高级汇编语言技术

  OPR1,OPR2,RESULT
          PUSH     DX
          PUSH     AX
          DIF       OPR1,OPR2
          IMUL     AX
          MOV       RESULT,AX
          POP       AX
          POP       DX
          ENDM
宏调用:
         DIFSQR      VAR1,VAR2,VAR3
9.宏定义体内不仅可以使用宏调用,也可以包含宏定义.
宏定义:
   DEFMAC     MACRO       MACNAM,OPERATOR
              MACNAM      MACRO        X,Y,Z
                         PUSH         AX
                         MOV          AX,X
                         OPERATOR     AX,Y
                         MOV          Z,AX
                         POP          AX
                         ENDM
               ENDM
其中MACNAM是内层的宏定义名,但又是外层宏定义的哑元,所以调用DEFMAC时,就形成一个宏定义.
宏调用:
        DEFMAC    ADDITION,ADD
宏展开:
    +     ADDITION     MACRO     X,Y,Z
                       PUSH      AX
                       MOV       AX,X