2016-06-08 20:57:50 +00:00
|
|
|
/* Optimized memmove for x86-64.
|
2017-01-01 00:14:16 +00:00
|
|
|
Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
2016-06-08 20:57:50 +00:00
|
|
|
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
|
2017-08-04 19:27:00 +00:00
|
|
|
# if !IS_IN (libc)
|
2016-06-08 20:57:50 +00:00
|
|
|
# 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
|
2017-08-04 19:27:00 +00:00
|
|
|
#if !defined USE_MULTIARCH || !IS_IN (libc)
|
2016-06-08 20:57:50 +00:00
|
|
|
# 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
|
