ecos: packages/hal/arm/arch/current/src/vectors.S annotate

annotate packages/hal/arm/arch/current/src/vectors.S @ 1307:1750695510ac

Fix exception debug in THUMB mode - from Thomas Koeller

author	gthomas
date	Tue, 14 Oct 2003 13:51:48 +0000
parents	04b94baa3683
children	8758da1a0278

rev	line source
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1 // #========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	2 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	3 // # vectors.S
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	4 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	5 // # ARM exception vectors
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	6 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	7 // #========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	12 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	14 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	16 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	20 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	21 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	22 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	23 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	25 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	26 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	27 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	28 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	29 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	30 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	31 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	32 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	33 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	34 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	37 // at http://sources.redhat.com/ecos/ecos-license/
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	38 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	39 //####ECOSGPLCOPYRIGHTEND####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	40 // #========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	41 // ######DESCRIPTIONBEGIN####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	42 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	43 // # Author(s): nickg, gthomas
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	44 // # Contributors: nickg, gthomas
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	45 // # Date: 1999-02-20
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	46 // # Purpose: ARM exception vectors
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	47 // # Description: This file defines the code placed into the exception
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	48 // # vectors. It also contains the first level default VSRs
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	49 // # that save and restore state for both exceptions and
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	50 // # interrupts.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	51 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	52 // #####DESCRIPTIONEND####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	53 // #
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	54 // #========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	55
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	56 #include <pkgconf/hal.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	57 #include <pkgconf/hal_arm.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	58 #ifdef CYGPKG_KERNEL // no CDL yet
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	59 #include <pkgconf/kernel.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	60 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	61 # undef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 4 diff changeset	62 # undef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	63 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	64 #include <cyg/hal/hal_platform_setup.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	65
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	66 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	67 // The CDL should enforce this
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	68 #undef CYGHWR_HAL_ARM_DUMP_EXCEPTIONS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	69 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	70
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	71 #include "arm.inc"
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	72
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	73 #ifdef __thumb__
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	74 // Switch to thumb mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	75 #define THUMB_MODE(_r_, _l_) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	76 ldr _r_,=_l_ ## f+1 ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	77 bx _r_ ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	78 .pool ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	79 .code 16 ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	80 .thumb_func ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	81 _l_:
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	82
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	83 // Switch to ARM mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	84 #define ARM_MODE(_r_, _l_) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	85 ldr _r_,=_l_ ## f ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	86 bx _r_ ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	87 .pool ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	88 .code 32 ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	89 _l_:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	90
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	91 // Function definition, start executing body in ARM mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	92 #define FUNC_START_ARM(_name_, _r_) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	93 .code 16 ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	94 .thumb_func ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	95 .globl _name_ ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	96 _name_: ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	97 ldr _r_,=_name_ ## _ARM ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	98 bx _r_ ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	99 .code 32 ;\
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	100 _name_ ## _ARM:
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	101
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	102 #else
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	103
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	104 // Switch to thumb mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	105 #define THUMB_MODE(_r_, _l_)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	106
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	107 // Switch to ARM mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	108 #define ARM_MODE(_r_, _l_)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	109
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	110 // Function definition, start executing body in ARM mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	111 #define FUNC_START_ARM(_name_, _r_) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	112 .globl _name_; \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	113 _name_:
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	114
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	115 #endif
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	116
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	117
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	118
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	119 #define PTR(name) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	120 .##name: .word name
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	121
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	122 // CYGHWR_HAL_ROM_VADDR is used when compiling for a different location
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	123 // from the base of ROM. hal_platform_setup.h might define it. For
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	124 // example, if flash is from 0x50000000 upwards (as on SA11x0), and we are
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	125 // to execute at 0x50040000, then we want the reset vector to point to
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	126 // 0x0004pqrs - the unmapped ROM address of the code - rather than
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	127 // 0x0000pqrs, which is the offset into our flash block.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	128 //
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	129 // But usually it's not defined, so the behaviour is the obvious.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	130
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	131 #ifndef UNMAPPED
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	132 #ifdef CYGHWR_HAL_ARM_HAS_MMU
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	133 # ifndef CYGHWR_HAL_ROM_VADDR
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	134 # define CYGHWR_HAL_ROM_VADDR __exception_handlers
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	135 # endif
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	136 # define UNMAPPED(x) ((x)-CYGHWR_HAL_ROM_VADDR)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	137 #else
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	138 # define UNMAPPED(x) (x)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	139 #endif
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	140 #endif
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	141
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	142 #define UNMAPPED_PTR(name) \
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	143 .##name: .word UNMAPPED(name)
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	144
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	145 // .file "vectors.S"
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	146
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	147
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	148 // CYGHWR_LED_MACRO can be defined in hal_platform_setup.h. It's free to
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	149 // use r0+r1. Argument is in "\x" - cannot use macro arguments since the
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	150 // macro may contain #-chars and use of arguments cause these to be
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	151 // interpreted as CPP stringify operators.
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	152 // See example in PID hal_platform_setup.h.
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	153 #ifndef CYGHWR_LED_MACRO
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	154 #define CYGHWR_LED_MACRO
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	155 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	156
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	157 .macro LED x
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	158 CYGHWR_LED_MACRO
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	159 .endm
306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	160
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	161
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	162 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	163 // Hardware exception vectors.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	164 // This entire section will be copied to location 0x0000 at startup time.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	165 //
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	166 .code 32
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	167 .section ".vectors","ax"
160 0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	168
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	169 // This macro allows platforms to add their own code at the very start of
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	170 // the image. This may be required in some circumstances where eCos ROM
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	171 // based code does not run immediately upon reset and/or when some sort of
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	172 // special header is required at the start of the image.
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	173 #ifdef PLATFORM_PREAMBLE
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	174 PLATFORM_PREAMBLE
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	175 #endif
0d0f03f76f6a Merge from eCos master repository on 2001-06-01-18:52:13-BST jlarmour parents: 159 diff changeset	176
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	177 .global __exception_handlers
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	178 __exception_handlers:
159 511f4dc167f6 Merge from eCos master repository on 2001-05-18-01:30:05-BST jlarmour parents: 158 diff changeset	179 #ifdef CYGSEM_HAL_ROM_RESET_USES_JUMP
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	180 // Assumption: ROM code has these vectors at the hardware reset address.
