code: def memory_read64(self, addr, num_long_words):
          
          buf_size = num_long_words
          buf = (ctypes.c_ulonglong * buf_size)()
          units_read = self._dll.JLINKARM_ReadMemU64(addr, buf_size, buf, 0)
          if units_read < 0:
              raise errors.JLinkException(units_read)
  
          return buf[:units_read]
docs: Reads memory from the target system in units of 64-bits.
  
          Args:
            self (JLink): the ``JLink`` instance
            addr (int): start address to read from
            num_long_words (int): number of long words to read
  
          Returns:
            List of long words read from the target system.
  
          Raises:
            JLinkException: if memory could not be read