Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Object/ELFObjectFile.h b/linux-x64/clang/include/llvm/Object/ELFObjectFile.h
new file mode 100644
index 0000000..4d00103
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Object/ELFObjectFile.h
@@ -0,0 +1,1122 @@
+//===- ELFObjectFile.h - ELF object file implementation ---------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the ELFObjectFile template class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OBJECT_ELFOBJECTFILE_H
+#define LLVM_OBJECT_ELFOBJECTFILE_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/MC/SubtargetFeature.h"
+#include "llvm/Object/Binary.h"
+#include "llvm/Object/ELF.h"
+#include "llvm/Object/ELFTypes.h"
+#include "llvm/Object/Error.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/SymbolicFile.h"
+#include "llvm/Support/ARMAttributeParser.h"
+#include "llvm/Support/ARMBuildAttributes.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include <cassert>
+#include <cstdint>
+#include <system_error>
+
+namespace llvm {
+namespace object {
+
+class elf_symbol_iterator;
+
+class ELFObjectFileBase : public ObjectFile {
+ friend class ELFRelocationRef;
+ friend class ELFSectionRef;
+ friend class ELFSymbolRef;
+
+protected:
+ ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source);
+
+ virtual uint16_t getEMachine() 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;
+
+ virtual uint32_t getSectionType(DataRefImpl Sec) const = 0;
+ virtual uint64_t getSectionFlags(DataRefImpl Sec) const = 0;
+ virtual uint64_t getSectionOffset(DataRefImpl Sec) const = 0;
+
+ virtual Expected<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
+
+public:
+ using elf_symbol_iterator_range = iterator_range<elf_symbol_iterator>;
+
+ virtual elf_symbol_iterator_range getDynamicSymbolIterators() const = 0;
+
+ /// Returns platform-specific object flags, if any.
+ virtual unsigned getPlatformFlags() const = 0;
+
+ elf_symbol_iterator_range symbols() const;
+
+ static bool classof(const Binary *v) { return v->isELF(); }
+
+ SubtargetFeatures getFeatures() const override;
+
+ SubtargetFeatures getMIPSFeatures() const;
+
+ SubtargetFeatures getARMFeatures() const;
+
+ SubtargetFeatures getRISCVFeatures() const;
+
+ void setARMSubArch(Triple &TheTriple) const override;
+};
+
+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());
+ }
+
+ uint64_t getOffset() const {
+ return getObject()->getSectionOffset(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());
+ }
+
+ Expected<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 {
+ uint16_t getEMachine() const override;
+ uint64_t getSymbolSize(DataRefImpl Sym) const override;
+
+public:
+ LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+
+ using uintX_t = typename ELFT::uint;
+
+ using Elf_Sym = typename ELFT::Sym;
+ using Elf_Shdr = typename ELFT::Shdr;
+ using Elf_Ehdr = typename ELFT::Ehdr;
+ using Elf_Rel = typename ELFT::Rel;
+ using Elf_Rela = typename ELFT::Rela;
+ using Elf_Dyn = typename ELFT::Dyn;
+
+private:
+ ELFObjectFile(MemoryBufferRef Object, ELFFile<ELFT> EF,
+ const Elf_Shdr *DotDynSymSec, const Elf_Shdr *DotSymtabSec,
+ ArrayRef<Elf_Word> ShndxTable);
