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  1. global _start
  2.  
  3. ; The data section is used for declaring initialized data or constants. 
  4. ; This data does not change at runtime. 
  5. ; You can declare various constant values, file names or buffer size etc. in this section.
  6. section .data
  7. 	msg 		db 'Hello World!', 0xa			; Hello World message.
  8. 	msglen 		equ $ - msg						; length of the Hello World message.
  9. 	mydate 		dw "06-Jan-2024 07:55 AM", 0xa	; Today's Date.
  10. 	mydatelen	equ $ - mydate					; Length of mydate variable.
  11.  
  12. ; The bss section is used for declaring variables.
  13. section .bss
  14.  
  15.  
  16. ; The text section is used for keeping the actual code. 
  17. ; This section must begin with the declarationglobal main, 
  18. ; which tells the kernel where the program execution begins.
  19. section .text
  20.  
  21. _start:
  22. 	; Print message "Hello World".
  23. 	mov		edx, msglen		; message length
  24. 	mov		ecx, msg		; message to write
  25. 	mov 	ebx, 01h		; file descriptor (stdout)
  26. 	mov 	eax, 04h		; system call number (sys_write)
  27. 	int 	0x80			; call kernel
  28.  
  29. 	; Print current system date.
  30. 	mov		edx, mydatelen	; message length
  31. 	mov		ecx, mydate		; message to write
  32. 	mov 	ebx, 01h		; file descriptor (stdout)
  33. 	mov 	eax, 04h		; system call number (sys_write)
  34. 	int 	0x80			; call kernel
  35.  
  36. 	jmp		exit
  37.  
  38. exit:
  39. 	mov		eax, 01h		; exit()
  40. 	xor		ebx, ebx		; errno
  41. 	int		80h
  42.  
Success #stdin #stdout 0s 5288KB
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stdin
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Standard input is empty
stdout
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Hello World!
06-Jan-2024 07:55 AM
https://ideone.com/kcLtsh
language:
Assembler 32bit (nasm 2.14)
created:
11 days ago
visibility:
public

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