public void Decompile(String InputFilename, String OutputFilename)
{
FileStream InFileStream;
StreamWriter OutFileStream;
try
{
InFileStream = new FileStream(InputFilename, FileMode.Open);
}
catch
{
Console.WriteLine(String.Format("Cannot open intput file: {0}", InputFilename));
return;
}
try
{
OutFileStream = new StreamWriter(OutputFilename, false, System.Text.Encoding.ASCII);
}
catch
{
Console.WriteLine(String.Format("Cannot open output file: {0}", OutputFilename));
return;
}
Console.WriteLine(String.Format("Decompiling: {0}", InputFilename));
InitParameter();
///////////////////////////////
int ByteFromFile;
string Mnemonic;
bool HaveNextByte = false;
OpCodes OpCodes = new FocalDecompiler.OpCodes();
XRomCodes XRomCodes = new XRomCodes(false);
string exeFilename = Assembly.GetExecutingAssembly().Location;
XRomCodes.AddMnemonicsFromFile(Path.Combine(Path.GetDirectoryName(exeFilename), "XRomCodes.txt"));
ByteFromFile = InFileStream.ReadByte();
int[] dump = new int[50];
int dumpidx = 0;
try
{
while (ByteFromFile != -1)
{
dumpidx = 0;
dump[dumpidx++] = ByteFromFile;
OpCodes.OpCode OpCode = OpCodes.GetOpCodeInfo(ByteFromFile);
switch (OpCode.FctType)
{
case FocalDecompiler.OpCodes.FctType.Null:
break;
case FocalDecompiler.OpCodes.FctType.NoParam:
OutFileStream.WriteLine(OpCode.Mnemonic);
break;
case FocalDecompiler.OpCodes.FctType.R_0_9:
{
String Ind = String.Empty;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if ((ByteFromFile & 0x80) != 0)
{
ByteFromFile &= 0x7f;
Ind = "IND ";
}
if (ByteFromFile <= 101)
{
OutFileStream.WriteLine("{0,-4} {1}{2}", OpCode.Mnemonic, Ind, ByteFromFile.ToString("D1"));
}
else
{
OutFileStream.WriteLine("{0,-4} {1}{2}", OpCode.Mnemonic, Ind, StackParamter[(short)ByteFromFile]);
}
break;
}
case FocalDecompiler.OpCodes.FctType.R_0_55:
case FocalDecompiler.OpCodes.FctType.R_0_101_Stack:
{
String Ind = String.Empty;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if ((ByteFromFile & 0x80) != 0)
{
ByteFromFile &= 0x7f;
Ind = "IND ";
}
if (ByteFromFile <= 101)
{
OutFileStream.WriteLine("{0,-4} {1}{2}", OpCode.Mnemonic, Ind, ByteFromFile.ToString("D2"));
}
else
{
OutFileStream.WriteLine("{0,-4} {1}{2}", OpCode.Mnemonic, Ind, StackParamter[(short)ByteFromFile]);
}
break;
}
case FocalDecompiler.OpCodes.FctType.R_0_15:
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, (ByteFromFile & 0x0F).ToString("D2"));
break;
case FocalDecompiler.OpCodes.FctType.R_0_14:
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ((ByteFromFile & 0x0F) - 1).ToString("D2"));
break;
case FocalDecompiler.OpCodes.FctType.GTO_0_14:
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ((ByteFromFile & 0x0F) - 1).ToString("D2"));
ByteFromFile = InFileStream.ReadByte();
break;
case FocalDecompiler.OpCodes.FctType.R_0_99_A_J:
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
ByteFromFile &= 0x7F;
if (ByteFromFile <= 101)
{
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ByteFromFile.ToString("D2"));
}
else
{
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ShortLabelParamter[(short)ByteFromFile]);
}
break;
case FocalDecompiler.OpCodes.FctType.LBL_0_99_A_J:
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if (ByteFromFile <= 101)
{
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ByteFromFile.ToString("D2"));
