1 /* Multiple versions of memcpy. 2 Copyright (C) 2013-2022 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 memcpy before the initialization 21 happened. */ 22 #if defined SHARED && IS_IN (libc) 23 # undef memcpy 24 # define memcpy __redirect_memcpy 25 # include <string.h> 26 # include <shlib-compat.h> 27 # include "init-arch.h" 28 29 extern __typeof (memcpy) __memcpy_ppc attribute_hidden; 30 extern __typeof (memcpy) __memcpy_cell attribute_hidden; 31 extern __typeof (memcpy) __memcpy_power6 attribute_hidden; 32 extern __typeof (memcpy) __memcpy_a2 attribute_hidden; 33 extern __typeof (memcpy) __memcpy_power7 attribute_hidden; 34 # undef memcpy 35 36 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle 37 ifunc symbol properly. */ 38 libc_ifunc_redirected (__redirect_memcpy, memcpy, 39 (hwcap & PPC_FEATURE_HAS_VSX) 40 ? __memcpy_power7 41 : (hwcap & PPC_FEATURE_ARCH_2_06) 42 ? __memcpy_a2 43 : (hwcap & PPC_FEATURE_ARCH_2_05) 44 ? __memcpy_power6 45 : (hwcap & PPC_FEATURE_CELL_BE) 46 ? __memcpy_cell 47 : __memcpy_ppc); 48 #endif 49