private void loadOPCodes(LuaFunction function)
{
// Go through all op codes
for (int i = 0; i < function.opcodesCount; i++)
{
// Make a new OP Code object
LuaOPCode opCode = new LuaOPCode();
// Read + asign all data
opCode.A = this.inputReader.ReadByte();
int cValue = this.inputReader.ReadByte();
byte flags = this.inputReader.ReadByte();
if (GetBit(flags, 0) == 1)
{
cValue += 256;
}
opCode.C = cValue;
this.inputReader.Seek(-1, SeekOrigin.Current);
opCode.B = this.inputReader.ReadByte() >> 1;
byte flagsB = this.inputReader.ReadByte();
if (GetBit(flagsB, 0) == 1)
{
opCode.B += 128;
}
/*if (GetBit(flagsB, 1) == 1)
* opCode.B += 256;*/
opCode.Bx = (opCode.B * 512) + opCode.C;
opCode.sBx = opCode.Bx - 65536 + 1;
this.inputReader.Seek(-1, SeekOrigin.Current);
opCode.OPCode = this.inputReader.ReadByte() >> 1;
// Add it to the list
function.OPCodes.Add(opCode);
}
}
private void disassembleOPCodes(LuaFunction function, int index)
{
// Add the parameter opcodes because they arent included
for (int i = 0; i < function.parameterCount; i++)
{
function.Registers[i] = "arg" + i;
function.DisassembleStrings.Add(String.Format("r({0}) = arg{0}",
i));
}
for (int i = 0; i < function.OPCodes.Count; i++)
{
LuaOPCode opCode = function.OPCodes[i];
try
{
switch (opCode.OPCode)
{
case 0x0: LuaStrings.ConnectWithDot(function, opCode); break;
case 0x1: LuaConditions.IfIsTrueFalse(function, opCode); break;
case 0x2:
case 0x4C: LuaFunctions.CallFunctionWithParameters(function, opCode, i); break;
case 0x16: LuaFunctions.CallFunctionWithParameters(function, opCode, i, true); break;
case 0x4: LuaConditions.IfIsEqual(function, opCode); break;
case 0x5: LuaConditions.IfIsEqualBackwards(function, opCode); break;
case 0x6: LuaRegisters.GlobalRegisterToRegister(function, opCode); break;
case 0x7: LuaRegisters.RegisterToRegister(function, opCode); break;
case 0x8: LuaStrings.ConnectWithColon(function, opCode); break;
case 0x9: LuaOperators.Return(function, opCode, i); break;
case 0xA: LuaTables.GetIndex(function, opCode); break;
case 0xD: LuaRegisters.BooleanToRegister(function, opCode); break;
case 0xE: LuaLoops.StartForEachLoop(function, opCode); break;
case 0xF: LuaStrings.SetField(function, opCode, i); break;
case 0x10: LuaTables.SetTable(function, opCode); break;
case 0x11: LuaTables.SetTableBackwards(function, opCode); break;
case 0x19: LuaRegisters.LocalConstantToRegister(function, opCode); break;
case 0x1A: LuaRegisters.NilToRegister(function, opCode); break;
case 0x1B: LuaRegisters.RegisterToGlobal(function, opCode); break;
case 0x1C: LuaConditions.SkipLines(function, opCode, i); break;
case 0x26: LuaFunctions.GetUpValue(function, opCode); break;
case 0x27: LuaOperators.SetupVal(function, opCode); break;
case 0x28: LuaOperators.Add(function, opCode); break;
case 0x29: LuaOperators.AddBackWards(function, opCode); break;
case 0x2A: LuaOperators.Subtract(function, opCode); break;
case 0x2B: LuaOperators.SubtractBackWards(function, opCode); break;
case 0x2C: LuaOperators.Multiply(function, opCode); break;
case 0x2D: LuaOperators.MultiplyBackWards(function, opCode); break;
case 0x2E: LuaOperators.Divide(function, opCode); break;
case 0x2F: LuaOperators.DivideBackWards(function, opCode); break;
case 0x30: LuaOperators.Modulo(function, opCode); break;
case 0x31: LuaOperators.ModuloBackWards(function, opCode); break;
case 0x32: LuaOperators.Power(function, opCode); break;
case 0x33: LuaOperators.PowerBackWards(function, opCode); break;
case 0x34: LuaTables.EmptyTable(function, opCode); break;
case 0x35: LuaOperators.UnaryMinus(function, opCode); break;
case 0x36: LuaConditions.Not(function, opCode); break;
case 0x37: LuaOperators.Length(function, opCode); break;
case 0x38: LuaConditions.LargerThan(function, opCode); break;
case 0x39: LuaConditions.LargerThanBackwards(function, opCode); break;
