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Trailing-Edge - PDP-10 Archives - decuslib20-03 - decus/20-0078/libsim/adjptr.mac
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COMMENT * SIMULA specification;
OPTIONS(/E:QUICK,adjptr);
INTEGER PROCEDURE adjptr(bp,incr);
INTEGER  bp, incr;
COMMENT Adjust the byte pointer BP by INCR bytes, using ADJBP
(works only on KL-10/20).
The value of ADJPTR is the adjusted pointer.
;

!*;! MACRO-10 code !*;!

	TITLE	adjptr
	ENTRY	adjptr
	SUBTTL	SIMULA utility, Lars Enderin Jan 1978

;!*** Copyright 1978 by the Swedish Defence Research Institute. ***
;!*** Copying is allowed.					***


	sall
	search	simmac,simmcr,simrpa
	macinit

	;! Local definitions ;!

	incr==<bp==<result==0>>+1

adjptr:	PROC
	LD bp(XTAC)
	IF JUMPE X1,FALSE
	THEN
	  ADJBP X1,bp(XTAC)
	  ST X1,result(XTAC)
	FI
	RET
	EPROC
	LIT
	END;