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	181 // A simple jump removes any address-space dependencies [i.e. safer]
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	182 b reset_vector // 0x00
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	183 #else
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	184 ldr pc,.reset_vector // 0x00
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	185 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	186 ldr pc,.undefined_instruction // 0x04
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	187 ldr pc,.software_interrupt // 0x08 start && software int
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	188 ldr pc,.abort_prefetch // 0x0C
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	189 ldr pc,.abort_data // 0x10
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	190 .word 0 // unused
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	191 ldr pc,.IRQ // 0x18
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	192 ldr pc,.FIQ // 0x1C
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	193
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	194 // The layout of these pointers should match the vector table above since
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	195 // they are copied in pairs.
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	196 .global vectors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	197 vectors:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	198 UNMAPPED_PTR(reset_vector) // 0x20
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	199 PTR(undefined_instruction) // 0x24
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	200 PTR(software_interrupt) // 0x28
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	201 PTR(abort_prefetch) // 0x2C
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	202 PTR(abort_data) // 0x30
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	203 .word 0 // 0x34
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	204 PTR(IRQ) // 0x38
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	205 PTR(FIQ) // 0x3c
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	206 #ifdef CYGSEM_HAL_ARM_PID_ANGEL_BOOT
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 24 diff changeset	207 PTR(start) // This is copied to 0x28 for bootup // 0x40
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	208 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	209 // location 0x40 is used for storing DRAM size if known
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	210 // for some platforms.
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	211
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	212 //
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	213 // "Vectors" - fixed location data items
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	214 // This section contains any data which might be shared between
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	215 // an eCos application and any other environment, e.g. the debug
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	216 // ROM.
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	217 //
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	218 .section ".fixed_vectors"
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	219 // Interrupt/exception VSR pointers
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	220 .globl hal_vsr_table
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	221 hal_vsr_table:
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	222 .rept 8
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	223 .long 0
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	224 .endr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	225
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	226 .globl hal_dram_size
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	227 hal_dram_size:
148 8f2f7615e727 Merge from eCos master repository on 2001-01-12-06:43:03-GMT jlarmour parents: 145 diff changeset	228 .long 0
8f2f7615e727 Merge from eCos master repository on 2001-01-12-06:43:03-GMT jlarmour parents: 145 diff changeset	229 // what, if anything, hal_dram_type means is up to the platform
8f2f7615e727 Merge from eCos master repository on 2001-01-12-06:43:03-GMT jlarmour parents: 145 diff changeset	230 .globl hal_dram_type
8f2f7615e727 Merge from eCos master repository on 2001-01-12-06:43:03-GMT jlarmour parents: 145 diff changeset	231 hal_dram_type:
8f2f7615e727 Merge from eCos master repository on 2001-01-12-06:43:03-GMT jlarmour parents: 145 diff changeset	232 .long 0
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	233
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	234 .balign 16
110 84e4bde58b26 Merge from eCos master repository on 2000-07-14-22:00:02-BST jlarmour parents: 108 diff changeset	235 #ifdef CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT
84e4bde58b26 Merge from eCos master repository on 2000-07-14-22:00:02-BST jlarmour parents: 108 diff changeset	236 // Vectors used to communicate between eCos and ROM environments
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	237 .globl hal_virtual_vector_table
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	238 hal_virtual_vector_table:
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	239 .rept CYGNUM_CALL_IF_TABLE_SIZE
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	240 .long 0
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	241 .endr
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	242 #endif
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	243
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	244 #ifdef CYGHWR_HAL_ARM_ICE_THREAD_SUPPORT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	245 .balign 16 // Should be at 0x50
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	246 ice_thread_vector:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	247 .long 0 // Must be 'MICE'
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	248 .long 0 // Pointer to thread support vector
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	249 .long 0 // eCos executing flag
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	250 .long 0 // Must be 'GDB '
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	251 #endif // CYGHWR_HAL_ARM_ICE_THREAD_SUPPORT
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	252 .balign 32
96 b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	253
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	254 // Other vectors - this may include "fixed" locations
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	255 #ifdef PLATFORM_VECTORS
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	256 PLATFORM_VECTORS
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	257 #endif
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST jlarmour parents: 80 diff changeset	258
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	259 .text
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	260 // Startup code which will get the machine into supervisor mode
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	261 .global reset_vector
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	262 .type reset_vector,function
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	263 reset_vector:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	264 PLATFORM_SETUP1 // Early stage platform initialization
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	265 // which can set DRAM size at 0x40
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	266 // see <cyg/hal/hal_platform_setup.h>
4 1d7f19c9e4d1 Merge from eCos master repository on 1999-05-11-21:11:10-BST jlarmour parents: 2 diff changeset	267
54 f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	268 // Come here to reset board
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	269 warm_reset:
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	270
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	271 #if defined(CYG_HAL_STARTUP_RAM) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	272 !defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	273 mrs r7,cpsr // move back to IRQ mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	274 and r7,r7,#CPSR_MODE_BITS
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	275 cmp r7,#CPSR_SUPERVISOR_MODE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	276 beq start
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	277 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	278
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	279 // We cannot access any LED registers until after PLATFORM_SETUP1
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	280 LED 7
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	281
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	282 mov r0,#0 // move vectors
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	283 ldr r1,=__exception_handlers
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	284 #ifndef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	285 // Wait with this if stubs are included (see further down).
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	286 ldr r2,[r1,#0x04] // undefined instruction
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	287 str r2,[r0,#0x04]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	288 ldr r2,[r1,#0x24]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	289 str r2,[r0,#0x24]
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	290 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	291 ldr r2,[r1,#0x08] // software interrupt
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	292 str r2,[r0,#0x08]
46 797268ecc331 Merge from eCos master repository on 1999-10-19-18:55:31-BST jlarmour parents: 40 diff changeset	293
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	294 #ifdef CYGHWR_HAL_ARM_ICE_THREAD_SUPPORT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	295 ldr r2,=ice_thread_vector
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	296 sub r2,r2,r1 // compute fixed (low memory) address
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	297 ldr r3,=0x4D494345 // 'MICE'
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	298 str r3,[r2],#4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	299 ldr r3,=hal_arm_ice_thread_handler
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	300 str r3,[r2],#4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	301 mov r3,#1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	302 str r3,[r2],#4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	303 ldr r3,=0x47444220 // 'GDB '
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	304 str r3,[r2],#4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	305 #endif // CYGHWR_HAL_ARM_ICE_THREAD_SUPPORT
46 797268ecc331 Merge from eCos master repository on 1999-10-19-18:55:31-BST jlarmour parents: 40 diff changeset	306
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 152 diff changeset	307 #if defined(CYGSEM_HAL_ARM_PID_ANGEL_BOOT)
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	308 // Ugly hack to get into supervisor mode
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	309 ldr r2,[r1,#0x40]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	310 str r2,[r0,#0x28]
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	311
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	312 LED 6
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	313
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	314 swi // switch to supervisor mode
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	315 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	316
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	317 // =========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	318 // Real startup code. We jump here from the reset vector to set up the world.
