Exemplo n.º 1
0
  public static List<ReilInstruction> translate(
      final StandardEnvironment environment, final Instruction instruction) {
    final List<ReilInstruction> instructions = new FilledList<ReilInstruction>();

    final int baseOffset = instruction.getAddress() * 0x100;
    int offset = baseOffset;

    final TranslationResult operandResult =
        OperandTranslator.translate(
            environment, offset, instruction.getOperand(), true, instruction);
    instructions.addAll(operandResult.getInstructions());

    offset = baseOffset + instructions.size();

    final String subResult = environment.getNextVariableString();
    final String truncatedResult = environment.getNextVariableString();

    instructions.add(
        ReilHelpers.createSub(
            offset++,
            OperandSize.BYTE,
            operandResult.getResultRegister(),
            OperandSize.BYTE,
            "1",
            OperandSize.WORD,
            subResult,
            instruction));
    instructions.add(
        ReilHelpers.createAnd(
            offset++,
            OperandSize.WORD,
            subResult,
            OperandSize.BYTE,
            "255",
            OperandSize.BYTE,
            truncatedResult,
            instruction));

    instructions.add(
        ReilHelpers.createStm(
            offset++,
            OperandSize.BYTE,
            truncatedResult,
            OperandSize.WORD,
            operandResult.getMemoryAddress(),
            instruction));

    instructions.addAll(
        FlagTranslator.translateZ(
            environment, offset + instructions.size(), truncatedResult, instruction));
    instructions.addAll(
        FlagTranslator.translateN(
            environment, offset + instructions.size(), truncatedResult, instruction));

    return instructions;
  }
Exemplo n.º 2
0
  public static List<ReilInstruction> translate(
      final StandardEnvironment environment, final Instruction instruction) {
    final List<ReilInstruction> instructions = new FilledList<ReilInstruction>();

    final int baseOffset = instruction.getAddress() * 0x100;
    int offset = baseOffset;

    String source;
    String target;

    if (instruction.getOperand() == null) {
      source = "A";
      target = "A";
    } else {
      final TranslationResult operandResult =
          OperandTranslator.translate(
              environment, offset, instruction.getOperand(), true, instruction);
      instructions.addAll(operandResult.getInstructions());

      offset = baseOffset + instructions.size();

      source = operandResult.getResultRegister();
      target = operandResult.getMemoryAddress();
    }

    final String shiftResult = environment.getNextVariableString();
    final String truncatedResult =
        instruction.getOperand() == null ? "A" : environment.getNextVariableString();

    instructions.add(
        ReilHelpers.createBsh(
            offset++,
            OperandSize.BYTE,
            source,
            OperandSize.BYTE,
            "1",
            OperandSize.WORD,
            shiftResult,
            instruction));
    instructions.add(
        ReilHelpers.createAnd(
            offset++,
            OperandSize.WORD,
            shiftResult,
            OperandSize.BYTE,
            "255",
            OperandSize.BYTE,
            truncatedResult,
            instruction));

    if (instruction.getOperand() != null) {
      instructions.add(
          ReilHelpers.createStm(
              offset++, OperandSize.BYTE, truncatedResult, OperandSize.WORD, target, instruction));
    }

    instructions.addAll(
        FlagTranslator.translateZ(
            environment, baseOffset + instructions.size(), truncatedResult, instruction));
    instructions.addAll(
        FlagTranslator.translateN(
            environment, baseOffset + instructions.size(), truncatedResult, instruction));
    instructions.addAll(
        FlagTranslator.translateC(
            environment, baseOffset + instructions.size(), shiftResult, instruction));

    return instructions;
  }