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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _M68K_STRING_H_
#define _M68K_STRING_H_
#include <linux/types.h>
#include <linux/compiler.h>
#define __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char *s, size_t count)
{
const char *sc = s;
asm volatile ("\n"
"1: subq.l #1,%1\n"
" jcs 2f\n"
" tst.b (%0)+\n"
" jne 1b\n"
" subq.l #1,%0\n"
"2:"
: "+a" (sc), "+d" (count));
return sc - s;
}
#define __HAVE_ARCH_STRNCPY
static inline char *strncpy(char *dest, const char *src, size_t n)
{
char *xdest = dest;
asm volatile ("\n"
" jra 2f\n"
"1: move.b (%1),(%0)+\n"
" jeq 2f\n"
" addq.l #1,%1\n"
"2: subq.l #1,%2\n"
" jcc 1b\n"
: "+a" (dest), "+a" (src), "+d" (n)
: : "memory");
return xdest;
}
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *, const void *, __kernel_size_t);
extern int memcmp(const void *, const void *, __kernel_size_t);
#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
#define __HAVE_ARCH_MEMSET
extern void *memset(void *, int, __kernel_size_t);
#define memset(d, c, n) __builtin_memset(d, c, n)
#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *, const void *, __kernel_size_t);
#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
#endif /* _M68K_STRING_H_ */
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