1 /* Multiple versions of memcpy. PowerPC64 version. 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 the definition in lib and for 20 DSO. In static binaries we need memcpy before the initialization 21 happened. */ 22 #if defined SHARED && IS_IN (libc) 23 /* Redefine memcpy so that the compiler won't complain about the type 24 mismatch with the IFUNC selector in strong_alias, below. */ 25 # undef memcpy 26 # define memcpy __redirect_memcpy 27 # include <string.h> 28 # include "init-arch.h" 29 30 extern __typeof (__redirect_memcpy) __libc_memcpy; 31 32 extern __typeof (__redirect_memcpy) __memcpy_ppc attribute_hidden; 33 extern __typeof (__redirect_memcpy) __memcpy_power4 attribute_hidden; 34 extern __typeof (__redirect_memcpy) __memcpy_cell attribute_hidden; 35 extern __typeof (__redirect_memcpy) __memcpy_power6 attribute_hidden; 36 extern __typeof (__redirect_memcpy) __memcpy_a2 attribute_hidden; 37 extern __typeof (__redirect_memcpy) __memcpy_power7 attribute_hidden; 38 extern __typeof (__redirect_memcpy) __memcpy_power8_cached attribute_hidden; 39 # if defined __LITTLE_ENDIAN__ 40 extern __typeof (__redirect_memcpy) __memcpy_power10 attribute_hidden; 41 # endif 42 43 libc_ifunc (__libc_memcpy, 44 # if defined __LITTLE_ENDIAN__ 45 (hwcap2 & PPC_FEATURE2_ARCH_3_1 && hwcap & PPC_FEATURE_HAS_VSX) 46 ? __memcpy_power10 : 47 # endif 48 (hwcap2 & PPC_FEATURE2_ARCH_2_07 49 && hwcap & PPC_FEATURE_HAS_ALTIVEC 50 && use_cached_memopt) 51 ? __memcpy_power8_cached : 52 (hwcap & PPC_FEATURE_ARCH_2_06 53 && hwcap & PPC_FEATURE_HAS_ALTIVEC) 54 ? __memcpy_power7 : 55 (hwcap & PPC_FEATURE_ARCH_2_06) 56 ? __memcpy_a2 : 57 (hwcap & PPC_FEATURE_ARCH_2_05) 58 ? __memcpy_power6 : 59 (hwcap & PPC_FEATURE_CELL_BE) 60 ? __memcpy_cell : 61 (hwcap & PPC_FEATURE_POWER4) 62 ? __memcpy_power4 63 : __memcpy_ppc); 64 65 #undef memcpy 66 strong_alias (__libc_memcpy, memcpy); 67 libc_hidden_ver (__libc_memcpy, memcpy); 68 #endif 69