1/* memset/bzero -- set memory area to CH/0
2 Optimized version for x86-64.
3 Copyright (C) 2002-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <sysdep.h>
21#define USE_WITH_SSE2 1
22
23#define VEC_SIZE 16
24#define MOV_SIZE 3
25#define RET_SIZE 1
26
27#define VEC(i) xmm##i
28#define VMOVU movups
29#define VMOVA movaps
30
31#define MEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \
32 movd d, %xmm0; \
33 movq r, %rax; \
34 punpcklbw %xmm0, %xmm0; \
35 punpcklwd %xmm0, %xmm0; \
36 pshufd $0, %xmm0, %xmm0
37
38#define WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \
39 movd d, %xmm0; \
40 movq r, %rax; \
41 pshufd $0, %xmm0, %xmm0
42
43#define SECTION(p) p
44
45#ifndef MEMSET_SYMBOL
46# define MEMSET_CHK_SYMBOL(p,s) p
47# define MEMSET_SYMBOL(p,s) memset
48#endif
49
50#ifndef WMEMSET_SYMBOL
51# define WMEMSET_CHK_SYMBOL(p,s) p
52# define WMEMSET_SYMBOL(p,s) __wmemset
53#endif
54
55#include "multiarch/memset-vec-unaligned-erms.S"
56
57libc_hidden_builtin_def (memset)
58
59#if IS_IN (libc)
60libc_hidden_def (__wmemset)
61weak_alias (__wmemset, wmemset)
62libc_hidden_weak (wmemset)
63#endif
64