Mercurial > nand-ecoscentric

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge from eCos master repository on 1999-05-14-19:27:43-BST
author jlarmour
date Fri, 14 May 1999 12:20:00 +0000
parents 443894e2e912
children ece80412419a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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####
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
8 #
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
9 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
10 # The contents of this file are subject to the Cygnus eCos Public License
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
11 # Version 1.0 (the "License"); you may not use this file except in
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
12 # compliance with the License. You may obtain a copy of the License at
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
13 # http://sourceware.cygnus.com/ecos
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
14 #
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
15 # Software distributed under the License is distributed on an "AS IS"
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
16 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
17 # License for the specific language governing rights and limitations under
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
18 # the License.
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
19 #
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
20 # The Original Code is eCos - Embedded Cygnus Operating System, released
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
21 # September 30, 1998.
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
22 #
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
23 # The Initial Developer of the Original Code is Cygnus. Portions created
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
24 # by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
25 # -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
26 #
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
27 #####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
28 ##=============================================================================
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
29 #######DESCRIPTIONBEGIN####
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 ## Author(s): nickg
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
32 ## Contributors: nickg
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
33 ## Date: 1998-04-27
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
34 ## Purpose: MIPS context switch code
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
35 ## Description: This file contains implementations of the thread context
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
36 ## switch routines. It also contains the longjmp() and setjmp()
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
37 ## routines.
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
38 ##
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
39 ######DESCRIPTIONEND####
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 ##=============================================================================
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 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
44
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
45 #include <cyg/hal/arch.inc>
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
46
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
47 .set noat
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
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
61 #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
62 sw $0,(mipsreg_regs+0*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
63 sw $1,(mipsreg_regs+1*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
64 sw $2,(mipsreg_regs+2*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
65 sw $3,(mipsreg_regs+3*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
66 sw $4,(mipsreg_regs+4*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
67 sw $5,(mipsreg_regs+5*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
68 sw $6,(mipsreg_regs+6*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
69 sw $7,(mipsreg_regs+7*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
70 sw $8,(mipsreg_regs+8*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
71 sw $9,(mipsreg_regs+9*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
72 sw $10,(mipsreg_regs+10*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
73 sw $11,(mipsreg_regs+11*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
74 sw $12,(mipsreg_regs+12*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
75 sw $13,(mipsreg_regs+13*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
76 sw $14,(mipsreg_regs+14*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
77 sw $15,(mipsreg_regs+15*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
78 sw $24,(mipsreg_regs+24*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
79 sw $25,(mipsreg_regs+25*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
80 sw $28,(mipsreg_regs+28*mips_regsize)(sp) # == GP
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
81 #endif
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
82 sw $16,(mipsreg_regs+16*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
83 sw $17,(mipsreg_regs+17*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
84 sw $18,(mipsreg_regs+18*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
85 sw $19,(mipsreg_regs+19*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
86 sw $20,(mipsreg_regs+20*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
87 sw $21,(mipsreg_regs+21*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
88 sw $22,(mipsreg_regs+22*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
89 sw $23,(mipsreg_regs+23*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
90 # sw $26,(mipsreg_regs+26*mips_regsize)(sp) # == K0
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
91 # sw $27,(mipsreg_regs+27*mips_regsize)(sp) # == K1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
92 # sw $29,(mipsreg_regs+29*mips_regsize)(sp) # == SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
93 sw $30,(mipsreg_regs+30*mips_regsize)(sp) # == FP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
94 sw $31,(mipsreg_regs+31*mips_regsize)(sp) # == RA
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
95 sw $31,(mipsreg_pc)(sp) # == PC (to help with debugging)
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
96
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
97 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
98
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
99 mflo t0 # save LO and HI regs
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
100 mfhi t1
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
101 sw t0,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
102 sw t1,mipsreg_hi(sp)
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
103
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
104 #endif
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
105
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
106 hal_fpu_save_callee sp
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
107
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
108 #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
109
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
110 hal_fpu_save_caller sp
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 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
113
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
114 addi t0,sp,mipsreg_size # save SP in reg dump
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
115 sw t0,(mipsreg_regs+29*mips_regsize)(sp)
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
116
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
117 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
118 sw t1,mipsreg_sr(sp)
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 sw sp,0(a1) # save sp in save loc
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
121
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
122 # Now load the destination thread by dropping through
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
123 # to hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
124
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
125 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
126 # hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
127 # Load thread context
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
128 # A0 = address of sp of next thread to execute
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
129 # 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
130 # and is simply dropped into from it.
