS="${ac_save_CXXFLAGS}" + + echo "$ac_t""done" 1>&6 + + + + + + + + ecos_tcl_version="" + ecos_tcl_incdir="" + ecos_tcl_libdir="" + ecos_tk_libs="" + + + echo $ac_n "checking for Tcl version""... $ac_c" 1>&6 +echo "configure:1531: checking for Tcl version" >&5 + # Check whether --with-tcl-version or --without-tcl-version was given. +if test "${with_tcl_version+set}" = set; then + withval="$with_tcl_version" + + ecos_tcl_version=${with_tcl_version} + +else + + if test "${MSVC}" = "yes" ; then + ecos_tcl_version=80 + elif test "${ac_cv_cygwin}" = "yes" ; then + ecos_tcl_version=80 + else + ecos_tcl_version="" + fi + +fi + + echo "$ac_t""${ecos_tcl_version}" 1>&6 + + echo $ac_n "checking for Tcl installation""... $ac_c" 1>&6 +echo "configure:1553: checking for Tcl installation" >&5 + + # Check whether --with-tcl-header or --without-tcl-header was given. +if test "${with_tcl_header+set}" = set; then + withval="$with_tcl_header" + : +fi + + # Check whether --with-tcl-lib or --without-tcl-lib was given. +if test "${with_tcl_lib+set}" = set; then + withval="$with_tcl_lib" + : +fi + + # Check whether --with-tcl or --without-tcl was given. +if test "${with_tcl+set}" = set; then + withval="$with_tcl" + : +fi + + + + if test "${MSVC}" = "yes" ; then + + if test "${with_tcl_header+set}" = set ; then + ecos_tcl_incdir=${with_tcl_header} + elif test "${with_tcl+set}" = set ; then + ecos_tcl_incdir="${with_tcl}/include" + else + { echo "configure: error: You must specify a Tcl installation with either --with-tcl=<path> or --with-tcl-header=<path>" 1>&2; exit 1; } + fi + + if test \! -r "${ecos_tcl_incdir}/tcl.h" ; then + { echo "configure: error: unable to locate Tcl header file tcl.h" 1>&2; exit 1; } + fi + ecos_msvc_tcl_incdir="${ecos_tcl_incdir}" + + + + if test "${MSVC}" = "yes" ; then + ecos_msvc_tcl_incdir=`cygpath -w ${ecos_msvc_tcl_incdir} | tr \\\\\\\\ /` + fi + + ecos_INCLUDES="${ecos_INCLUDES} \"-I${ecos_msvc_tcl_incdir}\"" + + if test "${with_tcl_lib+set}" = set; then + ecos_tcl_libdir=${with_tcl_lib} + elif test "${with_tcl+set}" = set; then + ecos_tcl_libdir="${with_tcl}/lib" + else + { echo "configure: error: You must specify a Tcl installation with either --with-tcl=<path> or --with-tcl-lib=<path>" 1>&2; exit 1; } + fi + + + + if test "${MSVC}" = "yes" ; then + ecos_tcl_libdir=`cygpath -w ${ecos_tcl_libdir} | tr \\\\\\\\ /` + fi + + ecos_LIBS="${ecos_LIBS} tcl${ecos_tcl_version}.lib" + ecos_LDADD="${ecos_LDADD} \"-libpath=${ecos_tcl_libdir}\"" + + ecos_tk_libs="" + + else + possibles="${with_tcl_header} ${with_tcl}/include ${prefix}/include /usr/include/tcl${ecos_tcl_version} /usr/include" + + ecos_tcl_incdir="" + for i in ${possibles}; do + if test -r "$i/"tcl.h""; then + ecos_tcl_incdir=$i + break + fi + done + + if test \! -r "${ecos_tcl_incdir}/tcl.h" ; then + { echo "configure: error: unable to locate Tcl header file tcl.h" 1>&2; exit 1; } + else + if test "${ecos_tcl_incdir}" != "/usr/include" ; then + ecos_INCLUDES="${ecos_INCLUDES} -I${ecos_tcl_incdir}" + fi + fi + possibles="${with_tcl_lib} ${with_tcl}/lib ${libdir} ${prefix}/lib /usr/lib/tcl$${ecos_tcl_version} /usr/lib" + + ecos_tcl_libdir="" + for i in ${possibles}; do + if test -r "$i/"tclConfig.sh""; then + ecos_tcl_libdir=$i + break + fi + done + + if test \! -r "${ecos_tcl_libdir}/tclConfig.sh" ; then + { echo "configure: error: unable to locate Tcl config file tclConfig.sh" 1>&2; exit 1; } + else + . ${ecos_tcl_libdir}/tclConfig.sh + ecos_LIBS="${ecos_LIBS} -ltcl${ecos_tcl_version} ${TCL_LIBS}" + fi + + possible_tk_libdir=`echo ${ecos_tcl_libdir} | sed -e 's,tcl,tk,'` + possibles="${ecos_tcl_libdir} ${possible_tk_libdir}" + + ecos_tk_libdir="" + for i in ${possibles}; do + if test -r "$i/"tkConfig.sh""; then + ecos_tk_libdir=$i + break + fi + done + + if test \! -r "${ecos_tk_libdir}/tkConfig.sh" ; then + { echo "configure: error: unable to locate Tk config file tkConfig.sh" 1>&2; exit 1; } + else + . ${ecos_tk_libdir}/tkConfig.sh + ecos_tk_libs="-ltk${ecos_tcl_version} ${TK_LIBS}" + for lib in ${TCL_LIBS} ; do + ecos_tk_libs=`echo ${ecos_tk_libs} | sed -e "s!${lib}!!"` + done + fi + fi + + echo "$ac_t""-I${ecos_tcl_incdir} -L${ecos_tcl_libdir}" 1>&6 + + + + if test "${TK_MAJOR_VERSION}" = "8" ; then + if test ${TK_MINOR_VERSION} -lt 3 ; then + { echo "configure: error: The synthetic target support requires at least version 8.3 of Tcl/Tk" 1>&2; exit 1; } + fi + fi + + + package_dir=`cd ${srcdir} && /bin/pwd` + PACKAGE_VERSION=`dirname ${package_dir}` + PACKAGE_VERSION=`basename ${PACKAGE_VERSION}` + + package_dir=`dirname ${package_dir}` + package_dir=`dirname ${package_dir}` + + possibles="${package_dir}/.. ${package_dir}/../.. ${package_dir}/../../.. ${package_dir}/../../../.." + possibles="${possibles} ${package_dir}/../../../../.. ${package_dir}/../../../../../.." + + repository_root="" + for i in ${possibles}; do + if test -d "$i/"acsupport""; then + repository_root=$i + break + fi + done + + if test "${repository_root}" = "" ; then + { echo "configure: error: Failed to identify this package's position within the eCos repository" 1>&2; exit 1; } + fi + ECOS_REPOSITORY=`cd "${repository_root}/packages/pkgconf/.." && /bin/pwd` + + PACKAGE_DIR=`echo ${package_dir} | sed -e "s:${ECOS_REPOSITORY}/::"` + + PACKAGE_INSTALL="${PACKAGE_DIR}/${PACKAGE_VERSION}" + + + + + + +fi + + +trap '' 1 2 15 +cat > confcache <<\EOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs. It is not useful on other systems. +# If it contains results you don't want to keep, you may remove or edit it. +# +# By default, configure uses ./config.cache as the cache file, +# creating it if it does not exist already. You can give configure +# the --cache-file=FILE option to use a different cache file; that is +# what configure does when it calls configure scripts in +# subdirectories, so they share the cache. +# Giving --cache-file=/dev/null disables caching, for debugging configure. +# config.status only pays attention to the cache file if you give it the +# --recheck option to rerun configure. +# +EOF +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, don't put newlines in cache variables' values. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +(set) 2>&1 | + case `(ac_space=' '; set | grep ac_space) 2>&1` in + *ac_space=\ *) + # `set' does not quote correctly, so add quotes (double-quote substitution + # turns \\\\ into \\, and sed turns \\ into \). + sed -n \ + -e "s/'/'\\\\''/g" \ + -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p" + ;; + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p' + ;; + esac >> confcache +if cmp -s $cache_file confcache; then + : +else + if test -w $cache_file; then + echo "updating cache $cache_file" + cat confcache > $cache_file + else + echo "not updating unwritable cache $cache_file" + fi +fi +rm -f confcache + +trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15 + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Any assignment to VPATH causes Sun make to only execute +# the first set of double-colon rules, so remove it if not needed. +# If there is a colon in the path, we need to keep it. +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d' +fi + +trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15 + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +cat > conftest.defs <<\EOF +s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g +s%[ `~#$^&*(){}\\|;'"<>?]%\\&%g +s%\[%\\&%g +s%\]%\\&%g +s%\$%$$%g +EOF +DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '` +rm -f conftest.defs + + +# Without the "./", some shells look in PATH for config.status. +: ${CONFIG_STATUS=./config.status} + +echo creating $CONFIG_STATUS +rm -f $CONFIG_STATUS +cat > $CONFIG_STATUS <<EOF +#! /bin/sh +# Generated automatically by configure. +# Run this file to recreate the current configuration. +# This directory was configured as follows, +# on host `(hostname || uname -n) 2>/dev/null | sed 1q`: +# +# $0 $ac_configure_args +# +# Compiler output produced by configure, useful for debugging +# configure, is in ./config.log if it exists. + +ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]" +for ac_option +do + case "\$ac_option" in + -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r) + echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion" + exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;; + -version | --version | --versio | --versi | --vers | --ver | --ve | --v) + echo "$CONFIG_STATUS generated by autoconf version 2.13" + exit 0 ;; + -help | --help | --hel | --he | --h) + echo "\$ac_cs_usage"; exit 0 ;; + *) echo "\$ac_cs_usage"; exit 1 ;; + esac +done + +ac_given_srcdir=$srcdir +ac_given_INSTALL="$INSTALL" + +trap 'rm -fr `echo "Makefile:Makefile.in" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15 +EOF +cat >> $CONFIG_STATUS <<EOF + +# Protect against being on the right side of a sed subst in config.status. +sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g; + s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF +$ac_vpsub +$extrasub +s%@SHELL@%$SHELL%g +s%@CFLAGS@%$CFLAGS%g +s%@CPPFLAGS@%$CPPFLAGS%g +s%@CXXFLAGS@%$CXXFLAGS%g +s%@FFLAGS@%$FFLAGS%g +s%@DEFS@%$DEFS%g +s%@LDFLAGS@%$LDFLAGS%g +s%@LIBS@%$LIBS%g +s%@exec_prefix@%$exec_prefix%g +s%@prefix@%$prefix%g +s%@program_transform_name@%$program_transform_name%g +s%@bindir@%$bindir%g +s%@sbindir@%$sbindir%g +s%@libexecdir@%$libexecdir%g +s%@datadir@%$datadir%g +s%@sysconfdir@%$sysconfdir%g +s%@sharedstatedir@%$sharedstatedir%g +s%@localstatedir@%$localstatedir%g +s%@libdir@%$libdir%g +s%@includedir@%$includedir%g +s%@oldincludedir@%$oldincludedir%g +s%@infodir@%$infodir%g +s%@mandir@%$mandir%g +s%@host@%$host%g +s%@host_alias@%$host_alias%g +s%@host_cpu@%$host_cpu%g +s%@host_vendor@%$host_vendor%g +s%@host_os@%$host_os%g +s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g +s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g +s%@INSTALL_DATA@%$INSTALL_DATA%g +s%@PACKAGE@%$PACKAGE%g +s%@VERSION@%$VERSION%g +s%@ACLOCAL@%$ACLOCAL%g +s%@AUTOCONF@%$AUTOCONF%g +s%@AUTOMAKE@%$AUTOMAKE%g +s%@AUTOHEADER@%$AUTOHEADER%g +s%@MAKEINFO@%$MAKEINFO%g +s%@SET_MAKE@%$SET_MAKE%g +s%@MAINTAINER_MODE_TRUE@%$MAINTAINER_MODE_TRUE%g +s%@MAINTAINER_MODE_FALSE@%$MAINTAINER_MODE_FALSE%g +s%@MAINT@%$MAINT%g +s%@SUPPORTED_TRUE@%$SUPPORTED_TRUE%g +s%@SUPPORTED_FALSE@%$SUPPORTED_FALSE%g +s%@CC@%$CC%g +s%@CXX@%$CXX%g +s%@OBJEXT@%$OBJEXT%g +s%@EXEEXT@%$EXEEXT%g +s%@ecos_CFLAGS@%$ecos_CFLAGS%g +s%@ecos_CXXFLAGS@%$ecos_CXXFLAGS%g +s%@ecos_LDADD@%$ecos_LDADD%g +s%@ecos_INCLUDES@%$ecos_INCLUDES%g +s%@ecos_LIBS@%$ecos_LIBS%g +s%@MSVC_SRCDIR@%$MSVC_SRCDIR%g +s%@MSVC_TRUE@%$MSVC_TRUE%g +s%@MSVC_FALSE@%$MSVC_FALSE%g +s%@ecos_tk_libs@%$ecos_tk_libs%g +s%@ECOS_REPOSITORY@%$ECOS_REPOSITORY%g +s%@PACKAGE_DIR@%$PACKAGE_DIR%g +s%@PACKAGE_VERSION@%$PACKAGE_VERSION%g +s%@PACKAGE_INSTALL@%$PACKAGE_INSTALL%g + +CEOF +EOF + +cat >> $CONFIG_STATUS <<\EOF + +# Split the substitutions into bite-sized pieces for seds with +# small command number limits, like on Digital OSF/1 and HP-UX. +ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script. +ac_file=1 # Number of current file. +ac_beg=1 # First line for current file. +ac_end=$ac_max_sed_cmds # Line after last line for current file. +ac_more_lines=: +ac_sed_cmds="" +while $ac_more_lines; do + if test $ac_beg -gt 1; then + sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file + else + sed "${ac_end}q" conftest.subs > conftest.s$ac_file + fi + if test ! -s conftest.s$ac_file; then + ac_more_lines=false + rm -f conftest.s$ac_file + else + if test -z "$ac_sed_cmds"; then + ac_sed_cmds="sed -f conftest.s$ac_file" + else + ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file" + fi + ac_file=`expr $ac_file + 1` + ac_beg=$ac_end + ac_end=`expr $ac_end + $ac_max_sed_cmds` + fi +done +if test -z "$ac_sed_cmds"; then + ac_sed_cmds=cat +fi +EOF + +cat >> $CONFIG_STATUS <<EOF + +CONFIG_FILES=\${CONFIG_FILES-"Makefile:Makefile.in"} +EOF +cat >> $CONFIG_STATUS <<\EOF +for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then + # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in". + case "$ac_file" in + *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'` + ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;; + *) ac_file_in="${ac_file}.in" ;; + esac + + # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories. + + # Remove last slash and all that follows it. Not all systems have dirname. + ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'` + if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then + # The file is in a subdirectory. + test ! -d "$ac_dir" && mkdir "$ac_dir" + ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`" + # A "../" for each directory in $ac_dir_suffix. + ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'` + else + ac_dir_suffix= ac_dots= + fi + + case "$ac_given_srcdir" in + .) srcdir=. + if test -z "$ac_dots"; then top_srcdir=. + else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;; + /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;; + *) # Relative path. + srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix" + top_srcdir="$ac_dots$ac_given_srcdir" ;; + esac + + case "$ac_given_INSTALL" in + [/$]*) INSTALL="$ac_given_INSTALL" ;; + *) INSTALL="$ac_dots$ac_given_INSTALL" ;; + esac + + echo creating "$ac_file" + rm -f "$ac_file" + configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure." + case "$ac_file" in + *Makefile*) ac_comsub="1i\\ +# $configure_input" ;; + *) ac_comsub= ;; + esac + + ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"` + sed -e "$ac_comsub +s%@configure_input@%$configure_input%g +s%@srcdir@%$srcdir%g +s%@top_srcdir@%$top_srcdir%g +s%@INSTALL@%$INSTALL%g +" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file +fi; done +rm -f conftest.s* + +EOF +cat >> $CONFIG_STATUS <<EOF + +EOF +cat >> $CONFIG_STATUS <<\EOF + +exit 0 +EOF +chmod +x $CONFIG_STATUS +rm -fr confdefs* $ac_clean_files +test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1 +
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/configure.in @@ -0,0 +1,93 @@ +dnl Process this file with autoconf to produce a configure script. +dnl ==================================================================== +dnl +dnl configure.in +dnl +dnl configure script for eCos synthetic target architectural +dnl host-side support +dnl +dnl ==================================================================== +dnl####COPYRIGHTBEGIN#### +dnl +dnl ---------------------------------------------------------------------------- +dnl Copyright (C) 2002 Bart Veer +dnl +dnl This file is part of the eCos synthetic target support. +dnl +dnl This program is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by the Free +dnl Software Foundation; either version 2 of the License, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but WITHOUT +dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +dnl more details. +dnl +dnl You should have received a copy of the GNU General Public License along with +dnl this program; if not, write to the Free Software Foundation, Inc., +dnl 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl +dnl ---------------------------------------------------------------------------- +dnl +dnl####COPYRIGHTEND#### +dnl ==================================================================== +dnl#####DESCRIPTIONBEGIN#### +dnl +dnl Author(s): bartv +dnl Contact(s): bartv +dnl Date: 2002/08/06 +dnl Version: 0.01 +dnl +dnl####DESCRIPTIONEND#### +dnl ==================================================================== + + +AC_INIT(ecosynth.c) + +dnl Pick up the support files from the top-level acsupport directory. +AC_CONFIG_AUX_DIR(../../../../../../acsupport) + +ECOS_CHECK_BUILD_ne_SRC +AC_CANONICAL_HOST +AM_INIT_AUTOMAKE(eCos_synthetic_target_arch,0.1,0) +AM_MAINTAINER_MODE + +dnl The current version of the synthetic target is implemented only for +dnl x86 Linux platforms, so a test is appropriate here. However +dnl it is not a good idea for the configure script to report an error: +dnl that would prevent any top-level configury working for other +dnl platforms. Instead an automake conditional is used to suppress adding +dnl targets to the build. +case "${host}" in + i[[34567]]86-*-linux-gnu* ) SUPPORTED="yes";; + * ) SUPPORTED="no" +esac +AM_CONDITIONAL(SUPPORTED, test "${SUPPORTED}" = "yes") + +if test "${SUPPORTED}" = "yes" ; then + AC_PROG_CC + AC_PROG_CXX + AC_OBJEXT + AC_EXEEXT + ECOS_PROG_MSVC + ECOS_PROG_STANDARD_COMPILER_FLAGS + + ECOS_PATH_TCL + dnl Check that the version of tk is sufficiently recent. + dnl For example the text widget's tag -elide facility was + dnl added between 8.2 and 8.3. Initial development of + dnl the synthetic target used 8.3.1 + if test "${TK_MAJOR_VERSION}" = "8" ; then + if test ${TK_MINOR_VERSION} -lt 3 ; then + AC_MSG_ERROR([The synthetic target support requires at least version 8.3 of Tcl/Tk]) + fi + fi + ECOS_PACKAGE_DIRS +fi + +dnl There is no real need for a config.h file at this time, since the code +dnl is specific to x86 Linux. This may change in future. +dnl AM_CONFIG_HEADER(config.h:config.h.in) + +AC_OUTPUT(Makefile:Makefile.in)
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/console.tcl @@ -0,0 +1,198 @@ +# {{{ Banner + +# ============================================================================ +# +# console.tcl +# +# Console output support for the eCos synthetic target I/O auxiliary +# +# ============================================================================ +# ####COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos host tools. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ---------------------------------------------------------------------------- +# +# ####COPYRIGHTEND#### +# ============================================================================ +# #####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Contact(s): bartv +# Date: 2002/08/07 +# Version: 0.01 +# Description: +# Implementation of the console device. This script should only ever +# be run from inside the ecosynth auxiliary. +# +# ####DESCRIPTIONEND#### +# ============================================================================ + +# }}} + +# The console device is pretty simple. There can only ever be one +# instance of the console, and it does not take any initialization +# data from the target or from command-line arguments. It does +# look for entries in the target definition file, to set up +# colours for console output, and to install additional regexp-based +# filters. The only type of request that can go to the console device +# is to write some text. + +namespace eval ::console { + + variable _pending_output "" + variable filter_count 0 + array set filters [list] + + proc instantiate { id name data } { + # There is only console so no name is expected, and the target + # cannot provide any initialization data. + if { ("" != $name) || ("" != $data) } { + synth::report_error "The target has passed invalid data when instantiating the console device.\n" + return "" + } + + # There are no command line arguments to be processed and consumed. + + # Look for and consume target definition entries related to the console. + # These are only actually applicable when running in GUI mode, but + # should always be consumed. + set console_appearance "" + + if { [synth::tdf_has_device "console"] } { + if { [synth::tdf_has_option "console" "appearance"] } { + set console_appearance [synth::tdf_get_option "console" "appearance"] + } + + if { [synth::tdf_has_option "console" "filter"] } { + set tdf_filters [synth::tdf_get_options "console" "filter"] + foreach filter $tdf_filters { + if { 2 > [llength $filter] } { + set msg "Invalid entry in target definition file $synth::target_definition\n" + append msg " Device console, option filter takes at least two arguments, a name and a regular expression.\n" + synth::report_error $msg + } else { + # Attempt some minimal validation of the regexp + set name [lindex $filter 0] + set regexp [lindex $filter 1] + set error "" + if { [catch { regexp -- $regexp "Hello world\n" } error] } { + set msg "Invalid entry in target definition file $synth::target_definition\n" + append msg " Device console, filter $name, invalid regular expression\n $error\n" + synth::report_error $msg + } else { + set ::console::filters($::console::filter_count,name) $name + set ::console::filters($::console::filter_count,regexp) $regexp + set ::console::filters($::console::filter_count,appearance) [lrange $filter 2 end] + incr ::console::filter_count + } + } + } + } + } + + # If the GUI is enabled then set up a filter for the console, and + # any additional filters specified in the target definition file + # for e.g. trace output. + if { $synth::flag_gui } { + if { [synth::filter_exists "console" ] } { + synth::report_warning "The console device script [info script] cannot create a filter for \"console\".\nThis filter already exists.\n" + } elseif { "" == $console_appearance } { + synth::filter_add "console" + } else { + array set parsed_options [list] + set message "" + if { ![synth::filter_parse_options $console_appearance parsed_options message] } { + synth::report_error \ + "Invalid entry in target definition file $synth::target_definition\ + \n synth_device \"console\", entry \"appearance\"\n$message" + } else { + synth::filter_add_parsed "console" parsed_options + } + } + + for { set i 0 } { $i < $::console::filter_count } { incr i } { + set name $::console::filters($i,name) + set appearance $::console::filters($i,appearance) + array unset parsed_options + array set parsed_options [list] + + if { [synth::filter_exists $name] } { + synth::report_warning "The console device script [info script] cannot create a filter for \"$name\".\nThis filter already exists.\n" + } else { + set message "" + if { ![synth::filter_parse_options $appearance parsed_options message] } { + synth::report_error \ + "Invalid entry in target definition file $synth::target_definition\ + \n synth_device \"console\", entry filter $name\n$message" + } else { + synth::filter_add_parsed $name parsed_options + } + } + } + } + + # An instantiation function should return a handler for further requests + # to this device instance. + return console::handle_request + } + + proc handle_request { id reqcode arg1 arg2 reqdata reqlen reply_len } { + # Unfortunately the main eCos diagnostic code assumes it is + # talking to a tty in raw mode, since typically the output + # will go via the gdb output window. Hence it will have inserted + # carriage returns which are best filtered out here. + set reqdata [string map {"\r" " "} $reqdata] + + # The output should be processed one line at a time, to make it + # easier to write the regexp filters. + append console::_pending_output $reqdata + while { -1 != [string first "\n" $console::_pending_output] } { + set regexp_matched 0 + set index [string first "\n" $console::_pending_output] + set line [string range $console::_pending_output 0 $index] + set ::console::_pending_output [string range $console::_pending_output [expr $index + 1] end] + + for { set i 0 } { !$regexp_matched && ($i < $console::filter_count) } { incr i } { + if { [regexp -- $console::filters($i,regexp) $line] } { + synth::output $line $console::filters($i,name) + set regexp_matched 1 + } + } + if { ! $regexp_matched } { + synth::output $line "console" + } + } + } + + # Deal with the case where eCos has exited after sending only part + # of a line, which is still pending. In practice this has no + # effect at present because the data is still buffered inside + # eCos. + proc _flush { arg_list } { + if { "" != $console::_pending_output } { + synth::output "$console::_pending_output\n" "console" + } + } + synth::hook_add "ecos_exit" console::_flush + +} + +return console::instantiate
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/copy.xbm @@ -0,0 +1,6 @@ +#define copy_width 16 +#define copy_height 15 +static unsigned char copy_bits[] = { + 0x00, 0x00, 0x7e, 0x00, 0xc2, 0x00, 0x42, 0x01, 0xda, 0x0f, 0x82, 0x30, + 0xfa, 0xd0, 0x82, 0xf6, 0xfa, 0x80, 0x82, 0xbe, 0xfe, 0x80, 0x80, 0xbe, + 0x80, 0x80, 0x80, 0xff, 0x00, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/cut.xbm @@ -0,0 +1,6 @@ +#define cut_width 16 +#define cut_height 15 +static unsigned char cut_bits[] = { + 0x00, 0x00, 0x20, 0x02, 0x20, 0x02, 0x20, 0x02, 0x60, 0x03, 0x40, 0x01, + 0xc0, 0x01, 0x80, 0x00, 0xc0, 0x00, 0x40, 0x07, 0x70, 0x09, 0x48, 0x09, + 0x48, 0x09, 0x48, 0x06, 0x30, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/default.tdf @@ -0,0 +1,43 @@ +# Default synthetic target hardware definition file. This file gets +# installed alongside ecosynth.tcl and other support files in the +# directory $(libexecdir)/ecos/hal_synth_arch_<version>. +# +# The synthetic target support will look for the target definition +# file in various places: first the current directory, then +# ~/.ecos/synth, finally the install location as above. It assumes the +# file is called "default.tdf", unless this is overwritten on the +# command line using the -t or --target option. Typically users will +# make a copy of the default target definition in an appropriate +# location and then modify this copy as required. +# +# This file only contains support for those devices supported by the +# core package: the console, ... Additional devices such as the +# ethernet support which live in separate eCos packages may have their +# own example fragments which can be inserted in the user's own target +# definition file, directly or via e.g. a Tcl "source" command. +# +# This file is executed in a Tcl interpreter with an additional +# command "synth_device", so Tcl syntax applies and the full +# functionality provided by Tcl interpreters is available if desired. + +# ---------------------------------------------------------------------------- +# The console device. This serves as the destination for low-level +# eCos text output, for example from the diag_printf() function, +# and is intended primarily for diagnostics and debugging. +# +# The appearance of normal console output can be controlled by +# the "appearance" option. This takes the standard arguments for +# text filters, for example -foreground and -background. +# +# It is also possible to install new filters for specific types +# of output, for example eCos tracing output. Each such filter +# is defined by a name, a regular expression, and details of +# the desired appearance. Every line of console output generated +# by eCos is matched against the various regular expressions, +# and the first match found controls the appearance of the +# output. + +synth_device console { + # appearance -foreground white -background black + filter trace {^TRACE:.*} -foreground HotPink1 -hide 1 +} \ No newline at end of file
