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71 lines
2.5 KiB
71 lines
2.5 KiB
/*
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* @(#)Machine.java 2.1 2003/10/07
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*
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* Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
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* Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
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* and School of Computer and Math Sciences, The Robert Gordon University,
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* St. Andrew Street, Aberdeen AB25 1HG, Scotland.
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* All rights reserved.
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*
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* This software is provided free for educational use only. It may
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* not be used for commercial purposes without the prior written permission
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* of the authors.
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*/
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package Triangle.AbstractMachine;
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public final class Machine {
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public final static int maxRoutineLevel = 7;
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// WORDS AND ADDRESSES
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// Java has no type synonyms, so the following representations are
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// assumed:
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//
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// type
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// Word = -32767..+32767; {16 bits signed}
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// DoubleWord = -2147483648..+2147483647; {32 bits signed}
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// CodeAddress = 0..+32767; {15 bits unsigned}
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// DataAddress = 0..+32767; {15 bits unsigned}
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// INSTRUCTIONS
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// Operation codes
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public final static int LOADop = 0, LOADAop = 1, LOADIop = 2, LOADLop = 3, STOREop = 4, STOREIop = 5, CALLop = 6,
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CALLIop = 7, RETURNop = 8, PUSHop = 10, POPop = 11, JUMPop = 12, JUMPIop = 13, JUMPIFop = 14, HALTop = 15;
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// CODE STORE
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public static Instruction[] code = new Instruction[1024];
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// CODE STORE REGISTERS
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public final static int CB = 0, PB = 1024, // = upper bound of code array + 1
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PT = 1052; // = PB + 28
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// REGISTER NUMBERS
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public final static int CBr = 0, CTr = 1, PBr = 2, PTr = 3, SBr = 4, STr = 5, HBr = 6, HTr = 7, LBr = 8,
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L1r = LBr + 1, L2r = LBr + 2, L3r = LBr + 3, L4r = LBr + 4, L5r = LBr + 5, L6r = LBr + 6, CPr = 15;
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// DATA REPRESENTATION
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public final static int booleanSize = 1, characterSize = 1, integerSize = 1, addressSize = 1,
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closureSize = 2 * addressSize,
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linkDataSize = 3 * addressSize,
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falseRep = 0, trueRep = 1, maxintRep = 32767;
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// ADDRESSES OF PRIMITIVE ROUTINES
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public final static int idDisplacement = 1, notDisplacement = 2, andDisplacement = 3, orDisplacement = 4,
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succDisplacement = 5, predDisplacement = 6, negDisplacement = 7, addDisplacement = 8, subDisplacement = 9,
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multDisplacement = 10, divDisplacement = 11, modDisplacement = 12, ltDisplacement = 13, leDisplacement = 14,
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geDisplacement = 15, gtDisplacement = 16, eqDisplacement = 17, neDisplacement = 18, eolDisplacement = 19,
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eofDisplacement = 20, getDisplacement = 21, putDisplacement = 22, geteolDisplacement = 23,
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puteolDisplacement = 24, getintDisplacement = 25, putintDisplacement = 26, newDisplacement = 27,
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disposeDisplacement = 28;
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}
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