}
else
{
OutFileStream.WriteLine("{0,-4} {1}", OpCode.Mnemonic, ShortLabelParamter[(short)ByteFromFile]);
}
break;
case FocalDecompiler.OpCodes.FctType.GTO_XEQ_Ind:
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if ((ByteFromFile & 0x80) == 0)
{
Mnemonic = "GTO";
}
else
{
Mnemonic = "XEQ";
}
ByteFromFile &= 0x7f;
if (ByteFromFile <= 101)
{
OutFileStream.WriteLine("{0,-4} IND {1}", Mnemonic, ByteFromFile.ToString("D2"));
}
else
{
OutFileStream.WriteLine("{0,-4} IND {1}", Mnemonic, StackParamter[(short)ByteFromFile]);
}
break;
case FocalDecompiler.OpCodes.FctType.XRom:
{
int Byte2;
int Module;
int Function;
XRomCode XRomCode;
Byte2 = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
Module = ((ByteFromFile & 0x07) << 2) | (Byte2 >> 6);
Function = Byte2 & 0x3f;
if (XRomCodes.FindFunction(Module, Function, out XRomCode))
{
OutFileStream.WriteLine("{0}", XRomCode.Mnemonic);
}
else
{
OutFileStream.WriteLine("{0,-4} {1},{2}", OpCode.Mnemonic, Module.ToString("D2"), Function.ToString("D2"));
}
break;
}
case FocalDecompiler.OpCodes.FctType.LabelAlpha:
{
int Len;
String Label = String.Empty;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
Len = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if ((Len & 0xf0) != 0)
{
Len -= 0xf1;
while (Len-- > 0)
{
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
Label += (char)ByteFromFile;
}
OutFileStream.WriteLine("{0,-4} \"{1}\"", OpCode.Mnemonic, Label);
}
else
{
OutFileStream.WriteLine("END");
}
break;
}
case FocalDecompiler.OpCodes.FctType.GTO_XEQ_Alpha:
{
int Len;
String Label = String.Empty;
Len = InFileStream.ReadByte() - 0xf0;
dump[dumpidx++] = ByteFromFile;
while (Len-- > 0)
{
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
Label += (char)ByteFromFile;
}
OutFileStream.WriteLine("{0,-4} \"{1}\"", OpCode.Mnemonic, Label);
break;
}
case FocalDecompiler.OpCodes.FctType.Alpha:
{
int Len;
String Label = String.Empty;
String Append = String.Empty;
Len = ByteFromFile & 0x0f;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
if (ByteFromFile == 0x7f) //append
{
Append = ">";
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
Len--;
}
while (Len-- > 0)
{
Label += (char)ByteFromFile;
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
}
OutFileStream.WriteLine("{0}\"{1}\"", Append, Label);
HaveNextByte = true;
break;
}
case FocalDecompiler.OpCodes.FctType.Number:
do
{
if (ByteFromFile == 0x1b)
{
OutFileStream.Write("E");
}
else
if (ByteFromFile == 0x1a)
{
OutFileStream.Write(".");
}
else
if (ByteFromFile == 0x1c)
{
OutFileStream.Write("-");
}
else
{
OutFileStream.Write("{0}", (char)(ByteFromFile - 0x10 + '0'));
}
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
OpCode = OpCodes.GetOpCodeInfo(ByteFromFile);
}while (OpCode.FctType == FocalDecompiler.OpCodes.FctType.Number);
OutFileStream.WriteLine();
HaveNextByte = true;
break;
default:
OutFileStream.WriteLine("? {0}", ByteFromFile.ToString("X2"));
break;
}
if (!HaveNextByte)
{
ByteFromFile = InFileStream.ReadByte();
dump[dumpidx++] = ByteFromFile;
}
HaveNextByte = false;
}
}
catch (Exception e)
{
Console.Write("Exception caught on statement: ");
for (int i = 0; i < dumpidx; i++)
{
Console.Write("{0} ", dump[i]);
}
Console.WriteLine();
}
InFileStream.Close();
OutFileStream.Close();
}