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/ecosicon.xbm @@ -0,0 +1,10 @@ +#define ecosicon_width 40 +#define ecosicon_height 16 +static unsigned char ecosicon_bits[] = { + 0xfc, 0xff, 0xab, 0xaa, 0x2a, 0xfe, 0xff, 0x53, 0x55, 0x55, 0xff, 0xff, + 0xab, 0xaa, 0xaa, 0x87, 0x1f, 0x52, 0x50, 0x40, 0x03, 0x0f, 0x28, 0x20, + 0x80, 0x71, 0xc6, 0x11, 0x41, 0x14, 0x79, 0xe6, 0x8b, 0x22, 0xaa, 0x01, + 0xe6, 0x17, 0x45, 0x40, 0x01, 0xe6, 0x8f, 0xa2, 0x80, 0xf9, 0xe7, 0x13, + 0x45, 0x15, 0x79, 0xc6, 0x09, 0x22, 0x8a, 0x03, 0x0e, 0x10, 0x50, 0x00, + 0x07, 0x1f, 0x2a, 0xa8, 0x80, 0xff, 0xff, 0x53, 0x55, 0x55, 0xfe, 0xff, + 0xab, 0xaa, 0x2a, 0xfc, 0xff, 0x53, 0x55, 0x15};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/ecosiconmask.xbm @@ -0,0 +1,10 @@ +#define ecosiconmask_width 40 +#define ecosiconmask_height 16 +static unsigned char ecosiconmask_bits[] = { + 0xfc, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0x7f, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, + 0xff, 0xff, 0x7f, 0xfc, 0xff, 0xff, 0xff, 0x3f};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/ecosynth.c @@ -0,0 +1,364 @@ +//============================================================================ +// +// ecosynth.c +// +// The eCos synthetic target I/O auxiliary +// +//============================================================================ +//####COPYRIGHTBEGIN#### +// +// ---------------------------------------------------------------------------- +// Copyright (C) 2002 Bart Veer +// +// This file is part of the eCos host tools. +// +// This program is free software; you can redistribute it and/or modify it +// under the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 of the License, or (at your option) +// any later version. +// +// This program is distributed in the hope that it will be useful, but WITHOUT +// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +// more details. +// +// You should have received a copy of the GNU General Public License along with +// this program; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// ---------------------------------------------------------------------------- +// +//####COPYRIGHTEND#### +//============================================================================ +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contact(s): bartv +// Date: 2002-08-05 +// Version: 0.01 +// Description: +// +// The main module for the eCos synthetic target auxiliary. This +// program is fork'ed and execve'd during the initialization phase of +// any synthetic target application, and is primarily responsible for +// I/O operations. This program should never be run directly by a +// user. +// +//####DESCRIPTIONEND#### +//============================================================================ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <signal.h> +#include <limits.h> +#include <unistd.h> +#include <assert.h> +#include <fcntl.h> +#include <sys/param.h> +#include <sys/types.h> +#include <tcl.h> +#include <tk.h> + +// The protocol between host and target is defined by a private +// target-side header. +#include "../src/synth_protocol.h" + +// ---------------------------------------------------------------------------- +// Statics etc. +#define PROGNAME "Synthetic target auxiliary" + +static int no_windows = 0; // -nw arg + +static pid_t parent_pid; + +// ---------------------------------------------------------------------------- +// Overview. +// +// When a synthetic target application is executed, whether directly +// or from inside gdb, it can fork() and execve() the synthetic +// target auxiliary: this program, ecosynth. For now this is disabled +// by default but can be enabled using a --io option on the command line. +// In future it may be enabled by default, but can be suppressed using +// --nio. +// +// stdin, stdout, and stderr will be inherited from the eCos application, so +// that attempts to use printf() or fprintf(stderr, ) from inside the +// auxiliary or its helper applications work as expected. In addition file +// descriptor 3 will be a pipe from the eCos application, and file descriptor +// 4 will be a pipe to the application. The protocol defined in +// ../src/synth_protocol.h runs over these pip +// +// argv[] and environ are also as per the application, with the exception +// of argv[0] which is the full path to this application. +// +// The bulk of the hard work is done inside Tcl. The C++ code is +// responsible only for initialization and for implementing some +// additional commands, for example to send a SIGIO signal to the +// parent when there is a new pending interrupt. The primary script is +// ecosynth.tcl which should be installed alongside the executable. +// +// This code makes use of the standard Tcl initialization facilities: +// +// 1) main() calls Tcl_Main() with the command-line arguments and an +// application-specific initialization routine ecosynth_appinit(). +// +// 2) Tcl_Main() goes through the initialization sequence in generic/tclMain.c. +// There is one slight complication: Tcl_main() interprets arguments in +// a way that makes sense for tclsh, but not for ecosynth. Specially if +// argv[1] exists and does not begin with a - then it will be interpreted +// as a script to be executed. Hence argv[] is re-allocated and the name +// of a suitable script is inserted. +// +// 3) ecosynth_appinit() initializes the Tcl interpreter, and optionally +// the Tk interpreter as well. This is controlled by the presence of +// a -nw argument on the command line. This initialization routine +// also takes care of adding some commands to the Tcl interpreter. +// +// 4) Tcl_Main() will now proceed to execute the startup script, which +// is eccentric.tcl installed in the libexec directory. + +static int ecosynth_appinit(Tcl_Interp*); + +int +main(int argc, char** argv) +{ + char ecosynth_tcl_path[_POSIX_PATH_MAX]; + char** new_argv; + int i; + + parent_pid = getppid(); + + // The various core Tcl scripts are installed in the same + // directory as ecosynth. The Tcl script itself will check whether + // there is a newer version of itself in the source tree and + // switch to that instead. + assert((strlen(LIBEXECDIR) + strlen(PACKAGE_INSTALL) + 20) < _POSIX_PATH_MAX); + strcpy(ecosynth_tcl_path, LIBEXECDIR); + strcat(ecosynth_tcl_path, "/ecos/"); + strcat(ecosynth_tcl_path, PACKAGE_INSTALL); + strcat(ecosynth_tcl_path, "/ecosynth.tcl"); + + // Installation sanity checks. + if (0 != access(ecosynth_tcl_path, F_OK)) { + fprintf(stderr, PROGNAME ": error, a required Tcl script has not been installed.\n"); + fprintf(stderr, " The script is \"%s\"\n", ecosynth_tcl_path); + exit(EXIT_FAILURE); + } + if (0 != access(ecosynth_tcl_path, R_OK)) { + fprintf(stderr, PROGNAME ": error, no read access to a required Tcl script.\n"); + fprintf(stderr, " The script is \"%s\"\n", ecosynth_tcl_path); + exit(EXIT_FAILURE); + } + + // Look for options -nw and -w. This information is needed by the appinit() routine. + no_windows = 0; + for (i = 1; i < argc; i++) { + if ((0 == strcmp("-nw", argv[i])) || (0 == strcmp("--nw", argv[i])) || + (0 == strcmp("-no-windows", argv[i])) || (0 == strcmp("--no-windows", argv[i]))) { + no_windows = 1; + } else if ((0 == strcmp("-w", argv[i])) || (0 == strcmp("--w", argv[i])) || + (0 == strcmp("-windows", argv[i])) || (0 == strcmp("--windows", argv[i]))) { + no_windows = 0; + } + } + + new_argv = malloc((argc+2) * sizeof(char*)); + if (NULL == new_argv) { + fprintf(stderr, PROGNAME ": internal error, out of memory.\n"); + exit(EXIT_FAILURE); + } + new_argv[0] = argv[0]; + new_argv[1] = ecosynth_tcl_path; + for (i = 1; i < argc; i++) { + new_argv[i+1] = argv[i]; + } + new_argv[i+1] = NULL; + + // Ignore SIGINT requests. Those can happen if e.g. the application is + // ctrl-C'd or if a gdb session is interrupted because this process is + // a child of the eCos application. Instead the normal code for handling + // application termination needs to run. + signal(SIGINT, SIG_IGN); + + // Similarly ignore SIGTSTP if running in graphical mode, it would + // be inappropriate for the GUI to freeze if the eCos application is + // suspended. If running in text mode then it is better for both + // the application and the I/O auxiliary to freeze, halting any further + // output. + if (!no_windows) { + signal(SIGTSTP, SIG_IGN); + } + + Tcl_Main(argc+1, new_argv, &ecosynth_appinit); + return EXIT_SUCCESS; +} + + +// ---------------------------------------------------------------------------- +// Commands for the Tcl interpreter. These are few and far between because +// as much work as possible is done in Tcl. + +// Send a SIGIO signal to the parent process. This is done whenever a new +// interrupt is pending. There is a possibility of strange behaviour if +// the synthetic target application is exiting at just the wrong moment +// and this process has become a zombie. An alternative approach would +// involve loading the Extended Tcl extension. +static int +ecosynth_send_SIGIO(ClientData clientData __attribute__ ((unused)), + Tcl_Interp* interp, + int argc, + char** argv __attribute__ ((unused))) +{ + if (1 != argc) { + Tcl_SetResult(interp, "wrong # args: should be \"usbtest::_send_SIGIO\"" , TCL_STATIC); + return TCL_ERROR; + } + + (void) kill(parent_pid, SIGIO); + return TCL_OK; +} + +// Similarly send a SIGKILL (-9) to the parent process. This allows the GUI +// code to kill of the eCos application +static int +ecosynth_send_SIGKILL(ClientData clientData __attribute__ ((unused)), + Tcl_Interp* interp, + int argc, + char** argv __attribute__ ((unused))) +{ + if (1 != argc) { + Tcl_SetResult(interp, "wrong # args: should be \"usbtest::_send_SIGIO\"" , TCL_STATIC); + return TCL_ERROR; + } + + (void) kill(parent_pid, SIGKILL); + return TCL_OK; +} + + +// ---------------------------------------------------------------------------- +// Application-specific initialization. + +static int +ecosynth_appinit(Tcl_Interp* interp) +{ + Tcl_Channel from_app; + Tcl_Channel to_app; + + // Tcl library initialization. This has the effect of executing init.tcl, + // thus setting up package load paths etc. Not all of that initialization + // is necessarily appropriate for ecosynth, but some devices may well want + // to load in additional packages or whatever. + if (Tcl_Init(interp) == TCL_ERROR) { + return TCL_ERROR; + } + // Optionally initialize Tk as well. This can be suppressed by an + // argument -nw. Possibly this could be done by the Tcl script + // instead using dynamic loading. + // + // There is a problem with the way that Tk does its argument processing. + // By default it will accept abbreviations for the standard wish arguments, + // so if the user specifies e.g. -v then the Tk code will interpret this + // as an abbreviation for -visual, and will probably complain because + // -visual takes an argument whereas ecosynth's -v is just a flag. + // + // The Tk argument processing can be suppressed simply by temporarily + // getting rid of the argv variable. The disadvantage is that some + // standard arguments now have to be processed explicitly: + // + // -colormap map ignored, of little interest these days + // -display display currently ignored. This would have to be + // implemented at the C level, not the Tcl level, + // since Tk_Init() will start interacting with the + // X server. Its implementation would involve a + // setenv() call. + // -geometry geom implemented in the Tcl code using "wm geometry" + // -name name ignored for now. + // -sync ignored, of little interest to typical users + // -use id ignored, probably of little interest for now + // -visual visual ignored, of little interest these days + // + // so actually the only extra work that is required is for the Tcl code + // to process -geometry. + if (!no_windows) { + Tcl_Obj* argv = Tcl_GetVar2Ex(interp, "argv", NULL, TCL_GLOBAL_ONLY); + Tcl_IncrRefCount(argv); + Tcl_UnsetVar(interp, "argv", TCL_GLOBAL_ONLY); + if (Tk_Init(interp) == TCL_ERROR) { + return TCL_ERROR; + } + Tcl_SetVar2Ex(interp, "argv", NULL, argv, TCL_GLOBAL_ONLY); + Tcl_DecrRefCount(argv); + } + + // Create the synth:: namespace. Currently this does not seem to be possible from + // inside C. + if (TCL_OK != Tcl_Eval(interp, + "namespace eval synth {\n" + " variable channel_from_app 0\n" + " variable channel_to_app 0\n" + "}\n")) { + fprintf(stderr, PROGNAME ": internal error, failed to create Tcl synth:: namespace\n"); + fprintf(stderr, " Please check Tcl version (8.3 or later required).\n"); + exit(EXIT_FAILURE); + } + + // The pipe to/from the application is exposed to Tcl, allowing + // the main communication to be handled at the Tcl level and + // specifically via the event loop. This requires two additional + // Tcl channels to be created for file descriptors 3 and 4. + from_app = Tcl_MakeFileChannel((ClientData) 3, TCL_READABLE); + if (NULL == from_app) { + fprintf(stderr, PROGNAME ": internal error, failed to create Tcl channel for pipe from application.\n"); + exit(EXIT_FAILURE); + } + Tcl_RegisterChannel(interp, from_app); + + // The channel name will be something like file0. Add a variable to the + // interpreter to store this name. + if (NULL == Tcl_SetVar(interp, "synth::_channel_from_app", Tcl_GetChannelName(from_app), TCL_GLOBAL_ONLY)) { + fprintf(stderr, PROGNAME ": internal error, failed to create Tcl variable from application channel 0\n"); + exit(EXIT_FAILURE); + } + + // Repeat for the channel to the application. + to_app = Tcl_MakeFileChannel((ClientData) 4, TCL_WRITABLE); + if (NULL == to_app) { + fprintf(stderr, PROGNAME ": internal error, failed to create Tcl channel for pipe to application.\n"); + exit(EXIT_FAILURE); + } + Tcl_RegisterChannel(interp, to_app); + if (NULL == Tcl_SetVar(interp, "synth::_channel_to_app", Tcl_GetChannelName(to_app), TCL_GLOBAL_ONLY)) { + fprintf(stderr, PROGNAME ": internal error, failed to create Tcl variable from application channel 1\n"); + exit(EXIT_FAILURE); + } + + // The auxiliary may spawn additional programs, via + // device-specific scripts. Those programs should not have + // direct access to the pipe - that would just lead to + // confusion. + fcntl(3, F_SETFD, FD_CLOEXEC); + fcntl(4, F_SETFD, FD_CLOEXEC); + + // Add synthetic target-specific commands to the Tcl interpreter. + Tcl_CreateCommand(interp, "synth::_send_SIGIO", &ecosynth_send_SIGIO, (ClientData)NULL, (Tcl_CmdDeleteProc*) NULL); + Tcl_CreateCommand(interp, "synth::_send_SIGKILL", &ecosynth_send_SIGKILL, (ClientData)NULL, (Tcl_CmdDeleteProc*) NULL); + + // Define additional variables. + + // The version, from the AM_INIT_AUTOMAKE() macro in configure.in + Tcl_SetVar(interp, "synth::_ecosynth_version", ECOSYNTH_VERSION, TCL_GLOBAL_ONLY); + + // The parent process id, i.e. that for the eCos application itself. + Tcl_SetVar2Ex(interp, "synth::_ppid", NULL, Tcl_NewIntObj(getppid()), TCL_GLOBAL_ONLY); + + // The various directories + Tcl_SetVar(interp, "synth::_ecosynth_repository", ECOS_REPOSITORY, TCL_GLOBAL_ONLY); + Tcl_SetVar(interp, "synth::_ecosynth_libexecdir", LIBEXECDIR, TCL_GLOBAL_ONLY); + Tcl_SetVar(interp, "synth::_ecosynth_package_dir", PACKAGE_DIR, TCL_GLOBAL_ONLY); + Tcl_SetVar(interp, "synth::_ecosynth_package_version", PACKAGE_VERSION, TCL_GLOBAL_ONLY); + Tcl_SetVar(interp, "synth::_ecosynth_package_install", PACKAGE_INSTALL, TCL_GLOBAL_ONLY); + + return TCL_OK; +}
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/ecosynth.tcl @@ -0,0 +1,3292 @@ +# {{{ Banner + +# ============================================================================ +# +# ecosynth.tcl +# +# The eCos synthetic target I/O auxiliary +# +# ============================================================================ +# ####COPYRIGHTBEGIN#### +# +# ---------------------------------------------------------------------------- +# Copyright (C) 2002 Bart Veer +# +# This file is part of the eCos host tools. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ---------------------------------------------------------------------------- +# +# ####COPYRIGHTEND#### +# ============================================================================ +# #####DESCRIPTIONBEGIN#### +# +# Author(s): bartv +# Contact(s): bartv +# Date: 2002/08/05 +# Version: 0.01 +# Description: +# The main script for the eCos synthetic target auxiliary. This should +# only ever be invoked from inside ecosynth. +# +# ####DESCRIPTIONEND#### +# ============================================================================ + +# }}} + +# {{{ Overview + +# When an eCos synthetic target application runs it will usually +# fork/execve an auxiliary program, ecosynth, to provide certain +# I/O functionality. This happens as part of hardware initialization. +# +# The ecosynth executable in turn runs this ecosynth.tcl script which +# either does most of the real work or delegates it to other scripts. +# Those other scripts may in turn exec other programs to perform any +# I/O operations that cannot easily be done at the Tcl level. For +# example performing low-level ethernet operations generally requires +# working at the C level or equivalent, so a separate executable would +# be appropriate. The ecosynth executable will transfer control to +# this script after the appinit() call, which should have performed +# certain initialization steps. +# +# 1) the Tcl interpreter will be fully initialized. +# +# 2) usually Tk will have been loaded and initialized as well. This +# can be suppressed using a command-line option -nw. +# +# 3) there will be a namespace synth:: for use by ecosynth.tcl +# Auxiliary scripts are expected to use their own namespace +# where possible. +# +# 4) there will be two channels synth::_channel_from_app and +# synth::_channel_to_app. These correspond to a pipe between +# the eCos application and the auxiliary. The application will +# send requests using this pipe and expect replies. I/O +# operations are always initiated by a request from the +# application, but the auxiliary can raise an interrupt via +# the SIGIO signal. +# +# Other standard channels stdin, stdout and stderr will have +# been inherited from the eCos application. +# +# 5) some Tcl commands implemented in C will have been added to the +# interpreter. The most notable is synth::_send_SIGIO, used to +# raise an interrupt within the application. +# +# 6) similarly some variables will have been added to the interpreter. +# +# +# Configuring everything can get somewhat complicated. It is the eCos +# application that knows what I/O facilities within the auxiliary it +# wants to access, but it may not know all the details. The eCos +# component architecture makes things a bit more complicated still, +# generic code such as this ecosynth.tcl script has no way of knowing +# what I/O facilities might be provided by some package or other. +# +# For example, a target-side ethernet driver may want to send outgoing +# ethernet packets to some script or program on the host and receive +# incoming ethernet packets. However it does not necessarily know what +# the host-side should do with those ethernet packets, e.g. use a +# spare Linux ethernet device, use the Linux kernel's ethertap +# facility, ... Although that kind of information could be handled by +# target-side configury, host-side configuration files will often be +# more appropriate. Specifically it would allow a single eCos +# synthetic target application to run in a variety of environments, +# using different ways to provide the I/O, with no need to do any +# reconfiguring or rebuilding of the target side. +# +# +# The basic approach that is taken is: +# +# 1) the eCos application tells the auxiliary what I/O facilities +# it is interested in. This should happen as a result +# of static constructors or of device driver initialization +# routines. The application has no control over the implementation +# of the I/O facilities, it just expects something on the other +# end to respond sensibly to requests. +# +# For example, a synthetic target ethernet driver will supply +# an initialization routine via its NETDEVTAB_ENTRY. This +# routine will send a request to the auxiliary asking for a +# device of type ethernet, id "eth0", provided by +# CYGPKG_DEVS_ETH_ECOSYNTH, version current. The auxiliary will +# now attempt to load a suitable Tcl script ethernet.tcl from a +# location determined using the package name and version. +# +# 2) there is a primary target definition file which can be +# specified as the final argument on the command line, with +# "default" being the default value. The code will look for +# this file with or without a .tdf extension, first in the +# current directory, then in ~/.ecos/synth/. This file is +# actually a Tcl script that gets executed in the current +# interpreter. However typically it will only contain +# entries such as: +# +# synth_device eth0 { +# ... +# } +# +# 3) There are additional optional configuration files +# ~/.ecos/synth/initrc.tcl and ~/.ecos/synth/mainrc.tcl which can +# be used for further customization. initrc.tcl will get run +# early on, mainrc.tcl will get run once initialization is +# complete. Specifically the target-side code will send an +# appropriate request after invoking all the static constructors. +# At this time the auxiliary will run mainrc.tcl, and in addition +# it may issue warnings about unused arguments etc. +# +# 4) there may also be separate configuration files for GUI +# preferences etc. These are distinct from the initrc and +# mainrc files in that they are generated rather than +# hand-written. + +# }}} +# {{{ Basic initialization + +# ---------------------------------------------------------------------------- +# There should be two channels corresponding to the pipe between the +# eCos application and the auxiliary. These should be configured +# appropriately. If either channel does not exist then that is a +# very good indication that the system is not properly initialized, +# i.e. that this script is not being run by the ecosynth executable +# and by implication that no eCos application is involved. + +if {([info exists synth::_channel_to_app] == 0) || + ([info exists synth::_channel_from_app] == 0) || + ([info exists synth::_ecosynth_version] == 0) || + ([info exists synth::_ppid] == 0) || + ([info exists synth::_ecosynth_repository] == 0) || + ([info exists synth::_ecosynth_libexecdir] == 0) || + ([info exists synth::_ecosynth_package_dir] == 0) || + ([info exists synth::_ecosynth_package_version] == 0) || + ([info exists synth::_ecosynth_package_install] == 0) || + ([info commands synth::_send_SIGIO] == "") || + ([info commands synth::_send_SIGKILL] == "") } { + + puts stderr "ecosynth.tcl: the current interpreter has not been properly initialized." + puts stderr " This script should only be invoked by the ecosynth executable when" + puts stderr " an eCos synthetic target application is run." + exit 1 +} + +# Is the script currently being executed the most recent version? +# This check should only happen if an environment variable +# ECOSYNTH_DEVEL is set, because the installed tools may have come +# from somewhere other than the current repository. +if { [info exists ::env(ECOSYNTH_DEVEL)] } { + set _orig_name [file join $synth::_ecosynth_repository $synth::_ecosynth_package_dir $synth::_ecosynth_package_version \ + "host" [file tail [info script]]] + if { [file exists $_orig_name] && [file readable $_orig_name] && ($_orig_name != [info script]) } { + if { [file mtime $_orig_name] >= [file mtime [info script]] } { + puts "$_orig_name is more recent than install: executing that." + source $_orig_name + return + } + } + unset _orig_name +} + +fconfigure $synth::_channel_to_app -buffering none +fconfigure $synth::_channel_from_app -encoding binary +fconfigure $synth::_channel_to_app -encoding binary +fconfigure $synth::_channel_from_app -translation binary +fconfigure $synth::_channel_to_app -translation binary + +# Define additional globals and procedures inside the synth:: namespace. +# Variables and functions that begin with an _ are considered internal +# and should not be used directly. +namespace eval synth { + + # Unfortunately the name of the eCos executable is lost at this stage. + # Within the eCos application it was held in argv[0], but that has been + # overridden with the name of the auxiliary. However we have access to the + # parent process id so we can use /proc to get the required information. + variable ecos_appname "" + catch { + set synth::ecos_appname [file readlink "/proc/[set synth::_ppid]/exe"] + set synth::ecos_appname [file tail $synth::ecos_appname] + } + + # The install location can be determined from the script name. + # This is used for e.g. loading bitmaps, even if ECOSYNTH_DEVEL + # is set, because some of the files may be generated. + # ECOSYNTH_DEVEL only affects Tcl scripts. + variable install_dir [file join $synth::_ecosynth_libexecdir "ecos" $synth::_ecosynth_package_install] + + # Is the eCos application still running? This is worth keeping + # track of so that send_reply and raise_interrupt do not try to + # interact with a program that is no longer running. + variable ecos_running 1 + + # This variable is used to enter the event loop + variable _ecosynth_exit 0 + + # Is GUI mode enabled? + variable flag_gui [expr { "" != [info commands "tk"] } ] + + # When running in GUI mode the GUI should stay up even after the application + # has exited, so that the user can take a good look around. When running in + # non-GUI mode this program should exit as soon it has finished cleaning up. + variable flag_immediate_exit [expr { 0 == $synth::flag_gui} ] + + # Is the GUI ready to accept output? + variable flag_gui_ready 0 + + # Flags and variables related to command-line arguments + variable flag_help 0 + variable flag_keep_going 0 + variable flag_no_rc 0 + variable flag_verbose 0 + variable flag_debug 0 + variable logfile "" + variable target_definition "" + variable geometry "<none>" +} + +# }}} +# {{{ Hooks & atexit support + +# ---------------------------------------------------------------------------- +# A lot of the flexibility of ecosynth is provided by hooks. Device scripts +# and, more importantly, the per-user initrc and mainrc scripts can install +# hooks that get called when an event occurs, for example when the eCos +# applications attempts to transmit an ethernet packet. +# +# A special hook is used to implement atexit handling. This involves redefining +# the "exit" command so that it will invoke the appropriate hooks first. + +namespace eval synth { + # All hooks are held in an array, indexed by the hook name, with each + # array entry being a list of functions to be invoked. + array set _hooks [list] + + proc hook_define { name } { + if { [info exists synth::_hooks($name)] } { + synth::report_error "Attempt to create hook $name which already exists.