ecos: packages/hal/mips/arch/current/src/context.S annotate

annotate packages/hal/mips/arch/current/src/context.S @ 76:435cced73e2f ecos-v1_3_1-release

eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST

author	jlarmour
date	Tue, 28 Mar 2000 14:10:45 +0000
parents	bf00f99aec69
children	02ea4320376c

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 ## context.S
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 ## MIPS context switch code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 ##
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 #####COPYRIGHTBEGIN####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	8 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	9 # -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	10 # The contents of this file are subject to the Red Hat eCos Public License
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	11 # Version 1.1 (the "License"); you may not use this file except in
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	12 # compliance with the License. You may obtain a copy of the License at
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	13 # http://www.redhat.com/
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	14 #
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	15 # Software distributed under the License is distributed on an "AS IS"
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	16 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	17 # License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	18 # the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	19 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	20 # The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	21 # released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	22 #
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	23 # The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	24 # Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	25 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	26 # All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	27 # -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	28 #
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	29 #####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	31 #######DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	32 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	35 ## Date: 1998-04-27
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	36 ## Purpose: MIPS context switch code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	37 ## Description: This file contains implementations of the thread context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	38 ## switch routines. It also contains the longjmp() and setjmp()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 ## routines.
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/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	47 #include <cyg/hal/arch.inc>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 # hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 # Switch thread contexts
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 # A1 = address of sp save location of current thread
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55 .global hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 hal_thread_switch_context:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58 addi sp,sp,-mipsreg_size # space for registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	61 .set noat
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	63 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	64 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	65 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	66 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	67 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	68 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	69 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	70 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	71 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	72 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	73 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	74 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	75 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	76 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	77 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	78 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	79 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	80 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	81 sgpr 28,sp # == GP
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	82 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	83 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	84 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	85 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	86 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	87 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	88 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	89 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	90 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	91 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	92 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	93 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	94 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	95 sgpr 31,sp # == RA
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	96 spc $31,sp # == PC (to help with debugging)
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	97 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	98
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 mflo t0 # save LO and HI regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 mfhi t1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	103 slo t0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	104 shi t1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	108 hal_fpu_save_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	109
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	110 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	111
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	112 hal_fpu_save_caller sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	113
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	114 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	115
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 addi t0,sp,mipsreg_size # save SP in reg dump
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	117 ssp t0,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	119 mfc0 t1,status # Save status register
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	120 sw t1,mipsreg_sr(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	121
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 sw sp,0(a1) # save sp in save loc
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 # Now load the destination thread by dropping through
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125 # to hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 # hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 # Load thread context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 # Note that this function is also the second half of hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 # and is simply dropped into from it.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 .global hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 hal_thread_load_context:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 lw sp,0(a0) # load new SP directly
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 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	140
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	141 hal_fpu_load_caller sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	142
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	143 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	144
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	145 hal_fpu_load_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	146
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	147 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149 lw t0,mipsreg_hi(sp) # load HI and LO regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 lw t1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 mthi t0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 mtlo t1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 #endif
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	155
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 # load GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	157 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	158 # lgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	159 lgpr 4,sp # A0, must load for thread startup
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	161 lgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	162 lgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	163 lgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	164 lgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	165 lgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	166 lgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	167 lgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	168 lgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	169 lgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	170 lgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	171 lgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	172 lgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	173 lgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	174 lgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	175 lgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	176 lgpr 25,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	178 lgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	179 lgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	180 lgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	181 lgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	182 lgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	183 lgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	184 lgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	185 lgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	186 # lgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	187 # lgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	188 # lgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	189 # lgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	190 lgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	191 lgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	192 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	193
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	194 lw a2,mipsreg_sr(sp) # A2 = saved SR
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	195 lsp sp,sp # SP = saved SP
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	196
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	197 hal_cpu_int_merge a2 # Merge with current SR
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	198
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 jr ra # return via ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 nop # delay slot - must be nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201
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 # HAL longjmp, setjmp implementations
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	204 # hal_setjmp saves only to callee save registers 16-23, 28, 30, 31[ra], 29[sp]
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	205 # into buffer supplied in a0[arg0]
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	206 # Note: These definitions are repeated in hal_arch.h. If changes are required
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	207 # remember to update both sets.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	208
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	209 #define CYGARC_JMP_BUF_SP 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	210 #define CYGARC_JMP_BUF_R16 1
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	211 #define CYGARC_JMP_BUF_R17 2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	212 #define CYGARC_JMP_BUF_R18 3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	213 #define CYGARC_JMP_BUF_R19 4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	214 #define CYGARC_JMP_BUF_R20 5
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	215 #define CYGARC_JMP_BUF_R21 6
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	216 #define CYGARC_JMP_BUF_R22 7
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	217 #define CYGARC_JMP_BUF_R23 8
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	218 #define CYGARC_JMP_BUF_R28 9
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	219 #define CYGARC_JMP_BUF_R30 10
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	220 #define CYGARC_JMP_BUF_R31 11
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	221
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	222 #define CYGARC_JMP_BUF_SIZE 12
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	224 // FIXME: The follwing restricts us to using only 32 bit registers
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	225 // in jump buffers. If/when we move to a full 64 bit architecture,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	226 // this will need to change, as will the instructions that we use to
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	227 // save and restore them.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	228
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	229 #define jmpbuf_regsize 4
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	230
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231 .globl hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	232 .ent hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 hal_setjmp:
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	234 sw $31,CYGARC_JMP_BUF_R31*jmpbuf_regsize(a0) # ra (link)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	235 sw $30,CYGARC_JMP_BUF_R30*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	236 sw $28,CYGARC_JMP_BUF_R28*jmpbuf_regsize(a0) # gp, optimize out?
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	237 sw $23,CYGARC_JMP_BUF_R23*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	238 sw $22,CYGARC_JMP_BUF_R22*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	239 sw $21,CYGARC_JMP_BUF_R21*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	240 sw $20,CYGARC_JMP_BUF_R20*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	241 sw $19,CYGARC_JMP_BUF_R19*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	242 sw $18,CYGARC_JMP_BUF_R18*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	243 sw $17,CYGARC_JMP_BUF_R17*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	244 sw $16,CYGARC_JMP_BUF_R16*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	245 sw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 li v0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	247 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249 .end hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 .globl hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252 .ent hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 hal_longjmp:
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	254 lw $31,CYGARC_JMP_BUF_R31*jmpbuf_regsize(a0) # ra (link)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	255 lw $30,CYGARC_JMP_BUF_R30*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	256 lw $28,CYGARC_JMP_BUF_R28*jmpbuf_regsize(a0) # gp, optimize out?
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	257 lw $23,CYGARC_JMP_BUF_R23*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	258 lw $22,CYGARC_JMP_BUF_R22*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	259 lw $21,CYGARC_JMP_BUF_R21*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	260 lw $20,CYGARC_JMP_BUF_R20*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	261 lw $19,CYGARC_JMP_BUF_R19*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	262 lw $18,CYGARC_JMP_BUF_R18*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	263 lw $17,CYGARC_JMP_BUF_R17*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	264 lw $16,CYGARC_JMP_BUF_R16*jmpbuf_regsize(a0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	265 lw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 move v0,a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	269 .end hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270
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 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 # end of context.S

Mercurial > ecos

annotate packages/hal/mips/arch/current/src/context.S @ 76:435cced73e2f ecos-v1_3_1-release