//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_OBJECT_ELF_OBJECT_FILE_H
-#define LLVM_OBJECT_ELF_OBJECT_FILE_H
+#ifndef LLVM_OBJECT_ELFOBJECTFILE_H
+#define LLVM_OBJECT_ELFOBJECTFILE_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PointerIntPair.h"
namespace llvm {
namespace object {
-template <class ELFT>
-class ELFObjectFile : public ObjectFile {
+class elf_symbol_iterator;
+class ELFSymbolRef;
+
+class ELFObjectFileBase : public ObjectFile {
+ friend class ELFSymbolRef;
+ friend class ELFSectionRef;
+
+protected:
+ ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source);
+
+ virtual uint64_t getSymbolSize(DataRefImpl Symb) const = 0;
+ virtual uint8_t getSymbolOther(DataRefImpl Symb) const = 0;
+ virtual uint8_t getSymbolELFType(DataRefImpl Symb) const = 0;
+
+ virtual uint32_t getSectionType(DataRefImpl Sec) const = 0;
+ virtual uint64_t getSectionFlags(DataRefImpl Sec) const = 0;
+
+public:
+ virtual ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) 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;
+
+ typedef iterator_range<elf_symbol_iterator> elf_symbol_iterator_range;
+ virtual elf_symbol_iterator_range getDynamicSymbolIterators() 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*());
+ }
+};
+
+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;
StringRef &Res) const override;
std::error_code getSymbolAddress(DataRefImpl Symb,
uint64_t &Res) const override;
- std::error_code getSymbolAlignment(DataRefImpl Symb,
- uint32_t &Res) const override;
- std::error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const override;
+ uint64_t getSymbolValue(DataRefImpl Symb) const override;
+ uint32_t getSymbolAlignment(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;
+ uint8_t getSymbolOther(DataRefImpl Symb) const override;
+ uint8_t getSymbolELFType(DataRefImpl Symb) const override;
+ SymbolRef::Type getSymbolType(DataRefImpl Symb) const override;
+ section_iterator getSymbolSection(const Elf_Sym *Symb) const;
std::error_code getSymbolSection(DataRefImpl Symb,
section_iterator &Res) const override;
- std::error_code getLibraryNext(DataRefImpl Data,
- LibraryRef &Result) const override;
- std::error_code getLibraryPath(DataRefImpl Data,
- StringRef &Res) const override;
-
void moveSectionNext(DataRefImpl &Sec) const override;
std::error_code getSectionName(DataRefImpl Sec,
StringRef &Res) const override;
- std::error_code getSectionAddress(DataRefImpl Sec,
- uint64_t &Res) const override;
- std::error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const override;
+ uint64_t getSectionAddress(DataRefImpl Sec) const override;
+ uint64_t getSectionSize(DataRefImpl Sec) const override;
std::error_code getSectionContents(DataRefImpl Sec,
StringRef &Res) const override;
- std::error_code getSectionAlignment(DataRefImpl Sec,
- uint64_t &Res) const override;
- std::error_code isSectionText(DataRefImpl Sec, bool &Res) const override;
- std::error_code isSectionData(DataRefImpl Sec, bool &Res) const override;
- std::error_code isSectionBSS(DataRefImpl Sec, bool &Res) const override;
- std::error_code isSectionRequiredForExecution(DataRefImpl Sec,
- bool &Res) const override;
- std::error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const override;
- std::error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const override;
