Thumbs Up!

@ Hello Fibonacci — prints the first 15 numbers
@ SWI 1 = putc(r0), SWI 2 = print int, SWI 3 = puts, SWI 0 = exit
        ldr r0, =msg
        swi 3
        mov r4, #0          @ a
        mov r5, #1          @ b
        mov r6, #15         @ counter
loop:   mov r0, r4
        swi 2
        mov r0, #32         @ space
        swi 1
        add r7, r4, r5
        mov r4, r5
        mov r5, r7
        subs r6, r6, #1
        bne loop
        swi 0
msg:    .asciz "Fibonacci says hi: "