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#include <u.h>
#include <libc.h>
void*
memmove(void *a1, void *a2, ulong n)
{
char *s1, *s2;
if((long)n < 0)
abort();
s1 = a1;
s2 = a2;
if((s2 < s1) && (s2+n > s1))
goto back;
while(n > 0) {
*s1++ = *s2++;
n--;
}
return a1;
back:
s1 += n;
s2 += n;
while(n > 0) {
*--s1 = *--s2;
n--;
}
return a1;
}
void*
memcpy(void *a1, void *a2, ulong n)
{
return memmove(a1, a2, n);
}
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