SECTION	.text
		ALIGN	16
		BITS	32

		GLOBAL	_RECSUM
_RECSUM:
; Define PROC RECSUM

	PUSH	EBP; Save the BP value in the caller's context
	MOV	EBP,ESP; EBP now reflects the callee's context

	CMP	DWORD [EBP+8],1; Since EBP was pushed, parameter is now at EBP+8
	JNE	L1
	MOV	EAX,1 ; parameter is 1, terminate recursion and return 1
	POP	EBP    ; Restore EBP to caller's context before returning
	RET	4; Return to caller after popping 4 bytes of stack (the parameter)

; argument > 1, make a recursive call
; First decrement argument 
L1:     MOV  	EBX,[EBP+8]
	DEC	EBX
	PUSH    EBX; The decremented argumented now becomes parameter for
                  ; next recursive call
	CALL	_RECSUM

        ; If you are at this line, you just returned from a recursive call
	ADD	EAX,[EBP+8]; Upon return, add argument to this call which is still on stack
                           ; to result of recursive call in EAX

	POP	EBP; Restore EBP to caller's context before returning
	RET	4; Pop 4 bytes i.e. argument from stack and return