// NOTE: might be nice to identify the symbol's origin, e.g. which platform
// symbol file it was defined in. This could then be stored in a
// DisplayList line, for benefit of the Info panel.
/// <summary>
/// Internal base-object constructor, called by other constructors.
/// </summary>
private DefSymbol(string label, int value, Source source, Type type)
: base(label, value, source, type)
{
Debug.Assert(source == Source.Platform || source == Source.Project);
Debug.Assert(type == Type.ExternalAddr || type == Type.Constant);
Xrefs = new XrefSet();
}
/// <summary>
/// Generates an auto-label with a prefix string based on the XrefSet.
/// </summary>
/// <param name="addr">Address that label will be applied to.</param>
/// <param name="symbols">Symbol table, for uniqueness check.</param>
/// <param name="xset">Cross-references for this location.</param>
/// <returns>Newly-created, unique symbol.</returns>
public static Symbol GenerateAnnotatedLabel(int addr, SymbolTable symbols,
XrefSet xset, Style style)
{
Debug.Assert(xset != null);
Debug.Assert(style != Style.Simple);
RefTypes rtypes = RefTypes.None;
foreach (XrefSet.Xref xr in xset)
{
switch (xr.Type)
{
case XrefSet.XrefType.SubCallOp:
rtypes |= RefTypes.SubCall;
break;
case XrefSet.XrefType.BranchOp:
rtypes |= RefTypes.Branch;
break;
case XrefSet.XrefType.RefFromData:
rtypes |= RefTypes.DataRef;
break;
case XrefSet.XrefType.MemAccessOp:
switch (xr.AccType)
{
case Asm65.OpDef.MemoryEffect.Read:
rtypes |= RefTypes.Read;
break;
case Asm65.OpDef.MemoryEffect.Write:
rtypes |= RefTypes.Write;
break;
case Asm65.OpDef.MemoryEffect.ReadModifyWrite:
rtypes |= RefTypes.Read;
rtypes |= RefTypes.Write;
break;
case Asm65.OpDef.MemoryEffect.None:
case Asm65.OpDef.MemoryEffect.Unknown:
break;
default:
Debug.Assert(false);
break;
}
break;
default:
Debug.Assert(false);
break;
}
}
if (rtypes == RefTypes.None)
{
// unexpected
Debug.Assert(false);
return(GenerateUniqueForAddress(addr, symbols, "X_"));
}
StringBuilder sb = new StringBuilder(8);
for (int i = 0; i < TAGS.Length; i++)
{
if (((int)rtypes & (1 << i)) != 0)
{
sb.Append(TAGS[i]);
if (style == Style.Annotated)
{
break;
}
}
}
sb.Append('_');
return(GenerateUniqueForAddress(addr, symbols, sb.ToString()));
}
