63 lines
1.0 KiB
C
63 lines
1.0 KiB
C
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
void * memcpy(void * to, const void * from, size_t n)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_COLDFIRE
|
||
|
|
void *xto = to;
|
||
|
|
size_t temp;
|
||
|
|
|
||
|
|
if (!n)
|
||
|
|
return xto;
|
||
|
|
if ((long) to & 1)
|
||
|
|
{
|
||
|
|
char *cto = to;
|
||
|
|
const char *cfrom = from;
|
||
|
|
*cto++ = *cfrom++;
|
||
|
|
to = cto;
|
||
|
|
from = cfrom;
|
||
|
|
n--;
|
||
|
|
}
|
||
|
|
if (n > 2 && (long) to & 2)
|
||
|
|
{
|
||
|
|
short *sto = to;
|
||
|
|
const short *sfrom = from;
|
||
|
|
*sto++ = *sfrom++;
|
||
|
|
to = sto;
|
||
|
|
from = sfrom;
|
||
|
|
n -= 2;
|
||
|
|
}
|
||
|
|
temp = n >> 2;
|
||
|
|
if (temp)
|
||
|
|
{
|
||
|
|
long *lto = to;
|
||
|
|
const long *lfrom = from;
|
||
|
|
for (; temp; temp--)
|
||
|
|
*lto++ = *lfrom++;
|
||
|
|
to = lto;
|
||
|
|
from = lfrom;
|
||
|
|
}
|
||
|
|
if (n & 2)
|
||
|
|
{
|
||
|
|
short *sto = to;
|
||
|
|
const short *sfrom = from;
|
||
|
|
*sto++ = *sfrom++;
|
||
|
|
to = sto;
|
||
|
|
from = sfrom;
|
||
|
|
}
|
||
|
|
if (n & 1)
|
||
|
|
{
|
||
|
|
char *cto = to;
|
||
|
|
const char *cfrom = from;
|
||
|
|
*cto = *cfrom;
|
||
|
|
}
|
||
|
|
return xto;
|
||
|
|
#else
|
||
|
|
const char *c_from = from;
|
||
|
|
char *c_to = to;
|
||
|
|
while (n-- > 0)
|
||
|
|
*c_to++ = *c_from++;
|
||
|
|
return((void *) to);
|
||
|
|
#endif
|
||
|
|
}
|