namespace llvm {
namespace object {
+class elf_symbol_iterator;
+class ELFSymbolRef;
+class ELFRelocationRef;
+
class ELFObjectFileBase : public ObjectFile {
+ friend class ELFSymbolRef;
+ friend class ELFSectionRef;
+ friend class ELFRelocationRef;
+
protected:
ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source);
-public:
- virtual ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
+ virtual uint64_t getSymbolSize(DataRefImpl Symb) const = 0;
+ virtual uint8_t getSymbolOther(DataRefImpl Symb) const = 0;
+ virtual uint8_t getSymbolELFType(DataRefImpl Symb) const = 0;
- // FIXME: This is a bit of a hack. Every caller should know if it expecting
- // and addend or not.
- virtual bool hasRelocationAddend(DataRefImpl Rel) const = 0;
+ virtual uint32_t getSectionType(DataRefImpl Sec) const = 0;
+ virtual uint64_t getSectionFlags(DataRefImpl Sec) const = 0;
+
+ virtual ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
+public:
- virtual std::pair<symbol_iterator, symbol_iterator>
- getELFDynamicSymbolIterators() const = 0;
+ typedef iterator_range<elf_symbol_iterator> elf_symbol_iterator_range;
+ virtual elf_symbol_iterator_range getDynamicSymbolIterators() const = 0;
- virtual uint64_t getSectionFlags(SectionRef Sec) const = 0;
- virtual uint32_t getSectionType(SectionRef Sec) const = 0;
+ elf_symbol_iterator_range symbols() const;
static inline bool classof(const Binary *v) { return v->isELF(); }
};
+class ELFSectionRef : public SectionRef {
+public:
+ ELFSectionRef(const SectionRef &B) : SectionRef(B) {
+ assert(isa<ELFObjectFileBase>(SectionRef::getObject()));
+ }
+
+ const ELFObjectFileBase *getObject() const {
+ return cast<ELFObjectFileBase>(SectionRef::getObject());
+ }
+
+ uint32_t getType() const {
+ return getObject()->getSectionType(getRawDataRefImpl());
+ }
+
+ uint64_t getFlags() const {
+ return getObject()->getSectionFlags(getRawDataRefImpl());
+ }
+};
+
+class elf_section_iterator : public section_iterator {
+public:
+ elf_section_iterator(const section_iterator &B) : section_iterator(B) {
+ assert(isa<ELFObjectFileBase>(B->getObject()));
+ }
+
+ const ELFSectionRef *operator->() const {
+ return static_cast<const ELFSectionRef *>(section_iterator::operator->());
+ }
+
+ const ELFSectionRef &operator*() const {
+ return static_cast<const ELFSectionRef &>(section_iterator::operator*());
+ }
+};
+
+class ELFSymbolRef : public SymbolRef {
+public:
+ ELFSymbolRef(const SymbolRef &B) : SymbolRef(B) {
+ assert(isa<ELFObjectFileBase>(SymbolRef::getObject()));
+ }
+
+ const ELFObjectFileBase *getObject() const {
+ return cast<ELFObjectFileBase>(BasicSymbolRef::getObject());
+ }
+
+ uint64_t getSize() const {
+ return getObject()->getSymbolSize(getRawDataRefImpl());
+ }
+
+ uint8_t getOther() const {
+ return getObject()->getSymbolOther(getRawDataRefImpl());
+ }
+
+ uint8_t getELFType() const {
+ return getObject()->getSymbolELFType(getRawDataRefImpl());
+ }
+};
+
+class elf_symbol_iterator : public symbol_iterator {
+public:
+ elf_symbol_iterator(const basic_symbol_iterator &B)
+ : symbol_iterator(SymbolRef(B->getRawDataRefImpl(),
+ cast<ELFObjectFileBase>(B->getObject()))) {}
+
+ const ELFSymbolRef *operator->() const {
+ return static_cast<const ELFSymbolRef *>(symbol_iterator::operator->());
+ }
+
+ const ELFSymbolRef &operator*() const {
+ return static_cast<const ELFSymbolRef &>(symbol_iterator::operator*());
+ }
+};
+
+class ELFRelocationRef : public RelocationRef {
+public:
+ ELFRelocationRef(const RelocationRef &B) : RelocationRef(B) {
+ assert(isa<ELFObjectFileBase>(RelocationRef::getObject()));
+ }
+
+ const ELFObjectFileBase *getObject() const {
+ return cast<ELFObjectFileBase>(RelocationRef::getObject());
+ }
+
+ ErrorOr<int64_t> getAddend() const {
+ return getObject()->getRelocationAddend(getRawDataRefImpl());
+ }
+};
+
+class elf_relocation_iterator : public relocation_iterator {
+public:
+ elf_relocation_iterator(const relocation_iterator &B)
+ : relocation_iterator(RelocationRef(
+ B->getRawDataRefImpl(), cast<ELFObjectFileBase>(B->getObject()))) {}
+
+ const ELFRelocationRef *operator->() const {
+ return static_cast<const ELFRelocationRef *>(
+ relocation_iterator::operator->());
+ }
+
+ const ELFRelocationRef &operator*() const {
+ return static_cast<const ELFRelocationRef &>(
+ relocation_iterator::operator*());
+ }
+};
+
+inline ELFObjectFileBase::elf_symbol_iterator_range
+ELFObjectFileBase::symbols() const {
+ return elf_symbol_iterator_range(symbol_begin(), symbol_end());
+}
+
template <class ELFT> class ELFObjectFile : public ELFObjectFileBase {
+ uint64_t getSymbolSize(DataRefImpl Sym) const override;
+
public:
LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
typedef typename ELFFile<ELFT>::Elf_Rela Elf_Rela;
typedef typename ELFFile<ELFT>::Elf_Dyn Elf_Dyn;
- typedef typename ELFFile<ELFT>::Elf_Sym_Iter Elf_Sym_Iter;
- typedef typename ELFFile<ELFT>::Elf_Shdr_Iter Elf_Shdr_Iter;
- typedef typename ELFFile<ELFT>::Elf_Dyn_Iter Elf_Dyn_Iter;
-
protected:
ELFFile<ELFT> EF;
+ const Elf_Shdr *DotDynSymSec = nullptr; // Dynamic symbol table section.
