public override UInt32 GetGlobalRVA(String symbolName,
SymType symType)
{
DiaSymbol sy = df.GlobalSymbol.FindSymbol(symbolName);
if (sy == null && symType == SymType.GlobalFunction)
{
// Try looking for the symbol in public symbols,
// as assembly routines do not have normal
// global symbol table entries. We don't know
// how many parameters to use, so just guess
// at a few sizes.
for (int i = 0; i <= 16; i += 4)
{
// Non-fastcall.
sy = GetValidPublicSymbolEntry("_" + symbolName + "@" + i);
if (sy != null)
{
break;
}
// Fastcall.
sy = GetValidPublicSymbolEntry("@" + symbolName + "@" + i);
if (sy != null)
{
break;
}
}
}
return(GetSymbolRva(sy, symbolName, "Symbol"));
}
private UInt32 GetSymbolRva(DiaSymbol sy, String symbolName, String typeName)
{
if (sy == null)
{
// Ideally this would throw an exception and
// cause the whole process to fail but
// currently it's too complicated to get
// all the ifdef'ing right for all the
// mix of debug/checked/free multiplied by
// x86/AMD64/IA64/etc.
return(UInt32.MaxValue);
}
if (sy.Address > UInt32.MaxValue)
{
throw new InvalidOperationException(
typeName + " symbol " + symbolName + " overflows UInt32"
);
}
return((UInt32)sy.Address);
}