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 .global hal_thread_load_context
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
133 hal_thread_load_context:
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
134
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
135 lw sp,0(a0) # load new SP directly
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 #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
138
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
139 hal_fpu_load_caller sp
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 #endif
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 hal_fpu_load_callee sp
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 #ifndef CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
0
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 lw t0,mipsreg_hi(sp) # load HI and LO regs
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
148 lw t1,mipsreg_lo(sp)
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
149 mthi t0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
150 mtlo t1
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 #endif
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
153
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
154 # load GPRs
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
155 # lw $0,(mipsreg_regs+0*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
156 lw $4,(mipsreg_regs+4*mips_regsize)(sp) # A0, must load for thread startup
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
157 #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
158 lw $1,(mipsreg_regs+1*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
159 lw $2,(mipsreg_regs+2*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
160 lw $3,(mipsreg_regs+3*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
161 lw $5,(mipsreg_regs+5*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
162 lw $6,(mipsreg_regs+6*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
163 lw $7,(mipsreg_regs+7*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
164 lw $8,(mipsreg_regs+8*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
165 lw $9,(mipsreg_regs+9*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
166 lw $10,(mipsreg_regs+10*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
167 lw $11,(mipsreg_regs+11*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
168 lw $12,(mipsreg_regs+12*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
169 lw $13,(mipsreg_regs+13*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
170 lw $14,(mipsreg_regs+14*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
171 lw $15,(mipsreg_regs+15*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
172 lw $24,(mipsreg_regs+24*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
173 lw $25,(mipsreg_regs+25*mips_regsize)(sp)
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
174 #endif
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
175 lw $16,(mipsreg_regs+16*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
176 lw $17,(mipsreg_regs+17*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
177 lw $18,(mipsreg_regs+18*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
178 lw $19,(mipsreg_regs+19*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
179 lw $20,(mipsreg_regs+20*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
180 lw $21,(mipsreg_regs+21*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
181 lw $22,(mipsreg_regs+22*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
182 lw $23,(mipsreg_regs+23*mips_regsize)(sp)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
183 # lw $26,(mipsreg_regs+26*mips_regsize)(sp) # == K0
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
184 # lw $27,(mipsreg_regs+27*mips_regsize)(sp) # == K1
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
185 # lw $28,(mipsreg_regs+28*mips_regsize)(sp) # == GP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
186 # lw $29,(mipsreg_regs+29*mips_regsize)(sp) # == SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
187 lw $30,(mipsreg_regs+30*mips_regsize)(sp) # == FP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
188 lw $31,(mipsreg_regs+31*mips_regsize)(sp) # == RA
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
189
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
190 lw a2,mipsreg_sr(sp) # A2 = saved SR
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
191 lw sp,(mipsreg_regs+29*mips_regsize)(sp) # SP = saved SP
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
192
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
193 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
194
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
195 jr ra # return via ra
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
196 nop # delay slot - must be nop
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
197
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
198 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
199 # HAL longjmp, setjmp implementations
2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
200 # 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
201 # into buffer supplied in a0[arg0]
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
202 # 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
203 # remember to update both sets.
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
204
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
205 #define CYGARC_JMP_BUF_SP 0
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
206 #define CYGARC_JMP_BUF_R16 1
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
207 #define CYGARC_JMP_BUF_R17 2
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
208 #define CYGARC_JMP_BUF_R18 3
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
209 #define CYGARC_JMP_BUF_R19 4
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
210 #define CYGARC_JMP_BUF_R20 5
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
211 #define CYGARC_JMP_BUF_R21 6
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
212 #define CYGARC_JMP_BUF_R22 7
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
213 #define CYGARC_JMP_BUF_R23 8
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
214 #define CYGARC_JMP_BUF_R28 9
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
215 #define CYGARC_JMP_BUF_R30 10
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
216 #define CYGARC_JMP_BUF_R31 11
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
217
443894e2e912 Block commit of eCos version 1.2.1
jlarmour
parents: 0
diff changeset
218 #define CYGARC_JMP_BUF_SIZE 12
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
219
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
220 .globl hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
221 .ent hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
222 hal_setjmp:
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
223 sw $31,CYGARC_JMP_BUF_R31*mips_regsize(a0) # ra (link)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
224 sw $30,CYGARC_JMP_BUF_R30*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
225 sw $28,CYGARC_JMP_BUF_R28*mips_regsize(a0) # gp, optimize out?
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
226 sw $23,CYGARC_JMP_BUF_R23*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
227 sw $22,CYGARC_JMP_BUF_R22*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
228 sw $21,CYGARC_JMP_BUF_R21*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
229 sw $20,CYGARC_JMP_BUF_R20*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
230 sw $19,CYGARC_JMP_BUF_R19*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
231 sw $18,CYGARC_JMP_BUF_R18*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
232 sw $17,CYGARC_JMP_BUF_R17*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
233 sw $16,CYGARC_JMP_BUF_R16*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
234 sw sp,CYGARC_JMP_BUF_SP*mips_regsize(a0) # $29
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
235 li v0,0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
236 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
237 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
238 .end hal_setjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
239
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
240 .globl hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
241 .ent hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
242 hal_longjmp:
6
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
243 lw $31,CYGARC_JMP_BUF_R31*mips_regsize(a0) # ra (link)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
244 lw $30,CYGARC_JMP_BUF_R30*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
245 lw $28,CYGARC_JMP_BUF_R28*mips_regsize(a0) # gp, optimize out?
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
246 lw $23,CYGARC_JMP_BUF_R23*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
247 lw $22,CYGARC_JMP_BUF_R22*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
248 lw $21,CYGARC_JMP_BUF_R21*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
249 lw $20,CYGARC_JMP_BUF_R20*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
250 lw $19,CYGARC_JMP_BUF_R19*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
251 lw $18,CYGARC_JMP_BUF_R18*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
252 lw $17,CYGARC_JMP_BUF_R17*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
253 lw $16,CYGARC_JMP_BUF_R16*mips_regsize(a0)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST
jlarmour
parents: 2
diff changeset
254 lw sp,CYGARC_JMP_BUF_SP*mips_regsize(a0) # $29
0
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
255 move v0,a1
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
256 jr ra
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
257 nop # delay slot
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
258 .end hal_longjmp
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
259
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
260
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
261 #------------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1
jlarmour
parents:
diff changeset
262 # end of context.S