.cpu cortex-m4
	.thumb
	.syntax unified
	.globl multiply
	.text
	.thumb_func
multiply:
	MOVS.N	R2, #0
	ADDS.N	R1, #0
	BEQ.N	=exit
loop:
	ADDS.N	R2, R0, R2
	SUBS.N	R1, #1
	BNE.N	=exit
	B.N		=loop
exit:
	MOVS.N	R0, R2
	BX.N	LR