flash_v2: packages/hal/powerpc/arch/current/src/vectors.S annotate

annotate packages/hal/powerpc/arch/current/src/vectors.S @ 1223:dbcfe4e0dbd2

New platform - TAMS MOAB - and generic changes to support it

author	gthomas
date	Fri, 19 Sep 2003 17:11:18 +0000
parents	aacbd943879a
children	0e2485da1dbc

rev	line source
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	1 ##==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 ## vectors.S
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 ## PowerPC exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	7 ##==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	8 #####ECOSGPLCOPYRIGHTBEGIN####
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	9 ## -------------------------------------------
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	10 ## This file is part of eCos, the Embedded Configurable Operating System.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	11 ## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
423 d175f4be3ab6 Support for application profiling. gthomas parents: 210 diff changeset	12 ## Copyright (C) 2002 Gary Thomas
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	13 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	14 ## eCos is free software; you can redistribute it and/or modify it under
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	15 ## the terms of the GNU General Public License as published by the Free
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	16 ## Software Foundation; either version 2 or (at your option) any later version.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	17 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	18 ## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	19 ## WARRANTY; without even the implied warranty of MERCHANTABILITY or
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	20 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	21 ## for more details.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	22 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	23 ## You should have received a copy of the GNU General Public License along
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	24 ## with eCos; if not, write to the Free Software Foundation, Inc.,
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	25 ## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	26 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	27 ## As a special exception, if other files instantiate templates or use macros
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	28 ## or inline functions from this file, or you compile this file and link it
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	29 ## with other works to produce a work based on this file, this file does not
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	30 ## by itself cause the resulting work to be covered by the GNU General Public
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	31 ## License. However the source code for this file must still be made available
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	32 ## in accordance with section (3) of the GNU General Public License.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	33 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	34 ## This exception does not invalidate any other reasons why a work based on
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	35 ## this file might be covered by the GNU General Public License.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	36 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	37 ## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	38 ## at http://sources.redhat.com/ecos/ecos-license/
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	39 ## -------------------------------------------
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	40 #####ECOSGPLCOPYRIGHTEND####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	41 ##==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 #######DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	44 ## Author(s): nickg, jskov
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	45 ## Contributors: nickg, jskov
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	46 ## Date: 1999-02-20
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	47 ## Purpose: PowerPC exception vectors
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	48 ## Description: This file defines the code placed into the exception
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	49 ## vectors. It also contains the first level default VSRs
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	50 ## that save and restore state for both exceptions and
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	51 ## interrupts.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 ######DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 ##
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	55 ##==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	57 #===========================================================================
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	58 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	59 # The PowerPC exception handling has changed as of version 1.3.1.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	60 # The primary motivation for rewriting the code was to bring it more
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	61 # in line with the other HALs, in particular to allow a RAM application
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	62 # to cleanly take over only a subset of vectors from a running ROM
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	63 # monitor.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	64 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	65 # GDB stubs (and CygMon, should it be ported to PPC) copies
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	66 # exception vector entry handler code to address 0. These vector entry
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	67 # handlers (defined by the exception_vector macro below) compute
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	68 # a vector index into the hal_vsr_table, fetch the pointer, and
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	69 # jump to the HAL vector service routine (VSR).
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	70 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	71 # The hal_vsr_table is located immediately after the vector
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	72 # handlers (at address 0x3000), allowing RAM applications to
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	73 # change VSRs as necessary, while still keeping desired ROM
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	74 # monitor functionality available for debugging.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	75 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	76 # ROM applications can still be configured to leave the vector entry
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	77 # handlers at 0xff000000, but there is at the moment no
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	78 # provision for reclaiming the reserved vector space in RAM to
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	79 # application usage.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	80 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	81 # RAM applications can also be configured to provide exception
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	82 # handlers which are copied to address 0 on startup, thus taking
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	83 # full control of the target.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	84 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	85 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	86 # Default configuration is for RAM applications to rely on an
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	87 # existing ROM monitor to provide debugging functionality, and
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	88 # for ROM applications to copy vectors to address 0.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	89 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	90 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	91 # Unfortunately the new exception scheme is not compatible with the
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	92 # old scheme. Stubs and applications must be compiled using the same
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	93 # scheme (i.e., old binaries will not run with new stubs, and new
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	94 # binaries will not run with old stubs).
