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

annotate packages/hal/mips/arch/current/src/vectors.S @ 6:d376b777e2ce ecos-sw-1999-05-14

Merge from eCos master repository on 1999-05-14-19:27:43-BST

author	jlarmour
date	Fri, 14 May 1999 12:20:00 +0000
parents	443894e2e912
children	ece80412419a

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 ## vectors.S
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 ## MIPS exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	8 #####COPYRIGHTBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	9 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	10 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	11 # The contents of this file are subject to the Cygnus eCos Public License
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	12 # Version 1.0 (the "License"); you may not use this file except in
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	13 # compliance with the License. You may obtain a copy of the License at
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	14 # http://sourceware.cygnus.com/ecos
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	15 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	16 # Software distributed under the License is distributed on an "AS IS"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	18 # License for the specific language governing rights and limitations under
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	19 # the License.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	20 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	21 # The Original Code is eCos - Embedded Cygnus Operating System, released
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	22 # September 30, 1998.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	23 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	24 # The Initial Developer of the Original Code is Cygnus. Portions created
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	25 # by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	26 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	27 #
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	28 #####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	29 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 #######DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	31 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	32 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 ## Date: 1998-02-04
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	35 ## Purpose: MIPS exception vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	36 ## Description: This file defines the code placed into the exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	37 ## vectors. It also contains the first level default VSRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	38 ## that save and restore state for both exceptions and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 ## interrupts.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 ######DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45 #include <pkgconf/system.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 #ifdef CYGPKG_KERNEL
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 # include <pkgconf/kernel.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	52 #include <cyg/hal/arch.inc>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	54 .extern cyg_instrument
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	55
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 ## Hardware supplied vectors
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59 .set noreorder
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60 .set noat
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62 .section ".reset_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64 # Reset vector at 0xBFC00000
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	66 FUNC_START(reset_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67 la v0,_start # jump to start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68 jr v0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	70 FUNC_END(reset_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	71
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	72 .section ".debug_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	74 # Debug vector at 0xBFC00200
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	76 FUNC_START(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	77 la k0,32
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	78 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	79 lw k1,32*4(k1) # load debug vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	80 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	81 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	82 FUNC_END(debug_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	83
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	84 .section ".other_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	85
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 # Common vector at 0x80000080 or 0xBFC00180
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	88 FUNC_START(other_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	89 mfc0 k0,cause # K0 = exception cause
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	90 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	91 andi k0,k0,0x7F # isolate exception code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	92 la k1,hal_vsr_table # address of VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	93 add k1,k1,k0 # offset of VSR entry
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	94 lw k1,0(k1) # k1 = pointer to VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	97 FUNC_END(other_vector)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	98
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99 .section ".utlb_vector","ax"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	101 FUNC_START(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 la k0,33
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 la k1,hal_vsr_table # Get VSR table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104 lw k1,33*4(k1) # load utlb vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 jr k1 # go there
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 nop # (delay slot)
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	107 FUNC_END(utlb_vector)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 ## Startup code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 .text
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	114 FUNC_START(_start)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 # Initialize hardware
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	118 hal_cpu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	119 hal_mmu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	120 hal_fpu_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	121 hal_memc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	122 hal_intc_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	123 hal_cache_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	124 hal_diag_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	125 hal_timer_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	126
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 # load initial stack pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 la a0,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 move sp,a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	134 hal_mon_init
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136 #ifdef CYG_HAL_STARTUP_ROM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 # Copy data from ROM to RAM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139 .extern hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140 jal hal_copy_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	142
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145 # Zero BSS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	147 .extern hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 jal hal_zero_bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	151 # Cal variant and platform HAL
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	152 # initialization routines.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	154 .extern hal_variant_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	155 jal hal_variant_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	156 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	157
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	158 .extern hal_platform_init
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	159 jal hal_platform_init
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	160 nop
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	161
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	162 # Call constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	163 .extern cyg_hal_invoke_constructors
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	164 jal cyg_hal_invoke_constructors
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	165 nop
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	166
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	167 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	168 .extern initialize_stub
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	169 jal initialize_stub
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	170 nop
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	171 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 # Call cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 .extern cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 jal cyg_start
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	179 9: j 9b # Loop if we return
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	180 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	182 FUNC_END(_start )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	183
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	184 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	185 ## Default exception VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	186 ## Saves machine state and calls external handling code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	187
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	188 FUNC_START(__default_exception_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	189
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	191 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	192 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	195
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	196 move k1,sp # K1 = original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	197
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198 #ifdef CYG_HAL_ROM_MONITOR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 # Switch to interrupt stack to handle exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 la sp,__interrupt_stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	206 mfc0 k0,cause
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	207 andi k0,k0,0x7F # isolate exception code
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	209
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210 .set noat
