| //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file implements the ELF-specific dumper for llvm-readobj. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "ARMEHABIPrinter.h" |
| #include "DwarfCFIEHPrinter.h" |
| #include "ObjDumper.h" |
| #include "StackMapPrinter.h" |
| #include "llvm-readobj.h" |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/ADT/MapVector.h" |
| #include "llvm/ADT/Optional.h" |
| #include "llvm/ADT/PointerIntPair.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/BinaryFormat/AMDGPUMetadataVerifier.h" |
| #include "llvm/BinaryFormat/ELF.h" |
| #include "llvm/Demangle/Demangle.h" |
| #include "llvm/Object/ELF.h" |
| #include "llvm/Object/ELFObjectFile.h" |
| #include "llvm/Object/ELFTypes.h" |
| #include "llvm/Object/Error.h" |
| #include "llvm/Object/ObjectFile.h" |
| #include "llvm/Object/RelocationResolver.h" |
| #include "llvm/Object/StackMapParser.h" |
| #include "llvm/Support/AMDGPUMetadata.h" |
| #include "llvm/Support/ARMAttributeParser.h" |
| #include "llvm/Support/ARMBuildAttributes.h" |
| #include "llvm/Support/Casting.h" |
| #include "llvm/Support/Compiler.h" |
| #include "llvm/Support/Endian.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/Format.h" |
| #include "llvm/Support/FormatVariadic.h" |
| #include "llvm/Support/FormattedStream.h" |
| #include "llvm/Support/LEB128.h" |
| #include "llvm/Support/MathExtras.h" |
| #include "llvm/Support/MipsABIFlags.h" |
| #include "llvm/Support/RISCVAttributeParser.h" |
| #include "llvm/Support/RISCVAttributes.h" |
| #include "llvm/Support/ScopedPrinter.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <algorithm> |
| #include <cinttypes> |
| #include <cstddef> |
| #include <cstdint> |
| #include <cstdlib> |
| #include <iterator> |
| #include <memory> |
| #include <string> |
| #include <system_error> |
| #include <unordered_set> |
| #include <vector> |
| |
| using namespace llvm; |
| using namespace llvm::object; |
| using namespace ELF; |
| |
| #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ |
| case ns::enum: \ |
| return #enum; |
| |
| #define ENUM_ENT(enum, altName) \ |
| { #enum, altName, ELF::enum } |
| |
| #define ENUM_ENT_1(enum) \ |
| { #enum, #enum, ELF::enum } |
| |
| #define TYPEDEF_ELF_TYPES(ELFT) \ |
| using ELFO = ELFFile<ELFT>; \ |
| using Elf_Addr = typename ELFT::Addr; \ |
| using Elf_Shdr = typename ELFT::Shdr; \ |
| using Elf_Sym = typename ELFT::Sym; \ |
| using Elf_Dyn = typename ELFT::Dyn; \ |
| using Elf_Dyn_Range = typename ELFT::DynRange; \ |
| using Elf_Rel = typename ELFT::Rel; \ |
| using Elf_Rela = typename ELFT::Rela; \ |
| using Elf_Relr = typename ELFT::Relr; \ |
| using Elf_Rel_Range = typename ELFT::RelRange; \ |
| using Elf_Rela_Range = typename ELFT::RelaRange; \ |
| using Elf_Relr_Range = typename ELFT::RelrRange; \ |
| using Elf_Phdr = typename ELFT::Phdr; \ |
| using Elf_Half = typename ELFT::Half; \ |
| using Elf_Ehdr = typename ELFT::Ehdr; \ |
| using Elf_Word = typename ELFT::Word; \ |
| using Elf_Hash = typename ELFT::Hash; \ |
| using Elf_GnuHash = typename ELFT::GnuHash; \ |
| using Elf_Note = typename ELFT::Note; \ |
| using Elf_Sym_Range = typename ELFT::SymRange; \ |
| using Elf_Versym = typename ELFT::Versym; \ |
| using Elf_Verneed = typename ELFT::Verneed; \ |
| using Elf_Vernaux = typename ELFT::Vernaux; \ |
| using Elf_Verdef = typename ELFT::Verdef; \ |
| using Elf_Verdaux = typename ELFT::Verdaux; \ |
| using Elf_CGProfile = typename ELFT::CGProfile; \ |
| using uintX_t = typename ELFT::uint; |
| |
| namespace { |
| |
| template <class ELFT> class DumpStyle; |
| |
| template <class ELFT> struct RelSymbol { |
| RelSymbol(const typename ELFT::Sym *S, StringRef N) |
| : Sym(S), Name(N.str()) {} |
| const typename ELFT::Sym *Sym; |
| std::string Name; |
| }; |
| |
| /// Represents a contiguous uniform range in the file. We cannot just create a |
| /// range directly because when creating one of these from the .dynamic table |
| /// the size, entity size and virtual address are different entries in arbitrary |
| /// order (DT_REL, DT_RELSZ, DT_RELENT for example). |
| struct DynRegionInfo { |
| DynRegionInfo(const Binary &Owner) : Obj(&Owner) {} |
| DynRegionInfo(const Binary &Owner, const uint8_t *A, uint64_t S, uint64_t ES) |
| : Addr(A), Size(S), EntSize(ES), Obj(&Owner) {} |
| |
| /// Address in current address space. |
| const uint8_t *Addr = nullptr; |
| /// Size in bytes of the region. |
| uint64_t Size = 0; |
| /// Size of each entity in the region. |
| uint64_t EntSize = 0; |
| |
| /// Owner object. Used for error reporting. |
| const Binary *Obj; |
| /// Error prefix. Used for error reporting to provide more information. |
| std::string Context; |
| /// Region size name. Used for error reporting. |
| StringRef SizePrintName = "size"; |
| /// Entry size name. Used for error reporting. If this field is empty, errors |
| /// will not mention the entry size. |
| StringRef EntSizePrintName = "entry size"; |
| |
| template <typename Type> ArrayRef<Type> getAsArrayRef() const { |
| const Type *Start = reinterpret_cast<const Type *>(Addr); |
| if (!Start) |
| return {Start, Start}; |
| |
| const uint64_t Offset = |
| Addr - (const uint8_t *)Obj->getMemoryBufferRef().getBufferStart(); |
| const uint64_t ObjSize = Obj->getMemoryBufferRef().getBufferSize(); |
| |
| if (Size > ObjSize - Offset) { |
| reportWarning( |
| createError("unable to read data at 0x" + Twine::utohexstr(Offset) + |
| " of size 0x" + Twine::utohexstr(Size) + " (" + |
| SizePrintName + |
| "): it goes past the end of the file of size 0x" + |
| Twine::utohexstr(ObjSize)), |
| Obj->getFileName()); |
| return {Start, Start}; |
| } |
| |
| if (EntSize == sizeof(Type) && (Size % EntSize == 0)) |
| return {Start, Start + (Size / EntSize)}; |
| |
| std::string Msg; |
| if (!Context.empty()) |
| Msg += Context + " has "; |
| |
| Msg += ("invalid " + SizePrintName + " (0x" + Twine::utohexstr(Size) + ")") |
| .str(); |
| if (!EntSizePrintName.empty()) |
| Msg += |
| (" or " + EntSizePrintName + " (0x" + Twine::utohexstr(EntSize) + ")") |
| .str(); |
| |
| reportWarning(createError(Msg.c_str()), Obj->getFileName()); |
| return {Start, Start}; |
| } |
| }; |
| |
| struct GroupMember { |
| StringRef Name; |
| uint64_t Index; |
| }; |
| |
| struct GroupSection { |
| StringRef Name; |
| std::string Signature; |
| uint64_t ShName; |
| uint64_t Index; |
| uint32_t Link; |
| uint32_t Info; |
| uint32_t Type; |
| std::vector<GroupMember> Members; |
| }; |
| |
| namespace { |
| struct VerdAux { |
| unsigned Offset; |
| std::string Name; |
| }; |
| |
| struct VerDef { |
| unsigned Offset; |
| unsigned Version; |
| unsigned Flags; |
| unsigned Ndx; |
| unsigned Cnt; |
| unsigned Hash; |
| std::string Name; |
| std::vector<VerdAux> AuxV; |
| }; |
| |
| struct VernAux { |
| unsigned Hash; |
| unsigned Flags; |
| unsigned Other; |
| unsigned Offset; |
| std::string Name; |
| }; |
| |
| struct VerNeed { |
| unsigned Version; |
| unsigned Cnt; |
| unsigned Offset; |
| std::string File; |
| std::vector<VernAux> AuxV; |
| }; |
| |
| struct NoteType { |
| uint32_t ID; |
| StringRef Name; |
| }; |
| |
| } // namespace |
| |
| template <class ELFT> class Relocation { |
| public: |
| Relocation(const typename ELFT::Rel &R, bool IsMips64EL) |
| : Type(R.getType(IsMips64EL)), Symbol(R.getSymbol(IsMips64EL)), |
| Offset(R.r_offset), Info(R.r_info) {} |
| |
| Relocation(const typename ELFT::Rela &R, bool IsMips64EL) |
| : Relocation((const typename ELFT::Rel &)R, IsMips64EL) { |
| Addend = R.r_addend; |
| } |
| |
| uint32_t Type; |
| uint32_t Symbol; |
| typename ELFT::uint Offset; |
| typename ELFT::uint Info; |
| Optional<int64_t> Addend; |
| }; |
| |
