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1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
ddb85eed | 3 | * All rights reserved. |
c0bc4ef7 | 4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
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32 | * |
33 | * @(#)vax.h 5.4 (Berkeley) 6/1/90 | |
c0bc4ef7 | 34 | */ |
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35 | |
36 | /* | |
37 | * opcode of the `calls' instruction | |
38 | */ | |
39 | #define CALLS 0xfb | |
40 | ||
41 | /* | |
42 | * offset (in bytes) of the code from the entry address of a routine. | |
43 | * (see asgnsamples for use and explanation.) | |
44 | */ | |
45 | #define OFFSET_OF_CODE 2 | |
9b8e0da9 | 46 | #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) |
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47 | |
48 | /* | |
49 | * register for pc relative addressing | |
50 | */ | |
51 | #define PC 0xf | |
52 | ||
53 | enum opermodes { | |
54 | literal, indexed, reg, regdef, autodec, autoinc, autoincdef, | |
55 | bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef, | |
56 | immediate, absolute, byterel, bytereldef, wordrel, wordreldef, | |
57 | longrel, longreldef | |
58 | }; | |
59 | typedef enum opermodes operandenum; | |
60 | ||
61 | struct modebyte { | |
62 | unsigned int regfield:4; | |
63 | unsigned int modefield:4; | |
64 | }; | |
65 |