case 0x3A: LuaConditions.LargerOrEqualThan(function, opCode); break;
case 0x3B: LuaConditions.LargerOrEqualThanBackwards(function, opCode); break;
case 0x3C: LuaOperators.ShiftLeft(function, opCode); break;
case 0x3D: LuaOperators.ShiftLeftBackwards(function, opCode); break;
case 0x40: LuaOperators.BinaryAnd(function, opCode); break;
case 0x42: LuaOperators.BinaryOr(function, opCode); break;
case 0x44: LuaStrings.ConnectWithDoubleDot(function, opCode); break;
case 0x45: LuaOperators.TestSet(function, opCode); break;
case 0x46: LuaLoops.StartForLoop(function, opCode); break;
case 0x47: LuaLoops.EndForLoop(function, opCode, i); break;
case 0x48: LuaTables.SetList(function, opCode); break;
case 0x49: LuaOperators.Close(function, opCode); break;
case 0x4A: LuaFunctions.Closure(function, opCode); break;
case 0x4B: LuaOperators.VarArg(function, opCode); break;
case 0x4D: LuaFunctions.CallFunctionWithoutParameters(function, opCode); break;
case 0x4F: LuaConditions.IfIsTrueFalse(function, opCode); break;
case 0x50: LuaOperators.NotR1(function, opCode); break;
case 0x51: LuaStrings.ConnectWithDot(function, opCode); break;
case 0x52: LuaStrings.SetField(function, opCode, i); break;
case 0x54:
if (function.doingUpvals >= 0)
{
if (opCode.A == 1)
{
function.DisassembleStrings.Add(String.Format("r({0}).upval({1}) = r({2}) // {3}",
function.doingUpvals,
function.subFunctions[function.lastFunctionClosure].UpvalsStrings.Count,
opCode.C,
function.Registers[opCode.C]));
}
else if (opCode.A == 2)
{
function.DisassembleStrings.Add(String.Format("r({0}).upval({1}) = upval({2}) // {3}",
function.doingUpvals,
function.subFunctions[function.lastFunctionClosure].UpvalsStrings.Count,
opCode.C,
function.UpvalsStrings[opCode.C]));
}
else
{
Console.WriteLine("Trying to get to do upvalue on level " + opCode.A);
errors++;
}
}
else
{
function.DisassembleStrings.Add(String.Format("data({0}, {1}, {2}, {3})",
opCode.A,
opCode.C,
opCode.B,
opCode.OPCode));
}
break;
default:
function.DisassembleStrings.Add(String.Format("Unknown data(A:{0}, B:{1}, C:{2}, Bx:{3}, sBx:{4}, X:{5})",
opCode.A,
opCode.B,
opCode.C,
opCode.Bx,
opCode.sBx,
opCode.OPCode));
break;
}
if ((opCode.OPCode == 0xF || opCode.OPCode == 0x52) && function.getName() == "__INIT__")
{
if (this.game == Game.BlackOps4 && function.Registers[opCode.A].Length == 14)
{
if (function.Registers[opCode.A] == "LUI.createMenu")
{
fakeName = function.Strings[opCode.B].String;
}
}
else if (this.game == Game.BlackOps4 && function.Registers[opCode.A].Length > 3)
{
if ((function.Registers[opCode.A].Substring(0, 4) == "CoD." || function.Registers[opCode.A].Substring(0, 4) == "LUI." || function.Registers[opCode.A].Substring(0, 6) == "Lobby.") &&
(function.Strings[opCode.B].String == "new"))
{
fakeName = function.Registers[opCode.A].Substring(4);
}
}
else if (this.game == Game.BlackOps4 && function.Registers[opCode.A].Length < 4)
{
if ((function.Registers[opCode.A] == "CoD" || function.Registers[opCode.A] == "LUI") &&
(function.Registers[opCode.C] == "table0"))
{
fakeName = function.Strings[opCode.B].String;
}
}
}
if (function.doingUpvals >= 0)
{
if (opCode.OPCode == 0x4A)
{
continue;
}
if (opCode.OPCode == 0x54)
{
if (opCode.A == 1)
{
function.subFunctions[function.lastFunctionClosure].UpvalsStrings.Add(function.Registers[opCode.C]);
}
else if (opCode.A == 2)
{
function.subFunctions[function.lastFunctionClosure].UpvalsStrings.Add(function.UpvalsStrings[opCode.C]);
}
}
else
{
function.doingUpvals = -1;
}
}
}
catch
{
Console.WriteLine("Error occured while disassembling A: {3}, B: {4}, C: {5} OPcode: {0:X} at line {1} in function {2}", opCode.OPCode, i, function.getName(), opCode.A, opCode.B, opCode.C);
function.DisassembleStrings.Add(String.Format("Unknown data(A:{0}, B:{1}, C:{2}, Bx:{3}, sBx:{4}, X:{5})",
opCode.A,
opCode.B,
opCode.C,
opCode.Bx,
opCode.sBx,
opCode.OPCode));
errors++;
}
}
}
