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