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211 # store GPRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212 sw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213 sw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214 sw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215 sw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 sw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	217 sw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218 sw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219 sw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	220 sw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221 sw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 sw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223 sw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224 sw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225 sw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226 sw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227 sw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228 sw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229 sw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230 sw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231 sw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	232 sw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 sw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234 sw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 sw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236 sw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	237 sw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	238 # sw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	239 # sw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	240 sw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	241 # sw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	242 sw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	243 sw $31,(mipsreg_regs+31*4)(sp) # == RA
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 mflo a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	247 sw a0,mipsreg_hi(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 sw a1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 # K1 contains original SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 sw k1,(mipsreg_regs+29*4)(sp) # store in reg dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 # save remaining machine state registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 mfc0 t0,cause
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	255 mfc0 t1,status
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	256 mfc0 t2,cache
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 mfc0 t3,badvr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	258 mfc0 t4,config
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 mfc0 t5,prid
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260 mfc0 t6,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 sw t0,mipsreg_cause(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	263 sw t1,mipsreg_sr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 sw t2,mipsreg_cache(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265 sw t3,mipsreg_badvr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 sw t4,mipsreg_config(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267 sw t5,mipsreg_prid(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 sw t6,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	269
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	270 hal_fpu_save sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	272 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	274 hal_diag_excpt_start
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	275
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	277 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	278
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 move s0,sp # save pointer to saved state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 addi sp,sp,-mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	283 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285 la ra,restore_state # load return address
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	286
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	287 hal_cpu_except_enable # reenable exceptions
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	288
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289 .extern exception_handler
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 j exception_handler # call C code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	291 move a0,s0 # arg0 = register dump (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293 # When the exception handler returns, it will
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	294 # go back to restore_state, below.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	296 FUNC_END(__default_exception_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	297
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	298 ##------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299 ## Default interrupt VSR.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	300 ## Saves machine state and calls appropriate ISR. When done, calls
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301 ## interrupt_end() to finish up and possibly reschedule.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	303 FUNC_START(__default_interrupt_vsr)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306 # We enter here with all of the CPU state still
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 # in its registers except:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308 # K0 = vector index
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	309 # K1 = address of this function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	310
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	311 move k1,sp # K1 = original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	312
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 addi sp,sp,-mips_exception_decrement
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 # space for registers + safety margin
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316 sw k0,mipsreg_vector(sp) # store vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	317
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318 # store GPRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319 sw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320 sw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 sw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322 sw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 sw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 sw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 sw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326 sw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 sw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 sw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 sw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330 sw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	331 sw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	332 sw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	333 sw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	334 sw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	335 sw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	336 sw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337 sw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	338 sw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	339 sw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	340 sw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 sw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	342 sw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	343 sw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344 sw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 # sw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	346 # sw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	347 sw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	348 # sw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 sw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	350 sw $31,(mipsreg_regs+31*4)(sp) # == RA
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	351
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352 mfhi a0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353 mflo a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	354 sw a0,mipsreg_hi(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	355 sw a1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	356
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	357 # K1 contains original SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	358 sw k1,(mipsreg_regs+29*4)(sp) # store in reg dump
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	359
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	360 mfc0 t1,status
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	361 mfc0 t2,cache
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	362 mfc0 t3,epc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	363
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	364 sw t1,mipsreg_sr(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	365 sw t2,mipsreg_cache(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	366 sw t3,mipsreg_pc(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	367
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	368 hal_fpu_save sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	369
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	370 # The machine state is now all saved on the stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	371
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	372 hal_diag_intr_start
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	373
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374 # Load Global Pointer register.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375 la gp,_gp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	376
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	377 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	378 .extern cyg_scheduler_sched_lock
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	379 la v0,cyg_scheduler_sched_lock
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	380 lw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	381 addi a0,a0,1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	382 sw a0,0(v0)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	383 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	384
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	385 move s0,sp # save pointer to saved state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	387 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	388
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	389 la a0,__interrupt_stack # a0 = stack top
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	390 la a1,__interrupt_stack_base # a1 = stack base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	391 sub a3,sp,a1 # a3 = sp - base
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	392 bltz a3,1f # if < 0 - not on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	393 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	394 sub t0,a0,sp # t0 = top - sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395 bgtz t0,8f # if > 0 - already on istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	396 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397 1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	398 move sp,a0 # switch to istack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399 8:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400 addi sp,sp,-4 # space for old SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401 sw s0,0(sp) # save old SP on stack
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	402
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	403 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	405 subu sp,sp,mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	406
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	407 # Need to set up back pointers etc. ???
