Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 1 | #ifndef _M68K_STRING_H_ |
| 2 | #define _M68K_STRING_H_ |
| 3 | |
| 4 | #include <linux/types.h> |
| 5 | #include <linux/compiler.h> |
| 6 | |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 7 | #define __HAVE_ARCH_STRNLEN |
| 8 | static inline size_t strnlen(const char *s, size_t count) |
| 9 | { |
| 10 | const char *sc = s; |
| 11 | |
| 12 | asm volatile ("\n" |
| 13 | "1: subq.l #1,%1\n" |
| 14 | " jcs 2f\n" |
| 15 | " tst.b (%0)+\n" |
| 16 | " jne 1b\n" |
| 17 | " subq.l #1,%0\n" |
| 18 | "2:" |
| 19 | : "+a" (sc), "+d" (count)); |
| 20 | return sc - s; |
| 21 | } |
| 22 | |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 23 | #define __HAVE_ARCH_STRNCPY |
| 24 | static inline char *strncpy(char *dest, const char *src, size_t n) |
| 25 | { |
| 26 | char *xdest = dest; |
| 27 | |
| 28 | asm volatile ("\n" |
| 29 | " jra 2f\n" |
| 30 | "1: move.b (%1),(%0)+\n" |
| 31 | " jeq 2f\n" |
| 32 | " addq.l #1,%1\n" |
| 33 | "2: subq.l #1,%2\n" |
| 34 | " jcc 1b\n" |
| 35 | : "+a" (dest), "+a" (src), "+d" (n) |
| 36 | : : "memory"); |
| 37 | return xdest; |
| 38 | } |
| 39 | |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 40 | #ifndef CONFIG_COLDFIRE |
| 41 | #define __HAVE_ARCH_STRCMP |
| 42 | static inline int strcmp(const char *cs, const char *ct) |
| 43 | { |
| 44 | char res; |
| 45 | |
| 46 | asm ("\n" |
| 47 | "1: move.b (%0)+,%2\n" /* get *cs */ |
| 48 | " cmp.b (%1)+,%2\n" /* compare a byte */ |
| 49 | " jne 2f\n" /* not equal, break out */ |
| 50 | " tst.b %2\n" /* at end of cs? */ |
| 51 | " jne 1b\n" /* no, keep going */ |
| 52 | " jra 3f\n" /* strings are equal */ |
| 53 | "2: sub.b -(%1),%2\n" /* *cs - *ct */ |
| 54 | "3:" |
| 55 | : "+a" (cs), "+a" (ct), "=d" (res)); |
| 56 | return res; |
| 57 | } |
Greg Ungerer | 982cd25 | 2011-02-03 21:58:39 +1000 | [diff] [blame] | 58 | #endif /* CONFIG_COLDFIRE */ |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 59 | |
| 60 | #define __HAVE_ARCH_MEMMOVE |
| 61 | extern void *memmove(void *, const void *, __kernel_size_t); |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 62 | |
Greg Ungerer | f9d693d | 2011-02-03 21:31:20 +1000 | [diff] [blame] | 63 | #define memcmp(d, s, n) __builtin_memcmp(d, s, n) |
| 64 | |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 65 | #define __HAVE_ARCH_MEMSET |
| 66 | extern void *memset(void *, int, __kernel_size_t); |
| 67 | #define memset(d, c, n) __builtin_memset(d, c, n) |
| 68 | |
| 69 | #define __HAVE_ARCH_MEMCPY |
| 70 | extern void *memcpy(void *, const void *, __kernel_size_t); |
| 71 | #define memcpy(d, s, n) __builtin_memcpy(d, s, n) |
| 72 | |
Greg Ungerer | ea61bc4 | 2010-09-07 14:52:52 +1000 | [diff] [blame] | 73 | #endif /* _M68K_STRING_H_ */ |