/// <summary>
/// Adds a Branch to the Tree
/// </summary>
/// <param name="branch"></param>
public void AddBranch( CommandTree branch)
{
if( branch != null )
{
mBranches.Add(branch);
}
}
public void Append( CommandTree cmd )
{
mMainExecutionPath += cmd.ToString();
}
public CommandTree GetPattern( int location, CommandTree cmdTree )
{
byte command = MainForm.TheROM[location];
ArrayList list = Commands[command] as ArrayList;
int lo, hi, offset=0, offset1=0;
string currentCmd = "";
if( list != null )
{
if( cmdTree.ToString() == "" )
{
cmdTree.Append( string.Format("{0:x6};",location) );
}
currentCmd += string.Format("{0:x2}:",command); // command hex
currentCmd += list[0].ToString(); // name or command
int args = Int32.Parse(list[1].ToString());
if( IsConditionalGotoCommand( command ) )
{
lo = MainForm.TheROM[location+1];
hi = MainForm.TheROM[location+2];
offset1 = lo + (hi * 256) - 0x2000 + 0x10;
CommandTree tree = new CommandTree("");
cmdTree.AddBranch( GetPattern( offset1, tree));
}
else
{
switch( args )
{
case 1:
currentCmd += string.Format("({0:x2});",MainForm.TheROM[location+1]);
break;
case 2:
if( list[2].ToString() == "lo")
{
lo = MainForm.TheROM[location+1];
hi = MainForm.TheROM[location+2];
offset = lo + (hi * 256) - 0x2000 + 0x10;
//ret += string.Format("({0:x2}{1:x2});",hi,lo );
currentCmd += string.Format("({0:x4});",offset );
}
else
{
currentCmd += string.Format("({0:x2},{1:x2});",
MainForm.TheROM[location+1],
MainForm.TheROM[location+2]);
}
break;
case 3:
if( list[2].ToString() == "lo")
{
lo = MainForm.TheROM[location+1];
hi = MainForm.TheROM[location+2];
offset = lo + (hi * 256) - 0x2000 + 0x10;
//ret += string.Format("({0:x2}{1:x2}, {2:x2});",
// hi,
// lo,
// MainForm.TheROM[location+2] );
currentCmd += string.Format("({0:x4}, {1:x2});",
offset,
MainForm.TheROM[location+2] );
}
else
{
currentCmd += string.Format("({0:x2}, {1:x2}, {2:x2});",
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3] );
}
break;
case 4:
lo = MainForm.TheROM[location+3];
hi = MainForm.TheROM[location+4];
offset1 = lo + (hi * 256) + 0x10; /* Calculate the offset */
/*ret = string.Format("{0:x2}-Pass({1:x2} {2:x2}) Branch-{3:x2}{4:x2}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4]);*/
currentCmd += string.Format("{0:x2}-Pass({1:x2} {2:x2}) Branch-{3:x4}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
offset);
CommandTree t1 = new CommandTree("");
t1 = GetPattern(offset1, t1);
cmdTree.AddBranch(t1);
break;
case 5:
lo = MainForm.TheROM[location+4];
hi = MainForm.TheROM[location+5];
offset1 = lo + (hi * 256) + 0x10; /* Calculate the offset */
/*ret = string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} ) Branch-{4:x2}{5:x2}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4],
MainForm.TheROM[location+5]);*/
currentCmd += string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} ) Branch-{4:x4}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
offset);
CommandTree t2 = new CommandTree("");
t2 = GetPattern(offset1, t2);
cmdTree.AddBranch(t2);
break;
case 6:
lo = MainForm.TheROM[location+5];
hi = MainForm.TheROM[location+6];
offset1 = lo + (hi * 256) + 0x10; /* Calculate the offset */
/*ret = string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} {4:x2} ) Branch-{5:x2}{6:x2}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4],
MainForm.TheROM[location+5],
MainForm.TheROM[location+6]);*/
currentCmd += string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} {4:x2} ) Branch-{5:x4}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4],
offset);
CommandTree t3 = new CommandTree("");
t3 = GetPattern(offset1, t3);
cmdTree.AddBranch(t3);
break;
case 7:
lo = MainForm.TheROM[location+6];
hi = MainForm.TheROM[location+7];
offset1 = lo + (hi * 0x100) + 0x10; /* Calculate the offset */
/*ret = string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} {4:x2} {5:x2}) Branch-{6:x2}{7:x2}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4],
MainForm.TheROM[location+5],
MainForm.TheROM[location+6],
MainForm.TheROM[location+7]);*/
currentCmd += string.Format("{0:x2}-Pass({1:x2} {2:x2} {3:x2} {4:x2} {5:x2}) Branch-{6:x4}:",
command,
MainForm.TheROM[location+1],
MainForm.TheROM[location+2],
MainForm.TheROM[location+3],
MainForm.TheROM[location+4],
MainForm.TheROM[location+5],
offset);
CommandTree t4 = new CommandTree("");
t4 = GetPattern(offset1, t4);
cmdTree.AddBranch(t4);
break;
} // end switch
}
if( command == 0xFE )
{
byte arg = MainForm.TheROM[location+1];
if( arg >= 0x80 )
{
//byte back = (byte)~arg;
byte back = (byte)(0xFF - arg +1);
currentCmd += string.Format("FE:LoopBack({0:x2});",back);
offset = location - back;
}
else
{
// still needs work
currentCmd += string.Format("FE:LoopForward({0:x2});",arg);
offset = location+arg;
}
}
int locNext = 0;
if( offset == 0 )
locNext = 1 + location + args;
else
locNext = offset;
// not a goto, not a loopback/loopforward
if( command == 0xFE )
{
cmdTree.Append(currentCmd);
cmdTree = GetPattern( locNext, cmdTree );
}
else if( !InfiniteLoop(cmdTree.MainExecutionPath , locNext) )
{
cmdTree.Append(currentCmd);
cmdTree = GetPattern(locNext, cmdTree );
}
//return ret;
}
return cmdTree;
}
