1#ifndef _M68K_STRING_H_ 2#define _M68K_STRING_H_ 3 4#include <linux/types.h> 5#include <linux/compiler.h> 6 7static 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 16static 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 36static 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)) 57#else 58#define strcpy(d, s) __kernel_strcpy(d, s) 59#endif 60 61#define __HAVE_ARCH_STRNCPY 62static 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 84#define __HAVE_ARCH_STRCHR 85static inline char *strchr(const char *s, int c) 86{ 87 char sc, ch = c; 88 89 for (; (sc = *s++) != ch; ) { 90 if (!sc) 91 return NULL; 92 } 93 return (char *)s - 1; 94} 95 96#define __HAVE_ARCH_STRCMP 97static inline int strcmp(const char *cs, const char *ct) 98{ 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; 112} 113 114#define __HAVE_ARCH_MEMSET 115extern void *memset(void *, int, __kernel_size_t); 116#define memset(d, c, n) __builtin_memset(d, c, n) 117 118#define __HAVE_ARCH_MEMCPY 119extern void *memcpy(void *, const void *, __kernel_size_t); 120#define memcpy(d, s, n) __builtin_memcpy(d, s, n) 121 122#define __HAVE_ARCH_MEMMOVE 123extern void *memmove(void *, const void *, __kernel_size_t); 124 125#define __HAVE_ARCH_MEMCMP 126extern int memcmp(const void *, const void *, __kernel_size_t); 127#define memcmp(d, s, n) __builtin_memcmp(d, s, n) 128 129#endif 130 131#endif /* _M68K_STRING_H_ */ 132