public Interpreter(CPU cpu, Memory memory, Random random, IOutput output)
{
_cpu = cpu;
_memory = memory;
_random = random;
_output = output;
}
public void TestComparison()
{
// Arrange
var cpu = new CPU();
cpu.C = 0;
cpu.R[2] = 100;
cpu.R[3] = 200;
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 2,
MemoryAddress = 0,
OpCode = OpCodes.Compare,
SecondRegister = 3,
ThirdRegister = 0
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
Assert.AreEqual(-1, cpu.C);
}
public void TestHalt()
{
// Arrange
var cpu = new CPU();
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 0,
MemoryAddress = 0,
OpCode = OpCodes.Halt,
SecondRegister = 0,
ThirdRegister = 0
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
// Expected exception specified in method attribute
}
public void TestJumpIfGreater()
{
// Arrange
var cpu = new CPU();
cpu.C = 1;
cpu.PC = 0;
unchecked
{
cpu.R[0] = (int) 0x98513691;
}
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 0,
MemoryAddress = 0,
OpCode = OpCodes.JumpIfGreater,
SecondRegister = 0,
ThirdRegister = 0
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
Assert.AreEqual(0x98513691, cpu.PC);
}
public VirtualMachine(CPU cpu, Memory memory, Random random, IOutput output)
{
_cpu = cpu;
_memory = memory;
_interpreter = new Interpreter(_cpu, _memory, random, output);
}
public void TestStoreByMem()
{
// Arrange
var cpu = new CPU();
cpu.R[0] = 0x0A0B0C0D;
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 0,
MemoryAddress = 0x87654320,
OpCode = OpCodes.StoreByMem,
SecondRegister = 1,
ThirdRegister = 2
};
// Act
interpreter.ExecuteInstruction(instruction);
var valueInMemory = memory.ReadWord(0x87654320);
// Assert
Assert.AreEqual(0x0A0B0C0D, valueInMemory);
}
public void TestRandomizedAdd()
{
// Arrange
var cpu = new CPU();
cpu.R[0] = 0;
cpu.R[1] = 200;
cpu.R[2] = 300;
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 0,
MemoryAddress = 0,
OpCode = OpCodes.RandomizedAdd,
SecondRegister = 1,
ThirdRegister = 2
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
Assert.That(cpu.R[0], Is.EqualTo(500).Within(1).Percent);
}
public void TestMultiplication()
{
// Arrange
var cpu = new CPU();
cpu.R[0] = 0;
cpu.R[1] = 200;
cpu.R[2] = 300;
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 100,
FirstRegister = 0,
MemoryAddress = 0,
OpCode = OpCodes.Multiply,
SecondRegister = 1,
ThirdRegister = 2
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
Assert.AreEqual(60000, cpu.R[0]);
}
public void TestLogicalOrWithZeroProbability()
{
// Arrange
var cpu = new CPU();
cpu.R[10] = 0;
cpu.R[11] = 0x02040608;
cpu.R[12] = 0x10305070;
var random = new Random();
var memory = new Memory(random);
var consoleOutput = new ConsoleOutput();
var interpreter = new Interpreter(cpu, memory, random, consoleOutput);
var instruction = new Instruction
{
ExecutionPossibility = 0,
FirstRegister = 10,
MemoryAddress = 0,
OpCode = OpCodes.Or,
SecondRegister = 11,
ThirdRegister = 12
};
// Act
interpreter.ExecuteInstruction(instruction);
// Assert
Assert.AreEqual(0, cpu.R[10]);
}
private void ShowRegisters(CPU cpu)
{
textBox2.Text = "0x" + cpu.R[0].ToString("X8");
textBox3.Text = "0x" + cpu.R[1].ToString("X8");
textBox4.Text = "0x" + cpu.R[2].ToString("X8");
textBox5.Text = "0x" + cpu.R[3].ToString("X8");
textBox6.Text = "0x" + cpu.R[4].ToString("X8");
textBox7.Text = "0x" + cpu.R[5].ToString("X8");
textBox8.Text = "0x" + cpu.R[6].ToString("X8");
textBox9.Text = "0x" + cpu.R[7].ToString("X8");
textBox10.Text = "0x" + cpu.R[8].ToString("X8");
textBox11.Text = "0x" + cpu.R[9].ToString("X8");
textBox12.Text = "0x" + cpu.R[10].ToString("X8");
textBox13.Text = "0x" + cpu.R[11].ToString("X8");
textBox14.Text = "0x" + cpu.R[12].ToString("X8");
textBox15.Text = "0x" + cpu.R[13].ToString("X8");
textBox16.Text = "0x" + cpu.R[14].ToString("X8");
textBox17.Text = "0x" + cpu.R[15].ToString("X8");
textBox19.Text = "0x" + cpu.PC.ToString("X8");
textBox20.Text = _cpu.C.ToString();
}
private void NextStep(VirtualMachine vm, CPU cpu, Memory memory)
{
vm.NextStep();
ShowRegisters(cpu);
}
private void NewVirtualMachine()
{
_cpu = new CPU();
var random = new Random();
_memory = new Memory(random);
var guiOutput = new GuiOutput(textBox18);
_vm = new VirtualMachine(_cpu, _memory, random, guiOutput);
_vm.LoadFromFile(textBox1.Text);
_fileLoaded = true;
dataGridView1.DataSource = new BindingSource(_memory._dataStore, null);
dataGridView1.Columns[0].HeaderText = Resources.Address;
dataGridView1.Columns[1].HeaderText = Resources.Content;
textBox18.Text = "";
try
{
ShowRegisters(_cpu);
if (!checkBox1.Checked)
{
while (true)
{
NextStep(_vm, _cpu, _memory);
}
}
}
catch (VmHaltException)
{
MessageBox.Show(Resources.Virtual_machine_halted_execution);
}
}