.text
.globl _start

start = 0
end = 31

_start:
    mov	x4, start		    /* Init iterator to 0 */
loop:
    mov     x11, 10         /* Store the value 10 in register to parse 2 digit numbers */
    udiv    x9, x4, x11     /* divide x4 by x11, put quotient into x9 */
    msub    x10, x11, x9, x4/* load x10 with x4-(x11*x9), the remainder of iter % 10 */

    add     x12, x9, 0x30   /* convert iter (10s place) to ascii and store in register */
    add     x13, x10, 0x30  /* convert iter (1s place) to ascii and store in register */

    cmp     x9, 0           /* Check to see if 10s place is 0 */
    adr     x1, msg         /* store message location (memory address) in register */
    b.eq    print           /* if it is equal, skip adding 10s digit */
    str     x12, [x1, 7]    /* Store the iterator (10s place) ascii into the ...*/
                            /* ... address of string + 7 bytes*/

print:
    mov     x0, 1           /* file descriptor: 1 is stdout */
    str     x13, [x1, 8]    /* Store the iterator (1s place) ascii into the ...*/
                            /* ... address of string + 8 bytes*/
    mov     x2, len         /* message length (bytes) */

    mov     x8, 64          /* write is syscall #64 */
    svc     0               /* invoke syscall */

    add     x4, x4, 1       /* increment the iterator  */
    cmp     x4, end         /* check to see if the iterator equals to end */
    b.ne    loop            /* if iterator not equal to end, go back to loop label  */

    mov     x0, 0     	    /* status -> 0 */
    mov     x8, 93    	    /* exit is syscall #93 */
    svc     0              	/* invoke syscall */

.data
msg:	.ascii	"\nLoop:   "
len=	. - msg