AREA lab2_text, CODE
SWI_Exit EQU 0x11 
	ENTRY

start

init	MOV R0, #0
	MOV R1, #0
	MOV R2, #0
	MOV R3, #0
	MSR CPSR_f,#0
	
ex1	MOV R0,#3
	MOV R1,#2
	ADDS R2,R0,R1
		
	MOV R0, #0
	MOV R1, #0
	MOV R2, #0
	MSR CPSR_f,#0
		
ex2	MOV R0,#4
	MOV R1,#3			
	SUBS R2,R0,R1
	SUBS R3,R1,R0
			
	MOV R0,#0
	MOV R1,#0
	MOV R2,#0
	MOV R3,#0
	MSR CPSR_f, #0

ex3	MOV R0,#1
	MOV R1,#2
	CMP R0,R1
	BLE smaller
greater	MOV R2,#2
	B init4
smaller	MOV R2,#1

init4	MOV R0, #0
	MOV R1, #0
	MOV R2, #0
	MSR CPSR_f,#0
			
ex4	MOV R0,#3
	MOV R1,#1
loop	SUBS R0,R0,R1
	BGE loop
			
	MOV R0, #0
	MOV R1, #0
	MSR CPSR_f,#0
			
ex5	ADR R3,my_data
	LDR R0,[R3]
	LDR R1,[R3,#4]!
	ADD R2,R1,R0
	STR R2,[R3,#4]
		
stop	
	SWI SWI_Exit 

	AREA my_data_area, DATA
		
my_data	DCD	1,2,0

	END