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[Object] Teach Object and llvm-objdump about ".hidden"

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Differential Revision:	http://reviews.llvm.org/D9416
Reviewed by:	rafael


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236279 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Davide Italiano 2015-04-30 23:08:53 +00:00
parent 509e9d9471
commit 0c54b7abc7
4 changed files with 12 additions and 2 deletions
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3
include/llvm/Object/ELFObjectFile.h
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@ -409,6 +409,9 @@ uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb) const {
if (isExportedToOtherDSO(ESym))
Result |= SymbolRef::SF_Exported;
if (ESym->getVisibility() == ELF::STV_HIDDEN)
Result |= SymbolRef::SF_Hidden;
return Result;
}

1
include/llvm/Object/SymbolicFile.h
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@ -93,6 +93,7 @@ public:
SF_FormatSpecific = 1U << 7, // Specific to the object file format
// (e.g. section symbols)
SF_Thumb = 1U << 8, // Thumb symbol in a 32-bit ARM binary
SF_Hidden = 1U << 9, // Symbol has hidden visibility
};
BasicSymbolRef() : OwningObject(nullptr) { }

2
test/Object/objdump-symbol-table.test
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@ -37,5 +37,7 @@ macho-i386: 00000000 *UND* 00000000 _puts
ELF-shared: shared-object-test.elf-i386: file format
ELF-shared: SYMBOL TABLE:
ELF-shared: 00000200 l F .text 00000003 local_func
ELF-shared: 000012b8 l *ABS* 00000000 .hidden _GLOBAL_OFFSET_TABLE_
ELF-shared: 00001248 l *ABS* 00000000 .hidden _DYNAMIC
ELF-shared: 000012c4 g .data 00000004 defined_sym
ELF-shared: 000001f0 g F .text 00000003 global_func

8
tools/llvm-objdump/llvm-objdump.cpp
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@ -629,6 +629,7 @@ void llvm::PrintSymbolTable(const ObjectFile *o) {
bool Weak = Flags & SymbolRef::SF_Weak;
bool Absolute = Flags & SymbolRef::SF_Absolute;
bool Common = Flags & SymbolRef::SF_Common;
bool Hidden = Flags & SymbolRef::SF_Hidden;
if (Common) {
uint32_t Alignment;
@ -683,8 +684,11 @@ void llvm::PrintSymbolTable(const ObjectFile *o) {
outs() << SectionName;
}
outs() << '\t'
<< format("%08" PRIx64 " ", Size)
<< Name
<< format("%08" PRIx64 " ", Size);
if (Hidden) {
outs() << ".hidden ";
}
outs() << Name
<< '\n';
}
}