goto.asm

section .data
fmt: db "%d", 0
one: dd 1
zero: dd 0

section .bss
x: resd 1

section .text
extern _scanf
extern _printf
global _lab1
global _lab2
global _lab3
global _main

_main:
push x
push fmt
call _scanf
add esp, 8
mov eax, [x]
cmp eax, [zero]
jg _lab1
mov eax, [zero]
jmp _lab2

_lab1: mov eax, [one]
_lab2: mov [x], eax

push dword [x]
push fmt
call _printf
add esp, 8
xor eax, eax
xor ecx, ecx
ret