+ const Elf_Shdr *DotSymtabSec = nullptr; // Symbol table section.
+ ArrayRef<Elf_Word> ShndxTable;
+
void moveSymbolNext(DataRefImpl &Symb) const override;
- std::error_code getSymbolName(DataRefImpl Symb,
- StringRef &Res) const override;
- std::error_code getSymbolAddress(DataRefImpl Symb,
- uint64_t &Res) const override;
+ ErrorOr<StringRef> getSymbolName(DataRefImpl Symb) const override;
+ ErrorOr<uint64_t> getSymbolAddress(DataRefImpl Symb) const override;
+ uint64_t getSymbolValueImpl(DataRefImpl Symb) const override;
uint32_t getSymbolAlignment(DataRefImpl Symb) const override;
- uint64_t getSymbolSize(DataRefImpl Symb) const override;
+ uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override;
uint32_t getSymbolFlags(DataRefImpl Symb) const override;
- std::error_code getSymbolOther(DataRefImpl Symb, uint8_t &Res) const override;
- std::error_code getSymbolType(DataRefImpl Symb,
- SymbolRef::Type &Res) const override;
- section_iterator getSymbolSection(const Elf_Sym *Symb) const;
- std::error_code getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const override;
+ uint8_t getSymbolOther(DataRefImpl Symb) const override;
+ uint8_t getSymbolELFType(DataRefImpl Symb) const override;
+ SymbolRef::Type getSymbolType(DataRefImpl Symb) const override;
+ ErrorOr<section_iterator> getSymbolSection(const Elf_Sym *Symb,
+ const Elf_Shdr *SymTab) const;
+ ErrorOr<section_iterator> getSymbolSection(DataRefImpl Symb) const override;
void moveSectionNext(DataRefImpl &Sec) const override;
std::error_code getSectionName(DataRefImpl Sec,
bool isSectionData(DataRefImpl Sec) const override;
bool isSectionBSS(DataRefImpl Sec) const override;
bool isSectionVirtual(DataRefImpl Sec) const override;
- bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
relocation_iterator section_rel_end(DataRefImpl Sec) const override;
section_iterator getRelocatedSection(DataRefImpl Sec) const override;
void moveRelocationNext(DataRefImpl &Rel) const override;
- std::error_code getRelocationAddress(DataRefImpl Rel,
- uint64_t &Res) const override;
- std::error_code getRelocationOffset(DataRefImpl Rel,
- uint64_t &Res) const override;
+ uint64_t getRelocationOffset(DataRefImpl Rel) const override;
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
- std::error_code getRelocationType(DataRefImpl Rel,
- uint64_t &Res) const override;
- std::error_code
- getRelocationTypeName(DataRefImpl Rel,
- SmallVectorImpl<char> &Result) const override;
+ uint64_t getRelocationType(DataRefImpl Rel) const override;
+ void getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const override;
- uint64_t getROffset(DataRefImpl Rel) const;
+ uint32_t getSectionType(DataRefImpl Sec) const override;
+ uint64_t getSectionFlags(DataRefImpl Sec) const override;
StringRef getRelocationTypeName(uint32_t Type) const;
/// \brief Get the relocation section that contains \a Rel.
