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.

1 files changed, 42 insertions, 0 deletions

diff --git a/sysdeps/aarch64/multiarch/memcpy_generic.S b/sysdeps/aarch64/multiarch/memcpy_generic.S
new file mode 100644
index 0000000000..041a77943d
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memcpy_generic.S
@@ -0,0 +1,42 @@
+/* A Generic Optimized memcpy implementation for AARCH64.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The actual memcpy and memmove code is in ../memcpy.S.  If we are
+   building libc this file defines __memcpy_generic and __memmove_generic.
+   Otherwise the include of ../memcpy.S will define the normal __memcpy
+   and__memmove entry points.  */
+
+#include <sysdep.h>
+
+#if IS_IN (libc)
+
+# define MEMCPY __memcpy_generic
+# define MEMMOVE __memmove_generic
+
+/* Do not hide the generic versions of memcpy and memmove, we use them
+   internally.  */
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)
+
+/* It doesn't make sense to send libc-internal memcpy calls through a PLT. */
+	.globl __GI_memcpy; __GI_memcpy = __memcpy_generic
+	.globl __GI_memmove; __GI_memmove = __memmove_generic
+
+#endif
+
+#include "../memcpy.S"