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/* Multiple versions of memmove.
All versions must be listed in ifunc-impl-list.c.
Copyright (C) 2010-2016 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/>. */
#if IS_IN (libc)
# define MEMMOVE __memmove_sse2
# ifdef SHARED
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(name) \
__hidden_ver1 (__memmove_sse2, __GI_memmove, __memmove_sse2);
# endif
/* Redefine memmove so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias, below. */
# undef memmove
# define memmove __redirect_memmove
# include <string.h>
# undef memmove
extern __typeof (__redirect_memmove) __memmove_sse2 attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_ssse3 attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_ssse3_back attribute_hidden;
extern __typeof (__redirect_memmove) __memmove_avx_unaligned attribute_hidden;
# ifdef HAVE_AVX512_ASM_SUPPORT
extern __typeof (__redirect_memmove) __memmove_avx512_no_vzeroupper attribute_hidden;
# endif
#endif
#include "string/memmove.c"
#if IS_IN (libc)
# include <shlib-compat.h>
# include "init-arch.h"
/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
ifunc symbol properly. */
extern __typeof (__redirect_memmove) __libc_memmove;
libc_ifunc (__libc_memmove,
#ifdef HAVE_AVX512_ASM_SUPPORT
HAS_ARCH_FEATURE (AVX512F_Usable)
&& HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
? __memmove_avx512_no_vzeroupper
:
#endif
(HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
? __memmove_avx_unaligned
: (HAS_CPU_FEATURE (SSSE3)
? (HAS_ARCH_FEATURE (Fast_Copy_Backward)
? __memmove_ssse3_back : __memmove_ssse3)
: __memmove_sse2)));
strong_alias (__libc_memmove, memmove)
# if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5);
# endif
#endif
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