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/* Copyright (C) 2002 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>
.text
#ifndef UP
# define LOCK lock
#else
# define
#endif
#define SYS_gettimeofday __NR_gettimeofday
#define SYS_futex 240
#define FUTEX_WAKE 1
#define EINTR 4
#define EAGAIN 11
#define EWOULDBLOCK EAGAIN
#define EINVAL 22
#define ETIMEDOUT 110
.globl __new_sem_wait
.type __new_sem_wait,@function
.align 16
__new_sem_wait:
pushl %ebx
pushl %esi
movl 12(%esp), %ebx
3: movl (%ebx), %eax
2: testl %eax, %eax
je,pn 1f
leal -1(%eax), %edx
LOCK
cmpxchgl %edx, (%ebx)
jne,pn 2b
xorl %eax, %eax
popl %esi
popl %ebx
ret
1: xorl %esi, %esi
movl $SYS_futex, %eax
movl %esi, %ecx
movl %esi, %edx
int $0x80
testl %eax, %eax
je 3b
cmpl $-EWOULDBLOCK, %eax
je 3b
negl %eax
#ifdef PIC
call __i686.get_pc_thunk.bx
#else
movl $4f, %ebx
4:
#endif
addl $_GLOBAL_OFFSET_TABLE_, %ebx
movl %gs:0, %edx
subl errno@gottpoff(%ebx), %edx
movl %eax, (%edx)
orl $-1, %eax
popl %esi
popl %ebx
ret
.size __new_sem_wait,.-__new_sem_wait
.symver __new_sem_wait, sem_wait@@GLIBC_2.1
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
.global __old_sem_wait
__old_sem_wait = __new_sem_wait
.symver __old_sem_wait, sem_wait@GLIBC_2.0
#endif
.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
movl %gs:0, %edx
subl errno@gottpoff(%ecx), %edx
movl $EAGAIN, (%edx)
orl $-1, %eax
ret
.size __new_sem_trywait,.-__new_sem_trywait
.symver __new_sem_trywait, sem_trywait@@GLIBC_2.1
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
.global __old_sem_trywait
__old_sem_trywait = __new_sem_trywait
.symver __old_sem_trywait, sem_trywait@GLIBC_2.0
#endif
.globl sem_timedwait
.type sem_timedwait,@function
.align 16
sem_timedwait:
movl 4(%esp), %ecx
movl (%ecx), %eax
2: testl %eax, %eax
je,pn 1f
leal -1(%eax), %edx
LOCK
cmpxchgl %edx, (%ecx)
jne,pn 2b
xorl %eax, %eax
ret
/* Check whether the timeout value is valid. */
1: pushl %esi
pushl %edi
pushl %ebx
subl $8, %esp
movl %esp, %esi
movl 28(%esp), %edi
/* Check for invalid nanosecond field. */
cmpl $1000000000, 4(%edi)
movl $EINVAL, %eax
jae 6f
7: xorl %ecx, %ecx
movl %esp, %ebx
movl %ecx, %edx
movl $SYS_gettimeofday, %eax
int $0x80
/* Compute relative timeout. */
movl 4(%esp), %eax
movl $1000, %edx
mul %edx /* Milli seconds to nano seconds. */
movl (%edi), %ecx
movl 4(%edi), %edx
subl (%esp), %ecx
subl %eax, %edx
jns 5f
addl $1000000000, %edx
decl %ecx
5: testl %ecx, %ecx
movl $ETIMEDOUT, %eax
js 6f /* Time is already up. */
movl %ecx, (%esp) /* Store relative timeout. */
movl %edx, 4(%esp)
movl 24(%esp), %ebx
xorl %ecx, %ecx
movl $SYS_futex, %eax
xorl %edx, %edx
int $0x80
testl %eax, %eax
je,pt 9f
cmpl $-EWOULDBLOCK, %eax
jne 3f
9: movl (%ebx), %eax
8: testl %eax, %eax
je 7b
leal -1(%eax), %ecx
LOCK
cmpxchgl %ecx, (%ebx)
jne,pn 8b
addl $8, %esp
xorl %eax, %eax
popl %ebx
popl %edi
popl %esi
ret
3: negl %eax
6:
#ifdef PIC
call __i686.get_pc_thunk.bx
#else
movl $4f, %ebx
4:
#endif
addl $_GLOBAL_OFFSET_TABLE_, %ebx
movl %gs:0, %edx
subl errno@gottpoff(%ebx), %edx
movl %eax, (%edx)
addl $8, %esp
orl $-1, %eax
popl %ebx
popl %edi
popl %esi
ret
.size sem_timedwait,.-sem_timedwait
.globl __new_sem_post
.type __new_sem_post,@function
.align 16
__new_sem_post:
pushl %esi
pushl %ebx
movl 12(%esp), %ebx
movl $1, %edx
LOCK
xaddl %edx, (%ebx)
xorl %esi, %esi
movl $SYS_futex, %eax
movl $FUTEX_WAKE, %ecx
incl %edx
int $0x80
testl %eax, %eax
js 1f
popl %ebx
popl %esi
ret
1:
#ifdef PIC
call __i686.get_pc_thunk.bx
#else
movl $4f, %ebx
4:
#endif
addl $_GLOBAL_OFFSET_TABLE_, %ebx
movl %gs:0, %edx
subl errno@gottpoff(%ebx), %edx
movl $EINVAL, (%edx)
orl $-1, %eax
popl %ebx
popl %esi
ret
.size __new_sem_post,.-__new_sem_post
.symver __new_sem_post, sem_post@@GLIBC_2.1
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
.global __old_sem_post
__old_sem_post = __new_sem_post
.symver __old_sem_post, sem_post@GLIBC_2.0
#endif
#ifdef PIC
.section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
.globl __i686.get_pc_thunk.bx
.hidden __i686.get_pc_thunk.bx
.type __i686.get_pc_thunk.bx,@function
__i686.get_pc_thunk.bx:
movl (%esp), %ebx;
ret
.size __i686.get_pc_thunk.bx,.-__i686.get_pc_thunk.bx
.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
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