public void FlowControlOperationsTests_CALL_Success()
{
//init
// CALL address {F3}
// SP <- SP - 2
// mem[SP] <- PC
// PC <- address
ushort expectedSPVal = 98;
string addressOfCall = UnitConverter.ByteToBinary(33);
byte initialValueOfPC = 12;
micro.StackPointer = 100;
micro.ProgramCounter = initialValueOfPC;
// address: 2
MCInstructionF3 i1 = new MCInstructionF3(30, "11110", addressOfCall);
// execute
InstructionSetExe.ExecuteInstruction(i1, micro);
Assert.AreEqual(expectedSPVal, micro.StackPointer);
// expected data in Address: 33
Assert.AreEqual(UnitConverter.ByteToHex(initialValueOfPC), micro.ReadFromMemory(micro.StackPointer));
// program counter should be equal to 98
Assert.AreEqual(UnitConverter.BinaryToByte(addressOfCall), micro.ProgramCounter);
}
public void FlowControlOperationsTests_NEQ_AreNotEqual()
{
// NEQ Ra, Rb {F1} Cond <- R[Ra] != R[Rb]
string ra = "010"; // 2
string rb = "101"; // 5
string valInA = "00101101"; // 45
string valInB = "00101101"; // 45
bool result = false;
// set data in register
micro.MicroRegisters.SetRegisterValue(
UnitConverter.BinaryToByte(ra),
UnitConverter.BinaryToHex(valInA));
micro.MicroRegisters.SetRegisterValue(
UnitConverter.BinaryToByte(rb),
UnitConverter.BinaryToHex(valInB));
Console.WriteLine(micro.MicroRegisters);
Assert.AreEqual($"Registers[0,0,45,0,0,45,0,0]", micro.MicroRegisters.ToString());
// start instruction
MCInstructionF1 instructionF1 = new MCInstructionF1(4, "11100", ra, rb);
Console.WriteLine(instructionF1);
InstructionSetExe.ExecuteInstruction(instructionF1, micro);
Console.WriteLine(micro);
Assert.AreEqual(result, micro.ConditionalBit);
}
public MCInstructionF3(ushort decimalAddress, string opCodeBinary, string binaryAddress)
{
OpCode = UnitConverter.BinaryToByte(opCodeBinary);
AddressParamHex = UnitConverter.BinaryToHex(binaryAddress);
InstructionAddressDecimal = decimalAddress;
}
public MCInstructionF2(ushort decimalAddress, string opCodeBinary, string Ra, string binaryAddress)
{
OpCode = UnitConverter.BinaryToByte(opCodeBinary);
this.Ra = Ra == null ? (byte)8 : UnitConverter.BinaryToByte(Ra);
AddressParamHex = UnitConverter.BinaryToHex(binaryAddress);
InstructionAddressDecimal = decimalAddress;
}
public MCInstructionF1(ushort decimalAddress, string opCodeBinary, string Ra, string Rb = null, string Rc = null)
{
OpCode = (byte)UnitConverter.BinaryToInt(opCodeBinary);
this.Ra = Ra == null || Ra.Length == 0 ? (byte)0 : UnitConverter.BinaryToByte(Ra);
this.Rb = Rb == null ? (byte)0 : UnitConverter.BinaryToByte(Rb);
this.Rc = Rc == null ? (byte)0 : UnitConverter.BinaryToByte(Rc);
InstructionAddressDecimal = decimalAddress;
}
public void LogicOperationsTests_ROTAL_Success()
{
// ROTAL Ra, Rb, Rc {F1} R[Ra]<- R[Rb] rtl R[Rc]
string ra1 = "001"; // 1
string rb1 = "010"; // 2
string rc1 = "011"; // 3
string ra2 = "101"; // 5
string rb2 = "110"; // 6
string rc2 = "111"; // 7
MCInstructionF1 i1 = new MCInstructionF1(3, "10011", ra1, rb1, rc1);
MCInstructionF1 i2 = new MCInstructionF1(3, "10011", ra2, rb2, rc2);
string valInB1 = "10111100";
string valInC1 = UnitConverter.ByteToBinary(2);
string resultA1 = "11110010";
string valInB2 = "10011100";
string valInC2 = UnitConverter.ByteToBinary(2);
string resultA2 = "01110010";
// set data in register
////////////
/// Test 1
micro.MicroRegisters.SetRegisterValue(
(byte)UnitConverter.BinaryToInt(rb1),
UnitConverter.BinaryToHex(valInB1));
micro.MicroRegisters.SetRegisterValue(
(byte)UnitConverter.BinaryToInt(rc1),
UnitConverter.BinaryToHex(valInC1));
////////////
////////////
/// Test 2
micro.MicroRegisters.SetRegisterValue(
(byte)UnitConverter.BinaryToInt(rb2),
UnitConverter.BinaryToHex(valInB2));
micro.MicroRegisters.SetRegisterValue(
(byte)UnitConverter.BinaryToInt(rc2),
UnitConverter.BinaryToHex(valInC2));
///////////
Console.WriteLine(micro.MicroRegisters);
// Assert Registers
Assert.AreEqual("Registers[0,0,-68,2,0,0,-100,2]",
micro.MicroRegisters.ToString());
Console.WriteLine(i1);
Console.WriteLine(i2);
// execute instruction
InstructionSetExe.ExecuteInstruction(i1, micro);
InstructionSetExe.ExecuteInstruction(i2, micro);
Console.WriteLine(micro.MicroRegisters);