const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
- return EF.getSection(Rel.d.a);
+ return *EF.getSection(Rel.d.a);
}
- const Elf_Rel *getRel(DataRefImpl Rel) const;
- const Elf_Rela *getRela(DataRefImpl Rela) const;
+ DataRefImpl toDRI(const Elf_Shdr *SymTable, unsigned SymbolNum) const {
+ DataRefImpl DRI;
+ if (!SymTable) {
+ DRI.d.a = 0;
+ DRI.d.b = 0;
+ return DRI;
+ }
+ assert(SymTable->sh_type == ELF::SHT_SYMTAB ||
+ SymTable->sh_type == ELF::SHT_DYNSYM);
- Elf_Sym_Iter toELFSymIter(DataRefImpl Symb) const {
- bool IsDynamic = Symb.p & 1;
- if (IsDynamic)
- return Elf_Sym_Iter(
- EF.begin_dynamic_symbols().getEntSize(),
- reinterpret_cast<const char *>(Symb.p & ~uintptr_t(1)), IsDynamic);
- return Elf_Sym_Iter(EF.begin_symbols().getEntSize(),
- reinterpret_cast<const char *>(Symb.p), IsDynamic);
- }
+ uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.section_begin());
+ unsigned SymTableIndex =
+ (reinterpret_cast<uintptr_t>(SymTable) - SHT) / sizeof(Elf_Shdr);
- DataRefImpl toDRI(Elf_Sym_Iter Symb) const {
- DataRefImpl DRI;
- DRI.p = reinterpret_cast<uintptr_t>(Symb.get()) |
- static_cast<uintptr_t>(Symb.isDynamic());
+ DRI.d.a = SymTableIndex;
+ DRI.d.b = SymbolNum;
return DRI;
}
- Elf_Shdr_Iter toELFShdrIter(DataRefImpl Sec) const {
- return Elf_Shdr_Iter(EF.getHeader()->e_shentsize,
- reinterpret_cast<const char *>(Sec.p));
- }
-
- DataRefImpl toDRI(Elf_Shdr_Iter Sec) const {
- DataRefImpl DRI;
- DRI.p = reinterpret_cast<uintptr_t>(Sec.get());
- return DRI;
+ const Elf_Shdr *toELFShdrIter(DataRefImpl Sec) const {
+ return reinterpret_cast<const Elf_Shdr *>(Sec.p);
}
DataRefImpl toDRI(const Elf_Shdr *Sec) const {
return DRI;
}
- Elf_Dyn_Iter toELFDynIter(DataRefImpl Dyn) const {
- return Elf_Dyn_Iter(EF.begin_dynamic_table().getEntSize(),
- reinterpret_cast<const char *>(Dyn.p));
- }
-
- DataRefImpl toDRI(Elf_Dyn_Iter Dyn) const {
+ DataRefImpl toDRI(const Elf_Dyn *Dyn) const {
DataRefImpl DRI;
- DRI.p = reinterpret_cast<uintptr_t>(Dyn.get());
+ DRI.p = reinterpret_cast<uintptr_t>(Dyn);
return DRI;
}
public:
ELFObjectFile(MemoryBufferRef Object, std::error_code &EC);
- const Elf_Sym *getSymbol(DataRefImpl Symb) const;
+ const Elf_Rel *getRel(DataRefImpl Rel) const;
+ const Elf_Rela *getRela(DataRefImpl Rela) const;
+
+ const Elf_Sym *getSymbol(DataRefImpl Sym) const {
+ return EF.template getEntry<Elf_Sym>(Sym.d.a, Sym.d.b);
+ }
+
+ const Elf_Shdr *getSection(DataRefImpl Sec) const {
+ return reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ }
basic_symbol_iterator symbol_begin_impl() const override;
basic_symbol_iterator symbol_end_impl() const override;
- symbol_iterator dynamic_symbol_begin() const;
- symbol_iterator dynamic_symbol_end() const;
+ elf_symbol_iterator dynamic_symbol_begin() const;
+ elf_symbol_iterator dynamic_symbol_end() const;
section_iterator section_begin() const override;
section_iterator section_end() const override;
ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const override;
- bool hasRelocationAddend(DataRefImpl Rel) const override;
-
- uint64_t getSectionFlags(SectionRef Sec) const override;
- uint32_t getSectionType(SectionRef Sec) const override;
uint8_t getBytesInAddress() const override;
StringRef getFileFormatName() const override;
unsigned getArch() const override;
- StringRef getLoadName() const;
std::error_code getPlatformFlags(unsigned &Result) const override {
Result = EF.getHeader()->e_flags;
ELFT::Is64Bits);
}
- std::pair<symbol_iterator, symbol_iterator>
- getELFDynamicSymbolIterators() const override;
+ elf_symbol_iterator_range getDynamicSymbolIterators() const override;
bool isRelocatableObject() const override;
};
typedef ELFObjectFile<ELFType<support::big, true>> ELF64BEObjectFile;
template <class ELFT>
-void ELFObjectFile<ELFT>::moveSymbolNext(DataRefImpl &Symb) const {
- Symb = toDRI(++toELFSymIter(Symb));
+void ELFObjectFile<ELFT>::moveSymbolNext(DataRefImpl &Sym) const {
+ ++Sym.d.b;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
- StringRef &Result) const {
- ErrorOr<StringRef> Name = EF.getSymbolName(toELFSymIter(Symb));
- if (!Name)
- return Name.getError();
- Result = *Name;
- return std::error_code();
+ErrorOr<StringRef> ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Sym) const {
