From: H.J. Lu <hongjiu.lu@intel.com>
Date: Tue, 23 Feb 2010 12:14:37 +0000 (+0100)
Subject: Fix SSSE3 memcpy
X-Git-Tag: fedora/glibc-2.11.90-14~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5abc599d9ea29b8f43dfe67a6409f9cde6a869b4;p=thirdparty%2Fglibc.git

Fix SSSE3 memcpy
---

diff --git a/ChangeLog b/ChangeLog
index d5b67e804f6..a4bb213f5e8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-02-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S: Properly
+	decrement ECX when jumping to copy_page_by_rep.
+
 2010-02-19  Carl Fredrik Hammar  <hammy.lite@gmail.com>
 
 	* hurd/hurdioctl.c (tiocsctty): Call `do_tiocsctty' instead of
diff --git a/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S b/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
index f85049185c4..0547b56d7c9 100644
--- a/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
+++ b/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
@@ -1249,11 +1249,12 @@ L(large_page):
 	movdqu	%xmm0, (%esi)
 	movntdq	%xmm1, (%edx)
 	lea	16(%edx), %edx
+	lea	-16(%ecx), %ecx
 	cmp	%al, %dl
 	je	L(copy_page_by_rep)
 L(large_page_loop_init):
 	POP (%esi)
-	lea	-0x90(%ecx), %ecx
+	lea	-0x80(%ecx), %ecx
 	POP (%edi)
 L(large_page_loop):
 	prefetchnta	0x1c0(%eax)