Update.

	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
	(__lll_mutex_lock_wait): Reverse order of first two parameters.
	(__lll_mutex_timedlock_wait): Likewise.
	(lll_mutex_lock): Adjust asm for that.
	(lll_mutex_timedlock): Likewise.  Mark cx, cc, r10 as clobbered.
	(lll_lock): Adjust asm for operand order change.
	* sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: New file.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevelmutex.S: New file.

1 files changed, 164 insertions, 0 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S
new file mode 100644
index 0000000000..a494e0efaa
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S
@@ -0,0 +1,164 @@
+/* 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>
+
+	.text
+
+#ifndef LOCK
+# ifdef UP
+#  define LOCK
+# else
+#  define LOCK lock
+# endif
+#endif
+
+#define SYS_gettimeofday	__NR_gettimeofday
+#define SYS_futex		202
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+
+#define EWOULDBLOCK		11
+#define EINVAL			22
+#define ETIMEDOUT		110
+
+
+	.globl	__lll_mutex_lock_wait
+	.type	__lll_mutex_lock_wait,@function
+	.hidden	__lll_mutex_lock_wait
+	.align	16
+__lll_mutex_lock_wait:
+	pushq	%r10
+	pushq	%rdx
+
+	xorq	%r10, %r10	/* No timeout.  */
+
+1:
+	leal	1(%esi), %edx	/* account for the preceeded xadd.  */
+	movq	%r10, %rsi	/* movl $FUTEX_WAIT, %ecx */
+	movq	$SYS_futex, %rax
+	syscall
+
+	movl	$1, %esi
+	LOCK
+	xaddl	%esi, (%rdi)
+	testl	%esi, %esi
+	jne	1b
+
+	movl	$2, (%rdi)
+
+	popq	%rdx
+	popq	%r10
+	retq
+	.size	__lll_mutex_lock_wait,.-__lll_mutex_lock_wait
+
+
+#ifdef NOT_IN_libc
+	.globl	__lll_mutex_timedlock_wait
+	.type	__lll_mutex_timedlock_wait,@function
+	.hidden	__lll_mutex_timedlock_wait
+	.align	16
+__lll_mutex_timedlock_wait:
+	/* Check for a valid timeout value.  */
+	cmpq	$1000000000, 4(%rdx)
+	jae	3f
+
+	/* Stack frame for the timespec and timeval structs.  */
+	subq	$16, %rsp
+
+	movq	%rdi, %r8
+	movq	%rdx, %r9
+	leal	1(%eax), %edx
+
+	/* Get current time.  */
+1:
+	movq	%rsp, %rdi
+	xorq	%rsi, %rsi
+	movq	$SYS_gettimeofday, %rax
+	syscall
+
+	/* Compute relative timeout.  */
+	movq	8(%esp), %rax
+	movq	$1000, %rdi
+	mul	%rdi		/* Milli seconds to nano seconds.  */
+	movq	(%r9), %rdi
+	movq	8(%r9), %rsi
+	subq	(%rsp), %rdi
+	subq	%rax, %rsi
+	jns	4f
+	addq	$1000000000, %rsi
+	decq	%rdi
+4:	testq	%rdi, %rdi
+	js	5f		/* Time is already up.  */
+
+	/* Futex call.  */
+	movq	%rdi, (%rsp)	/* Store relative timeout.  */
+	movq	%rsi, 4(%rsp)
+
+	movq	%rsp, %r10
+	xorq	%rsi, %rsi	/* movq $FUTEX_WAIT, %rsi */
+	movq	%r8, %rdi
+	movq	$SYS_futex, %rax
+	syscall
+
+	movl	$1, %edx
+	LOCK
+	xaddl	%edx, (%rdi)
+	testl	%edx, %edx
+	jne	7f
+
+	movl	$2, (%rdi)
+	xorl	%eax, %eax
+
+	addq	$16, %rsp
+	retq
+
+	/* Check whether the time expired.  */
+7:	cmpq	$-ETIMEDOUT, %rax
+	je	5f
+	jmp	1b
+
+3:	movl	$EINVAL, %eax
+	retq
+
+5:	movl	$ETIMEDOUT, %eax
+	addq	$16, %rsp
+	retq
+	.size	__lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait
+#endif
+
+
+	.globl	__lll_mutex_unlock_wake
+	.type	__lll_mutex_unlock_wake,@function
+	.hidden	__lll_mutex_unlock_wake
+	.align	16
+__lll_mutex_unlock_wake:
+	pushq	%rsi
+	pushq	%rdx
+
+	movl	$0, (%rdi)
+	movq	$FUTEX_WAKE, %rsi
+	movl	$1, %edx	/* Wake one thread.  */
+	movq	$SYS_futex, %rax
+	syscall
+
+	popq	%rdx
+	popq	%rsi
+	retq
+	.size	__lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake