mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 06:10:10 +00:00
46 lines
1.4 KiB
ArmAsm
46 lines
1.4 KiB
ArmAsm
/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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 <sysdep.h>
|
|
#include <errno.h>
|
|
#include <shlib-compat.h>
|
|
|
|
ENTRY (__pthread_spin_trylock)
|
|
movl 4(%esp), %edx
|
|
movl $1, %eax
|
|
xorl %ecx, %ecx
|
|
lock
|
|
cmpxchgl %ecx, (%edx)
|
|
movl $EBUSY, %eax
|
|
#ifdef HAVE_CMOV
|
|
cmovel %ecx, %eax
|
|
#else
|
|
jne 0f
|
|
movl %ecx, %eax
|
|
0:
|
|
#endif
|
|
ret
|
|
END (__pthread_spin_trylock)
|
|
versioned_symbol (libc, __pthread_spin_trylock, pthread_spin_trylock,
|
|
GLIBC_2_34)
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
|
|
compat_symbol (libpthread, __pthread_spin_trylock, pthread_spin_trylock,
|
|
GLIBC_2_2)
|
|
#endif
|