public void MarkSymbolReference(Symbol symbol, SymbolReferenceType type)
{
References.Add(new SymbolReference(this)
{
Symbol = symbol, Type = type
});
}
public int GetImmediate(string arg, SymbolReferenceType type)
{
int val = 0;
if (arg.StartsWith("0x"))
{
val = ushort.Parse(arg.Substring(2), System.Globalization.NumberStyles.AllowHexSpecifier);
}
else if (!int.TryParse(arg, out val))
{
// Add a symbol reference
MarkSymbolReference(arg, type);
}
if (type == SymbolReferenceType.ImmediateLower)
{
return((int)((ushort)val));
}
else if (type == SymbolReferenceType.ImmediateUpper)
{
return((int)((ushort)(val >> 16)));
}
else
{
return(val);
}
}
public void MarkSymbolReference(string symbol, SymbolReferenceType type)
{
// The SymbolReference constructor automatically
// initializes the section and the offset.
References.Add(new SymbolReference(this)
{
Name = symbol, Type = type
});
}
public void EmitInstruction(string name, string symbol, SymbolReferenceType type, params int[] args)
{
MarkSymbolReference(symbol, type);
var def = InstructionSet.Instructions[name];
var ins = Instruction.FromDefinition(def, args);
CurrentSection.Stream.Write(BitConverter.GetBytes(ins.Encode()), 0, 4);
CurrentSection.Offset += 4;
}