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	95 #
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	96 #===========================================================================
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	97
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100 #ifdef CYGPKG_KERNEL
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 #include <pkgconf/kernel.h> // CYGPKG_KERNEL_INSTRUMENT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	103
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	104 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	105 #include <cyg/hal/ppc_regs.h>
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	106
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	107 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	109 // .file "vectors.S"
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	111 .extern hal_interrupt_data
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 .extern hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113 .extern hal_interrupt_objects
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	114 .extern hal_vsr_table
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	116 .extern cyg_hal_invoke_constructors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 .extern cyg_instrument
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	118 .extern cyg_start
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	119 .extern hal_IRQ_init
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	120 .extern hal_MMU_init
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	121 .extern hal_enable_caches
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	122 .extern hal_hardware_init
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	123 .extern initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	125 .extern __bss_start
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	126 .extern __bss_end
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	127 .extern __sbss_start
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	128 .extern __sbss_end
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	130 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 # MSR initialization value
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 # zero all bits except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 # FP = floating point available
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 # ME = machine check enabled
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 # IP = vectors at 0xFFFxxxxx (ROM startup only)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	136 # IR = instruction address translation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	137 # DR = data address translation
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 # RI = recoverable interrupt
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	140 #define CYG_MSR_COMMON (MSR_FP \| MSR_ME \| MSR_RI)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	141
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	142 #if (CYGHWR_HAL_POWERPC_VECTOR_BASE == 0xfff00000)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	143 # define IP_BIT MSR_IP
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	144 #else
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	145 # define IP_BIT 0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146 #endif
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	147
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	148 #ifdef CYGHWR_HAL_POWERPC_ENABLE_MMU
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	149 # define IR_DR_BITS (MSR_IR \| MSR_DR)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	150 #else
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	151 # define IR_DR_BITS 0
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	154 #define CYG_MSR (CYG_MSR_COMMON \| IP_BIT \| IR_DR_BITS)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	155
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	156 # Include variant macros after MSR definition.
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	157 #include <cyg/hal/arch.inc>
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	158 #include <cyg/hal/ppc_offsets.inc>
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	159
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	160
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	161 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 # If the following option is enabled, we only save registers up to R12.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 # The PowerPC ABI defines registers 13..31 as callee saved and thus we do
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 # not need to save them when calling C functions.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166 #ifdef CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	167 # define MAX_SAVE_REG 12
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168 #else
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	169 # define MAX_SAVE_REG 31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	170 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	171
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	172
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	173 #if defined(CYGHWR_HAL_POWERPC_NEED_VECTORS)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	174
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	175 #===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 # Start by defining the exceptions vectors that must be placed at
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	177 # locations 0xFFF00000 or 0x00000000. The following code will normally
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178 # be located at 0xFFF00000 in the ROM. It may optionally be copied out
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	179 # to 0x00000000 if we want to use the RAM vectors. For this reason this code
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	180 # MUST BE POSITION INDEPENDENT.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	182 .section ".vectors","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	183
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 #---------------------------------------------------------------------------
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	185 # Macros for generating an exception vector service routine
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	186
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	187 # Reset vector macro
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	188
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	189 .macro reset_vector name
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190 .p2align 8
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	191 .globl __exception_\name
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	192 __exception_\name:
473 87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	193 #ifdef CYGSEM_HAL_POWERPC_RESET_USES_JUMP
87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	194 bl _start
87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	195 #else
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196 lwi r3,_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 mtlr r3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198 blr
473 87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	199 #endif
87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	200
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	201 .endm
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	203 # Generic vector macro
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	204
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205 .macro exception_vector name
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206 .p2align 8
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 .globl __exception_\name
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208 __exception_\name:
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	209 mtspr SPRG1,r3 # stash some work registers away
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	210 mtspr SPRG2,r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	211 mtspr SPRG3,r5
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	212 mfcr r4 # stash CR
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	213 li r5,__exception_\name-rom_vectors # load low half of vector addr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	214 srwi r5,r5,6 # shift right by 6
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	215 lwi r3,hal_vsr_table # table base
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	216 lwzx r3,r3,r5 # address of vsr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	217 mflr r5 # save link register
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	218 mtlr r3 # put vsr address into it
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	219 li r3,__exception_\name-rom_vectors # reload low half of vector addr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	220 blr # go to common code
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221 .endm
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	223 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224 # Define the exception vectors.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	226 // Some platforms won't let us put the vector code just where we want
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	227 // This macro introduces some lattitude in vector placement
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	228
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	229 #ifdef CYG_HAL_FUDGE_VECTOR_ALIGNMENT
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	230 hal_fudge_vector_alignment
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	231 #endif
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	232
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	233 rom_vectors:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234 # These are the architecture defined vectors that
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 # are always present.
