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/* Enumerate available IFUNC implementations of a function. RISCV version.
Copyright (C) 2024 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 <ifunc-impl-list.h>
#include <string.h>
#include <sys/hwprobe.h>
size_t
__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
size_t max)
{
size_t i = max;
bool fast_unaligned = false;
struct riscv_hwprobe pair = { .key = RISCV_HWPROBE_KEY_CPUPERF_0 };
if (__riscv_hwprobe (&pair, 1, 0, NULL, 0) == 0
&& (pair.value & RISCV_HWPROBE_MISALIGNED_MASK)
== RISCV_HWPROBE_MISALIGNED_FAST)
fast_unaligned = true;
IFUNC_IMPL (i, name, memcpy,
IFUNC_IMPL_ADD (array, i, memcpy, fast_unaligned,
__memcpy_noalignment)
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_generic))
return 0;
}
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