0154658d3d
whether there are more than one thread makes no sense here since we only call the slow path if the locks are taken. * sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.
36 lines
1.3 KiB
ArmAsm
36 lines
1.3 KiB
ArmAsm
/* Copyright (C) 2002, 2003, 2007 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 <kernel-features.h>
|
|
|
|
/* All locks in libc are private. Use the kernel feature if possible. */
|
|
#define FUTEX_PRIVATE_FLAG 128
|
|
#ifdef __ASSUME_PRIVATE_FUTEX
|
|
# define FUTEX_WAIT (0 | FUTEX_PRIVATE_FLAG)
|
|
# define FUTEX_WAKE (1 | FUTEX_PRIVATE_FLAG)
|
|
#else
|
|
# define LOAD_FUTEX_WAIT(reg) \
|
|
movl %fs:PRIVATE_FUTEX, reg
|
|
# define LOAD_FUTEX_WAKE(reg) \
|
|
movl %fs:PRIVATE_FUTEX, reg ; \
|
|
orl $FUTEX_WAKE, reg
|
|
#endif
|
|
|
|
#include "lowlevellock.S"
|