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