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	236 #ifdef CYG_HAL_RESERVED_VECTOR_00000
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	237 hal_reserved_vector_00000
289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	238 #else
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	239 exception_vector reserved_00000
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	240 #endif
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	241 reset_vector reset
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	242 exception_vector machine_check
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	243 exception_vector data_storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244 exception_vector instruction_storage
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245 exception_vector external
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 exception_vector alignment
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	247 exception_vector program
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 exception_vector floatingpoint_unavailable
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249 exception_vector decrementer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 exception_vector reserved_00a00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 exception_vector reserved_00b00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252 exception_vector system_call
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 exception_vector trace
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 exception_vector floatingpoint_assist
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255 exception_vector reserved_00f00
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	257 # Variants may define extra vectors.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	258 hal_extra_vectors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	260 rom_vectors_end:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	262 #else // CYGHWR_HAL_POWERPC_NEED_VECTORS
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	263
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	264 # When vectors are not included this is the primary entry point.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	265 .globl __exception_reset
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	266 __exception_reset:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	267 lwi r3,_start
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	268 mtlr r3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	269 blr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	270
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	271 #endif // CYGHWR_HAL_POWERPC_NEED_VECTORS
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	272
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	273
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	274
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	275 #===========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	276 # Real startup code. We jump here from the various reset vectors to set up
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	277 # the world.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	278
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280 .globl _start
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	281 _start:
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	282 # Initialize CPU to a post-reset state, ensuring the ground doesn''t
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	283 # shift under us while we try to set things up.
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	284 hal_cpu_init
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 # Set up global offset table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287 lwi r2,_GLOBAL_OFFSET_TABLE_
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289 # set up time base register to zero
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 xor r3,r3,r3
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	291 mtspr TBL_W,r3
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292 xor r4,r4,r4
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	293 mtspr TBU_W,r4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	294
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	295 # Call platform specific hardware initialization
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	296 # This may include memory controller initialization. It is not
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	297 # safe to access RAM until after this point.
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	298 bl hal_hardware_init # this is platform dependent
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	299 .globl _hal_hardware_init_done
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1157 diff changeset	300 _hal_hardware_init_done:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	301
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	302 #if !defined(CYG_HAL_STARTUP_ROM) && defined(CYGSEM_HAL_POWERPC_COPY_VECTORS)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	303 lwi r3,rom_vectors-4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	304 lwi r4,(CYGHWR_HAL_POWERPC_VECTOR_BASE - 4)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	305 lwi r5,rom_vectors_end-4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	306 0: lwzu r0,4(r3)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	307 stwu r0,4(r4)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	308 cmplw r3,r5
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	309 bne 0b
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 149 diff changeset	310 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	311
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 # set up stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 lwi sp,__interrupt_stack
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	314 mtspr SPRG0,sp # save in sprg0 for later use
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	316 # Set up exception handlers and VSR table, taking care not to
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	317 # step on any ROM monitor''s toes.
473 87f3e026b015 PPC60x improvements gthomas parents: 423 diff changeset	318 hal_mon_init
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	319
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	320 #if defined(CYG_HAL_STARTUP_ROM)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322 # Copy data from ROM to ram
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 lwi r3,__rom_data_start # r3 = rom start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 lwi r4,__ram_data_start # r4 = ram start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 lwi r5,__ram_data_end # r5 = ram end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 cmplw r4,r5 # skip if no data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 beq 2f
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	331 lwz r0,0(r3) # get word from ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	332 stw r0,0(r4) # store in RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	333 addi r3,r3,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	334 addi r4,r4,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	335 cmplw r4,r5 # compare
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	336 blt 1b # loop if not yet done
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337 2:
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	338 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	339
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	340 # clear BSS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 lwi r3,__bss_start # r3 = start
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	342 lwi r4,__bss_end # r4 = end
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	343 li r0,0 # r0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344 cmplw r3,r4 # skip if no bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 beq 2f
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	346
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	347 1: stw r0,0(r3) # store zero
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	348 addi r3,r3,4 # increment by 1 word
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 cmplw r3,r4 # compare
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	350 blt 1b # loop if not yet done
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	351 2:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	353 # clear SBSS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	354 lwi r3,__sbss_start # r3 = start
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355 lwi r4,__sbss_end # r4 = end
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	356 cmplw r3,r4 # skip if no sbss
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	357 beq 2f
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	358
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	359 1: stw r0,0(r3) # store zero
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	360 addi r3,r3,4 # increment by 1 word
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	361 cmplw r3,r4 # compare
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	362 blt 1b # loop if not yet done
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	363 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	364
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	365 # It is now safe to call C functions which may rely on initialized
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	366 # data.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	367
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	368 # Set up stack for calls to C code.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	369 subi sp,sp,12 # make space on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	370 li r0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	371 stw r0,0(sp) # clear back chain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	372 stw r0,8(sp) # zero return pc
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	373 stwu sp,-CYGARC_PPC_STACK_FRAME_SIZE(sp) # create new stack frame
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	374
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	375 # Variant HALs may need to do something special before we continue
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	376 bl hal_variant_init
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	377
101 c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	378 # Platform initialization
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	379 bl hal_platform_init
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	380
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	381 # MMU and cache are controlled by the same option since caching
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	382 # on the PPC does not make sense without the MMU to mark regions
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	383 # which should not be cached.
