mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 02:40:06 +00:00
ccf1d5737a
* tst-tls2.c (do_test): Add TEMP_FAILURE_RETRY around sem_wait call. * tst-signal3.c (do_test): Likewise. * tst-sem5.c (do_test): Likewise. * tst-kill6.c (do_test): Likewise. * tst-tls3.c (do_test): Likewise. Include <errno.h>. * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Use add/sub instead of inc/dec. * sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Likewise. * sysdeps/unix/sysv/linux/i386/pthread_once.S: Likewise * sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
/* 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. */
|
|
|
|
#ifndef _LOWLEVELSEM_H
|
|
#define _LOWLEVELSEM_H 1
|
|
|
|
#include <dl-sysdep.h>
|
|
#include <tls.h>
|
|
|
|
#ifndef LOCK
|
|
# ifdef UP
|
|
# define LOCK /* nothing */
|
|
# else
|
|
# define LOCK "lock;"
|
|
# endif
|
|
#endif
|
|
|
|
#define SYS_futex 240
|
|
|
|
|
|
#ifdef I386_USE_SYSENTER
|
|
# ifdef SHARED
|
|
# define LLL_SEM_ENTER_KERNEL(arg) "call *%%gs:%P" #arg "\n\t"
|
|
# else
|
|
# define LLL_SEM_ENTER_KERNEL(arg) "call *_dl_sysinfo\n\t"
|
|
# endif
|
|
#else
|
|
# define LLL_SEM_ENTER_KERNEL(arg) "int $0x80\n\t"
|
|
#endif
|
|
|
|
#define lll_sem_wait(sem) \
|
|
({ int result, ignore1, ignore2; \
|
|
__asm __volatile ("1:\taddl $1,8(%4)\n\t" \
|
|
LOCK "addl $1,(%4)\n\t" \
|
|
"jng 2f\n" \
|
|
".subsection 1\n" \
|
|
"2:\tmovl %4, %%eax\n\t" \
|
|
"call __lll_unlock_wake\n\t" \
|
|
"jmp 3f\n\t" \
|
|
".previous\n" \
|
|
"3:\tpushl %%ebx\n\t" \
|
|
"movl %%esi, %%ecx\n\t" \
|
|
"movl %%esi, %%edx\n\t" \
|
|
"leal 4(%4), %%ebx\n\t" \
|
|
"movl %5, %%eax\n\t" \
|
|
LLL_SEM_ENTER_KERNEL (9) \
|
|
"movl %%eax, %%edx\n\t" \
|
|
"popl %%ebx\n\t" \
|
|
"orl $-1, %%eax\n\t" \
|
|
LOCK "xaddl %%eax, (%4)\n\t" \
|
|
"jne 4f\n\t" \
|
|
".subsection 1\n" \
|
|
"4:\tmovl %4, %%ecx\n\t" \
|
|
"call __lll_lock_wait\n\t" \
|
|
"jmp 5f\n\t" \
|
|
".previous\n" \
|
|
"5:\tsubl $1,8(%4)\n\t" \
|
|
"xorl %0, %0\n\t" \
|
|
"cmpl $0, 4(%4)\n\t" \
|
|
"jne,pt 6f\n\t" \
|
|
"cmpl %7, %%edx\n\t" \
|
|
"jne,pn 1b\n\t" \
|
|
"addl %8, %0\n\t" /* Shorter than movl %7, %0 */ \
|
|
"6:" \
|
|
: "=a" (result), "=c" (ignore1), "=d" (ignore2), \
|
|
"=m" (*sem) \
|
|
: "D" (sem), "i" (SYS_futex), "S" (0), \
|
|
"i" (-EINTR), "i" (EINTR), \
|
|
"i" (offsetof (tcbhead_t, sysinfo))); \
|
|
result; })
|
|
|
|
|
|
extern int __lll_sem_timedwait (struct sem *sem, const struct timespec *ts)
|
|
__attribute__ ((regparm (2))) attribute_hidden;
|
|
#define lll_sem_timedwait(sem, timeout) \
|
|
__lll_sem_timedwait (sem, timeout)
|
|
|
|
|
|
#define lll_sem_post(sem) \
|
|
(void) ({ int ignore1, ignore2, ignore3; \
|
|
__asm __volatile ("movl $1, %%eax\n\t" \
|
|
LOCK \
|
|
"xaddl %%eax, (%4)\n\t" \
|
|
"pushl %%esi\n\t" \
|
|
"pushl %%ebx\n\t" \
|
|
"movl %4, %%ebx\n\t" \
|
|
"leal 1(%%eax), %%edx\n\t" \
|
|
"xorl %%esi, %%esi\n\t" \
|
|
"movl %5, %%eax\n\t" \
|
|
/* movl $FUTEX_WAKE, %ecx */ \
|
|
"movl $1, %%ecx\n\t" \
|
|
LLL_SEM_ENTER_KERNEL (6) \
|
|
"popl %%ebx\n\t" \
|
|
"popl %%esi" \
|
|
: "=&a" (ignore1), "=c" (ignore2), \
|
|
"=m" (*sem), "=d" (ignore3) \
|
|
: "r" (sem), "i" (SYS_futex), \
|
|
"i" (offsetof (tcbhead_t, sysinfo))); })
|
|
|
|
#endif /* lowlevelsem.h */
|