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	319 .globl start
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	320 start:
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	321
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	322 LED 5
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	323
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	324 #if defined(CYG_HAL_STARTUP_RAM) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	325 !defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	326 // If we get restarted, hang here to avoid corrupting memory
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	327 ldr r0,.init_flag
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	328 ldr r1,[r0]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	329 1: cmp r1,#0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	330 bne 1b
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	331 ldr r1,init_done
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	332 str r1,[r0]
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	333 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	334
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	335 // Reset software interrupt pointer
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	336 mov r0,#0 // move vectors
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	337 ldr r1,.__exception_handlers
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	338 #if defined(CYG_HAL_STARTUP_RAM) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	339 !defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	340 cmp r7,#CPSR_SUPERVISOR_MODE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	341 beq 10f
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	342 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	343 ldr r2,[r1,#0x28] // software interrupt
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	344 str r2,[r0,#0x28]
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	345 10:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	346 ldr r2,[r1,#0x18] // IRQ
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	347 str r2,[r0,#0x18]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	348 ldr r2,[r1,#0x38]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	349 str r2,[r0,#0x38]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	350 ldr r2,[r1,#0x1C] // FIQ
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	351 str r2,[r0,#0x1C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	352 ldr r2,[r1,#0x3C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	353 str r2,[r0,#0x3C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	354 ldr r2,[r1,#0x0C] // abort (prefetch)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	355 str r2,[r0,#0x0C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	356 ldr r2,[r1,#0x2C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	357 str r2,[r0,#0x2C]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	358 ldr r2,[r1,#0x10] // abort (data)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	359 str r2,[r0,#0x10]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	360 ldr r2,[r1,#0x30]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	361 str r2,[r0,#0x30]
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	362
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	363 LED 4
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	364
172 cd45958b28ff Merge from eCos master repository on 2001-07-20-10:24:43-BST jlarmour parents: 161 diff changeset	365 #if defined(CYG_HAL_STARTUP_ROM) \|\| defined(CYG_HAL_STARTUP_ROMRAM)
54 f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	366 // Set up reset vector
132 0ae0bc38e387 Merge from eCos master repository on 2000-10-31-00:30:36-GMT jlarmour parents: 112 diff changeset	367 mov r0,#0
0ae0bc38e387 Merge from eCos master repository on 2000-10-31-00:30:36-GMT jlarmour parents: 112 diff changeset	368 ldr r1,.__exception_handlers
54 f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	369 ldr r2,[r1,#0x00] // reset vector intstruction
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	370 str r2,[r0,#0x00]
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	371 ldr r2,=warm_reset
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	372 str r2,[r0,#0x20]
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	373 // Relocate [copy] data from ROM to RAM
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	374 ldr r3,.__rom_data_start
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	375 ldr r4,.__ram_data_start
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	376 ldr r5,.__ram_data_end
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	377 cmp r4,r5 // jump if no data to move
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	378 beq 2f
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	379 sub r3,r3,#4 // loop adjustments
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	380 sub r4,r4,#4
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	381 1: ldr r0,[r3,#4]! // copy info
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	382 str r0,[r4,#4]!
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	383 cmp r4,r5
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	384 bne 1b
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	385 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	386 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	387
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	388 // initialize interrupt/exception environments
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	389 ldr sp,.__startup_stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	390 mov r0,#(CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE\|CPSR_IRQ_MODE)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	391 msr cpsr,r0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	392 ldr sp,.__exception_stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	393 mov r0,#(CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE\|CPSR_UNDEF_MODE)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	394 msr cpsr,r0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	395 ldr sp,.__exception_stack
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	396
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	397 // initialize CPSR (machine state register)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	398 mov r0,#(CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE\|CPSR_SUPERVISOR_MODE)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	399 msr cpsr,r0
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	400
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	401 // Note: some functions in LIBGCC1 will cause a "restore from SPSR"!!
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	402 msr spsr,r0
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	403
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	404 // initialize stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	405 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	406 // use interrupt stack for system initialization since it's bigger
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	407 // than the "startup" stack in this configuration
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	408 ldr sp,.__interrupt_stack
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	409 #else
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	410 ldr sp,.__startup_stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	411 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	412
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	413 // clear BSS
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	414 ldr r1,.__bss_start
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	415 ldr r2,.__bss_end
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	416 mov r0,#0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	417 cmp r1,r2
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	418 beq 2f
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	419 1: str r0,[r1],#4
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	420 cmp r1,r2
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	421 bls 1b
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	422 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	423
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	424 // Run kernel + application in THUMB mode
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	425 THUMB_MODE(r1,10)
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	426
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	427 LED 3
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	428
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	429 // Call platform specific hardware initialization
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	430 bl hal_hardware_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	431
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	432 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	433 bl initialize_stub
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	434
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	435 // Now that stub is initialized, change vector. It is possible
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	436 // to single-step through most of the init code, except the below.
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	437 // Put a breakpoint at the call to cyg_hal_invoke_constructors to
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	438 // pass over this bit (s-s depends on internal state in the stub).
