forked from OSchip/llvm-project
Add a ELFSectionRef class and use it to expose getSectionType.
llvm-svn: 240778
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2fa80cc5fd
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@ -40,12 +40,14 @@ class ELFSymbolRef;
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class ELFObjectFileBase : public ObjectFile {
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friend class ELFSymbolRef;
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friend class ELFSectionRef;
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protected:
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ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source);
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virtual uint64_t getSymbolSize(DataRefImpl Symb) const = 0;
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virtual uint8_t getSymbolOther(DataRefImpl Symb) const = 0;
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virtual uint32_t getSectionType(DataRefImpl Sec) const = 0;
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public:
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virtual ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
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@ -58,13 +60,27 @@ public:
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virtual elf_symbol_iterator_range getDynamicSymbolIterators() const = 0;
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virtual uint64_t getSectionFlags(SectionRef Sec) const = 0;
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virtual uint32_t getSectionType(SectionRef Sec) const = 0;
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elf_symbol_iterator_range symbols() const;
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static inline bool classof(const Binary *v) { return v->isELF(); }
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};
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class ELFSectionRef : public SectionRef {
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public:
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ELFSectionRef(const SectionRef &B) : SectionRef(B) {
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assert(isa<ELFObjectFileBase>(SectionRef::getObject()));
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}
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const ELFObjectFileBase *getObject() const {
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return cast<ELFObjectFileBase>(SectionRef::getObject());
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}
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uint32_t getType() const {
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return getObject()->getSectionType(getRawDataRefImpl());
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}
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};
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class ELFSymbolRef : public SymbolRef {
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public:
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ELFSymbolRef(const SymbolRef &B) : SymbolRef(B) {
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@ -170,6 +186,7 @@ protected:
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getRelocationTypeName(DataRefImpl Rel,
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SmallVectorImpl<char> &Result) const override;
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uint32_t getSectionType(DataRefImpl Sec) const override;
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uint64_t getROffset(DataRefImpl Rel) const;
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StringRef getRelocationTypeName(uint32_t Type) const;
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@ -263,7 +280,6 @@ public:
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bool hasRelocationAddend(DataRefImpl Rel) const override;
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uint64_t getSectionFlags(SectionRef Sec) const override;
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uint32_t getSectionType(SectionRef Sec) const override;
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uint8_t getBytesInAddress() const override;
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StringRef getFileFormatName() const override;
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@ -315,9 +331,8 @@ uint64_t ELFObjectFile<ELFT>::getSectionFlags(SectionRef Sec) const {
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}
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template <class ELFT>
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uint32_t ELFObjectFile<ELFT>::getSectionType(SectionRef Sec) const {
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DataRefImpl DRI = Sec.getRawDataRefImpl();
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return toELFShdrIter(DRI)->sh_type;
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uint32_t ELFObjectFile<ELFT>::getSectionType(DataRefImpl Sec) const {
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return toELFShdrIter(Sec)->sh_type;
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}
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template <class ELFT>
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@ -306,10 +306,10 @@ static bool isReadOnlyData(const SectionRef &Section) {
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return false;
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}
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static bool isZeroInit(const SectionRef &Section) {
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static bool isZeroInit(const SectionRef Section) {
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const ObjectFile *Obj = Section.getObject();
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if (auto *ELFObj = dyn_cast<object::ELFObjectFileBase>(Obj))
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return ELFObj->getSectionType(Section) == ELF::SHT_NOBITS;
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if (isa<object::ELFObjectFileBase>(Obj))
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return ELFSectionRef(Section).getType() == ELF::SHT_NOBITS;
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if (auto *COFFObj = dyn_cast<object::COFFObjectFile>(Obj))
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return COFFObj->getCOFFSection(Section)->Characteristics &
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COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
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