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	384 #ifdef CYGHWR_HAL_POWERPC_ENABLE_MMU
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	385 # Initialize MMU.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	386 bl hal_MMU_init
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	387
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	388 # Enable MMU so we can safely enable caches.
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	389 lwi r3,CYG_MSR # interrupts enabled later
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	390 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	391 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	392 sync
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	393
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	394 # Enable caches
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	395 bl hal_enable_caches
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	396 #endif // CYGHWR_HAL_POWERPC_ENABLE_MMU
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397
149 52c99470ec11 Merge from eCos master repository on 2001-01-19-06:43:03-GMT jlarmour parents: 138 diff changeset	398 # set up platform specific interrupt environment
52c99470ec11 Merge from eCos master repository on 2001-01-19-06:43:03-GMT jlarmour parents: 138 diff changeset	399 bl hal_IRQ_init
52c99470ec11 Merge from eCos master repository on 2001-01-19-06:43:03-GMT jlarmour parents: 138 diff changeset	400
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	401 # call c++ constructors
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	402 bl cyg_hal_invoke_constructors
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	403
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	404 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	405 bl initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	406 #endif
101 c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	407 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	408 \|\| defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	409 .extern hal_ctrlc_isr_init
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	410 bl hal_ctrlc_isr_init
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	411 #endif
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	412
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 bl cyg_start # call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414 9:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	415 b 9b # if we return, loop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	416
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	417 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	418 # This code handles the common part of all exception handlers.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	419 # It saves the machine state onto the stack and then calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	420 # a "C" routine to do the rest of the work. This work may result
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	421 # in thread switches, and changes to the saved state. When we return
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	422 # here the saved state is restored and execution is continued.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	423
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	424 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	425
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	426 .globl cyg_hal_default_exception_vsr
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	427 cyg_hal_default_exception_vsr:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	428
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	429 # We come here with all register containing their
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	430 # pre-exception values except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	431 # R3 = ls 16 bits of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	432 # R4 = saved CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	433 # R5 = saved LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	434 # LR = VSR address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	435 # SPRG1 = old R3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	436 # SPRG2 = old R4
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	437 # SPRG3 = old R5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	438 # SRR0 = old PC
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	439 # SRR1 = old MSR and the exception cause (the POW state is lost!)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	440
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	441 subi sp,sp,CYGARC_PPC_EXCEPTION_DECREMENT
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	442 # leave space for registers and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	443 # a safety margin
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	444 #ifdef CYGPKG_HAL_POWERPC_PPC40x
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	445 // The caches on this processor are always enabled when the MMU is on
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	446 // (and disabled when off). Thus we need to be careful about cache
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	447 // polution and staleness when changing the MMU state.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	448 // At this point, the MMU is off due to the exception. We need to
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	449 // flush the part of the cache which may be touched before the MMU
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	450 // is reenabled so that memory will be consistent when that happens.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	451 // Of course, this is complicated by the fact that there are no "free"
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	452 // registers at this point in the code.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	453 dcbf 0,sp // Flushes first line
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	454 stw r3,0(sp) // This is now safe
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	455 li r3,CYGARC_PPCREG_VECTOR // Flush lines which will be changed
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	456 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	457 li r3,CYGARC_PPCREG_CR
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	458 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	459 li r3,CYGARC_PPCREG_LR
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	460 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	461 lwz r3,0(sp) // Restore register
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	462 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	463
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	464 # First, save away some registers
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	465 stw r3,CYGARC_PPCREG_VECTOR(sp) # stash vector
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	466 stw r4,CYGARC_PPCREG_CR(sp) # stash CR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	467 stw r5,CYGARC_PPCREG_LR(sp) # stash LR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	468
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	469 #ifdef CYGDBG_HAL_POWERPC_FRAME_WALLS
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	470 # Mark this fram as an Exception frame
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	471 lwi r3,0xDDDDDDE0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	472 stw r3,CYGARC_PPCREG_WALL_HEAD(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	473 lwi r3,0xDDDDDDE1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	474 stw r3,CYGARC_PPCREG_WALL_TAIL(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	475 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	476
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1157 diff changeset	477 #ifdef CYGHWR_HAL_POWERPC_ENABLE_MMU
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	478 # Enable MMU.