- std::error_code isSectionReadOnlyData(DataRefImpl Sec,
- bool &Res) const override;
- std::error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
- bool &Result) const override;
+ uint64_t getSectionAlignment(DataRefImpl Sec) const override;
+ bool isSectionText(DataRefImpl Sec) const override;
+ 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;
- std::error_code
- getRelocationValueString(DataRefImpl Rel,
- SmallVectorImpl<char> &Result) const override;
+ uint32_t getSectionType(DataRefImpl Sec) const override;
+ uint64_t getSectionFlags(DataRefImpl Sec) const override;
uint64_t getROffset(DataRefImpl Rel) const;
StringRef getRelocationTypeName(uint32_t Type) const;
const Elf_Rel *getRel(DataRefImpl Rel) const;
const Elf_Rela *getRela(DataRefImpl Rela) const;
- 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);
+ const Elf_Sym *toELFSymIter(DataRefImpl Sym) const {
+ return reinterpret_cast<const Elf_Sym *>(Sym.p & ~uintptr_t(1));
}
- DataRefImpl toDRI(Elf_Sym_Iter Symb) const {
+ DataRefImpl toDRI(const Elf_Sym *Sym, bool IsDynamic) const {
DataRefImpl DRI;
- DRI.p = reinterpret_cast<uintptr_t>(Symb.get()) |
- static_cast<uintptr_t>(Symb.isDynamic());
+ DRI.p =
+ reinterpret_cast<uintptr_t>(Sym) | static_cast<uintptr_t>(IsDynamic);
return DRI;
}
return DRI;
}
+ bool isExportedToOtherDSO(const Elf_Sym *ESym) const {
+ unsigned char Binding = ESym->getBinding();
+ unsigned char Visibility = ESym->getVisibility();
+
+ // A symbol is exported if its binding is either GLOBAL or WEAK, and its
+ // visibility is either DEFAULT or PROTECTED. All other symbols are not
+ // exported.
+ if ((Binding == ELF::STB_GLOBAL || Binding == ELF::STB_WEAK) &&
+ (Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_PROTECTED))
+ return true;
+
+ return false;
+ }
+
// This flag is used for classof, to distinguish ELFObjectFile from
// its subclass. If more subclasses will be created, this flag will
// have to become an enum.
bool isDyldELFObject;
public:
- ELFObjectFile(std::unique_ptr<MemoryBuffer> Object, std::error_code &EC);
+ ELFObjectFile(MemoryBufferRef Object, std::error_code &EC);
const Elf_Sym *getSymbol(DataRefImpl Symb) const;
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;
- library_iterator needed_library_begin() const override;
- library_iterator needed_library_end() const override;
-
- std::error_code getRelocationAddend(DataRefImpl Rel, int64_t &Res) const;
- std::error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
- bool &IsDefault) const;
+ ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const override;
+ bool hasRelocationAddend(DataRefImpl Rel) const override;
uint8_t getBytesInAddress() const override;
StringRef getFileFormatName() const override;
unsigned getArch() const override;
- StringRef getLoadName() const override;
+ StringRef getLoadName() const;
std::error_code getPlatformFlags(unsigned &Result) const override {
Result = EF.getHeader()->e_flags;
- return object_error::success;
+ return std::error_code();
}
const ELFFile<ELFT> *getELFFile() const { return &EF; }
return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
ELFT::Is64Bits);
}
+
+ elf_symbol_iterator_range getDynamicSymbolIterators() const override;
+
+ bool isRelocatableObject() const override;
};
-// Use an alignment of 2 for the typedefs since that is the worst case for
-// ELF files in archives.