+ const Elf_Sym *ESym = getSymbol(Sym);
+ const Elf_Shdr *SymTableSec = *EF.getSection(Sym.d.a);
+ const Elf_Shdr *StringTableSec = *EF.getSection(SymTableSec->sh_link);
+ StringRef SymTable = *EF.getStringTable(StringTableSec);
+ return ESym->getName(SymTable);
}
template <class ELFT>
-uint64_t ELFObjectFile<ELFT>::getSectionFlags(SectionRef Sec) const {
- DataRefImpl DRI = Sec.getRawDataRefImpl();
- return toELFShdrIter(DRI)->sh_flags;
+uint64_t ELFObjectFile<ELFT>::getSectionFlags(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_flags;
}
template <class ELFT>
-uint32_t ELFObjectFile<ELFT>::getSectionType(SectionRef Sec) const {
- DataRefImpl DRI = Sec.getRawDataRefImpl();
- return toELFShdrIter(DRI)->sh_type;
+uint32_t ELFObjectFile<ELFT>::getSectionType(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_type;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
- uint64_t &Result) const {
+uint64_t ELFObjectFile<ELFT>::getSymbolValueImpl(DataRefImpl Symb) const {
const Elf_Sym *ESym = getSymbol(Symb);
- switch (EF.getSymbolTableIndex(ESym)) {
+ uint64_t Ret = ESym->st_value;
+ if (ESym->st_shndx == ELF::SHN_ABS)
+ return Ret;
+
+ const Elf_Ehdr *Header = EF.getHeader();
+ // Clear the ARM/Thumb or microMIPS indicator flag.
+ if ((Header->e_machine == ELF::EM_ARM || Header->e_machine == ELF::EM_MIPS) &&
+ ESym->getType() == ELF::STT_FUNC)
+ Ret &= ~1;
+
+ return Ret;
+}
+
+template <class ELFT>
+ErrorOr<uint64_t>
+ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb) const {
+ uint64_t Result = getSymbolValue(Symb);
+ const Elf_Sym *ESym = getSymbol(Symb);
+ switch (ESym->st_shndx) {
case ELF::SHN_COMMON:
case ELF::SHN_UNDEF:
- Result = UnknownAddressOrSize;
- return std::error_code();
case ELF::SHN_ABS:
- Result = ESym->st_value;
- return std::error_code();
- default:
- break;
+ return Result;
}
const Elf_Ehdr *Header = EF.getHeader();
- Result = ESym->st_value;
-
- // Clear the ARM/Thumb or microMIPS indicator flag.
- if ((Header->e_machine == ELF::EM_ARM || Header->e_machine == ELF::EM_MIPS) &&
- ESym->getType() == ELF::STT_FUNC)
- Result &= ~1;
+ const Elf_Shdr *SymTab = *EF.getSection(Symb.d.a);
if (Header->e_type == ELF::ET_REL) {
- const typename ELFFile<ELFT>::Elf_Shdr * Section = EF.getSection(ESym);
- if (Section != nullptr)
+ ErrorOr<const Elf_Shdr *> SectionOrErr =
+ EF.getSection(ESym, SymTab, ShndxTable);
+ if (std::error_code EC = SectionOrErr.getError())
+ return EC;
+ const Elf_Shdr *Section = *SectionOrErr;
+ if (Section)
Result += Section->sh_addr;
}
- return std::error_code();
+ return Result;
}
template <class ELFT>
uint32_t ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb) const {
- Elf_Sym_Iter Sym = toELFSymIter(Symb);
+ const Elf_Sym *Sym = getSymbol(Symb);
if (Sym->st_shndx == ELF::SHN_COMMON)
return Sym->st_value;
return 0;
}
template <class ELFT>
-uint64_t ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb) const {
- return toELFSymIter(Symb)->st_size;
+uint64_t ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Sym) const {
+ return getSymbol(Sym)->st_size;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolOther(DataRefImpl Symb,
- uint8_t &Result) const {
- Result = toELFSymIter(Symb)->st_other;
- return std::error_code();
+uint64_t ELFObjectFile<ELFT>::getCommonSymbolSizeImpl(DataRefImpl Symb) const {
+ return getSymbol(Symb)->st_size;
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
- SymbolRef::Type &Result) const {
+uint8_t ELFObjectFile<ELFT>::getSymbolOther(DataRefImpl Symb) const {
+ return getSymbol(Symb)->st_other;
+}
+
+template <class ELFT>
+uint8_t ELFObjectFile<ELFT>::getSymbolELFType(DataRefImpl Symb) const {
+ return getSymbol(Symb)->getType();
+}
+
+template <class ELFT>
+SymbolRef::Type ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb) const {
const Elf_Sym *ESym = getSymbol(Symb);
switch (ESym->getType()) {
case ELF::STT_NOTYPE:
- Result = SymbolRef::ST_Unknown;
- break;
+ return SymbolRef::ST_Unknown;
case ELF::STT_SECTION:
- Result = SymbolRef::ST_Debug;
- break;
+ return SymbolRef::ST_Debug;
case ELF::STT_FILE:
- Result = SymbolRef::ST_File;
- break;
+ return SymbolRef::ST_File;
case ELF::STT_FUNC:
- Result = SymbolRef::ST_Function;
- break;
+ return SymbolRef::ST_Function;
case ELF::STT_OBJECT:
case ELF::STT_COMMON:
