2003-01-28 23:52:31 +00:00
|
|
|
/* Copyright (C) 2002, 2003 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>
|
2003-03-12 10:28:07 +00:00
|
|
|
#include <pthread-errnos.h>
|
2003-01-28 23:52:31 +00:00
|
|
|
|
|
|
|
|
#ifndef UP
|
|
|
|
|
# define LOCK lock
|
|
|
|
|
#else
|
|
|
|
|
# define
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#define SYS_futex 240
|
|
|
|
|
#define FUTEX_WAKE 1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
|
|
|
|
|
.globl __new_sem_trywait
|
|
|
|
|
.type __new_sem_trywait,@function
|
|
|
|
|
.align 16
|
|
|
|
|
__new_sem_trywait:
|
|
|
|
|
movl 4(%esp), %ecx
|
|
|
|
|
|
|
|
|
|
movl (%ecx), %eax
|
|
|
|
|
2: testl %eax, %eax
|
|
|
|
|
jz 1f
|
|
|
|
|
|
|
|
|
|
leal -1(%eax), %edx
|
|
|
|
|
LOCK
|
|
|
|
|
cmpxchgl %edx, (%ecx)
|
|
|
|
|
jne,pn 2b
|
|
|
|
|
xorl %eax, %eax
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
1:
|
|
|
|
|
#ifdef PIC
|
|
|
|
|
call __i686.get_pc_thunk.cx
|
|
|
|
|
#else
|
|
|
|
|
movl $3f, %ecx
|
|
|
|
|
3:
|
|
|
|
|
#endif
|
|
|
|
|
addl $_GLOBAL_OFFSET_TABLE_, %ecx
|
|
|
|
|
#if USE___THREAD
|
|
|
|
|
movl %gs:0, %edx
|
|
|
|
|
subl errno@gottpoff(%ecx), %edx
|
|
|
|
|
movl $EAGAIN, (%edx)
|
|
|
|
|
#else
|
|
|
|
|
call __errno_location@plt
|
|
|
|
|
movl $EAGAIN, (%eax)
|
|
|
|
|
#endif
|
|
|
|
|
orl $-1, %eax
|
|
|
|
|
ret
|
|
|
|
|
.size __new_sem_trywait,.-__new_sem_trywait
|
2003-03-13 01:06:30 +00:00
|
|
|
versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1)
|
2003-01-28 23:52:31 +00:00
|
|
|
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
|
|
|
|
.global __old_sem_trywait
|
|
|
|
|
__old_sem_trywait = __new_sem_trywait
|
2003-03-13 01:06:30 +00:00
|
|
|
compat_symbol(libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0)
|
2003-01-28 23:52:31 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef PIC
|
|
|
|
|
.section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits
|
|
|
|
|
.globl __i686.get_pc_thunk.cx
|
|
|
|
|
.hidden __i686.get_pc_thunk.cx
|
|
|
|
|
.type __i686.get_pc_thunk.cx,@function
|
|
|
|
|
__i686.get_pc_thunk.cx:
|
|
|
|
|
movl (%esp), %ecx;
|
|
|
|
|
ret
|
|
|
|
|
.size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx
|
|
|
|
|
#endif
|
