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
|
/* Swap two contexts. OpenRISC version.
Copyright (C) 2022-2024 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
<https://www.gnu.org/licenses/>. */
#include <shlib-compat.h>
#include <sysdep.h>
#include "ucontext_i.h"
#define __CONTEXT_FUNC_NAME __swapcontext
#define __CONTEXT_ENABLE_FPCSR 1
#define __CONTEXT_SIGMASK_OFFSET UCONTEXT_SIGMASK
#include "swapcontext-common.S"
versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_40)
#if SHLIB_COMPAT (libc, GLIBC_2_35, GLIBC_2_40)
/* Define a compat version of swapcontext for glibc's before the fpcsr
field was added to mcontext_t. The offset sigmask changed with this
introduction, the change was done because glibc's definition of
ucontext_t was initially defined incompatible with the Linux
definition of ucontext_t. We keep the compatability definition to
allow getcontext, setcontext and swapcontext to work in older
binaries. */
# undef __CONTEXT_FUNC_NAME
# undef __CONTEXT_ENABLE_FPCSR
# undef __CONTEXT_SIGMASK_OFFSET
# define __CONTEXT_FUNC_NAME __swapcontext_nofpcsr
# define __CONTEXT_SIGMASK_OFFSET (UCONTEXT_SIGMASK - 4)
# include "swapcontext-common.S"
compat_symbol (libc, __swapcontext_nofpcsr, swapcontext, GLIBC_2_35)
#endif
|
