1 /* Multiple versions of memmem. 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-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 30 extern __typeof (__redirect_memmem) MEMMEM_C attribute_hidden; 31 # endif 32 33 # if HAVE_MEMMEM_Z13 34 extern __typeof (__redirect_memmem) MEMMEM_Z13 attribute_hidden; 35 # endif 36 37 # if HAVE_MEMMEM_ARCH13 38 extern __typeof (__redirect_memmem) MEMMEM_ARCH13 attribute_hidden; 39 # endif 40 41 s390_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 ) 48 weak_alias (__memmem, memmem) 49 #endif 50