string.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_STRING_H
 3#define _ASM_X86_STRING_H
 4
 5#ifdef CONFIG_X86_32
 6# include <asm/string_32.h>
 7#else
 8# include <asm/string_64.h>
 9#endif
10
11static __always_inline void *__inline_memcpy(void *to, const void *from, size_t len)
12{
13	void *ret = to;
14
15	asm volatile("rep movsb"
16		     : "+D" (to), "+S" (from), "+c" (len)
17		     : : "memory");
18	return ret;
19}
20
21static __always_inline void *__inline_memset(void *s, int v, size_t n)
22{
23	void *ret = s;
24
25	asm volatile("rep stosb"
26		     : "+D" (s), "+c" (n)
27		     : "a" ((uint8_t)v)
28		     : "memory");
29	return ret;
30}
31
32#endif /* _ASM_X86_STRING_H */