\n" + } else { + set synth::_hooks($name) [list] + } + } + + proc hook_defined { name } { + return [info exists synth::_hooks($name)] + } + + proc hook_add { name function } { + if { ! [info exists synth::_hooks($name)] } { + synth::report_error "Attempt to attach a function to an unknown hook $name\n" + set synth::_hooks($name) [list] + } + lappend synth::_hooks($name) $function + } + + proc hook_call { name args } { + if { ! [info exists synth::_hooks($name) ] } { + synth::report_error "Attempt to invoke unknown hook $name\n" + } else { + foreach function $synth::_hooks($name) { + $function $args + } + } + } + + # Define an initial set of hooks + synth::hook_define "exit" ;# The auxiliary is exiting + synth::hook_define "ecos_exit" ;# The eCos application has exited + synth::hook_define "ecos_initialized" ;# eCos static constructors have run + synth::hook_define "help" ;# --help +} + +# Rename the builtin exit command so that it can still be accessed. +rename exit _hook_real_exit + +# And define a replacement for exit which will invoke the appropriate +# hook. Care has to be taken in case of recursive exit calls, each +# hook function is only called once. + +proc exit { { code 0 } } { + while { [llength $synth::_hooks(exit)] > 0 } { + set handler [lindex $synth::_hooks(exit) end] + set synth::_hooks(exit) [lrange $synth::_hooks(exit) 0 end-1] + + # For now assume no errors - it is not clear what could be done + # about them anyway. + catch { eval $handler [list]} + } + _hook_real_exit $code +} + +# }}} +# {{{ Output + +# ---------------------------------------------------------------------------- +# The usual set of utilities for issuing warnings, errors, ... +# +# There are three possibilities to consider: +# +# 1) running in text-only mode. The output should just go to stdout +# +# 2) running in GUI mode and the text window exists. Just update the +# window +# +# 3) running in GUI mode but the text window is not yet ready. The +# output needs to be buffered for now, and will be flushed +# later. +# +# Also, if for some reason this program exits while there is output still +# buffered that output should also go to stdout. +# +# If any errors occur during initialization, e.g. an invalid device script +# or user initialization scripts, those get reported and an error count +# is maintained. When the eCos application reports that initialization is +# complete it will be sent back a status for the auxiliary, and will +# exit if things have not started up correctly. This tries to ensure that +# if there are multiple errors the user sees all of them. + +namespace eval synth { + + variable _pending_output [list] + variable _logfd "" + variable _error_count 0 + + proc logfile_open { } { + synth::report "Opening logfile $synth::logfile" + set msg "" + if { [catch { set synth::_logfd [open $synth::logfile "w"] } msg ] } { + synth::report_error "Unable to open logfile \"$synth::logfile\"\n $msg\n" + } + } + + # A default implementation of output. This gets overwritten later when running + # in GUI mode, so if GUI mode is enabled then this proc must be called before + # the GUI is ready and the data must be queued. + proc output { msg filter } { + if { ! $synth::flag_gui } { + # If a logfile exists, output normally goes there rather than + # to standard output. The exception is for errors which + # always go to stderr, in addition to the logfile. + if { "" != $synth::_logfd } { + puts -nonewline $synth::_logfd $msg + if { "error" == $filter } { + puts -nonewline stderr $msg + } + } else { + if { "error" == $filter } { + puts -nonewline stderr $msg + } else { + puts -nonewline $msg + } + } + } else { + lappend synth::_pending_output [list $msg $filter] + } + } + + # Invoked by the text window code once everything is ready + # and synth::output has been redefined. + proc _flush_output { } { + foreach msg $synth::_pending_output { + synth::output [lindex $msg 0] [lindex $msg 1] + } + set synth::_pending_output [list] + } + + # Cope with early exits. This will only have an effect if + # _flush_output has not been called yet, and by implication + # if synth::output has not yet been redefined. + proc _exit_flush_output { arg_list } { + if { 0 != [llength $synth::_pending_output] } { + set synth::flag_gui 0 + synth::_flush_output + } + } + synth::hook_add "exit" synth::_exit_flush_output + + proc report { msg } { + synth::output $msg "report" + } + + proc report_warning { msg } { + synth::output "Warning: $msg" "warning" + } + + proc report_error { msg } { + incr synth::_error_count + synth::output "Error: $msg" "error" + } + + # Internal errors indicate a serious problem within ecosynth or + # a device-specific script. For now this results in output to + # stderr, a backtrace, and termination of the auxiliary, which + # should also cause the eCos application to shut down. + # + # An alternative approach would involve calling ::error and + # benefitting from its backtrace generation, but there are various + # places where it makes to sense to catch problems and call + # synth::error rather than internal_error + proc internal_error { msg } { + puts stderr "ecosynth, an internal error has occurred:" + puts stderr " $msg" + puts stderr "---------- backtrace -------------------------------------------------" + for { set level [info level] } { $level > 0 } { incr level -1 } { + puts stderr [info level $level] + } + puts stderr "----------------------------------------------------------------------" + puts stderr "ecosynth, exiting." + exit 1 + } + + # Dummy implementations of the exported filter routines, in case a script + # tries to create a filter even when not running in graphical mode + variable _dummy_filters [list] + + proc filter_exists { name } { + set result 0 + if { -1 != [lsearch -exact $synth::_dummy_filters $name] } { + set result 1 + } + return $result + } + + proc filter_get_list { } { + return $synth::_dummy_filters + } + + proc filter_add { name args } { + if { [synth::filter_exists $name] } { + synth::internal_error "attempt to install filter $name twice.\n" + } + lappend synth::_dummy_filters $name + } +} + +# }}} +# {{{ Argument processing and global options + +# ---------------------------------------------------------------------------- +# Argument processing. The eCos application will usually just pass its +# command line arguments to the auxiliary. Four special arguments will +# have been examined already: +# +# -io, --io +# I/O facilities, i.e. the auxiliary should run +# -ni, -nio, --ni, --nio +# No I/O facilities, i.e. the auxiliary should not be run. +# -nw, --nw, --no-windows +# No windows, i.e. disable the GUI +# -w, --w, --windows +# Enable the GUI +# +# There are a number of additional flags available as standard: +# +# -v, --version +# The usual +# -h, --help +# Ditto +# -k, --k, --keep-going +# Ignore errors as much as possible +# -nr, --no-rc +# Skip the initrc and mainrc files +# -x, --exit +# The auxiliary should exit at the same time as the eCos application. +# -nx, --no-exit +# Inverse of the above +# -V, --verbose +# The usual +# --debug +# Not intended for end users +# -l <file>, -l=<file>, --logfile <file>, --logfile=<file> +# Send all output to the specified file. In GUI mode this is in addition +# to the main text window. In non-GUI mode this is instead of stdout. +# -t <file>, -t=<file>, --target <file>, --target=<file> +# Specify the target definition file. +# +# Many X applications accept a common set of options, e.g. -display, +# -geometry, etc. Although usually Tk will process these, there are +# some problems - see ecosynth.c, ecosynth_appinit() for details. +# Hence -geometry has to be processed here. +# +# -geometry <geom> +# +# +# Some device-specific scripts may want to support additional +# command line arguments. This is somewhat messy, since the core +# code has no way of knowing what devices might be available and +# hence what the actual valid arguments are. It would be possible +# to just ignore any arguments that are not used by any device, +# but that could really confuse a user who has made a typo. Instead +# the code below keeps track of which arguments have been "consumed", +# allowing it to issue a warning about unconsumed arguments after +# initialization. +# +# Arguments can take the following forms: +# +# 1) -flag or --flag. +# 2) -name=value or --name=value +# 3) -name value or --name value +# +# There is a possibility of confusion if any of the values begin with a hyphen. +# It is hard to do anything about this without advance knowledge of what all +# the valid arguments are. Instead the user can avoid problems by using +# the -name=value variant on the command line. +# +# There is also possible confusion if a single argument can occur multiple +# times. If that is permitted then things can get rather messy, and +# the current API does not really handle it. + +namespace eval synth { + + # Keep track of all arguments which have not yet been consumed. + array set _argv_unconsumed [list] + for { set i 0 } { $i < $::argc } { incr i } { + set synth::_argv_unconsumed($i) [lindex $::argv $i] + } + + # Provide a list of just those arguments that have not yet + # been consumed. + proc argv_get_unconsumed { } { + set result [list] + for { set i 0 } { $i < $::argc } {incr i } { + if { [info exists synth::_argv_unconsumed($i)] } { + lappend result $synth::_argv_unconsumed($i) + } + } + return $result + } + + proc _argv_consume { index } { + if { [info exists synth::_argv_unconsumed($index)] } { + unset synth::_argv_unconsumed($index) + } + } + + # Internal routine. Given a string of the form "-flag" or "-name=", + # return an index within argv or -1 if not found. As a side effect + # this "consumes" the argument. + proc _argv_lookup { name } { + set result -1 + if { "=" != [string index $name end] } { + for { set i 0 } { $i < $::argc } { incr i } { + set arg [lindex $::argv $i] + if { [string equal $arg $name] || [string equal $arg "-[set name]"] } { + set result $i + synth::_argv_consume $i + break + } + } + } else { + set name [string range $name 0 end-1] + set len [string length $name] + for { set i 0 } { $i < $::argc } { incr i } { + set arg [lindex $::argv $i] + if { [string equal -length $len $arg $name] } { + if { "=" == [string index $arg $len] } { + set result $i + synth::_argv_consume $i + break; + } elseif { ([string length $arg] == $len) && ($i < ($::argc - 1)) } { + set result $i + synth::_argv_consume $i + synth::_argv_consume [expr $i + 1] + break + } + } elseif { [string equal -length [expr $len + 1] $arg "-[set name]"] } { + if { "=" == [string index $arg [expr $len + 1]] } { + set result $i + synth::_argv_consume $i + break + } elseif { ([string length $arg] == [expr $len + 1]) && ($i < ($::argc - 1)) } { + set result $i + synth::_argv_consume $i + synth::_argv_consume [expr $i + 1] + break + } + } + } + } + return $result + } + + # Look for a given argument on the command line. + proc argv_defined { name } { + set result 0 + set index [synth::_argv_lookup $name] + if { -1 != $index } { + set result 1 + } + return $result + } + + # Return the value associated with a given argument, which must be present. + proc argv_get_value { name } { + if { "=" != [string index $name end] } { + synth::internal_error "attempt to get a value for a simple flag argument \"$name\".\n" + } + set result "" + set index [synth::_argv_lookup $name] + if { -1 == $index } { + synth::internal_error "attempt to get the value associated with a non-existent argument \"$name\".\n" + } + set arg [lindex $::argv $index] + set len [string length $name] + if { [string equal -length $len $arg $name] } { + set result [string range $arg $len end] + } elseif { [string equal -length [expr $len + 1] $arg "-[set name]"] } { + set result [string range $arg [expr $len + 1] end] + } else { + set result [lindex $::argv [expr $index + 1]] + } + return $result + } + + # -ni/-nio are not relevant. If present then they would have been handled + # within the eCos application, the auxiliary would not have been spawned, + # and this script would not be running. + + # -io will have been processed by the eCos application. + # -nw, -w, and related options have been processed by the C code. + # Look them up anyway to consume them. + synth::_argv_lookup "-io" + synth::_argv_lookup "-nw" + synth::_argv_lookup "-no-windows" + synth::_argv_lookup "-w" + synth::_argv_lookup "-windows" + + # Now cope with the other standard flags + if { [synth::argv_defined "-v"] || [synth::argv_defined "--version"] } { + # Just output the version message and exit. The eCos application + # will do the same. The version is obtained from configure.in, + # and also from the install directory. The synthetic target + # startup code will exit quietly if the auxiliary exits at this + # stage. This output should go via puts rather than the + # synth:: output routines, since the GUI will never appear if + # --version is specified. + puts "ecosynth: version $synth::_ecosynth_version" + puts " : install location [file dirname [info script]]" + exit 0 + } + + if { [synth::argv_defined "-l="] } { + set synth::logfile [synth::argv_get_value "-l="] + } elseif { [synth::argv_defined "-logfile="] } { + set synth::logfile [synth::argv_get_value "-logfile="] + } + if { "" != $synth::logfile } { + synth::logfile_open + } + + # -h/--help would normally also result in an immediate exit. However, + # the device-specific scripts have not yet been loaded so there + # is no way of reporting their options. Hence the usage information + # is delayed until later. Suppressing GUI mode as a side effect is + # probably a good idea as well, that way the output appears in the + # current console window. + if { [synth::argv_defined "-h"] || [synth::argv_defined "-help"] } { + set synth::flag_help 1 + set synth::flag_gui 0 + } + + if { [synth::argv_defined "-debug"] } { + set synth::flag_debug 1 + } + + if { [synth::argv_defined "-k"] || [synth::argv_defined "-keep-going"] } { + set synth::flag_keep_going 1 + } + + if { [synth::argv_defined "-nr"] || [synth::argv_defined "-no-rc"]} { + set synth::flag_no_rc 1 + } + + if { [synth::argv_defined "-x"] || [synth::argv_defined "-exit"] } { + set synth::flag_immediate_exit 1 + } elseif { [synth::argv_defined "-nx"] || [synth::argv_defined "-no-exit"] } { + set synth::flag_immediate_exit 0 + } + + if { [synth::argv_defined "-V"] || [synth::argv_defined "-verbose"] } { + set synth::flag_verbose 1 + } + + if { [synth::argv_defined "-t="] } { + set synth::target_definition [synth::argv_get_value "-t="] + } elseif { [synth::argv_defined "-target="] } { + set synth::target_definition [synth::argv_get_value "-target="] + } + + # Arguably -geometry should only be checked when the GUI is enabled, + # but doing so at all times is harmless. + # Note that '-geometry ""' means that any value held in the + # preferences file should be ignored. Hence the regexp below + # accepts the empty string, and treats it separately from + # uninitialized. + if { [synth::argv_defined "-geometry="] } { + set synth::geometry [synth::argv_get_value "-geometry="] + + if { ![regexp -- {^([0-9]+x[0-9]+)?([+-][0-9]+[+-][0-9]+)?$} $synth::geometry] } { + synth::report_warning "Invalid geometry string $synth::geometry\n" + set synth::geometry "<none>" + } + } + + if { $synth::flag_debug } { + synth::report \ + "Results of initial command-line parsing:\n \ + --help $synth::flag_help\n \ + --keep-going $synth::flag_keep_going\n \ + --no-rc $synth::flag_no_rc\n \ + --exit $synth::flag_immediate_exit\n \ + --verbose $synth::flag_verbose\n \ + logfile $synth::logfile\n \ + target definition $synth::target_definition\n \ + geometry $synth::geometry\n \ + unconsumed [synth::get_unconsumed_args]\n" + } +} + +# }}} +# {{{ Create and populate ~/.ecos/synth + +# ---------------------------------------------------------------------------- +# If the per-user configuration directories do not exist yet, create them. +# Also install default initrc.tcl and mainrc.tcl files which do nothing, but +# which can be edited. If problems occur then the user gets a warning +# but execution proceeds. +# +# Some people may object to this automatic creation of directories and +# configuration files. However there is plenty of precedent, and the +# files involved are small. Messages are generated so that the user +# knows what has happened. +# +# Currently the default target definition file is not copied from +# the install tree into the per-user tree. Although some users will +# be happy having this file in ~/.ecos/synth, others may prefer it +# to be more visible in the current directory. + +if { ![file exists "~/.ecos"] } { + synth::report "Creating new directory ~/.ecos for eCos configuration files.\n" + if { 0 != [catch { file mkdir "~/.ecos" }] } { + synth::report_warning "failed to create directory ~/.ecos\n" + } +} +if { [file exists "~/.ecos"] && [file isdirectory "~/.ecos"] && ![file exists "~/.ecos/synth"] } { + synth::report "Creating new directory ~/.ecos/synth for synthetic target configuration files.\n" + if { 0 != [catch { file mkdir "~/.ecos/synth" } ] } { + synth::report_warning "failed to create directory ~/.ecos/synth\n" + } else { + # initrc and mainrc are only copied when the directory is first created, + # so that users can delete them if unwanted - even though the + # default versions do nothing. + synth::report "Installing default configuration files ~/.ecos/synth/initrc.tcl and ~/.ecos/synth/mainrc.tcl\n" + catch { file copy -- [file join $synth::install_dir "user_initrc.tcl"] "~/.ecos/synth/initrc.tcl"} + catch { file copy -- [file join $synth::install_dir "user_mainrc.tcl"] "~/.ecos/synth/mainrc.tcl"} + } +} + +# }}} +# {{{ Read target definition file + +# ---------------------------------------------------------------------------- +# Once the GUI is up and running it is possible to start reading in some +# configuration files. The first of these is the target definition file. +# Typically this would be ~/.ecos/synth/default.tdf. An alternative +# definition file can be specified on the command line with the +# -t argument, and the code will look in the current directory, +# in ~/.ecos/synth, and in the install tree. +# +# The purpose of the target definition file is to specify exactly +# how I/O gets implemented. For example the eCos application may +# want to access a network device eth0, but that device could be +# implemented in a variety of ways (e.g. a real ethernet device +# on the Linux host, or a fake device provided by the ethertap +# facility). It is the target definition file that provides +# this information. +# +# The file is of course just another Tcl script, running in the +# current interpreter. There seems little point in using a safe +# interpreter given the considerable number of other Tcl scripts +# that are being used, some of which need the ability to e.g. +# run other programs. The main command is synth_device which +# takes two arguments, a device name and some options for that +# device, e.g.: +# +# synth_device eth0 { +# use eth1 +# } +# +# synth_device eth1 { +# use tap0 +# } +# +# When the eCos device driver looks up eth0 this will cause a +# device-specific Tcl script to be loaded, which can examine +# this data. +# +# This code has no way of knowing what constitutes valid or invalid +# contents for an eth0 device, especially since the Tcl script that +# could provide such knowledge has not been loaded. Instead it is +# assumed that the contents is another set of Tcl commands such as +# "physical", which will of course not be defined so the Tcl interpreter +# will invoke "unknown" which is temporarily redefined here. This makes +# it possible for the device-specific commands to have arbitrary number +# of arguments, or to define Tcl fragments for hooks, or whatever. +# +# As with argument processing, the code attempts to keep track of +# which devices and options have been "consumed" and can issue +# warnings about any unused devices or options. This helps to track +# down typos and similar problems. These warnings are only output +# when running at verbose mode, since it is fairly normal practice +# to have a single target definition file which supports +# a number of different eCos applications with different I/O +# requirements. + +namespace eval synth { + # A list of all devices specified in the target definition file. + # For now assume that a given device will only be specified once. + variable _tdf_devices [list] + + # An array with additional details of each device. This will have + # entries such as _tdf_device_options(eth0,4), where the second + # argument is a per-device index. The value of each entry is + # a list of the actual command and its arguments. This use of + # an index allows for multiple instances of a per-device + # option. + array set _tdf_device_options [list] + + # While reading in the device details it is necessary to keep track + # of the current device, if any. Otherwise the implementation of + # "unknown" will not be able to update _tdf_device_options. An index + # is needed as well. + variable _tdf_current_device "" + variable _tdf_current_index 0 + + # Keep track of which devices and options have been consumed + variable _tdf_consumed_devices [list] + variable _tdf_consumed_options [list] + + proc tdf_has_device { name } { + return [expr -1 != [lsearch -exact $synth::_tdf_devices $name]] + } + + proc tdf_get_devices { } { + return $synth::_tdf_devices + } + + proc _tdf_get_option_index { devname option } { + synth::_tdf_consume_device $devname + for { set i 0 } { [info exists synth::_tdf_device_options($devname,$i)] } { incr i } { + if { $option == [lindex $synth::_tdf_device_options($devname,$i) 0] } { + synth::_tdf_consume_option $devname $i + return $i + } + } + return -1 + } + + proc _tdf_get_option_indices { devname option } { + synth::_tdf_consume_device $devname + set result [list] + for { set i 0 } { [info exists synth::_tdf_device_options($devname,$i)] } { incr i } { + if { $option == [lindex $synth::_tdf_device_options($devname,$i) 0] } { + synth::_tdf_consume_option $devname $i + lappend result $i + } + } + return $result + } + + proc tdf_has_option { devname option } { + return [expr -1 != [synth::_tdf_get_option_index $devname $option]] + } + + proc tdf_get_option { devname option } { + set index [synth::_tdf_get_option_index $devname $option] + if { -1 != $index } { + lappend synth::_tdf_consumed_options "$devname,$index" + return [lrange $synth::_tdf_device_options($devname,$index) 1 end] + } else { + return [list] + } + } + + proc tdf_get_options { devname option } { + set result [list] + set indices [synth::_tdf_get_option_indices $devname $option] + foreach index $indices { + lappend result [lrange $synth::_tdf_device_options($devname,$index) 1 end] + } + return $result + } + + proc tdf_get_all_options { devname } { + set result [list] + for { set i 0 } { [info exists synth::_tdf_device_options($devname,$i)] } { incr i } { + lappend synth::_tdf_consumed_options "$devname,$index" + lappend result $synth::_tdf_device_options($devname,$i) + } + return $result + } + + proc _tdf_consume_device { name } { + if { -1 == [lsearch -exact $synth::_tdf_consumed_devices $name] } { + lappend synth::_tdf_consumed_devices $name + } + } + + proc _tdf_consume_option { devname index } { + if { -1 == [lsearch -exact $synth::_tdf_consumed_options "$devname,$index"] } { + lappend synth::_tdf_consumed_options "$devname,$index" + } + } + + proc tdf_get_unconsumed_devices { } { + set result [list] + foreach devname $synth::_tdf_devices { + if { -1 == [lsearch -exact $synth::_tdf_consumed_devices $devname] } { + lappend result $devname + } + } + return $result + } + + proc tdf_get_unconsumed_options { } { + set result [list] + foreach devname $synth::_tdf_devices { + if { -1 == [lsearch -exact $synth::_tdf_consumed_devices $devname] } { + # Do not report all the options for a device that has not been consumed at all + continue + } + for { set i 0 } { [info exists synth::_tdf_device_options($devname,$i)] } { incr i } { + if { -1 == [lsearch -exact $synth::_tdf_consumed_options "$devname,$i"] } { + lappend result [list $devname $synth::_tdf_device_options($devname,$i)] + } + } + } + return $result + } +} + +# Look for the target definition file. +set _tdf $synth::target_definition +if { "" == $_tdf } { + set _tdf "default" +} +set _config_file "" + +set _dirlist [list [pwd] "~/.ecos/synth" $synth::install_dir] +foreach _dir $_dirlist { + set _candidate "[file join $_dir $_tdf].tdf" ; # file join does the right thing for absolute paths + if { [file isfile $_candidate] } { + set _config_file $_candidate + break + } else { + set _candidate [file join $_dir $_tdf] + if { [file isfile $_candidate] } { + set _config_file $_candidate + break + } + } +} +if { "" == $_config_file } { + if { "" != $synth::target_definition } { + # The user explicitly specified a file, so it must be read in. + # If it cannot be found then that should be treated as an error. + set msg "Unable to find target definition file $synth::target_definition\n" + if { "absolute" != [file pathtype $synth::target_definition] } { + append msg " Searched $_dirlist\n" + } + synth::report_error $msg + exit 1 + } else { + # This is a mild error, because default.tdf should be installed + # below libexec. However the default file does not actually + # define anything, it is just a set of comments, so there is + # nothing to be gained by issuing a warning. + } +} else { + + set synth::target_definition $_config_file + + proc synth_device { name data } { + if { "" != $synth::_tdf_current_device } { + error "synth_device $name is nested inside $synth::_tdf_current_device\nNesting of synth_device entries is not allowed." + } + if { -1 != [lsearch -exact $synth::_tdf_devices $name] } { + error "Duplicate entry for synth_device $name" + } + set synth::_tdf_current_device $name + set synth::_tdf_current_index 0 + lappend synth::_tdf_devices $name + eval $data + # If the eval resulted in an error, propagate it immediately rather than attempt + # any form of recovery. The downside is that only error per run will be + # reported. + set synth::_tdf_current_device "" + } + rename unknown _synth_unknown + proc unknown { args } { + if { "" == $synth::_tdf_current_device } { + # An unknown command at the toplevel. Pass this to the + # original "unknown" command, in the unlikely event that + # the user really did want to autoload a library or do + # something similar. + eval _synth_unknown $arg + return + } + + # Anything else is treated as an option within the synth_device + set synth::_tdf_device_options($synth::_tdf_current_device,$synth::_tdf_current_index) $args + incr synth::_tdf_current_index + } + + set _config_file_msg "" + set _result [catch { source $_config_file } _config_file_msg ] + + rename unknown "" + rename synth_device "" + rename _synth_unknown unknown + + if { $_result } { + # Any problems reading in the target definition file should be + # treated as an error: I/O is unlikely to behave in the way + # that the user expects. + set msg "An error occurred while reading in the target definition file\n $_config_file\n $_config_file_msg\n" + synth::report_error $msg + exit 1 + } + unset _result _config_file_msg +} + +unset _dirlist _tdf _config_file _candidate + +# }}} + +if { $synth::flag_gui } { +# {{{ Main GUI code + +# {{{ Session file + +# ---------------------------------------------------------------------------- +# The tool manages a file ~/.ecos/synth/guisession, holding information +# such as the size and position of the main window. The aim is to give +# the user a fairly consistent interface between sessions. The information +# is saved during exit handling, and also in response to the window +# manager WM_SAVE_YOURSELF request. However note that the latter does +# not extend to user session information - restarting the eCos application +# the next time a user logs in is inappropriate for eCos, plus if +# the application is being run inside gdb (a likely scenario) it is gdb +# that should handle restarting the application. +# +# Using a single file has limitations. Specifically the user may be +# switching between a number of different target definition files, +# each resulting in a subtly different layout, and arguably there +# should be separate session information for each one. However +# distinguishing between per-target and global settings would be +# very complicated. +# +# The most obvious implementation involves the options database. +# +# FIXME: implement properly + +namespace eval synth { + # Make sure we are using the right options from .Xdefaults etc. + tk appname "ecosynth" + + if { $synth::flag_debug } { + # synth::report "Reading in session file ~/.ecos/synth/guisession\n" + } + + # synth::report_warning "Support for reading session file ~/.ecos/synth/guisession not yet implemented.\n" + + if { [file exists "~/.ecos/synth/guisession"] } { + if {0 != [catch { option readfile "~/.ecos/synth/guisession" userDefault} msg]} { + # synth::report_error "Failed to read GUI session information from file ~/.ecos/synth/guisession\n $msg\n" + } + } + + proc _update_session_file { arg_list } { + # synth::report_warning "Support for updating session file ~/.ecos/synth/guisession not yet implemented.\n" + } + proc _handle_wm_save_yourself { } { + # synth::report_warning "Support for WM_SAVE_YOURSELF not yet implemented\n" + } + + synth::hook_add "exit" synth::_update_session_file +} + +# }}} +# {{{ Load images + +# ---------------------------------------------------------------------------- +# Load various useful bitmaps etc. into memory, so that they can be accessed +# by any code that needs them. +# +# Running1 is a coloured version of the eCos logo. running2 and running3 are +# used by alternative implementations of the heartbeat: running2 has the +# red and black reversed, and running3 is mostly a mirror image of the normal +# logo. +namespace eval synth { + + proc load_image { image_name filename } { + set result 0 + set type [file extension $filename] + if { ! [file exists $filename] } { + synth::report_error "Image $filename has not been installed.\n" + } elseif { ! [file readable $filename] } { + synth::report_error "Image $filename is not readable.\n" + } elseif { (".xbm" == $type) } { + if { 0 == [catch { set $image_name [image create bitmap -file $filename] }] } { + set result 1 + } else { + synth::report_error "Bitmap image $filename is invalid.\n" + } + } else { + if { 0 == [catch { set $image_name [image create photo -file $filename] }] } { + set result 1 + } else { + synth::report_error "Image $filename is invalid.