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.transfer_data;
  
  import ao486.test.TestUnit;
  import static ao486.test.TestUnit.run_test;
  import ao486.test.layers.FlagsLayer;
  import ao486.test.layers.GeneralRegisterLayer;
  import ao486.test.layers.HandleModeChangeLayer;
  import ao486.test.layers.IOLayer;
  import ao486.test.layers.InstructionLayer;
  import ao486.test.layers.MemoryLayer;
  import ao486.test.layers.OtherLayer;
  import ao486.test.layers.Pair;
  import ao486.test.layers.SegmentLayer;
  import ao486.test.layers.StackLayer;
  import java.io.Serializable;
  import java.util.LinkedList;
  import java.util.Random;
  
  public class TestMOVSX_MOVZX extends TestUnit implements Serializable {
      public static void main(String args[]) throws Exception {
          run_test(TestMOVSX_MOVZX.class);
      }
      
      //--------------------------------------------------------------------------
      @Override
      public int get_test_count() throws Exception {
          return 100;
      }
      
      @Override
      public void init() throws Exception {
          random = new Random(5 + index);
          
          long rpl = random.nextInt(4);
          
          String instruction;
          while(true) {
              layers.clear();
              
              LinkedList<Pair<Long, Long>> prohibited_list = new LinkedList<>();
              
              InstructionLayer instr = new InstructionLayer(random, prohibited_list);
              layers.add(instr);
              layers.add(new StackLayer(random, prohibited_list));
              layers.add(new OtherLayer(OtherLayer.Type.RANDOM, random));
              layers.add(new FlagsLayer(FlagsLayer.Type.RANDOM, random));
              layers.add(new GeneralRegisterLayer(random));
              layers.add(new SegmentLayer(random));
              layers.add(new MemoryLayer(random));
              layers.add(new IOLayer(random));
              layers.addFirst(new HandleModeChangeLayer(
                      getInput("cr0_pe"),
                      getInput("vmflag"),
                      rpl, //getInput("cs_rpl"),
                      getInput("cs_p"),
                      getInput("cs_s"),
                      getInput("cs_type")
              ));
              
              // instruction size
              boolean cs_d_b = getInput("cs_d_b") == 1;
              
              boolean a32 = random.nextBoolean();
              boolean o32 = random.nextBoolean();
              
              // instruction
              instruction = prepare_instr(cs_d_b, a32, o32, null);
              
              instruction += instruction;
              instruction += "0F0F";
              
              // add instruction
              instr.add_instruction(instruction);
              
              // end condition
              break;
          }
          
          System.out.println("Instruction: [" + instruction + "]");
      }
      
      String prepare_instr(boolean cs_d_b, boolean a32, boolean o32, byte modregrm_bytes[]) throws Exception {
          
          int opcodes[] = {
              0xB6,0xB7,0xBE,0xBF
          };
          
          String prefix = "";
          if(cs_d_b != o32) { prefix = "66" + prefix; }
          if(cs_d_b != a32) { prefix = "67" + prefix; }
          
          int     opcode      = opcodes[random.nextInt(opcodes.length)];
          boolean is_modregrm = true;
          
          byte possible_modregrm = (byte)random.nextInt();
          byte possible_sib      = (byte)random.nextInt();
        
          int len = (is_modregrm == false)? 1 : 1 + modregrm_len(!a32, unsigned(possible_modregrm), unsigned(possible_sib));
  
          byte instr[] = new byte[len];
          instr[0] = (byte)opcode;
          for(int i=1; i<len; i++) {
              if(i==1)        instr[1] = possible_modregrm;
              else if(i==2)   instr[2] = possible_sib;
              else            instr[i] = (byte)random.nextInt();
          }
          return prefix + "0F" + bytesToHex(instr);
      }
  }
  
  
  /*
  class TestMOVSX_MOVZXSerializable extends TestBase implements Test, Serializable {
      TestMOVSX_MOVZXSerializable() {
          random = new Random(0);
      }
      
      Random random;
      int index;
      
      boolean d_b;
      