case ELF::STT_TLS:
- Result = SymbolRef::ST_Data;
- break;
+ return SymbolRef::ST_Data;
default:
- Result = SymbolRef::ST_Other;
- break;
+ return SymbolRef::ST_Other;
}
- return std::error_code();
}
template <class ELFT>
-uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb) const {
- Elf_Sym_Iter EIter = toELFSymIter(Symb);
- const Elf_Sym *ESym = &*EIter;
+uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Sym) const {
+ const Elf_Sym *ESym = getSymbol(Sym);
uint32_t Result = SymbolRef::SF_None;
Result |= SymbolRef::SF_Absolute;
if (ESym->getType() == ELF::STT_FILE || ESym->getType() == ELF::STT_SECTION ||
- EIter == EF.begin_symbols() || EIter == EF.begin_dynamic_symbols())
+ ESym == EF.symbol_begin(DotSymtabSec) ||
+ ESym == EF.symbol_begin(DotDynSymSec))
Result |= SymbolRef::SF_FormatSpecific;
- if (EF.getSymbolTableIndex(ESym) == ELF::SHN_UNDEF)
+ if (EF.getHeader()->e_machine == ELF::EM_ARM) {
+ if (ErrorOr<StringRef> NameOrErr = getSymbolName(Sym)) {
+ StringRef Name = *NameOrErr;
+ if (Name.startswith("$d") || Name.startswith("$t") ||
+ Name.startswith("$a"))
+ Result |= SymbolRef::SF_FormatSpecific;
+ }
+ }
+
+ if (ESym->st_shndx == ELF::SHN_UNDEF)
Result |= SymbolRef::SF_Undefined;
- if (ESym->getType() == ELF::STT_COMMON ||
- EF.getSymbolTableIndex(ESym) == ELF::SHN_COMMON)
+ if (ESym->getType() == ELF::STT_COMMON || ESym->st_shndx == ELF::SHN_COMMON)
Result |= SymbolRef::SF_Common;
if (isExportedToOtherDSO(ESym))
}
template <class ELFT>
-section_iterator
-ELFObjectFile<ELFT>::getSymbolSection(const Elf_Sym *ESym) const {
- const Elf_Shdr *ESec = EF.getSection(ESym);
+ErrorOr<section_iterator>
+ELFObjectFile<ELFT>::getSymbolSection(const Elf_Sym *ESym,
+ const Elf_Shdr *SymTab) const {
+ ErrorOr<const Elf_Shdr *> ESecOrErr = EF.getSection(ESym, SymTab, ShndxTable);
+ if (std::error_code EC = ESecOrErr.getError())
+ return EC;
+
+ const Elf_Shdr *ESec = *ESecOrErr;
if (!ESec)
return section_end();
- else {
- DataRefImpl Sec;
- Sec.p = reinterpret_cast<intptr_t>(ESec);
- return section_iterator(SectionRef(Sec, this));
- }
+
+ DataRefImpl Sec;
+ Sec.p = reinterpret_cast<intptr_t>(ESec);
+ return section_iterator(SectionRef(Sec, this));
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
- Res = getSymbolSection(getSymbol(Symb));
- return std::error_code();
+ErrorOr<section_iterator>
+ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb) const {
+ const Elf_Sym *Sym = getSymbol(Symb);
+ const Elf_Shdr *SymTab = *EF.getSection(Symb.d.a);
+ return getSymbolSection(Sym, SymTab);
}
template <class ELFT>
void ELFObjectFile<ELFT>::moveSectionNext(DataRefImpl &Sec) const {
- Sec = toDRI(++toELFShdrIter(Sec));
+ const Elf_Shdr *ESec = getSection(Sec);
+ Sec = toDRI(++ESec);
}
template <class ELFT>
std::error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
StringRef &Result) const {
- ErrorOr<StringRef> Name = EF.getSectionName(&*toELFShdrIter(Sec));
+ ErrorOr<StringRef> Name = EF.getSectionName(&*getSection(Sec));
if (!Name)
return Name.getError();
Result = *Name;
template <class ELFT>
uint64_t ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec) const {
- return toELFShdrIter(Sec)->sh_addr;
+ return getSection(Sec)->sh_addr;
}
template <class ELFT>
uint64_t ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec) const {
- return toELFShdrIter(Sec)->sh_size;
+ return getSection(Sec)->sh_size;
}
template <class ELFT>
std::error_code
ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
StringRef &Result) const {
- Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
+ const Elf_Shdr *EShdr = getSection(Sec);
Result = StringRef((const char *)base() + EShdr->sh_offset, EShdr->sh_size);
return std::error_code();
}
template <class ELFT>
uint64_t ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec) const {
- return toELFShdrIter(Sec)->sh_addralign;
+ return getSection(Sec)->sh_addralign;
}
template <class ELFT>
bool ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec) const {
- return toELFShdrIter(Sec)->sh_flags & ELF::SHF_EXECINSTR;
+ return getSection(Sec)->sh_flags & ELF::SHF_EXECINSTR;
}
template <class ELFT>
bool ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec) const {
- Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
+ const Elf_Shdr *EShdr = getSection(Sec);