\n" + } + } + return $result + } + + set _images [list "tick_yes.xbm" "tick_no.xbm" "save.xbm" "cut.xbm" "copy.xbm" "paste.xbm" \ + "help.xbm" "running1.ppm" "saveall.xbm" ] + foreach _image $_images { + variable image_[file rootname $_image] + synth::load_image "synth::image_[file rootname $_image]" [file join $synth::install_dir $_image] + } + unset _images _image +} + +# }}} +# {{{ Balloon help + +namespace eval synth { + + variable _balloon_messages + variable _balloon_pending "" + + toplevel .balloon + label .balloon.info -borderwidth 2 -relief groove -background "light yellow" + pack .balloon.info -side left -fill both -expand 1 + wm overrideredirect .balloon 1 + wm withdraw .balloon + + proc register_balloon_help { widget message } { + set synth::_balloon_messages($widget) $message + bind $widget <Enter> { synth::_balloonhelp_pending %W } + bind $widget <Leave> { synth::_balloonhelp_cancel } + } + + proc _balloonhelp_pending { widget } { + synth::_balloonhelp_cancel + set synth::_balloon_pending [after 1200 [list synth::_balloonhelp_show $widget]] + } + + proc _balloonhelp_cancel { } { + if { "" != $synth::_balloon_pending } { + after cancel $synth::_balloon_pending + set synth::_balloon_pending "" + } else { + wm withdraw .balloon + } + } + + proc _balloonhelp_show { widget } { + .balloon.info configure -text $synth::_balloon_messages($widget) + set x [expr [winfo rootx $widget] + 2] + set y [expr [winfo rooty $widget] + [winfo height $widget] + 2] + wm geometry .balloon +$x+$y + wm deiconify .balloon + raise .balloon + set synth::_balloon_pending "" + } +} + +# }}} +# {{{ Window manager settings + +# ---------------------------------------------------------------------------- +# Set up the current program name in the title bar etc. + +namespace eval synth { + + if { $synth::flag_debug } { + synth::report "Performing required interactions with window manager\n" + } + + # The toplevel is withdrawn during startup. It is possible that + # some of the windows and other objects created initially will end + # up being deleted again before the system is fully up and running, + # and the event loop is entered before then to accept requests from + # the eCos application. This could cause confusing changes. The + # toplevel is displayed in response to the constructors-done request. + wm withdraw . + + # For now disable all attempts to use the "send" command. Leaving it + # enabled would introduce security problems. + rename "::send" {} + + variable title "eCos synthetic target" + if { "" != $synth::ecos_appname} { + append synth::title ": $synth::ecos_appname ($synth::_ppid)" + } + wm title . $synth::title + + # Use the specified geometry, or that from the last session. + # Obviously how well this works depends very much on the + # window manager being used. + set _geometry "" + if { "" == $synth::geometry} { + # Command line request to suppress the preferences. Revert + # to a default size. + set _geometry "640x480" + } elseif { "<none>" == $synth::geometry } { + # No command line option, use the value from the preferences file + # FIXME: implement + set _geometry "640x480" + } else { + # There was an explicit -geometry option on the command line. Use it. + set synth::_geometry $synth::geometry + if { [regexp -- {^([0-9]+x[0-9]+).*$} $synth::_geometry] } { + wm sizefrom . "user" + } + if { [regexp -- {^.*([+-][0-9]+[+-][0-9]+)$} $synth::_geometry] } { + wm positionfrom . "user" + } + } + wm geometry . $synth::_geometry + unset synth::_geometry + + set _file [file join $synth::install_dir "ecosicon.xbm"] + if { [file readable $synth::_file] } { + wm iconbitmap . "@$synth::_file" + } + set _file [file join $synth::install_dir "ecosiconmask.xbm"] + if { [file readable $synth::_file] } { + wm iconmask . "@$synth::_file" + } + unset synth::_file + + if { "" != $synth::ecos_appname } { + wm iconname . "ecosynth: $synth::ecos_appname" + } else { + wm iconname . "ecosynth" + } + + wm protocol . "WM_DELETE_WINDOW" synth::_handle_exit_request + wm protocol . "WM_SAVE_YOURSELF" synth::_handle_wm_save_yourself +} + +# }}} +# {{{ Exit and kill handling + +# ---------------------------------------------------------------------------- +# Exit handling. The user may request program termination using various +# different ways: +# 1) File->Exit +# 2) ctrl-Q, the shortcut for the above +# 3) the Window Manager's delete-window request +# +# If eCos has already exited then the request can be handled straightaway. +# The invocation of exit will go via the exit hooks so appropriate +# clean-ups will take place. +# +# If eCos has not already exited then it is assumed that the user wants +# the eCos application to terminate as well as the GUI. This can be achieved +# via the interrupt subsystem. However, there is a risk that the application +# has crashed, or is blocked in gdb, or has interrupts permanently disabled, +# in which case it is not going to respond to the SIGIO. To allow for this +# a number of retries are attempted, and after five seconds of this the +# application is killed off forcibly. + +namespace eval synth { + + variable _handle_exit_retries 0 + variable _handle_exit_after "" + + proc _handle_exit_request { } { + + if { !$synth::ecos_running } { + exit 0 + } + # Setting this flag causes ecosynth to exit immediately once + # the application terminates. + set synth::flag_immediate_exit 1 + + # Now ask the application to exit + synth::request_application_exit + + # Set up a timer to retry this + if { "" == $synth::_handle_exit_after } { + set synth::_handle_exit_after [after 1000 synth::_handle_exit_timer] + + # And output something so the user knows the request has been received + synth::report "Waiting for the eCos application to exit.\n" + } + } + + # This routine requests termination of eCos, but not of + # ecosynth + proc _handle_kill_request { } { + if { $synth::ecos_running } { + synth::request_application_exit + if { "" == $synth::_handle_exit_after } { + set synth::_handle_exit_after [after 1000 synth::_handle_exit_timer] + } + } + } + + proc _handle_exit_timer { } { + if { $synth::ecos_running } { + incr synth::_handle_exit_retries + if { $synth::_handle_exit_retries < 5 } { + synth::request_application_exit + synth::report "Still waiting for the eCos application to exit.\n" + } else { + synth::_send_SIGKILL + } + set synth::_handle_exit_after [after 1000 synth::_handle_exit_timer] + } + } +} + +# }}} +# {{{ Main window layout + +# ---------------------------------------------------------------------------- +# The window layout is as follows: +# 1) a menu bar at the top (surprise surprise). Many of the menus will be +# empty or nearly so, but device-specific scripts may want to extend +# the menus. +# 2) a toolbar. This is primarily for use by device-specific scripts +# 3) a central grid. +# 4) a status line at the bottom. +# +# The central grid is organised as a 3x3 set of frames. The centre frame holds +# the main text display, plus associated scrollbars, and is the frame that +# will expand or shrink as the toplevel is resized. The remaining eight frames +# (nw, n, ne, e, se, s, sw, w) are available for use by device-specific +# scripts, typically under control of settings in the target definition file. +# It is very possible that some or all of these eight frames will be empty, +# and if an entire row or column is empty then Tk will make them invisible. +# +# Possible enhancements: +# 1) implement some sort of paning/resizing around the central text window. +# That would provide some way of letting the user control the space +# taken by device-specific subwindows. This would be implemented +# by modifying the weights assigned to different rows/columns. +# 2) it would be very useful if the main text window could be split, +# like emacs. This would require multiple text widgets, with output +# being pasted in each one. +# 3) possibly the text window should not be hard-wired to the centre frame, +# instead its frame could be selected by preferences somehow. + +if { $synth::flag_debug } { + synth::report "Creating main window layout\n" +} + +# The various frames are generally accessed via variables + +menu .menubar -borderwidth 1 +menu .menubar.file +menu .menubar.edit +menu .menubar.view +menu .menubar.windows +menu .menubar.help + +. configure -menu .menubar +.menubar add cascade -label "File" -underline 0 -menu .menubar.file +.menubar add cascade -label "Edit" -underline 0 -menu .menubar.edit +.menubar add cascade -label "View" -underline 0 -menu .menubar.view +.menubar add cascade -label "Windows" -underline 0 -menu .menubar.windows +.menubar add cascade -label "Help" -underline 0 -menu .menubar.help + +.menubar.file add command -label "Save" -underline 0 -accelerator "Ctrl-S" -command [list synth::_handle_file_save] +.menubar.file add command -label "Save As..." -underline 5 -command [list synth::_handle_file_save_as] +.menubar.file add command -label "Save All..." -underline 6 -command [list synth::_handle_file_save_all] +.menubar.file add command -label "Kill eCos" -underline 0 -command [list synth::_handle_kill_request] +.menubar.file add command -label "Exit" -underline 1 -accelerator "Ctrl-Q" -command [list synth::_handle_exit_request] +bind . <Control-KeyPress-q> [list synth::_handle_exit_request] +bind . <Control-KeyPress-s> [list synth::_handle_file_save] + +# Once eCos has exited, the kill option should be disabled +namespace eval synth { + proc _menubar_ecos_exit_clean { arg_list } { + .menubar.file entryconfigure "Kill eCos" -state disabled + } + synth::hook_add "ecos_exit" synth::_menubar_ecos_exit_clean +} + +frame .toolbar -borderwidth 1 -relief groove +if { "" != $synth::image_save } { + button .toolbar.save -image $synth::image_save -borderwidth 0 -command [list synth::_handle_file_save] + pack .toolbar.save -side left -padx 2 + synth::register_balloon_help .toolbar.save "Save visible output" +} +if { "" != $synth::image_saveall } { + button .toolbar.saveall -image $synth::image_saveall -borderwidth 0 -command [list synth::_handle_file_save_all] + pack .toolbar.saveall -side left -padx 2 + synth::register_balloon_help .toolbar.saveall "Save all output" +} +if { "" != $synth::image_cut } { + button .toolbar.cut -image $synth::image_cut -borderwidth 0 -state disabled -command [list synth::_handle_edit_cut] + pack .toolbar.cut -side left -padx 2 + synth::register_balloon_help .toolbar.cut "Cut" +} +if { "" != $synth::image_copy } { + + button .toolbar.copy -image $synth::image_copy -borderwidth 0 -command [list synth::_handle_edit_copy] + pack .toolbar.copy -side left -padx 2 + synth::register_balloon_help .toolbar.copy "Copy" +} +if { "" != $synth::image_paste } { + button .toolbar.paste -image $synth::image_paste -borderwidth 0 -state disabled -command [list synth::_handle_edit_paste] + pack .toolbar.paste -side left -padx 2 + synth::register_balloon_help .toolbar.paste "Paste" +} +pack .toolbar -side top -fill x + +frame .main +frame .main.nw -borderwidth 0 +frame .main.n -borderwidth 0 +frame .main.ne -borderwidth 0 +frame .main.e -borderwidth 0 +frame .main.se -borderwidth 0 +frame .main.s -borderwidth 0 +frame .main.sw -borderwidth 0 +frame .main.w -borderwidth 0 + +frame .main.centre + +frame .main.border_nw_n -width 2 -background black -borderwidth 0 +frame .main.border_n_ne -width 2 -background black -borderwidth 0 +frame .main.border_w_centre -width 2 -background black -borderwidth 0 +frame .main.border_centre_e -width 2 -background black -borderwidth 0 +frame .main.border_sw_s -width 2 -background black -borderwidth 0 +frame .main.border_s_se -width 2 -background black -borderwidth 0 +frame .main.border_nw_w -height 2 -background black -borderwidth 0 +frame .main.border_n_centre -height 2 -background black -borderwidth 0 +frame .main.border_ne_e -height 2 -background black -borderwidth 0 +frame .main.border_w_sw -height 2 -background black -borderwidth 0 +frame .main.border_centre_s -height 2 -background black -borderwidth 0 +frame .main.border_e_se -height 2 -background black -borderwidth 0 + +text .main.centre.text -xscrollcommand [list .main.centre.horizontal set] -yscrollcommand [list .main.centre.vertical set] +scrollbar .main.centre.horizontal -orient horizontal -command [list .main.centre.text xview] +scrollbar .main.centre.vertical -orient vertical -command [list .main.centre.text yview] +grid configure .main.centre.text -row 0 -column 0 -sticky news +grid configure .main.centre.vertical -row 0 -column 1 -sticky ns +grid configure .main.centre.horizontal -row 1 -column 0 -sticky ew +# Is there anything useful to be done in 1,1? e.g. a >> button to +# go directly to perform ".main.centre.text see end" + +# Make sure that row 0 column 0, i.e. the text widget rather than the +# scrollbars, grows to fit all available space. +grid rowconfigure .main.centre 0 -weight 1 +grid rowconfigure .main.centre 1 -weight 0 +grid columnconfigure .main.centre 0 -weight 1 +grid columnconfigure .main.centre 1 -weight 0 + +grid configure .main.nw -row 0 -column 0 -sticky news +grid configure .main.border_nw_n -row 0 -column 1 -sticky ns +grid configure .main.n -row 0 -column 2 -sticky news +grid configure .main.border_n_ne -row 0 -column 3 -sticky ns +grid configure .main.ne -row 0 -column 4 -sticky news +grid configure .main.border_nw_w -row 1 -column 0 -sticky ew +grid configure .main.border_n_centre -row 1 -column 1 -columnspan 3 -sticky ew +grid configure .main.border_ne_e -row 1 -column 4 -sticky ew +grid configure .main.w -row 2 -column 0 -sticky news +grid configure .main.border_w_centre -row 2 -column 1 -sticky ns +grid configure .main.centre -row 2 -column 2 -sticky news +grid configure .main.border_centre_e -row 2 -column 3 -sticky ns +grid configure .main.e -row 2 -column 4 -sticky news +grid configure .main.border_w_sw -row 3 -column 0 -sticky ew +grid configure .main.border_centre_s -row 3 -column 1 -columnspan 3 -sticky ew +grid configure .main.border_e_se -row 3 -column 4 -sticky ew +grid configure .main.sw -row 4 -column 0 -sticky news +grid configure .main.border_sw_s -row 4 -column 1 -sticky ns +grid configure .main.s -row 4 -column 2 -sticky news +grid configure .main.border_s_se -row 4 -column 3 -sticky ns +grid configure .main.se -row 4 -column 4 -sticky news +grid columnconfigure .main 0 -weight 0 +grid columnconfigure .main 1 -weight 0 +grid columnconfigure .main 2 -weight 1 +grid columnconfigure .main 3 -weight 0 +grid columnconfigure .main 4 -weight 0 +grid rowconfigure .main 0 -weight 0 +grid rowconfigure .main 1 -weight 0 +grid rowconfigure .main 2 -weight 1 +grid rowconfigure .main 3 -weight 0 +grid rowconfigure .main 4 -weight 0 + +# The .main frame should not be packed into the main window yet. +# Until all devices have been instantiated the various subwindows +# are not yet known, so the desired size of .main is not known +# either. Packing it too early and then adding more windows +# causes confusion. + +# }}} +# {{{ Help + +# ---------------------------------------------------------------------------- +# Two main sources of documentation are of interest to the synthetic +# target. The first is the toplevel eCos documentation. The second +# is the documentation specific to the generic target. Device-specific +# scripts may want to add menu entries for their own documentation. +# +# The problems are: +# 1) where to find the documentation +# 2) how to view it? +# +# The documentation should be in the component repository. If there is +# a variable ECOS_REPOSITORY then that gives the appropriate information. +# Otherwise things get messy because the repository being used for +# eCos may not match the repository used when building the host-side +# support - the versions should match but the repository may have +# moved. Never the less that is the best we can do. +# NOTE: sources.redhat.com might provide another alternative, but the +# documentation is not organized in the same way as the repository. +# +# As for how to view the documentation, this is up to user preferences +# but ecosynth has built-in knowledge of three different viewers. + +namespace eval synth { + + if { $synth::flag_debug } { + synth::report "Setting up help menu\n" + } + + variable _browser1 "mozilla -remote openURL(%s)" + variable _browser2 "mozilla %s" + variable _browser3 "gnome-help-browser %s" + variable _main_help "" + variable _synth_help "" + set _repo "" + + if { [info exists env(ECOS_REPOSITORY)] } { + set _repo $env(ECOS_REPOSITORY) + } else { + set _repo $synth::_ecos_repository + } + if { ![file exists [file join $_repo "ecos.db"]] } { + synth::report_warning "Failed to locate eCos component repository.\n \ + Please define an environment variable ECOS_REPOSITORY.\n" + } else { + # FIXME: this needs attention once the documentation is more sorted + set synth::_main_help [file join $_repo "index.html"] + if { ![file exists $synth::_main_help] } { + if { 0 } { + synth::report_warning "Failed to locate toplevel documentation file $synth::_main_help\n \ + Help->eCos menu option disabled.\n" + } + set synth::_main_help "" + } else { + set synth::_main_help "file://$_main_help" + } + + set synth::_synth_help [file join $_repo $synth::_ecosynth_package_dir $synth::_ecosynth_package_version "doc/hal-synth-arch.html"] + if { ![file exists $synth::_synth_help] } { + synth::report_warning "Failed to locate synthetic target documentation $synth::_synth_help\n \ + Help->Synthetic target menu option disabled.\n" + set synth::_synth_help "" + } else { + set synth::_synth_help "file://$_synth_help" + } + } + + if { "" != $_main_help } { + .menubar.help add command -label "eCos" -command [list synth::_menu_help $synth::handle_help] + } else { + .menubar.help add command -label "eCos" -state disabled + } + if { "" != $_synth_help } { + .menubar.help add command -label "Synthetic target" -command [list synth::handle_help "$synth::_synth_help"] + } else { + .menubar.help add command -label "Synthetic target" -state disabled + } + + unset _repo + + proc handle_help { which } { + set command [format $synth::_browser1 $which] + if { 0 != [catch { eval exec -- "$command > /dev/null" } & ] } { + set command [format $synth::_browser2 $which] + if { 0 != [catch { eval exec -- "$command > /dev/null &" } ] } { + set command [format $synth::_browser3 $which] + if { 0 != [catch { eval exec -- "$command > /dev/null &"} ] } { + synth::report_warning "Unable to start a help browser.\n Please check the settings in Edit->Preferences.\n" + } + } + } + } + + # FIXME: add an about box as well. +} + +# }}} +# {{{ Filters + +# ---------------------------------------------------------------------------- +# The central text window is expected to provide the bulk of the information +# to the user. This information can be voluminous, so filtering is desirable. +# +# There are two types of filters. System filters are provided by ecosynth +# itself and by device-specific scripts. For example ecosynth has a filter +# for warnings, and the console device has a filter for eCos trace messages. +# In addition users can specify their own filters using regular expressions, +# and those filters take priority. Note that there is an assumption that +# output is predominantly line-based: if partial lines get output then +# some confusion is possible. +# +# With tk the implementation is relatively straightforward: the text widget's +# tag facility does all the hard work of controlling how text gets displayed. +# It is possible to show or hide text using -elide, colours can be controlled +# using -background and -foreground, ... Not all of this functionality +# is made available to the user just yet. + +namespace eval synth { + # The bulk of the information is held in arrays, indexed by the name of + # the filter. Lists are used to keep track of all valid names. + variable _system_filter_list [list] + variable _system_filter_settings + variable _user_filter_list [list] + variable _user_filter_settings + + # Does a given system filter already exist? + proc filter_exists { name } { + set result 0 + if { -1 != [lsearch -exact $synth::_system_filter_list $name] } { + set result 1 + } + return $result + } + + proc filter_get_list { } { + return $synth::_system_filter_list + } + + # Parsing support. All filters take a number of standard options: + # + # -text "message" - how to identify this filter to the user + # -hide [0|1] - whether or not this text should be hidden by default + # -foreground <colour> + # -background <colour> + # + # The details of the currently supported options are known only to + # filter_parse_options and filter_add, allowing new options such + # as font manipulation to be added in future. + # + # There are two ways of adding a filter. filter_add is typically used + # inside ecosynth.tcl with known good data. filter_add_parsed is + # used with user-provided data, e.g. from the target definition file, + # after a call to filter_validate. + proc filter_parse_options { arg_list result_ref message_ref } { + upvar 1 $result_ref result + upvar 1 $message_ref message + set message "" + + set text_set 0 + set hide_set 0 + set foreground_set 0 + set background_set 0 + + set len [llength $arg_list] + for { set i 0 } { $i < $len } { incr i } { + set arg [lindex $arg_list $i] + if { ( "-text" == $arg) || + ( "-hide" == $arg) || + ( "-foreground" == $arg) || ( "-fg" == $arg) || + ( "-background" == $arg) || ( "-bg" == $arg) } { + + incr i + if { $i >= $len } { + append message " Missing data after argument $arg\n" + } else { + set data [lindex $arg_list $i] + if { "-text" == $arg } { + if { $text_set } { + append message " Attempt to set -text option twice.\n" + } else { + set text_set 1 + set result("-text") $data + } + } elseif { "-hide" == $arg } { + if { $hide_set } { + append message " Attempt to set -hide option twice.\n" + } else { + set hide_set 1 + if { ! [string is boolean -strict $data] } { + append message " -hide should be given a boolean value, not \"$data\"\n" + } else { + set result("-hide") [expr $data ? 1 : 0] + } + } + } elseif { ( "-foreground" == $arg) || ( "-fg" == $arg ) } { + if { $foreground_set } { + append message " Attempt to set -foreground twice.\n" + } else { + set foreground_set 1 + # FIXME: is there some way of validating this color? + set result("-foreground") $data + } + } elseif { ( "-background" == $arg) || ( "-bg" == $arg ) } { + if { $background_set } { + append message " Attempt to set -background twice.\n" + } else { + set background_set 1 + # FIXME: is there some way of validating this color? + set result("-background") $data + } + } + } + } else { + append message " Unknown option \"$arg\".\n" + } + } + + if { "" == $message } { + return 1 + } else { + return 0 + } + } + + # Add a new system filter, after the options have been parsed + proc filter_add_parsed { name data_ref } { + upvar 1 $data_ref data + + set text $name + set hide 0 + set foreground "<default>" + set background "<default>" + if { [info exists data("-text")] } { + set text $data("-text") + } + if { [info exists data("-hide")] } { + set hide $data("-hide") + } + if { [info exists data("-foreground")] } { + set foreground $data("-foreground") + } + if { [info exists data("-background")] } { + set background $data("-background") + } + + if { $hide } { + .main.centre.text tag configure $name -elide 1 + } else { + .main.centre.text tag configure $name -elide 0 + } + if { "<default>" == $foreground } { + .main.centre.text tag configure $name -foreground [.main.centre.text cget -foreground] + } else { + set msg "" + if [catch { .main.centre.text tag configure $name -foreground $foreground } msg ] { + synth::report_warning "Unable to configure color \"$foreground\"\n $msg\n" + set foreground "<default>" + .main.centre.text tag configure $name -foreground [.main.centre.text cget -foreground] + } + } + if { "<default>" == $background } { + .main.centre.text tag configure $name -background [.main.centre.text cget -background] + } else { + set msg "" + if [catch { .main.centre.text tag configure $name -background $background } msg ] { + synth::report_warning "Unable to configure color \"$background\"\n $msg\n" + set background "<default>" + .main.centre.text tag configure $name -background [.main.centre.text cget -background] + } + } + + lappend synth::_system_filter_list $name + set synth::_system_filter_settings($name,text) $text + set synth::_system_filter_settings($name,hide) $hide + set synth::_system_filter_settings($name,foreground) $foreground + set synth::_system_filter_settings($name,background) $background + + # System tags should only get added during initialization. Hence the + # first time the system filters window is brought up all filters + # should be defined. However, just in case a new filter is added + # in the middle of a run... + if { [winfo exists .system_filters] } { + destroy .system_filters + } + } + + # Add a new system filter, performing the appropriate parsing. + proc filter_add { name args } { + + if { [synth::filter_exists $name] } { + synth::internal_error "attempt to install filter $name twice.\n" + } + array set data [list] + set msg "" + + if { ![synth::filter_parse_options $args data msg] } { + # Any dubious arguments to the internal filter_add are treated as fatal. + synth::internal_error "unable to create new filter $name.