+
+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;
+ Expected<StringRef> getSymbolName(DataRefImpl Symb) const override;
+ Expected<uint64_t> getSymbolAddress(DataRefImpl Symb) const override;
+ uint64_t getSymbolValueImpl(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;
+ uint8_t getSymbolOther(DataRefImpl Symb) const override;
+ uint8_t getSymbolELFType(DataRefImpl Symb) const override;
+ Expected<SymbolRef::Type> getSymbolType(DataRefImpl Symb) const override;
+ Expected<section_iterator> getSymbolSection(const Elf_Sym *Symb,
+ const Elf_Shdr *SymTab) const;
+ Expected<section_iterator> getSymbolSection(DataRefImpl Symb) const override;
+
+ void moveSectionNext(DataRefImpl &Sec) const override;
+ std::error_code getSectionName(DataRefImpl Sec,
+ StringRef &Res) const override;
+ uint64_t getSectionAddress(DataRefImpl Sec) const override;
+ uint64_t getSectionIndex(DataRefImpl Sec) const override;
+ uint64_t getSectionSize(DataRefImpl Sec) const override;
+ std::error_code getSectionContents(DataRefImpl Sec,
+ StringRef &Res) const override;
+ uint64_t getSectionAlignment(DataRefImpl Sec) const override;
+ bool isSectionCompressed(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;
+ 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;
+ uint64_t getRelocationOffset(DataRefImpl Rel) const override;
+ symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
+ uint64_t getRelocationType(DataRefImpl Rel) const override;
+ void getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const override;
+
+ uint32_t getSectionType(DataRefImpl Sec) const override;
+ uint64_t getSectionFlags(DataRefImpl Sec) const override;
+ uint64_t getSectionOffset(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 {
+ auto RelSecOrErr = EF.getSection(Rel.d.a);
+ if (!RelSecOrErr)
+ report_fatal_error(errorToErrorCode(RelSecOrErr.takeError()).message());
+ return *RelSecOrErr;
+ }
+
+ 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);
+
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr) {
+ DRI.d.a = 0;
+ DRI.d.b = 0;
+ return DRI;
+ }
+ uintptr_t SHT = reinterpret_cast<uintptr_t>((*SectionsOrErr).begin());
+ unsigned SymTableIndex =
+ (reinterpret_cast<uintptr_t>(SymTable) - SHT) / sizeof(Elf_Shdr);
+
+ DRI.d.a = SymTableIndex;
+ DRI.d.b = SymbolNum;
+ return DRI;
+ }
+
+ const Elf_Shdr *toELFShdrIter(DataRefImpl Sec) const {
+ return reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ }
+
+ DataRefImpl toDRI(const Elf_Shdr *Sec) const {
+ DataRefImpl DRI;
+ DRI.p = reinterpret_cast<uintptr_t>(Sec);
+ return DRI;
+ }
+
+ DataRefImpl toDRI(const Elf_Dyn *Dyn) const {
+ DataRefImpl DRI;
+ DRI.p = reinterpret_cast<uintptr_t>(Dyn);
+ 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.
+ return ((Binding == ELF::STB_GLOBAL || Binding == ELF::STB_WEAK) &&
+ (Visibility == ELF::STV_DEFAULT ||
+ Visibility == ELF::STV_PROTECTED));
+ }
+
+ // 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(ELFObjectFile<ELFT> &&Other);
+ static Expected<ELFObjectFile<ELFT>> create(MemoryBufferRef Object);
+
+ const Elf_Rel *getRel(DataRefImpl Rel) const;
+ const Elf_Rela *getRela(DataRefImpl Rela) const;