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	439 #endif
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	440
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	441 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS) \|\| \
a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 46 diff changeset	442 defined(CYGIMP_HAL_PROCESS_ALL_EXCEPTIONS)
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	443 mov r0,#0 // move vectors
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	444 ldr r1,=__exception_handlers
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	445 ldr r2,[r1,#0x04] // undefined instruction
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	446 str r2,[r0,#0x04]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	447 ldr r2,[r1,#0x24]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	448 str r2,[r0,#0x24]
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	449 #endif
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 110 diff changeset	450
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	451 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	452 \|\| defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	453 .extern hal_ctrlc_isr_init
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	454 bl hal_ctrlc_isr_init
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	455 #endif
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	456
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	457 LED 2
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	458
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	459 // Run through static constructors
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	460 bl cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	461
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	462 LED 1
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	463
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	464 // This starts up the eCos kernel
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	465 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
946 b4d06891fe1a Fix a thumb build problem, and switch to arm-elf-gcc -mthumb rather bartv parents: 316 diff changeset	466 ldr r1,=__startup_stack
b4d06891fe1a Fix a thumb build problem, and switch to arm-elf-gcc -mthumb rather bartv parents: 316 diff changeset	467 mov sp,r1
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	468 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	469 bl cyg_start
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	470 _start_hang:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	471 b _start_hang
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	472 .code 32
54 f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	473
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	474 .global reset_platform
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	475 .type reset_platform,function
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	476 reset_platform:
70 c5536bad4c24 Merge from eCos master repository on 2000-02-11-15:46:40-GMT jlarmour parents: 66 diff changeset	477 #ifdef CYGSEM_HAL_ROM_MONITOR
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	478 // initialize CPSR (machine state register)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	479 mov r0,#(CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE\|CPSR_SUPERVISOR_MODE)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	480 msr cpsr,r0
54 f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	481 b warm_reset
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	482 #else
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	483 mov r0,#0
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	484 mov pc,r0 // Jump to reset vector
f10165814f1e Merge from eCos master repository on 1999-11-19-22:24:39-GMT jlarmour parents: 50 diff changeset	485 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	486
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	487 init_done:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	488 .long 0xDEADB00B
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	489
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	490 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	491 // Exception handlers
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	492 // Assumption: get here from a non-user context [mode]
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	493 // except in case of standalone app. running in user mode
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	494 // (CYGOPT_HAL_ARM_WITH_USER_MODE should have been defined)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	495 //
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	496 .code 32
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	497 undefined_instruction:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	498 ldr sp,.__undef_exception_stack // get good stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	499 stmfd sp!,{r0-r5} // save some supervisor regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	500 mrs r1,spsr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	501 tst r1,#CPSR_THUMB_ENABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	502 subeq r0,lr,#4 // PC at time of interrupt (ARM)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	503 subne r0,lr,#2 // PC at time of interrupt (thumb)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	504 mov r2,#CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	505 mov r3,sp
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	506 b call_exception_handler
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	507
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	508 .code 32
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	509 software_interrupt:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	510 stmfd sp!,{r8}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	511 ldr r8,.__undef_exception_stack // get good stack
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	512 stmfd r8!,{r0-r5} // save some supervisor regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	513 mov r3,r8
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	514 ldmfd sp!,{r8}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	515 mrs r1,spsr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	516 tst r1,#CPSR_THUMB_ENABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	517 subeq r0,lr,#4 // PC at time of SWI (ARM)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	518 subne r0,lr,#2 // PC at time of SWI (thumb)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	519 mov r2,#CYGNUM_HAL_EXCEPTION_INTERRUPT
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	520 b call_exception_handler
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	521
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	522 .code 32
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	523 abort_prefetch:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	524 ldr sp,.__undef_exception_stack // get good stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	525 stmfd sp!,{r0-r5} // save some supervisor regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	526 sub r0,lr,#4 // PC at time of interrupt
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	527 mrs r1,spsr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	528 mov r2,#CYGNUM_HAL_EXCEPTION_CODE_ACCESS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	529 mov r3,sp
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	530 b call_exception_handler
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	531
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	532 .code 32
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	533 abort_data:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	534 ldr sp,.__undef_exception_stack // get good stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	535 stmfd sp!,{r0-r5} // save some supervisor regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	536 sub r0,lr,#4 // PC at time of interrupt
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	537 mrs r1,spsr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	538 mov r2,#CYGNUM_HAL_EXCEPTION_DATA_ACCESS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	539 mov r3,sp
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	540 b call_exception_handler
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 16 diff changeset	541
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	542 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	543 // Dispatch an exception handler.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	544
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	545 .code 32
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	546 call_exception_handler:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	547 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	548 // On Entry:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	549 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	550 // r4,r5 = scratch
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	551 // r3 = pointer to temp save area
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	552 // r2 = vector number
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	553 // r1 = exception psr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	554 // r0 = exception pc
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	555 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	556 // [r3+20]: exception r5
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	557 // [r3+16]: exception r4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	558 // [r3+12]: exception r3
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	559 // [r3+8] : exception r2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	560 // [r3+4] : exception r1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	561 // [r3] : exception r0
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	562
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	563 mrs r4,cpsr // switch to Supervisor Mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	564 bic r4,r4,#CPSR_MODE_BITS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	565 orr r4,r4,#CPSR_SUPERVISOR_MODE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	566 msr cpsr,r4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	567
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	568 mov r5,sp // save original svc sp
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	569 mov r4,lr // and original svc lr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	570 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	571 // Make sure we use the GDB stack.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	572 ldr sp,.__GDB_stack
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	573 cmp r5,sp // already on GDB stack?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	574 bhi 10f
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	575 ldr r4,.__GDB_stack_base
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	576 cmp r5,r4
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	577 movhi sp,r5
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	578 10:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	579 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	580 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	581 // r5 holds original svc sp, current sp is stack to use
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	582 // r4 holds original svc lr, which must also be preserved
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	583 //
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	584
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	585 stmfd sp!,{r0-r2,r4,r5} // push svc_sp, svc_lr, vector, psr, pc
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	586
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	587 #ifdef CYGOPT_HAL_ARM_WITH_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	588 // did exception occur in user mode ?
