vax/include/frame.h

1.1  ragge /*	$NetBSD: frame.h,v 1.1 1995/11/12 15:07:30 ragge Exp $ */
1.1  ragge /*
1.1  ragge  * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
1.1  ragge  * All rights reserved.
1.1  ragge  *
1.1  ragge  * Redistribution and use in source and binary forms, with or without
1.1  ragge  * modification, are permitted provided that the following conditions
1.1  ragge  * are met:
1.1  ragge  * 1. Redistributions of source code must retain the above copyright
1.1  ragge  *    notice, this list of conditions and the following disclaimer.
1.1  ragge  * 2. Redistributions in binary form must reproduce the above copyright
1.1  ragge  *    notice, this list of conditions and the following disclaimer in the
1.1  ragge  *    documentation and/or other materials provided with the distribution.
1.1  ragge  * 3. All advertising materials mentioning features or use of this software
1.1  ragge  *    must display the following acknowledgement:
1.1  ragge  *      This product includes software developed at Ludd, University of
1.1  ragge  *      Lule}, Sweden and its contributors.
1.1  ragge  * 4. The name of the author may not be used to endorse or promote products
1.1  ragge  *    derived from this software without specific prior written permission
1.1  ragge  *
1.1  ragge  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.1  ragge  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1.1  ragge  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.1  ragge  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
1.1  ragge  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
1.1  ragge  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.1  ragge  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.1  ragge  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.1  ragge  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
1.1  ragge  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1  ragge  */
1.1  ragge
1.1  ragge /*
1.1  ragge  * Description of calls frame on stack. This is the
1.1  ragge  * standard way of making procedure calls on vax systems.
1.1  ragge  */
1.1  ragge struct callsframe {
1.1  ragge 	unsigned int	ca_cond;	/* condition handler */
1.1  ragge 	unsigned int	ca_maskpsw;	/* register mask and saved psw */
1.1  ragge 	unsigned int	ca_ap;		/* argument pointer */
1.1  ragge 	unsigned int	ca_fp;		/* frame pointer */
1.1  ragge 	unsigned int	ca_pc;		/* program counter */
1.1  ragge 	unsigned int	ca_argno;	/* argument count on stack */
1.1  ragge 	unsigned int	ca_arg1;	/* first arg on stack */
1.1  ragge 	/* This can be followed by more arguments */
1.1  ragge };
1.1  ragge
1.1  ragge /* Offset to beginning of calls frame from first arg */
1.1  ragge #define	FRAMEOFFSET(arg1) ((struct callsframe *)((unsigned int)&(arg1) - 24))
1.1  ragge