-typedef ELFObjectFile<ELFType<support::little, 2, false> > ELF32LEObjectFile;
-typedef ELFObjectFile<ELFType<support::little, 2, true> > ELF64LEObjectFile;
-typedef ELFObjectFile<ELFType<support::big, 2, false> > ELF32BEObjectFile;
-typedef ELFObjectFile<ELFType<support::big, 2, true> > ELF64BEObjectFile;
+typedef ELFObjectFile<ELFType<support::little, false>> ELF32LEObjectFile;
+typedef ELFObjectFile<ELFType<support::little, true>> ELF64LEObjectFile;
+typedef ELFObjectFile<ELFType<support::big, false>> ELF32BEObjectFile;
+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 {
+ const Elf_Sym *S = toELFSymIter(Sym);
+ Sym = toDRI(++S, Sym.p & 1);
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
+std::error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Sym,
StringRef &Result) const {
- ErrorOr<StringRef> Name = EF.getSymbolName(toELFSymIter(Symb));
+ const Elf_Sym *ESym = toELFSymIter(Sym);
+ ErrorOr<StringRef> Name = EF.getSymbolName(ESym, Sym.p & 1);
if (!Name)
return Name.getError();
Result = *Name;
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
- StringRef &Version,
- bool &IsDefault) const {
- DataRefImpl Symb = SymRef.getRawDataRefImpl();
- const Elf_Sym *symb = getSymbol(Symb);
- ErrorOr<StringRef> Ver =
- EF.getSymbolVersion(EF.getSection(Symb.d.b), symb, IsDefault);
- if (!Ver)
- return Ver.getError();
- Version = *Ver;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getSectionFlags(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_flags;
+}
+
+template <class ELFT>
+uint32_t ELFObjectFile<ELFT>::getSectionType(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_type;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb) const {
+ const Elf_Sym *ESym = getSymbol(Symb);
+ switch (ESym->st_shndx) {
+ case ELF::SHN_COMMON:
+ case ELF::SHN_UNDEF:
+ return UnknownAddress;
+ case ELF::SHN_ABS:
+ return ESym->st_value;
+ }
+
+ const Elf_Ehdr *Header = EF.getHeader();
+ uint64_t Ret = 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)
+ Ret &= ~1;
+
+ return Ret;
}
template <class ELFT>
std::error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
uint64_t &Result) const {
+ Result = getSymbolValue(Symb);
const Elf_Sym *ESym = getSymbol(Symb);
- switch (EF.getSymbolTableIndex(ESym)) {
+ switch (ESym->st_shndx) {
case ELF::SHN_COMMON:
case ELF::SHN_UNDEF:
- Result = UnknownAddressOrSize;
- return object_error::success;
case ELF::SHN_ABS:
- Result = ESym->st_value;
- return object_error::success;
- default:
- break;
+ return std::error_code();
}
const Elf_Ehdr *Header = EF.getHeader();
- Result = ESym->st_value;
- // Clear the ARM/Thumb indicator flag.
- if (Header->e_machine == ELF::EM_ARM && ESym->getType() == ELF::STT_FUNC)
- Result &= ~1;
-
- if (Header->e_type == ELF::ET_REL)
- Result += EF.getSection(ESym)->sh_addr;
+ if (Header->e_type == ELF::ET_REL) {
+ const typename ELFFile<ELFT>::Elf_Shdr * Section = EF.getSection(ESym);
+ if (Section != nullptr)
+ Result += Section->sh_addr;
+ }
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb,
- uint32_t &Res) const {
- Elf_Sym_Iter Sym = toELFSymIter(Symb);
+uint32_t ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb) const {
+ const Elf_Sym *Sym = toELFSymIter(Symb);
if (Sym->st_shndx == ELF::SHN_COMMON)
- Res = Sym->st_value;
- else
- Res = 0;
- return object_error::success;
+ return Sym->st_value;
+ return 0;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
- uint64_t &Result) const {
- Result = toELFSymIter(Symb)->st_size;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Sym) const {
+ return toELFSymIter(Sym)->st_size;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSymbolOther(DataRefImpl Symb,
- uint8_t &Result) const {
- Result = toELFSymIter(Symb)->st_other;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getCommonSymbolSizeImpl(DataRefImpl Symb) const {
+ return toELFSymIter(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 toELFSymIter(Symb)->st_other;
+}
+
+template <class ELFT>
+uint8_t ELFObjectFile<ELFT>::getSymbolELFType(DataRefImpl Symb) const {
+ return toELFSymIter(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 object_error::success;
}