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	589 and r2, r1, #CPSR_MODE_BITS
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	590 cmp r2, #CPSR_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	591 bne 1f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	592 stmfd sp, {r8-r12, sp, lr}^ // get user mode regs
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	593 nop
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	594 sub sp, sp, #4*7
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	595 bal 2f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	596 1:
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	597 #endif
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	598 // switch to pre-exception mode to get banked regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	599 mov r0,sp // r0 survives mode switch
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	600 mrs r2,cpsr // Save current psr for return
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	601 orr r1,r1,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
316 e17d1cf55283 ARM exception handler fix msalter parents: 210 diff changeset	602 bic r1,r1,#CPSR_THUMB_ENABLE
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	603 msr cpsr,r1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	604 stmfd r0!,{r8-r12,sp,lr}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	605 msr cpsr,r2 // back to svc mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	606 mov sp,r0 // update stack pointer
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	607 2:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	608 // now save pre-exception r0-r7 on current stack
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	609 ldmfd r3,{r0-r5}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	610 stmfd sp!,{r0-r7}
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	611
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	612 // SP needs fixing if exception occured in SVC mode.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	613 // The original SVC LR is still in place so that
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	614 // does not need to be fixed here.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	615 ldr r1,[sp,#armreg_cpsr]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	616 and r1,r1,#CPSR_MODE_BITS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	617 cmp r1,#CPSR_SUPERVISOR_MODE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	618 ldreq r1,[sp,#armreg_svcsp]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	619 streq r1,[sp,#armreg_sp]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	620
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	621 #ifdef CYGHWR_HAL_ARM_DUMP_EXCEPTIONS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	622 mov r0,sp
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	623 ldr r1,.__dump_procs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	624 ldr r2,[sp,#armreg_vector]
1307 1750695510ac Fix exception debug in THUMB mode - from Thomas Koeller gthomas parents: 1084 diff changeset	625 ldr r1,[r1,r2,lsl #2]
1750695510ac Fix exception debug in THUMB mode - from Thomas Koeller gthomas parents: 1084 diff changeset	626 THUMB_MODE(r9,10)
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	627 mov lr,pc
1307 1750695510ac Fix exception debug in THUMB mode - from Thomas Koeller gthomas parents: 1084 diff changeset	628 mov pc,r1
1750695510ac Fix exception debug in THUMB mode - from Thomas Koeller gthomas parents: 1084 diff changeset	629 #else
1750695510ac Fix exception debug in THUMB mode - from Thomas Koeller gthomas parents: 1084 diff changeset	630 THUMB_MODE(r9,10)
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	631 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	632
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	633 // call exception handler
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	634 mov r0,sp
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	635 bl exception_handler
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	636
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	637 #ifdef CYGHWR_HAL_ARM_DUMP_EXCEPTIONS
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	638 mov r0,sp
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	639 bl cyg_hal_report_exception_handler_returned
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	640 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	641
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	642 ARM_MODE(r1,10)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	643
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	644 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	645 // Return from exception
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	646 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	647 return_from_exception:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	648
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	649 ldr r0,[sp,#armreg_cpsr]
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	650
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	651 // return to supervisor mode is simple
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	652 and r1,r0,#CPSR_MODE_BITS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	653 cmp r1,#CPSR_SUPERVISOR_MODE
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	654
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	655 #ifndef CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	656 msr spsr,r0
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	657 ldmeqfd sp,{r0-r14,pc}^
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	658 #else
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	659 // we must take care of not corrupting the current (svc)
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	660 // spsr which happens to be also the pre-exception spsr
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	661 bne 1f
1084 04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	662 tst r0, #CPSR_THUMB_ENABLE
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	663
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	664 // when returning to thumb/svc mode, there is no easy way to preserve
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	665 // spsr. It is possible to do so, but would add a lot of instructions.
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	666 // The purpose of CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR is to allow stepping
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	667 // through SWI exception handling code, so not preserving spsr in this
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	668 // case should be okay.
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	669 msrne spsr,r0
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	670 ldmnefd sp,{r0-r14,pc}^
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	671
04b94baa3683 Fix CYGOPT_HAL_ARM_PRESERVE_SVC_SPSR handling msalter parents: 1002 diff changeset	672 // we are returning to arm/svc mode thus we must restore the
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	673 // pre-exception cpsr before returning to interrupted code
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	674 msr cpsr, r0
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	675 ldmfd sp, {r0-r14, pc}
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	676 1:
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	677 // we are not returning to svc mode thus we can safely restore
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	678 // svc spsr
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	679 msr spsr, r0
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	680 #endif
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	681
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	682 #ifdef CYGOPT_HAL_ARM_WITH_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	683 // are we returning to user mode ?
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	684 and r2, r1, #CPSR_MODE_BITS
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	685 cmp r2, #CPSR_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	686 add r2, sp, #armreg_r8
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	687 bne 1f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	688 ldmfd r2, {r8-r14}^ // restore user mode regs
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	689 nop
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	690 bal 2f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	691 1:
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	692 #else
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	693 add r2, sp, #armreg_r8
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	694 #endif
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	695 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	696 // return to other non-user modes is a little trickier
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	697 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	698
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	699 // switch to pre-exception mode and restore r8-r14
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	700 mrs r1,cpsr
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	701 orr r0,r0,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
316 e17d1cf55283 ARM exception handler fix msalter parents: 210 diff changeset	702 bic r0,r0,#CPSR_THUMB_ENABLE
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	703 msr cpsr,r0
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	704 ldmfd r2,{r8-r14}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	705 msr cpsr, r1 // back to svc mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	706
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	707 2:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	708 // move sp,lr and pc for final load
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	709 ldr r0,[sp,#armreg_svcsp]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	710 str r0,[sp,#armreg_r8]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	711 ldr r0,[sp,#armreg_svclr]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	712 str r0,[sp,#armreg_r9]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	713 ldr r0,[sp,#armreg_pc]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	714 str r0,[sp,#armreg_r10]
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	715
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	716 // restore r0-r7,sp,lr and return from exception
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	717 ldmfd sp,{r0-r7,sp,lr,pc}^
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	718
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	719 #ifdef CYGHWR_HAL_ARM_DUMP_EXCEPTIONS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	720 __dump_procs:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	721 .word 0 // placeholder for reset
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	722 .word cyg_hal_report_undefined_instruction
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	723 .word cyg_hal_report_software_interrupt
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	724 .word cyg_hal_report_abort_prefetch
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	725 .word cyg_hal_report_abort_data
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	726 .word 0 // reserved
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	727 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	728
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	729
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	730 // Handle device interrupts
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	731 // This is slightly more complicated than the other exception handlers because
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	732 // it needs to interface with the kernel (if present).
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	733 // Assumption: can get here from any mode, including user mode
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	734 // (spurious interrupt while standalone app. is running in user mode)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	735
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	736 .code 32
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 16 diff changeset	737 FIQ:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	738 // We can get here from any non-user mode.
