From 88d85d4f001fac0fd7ef4e3d05ca8a7d50b0c98f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 28 Mar 2012 22:35:26 -0700
Subject: Optimize mempcpy on sparc.

	* sysdeps/sparc/sparc32/memcpy.S: Implement mempcpy using a stub
	that branches into memcpy.
	* sysdeps/sparc/sparc64/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Add mempcpy multiarch
	bits.
	* sysdeps/sparc/sparc64/rtld-memcpy.c: Include generic mempcpy
	implementation too.
	* sysdeps/sparc/mempcpy.S: New file.
---
 sysdeps/sparc/sparc32/memcpy.S | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'sysdeps/sparc/sparc32/memcpy.S')

diff --git a/sysdeps/sparc/sparc32/memcpy.S b/sysdeps/sparc/sparc32/memcpy.S
index a36f1d6aa0..82fa6d1045 100644
--- a/sysdeps/sparc/sparc32/memcpy.S
+++ b/sysdeps/sparc/sparc32/memcpy.S
@@ -104,11 +104,17 @@
 	std	%t2, [%dst + offset + offset2 + 0x08];
 
 	.text
-	.align	4
+ENTRY(__mempcpy)
+	add		%o0, %o2, %g1
+	ba		101f
+	 st		%g1, [%sp + 64]
+END(__mempcpy)
 
+	.align	4
 ENTRY(memcpy)		/* %o0=dst %o1=src %o2=len */
-	sub		%o0, %o1, %o4
 	st		%o0, [%sp + 64]
+101:
+	sub		%o0, %o1, %o4
 9:	andcc		%o4, 3, %o5
 0:	bne		86f
 	 cmp		%o2, 15
@@ -641,3 +647,7 @@ ENTRY(memcpy)		/* %o0=dst %o1=src %o2=len */
 END(memcpy)
 
 libc_hidden_builtin_def (memcpy)
+
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)
-- 
cgit 1.4.1