\n$msg" + } else { + filter_add_parsed $name data + } + } + + filter_add "report" -text "ecosynth messages" + filter_add "error" -text "ecosynth errors" -foreground red + # amber is not a standard colour. Amber leds emit light in the range + # 595-605 nm, corresponding to rgb values of approx. FF4200. + # OrangeRed is close enough at FF4500 + filter_add "warning" -text "ecosynth warnings" -foreground OrangeRed + + # Bring up the system filters window, creating it if necessary. + # Keeping the toplevel around but iconified/withdrawn when + # unwanted means that properties such as size and position will + # tend to be preserved. + variable _system_filter_new_settings + variable _system_filter_widgets + + proc _menu_view_system_filters { } { + if { [winfo exists .system_filters] } { + if { "normal" == [wm state .system_filters] } { + raise .system_filters + } else { + wm deiconify .system_filters + } + return + } + toplevel .system_filters + wm title .system_filters "ecosynth system filters" + wm protocol .system_filters "WM_DELETE_WINDOW" [list synth::_menu_view_system_filters_cancel] + wm group .system_filters . + + frame .system_filters.main + label .system_filters.main.header1 -text "Filter" + label .system_filters.main.header2 -text "Hide" + label .system_filters.main.header3 -text "Foreground" + label .system_filters.main.header4 -text "Background" + set text_fg [.system_filters.main.header1 cget -foreground] + frame .system_filters.main.row0 -height 1 -background $text_fg + frame .system_filters.main.row2 -height 1 -background $text_fg + frame .system_filters.main.col0 -width 1 -background $text_fg + frame .system_filters.main.col2 -width 1 -background $text_fg + frame .system_filters.main.col4 -width 1 -background $text_fg + frame .system_filters.main.col6 -width 1 -background $text_fg + frame .system_filters.main.col8 -width 1 -background $text_fg + grid .system_filters.main.row0 -row 0 -column 0 -columnspan 9 -sticky ew + grid .system_filters.main.header1 -row 1 -column 1 -sticky news + grid .system_filters.main.header2 -row 1 -column 3 -sticky news + grid .system_filters.main.header3 -row 1 -column 5 -sticky news + grid .system_filters.main.header4 -row 1 -column 7 -sticky news + grid .system_filters.main.row2 -row 2 -column 0 -columnspan 9 -sticky ew + + set row 3 + foreach filter $synth::_system_filter_list { + set synth::_system_filter_new_settings($filter,hide) $synth::_system_filter_settings($filter,hide) + set synth::_system_filter_new_settings($filter,foreground) $synth::_system_filter_settings($filter,foreground) + set synth::_system_filter_new_settings($filter,background) $synth::_system_filter_settings($filter,background) + + set synth::_system_filter_widgets($filter,label) \ + [label .system_filters.main.filter_name_$row -text $synth::_system_filter_settings($filter,text)] + set synth::_system_filter_widgets($filter,hide) \ + [checkbutton .system_filters.main.filter_hide_$row -borderwidth 2 -indicatoron false -selectcolor "" \ + -image $synth::image_tick_no -selectimage $synth::image_tick_yes -variable synth::_system_filter_new_settings($filter,hide)] + set synth::_system_filter_widgets($filter,foreground) [button .system_filters.main.filter_foreground_$row -borderwidth 2 \ + -command [list synth::_menu_view_system_filters_choose_foreground $filter]] + set synth::_system_filter_widgets($filter,background) [button .system_filters.main.filter_background_$row -borderwidth 2 \ + -command [list synth::_menu_view_system_filters_choose_background $filter]] + + grid .system_filters.main.filter_name_$row -row $row -column 1 -sticky news + grid .system_filters.main.filter_hide_$row -row $row -column 3 -sticky news + grid .system_filters.main.filter_foreground_$row -row $row -column 5 -sticky news + grid .system_filters.main.filter_background_$row -row $row -column 7 -sticky news + + incr row + frame .system_filters.main.row$row -height 1 -background $text_fg + grid .system_filters.main.row$row -row $row -column 0 -columnspan 9 -sticky ew + incr row + } + grid .system_filters.main.col0 -row 0 -column 0 -rowspan $row -sticky ns + grid .system_filters.main.col2 -row 0 -column 2 -rowspan $row -sticky ns + grid .system_filters.main.col4 -row 0 -column 4 -rowspan $row -sticky ns + grid .system_filters.main.col6 -row 0 -column 6 -rowspan $row -sticky ns + grid .system_filters.main.col8 -row 0 -column 8 -rowspan $row -sticky ns + + for { set i 0 } { $i < $row } { incr i 2 } { + grid rowconfigure .system_filters.main $i -weight 0 + } + for { set i 1 } { $i < $row } { incr i 2 } { + grid rowconfigure .system_filters.main $i -weight 1 + } + for { set i 0 } { $i < 9 } { incr i 2 } { + grid columnconfigure .system_filters.main $i -weight 0 + } + for { set i 1 } { $i < 9 } { incr i 2 } { + grid columnconfigure .system_filters.main $i -weight 1 + } + + pack .system_filters.main -side top -fill both -expand 1 -pady 4 -padx 4 + + # FIXME: add try and revert buttons + frame .system_filters.buttons + button .system_filters.buttons.ok -text "OK" -command [list synth::_menu_view_system_filters_ok] + button .system_filters.buttons.cancel -text "Cancel" -command [list synth::_menu_view_system_filters_cancel] + pack .system_filters.buttons.ok .system_filters.buttons.cancel -side left -expand 1 + pack .system_filters.buttons -side bottom -fill x -pady 4 + + frame .system_filters.separator -height 2 -borderwidth 1 -relief sunken + pack .system_filters.separator -side bottom -fill x -pady 4 + + bind .system_filters <KeyPress-Return> [list synth::_menu_view_system_filters_ok] + bind .system_filters <KeyPress-Escape> [list synth::_menu_view_system_filters_cancel] + + synth::_menu_view_system_filters_reset + } + + proc _menu_view_system_filters_reset { } { + foreach filter $synth::_system_filter_list { + set synth::_system_filter_new_settings($filter,hide) $synth::_system_filter_settings($filter,hide) + set synth::_system_filter_new_settings($filter,foreground) $synth::_system_filter_settings($filter,foreground) + set synth::_system_filter_new_settings($filter,background) $synth::_system_filter_settings($filter,background) + + set colour $synth::_system_filter_new_settings($filter,foreground) + if { "<default>" == $colour } { + set colour [.system_filters.main.header1 cget -foreground] + } + $synth::_system_filter_widgets($filter,label) configure -foreground $colour + $synth::_system_filter_widgets($filter,foreground) configure -background $colour -activebackground $colour + + set colour $synth::_system_filter_new_settings($filter,background) + if { "<default>" == $colour } { + set colour [.system_filters.main.header1 cget -background] + } + $synth::_system_filter_widgets($filter,label) configure -background $colour + $synth::_system_filter_widgets($filter,background) configure -background $colour -activebackground $colour + } + } + + # Change a colour. For now this involves calling Tk's chooseColor utility. + # This is simple but not quite right: it would be much better to allow + # the foreground and background to be modified in the same dialog, providing + # immediate feedback on how the text will actually appear; it should also + # provide some simple way of reverting to the default. + proc _menu_view_system_filters_choose_foreground { filter } { + set current_colour $synth::_system_filter_new_settings($filter,foreground) + if { "<default>" == $current_colour } { + set current_colour [.system_filters.main.header1 cget -foreground] + } + set new_colour [tk_chooseColor -parent .system_filters -title "$synth::_system_filter_settings($filter,text) foreground" \ + -initialcolor $current_colour] + if { "" != $new_colour } { + set synth::_system_filter_new_settings($filter,foreground) $new_colour + $synth::_system_filter_widgets($filter,label) configure -foreground $new_colour + $synth::_system_filter_widgets($filter,foreground) configure -background $new_colour -activebackground $new_colour + } + } + + proc _menu_view_system_filters_choose_background { filter } { + set current_colour $synth::_system_filter_new_settings($filter,background) + if { "<default>" == $current_colour } { + set current_colour [.system_filters.main.header1 cget -background] + } + set new_colour [tk_chooseColor -parent .system_filters -title "$synth::_system_filter_settings($filter,text) background" \ + -initialcolor $current_colour] + if { "" != $new_colour } { + set synth::_system_filter_new_settings($filter,background) $new_colour + $synth::_system_filter_widgets($filter,label) configure -background $new_colour + $synth::_system_filter_widgets($filter,background) configure -background $new_colour -activebackground $new_colour + } + } + + proc _menu_view_system_filters_ok { } { + wm withdraw .system_filters + foreach filter $synth::_system_filter_list { + if { $synth::_system_filter_settings($filter,hide) != $synth::_system_filter_new_settings($filter,hide) } { + set hide $synth::_system_filter_new_settings($filter,hide) + set synth::_system_filter_settings($filter,hide) $hide + if { $hide } { + .main.centre.text tag configure $filter -elide 1 + } else { + .main.centre.text tag configure $filter -elide 0 + } + } + if { $synth::_system_filter_settings($filter,foreground) != $synth::_system_filter_new_settings($filter,foreground) } { + set foreground $synth::_system_filter_new_settings($filter,foreground) + set synth::_system_filter_settings($filter,foreground) $foreground + .main.centre.text tag configure $filter -foreground $foreground + } + if { $synth::_system_filter_settings($filter,background) != $synth::_system_filter_new_settings($filter,background) } { + set background $synth::_system_filter_new_settings($filter,background) + set synth::_system_filter_settings($filter,background) $background + .main.centre.text tag configure $filter -background $background + } + } + } + + proc _menu_view_system_filters_cancel { } { + wm withdraw .system_filters + synth::_menu_view_system_filters_reset + } + + # Now add a suitable entry to the View menu. + .menubar.view add command -label "System filters..." -command [list synth::_menu_view_system_filters] + + # User filters. + # FIXME: implement + # .menubar.view add command -label "User filters..." -command [list synth::_menu_view_filters] -state disabled +} + +# }}} +# {{{ Text window + +# ---------------------------------------------------------------------------- +# The central text window is expected to provide the bulk of the information +# to the user. Various filtering mechanisms are desirable. For example the +# user should be able to control whether or not eCos trace messages are +# currently visible, not to mention other characteristics such as font +# and colours. The text widget's tag mechanism makes this relatively simple. + +namespace eval synth { + + # Should the user be able to edit the text window, e.g. to add annotations? + # This is disabled by default but can be enabled. + variable flag_read_only 1 + + # By default disable wrapping. Possibly it should be possible to + # enable this on a per-tag basis. + .main.centre.text configure -wrap "none" + + # Give the text widget the focus by default. That way operations + # like page-up work immediately. + focus .main.centre.text + + # If editing is currently disallowed, do not accept any input. + # The code below is probably not quite sufficient, it is + # ASCII-centric. A separate binding for Alt- sequences ensures + # that the top-level menu processing continues to work. + # Similarly a separate binding for Control- sequences ensures + # that the shortcuts continue to work. + bind .main.centre.text <Alt-KeyPress> { + continue + } + bind .main.centre.text <Control-KeyPress> { + continue + } + bind .main.centre.text <KeyPress> { + if { !$synth::flag_read_only } { + continue + } elseif { 0 != [llength %A] } { + break + } elseif { ("Return" == "%K") || ("Tab" == "%K") || ("space" == "%K") } { + break + } else { + continue + } + } + # There are a few special control- bindings built in to the Tk text + # widget which perform editing operations + bind .main.centre.text <Control-KeyPress-h> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <Control-KeyPress-d> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <Control-KeyPress-k> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <Control-KeyPress-o> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <Control-KeyPress-t> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + + # Implement support for the normal edit menu operations. + # FIXME: add a search facility + .menubar.edit insert end command -label "Cut" -command [list synth::_handle_edit_cut] -underline 2 -accelerator "Ctrl-X" -state disabled + .menubar.edit insert end command -label "Copy" -command [list synth::_handle_edit_copy] -underline 0 -accelerator "Ctrl-C" + .menubar.edit insert end command -label "Paste" -command [list synth::_handle_edit_paste] -underline 0 -accelerator "Ctrl-V" -state disabled + .menubar.edit insert end command -label "Clear" -command [list synth::_handle_edit_clear] -underline 3 -accelerator "Del" -state disabled + .menubar.edit insert end command -label "Select All" -command [list synth::_handle_edit_select_all] -underline 9 -accelerator "Ctrl-A" + .menubar.edit insert end checkbutton -label "Read Only" -variable synth::flag_read_only + .menubar.edit insert end separator + proc _trace_read_only { name1 name2 op } { + if { !$synth::flag_read_only } { + .menubar.edit entryconfigure "Cut" -state normal + .menubar.edit entryconfigure "Paste" -state normal + .menubar.edit entryconfigure "Clear" -state normal + .toolbar.cut configure -state normal + .toolbar.paste configure -state normal + } else { + .menubar.edit entryconfigure "Cut" -state disabled + .menubar.edit entryconfigure "Paste" -state disabled + .menubar.edit entryconfigure "Clear" -state disabled + .toolbar.cut configure -state disabled + .toolbar.paste configure -state disabled + } + } + trace variable synth::flag_read_only "w" synth::_trace_read_only + + # Support for cut'n'paste etc. The widget does most of the hard + # work, but this code has to distinguish between read-only and + # read-write windows. + # + # Some operations such as clear may operate on everything in the + # selection, including hidden text that happens to be in the + # range. That may or may not be the right thing to do. It is right + # if the intent is to get rid of all events during a period of + # time, but wrong if the user wants to get rid of specific text. + bind . <Control-KeyPress-x> [list synth::_handle_edit_cut] + bind . <Control-KeyPress-c> [list synth::_handle_edit_copy] + bind . <Control-KeyPress-v> [list synth::_handle_edit_paste] + bind . <KeyPress-Delete> [list synth::_handle_edit_clear] + bind . <Control-KeyPress-a> [list synth::_handle_edit_select_all] + + bind .main.centre.text <<Paste>> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <<Cut>> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + bind .main.centre.text <<Clear>> { + if { !$synth::flag_read_only } { + continue + } else { + break + } + } + + proc _handle_edit_cut { } { + event generate .main.centre.text "<<Cut>>" + } + + proc _handle_edit_copy { } { + event generate .main.centre.text "<<Copy>>" + } + + proc _handle_edit_paste { } { + event generate .main.centre.text "<<Paste>>" + } + + proc _handle_edit_clear { } { + event generate .main.centre.text "<<Clear>>" + } + + proc _handle_edit_select_all { } { + .main.centre.text tag add sel 1.0 "end - 1 chars" + } + + # Most output to the text window goes through this routine. It inserts + # some text with an appropriate tag. In addition it will ensure that + # the new text is visible if appropriate, and if a logfile has been + # specified then that will be updated as well. + proc output { msg tag } { + set ytail [lindex [.main.centre.text yview] 1] + set xhead [lindex [.main.centre.text xview] 0] + .main.centre.text insert end $msg $tag + if { (1.0 == $ytail) && (0.0 == $xhead) } { + .main.centre.text see end + } + if { "" != $synth::_logfd } { + puts -nonewline $synth::_logfd $msg + } + } + + # Text output is now possible, so flush anything that is still buffered. + # xview and yview may not give the right results until the window + # is mapped, so always make the last text visible. + set synth::flag_gui_ready 1 + synth::_flush_output + .main.centre.text see end + + + # Support for saving the current document. Save applies only to + # the currently visible text. SaveAll gives the hidden text as + # well. + variable _savefile "" + proc _handle_file_save { } { + if { "" == $synth::_savefile } { + set synth::_savefile [tk_getSaveFile -parent .] + if { "" == $synth::_savefile } { + return + } + } + set msg "" + if { 0 != [catch { set fd [open $synth::_savefile "w"] } msg] } { + synth::report_error "$msg\n" + if { $synth::_system_filter_settings(error,hide) } { + tk_messageBox -type "ok" -icon "error" -parent . -message "$msg\n" + } + return + } + set number_lines [expr int([.main.centre.text index end])] + for { set i 1 } { $i < $number_lines } { incr i } { + set tags [.main.centre.text tag names "[set i].0"] + if {[llength $tags] > 0 } { + set tag [lindex $tags 0] + if { [info exists synth::_system_filter_settings($tag,hide)] && + $synth::_system_filter_settings($tag,hide) } { + continue + } + } + puts $fd [.main.centre.text get "[set i].0" "[set i].end"] + } + close $fd + } + + proc _handle_file_save_as { } { + set new_savefile [tk_getSaveFile -parent .] + if { "" == $new_savefile } { + return + } + set synth::_savefile $new_savefile + synth::_handle_file_save + } + + proc _handle_file_save_all { } { + set new_savefile [tk_getSaveFile -parent .] + if { "" == $new_savefile } { + return + } + set msg "" + if { 0 != [catch { set fd [open $new_savefile "w"] } msg] } { + synth::report_error "$msg\n" + if { $synth::_system_filter_settings(error,hide) } { + tk_messageBox -type "ok" -icon "error" -parent . -message "$msg\n" + } + return + } + puts -nonewline $fd [.main.centre.text get 1.0 end] + close $fd + } +} + +# }}} +# {{{ Heartbeat and status + +# ---------------------------------------------------------------------------- +# This code manages a status line at the bottom of the main window. +# This involves a little heartbeat window, a label with the +# text Running or Exited, some padding, and an additional status +# line for use by other code. +# +# A variety of heartbeats have been attempted. The current one is +# still not very good, but will do for now. Others are if 0'd out. +# Note that these others may require additional images to be +# preloaded. + +namespace eval synth { + frame .status -borderwidth 1 -relief groove + + if { 1 } { + # The eCos logo, bouncing horizontally + variable _heartbeat_image_width [image width $synth::image_running1] + variable _heartbeat_offset 0 + variable _heartbeat_ltor 1 + + frame .status.heartbeat -width $synth::_heartbeat_image_width -height [image height $synth::image_running1] + pack .status.heartbeat -side left + label .status.heartbeat.image -image $synth::image_running1 -anchor w -borderwidth 0 + place .status.heartbeat.image -x $synth::_heartbeat_offset -y 0 + + proc _heartbeat_update { } { + if { ! $synth::ecos_running } { + place configure .status.heartbeat.image -x 0 -y 0 + } else { + if { $synth::_heartbeat_ltor } { + incr synth::_heartbeat_offset 4 + } else { + incr synth::_heartbeat_offset -4 + } + place configure .status.heartbeat.image -x $synth::_heartbeat_offset + + if { $synth::_heartbeat_offset < (5 - $synth::_heartbeat_image_width) } { + set synth::_heartbeat_ltor 1 + } elseif { $synth::_heartbeat_offset > ( $synth::_heartbeat_image_width -5) } { + set synth::_heartbeat_ltor 0 + } + after 100 synth::_heartbeat_update + } + } + after 100 synth::_heartbeat_update + + } elseif { 0 } { + # The eCos logo, alternating between a normal and an inverse version + variable _heartbeat_image_width [image width $synth::image_running1] + variable _heartbeat_inverse "" + variable _heartbeat_normal "" + variable _heartbeat_inverse_width 1 + variable _heartbeat_normal_width 1 + + canvas .status.heartbeat_canvas -width [image width $synth::image_running1] -height [image height $synth::image_running1] + pack .status.heartbeat_canvas -side left + label .status.heartbeat_canvas.background -image $synth::image_running1 -anchor w -borderwidth 0 + label .status.heartbeat_canvas.inverse -image $synth::image_running2 -anchor w -borderwidth 0 + label .status.heartbeat_canvas.normal -image $synth::image_running1 -anchor w -borderwidth 0 + .status.heartbeat_canvas create window 0 0 -anchor nw -window .status.heartbeat_canvas.background + set synth::_heartbeat_inverse [.status.heartbeat_canvas create window 0 0 -anchor nw -window .status.heartbeat_canvas.inverse] + raise .status.heartbeat_canvas.inverse .status.heartbeat_canvas.background + set synth::_heartbeat_normal [.status.heartbeat_canvas create window 0 0 -anchor nw -window .status.heartbeat_canvas.normal] + raise .status.heartbeat_canvas.normal .status.heartbeat_canvas.inverse + + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_inverse -width $synth::_heartbeat_inverse_width + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_normal -width $synth::_heartbeat_normal_width + + proc _heartbeat_update { } { + if { ! $synth::ecos_running } { + .status.heartbeat_canvas delete $synth::_heartbeat_inverse + .status.heartbeat_canvas delete $synth::_heartbeat_normal + } else { + if { $synth::_heartbeat_inverse_width < $synth::_heartbeat_image_width } { + incr synth::_heartbeat_inverse_width 2 + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_inverse -width $synth::_heartbeat_inverse_width + } elseif { $synth::_heartbeat_normal_width < $synth::_heartbeat_image_width } { + incr synth::_heartbeat_normal_width 2 + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_normal -width $synth::_heartbeat_normal_width + } else { + set synth::_heartbeat_inverse_width 1 + set synth::_heartbeat_normal_width 1 + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_inverse -width $synth::_heartbeat_inverse_width + .status.heartbeat_canvas itemconfigure $synth::_heartbeat_normal -width $synth::_heartbeat_normal_width + } + after 100 synth::_heartbeat_update + } + } + after 100 synth::_heartbeat_update + + } elseif { 0 } { + # The eCos logo moving left to right, then replaced by a slightly smaller + # mirror version moving right to left, sort of as if rotating around a torus + variable _heartbeat_image_width [image width $synth::image_running1] + variable _heartbeat_offset [expr -1 * [image width $synth::image_running1]] + variable _heartbeat_ltor 1 + + frame .status.heartbeat -width $synth::_heartbeat_image_width -height [image height $synth::image_running1] + pack .status.heartbeat -side left + label .status.heartbeat.label -image $synth::image_running1 -anchor w -borderwidth 0 + + place .status.heartbeat.label -x $synth::_heartbeat_offset -y 0 + + proc _heartbeat_update { } { + if { ! $synth::ecos_running } { + .status.heartbeat.label configure -image $synth::image_running1 + place configure .status.heartbeat.label -x 0 + } else { + if { $synth::_heartbeat_ltor } { + incr synth::_heartbeat_offset 4 + } else { + incr synth::_heartbeat_offset -4 + } + place configure .status.heartbeat.label -x $synth::_heartbeat_offset + if { $synth::_heartbeat_offset < (0 - $synth::_heartbeat_image_width) } { + .status.heartbeat.label configure -image $synth::image_running1 + set synth::_heartbeat_ltor 1 + } elseif { $synth::_heartbeat_offset > $synth::_heartbeat_image_width } { + .status.heartbeat.label configure -image $synth::image_running3 + set synth::_heartbeat_ltor 0 + } + after 100 synth::_heartbeat_update + } + } + after 100 synth::_heartbeat_update + } + + label .status.running -width 10 -text "Running" -anchor w + pack .status.running -side left + proc _heartbeat_exit_hook { arg_list } { + .status.running configure -text "Exited" + } + synth::hook_add "ecos_exit" synth::_heartbeat_exit_hook + + label .status.text -text "" -anchor w + pack .status.text -side left -fill x -expand 1 + pack .status -side bottom -fill x +} + +# }}} +# {{{ Preferences + +namespace eval synth { + + if { $synth::flag_debug } { + synth::report "Setting up preferences window.\n" + } + + variable _pref_browser1 "" + variable _pref_browser2 "" + variable _pref_browser3 "" + + toplevel .preferences + wm title .preferences "ecosynth preferences" + wm withdraw .preferences + wm protocol .preferences "WM_DELETE_WINDOW" [list synth::_menu_edit_preferences_cancel] + wm group .preferences . + + # NOTE: the fixed-size padx/pady arguments should probably be determined + # using a font calculation. The fixed width for the column 0 entries is also + # a cheat. + set _pref_col0_width 24 + + frame .preferences.help + frame .preferences.help.frame -borderwidth 2 -relief groove + pack .preferences.help.frame -fill both -expand 1 -pady 10 + frame .preferences.help.frame.blank -height 10 + label .preferences.help.frame.label1 -text "Preferred browser" -width $synth::_pref_col0_width -anchor w + label .preferences.help.frame.label2 -text "First alternative" -width $synth::_pref_col0_width -anchor w + label .preferences.help.frame.label3 -text "Second alternative" -width $synth::_pref_col0_width -anchor w + entry .preferences.help.frame.entry1 -width 40 -relief sunken -textvariable synth::_pref_browser1 + entry .preferences.help.frame.entry2 -width 40 -relief sunken -textvariable synth::_pref_browser2 + entry .preferences.help.frame.entry3 -width 40 -relief sunken -textvariable synth::_pref_browser3 + grid .preferences.help.frame.blank -row 0 -column 0 + grid .preferences.help.frame.label1 -row 1 -column 0 -sticky w + grid .preferences.help.frame.label2 -row 2 -column 0 -sticky w + grid .preferences.help.frame.label3 -row 3 -column 0 -sticky w + grid .preferences.help.frame.entry1 -row 1 -column 1 -sticky ew + grid .preferences.help.frame.entry2 -row 2 -column 1 -sticky ew + grid .preferences.help.frame.entry3 -row 3 -column 1 -sticky ew + grid columnconfigure .preferences.help.frame 0 -weight 0 + grid columnconfigure .preferences.help.frame 1 -weight 1 + + label .preferences.help.title -text "Help" + place .preferences.help.title -in .preferences.help.frame -relx .1 -x -5 -y -10 -bordermode outside + pack .preferences.help -fill both -expand 1 -padx 10 + + frame .preferences.buttons + button .preferences.buttons.ok -text "OK" -command [list synth::_menu_edit_preferences_ok] + button .preferences.buttons.cancel -text "Cancel" -command [list synth::_menu_edit_preferences_cancel] + pack .preferences.buttons.ok .preferences.buttons.cancel -side left -expand 1 + pack .preferences.buttons -side bottom -fill x -pady 4 + + frame .preferences.separator -height 2 -borderwidth 1 -relief sunken + pack .preferences.separator -side bottom -fill x -pady 4 + + bind .preferences <KeyPress-Return> [list synth::_menu_edit_preferences_ok] + bind .preferences <KeyPress-Escape> [list synth::_menu_edit_preferences_cancel] + + variable _saved_focus "" + proc _menu_edit_preferences { } { + set synth::_saved_focus [focus] + set synth::_pref_browser1 $synth::_browser1 + set synth::_pref_browser2 $synth::_browser2 + set synth::_pref_browser3 $synth::_browser3 + if { "normal" == [wm state .preferences] } { + raise .preferences + } else { + wm deiconify .preferences + } + focus .preferences.help.frame.entry1 + } + + proc _menu_edit_preferences_ok { } { + if { $synth::_browser1 != $synth::_pref_browser1 } { + set synth::_browser1 $synth::_pref_browser1 + } + if { $synth::_browser2 != $synth::_pref_browser2 } { + set synth::_browser2 $synth::_pref_browser2 + } + if { $synth::_browser3 != $synth::_pref_browser3 } { + set synth::_browser3 $synth::_pref_browser3 + } + + wm withdraw .preferences + catch { focus $synth::_saved_focus } + } + + proc _menu_edit_preferences_cancel { } { + wm withdraw .preferences + catch { focus $synth::_saved_focus } + } + + .menubar.edit add command -label "Preferences..." -command [list synth::_menu_edit_preferences] +} + +# }}} +# {{{ Clean-up + +# ---------------------------------------------------------------------------- +# GUI clean-up. +# +# Once all the device-specific scripts have been loaded and initialized, it +# is time to go through the various components of the GUI and clean up +# anything that is not actually required. +namespace eval synth { + + proc _cleanup_gui { } { + + if { $synth::flag_debug } { + synth::report "Cleaning up unused GUI items.