InstructionWorkBlockF99b.java

/*
  InstructionWorkBlockF99b.java

  (c) 2010-2013 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package v9t9.machine.f99b.asm;

import java.util.Arrays;

import v9t9.common.cpu.ICpuState;
import v9t9.common.cpu.InstructionWorkBlock;

public final class InstructionWorkBlockF99b extends InstructionWorkBlock {
    
	private static short[] NO_ENTRIES = new short[0];
	
    public short sp;
	public short rp;
	public short up;
	public short lp;
	public boolean showSymbol;
	
	public short[] inStack = NO_ENTRIES;
	public short[] inReturnStack = NO_ENTRIES;

	public InstructionWorkBlockF99b(ICpuState cpuState) {
    	super(cpuState);
	}
    
    public void copyTo(InstructionWorkBlockF99b copy) {
    	super.copyTo(copy);
    	copy.sp = sp;
    	copy.rp = rp;
    	copy.up = up;
    	copy.lp = lp;
    	copy.showSymbol = showSymbol;
    	copy.inStack = Arrays.copyOf(inStack, inStack.length);
    	copy.inReturnStack = Arrays.copyOf(inReturnStack, inReturnStack.length);
    }
    
    /* (non-Javadoc)
     * @see v9t9.common.cpu.InstructionWorkBlock#copy()
     */
    @Override
    public InstructionWorkBlock copy() {
    	InstructionWorkBlock block = new InstructionWorkBlockF99b(cpu);
		this.copyTo(block);
		return block;
    }

	/**
	 * @return
	 */
	public int nextByte() {
		return domain.readByte(pc++) & 0xff;
	}
	/**
	 * @return
	 */
	public int nextWord() {
		return (domain.readByte(pc++) << 8) | domain.readByte(pc++) & 0xff;
	}
	
}