1 /* Multiple versions of strlen. AARCH64 version. 2 Copyright (C) 2018-2022 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 libc. */ 20 21 #if IS_IN (libc) 22 /* Redefine strlen so that the compiler won't complain about the type 23 mismatch with the IFUNC selector in strong_alias, below. */ 24 # undef strlen 25 # define strlen __redirect_strlen 26 # include <string.h> 27 # include <init-arch.h> 28 29 extern __typeof (__redirect_strlen) __strlen; 30 31 extern __typeof (__redirect_strlen) __strlen_mte attribute_hidden; 32 extern __typeof (__redirect_strlen) __strlen_asimd attribute_hidden; 33 34 libc_ifunc (__strlen, (mte ? __strlen_mte : __strlen_asimd)); 35 36 # undef strlen 37 strong_alias (__strlen, strlen); 38 #endif 39