projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 78df0fcb AJ |
1 | /* memset/bzero -- set memory area to CH/0 |
| 2 | Optimized version for x86-64. | |
| 04277e02 | 3 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
| 78df0fcb | 4 | This file is part of the GNU C Library. |
| 78df0fcb AJ |
5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| 78df0fcb AJ |
19 | |
| 20 | #include <sysdep.h> | |
| 78df0fcb | 21 | |
| 5e8c5bb1 L |
22 | #define VEC_SIZE 16 |
| 23 | #define VEC(i) xmm##i | |
| 24 | /* Don't use movups and movaps since it will get larger nop paddings for | |
| 25 | alignment. */ | |
| 26 | #define VMOVU movdqu | |
| 27 | #define VMOVA movdqa | |
| 28 | ||
| ef9c4cb6 | 29 | #define MEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ |
| 5e8c5bb1 L |
30 | movd d, %xmm0; \ |
| 31 | movq r, %rax; \ | |
| 32 | punpcklbw %xmm0, %xmm0; \ | |
| 33 | punpcklwd %xmm0, %xmm0; \ | |
| 34 | pshufd $0, %xmm0, %xmm0 | |
| 35 | ||
| ef9c4cb6 L |
36 | #define WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ |
| 37 | movd d, %xmm0; \ | |
| 38 | movq r, %rax; \ | |
| 39 | pshufd $0, %xmm0, %xmm0 | |
| 40 | ||
| 5e8c5bb1 L |
41 | #define SECTION(p) p |
| 42 | ||
| 43 | #ifndef MEMSET_SYMBOL | |
| 44 | # define MEMSET_CHK_SYMBOL(p,s) p | |
| 45 | # define MEMSET_SYMBOL(p,s) memset | |
| b5cc329c | 46 | #endif |
| ff02d528 | 47 | |
| ef9c4cb6 L |
48 | #ifndef WMEMSET_SYMBOL |
| 49 | # define WMEMSET_CHK_SYMBOL(p,s) p | |
| 50 | # define WMEMSET_SYMBOL(p,s) __wmemset | |
| 51 | #endif | |
| 52 | ||
| 5e8c5bb1 | 53 | #include "multiarch/memset-vec-unaligned-erms.S" |
| 78df0fcb | 54 | |
| 85dd1003 | 55 | libc_hidden_builtin_def (memset) |
| 553cc5f9 | 56 | |
| ef9c4cb6 L |
57 | #if IS_IN (libc) |
| 58 | libc_hidden_def (__wmemset) | |
| 59 | weak_alias (__wmemset, wmemset) | |
| 60 | libc_hidden_weak (wmemset) | |
| 61 | #endif |