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ea61bc46 GU |
1 | #ifndef _M68K_STRING_H_ |
2 | #define _M68K_STRING_H_ | |
3 | ||
4 | #include <linux/types.h> | |
5 | #include <linux/compiler.h> | |
6 | ||
7 | static inline size_t __kernel_strlen(const char *s) | |
8 | { | |
9 | const char *sc; | |
10 | ||
11 | for (sc = s; *sc++; ) | |
12 | ; | |
13 | return sc - s - 1; | |
14 | } | |
15 | ||
16 | static inline char *__kernel_strcpy(char *dest, const char *src) | |
17 | { | |
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; | |
26 | } | |
27 | ||
28 | #ifndef __IN_STRING_C | |
29 | ||
30 | #define __HAVE_ARCH_STRLEN | |
31 | #define strlen(s) (__builtin_constant_p(s) ? \ | |
32 | __builtin_strlen(s) : \ | |
33 | __kernel_strlen(s)) | |
34 | ||
35 | #define __HAVE_ARCH_STRNLEN | |
36 | static inline size_t strnlen(const char *s, size_t count) | |
37 | { | |
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; | |
49 | } | |
50 | ||
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)) | |
49148020 | 57 | #else |
ea61bc46 | 58 | #define strcpy(d, s) __kernel_strcpy(d, s) |
49148020 | 59 | #endif |
ea61bc46 GU |
60 | |
61 | #define __HAVE_ARCH_STRNCPY | |
62 | static inline char *strncpy(char *dest, const char *src, size_t n) | |
63 | { | |
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; | |
76 | } | |
77 | ||
78 | #define __HAVE_ARCH_STRCAT | |
79 | #define strcat(d, s) ({ \ | |
80 | char *__d = (d); \ | |
81 | strcpy(__d + strlen(__d), (s)); \ | |
82 | }) | |
83 | ||
ea61bc46 GU |
84 | #ifndef CONFIG_COLDFIRE |
85 | #define __HAVE_ARCH_STRCMP | |
86 | static inline int strcmp(const char *cs, const char *ct) | |
87 | { | |
88 | char res; | |
89 | ||
90 | asm ("\n" | |
91 | "1: move.b (%0)+,%2\n" /* get *cs */ | |
92 | " cmp.b (%1)+,%2\n" /* compare a byte */ | |
93 | " jne 2f\n" /* not equal, break out */ | |
94 | " tst.b %2\n" /* at end of cs? */ | |
95 | " jne 1b\n" /* no, keep going */ | |
96 | " jra 3f\n" /* strings are equal */ | |
97 | "2: sub.b -(%1),%2\n" /* *cs - *ct */ | |
98 | "3:" | |
99 | : "+a" (cs), "+a" (ct), "=d" (res)); | |
100 | return res; | |
101 | } | |
982cd252 | 102 | #endif /* CONFIG_COLDFIRE */ |
ea61bc46 GU |
103 | |
104 | #define __HAVE_ARCH_MEMMOVE | |
105 | extern void *memmove(void *, const void *, __kernel_size_t); | |
106 | ||
ea61bc46 | 107 | #define memcmp(d, s, n) __builtin_memcmp(d, s, n) |
ea61bc46 GU |
108 | |
109 | #define __HAVE_ARCH_MEMSET | |
110 | extern void *memset(void *, int, __kernel_size_t); | |
111 | #define memset(d, c, n) __builtin_memset(d, c, n) | |
112 | ||
113 | #define __HAVE_ARCH_MEMCPY | |
114 | extern void *memcpy(void *, const void *, __kernel_size_t); | |
115 | #define memcpy(d, s, n) __builtin_memcpy(d, s, n) | |
116 | ||
117 | #endif | |
118 | ||
119 | #endif /* _M68K_STRING_H_ */ |