Console.WriteLine($"Expected1: {UnitConverter.BinaryToHex(resultA1)}," +
$"Actual: {micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra1))}");
Console.WriteLine($"Expected1: {UnitConverter.HexToBinary(micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra1)))}");
Console.WriteLine($"Expected2: {UnitConverter.BinaryToHex(resultA2)}," +
$"Actual: {micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra2))}");
Console.WriteLine($"Expected2: {UnitConverter.HexToBinary(micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra2)))}");
Assert.AreEqual(
UnitConverter.BinaryToHex(resultA1),
micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra1))
);
Assert.AreEqual(
UnitConverter.BinaryToHex(resultA2),
micro.MicroRegisters.GetRegisterValue(UnitConverter.BinaryToByte(ra2))
);
}
/// <summary>
/// get binary format of each instruction
/// </summary>
private string GetBinaryFormat(IFormatInstructions _operator)
{
int opcode = OperatorsInfo.GetOPCode(_operator.Operator);
switch (OperatorsInfo.GetInstructionFormat(_operator.Operator))
{
case EInstructionFormat.FORMAT_1:
{
int Rc = 0;
int Ra = 0;
int Rb = 0;
InstructionFormat1 format = (InstructionFormat1)_operator;
if (format.RegisterA != null)
{
Ra = (format.RegisterA?.ToString() == "") ? 0 : Convert.ToInt32(Regex.Replace(format.RegisterA.ToString(), @"[.\D+]", ""));
}
if (format.RegisterC != null)
{
Rb = (format.RegisterB?.ToString() == "") ? 0 : Convert.ToInt32(Regex.Replace(format.RegisterB.ToString(), @"[.\D+]", ""));
}
if (format.RegisterC != null)
{
Rc = (format.RegisterC.ToString() == "") ? 0 : Convert.ToInt32(Regex.Replace(format.RegisterC.ToString(), @"[.\D+]", ""));
}
return($"{Convert.ToString(opcode, 2).PadLeft(5, '0')}" +
$"{Convert.ToString(Ra, 2).PadLeft(3, '0')}" +
$"{Convert.ToString(Rb, 2).PadLeft(3, '0')}" +
$"{Convert.ToString(Rc, 2).PadLeft(3, '0')}00");
}
case EInstructionFormat.FORMAT_2:
{
InstructionFormat2 format = (InstructionFormat2)_operator;
int Ra = (format.RegisterA.ToString() == "") ? 0 : Convert.ToInt32(Regex.Replace(format.RegisterA.ToString(), @"[.\D+]", ""));
int constOrAddr;
if (constants.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = constants[format.ConstOrAddress.ToString()];
}
else if (variables.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = variables[format.ConstOrAddress.ToString()];
}
else if (labels.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = labels[format.ConstOrAddress.ToString()];
}
else
{
//check if the constant or address is a direct input
try
{
constOrAddr = UnitConverter.BinaryToByte(
UnitConverter.HexToBinary(
format.ConstOrAddress.ToString().Replace("#", "")
)
);
} catch (OverflowException)
{
//send error message (undefined variable)
AsmLogger.Error($"Overflow in instruction: {_operator}",
currentLine.ToString(),
$"Value '{format.ConstOrAddress}'");
return(null);
}
catch
{
//send error message (undefined variable)
AsmLogger.Error($"Variable not defined: {_operator}",
currentLine.ToString(),
"Variable called but never defined");
return(null);
}
}
return($"{UnitConverter.IntToBinary(opcode, defaultWidth: 5)}" +
$"{UnitConverter.IntToBinary(Ra, defaultWidth: 3)}" +
$"{UnitConverter.IntToBinary(constOrAddr, defaultWidth: 8)}");
}
case EInstructionFormat.FORMAT_3:
{
InstructionFormat3 format = (InstructionFormat3)_operator;
int constOrAddr = 0;
if (constants.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = constants[format.ConstOrAddress.ToString()];
}
else if (variables.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = variables[format.ConstOrAddress.ToString()];
}
else if (labels.ContainsKey(format.ConstOrAddress.ToString()))
{
constOrAddr = labels[format.ConstOrAddress.ToString()];
}
else
{
//check if the constant or address is a direct input
try
{
constOrAddr = Convert.ToInt32(format.ConstOrAddress.ToString().Replace("#", ""), 16);
}
catch
{
//send error message (undefined variable)
return(null);
}
}
return($"{Convert.ToString(opcode, 2).PadLeft(5, '0')}" +
$"{Convert.ToString(constOrAddr, 2).PadLeft(11, '0')}");
}
default:
{
throw new Exception("Token is not an instruction");
}
}
}