| template <typename ELFT> class ELFDumper : public ObjDumper { |
| public: |
| ELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer); |
| |
| void printFileHeaders() override; |
| void printSectionHeaders() override; |
| void printRelocations() override; |
| void printDependentLibs() override; |
| void printDynamicRelocations() override; |
| void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; |
| void printHashSymbols() override; |
| void printSectionDetails() override; |
| void printUnwindInfo() override; |
| |
| void printDynamicTable() override; |
| void printNeededLibraries() override; |
| void printProgramHeaders(bool PrintProgramHeaders, |
| cl::boolOrDefault PrintSectionMapping) override; |
| void printHashTable() override; |
| void printGnuHashTable() override; |
| void printLoadName() override; |
| void printVersionInfo() override; |
| void printGroupSections() override; |
| |
| void printArchSpecificInfo() override; |
| |
| void printStackMap() const override; |
| |
| void printHashHistograms() override; |
| |
| void printCGProfile() override; |
| void printAddrsig() override; |
| |
| void printNotes() override; |
| |
| void printELFLinkerOptions() override; |
| void printStackSizes() override; |
| |
| const object::ELFObjectFile<ELFT> &getElfObject() const { return ObjF; }; |
| |
| private: |
| std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; |
| |
| TYPEDEF_ELF_TYPES(ELFT) |
| |
| Expected<DynRegionInfo> createDRI(uint64_t Offset, uint64_t Size, |
| uint64_t EntSize) { |
| if (Offset + Size < Offset || Offset + Size > Obj.getBufSize()) |
| return createError("offset (0x" + Twine::utohexstr(Offset) + |
| ") + size (0x" + Twine::utohexstr(Size) + |
| ") is greater than the file size (0x" + |
| Twine::utohexstr(Obj.getBufSize()) + ")"); |
| return DynRegionInfo(ObjF, Obj.base() + Offset, Size, EntSize); |
| } |
| |
| void printAttributes(); |
| void printMipsReginfo(); |
| void printMipsOptions(); |
| |
| std::pair<const Elf_Phdr *, const Elf_Shdr *> findDynamic(); |
| void loadDynamicTable(); |
| void parseDynamicTable(); |
| |
| Expected<StringRef> getSymbolVersion(const Elf_Sym &Sym, |
| bool &IsDefault) const; |
| Error LoadVersionMap() const; |
| |
| const object::ELFObjectFile<ELFT> &ObjF; |
| const ELFFile<ELFT> &Obj; |
| DynRegionInfo DynRelRegion; |
| DynRegionInfo DynRelaRegion; |
| DynRegionInfo DynRelrRegion; |
| DynRegionInfo DynPLTRelRegion; |
| Optional<DynRegionInfo> DynSymRegion; |
| DynRegionInfo DynamicTable; |
| StringRef DynamicStringTable; |
| const Elf_Hash *HashTable = nullptr; |
| const Elf_GnuHash *GnuHashTable = nullptr; |
| const Elf_Shdr *DotSymtabSec = nullptr; |
| const Elf_Shdr *DotDynsymSec = nullptr; |
| const Elf_Shdr *DotCGProfileSec = nullptr; |
| const Elf_Shdr *DotAddrsigSec = nullptr; |
| ArrayRef<Elf_Word> ShndxTable; |
| Optional<uint64_t> SONameOffset; |
| |
| const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version |
| const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r |
| const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d |
| |
| struct VersionEntry { |
| std::string Name; |
| bool IsVerDef; |
| }; |
| mutable SmallVector<Optional<VersionEntry>, 16> VersionMap; |
| |
| std::unordered_set<std::string> Warnings; |
| |
| std::string describe(const Elf_Shdr &Sec) const; |
| |
| public: |
| unsigned getHashTableEntSize() const { |
| // EM_S390 and ELF::EM_ALPHA platforms use 8-bytes entries in SHT_HASH |
| // sections. This violates the ELF specification. |
| if (Obj.getHeader().e_machine == ELF::EM_S390 || |
| Obj.getHeader().e_machine == ELF::EM_ALPHA) |
| return 8; |
| return 4; |
| } |
| |
| Elf_Dyn_Range dynamic_table() const { |
| // A valid .dynamic section contains an array of entries terminated |
| // with a DT_NULL entry. However, sometimes the section content may |
| // continue past the DT_NULL entry, so to dump the section correctly, |
| // we first find the end of the entries by iterating over them. |
| Elf_Dyn_Range Table = DynamicTable.getAsArrayRef<Elf_Dyn>(); |
| |
| size_t Size = 0; |
| while (Size < Table.size()) |
| if (Table[Size++].getTag() == DT_NULL) |
| break; |
| |
| return Table.slice(0, Size); |
| } |
| |
| Optional<DynRegionInfo> getDynSymRegion() const { return DynSymRegion; } |
| |
| Elf_Sym_Range dynamic_symbols() const { |
| if (!DynSymRegion) |
| return Elf_Sym_Range(); |
| return DynSymRegion->getAsArrayRef<Elf_Sym>(); |
| } |
| |
| Elf_Rel_Range dyn_rels() const; |
| Elf_Rela_Range dyn_relas() const; |
| Elf_Relr_Range dyn_relrs() const; |
| std::string getFullSymbolName(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, |
| bool IsDynamic) const; |
| Expected<unsigned> getSymbolSectionIndex(const Elf_Sym &Symbol, |
| unsigned SymIndex) const; |
| Expected<StringRef> getSymbolSectionName(const Elf_Sym &Symbol, |
| unsigned SectionIndex) const; |
| std::string getStaticSymbolName(uint32_t Index) const; |
| StringRef getDynamicString(uint64_t Value) const; |
| Expected<StringRef> getSymbolVersionByIndex(uint32_t VersionSymbolIndex, |
| bool &IsDefault) const; |
| |
| void printSymbolsHelper(bool IsDynamic) const; |
| std::string getDynamicEntry(uint64_t Type, uint64_t Value) const; |
| |
| const Elf_Shdr *findSectionByName(StringRef Name) const; |
| |
| const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } |
| const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; } |
| const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; } |
| ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } |
| StringRef getDynamicStringTable() const { return DynamicStringTable; } |
| const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } |
| const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } |
| const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; } |
| const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } |
| const DynRegionInfo &getDynamicTableRegion() const { return DynamicTable; } |
| const Elf_Hash *getHashTable() const { return HashTable; } |
| const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } |
| |
| Expected<ArrayRef<Elf_Versym>> getVersionTable(const Elf_Shdr &Sec, |
| ArrayRef<Elf_Sym> *SymTab, |
| StringRef *StrTab) const; |
| Expected<std::vector<VerDef>> |
| getVersionDefinitions(const Elf_Shdr &Sec) const; |
| Expected<std::vector<VerNeed>> |
| getVersionDependencies(const Elf_Shdr &Sec) const; |
| |
| Expected<RelSymbol<ELFT>> getRelocationTarget(const Relocation<ELFT> &R, |
| const Elf_Shdr *SymTab) const; |
| |
| std::function<Error(const Twine &Msg)> WarningHandler; |
| void reportUniqueWarning(Error Err) const; |
| }; |
| |
| template <class ELFT> |
| static std::string describe(const ELFFile<ELFT> &Obj, |
| const typename ELFT::Shdr &Sec) { |
| unsigned SecNdx = &Sec - &cantFail(Obj.sections()).front(); |
| return (object::getELFSectionTypeName(Obj.getHeader().e_machine, |
| Sec.sh_type) + |
| " section with index " + Twine(SecNdx)) |
| .str(); |
| } |
| |
| template <class ELFT> |
| std::string ELFDumper<ELFT>::describe(const Elf_Shdr &Sec) const { |
| return ::describe(Obj, Sec); |
| } |
| |
| template <class ELFT> |
| static Expected<StringRef> getLinkAsStrtab(const ELFFile<ELFT> &Obj, |
| const typename ELFT::Shdr &Sec) { |
| Expected<const typename ELFT::Shdr *> StrTabSecOrErr = |
| Obj.getSection(Sec.sh_link); |
| if (!StrTabSecOrErr) |
| return createError("invalid section linked to " + describe(Obj, Sec) + |
| ": " + toString(StrTabSecOrErr.takeError())); |
| |
| Expected<StringRef> StrTabOrErr = Obj.getStringTable(**StrTabSecOrErr); |
| if (!StrTabOrErr) |
| return createError("invalid string table linked to " + describe(Obj, Sec) + |
| ": " + toString(StrTabOrErr.takeError())); |
