public InstructionFactory()
{
_opCodeDecoder = new OpCodeDecoder();
_immediateDecoder = new ImmediateDecoder();
_jumpDecoder = new JumpDecoder();
_regimmDecoder = new RegimmDecoder();
_registerDecoder = new RegisterDecoder();
_mMIDecoder = new MMIDecoder();
_cOP0Decoder = new COP0Decoder();
_fPUDecoder = new FPUDecoder();
_cACHEDecoder = new CACHEDecoder();
}
public void Decode()
{
OpCodeDecoder decoder = new OpCodeDecoder();
this.DisplayState(this.state);
do
{
//Console.WriteLine("Enter to execute next instruction...");
//Console.ReadLine();
Console.WriteLine($"Addr\t${this.state.PC:X4} (#{this.state.PC})");
this.state.FetchOpCode();
Console.WriteLine($"OpCode\t${this.state.OpCode:X4}");
Console.WriteLine($"%{this.state.OpCode.ToBinary()}");
OpCode opcode = decoder.Decode(this.state);
if (opcode is Invalid)
{
throw new Exception("invalid opcode");
}
if (!this.disassembly.ContainsKey(opcode.Address))
{
this.disassembly.Add(opcode.Address, opcode);
}
this.DisplayOpCode(opcode);
this.DisplayState(this.state);
} while (this.running);
StringBuilder builder = new StringBuilder();
for (uint addr = 0x0000; addr < 0xFFFF; addr++)
{
builder.Append($"${addr:X4}");
if (this.disassembly.ContainsKey(addr))
{
builder.Append($"\t{this.disassembly[addr].Assembly}");
}
builder.AppendLine();
}
File.WriteAllText("output.asm", builder.ToString());
}
