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Greg Ungererea61bc42010-09-07 14:52:52 +10001#ifndef _M68K_STRING_H_
2#define _M68K_STRING_H_
3
4#include <linux/types.h>
5#include <linux/compiler.h>
6
Greg Ungererea61bc42010-09-07 14:52:52 +10007#define __HAVE_ARCH_STRNLEN
8static inline size_t strnlen(const char *s, size_t count)
9{
10 const char *sc = s;
11
12 asm volatile ("\n"
13 "1: subq.l #1,%1\n"
14 " jcs 2f\n"
15 " tst.b (%0)+\n"
16 " jne 1b\n"
17 " subq.l #1,%0\n"
18 "2:"
19 : "+a" (sc), "+d" (count));
20 return sc - s;
21}
22
Greg Ungererea61bc42010-09-07 14:52:52 +100023#define __HAVE_ARCH_STRNCPY
24static inline char *strncpy(char *dest, const char *src, size_t n)
25{
26 char *xdest = dest;
27
28 asm volatile ("\n"
29 " jra 2f\n"
30 "1: move.b (%1),(%0)+\n"
31 " jeq 2f\n"
32 " addq.l #1,%1\n"
33 "2: subq.l #1,%2\n"
34 " jcc 1b\n"
35 : "+a" (dest), "+a" (src), "+d" (n)
36 : : "memory");
37 return xdest;
38}
39
Greg Ungererea61bc42010-09-07 14:52:52 +100040#ifndef CONFIG_COLDFIRE
41#define __HAVE_ARCH_STRCMP
42static inline int strcmp(const char *cs, const char *ct)
43{
44 char res;
45
46 asm ("\n"
47 "1: move.b (%0)+,%2\n" /* get *cs */
48 " cmp.b (%1)+,%2\n" /* compare a byte */
49 " jne 2f\n" /* not equal, break out */
50 " tst.b %2\n" /* at end of cs? */
51 " jne 1b\n" /* no, keep going */
52 " jra 3f\n" /* strings are equal */
53 "2: sub.b -(%1),%2\n" /* *cs - *ct */
54 "3:"
55 : "+a" (cs), "+a" (ct), "=d" (res));
56 return res;
57}
Greg Ungerer982cd252011-02-03 21:58:39 +100058#endif /* CONFIG_COLDFIRE */
Greg Ungererea61bc42010-09-07 14:52:52 +100059
60#define __HAVE_ARCH_MEMMOVE
61extern void *memmove(void *, const void *, __kernel_size_t);
Greg Ungererea61bc42010-09-07 14:52:52 +100062
Greg Ungererf9d693d2011-02-03 21:31:20 +100063#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
64
Greg Ungererea61bc42010-09-07 14:52:52 +100065#define __HAVE_ARCH_MEMSET
66extern void *memset(void *, int, __kernel_size_t);
67#define memset(d, c, n) __builtin_memset(d, c, n)
68
69#define __HAVE_ARCH_MEMCPY
70extern void *memcpy(void *, const void *, __kernel_size_t);
71#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
72
Greg Ungererea61bc42010-09-07 14:52:52 +100073#endif /* _M68K_STRING_H_ */