1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68K_STRING_H_
 3#define _M68K_STRING_H_
 4
 5#include <linux/types.h>
 6#include <linux/compiler.h>
 7
 8#define __HAVE_ARCH_STRNLEN
 9static inline size_t strnlen(const char *s, size_t count)
10{
11	const char *sc = s;
12
13	asm volatile ("\n"
14		"1:     subq.l  #1,%1\n"
15		"       jcs     2f\n"
16		"       tst.b   (%0)+\n"
17		"       jne     1b\n"
18		"       subq.l  #1,%0\n"
19		"2:"
20		: "+a" (sc), "+d" (count));
21	return sc - s;
22}
23
24#define __HAVE_ARCH_STRNCPY
25static inline char *strncpy(char *dest, const char *src, size_t n)
26{
27	char *xdest = dest;
28
29	asm volatile ("\n"
30		"	jra	2f\n"
31		"1:	move.b	(%1),(%0)+\n"
32		"	jeq	2f\n"
33		"	addq.l	#1,%1\n"
34		"2:	subq.l	#1,%2\n"
35		"	jcc	1b\n"
36		: "+a" (dest), "+a" (src), "+d" (n)
37		: : "memory");
38	return xdest;
39}
40
41#define __HAVE_ARCH_MEMMOVE
42extern void *memmove(void *, const void *, __kernel_size_t);
43
44extern int memcmp(const void *, const void *, __kernel_size_t);
45#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
46
47#define __HAVE_ARCH_MEMSET
48extern void *memset(void *, int, __kernel_size_t);
49#define memset(d, c, n) __builtin_memset(d, c, n)
50
51#define __HAVE_ARCH_MEMCPY
52extern void *memcpy(void *, const void *, __kernel_size_t);
53#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
54
55#endif /* _M68K_STRING_H_ */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68K_STRING_H_
 3#define _M68K_STRING_H_
 4
 5#include <linux/types.h>
 6#include <linux/compiler.h>
 7
 8#define __HAVE_ARCH_STRNLEN
 9static inline size_t strnlen(const char *s, size_t count)
10{
11	const char *sc = s;
12
13	asm volatile ("\n"
14		"1:     subq.l  #1,%1\n"
15		"       jcs     2f\n"
16		"       tst.b   (%0)+\n"
17		"       jne     1b\n"
18		"       subq.l  #1,%0\n"
19		"2:"
20		: "+a" (sc), "+d" (count));
21	return sc - s;
22}
23
24#define __HAVE_ARCH_STRNCPY
25static inline char *strncpy(char *dest, const char *src, size_t n)
26{
27	char *xdest = dest;
28
29	asm volatile ("\n"
30		"	jra	2f\n"
31		"1:	move.b	(%1),(%0)+\n"
32		"	jeq	2f\n"
33		"	addq.l	#1,%1\n"
34		"2:	subq.l	#1,%2\n"
35		"	jcc	1b\n"
36		: "+a" (dest), "+a" (src), "+d" (n)
37		: : "memory");
38	return xdest;
39}
40
41#define __HAVE_ARCH_MEMMOVE
42extern void *memmove(void *, const void *, __kernel_size_t);
43
 
44#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
45
46#define __HAVE_ARCH_MEMSET
47extern void *memset(void *, int, __kernel_size_t);
48#define memset(d, c, n) __builtin_memset(d, c, n)
49
50#define __HAVE_ARCH_MEMCPY
51extern void *memcpy(void *, const void *, __kernel_size_t);
52#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
53
54#endif /* _M68K_STRING_H_ */