\n" + } + + # File, Edit, View and Help should always have contents, unless + # the user has deleted entries via the mainrc file. The Windows + # menu will be empty unless contents have been added. There is + # always a global binding for ctrl-Q, and the window manager + # should always provide a way of killing off the application, + # so there is no need to treat File specially. + if { 0 == [.menubar.file index end] } { + .menubar delete "File" + } + if { 0 == [.menubar.edit index end] } { + .menubar delete "Edit" + } + if { 0 == [.menubar.view index end] } { + .menubar delete "View" + } + if { 0 == [.menubar.windows index end] } { + .menubar delete "Windows" + } + if { 0 == [.menubar.help index end] } { + .menubar delete "Help" + } + + # If the toolbar is empty get rid of it. + if { 0 == [llength [winfo children .toolbar]] } { + pack forget .toolbar + destroy .toolbar + } + + set can_destroy [list] + # Remove some or all of the top, left hand, right hand or bottom + # sets of frames, if nobody is using them. + if { (0 == [llength [pack slaves .main.nw]]) && + (0 == [llength [pack slaves .main.n]]) && + (0 == [llength [pack slaves .main.ne]]) } { + lappend can_destroy .main.nw .main.border_nw_n .main.n .main.border_n_ne .main.ne + lappend can_destroy .main.border_nw_w .main.border_n_centre .main.border_ne_e + } + if { (0 == [llength [pack slaves .main.nw]]) && + (0 == [llength [pack slaves .main.w]]) && + (0 == [llength [pack slaves .main.sw]]) } { + lappend can_destroy .main.nw .main.border_nw_w .main.w .main.border_w_sw .main.sw + lappend can_destroy .main.border_nw_n .main.border_w_centre .main.border_w_sw + } + if { (0 == [llength [pack slaves .main.ne]]) && + (0 == [llength [pack slaves .main.e]]) && + (0 == [llength [pack slaves .main.se]]) } { + lappend can_destroy .main.ne .main.border_ne_e .main.e .main.border_e_se .main.se + lappend can_destroy .main.border_n_ne .main.border_centre_e .main.border_s_se + } + if { (0 == [llength [pack slaves .main.sw]]) && + (0 == [llength [pack slaves .main.s]]) && + (0 == [llength [pack slaves .main.se]]) } { + lappend can_destroy .main.sw .main.border_sw_s .main.s .main.border_s_se .main.se + lappend can_destroy .main.border_w_sw .main.border_centre_s .main.border_e_se + } + + foreach frame [lsort -unique $can_destroy] { + grid forget $frame + } + foreach frame [lsort -unique $can_destroy] { + destroy $frame + } + + # Now that the full window layout is known the .main frame can be + # packed. Doing this before now could cause problems because the + # desired sizes of the subwindows are not known. + pack .main -expand 1 -fill both + } +} + +# }}} +# {{{ Screen dump support + +# Create screen dumps for the main window or for various subwindows. +# Normally disabled, but useful when generating documentation. +# FIXME: there seem to be problems getting the desired info about +# transient windows, e.g. sizes. Hence the generated dumps still +# require a lot of hand editing for now. +if { 0 } { + + bind . <Alt-w> { + exec xwd -out main.xwd -frame -id [winfo id .] + } + + bind . <Alt-f> { + .menubar invoke "File" + after 100 exec xwd -out menu_file.xwd -frame -id [winfo id .] + } + + bind . <Alt-e> { + .menubar invoke "Edit" + after 100 exec xwd -out menu_edit.xwd -frame -id [winfo id .] + } + + bind . <Alt-v> { + .menubar invoke "View" + after 100 exec xwd -out menu_view.xwd -frame -id [winfo id .] + } + + # The Help menu will extend beyond the window boundaries + bind . <Alt-h> { + .menubar invoke "Help" + after 100 exec xwd -out menu_help.xwd -root + } +} + +# }}} + +# }}} +} + +# {{{ Device instantiation + +# ---------------------------------------------------------------------------- +# This code handles the loading of device-specific scripts in response +# to requests from the eCos application, and the instantiation of devices. +# The application's request provides four pieces of information, held in +# null-terminated strings in the request buffer: +# +# package name e.g. hal/synth/arch +# package version e.g. current +# device type e.g. console or ethernet +# device instance e.g. eth0, or an empty string +# device data e.g. 1024x768 for frame buffer resolution +# +# The first two pieces of information can be concatenated to give a +# path to the install location. The third identifies a suitable +# tcl script, e.g. console.tcl. This is sufficient to locate and load +# the tcl script. It should return an instantiation procedure which will +# be invoked with the instance name (or an empty string if there will only +# ever be one instance of this device type). The instantiation procedure +# will then be called with a number and the device instance string, and +# should return a handler for all requests intended for that device. +# +# If the package name and version are empty strings then an application-specific +# device is being initialized, and the code will search in the current +# directory and in ~/.ecos/synth + +namespace eval synth { + # Map package/version/type on to an instantiation procedure + array set _instantiation_procs [list] + + # Map device instances on to handlers. + array set _device_handlers [list] + array set _device_names [list] + variable _next_device_id 1 + + # Let scripts know their install location and their source dir + variable device_install_dir "" + variable device_src_dir "" + + # One handler is predefined. + set synth::_device_handlers(0) synth::_handle_ecosynth_requests + set synth::_device_names(0) "ecosynth I/O auxiliary" + + proc _handle_INSTANTIATE { data } { + + set list [split $data \0] + if { [llength $list] < 5 } { + synth::send_reply -1 0 "" + return + } + set package_dir [lindex $list 0] + set package_version [lindex $list 1] + set device_type [lindex $list 2] + set device_instance [lindex $list 3] + set device_data [lindex $list 4] + + if { ![info exists synth::_instantiation_procs($package_dir,$package_version,$device_type)] } { + # The required script has not yet been loaded. + if { "" != $package_dir } { + # The device is provided by a package + set synth::device_install_dir [file join $synth::_ecosynth_libexecdir "ecos" $package_dir $package_version] + set synth::device_src_dir [file join $synth::_ecosynth_repository $package_dir $package_version] + + set script [file join $::synth::device_install_dir "[set device_type].tcl"] + if { ![file exists $script] } { + synth::report_error "Unable to initialize device $device_type\n Script \"$script\" not found.\n" + synth::send_reply -1 0 "" + return + } elseif { ![file readable $script] } { + synth::report_error "Unable to initialize device $device_type\n Script \"$script\" not readable.\n" + synth::send_reply -1 0 "" + return + } + + # Is there a more recent version in the repository + if { [info exists ::env(ECOSYNTH_DEVEL)] } { + set _orig_name [file join $synth::device_src_dir "host" "[set device_type].tcl"] + if { [file exists $_orig_name] && [file readable $_orig_name] } { + if { [file mtime $_orig_name] >= [file mtime $script] } { + puts "$_orig_name is more recent than install: executing that." + set script $_orig_name + } + } + } + } else { + # The device is application-specific + set script [file join [pwd] "[set device_type].tcl"] + if { ![file exists $script] || ![file readable $script] } { + set script [file join "~/.ecos/synth" "[set device_type].tcl"] + if { ![file exists $script] || ![file readable $script] } { + synth::report_error "Unable to initialize device $device_type\n Script $device_type.tcl not found in [pwd] or ~/.ecos/synth\n" + synth::send_reply -1 0 "" + return + } + } + } + + # The uplevel ensures that the device script operates at the global + # level, so any namespaces it creates are also at global level + # and not nested inside synth. This avoids having to add + # synth:: to lots of variable accesses and generally avoids confusion + set result [catch { uplevel #0 source $script } instantiator] + if { 0 != $result } { + synth::report_error "Unable to initialize device $device_type\n Error loading script \"$script\"\n $instantiator\n" + synth::send_reply -1 0 "" + return + } + + set synth::_instantiation_procs($package_dir,$package_version,$device_type) $instantiator + } + + set handler [$synth::_instantiation_procs($package_dir,$package_version,$device_type) \ + $synth::_next_device_id $device_instance $device_data] + if { "" == $handler } { + synth::send_reply -1 0 "" + } else { + set result $synth::_next_device_id + incr synth::_next_device_id + + set synth::_device_handlers($result) $handler + if { "" != $device_instance } { + set synth::_device_names($result) $device_instance + } else { + set synth::_device_names($result) $device_type + } + synth::send_reply $result 0 "" + } + } +} + +# }}} +# {{{ Interrupt handling + +# ---------------------------------------------------------------------------- +# Interrupt handling. Device handlers can request an interrupt number +# using allocate_interrupt, and typically they will transmit this +# number to the eCos device driver during initialization. Device handlers +# can at any time call raise_interrupt with that number, which typically +# will result in SIGIO being sent to the eCos application. The latter will +# send a request to retrieve a mask of current pending interrupts. +# +# Exit handling, in the sense of the user selecting File->Exit, is also +# handled here. Such an exit request also involves raising SIGIO and +# then sending a specially format response to the get-pending request. + +namespace eval synth { + + # The next interrupt number to be allocated. Interrupt source 0 is reserved + # for the timer, which is handled within eCos itself via SIGALRM + # rather than by the I/O auxiliary. + variable _interrupt_next 1 + + # Keep track of which interrupts belong to which devices, for display and + # diagnostic purposes. + array set _interrupt_names [list] + set _interrupt_names(0) "system clock" + + # A mask of current pending interrupts + variable _interrupt_pending 0 + + # Is an exit request pending? + variable _interrupt_exit_pending 0 + + # Allow other code to hook into the interrupt system, e.g. to display + # pending interrupts. + synth::hook_define "interrupt" + + # For now interrupts are always allocated dynamically, which effectively + # means in the order of C++ static constructors. This means that interrupt + # allocation depends on the application, and may even change as the application + # is relinked. + # + # An alternative approach would allow device scripts to request specific + # interrupt numbers, making the system a bit more deterministic, but + # introducing complications such as shared interrupt numbers. On the other + # hand that would make it easier to test chained interrupt support and + # the like. + # FIXME: add support for allocating specific interrupt numbers + proc interrupt_allocate { name } { + if { $synth::_interrupt_next == 32 } { + synth::report_error "Unable to allocate an interrupt vector for $name\nAll 32 interrupt vectors are already in use.\n" + return -1 + } + set result $synth::_interrupt_next + set synth::_interrupt_names($result) $name + incr synth::_interrupt_next + return $result + } + + # Allow information about the device->interrupt mappings to be retrieved + proc interrupt_get_max { } { + return [expr $synth::_interrupt_next - 1] + } + proc interrupt_get_devicename { number } { + if { [info exists synth::_interrupt_names($number) ] } { + return $synth::_interrupt_names($number) + } else { + return "" + } + } + + # Raise a specific interrupt. If the interrupt is already pending + # this has no effect because a SIGIO will have been sent to the + # eCos application already. Otherwise SIGIO needs to be raised. + proc interrupt_raise { number } { + if { $number >= $synth::_interrupt_next } { + error "Attempt to raise invalid interrupt $number." + } + if { !$synth::ecos_running } { + return + } + set or_mask [expr 0x01 << $number] + if { 0 == ($or_mask & $synth::_interrupt_pending) } { + # This interrupt was not previously pending, so action is needed. + set synth::_interrupt_pending [expr $synth::_interrupt_pending | $or_mask] + synth::hook_call "interrupt" $number + synth::_send_SIGIO + } + } + + # Request application exit. This is typically called in response to + # File->Exit. + proc request_application_exit { } { + set synth::_interrupt_exit_pending 1 + synth::_send_SIGIO + } + + # The eCos application wants to know about pending interrupts. It maintains + # its own set of pending interrupts, so once the information has been + # transferred there are no pending interrupts left in the I/O auxiliary, + # only in the eCos app. A pending exit is indicated by non-empty data, + # the actual data does not matter. + proc _handle_GET_IRQ_PENDING { } { + if { $synth::_interrupt_exit_pending } { + synth::send_reply $synth::_interrupt_pending 1 "x" + } else { + synth::send_reply $synth::_interrupt_pending 0 "" + } + set synth::_interrupt_pending 0 + } +} + +# }}} +# {{{ Initialization complete + +# ---------------------------------------------------------------------------- +# This is called once all static constructors have been run, i.e. when all +# eCos devices should be initialized. It does the following: +# +# 1) invoke any "initialized" hooks set up by device scripts. +# +# 2) run the per-user mainrc.tcl script, if it exists, so that users can +# install hooks, modify the GUI display, etc. +# +# 3) warn about any unused command line arguments +# +# 4) optionally warn about any unused entries in the target definition file +# +# 5) clean up the GUI, e.g. remove unwanted windows and borders, and display it. +# +# However if the user specified --help then, instead of all the above, +# a help message is displayed and the auxiliary exits, hopefully taking the +# eCos application with it. + +namespace eval synth { + + proc _handle_CONSTRUCTORS_DONE { } { + + if { $synth::flag_help } { + puts "Usage : <eCos application> <options>" + puts " Options are passed to the I/O auxiliary, and are not" + puts " accessible to the eCos application." + puts "Standard options:" + puts " -io : run with I/O facilities." + puts " -nio : run with no I/O facilities at all." + puts " -nw, --no-windows : run in console mode." + puts " -w, --windows : run in GUI mode (default)." + puts " -v, --version : display the version of the I/O auxiliary." + puts " -h, --help : show this help text." + puts " -k, --keep-going : ignore errors in init scripts or the" + puts " target definition file." + puts " -nr, --no-rc : do not run the user's init scripts." + puts " -x, --exit : terminate I/O auxiliary as soon as the eCos" + puts " application exits (default in console mode)." + puts " -nx, --no-exit : I/O auxiliary keeps running even after eCos" + puts " application has exited (default in GUI mode)." + puts " -V, --verbose : provide additional output during the run." + puts " -l <file>, --logfile <file> : send all output to the specified file. In" + puts " GUI mode this in addition to the main text" + puts " window. In console mode this is instead of" + puts " stdout." + puts " -t <file>, --target <file> : use the specified .tdf file as the target" + puts " definition. The auxiliary will look for this" + puts " file in the current directory, ~/.ecos, and" + puts " finally the install location." + puts " -geometry <geometry> : size and position for the main window." + synth::hook_call "help" + exit 1 + } + + synth::hook_call "ecos_initialized" + + # ---------------------------------------------------------------------------- + if { !$synth::flag_no_rc } { + set _config_file [file join "~/.ecos/synth" "mainrc.tcl"] + if { [file exists $_config_file] } { + if { [file readable $_config_file] } { + if { [catch { source $_config_file } msg ] } { + set error "Failed to execute user initialization file \"$_config_file\"\n" + append error " $msg\n" + if { $synth::flag_verbose } { + append error "------- backtrace ------------------------------------------\n" + append error $::errorInfo + append error "\n------- backtrace ends -------------------------------------\n" + } + synth::report_error $error + } + } else { + synth::report_error "No read access to user initialization file \"$_config_file\"\n" + } + } + unset _config_file + } + + # ---------------------------------------------------------------------------- + # Report any arguments that have not been used up by the auxiliary itself + # or by any device handlers + set unconsumed_args [synth::argv_get_unconsumed] + foreach arg $unconsumed_args { + synth::report_warning "Unrecognised command line option \"$arg\", ignored.\n" + } + + # ---------------------------------------------------------------------------- + if { $synth::flag_verbose } { + set unconsumed_devices [synth::tdf_get_unconsumed_devices] + set unconsumed_options [synth::tdf_get_unconsumed_options] + if { (0 != [llength $unconsumed_devices]) || (0 != [llength $unconsumed_options]) } { + set msg "Target definition file $synth::target_definition\n" + foreach dev $unconsumed_devices { + append msg " synth_device \"$dev\" not recognised.\n" + } + foreach option $unconsumed_options { + set dev [lindex $option 0] + set opt [lindex $option 1] + append msg " synth_device \"$dev\", option \"$opt\" not recognised.\n" + } + synth::report_warning $msg + } + } + + # ---------------------------------------------------------------------------- + if { $synth::flag_gui } { + synth::_cleanup_gui + wm deiconify . + } + + # ---------------------------------------------------------------------------- + # Finally send a reply back to the application so it can really + # start running. Alternatively, if any errors occurred during + # initialization and the user did not specify --keep-going then + # send back an error code, causing the eCos application to terminate. + if { (0 == $synth::_error_count) || $synth::flag_keep_going } { + synth::send_reply 1 0 "" + } else { + synth::send_reply 0 0 "" + } + } +} + +# }}} +# {{{ Requests for the I/O auxiliary itself + +# ---------------------------------------------------------------------------- +# There are three requests which can be aimed at the I/O auxiliary itself, +# rather than at device-specific scripts. These are: INSTANTIATE to instantiate +# a device; CONSTRUCTORS_DONE to indicate when initialization is complete; +# and GET_IRQ_PENDING which deals with interrupts. + +namespace eval synth { + + proc _handle_ecosynth_requests { devid request arg1 arg2 request_data request_len reply_len } { + if { 0x01 == $request } { + synth::_handle_INSTANTIATE $request_data + } elseif { 0x02 == $request } { + synth::_handle_CONSTRUCTORS_DONE + } elseif { 0x03 == $request } { + synth::_handle_GET_IRQ_PENDING + } elseif { 0x04 == $request } { + synth::_handle_GET_VERSION + } else { + error "The eCos application has sent an invalid request sent to the I/O auxiliary" + } + } + + variable _SYNTH_AUXILIARY_PROTOCOL_VERSION 0x01 + proc _handle_GET_VERSION { } { + synth::send_reply $synth::_SYNTH_AUXILIARY_PROTOCOL_VERSION 0 "" + } +} + +# }}} +# {{{ Application exit + +# ---------------------------------------------------------------------------- +# The application has exited. This is detected by an EOF event on the pipe +# from the eCos application. +# +# First the rest of the system is informed about the event using the +# appropriate hook. This should ensure that the various device-specific +# scripts do the right thing, e.g shut down sub-processes. Next, if +# the immediate exit flag is set then that is obeyed. This flag is set by +# default when in command-line mode because there is no point in continuing +# to run if there is neither an application nor a GUI for the user to interact +# with. It also gets set if the user has explicitly requested an exit. +# +# The exit call will invoke the appropriate hooks. +namespace eval synth { + + proc _application_has_exited { } { + + set synth::ecos_running 0 + synth::hook_call "ecos_exit" + + # Depending on command-line arguments and whether or not the GUI is present, + # the auxiliary should now exit + if { $synth::flag_immediate_exit } { + exit 0 + } elseif { !$synth::flag_gui } { + synth::report "eCos application has exited: I/O auxiliary still running in the background.\n" + } + } +} + +# }}} +# {{{ Communication with the eCos application + +namespace eval synth { + + # ---------------------------------------------------------------------------- + # The basic communication routines between the auxiliary and the + # eCos application. _read_request is invoked whenever there is + # a pending event on the pipe from the eCos application, either + # a request or an EOF. It + + # Keep track of a couple of things to detect protocol mismatches. + variable _reply_expected 0 + variable _expected_rxlen 0 + + # Receive a single request from the eCos application and invoke the + # appropriate handler. + proc _read_request { } { + # Read a single request from the application, or possibly EOF + set devid 0 + set reqcode 0 + set arg1 0 + set arg2 0 + set txlen 0 + set txdata "" + set rxlen 0 + set request [read $synth::_channel_from_app 24] + + if { [eof $synth::_channel_from_app] } { + fileevent $synth::_channel_from_app readable "" + synth::_application_has_exited + return + } + + # If a real request is sent then currently the application should + # not be expecting a reply + if { $synth::_reply_expected } { + error "The eCos application should not be sending a request when there is still a reply pending" + } + + set binary_result [binary scan $request "iiiiii" devid reqcode arg1 arg2 txlen rxlen] + if { 6 != $binary_result } { + error "Internal error decoding request from eCos application" + } + + # If running on a 64-bit platform then the above numbers will have been sign-extended, + # which could lead to confusing results + set devid [expr $devid & 0x0FFFFFFFF] + set reqcode [expr $reqcode & 0x0FFFFFFFF] + set arg1 [expr $arg1 & 0x0FFFFFFFF] + set arg2 [expr $arg2 & 0x0FFFFFFFF] + set txlen [expr $txlen & 0x0FFFFFFFF] + set rxlen [expr $rxlen & 0x0FFFFFFFF] + + # The top bit of rxlen is special and indicates whether or not a reply is expected. + set synth::_reply_expected [expr 0 != ($rxlen & 0x080000000)] + set synth::_expected_rxlen [expr $rxlen & 0x07FFFFFFF] + + # Is there additional data to be read + if { $txlen > 0 } { + set txdata [read $synth::_channel_from_app $txlen] + if { [eof $synth::_channel_from_app] } { + fileevent $synth::_channel_from_app readable "" + synth::_application_has_exited + return + } + } + + # The devid can be used to get hold of a handler function, and that will do + # the hard work. + if { ![info exists synth::_device_handlers($devid)] } { + error "A request has been received for an unknown device $devid" + } + + $synth::_device_handlers($devid) $devid $reqcode $arg1 $arg2 $txdata $txlen $synth::_expected_rxlen + } + + # Register _read_request as the handler for file events on the pipe from + # the application. + fileevent $synth::_channel_from_app readable synth::_read_request + + # Send a reply back to eCos. This consists of a two-word structure, + # result and length, followed by the data if any. Currently this + # raises an error if there is a mismatch between the specified and + # actual length of the data. Possibly the code should cope with + # data strings that exceed the specified length, extracting a + # suitable substring. + proc send_reply { result { length 0 } { data "" } } { + # Make sure that a reply is actually expected. + if { !$synth::_reply_expected } { + error "Attempt to send reply to application when no request has been sent" + } else { + set synth::_reply_expected 0 + } + + if { $length > $synth::_expected_rxlen } { + error "Reply contains more data than the application expects: $length bytes instead of $synth::_expected_rxlen" + } + if { ($length > 0) && ([string length $data] != $length) } { + error "Mismatch between specified and actual data length: $length [string length $data]" + } + if { !$synth::ecos_running } { + return + } + + set struct [binary format "ii" $result $length] + # Ignore any errors when writing down the pipe. The only likely error is + # when the application has exited, causing a SIGPIPE which Tcl + # will handle. The application should be waiting for this response. + catch { + puts -nonewline $synth::_channel_to_app $struct + if { $length > 0 } { + puts -nonewline $synth::_channel_to_app $data + } + } + } +} + +# }}} + +# {{{ initrc + +# ---------------------------------------------------------------------------- +# Just before control is returned to the eCos application, run the per-user +# file, ~/.ecos/synth/initrc.tcl. The main GUI is now in place and the target +# definition file has been read in, but no eCos static constructors have +# been run yet and hence no devices have been loaded or activated. +# All the various core procedures have been defined. initrc gives the user +# a chance to install hooks, redefine some internals, and so on. +# Another initialization file mainrc.tcl gets read in later, just before +# the eCos application really starts running. +# +# Possibly ecosynth should also read in a system-wide initialization +# file equivalent to emacs' site-start.el, but the extra complexity +# does not seem warranted just yet. + +if { !$synth::flag_no_rc } { + set _config_file [file join "~/.ecos/synth" "initrc.tcl"] + if { [file exists $_config_file] } { + if { [file readable $_config_file] } { + if { [catch { source $_config_file } msg ] } { + set error "Failed to execute user initialization file \"$_config_file\"\n" + append error " $msg\n" + if { $synth::flag_verbose } { + append error "------- backtrace ------------------------------------------\n" + append error $::errorInfo + append error "\n------- backtrace ends -------------------------------------\n" + } + synth::report_error $error + } + } else { + synth::report_error "No read access to user initialization file \"$_config_file\"\n" + } + } + unset _config_file +} + +# }}} +# {{{ Done + +# ---------------------------------------------------------------------------- +# The last few steps. + +# Once everything has been initialized the application can be woken up again. +# It should be blocked waiting for a single byte on the pipe. +if { $synth::flag_debug } { + synth::report "Core initialization complete, resuming the eCos application.\n" +} + +puts -nonewline $synth::_channel_to_app "." + +# Enter the event loop. In console mode there is a problem if -nx has been +# specified: there may not be any event handlers left once the eCos application +# has exited, so the vwait would abort. This is avoided by a dummy after proc. +if { !$synth::flag_gui && !$synth::flag_immediate_exit } { + namespace eval synth { + proc _dummy_after_handler { } { + after 1000000 synth::_dummy_after_handler + } + } + after 1000000 synth::_dummy_after_handler +} + +vwait synth::_ecosynth_exit + +# }}}
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/help.xbm @@ -0,0 +1,6 @@ +#define help_width 16 +#define help_height 15 +static unsigned char help_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0xc0, 0x01, 0xe0, 0x03, 0x30, 0x06, 0x30, 0x06, + 0x00, 0x06, 0x00, 0x03, 0x80, 0x01, 0x80, 0x01, 0x00, 0x00, 0x80, 0x01, + 0x80, 0x01, 0x00, 0x00, 0x00, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/paste.xbm @@ -0,0 +1,6 @@ +#define paste_width 16 +#define paste_height 15 +static unsigned char paste_bits[] = { + 0x00, 0x00, 0xe0, 0x01, 0x3e, 0x3f, 0xd1, 0x22, 0x09, 0x24, 0xf9, 0x27, + 0x01, 0x20, 0xc1, 0x3f, 0x41, 0x20, 0x41, 0x50, 0x41, 0x77, 0x41, 0x40, + 0x41, 0x4e, 0x7e, 0x40, 0xc0, 0x7f};
new file mode 100644 index 0000000000000000000000000000000000000000..dc461b0350e991932690eec86a8fe5ead8d00e1f GIT binary patch literal 1981 zc$~eI+YNvq3;_LR3LOC>OyB_Szl0-H6C!Eo!?Xk%J|vC3_CT*3j=07g_LKsAu^8ih z<vusx0u)wmC%V!d+<tVS<7$eBCflHKRyR!1KtkfOMWmFHts^uzyp>o@W$PBB>6rML zI;3q#jVWi%>HI;nAjJu*ZYbJu)>OVvxYDYEhAG!faz5eXV(U-)rC5VSm=-(W1hnLK HG`c_^fXf89
new file mode 100644 index 0000000000000000000000000000000000000000..38ccc9fac1a9cc15057cca74d19018fd9d58cc2d GIT binary patch literal 1981 zc$~%5!3}^Q3<XfnOraxa#0eb0{g-frYGNc!+g}ADHXbC6Jou>F66UcVmoUW`=&pSo zvaa)yuC$0%u3Jeby}+%fFP+ck<RH3&=3TT$(M<}eLasRpYB}As1;Ozlvc$}}Lr&{$ z@_U`3UItp2bJkXz53~t6nV8XiN;^7%v)18j@g<Fx>d@5WHA9&<__)mZoBdLL`H`0C Ll{CusYx+VDfm4Qk
new file mode 100644 index 0000000000000000000000000000000000000000..32a02b28b1255f00722684a751eb388c57312d96 GIT binary patch literal 1981 zc$~$Q(G7qg3`G5A3LOC>OyB_Szl0;G35jWF?}9aG!;fCLSFY%m!xG1s!<<q$eyx3- z-0RvtJg@g$H@eWJ3CRJe1ua!{#!9_?_!Nk0P7raWT1+ZK$D{5<a&;S3;QE-RxmL}+ zCR)DX(Y2sa+bC^~M%>=$7As%i=&FBn%{aQ>$3;|Rf?_wj;=dHq6&i8l(yYcpXY7qO H2k~W{(>$hY
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/save.xbm @@ -0,0 +1,6 @@ +#define save_width 16 +#define save_height 15 +static unsigned char save_bits[] = { + 0x00, 0x00, 0xfe, 0xff, 0x0a, 0xa0, 0x0a, 0xe0, 0x0a, 0xa0, 0x0a, 0xa0, + 0x0a, 0xa0, 0x0a, 0xa0, 0xf2, 0x9f, 0x02, 0x80, 0xf2, 0x9f, 0xf2, 0x93, + 0xf2, 0x93, 0xf2, 0x93, 0xfc, 0xff, };
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/saveall.xbm @@ -0,0 +1,6 @@ +#define saveall_width 16 +#define saveall_height 15 +static unsigned char saveall_bits[] = { + 0x00, 0x00, 0xfe, 0xff, 0x0a, 0xa0, 0x4a, 0xea, 0xaa, 0xaa, 0xea, 0xaa, + 0xaa, 0xaa, 0x0a, 0xa0, 0xf2, 0x9f, 0x02, 0x80, 0xf2, 0x9f, 0xf2, 0x93, + 0xf2, 0x93, 0xf2, 0x93, 0xfc, 0xff, };
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/tick_no.xbm @@ -0,0 +1,5 @@ +#define tick_no_width 11 +#define tick_no_height 11 +static unsigned char tick_no_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x8c, 0x01, 0xd8, 0x00, 0x70, 0x00, + 0xd8, 0x00, 0x8c, 0x01, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/tick_yes.xbm @@ -0,0 +1,5 @@ +#define tick_yes_width 11 +#define tick_yes_height 11 +static unsigned char tick_yes_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x01, 0xc4, 0x01, 0xec, 0x00, + 0x7c, 0x00, 0x38, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00};
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/user_initrc.tcl @@ -0,0 +1,9 @@ +# ~/.ecos/synth/initrc.tcl +# +# This configuration file is executed by ecosynth, the eCos synthetic +# target auxiliary program, early on during initialization. Typically +# this file is used to set up search paths and similar variables. The +# eCos synthetic target documentation should be consulted for more +# information. +# +# This file is executed in a Tcl interpreter, so Tcl syntax applies.
