1
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#ifndef CONFIG_COLDFIRE
42#define __HAVE_ARCH_STRCMP
43static inline int strcmp(const char *cs, const char *ct)
44{
45 char res;
46
47 asm ("\n"
48 "1: move.b (%0)+,%2\n"
49 " cmp.b (%1)+,%2\n"
50 " jne 2f\n"
51 " tst.b %2\n"
52 " jne 1b\n"
53 " jra 3f\n"
54 "2: sub.b -(%1),%2\n"
55 "3:"
56 : "+a" (cs), "+a" (ct), "=d" (res));
57 return res;
58}
59#endif
60
61#define __HAVE_ARCH_MEMMOVE
62extern void *memmove(void *, const void *, __kernel_size_t);
63
64#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
65
66#define __HAVE_ARCH_MEMSET
67extern void *memset(void *, int, __kernel_size_t);
68#define memset(d, c, n) __builtin_memset(d, c, n)
69
70#define __HAVE_ARCH_MEMCPY
71extern void *memcpy(void *, const void *, __kernel_size_t);
72#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
73
74#endif
75