internal static bool TryParse(string ASMLine, ASMLine Current, out ASMLine Out)
{
Out = null;
ASMLine = ASMLine.ToLower().Trim();
string[] split = null;
if (ASMLine.Length < 1)
{
return(false); //empty line
}
if (ASMLine[0] == ';')
{
return(false); //comment line, end of section
}
//section headers
if ((split = ASMLine.Split(':')).Length > 1 && Regex.IsMatch(split[0], "^[a-z_0-9]+$"))
{
return((Out = new SectionHeader(split[0])) != null);
}
split = SPR.Split(ASMLine);
switch (split[0])
{
case "nop":
return((Out = new NOP(Current)) != null);
case "movzx":
return((Out = new MOVZX(Current, split)) != null);
case "cmp":
return((Out = new CMP(Current, split)) != null);
case "jnb":
case "jbe":
case "jmp":
return((Out = new JUMP(Current, split)) != null);
case "retn":
return((Out = new RET(Current)) != null);
default:
throw new NotImplementedException($"Unable to parse instruction {split[0]}");
}
}
public override void Eval(ref char[] Stack, ref char EDX, ref char EAX, ref Stack <ASMLine> CallStack)
{
Action = SolveAction.Eval;
if (To.Contains("die")) //oshit
{
CallStack.Pop(); //this
JUMP PrevJump = null;
while ((PrevJump = CallStack.Peek() as JUMP) == null)
{
CallStack.Pop().Action = SolveAction.Eval;
if (CallStack.Count < 1)
{
Action = SolveAction.JumpStart;
CallStack.Push(this);
return;
}
}
PrevJump.TrySolve(ref Stack, ref CallStack);
}
else
{
var _cmp = (Previous as CMP); //hope this never turns out bad thonkers
if (Type == JumpType.jmp || (!_cmp.CF) == (Type == JumpType.jnb))
{
CallStack.Push(ASM_Map[To]);
}
else
{
CallStack.Push(Next);
}
}
}
private void TranslateStm(JUMP stm)
{
InstrList.Add(new Jump(new Label(stm.Targets.Head)));
}
void PrintStm(JUMP s, int d)
{
Indent(d); SayLn("JUMP("); PrintExp(s.Exp, d + 1); Say(")");
}
void PrintStm(JUMP s, int d)
{
Indent(d); SayLn("JUMP("); PrintExp(s.Exp, d + 1); Say(")");
}
private void TranslateStm(JUMP stm)
{
InstrList.Add(new Jump(new Label(stm.Targets.Head)));
}
