1 /* Multiple versions of strstr. 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 #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 28 extern __typeof (__redirect_strstr) STRSTR_C attribute_hidden; 29 # endif 30 31 # if HAVE_STRSTR_Z13 32 extern __typeof (__redirect_strstr) STRSTR_Z13 attribute_hidden; 33 # endif 34 35 # if HAVE_STRSTR_ARCH13 36 extern __typeof (__redirect_strstr) STRSTR_ARCH13 attribute_hidden; 37 # endif 38 39 s390_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