1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 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. 16 * 17 * @(#)vax.h 5.3 (Berkeley) 06/29/88 18 */ 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 30 #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) 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 50