1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/x86_64/memmove.S b/sysdeps/x86_64/memmove.S
new file mode 100644
index 0000000000..9cc92ff9a9
--- /dev/null
+++ b/sysdeps/x86_64/memmove.S
@@ -0,0 +1,71 @@
+/* Optimized memmove for x86-64.
+   Copyright (C) 2016-2018 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/>.  */
+
+#include <sysdep.h>
+
+#define VEC_SIZE	16
+#define VEC(i)		xmm##i
+#define PREFETCHNT	prefetchnta
+#define VMOVNT		movntdq
+/* Use movups and movaps for smaller code sizes.  */
+#define VMOVU		movups
+#define VMOVA		movaps
+
+#define SECTION(p)		p
+
+#ifdef USE_MULTIARCH
+# if !IS_IN (libc)
+#  define MEMCPY_SYMBOL(p,s)		memcpy
+# endif
+#else
+# if defined SHARED && IS_IN (libc)
+#  define MEMCPY_SYMBOL(p,s)		__memcpy
+# else
+#  define MEMCPY_SYMBOL(p,s)		memcpy
+# endif
+#endif
+#if !defined USE_MULTIARCH || !IS_IN (libc)
+# define MEMPCPY_SYMBOL(p,s)		__mempcpy
+#endif
+#ifndef MEMMOVE_SYMBOL
+# define MEMMOVE_CHK_SYMBOL(p,s)	p
+# define MEMMOVE_SYMBOL(p,s)		memmove
+#endif
+
+#include "multiarch/memmove-vec-unaligned-erms.S"
+
+#ifndef USE_MULTIARCH
+libc_hidden_builtin_def (memmove)
+# if defined SHARED && IS_IN (libc)
+strong_alias (memmove, __memcpy)
+libc_hidden_ver (memmove, memcpy)
+# endif
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)
+
+# if defined SHARED && IS_IN (libc)
+#  undef memcpy
+#  include <shlib-compat.h>
+versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14);
+
+#  if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
+compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5);
+#  endif
+# endif
+#endif