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 = toELFSymIter(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.begin_symbols() || ESym == EF.begin_dynamic_symbols())
Result |= SymbolRef::SF_FormatSpecific;
- if (EF.getSymbolTableIndex(ESym) == ELF::SHN_UNDEF)
+ if (EF.getHeader()->e_machine == ELF::EM_ARM) {
+ ErrorOr<StringRef> NameOrErr = EF.getSymbolName(ESym, Sym.p & 1);
+ if (NameOrErr) {
+ 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))
+ Result |= SymbolRef::SF_Exported;
+
+ if (ESym->getVisibility() == ELF::STV_HIDDEN)
+ Result |= SymbolRef::SF_Hidden;
+
return Result;
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
- const Elf_Sym *ESym = getSymbol(Symb);
+section_iterator
+ELFObjectFile<ELFT>::getSymbolSection(const Elf_Sym *ESym) const {
const Elf_Shdr *ESec = EF.getSection(ESym);
if (!ESec)
- Res = section_end();
+ return section_end();
else {
DataRefImpl Sec;
Sec.p = reinterpret_cast<intptr_t>(ESec);
- Res = section_iterator(SectionRef(Sec, this));
+ return section_iterator(SectionRef(Sec, this));
}
- return object_error::success;
+}
+
+template <class ELFT>
+std::error_code
+ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ Res = getSymbolSection(getSymbol(Symb));
+ return std::error_code();
}
template <class ELFT>
if (!Name)
return Name.getError();
Result = *Name;
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
- uint64_t &Result) const {
- Result = toELFShdrIter(Sec)->sh_addr;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_addr;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
- uint64_t &Result) const {
- Result = toELFShdrIter(Sec)->sh_size;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_size;
}
template <class ELFT>
StringRef &Result) const {
Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
Result = StringRef((const char *)base() + EShdr->sh_offset, EShdr->sh_size);
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
- uint64_t &Result) const {
- Result = toELFShdrIter(Sec)->sh_addralign;
- return object_error::success;
+uint64_t ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_addralign;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
- bool &Result) const {
- Result = toELFShdrIter(Sec)->sh_flags & ELF::SHF_EXECINSTR;
- return object_error::success;
+bool ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_flags & ELF::SHF_EXECINSTR;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
- bool &Result) const {
+bool ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec) const {
Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
- Result = EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
- EShdr->sh_type == ELF::SHT_PROGBITS;
- return object_error::success;
+ return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
+ EShdr->sh_type == ELF::SHT_PROGBITS;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
- bool &Result) const {
+bool ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec) const {
Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
- Result = EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
- EShdr->sh_type == ELF::SHT_NOBITS;
- return object_error::success;
+ return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
+ EShdr->sh_type == ELF::SHT_NOBITS;
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::isSectionRequiredForExecution(DataRefImpl Sec,
- bool &Result) const {
- Result = toELFShdrIter(Sec)->sh_flags & ELF::SHF_ALLOC;
- return object_error::success;
+bool ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec) const {
+ return toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
- bool &Result) const {
- Result = toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
- return object_error::success;
-}
-
-template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
- bool &Result) const {
- Result = toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
- return object_error::success;
-}
-
-template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
- bool &Result) const {
- Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
- Result = !(EShdr->sh_flags & (ELF::SHF_WRITE | ELF::SHF_EXECINSTR));
- return object_error::success;
-}
-
-template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
