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c5af58b7 GR |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | void *memset(void *dest, int c, size_t l) | |
7 | { | |
8 | char *d = dest; | |
9 | int ch = c & 0xff; | |
10 | int tmp = (ch | ch << 8 | ch << 16 | ch << 24); | |
11 | ||
12 | while (((uintptr_t)d & 0x3) && l--) | |
13 | *d++ = ch; | |
14 | ||
15 | while (l >= 16) { | |
16 | *(((u32 *)d)) = tmp; | |
17 | *(((u32 *)d)+1) = tmp; | |
18 | *(((u32 *)d)+2) = tmp; | |
19 | *(((u32 *)d)+3) = tmp; | |
20 | l -= 16; | |
21 | d += 16; | |
22 | } | |
23 | ||
24 | while (l > 3) { | |
25 | *(((u32 *)d)) = tmp; | |
26 | l -= 4; | |
27 | d += 4; | |
28 | } | |
29 | ||
30 | while (l) { | |
31 | *d = ch; | |
32 | l--; | |
33 | d++; | |
34 | } | |
35 | ||
36 | return dest; | |
37 | } |