| return *StrTabOrErr; |
| } |
| |
| // Returns the linked symbol table and associated string table for a given section. |
| template <class ELFT> |
| static Expected<std::pair<typename ELFT::SymRange, StringRef>> |
| getLinkAsSymtab(const ELFFile<ELFT> &Obj, const typename ELFT::Shdr &Sec, |
| unsigned ExpectedType) { |
| Expected<const typename ELFT::Shdr *> SymtabOrErr = |
| Obj.getSection(Sec.sh_link); |
| if (!SymtabOrErr) |
| return createError("invalid section linked to " + describe(Obj, Sec) + |
| ": " + toString(SymtabOrErr.takeError())); |
| |
| if ((*SymtabOrErr)->sh_type != ExpectedType) |
| return createError( |
| "invalid section linked to " + describe(Obj, Sec) + ": expected " + |
| object::getELFSectionTypeName(Obj.getHeader().e_machine, ExpectedType) + |
| ", but got " + |
| object::getELFSectionTypeName(Obj.getHeader().e_machine, |
| (*SymtabOrErr)->sh_type)); |
| |
| Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, **SymtabOrErr); |
| if (!StrTabOrErr) |
| return createError( |
| "can't get a string table for the symbol table linked to " + |
| describe(Obj, Sec) + ": " + toString(StrTabOrErr.takeError())); |
| |
| Expected<typename ELFT::SymRange> SymsOrErr = Obj.symbols(*SymtabOrErr); |
| if (!SymsOrErr) |
| return createError("unable to read symbols from the " + describe(Obj, Sec) + |
| ": " + toString(SymsOrErr.takeError())); |
| |
| return std::make_pair(*SymsOrErr, *StrTabOrErr); |
| } |
| |
| template <class ELFT> |
| Expected<ArrayRef<typename ELFT::Versym>> |
| ELFDumper<ELFT>::getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab, |
| StringRef *StrTab) const { |
| assert((!SymTab && !StrTab) || (SymTab && StrTab)); |
| if (uintptr_t(Obj.base() + Sec.sh_offset) % sizeof(uint16_t) != 0) |
| return createError("the " + describe(Sec) + " is misaligned"); |
| |
| Expected<ArrayRef<Elf_Versym>> VersionsOrErr = |
| Obj.template getSectionContentsAsArray<Elf_Versym>(Sec); |
| if (!VersionsOrErr) |
| return createError("cannot read content of " + describe(Sec) + ": " + |
| toString(VersionsOrErr.takeError())); |
| |
| Expected<std::pair<ArrayRef<Elf_Sym>, StringRef>> SymTabOrErr = |
| getLinkAsSymtab(Obj, Sec, SHT_DYNSYM); |
| if (!SymTabOrErr) { |
| reportUniqueWarning(SymTabOrErr.takeError()); |
| return *VersionsOrErr; |
| } |
| |
| if (SymTabOrErr->first.size() != VersionsOrErr->size()) |
| reportUniqueWarning( |
| createError(describe(Sec) + ": the number of entries (" + |
| Twine(VersionsOrErr->size()) + |
| ") does not match the number of symbols (" + |
| Twine(SymTabOrErr->first.size()) + |
| ") in the symbol table with index " + Twine(Sec.sh_link))); |
| |
| if (SymTab) |
| std::tie(*SymTab, *StrTab) = *SymTabOrErr; |
| return *VersionsOrErr; |
| } |
| |
| template <class ELFT> |
| Expected<std::vector<VerDef>> |
| ELFDumper<ELFT>::getVersionDefinitions(const Elf_Shdr &Sec) const { |
| Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec); |
| if (!StrTabOrErr) |
| return StrTabOrErr.takeError(); |
| |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Sec); |
| if (!ContentsOrErr) |
| return createError("cannot read content of " + describe(Sec) + ": " + |
| toString(ContentsOrErr.takeError())); |
| |
| const uint8_t *Start = ContentsOrErr->data(); |
| const uint8_t *End = Start + ContentsOrErr->size(); |
| |
| auto ExtractNextAux = [&](const uint8_t *&VerdauxBuf, |
| unsigned VerDefNdx) -> Expected<VerdAux> { |
| if (VerdauxBuf + sizeof(Elf_Verdaux) > End) |
| return createError("invalid " + describe(Sec) + ": version definition " + |
| Twine(VerDefNdx) + |
| " refers to an auxiliary entry that goes past the end " |
| "of the section"); |
| |
| auto *Verdaux = reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf); |
| VerdauxBuf += Verdaux->vda_next; |
| |
| VerdAux Aux; |
| Aux.Offset = VerdauxBuf - Start; |
| if (Verdaux->vda_name <= StrTabOrErr->size()) |
| Aux.Name = std::string(StrTabOrErr->drop_front(Verdaux->vda_name)); |
| else |
| Aux.Name = "<invalid vda_name: " + to_string(Verdaux->vda_name) + ">"; |
| return Aux; |
| }; |
| |
| std::vector<VerDef> Ret; |
| const uint8_t *VerdefBuf = Start; |
| for (unsigned I = 1; I <= /*VerDefsNum=*/Sec.sh_info; ++I) { |
| if (VerdefBuf + sizeof(Elf_Verdef) > End) |
| return createError("invalid " + describe(Sec) + ": version definition " + |
| Twine(I) + " goes past the end of the section"); |
| |
| if (uintptr_t(VerdefBuf) % sizeof(uint32_t) != 0) |
| return createError( |
| "invalid " + describe(Sec) + |
| ": found a misaligned version definition entry at offset 0x" + |
| Twine::utohexstr(VerdefBuf - Start)); |
| |
| unsigned Version = *reinterpret_cast<const Elf_Half *>(VerdefBuf); |
| if (Version != 1) |
| return createError("unable to dump " + describe(Sec) + ": version " + |
| Twine(Version) + " is not yet supported"); |
| |
| const Elf_Verdef *D = reinterpret_cast<const Elf_Verdef *>(VerdefBuf); |
| VerDef &VD = *Ret.emplace(Ret.end()); |
| VD.Offset = VerdefBuf - Start; |
| VD.Version = D->vd_version; |
| VD.Flags = D->vd_flags; |
| VD.Ndx = D->vd_ndx; |
| VD.Cnt = D->vd_cnt; |
| VD.Hash = D->vd_hash; |
| |
| const uint8_t *VerdauxBuf = VerdefBuf + D->vd_aux; |
| for (unsigned J = 0; J < D->vd_cnt; ++J) { |
| if (uintptr_t(VerdauxBuf) % sizeof(uint32_t) != 0) |
| return createError("invalid " + describe(Sec) + |
| ": found a misaligned auxiliary entry at offset 0x" + |
| Twine::utohexstr(VerdauxBuf - Start)); |
| |
| Expected<VerdAux> AuxOrErr = ExtractNextAux(VerdauxBuf, I); |
| if (!AuxOrErr) |
| return AuxOrErr.takeError(); |
| |
| if (J == 0) |
| VD.Name = AuxOrErr->Name; |
| else |
| VD.AuxV.push_back(*AuxOrErr); |
| } |
| |
| VerdefBuf += D->vd_next; |
| } |
| |
| return Ret; |
| } |
| |
| template <class ELFT> |
| Expected<std::vector<VerNeed>> |
| ELFDumper<ELFT>::getVersionDependencies(const Elf_Shdr &Sec) const { |
| StringRef StrTab; |
| Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec); |
| if (!StrTabOrErr) |
| reportUniqueWarning(StrTabOrErr.takeError()); |
| else |
| StrTab = *StrTabOrErr; |
| |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Sec); |
| if (!ContentsOrErr) |
| return createError("cannot read content of " + describe(Sec) + ": " + |
| toString(ContentsOrErr.takeError())); |
| |
| const uint8_t *Start = ContentsOrErr->data(); |
| const uint8_t *End = Start + ContentsOrErr->size(); |
| const uint8_t *VerneedBuf = Start; |
| |
| std::vector<VerNeed> Ret; |
| for (unsigned I = 1; I <= /*VerneedNum=*/Sec.sh_info; ++I) { |
| if (VerneedBuf + sizeof(Elf_Verdef) > End) |
| return createError("invalid " + describe(Sec) + ": version dependency " + |
| Twine(I) + " goes past the end of the section"); |
| |
| if (uintptr_t(VerneedBuf) % sizeof(uint32_t) != 0) |
| return createError( |
| "invalid " + describe(Sec) + |
| ": found a misaligned version dependency entry at offset 0x" + |
| Twine::utohexstr(VerneedBuf - Start)); |
| |
| unsigned Version = *reinterpret_cast<const Elf_Half *>(VerneedBuf); |
| if (Version != 1) |
| return createError("unable to dump " + describe(Sec) + ": version " + |
| Twine(Version) + " is not yet supported"); |
| |
| const Elf_Verneed *Verneed = |
| reinterpret_cast<const Elf_Verneed *>(VerneedBuf); |
| |
| VerNeed &VN = *Ret.emplace(Ret.end()); |
| VN.Version = Verneed->vn_version; |
| VN.Cnt = Verneed->vn_cnt; |
| VN.Offset = VerneedBuf - Start; |
| |
| if (Verneed->vn_file < StrTab.size()) |
| VN.File = std::string(StrTab.drop_front(Verneed->vn_file)); |
| else |
| VN.File = "<corrupt vn_file: " + to_string(Verneed->vn_file) + ">"; |
| |
| const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux; |
| for (unsigned J = 0; J < Verneed->vn_cnt; ++J) { |
