mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 06:50:07 +00:00
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* __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 */
|