+
+ const Elf_Sym *getSymbol(DataRefImpl Sym) const {
+ auto Ret = EF.template getEntry<Elf_Sym>(Sym.d.a, Sym.d.b);
+ if (!Ret)
+ report_fatal_error(errorToErrorCode(Ret.takeError()).message());
+ return *Ret;
+ }
+
+ const Elf_Shdr *getSection(DataRefImpl Sec) const {
+ return reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ }
+
+ basic_symbol_iterator symbol_begin() const override;
+ basic_symbol_iterator symbol_end() const override;
+
+ 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;
+
+ Expected<int64_t> getRelocationAddend(DataRefImpl Rel) const override;
+
+ uint8_t getBytesInAddress() const override;
+ StringRef getFileFormatName() const override;
+ Triple::ArchType getArch() const override;
+
+ unsigned getPlatformFlags() const override { return EF.getHeader()->e_flags; }
+
+ std::error_code getBuildAttributes(ARMAttributeParser &Attributes) const override {
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr)
+ return errorToErrorCode(SectionsOrErr.takeError());
+
+ for (const Elf_Shdr &Sec : *SectionsOrErr) {
+ if (Sec.sh_type == ELF::SHT_ARM_ATTRIBUTES) {
+ auto ErrorOrContents = EF.getSectionContents(&Sec);
+ if (!ErrorOrContents)
+ return errorToErrorCode(ErrorOrContents.takeError());
+
+ auto Contents = ErrorOrContents.get();
+ if (Contents[0] != ARMBuildAttrs::Format_Version || Contents.size() == 1)
+ return std::error_code();
+
+ Attributes.Parse(Contents, ELFT::TargetEndianness == support::little);
+ break;
+ }
+ }
+ return std::error_code();
+ }
+
+ const ELFFile<ELFT> *getELFFile() const { return &EF; }
+
+ bool isDyldType() const { return isDyldELFObject; }
+ static bool classof(const Binary *v) {
+ return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
+ ELFT::Is64Bits);
+ }
+
+ elf_symbol_iterator_range getDynamicSymbolIterators() const override;
+
+ bool isRelocatableObject() const override;
+};
+
+using ELF32LEObjectFile = ELFObjectFile<ELF32LE>;
+using ELF64LEObjectFile = ELFObjectFile<ELF64LE>;
+using ELF32BEObjectFile = ELFObjectFile<ELF32BE>;
+using ELF64BEObjectFile = ELFObjectFile<ELF64BE>;
+
+template <class ELFT>
+void ELFObjectFile<ELFT>::moveSymbolNext(DataRefImpl &Sym) const {
+ ++Sym.d.b;
+}
+
+template <class ELFT>
+Expected<StringRef> ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Sym) const {
+ const Elf_Sym *ESym = getSymbol(Sym);
+ auto SymTabOrErr = EF.getSection(Sym.d.a);
+ if (!SymTabOrErr)
+ return SymTabOrErr.takeError();
+ const Elf_Shdr *SymTableSec = *SymTabOrErr;
+ auto StrTabOrErr = EF.getSection(SymTableSec->sh_link);
+ if (!StrTabOrErr)
+ return StrTabOrErr.takeError();
+ const Elf_Shdr *StringTableSec = *StrTabOrErr;
+ auto SymStrTabOrErr = EF.getStringTable(StringTableSec);
+ if (!SymStrTabOrErr)
+ return SymStrTabOrErr.takeError();
+ return ESym->getName(*SymStrTabOrErr);
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionFlags(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_flags;
+}
+
+template <class ELFT>
+uint32_t ELFObjectFile<ELFT>::getSectionType(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_type;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionOffset(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_offset;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSymbolValueImpl(DataRefImpl Symb) const {
