.TITLE	QSUB	QUAD WORD SUBTRACT
	.ENTRY	QSUB,^M<R2>
;
; PERFORM QUADWORD SUBTRACTION USING THE TECHNIQUE DESCRIBED
; IN ARCHITECTURE HANDBOOK
;
	MOVL	4(AP),R0
	MOVL	8(AP),R1
	MOVL	12(AP),R2
	MOVQ	(R1),(R0)
	SUBL	(R2),(R0)
	SBWC	4(R2),4(R0)
	RET
	.END