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	739 mrs r8,spsr // CPSR at time of interrupt
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	740 and r9,r8,#CPSR_MODE_BITS // isolate pre-interrupt mode
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	741 cmp r9,#CPSR_IRQ_MODE
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	742 bne 1f
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	743 // If FIQ interrupted IRQ mode, just return with FIQ disabled.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	744 // The common interrupt handling takes care of the rest.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	745 orr r8,r8,#CPSR_FIQ_DISABLE
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	746 msr spsr,r8
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	747 subs pc,lr,#4
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	748 1:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	749 // If FIQ interrupted other non-user mode, switch to IRQ mode and
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	750 // fall through to IRQ handler.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	751 ldr sp,.__exception_stack // get good stack to save lr and spsr
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	752 stmdb sp,{r8,lr}
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	753 mov r8,#CPSR_IRQ_MODE\|CPSR_FIQ_DISABLE\|CPSR_IRQ_DISABLE
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	754 msr cpsr,r8 // switch to IRQ mode
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	755 ldr sp,.__exception_stack // get regs saved in FIQ mode
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	756 ldmdb sp,{sp,lr}
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	757 msr spsr,sp
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	758
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	759 // now it looks like we got an IRQ instead of an FIQ except that
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 150 diff changeset	760 // FIQ is disabled so we don't recurse.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	761 IRQ:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	762 // Note: I use this exception stack while saving the context because
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	763 // the current SP does not seem to be always valid in this CPU mode.
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	764 ldr sp,.__exception_stack // get good stack
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	765 stmfd sp!,{r0-r5} // save some supervisor regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	766 sub r0,lr,#4 // PC at time of interrupt
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	767 mrs r1,spsr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	768 mov r2,#CYGNUM_HAL_VECTOR_IRQ
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	769 mov r3,sp
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	770
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	771 handle_IRQ_or_FIQ:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	772
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	773 mrs r4,cpsr // switch to Supervisor Mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	774 bic r4,r4,#CPSR_MODE_BITS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	775 orr r4,r4,#CPSR_SUPERVISOR_MODE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	776 msr cpsr,r4
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 16 diff changeset	777
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	778 mov r5,sp // save original svc sp
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	779 mov r4,lr // save original svc lr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	780 stmfd sp!,{r0-r2,r4,r5} // push svc_sp, svc_lr, vector, psr, pc
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	781
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	782 #ifdef CYGOPT_HAL_ARM_WITH_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	783 // did exception occur in user mode ?
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	784 and r2, r1, #CPSR_MODE_BITS
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	785 cmp r2, #CPSR_USER_MODE
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	786 bne 1f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	787 stmfd sp, {r8-r12, sp, lr}^ // get user mode regs
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	788 nop
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	789 sub sp, sp, #4*7
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	790 bal 2f
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	791 1:
609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	792 #endif
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	793 // switch to pre-exception mode to get banked regs
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	794 mov r0,sp // r0 survives mode switch
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	795 mrs r2,cpsr // Save current psr for return
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	796 orr r1,r1,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
316 e17d1cf55283 ARM exception handler fix msalter parents: 210 diff changeset	797 bic r1,r1,#CPSR_THUMB_ENABLE
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	798 msr cpsr,r1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	799 stmfd r0!,{r8-r12,sp,lr}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	800 msr cpsr,r2 // back to svc mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	801 mov sp,r0 // update stack pointer
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	802
1002 609c8b1447ee HAL enhancements from Pierre Habraken msalter parents: 982 diff changeset	803 2:
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	804 // now save pre-exception r0-r7 on current stack
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	805 ldmfd r3,{r0-r5}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	806 stmfd sp!,{r0-r7}
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	807
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	808 // sp needs fixing if exception occured in SVC mode.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	809 ldr r1,[sp,#armreg_cpsr]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	810 and r1,r1,#CPSR_MODE_BITS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	811 cmp r1,#CPSR_SUPERVISOR_MODE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	812 ldreq r1,[sp,#armreg_svcsp]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	813 streq r1,[sp,#armreg_sp]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	814
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	815 mov v6,sp // Save pointer to register frame
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	816
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	817 // mov r0,sp
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	818 // bl _show_frame_in
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	819
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	820 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	821 // Switch to interrupt stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	822 ldr r2,.irq_level // current number of nested interrupts
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	823 ldr r0,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	824 add r1,r0,#1
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	825 str r1,[r2] // if was zero, switch stacks
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	826 cmp r0,#0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	827 moveq r1,sp // save old stack pointer
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	828 ldreq sp,.__interrupt_stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	829 stmeqfd sp!,{r1}
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	830 10:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	831 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	832
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	833 // The entire CPU state is now stashed on the stack,
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	834 // increment the scheduler lock and handle the interrupt
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	835
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	836 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	837 .extern cyg_scheduler_sched_lock
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	838 ldr r3,.cyg_scheduler_sched_lock
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	839 ldr r4,[r3]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	840 add r4,r4,#1
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	841 str r4,[r3]
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	842 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	843
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	844 THUMB_MODE(r3,10)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	845
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	846 mov r0,v6
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	847 bl hal_IRQ_handler // determine interrupt source
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	848 mov v1,r0 // returned vector #
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	849
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	850 #if defined(CYGPKG_KERNEL_INSTRUMENT) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	851 defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	852 ldr r0,=RAISE_INTR // arg0 = type = INTR,RAISE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	853 mov r1,v1 // arg1 = vector
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	854 mov r2,#0 // arg2 = 0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	855 bl cyg_instrument // call instrument function
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	856 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	857
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	858 ARM_MODE(r0,10)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	859
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	860 mov r0,v1 // vector #
103 95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	861
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	862 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	863 \|\| defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	864 // If we are supporting Ctrl-C interrupts from GDB, we must squirrel
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	865 // away a pointer to the save interrupt state here so that we can
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	866 // plant a breakpoint at some later time.
