void main() 
{
    __asm__("
             jmp forward    # abc
backward:
             popl   %esi
             movl   $4, %eax
             movl   $2, %ebx
             movl   %esi, %ecx
             movl   $12, %edx
             int    $0x80
             int3
forward:
             call   backward
             .string \"Hello World\\n\""
           );
}