return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
EShdr->sh_type == ELF::SHT_PROGBITS;
}
template <class ELFT>
bool ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec) const {
- Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
+ const Elf_Shdr *EShdr = getSection(Sec);
return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
EShdr->sh_type == ELF::SHT_NOBITS;
}
template <class ELFT>
bool ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec) const {
- return toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
-}
-
-template <class ELFT>
-bool ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
- DataRefImpl Symb) const {
- Elf_Sym_Iter ESym = toELFSymIter(Symb);
-
- uintX_t Index = ESym->st_shndx;
- bool Reserved = Index >= ELF::SHN_LORESERVE && Index <= ELF::SHN_HIRESERVE;
-
- return !Reserved && (&*toELFShdrIter(Sec) == EF.getSection(ESym->st_shndx));
+ return getSection(Sec)->sh_type == ELF::SHT_NOBITS;
}
template <class ELFT>
relocation_iterator
ELFObjectFile<ELFT>::section_rel_begin(DataRefImpl Sec) const {
DataRefImpl RelData;
- uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.begin_sections().get());
+ uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.section_begin());
RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
RelData.d.b = 0;
+
+ const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
+ return relocation_iterator(RelocationRef(RelData, this));
+
+ const Elf_Shdr *RelSec = getRelSection(RelData);
+ ErrorOr<const Elf_Shdr *> SymSecOrErr = EF.getSection(RelSec->sh_link);
+ if (std::error_code EC = SymSecOrErr.getError())
+ report_fatal_error(EC.message());
+ const Elf_Shdr *SymSec = *SymSecOrErr;
+ uint32_t SymSecType = SymSec->sh_type;
+ if (SymSecType != ELF::SHT_SYMTAB && SymSecType != ELF::SHT_DYNSYM)
+ report_fatal_error("Invalid symbol table section type!");
+ if (SymSecType == ELF::SHT_DYNSYM)
+ RelData.d.b = 1;
+
return relocation_iterator(RelocationRef(RelData, this));
}
template <class ELFT>
relocation_iterator
ELFObjectFile<ELFT>::section_rel_end(DataRefImpl Sec) const {
- DataRefImpl RelData;
- uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.begin_sections().get());
const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
- RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
+ relocation_iterator Begin = section_rel_begin(Sec);
if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
- RelData.d.b = 0;
- else
- RelData.d.b = S->sh_size / S->sh_entsize;
-
+ return Begin;
+ DataRefImpl RelData = Begin->getRawDataRefImpl();
+ RelData.d.b += (S->sh_size / S->sh_entsize) << 1;
return relocation_iterator(RelocationRef(RelData, this));
}
if (EF.getHeader()->e_type != ELF::ET_REL)
return section_end();
- Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
+ const Elf_Shdr *EShdr = getSection(Sec);
uintX_t Type = EShdr->sh_type;
if (Type != ELF::SHT_REL && Type != ELF::SHT_RELA)
return section_end();
- const Elf_Shdr *R = EF.getSection(EShdr->sh_info);
- return section_iterator(SectionRef(toDRI(R), this));
+ ErrorOr<const Elf_Shdr *> R = EF.getSection(EShdr->sh_info);
+ if (std::error_code EC = R.getError())
+ report_fatal_error(EC.message());
+ return section_iterator(SectionRef(toDRI(*R), this));
}
// Relocations
template <class ELFT>
void ELFObjectFile<ELFT>::moveRelocationNext(DataRefImpl &Rel) const {
- ++Rel.d.b;
+ Rel.d.b += 2;
}
template <class ELFT>
ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel) const {
uint32_t symbolIdx;
const Elf_Shdr *sec = getRelSection(Rel);
- switch (sec->sh_type) {
- default:
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL: {
+ if (sec->sh_type == ELF::SHT_REL)
symbolIdx = getRel(Rel)->getSymbol(EF.isMips64EL());
- break;
- }
- case ELF::SHT_RELA: {
+ else
symbolIdx = getRela(Rel)->getSymbol(EF.isMips64EL());
- break;
- }
- }
if (!symbolIdx)
return symbol_end();
- const Elf_Shdr *SymSec = EF.getSection(sec->sh_link);
-
+ bool IsDyn = Rel.d.b & 1;
DataRefImpl SymbolData;
- switch (SymSec->sh_type) {
- default:
- report_fatal_error("Invalid symbol table section type!");
- case ELF::SHT_SYMTAB:
- SymbolData = toDRI(EF.begin_symbols() + symbolIdx);
- break;
- case ELF::SHT_DYNSYM:
- SymbolData = toDRI(EF.begin_dynamic_symbols() + symbolIdx);
- break;
- }
-
+ if (IsDyn)
