mov r7, pc
mov r0, r0

mov r0, #0
mov r1, #1
mov r2, #0
mov lr, pc
bx r8

mov r0, #100
mov lr, pc
bx r9

mov r0, #0
mov r1, #1
mov r2, #1
mov lr, pc
bx r8

mov r0, #100
mov lr, pc
bx r9

bx r7