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

annotate packages/hal/mips/arch/current/src/context.S @ 210:d2c90368aeef

Merge from eCos master repository on 2002-05-23-21:39:14-BST

author	jlarmour
date	Thu, 23 May 2002 22:59:51 +0000
parents	e0c0827131d1
children	74dbf4c3f2e1

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 ##=============================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 112 diff changeset	7 #####ECOSGPLCOPYRIGHTBEGIN####
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	8 ## -------------------------------------------
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	9 ## This file is part of eCos, the Embedded Configurable Operating System.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	10 ## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	11 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	12 ## eCos is free software; you can redistribute it and/or modify it under
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	13 ## the terms of the GNU General Public License as published by the Free
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	14 ## Software Foundation; either version 2 or (at your option) any later version.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	15 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	16 ## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	17 ## WARRANTY; without even the implied warranty of MERCHANTABILITY or
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	18 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	19 ## for more details.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	20 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	21 ## You should have received a copy of the GNU General Public License along
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	22 ## with eCos; if not, write to the Free Software Foundation, Inc.,
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	23 ## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	24 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	25 ## As a special exception, if other files instantiate templates or use macros
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	26 ## or inline functions from this file, or you compile this file and link it
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	27 ## with other works to produce a work based on this file, this file does not
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	28 ## by itself cause the resulting work to be covered by the GNU General Public
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	29 ## License. However the source code for this file must still be made available
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	30 ## in accordance with section (3) of the GNU General Public License.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	31 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	32 ## This exception does not invalidate any other reasons why a work based on
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	33 ## this file might be covered by the GNU General Public License.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	34 ##
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	35 ## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	36 ## at http://sources.redhat.com/ecos/ecos-license/
d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	37 ## -------------------------------------------
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 112 diff changeset	38 #####ECOSGPLCOPYRIGHTEND####
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 #######DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44 ## Date: 1998-04-27
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45 ## Purpose: MIPS context switch code
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46 ## Description: This file contains implementations of the thread context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47 ## switch routines. It also contains the longjmp() and setjmp()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 ## routines.
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 ######DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 ##
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	56 #include <cyg/hal/arch.inc>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	58 #ifdef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	59 #undef at
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	60 #endif
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 76 diff changeset	61
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63 # hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64 # Switch thread contexts
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66 # A1 = address of sp save location of current thread
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68 .global hal_thread_switch_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 hal_thread_switch_context:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	70
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	71 addi sp,sp,-mipsreg_size # space for registers
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	72
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73 # store GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	74 .set noat
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75 #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	76 sgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	77 sgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	78 sgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	79 sgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	80 sgpr 4,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	81 sgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	82 sgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	83 sgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	84 sgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	85 sgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	86 sgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	87 sgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	88 sgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	89 sgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	90 sgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	91 sgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	92 sgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	93 sgpr 25,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	94 sgpr 28,sp # == GP
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	96 sgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	97 sgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	98 sgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	99 sgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	100 sgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	101 sgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	102 sgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	103 sgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	104 # sgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	105 # sgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	106 # sgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	107 sgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	108 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	109 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	110 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	111
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 mflo t0 # save LO and HI regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 mfhi t1
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	116 slo t0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	117 shi t1,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	121 hal_fpu_save_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	122
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	123 #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	124
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	125 hal_fpu_save_caller sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	126
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	127 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	128
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 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	130 ssp t0,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	132 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	133 sw t1,mipsreg_sr(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	134
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 sw sp,0(a1) # save sp in save loc
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 # Now load the destination thread by dropping through
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 # to hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139
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 # hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142 # Load thread context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144 # 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	145 # and is simply dropped into from it.
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 .global hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 hal_thread_load_context:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 lw sp,0(a0) # load new SP directly
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 #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	153
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	154 hal_fpu_load_caller sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	155
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	156 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	157
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	158 hal_fpu_load_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	159
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	160 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 lw t0,mipsreg_hi(sp) # load HI and LO regs
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 lw t1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 mthi t0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 mtlo t1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 #endif
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	168
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 # load GPRs
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	170 .set noat
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	171 # lgpr 0,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	172 lgpr 4,sp # A0, must load for thread startup
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 #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	174 lgpr 1,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	175 lgpr 2,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	176 lgpr 3,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	177 lgpr 5,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	178 lgpr 6,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	179 lgpr 7,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	180 lgpr 8,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	181 lgpr 9,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	182 lgpr 10,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	183 lgpr 11,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	184 lgpr 12,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	185 lgpr 13,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	186 lgpr 14,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	187 lgpr 15,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	188 lgpr 24,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	189 lgpr 25,sp
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190 #endif
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	191 lgpr 16,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	192 lgpr 17,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	193 lgpr 18,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	194 lgpr 19,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	195 lgpr 20,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	196 lgpr 21,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	197 lgpr 22,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	198 lgpr 23,sp
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	199 # lgpr 26,sp # == K0
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	200 # lgpr 27,sp # == K1
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	201 # lgpr 28,sp # == GP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	202 # lgpr 29,sp # == SP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	203 lgpr 30,sp # == FP
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 8 diff changeset	204 lgpr 31,sp # == RA
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	205 .set at
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 6 diff changeset	206
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	207 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	208 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	209
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	210 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	211
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212 jr ra # return via ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213 nop # delay slot - must be nop
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 # HAL longjmp, setjmp implementations
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	217 # 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	218 # into buffer supplied in a0[arg0]
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	219 # 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	220 # remember to update both sets.
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_SP 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	223 #define CYGARC_JMP_BUF_R16 1
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	224 #define CYGARC_JMP_BUF_R17 2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	225 #define CYGARC_JMP_BUF_R18 3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	226 #define CYGARC_JMP_BUF_R19 4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	227 #define CYGARC_JMP_BUF_R20 5
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	228 #define CYGARC_JMP_BUF_R21 6
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	229 #define CYGARC_JMP_BUF_R22 7
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	230 #define CYGARC_JMP_BUF_R23 8
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	231 #define CYGARC_JMP_BUF_R28 9
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	232 #define CYGARC_JMP_BUF_R30 10
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	233 #define CYGARC_JMP_BUF_R31 11
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	234
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	235 #define CYGARC_JMP_BUF_SIZE 12
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	237 // 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	238 // 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	239 // 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	240 // 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	241
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: 66 diff changeset	242 #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	243
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244 .globl hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245 .ent hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 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	247 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	248 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	249 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	250 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	251 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	252 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	253 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	254 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	255 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	256 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	257 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	258 sw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 li v0,0
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 .end hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	263
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 .globl hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265 .ent hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 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	267 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	268 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	269 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	270 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	271 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	272 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	273 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	274 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	275 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	276 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	277 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	278 lw sp,CYGARC_JMP_BUF_SP*jmpbuf_regsize(a0) # $29
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 move v0,a1
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282 .end hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	283
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 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 # end of context.S

Mercurial > ecos

annotate packages/hal/mips/arch/current/src/context.S @ 210:d2c90368aeef