+ const Elf_Sym *ESym = getSymbol(Symb);
+ 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>
+Expected<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:
+ case ELF::SHN_ABS:
+ return Result;
+ }
+
+ const Elf_Ehdr *Header = EF.getHeader();
+ auto SymTabOrErr = EF.getSection(Symb.d.a);
+ if (!SymTabOrErr)
+ return SymTabOrErr.takeError();
+ const Elf_Shdr *SymTab = *SymTabOrErr;
+
+ if (Header->e_type == ELF::ET_REL) {
+ auto SectionOrErr = EF.getSection(ESym, SymTab, ShndxTable);
+ if (!SectionOrErr)
+ return SectionOrErr.takeError();
+ const Elf_Shdr *Section = *SectionOrErr;
+ if (Section)
+ Result += Section->sh_addr;
+ }
+
+ return Result;
+}
+
+template <class ELFT>
+uint32_t ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb) const {
+ const Elf_Sym *Sym = getSymbol(Symb);
+ if (Sym->st_shndx == ELF::SHN_COMMON)
+ return Sym->st_value;
+ return 0;
+}
+
+template <class ELFT>
+uint16_t ELFObjectFile<ELFT>::getEMachine() const {
+ return EF.getHeader()->e_machine;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Sym) const {
+ return getSymbol(Sym)->st_size;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getCommonSymbolSizeImpl(DataRefImpl Symb) const {
+ return getSymbol(Symb)->st_size;
+}
+
+template <class ELFT>
+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>
+Expected<SymbolRef::Type>
+ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb) const {
+ const Elf_Sym *ESym = getSymbol(Symb);
+
+ switch (ESym->getType()) {
+ case ELF::STT_NOTYPE:
+ return SymbolRef::ST_Unknown;
+ case ELF::STT_SECTION:
+ return SymbolRef::ST_Debug;
+ case ELF::STT_FILE:
+ return SymbolRef::ST_File;
+ case ELF::STT_FUNC:
+ return SymbolRef::ST_Function;
+ case ELF::STT_OBJECT:
+ case ELF::STT_COMMON:
+ case ELF::STT_TLS:
+ return SymbolRef::ST_Data;
+ default:
+ return SymbolRef::ST_Other;
+ }
+}
+
+template <class ELFT>
+uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Sym) const {
+ const Elf_Sym *ESym = getSymbol(Sym);
+
+ uint32_t Result = SymbolRef::SF_None;
+
+ if (ESym->getBinding() != ELF::STB_LOCAL)
+ Result |= SymbolRef::SF_Global;
+
+ if (ESym->getBinding() == ELF::STB_WEAK)
+ Result |= SymbolRef::SF_Weak;
+
+ if (ESym->st_shndx == ELF::SHN_ABS)
+ Result |= SymbolRef::SF_Absolute;
+
+ if (ESym->getType() == ELF::STT_FILE || ESym->getType() == ELF::STT_SECTION)
+ Result |= SymbolRef::SF_FormatSpecific;
+
+ auto DotSymtabSecSyms = EF.symbols(DotSymtabSec);
+ if (DotSymtabSecSyms && ESym == (*DotSymtabSecSyms).begin())
+ Result |= SymbolRef::SF_FormatSpecific;
+ auto DotDynSymSecSyms = EF.symbols(DotDynSymSec);
+ if (DotDynSymSecSyms && ESym == (*DotDynSymSecSyms).begin())
+ Result |= SymbolRef::SF_FormatSpecific;
+
+ if (EF.getHeader()->e_machine == ELF::EM_ARM) {
+ if (Expected<StringRef> NameOrErr = getSymbolName(Sym)) {
+ StringRef Name = *NameOrErr;
+ if (Name.startswith("$d") || Name.startswith("$t") ||
+ Name.startswith("$a"))
+ Result |= SymbolRef::SF_FormatSpecific;
+ } else {
+ // TODO: Actually report errors helpfully.