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	867
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	868 .extern hal_saved_interrupt_state
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	869 ldr r2,=hal_saved_interrupt_state
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	870 str v6,[r2]
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	871 #endif
95f3e12a6327 Merge from eCos master repository on 2000-06-23-16:41:10-BST jlarmour parents: 96 diff changeset	872
152 f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	873 cmp r0,#CYGNUM_HAL_INTERRUPT_NONE // spurious interrupt
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	874 bne 10f
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	875 #ifndef CYGIMP_HAL_COMMON_INTERRUPTS_IGNORE_SPURIOUS
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	876 mov r0,v6 // register frame
982 282a39769954 * src/vectors.S (handle_IRQ_or_FIQ): Tweak below to be conditional on jlarmour parents: 980 diff changeset	877 # ifdef __thumb__
980 802a526cd4ac * vectors.S (handle_IRQ_or_FIQ): jlarmour parents: 946 diff changeset	878 ldr r1,=hal_spurious_IRQ
802a526cd4ac * vectors.S (handle_IRQ_or_FIQ): jlarmour parents: 946 diff changeset	879 mov lr,pc
802a526cd4ac * vectors.S (handle_IRQ_or_FIQ): jlarmour parents: 946 diff changeset	880 bx r1
982 282a39769954 * src/vectors.S (handle_IRQ_or_FIQ): Tweak below to be conditional on jlarmour parents: 980 diff changeset	881 # else
282a39769954 * src/vectors.S (handle_IRQ_or_FIQ): Tweak below to be conditional on jlarmour parents: 980 diff changeset	882 bl hal_spurious_IRQ
282a39769954 * src/vectors.S (handle_IRQ_or_FIQ): Tweak below to be conditional on jlarmour parents: 980 diff changeset	883 # endif
152 f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	884 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_IGNORE_SPURIOUS
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	885 b spurious_IRQ
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	886
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	887 10: ldr r1,.hal_interrupt_data
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	888 ldr r1,[r1,v1,lsl #2] // handler data
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	889 ldr r2,.hal_interrupt_handlers
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	890 ldr v3,[r2,v1,lsl #2] // handler (indexed by vector #)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	891 mov r2,v6 // register frame (this is necessary
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	892 // for the ISR too, for ^C detection)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	893
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	894 #ifdef __thumb__
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	895 ldr lr,=10f
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	896 bx v3 // invoke handler (thumb mode)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	897 .pool
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	898 .code 16
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	899 .thumb_func
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	900 IRQ_10T:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	901 10: ldr r2,=15f
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	902 bx r2 // switch back to ARM mode
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	903 .pool
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	904 .code 32
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	905 15:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	906 IRQ_15A:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	907 #else
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	908 mov lr,pc // invoke handler (call indirect
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	909 mov pc,v3 // thru v3)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	910 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	911
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	912 spurious_IRQ:
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	913
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	914 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	915 // If we are returning from the last nested interrupt, move back
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	916 // to the thread stack. interrupt_end() must be called on the
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	917 // thread stack since it potentially causes a context switch.
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	918 ldr r2,.irq_level
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	919 ldr r3,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	920 subs r1,r3,#1
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	921 str r1,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	922 ldreq sp,[sp] // This should be the saved stack pointer
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	923 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	924 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	925 // The return value from the handler (in r0) will indicate whether a
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	926 // DSR is to be posted. Pass this together with a pointer to the
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	927 // interrupt object we have just used to the interrupt tidy up routine.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	928
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	929 // don't run this for spurious interrupts!
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	930 cmp v1,#CYGNUM_HAL_INTERRUPT_NONE
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	931 beq 17f
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	932 ldr r1,.hal_interrupt_objects
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	933 ldr r1,[r1,v1,lsl #2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	934 mov r2,v6 // register frame
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	935
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	936 THUMB_MODE(r3,10)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	937
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	938 bl interrupt_end // post any bottom layer handler
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	939 // threads and call scheduler
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	940 ARM_MODE(r1,10)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 160 diff changeset	941 17:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	942 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	943
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	944 // mov r0,sp
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	945 // bl show_frame_out
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	946
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	947 // return from IRQ is same as return from exception
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	948 b return_from_exception
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	949
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	950 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	951 // Execute pending DSRs the interrupt stack
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	952 // Note: this can only be called from code running on a thread stack
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	953 FUNC_START_ARM(hal_interrupt_stack_call_pending_DSRs, r1)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	954 stmfd sp!,{r4,r5,lr}
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	955 // Disable interrupts
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	956 mrs r4,cpsr // disable IRQ's
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	957 orr r2,r4,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	958 bic r5,r4,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	959 msr cpsr,r2
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	960 // Switch to interrupt stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	961 mov r3,sp // save old stack pointer
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	962 ldr sp,.__interrupt_stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	963 stmfd sp!,{r3} // stored at top of interrupt stack
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	964 ldr r2,.irq_level // current number of nested interrupts
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	965 ldr r3,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	966 add r3,r3,#1 // bump nesting level
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	967 str r3,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	968 msr cpsr,r5 // enable interrupts
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	969
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	970 THUMB_MODE(r1,20)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	971
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	972 bl cyg_interrupt_call_pending_DSRs
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	973
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	974
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	975 ARM_MODE(r1,22)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	976
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	977 // Disable interrupts
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	978 mrs r1,cpsr // disable IRQ's
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	979 orr r2,r1,#CPSR_IRQ_DISABLE\|CPSR_FIQ_DISABLE
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	980 msr cpsr,r2
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	981
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	982 // Move back to the thread stack.
