本程序用于计算多项式的值，输入x和y的值，而后按照计算优先级次序，依次将所得的值存入dx寄存器，计算完成之后即可输出。-This procedure used to calculate the value of the polynomial, input x and y values, and then according to the calculation priority order, in turn, will be the value in dx register, after the completion of calculation can be output.