1 /*- 2 * Copyright (c) 1980 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 * 7 * @(#)operand.h 5.2 (Berkeley) 04/12/91 8 */ 9 10 /* 11 * operand.h -- definitions useful to VAX operand decoding 12 */ 13 14 #define opmode(op) (op & 0xf0) 15 #define opregn(op) (op & 0xf) 16 17 /* 18 * operand modes 19 */ 20 #define LITERAL0 0x00 21 #define LITERAL1 0x10 22 #define LITERAL2 0x20 23 #define LITERAL3 0x30 24 #define INDEXED 0x40 25 #define REGISTER 0x50 26 #define REGDEFERED 0x60 27 #define AUTODEC 0x70 28 #define AUTOINC 0x80 29 #define AUTOINCDEF 0x90 30 #define BYTEDISP 0xa0 31 #define BYTEDISPDEF 0xb0 32 #define WORDDISP 0xc0 33 #define WORDDISPDEF 0xd0 34 #define LONGDISP 0xe0 35 #define LONGDISPDEF 0xf0 36 /* 37 * Modes where R is PC 38 */ 39 #define IMMEDIATE 0x8f 40 #define ABSOLUTE 0x9f 41 #define BYTEREL 0xaf 42 #define BYTERELDEF 0xbf 43 #define WORDREL 0xcf 44 #define WORDRELDEF 0xdf 45 #define LONGREL 0xef 46 #define LONGRELDEF 0xff 47 48 /* 49 * register definitions 50 */ 51 #define R0 0 52 #define R1 1 53 #define R2 2 54 #define R3 3 55 #define R4 4 56 #define R5 5 57 #define R6 6 58 #define R7 7 59 #define R8 8 60 #define R9 9 61 #define R10 10 62 #define R11 11 63 #define AP 12 64 #define FP 13 65 #define SP 14 66 #define PC 15 67