53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)vax.h 5.4 (Berkeley) 6/1/90
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*/
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/*
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* opcode of the `calls' instruction
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*/
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#define CALLS 0xfb
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/*
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* offset (in bytes) of the code from the entry address of a routine.
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* (see asgnsamples for use and explanation.)
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*/
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#define OFFSET_TO_CODE 2
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#define UNITS_TO_CODE (OFFSET_TO_CODE / sizeof(UNIT))
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/*
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* register for pc relative addressing
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*/
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#define PC 0xf
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enum opermodes
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{
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literal, indexed, reg, regdef, autodec, autoinc, autoincdef,
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bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef,
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immediate, absolute, byterel, bytereldef, wordrel, wordreldef,
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longrel, longreldef
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};
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typedef enum opermodes operandenum;
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struct modebyte
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{
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unsigned int regfield:4;
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unsigned int modefield:4;
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};
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