public override void Step(CInterpreter state)
{
if (Action != null)
{
Action(state);
}
state.Return();
}
public override void Step(CInterpreter state, ExecutionFrame frame)
{
var a = Action;
if (a != null)
{
a(state);
}
if (state.YieldedValue == 0)
{
state.Return();
}
}
public override void Step(CInterpreter state)
{
var frame = state.ActiveFrame;
var ip = frame.IP;
var done = false;
Value a = new Value();
Value b = new Value();
while (!done && ip < Instructions.Count && state.RemainingTime > 0)
{
var i = Instructions[ip];
//Debug.WriteLine (i);
switch (i.Op)
{
case OpCode.Dup:
state.Stack[state.SP] = state.Stack[state.SP - 1];
state.SP++;
ip++;
break;
case OpCode.Pop:
state.SP--;
ip++;
break;
case OpCode.Jump:
ip = i.Label.Index;
break;
case OpCode.BranchIfFalse:
a = state.Stack[state.SP - 1];
state.SP--;
if (a.UInt8Value == 0)
{
ip = i.Label.Index;
}
else
{
ip++;
}
break;
case OpCode.Call:
a = state.Stack[state.SP - 1];
state.SP--;
ip++;
state.Call(a);
done = true;
break;
case OpCode.Return:
state.Return();
done = true;
break;
case OpCode.LoadConstant:
state.Stack[state.SP] = i.X;
state.SP++;
ip++;
break;
case OpCode.LoadFramePointer:
state.Stack[state.SP] = frame.FP;
state.SP++;
ip++;
break;
case OpCode.LoadPointer:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = state.Stack[a.PointerValue];
ip++;
break;
case OpCode.StorePointer:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[a.PointerValue] = b;
state.SP -= 2;
ip++;
break;
case OpCode.OffsetPointer:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2].PointerValue = a.PointerValue + b.Int32Value;
state.SP--;
ip++;
break;
case OpCode.LoadGlobal:
state.Stack[state.SP] = state.Stack[i.X.Int32Value];
state.SP++;
ip++;
break;
case OpCode.StoreGlobal:
state.Stack[i.X.Int32Value] = state.Stack[state.SP - 1];
state.SP--;
ip++;
break;
case OpCode.LoadArg:
state.Stack[state.SP] = state.Stack[frame.FP + i.X.Int32Value];
state.SP++;
ip++;
break;
case OpCode.StoreArg:
state.Stack[frame.FP + i.X.Int32Value] = state.Stack[state.SP - 1];
state.SP--;
ip++;
break;
case OpCode.LoadLocal:
state.Stack[state.SP] = state.Stack[frame.FP + i.X.Int32Value];
state.SP++;
ip++;
break;
case OpCode.StoreLocal:
state.Stack[frame.FP + i.X.Int32Value] = state.Stack[state.SP - 1];
state.SP--;
ip++;
break;
case OpCode.AddInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a + (short)b);
state.SP--;
ip++;
break;
case OpCode.AddUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a + (ushort)b);
state.SP--;
ip++;
break;
case OpCode.AddInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a + (int)b);
state.SP--;
ip++;
break;
case OpCode.AddUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((uint)a + (uint)b);
state.SP--;
ip++;
break;
case OpCode.AddFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((float)a + (float)b);
state.SP--;
ip++;
break;
case OpCode.AddFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((double)a + (double)b);
state.SP--;
ip++;
break;
case OpCode.SubtractInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a - (short)b);
state.SP--;
ip++;
break;
case OpCode.SubtractUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a - (ushort)b);
state.SP--;
ip++;
break;
case OpCode.SubtractInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a - (int)b);
state.SP--;
ip++;
break;
case OpCode.SubtractUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((uint)a - (uint)b);
state.SP--;
ip++;
break;
case OpCode.SubtractFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((float)a - (float)b);
state.SP--;
ip++;
break;
case OpCode.SubtractFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((double)a - (double)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a * (short)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a * (ushort)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a * (int)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((uint)a * (uint)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a * (float)b);
state.SP--;
ip++;
break;
case OpCode.MultiplyFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a * (double)b);
state.SP--;
ip++;
break;
case OpCode.DivideInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a / (short)b);
state.SP--;
ip++;
break;
case OpCode.DivideUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a / (ushort)b);
state.SP--;
ip++;
break;
case OpCode.DivideInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a / (int)b);
state.SP--;
ip++;
break;
case OpCode.DivideUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((uint)a / (uint)b);
state.SP--;
ip++;
break;
case OpCode.DivideFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a / (float)b);
state.SP--;
ip++;
break;
case OpCode.DivideFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a / (double)b);
state.SP--;
ip++;
break;
case OpCode.ModuloInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a % (short)b);
state.SP--;
ip++;
break;
case OpCode.ModuloUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a % (ushort)b);
state.SP--;
ip++;
break;
case OpCode.ModuloInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a % (int)b);
state.SP--;
ip++;
break;
case OpCode.ModuloUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = (Value)((uint)a % (uint)b);
state.SP--;
ip++;
break;
case OpCode.ModuloFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a % (float)b);
state.SP--;
ip++;
break;
case OpCode.ModuloFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a % (double)b);
state.SP--;
ip++;
break;
case OpCode.EqualToInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a == (short)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.EqualToUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a == (ushort)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.EqualToInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a == (int)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.EqualToUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((uint)a == (uint)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.EqualToFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a == (float)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.EqualToFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a == (double)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a < (short)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a < (ushort)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a < (int)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((uint)a < (uint)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a < (float)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LessThanFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a < (double)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((short)a > (short)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanUInt16:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((ushort)a > (ushort)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((int)a > (int)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanUInt32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((uint)a > (uint)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanFloat32:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((float)a > (float)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.GreaterThanFloat64:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((double)a > (double)b) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.NegateInt16:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = -(short)a;
ip++;
break;
case OpCode.NegateUInt16:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = -(ushort)a;
ip++;
break;
case OpCode.NegateInt32:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = -(int)a;
ip++;
break;
case OpCode.NegateUInt32:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = (Value)(-(uint)a);
ip++;
break;
case OpCode.NegateFloat32:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = (Value)(-(float)a);
ip++;
break;
case OpCode.NegateFloat64:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = (Value)(-(double)a);
ip++;
break;
case OpCode.LogicalNot:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = (a.Int32Value == 0) ? 1 : 0;
ip++;
break;
case OpCode.LogicalAnd:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((a.Int32Value != 0) && (b.Int32Value != 0)) ? 1 : 0;
state.SP--;
ip++;
break;
case OpCode.LogicalOr:
a = state.Stack[state.SP - 2];
b = state.Stack[state.SP - 1];
state.Stack[state.SP - 2] = ((a.Int32Value != 0) || (b.Int32Value != 0)) ? 1 : 0;
state.SP--;
ip++;
break;
default:
a = state.Stack[state.SP - 1];
state.Stack[state.SP - 1] = Convert(a, i.Op);
ip++;
break;
}
state.RemainingTime -= state.CpuSpeed;
}
frame.IP = ip;
if (ip >= Instructions.Count)
{
throw new ExecutionException("Function '" + Name + "' never returned.");
}
}