- DataRefImpl Symb,
- bool &Result) const {
- Elf_Sym_Iter ESym = toELFSymIter(Symb);
+bool ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
+ DataRefImpl Symb) const {
+ const Elf_Sym *ESym = toELFSymIter(Symb);
uintX_t Index = ESym->st_shndx;
bool Reserved = Index >= ELF::SHN_LORESERVE && Index <= ELF::SHN_HIRESERVE;
- Result = !Reserved && (&*toELFShdrIter(Sec) == EF.getSection(ESym->st_shndx));
- return object_error::success;
+ return !Reserved && (&*toELFShdrIter(Sec) == EF.getSection(ESym->st_shndx));
}
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();
default:
report_fatal_error("Invalid symbol table section type!");
case ELF::SHT_SYMTAB:
- SymbolData = toDRI(EF.begin_symbols() + symbolIdx);
+ SymbolData = toDRI(EF.begin_symbols() + symbolIdx, false);
break;
case ELF::SHT_DYNSYM:
- SymbolData = toDRI(EF.begin_dynamic_symbols() + symbolIdx);
+ SymbolData = toDRI(EF.begin_dynamic_symbols() + symbolIdx, true);
break;
}
Result = ROffset;
}
- return object_error::success;
+ 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 object_error::success;
+ return getROffset(Rel);
}
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 {
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)
Result = getRel(Rel)->getType(EF.isMips64EL());
- break;
- }
- case ELF::SHT_RELA: {
+ else
Result = getRela(Rel)->getType(EF.isMips64EL());
- break;
- }
- }
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
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: {
+ if (sec->sh_type == ELF::SHT_REL)
type = getRel(Rel)->getType(EF.isMips64EL());
- break;
- }
- case ELF::SHT_RELA: {
+ else
type = getRela(Rel)->getType(EF.isMips64EL());
- break;
- }
- }
EF.getRelocationTypeName(type, Result);
- return object_error::success;
+ return std::error_code();
}
template <class ELFT>
-std::error_code
-ELFObjectFile<ELFT>::getRelocationAddend(DataRefImpl Rel,
- int64_t &Result) 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 = 0;
- return object_error::success;
- }
- case ELF::SHT_RELA: {
- Result = getRela(Rel)->r_addend;
- return object_error::success;
- }
- }
+ErrorOr<int64_t>
+ELFObjectFile<ELFT>::getRelocationAddend(DataRefImpl Rel) const {
+ if (getRelSection(Rel)->sh_type != ELF::SHT_RELA)
+ return object_error::parse_failed;
+ return (int64_t)getRela(Rel)->r_addend;
}
template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getRelocationValueString(
- DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
- const Elf_Shdr *sec = getRelSection(Rel);
- uint8_t type;
- StringRef res;
- int64_t addend = 0;
- uint16_t symbol_index = 0;
- switch (sec->sh_type) {
- default:
- return object_error::parse_failed;
- case ELF::SHT_REL: {
- type = getRel(Rel)->getType(EF.isMips64EL());
- symbol_index = getRel(Rel)->getSymbol(EF.isMips64EL());
- // TODO: Read implicit addend from section data.
- break;
- }
- case ELF::SHT_RELA: {
- type = getRela(Rel)->getType(EF.isMips64EL());
- symbol_index = getRela(Rel)->getSymbol(EF.isMips64EL());
- addend = getRela(Rel)->r_addend;
- break;
- }
- }
- const Elf_Sym *symb =
- EF.template getEntry<Elf_Sym>(sec->sh_link, symbol_index);
- ErrorOr<StringRef> SymName =
- EF.getSymbolName(EF.getSection(sec->sh_link), symb);
- if (!SymName)
- return SymName.getError();
- switch (EF.getHeader()->e_machine) {
- case ELF::EM_X86_64:
- switch (type) {
- case ELF::R_X86_64_PC8:
- case ELF::R_X86_64_PC16:
- case ELF::R_X86_64_PC32: {
- std::string fmtbuf;
- raw_string_ostream fmt(fmtbuf);
- fmt << *SymName << (addend < 0 ? "" : "+") << addend << "-P";
- fmt.flush();
- Result.append(fmtbuf.begin(), fmtbuf.end());
- } break;
- case ELF::R_X86_64_8:
- case ELF::R_X86_64_16:
- case ELF::R_X86_64_32:
- case ELF::R_X86_64_32S:
- case ELF::R_X86_64_64: {
- std::string fmtbuf;
- raw_string_ostream fmt(fmtbuf);
- fmt << *SymName << (addend < 0 ? "" : "+") << addend;
- fmt.flush();
- Result.append(fmtbuf.begin(), fmtbuf.end());
- } break;
- default:
- res = "Unknown";
- }
- break;
- case ELF::EM_AARCH64: {
- std::string fmtbuf;
- raw_string_ostream fmt(fmtbuf);
- fmt << *SymName;
- if (addend != 0)
- fmt << (addend < 0 ? "" : "+") << addend;
- fmt.flush();
