1 /* Multiple versions of strncpy. 2 Copyright (C) 2014-2022 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 /* Define multiple versions only for definition in libc. */ 20 #if IS_IN (libc) 21 # define strncpy __redirect_strncpy 22 /* Omit the strncpy inline definitions because it would redefine strncpy. */ 23 # define __NO_STRING_INLINES 24 # include <string.h> 25 # include <shlib-compat.h> 26 # include "init-arch.h" 27 28 extern __typeof (strncpy) __strncpy_ppc attribute_hidden; 29 extern __typeof (strncpy) __strncpy_power7 attribute_hidden; 30 extern __typeof (strncpy) __strncpy_power8 attribute_hidden; 31 # ifdef __LITTLE_ENDIAN__ 32 extern __typeof (strncpy) __strncpy_power9 attribute_hidden; 33 # endif 34 # undef strncpy 35 36 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle 37 ifunc symbol properly. */ 38 libc_ifunc_redirected (__redirect_strncpy, strncpy, 39 # ifdef __LITTLE_ENDIAN__ 40 (hwcap2 & PPC_FEATURE2_ARCH_3_00) && 41 (hwcap & PPC_FEATURE_HAS_VSX) 42 ? __strncpy_power9 : 43 # endif 44 (hwcap2 & PPC_FEATURE2_ARCH_2_07) 45 ? __strncpy_power8 46 : (hwcap & PPC_FEATURE_ARCH_2_06) 47 ? __strncpy_power7 48 : __strncpy_ppc); 49 50 #endif 51