Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _M68K_STRING_H_ |
2 | #define _M68K_STRING_H_ | |
3 | ||
d6359fd7 RZ |
4 | #include <linux/types.h> |
5 | #include <linux/compiler.h> | |
1da177e4 | 6 | |
d6359fd7 | 7 | static inline size_t __kernel_strlen(const char *s) |
1da177e4 | 8 | { |
d6359fd7 | 9 | const char *sc; |
1da177e4 | 10 | |
d6359fd7 RZ |
11 | for (sc = s; *sc++; ) |
12 | ; | |
13 | return sc - s - 1; | |
1da177e4 LT |
14 | } |
15 | ||
d6359fd7 | 16 | static inline char *__kernel_strcpy(char *dest, const char *src) |
1da177e4 | 17 | { |
d6359fd7 RZ |
18 | char *xdest = dest; |
19 | ||
20 | asm volatile ("\n" | |
21 | "1: move.b (%1)+,(%0)+\n" | |
22 | " jne 1b" | |
23 | : "+a" (dest), "+a" (src) | |
24 | : : "memory"); | |
25 | return xdest; | |
1da177e4 LT |
26 | } |
27 | ||
d6359fd7 | 28 | #ifndef __IN_STRING_C |
1da177e4 | 29 | |
d6359fd7 RZ |
30 | #define __HAVE_ARCH_STRLEN |
31 | #define strlen(s) (__builtin_constant_p(s) ? \ | |
32 | __builtin_strlen(s) : \ | |
33 | __kernel_strlen(s)) | |
1da177e4 | 34 | |
d6359fd7 RZ |
35 | #define __HAVE_ARCH_STRNLEN |
36 | static inline size_t strnlen(const char *s, size_t count) | |
1da177e4 | 37 | { |
d6359fd7 RZ |
38 | const char *sc = s; |
39 | ||
40 | asm volatile ("\n" | |
41 | "1: subq.l #1,%1\n" | |
42 | " jcs 2f\n" | |
43 | " tst.b (%0)+\n" | |
44 | " jne 1b\n" | |
45 | " subq.l #1,%0\n" | |
46 | "2:" | |
47 | : "+a" (sc), "+d" (count)); | |
48 | return sc - s; | |
1da177e4 LT |
49 | } |
50 | ||
d6359fd7 RZ |
51 | #define __HAVE_ARCH_STRCPY |
52 | #if __GNUC__ >= 4 | |
53 | #define strcpy(d, s) (__builtin_constant_p(s) && \ | |
54 | __builtin_strlen(s) <= 32 ? \ | |
55 | __builtin_strcpy(d, s) : \ | |
56 | __kernel_strcpy(d, s)) | |
57 | #else | |
58 | #define strcpy(d, s) __kernel_strcpy(d, s) | |
59 | #endif | |
1da177e4 | 60 | |
d6359fd7 RZ |
61 | #define __HAVE_ARCH_STRNCPY |
62 | static inline char *strncpy(char *dest, const char *src, size_t n) | |
1da177e4 | 63 | { |
d6359fd7 RZ |
64 | char *xdest = dest; |
65 | ||
66 | asm volatile ("\n" | |
67 | " jra 2f\n" | |
68 | "1: move.b (%1),(%0)+\n" | |
69 | " jeq 2f\n" | |
70 | " addq.l #1,%1\n" | |
71 | "2: subq.l #1,%2\n" | |
72 | " jcc 1b\n" | |
73 | : "+a" (dest), "+a" (src), "+d" (n) | |
74 | : : "memory"); | |
75 | return xdest; | |
1da177e4 LT |
76 | } |
77 | ||
d6359fd7 RZ |
78 | #define __HAVE_ARCH_STRCAT |
79 | #define strcat(d, s) ({ \ | |
80 | char *__d = (d); \ | |
81 | strcpy(__d + strlen(__d), (s)); \ | |
82 | }) | |
1da177e4 | 83 | |
d6359fd7 RZ |
84 | #define __HAVE_ARCH_STRCHR |
85 | static inline char *strchr(const char *s, int c) | |
1da177e4 | 86 | { |
d6359fd7 RZ |
87 | char sc, ch = c; |
88 | ||
89 | for (; (sc = *s++) != ch; ) { | |
90 | if (!sc) | |
91 | return NULL; | |
92 | } | |
93 | return (char *)s - 1; | |
1da177e4 LT |
94 | } |
95 | ||
d6359fd7 RZ |
96 | #define __HAVE_ARCH_STRCMP |
97 | static inline int strcmp(const char *cs, const char *ct) | |
1da177e4 | 98 | { |
d6359fd7 RZ |
99 | char res; |
100 | ||
101 | asm ("\n" | |
102 | "1: move.b (%0)+,%2\n" /* get *cs */ | |
103 | " cmp.b (%1)+,%2\n" /* compare a byte */ | |
104 | " jne 2f\n" /* not equal, break out */ | |
105 | " tst.b %2\n" /* at end of cs? */ | |
106 | " jne 1b\n" /* no, keep going */ | |
107 | " jra 3f\n" /* strings are equal */ | |
108 | "2: sub.b -(%1),%2\n" /* *cs - *ct */ | |
109 | "3:" | |
110 | : "+a" (cs), "+a" (ct), "=d" (res)); | |
111 | return res; | |
1da177e4 LT |
112 | } |
113 | ||
114 | #define __HAVE_ARCH_MEMSET | |
072dffda RZ |
115 | extern void *memset(void *, int, __kernel_size_t); |
116 | #define memset(d, c, n) __builtin_memset(d, c, n) | |
1da177e4 LT |
117 | |
118 | #define __HAVE_ARCH_MEMCPY | |
072dffda RZ |
119 | extern void *memcpy(void *, const void *, __kernel_size_t); |
120 | #define memcpy(d, s, n) __builtin_memcpy(d, s, n) | |
1da177e4 LT |
121 | |
122 | #define __HAVE_ARCH_MEMMOVE | |
072dffda | 123 | extern void *memmove(void *, const void *, __kernel_size_t); |
1da177e4 LT |
124 | |
125 | #define __HAVE_ARCH_MEMCMP | |
072dffda RZ |
126 | extern int memcmp(const void *, const void *, __kernel_size_t); |
127 | #define memcmp(d, s, n) __builtin_memcmp(d, s, n) | |
1da177e4 | 128 | |
d6359fd7 RZ |
129 | #endif |
130 | ||
1da177e4 | 131 | #endif /* _M68K_STRING_H_ */ |