SYSEXIT = 1
SYSWRITE = 4
STDOUT = 1

.global _start

.data
str: .ascii "Hello world!\n"
str_len = . - str

.text
_start:
mov r7, #SYSWRITE
mov r0, #STDOUT
ldr r1, =str
mov r2, #str_len
swi 0x0

mov r7, #SYSEXIT
mov r0, #0
swi 0x0