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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_SH_STRING_H #define __ASM_SH_STRING_H #ifdef __KERNEL__ /* * Copyright (C) 1999 Niibe Yutaka * But consider these trivial functions to be public domain. */ #define __HAVE_ARCH_STRCPY static inline char *strcpy(char *__dest, const char *__src) { register char *__xdest = __dest; unsigned long __dummy; __asm__ __volatile__("1:\n\t" "mov.b @%1+, %2\n\t" "mov.b %2, @%0\n\t" "cmp/eq #0, %2\n\t" "bf/s 1b\n\t" " add #1, %0\n\t" : "=r" (__dest), "=r" (__src), "=&z" (__dummy) : "0" (__dest), "1" (__src) : "memory", "t"); return __xdest; } #define __HAVE_ARCH_STRNCPY static inline char *strncpy(char *__dest, const char *__src, size_t __n) { register char *__xdest = __dest; unsigned long __dummy; if (__n == 0) return __xdest; __asm__ __volatile__( "1:\n" "mov.b @%1+, %2\n\t" "mov.b %2, @%0\n\t" "cmp/eq #0, %2\n\t" "bt/s 2f\n\t" " cmp/eq %5,%1\n\t" "bf/s 1b\n\t" " add #1, %0\n" "2:" : "=r" (__dest), "=r" (__src), "=&z" (__dummy) : "0" (__dest), "1" (__src), "r" (__src+__n) : "memory", "t"); return __xdest; } #define __HAVE_ARCH_STRCMP static inline int strcmp(const char *__cs, const char *__ct) { register int __res; unsigned long __dummy; __asm__ __volatile__( "mov.b @%1+, %3\n" "1:\n\t" "mov.b @%0+, %2\n\t" "cmp/eq #0, %3\n\t" "bt 2f\n\t" "cmp/eq %2, %3\n\t" "bt/s 1b\n\t" " mov.b @%1+, %3\n\t" "add #-2, %1\n\t" "mov.b @%1, %3\n\t" "sub %3, %2\n" "2:" : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) : "0" (__cs), "1" (__ct) : "t"); return __res; } #define __HAVE_ARCH_STRNCMP static inline int strncmp(const char *__cs, const char *__ct, size_t __n) { register int __res; unsigned long __dummy; if (__n == 0) return 0; __asm__ __volatile__( "mov.b @%1+, %3\n" "1:\n\t" "mov.b @%0+, %2\n\t" "cmp/eq %6, %0\n\t" "bt/s 2f\n\t" " cmp/eq #0, %3\n\t" "bt/s 3f\n\t" " cmp/eq %3, %2\n\t" "bt/s 1b\n\t" " mov.b @%1+, %3\n\t" "add #-2, %1\n\t" "mov.b @%1, %3\n" "2:\n\t" "sub %3, %2\n" "3:" :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy) : "0" (__cs), "1" (__ct), "r" (__cs+__n) : "t"); return __res; } #define __HAVE_ARCH_MEMSET extern void *memset(void *__s, int __c, size_t __count); #define __HAVE_ARCH_MEMCPY extern void *memcpy(void *__to, __const__ void *__from, size_t __n); #define __HAVE_ARCH_MEMMOVE extern void *memmove(void *__dest, __const__ void *__src, size_t __n); #define __HAVE_ARCH_MEMCHR extern void *memchr(const void *__s, int __c, size_t __n); #define __HAVE_ARCH_STRLEN extern size_t strlen(const char *); #endif /* __KERNEL__ */ #endif /* __ASM_SH_STRING_H */
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