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authorUlrich Drepper <drepper@redhat.com>2003-01-28 23:52:31 +0000
committerUlrich Drepper <drepper@redhat.com>2003-01-28 23:52:31 +0000
commit1d087a7e39b36b088ec199451984f6f6a8799b3a (patch)
treed98400b28adb89b8997f2c4381fc98df40cb7118 /nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
parentdb34912eb03df7020a3e607de85bcff431b29348 (diff)
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Update.
	* Makefile (libpthread-routines): Remove lowlevelcond and
	lowlevelsem.  Add sem_wait, sem_trywait, sem_timedwait, sem_post,
	pthread_cond_wait, pthread_cond_timedwait, pthread_cond_signal,
	and pthread_cond_broadcast.
	* sysdeps/unix/sysv/linux/i486/lowlevelsem.S: Removed
	* sysdeps/unix/sysv/linux/i486/lowlevelcond.S: Removed
	* sysdeps/unix/sysv/linux/i586/lowlevelsem.S: Removed
	* sysdeps/unix/sysv/linux/i586/lowlevelcond.S: Removed
	* sysdeps/unix/sysv/linux/i686/lowlevelsem.S: Removed
	* sysdeps/unix/sysv/linux/i686/lowlevelcond.S: Removed
	* sysdeps/unix/sysv/linux/i486/sem_wait.S: New file.
	* sysdeps/unix/sysv/linux/i486/sem_trywait.S: New file.
	* sysdeps/unix/sysv/linux/i486/sem_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i486/sem_post.S: New file.
	* sysdeps/unix/sysv/linux/i486/pthread_cond_wait.S: New file.
	* sysdeps/unix/sysv/linux/i486/pthread_cond_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i486/pthread_cond_signal.S: New file.
	* sysdeps/unix/sysv/linux/i486/pthread_cond_broadcast.S: New file.
	* sysdeps/unix/sysv/linux/i586/sem_wait.S: New file.
	* sysdeps/unix/sysv/linux/i586/sem_trywait.S: New file.
	* sysdeps/unix/sysv/linux/i586/sem_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i586/sem_post.S: New file.
	* sysdeps/unix/sysv/linux/i586/pthread_cond_wait.S: New file.
	* sysdeps/unix/sysv/linux/i586/pthread_cond_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i586/pthread_cond_signal.S: New file.
	* sysdeps/unix/sysv/linux/i586/pthread_cond_broadcast.S: New file.
	* sysdeps/unix/sysv/linux/i686/sem_wait.S: New file.
	* sysdeps/unix/sysv/linux/i686/sem_trywait.S: New file.
	* sysdeps/unix/sysv/linux/i686/sem_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i686/sem_post.S: New file.
	* sysdeps/unix/sysv/linux/i686/pthread_cond_wait.S: New file.
	* sysdeps/unix/sysv/linux/i686/pthread_cond_timedwait.S: New file.
	* sysdeps/unix/sysv/linux/i686/pthread_cond_signal.S: New file.
	* sysdeps/unix/sysv/linux/i686/pthread_cond_broadcast.S: New file.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S274
1 files changed, 274 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
new file mode 100644
index 0000000000..438fcca6a4
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
@@ -0,0 +1,274 @@
+/* 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>
+#include <lowlevelcond.h>
+
+#ifdef UP
+# define LOCK
+#else
+# define LOCK lock
+#endif
+
+#define SYS_futex		240
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+
+
+	.text
+
+	.align	16
+	.type	__condvar_cleanup, @function
+	.globl	__condvar_cleanup
+	.hidden	__condvar_cleanup
+__condvar_cleanup:
+	pushl	%ebx
+	movl	8(%esp), %ebx
+#if cond_lock != 0
+	addl	$cond_lock, %ebx
+#endif
+
+	/* Get internal lock.  */
+	movl	$1, %eax
+	LOCK
+#if cond_lock == 0
+	xaddl	%eax, (%ebx)
+#else
+	xaddl	%eax, cond_lock(%ebx)
+#endif
+	testl	%eax, %eax
+	je	1f
+
+#if cond_lock == 0
+	movl	%ebx, %ecx
+#else
+	leal	cond_lock(%ebx), %ecx
+#endif
+	call	__lll_mutex_lock_wait
+
+1:	addl	$1, wakeup_seq(%ebx)
+	adcl	$0, wakeup_seq+4(%ebx)
