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

annotate packages/hal/mips/arch/current/src/context.S @ 112:02ea4320376c ecos-sw-2000-07-21

Merge from eCos master repository on 2000-07-21-21:01:39-BST

author	jlarmour
date	Fri, 21 Jul 2000 21:34:11 +0000
parents	435cced73e2f
children	e0c0827131d1

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
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	49 #ifdef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	50 #undef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	51 #endif
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	52
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 # hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55 # Switch thread contexts
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 # A1 = address of sp save location of current thread
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 .global hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60 hal_thread_switch_context:
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 addi sp,sp,-mipsreg_size # space for registers
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 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	65 .set noat
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66 #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	67 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	68 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	69 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	70 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	71 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	72 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	73 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	74 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	75 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	76 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	77 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	78 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	79 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	80 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	81 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	82 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	83 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	84 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	85 sgpr 28,sp # == GP
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	87 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	88 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	89 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	90 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	91 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	92 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	93 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	94 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	95 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	96 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	97 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	98 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	99 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	100 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	101 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	102
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 mflo t0 # save LO and HI regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 mfhi t1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	107 slo t0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	108 shi t1,sp
0 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 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	112 hal_fpu_save_callee 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 #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	115
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	116 hal_fpu_save_caller sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	117
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	118 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	119
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 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	121 ssp t0,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	123 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	124 sw t1,mipsreg_sr(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	125
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126 sw sp,0(a1) # save sp in save loc
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 # Now load the destination thread by dropping through
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 # to hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 # hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 # Load thread context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 # 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	136 # and is simply dropped into from it.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 .global hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139 hal_thread_load_context:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 lw sp,0(a0) # load new SP directly
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 #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	144
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	145 hal_fpu_load_caller 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 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	148
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	149 hal_fpu_load_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	150
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	151 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153 lw t0,mipsreg_hi(sp) # load HI and LO regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 lw t1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 mthi t0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 mtlo t1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 #endif
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	159
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 # load GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	161 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	162 # lgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	163 lgpr 4,sp # A0, must load for thread startup
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 #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	165 lgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	166 lgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	167 lgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	168 lgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	169 lgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	170 lgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	171 lgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	172 lgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	173 lgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	174 lgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	175 lgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	176 lgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	177 lgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	178 lgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	179 lgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	180 lgpr 25,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	182 lgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	183 lgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	184 lgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	185 lgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	186 lgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	187 lgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	188 lgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	189 lgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	190 # lgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	191 # lgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	192 # lgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	193 # lgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	194 lgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	195 lgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	196 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	197
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	198 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	199 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	200
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	201 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	202
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 jr ra # return via ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 nop # delay slot - must be nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 # HAL longjmp, setjmp implementations
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	208 # 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	209 # into buffer supplied in a0[arg0]
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	210 # 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	211 # remember to update both sets.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	212
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	213 #define CYGARC_JMP_BUF_SP 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	214 #define CYGARC_JMP_BUF_R16 1
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	215 #define CYGARC_JMP_BUF_R17 2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	216 #define CYGARC_JMP_BUF_R18 3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	217 #define CYGARC_JMP_BUF_R19 4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	218 #define CYGARC_JMP_BUF_R20 5
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	219 #define CYGARC_JMP_BUF_R21 6
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	220 #define CYGARC_JMP_BUF_R22 7
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	221 #define CYGARC_JMP_BUF_R23 8
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	222 #define CYGARC_JMP_BUF_R28 9
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	223 #define CYGARC_JMP_BUF_R30 10
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	224 #define CYGARC_JMP_BUF_R31 11
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	225
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	226 #define CYGARC_JMP_BUF_SIZE 12
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	228 // 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	229 // 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	230 // 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	231 // 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	232
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	233 #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	234
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 .globl hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236 .ent hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	237 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	238 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	239 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	240 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	241 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	242 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	243 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	244 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	245 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	246 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	247 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	248 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	249 sw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 li v0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 .end hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255 .globl hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256 .ent hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 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	258 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	259 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	260 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	261 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	262 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	263 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	264 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	265 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	266 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	267 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	268 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	269 lw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270 move v0,a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	272 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 .end hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	274
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	275
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	277 # end of context.S

Mercurial > flash_v2

annotate packages/hal/mips/arch/current/src/context.S @ 112:02ea4320376c ecos-sw-2000-07-21