From 3af48cbdfaeb8bc389de1caeb33bc29811da80e8 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hongjiu.lu@intel.com>
Date: Tue, 12 Jan 2010 11:22:03 -0800
Subject: Optimize 32bit memset/memcpy with SSE2/SSSE3.

---
 sysdeps/i386/i686/memmove.S | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

(limited to 'sysdeps/i386/i686/memmove.S')

diff --git a/sysdeps/i386/i686/memmove.S b/sysdeps/i386/i686/memmove.S
index b93b5c729f..981f14f4e0 100644
--- a/sysdeps/i386/i686/memmove.S
+++ b/sysdeps/i386/i686/memmove.S
@@ -26,18 +26,27 @@
 
 #define PARMS	LINKAGE+4	/* one spilled register */
 #define RTN	PARMS
-#define DEST	RTN+RTN_SIZE
-#define SRC	DEST+PTR_SIZE
-#define LEN	SRC+PTR_SIZE
 
 	.text
-#if defined PIC && !defined NOT_IN_libc
-ENTRY (__memmove_chk)
+
+#ifdef USE_AS_BCOPY
+# define SRC	RTN+RTN_SIZE
+# define DEST	SRC+PTR_SIZE
+# define LEN	DEST+PTR_SIZE
+#else
+# define DEST	RTN+RTN_SIZE
+# define SRC	DEST+PTR_SIZE
+# define LEN	SRC+PTR_SIZE
+
+# if defined PIC && !defined NOT_IN_libc
+ENTRY_CHK (__memmove_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
 	jb	HIDDEN_JUMPTARGET (__chk_fail)
-END (__memmove_chk)
+END_CHK (__memmove_chk)
+# endif
 #endif
+
 ENTRY (BP_SYM (memmove))
 	ENTER
 
@@ -69,8 +78,10 @@ ENTRY (BP_SYM (memmove))
 	movsl
 	movl	%edx, %esi
 	cfi_restore (esi)
+#ifndef USE_AS_BCOPY
 	movl	DEST(%esp), %eax
 	RETURN_BOUNDED_POINTER (DEST(%esp))
+#endif
 
 	popl	%edi
 	cfi_adjust_cfa_offset (-4)
@@ -101,8 +112,10 @@ ENTRY (BP_SYM (memmove))
 	movsl
 	movl	%edx, %esi
 	cfi_restore (esi)
+#ifndef USE_AS_BCOPY
 	movl	DEST(%esp), %eax
 	RETURN_BOUNDED_POINTER (DEST(%esp))
+#endif
 
 	cld
 	popl	%edi
@@ -112,4 +125,6 @@ ENTRY (BP_SYM (memmove))
 	LEAVE
 	RET_PTR
 END (BP_SYM (memmove))
+#ifndef USE_AS_BCOPY
 libc_hidden_builtin_def (memmove)
+#endif
-- 
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