+
+	addl	$1, woken_seq(%ebx)
+	adcl	$0, woken_seq+4(%ebx)
+
+	LOCK
+	decl	(%ebx)
+	je	2f
+#if cond_lock == 0
+	movl	%ebx, %eax
+#else
+	leal	cond_lock(%ebx), %eax
+#endif
+	call	__lll_mutex_unlock_wake
+
+2:	popl	%ebx
+	ret
+	.size	__condvar_cleanup, .-__condvar_cleanup
+
+
+/* int pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)  */
+	.globl	__pthread_cond_wait
+	.type	__pthread_cond_wait, @function
+	.align	16
+__pthread_cond_wait:
+
+	pushl	%edi
+	pushl	%esi
+	pushl	%ebx
+
+	xorl	%esi, %esi
+	movl	16(%esp), %ebx
+#if cond_lock != 0
+	addl	$cond_lock, %ebx
+#endif
+
+	/* Get internal lock.  */
+	movl	$1, %eax
+	LOCK
+#if cond_lock == 0
+	xaddl	%eax, (%ebx)
+#else
+	xaddl	%eax, cond_lock(%ebx)
+#endif
+	testl	%eax, %eax
+	jne	1f
+
+	/* Unlock the mutex.  */
+2:	pushl	20(%esp)
+	call	__pthread_mutex_unlock_internal
+
+	addl	$1, total_seq(%ebx)
+	adcl	$0, total_seq+4(%ebx)
+
+	/* Install cancellation handler.  */
+#ifdef PIC
+	call	__i686.get_pc_thunk.cx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ecx
+	leal	__condvar_cleanup@GOTOFF(%ecx), %eax
+#else
+	leal	__condvar_cleanup, %eax
+#endif
+	subl	$24, %esp
+	leal	12(%esp), %edx
+	movl	%ebx, 8(%esp)
+	movl	%eax, 4(%esp)
+	movl	%edx, (%esp)
+	call	__pthread_cleanup_push
+
+	/* Get and store current wakeup_seq value.  */
+	movl	wakeup_seq(%ebx), %edi
+	movl	wakeup_seq+4(%ebx), %edx
+	movl	%edi, 4(%esp)
+	movl	%edx, 8(%esp)
+
+	/* Unlock.  */
+8:	LOCK
+#if cond_lock == 0
+	decl	(%ebx)
+#else
+	decl	cond_lock(%ebx)
+#endif
+	jne	3f
+
+4:	call	__pthread_enable_asynccancel
+	movl	%eax, (%esp)
+
+	movl	%esi, %ecx	/* movl $FUTEX_WAIT, %ecx */
+	movl	%edi, %edx
+	addl	$wakeup_seq-cond_lock, %ebx
+	movl	$SYS_futex, %eax
+	ENTER_KERNEL
+	subl	$wakeup_seq-cond_lock, %ebx
+
+	call	__pthread_disable_asynccancel
+
+	/* Lock.  */
+	movl	$1, %eax
+	LOCK
+#if cond_lock == 0
+	xaddl	%eax, (%ebx)
+#else
+	xaddl	%eax, cond_lock(%ebx)
+#endif
+	testl	%eax, %eax
+	jne	5f
+
+6:	movl	woken_seq(%ebx), %eax
+	movl	woken_seq+4(%ebx), %ecx
+
+	movl	wakeup_seq(%ebx), %edi
+	movl	wakeup_seq+4(%ebx), %edx
+
+	cmpl	8(%esp), %ecx
+	ja	7f
+	jb	8b
+	cmpl	4(%esp), %eax
+	jb	8b
+
+7:	cmpl	%ecx, %edx
+	ja	9f
+	jb	8b
+	cmp	%eax, %edi
+	jna	8b
+
+9:	addl	$1, woken_seq(%ebx)
+	adcl	$0, woken_seq+4(%ebx)
+
+	LOCK
+#if cond_lock == 0
+	decl	(%ebx)
+#else
+	decl	cond_lock(%ebx)
+#endif
+	jne	10f
+
+	/* Remove cancellation handler.  */
+11:	leal	12(%esp), %edx
+	movl	$0, 4(%esp)
+	movl	%edx, (%esp)
+	call	__pthread_cleanup_pop
+
+	movl	48(%esp), %eax
+	movl	%eax, (%esp)
+	call	__pthread_mutex_lock_internal
+	addl	$28, %esp
+
+	popl	%ebx
+	popl	%esi
+	popl	%edi
+
+	/* We return the result of the mutex_lock operation.  */
+	ret
+
+	/* Initial locking failed.  */
+1:
+#if cond_lock == 0
+	movl	%ebx, %ecx
+#else
+	leal	cond_lock(%ebx), %ecx
+#endif
+	call	__lll_mutex_lock_wait
+	jmp	2b
+
+	/* Unlock in loop requires waekup.  */
+3:
+#if cond_lock == 0
+	movl	%ebx, %eax
+#else
+	leal	cond_lock(%ebx), %eax
+#endif
+	call	__lll_mutex_unlock_wake
+	jmp	4b
+
+	/* Locking in loop failed.  */
+5:
+#if cond_lock == 0
+	movl	%ebx, %ecx
+#else
+	leal	cond_lock(%ebx), %ecx
+#endif
+	call	__lll_mutex_lock_wait
+	jmp	6b
+
+	/* Unlock after loop requires waekup.  */
+10:
+#if cond_lock == 0
+	movl	%ebx, %eax
+#else
+	leal	cond_lock(%ebx), %eax
+#endif
+	call	__lll_mutex_unlock_wake
+	jmp	11b
+	.size	__pthread_cond_wait, .-__pthread_cond_wait
+versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
+		  GLIBC_2_3_2)
+
+
+#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