- Result.append(fmtbuf.begin(), fmtbuf.end());
- break;
- }
- case ELF::EM_ARM:
- case ELF::EM_HEXAGON:
- case ELF::EM_MIPS:
- res = *SymName;
- break;
- default:
- res = "Unknown";
- }
- if (Result.empty())
- Result.append(res.begin(), res.end());
- return object_error::success;
+bool ELFObjectFile<ELFT>::hasRelocationAddend(DataRefImpl Rel) const {
+ return getRelSection(Rel)->sh_type == ELF::SHT_RELA;
}
template <class ELFT>
template <class ELFT>
const typename ELFObjectFile<ELFT>::Elf_Rel *
ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
+ assert(getRelSection(Rel)->sh_type == ELF::SHT_REL);
return EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
}
template <class ELFT>
const typename ELFObjectFile<ELFT>::Elf_Rela *
ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
+ assert(getRelSection(Rela)->sh_type == ELF::SHT_RELA);
return EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
}
template <class ELFT>
-ELFObjectFile<ELFT>::ELFObjectFile(std::unique_ptr<MemoryBuffer> Object,
- std::error_code &EC)
- : ObjectFile(getELFType(static_cast<endianness>(ELFT::TargetEndianness) ==
- support::little,
- ELFT::Is64Bits),
- std::move(Object)),
- EF(Data->getBuffer(), EC) {}
+ELFObjectFile<ELFT>::ELFObjectFile(MemoryBufferRef Object, std::error_code &EC)
+ : ELFObjectFileBase(
+ getELFType(static_cast<endianness>(ELFT::TargetEndianness) ==
+ support::little,
+ ELFT::Is64Bits),
+ Object),
+ EF(Data.getBuffer(), EC) {}
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(EF.begin_symbols(), false);
+ 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));
+ DataRefImpl Sym = toDRI(EF.end_symbols(), false);
+ 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(EF.begin_dynamic_symbols(), true);
+ 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 {
+ DataRefImpl Sym = toDRI(EF.end_dynamic_symbols(), true);
+ return symbol_iterator(SymbolRef(Sym, this));
}
template <class ELFT>
return "";
}
-template <class ELFT>
-library_iterator ELFObjectFile<ELFT>::needed_library_begin() 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;
-
- return library_iterator(LibraryRef(toDRI(DI), this));
-}
-
-template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
- LibraryRef &Result) const {
- Elf_Dyn_Iter DI = toELFDynIter(Data);
- Elf_Dyn_Iter DE = EF.end_dynamic_table();
-
- // Skip to the next DT_NEEDED entry.
- do
- ++DI;
- while (DI != DE && DI->getTag() != ELF::DT_NEEDED);
-
- Result = LibraryRef(toDRI(DI), this);
- return object_error::success;
-}
-
-template <class ELFT>
-std::error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
- StringRef &Res) const {
- Res = EF.getDynamicString(toELFDynIter(Data)->getVal());
- return object_error::success;
-}
-
-template <class ELFT>
-library_iterator ELFObjectFile<ELFT>::needed_library_end() const {
- return library_iterator(LibraryRef(toDRI(EF.end_dynamic_table()), this));
-}
-
template <class ELFT>
uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
return ELFT::Is64Bits ? 8 : 4;
template <class ELFT>
StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
+ bool IsLittleEndian = ELFT::TargetEndianness == support::little;
switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
case ELF::ELFCLASS32:
switch (EF.getHeader()->e_machine) {
case ELF::EM_X86_64:
return "ELF32-x86-64";
case ELF::EM_ARM:
- return "ELF32-arm";
+ return (IsLittleEndian ? "ELF32-arm-little" : "ELF32-arm-big");
case ELF::EM_HEXAGON:
return "ELF32-hexagon";
case ELF::EM_MIPS:
case ELF::EM_X86_64:
return "ELF64-x86-64";
case ELF::EM_AARCH64:
- return "ELF64-aarch64";
+ return (IsLittleEndian ? "ELF64-aarch64-little" : "ELF64-aarch64-big");
case ELF::EM_PPC64:
return "ELF64-ppc64";
case ELF::EM_S390:
default:
report_fatal_error("Invalid ELFCLASS!");
}
+ case ELF::EM_PPC:
+ return Triple::ppc;
case ELF::EM_PPC64:
return IsLittleEndian ? Triple::ppc64le : Triple::ppc64;
case ELF::EM_S390:
case ELF::EM_SPARC:
case ELF::EM_SPARC32PLUS:
- return Triple::sparc;
+ return IsLittleEndian ? Triple::sparcel : Triple::sparc;
case ELF::EM_SPARCV9:
return Triple::sparcv9;
}
}
-/// FIXME: Maybe we should have a base ElfObjectFile that is not a template
-/// and make these member functions?
