#ifndef _M68K_STRING_H_ #define _M68K_STRING_H_ #include <linux/types.h> #include <linux/compiler.h> static inline size_t __kernel_strlen(const char *s) { const char *sc; for (sc = s; *sc++; ) ; return sc - s - 1; } static inline char *__kernel_strcpy(char *dest, const char *src) { char *xdest = dest; asm volatile ("\n" "1: move.b (%1)+,(%0)+\n" " jne 1b" : "+a" (dest), "+a" (src) : : "memory"); return xdest; } #ifndef __IN_STRING_C #define __HAVE_ARCH_STRLEN #define strlen(s) (__builtin_constant_p(s) ? \ __builtin_strlen(s) : \ __kernel_strlen(s)) #define __HAVE_ARCH_STRNLEN static inline size_t strnlen(const char *s, size_t count) { const char *sc = s; asm volatile ("\n" "1: subq.l #1,%1\n" " jcs 2f\n" " tst.b (%0)+\n" " jne 1b\n" " subq.l #1,%0\n" "2:" : "+a" (sc), "+d" (count)); return sc - s; } #define __HAVE_ARCH_STRCPY #if __GNUC__ >= 4 #define strcpy(d, s) (__builtin_constant_p(s) && \ __builtin_strlen(s) <= 32 ? \ __builtin_strcpy(d, s) : \ __kernel_strcpy(d, s)) #else #define strcpy(d, s) __kernel_strcpy(d, s) #endif #define __HAVE_ARCH_STRNCPY static inline char *strncpy(char *dest, const char *src, size_t n) { char *xdest = dest; asm volatile ("\n" " jra 2f\n" "1: move.b (%1),(%0)+\n" " jeq 2f\n" " addq.l #1,%1\n" "2: subq.l #1,%2\n" " jcc 1b\n" : "+a" (dest), "+a" (src), "+d" (n) : : "memory"); return xdest; } #define __HAVE_ARCH_STRCAT #define strcat(d, s) ({ \ char *__d = (d); \ strcpy(__d + strlen(__d), (s)); \ }) #define __HAVE_ARCH_STRCHR static inline char *strchr(const char *s, int c) { char sc, ch = c; for (; (sc = *s++) != ch; ) { if (!sc) return NULL; } return (char *)s - 1; } #define __HAVE_ARCH_STRCMP static inline int strcmp(const char *cs, const char *ct) { char res; asm ("\n" "1: move.b (%0)+,%2\n" /* get *cs */ " cmp.b (%1)+,%2\n" /* compare a byte */ " jne 2f\n" /* not equal, break out */ " tst.b %2\n" /* at end of cs? */ " jne 1b\n" /* no, keep going */ " jra 3f\n" /* strings are equal */ "2: sub.b -(%1),%2\n" /* *cs - *ct */ "3:" : "+a" (cs), "+a" (ct), "=d" (res)); return res; } #define __HAVE_ARCH_MEMSET extern void *memset(void *, int, __kernel_size_t); #define memset(d, c, n) __builtin_memset(d, c, n) #define __HAVE_ARCH_MEMCPY extern void *memcpy(void *, const void *, __kernel_size_t); #define memcpy(d, s, n) __builtin_memcpy(d, s, n) #define __HAVE_ARCH_MEMMOVE extern void *memmove(void *, const void *, __kernel_size_t); #define __HAVE_ARCH_MEMCMP extern int memcmp(const void *, const void *, __kernel_size_t); #define memcmp(d, s, n) __builtin_memcmp(d, s, n) #endif #endif /* _M68K_STRING_H_ */