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	479 lwi r3,CYG_MSR
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	480 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	481 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	482 sync
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1157 diff changeset	483 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	484
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	485 mfspr r3,SPRG1 # save original R3
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	486 stw r3,CYGARC_PPCREG_REGS+3*4(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	487 mfspr r4,SPRG2 # save original R4
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	488 stw r4,CYGARC_PPCREG_REGS+4*4(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	489 mfspr r5,SPRG3 # save original R5
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	490 stw r5,CYGARC_PPCREG_REGS+5*4(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	491
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	492 stw r0,CYGARC_PPCREG_REGS+0*4(sp) # save R0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	493 stw r2,CYGARC_PPCREG_REGS+2*4(sp) # save R2
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	494
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	495 mr r3,sp # recreate original SP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	496 addi r3,r3,CYGARC_PPC_EXCEPTION_DECREMENT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	497 stw r3,CYGARC_PPCREG_REGS+1*4(sp) # and save it in state
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	498
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	499 # Save registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	500 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501 .rept MAX_SAVE_REG+1-6
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	502 stw _reg,(CYGARC_PPCREG_REGS+_reg*4)(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	503 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	504 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	505
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	506 # Save registers used in vsr (r14+r15)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	507 stw r14,(CYGARC_PPCREG_REGS+14*4)(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	508 stw r15,(CYGARC_PPCREG_REGS+15*4)(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	509
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	510 # get remaining family CPU registers
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	511 mfxer r3
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	512 mfctr r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	513 mfsrr0 r5
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	514 mfsrr1 r6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	515 # and store them
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	516 stw r3,CYGARC_PPCREG_XER(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	517 stw r4,CYGARC_PPCREG_CTR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	518 stw r5,CYGARC_PPCREG_PC(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	519 stw r6,CYGARC_PPCREG_MSR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	520
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	521 # Save variant registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	522 hal_variant_save sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	523
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	524 # Save FPU registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	525 hal_fpu_save sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	526
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	527 # The entire CPU state is now stashed on the stack,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	528 # call into C to do something with it.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	529
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	530 mr r3,sp # R3 = register dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	531
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	532 subi sp,sp,CYGARC_PPC_STACK_FRAME_SIZE # make a null frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	533
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	534 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	535 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	536 stw r0,8(sp) # return pc = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	537
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	538 stwu sp,-CYGARC_PPC_STACK_FRAME_SIZE(sp) # create new stack frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	539 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	540
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	541 lwi r5,restore_state # get return link
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	542 mtlr r5 # to link register
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	543
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	544 .extern cyg_hal_exception_handler
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	545 b cyg_hal_exception_handler # call C code, r3 = registers
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	546
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	547 # When the call returns it will go to restore_state below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	548
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	549
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	550 ##--------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	551 ## The following macros are defined depending on whether the Interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	552 ## system is using isr tables or chaining, and depending on the interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	553 ## controller in the system.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	554
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	555 #ifndef CYGPKG_HAL_POWERPC_INTC_DEFINED
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	556
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	557 ## This is the simple version. No interrupt controller, CYGARC_PPCREG_VECTOR
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	558 ## is updated with the decoded interrupt vector. Isr tables/chaining
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	559 ## use same interrupt decoder.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	560 ## Bit 21 biffers between decrementer (0) and external (1).
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	561
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	562 # decode the interrupt
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	563 .macro hal_intc_decode dreg,state
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	564 lwz \dreg,CYGARC_PPCREG_VECTOR(\state) # retrieve vector number,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	565 rlwinm \dreg,\dreg,22,31,31 # isolate bit 21 and update
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	566 stw \dreg,CYGARC_PPCREG_VECTOR(\state) # vector in state frame.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	567 slwi \dreg,\dreg,2 # convert to word offset.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	568 .endm
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	569
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: 70 diff changeset	570 #endif // CYGPKG_HAL_POWERPC_INTC_DEFINED
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	571
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	572 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	573 # Common interrupt handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	574
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	575 .globl cyg_hal_default_interrupt_vsr
c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	576 cyg_hal_default_interrupt_vsr:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	577
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	578 # We come here with all register containing their
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	579 # pre-exception values except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	580 # R3 = ls 16 bits of vector address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	581 # R4 = saved CR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	582 # R5 = saved LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	583 # LR = VSR address
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	584 # SPRG1 = old R3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	585 # SPRG2 = old R4
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	586 # SPRG3 = old R5
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	587 # SRR0 = old PC
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	588 # SRR1 = old MSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	589
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	590
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	591 subi sp,sp,CYGARC_PPC_EXCEPTION_DECREMENT
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	592 # leave space for registers and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	593 # a safety margin
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	594 #ifdef CYGPKG_HAL_POWERPC_PPC40x
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	595 // The caches on this processor are always enabled when the MMU is on
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	596 // (and disabled when off). Thus we need to be careful about cache
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	597 // polution and staleness when changing the MMU state.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	598 // At this point, the MMU is off due to the exception. We need to
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	599 // flush the part of the cache which may be touched before the MMU
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	600 // is reenabled so that memory will be consistent when that happens.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	601 // Of course, this is complicated by the fact that there are no "free"
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	602 // registers at this point in the code.
