From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 22 Dec 2004 20:10:10 +0000
Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

---
 nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S | 97 ++++------------------
 1 file changed, 18 insertions(+), 79 deletions(-)

(limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S')

diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
index 394dec8d82..d5c9345558 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -43,25 +43,17 @@
 	.hidden	__lll_mutex_lock_wait
 	.align	16
 __lll_mutex_lock_wait:
-	cfi_startproc
 	pushq	%r10
-	cfi_adjust_cfa_offset(8)
 	pushq	%rdx
-	cfi_adjust_cfa_offset(8)
-	cfi_offset(%r10, -16)
-	cfi_offset(%rdx, -24)
+
 	xorq	%r10, %r10	/* No timeout.  */
 	movl	$2, %edx
-#if FUTEX_WAIT == 0
-	xorl	%esi, %esi
-#else
-	movl	$FUTEX_WAIT, %esi
-#endif
+	movq	%r10, %rsi	/* movq $FUTEX_WAIT, %rsi */
 
 	cmpl	%edx, %eax	/* NB:	 %edx == 2 */
 	jne	2f
 
-1:	movl	$SYS_futex, %eax
+1:	movq	$SYS_futex, %rax
 	syscall
 
 2:	movl	%edx, %eax
@@ -71,13 +63,8 @@ __lll_mutex_lock_wait:
 	jnz	1b
 
 	popq	%rdx
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%rdx)
 	popq	%r10
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r10)
 	retq
-	cfi_endproc
 	.size	__lll_mutex_lock_wait,.-__lll_mutex_lock_wait
 
 
@@ -87,30 +74,18 @@ __lll_mutex_lock_wait:
 	.hidden	__lll_mutex_timedlock_wait
 	.align	16
 __lll_mutex_timedlock_wait:
-	cfi_startproc
 	/* Check for a valid timeout value.  */
 	cmpq	$1000000000, 8(%rdx)
 	jae	3f
 
 	pushq	%r8
-	cfi_adjust_cfa_offset(8)
 	pushq	%r9
-	cfi_adjust_cfa_offset(8)
 	pushq	%r12
-	cfi_adjust_cfa_offset(8)
 	pushq	%r13
-	cfi_adjust_cfa_offset(8)
 	pushq	%r14
-	cfi_adjust_cfa_offset(8)
-	cfi_offset(%r8, -16)
-	cfi_offset(%r9, -24)
-	cfi_offset(%r12, -32)
-	cfi_offset(%r13, -40)
-	cfi_offset(%r14, -48)
 
 	/* Stack frame for the timespec and timeval structs.  */
 	subq	$16, %rsp
-	cfi_adjust_cfa_offset(16)
 
 	movq	%rdi, %r12
 	movq	%rdx, %r13
@@ -118,7 +93,7 @@ __lll_mutex_timedlock_wait:
 1:
 	/* Get current time.  */
 	movq	%rsp, %rdi
-	xorl	%esi, %esi
+	xorq	%rsi, %rsi
 	movq	$VSYSCALL_ADDR_vgettimeofday, %rax
 	/* This is a regular function call, all caller-save registers
 	   might be clobbered.  */
@@ -126,7 +101,7 @@ __lll_mutex_timedlock_wait:
 
 	/* Compute relative timeout.  */
 	movq	8(%rsp), %rax
-	movl	$1000, %edi
+	movq	$1000, %rdi
 	mul	%rdi		/* Milli seconds to nano seconds.  */
 	movq	(%r13), %rdi
 	movq	8(%r13), %rsi
@@ -151,50 +126,26 @@ __lll_mutex_timedlock_wait:
 	je	8f
 
 	movq	%rsp, %r10
-#if FUTEX_WAIT == 0
-	xorl	%esi, %esi
-#else
-	movl	$FUTEX_WAIT, %esi
-#endif
+	xorq	%rsi, %rsi	/* movq $FUTEX_WAIT, %rsi */
 	movq	%r12, %rdi
-	movl	$SYS_futex, %eax
+	movq	$SYS_futex, %rax
 	syscall
 	movq	%rax, %rcx
 
 8:				/* NB: %edx == 2 */
 	xorl	%eax, %eax
 	LOCK
-	cmpxchgl %edx, (%r12)
+	cmpxchgl %edx, (%rdi)
 	jnz	7f
 
 6:	addq	$16, %rsp
-	cfi_adjust_cfa_offset(-16)
 	popq	%r14
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r14)
 	popq	%r13
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r13)
 	popq	%r12
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r12)
 	popq	%r9
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r9)
 	popq	%r8
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r8)
 	retq
 
-3:	movl	$EINVAL, %eax
-	retq
-
-	cfi_adjust_cfa_offset(56)
-	cfi_offset(%r8, -16)
-	cfi_offset(%r9, -24)
-	cfi_offset(%r12, -32)
-	cfi_offset(%r13, -40)
-	cfi_offset(%r14, -48)
 	/* Check whether the time expired.  */
 7:	cmpq	$-ETIMEDOUT, %rcx
 	je	5f
@@ -206,9 +157,11 @@ __lll_mutex_timedlock_wait:
 	jz	6b
 	jmp	1b
 
+3:	movl	$EINVAL, %eax
+	retq
+
 5:	movl	$ETIMEDOUT, %eax
 	jmp	6b
-	cfi_endproc
 	.size	__lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait
 #endif
 
@@ -238,28 +191,18 @@ lll_unlock_wake_cb:
 	.hidden	__lll_mutex_unlock_wake
 	.align	16
 __lll_mutex_unlock_wake:
-	cfi_startproc
 	pushq	%rsi
-	cfi_adjust_cfa_offset(8)
 	pushq	%rdx
-	cfi_adjust_cfa_offset(8)
-	cfi_offset(%rsi, -16)
-	cfi_offset(%rdx, -24)
 
 	movl	$0, (%rdi)
-	movl	$FUTEX_WAKE, %esi
+	movq	$FUTEX_WAKE, %rsi
 	movl	$1, %edx	/* Wake one thread.  */
-	movl	$SYS_futex, %eax
+	movq	$SYS_futex, %rax
 	syscall
 
 	popq	%rdx
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%rdx)
 	popq	%rsi
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%rsi)
 	retq
-	cfi_endproc
 	.size	__lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake
 
 
@@ -279,13 +222,13 @@ __lll_timedwait_tid:
 
 	/* Get current time.  */
 2:	movq	%rsp, %rdi
-	xorl	%esi, %esi
+	xorq	%rsi, %rsi
 	movq	$VSYSCALL_ADDR_vgettimeofday, %rax
 	callq	*%rax
 
 	/* Compute relative timeout.  */
 	movq	8(%rsp), %rax
-	movl	$1000, %edi
+	movq	$1000, %rdi
 	mul	%rdi		/* Milli seconds to nano seconds.  */
 	movq	(%r13), %rdi
 	movq	8(%r13), %rsi
@@ -305,13 +248,9 @@ __lll_timedwait_tid:
 	jz	4f
 
 	movq	%rsp, %r10
-#if FUTEX_WAIT == 0
-	xorl	%esi, %esi
-#else
-	movl	$FUTEX_WAIT, %esi
-#endif
+	xorq	%rsi, %rsi	/* movq $FUTEX_WAIT, %rsi */
 	movq	%r12, %rdi
-	movl	$SYS_futex, %eax
+	movq	$SYS_futex, %rax
 	syscall
 
 	cmpl	$0, (%rdi)
-- 
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