Subversion Repositories HelenOS-historic

Rev

Rev 1 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1 Rev 306
1 
#
 1 
#
2 
# Copyright (C) 2001-2004 Jakub Jermar
 2 
# Copyright (C) 2001-2004 Jakub Jermar
3 
# All rights reserved.
 3 
# All rights reserved.
4 
#
 4 
#
5 
# Redistribution and use in source and binary forms, with or without
 5 
# Redistribution and use in source and binary forms, with or without
6 
# modification, are permitted provided that the following conditions
 6 
# modification, are permitted provided that the following conditions
7 
# are met:
 7 
# are met:
8 
#
 8 
#
9 
# - Redistributions of source code must retain the above copyright
 9 
# - Redistributions of source code must retain the above copyright
10 
#   notice, this list of conditions and the following disclaimer.
 10 
#   notice, this list of conditions and the following disclaimer.
11 
# - Redistributions in binary form must reproduce the above copyright
 11 
# - Redistributions in binary form must reproduce the above copyright
12 
#   notice, this list of conditions and the following disclaimer in the
 12 
#   notice, this list of conditions and the following disclaimer in the
13 
#   documentation and/or other materials provided with the distribution.
 13 
#   documentation and/or other materials provided with the distribution.
14 
# - The name of the author may not be used to endorse or promote products
 14 
# - The name of the author may not be used to endorse or promote products
15 
#   derived from this software without specific prior written permission.
 15 
#   derived from this software without specific prior written permission.
16 
#
 16 
#
17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
#
 27 
#
28 
 
 28 
 
- 
 
 29 
#define __ASM__
29 
#include <arch/asm/macro.h>
 30 
#include <arch/asm/regname.h>
- 
 
 31 
#include "context_offset.h"
30 
 
 32
31 
.text
33 
.text
32 
 
 34 
 
33 
.set noat
 35 
.set noat
34 
.set noreorder
 36 
.set noreorder
35 
.set nomacro
 37 
.set nomacro
36 
 
 38 
 
37 
.global context_save
 39 
.global context_save
38 
.global context_restore
 40 
.global context_restore
39 
 
 41 
 
- 
 
 42 
.macro CONTEXT_STORE r
- 
 
 43 
	sw $s0,OFFSET_S0(\r)
- 
 
 44 
	sw $s1,OFFSET_S1(\r)
- 
 
 45 
	sw $s2,OFFSET_S2(\r)
- 
 
 46 
	sw $s3,OFFSET_S3(\r)
- 
 
 47 
	sw $s4,OFFSET_S4(\r)
- 
 
 48 
	sw $s5,OFFSET_S5(\r)
- 
 
 49 
	sw $s6,OFFSET_S6(\r)
- 
 
 50 
	sw $s7,OFFSET_S7(\r)
- 
 
 51 
	sw $s8,OFFSET_S7(\r)
- 
 
 52 
	sw $gp,OFFSET_GP(\r)
- 
 
 53
- 
 
 54 
	sw $ra,OFFSET_PC(\r)
- 
 
 55 
	sw $sp,OFFSET_SP(\r)
- 
 
 56 
.endm
- 
 
 57 
 
- 
 
 58 
.macro CONTEXT_LOAD r
- 
 
 59 
	lw $s0,OFFSET_S0(\r)
- 
 
 60 
	lw $s1,OFFSET_S1(\r)
- 
 
 61 
	lw $s2,OFFSET_S2(\r)
- 
 
 62 
	lw $s3,OFFSET_S3(\r)
- 
 
 63 
	lw $s4,OFFSET_S4(\r)
- 
 
 64 
	lw $s5,OFFSET_S5(\r)
- 
 
 65 
	lw $s6,OFFSET_S6(\r)
- 
 
 66 
	lw $s7,OFFSET_S7(\r)
- 
 
 67 
	lw $s8,OFFSET_S7(\r)
- 
 
 68 
	lw $gp,OFFSET_GP(\r)
- 
 
 69
- 
 
 70 
	lw $ra,OFFSET_PC(\r)
- 
 
 71 
	lw $sp,OFFSET_SP(\r)
- 
 
 72 
.endm
- 
 
 73 
 
- 
 
 74
40 
context_save:
 75 
context_save:
41 
	REGISTERS_STORE $4
 76 
	CONTEXT_STORE $a0
42 
 
 77 
 
43 
	# context_save returns 1
 78 
	# context_save returns 1
44 
	j $31
 79 
	j $31
45 
	li $2, 1
80 
	li $2, 1
46
81
47 
context_restore:
 82 
context_restore:
48 
	REGISTERS_LOAD $4
 83 
	CONTEXT_LOAD $a0
49 
 
 84 
 
50 
	# context_restore returns 0
 85 
	# context_restore returns 0
51 
	j $31
 86 
	j $31
52 
	xor $2, $2
87 
	xor $2, $2
53 
 
 88