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	603 dcbf 0,sp // Flushes first line
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	604 stw r3,0(sp) // This is now safe
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	605 li r3,CYGARC_PPCREG_VECTOR // Flush lines which will be changed
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	606 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	607 li r3,CYGARC_PPCREG_CR
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	608 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	609 li r3,CYGARC_PPCREG_LR
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	610 dcbf r3,sp
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	611 lwz r3,0(sp) // Restore register
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	612 #endif
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 105 diff changeset	613
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	614 stw r3,CYGARC_PPCREG_VECTOR(sp) # stash vector
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	615 stw r4,CYGARC_PPCREG_CR(sp) # stash CR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	616 stw r5,CYGARC_PPCREG_LR(sp) # stash LR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	617
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	618 #ifdef CYGDBG_HAL_POWERPC_FRAME_WALLS
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	619 # Mark this fram as an 1nterrupt frame
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	620 lwi r3,0xDDDDDD10
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	621 stw r3,CYGARC_PPCREG_WALL_HEAD(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	622 lwi r3,0xDDDDDD11
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	623 stw r3,CYGARC_PPCREG_WALL_TAIL(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	624 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	625
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1157 diff changeset	626 #ifdef CYGHWR_HAL_POWERPC_ENABLE_MMU
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	627 # Enable MMU.
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	628 lwi r3,CYG_MSR
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	629 sync
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	630 mtmsr r3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	631 sync
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1157 diff changeset	632 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	633
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	634 mfspr r3,SPRG1 # save original R3
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	635 stw r3,CYGARC_PPCREG_REGS+3*4(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	636 mfspr r4,SPRG2 # save original R4
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	637 stw r4,CYGARC_PPCREG_REGS+4*4(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	638 mfspr r5,SPRG3 # save original R5
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	639 stw r5,CYGARC_PPCREG_REGS+5*4(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	640
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	641 stw r0,CYGARC_PPCREG_REGS+0*4(sp) # save R0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	642 stw r2,CYGARC_PPCREG_REGS+2*4(sp) # save R2
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	643
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	644 mr r3,sp # recreate original SP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	645 addi r3,r3,CYGARC_PPC_EXCEPTION_DECREMENT
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	646 stw r3,CYGARC_PPCREG_REGS+1*4(sp) # and save it in state
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	647
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	648 # Save registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	649 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	650 .rept MAX_SAVE_REG+1-6
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	651 stw _reg,(CYGARC_PPCREG_REGS+_reg*4)(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	652 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	653 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	654
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	655 # Save registers used in vsr (r14+r15)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	656 stw r14,CYGARC_PPCREG_REGS+14*4(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	657 stw r15,CYGARC_PPCREG_REGS+15*4(sp)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	658
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	659 # get remaining family CPU registers
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	660 mfxer r3
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	661 mfctr r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	662 mfsrr0 r5
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	663 mfsrr1 r6
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	664
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	665 # and store them
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	666 stw r3,CYGARC_PPCREG_XER(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	667 stw r4,CYGARC_PPCREG_CTR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	668 stw r5,CYGARC_PPCREG_PC(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	669 stw r6,CYGARC_PPCREG_MSR(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	670
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	671 # Save variant registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	672 hal_variant_save sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	673
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	674 # Save FPU registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	675 hal_fpu_save sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	676
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	677 # The entire CPU state is now stashed on the stack,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	678 # increment the scheduler lock and call the ISR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	679 # for this vector.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	680
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	681 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	682 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	683 lwi r3,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	684 lwz r4,0(r3)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	685 addi r4,r4,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	686 stw r4,0(r3)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	687 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	688
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	689 mr r14,sp # r14 = register dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	690
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	691 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	692 lwi r3,__interrupt_stack # stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	693 lwi r4,__interrupt_stack_base # stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	694 sub. r5,sp,r4 # sp - base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	695 blt 1f # if < 0 - not on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	696 sub. r5,r3,sp # top - sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	697 bgt 2f # if > 0 - already on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	698
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	699 1: mr sp,r3 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	700
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	701 2: stwu r14,-4(sp) # save old SP on stack
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	702
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	703 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	704
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	705 subi sp,sp,CYGARC_PPC_STACK_FRAME_SIZE # make a null frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	706
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	707 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	708 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	709 stw r0,8(sp) # return pc = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	710
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	711 stwu sp,-CYGARC_PPC_STACK_FRAME_SIZE(sp) # create new stack frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	712 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	713
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	714 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	715
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	716 lwi r3,0x0301 # r3 = type = INTR,RAISE
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	717 lwz r4,CYGARC_PPCREG_VECTOR(r14) # arg1 = vector address
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	718 srwi r4,r4,8 # arg1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	719 xor r5,r5,r5 # arg2 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	720 bl cyg_instrument # call instrument function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	721
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	722 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	723
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 68 diff changeset	724 hal_intc_decode r15,r14 # get table index
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	725
101 c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	726 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	727 \|\| defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	728 # If we are supporting Ctrl-C interrupts from GDB, we must squirrel
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	729 # away a pointer to the save interrupt state here so that we can
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	730 # plant a breakpoint at some later time.
