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/* Enumerate available IFUNC implementations of a function. ARM version.
Copyright (C) 2013-2020 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
<https://www.gnu.org/licenses/>. */
#include <stdbool.h>
#include <string.h>
#include <ldsodefs.h>
#include <sysdep.h>
#include <ifunc-impl-list.h>
/* Fill ARRAY of MAX elements with IFUNC implementations for function
NAME and return the number of valid entries. */
size_t
__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
size_t max)
{
size_t i = 0;
bool use_neon = true;
#ifdef __ARM_NEON__
# define __memcpy_neon memcpy
# define __memchr_neon memchr
#else
use_neon = (GLRO(dl_hwcap) & HWCAP_ARM_NEON) != 0;
#endif
#ifndef __ARM_NEON__
bool use_vfp = true;
# ifdef __SOFTFP__
use_vfp = (GLRO(dl_hwcap) & HWCAP_ARM_VFP) != 0;
# endif
#endif
IFUNC_IMPL (i, name, memcpy,
IFUNC_IMPL_ADD (array, i, memcpy, use_neon, __memcpy_neon)
#ifndef __ARM_NEON__
IFUNC_IMPL_ADD (array, i, memcpy, use_vfp, __memcpy_vfp)
#endif
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_arm));
IFUNC_IMPL (i, name, memchr,
IFUNC_IMPL_ADD (array, i, memchr, use_neon, __memchr_neon)
IFUNC_IMPL_ADD (array, i, memchr, 1, __memchr_noneon));
return i;
}
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