1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)vax.h 8.1 (Berkeley) 06/06/93 8 */ 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 20 #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) 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 40