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	731
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	732 .extern hal_saved_interrupt_state
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	733 lwi r3,hal_saved_interrupt_state
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	734 stw r14,0(r3)
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	735
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	736 #endif
c37d3a9e1b28 Merge from eCos master repository on 2000-06-16-07:47:03-BST jlarmour parents: 82 diff changeset	737
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	738 #ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	739
68 f74b2666b30d Merge from eCos master repository on 2000-02-04-07:47:04-GMT jlarmour parents: 66 diff changeset	740 #ifdef CYGPKG_HAL_POWERPC_MPC8xx
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	741 # The CPM controller allows nested interrupts. However,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	742 # it sits on the back of the SIU controller which has no
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	743 # HW support for this. In effect, SW masking of lower
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	744 # priority IRQs in the SIU would be required for this to work.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	745 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	746
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	747 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	748
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	749 lwz r3,CYGARC_PPCREG_VECTOR(r14) # retrieve decoded vector #
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	750
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	751 lwi r6,hal_interrupt_handlers # get interrupt handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	752 lwzx r6,r6,r15 # load routine pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	753
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	754 lwi r4,hal_interrupt_data # get interrupt data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	755 lwzx r4,r4,r15 # load data pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	756 # R4 = data argument
423 d175f4be3ab6 Support for application profiling. gthomas parents: 210 diff changeset	757 mr r5,r14 # R5 = saved registers
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	758
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	759 mtctr r6 # put isr address in ctr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	760
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	761 bctrl # branch to ctr reg and link
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	762
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	763 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	764
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	765 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	766 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	767 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	768 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	769 # contain the sp we need to go back to here, just pop it off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	770 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	771
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	772
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	773 lwz sp,CYGARC_PPC_STACK_FRAME_SIZE2(sp) # sp = sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	774
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	775 subi sp,sp,CYGARC_PPC_STACK_FRAME_SIZE # make a null frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	776
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	777 li r0,0 # R0 = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	778 stw r0,0(sp) # backchain = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	779 stw r0,8(sp) # return pc = 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	780
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	781 stwu sp,-CYGARC_PPC_STACK_FRAME_SIZE(sp) # create new stack frame
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	782 # where C code can save LR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	783 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	784
1157 aacbd943879a * src/vectors.S (cyg_hal_default_interrupt_vsr): Removed ifdef on nickg parents: 473 diff changeset	785 # On return r3 bit 1 will indicate whether a DSR is
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	786 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	787 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	788 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	789
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	790 # Note that r14 and r15 are defined to be preserved across
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	791 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	792 # the register dump and the vector number respectively.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	793
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	794 lwi r4,hal_interrupt_objects # get interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	795 lwzx r4,r4,r15 # load object pointer
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	796 mr r5,r14 # arg3 = saved register dump
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	797
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	798 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	799 bl interrupt_end # call into C to finish off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	800
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	801 restore_state:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	802 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	803
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	804 # retrieve CPU state pointer
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	805 addi sp,sp,CYGARC_PPC_STACK_FRAME_SIZE*2
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	806
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	807 # Restore FPU registers
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	808 hal_fpu_load sp
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	809
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	810 # Restore variant registers
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 76 diff changeset	811 hal_variant_load sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	812
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	813 # get sprs we want to restore
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	814 # stuff some of them into the CPU
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	815 lwz r3,CYGARC_PPCREG_XER(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	816 lwz r4,CYGARC_PPCREG_LR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	817 lwz r5,CYGARC_PPCREG_CTR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	818 mtxer r3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	819 mtlr r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	820 mtctr r5
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	821
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	822 # Restore registers used in vsr (r14+r15)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	823 lwz r14,CYGARC_PPCREG_REGS+14*4(r1)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	824 lwz r15,CYGARC_PPCREG_REGS+15*4(r1)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	825
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	826 # restore registers r6..r12/r31
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	827 .set _reg,6
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	828 .rept MAX_SAVE_REG+1-6
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	829 lwz _reg,(CYGARC_PPCREG_REGS+_reg*4)(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	830 .set _reg,_reg+1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	831 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	832
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	833 hal_cpu_int_disable
