1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * arch/mips/boot/compressed/string.c
 4 *
 5 * Very small subset of simple string routines
 6 */
 7
 8#include <linux/compiler_attributes.h>
 9#include <linux/types.h>
10#include <asm/string.h>
11
12void *memcpy(void *dest, const void *src, size_t n)
13{
14	int i;
15	const char *s = src;
16	char *d = dest;
17
18	for (i = 0; i < n; i++)
19		d[i] = s[i];
20	return dest;
21}
22
23void *memset(void *s, int c, size_t n)
24{
25	int i;
26	char *ss = s;
27
28	for (i = 0; i < n; i++)
29		ss[i] = c;
30	return s;
31}
32
33void * __weak memmove(void *dest, const void *src, size_t n)
34{
35	unsigned int i;
36	const char *s = src;
37	char *d = dest;
38
39	if ((uintptr_t)dest < (uintptr_t)src) {
40		for (i = 0; i < n; i++)
41			d[i] = s[i];
42	} else {
43		for (i = n; i > 0; i--)
44			d[i - 1] = s[i - 1];
45	}
46	return dest;
47}