ee6189855a
equivalent, but shorter instructions. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/swapcontext.S: Likewise. * sysdeps/unix/x86_64/sysdep.S: Likewise. * sysdeps/x86_64/strchr.S: Likewise. * sysdeps/x86_64/memset.S: Likewise. * sysdeps/x86_64/strcspn.S: Likewise. * sysdeps/x86_64/strcmp.S: Likewise. * sysdeps/x86_64/elf/start.S: Likewise. * sysdeps/x86_64/strspn.S: Likewise. * sysdeps/x86_64/dl-machine.h: Likewise. * sysdeps/x86_64/bsd-_setjmp.S: Likewise. * sysdeps/x86_64/bsd-setjmp.S: Likewise. * sysdeps/x86_64/strtok.S: Likewise.
67 lines
1.5 KiB
ArmAsm
67 lines
1.5 KiB
ArmAsm
/* Copyright (C) 2002, 2003, 2005 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <shlib-compat.h>
|
|
#include <pthread-errnos.h>
|
|
|
|
#ifndef UP
|
|
# define LOCK lock
|
|
#else
|
|
# define
|
|
#endif
|
|
|
|
#define SYS_futex 202
|
|
#define FUTEX_WAKE 1
|
|
|
|
|
|
.text
|
|
|
|
.globl sem_post
|
|
.type sem_post,@function
|
|
.align 16
|
|
sem_post:
|
|
movl $1, %edx
|
|
LOCK
|
|
xaddl %edx, (%rdi)
|
|
|
|
movl $SYS_futex, %eax
|
|
movl $FUTEX_WAKE, %esi
|
|
incl %edx
|
|
syscall
|
|
|
|
testq %rax, %rax
|
|
js 1f
|
|
|
|
xorl %eax, %eax
|
|
retq
|
|
|
|
1:
|
|
#if USE___THREAD
|
|
movq errno@gottpoff(%rip), %rdx
|
|
movl $EINVAL, %fs:(%rdx)
|
|
#else
|
|
callq __errno_location@plt
|
|
movl $EINVAL, (%rax)
|
|
#endif
|
|
|
|
orl $-1, %eax
|
|
retq
|
|
.size sem_post,.-sem_post
|