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authorMichael J. Spencer <bigcheesegs@gmail.com>2011-10-17 23:54:22 +0000
committerMichael J. Spencer <bigcheesegs@gmail.com>2011-10-17 23:54:22 +0000
commitc38c36a8c44bd32bdfc2e48ab3e447f6dc1547bd (patch)
treeeba7a59ced4650d75a02fd34ec5f79877f57880e /lib/Object
parent0e752cb4b4eb5676aace4d9f3d7c2e2334c13777 (diff)
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Object: Add isSymbolWeak.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142316 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Object')
-rw-r--r--lib/Object/COFFObjectFile.cpp7
-rw-r--r--lib/Object/ELFObjectFile.cpp12
-rw-r--r--lib/Object/MachOObjectFile.cpp14
3 files changed, 33 insertions, 0 deletions
diff --git a/lib/Object/COFFObjectFile.cpp b/lib/Object/COFFObjectFile.cpp
index 6fdb263..0859bca 100644
--- a/lib/Object/COFFObjectFile.cpp
+++ b/lib/Object/COFFObjectFile.cpp
@@ -168,6 +168,13 @@ error_code COFFObjectFile::isSymbolGlobal(DataRefImpl Symb,
return object_error::success;
}
+error_code COFFObjectFile::isSymbolWeak(DataRefImpl Symb,
+ bool &Result) const {
+ const coff_symbol *symb = toSymb(Symb);
+ Result = (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL);
+ return object_error::success;
+}
+
error_code COFFObjectFile::getSymbolSize(DataRefImpl Symb,
uint64_t &Result) const {
// FIXME: Return the correct size. This requires looking at all the symbols
diff --git a/lib/Object/ELFObjectFile.cpp b/lib/Object/ELFObjectFile.cpp
index 7a992e2..a3c8248 100644
--- a/lib/Object/ELFObjectFile.cpp
+++ b/lib/Object/ELFObjectFile.cpp
@@ -331,6 +331,7 @@ protected:
virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const;
virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const;
+ virtual error_code isSymbolWeak(DataRefImpl Symb, bool &Res) const;
virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
@@ -643,6 +644,17 @@ error_code ELFObjectFile<target_endianness, is64Bits>
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
+ ::isSymbolWeak(DataRefImpl Symb,
+ bool &Result) const {
+ validateSymbol(Symb);
+ const Elf_Sym *symb = getSymbol(Symb);
+
+ Result = symb->getBinding() == ELF::STB_WEAK;
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
::isSymbolInternal(DataRefImpl Symb,
bool &Result) const {
validateSymbol(Symb);
diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp
index 55887c9..c757dd3 100644
--- a/lib/Object/MachOObjectFile.cpp
+++ b/lib/Object/MachOObjectFile.cpp
@@ -228,6 +228,20 @@ error_code MachOObjectFile::isSymbolGlobal(DataRefImpl Symb, bool &Res) const {
return object_error::success;
}
+error_code MachOObjectFile::isSymbolWeak(DataRefImpl Symb, bool &Res) const {
+
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(Symb, Entry);
+ Res = Entry->Flags & (MachO::NListDescWeakRef | MachO::NListDescWeakDef);
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(Symb, Entry);
+ Res = Entry->Flags & (MachO::NListDescWeakRef | MachO::NListDescWeakDef);
+ }
+ return object_error::success;
+}
+
error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
SymbolRef::Type &Res) const {
uint8_t n_type;