public Op(int idx)
{
Index = idx;
Opcode = Opcode.Nop;
Operand1 = Operand.None;
Operand2 = Operand.None;
Length = 1;
Code = String.Empty;
PcMod = PcMod.Length;
}
public Op(int idx, Opcode opcode, Operand operand1, Operand operand2, int length, string code, PcMod pcMod)
{
Index = idx;
Opcode = opcode;
Operand1 = operand1;
Operand2 = operand2;
Length = length;
Code = code;
PcMod = pcMod;
}
public static List <Op> GenerateOpcodes(String path)
{
List <Op> ops = new List <Op>(256);
for (int ii = 0; ii < 256; ii++)
{
ops.Add(new Op(ii));
}
String[] lines = System.IO.File.ReadAllLines(path);
int nextIdx = 0;
for (int ii = 0; ii < lines.Length; ii++)
{
String line = lines[ii];
if (LineStartsWith_OP(line) == false)
{
continue;
}
Match match = Regex.Match(line, @"OP\(\s*(\w+)\s*,\s*(\w+)\s*,\s*Opf_(\w+)\s*,\s*Pcm_(\w+)\s*,\s*(\d)\s*,\s*(.*)", RegexOptions.IgnoreCase);
if (match.Success)
{
string name = match.Groups[1].Value;
string operands = match.Groups[2].Value;
string format = match.Groups[3].Value;
string pcmod = match.Groups[4].Value;
string time = match.Groups[5].Value;
string code = match.Groups[6].Value;
int idx = nextIdx++;
Opcode op = (Opcode)Enum.Parse(typeof(Opcode), name);
Operand operand1 = Operand.None, operand2 = Operand.None;
PcMod pcMod = pcmod == "Set" ? PcMod.Set : PcMod.Length;
int length = 1;
if (operands.Length == 1)
{
switch (operands[0])
{
case 'x': operand1 = Operand.X; break;
case 'y': operand1 = Operand.Y; break;
case 'z': operand1 = Operand.Z; break;
case 'w': operand1 = Operand.W; break;
case 'a': operand1 = Operand.A; break;
case 'i': operand1 = Operand.I; break;
case 'j': operand1 = Operand.J; break;
case 'A': operand1 = Operand.Address; break;
case 'W': operand1 = Operand.Address; break;
case 'B': operand1 = Operand.Byte; break;
case 'P': operand1 = Operand.Pc; break;
case 'F': operand1 = Operand.F; break;
}
}
else if (operands.Length == 2)
{
switch (operands[0])
{
case 'x': operand1 = Operand.X; break;
case 'y': operand1 = Operand.Y; break;
case 'z': operand1 = Operand.Z; break;
case 'w': operand1 = Operand.W; break;
case 'a': operand1 = Operand.A; break;
case 'i': operand1 = Operand.I; break;
case 'j': operand1 = Operand.J; break;
case 'W': operand1 = Operand.Address; break;
case 'A': operand1 = Operand.Address; break;
case 'B': operand1 = Operand.Byte; break;
case 'P': operand1 = Operand.Pc; break;
case 'F': operand1 = Operand.F; break;
}
switch (operands[1])
{
case 'x': operand2 = Operand.X; break;
case 'y': operand2 = Operand.Y; break;
case 'z': operand2 = Operand.Z; break;
case 'w': operand2 = Operand.W; break;
case 'i': operand2 = Operand.I; break;
case 'j': operand2 = Operand.J; break;
case 'a': operand2 = Operand.A; break;
case 'W': operand2 = Operand.Address; break;
case 'A': operand2 = Operand.Address; break;
case 'B': operand2 = Operand.Byte; break;
case 'P': operand2 = Operand.Pc; break;
case 'F': operand2 = Operand.F; break;
}
}
if (format == "Address" || format == "Word")
{
length = 3;
}
else if (format == "Byte")
{
length = 2;
}
ops[idx] = new Op(idx, op, operand1, operand2, length, code, pcMod);
}
else
{
Debug.LogErrorFormat("Unknown Syntax: {0}", line);
nextIdx++; // Reserve this, so don't break the chain.
}
}
return(ops);
}