+ consumeError(NameOrErr.takeError());
+ }
+ if (ESym->getType() == ELF::STT_FUNC && (ESym->st_value & 1) == 1)
+ Result |= SymbolRef::SF_Thumb;
+ }
+
+ if (ESym->st_shndx == ELF::SHN_UNDEF)
+ Result |= SymbolRef::SF_Undefined;
+
+ 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>
+Expected<section_iterator>
+ELFObjectFile<ELFT>::getSymbolSection(const Elf_Sym *ESym,
+ const Elf_Shdr *SymTab) const {
+ auto ESecOrErr = EF.getSection(ESym, SymTab, ShndxTable);
+ if (!ESecOrErr)
+ return ESecOrErr.takeError();
+
+ const Elf_Shdr *ESec = *ESecOrErr;
+ if (!ESec)
+ return section_end();
+
+ DataRefImpl Sec;
+ Sec.p = reinterpret_cast<intptr_t>(ESec);
+ return section_iterator(SectionRef(Sec, this));
+}
+
+template <class ELFT>
+Expected<section_iterator>
+ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb) const {
+ const Elf_Sym *Sym = getSymbol(Symb);
+ auto SymTabOrErr = EF.getSection(Symb.d.a);
+ if (!SymTabOrErr)
+ return SymTabOrErr.takeError();
+ const Elf_Shdr *SymTab = *SymTabOrErr;
+ return getSymbolSection(Sym, SymTab);
+}
+
+template <class ELFT>
+void ELFObjectFile<ELFT>::moveSectionNext(DataRefImpl &Sec) const {
+ const Elf_Shdr *ESec = getSection(Sec);
+ Sec = toDRI(++ESec);
+}
+
+template <class ELFT>
+std::error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
+ StringRef &Result) const {
+ auto Name = EF.getSectionName(&*getSection(Sec));
+ if (!Name)
+ return errorToErrorCode(Name.takeError());
+ Result = *Name;
+ return std::error_code();
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_addr;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionIndex(DataRefImpl Sec) const {
+ auto SectionsOrErr = EF.sections();
+ handleAllErrors(std::move(SectionsOrErr.takeError()),
+ [](const ErrorInfoBase &) {
+ llvm_unreachable("unable to get section index");
+ });
+ const Elf_Shdr *First = SectionsOrErr->begin();
+ return getSection(Sec) - First;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_size;
+}
+
+template <class ELFT>
+std::error_code
+ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
+ StringRef &Result) const {
+ const Elf_Shdr *EShdr = getSection(Sec);
+ if (std::error_code EC =
+ checkOffset(getMemoryBufferRef(),
+ (uintptr_t)base() + EShdr->sh_offset, EShdr->sh_size))
+ return EC;
+ 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 getSection(Sec)->sh_addralign;
+}
+
+template <class ELFT>
+bool ELFObjectFile<ELFT>::isSectionCompressed(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_flags & ELF::SHF_COMPRESSED;
+}
+
+template <class ELFT>
+bool ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec) const {
+ return getSection(Sec)->sh_flags & ELF::SHF_EXECINSTR;
+}
+
+template <class ELFT>
+bool ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec) const {
+ 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 {
+ 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 getSection(Sec)->sh_type == ELF::SHT_NOBITS;
+}
+
+template <class ELFT>
+relocation_iterator
+ELFObjectFile<ELFT>::section_rel_begin(DataRefImpl Sec) const {
+ DataRefImpl RelData;
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr)
+ return relocation_iterator(RelocationRef());
+ uintptr_t SHT = reinterpret_cast<uintptr_t>((*SectionsOrErr).begin());
+ RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
+ RelData.d.b = 0;
+ return relocation_iterator(RelocationRef(RelData, this));
+}
+
+template <class ELFT>
+relocation_iterator
+ELFObjectFile<ELFT>::section_rel_end(DataRefImpl Sec) const {
+ const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ relocation_iterator Begin = section_rel_begin(Sec);
+ if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
+ return Begin;
+ DataRefImpl RelData = Begin->getRawDataRefImpl();
+ const Elf_Shdr *RelSec = getRelSection(RelData);
+
+ // Error check sh_link here so that getRelocationSymbol can just use it.
