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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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