From 6a2c695266fab34cc057256d1b33d2268183f00e Mon Sep 17 00:00:00 2001
From: Steve Ellcey <sellcey@caviumnetworks.com>
Date: Wed, 24 May 2017 16:46:48 -0700
Subject: aarch64: Thunderx specific memcpy and memmove

	* sysdeps/aarch64/memcpy.S (MEMMOVE, MEMCPY): New macros.
	(memmove): Use MEMMOVE for name.
	(memcpy): Use MEMCPY for name.  Change internal labels
	to external labels.
	* sysdeps/aarch64/multiarch/Makefile: New file.
	* sysdeps/aarch64/multiarch/ifunc-impl-list.c: Likewise.
	* sysdeps/aarch64/multiarch/init-arch.h: Likewise.
	* sysdeps/aarch64/multiarch/memcpy.c: Likewise.
	* sysdeps/aarch64/multiarch/memcpy_generic.S: Likewise.
	* sysdeps/aarch64/multiarch/memcpy_thunderx.S: Likewise.
	* sysdeps/aarch64/multiarch/memmove.c: Likewise.
---
 sysdeps/aarch64/memcpy.S | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

(limited to 'sysdeps/aarch64/memcpy.S')

diff --git a/sysdeps/aarch64/memcpy.S b/sysdeps/aarch64/memcpy.S
index 29af8b1026..88a3b90e16 100644
--- a/sysdeps/aarch64/memcpy.S
+++ b/sysdeps/aarch64/memcpy.S
@@ -59,7 +59,14 @@
    Overlapping large forward memmoves use a loop that copies backwards.
 */
 
-ENTRY_ALIGN (memmove, 6)
+#ifndef MEMMOVE
+# define MEMMOVE memmove
+#endif
+#ifndef MEMCPY
+# define MEMCPY memcpy
+#endif
+
+ENTRY_ALIGN (MEMMOVE, 6)
 
 	DELOUSE (0)
 	DELOUSE (1)
@@ -71,9 +78,9 @@ ENTRY_ALIGN (memmove, 6)
 	b.lo	L(move_long)
 
 	/* Common case falls through into memcpy.  */
-END (memmove)
-libc_hidden_builtin_def (memmove)
-ENTRY (memcpy)
+END (MEMMOVE)
+libc_hidden_builtin_def (MEMMOVE)
+ENTRY (MEMCPY)
 
 	DELOUSE (0)
 	DELOUSE (1)
@@ -169,8 +176,8 @@ L(copy_long):
 	ldp	C_l, C_h, [src, 48]
 	ldp	D_l, D_h, [src, 64]!
 	subs	count, count, 128 + 16	/* Test and readjust count.  */
-	b.ls	2f
-1:
+	b.ls	L(last64)
+L(loop64):
 	stp	A_l, A_h, [dst, 16]
 	ldp	A_l, A_h, [src, 16]
 	stp	B_l, B_h, [dst, 32]
@@ -180,12 +187,12 @@ L(copy_long):
 	stp	D_l, D_h, [dst, 64]!
 	ldp	D_l, D_h, [src, 64]!
 	subs	count, count, 64
-	b.hi	1b
+	b.hi	L(loop64)
 
 	/* Write the last full set of 64 bytes.  The remainder is at most 64
 	   bytes, so it is safe to always copy 64 bytes from the end even if
 	   there is just 1 byte left.  */
-2:
+L(last64):
 	ldp	E_l, E_h, [srcend, -64]
 	stp	A_l, A_h, [dst, 16]
 	ldp	A_l, A_h, [srcend, -48]
@@ -256,5 +263,5 @@ L(move_long):
 	stp	C_l, C_h, [dstin]
 3:	ret
 
-END (memcpy)
-libc_hidden_builtin_def (memcpy)
+END (MEMCPY)
+libc_hidden_builtin_def (MEMCPY)
-- 
cgit 1.4.1