1/* Multiple versions of memchr.
2 Copyright (C) 2015-2022 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#include <ifunc-memchr.h>
20
21#if HAVE_MEMCHR_IFUNC
22# define memchr __redirect_memchr
23# include <string.h>
24# undef memchr
25# include <ifunc-resolve.h>
26
27# if HAVE_MEMCHR_Z900_G5
28extern __typeof (__redirect_memchr) MEMCHR_Z900_G5 attribute_hidden;
29# endif
30
31# if HAVE_MEMCHR_Z13
32extern __typeof (__redirect_memchr) MEMCHR_Z13 attribute_hidden;
33# endif
34
35s390_libc_ifunc_expr (__redirect_memchr, __memchr,
36 (HAVE_MEMCHR_Z13 && (hwcap & HWCAP_S390_VX))
37 ? MEMCHR_Z13
38 : MEMCHR_DEFAULT
39 )
40weak_alias (__memchr, memchr)
41#endif
42

source code of glibc/sysdeps/s390/memchr.c