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kernel add
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#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 ("
"
"1: subq.l #1,%1
"
" jcs 2f
"
" tst.b (%0)+
"
" jne 1b
"
" subq.l #1,%0
"
"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 ("
"
" jra 2f
"
"1: move.b (%1),(%0)+
"
" jeq 2f
"
" addq.l #1,%1
"
"2: subq.l #1,%2
"
" jcc 1b
"
: "+a" (dest), "+a" (src), "+d" (n)
: : "memory");
return xdest;
}
#ifndef CONFIG_COLDFIRE
#define __HAVE_ARCH_STRCMP
static inline int strcmp(const char *cs, const char *ct)
{
char res;
asm ("
"
"1: move.b (%0)+,%2
" /* get *cs */
" cmp.b (%1)+,%2
" /* compare a byte */
" jne 2f
" /* not equal, break out */
" tst.b %2
" /* at end of cs? */
" jne 1b
" /* no, keep going */
" jra 3f
" /* strings are equal */
"2: sub.b -(%1),%2
" /* *cs - *ct */
"3:"
: "+a" (cs), "+a" (ct), "=d" (res));
return res;
}
#endif /* CONFIG_COLDFIRE */
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(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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