source: trunk/sys/dietlibc/cpu/mipsel/__cpu_jmp.S @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

First import

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1# This file is part of MutekP.
2
3# MutekP is free software; you can redistribute it and/or modify it
4# under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 2 of the License, or
6# (at your option) any later version.
7
8# MutekP is distributed in the hope that it will be useful, but
9# WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11# General Public License for more details.
12
13# You should have received a copy of the GNU General Public License
14# along with MutekP; if not, write to the Free Software Foundation,
15# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
16
17# UPMC / LIP6 / SOC (c) 2007
18# Copyright Ghassan Almaless <ghassan.almaless@gmail.com>
19# Copyright Franck Wajsbürt <franck.wajsburt@lip6.fr>
20
21
22
23#-------------------------------------------------------
24# __setjmp:
25# save of current function context.
26# arguments:
27# $4: struct __jmp_buffer_s *buff
28#-------------------------------------------------------
29        .section .text,"ax", @progbits
30        .align 2
31        .globl __setjmp
32        .ent __setjmp
33
34__setjmp:
35        sw $16, 0*4($4)
36        sw $17, 1*4($4)
37        sw $18, 2*4($4)
38        sw $19, 3*4($4)
39        sw $20, 4*4($4)
40        sw $21, 5*4($4)
41        sw $22, 6*4($4)
42        sw $23, 7*4($4)
43        sw $28, 8*4($4)
44        sw $29, 9*4($4)
45        sw $30, 10*4($4)
46        sw $31, 11*4($4)
47        xor $2, $2, $2
48        jr $31
49        .end __setjmp
50
51#-------------------------------------------------------
52# __longjmp
53# resume previously saved context
54# arguments:
55# $4: struct __jmp_buffer_s *buff
56# $5: val
57#-------------------------------------------------------
58        .section .text,"ax", @progbits
59        .align 2
60
61        .globl __longjmp
62        .ent __longjmp
63
64__longjmp:
65        .set noreorder
66        lw $16, 0*4($4)
67        lw $17, 1*4($4)
68        lw $18, 2*4($4)
69        lw $19, 3*4($4)
70        lw $20, 4*4($4)
71        lw $21, 5*4($4)
72        lw $22, 6*4($4)
73        lw $23, 7*4($4)
74        lw $28, 8*4($4)
75        lw $29, 9*4($4) # get stack ptr
76        lw $31, 11*4($4)
77        bnez $5, __jmp_next
78        or $2, $0, $5
79        ori $2, $0, 1
80__jmp_next:
81        jr $31
82        lw $30, 10*4($4)
83        .set reorder
84        .end __longjmp
85
86#-------------------------------------------------------
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