+ auto SymSecOrErr = EF.getSection(RelSec->sh_link);
+ if (!SymSecOrErr)
+ report_fatal_error(errorToErrorCode(SymSecOrErr.takeError()).message());
+
+ RelData.d.b += S->sh_size / S->sh_entsize;
+ return relocation_iterator(RelocationRef(RelData, this));
+}
+
+template <class ELFT>
+section_iterator
+ELFObjectFile<ELFT>::getRelocatedSection(DataRefImpl Sec) const {
+ if (EF.getHeader()->e_type != ELF::ET_REL)
+ return section_end();
+
+ const Elf_Shdr *EShdr = getSection(Sec);
+ uintX_t Type = EShdr->sh_type;
+ if (Type != ELF::SHT_REL && Type != ELF::SHT_RELA)
+ return section_end();
+
+ auto R = EF.getSection(EShdr->sh_info);
+ if (!R)
+ report_fatal_error(errorToErrorCode(R.takeError()).message());
+ return section_iterator(SectionRef(toDRI(*R), this));
+}
+
+// Relocations
+template <class ELFT>
+void ELFObjectFile<ELFT>::moveRelocationNext(DataRefImpl &Rel) const {
+ ++Rel.d.b;
+}
+
+template <class ELFT>
+symbol_iterator
+ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel) const {
+ uint32_t symbolIdx;
+ const Elf_Shdr *sec = getRelSection(Rel);
+ if (sec->sh_type == ELF::SHT_REL)
+ symbolIdx = getRel(Rel)->getSymbol(EF.isMips64EL());
+ else
+ symbolIdx = getRela(Rel)->getSymbol(EF.isMips64EL());
+ if (!symbolIdx)
+ return symbol_end();
+
+ // FIXME: error check symbolIdx
+ DataRefImpl SymbolData;
+ SymbolData.d.a = sec->sh_link;
+ SymbolData.d.b = symbolIdx;
+ return symbol_iterator(SymbolRef(SymbolData, this));
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel) const {
+ assert(EF.getHeader()->e_type == ELF::ET_REL &&
+ "Only relocatable object files have relocation offsets");
+ const Elf_Shdr *sec = getRelSection(Rel);
+ if (sec->sh_type == ELF::SHT_REL)
+ return getRel(Rel)->r_offset;
+
+ return getRela(Rel)->r_offset;
+}
+
+template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel) const {
+ const Elf_Shdr *sec = getRelSection(Rel);
+ if (sec->sh_type == ELF::SHT_REL)
+ return getRel(Rel)->getType(EF.isMips64EL());
+ else
+ return getRela(Rel)->getType(EF.isMips64EL());
+}
+
+template <class ELFT>
+StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
+ return getELFRelocationTypeName(EF.getHeader()->e_machine, Type);
+}
+
+template <class ELFT>
+void ELFObjectFile<ELFT>::getRelocationTypeName(
+ DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
+ uint32_t type = getRelocationType(Rel);
+ EF.getRelocationTypeName(type, Result);
+}
+
+template <class ELFT>
+Expected<int64_t>
+ELFObjectFile<ELFT>::getRelocationAddend(DataRefImpl Rel) const {
+ if (getRelSection(Rel)->sh_type != ELF::SHT_RELA)
+ return createError("Section is not SHT_RELA");
+ return (int64_t)getRela(Rel)->r_addend;
+}
+
+template <class ELFT>
+const typename ELFObjectFile<ELFT>::Elf_Rel *
+ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
+ assert(getRelSection(Rel)->sh_type == ELF::SHT_REL);
+ auto Ret = EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
+ if (!Ret)
+ report_fatal_error(errorToErrorCode(Ret.takeError()).message());
+ return *Ret;
+}
+
+template <class ELFT>
+const typename ELFObjectFile<ELFT>::Elf_Rela *
+ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
+ assert(getRelSection(Rela)->sh_type == ELF::SHT_RELA);
+ auto Ret = EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
+ if (!Ret)
+ report_fatal_error(errorToErrorCode(Ret.takeError()).message());
+ return *Ret;
+}
+
+template <class ELFT>
+Expected<ELFObjectFile<ELFT>>
+ELFObjectFile<ELFT>::create(MemoryBufferRef Object) {
+ auto EFOrErr = ELFFile<ELFT>::create(Object.getBuffer());
+ if (Error E = EFOrErr.takeError())
+ return std::move(E);
+ auto EF = std::move(*EFOrErr);
+
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr)
+ return SectionsOrErr.takeError();
+
+ const Elf_Shdr *DotDynSymSec = nullptr;
+ const Elf_Shdr *DotSymtabSec = nullptr;