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	834
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	835 # restore R0 and R2
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	836 lwz r0,CYGARC_PPCREG_REGS+0*4(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	837 lwz r2,CYGARC_PPCREG_REGS+2*4(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	838
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	839 # Here all the registers are loaded except
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	840 # sp = HAL_SavedRegisters
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	841 # r3 = ccr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	842 # r4 = srr0 = pc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	843 # r5 = srr1 = msr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	844 #
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	845 # We have to disable interrupts while srr0 and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	846 # srr1 are loaded, since another interrupt will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	847 # destroy them.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	848
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	849 lwz r3,CYGARC_PPCREG_CR(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	850 lwz r4,CYGARC_PPCREG_PC(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	851 lwz r5,CYGARC_PPCREG_MSR(sp)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	852 mtcr r3 # set ccr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	853 mtsrr0 r4 # load old pc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	854 mtsrr1 r5 # load old msr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	855
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	856 #ifdef CYGDBG_HAL_POWERPC_FRAME_WALLS
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	857 # Mark this frame as (almost) dead.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	858 lwi r3,0xDDDDDDD0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	859 stw r3,CYGARC_PPCREG_WALL_HEAD(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	860 lwi r3,0xDDDDDDD1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	861 stw r3,CYGARC_PPCREG_WALL_TAIL(sp)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	862 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	863
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	864 lwz r3,CYGARC_PPCREG_REGS+3*4(sp) # load r3 value
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	865 lwz r4,CYGARC_PPCREG_REGS+4*4(sp) # load r4 value
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	866 lwz r5,CYGARC_PPCREG_REGS+5*4(sp) # load r5 value
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	867 lwz sp,CYGARC_PPCREG_REGS+1*4(sp) # restore sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	868
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	869 sync # settle things down
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	870 isync
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	871 rfi # and return
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	872
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	873
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	874
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	875 ##-----------------------------------------------------------------------------
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	876 ## Execute pending DSRs on the interrupt stack with interrupts enabled.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	877 ## Note: this can only be called from code running on a thread stack
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	878
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	879 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	880 .extern cyg_interrupt_call_pending_DSRs
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	881
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	882 FUNC_START(hal_interrupt_stack_call_pending_DSRs)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	883 # Change to interrupt stack, save state and set up stack for
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	884 # calls to C code.
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	885 mr r3,sp
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	886 lwi r4,__interrupt_stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	887 subi r4,r4,24 # make space on stack
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	888 mr sp,r4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	889 stw r3,12(sp) # save old sp
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	890 mfmsr r3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	891 stw r3,16(sp) # save old MSR
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	892 mflr r3
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	893 stw r3,20(sp) # save old LR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	894
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	895 li r0,0
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	896 stw r0,0(sp) # clear back chain
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	897 stw r0,8(sp) # zero return pc
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	898
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	899 hal_cpu_int_enable
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	900
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	901 # Call into kernel which will execute DSRs
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	902 stwu sp,-CYGARC_PPC_STACK_FRAME_SIZE(sp)
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	903 bl cyg_interrupt_call_pending_DSRs
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	904 addi sp,sp,CYGARC_PPC_STACK_FRAME_SIZE
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	905
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	906 lwz r3,20(sp) # restore LR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	907 mtlr r3
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	908 lwz r5,12(sp) # get SP from saved state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	909 lwz r3,16(sp) # restore interrupt setting
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	910 hal_cpu_int_merge r3
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	911
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	912 mr sp,r5 # restore stack pointer
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	913 blr # and return to caller
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 72 diff changeset	914 #endif
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	915
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	916 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	917 ## Temporary interrupt stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	918
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	919 .section ".bss"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	920
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	921 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	922 .global cyg_interrupt_stack_base
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	923 cyg_interrupt_stack_base:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	924 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	925 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	926 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	927 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	928 .balign 16
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	929 .global cyg_interrupt_stack
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	930 cyg_interrupt_stack:
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	931 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	932
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	933 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	934
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	935 #---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	936 # end of vectors.S

Mercurial > flash_v2

annotate packages/hal/powerpc/arch/current/src/vectors.S @ 1223:dbcfe4e0dbd2