1/* Symbol rediretion for loader/static initialization code.
2 Copyright (C) 2022-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#ifndef _DL_IFUNC_GENERIC_H
20#define _DL_IFUNC_GENERIC_H
21
22#ifndef SHARED
23
24#include <isa-level.h>
25
26#if MINIMUM_X86_ISA_LEVEL >= 4
27# define HAVE_MEMSET_IFUNC_GENERIC "__memset_evex_unaligned"
28#elif MINIMUM_X86_ISA_LEVEL == 3
29# define HAVE_MEMSET_IFUNC_GENERIC "__memset_avx2_unaligned"
30#else
31# define HAVE_MEMSET_IFUNC_GENERIC "__memset_sse2_unaligned"
32#endif
33
34asm ("memset = " HAVE_MEMSET_IFUNC_GENERIC);
35
36
37#if MINIMUM_X86_ISA_LEVEL >= 4
38# define HAVE_MEMCMP_IFUNC_GENERIC "__memcmp_evex_movbe"
39#elif MINIMUM_X86_ISA_LEVEL == 3
40# define HAVE_MEMCMP_IFUNC_GENERIC "__memcmp_avx2_movbe"
41#else
42# define HAVE_MEMCMP_IFUNC_GENERIC "__memcmp_sse2"
43#endif
44
45asm ("memcmp = " HAVE_MEMCMP_IFUNC_GENERIC);
46
47#endif /* SHARED */
48
49#endif
50

source code of glibc/sysdeps/x86_64/multiarch/dl-symbol-redir-ifunc.h