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