projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| c0bc4ef7 DF |
1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. | |
| ddb85eed | 3 | * All rights reserved. |
| c0bc4ef7 | 4 | * |
| 6ecf3d85 | 5 | * %sccs.include.redist.c% |
| ddb85eed | 6 | * |
| 6ecf3d85 | 7 | * @(#)vax.h 5.4 (Berkeley) %G% |
| c0bc4ef7 | 8 | */ |
| 9ae42d58 KM |
9 | |
| 10 | /* | |
| 11 | * opcode of the `calls' instruction | |
| 12 | */ | |
| 13 | #define CALLS 0xfb | |
| 14 | ||
| 15 | /* | |
| 16 | * offset (in bytes) of the code from the entry address of a routine. | |
| 17 | * (see asgnsamples for use and explanation.) | |
| 18 | */ | |
| 19 | #define OFFSET_OF_CODE 2 | |
| 9b8e0da9 | 20 | #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) |
| 9ae42d58 KM |
21 | |
| 22 | /* | |
| 23 | * register for pc relative addressing | |
| 24 | */ | |
| 25 | #define PC 0xf | |
| 26 | ||
| 27 | enum opermodes { | |
| 28 | literal, indexed, reg, regdef, autodec, autoinc, autoincdef, | |
| 29 | bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef, | |
| 30 | immediate, absolute, byterel, bytereldef, wordrel, wordreldef, | |
| 31 | longrel, longreldef | |
| 32 | }; | |
| 33 | typedef enum opermodes operandenum; | |
| 34 | ||
| 35 | struct modebyte { | |
| 36 | unsigned int regfield:4; | |
| 37 | unsigned int modefield:4; | |
| 38 | }; | |
| 39 |