| /* memset/bzero -- set memory area to CH/0 |
| Optimized version for x86-64. |
| Copyright (C) 2002-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| |
| #define VEC_SIZE 16 |
| #define VEC(i) xmm##i |
| /* Don't use movups and movaps since it will get larger nop paddings for |
| alignment. */ |
| #define VMOVU movdqu |
| #define VMOVA movdqa |
| |
| #define MEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ |
| movd d, %xmm0; \ |
| movq r, %rax; \ |
| punpcklbw %xmm0, %xmm0; \ |
| punpcklwd %xmm0, %xmm0; \ |
| pshufd $0, %xmm0, %xmm0 |
| |
| #define WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ |
| movd d, %xmm0; \ |
| movq r, %rax; \ |
| pshufd $0, %xmm0, %xmm0 |
| |
| #define SECTION(p) p |
| |
| #ifndef MEMSET_SYMBOL |
| # define MEMSET_CHK_SYMBOL(p,s) p |
| # define MEMSET_SYMBOL(p,s) memset |
| #endif |
| |
| #ifndef WMEMSET_SYMBOL |
| # define WMEMSET_CHK_SYMBOL(p,s) p |
| # define WMEMSET_SYMBOL(p,s) __wmemset |
| #endif |
| |
| #include "multiarch/memset-vec-unaligned-erms.S" |
| |
| libc_hidden_builtin_def (memset) |
| |
| #if IS_IN (libc) |
| libc_hidden_def (__wmemset) |
| weak_alias (__wmemset, wmemset) |
| libc_hidden_weak (wmemset) |
| #endif |