1 /* Multiple versions of memmove. AARCH64 version. 2 Copyright (C) 2017-2021 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 libc. */ 20 21 #if IS_IN (libc) 22 /* Redefine memmove so that the compiler won't complain about the type 23 mismatch with the IFUNC selector in strong_alias, below. */ 24 # undef memmove 25 # define memmove __redirect_memmove 26 # include <string.h> 27 # include <init-arch.h> 28 29 extern __typeof (__redirect_memmove) __libc_memmove; 30 31 extern __typeof (__redirect_memmove) __memmove_generic attribute_hidden; 32 extern __typeof (__redirect_memmove) __memmove_simd attribute_hidden; 33 extern __typeof (__redirect_memmove) __memmove_thunderx attribute_hidden; 34 extern __typeof (__redirect_memmove) __memmove_thunderx2 attribute_hidden; 35 extern __typeof (__redirect_memmove) __memmove_falkor attribute_hidden; 36 # if HAVE_AARCH64_SVE_ASM 37 extern __typeof (__redirect_memmove) __memmove_a64fx attribute_hidden; 38 # endif 39 40 libc_ifunc (__libc_memmove, 41 (IS_THUNDERX (midr) 42 ? __memmove_thunderx 43 : (IS_FALKOR (midr) || IS_PHECDA (midr) 44 ? __memmove_falkor 45 : (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr) 46 ? __memmove_thunderx2 47 : (IS_NEOVERSE_N1 (midr) || IS_NEOVERSE_N2 (midr) 48 || IS_NEOVERSE_V1 (midr) 49 ? __memmove_simd 50 # if HAVE_AARCH64_SVE_ASM 51 : (IS_A64FX (midr) 52 ? __memmove_a64fx 53 : __memmove_generic)))))); 54 # else 55 : __memmove_generic))))); 56 # endif 57 # undef memmove 58 strong_alias (__libc_memmove, memmove); 59 #endif 60