1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23/*	$OpenBSD: vax.h,v 1.2 1996/06/26 05:34:03 deraadt Exp $	*/
24/*	$NetBSD: vax.h,v 1.4 1995/04/19 07:16:31 cgd Exp $	*/
25
26/*
27 * Copyright (c) 1983, 1993
28 *	The Regents of the University of California.  All rights reserved.
29 *
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
32 * are met:
33 * 1. Redistributions of source code must retain the above copyright
34 *    notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 *    notice, this list of conditions and the following disclaimer in the
37 *    documentation and/or other materials provided with the distribution.
38 * 3. All advertising materials mentioning features or use of this software
39 *    must display the following acknowledgement:
40 *	This product includes software developed by the University of
41 *	California, Berkeley and its contributors.
42 * 4. Neither the name of the University nor the names of its contributors
43 *    may be used to endorse or promote products derived from this software
44 *    without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 *
58 *	@(#)vax.h	8.1 (Berkeley) 6/6/93
59 */
60    /*
61     *	opcode of the `calls' instruction
62     */
63#define	CALLS	0xfb
64
65    /*
66     *	offset (in bytes) of the code from the entry address of a routine.
67     *	(see asgnsamples for use and explanation.)
68     */
69#define OFFSET_OF_CODE	2
70#define	UNITS_TO_CODE	(OFFSET_OF_CODE / sizeof(UNIT))
71
72    /*
73     *	register for pc relative addressing
74     */
75#define	PC	0xf
76
77enum opermodes {
78    literal, indexed, reg, regdef, autodec, autoinc, autoincdef,
79    bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef,
80    immediate, absolute, byterel, bytereldef, wordrel, wordreldef,
81    longrel, longreldef
82};
83typedef enum opermodes	operandenum;
84
85struct modebyte {
86    unsigned int	regfield:4;
87    unsigned int	modefield:4;
88};
89
90