SYSEXIT = 1
EXIT_SUCCESS = 0
SYSWRITE = 4
STDOUT = 1

.text
msg: .ascii "Hello! \n"
msg_len = .-msg

.global _start
_start:
mov $SYSWRITE, %eax
mov $STDOUT, %ebx
mov $msg, %ecx
mov $msg_len, %edx
int $0x80

mov $SYSEXIT, %eax
mov $EXIT_SUCCESS, %ebx
int $0x80