1 /* Multiple versions of memmove. PowerPC64 version. 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 the definition in lib and for 20 DSO. In static binaries we need memmove before the initialization 21 happened. */ 22 #if defined SHARED && IS_IN (libc) 23 /* Redefine memmove so that the compiler won't complain about the type 24 mismatch with the IFUNC selector in strong_alias, below. */ 25 # undef memmove 26 # define memmove __redirect_memmove 27 # include <string.h> 28 # include "init-arch.h" 29 30 extern __typeof (__redirect_memmove) __libc_memmove; 31 extern __typeof (__redirect_memmove) __memmove_ppc attribute_hidden; 32 extern __typeof (__redirect_memmove) __memmove_power7 attribute_hidden; 33 #ifdef __LITTLE_ENDIAN__ 34 extern __typeof (__redirect_memmove) __memmove_power10 attribute_hidden; 35 #endif 36 37 libc_ifunc (__libc_memmove, 38 #ifdef __LITTLE_ENDIAN__ 39 (hwcap2 & PPC_FEATURE2_ARCH_3_1 40 && hwcap2 & PPC_FEATURE2_HAS_ISEL 41 && hwcap & PPC_FEATURE_HAS_VSX) 42 ? __memmove_power10 : 43 #endif 44 (hwcap & PPC_FEATURE_ARCH_2_06 45 && hwcap & PPC_FEATURE_HAS_ALTIVEC) 46 ? __memmove_power7 47 : __memmove_ppc); 48 49 #undef memmove 50 strong_alias (__libc_memmove, memmove); 51 libc_hidden_ver (__libc_memmove, memmove); 52 #else 53 # include <string/memmove.c> 54 #endif 55