-inline std::error_code getELFRelocationAddend(const RelocationRef R,
- int64_t &Addend) {
- const ObjectFile *Obj = R.getObjectFile();
- DataRefImpl DRI = R.getRawDataRefImpl();
- // Little-endian 32-bit
- if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
- return ELFObj->getRelocationAddend(DRI, Addend);
-
- // Big-endian 32-bit
- if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
- return ELFObj->getRelocationAddend(DRI, Addend);
-
- // Little-endian 64-bit
- if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
- return ELFObj->getRelocationAddend(DRI, Addend);
-
- // Big-endian 64-bit
- if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
- return ELFObj->getRelocationAddend(DRI, Addend);
-
- llvm_unreachable("Object passed to getELFRelocationAddend() is not ELF");
+template <class ELFT>
+ELFObjectFileBase::elf_symbol_iterator_range
+ELFObjectFile<ELFT>::getDynamicSymbolIterators() const {
+ return make_range(dynamic_symbol_begin(), dynamic_symbol_end());
}
-inline std::pair<symbol_iterator, symbol_iterator>
-getELFDynamicSymbolIterators(SymbolicFile *Obj) {
- if (const ELF32LEObjectFile *ELF = dyn_cast<ELF32LEObjectFile>(Obj))
- return std::make_pair(ELF->dynamic_symbol_begin(),
- ELF->dynamic_symbol_end());
- if (const ELF64LEObjectFile *ELF = dyn_cast<ELF64LEObjectFile>(Obj))
- return std::make_pair(ELF->dynamic_symbol_begin(),
- ELF->dynamic_symbol_end());
- if (const ELF32BEObjectFile *ELF = dyn_cast<ELF32BEObjectFile>(Obj))
- return std::make_pair(ELF->dynamic_symbol_begin(),
- ELF->dynamic_symbol_end());
- if (const ELF64BEObjectFile *ELF = cast<ELF64BEObjectFile>(Obj))
- return std::make_pair(ELF->dynamic_symbol_begin(),
- ELF->dynamic_symbol_end());
-
- llvm_unreachable(
- "Object passed to getELFDynamicSymbolIterators() is not ELF");
+template <class ELFT> bool ELFObjectFile<ELFT>::isRelocatableObject() const {
+ return EF.getHeader()->e_type == ELF::ET_REL;
}
-/// This is a generic interface for retrieving GNU symbol version
-/// information from an ELFObjectFile.
-inline std::error_code GetELFSymbolVersion(const ObjectFile *Obj,
- const SymbolRef &Sym,
- StringRef &Version,
- bool &IsDefault) {
- // Little-endian 32-bit
- if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
- return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
-
- // Big-endian 32-bit
- if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
- return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
-
- // Little-endian 64-bit
- if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
- return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
-
- // Big-endian 64-bit
- if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
- return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
-
- llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
-}
}
}
projects / oota-llvm.git / blobdiff