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	408
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	409 # Decode external interrupt via interrupt controller
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	410
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	411 hal_intc_decode s2
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	412
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414 move s1,zero # Just vector zero is supported
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	415 #else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	416 move s1,s2 # Vector == interrupt number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	417 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	418
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	419 # Here s1 is the number of the vector to be called and s2 is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	420 # the number of the interrupt being serviced.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	421
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	422 #if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	423
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	424 # Call cyg_instrument to record that this interrupt is being raised.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	425
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	426 li a0,0x0301 # a0 = type = INTR,RAISE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	427 move a1,s1 # a1 = vector number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	428 jal cyg_instrument # call instrument function
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	429 xor a2,a2,a2 # arg2 = 0 (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	430 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	431
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	432 sll s1,s1,2 # s1 = byte offset of vector
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	433
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	434 la t2,hal_interrupt_handlers # handler table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	435 add t2,t2,s1 # address of ISR ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	436 lw t2,0(t2) # ISR pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	437
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	438 la a1,hal_interrupt_data # data table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	439 add a1,a1,s1 # address of data ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	440 lw a1,0(a1) # Data pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	441
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	442 move a0,s2 # pass interrupt number
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	443
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	444 move a2,s0 # arg3 = saved register dump
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	445
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	446 jalr t2 # call ISR via t2
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	447 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	448
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	449 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	450
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	451 # If we are returning from the last nested interrupt, move back
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	452 # to the thread stack. interrupt_end() must be called on the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	453 # thread stack since it potentially causes a context switch.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	454 # Since we have arranged for the top of stack location to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	455 # contain the sp we need to go back to here, just pop it off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	456 # and put it in SP.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	457
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	458
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	459 lw sp,mips_stack_frame_size(sp) # sp = *sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	460 subu sp,sp,mips_stack_frame_size # make a null frame
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	461 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	462
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	463 #ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	464
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	465 # We only need to call _interrupt_end() when there is a kernel
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	466 # present to do any tidying up.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	467
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	468 # On return v0 bit 1 will indicate whether a DSR is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	469 # to be posted. Pass this together with a pointer to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	470 # the interrupt object we have just used to the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	471 # interrupt tidy up routine.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	472
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	473 # Note that s0, s1 and s2 are defined to be preserved across
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	474 # calls by the calling convention, so they still contain
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	475 # the register dump, the vector offset and the interrupt number
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	476 # respectively.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	477
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	478 move a0,v0 # put ISR result in arg0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	479
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	480 la a1,hal_interrupt_objects # interrupt object table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	481 add a1,a1,s1 # address of object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	482 lw a1,0(a1) # a1 = object ptr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	483
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	484 move a2,s0 # arg3 = saved register dump
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	485
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	486 .extern interrupt_end
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	487 jal interrupt_end # call into C to finish off
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	488 nop # (delay slot)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	489
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	490 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	491
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	492 restore_state:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	493
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	494 # All done, restore CPU state and continue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	495
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	496 addi sp,sp,mips_stack_frame_size # retrieve CPU state ptr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	497
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	498 # Disable interrupts again while we restore state.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	499
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	500 hal_diag_restore
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	501
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	502 hal_fpu_load sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	503
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	504 lw t0,mipsreg_cache(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	505 lw t1,mipsreg_hi(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	506 lw t2,mipsreg_lo(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	507
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	508 mtc0 t0,cache
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	509 mthi t1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	510 mtlo t2
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	511
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	512 # load GPRs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	513 # lw $0,(mipsreg_regs+0*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	514 lw $1,(mipsreg_regs+1*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	515 lw $2,(mipsreg_regs+2*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	516 lw $3,(mipsreg_regs+3*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	517 lw $4,(mipsreg_regs+4*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	518 lw $5,(mipsreg_regs+5*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	519 lw $6,(mipsreg_regs+6*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	520 lw $7,(mipsreg_regs+7*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	521 lw $8,(mipsreg_regs+8*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	522 lw $9,(mipsreg_regs+9*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	523 lw $10,(mipsreg_regs+10*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	524 lw $11,(mipsreg_regs+11*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	525 lw $12,(mipsreg_regs+12*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	526 lw $13,(mipsreg_regs+13*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	527 lw $14,(mipsreg_regs+14*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	528 lw $15,(mipsreg_regs+15*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	529 lw $16,(mipsreg_regs+16*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	530 lw $17,(mipsreg_regs+17*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	531 lw $18,(mipsreg_regs+18*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	532 lw $19,(mipsreg_regs+19*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	533 lw $20,(mipsreg_regs+20*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	534 lw $21,(mipsreg_regs+21*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	535 lw $22,(mipsreg_regs+22*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	536 lw $23,(mipsreg_regs+23*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	537 lw $24,(mipsreg_regs+24*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	538 lw $25,(mipsreg_regs+25*4)(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	539 # lw $26,(mipsreg_regs+26*4)(sp) # == K0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	540 # lw $27,(mipsreg_regs+27*4)(sp) # == K1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	541 lw $28,(mipsreg_regs+28*4)(sp) # == GP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	542 # lw $29,(mipsreg_regs+29*4)(sp) # == SP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	543 lw $30,(mipsreg_regs+30*4)(sp) # == FP
