.MCALL	.MODULE
.MODULE	CALL$F,VERSION=02,COMMENT=<CALL$F/SYSLIB>,IDENT=NO,LIB=YES

; Copyright (c) 1998 by Mentec, Inc., Nashua, NH.
; All rights reserved
;
; This software is furnished under a license for use only on a
; single computer system and  may  be  copied  only  with  the
; inclusion of the above copyright notice.  This software,  or
; any other copies thereof, may not be provided  or  otherwise
; made available to any other person except for  use  on  such
; system and to one who agrees to these license  terms.  Title
; to  and  ownership of the software shall at all times remain
; in Mentec, Inc.
;
; The information in this document is subject to change without
; notice and should not be construed as a commitment by Digital
; Equipment Corporation, or Mentec, Inc.
;
; Digital and Mentec  assume  no  responsibility for the use or
; reliability of its software on equipment which is not supplied
; by Digital  or Mentec,  and listed  in the  Software  Product
; Description.
.SBTTL	CALL$F	- Routine to call FORTRAN style subroutines
;
;	CALL CALL$F
;
;	This routine is used to call FORTRAN style functions
;	and preserve R1 -- R4 across the call.
;
;Inputs:
;R5 points to arg list
;R0 points to routine to call
;
;Outputs:
;R0 as returned by subroutine
;R1-R4 saved
;R5 undefined

; NO ERRORS ARE POSSIBLE
;
;	except as defined by the called routine
;
;JFW 9-Jan-85
;
.PSECT	SYS$I

.GLOBL	$SYSLB

CALL$F::
	MOV	R4,-(SP)	;Save all but R0 and R5
	MOV	R3,-(SP)
	MOV	R2,-(SP)
	MOV	R1,-(SP)
	CALL	@R0		;Call routine
	MOV	(SP)+,R1	;Restore all but R5 and R0
	MOV	(SP)+,R2
	MOV	(SP)+,R3
	MOV	(SP)+,R4
	RETURN			;And done
.END