ARM, RISC-V контроллеры

void * memcpy4(void *dest, const void *src, size_t len)
{
  int *d4 = dest;
  const int *s4 = src;
  for (size_t count4 = len/4; count4; count4--) 
    *d4++ = *s4++;

  char *d = (char *)d4;
  const char *s = (const char *)s4;
  for (size_t count = len%4; count; count--) 
    *d++ = *s++;

  return dest;
}