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	544 lw $31,(mipsreg_regs+31*4)(sp) # == RA
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	545
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	546 lw k0,mipsreg_pc(sp) # K0 = return PC
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	547 lw k1,mipsreg_sr(sp) # K1 = saved SR
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	548 lw sp,(mipsreg_regs+29*4)(sp) # load SP
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	549
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	550 # Invoke CPU specific mechanism for returning from this
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	551 # exception
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	552
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	553 hal_cpu_eret k0,k1
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	554
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	555 FUNC_END(__default_interrupt_vsr)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	556
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	557 hal_intc_decode_data
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	558
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	559 ##-----------------------------------------------------------------------------
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	560 ## Execute pending DSRs on the interrupt stack with interrupts enabled.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	561 ## Note: this can only be called from code running on a thread stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	562
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	563 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	564 .extern cyg_interrupt_call_pending_DSRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	565
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	566 FUNC_START(hal_interrupt_stack_call_pending_DSRs)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	567 mfc0 t0,status # get status register value
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	568 la v0,__interrupt_stack # v0 = interrupt stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	569 move v1,sp # v1 = original stack ptr
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	570 move sp,v0 # sp = interrupt stack
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	571 addi sp,sp,-32 # make a null frame
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	572 sw v1,16(sp) # save old sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	573 sw ra,20(sp) # save old ra
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	574 sw t0,24(sp) # save old sr
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	575
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	576 hal_cpu_int_enable
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	577
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	578 jal cyg_interrupt_call_pending_DSRs # call back to kernel
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	579 nop
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	580
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	581 lw a0,24(sp) # get status reg
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	582
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	583 hal_cpu_int_merge a0 # merge with current SR
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	584
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	585 lw ra,20(sp) # restore ra
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	586 lw sp,16(sp) # restore sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	587
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	588 jr ra # go back
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	589 nop # delay slot
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	590
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	591 FUNC_END(hal_interrupt_stack_call_pending_DSRs)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	592 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	593
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	594
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	595 // Short circuit in case any code tries to use "__gccmain()"
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	596 FUNC_START(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	597 jr ra
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	598 FUNC_END(__gccmain)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	599
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	600
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	601 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	602 ## Interrupt Stack.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	603 ## Used during intialization and for executing ISRs.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	604
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	605 .bss
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	606
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	607 .balign 16
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	608 __interrupt_stack_base:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	609 .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	610 .byte 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	611 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	612 .balign 16
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	613 __interrupt_stack:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	614
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	615 .long 0,0,0,0,0,0,0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	616
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	617 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	618 ## VSR table.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	619 ## The main interrupt code indirects through here to find the VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	620 ## to execute for each architecture defined interrupt.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	621 ## This is only used for simulated targets, on real targets a fixed location VSR
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	622 ## table is now allocated at 0x80000100.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	623
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	624 #ifndef CYG_HAL_MIPS_VSR_TABLE_DEFINED
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	625
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	626 ## .section ".vsr_table","a"
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	627
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	628 .data
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	629
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	630 .globl hal_vsr_table
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	631
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	632 hal_vsr_table:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	633 .long __default_interrupt_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	634 .rept 63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	635 .long __default_exception_vsr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	636 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	637
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	638 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	639
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	640 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	641 # Interrupt vector tables.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	642 # These tables contain the isr, data and object pointers used to deliver
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	643 # interrupts to user code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	644 # hal_interrupt_level contains the interrupt level set by
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	645 # HAL_INTERRUPT_CONFIGURE().
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	646 # This is a default set that provide support only for the 6 external
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	647 # interrupts in the status/cause registers. Platforms or boards are expected
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	648 # to define their own versions of these if they have their own interrupt mappings.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	649
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	650 #ifndef CYG_HAL_MIPS_ISR_TABLES_DEFINED
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	651
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	652 .extern hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	653
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	654 .data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	655
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	656 .globl hal_interrupt_handlers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	657 hal_interrupt_handlers:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	658 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	659 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	660 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	661 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	662 .long hal_default_isr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	663 .long hal_default_isr
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	664
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	665
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	666 .globl hal_interrupt_data
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	667 hal_interrupt_data:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	668 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	669 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	670 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	671
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	672 .globl hal_interrupt_objects
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	673 hal_interrupt_objects:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	674 .rept 6
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	675 .long 0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	676 .endr
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	677
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	678 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	679
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	680 ##-----------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	681 ## end of vectors.S
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	682
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	683

Mercurial > flash_v2

annotate packages/hal/mips/arch/current/src/vectors.S @ 6:d376b777e2ce ecos-sw-1999-05-14