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1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
ddb85eed | 3 | * All rights reserved. |
c0bc4ef7 | 4 | * |
ddb85eed | 5 | * Redistribution and use in source and binary forms are permitted |
2124b336 KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
ddb85eed | 16 | * |
2124b336 | 17 | * @(#)vax.h 5.3 (Berkeley) %G% |
c0bc4ef7 | 18 | */ |
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19 | |
20 | /* | |
21 | * opcode of the `calls' instruction | |
22 | */ | |
23 | #define CALLS 0xfb | |
24 | ||
25 | /* | |
26 | * offset (in bytes) of the code from the entry address of a routine. | |
27 | * (see asgnsamples for use and explanation.) | |
28 | */ | |
29 | #define OFFSET_OF_CODE 2 | |
9b8e0da9 | 30 | #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) |
9ae42d58 KM |
31 | |
32 | /* | |
33 | * register for pc relative addressing | |
34 | */ | |
35 | #define PC 0xf | |
36 | ||
37 | enum opermodes { | |
38 | literal, indexed, reg, regdef, autodec, autoinc, autoincdef, | |
39 | bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef, | |
40 | immediate, absolute, byterel, bytereldef, wordrel, wordreldef, | |
41 | longrel, longreldef | |
42 | }; | |
43 | typedef enum opermodes operandenum; | |
44 | ||
45 | struct modebyte { | |
46 | unsigned int regfield:4; | |
47 | unsigned int modefield:4; | |
48 | }; | |
49 |