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/host/user_mainrc.tcl @@ -0,0 +1,10 @@ +# ~/.ecos/synth/mainrc.tcl +# +# This configuration file is executed by ecosynth, the eCos synthetic +# target auxiliary program, just before the application is allowed +# to continue. The target definition file has been processed and the +# GUI has been set up, although usually the event loop will not have +# been entered and no windows will have been displayed yet. +# +# This file is executed in a Tcl interpreter, so Tcl syntax applies. +
--- a/packages/hal/synth/arch/current/include/hal_io.h +++ b/packages/hal/synth/arch/current/include/hal_io.h @@ -11,6 +11,7 @@ //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under @@ -199,17 +200,33 @@ typedef volatile CYG_ADDRWORD HAL_IO_REG #define CYG_HAL_SYS_SIGINT 2 #define CYG_HAL_SYS_SIGQUIT 3 #define CYG_HAL_SYS_SIGILL 4 +#define CYG_HAL_SYS_SIGTRAP 5 +#define CYG_HAL_SYS_SIGABRT 6 #define CYG_HAL_SYS_SIGBUS 7 #define CYG_HAL_SYS_SIGFPE 8 +#define CYG_HAL_SYS_SIGKILL 9 +#define CYG_HAL_SYS_SIGUSR1 10 #define CYG_HAL_SYS_SIGSEGV 11 +#define CYG_HAL_SYS_SIGUSR2 12 #define CYG_HAL_SYS_SIGPIPE 13 #define CYG_HAL_SYS_SIGALRM 14 #define CYG_HAL_SYS_SIGTERM 15 +#define CYG_HAL_SYS_SIGSTKFLT 16 #define CYG_HAL_SYS_SIGCHLD 17 #define CYG_HAL_SYS_SIGCONT 18 #define CYG_HAL_SYS_SIGSTOP 19 #define CYG_HAL_SYS_SIGTSTP 20 +#define CYG_HAL_SYS_SIGTTIN 21 +#define CYG_HAL_SYS_SIGTTOU 22 +#define CYG_HAL_SYS_SIGURG 23 +#define CYG_HAL_SYS_SIGXCPU 24 +#define CYG_HAL_SYS_SIGXFSZ 25 +#define CYG_HAL_SYS_SIGVTALRM 26 +#define CYG_HAL_SYS_SIGPROF 27 +#define CYG_HAL_SYS_SIGWINCH 28 #define CYG_HAL_SYS_SIGIO 29 +#define CYG_HAL_SYS_SIGPWR 30 +#define CYG_HAL_SYS_SIGSYS 31 #define CYG_HAL_SYS_SA_NOCLDSTOP 0x00000001 #define CYG_HAL_SYS_SA_NOCLDWAIT 0x00000002 @@ -317,6 +334,13 @@ struct cyg_hal_sys_itimerval { struct cyg_hal_sys_timeval hal_it_value; }; +// System calls and related constants, or rather the subset that is +// needed internally. +#define CYG_HAL_SYS_R_OK 0x04 +#define CYG_HAL_SYS_W_OK 0x02 +#define CYG_HAL_SYS_X_OK 0x01 +#define CYG_HAL_SYS_F_OK 0x00 + /* lseek whence flags */ #define CYG_HAL_SYS_SEEK_SET 0 /* Seek from beginning of file. */ #define CYG_HAL_SYS_SEEK_CUR 1 /* Seek from current position. */ @@ -399,6 +423,13 @@ externC int cyg_hal_sys_seti externC int cyg_hal_sys_gettimeofday(struct cyg_hal_sys_timeval*, struct cyg_hal_sys_timezone*); +externC int cyg_hal_sys_access(const char*, int); +externC int cyg_hal_sys_fork(void); +externC int cyg_hal_sys_execve(const char*, const char* [], const char* []); +externC int cyg_hal_sys_pipe(int []); +externC int cyg_hal_sys_close(int); +externC int cyg_hal_sys_dup2(int, int); + // The actual implementation appears to return the new brk() value. externC void* cyg_hal_sys_brk(void*); @@ -416,8 +447,35 @@ extern const char** cyg_hal_sys_envi // ---------------------------------------------------------------------------- // Interaction between the application and the auxiliary. -// Not yet available, but there is a hardware-initialization routine. -externC void hal_synthetic_target_init(void); + +// Is the auxiliary actually in use/available? This flag should be tested by +// device drivers prior to attempting any communication with the auxiliary. +extern cyg_bool synth_auxiliary_running; + +// The fundamental I/O operation: sending a request to the auxiliary and +// optionally getting back a reply. A null pointer for the response field +// indicates that no reply is expected. +externC void synth_auxiliary_xchgmsg(int /* devid */, int /* request */, + int /* arg1 */, int /* arg2 */, + const unsigned char* /* txdata */, int /* txlen */, + int* /* response */, + unsigned char* /* rxdata */, int* /* actual_rxlen */, + int /* rxlen */); + +// Request that the auxiliary instantiates a given device, loading appropriate +// support code as required. This function takes the following arguments: +// 1) the location of the package that should provide this device, e.g. +// devs/eth/synth +// 2) the version of that package currently being used, e.g. "current" +// 3) the name of the device, e.g. "ethernet". This identifies the +// Tcl script that should be loaded to handle requests for this device. +// 4) the name of the device instance, e.g. "eth0". +// 5) device-specific initialization data. +externC int synth_auxiliary_instantiate(const char*, const char*, const char*, const char*, const char*); + +// Support for generating strings +#define SYNTH_MAKESTRING1(a) #a +#define SYNTH_MAKESTRING(a) SYNTH_MAKESTRING1(a) //----------------------------------------------------------------------------- #endif // ifndef CYGONCE_HAL_HAL_IO_H
--- a/packages/hal/synth/arch/current/src/synth_diag.c +++ b/packages/hal/synth/arch/current/src/synth_diag.c @@ -8,6 +8,7 @@ //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under @@ -65,17 +66,25 @@ #include <cyg/infra/cyg_ass.h> //----------------------------------------------------------------------------- - -// When the auxiliary exists, hal_diag_init() will need to contact it and -// get hold of a suitable console device. +// If the auxiliary exists, hal_diag_init() will try to contact it and +// instantiate a console device. Subsequent console writes will be +// redirected to that device, as long as the auxiliary is up and running. +// If the auxiliary is not being used or has exited, console writes +// will instead go to stdout. // -// When interacting with stdin/stdout, arguably there should be some -// manipulation of tty settings e.g. to support single character -// input. However it is not clear which settings would be preferable -// to the default. +// This code also contains an implementation of hal_diag_read_char() +// which is probably not very useful. Currently it works by reading +// from stdin, but no attempt is made to set the tty into raw mode +// or anything like that. + +static int auxiliary_console_id = -1; void hal_diag_init( void ) { + if (synth_auxiliary_running) { + auxiliary_console_id = synth_auxiliary_instantiate("hal/synth/arch", SYNTH_MAKESTRING(CYGPKG_HAL_SYNTH), "console", + (const char*) 0, (const char*) 0); + } } // Output a single character. @@ -86,39 +95,53 @@ void hal_diag_init( void ) // I/O intensive facilities like unbuffered tracing). Therefore // this code will buffer lines up to 128 characters before // doing the I/O. +// +// NOTE: one problem is that there is no support for flushing buffers +// at this level. Therefore if say C library stdio ends up mapped to +// HAL diagnostics I/O then functions like fflush() and setvbuf() will +// not behave the way they should. There is no simple workaround at +// this level, the required information is not available. void hal_diag_write_char(char c) { static int diag_index = 0; - static char diag_buffer[128]; + static unsigned char diag_buffer[128]; CYG_ASSERT(diag_index < 128, "Diagnostic buffer overflow"); - diag_buffer[diag_index++] = c; + diag_buffer[diag_index++] = (unsigned char) c; if (('\n' == c) || (128 == diag_index)) { - int written; - char* next = diag_buffer; + if ((-1 != auxiliary_console_id) && synth_auxiliary_running) { + synth_auxiliary_xchgmsg(auxiliary_console_id, 0, 0, 0, diag_buffer, diag_index, (int *) 0, (unsigned char*) 0, (int *)0, 0); + diag_index = 0; + } else { + int written; + char* next = diag_buffer; - while (diag_index > 0) { - written = cyg_hal_sys_write(1, next, diag_index); - if (written > 0) { - diag_index -= written; - next += written; - } else if ((-CYG_HAL_SYS_EINTR != written) && (-CYG_HAL_SYS_EAGAIN != written)) { - CYG_FAIL("Unexpected error writing to stdout."); - diag_index = 0; - break; + while (diag_index > 0) { + written = cyg_hal_sys_write(1, next, diag_index); + if (written > 0) { + diag_index -= written; + next += written; + } else if ((-CYG_HAL_SYS_EINTR != written) && (-CYG_HAL_SYS_EAGAIN != written)) { + CYG_FAIL("Unexpected error writing to stdout."); + diag_index = 0; + break; + } } + CYG_ASSERT(0 == diag_index, "All data should have been written out"); + diag_index = 0; + cyg_hal_sys_fdatasync(1); } - CYG_ASSERT(0 == diag_index, "All data should have been written out"); - diag_index = 0; - cyg_hal_sys_fdatasync(1); } } -// Diagnostic input. It is not clear that this is actually useful. The -// read syscall will get woken up by the itimer alarm, but we don't -// want to stop reading if that's the case +// Diagnostic input. It is not clear that this is actually useful, +// input would normally go to gdb rather than to the application. If +// keyboard input really is required then that should be handled via a +// suitable device driver interacting with the auxiliary, not at the +// HAL level. The read syscall will get woken up by the itimer alarm, +// but we don't want to stop reading if that's the case void hal_diag_read_char(char *c) {
--- a/packages/hal/synth/arch/current/src/synth_entry.c +++ b/packages/hal/synth/arch/current/src/synth_entry.c @@ -8,6 +8,7 @@ //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under @@ -99,6 +100,8 @@ cyg_hal_invoke_constructors (void) // startup. externC void cyg_start( void ); +externC void synth_hardware_init(void); +externC void synth_hardware_init2(void); void _linux_entry( void ) { @@ -135,9 +138,9 @@ void _linux_entry( void ) // "Initialize any global pointer register". There is no such register. // Perform platform-specific initialization. Actually, all Linux - // platforms can share this. It involves setting up signal handlers - // and so on. - hal_synthetic_target_init(); + // platforms can share this. It involves setting up signal handlers, + // starting the I/O auxiliary, and so on. + synth_hardware_init(); // This is not a ROM startup, so no need to worry about copying the // .data section. @@ -149,6 +152,14 @@ void _linux_entry( void ) // Invoke the C++ constructors. cyg_hal_invoke_constructors(); + // Once the C++ constructors have been invoked, a second stage + // of hardware initialization is desirable. At this point all + // eCos device drivers should have been initialized so the + // I/O auxiliary will have loaded the appropriate support + // scripts, and the auxiliary can now map the window(s) on to + // the display and generally operate normally. + synth_hardware_init2(); + // "Call cyg_start()". OK. cyg_start();
--- a/packages/hal/synth/arch/current/src/synth_intr.c +++ b/packages/hal/synth/arch/current/src/synth_intr.c @@ -8,6 +8,7 @@ //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under @@ -50,32 +51,34 @@ // sigprocmask handling. // // In the synthetic target interrupts and exceptions are based around -// POSIX sighandlerals. When the clock ticks a SIGALRM signal is raised. +// POSIX sighandlers. When the clock ticks a SIGALRM signal is raised. // When the I/O auxiliary wants to raise some other interrupt, it // sends a SIGIO signal. When an exception occurs this results in // signals like SIGILL and SIGSEGV. This implies an implementation -// where the VSR is the signal handler. Disabling interrupts then -// means using sigprocmask() to block certain signals, and enabling -// interrupts means unblocking those signals. +// where the VSR is the signal handler. Disabling interrupts would +// then mean using sigprocmask() to block certain signals, and +// enabling interrupts means unblocking those signals. // // However there are a few problems. One of these is performance: some // bits of the system such as buffered tracing make very extensive use // of enabling and disabling interrupts, so making a sigprocmask // system call each time adds a lot of overhead. More seriously, there // is a subtle discrepancy between POSIX signal handling and hardware -// interrupts. It is expected that signal handlers return, and then -// the system automatically passes control back to the foreground thread. +// interrupts. Signal handlers are expected to return, and then the +// system automatically passes control back to the foreground thread. // In the process, the sigprocmask is manipulated before invoking the // signal handler and restored afterwards. Interrupt handlers are // different: it is quite likely that an interrupt results in another -// eCos thread being activated, so the signal handler does not actually -// return until the interrupted thread gets another chance to run. +// eCos thread being activated, so the signal handler does not +// actually return until the interrupted thread gets another chance to +// run. // -// The second problem can be addressed by making the sigprocmask part of -// the thread state, saving and restoring it as part of a context switch. -// This matches quite nicely onto typical real hardware, where there might -// be a flag inside some control register that controls whether or not -// interrupts are enabled. However this adds further to the overhead. +// The second problem can be addressed by making the sigprocmask part +// of the thread state, saving and restoring it as part of a context +// switch (c.f. siglongjmp()). This matches quite nicely onto typical +// real hardware, where there might be a flag inside some control +// register that controls whether or not interrupts are enabled. +// However this adds more system calls to context switch overhead. // // The alternative approach is to implement interrupt enabling and // disabling in software. The sigprocmask is manipulated only once, @@ -93,14 +96,14 @@ // interrupts. This is not currently implemented. // // At first glance it might seem that an interrupt stack could be -// implemented trivially using sigaltstack. This does not quite work. -// The problem is that signal handlers do not always return -// immediately, so the system does not get a chance to clean up the -// signal handling stack. A separate interrupt stack is possible but -// would have to be implemented here, in software, e.g. by having the -// signal handler invoke the VSR on that stack. Unfortunately the -// system may have pushed quite a lot of state on to the current stack -// already when raising the signal, so things could get messy. +// implemented trivially using sigaltstack. This does not quite work: +// signal handlers do not always return immediately, so the system +// does not get a chance to clean up the signal handling stack. A +// separate interrupt stack is possible but would have to be +// implemented here, in software, e.g. by having the signal handler +// invoke the VSR on that stack. Unfortunately the system may have +// pushed quite a lot of state on to the current stack already when +// raising the signal, so things could get messy. // ---------------------------------------------------------------------------- #include <pkgconf/hal.h> @@ -114,11 +117,14 @@ #endif #include <cyg/infra/cyg_type.h> // base types +#include <cyg/infra/diag.h> #include <cyg/hal/hal_arch.h> #include <cyg/hal/hal_intr.h> #include <cyg/hal/hal_io.h> #include <cyg/infra/cyg_ass.h> // Assertions are safe in the synthetic target +#include "synth_protocol.h" + // ---------------------------------------------------------------------------- // Statics. @@ -138,10 +144,10 @@ static volatile cyg_bool_t synth_sigalr static void (*synth_VSR)(void) = (void (*)(void)) 0; // The current ISR status and mask registers, or rather software -// emulations there of. These are not static since -// application-specific VSRs may want to examine/manipulate these. -// They are also not exported in any header file, forcing people -// writing such VSRs to know what they are doing. +// emulations thereof. These are not static since application-specific +// VSRs may want to examine/manipulate these. They are also not +// exported in any header file, forcing people writing such VSRs to +// know what they are doing. volatile cyg_uint32 synth_pending_isrs = 0; volatile cyg_uint32 synth_masked_isrs = 0xFFFFFFFF; @@ -171,12 +177,18 @@ synth_default_isr(cyg_vector_t vector, c return CYG_ISR_HANDLED; } -// The VSR is invoked under the following circumstances: +// The VSR is invoked +// 1) directly by a SIGALRM or SIGIO signal handler, if interrupts +// were enabled. +// 2) indirectly by hal_enable_interrupts(), if a signal happened +// while interrupts were disabled. hal_enable_interrupts() +// will have re-invoked the signal handler. // -// 1) interrupts were globally enabled, but are now disabled. -// 2) there are pending ISRs which are not masked off +// On entry interrupts are disabled, and there should be one or more +// pending ISRs which are not masked off. // -// The implementation is as per the HAL specification, where applicable. +// The implementation is as per the HAL specification, where +// applicable. static void synth_default_vsr(void) @@ -192,8 +204,8 @@ synth_default_vsr(void) // synchronously via enable_interrupts. // Increment the kernel scheduler lock, if the kernel is present. - // This prevents any attempts at context switching while interrupt - // handling is in progress. + // This prevents context switching while interrupt handling is in + // progress. #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT cyg_scheduler_lock(); #endif @@ -207,17 +219,20 @@ synth_default_vsr(void) // Decode the actual external interrupt being delivered. This is // determined from the pending and masked variables. Only one isr // source can be handled here, since interrupt_end must be invoked - // with details of that interrupt. + // with details of that interrupt. Multiple pending interrupts + // will be handled by a recursive call HAL_LSBIT_INDEX(isr_vector, (synth_pending_isrs & ~synth_masked_isrs)); CYG_ASSERT((CYGNUM_HAL_ISR_MIN <= isr_vector) && (isr_vector <= CYGNUM_HAL_ISR_MAX), "ISR vector must be valid"); - + isr_result = (*synth_isr_handlers[isr_vector].isr)(isr_vector, synth_isr_handlers[isr_vector].data); // Do not switch back from the interrupt stack, there isn't one. // Interrupts were not enabled before, so they must be enabled // now. This may result in a recursive invocation if other IRQs - // are still pending. + // are still pending. The ISR should have either acknowledged or + // masked the current interrupt source, to prevent a recursive + // call for the current interrupt. hal_enable_interrupts(); // Now call interrupt_end() with the result of the isr and the @@ -225,7 +240,7 @@ synth_default_vsr(void) // a context switch to another thread. In the latter case, when // the current thread is reactivated we end up back here. The // third argument should be a pointer to the saved state, but that - // is only relevant for thread-aware debugging which is not + // is only relevant for thread-aware debugging which is not yet // supported by the synthetic target. { extern void interrupt_end(cyg_uint32, CYG_ADDRESS, HAL_SavedRegisters*); @@ -238,7 +253,7 @@ synth_default_vsr(void) // Enabling interrupts. If a SIGALRM or SIGIO arrived at an inconvenient // time, e.g. when already interacting with the auxiliary, then these -// will have been left pending and must be servied now. Next, enabling +// will have been left pending and must be serviced now. Next, enabling // interrupts means checking the interrupt pending and mask registers // and seeing if the VSR should be invoked. void @@ -262,7 +277,7 @@ hal_enable_interrupts(void) // is to raise a signal, e.g. SIGUSR1. That way all interrupts // come in via the system's signal handling mechanism, and // it might be possible to do something useful with saved contexts - // etc. + // etc., facilitating thread-aware debugging. if (0 != (synth_pending_isrs & ~synth_masked_isrs)) { hal_interrupts_enabled = false; (*synth_VSR)(); @@ -457,11 +472,12 @@ synth_exception_sighandler(int sig) // handler for CYGNUM_HAL_INTERRUPT_RTC, but it depends on the HAL // for low-level manipulation of the clock hardware. // -// There is a problem with HAL_CLOCK_READ(). The obvious implementation -// would use getitimer(), but that has the wrong behaviour: it is intended -// for fairly coarse intervals and works in terms of system clock ticks, -// as opposed to a fine-grained implementation that actually examines the -// system clock. Instead it is necessary to use gettimeofday(). +// There is a problem with HAL_CLOCK_READ(). The obvious +// implementation would use getitimer(), but that has the wrong +// behaviour: it is intended for fairly coarse intervals and works in +// terms of system clock ticks, as opposed to a fine-grained +// implementation that actually examines the system clock. Instead use +// gettimeofday(). static struct cyg_hal_sys_timeval synth_clock = { 0, 0 }; @@ -470,7 +486,8 @@ hal_clock_initialize(cyg_uint32 period) { struct cyg_hal_sys_itimerval timer; - // Needed for hal_clock_read() + // Needed for hal_clock_read(), if HAL_CLOCK_READ() is used before + // the first clock interrupt. cyg_hal_sys_gettimeofday(&synth_clock, (struct cyg_hal_sys_timezone*) 0); // The synthetic target clock resolution is in microseconds. A typical @@ -508,7 +525,8 @@ synth_alrm_sighandler(int sig) // A timer signal means that IRQ 0 needs attention. synth_pending_isrs |= 0x01; - // If any of the pending interrupts are not masked, invoke the VSR + // If any of the pending interrupts are not masked, invoke the + // VSR. That will reenable interrupts. if (0 != (synth_pending_isrs & ~synth_masked_isrs)) { (*synth_VSR)(); } else { @@ -548,6 +566,22 @@ hal_clock_read(void) // there may already be ongoing communication with the auxiliary. // Instead some volatile flags are used to keep track of which signals // were raised while interrupts were disabled. +// +// It might be better to perform the interaction with the auxiliary +// as soon as possible, i.e. either in the SIGIO handler or when the +// current communication completes. That way the mask of pending +// interrupts would remain up to date even when interrupts are +// disabled, thus allowing applications to run in polled mode. + +// A little utility called when the auxiliary has been asked to exit, +// implicitly affecting this application as well. The sole purpose +// of this function is to put a suitably-named function on the stack +// to make it more obvious from inside gdb what is happening. +static void +synth_io_handle_shutdown_request_from_auxiliary(void) +{ + cyg_hal_sys_exit(0); +} static void synth_io_sighandler(int sig) @@ -564,7 +598,28 @@ synth_io_sighandler(int sig) // Update the interrupt status "register" to match pending interrupts // Contact the auxiliary to find out what interrupts are currently pending there. - CYG_FAIL("SIGIO should not occur until the auxiliary is implemented"); + // If there is no auxiliary at present, e.g. because it has just terminated + // and things are generally somewhat messy, ignore it. + // + // This code also deals with the case where the user has requested program + // termination. It would be wrong for the auxiliary to just exit, since the + // application could not distinguish that case from a crash. Instead the + // auxiliary can optionally return an additional byte of data, and if that + // byte actually gets sent then that indicates pending termination. + if (synth_auxiliary_running) { + int result; + int actual_len; + unsigned char dummy[1]; + synth_auxiliary_xchgmsg(SYNTH_DEV_AUXILIARY, SYNTH_AUXREQ_GET_IRQPENDING, 0, 0, + (const unsigned char*) 0, 0, // The auxiliary does not need any additional data + &result, dummy, &actual_len, 1); + synth_pending_isrs |= result; + if (actual_len) { + // The auxiliary has been asked to terminate by the user. This + // request has now been passed on to the eCos application. + synth_io_handle_shutdown_request_from_auxiliary(); + } + } // If any of the pending interrupts are not masked, invoke the VSR if (0 != (synth_pending_isrs & ~synth_masked_isrs)) { @@ -579,33 +634,17 @@ synth_io_sighandler(int sig) } // ---------------------------------------------------------------------------- -// SIGPIPE and SIGCHLD are special, related to the auxiliary process. -static void -synth_pipe_sighandler(int sig) -{ - CYG_ASSERT(CYG_HAL_SYS_SIGPIPE == sig, "The right signal handler should be invoked"); - CYG_FAIL("The auxiliary is not yet implemented"); -} - -static void -synth_chld_sighandler(int sig) -{ - CYG_ASSERT(CYG_HAL_SYS_SIGCHLD == sig, "The right signal handler should be invoked"); - CYG_FAIL("The auxiliary is not yet implemented"); -} - -// ---------------------------------------------------------------------------- // Here we define an action to do in the idle thread. For the -// synthetic architecture it makes no sense to spin eating processor -// time that other processes could make use of. Instead we call -// select. The itimer will still go off and kick the scheduler back -// into life so giving up an escape path from the select. There is one -// problem: in some configurations, e.g. when preemption is disabled, -// the idle thread must yield continuously rather than blocking. +// synthetic target it makes no sense to spin eating processor time +// that other processes could make use of. Instead we call select. The +// itimer will still go off and kick the scheduler back into life, +// giving us an escape path from the select. There is one problem: in +// some configurations, e.g. when preemption is disabled, the idle +// thread must yield continuously rather than blocking. void hal_idle_thread_action(cyg_uint32 loop_count) { -#ifndef CYGIMP_IDLE_THREAD_YIELD +#ifndef CYGIMP_HAL_IDLE_THREAD_SPIN cyg_hal_sys__newselect(0, (struct cyg_hal_sys_fd_set*) 0, (struct cyg_hal_sys_fd_set*) 0, @@ -614,11 +653,583 @@ hal_idle_thread_action(cyg_uint32 loop_c #endif CYG_UNUSED_PARAM(cyg_uint32, loop_count); } + +// ---------------------------------------------------------------------------- +// The I/O auxiliary. +// +// I/O happens via an auxiliary process. During startup this code attempts +// to locate and execute a program ecosynth which should be installed in +// ../libexec/ecosynth relative to some directory on the search path. +// Subsequent I/O operations involve interacting with this auxiliary. + +#define MAKESTRING1(a) #a +#define MAKESTRING2(a) MAKESTRING1(a) +#define AUXILIARY "../libexec/ecos/hal/synth/arch/" MAKESTRING2(CYGPKG_HAL_SYNTH) "/ecosynth" + +// Is the auxiliary up and running? +cyg_bool synth_auxiliary_running = false; + +// The pipes to and from the auxiliary. +static int to_aux = -1; +static int from_aux = -1; + +// Attempt to start up the auxiliary. Note that this happens early on +// during system initialization so it is "known" that the world is +// still simple, e.g. that no other files have been opened. +static void +synth_start_auxiliary(void) +{ +#define BUFSIZE 256 + char filename[BUFSIZE]; + const char* path = 0; + int i, j; + cyg_bool found = false; + int to_aux_pipe[2]; + int from_aux_pipe[2]; + int child; + int aux_version; +#if 1 + // Check for a command line argument -io. Only run the auxiliary if this + // argument is provided, i.e. default to traditional behaviour. + for (i = 1; i < cyg_hal_sys_argc; i++) { + const char* tmp = cyg_hal_sys_argv[i]; + if ('-' == *tmp) { + // Arguments beyond -- are reserved for use by the application, + // and should not be interpreted by the HAL itself or by ecosynth. + if (('-' == tmp[1]) && ('\0' == tmp[2])) { + break; + } + tmp++; + if ('-' == *tmp) { + // Do not distinguish between -io and --io + tmp++; + } + if (('i' == tmp[0]) && ('o' == tmp[1]) && ('\0' == tmp[2])) { + found = 1; + break; + } + } + } + if (!found) { + return; + } +#else + // Check for a command line argument -ni or -nio. Always run the + // auxiliary unless this argument is given, i.e. default to full + // I/O support. + for (i = 1; i < cyg_hal_sys_argc; i++) { + const char* tmp = cyg_hal_sys_argv[i]; + if ('-' == *tmp) { + if (('-' == tmp[1]) && ('\0' == tmp[2])) { + break; + } + tmp++; + if ('-' == *tmp) { + tmp++; + } + if ('n' == *tmp) { + tmp++; + if ('i' == *tmp) { + tmp++; + if ('\0' == *tmp) { + found = 1; // -ni or --ni + break; + } + if (('o' == *tmp) && ('\0' == tmp[1])) { + found = 1; // -nio or --nio + break; + } + } + } + } + } + if (found) { + return; + } +#endif + + // The auxiliary must be found relative to the current search path, + // so look for a PATH= environment variable. + for (i = 0; (0 == path) && (0 != cyg_hal_sys_environ[i]); i++) { + const char *var = cyg_hal_sys_environ[i]; + if (('P' == var[0]) && ('A' == var[1]) && ('T' == var[2]) && ('H' == var[3]) && ('=' == var[4])) { + path = var + 5; + } + } + if (0 == path) { + // Very unlikely, but just in case. + path = ".:/bin:/usr/bin"; + } + + found = 0; + while (!found && ('\0' != *path)) { // for every entry in the path + char *tmp = AUXILIARY; + + j = 0; + + // As a special case, an empty string in the path corresponds to the + // current directory. + if (':' == *path) { + filename[j++] = '.'; + } else { + while ((j < BUFSIZE) && ('\0' != *path) && (':' != *path)) { + filename[j++] = *path++; + } + // If not at the end of the search path, move on to the next entry. + if ('\0' != *path) { + while ((':' != *path) && ('\0' != *path)) { + path++; + } + if (':' == *path) { + path++; + } + } + } + // Now append a directory separator, and then the name of the executable. + if (j < BUFSIZE) { + filename[j++] = '/'; + } + while ((j < BUFSIZE) && ('\0' != *tmp)) { + filename[j++] = *tmp++; + } + // If there has been a buffer overflow, skip this entry. + if (j == BUFSIZE) { + filename[BUFSIZE-1] = '\0'; + diag_printf("Warning: buffer limit reached while searching PATH for the I/O auxiliary.