initial push with task5b done

2023-10-19 15:00:09 +01:00
parent 3c134ed3b5
commit a607f09f6b
208 changed files with 13177 additions and 0 deletions
@@ -0,0 +1,3 @@
+/target/
+/.classpath
+/build/
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Triangle.AbstractMachine</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>
@@ -0,0 +1,4 @@
+apply plugin: 'java-library'
+apply plugin: 'eclipse'
+
+sourceCompatibility = 11
@@ -0,0 +1,12 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>triangle-abstractmachine</artifactId>
+    <packaging>jar</packaging>
+    <parent>
+        <groupId>triangle.tools</groupId>
+        <artifactId>triangle-tools</artifactId>
+        <version>2.1</version>
+        <relativePath>../</relativePath>
+    </parent>
+</project>
@@ -0,0 +1,71 @@
+/*
+ * @(#)Instruction.java                        
+ * 
+ * Revisions and updates (c) 2022-2023 Sandy Brownlee. alexander.brownlee@stir.ac.uk
+ * 
+ * Original release:
+ *
+ * Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
+ * Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
+ * and School of Computer and Math Sciences, The Robert Gordon University,
+ * St. Andrew Street, Aberdeen AB25 1HG, Scotland.
+ * All rights reserved.
+ *
+ * This software is provided free for educational use only. It may
+ * not be used for commercial purposes without the prior written permission
+ * of the authors.
+ */
+
+package triangle.abstractMachine;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.EOFException;
+import java.io.IOException;
+
+public class Instruction {
+
+	// Java has no type synonyms, so the following representations are
+	// assumed:
+	//
+	// type
+	// OpCode = 0..15; {4 bits unsigned}
+	// Length = 0..255; {8 bits unsigned}
+	// Operand = -32767..+32767; {16 bits signed}
+
+	// Represents TAM instructions.
+	final OpCode opCode;
+	final Register register;
+	final int length;
+	int operand; // Not final to allow for patching jump address
+
+	public Instruction(OpCode opcode, Register register, int length, int operand) {
+		this.opCode = opcode;
+		this.register = register;
+		this.length = length;
+		this.operand = operand;
+	}
+
+	public void setOperand(int operand) {
+		this.operand = operand;
+	}
+	
+	public void write(DataOutputStream output) throws IOException {
+		output.writeInt(opCode.ordinal());
+		output.writeInt(register.ordinal());
+		output.writeInt(length);
+		output.writeInt(operand);
+	}
+
+	public static Instruction read(DataInputStream input) throws IOException {
+		try {
+			var opCode = OpCode.values()[input.readInt()];
+			var register = Register.values()[input.readInt()];
+			var length = input.readInt();
+			var operand = input.readInt();
+			return new Instruction(opCode, register, length, operand);
+		} catch (EOFException s) {
+			return null;
+		}
+	}
+}
@@ -0,0 +1,58 @@
+/*
+ * @(#)Machine.java                        
+ * 
+ * Revisions and updates (c) 2022-2023 Sandy Brownlee. alexander.brownlee@stir.ac.uk
+ * 
+ * Original release:
+ *
+ * Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
+ * Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
+ * and School of Computer and Math Sciences, The Robert Gordon University,
+ * St. Andrew Street, Aberdeen AB25 1HG, Scotland.
+ * All rights reserved.
+ *
+ * This software is provided free for educational use only. It may
+ * not be used for commercial purposes without the prior written permission
+ * of the authors.
+ */
+
+package triangle.abstractMachine;
+
+public final class Machine {
+
+	public final static int maxRoutineLevel = 7;
+
+	// WORDS AND ADDRESSES
+
+	// Java has no type synonyms, so the following representations are
+	// assumed:
+	//
+	// type
+	// Word = -32767..+32767; {16 bits signed}
+	// DoubleWord = -2147483648..+2147483647; {32 bits signed}
+	// CodeAddress = 0..+32767; {15 bits unsigned}
+	// DataAddress = 0..+32767; {15 bits unsigned}
+
+	// INSTRUCTIONS
+
+	// CODE STORE
+
+	public static Instruction[] code = new Instruction[1024];
+
+	// CODE STORE REGISTERS
+
+	public final static int CB = 0, PB = 1024, // = upper bound of code array + 1
+			PT = 1052; // = PB + 28
+
+	// REGISTER NUMBERS
+
+	// DATA REPRESENTATION
+
+	public final static int booleanSize = 1, characterSize = 1, integerSize = 1, addressSize = 1,
+			closureSize = 2 * addressSize,
+
+			linkDataSize = 3 * addressSize,
+
+			falseRep = 0, trueRep = 1, maxintRep = 32767;
+
+}
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+package triangle.abstractMachine;
+
+public enum OpCode {
+	LOAD, LOADA, LOADI, LOADL, STORE, STOREI, CALL, CALLI, RETURN, NOP, PUSH, POP, JUMP, JUMPI, JUMPIF, HALT
+}
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+package triangle.abstractMachine;
+
+public enum Primitive {
+	ID, NOT, AND, OR, SUCC, PRED, NEG, ADD, SUB, MULT, DIV, MOD, LT, LE, GE, GT, EQ, NE, EOL, EOF, GET, PUT, GETEOL,
+	PUTEOL, GETINT, PUTINT, NEW, DISPOSE
+}
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+package triangle.abstractMachine;
+
+public enum Register {
+	CB, CT, PB, PT, SB, ST, HB, HT, LB, L1, L2, L3, L4, L5, L6, CP
+}