1/* strstr variant information on S/390 version.
2 Copyright (C) 2018-2022 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#if defined USE_MULTIARCH && IS_IN (libc) \
20 && ! defined HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT
21# define HAVE_STRSTR_IFUNC 1
22#else
23# define HAVE_STRSTR_IFUNC 0
24#endif
25
26#ifdef HAVE_S390_VX_ASM_SUPPORT
27# define HAVE_STRSTR_IFUNC_AND_VX_SUPPORT HAVE_STRSTR_IFUNC
28#else
29# define HAVE_STRSTR_IFUNC_AND_VX_SUPPORT 0
30#endif
31
32#ifdef HAVE_S390_ARCH13_ASM_SUPPORT
33# define HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT HAVE_STRSTR_IFUNC
34#else
35# define HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT 0
36#endif
37
38#if defined HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT
39# define STRSTR_DEFAULT STRSTR_ARCH13
40# define HAVE_STRSTR_C 0
41# define HAVE_STRSTR_Z13 1
42# define STRSTR_Z13_ONLY_USED_AS_FALLBACK 1
43# define HAVE_STRSTR_ARCH13 1
44#elif defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
45# define STRSTR_DEFAULT STRSTR_Z13
46# define HAVE_STRSTR_C 0
47# define HAVE_STRSTR_Z13 1
48# define HAVE_STRSTR_ARCH13 HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT
49#else
50# define STRSTR_DEFAULT STRSTR_C
51# define HAVE_STRSTR_C 1
52# define HAVE_STRSTR_Z13 HAVE_STRSTR_IFUNC_AND_VX_SUPPORT
53# define HAVE_STRSTR_ARCH13 HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT
54#endif
55
56#ifndef STRSTR_Z13_ONLY_USED_AS_FALLBACK
57# define STRSTR_Z13_ONLY_USED_AS_FALLBACK 0
58#endif
59
60#if HAVE_STRSTR_C
61# define STRSTR_C __strstr_c
62#else
63# define STRSTR_C NULL
64#endif
65
66#if HAVE_STRSTR_Z13
67# define STRSTR_Z13 __strstr_vx
68#else
69# define STRSTR_Z13 NULL
70#endif
71
72#if HAVE_STRSTR_ARCH13
73# define STRSTR_ARCH13 __strstr_arch13
74#else
75# define STRSTR_ARCH13 NULL
76#endif
77

source code of glibc/sysdeps/s390/ifunc-strstr.h