public static List <TpmNamedConstant> GetBifieldElements(TpmBitfield bf)
{
var elements = new List <TpmNamedConstant>();
foreach (var b in bf.Elements)
{
if (b.StartBit == b.EndBit)
{
AddBitfieldElt(elements, b.TranslatedName, 1 << b.StartBit, b.Comment, b.OldStyleName);
}
else // multibit members of a bitfield
{
string typeName = b.Name;
if (TpmTypes.Contains(typeName))
{
// Type typeName defines allowed values for this multi-bit field
var e = TpmTypes.Lookup(typeName) as TpmEnum;
if (e != null)
{
foreach (var v in e.Members)
{
AddBitfieldElt(elements, v.Name, v.NumericValue << b.EndBit, v.Comment);
}
}
}
// Multi-bit bitfield 'name' is additionally represented by several enumerators:
// name_BIT_MASK - bit mask selecting all bits of the field
// name_BIT_OFFSET - offset of the field's low order bit
// name_BIT_LENGTH - number of bits in the field
string nameBase = b.Name.Contains("_") ? TargetLang.NameToDotNet(b.Name) : b.Name;
int len = b.StartBit - b.EndBit + 1;
var suff = TargetLang.DotNet ? new string[] { "BitMask", "BitOffset", "BitLength" }
: new string[] { "_BIT_MASK", "_BIT_OFFSET", "_BIT_LENGTH" };
AddBitfieldElt(elements, nameBase + suff[0], ((1 << len) - 1) << b.EndBit, b.Comment, null, true);
AddBitfieldElt(elements, nameBase + suff[1], b.EndBit, null, null, true);
AddBitfieldElt(elements, nameBase + suff[2], len, null, null, true);
if (TargetLang.DotNet && bf.Name == "LocalityAttr")
{
// For backward compatibility
for (int i = 0; i < len; ++i)
{
AddBitfieldElt(elements, $"{nameBase}Bit{i}", 1 << (b.EndBit + i), "", null, true);
}
}
} // multibit members of a bitfield
}
return(elements);
}
void GenBitfield(TpmBitfield bf)
{
GenEnum(bf, GetBifieldElements(bf));
}
void GenBitfield(TpmBitfield bf)
{
GenEnum(bf, GetBifieldElements(bf), bf.GetSize());
}