| if (uintptr_t(VernauxBuf) % sizeof(uint32_t) != 0) |
| return createError("invalid " + describe(Sec) + |
| ": found a misaligned auxiliary entry at offset 0x" + |
| Twine::utohexstr(VernauxBuf - Start)); |
| |
| if (VernauxBuf + sizeof(Elf_Vernaux) > End) |
| return createError( |
| "invalid " + describe(Sec) + ": version dependency " + Twine(I) + |
| " refers to an auxiliary entry that goes past the end " |
| "of the section"); |
| |
| const Elf_Vernaux *Vernaux = |
| reinterpret_cast<const Elf_Vernaux *>(VernauxBuf); |
| |
| VernAux &Aux = *VN.AuxV.emplace(VN.AuxV.end()); |
| Aux.Hash = Vernaux->vna_hash; |
| Aux.Flags = Vernaux->vna_flags; |
| Aux.Other = Vernaux->vna_other; |
| Aux.Offset = VernauxBuf - Start; |
| if (StrTab.size() <= Vernaux->vna_name) |
| Aux.Name = "<corrupt>"; |
| else |
| Aux.Name = std::string(StrTab.drop_front(Vernaux->vna_name)); |
| |
| VernauxBuf += Vernaux->vna_next; |
| } |
| VerneedBuf += Verneed->vn_next; |
| } |
| return Ret; |
| } |
| |
| template <class ELFT> |
| void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { |
| Optional<StringRef> StrTable; |
| size_t Entries = 0; |
| Elf_Sym_Range Syms(nullptr, nullptr); |
| const Elf_Shdr *SymtabSec = IsDynamic ? DotDynsymSec : DotSymtabSec; |
| |
| if (IsDynamic) { |
| StrTable = DynamicStringTable; |
| Syms = dynamic_symbols(); |
| Entries = Syms.size(); |
| } else if (DotSymtabSec) { |
| if (Expected<StringRef> StrTableOrErr = |
| Obj.getStringTableForSymtab(*DotSymtabSec)) |
| StrTable = *StrTableOrErr; |
| else |
| reportUniqueWarning(createError( |
| "unable to get the string table for the SHT_SYMTAB section: " + |
| toString(StrTableOrErr.takeError()))); |
| |
| if (Expected<Elf_Sym_Range> SymsOrErr = Obj.symbols(DotSymtabSec)) |
| Syms = *SymsOrErr; |
| else |
| reportUniqueWarning( |
| createError("unable to read symbols from the SHT_SYMTAB section: " + |
| toString(SymsOrErr.takeError()))); |
| Entries = DotSymtabSec->getEntityCount(); |
| } |
| if (Syms.begin() == Syms.end()) |
| return; |
| |
| // The st_other field has 2 logical parts. The first two bits hold the symbol |
| // visibility (STV_*) and the remainder hold other platform-specific values. |
| bool NonVisibilityBitsUsed = llvm::find_if(Syms, [](const Elf_Sym &S) { |
| return S.st_other & ~0x3; |
| }) != Syms.end(); |
| |
| ELFDumperStyle->printSymtabMessage(SymtabSec, Entries, NonVisibilityBitsUsed); |
| for (const Elf_Sym &Sym : Syms) |
| ELFDumperStyle->printSymbol(Sym, &Sym - Syms.begin(), StrTable, IsDynamic, |
| NonVisibilityBitsUsed); |
| } |
| |
| template <class ELFT> class MipsGOTParser; |
| |
| template <typename ELFT> class DumpStyle { |
| public: |
| TYPEDEF_ELF_TYPES(ELFT) |
| |
| DumpStyle(const ELFDumper<ELFT> &Dumper) |
| : Obj(*Dumper.getElfObject().getELFFile()), ElfObj(Dumper.getElfObject()), |
| Dumper(Dumper) { |
| FileName = ElfObj.getFileName(); |
| } |
| |
| virtual ~DumpStyle() = default; |
| |
| virtual void printFileHeaders() = 0; |
| virtual void printGroupSections() = 0; |
| virtual void printRelocations() = 0; |
| virtual void printSectionHeaders() = 0; |
| virtual void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) = 0; |
| virtual void printHashSymbols() {} |
| virtual void printSectionDetails() {} |
| virtual void printDependentLibs() = 0; |
| virtual void printDynamic() {} |
| virtual void printDynamicRelocations() = 0; |
| virtual void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset, |
| bool NonVisibilityBitsUsed) {} |
| virtual void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, bool IsDynamic, |
| bool NonVisibilityBitsUsed) = 0; |
| virtual void printProgramHeaders(bool PrintProgramHeaders, |
| cl::boolOrDefault PrintSectionMapping) = 0; |
| virtual void printVersionSymbolSection(const Elf_Shdr *Sec) = 0; |
| virtual void printVersionDefinitionSection(const Elf_Shdr *Sec) = 0; |
| virtual void printVersionDependencySection(const Elf_Shdr *Sec) = 0; |
| virtual void printHashHistograms() = 0; |
| virtual void printCGProfile() = 0; |
| virtual void printAddrsig() = 0; |
| virtual void printNotes() = 0; |
| virtual void printELFLinkerOptions() = 0; |
| virtual void printStackSizes() = 0; |
| void printNonRelocatableStackSizes(std::function<void()> PrintHeader); |
| void printRelocatableStackSizes(std::function<void()> PrintHeader); |
| void printFunctionStackSize(uint64_t SymValue, |
| Optional<const Elf_Shdr *> FunctionSec, |
| const Elf_Shdr &StackSizeSec, DataExtractor Data, |
| uint64_t *Offset); |
| void printStackSize(const Relocation<ELFT> &R, const Elf_Shdr &RelocSec, |
| unsigned Ndx, const Elf_Shdr *SymTab, |
| const Elf_Shdr *FunctionSec, const Elf_Shdr &StackSizeSec, |
| const RelocationResolver &Resolver, DataExtractor Data); |
| virtual void printStackSizeEntry(uint64_t Size, StringRef FuncName) = 0; |
| virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; |
| virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; |
| virtual void printMipsABIFlags() = 0; |
| const ELFDumper<ELFT> &dumper() const { return Dumper; } |
| void reportUniqueWarning(Error Err) const; |
| |
| protected: |
| std::vector<GroupSection> getGroups(); |
| |
| void printDependentLibsHelper( |
| function_ref<void(const Elf_Shdr &)> OnSectionStart, |
| function_ref<void(StringRef, uint64_t)> OnSectionEntry); |
| |
| virtual void printReloc(const Relocation<ELFT> &R, unsigned RelIndex, |
| const Elf_Shdr &Sec, const Elf_Shdr *SymTab) = 0; |
| virtual void printRelrReloc(const Elf_Relr &R) = 0; |
| virtual void printDynamicReloc(const Relocation<ELFT> &R) = 0; |
| void forEachRelocationDo( |
| const Elf_Shdr &Sec, bool RawRelr, |
| llvm::function_ref<void(const Relocation<ELFT> &, unsigned, |
| const Elf_Shdr &, const Elf_Shdr *)> |
| RelRelaFn, |
| llvm::function_ref<void(const Elf_Relr &)> RelrFn); |
| void printRelocationsHelper(const Elf_Shdr &Sec); |
| void printDynamicRelocationsHelper(); |
| virtual void printDynamicRelocHeader(unsigned Type, StringRef Name, |
| const DynRegionInfo &Reg){}; |
| |
| StringRef getPrintableSectionName(const Elf_Shdr &Sec) const; |
| |
| StringRef FileName; |
| const ELFFile<ELFT> &Obj; |
| const ELFObjectFile<ELFT> &ElfObj; |
| |
| private: |
| const ELFDumper<ELFT> &Dumper; |
| }; |
| |
| template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { |
| formatted_raw_ostream &OS; |
| |
| public: |
| TYPEDEF_ELF_TYPES(ELFT) |
| |
| GNUStyle(ScopedPrinter &W, const ELFDumper<ELFT> &Dumper) |
| : DumpStyle<ELFT>(Dumper), |
| OS(static_cast<formatted_raw_ostream &>(W.getOStream())) { |
| assert(&W.getOStream() == &llvm::fouts()); |
| } |
| |
| void printFileHeaders() override; |
| void printGroupSections() override; |
| void printRelocations() override; |
| void printSectionHeaders() override; |
| void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; |
| void printHashSymbols() override; |
| void printSectionDetails() override; |
| void printDependentLibs() override; |
| void printDynamic() override; |
| void printDynamicRelocations() override; |
| void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset, |
| bool NonVisibilityBitsUsed) override; |
| void printProgramHeaders(bool PrintProgramHeaders, |
| cl::boolOrDefault PrintSectionMapping) override; |
| void printVersionSymbolSection(const Elf_Shdr *Sec) override; |
| void printVersionDefinitionSection(const Elf_Shdr *Sec) override; |
| void printVersionDependencySection(const Elf_Shdr *Sec) override; |
| void printHashHistograms() override; |
| void printCGProfile() override; |
| void printAddrsig() override; |
| void printNotes() override; |
| void printELFLinkerOptions() override; |
| void printStackSizes() override; |
| void printStackSizeEntry(uint64_t Size, StringRef FuncName) override; |