+ ArrayRef<Elf_Word> ShndxTable;
+ for (const Elf_Shdr &Sec : *SectionsOrErr) {
+ switch (Sec.sh_type) {
+ case ELF::SHT_DYNSYM: {
+ if (DotDynSymSec)
+ return createError("More than one dynamic symbol table!");
+ DotDynSymSec = &Sec;
+ break;
+ }
+ case ELF::SHT_SYMTAB: {
+ if (DotSymtabSec)
+ return createError("More than one static symbol table!");
+ DotSymtabSec = &Sec;
+ break;
+ }
+ case ELF::SHT_SYMTAB_SHNDX: {
+ auto TableOrErr = EF.getSHNDXTable(Sec);
+ if (!TableOrErr)
+ return TableOrErr.takeError();
+ ShndxTable = *TableOrErr;
+ break;
+ }
+ }
+ }
+ return ELFObjectFile<ELFT>(Object, EF, DotDynSymSec, DotSymtabSec,
+ ShndxTable);
+}
+
+template <class ELFT>
+ELFObjectFile<ELFT>::ELFObjectFile(MemoryBufferRef Object, ELFFile<ELFT> EF,
+ const Elf_Shdr *DotDynSymSec,
+ const Elf_Shdr *DotSymtabSec,
+ ArrayRef<Elf_Word> ShndxTable)
+ : ELFObjectFileBase(
+ getELFType(ELFT::TargetEndianness == support::little, ELFT::Is64Bits),
+ Object),
+ EF(EF), DotDynSymSec(DotDynSymSec), DotSymtabSec(DotSymtabSec),
+ ShndxTable(ShndxTable) {}
+
+template <class ELFT>
+ELFObjectFile<ELFT>::ELFObjectFile(ELFObjectFile<ELFT> &&Other)
+ : ELFObjectFile(Other.Data, Other.EF, Other.DotDynSymSec,
+ Other.DotSymtabSec, Other.ShndxTable) {}
+
+template <class ELFT>
+basic_symbol_iterator ELFObjectFile<ELFT>::symbol_begin() const {
+ DataRefImpl Sym = toDRI(DotSymtabSec, 0);
+ return basic_symbol_iterator(SymbolRef(Sym, this));
+}
+
+template <class ELFT>
+basic_symbol_iterator ELFObjectFile<ELFT>::symbol_end() const {
+ const Elf_Shdr *SymTab = DotSymtabSec;
+ if (!SymTab)
+ return symbol_begin();
+ DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
+ return basic_symbol_iterator(SymbolRef(Sym, this));
+}
+
+template <class ELFT>
+elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
+ DataRefImpl Sym = toDRI(DotDynSymSec, 0);
+ return symbol_iterator(SymbolRef(Sym, this));
+}
+
+template <class ELFT>
+elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_end() const {
+ const Elf_Shdr *SymTab = DotDynSymSec;
+ if (!SymTab)
+ return dynamic_symbol_begin();
+ 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 {
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr)
+ return section_iterator(SectionRef());
+ return section_iterator(SectionRef(toDRI((*SectionsOrErr).begin()), this));
+}
+
+template <class ELFT>
+section_iterator ELFObjectFile<ELFT>::section_end() const {
+ auto SectionsOrErr = EF.sections();
+ if (!SectionsOrErr)
+ return section_iterator(SectionRef());
+ return section_iterator(SectionRef(toDRI((*SectionsOrErr).end()), 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_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_LANAI:
+ return "ELF32-lanai";
+ case ELF::EM_MIPS:
+ return "ELF32-mips";
+ case ELF::EM_PPC:
+ return "ELF32-ppc";
+ case ELF::EM_RISCV:
+ return "ELF32-riscv";
+ case ELF::EM_SPARC:
+ case ELF::EM_SPARC32PLUS:
+ return "ELF32-sparc";
+ case ELF::EM_WEBASSEMBLY:
+ return "ELF32-wasm";
+ case ELF::EM_AMDGPU:
+ return "ELF32-amdgpu";
+ default:
+ return "ELF32-unknown";
+ }
+ case ELF::ELFCLASS64:
+ switch (EF.getHeader()->e_machine) {
+ case ELF::EM_386:
+ return "ELF64-i386";
+ case ELF::EM_X86_64:
+ return "ELF64-x86-64";
+ case ELF::EM_AARCH64:
+ return (IsLittleEndian ? "ELF64-aarch64-little" : "ELF64-aarch64-big");
+ case ELF::EM_PPC64:
+ return "ELF64-ppc64";
+ case ELF::EM_RISCV:
+ return "ELF64-riscv";
+ case ELF::EM_S390:
+ return "ELF64-s390";
+ case ELF::EM_SPARCV9:
+ return "ELF64-sparc";
+ case ELF::EM_MIPS:
+ return "ELF64-mips";
+ case ELF::EM_WEBASSEMBLY:
+ return "ELF64-wasm";
+ case ELF::EM_AMDGPU:
+ return "ELF64-amdgpu";
+ case ELF::EM_BPF:
+ return "ELF64-BPF";
+ default:
+ return "ELF64-unknown";
+ }
+ default:
+ // FIXME: Proper error handling.
