exit.S

.section .data

.section .text
.globl _start
_start:
movl $1, %eax      # this is the linux kernel command
                # number (system call) for exiting
                # a program

movl $0, %ebx      # this is the status number we will
                # return to the operating system.
                # Change this around and it will
                # return different things to
                # echo $?

int $0x80          # this wakes up the kernel to run
                # the exit command