ex2.asm

global _start

section .data
	msg db "Hello, world!", 0x0a
	len equ $ - msg

section .text
_start:
	mov eax, 4		; sys_write system call
	mov ebx, 1		; stdout file descriptor
	mov ecx, msg	; bytes to write
	mov edx, len	; number of bytes to write
	int 0x80		; perform system call
	mov eax, 1		; sys_exit system call
	mov ebx, 0		; exit status is 0
	int 0x80