From 8833066b122427710a9e14a888ce6cfa862332d3 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 31 Jul 2007 17:46:17 +0000
Subject: Updated to fedora-glibc-20070731T1624

---
 nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

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

diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S
index 7f608a5974..4919c11fd2 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -20,6 +20,7 @@
 #include <sysdep.h>
 #include <shlib-compat.h>
 #include <pthread-errnos.h>
+#include <structsem.h>
 
 #ifndef UP
 # define LOCK lock
@@ -37,19 +38,26 @@
 	.type	sem_post,@function
 	.align	16
 sem_post:
-	movl	$1, %edx
 	LOCK
-	xaddl	%edx, (%rdi)
+#if VALUE == 0
+	addl	$1, (%rdi)
+#else
+	addl	$1, VALUE(%rdi)
+#endif
+
+	cmpq	$0, NWAITERS(%rdi)
+	je	2f
 
 	movl	$SYS_futex, %eax
 	movl	$FUTEX_WAKE, %esi
-	incl	%edx
+	orl	PRIVATE(%rdi), %esi
+	movl	$1, %edx
 	syscall
 
 	testq	%rax, %rax
 	js	1f
 
-	xorl	%eax, %eax
+2:	xorl	%eax, %eax
 	retq
 
 1:
-- 
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