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/* Multiple versions of memset. AARCH64 version.
Copyright (C) 2017-2025 Free Software Foundation, Inc.
Copyright The GNU Toolchain Authors.
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
<https://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
#if IS_IN (libc)
/* Redefine memset so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias, below. */
# undef memset
# define memset __redirect_memset
# include <string.h>
# include <init-arch.h>
extern __typeof (__redirect_memset) __libc_memset;
extern __typeof (__redirect_memset) __memset_zva64 attribute_hidden;
extern __typeof (__redirect_memset) __memset_emag attribute_hidden;
extern __typeof (__redirect_memset) __memset_kunpeng attribute_hidden;
extern __typeof (__redirect_memset) __memset_a64fx attribute_hidden;
extern __typeof (__redirect_memset) __memset_generic attribute_hidden;
extern __typeof (__redirect_memset) __memset_mops attribute_hidden;
extern __typeof (__redirect_memset) __memset_oryon1 attribute_hidden;
extern __typeof (__redirect_memset) __memset_sve_zva64 attribute_hidden;
static inline __typeof (__redirect_memset) *
select_memset_ifunc (void)
{
INIT_ARCH ();
if (mops)
return __memset_mops;
if (sve && HAVE_AARCH64_SVE_ASM)
{
if (IS_A64FX (midr) && zva_size == 256)
return __memset_a64fx;
if (prefer_sve_ifuncs && zva_size == 64)
return __memset_sve_zva64;
}
if (IS_ORYON1 (midr) && zva_size == 64)
return __memset_oryon1;
if (IS_KUNPENG920 (midr))
return __memset_kunpeng;
if (IS_EMAG (midr))
return __memset_emag;
if (zva_size == 64)
return __memset_zva64;
return __memset_generic;
}
libc_ifunc (__libc_memset, select_memset_ifunc ());
# undef memset
strong_alias (__libc_memset, memset);
#endif
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