code: /**
   * Copyright (c) 2005, Regents of the University of California
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * Neither the name of the University of California, Los Angeles nor the
   * names of its contributors may be used to endorse or promote products
   * derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * Creation date: Nov 16, 2005
   */
  
  package avrora.arch;
  
  import avrora.Defaults;
  import avrora.arch.avr.AVRArchitecture;
  import avrora.arch.legacy.LegacyArchitecture;
  import avrora.arch.msp430.MSP430Architecture;
  import cck.help.HelpCategory;
  import cck.util.ClassMap;
  
  /**
   * The <code>ArchitectureRegistry</code> class implements a registry of all the instruction set architectures
   * supported by Avrora.
   *
   * @author Ben L. Titzer
   */
  public class ArchitectureRegistry {
  
      private static ClassMap archMap;
  
      public static synchronized void addArchitectures() {
          if (archMap == null) {
              archMap = new ClassMap("Architecture", AbstractArchitecture.class);
              //-- DEFAULT ACTIONS
              archMap.addInstance("avr", LegacyArchitecture.INSTANCE);
              archMap.addInstance("avr-new", AVRArchitecture.INSTANCE);
              archMap.addInstance("msp430", MSP430Architecture.INSTANCE);
  
              // plug in a new help category for simulations accesible with "-help simulations"
              HelpCategory hc = new HelpCategory("architectures", "Help for supported instruction set architectures.");
              hc.addOptionValueSection("ARCHITECTURES",
                      "When running a simulation or other program analysis tool, Avrora derives information " +
                      "about the CPU architecture from an internal specification. In order to select the appropriate " +
                      "architecture, each one is named and can be selected with command line options.",
                      "-arch", archMap);
              Defaults.addMainCategory(hc);
              Defaults.addSubCategories(archMap);
          }
      }
  
      public static AbstractArchitecture getArchitecture(String s) {
          addArchitectures();
          return (AbstractArchitecture)archMap.getObjectOfClass(s);
      }
  }
  