numbers1	DCD		1, 2, 3, 4, 5, 6
numbers2	DCD		0, 0, 0, 0, 0, 0
		LDR		R1, =numbers1
		LDR		R2, =numbers2
		MOV		R3, #0
		MOV		R4, #6

		SUB		SP, SP, #4
		STR		R4, [SP, #1]
		STR		R3, [SP, #2]
		STR		R2, [SP, #3]
		STR		R1, [SP, #4]
		BL		MYSTERY
		ADD		SP, SP, #4
		
		END
MYSTERY
		STMDA		SP!, {R1, R2, R3, R4, R5, R6, FP, LR}
		ADD		FP, SP, #12
		LDR		R1, [FP, #0]
		LDR		R2, [FP, #-1]
		LDR		R3, [FP, #-2]
		LDR		R4, [FP, #-3]
		
		CMP		R3, R4
		BGE		RESTORE
		
		LDR		R5, [R1, R3, LSL #2]
		MOV		R6, #0
LOOP
		CMP		R5, #0
		BEQ		DONE
		ADD		R6, R6, R5
		SUB		R5, R5, #1
		BAL		LOOP
DONE
		STR		R6, [R2, R3, LSL #2]
		ADD		R3, R3, #1
		
		SUB		SP, SP, #4
		STR		R4, [SP, #1]
		STR		R3, [SP, #2]
		STR		R2, [SP, #3]
		STR		R1, [SP, #4]
		BL		MYSTERY
		ADD		SP, SP, #4
RESTORE
		LDMIB		SP!, {R1, R2, R3, R4, R5, R6, FP, LR}
		MOV		PC, LR