+ SymbolData = toDRI(DotDynSymSec, symbolIdx);
+ else
+ SymbolData = toDRI(DotSymtabSec, symbolIdx);
return symbol_iterator(SymbolRef(SymbolData, this));
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
- uint64_t &Result) const {
- uint64_t ROffset = getROffset(Rel);
- const Elf_Ehdr *Header = EF.getHeader();
-
- if (Header->e_type == ELF::ET_REL) {
- const Elf_Shdr *RelocationSec = getRelSection(Rel);
- const Elf_Shdr *RelocatedSec = EF.getSection(RelocationSec->sh_info);
- Result = ROffset + RelocatedSec->sh_addr;
- } else {
- Result = ROffset;
- }
-
- return std::error_code();
-}
-
-template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
- uint64_t &Result) const {
+uint64_t ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel) const {
assert(EF.getHeader()->e_type == ELF::ET_REL &&
"Only relocatable object files have relocation offsets");
- Result = getROffset(Rel);
- return std::error_code();
-}
-
-template <class ELFT>
-uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const {
const Elf_Shdr *sec = getRelSection(Rel);
- switch (sec->sh_type) {
- default:
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL:
+ if (sec->sh_type == ELF::SHT_REL)
return getRel(Rel)->r_offset;
- case ELF::SHT_RELA:
- return getRela(Rel)->r_offset;
- }
+
+ return getRela(Rel)->r_offset;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
- uint64_t &Result) const {
+uint64_t ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel) const {
const Elf_Shdr *sec = getRelSection(Rel);
- switch (sec->sh_type) {
- default:
- report_fatal_error("Invalid section type in Rel!");
- case ELF::SHT_REL: {
- Result = getRel(Rel)->getType(EF.isMips64EL());
- break;
- }
- case ELF::SHT_RELA: {
- Result = getRela(Rel)->getType(EF.isMips64EL());
- break;
- }
- }
- return std::error_code();
+ if (sec->sh_type == ELF::SHT_REL)
+ return getRel(Rel)->getType(EF.isMips64EL());
+ else
+ return getRela(Rel)->getType(EF.isMips64EL());
}
template <class ELFT>
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getRelocationTypeName(
+void ELFObjectFile<ELFT>::getRelocationTypeName(
DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
- const Elf_Shdr *sec = getRelSection(Rel);
- uint32_t type;
- switch (sec->sh_type) {
- default:
- return object_error::parse_failed;
- case ELF::SHT_REL: {
- type = getRel(Rel)->getType(EF.isMips64EL());
- break;
- }
- case ELF::SHT_RELA: {
- type = getRela(Rel)->getType(EF.isMips64EL());
- break;
- }
- }
-
+ uint32_t type = getRelocationType(Rel);
EF.getRelocationTypeName(type, Result);
- return std::error_code();
}
template <class ELFT>
return (int64_t)getRela(Rel)->r_addend;
}
-template <class ELFT>
-bool ELFObjectFile<ELFT>::hasRelocationAddend(DataRefImpl Rel) const {
- return getRelSection(Rel)->sh_type == ELF::SHT_RELA;
-}
-
-template <class ELFT>
-const typename ELFFile<ELFT>::Elf_Sym *
-ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
- return &*toELFSymIter(Symb);
-}
-
template <class ELFT>
const typename ELFObjectFile<ELFT>::Elf_Rel *
ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
- return EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
+ assert(getRelSection(Rel)->sh_type == ELF::SHT_REL);
+ return EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b >> 1);
}
template <class ELFT>
const typename ELFObjectFile<ELFT>::Elf_Rela *
ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
- return EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
+ assert(getRelSection(Rela)->sh_type == ELF::SHT_RELA);
+ return EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b >> 1);
}
template <class ELFT>
ELFObjectFile<ELFT>::ELFObjectFile(MemoryBufferRef Object, std::error_code &EC)
: ELFObjectFileBase(
- getELFType(static_cast<endianness>(ELFT::TargetEndianness) ==
- support::little,
- ELFT::Is64Bits),
+ getELFType(ELFT::TargetEndianness == support::little, ELFT::Is64Bits),
Object),
- EF(Data.getBuffer(), EC) {}
+ EF(Data.getBuffer(), EC) {
+ if (EC)
+ return;
+ for (const Elf_Shdr &Sec : EF.sections()) {
+ switch (Sec.sh_type) {
+ case ELF::SHT_DYNSYM: {
+ if (DotDynSymSec) {
+ // More than one .dynsym!
+ EC = object_error::parse_failed;
+ return;
+ }
+ DotDynSymSec = &Sec;
+ break;
+ }
+ case ELF::SHT_SYMTAB: {
+ if (DotSymtabSec) {
+ // More than one .dynsym!
