| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_SH_STRING_H |
| 3 | #define __ASM_SH_STRING_H |
| 4 | |
| 5 | #ifdef __KERNEL__ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 1999 Niibe Yutaka |
| 9 | * But consider these trivial functions to be public domain. |
| 10 | */ |
| 11 | |
| 12 | #define __HAVE_ARCH_STRCPY |
| 13 | static inline char *strcpy(char *__dest, const char *__src) |
| 14 | { |
| 15 | register char *__xdest = __dest; |
| 16 | unsigned long __dummy; |
| 17 | |
| 18 | __asm__ __volatile__("1:\n\t" |
| 19 | "mov.b @%1+, %2\n\t" |
| 20 | "mov.b %2, @%0\n\t" |
| 21 | "cmp/eq #0, %2\n\t" |
| 22 | "bf/s 1b\n\t" |
| 23 | " add #1, %0\n\t" |
| 24 | : "=r" (__dest), "=r" (__src), "=&z" (__dummy) |
| 25 | : "0" (__dest), "1" (__src) |
| 26 | : "memory", "t"); |
| 27 | |
| 28 | return __xdest; |
| 29 | } |
| 30 | |
| 31 | #define __HAVE_ARCH_STRNCPY |
| 32 | static inline char *strncpy(char *__dest, const char *__src, size_t __n) |
| 33 | { |
| 34 | register char *__xdest = __dest; |
| 35 | unsigned long __dummy; |
| 36 | |
| 37 | if (__n == 0) |
| 38 | return __xdest; |
| 39 | |
| 40 | __asm__ __volatile__( |
| 41 | "1:\n" |
| 42 | "mov.b @%1+, %2\n\t" |
| 43 | "mov.b %2, @%0\n\t" |
| 44 | "cmp/eq #0, %2\n\t" |
| 45 | "bt/s 2f\n\t" |
| 46 | " cmp/eq %5,%1\n\t" |
| 47 | "bf/s 1b\n\t" |
| 48 | " add #1, %0\n" |
| 49 | "2:" |
| 50 | : "=r" (__dest), "=r" (__src), "=&z" (__dummy) |
| 51 | : "0" (__dest), "1" (__src), "r" (__src+__n) |
| 52 | : "memory", "t"); |
| 53 | |
| 54 | return __xdest; |
| 55 | } |
| 56 | |
| 57 | #define __HAVE_ARCH_STRCMP |
| 58 | static inline int strcmp(const char *__cs, const char *__ct) |
| 59 | { |
| 60 | register int __res; |
| 61 | unsigned long __dummy; |
| 62 | |
| 63 | __asm__ __volatile__( |
| 64 | "mov.b @%1+, %3\n" |
| 65 | "1:\n\t" |
| 66 | "mov.b @%0+, %2\n\t" |
| 67 | "cmp/eq #0, %3\n\t" |
| 68 | "bt 2f\n\t" |
| 69 | "cmp/eq %2, %3\n\t" |
| 70 | "bt/s 1b\n\t" |
| 71 | " mov.b @%1+, %3\n\t" |
| 72 | "add #-2, %1\n\t" |
| 73 | "mov.b @%1, %3\n\t" |
| 74 | "sub %3, %2\n" |
| 75 | "2:" |
| 76 | : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) |
| 77 | : "0" (__cs), "1" (__ct) |
| 78 | : "t"); |
| 79 | |
| 80 | return __res; |
| 81 | } |
| 82 | |
| 83 | #define __HAVE_ARCH_STRNCMP |
| 84 | static inline int strncmp(const char *__cs, const char *__ct, size_t __n) |
| 85 | { |
| 86 | register int __res; |
| 87 | unsigned long __dummy; |
| 88 | |
| 89 | if (__n == 0) |
| 90 | return 0; |
| 91 | |
| 92 | __asm__ __volatile__( |
| 93 | "mov.b @%1+, %3\n" |
| 94 | "1:\n\t" |
| 95 | "mov.b @%0+, %2\n\t" |
| 96 | "cmp/eq %6, %0\n\t" |
| 97 | "bt/s 2f\n\t" |
| 98 | " cmp/eq #0, %3\n\t" |
| 99 | "bt/s 3f\n\t" |
| 100 | " cmp/eq %3, %2\n\t" |
| 101 | "bt/s 1b\n\t" |
| 102 | " mov.b @%1+, %3\n\t" |
| 103 | "add #-2, %1\n\t" |
| 104 | "mov.b @%1, %3\n" |
| 105 | "2:\n\t" |
| 106 | "sub %3, %2\n" |
| 107 | "3:" |
| 108 | :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) |
| 109 | : "0" (__cs), "1" (__ct), "r" (__cs+__n) |
| 110 | : "t"); |
| 111 | |
| 112 | return __res; |
| 113 | } |
| 114 | |
| 115 | #define __HAVE_ARCH_MEMSET |
| 116 | extern void *memset(void *__s, int __c, size_t __count); |
| 117 | |
| 118 | #define __HAVE_ARCH_MEMCPY |
| 119 | extern void *memcpy(void *__to, __const__ void *__from, size_t __n); |
| 120 | |
| 121 | #define __HAVE_ARCH_MEMMOVE |
| 122 | extern void *memmove(void *__dest, __const__ void *__src, size_t __n); |
| 123 | |
| 124 | #define __HAVE_ARCH_MEMCHR |
| 125 | extern void *memchr(const void *__s, int __c, size_t __n); |
| 126 | |
| 127 | #define __HAVE_ARCH_STRLEN |
| 128 | extern size_t strlen(const char *); |
| 129 | |
| 130 | #endif /* __KERNEL__ */ |
| 131 | |
| 132 | #endif /* __ASM_SH_STRING_H */ |