content: package mars.mips.hardware;
  
  /*
   * Copyright (c) 2003-2006, Pete Sanderson and Kenneth Vollmar
   *
   * Developed by Pete Sanderson (psanderson@otterbein.edu) and Kenneth Vollmar
   * (kenvollmar@missouristate.edu)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * (MIT license, http://www.opensource.org/licenses/mit-license.html)
   */
  
  /**
   * Object provided to Observers of runtime access to MIPS memory. Observer can
   * get the access type (R/W), address and length in bytes (4,2,1).
   *
   * @author Pete Sanderson
   * @version July 2005
   */
  
  public class MemoryAccessNotice extends AccessNotice {
  
  	private final int address;
  	private final int length;
  	private final int value;
  
  	/**
  	 * Constructor will be called only within this package, so assume address and
  	 * length are in valid ranges.
  	 */
  	MemoryAccessNotice(final int type, final int address, final int length, final int value) {
  		super(type);
  		this.address = address;
  		this.length = length;
  		this.value = value;
  	}
  
  	/**
  	 * Constructor will be called only within this package, so assume address is in
  	 * valid range.
  	 */
  	public MemoryAccessNotice(final int type, final int address, final int value) {
  		super(type);
  		this.address = address;
  		length = Memory.WORD_LENGTH_BYTES;
  		this.value = value;
  	}
  
  	/** Fetch the memory address that was accessed. */
  	public int getAddress() { return address; }
  
  	/** Fetch the length in bytes of the access operation (4,2,1). */
  	public int getLength() { return length; }
  
  	/** Fetch the value of the access operation (the value read or written). */
  	public int getValue() { return value; }
  
  	/** String representation indicates access type, address and length in bytes */
  	@Override
  	public String toString() {
  		return (getAccessType() == AccessNotice.READ ? "R " : "W ") + "Mem " + address + " " + length + "B = " + value;
  	}
  }
  