test/bintest.asm

   1 ;Testname=unoptimized; Arguments=-O0 -fbin -obintest.bin; Files=.stdout .stderr bintest.bin
   2 ;Testname=optimized;   Arguments=-Ox -fbin -obintest.bin; Files=.stdout .stderr bintest.bin
   3
   4 ; test source file for assembling to binary files
   5 ; build with:
   6 ;    nasm -f bin -o bintest.com bintest.asm
   7
   8 ; When run (as a DOS .COM file), this program should print
   9 ;    hello, world
  10 ; on two successive lines, then exit cleanly.
  11
  12 ; This file should test the following:
  13 ; [1] Define a text-section symbol
  14 ; [2] Define a data-section symbol
  15 ; [3] Define a BSS-section symbol
  16 ; [4] Define a NASM local label
  17 ; [5] Reference a NASM local label
  18 ; [6] Reference a text-section symbol in the text section
  19 ; [7] Reference a data-section symbol in the text section
  20 ; [8] Reference a BSS-section symbol in the text section
  21 ; [9] Reference a text-section symbol in the data section
  22 ; [10] Reference a data-section symbol in the data section
  23 ; [11] Reference a BSS-section symbol in the data section
  24
  25           BITS 16
  26           ORG 0x100
  27
  28           SECTION .text
  29
  30           jmp start             ; [6]
  31
  32 endX      mov ax,0x4c00         ; [1]
  33           int 0x21
  34
  35 start     mov byte [bss_sym],',' ; [1] [8]
  36           mov bx,[bssptr]       ; [7]
  37           mov al,[bx]
  38           mov bx,[dataptr]      ; [7]
  39           mov [bx],al
  40           mov cx,2
  41 .loop     mov dx,datasym        ; [1] [4] [7]
  42           mov ah,9
  43           push cx
  44           int 0x21
  45           pop cx
  46           loop .loop            ; [5] [6]
  47           mov bx,[textptr]      ; [7]
  48           jmp bx
  49
  50           SECTION .data
  51
  52 datasym   db 'hello  world', 13, 10, '$' ; [2]
  53 bssptr    dw bss_sym            ; [2] [11]
  54 dataptr   dw datasym+5          ; [2] [10]
  55 textptr   dw endX               ; [2] [9]
  56
  57           SECTION .bss
  58
  59 bss_sym   resb 1                ; [3]