Rotate memory left

def instruction_ROL_memory(self, opcode, ea, m):
        """ Rotate memory left """
        r = self.ROL(m)
#        log.debug("$%x ROL memory value $%x << 1 | Carry = $%x and write it to $%x \t| %s" % (
#            self.program_counter,
#            m, r, ea,
#            self.cfg.mem_info.get_shortest(ea)
#        ))
        return ea, r & 0xff