test/elif.asm

   1 %macro DosPrintMsg 1+
   2 %ifnid %1
   3 section .data
   4 %%str_to_print:db %1
   5 section .text
   6  mov dx,%%str_to_print
   7  mov ah,9
   8  int 0x21
   9 %else
  10  mov dx,(%1)
  11  mov ah,9
  12  int 0x21
  13 %endif
  14 %endmacro
  15
  16 %macro DosExit 1
  17 %if (%1) == 0
  18 ;use short-form return 0 exit
  19  int 0x20
  20 %elif ((%1) < 256) && ((%1) > 0)
  21  mov ax,0x4C00 | (%1)
  22  int 0x21
  23 %else
  24 %error Invalid return value
  25 %endif
  26 %endmacro
  27
  28 org 0x100
  29  DosPrintMsg predefined_str
  30  DosPrintMsg "Using string with macro-defined label",10,0
  31  DosExit 0
  32  DosExit 1
  33  DosExit 256
  34
  35 section .data
  36 predefined_str:db "Using string with predefined label",10,0