| void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; |
| void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; |
| void printMipsABIFlags() override; |
| |
| private: |
| void printHashHistogram(const Elf_Hash &HashTable); |
| void printGnuHashHistogram(const Elf_GnuHash &GnuHashTable); |
| |
| void printHashTableSymbols(const Elf_Hash &HashTable); |
| void printGnuHashTableSymbols(const Elf_GnuHash &GnuHashTable); |
| |
| struct Field { |
| std::string Str; |
| unsigned Column; |
| |
| Field(StringRef S, unsigned Col) : Str(std::string(S)), Column(Col) {} |
| Field(unsigned Col) : Column(Col) {} |
| }; |
| |
| template <typename T, typename TEnum> |
| std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { |
| for (const EnumEntry<TEnum> &EnumItem : EnumValues) |
| if (EnumItem.Value == Value) |
| return std::string(EnumItem.AltName); |
| return to_hexString(Value, false); |
| } |
| |
| template <typename T, typename TEnum> |
| std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues, |
| TEnum EnumMask1 = {}, TEnum EnumMask2 = {}, |
| TEnum EnumMask3 = {}) { |
| std::string Str; |
| for (const EnumEntry<TEnum> &Flag : EnumValues) { |
| if (Flag.Value == 0) |
| continue; |
| |
| TEnum EnumMask{}; |
| if (Flag.Value & EnumMask1) |
| EnumMask = EnumMask1; |
| else if (Flag.Value & EnumMask2) |
| EnumMask = EnumMask2; |
| else if (Flag.Value & EnumMask3) |
| EnumMask = EnumMask3; |
| bool IsEnum = (Flag.Value & EnumMask) != 0; |
| if ((!IsEnum && (Value & Flag.Value) == Flag.Value) || |
| (IsEnum && (Value & EnumMask) == Flag.Value)) { |
| if (!Str.empty()) |
| Str += ", "; |
| Str += Flag.AltName; |
| } |
| } |
| return Str; |
| } |
| |
| formatted_raw_ostream &printField(struct Field F) { |
| if (F.Column != 0) |
| OS.PadToColumn(F.Column); |
| OS << F.Str; |
| OS.flush(); |
| return OS; |
| } |
| void printHashedSymbol(const Elf_Sym *Sym, unsigned SymIndex, |
| StringRef StrTable, uint32_t Bucket); |
| void printReloc(const Relocation<ELFT> &R, unsigned RelIndex, |
| const Elf_Shdr &Sec, const Elf_Shdr *SymTab) override; |
| void printRelrReloc(const Elf_Relr &R) override; |
| |
| void printRelRelaReloc(const Relocation<ELFT> &R, |
| const RelSymbol<ELFT> &RelSym); |
| void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, bool IsDynamic, |
| bool NonVisibilityBitsUsed) override; |
| void printDynamicRelocHeader(unsigned Type, StringRef Name, |
| const DynRegionInfo &Reg) override; |
| void printDynamicReloc(const Relocation<ELFT> &R) override; |
| |
| std::string getSymbolSectionNdx(const Elf_Sym &Symbol, unsigned SymIndex); |
| void printProgramHeaders(); |
| void printSectionMapping(); |
| void printGNUVersionSectionProlog(const typename ELFT::Shdr &Sec, |
| const Twine &Label, unsigned EntriesNum); |
| }; |
| |
| template <class ELFT> |
| void ELFDumper<ELFT>::reportUniqueWarning(Error Err) const { |
| handleAllErrors(std::move(Err), [&](const ErrorInfoBase &EI) { |
| cantFail(WarningHandler(EI.message()), |
| "WarningHandler should always return ErrorSuccess"); |
| }); |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::reportUniqueWarning(Error Err) const { |
| this->dumper().reportUniqueWarning(std::move(Err)); |
| } |
| |
| template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { |
| public: |
| TYPEDEF_ELF_TYPES(ELFT) |
| |
| LLVMStyle(ScopedPrinter &W, const ELFDumper<ELFT> &Dumper) |
| : DumpStyle<ELFT>(Dumper), W(W) {} |
| |
| void printFileHeaders() override; |
| void printGroupSections() override; |
| void printRelocations() override; |
| void printSectionHeaders() override; |
| void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; |
| void printDependentLibs() override; |
| void printDynamic() override; |
| void printDynamicRelocations() override; |
| void printProgramHeaders(bool PrintProgramHeaders, |
| cl::boolOrDefault PrintSectionMapping) override; |
| void printVersionSymbolSection(const Elf_Shdr *Sec) override; |
| void printVersionDefinitionSection(const Elf_Shdr *Sec) override; |
| void printVersionDependencySection(const Elf_Shdr *Sec) override; |
| void printHashHistograms() override; |
| void printCGProfile() override; |
| void printAddrsig() override; |
| void printNotes() override; |
| void printELFLinkerOptions() override; |
| void printStackSizes() override; |
| void printStackSizeEntry(uint64_t Size, StringRef FuncName) override; |
| void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; |
| void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; |
| void printMipsABIFlags() override; |
| |
| private: |
| void printReloc(const Relocation<ELFT> &R, unsigned RelIndex, |
| const Elf_Shdr &Sec, const Elf_Shdr *SymTab) override; |
| void printRelrReloc(const Elf_Relr &R) override; |
| void printDynamicReloc(const Relocation<ELFT> &R) override; |
| |
| void printRelRelaReloc(const Relocation<ELFT> &R, StringRef SymbolName); |
| void printSymbols(); |
| void printDynamicSymbols(); |
| void printSymbolSection(const Elf_Sym &Symbol, unsigned SymIndex); |
| void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, bool IsDynamic, |
| bool /*NonVisibilityBitsUsed*/) override; |
| void printProgramHeaders(); |
| void printSectionMapping() {} |
| |
| ScopedPrinter &W; |
| }; |
| |
| } // end anonymous namespace |
| |
| namespace llvm { |
| |
| template <class ELFT> |
| static std::unique_ptr<ObjDumper> createELFDumper(const ELFObjectFile<ELFT> &Obj, |
| ScopedPrinter &Writer) { |
| return std::make_unique<ELFDumper<ELFT>>(Obj, Writer); |
| } |
| |
| std::unique_ptr<ObjDumper> createELFDumper(const object::ELFObjectFileBase &Obj, |
| ScopedPrinter &Writer) { |
| // Little-endian 32-bit |
| if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(&Obj)) |
| return createELFDumper(*ELFObj, Writer); |
| |
| // Big-endian 32-bit |
| if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(&Obj)) |
| return createELFDumper(*ELFObj, Writer); |
| |
| // Little-endian 64-bit |
| if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(&Obj)) |
| return createELFDumper(*ELFObj, Writer); |
| |
| // Big-endian 64-bit |
| return createELFDumper(*cast<ELF64BEObjectFile>(&Obj), Writer); |
| } |
| |
| } // end namespace llvm |
| |
| template <class ELFT> Error ELFDumper<ELFT>::LoadVersionMap() const { |
| // If there is no dynamic symtab or version table, there is nothing to do. |
| if (!DynSymRegion || !SymbolVersionSection) |
| return Error::success(); |
| |
| // Has the VersionMap already been loaded? |
| if (!VersionMap.empty()) |
| return Error::success(); |
| |
| // The first two version indexes are reserved. |
| // Index 0 is LOCAL, index 1 is GLOBAL. |
| VersionMap.push_back(VersionEntry()); |
| VersionMap.push_back(VersionEntry()); |
| |
| auto InsertEntry = [this](unsigned N, StringRef Version, bool IsVerdef) { |
| if (N >= VersionMap.size()) |
| VersionMap.resize(N + 1); |
| VersionMap[N] = {std::string(Version), IsVerdef}; |
| }; |
| |
| if (SymbolVersionDefSection) { |
| Expected<std::vector<VerDef>> Defs = |
| this->getVersionDefinitions(*SymbolVersionDefSection); |
| if (!Defs) |
| return Defs.takeError(); |
| for (const VerDef &Def : *Defs) |
| InsertEntry(Def.Ndx & ELF::VERSYM_VERSION, Def.Name, true); |
| } |
| |
| if (SymbolVersionNeedSection) { |
| Expected<std::vector<VerNeed>> Deps = |
| this->getVersionDependencies(*SymbolVersionNeedSection); |
| if (!Deps) |
| return Deps.takeError(); |
| for (const VerNeed &Dep : *Deps) |
| for (const VernAux &Aux : Dep.AuxV) |
| InsertEntry(Aux.Other & ELF::VERSYM_VERSION, Aux.Name, false); |
| } |
| |
| return Error::success(); |
| } |
| |
| template <typename ELFT> |
| Expected<StringRef> ELFDumper<ELFT>::getSymbolVersion(const Elf_Sym &Sym, |
