public LuaVM(Stream fs)
{
reader = new BinaryReader(fs);
byte[] signature = reader.ReadBytes(LUA_SIGNATURE.Length);
for (int i = 0; i < signature.Length; i++)
{
if (signature[i] != LUA_SIGNATURE[i])
{
throw new Exception("lua magic mismatch");
}
}
byte version = reader.ReadByte();
if (version != 0x50)
{
throw new Exception("lua version mismatch");
}
config = ReadLuaVMConfig();
//todo: validate remote vm config against local config
if (ReadLuaNumber() != LUA_TEST_NUM)
{
throw new Exception("lua number mismatch");
}
LoadFunction();
}
private LuaVMConfig ReadLuaVMConfig()
{
LuaVMConfig config = new LuaVMConfig()
{
littleEndian = ReadByte(),
intSz = ReadByte(),
sizeTSz = ReadByte(),
instrSz = ReadByte(),
opSz = ReadByte(),
//register sizes for A,B,C
opASz = ReadByte(),
opBSz = ReadByte(),
opCSz = ReadByte(),
luaNumSz = ReadByte(),
};
return(config);
}