+ report_fatal_error("Invalid ELFCLASS!");
+ }
+}
+
+template <class ELFT> Triple::ArchType ELFObjectFile<ELFT>::getArch() const {
+ 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;
+ case ELF::EM_AARCH64:
+ return IsLittleEndian ? Triple::aarch64 : Triple::aarch64_be;
+ case ELF::EM_ARM:
+ return Triple::arm;
+ case ELF::EM_AVR:
+ return Triple::avr;
+ case ELF::EM_HEXAGON:
+ return Triple::hexagon;
+ case ELF::EM_LANAI:
+ return Triple::lanai;
+ case ELF::EM_MIPS:
+ switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
+ case ELF::ELFCLASS32:
+ return IsLittleEndian ? Triple::mipsel : Triple::mips;
+ case ELF::ELFCLASS64:
+ return IsLittleEndian ? Triple::mips64el : Triple::mips64;
+ 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_RISCV:
+ switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
+ case ELF::ELFCLASS32:
+ return Triple::riscv32;
+ case ELF::ELFCLASS64:
+ return Triple::riscv64;
+ default:
+ report_fatal_error("Invalid ELFCLASS!");
+ }
+ case ELF::EM_S390:
+ return Triple::systemz;
+
+ case ELF::EM_SPARC:
+ case ELF::EM_SPARC32PLUS:
+ return IsLittleEndian ? Triple::sparcel : Triple::sparc;
+ case ELF::EM_SPARCV9:
+ return Triple::sparcv9;
+ case ELF::EM_WEBASSEMBLY:
+ switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
+ case ELF::ELFCLASS32: return Triple::wasm32;
+ case ELF::ELFCLASS64: return Triple::wasm64;
+ default: return Triple::UnknownArch;
+ }
+
+ case ELF::EM_AMDGPU: {
+ if (!IsLittleEndian)
+ return Triple::UnknownArch;
+
+ unsigned MACH = EF.getHeader()->e_flags & ELF::EF_AMDGPU_MACH;
+ if (MACH >= ELF::EF_AMDGPU_MACH_R600_FIRST &&
+ MACH <= ELF::EF_AMDGPU_MACH_R600_LAST)
+ return Triple::r600;
+ if (MACH >= ELF::EF_AMDGPU_MACH_AMDGCN_FIRST &&
+ MACH <= ELF::EF_AMDGPU_MACH_AMDGCN_LAST)
+ return Triple::amdgcn;
+
+ return Triple::UnknownArch;
+ }
+
+ case ELF::EM_BPF:
+ return IsLittleEndian ? Triple::bpfel : Triple::bpfeb;
+
+ default:
+ return Triple::UnknownArch;
+ }
+}
+
+template <class ELFT>
+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;
+}
+
+} // end namespace object
+} // end namespace llvm
+
+#endif // LLVM_OBJECT_ELFOBJECTFILE_H