/* memset implementation for the dynamic linker. This is separate from the libc implementation to avoid writing to SSE registers. Copyright (C) 2013 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include "asm-syntax.h" .text /* void *memset (void *dest, char c, size_t count) dest => %rdi c => %rsi count => %rdx */ ENTRY (memset) mov %rdx, %rcx movzbl %sil, %eax mov %rdi, %rdx rep stosb mov %rdx, %rax ret END (memset) libc_hidden_builtin_def (memset)