1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* Jump to a new context.
Copyright (C) 2002-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <rtld-global-offsets.h>
#include <shlib-compat.h>
#define __ASSEMBLY__
#include <asm/ptrace.h>
#include "ucontext_i.h"
#define __CONTEXT_FUNC_NAME __setcontext
#define __CONTEXT_ENABLE_FPRS 1
#define __CONTEXT_ENABLE_VRS 1
/* Size of ucontext in GLIBC_2.3.4 and later. */
#define _UC_SIZE_2_3_4 1184
.section ".text";
ENTRY (__setcontext)
mr r4,r3
li r3,0
li r5,_UC_SIZE_2_3_4;
DO_CALL (SYS_ify (swapcontext));
bso- cr0,1f
/* the kernel does not set the return code for the success case */
li r3,0
blr
1:
b __syscall_error@local
END(__setcontext)
versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4)
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
compat_text_section
# undef __CONTEXT_FUNC_NAME
# define __CONTEXT_FUNC_NAME __novec_setcontext
# undef __CONTEXT_ENABLE_VRS
# include "setcontext-common.S"
.previous
compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3)
#endif
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3)
# define _ERRNO_H 1
# include <bits/errno.h>
compat_text_section
ENTRY (__setcontext_stub)
li r3,ENOSYS
b __syscall_error@local
END (__setcontext_stub)
.previous
compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_0)
#endif
|
