content: package mars.mips.dump;
  
  /*
   * Copyright (c) 2003-2008, 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)
   */
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.PrintStream;
  
  import mars.Globals;
  import mars.ProgramStatement;
  import mars.mips.hardware.AddressErrorException;
  import mars.mips.hardware.Memory;
  import mars.util.Binary;
  
  /**
   * Dump MIPS memory contents in Segment Window format. Each line of text output
   * resembles the Text Segment Window or Data Segment Window depending on which
   * segment is selected for the dump. Written using PrintStream's println()
   * method. Each line of Text Segment Window represents one word of text segment
   * memory. The line includes (1) address, (2) machine code in hex, (3) basic
   * instruction, (4) source line. Each line of Data Segment Window represents 8
   * words of data segment memory. The line includes address of first word for
   * that line followed by 8 32-bit values. In either case, addresses and values
   * are displayed in decimal or hexadecimal representation according to the
   * corresponding settings.
   *
   * @author Pete Sanderson
   * @version January 2008
   */
  
  public class SegmentWindowDumpFormat extends AbstractDumpFormat {
  
  	/**
  	 * Constructor. There is no standard file extension for this format.
  	 */
  	public SegmentWindowDumpFormat() {
  		super("Text/Data Segment Window", "SegmentWindow",
  				" Text Segment Window or Data Segment Window format to text file", null);
  	}
  
  	/**
  	 * Write MIPS memory contents in Segment Window format. Each line of text output
  	 * resembles the Text Segment Window or Data Segment Window depending on which
  	 * segment is selected for the dump. Written using PrintStream's println()
  	 * method.
  	 *
  	 * @param file         File in which to store MIPS memory contents.
  	 * @param firstAddress first (lowest) memory address to dump. In bytes but must
  	 *                     be on word boundary.
  	 * @param lastAddress  last (highest) memory address to dump. In bytes but must
  	 *                     be on word boundary. Will dump the word that starts at
  	 *                     this address.
  	 * @throws AddressErrorException if firstAddress is invalid or not on a word
  	 *                               boundary.
  	 * @throws IOException           if error occurs during file output.
  	 */
  	@Override
  	public void dumpMemoryRange(final File file, final int firstAddress, final int lastAddress)
  			throws AddressErrorException, IOException {
  
  		final PrintStream out = new PrintStream(new FileOutputStream(file));
  
  		final boolean hexAddresses = Globals.getSettings().getDisplayAddressesInHex();
  
  		// If address in data segment, print in same format as Data Segment Window
  		if (Memory.inDataSegment(firstAddress)) {
  			final boolean hexValues = Globals.getSettings().getDisplayValuesInHex();
  			int offset = 0;
  			String string = "";
  			try {
  				for (int address = firstAddress; address <= lastAddress; address += Memory.WORD_LENGTH_BYTES) {
  					if (offset % 8 == 0) {
  						string = (hexAddresses ? Binary.intToHexString(address)
  								: Binary.unsignedIntToIntString(address)) + "    ";
  					}
  					offset++;
  					final Integer temp = Globals.memory.getRawWordOrNull(address);
  					if (temp == null) { break; }
  					string += (hexValues ? Binary.intToHexString(temp)
  							: ("           " + temp).substring(temp.toString().length())) + " ";
  					if (offset % 8 == 0) {
  						out.println(string);
  						string = "";
  					}
  				}
  			} finally {
  				out.close();
  			}
  			return;
  		}
  
  		if (!Memory.inTextSegment(firstAddress)) { return; }
  		// If address in text segment, print in same format as Text Segment Window
  		out.println(" Address    Code        Basic                     Source");
  		//           12345678901234567890123456789012345678901234567890
  		//                    1         2         3         4         5
  		out.println();
  		String string = null;
  		try {
  			for (int address = firstAddress; address <= lastAddress; address += Memory.WORD_LENGTH_BYTES) {
  				string = (hexAddresses ? Binary.intToHexString(address) : Binary.unsignedIntToIntString(address))
  						+ "  ";
  				final Integer temp = Globals.memory.getRawWordOrNull(address);
  				if (temp == null) { break; }
  				string += Binary.intToHexString(temp) + "  ";
  				try {
  					final ProgramStatement ps = Globals.memory.getStatement(address);
  					string += (ps.getPrintableBasicAssemblyStatement() + "                      ").substring(0, 22);
  					string += ((ps.getSource() == "" ? "" : new Integer(ps.getSourceLine()).toString()) + "     ")
  							.substring(0, 5);
  					string += ps.getSource();
  				} catch (final AddressErrorException aee) {}
  				out.println(string);
  			}
  		} finally {
  			out.close();
  		}
  	}
  
  }
  