| bool &IsDefault) const { |
| // This is a dynamic symbol. Look in the GNU symbol version table. |
| if (!SymbolVersionSection) { |
| // No version table. |
| IsDefault = false; |
| return ""; |
| } |
| |
| assert(DynSymRegion && "DynSymRegion has not been initialised"); |
| // Determine the position in the symbol table of this entry. |
| size_t EntryIndex = (reinterpret_cast<uintptr_t>(&Sym) - |
| reinterpret_cast<uintptr_t>(DynSymRegion->Addr)) / |
| sizeof(Elf_Sym); |
| |
| // Get the corresponding version index entry. |
| if (Expected<const Elf_Versym *> EntryOrErr = |
| Obj.template getEntry<Elf_Versym>(*SymbolVersionSection, EntryIndex)) |
| return this->getSymbolVersionByIndex((*EntryOrErr)->vs_index, IsDefault); |
| else |
| return EntryOrErr.takeError(); |
| } |
| |
| template <typename ELFT> |
| Expected<RelSymbol<ELFT>> |
| ELFDumper<ELFT>::getRelocationTarget(const Relocation<ELFT> &R, |
| const Elf_Shdr *SymTab) const { |
| if (R.Symbol == 0) |
| return RelSymbol<ELFT>(nullptr, ""); |
| |
| Expected<const Elf_Sym *> SymOrErr = |
| Obj.template getEntry<Elf_Sym>(*SymTab, R.Symbol); |
| if (!SymOrErr) |
| return SymOrErr.takeError(); |
| const Elf_Sym *Sym = *SymOrErr; |
| if (!Sym) |
| return RelSymbol<ELFT>(nullptr, ""); |
| |
| Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(*SymTab); |
| if (!StrTableOrErr) |
| return StrTableOrErr.takeError(); |
| |
| const Elf_Sym *FirstSym = |
| cantFail(Obj.template getEntry<Elf_Sym>(*SymTab, 0)); |
| std::string SymbolName = getFullSymbolName( |
| *Sym, Sym - FirstSym, *StrTableOrErr, SymTab->sh_type == SHT_DYNSYM); |
| return RelSymbol<ELFT>(Sym, SymbolName); |
| } |
| |
| static std::string maybeDemangle(StringRef Name) { |
| return opts::Demangle ? demangle(std::string(Name)) : Name.str(); |
| } |
| |
| template <typename ELFT> |
| std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const { |
| auto Warn = [&](Error E) -> std::string { |
| this->reportUniqueWarning( |
| createError("unable to read the name of symbol with index " + |
| Twine(Index) + ": " + toString(std::move(E)))); |
| return "<?>"; |
| }; |
| |
| Expected<const typename ELFT::Sym *> SymOrErr = |
| Obj.getSymbol(DotSymtabSec, Index); |
| if (!SymOrErr) |
| return Warn(SymOrErr.takeError()); |
| |
| Expected<StringRef> StrTabOrErr = Obj.getStringTableForSymtab(*DotSymtabSec); |
| if (!StrTabOrErr) |
| return Warn(StrTabOrErr.takeError()); |
| |
| Expected<StringRef> NameOrErr = (*SymOrErr)->getName(*StrTabOrErr); |
| if (!NameOrErr) |
| return Warn(NameOrErr.takeError()); |
| return maybeDemangle(*NameOrErr); |
| } |
| |
| template <typename ELFT> |
| Expected<StringRef> |
| ELFDumper<ELFT>::getSymbolVersionByIndex(uint32_t SymbolVersionIndex, |
| bool &IsDefault) const { |
| size_t VersionIndex = SymbolVersionIndex & VERSYM_VERSION; |
| |
| // Special markers for unversioned symbols. |
| if (VersionIndex == VER_NDX_LOCAL || VersionIndex == VER_NDX_GLOBAL) { |
| IsDefault = false; |
| return ""; |
| } |
| |
| // Lookup this symbol in the version table. |
| if (Error E = LoadVersionMap()) |
| return std::move(E); |
| if (VersionIndex >= VersionMap.size() || !VersionMap[VersionIndex]) |
| return createError("SHT_GNU_versym section refers to a version index " + |
| Twine(VersionIndex) + " which is missing"); |
| |
| const VersionEntry &Entry = *VersionMap[VersionIndex]; |
| if (Entry.IsVerDef) |
| IsDefault = !(SymbolVersionIndex & VERSYM_HIDDEN); |
| else |
| IsDefault = false; |
| return Entry.Name.c_str(); |
| } |
| |
| template <typename ELFT> |
| std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym &Symbol, |
| unsigned SymIndex, |
| Optional<StringRef> StrTable, |
| bool IsDynamic) const { |
| if (!StrTable) |
| return "<?>"; |
| |
| std::string SymbolName; |
| if (Expected<StringRef> NameOrErr = Symbol.getName(*StrTable)) { |
| SymbolName = maybeDemangle(*NameOrErr); |
| } else { |
| reportUniqueWarning(NameOrErr.takeError()); |
| return "<?>"; |
| } |
| |
| if (SymbolName.empty() && Symbol.getType() == ELF::STT_SECTION) { |
| Expected<unsigned> SectionIndex = getSymbolSectionIndex(Symbol, SymIndex); |
| if (!SectionIndex) { |
| reportUniqueWarning(SectionIndex.takeError()); |
| return "<?>"; |
| } |
| Expected<StringRef> NameOrErr = getSymbolSectionName(Symbol, *SectionIndex); |
| if (!NameOrErr) { |
| reportUniqueWarning(NameOrErr.takeError()); |
| return ("<section " + Twine(*SectionIndex) + ">").str(); |
| } |
| return std::string(*NameOrErr); |
| } |
| |
| if (!IsDynamic) |
| return SymbolName; |
| |
| bool IsDefault; |
| Expected<StringRef> VersionOrErr = getSymbolVersion(Symbol, IsDefault); |
| if (!VersionOrErr) { |
| reportUniqueWarning(VersionOrErr.takeError()); |
| return SymbolName + "@<corrupt>"; |
| } |
| |
| if (!VersionOrErr->empty()) { |
| SymbolName += (IsDefault ? "@@" : "@"); |
| SymbolName += *VersionOrErr; |
| } |
| return SymbolName; |
| } |
| |
| template <typename ELFT> |
| Expected<unsigned> |
| ELFDumper<ELFT>::getSymbolSectionIndex(const Elf_Sym &Symbol, |
| unsigned SymIndex) const { |
| unsigned Ndx = Symbol.st_shndx; |
| if (Ndx == SHN_XINDEX) |
| return object::getExtendedSymbolTableIndex<ELFT>(Symbol, SymIndex, |
| ShndxTable); |
| if (Ndx != SHN_UNDEF && Ndx < SHN_LORESERVE) |
| return Ndx; |
| |
| auto CreateErr = [&](const Twine &Name, Optional<unsigned> Offset = None) { |
| std::string Desc; |
| if (Offset) |
| Desc = (Name + "+0x" + Twine::utohexstr(*Offset)).str(); |
| else |
| Desc = Name.str(); |
| return createError( |
| "unable to get section index for symbol with st_shndx = 0x" + |
| Twine::utohexstr(Ndx) + " (" + Desc + ")"); |
| }; |
| |
| if (Ndx >= ELF::SHN_LOPROC && Ndx <= ELF::SHN_HIPROC) |
| return CreateErr("SHN_LOPROC", Ndx - ELF::SHN_LOPROC); |
| if (Ndx >= ELF::SHN_LOOS && Ndx <= ELF::SHN_HIOS) |
| return CreateErr("SHN_LOOS", Ndx - ELF::SHN_LOOS); |
| if (Ndx == ELF::SHN_UNDEF) |
| return CreateErr("SHN_UNDEF"); |
| if (Ndx == ELF::SHN_ABS) |
| return CreateErr("SHN_ABS"); |
| if (Ndx == ELF::SHN_COMMON) |
| return CreateErr("SHN_COMMON"); |
| return CreateErr("SHN_LORESERVE", Ndx - SHN_LORESERVE); |
| } |
| |
| template <typename ELFT> |
| Expected<StringRef> |
| ELFDumper<ELFT>::getSymbolSectionName(const Elf_Sym &Symbol, |
| unsigned SectionIndex) const { |
| Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(SectionIndex); |
| if (!SecOrErr) |
| return SecOrErr.takeError(); |
| return Obj.getSectionName(**SecOrErr); |
| } |
| |
| template <class ELFO> |
| static const typename ELFO::Elf_Shdr * |
| findNotEmptySectionByAddress(const ELFO &Obj, StringRef FileName, |
| uint64_t Addr) { |
| for (const typename ELFO::Elf_Shdr &Shdr : cantFail(Obj.sections())) |
| if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) |
| return &Shdr; |
| return nullptr; |
| } |
| |
| static const EnumEntry<unsigned> ElfClass[] = { |
| {"None", "none", ELF::ELFCLASSNONE}, |
| {"32-bit", "ELF32", ELF::ELFCLASS32}, |
| {"64-bit", "ELF64", ELF::ELFCLASS64}, |
| }; |
| |
| static const EnumEntry<unsigned> ElfDataEncoding[] = { |
| {"None", "none", ELF::ELFDATANONE}, |
| {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, |
| {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, |
| }; |
| |
| static const EnumEntry<unsigned> ElfObjectFileType[] = { |
| {"None", "NONE (none)", ELF::ET_NONE}, |
| {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, |
| {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, |
| {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, |
| {"Core", "CORE (Core file)", ELF::ET_CORE}, |
| }; |
| |
| static const EnumEntry<unsigned> ElfOSABI[] = { |
| {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, |
