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[Object] Add symbol attribute flags: ST_ThreadLocal, ST_Common, and ST_Undefined. Implement these completely for ELF.

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Rename ST_External to ST_Unknown, and slightly change its semantics. It now only indicates that the symbol's type
is unknown, not that the symbol is undefined. (For that, use ST_Undefined).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151696 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Meyer
2012-02-29 02:11:55 +00:00
parent 37c02bce27
commit 2c67727046
5 changed files with 38 additions and 16 deletions
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9
lib/Object/MachOObjectFile.cpp
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@ -278,7 +278,12 @@ error_code MachOObjectFile::getSymbolFlags(DataRefImpl DRI,
MachOType = Entry->Type;
}
// TODO: Correctly set SF_ThreadLocal and SF_Common.
Result = SymbolRef::SF_None;
if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeUndefined)
Result |= SymbolRef::SF_Undefined;
if (MachOFlags & macho::STF_StabsEntryMask)
Result |= SymbolRef::SF_FormatSpecific;
@ -337,7 +342,7 @@ error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
switch (n_type & MachO::NlistMaskType) {
case MachO::NListTypeUndefined :
Res = SymbolRef::ST_External;
Res = SymbolRef::ST_Unknown;
break;
case MachO::NListTypeSection :
Res = SymbolRef::ST_Function;
@ -554,7 +559,7 @@ error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
bool &Result) const {
SymbolRef::Type ST;
getSymbolType(Symb, ST);
if (ST == SymbolRef::ST_External) {
if (ST == SymbolRef::ST_Unknown) {
Result = false;
return object_error::success;
}