AREA    main, CODE, READONLY
				EXPORT	__main
				ALIGN
				ENTRY

;===============================================

ABSTRACT_PROC	PROC

				BX lr
				ENDP

;===============================================

__main			PROC

				;BL ABSTRACT_PROC

				LDR R2, =mB
				LDR R3, [R2]

				LDR R2, =mC
				LDR R4, [R2]
				ADD R3, R3, R4

				LDR R2, =mD
				LDR R4, [R2]
				SUB R3, R3, R4

				LDR R2, =mA
				STR R3, [R2]

				ENDP

;===============================================

				AREA    myData, DATA, READWRITE
				ALIGN

mA 				DCD 0
mB				DCD -2
mC				DCD -1
mD				DCD 2

				END