1 /* Multiple versions of strncmp. 2 Copyright (C) 2013-2021 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 /* Define multiple versions only for definition in libc. */ 20 #if defined SHARED && IS_IN (libc) 21 # define strncmp __redirect_strncmp 22 /* Omit the strncmp inline definitions because it would redefine strncmp. */ 23 # define __NO_STRING_INLINES 24 # include <string.h> 25 # include <shlib-compat.h> 26 # include "init-arch.h" 27 28 extern __typeof (strncmp) __strncmp_ppc attribute_hidden; 29 extern __typeof (strncmp) __strncmp_power4 attribute_hidden; 30 extern __typeof (strncmp) __strncmp_power7 attribute_hidden; 31 # undef strncmp 32 33 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle 34 ifunc symbol properly. */ 35 libc_ifunc_redirected (__redirect_strncmp, strncmp, 36 (hwcap & PPC_FEATURE_HAS_VSX) 37 ? __strncmp_power7 38 : __strncmp_ppc); 39 #endif 40