blob: 23d1b385817101672e4c884a5cc70b3576aedebd (
plain) (
blame)
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
|
/* __thread_pointer definition. x86 version.
Copyright (C) 2021-2023 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/>. */
#ifndef _SYS_THREAD_POINTER_H
#define _SYS_THREAD_POINTER_H
static inline void *
__thread_pointer (void)
{
#if __GNUC_PREREQ (11, 1)
return __builtin_thread_pointer ();
#else
void *__result;
# ifdef __x86_64__
__asm__ ("mov %%fs:0, %0" : "=r" (__result));
# else
__asm__ ("mov %%gs:0, %0" : "=r" (__result));
# endif
return __result;
#endif /* !GCC 11 */
}
#endif /* _SYS_THREAD_POINTER_H */
|
