static void Main(string[] args)
{
MipsMachine vm = new MipsMachine();
MipsToBinary converter = new MipsToBinary();
Prologue();
// interactive
while (true)
{
bool isLittleEndian = true;
uint address;
uint length4Bytes = 1;
Console.Write("> ");
string[] input = Console.ReadLine().Split();
switch (input[0])
{
case "c": // continue
Continue(vm);
break;
case "s": // go to next step
Step(vm);
break;
case "r": // read register
// `r t0`
RegisterType reg = (RegisterType)Enum.Parse(typeof(RegisterType), input[1]);
if (input.Length >= 3)
{
bool.TryParse(input[2], out isLittleEndian);
}
Console.WriteLine($"0x{vm.QueryRegister(reg).ToHexString(isLittleEndian ? Endian.LittleEndian : Endian.BigEndian)}");
break;
case "d": // read RAM
// `d <address> <length/4Bytes> <0:little-endian/1:big-endian>`
try
{
address = (uint)new System.ComponentModel.UInt32Converter().ConvertFromString(input[1]);
}
catch (Exception)
{
Console.WriteLine("[Error] Invalid Address");
continue;
}
if (input.Length >= 3)
{
uint.TryParse(input[2], out length4Bytes);
}
if (input.Length >= 4)
{
bool.TryParse(input[3], out isLittleEndian);
}
Console.WriteLine($"0x {vm.QueryRamAsHex(address, length4Bytes, isLittleEndian ? Endian.LittleEndian : Endian.BigEndian)}");
break;
case "u": // read RAM as instructions
// binarty -> MIPS asm
// `u <address> <length/4Bytes>`
try
{
address = (uint)new System.ComponentModel.UInt32Converter().ConvertFromString(input[1]);
}
catch (Exception)
{
Console.WriteLine("[Error] Invalid Address");
continue;
}
if (input.Length >= 3)
{
uint.TryParse(input[2], out length4Bytes);
}
Console.WriteLine(vm.GetMipsString(address, length4Bytes));
break;
case "a": // write MIPS codes to RAM
// `a`
// `a <path to asm>`
string mips;
if (input.Length > 1)
{
mips = File.ReadAllText(input[1]);
}
else
{
mips = AskForMipsCode();
}
ProgramInfo prog = converter.ParseMips(mips);
MachineCodePack machineCode = prog.ToMachineCode();
vm.Reset(machineCode);
// print the next instructions
PrintNextInstructions(vm, 16);
// do not log the changes caused by program loading
vm.CleanLog();
break;
case "h": // write hex to RAM
// `h <path to hex>`
WriteRawTextCodeToRam(input[1], vm, CodingSystem.Hex);
break;
case "b": // write binary to RAM
// `b <path to binary>`
WriteRawTextCodeToRam(input[1], vm, CodingSystem.Binary);
break;
}
}
}
