1/* Multiple versions of memmem.
2 Copyright (C) 2018-2024 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#include <ifunc-memmem.h>
20
21#if HAVE_MEMMEM_IFUNC
22# define memmem __redirect_memmem
23# define __memmem __redirect___memmem
24# include <string.h>
25# include <ifunc-resolve.h>
26# undef memmem
27# undef __memmem
28
29# if HAVE_MEMMEM_C
30extern __typeof (__redirect_memmem) MEMMEM_C attribute_hidden;
31# endif
32
33# if HAVE_MEMMEM_Z13
34extern __typeof (__redirect_memmem) MEMMEM_Z13 attribute_hidden;
35# endif
36
37# if HAVE_MEMMEM_ARCH13
38extern __typeof (__redirect_memmem) MEMMEM_ARCH13 attribute_hidden;
39# endif
40
41s390_libc_ifunc_expr (__redirect_memmem, __memmem,
42 (HAVE_MEMMEM_ARCH13 && (hwcap & HWCAP_S390_VXRS_EXT2))
43 ? MEMMEM_ARCH13
44 : (HAVE_MEMMEM_Z13 && (hwcap & HWCAP_S390_VX))
45 ? MEMMEM_Z13
46 : MEMMEM_DEFAULT
47 )
48weak_alias (__memmem, memmem)
49#endif
50

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