masm anon label1

abMacro MACRO
    mov     cx, 5
@@:
    add   ax,10
    cmp   ax, 30
    je    @F              ; Jump forward to next anonymous label (@@)

    loop  @B              ; Jump back to previous anonymous label (@@)
@@:
     nop
ENDM

stack SEGMENT PARA STACK
    db      ?
stack ENDS

data SEGMENT PARA PUBLIC
     db      ?
data ENDS

code SEGMENT PARA PUBLIC
     ASSUME ss: stack, ds: data, cs: code

_start:

     mov     ax, data
     mov     ds, ax

     abMacro

     abMacro

     mov     ah, 04ch
     mov     al, 1
     int     21h

code ENDS
     END _start