\n"); + diag_printf(" : skipping current entry.\n"); + } else { + // filename now contains a possible match for the auxiliary. + filename[j++] = '\0'; + if (0 == cyg_hal_sys_access(filename, CYG_HAL_SYS_X_OK)) { + found = true; + } + } + } +#undef BUFSIZE + + if (!found) { + diag_printf("Error: unable to find the I/O auxiliary program on the current search PATH\n"); + diag_printf(" : please install the appropriate host-side tools.\n"); + cyg_hal_sys_exit(1); + } + + // An apparently valid executable exists (or at the very least it existed...), + // so create the pipes that will be used for communication. + if ((0 != cyg_hal_sys_pipe(to_aux_pipe)) || + (0 != cyg_hal_sys_pipe(from_aux_pipe))) { + diag_printf("Error: unable to set up pipes for communicating with the I/O auxiliary.\n"); + cyg_hal_sys_exit(1); + } + + // Time to fork(). + child = cyg_hal_sys_fork(); + if (child < 0) { + diag_printf("Error: failed to fork() process for the I/O auxiliary.\n"); + cyg_hal_sys_exit(1); + } else if (child == 0) { + cyg_bool found_dotdot; + // There should not be any problems rearranging the file descriptors as desired... + cyg_bool unexpected_error = 0; + + // In the child process. Close unwanted file descriptors, then some dup2'ing, + // and execve() the I/O auxiliary. The auxiliary will inherit stdin, + // stdout and stderr from the eCos application, so that functions like + // printf() work as expected. In addition fd 3 will be the pipe from + // the eCos application and fd 4 the pipe to the application. It is possible + // that the eCos application was run from some process other than a shell + // and hence that file descriptors 3 and 4 are already in use, but that is not + // supported. One possible workaround would be to close all file descriptors + // >= 3, another would be to munge the argument vector passing the file + // descriptors actually being used. + unexpected_error |= (0 != cyg_hal_sys_close(to_aux_pipe[1])); + unexpected_error |= (0 != cyg_hal_sys_close(from_aux_pipe[0])); + + if (3 != to_aux_pipe[0]) { + if (3 == from_aux_pipe[1]) { + // Because to_aux_pipe[] was set up first it should have received file descriptors 3 and 4. + diag_printf("Internal error: file descriptors have been allocated in an unusual order.\n"); + cyg_hal_sys_exit(1); + } else { + unexpected_error |= (3 != cyg_hal_sys_dup2(to_aux_pipe[0], 3)); + unexpected_error |= (0 != cyg_hal_sys_close(to_aux_pipe[0])); + } + } + if (4 != from_aux_pipe[1]) { + unexpected_error |= (4 != cyg_hal_sys_dup2(from_aux_pipe[1], 4)); + unexpected_error |= (0 != cyg_hal_sys_close(from_aux_pipe[1])); + } + if (unexpected_error) { + diag_printf("Error: internal error in auxiliary process, failed to manipulate pipes.\n"); + cyg_hal_sys_exit(1); + } + // The arguments passed to the auxiliary are mostly those for + // the synthetic target application, except for argv[0] which + // is replaced with the auxiliary's pathname. The latter + // currently holds at least one ../, and cleaning this up is + // useful. + // + // If the argument vector contains -- then that and subsequent + // arguments are not passed to the auxiliary. Instead such + // arguments are reserved for use by the application. + do { + int len; + for (len = 0; '\0' != filename[len]; len++) + ; + found_dotdot = false; + for (i = 0; i < (len - 4); i++) { + if (('/' == filename[i]) && ('.' == filename[i+1]) && ('.' == filename[i+2]) && ('/' == filename[i+3])) { + j = i + 3; + for ( --i; (i >= 0) && ('/' != filename[i]); i--) { + CYG_EMPTY_STATEMENT; + } + if (i >= 0) { + found_dotdot = true; + do { + i++; j++; + filename[i] = filename[j]; + } while ('\0' != filename[i]); + } + } + } + } while(found_dotdot); + + cyg_hal_sys_argv[0] = filename; + + for (i = 1; i < cyg_hal_sys_argc; i++) { + const char* tmp = cyg_hal_sys_argv[i]; + if (('-' == tmp[0]) && ('-' == tmp[1]) && ('\0' == tmp[2])) { + cyg_hal_sys_argv[i] = (const char*) 0; + break; + } + } + cyg_hal_sys_execve(filename, cyg_hal_sys_argv, cyg_hal_sys_environ); + + // An execute error has occurred. Report this here, then exit. The + // parent will detect a close on the pipe without having received + // any data, and it will assume that a suitable diagnostic will have + // been displayed already. + diag_printf("Error: failed to execute the I/O auxiliary.\n"); + cyg_hal_sys_exit(1); + } else { + int rc; + char buf[1]; + + // Still executing the eCos application. + // Do some cleaning-up. + to_aux = to_aux_pipe[1]; + from_aux = from_aux_pipe[0]; + if ((0 != cyg_hal_sys_close(to_aux_pipe[0])) || + (0 != cyg_hal_sys_close(from_aux_pipe[1]))) { + diag_printf("Error: internal error in main process, failed to manipulate pipes.\n"); + cyg_hal_sys_exit(1); + } + + // It is now a good idea to block until the auxiliary is + // ready, i.e. give it a chance to read in its configuration + // files, load appropriate scripts, pop up windows, ... This + // may take a couple of seconds or so. Once the auxiliary is + // ready it will write a single byte down the pipe. This is + // the only time that the auxiliary will write other than when + // responding to a request. + do { + rc = cyg_hal_sys_read(from_aux, buf, 1); + } while (-CYG_HAL_SYS_EINTR == rc); + + if (1 != rc) { + // The auxiliary has not started up successfully, so exit + // immediately. It should have generated appropriate + // diagnostics. + cyg_hal_sys_exit(1); + } + } + + // At this point the auxiliary is up and running. It should not + // generate any interrupts just yet since none of the devices have + // been initialized. Remember that the auxiliary is now running, + // so that the initialization routines for those devices can + // figure out that they should interact with the auxiliary rather + // than attempt anything manually. + synth_auxiliary_running = true; + + // Make sure that the auxiliary is the right version. + synth_auxiliary_xchgmsg(SYNTH_DEV_AUXILIARY, SYNTH_AUXREQ_GET_VERSION, 0, 0, + (const unsigned char*) 0, 0, + &aux_version, (unsigned char*) 0, (int*) 0, 0); + if (SYNTH_AUXILIARY_PROTOCOL_VERSION != aux_version) { + synth_auxiliary_running = false; + diag_printf("Error: an incorrect version of the I/O auxiliary is installed\n" + " Expected version %d, actual version %d\n" + " Installed binary is %s\n", + SYNTH_AUXILIARY_PROTOCOL_VERSION, aux_version, filename); + cyg_hal_sys_exit(1); + } +} + +// Write a request to the I/O auxiliary, and optionally get back a +// reply. The dev_id is 0 for messages intended for the auxiliary +// itself, for example a device instantiation or a request for the +// current interrupt sate. Otherwise it identifies a specific device. +// The request code is specific to the device, and the two optional +// arguments are specific to the request. +void +synth_auxiliary_xchgmsg(int devid, int reqcode, int arg1, int arg2, + const unsigned char* txdata, int txlen, + int* result, + unsigned char* rxdata, int* actual_rxlen, int rxlen) +{ + unsigned char request[SYNTH_REQUEST_LENGTH]; + unsigned char reply[SYNTH_REPLY_LENGTH]; + int rc; + int reply_rxlen; + cyg_bool_t old_isrstate; + + CYG_ASSERT(devid >= 0, "A valid device id should be supplied"); + CYG_ASSERT((0 == txlen) || ((const unsigned char*)0 != txdata), "Data transmits require a transmit buffer"); + CYG_ASSERT((0 == rxlen) || ((unsigned char*)0 != rxdata), "Data receives require a receive buffer"); + CYG_ASSERT((0 == rxlen) || ((int*)0 != result), "If a reply is expected then space must be allocated"); + + // I/O interactions with the auxiliary must be atomic: a context switch in + // between sending the header and the actual data would be bad. + HAL_DISABLE_INTERRUPTS(old_isrstate); + + // The auxiliary should be running for the duration of this + // exchange. However the auxiliary can disappear asynchronously, + // so it is not possible for higher-level code to be sure that the + // auxiliary is still running. + // + // If the auxiliary disappears during this call then usually this + // will cause a SIGCHILD or SIGPIPE, both of which result in + // termination. The exception is when the auxiliary decides to + // shut down stdout for some reason without exiting - that has to + // be detected in the read loop. + if (synth_auxiliary_running) { + request[SYNTH_REQUEST_DEVID_OFFSET + 0] = (devid >> 0) & 0x0FF; + request[SYNTH_REQUEST_DEVID_OFFSET + 1] = (devid >> 8) & 0x0FF; + request[SYNTH_REQUEST_DEVID_OFFSET + 2] = (devid >> 16) & 0x0FF; + request[SYNTH_REQUEST_DEVID_OFFSET + 3] = (devid >> 24) & 0x0FF; + request[SYNTH_REQUEST_REQUEST_OFFSET + 0] = (reqcode >> 0) & 0x0FF; + request[SYNTH_REQUEST_REQUEST_OFFSET + 1] = (reqcode >> 8) & 0x0FF; + request[SYNTH_REQUEST_REQUEST_OFFSET + 2] = (reqcode >> 16) & 0x0FF; + request[SYNTH_REQUEST_REQUEST_OFFSET + 3] = (reqcode >> 24) & 0x0FF; + request[SYNTH_REQUEST_ARG1_OFFSET + 0] = (arg1 >> 0) & 0x0FF; + request[SYNTH_REQUEST_ARG1_OFFSET + 1] = (arg1 >> 8) & 0x0FF; + request[SYNTH_REQUEST_ARG1_OFFSET + 2] = (arg1 >> 16) & 0x0FF; + request[SYNTH_REQUEST_ARG1_OFFSET + 3] = (arg1 >> 24) & 0x0FF; + request[SYNTH_REQUEST_ARG2_OFFSET + 0] = (arg1 >> 0) & 0x0FF; + request[SYNTH_REQUEST_ARG2_OFFSET + 1] = (arg1 >> 8) & 0x0FF; + request[SYNTH_REQUEST_ARG2_OFFSET + 2] = (arg1 >> 16) & 0x0FF; + request[SYNTH_REQUEST_ARG2_OFFSET + 3] = (arg1 >> 24) & 0x0FF; + request[SYNTH_REQUEST_TXLEN_OFFSET + 0] = (txlen >> 0) & 0x0FF; + request[SYNTH_REQUEST_TXLEN_OFFSET + 1] = (txlen >> 8) & 0x0FF; + request[SYNTH_REQUEST_TXLEN_OFFSET + 2] = (txlen >> 16) & 0x0FF; + request[SYNTH_REQUEST_TXLEN_OFFSET + 3] = (txlen >> 24) & 0x0FF; + request[SYNTH_REQUEST_RXLEN_OFFSET + 0] = (rxlen >> 0) & 0x0FF; + request[SYNTH_REQUEST_RXLEN_OFFSET + 1] = (rxlen >> 8) & 0x0FF; + request[SYNTH_REQUEST_RXLEN_OFFSET + 2] = (rxlen >> 16) & 0x0FF; + request[SYNTH_REQUEST_RXLEN_OFFSET + 3] = ((rxlen >> 24) & 0x0FF) | (((int*)0 != result) ? 0x080 : 0); + + // sizeof(synth_auxiliary_request) < PIPE_BUF (4096) so a single write should be atomic, + // subject only to incoming clock or SIGIO or child-related signals. + do { + rc = cyg_hal_sys_write(to_aux, (const void*) &request, SYNTH_REQUEST_LENGTH); + } while (-CYG_HAL_SYS_EINTR == rc); + + // Is there any more data to be sent? + if (0 < txlen) { + int sent = 0; + CYG_LOOP_INVARIANT(synth_auxiliary_running, "The auxiliary cannot just disappear"); + + while (sent < txlen) { + rc = cyg_hal_sys_write(to_aux, (const void*) &(txdata[sent]), txlen - sent); + if (-CYG_HAL_SYS_EINTR == rc) { + continue; + } else if (rc < 0) { + diag_printf("Internal error: unexpected result %d when sending buffer to auxiliary.\n", rc); + diag_printf(" : this application is exiting immediately.\n"); + cyg_hal_sys_exit(1); + } else { + sent += rc; + } + } + CYG_ASSERT(sent <= txlen, "Amount of data sent should not exceed requested size"); + } + + // The auxiliary can now process this entire request. Is a reply expected? + if ((int*)0 != result) { + // The basic reply is also only a small number of bytes, so should be atomic. + do { + rc = cyg_hal_sys_read(from_aux, (void*) &reply, SYNTH_REPLY_LENGTH); + } while (-CYG_HAL_SYS_EINTR == rc); + if (rc <= 0) { + if (rc < 0) { + diag_printf("Internal error: unexpected result %d when receiving data from auxiliary.\n", rc); + } else { + diag_printf("Internal error: EOF detected on pipe from auxiliary.\n"); + } + diag_printf(" : this application is exiting immediately.\n"); + cyg_hal_sys_exit(1); + } + CYG_ASSERT(SYNTH_REPLY_LENGTH == rc, "The correct amount of data should have been read"); + + // Replies are packed in Tcl and assumed to be two 32-bit + // little-endian integers. + *result = (reply[SYNTH_REPLY_RESULT_OFFSET + 3] << 24) | + (reply[SYNTH_REPLY_RESULT_OFFSET + 2] << 16) | + (reply[SYNTH_REPLY_RESULT_OFFSET + 1] << 8) | + (reply[SYNTH_REPLY_RESULT_OFFSET + 0] << 0); + reply_rxlen = (reply[SYNTH_REPLY_RXLEN_OFFSET + 3] << 24) | + (reply[SYNTH_REPLY_RXLEN_OFFSET + 2] << 16) | + (reply[SYNTH_REPLY_RXLEN_OFFSET + 1] << 8) | + (reply[SYNTH_REPLY_RXLEN_OFFSET + 0] << 0); + + CYG_ASSERT(reply_rxlen <= rxlen, "The auxiliary should not be sending more data than was requested."); + + if ((int*)0 != actual_rxlen) { + *actual_rxlen = reply_rxlen; + } + if (reply_rxlen) { + int received = 0; + + while (received < reply_rxlen) { + rc = cyg_hal_sys_read(from_aux, (void*) &(rxdata[received]), reply_rxlen - received); + if (-CYG_HAL_SYS_EINTR == rc) { + continue; + } else if (rc <= 0) { + if (rc < 0) { + diag_printf("Internal error: unexpected result %d when receiving data from auxiliary.\n", rc); + } else { + diag_printf("Internal error: EOF detected on pipe from auxiliary.\n"); + } + diag_printf(" : this application is exiting immediately.\n"); + } else { + received += rc; + } + } + CYG_ASSERT(received == reply_rxlen, "Amount received should be exact"); + } + } + } + + HAL_RESTORE_INTERRUPTS(old_isrstate); +} + +// Instantiate a device. This takes arguments such as +// devs/eth/synth/ecosynth, current, ethernet, eth0, and 200x100 If +// the package and version are NULL strings then the device being +// initialized is application-specific and does not belong to any +// particular package. +int +synth_auxiliary_instantiate(const char* pkg, const char* version, const char* devtype, const char* devinst, const char* devdata) +{ + int result = -1; + char buf[512 + 1]; + const char* str; + int index; + + CYG_ASSERT((const char*)0 != devtype, "Device instantiations must specify a valid device type"); + CYG_ASSERT((((const char*)0 != pkg) && ((const char*)0 != version)) || \ + (((const char*)0 == pkg) && ((const char*)0 == version)), "If a package is specified then the version must be supplied as well"); + + index = 0; + str = pkg; + if ((const char*)0 == str) { + str = ""; + } + while ( (index < 512) && ('\0' != *str) ) { + buf[index++] = *str++; + } + if (index < 512) buf[index++] = '\0'; + str = version; + if ((const char*)0 == str) { + str = ""; + } + while ((index < 512) && ('\0' != *str) ) { + buf[index++] = *str++; + } + if (index < 512) buf[index++] = '\0'; + for (str = devtype; (index < 512) && ('\0' != *str); ) { + buf[index++] = *str++; + } + if (index < 512) buf[index++] = '\0'; + if ((const char*)0 != devinst) { + for (str = devinst; (index < 512) && ('\0' != *str); ) { + buf[index++] = *str++; + } + } + if (index < 512) buf[index++] = '\0'; + if ((const char*)0 != devdata) { + for (str = devdata; (index < 512) && ('\0' != *str); ) { + buf[index++] = *str++; + } + } + if (index < 512) { + buf[index++] = '\0'; + } else { + diag_printf("Internal error: buffer overflow constructing instantiate request for auxiliary.\n"); + diag_printf(" : this application is exiting immediately.\n"); + cyg_hal_sys_exit(1); + } + + if (synth_auxiliary_running) { + synth_auxiliary_xchgmsg(SYNTH_DEV_AUXILIARY, SYNTH_AUXREQ_INSTANTIATE, 0, 0, + buf, index, + &result, + (unsigned char*) 0, (int *) 0, 0); + } + return result; +} + +// ---------------------------------------------------------------------------- +// SIGPIPE and SIGCHLD are special, related to the auxiliary process. +// +// A SIGPIPE can only happen when the application is writing to the +// auxiliary, which only happens inside synth_auxiliary_xchgmsg() (this +// assumes that no other code is writing down a pipe, e.g. to interact +// with a process other than the standard I/O auxiliary). Either the +// auxiliary has explicitly closed the pipe, which it is not supposed +// to do, or more likely it has exited. Either way, there is little +// point in continuing - unless we already know that the system is +// shutting down. +static void +synth_pipe_sighandler(int sig) +{ + CYG_ASSERT(CYG_HAL_SYS_SIGPIPE == sig, "The right signal handler should be invoked"); + if (synth_auxiliary_running) { + synth_auxiliary_running = false; + diag_printf("Internal error: communication with the I/O auxiliary has been lost.\n"); + diag_printf(" : this application is exiting immediately.\n"); + cyg_hal_sys_exit(1); + } +} + +// Similarly it is assumed that there will be no child processes other than +// the auxiliary. Therefore a SIGCHLD indicates that the auxiliary has +// terminated unexpectedly. This is bad: normal termination involves +// the application exiting and the auxiliary terminating in response, +// not the other way around. +// +// As a special case, if it is known that the auxiliary is not currently +// usable then the signal is ignored. This copes with the situation where +// the auxiliary has just been fork()'d but has failed to initialize, or +// alternatively where the whole system is in the process of shutting down +// cleanly and it happens that the auxiliary got there first. +static void +synth_chld_sighandler(int sig) +{ + CYG_ASSERT(CYG_HAL_SYS_SIGCHLD == sig, "The right signal handler should be invoked"); + if (synth_auxiliary_running) { + synth_auxiliary_running = false; + diag_printf("Internal error: the I/O auxiliary has terminated unexpectedly.\n"); + diag_printf(" : this application is exiting immediately.\n"); + cyg_hal_sys_exit(1); + } +} + // ---------------------------------------------------------------------------- // Initialization void -hal_synthetic_target_init(void) +synth_hardware_init(void) { struct cyg_hal_sys_sigaction action; struct cyg_hal_sys_sigset_t blocked; @@ -676,8 +1287,8 @@ hal_synthetic_target_init(void) CYG_FAIL("Failed to install signal handler for SIGIO"); } - // Now install handlers for the various exceptions. For now these - // also operate with unchanged sigprocmasks, allowing nested + // Install handlers for the various exceptions. For now these also + // operate with unchanged sigprocmasks, allowing nested // exceptions. It is not clear that this is entirely a good idea, // but in practice these exceptions will usually be handled by gdb // anyway. @@ -704,9 +1315,13 @@ hal_synthetic_target_init(void) CYG_FAIL("Failed to install signal handler for SIGPIPE"); } action.hal_handler = &synth_chld_sighandler; + action.hal_flags |= CYG_HAL_SYS_SA_NOCLDSTOP | CYG_HAL_SYS_SA_NOCLDWAIT; if (0 != cyg_hal_sys_sigaction(CYG_HAL_SYS_SIGCHLD, &action, (struct cyg_hal_sys_sigaction*) 0)) { CYG_FAIL("Failed to install signal handler for SIGCHLD"); } + + // Start up the auxiliary process. + synth_start_auxiliary(); // All done. At this stage interrupts are still disabled, no ISRs // have been installed, and the clock is not yet ticking. @@ -714,3 +1329,31 @@ hal_synthetic_target_init(void) // and SIGALRM could come in, but nothing has yet been done // to make that happen. } + +// Second-stage hardware init. This is called after all C++ static +// constructors have been run, which should mean that all device +// drivers have been initialized and will have performed appropriate +// interactions with the I/O auxiliary. There should now be a +// message exchange with the auxiliary to let it know that there will +// not be any more devices, allowing it to remove unwanted frames, +// run the user's mainrc.tcl script, and so on. Also this is the +// time that the various toplevels get mapped on to the display. +// +// This request blocks until the auxiliary is ready. The return value +// indicates whether or not any errors occurred on the auxiliary side, +// and that those errors have not been suppressed using --keep-going + +void +synth_hardware_init2(void) +{ + if (synth_auxiliary_running) { + int result; + synth_auxiliary_xchgmsg(SYNTH_DEV_AUXILIARY, SYNTH_AUXREQ_CONSTRUCTORS_DONE, + 0, 0, (const unsigned char*) 0, 0, + &result, + (unsigned char*) 0, (int*) 0, 0); + if ( !result ) { + cyg_hal_sys_exit(1); + } + } +}
new file mode 100644 --- /dev/null +++ b/packages/hal/synth/arch/current/src/synth_protocol.h @@ -0,0 +1,124 @@ +#ifndef CYGONCE_HAL_SYNTH_PROTOCOL_H +#define CYGONCE_HAL_SYNTH_PROTOCOL_H + +//============================================================================= +// +// synth_protocol.h +// +// Generic protocol between eCos and the I/O auxiliary. +// +//============================================================================= +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Bart Veer +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +// at http://sources.redhat.com/ecos/ecos-license/ +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//============================================================================= +//#####DESCRIPTIONBEGIN#### +// +// Author(s): bartv +// Contributors:bartv +// Date: 2002-08-05 +// Purpose: Protocol definitions. +// Description: This header file defines the protocol used between the +// synthetic target HAL and the I/O auxiliary. The relevant +// code in the latter is implemented in Tcl (making +// use of the "binary" command) so this header file is +// not actually used on the host-side. Instead the protocol +// is defined in terms of byte arrays. +// +// The header file is not exported to any higher-level packages +// that wish to communicate with the auxiliary. Instead those +// packages are expected to use the functions synth_auxiliary_xchgmsg() +// and synth_auxiliary_instantiate(). +// +// Usage: #include "synth_protocol.h" +// +//####DESCRIPTIONEND#### +// +//============================================================================= + +// Messages from the eCos synthetic target application to the I/O +// auxiliary are exactly 24 bytes long, consisting of six 32-bit +// little-endian integers. Inside the auxiliary they will be decoded +// using the Tcl binary scan command and the format i6. The top bit +// of RXLEN is overloaded to indicate whether or not a reply is expected +// at all. +#define SYNTH_REQUEST_LENGTH 24 +#define SYNTH_REQUEST_DEVID_OFFSET 0 +#define SYNTH_REQUEST_REQUEST_OFFSET 4 +#define SYNTH_REQUEST_ARG1_OFFSET 8 +#define SYNTH_REQUEST_ARG2_OFFSET 12 +#define SYNTH_REQUEST_TXLEN_OFFSET 16 +#define SYNTH_REQUEST_RXLEN_OFFSET 20 + +// And the response. This consists of two 32-bit little-endian integers, +// a result code and an actual rx_len field. +#define SYNTH_REPLY_LENGTH 8 +#define SYNTH_REPLY_RESULT_OFFSET 0 +#define SYNTH_REPLY_RXLEN_OFFSET 4 + +// Device 0 is special, it is for control messages with the auxiliary +// itself - for example, to instantiate a device. +#define SYNTH_DEV_AUXILIARY 0 + +// Requests intended directly for the auxiliary. + +// Instantiate a device. arg1 and arg2 are ignored. The tx buffer +// holds a string for the given device. The rx buffer will be for a +// single integer, the device id or -1. +#define SYNTH_AUXREQ_INSTANTIATE 0x01 + +// Second-stage initialization, once all eCos device drivers have been +// activated. +#define SYNTH_AUXREQ_CONSTRUCTORS_DONE 0x02 + +// Get the current mask of pending interrupts. arg1 and arg2 are +// ignored, and there is no tx buffer. The reply code holds the irq +// pending mask. Normally there is no additional reply data, but if +// rx_len is non-zero then that indicates that the auxiliary has been +// asked to exit. +#define SYNTH_AUXREQ_GET_IRQPENDING 0x03 + +// Versioning. The core protocol cannot be changed without breaking +// lots of code. However it is still a good idea to allow the eCos +// application to verify that the host-side is the right version, in +// case new requests are added. arg1 and arg2 are ignored, there is no +// tx buffer or reply data, and the reply code holds the version. +#define SYNTH_AUXREQ_GET_VERSION 0x04 + +// The version has to be kept in synch with ecosynth.tcl +#define SYNTH_AUXILIARY_PROTOCOL_VERSION 0x01 + +// The console device is also provided by the architectural package, +// but only implements one function (write some output) so there is no +// need for any function codes. + +#endif // CYGONCE_HAL_SYNTH_PROTOCOL.H
--- a/packages/hal/synth/i386linux/current/ChangeLog +++ b/packages/hal/synth/i386linux/current/ChangeLog @@ -1,3 +1,8 @@ +2002-09-15 Bart Veer <bartv@ecoscentric.com> + + * src/syscall-i386-linux-1.0.S: + Add access system call + 2002-08-04 Bart Veer <bartv@tymora.demon.co.uk> * src/vectors.S (_start):