projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| ea61bc46 GU |
2 | #ifndef _M68K_STRING_H_ |
| 3 | #define _M68K_STRING_H_ | |
| 4 | ||
| 5 | #include <linux/types.h> | |
| 6 | #include <linux/compiler.h> | |
| 7 | ||
| ea61bc46 GU |
8 | #define __HAVE_ARCH_STRNLEN |
| 9 | static inline size_t strnlen(const char *s, size_t count) | |
| 10 | { | |
| 11 | const char *sc = s; | |
| 12 | ||
| 13 | asm volatile ("\n" | |
| 14 | "1: subq.l #1,%1\n" | |
| 15 | " jcs 2f\n" | |
| 16 | " tst.b (%0)+\n" | |
| 17 | " jne 1b\n" | |
| 18 | " subq.l #1,%0\n" | |
| 19 | "2:" | |
| 20 | : "+a" (sc), "+d" (count)); | |
| 21 | return sc - s; | |
| 22 | } | |
| 23 | ||
| ea61bc46 GU |
24 | #define __HAVE_ARCH_STRNCPY |
| 25 | static inline char *strncpy(char *dest, const char *src, size_t n) | |
| 26 | { | |
| 27 | char *xdest = dest; | |
| 28 | ||
| 29 | asm volatile ("\n" | |
| 30 | " jra 2f\n" | |
| 31 | "1: move.b (%1),(%0)+\n" | |
| 32 | " jeq 2f\n" | |
| 33 | " addq.l #1,%1\n" | |
| 34 | "2: subq.l #1,%2\n" | |
| 35 | " jcc 1b\n" | |
| 36 | : "+a" (dest), "+a" (src), "+d" (n) | |
| 37 | : : "memory"); | |
| 38 | return xdest; | |
| 39 | } | |
| 40 | ||
| ea61bc46 GU |
41 | #ifndef CONFIG_COLDFIRE |
| 42 | #define __HAVE_ARCH_STRCMP | |
| 43 | static inline int strcmp(const char *cs, const char *ct) | |
| 44 | { | |
| 45 | char res; | |
| 46 | ||
| 47 | asm ("\n" | |
| 48 | "1: move.b (%0)+,%2\n" /* get *cs */ | |
| 49 | " cmp.b (%1)+,%2\n" /* compare a byte */ | |
| 50 | " jne 2f\n" /* not equal, break out */ | |
| 51 | " tst.b %2\n" /* at end of cs? */ | |
| 52 | " jne 1b\n" /* no, keep going */ | |
| 53 | " jra 3f\n" /* strings are equal */ | |
| 54 | "2: sub.b -(%1),%2\n" /* *cs - *ct */ | |
| 55 | "3:" | |
| 56 | : "+a" (cs), "+a" (ct), "=d" (res)); | |
| 57 | return res; | |
| 58 | } | |
| 982cd252 | 59 | #endif /* CONFIG_COLDFIRE */ |
| ea61bc46 GU |
60 | |
| 61 | #define __HAVE_ARCH_MEMMOVE | |
| 62 | extern void *memmove(void *, const void *, __kernel_size_t); | |
| 63 | ||
| ea61bc46 | 64 | #define memcmp(d, s, n) __builtin_memcmp(d, s, n) |
| ea61bc46 GU |
65 | |
| 66 | #define __HAVE_ARCH_MEMSET | |
| 67 | extern void *memset(void *, int, __kernel_size_t); | |
| 68 | #define memset(d, c, n) __builtin_memset(d, c, n) | |
| 69 | ||
| 70 | #define __HAVE_ARCH_MEMCPY | |
| 71 | extern void *memcpy(void *, const void *, __kernel_size_t); | |
| 72 | #define memcpy(d, s, n) __builtin_memcpy(d, s, n) | |
| 73 | ||
| ea61bc46 | 74 | #endif /* _M68K_STRING_H_ */ |