+ EC = object_error::parse_failed;
+ return;
+ }
+ DotSymtabSec = &Sec;
+ break;
+ }
+ case ELF::SHT_SYMTAB_SHNDX: {
+ ErrorOr<ArrayRef<Elf_Word>> TableOrErr = EF.getSHNDXTable(Sec);
+ if ((EC = TableOrErr.getError()))
+ return;
+ ShndxTable = *TableOrErr;
+ break;
+ }
+ }
+ }
+}
template <class ELFT>
basic_symbol_iterator ELFObjectFile<ELFT>::symbol_begin_impl() const {
- return basic_symbol_iterator(SymbolRef(toDRI(EF.begin_symbols()), this));
+ DataRefImpl Sym = toDRI(DotSymtabSec, 0);
+ return basic_symbol_iterator(SymbolRef(Sym, this));
}
template <class ELFT>
basic_symbol_iterator ELFObjectFile<ELFT>::symbol_end_impl() const {
- return basic_symbol_iterator(SymbolRef(toDRI(EF.end_symbols()), this));
+ const Elf_Shdr *SymTab = DotSymtabSec;
+ if (!SymTab)
+ return symbol_begin_impl();
+ DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
+ return basic_symbol_iterator(SymbolRef(Sym, this));
}
template <class ELFT>
-symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
- return symbol_iterator(SymbolRef(toDRI(EF.begin_dynamic_symbols()), this));
+elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
+ DataRefImpl Sym = toDRI(DotDynSymSec, 0);
+ return symbol_iterator(SymbolRef(Sym, this));
}
template <class ELFT>
-symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_end() const {
- return symbol_iterator(SymbolRef(toDRI(EF.end_dynamic_symbols()), this));
+elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_end() const {
+ const Elf_Shdr *SymTab = DotDynSymSec;
+ DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
+ return basic_symbol_iterator(SymbolRef(Sym, this));
}
template <class ELFT>
section_iterator ELFObjectFile<ELFT>::section_begin() const {
- return section_iterator(SectionRef(toDRI(EF.begin_sections()), this));
+ return section_iterator(SectionRef(toDRI(EF.section_begin()), this));
}
template <class ELFT>
section_iterator ELFObjectFile<ELFT>::section_end() const {
- return section_iterator(SectionRef(toDRI(EF.end_sections()), this));
-}
-
-template <class ELFT>
-StringRef ELFObjectFile<ELFT>::getLoadName() const {
- Elf_Dyn_Iter DI = EF.begin_dynamic_table();
- Elf_Dyn_Iter DE = EF.end_dynamic_table();
-
- while (DI != DE && DI->getTag() != ELF::DT_SONAME)
- ++DI;
-
- if (DI != DE)
- return EF.getDynamicString(DI->getVal());
- return "";
+ return section_iterator(SectionRef(toDRI(EF.section_end()), this));
}
template <class ELFT>
switch (EF.getHeader()->e_machine) {
case ELF::EM_386:
return "ELF32-i386";
+ case ELF::EM_IAMCU:
+ return "ELF32-iamcu";
case ELF::EM_X86_64:
return "ELF32-x86-64";
case ELF::EM_ARM:
return (IsLittleEndian ? "ELF32-arm-little" : "ELF32-arm-big");
+ case ELF::EM_AVR:
+ return "ELF32-avr";
case ELF::EM_HEXAGON:
return "ELF32-hexagon";
case ELF::EM_MIPS:
bool IsLittleEndian = ELFT::TargetEndianness == support::little;
switch (EF.getHeader()->e_machine) {
case ELF::EM_386:
+ case ELF::EM_IAMCU:
return Triple::x86;
case ELF::EM_X86_64:
return Triple::x86_64;
return Triple::aarch64;
case ELF::EM_ARM:
return Triple::arm;
+ case ELF::EM_AVR:
+ return Triple::avr;
case ELF::EM_HEXAGON:
return Triple::hexagon;
case ELF::EM_MIPS:
}
template <class ELFT>
-std::pair<symbol_iterator, symbol_iterator>
-ELFObjectFile<ELFT>::getELFDynamicSymbolIterators() const {
- return std::make_pair(dynamic_symbol_begin(), dynamic_symbol_end());
+ELFObjectFileBase::elf_symbol_iterator_range
+ELFObjectFile<ELFT>::getDynamicSymbolIterators() const {
+ return make_range(dynamic_symbol_begin(), dynamic_symbol_end());
}
template <class ELFT> bool ELFObjectFile<ELFT>::isRelocatableObject() const {
return EF.getHeader()->e_type == ELF::ET_REL;
}
-inline std::pair<symbol_iterator, symbol_iterator>
-getELFDynamicSymbolIterators(const SymbolicFile *Obj) {
- return cast<ELFObjectFileBase>(Obj)->getELFDynamicSymbolIterators();
-}
-
}
}
projects / oota-llvm.git / blobdiff