      //--------------------------------------------------------------------------
      @Override
      public int get_test_count() throws Exception {
          return 2000;
      }
      
      @Override
      public void init() throws Exception {
          d_b = random.nextBoolean();
      }
      
      @Override
      public boolean fini() throws Exception {
          return index < get_test_count();
      }
      
      int imm_len(boolean o16, int opcode) {
          return 0;
      }
      String prepare_instr() throws Exception {
          int opcodes[] = {
              0xB6,0xB7,0xBE,0xBF
          };
          
          boolean a16 = !d_b;
          boolean o16 = !d_b;
          String prefix = "";
          if(random.nextBoolean()) { prefix = "66" + prefix; o16 = !o16; }
          if(random.nextBoolean()) { prefix = "67" + prefix; a16 = !a16; }
          
          int opcode = opcodes[random.nextInt(opcodes.length)];
          boolean is_modregrm = true;
          
          byte possible_modregrm = (byte)random.nextInt();
          byte possible_sib      = (byte)random.nextInt();
        
          int len = (is_modregrm == false)? 1 : 1 + modregrm_len(a16, unsigned(possible_modregrm), unsigned(possible_sib));
  System.out.printf("[len: %d, d_b: %b, modregrm: %02x, sib: %02x]\n", len, d_b, unsigned(possible_modregrm), unsigned(possible_sib));
          //len += imm_len(o16, opcode);
  //System.out.println("[len final: " + len + "]");
  
          byte instr[] = new byte[len];
          instr[0] = (byte)opcode;
          for(int i=1; i<len; i++) {
              if(i==1)        instr[1] = possible_modregrm;
              else if(i==2)   instr[2] = possible_sib;
              else            instr[i] = (byte)random.nextInt();
          }
          
          return prefix + "0F" + bytesToHex(instr);
      }
  
      public String get_instructions() throws Exception {
          String instr = ""; 
          
          while(instr.length() < 2*15) {
              instr += prepare_instr();
          }
          instr = instr.substring(0, 2*15);
          
  System.out.println("[get_instructions: " + instr + "]");
          return instr;
      }
      @Override
      public byte get_memory(int address) throws Exception {
          return (byte)random.nextInt();
      }
      @Override
      public int eax() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_ebx() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_ecx() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_edx() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_esi() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_edi() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_ebp() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public int get_esp() throws Exception {
          return random.nextInt() & ((random.nextInt(3) == 0)? 0xFFFFFFFF : 0x00000FFF);
      }
      @Override
      public boolean get_cf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_pf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_af() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_zf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_sf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_tf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_if() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_df() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_of() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public int get_iopl() throws Exception {
          return random.nextInt(4);
      }
      @Override
      public boolean get_nt() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_rf() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_vm() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_ac() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public boolean get_id() throws Exception {
          return random.nextBoolean();
      }
      @Override
      public int get_cs_base() throws Exception {
          return 0;
      }
      @Override
      public int get_cs_limit() throws Exception {
          return 0x000FFFFF;
      }
      @Override
      public boolean get_cs_d_b() throws Exception {
          return d_b;
      }
      @Override
      public int get_ds_base() throws Exception {
          return 0;
      }
      @Override
      public int get_ds_limit() throws Exception {
          return 0x000FFFFF;
      }
      @Override
      public int get_es_base() throws Exception {
          return 0;
      }
      @Override
      public int get_es_limit() throws Exception {
          return 0x000FFFFF;
      }
      @Override
      public int get_fs_base() throws Exception {
          return 0;
      }
      @Override
      public int get_fs_limit() throws Exception {
          return 0x000FFFFF;
      }
      @Override
      public int get_gs_base() throws Exception {
          return 0;
      }
      @Override
      public int get_gs_limit() throws Exception {
          return 0x000FFFFF;
      }
      @Override
      public int get_ss_base() throws Exception {
          return 0;
      }
      @Override
      public int get_ss_limit() throws Exception {
          return 0x000FFFFF;
      }
  }
  */
  