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	983 ldr r2,.irq_level
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	984 ldr r3,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	985 sub r3,r3,#1 // decrement nesting level
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	986 str r3,[r2]
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	987 ldr sp,[sp] // This should be the saved stack pointer
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	988 msr cpsr,r4 // restore interrupts to original state
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	989
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	990 #ifdef __thumb__
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	991 ldmfd sp!,{r4,r5,lr} // return
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	992 bx lr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	993 #else
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	994 ldmfd sp!,{r4,r5,pc} // return
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	995 #endif // __thumb__
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	996 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 10 diff changeset	997
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	998 // Thumb-only support functions
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	999 #ifdef __thumb__
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1000
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1001 FUNC_START_ARM(hal_disable_interrupts, r1)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1002 mrs r0,cpsr // current state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1003 orr r1,r0,#0xC0 // mask both FIQ and IRQ
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1004 msr cpsr,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1005 bx lr // exit, _old_ in r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1006
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1007 FUNC_START_ARM(hal_enable_interrupts, r1)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1008 mrs r0,cpsr // current state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1009 bic r1,r0,#0xC0 // mask both FIQ and IRQ
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1010 msr cpsr,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1011 bx lr // exit
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1012
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1013 FUNC_START_ARM(hal_restore_interrupts, r1)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1014 mrs r1,cpsr // current state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1015 bic r1,r1,#0xC0 // mask out FIQ/IRQ bits
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1016 and r0,r0,#0xC0 // keep only FIQ/IRQ
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1017 orr r1,r1,r0 // mask both FIQ and IRQ
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1018 msr cpsr,r1
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1019 bx lr // exit
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1020
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1021 FUNC_START_ARM(hal_query_interrupts, r1)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1022 mrs r0,cpsr // current state
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1023 bx lr // exit, state in r0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1024
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1025 #endif // __thumb__
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1026
34 29bc183297e1 Merge from eCos master repository on 1999-09-02-16:26:10-BST jlarmour parents: 28 diff changeset	1027 // Dummy/support functions
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1028
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1029 .global __gccmain
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1030 .global _psr
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1031 .global _sp
34 29bc183297e1 Merge from eCos master repository on 1999-09-02-16:26:10-BST jlarmour parents: 28 diff changeset	1032
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1033 #ifdef __thumb__
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1034 .code 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1035 .thumb_func
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1036 __gccmain:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1037 bx lr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1038
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1039 .code 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1040 .thumb_func
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1041 _psr:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1042 ARM_MODE(r1,10)
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1043 mrs r0,cpsr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1044 bx lr
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1045
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1046 .code 16
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1047 .thumb_func
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1048 _sp:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1049 mov r0,sp
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1050 bx lr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1051 #else
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1052 __gccmain:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1053 mov pc,lr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1054
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1055 _psr:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1056 mrs r0,cpsr
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1057 mov pc,lr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1058
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1059 _sp:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1060 mov r0,sp
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1061 mov pc,lr
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 70 diff changeset	1062 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1063
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1064
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1065 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1066 // Pointers to various objects.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1067 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1068 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1069 PTR(__GDB_stack_base)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1070 PTR(__GDB_stack)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1071 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1072 PTR(__startup_stack)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1073 PTR(__exception_stack)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1074 PTR(__undef_exception_stack)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1075 PTR(__bss_start)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1076 PTR(__bss_end)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1077 PTR(_end)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1078 PTR(__rom_data_start)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1079 PTR(__ram_data_start)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1080 PTR(__ram_data_end)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1081 PTR(hal_interrupt_handlers)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1082 PTR(hal_interrupt_data)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1083 PTR(hal_interrupt_objects)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1084 PTR(__exception_handlers)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1085 PTR(init_flag)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1086 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1087 PTR(cyg_scheduler_sched_lock)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1088 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1089 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1090 PTR(irq_level)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1091 PTR(__interrupt_stack)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1092 #endif
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	1093 #ifdef CYGHWR_HAL_ARM_DUMP_EXCEPTIONS
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	1094 PTR(__dump_procs)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 172 diff changeset	1095 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1096
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	1097 //
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	1098 // Identification - useful to find out when a system was configured
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	1099 _eCos_id:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1100 .asciz "eCos : " __DATE__
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	1101
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1102
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1103 // -------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1104 // Interrupt vector tables.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1105 // These tables contain the isr, data and object pointers used to deliver
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1106 // interrupts to user code.
24 306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	1107
306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	1108 // Despite appearances, their sizes are not #defines, but .equ symbols
306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	1109 // generated by magic without proper dependencies in arm.inc
306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	1110 // Recompiling will not DTRT without manual intervention.
306eee292492 Merge from eCos master repository on 1999-07-16-05:47:06-BST jlarmour parents: 20 diff changeset	1111
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1112 .data
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1113
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1114 init_flag:
150 f0e3fb000de8 Merge from eCos master repository on 2001-01-26-06:43:02-GMT jlarmour parents: 148 diff changeset	1115 .balign 4
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1116 .long 0
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1117
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1118 .extern hal_default_isr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1119
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1120 .globl hal_interrupt_handlers
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1121 hal_interrupt_handlers:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1122 .rept CYGNUM_HAL_ISR_COUNT
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1123 .long hal_default_isr
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1124 .endr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1125
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1126 .globl hal_interrupt_data
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1127 hal_interrupt_data:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1128 .rept CYGNUM_HAL_ISR_COUNT
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1129 .long 0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1130 .endr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1131
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1132 .globl hal_interrupt_objects
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1133 hal_interrupt_objects:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1134 .rept CYGNUM_HAL_ISR_COUNT
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1135 .long 0
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1136 .endr
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1137
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1138 // -------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1139 // Temporary interrupt stack
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1140
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1141 .section ".bss"
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1142
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1143 // Small stacks, only used for saving information between CPU modes
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1144 __exception_stack_base:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1145 .rept 32
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1146 .long 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1147 .endr
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1148 __exception_stack:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1149 .rept 32
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1150 .long 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1151 .endr
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1152 __undef_exception_stack:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1153
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1154 // Runtime stack used during all interrupt processing
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1155 #ifndef CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1156 #define CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE 4096
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1157 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1158 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1159 .balign 16
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1160 .global cyg_interrupt_stack_base
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	1161 cyg_interrupt_stack_base:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1162 __interrupt_stack_base:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1163 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1164 .byte 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1165 .endr
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1166 .balign 16
2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1167 .global cyg_interrupt_stack
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	1168 cyg_interrupt_stack:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1169 __interrupt_stack:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1170 irq_level:
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1171 .long 0
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1172 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1173
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1174 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1175 .balign 16
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1176 __GDB_stack_base:
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 154 diff changeset	1177 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE // rather than 1k
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1178 .byte 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1179 .endr
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1180 __GDB_stack:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1181 #endif
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1182 .balign 16
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1183 __startup_stack_base:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1184 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1185 .rept 512
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1186 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1187 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1188 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1189 .byte 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1190 .endr
80 2085233a121a Merge from eCos master repository on 2000-04-07-07:52:29-BST jlarmour parents: 76 diff changeset	1191 .balign 16
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1192 __startup_stack:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1193
56 755351606154 Merge from eCos master repository on 1999-12-01-18:03:05-GMT jlarmour parents: 54 diff changeset	1194 #ifdef PLATFORM_EXTRAS
755351606154 Merge from eCos master repository on 1999-12-01-18:03:05-GMT jlarmour parents: 54 diff changeset	1195 #include PLATFORM_EXTRAS
755351606154 Merge from eCos master repository on 1999-12-01-18:03:05-GMT jlarmour parents: 54 diff changeset	1196 #endif
755351606154 Merge from eCos master repository on 1999-12-01-18:03:05-GMT jlarmour parents: 54 diff changeset	1197
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1198 // --------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1199 // end of vectors.S

Mercurial > ecos

annotate packages/hal/arm/arch/current/src/vectors.S @ 1307:1750695510ac