1/* Multiple versions of strstr.
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-strstr.h>
20
21#if HAVE_STRSTR_IFUNC
22# define strstr __redirect_strstr
23# include <string.h>
24# include <ifunc-resolve.h>
25# undef strstr
26
27# if HAVE_STRSTR_C
28extern __typeof (__redirect_strstr) STRSTR_C attribute_hidden;
29# endif
30
31# if HAVE_STRSTR_Z13
32extern __typeof (__redirect_strstr) STRSTR_Z13 attribute_hidden;
33# endif
34
35# if HAVE_STRSTR_ARCH13
36extern __typeof (__redirect_strstr) STRSTR_ARCH13 attribute_hidden;
37# endif
38
39s390_libc_ifunc_expr (__redirect_strstr, strstr,
40 (HAVE_STRSTR_ARCH13 && (hwcap & HWCAP_S390_VXRS_EXT2))
41 ? STRSTR_ARCH13
42 : (HAVE_STRSTR_Z13 && (hwcap & HWCAP_S390_VX))
43 ? STRSTR_Z13
44 : STRSTR_DEFAULT
45 )
46#endif
47

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