code: /*
   * Copyright (c) 2014, Aleksander Osman
   * 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.
   * 
   * 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 HOLDER 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.
   */
  
  package ao486.test.layers;
  
  import java.util.Random;
  
  public class FlagsLayer extends Layer {
      public FlagsLayer(Random random) {
          this(Type.RANDOM, random);
      }
      public FlagsLayer(FlagsLayer.Type type, Random random) {
          this.random = random;
          
          cf = random.nextBoolean();
          pf = random.nextBoolean();
          af = random.nextBoolean();
          zf = random.nextBoolean();
          sf = random.nextBoolean();
          tf = false; //random.nextBoolean();
          iflag = random.nextBoolean();
          df = random.nextBoolean();
          of = random.nextBoolean();
          iopl = random.nextInt(4);
          nt = (type == Type.NOT_V8086_NT)?       true :
               (type == Type.NOT_V8086_NOT_NT)?   false :
                                                  random.nextBoolean();
          rf = false;
          vm = (type == Type.V8086)?                                  true :
               (type == Type.NOT_V8086 || type == Type.NOT_V8086_NT || type == Type.NOT_V8086_NOT_NT)? false :
                                                                      random.nextBoolean();
          ac = random.nextBoolean();
          id = random.nextBoolean();
      }
      public enum Type {
          RANDOM,
          V8086,
          NOT_V8086,
          NOT_V8086_NT,
          NOT_V8086_NOT_NT
      }
      
      public long cflag()  { return cf? 1 : 0; }
      public long pflag()  { return pf? 1 : 0; }
      public long aflag()  { return af? 1 : 0; }
      public long zflag()  { return zf? 1 : 0; }
      public long sflag()  { return sf? 1 : 0; }
      public long tflag()  { return tf? 1 : 0; }
      public long iflag()  { return iflag? 1 : 0; }
      public long dflag()  { return df? 1 : 0; }
      public long oflag()  { return of? 1 : 0; }
      public long iopl()   { return iopl; }
      public long ntflag() { return nt? 1 : 0; }
      public long rflag()  { return rf? 1 : 0; }
      public long vmflag() { return vm? 1 : 0; }
      public long acflag() { return ac? 1 : 0; }
      public long idflag() { return id? 1 : 0; }
      
      boolean cf, pf, af, zf, sf, tf, iflag, df, of, nt, rf, vm, ac, id;
      int iopl;
  }
  