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78df0fcb AJ |
1 | /* memset/bzero -- set memory area to CH/0 |
2 | Optimized version for x86-64. | |
688903eb | 3 | Copyright (C) 2002-2018 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 |