| {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, |
| {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, |
| {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, |
| {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, |
| {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, |
| {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, |
| {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, |
| {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, |
| {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, |
| {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, |
| {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, |
| {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, |
| {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, |
| {"AROS", "AROS", ELF::ELFOSABI_AROS}, |
| {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, |
| {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, |
| {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} |
| }; |
| |
| static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { |
| {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, |
| {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, |
| {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} |
| }; |
| |
| static const EnumEntry<unsigned> ARMElfOSABI[] = { |
| {"ARM", "ARM", ELF::ELFOSABI_ARM} |
| }; |
| |
| static const EnumEntry<unsigned> C6000ElfOSABI[] = { |
| {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, |
| {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} |
| }; |
| |
| static const EnumEntry<unsigned> ElfMachineType[] = { |
| ENUM_ENT(EM_NONE, "None"), |
| ENUM_ENT(EM_M32, "WE32100"), |
| ENUM_ENT(EM_SPARC, "Sparc"), |
| ENUM_ENT(EM_386, "Intel 80386"), |
| ENUM_ENT(EM_68K, "MC68000"), |
| ENUM_ENT(EM_88K, "MC88000"), |
| ENUM_ENT(EM_IAMCU, "EM_IAMCU"), |
| ENUM_ENT(EM_860, "Intel 80860"), |
| ENUM_ENT(EM_MIPS, "MIPS R3000"), |
| ENUM_ENT(EM_S370, "IBM System/370"), |
| ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), |
| ENUM_ENT(EM_PARISC, "HPPA"), |
| ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), |
| ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), |
| ENUM_ENT(EM_960, "Intel 80960"), |
| ENUM_ENT(EM_PPC, "PowerPC"), |
| ENUM_ENT(EM_PPC64, "PowerPC64"), |
| ENUM_ENT(EM_S390, "IBM S/390"), |
| ENUM_ENT(EM_SPU, "SPU"), |
| ENUM_ENT(EM_V800, "NEC V800 series"), |
| ENUM_ENT(EM_FR20, "Fujistsu FR20"), |
| ENUM_ENT(EM_RH32, "TRW RH-32"), |
| ENUM_ENT(EM_RCE, "Motorola RCE"), |
| ENUM_ENT(EM_ARM, "ARM"), |
| ENUM_ENT(EM_ALPHA, "EM_ALPHA"), |
| ENUM_ENT(EM_SH, "Hitachi SH"), |
| ENUM_ENT(EM_SPARCV9, "Sparc v9"), |
| ENUM_ENT(EM_TRICORE, "Siemens Tricore"), |
| ENUM_ENT(EM_ARC, "ARC"), |
| ENUM_ENT(EM_H8_300, "Hitachi H8/300"), |
| ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), |
| ENUM_ENT(EM_H8S, "Hitachi H8S"), |
| ENUM_ENT(EM_H8_500, "Hitachi H8/500"), |
| ENUM_ENT(EM_IA_64, "Intel IA-64"), |
| ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), |
| ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), |
| ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), |
| ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), |
| ENUM_ENT(EM_PCP, "Siemens PCP"), |
| ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), |
| ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), |
| ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), |
| ENUM_ENT(EM_ME16, "Toyota ME16 processor"), |
| ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), |
| ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), |
| ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), |
| ENUM_ENT(EM_PDSP, "Sony DSP processor"), |
| ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), |
| ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), |
| ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), |
| ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), |
| ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), |
| ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), |
| ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), |
| ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), |
| ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), |
| ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), |
| ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), |
| ENUM_ENT(EM_VAX, "Digital VAX"), |
| ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), |
| ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), |
| ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), |
| ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), |
| ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), |
| ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), |
| ENUM_ENT(EM_PRISM, "Vitesse Prism"), |
| ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), |
| ENUM_ENT(EM_FR30, "Fujitsu FR30"), |
| ENUM_ENT(EM_D10V, "Mitsubishi D10V"), |
| ENUM_ENT(EM_D30V, "Mitsubishi D30V"), |
| ENUM_ENT(EM_V850, "NEC v850"), |
| ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), |
| ENUM_ENT(EM_MN10300, "Matsushita MN10300"), |
| ENUM_ENT(EM_MN10200, "Matsushita MN10200"), |
| ENUM_ENT(EM_PJ, "picoJava"), |
| ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), |
| ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), |
| ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), |
| ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), |
| ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), |
| ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), |
| ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), |
| ENUM_ENT(EM_SNP1K, "EM_SNP1K"), |
| ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), |
| ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), |
| ENUM_ENT(EM_MAX, "MAX Processor"), |
| ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), |
| ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), |
| ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), |
| ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), |
| ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), |
| ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), |
| ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), |
| ENUM_ENT(EM_UNICORE, "Unicore"), |
| ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), |
| ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), |
| ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), |
| ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), |
| ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), |
| ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), |
| ENUM_ENT(EM_M16C, "Renesas M16C"), |
| ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), |
| ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), |
| ENUM_ENT(EM_M32C, "Renesas M32C"), |
| ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), |
| ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), |
| ENUM_ENT(EM_SHARC, "EM_SHARC"), |
| ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), |
| ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), |
| ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), |
| ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), |
| ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), |
| ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), |
| ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), |
| ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), |
| ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), |
| ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), |
| ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), |
| ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), |
| ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), |
| ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), |
| ENUM_ENT(EM_8051, "Intel 8051 and variants"), |
| ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), |
| ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), |
| ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), |
| // FIXME: Following EM_ECOG1X definitions is dead code since EM_ECOG1X has |
| // an identical number to EM_ECOG1. |
| ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), |
| ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), |
| ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), |
| ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), |
| ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), |
| ENUM_ENT(EM_RX, "Renesas RX"), |
| ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), |
| ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), |
| ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), |
| ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), |
| ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), |
| ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), |
| ENUM_ENT(EM_L10M, "EM_L10M"), |
| ENUM_ENT(EM_K10M, "EM_K10M"), |
| ENUM_ENT(EM_AARCH64, "AArch64"), |
| ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), |
| ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), |
| ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), |
| ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), |
| ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), |
| ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), |
| ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), |
| ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), |
| ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), |
| ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), |
| ENUM_ENT(EM_OPEN8, "EM_OPEN8"), |
| ENUM_ENT(EM_RL78, "Renesas RL78"), |
| ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), |
| ENUM_ENT(EM_78KOR, "EM_78KOR"), |
| ENUM_ENT(EM_56800EX, "EM_56800EX"), |
| ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), |
| ENUM_ENT(EM_RISCV, "RISC-V"), |
| ENUM_ENT(EM_LANAI, "EM_LANAI"), |
| ENUM_ENT(EM_BPF, "EM_BPF"), |
| ENUM_ENT(EM_VE, "NEC SX-Aurora Vector Engine"), |
| }; |
| |
| static const EnumEntry<unsigned> ElfSymbolBindings[] = { |
| {"Local", "LOCAL", ELF::STB_LOCAL}, |
| {"Global", "GLOBAL", ELF::STB_GLOBAL}, |
| {"Weak", "WEAK", ELF::STB_WEAK}, |
| {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; |
| |
| static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { |
| {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, |
| {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, |
| {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, |
| {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; |
| |
| static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { |
| { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } |
| }; |
| |
| static const char *getGroupType(uint32_t Flag) { |
| if (Flag & ELF::GRP_COMDAT) |
| return "COMDAT"; |
| else |
| return "(unknown)"; |
| } |
| |
| static const EnumEntry<unsigned> ElfSectionFlags[] = { |
| ENUM_ENT(SHF_WRITE, "W"), |
| ENUM_ENT(SHF_ALLOC, "A"), |
| ENUM_ENT(SHF_EXECINSTR, "X"), |
| ENUM_ENT(SHF_MERGE, "M"), |
| ENUM_ENT(SHF_STRINGS, "S"), |
| ENUM_ENT(SHF_INFO_LINK, "I"), |
| ENUM_ENT(SHF_LINK_ORDER, "L"), |
| ENUM_ENT(SHF_OS_NONCONFORMING, "O"), |
| ENUM_ENT(SHF_GROUP, "G"), |
| ENUM_ENT(SHF_TLS, "T"), |
| ENUM_ENT(SHF_COMPRESSED, "C"), |
| ENUM_ENT(SHF_EXCLUDE, "E"), |
| }; |
| |
| static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { |
| ENUM_ENT(XCORE_SHF_CP_SECTION, ""), |
| ENUM_ENT(XCORE_SHF_DP_SECTION, "") |
| }; |
| |
| static const EnumEntry<unsigned> ElfARMSectionFlags[] = { |
| ENUM_ENT(SHF_ARM_PURECODE, "y") |
| }; |
| |
| static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { |
| ENUM_ENT(SHF_HEX_GPREL, "") |
| }; |
| |
| static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { |
| ENUM_ENT(SHF_MIPS_NODUPES, ""), |
| ENUM_ENT(SHF_MIPS_NAMES, ""), |
| ENUM_ENT(SHF_MIPS_LOCAL, ""), |
| ENUM_ENT(SHF_MIPS_NOSTRIP, ""), |
| ENUM_ENT(SHF_MIPS_GPREL, ""), |
| ENUM_ENT(SHF_MIPS_MERGE, ""), |
| ENUM_ENT(SHF_MIPS_ADDR, ""), |
| ENUM_ENT(SHF_MIPS_STRING, "") |
| }; |
| |
| static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { |
| ENUM_ENT(SHF_X86_64_LARGE, "l") |
| }; |
| |
| static std::vector<EnumEntry<unsigned>> |
| getSectionFlagsForTarget(unsigned EMachine) { |
| std::vector<EnumEntry<unsigned>> Ret(std::begin(ElfSectionFlags), |
| std::end(ElfSectionFlags)); |
| switch (EMachine) { |
| case EM_ARM: |
| Ret.insert(Ret.end(), std::begin(ElfARMSectionFlags), |
| std::end(ElfARMSectionFlags)); |
| break; |
| case EM_HEXAGON: |
| Ret.insert(Ret.end(), std::begin(ElfHexagonSectionFlags), |
| std::end(ElfHexagonSectionFlags)); |
| break; |
| case EM_MIPS: |
| Ret.insert(Ret.end(), std::begin(ElfMipsSectionFlags), |
| std::end(ElfMipsSectionFlags)); |
| break; |
| case EM_X86_64: |
| Ret.insert(Ret.end(), std::begin(ElfX86_64SectionFlags), |
| std::end(ElfX86_64SectionFlags)); |
| break; |
| case EM_XCORE: |
| Ret.insert(Ret.end(), std::begin(ElfXCoreSectionFlags), |
| std::end(ElfXCoreSectionFlags)); |
| break; |
| default: |
| break; |
| } |
| return Ret; |
| } |
| |
| static std::string getGNUFlags(unsigned EMachine, uint64_t Flags) { |
| // Here we are trying to build the flags string in the same way as GNU does. |
| // It is not that straightforward. Imagine we have sh_flags == 0x90000000. |
| // SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000. |
| // GNU readelf will not print "E" or "Ep" in this case, but will print just |
| // "p". It only will print "E" when no other processor flag is set. |
| std::string Str; |
| bool HasUnknownFlag = false; |
| bool HasOSFlag = false; |
| bool HasProcFlag = false; |
| std::vector<EnumEntry<unsigned>> FlagsList = |
| getSectionFlagsForTarget(EMachine); |
| while (Flags) { |
| // Take the least significant bit as a flag. |
| uint64_t Flag = Flags & -Flags; |
| Flags -= Flag; |
| |
| // Find the flag in the known flags list. |
| auto I = llvm::find_if(FlagsList, [=](const EnumEntry<unsigned> &E) { |
| // Flags with empty names are not printed in GNU style output. |
| return E.Value == Flag && !E.AltName.empty(); |
| }); |
| if (I != FlagsList.end()) { |
| Str += I->AltName; |
| continue; |
| } |
| |
| // If we did not find a matching regular flag, then we deal with an OS |
| // specific flag, processor specific flag or an unknown flag. |
| if (Flag & ELF::SHF_MASKOS) { |
| HasOSFlag = true; |
| Flags &= ~ELF::SHF_MASKOS; |
| } else if (Flag & ELF::SHF_MASKPROC) { |
| HasProcFlag = true; |
| // Mask off all the processor-specific bits. This removes the SHF_EXCLUDE |
| // bit if set so that it doesn't also get printed. |
| Flags &= ~ELF::SHF_MASKPROC; |
| } else { |
| HasUnknownFlag = true; |
| } |
| } |
| |
| // "o", "p" and "x" are printed last. |
| if (HasOSFlag) |
| Str += "o"; |
| if (HasProcFlag) |
| Str += "p"; |
| if (HasUnknownFlag) |
| Str += "x"; |
| return Str; |
| } |
| |
| static StringRef segmentTypeToString(unsigned Arch, unsigned Type) { |
| // Check potentially overlapped processor-specific program header type. |
| switch (Arch) { |
| case ELF::EM_ARM: |
| switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); } |
| break; |
| case ELF::EM_MIPS: |
| case ELF::EM_MIPS_RS3_LE: |
| switch (Type) { |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); |
| } |
| break; |
| } |
| |
| switch (Type) { |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS); |
| |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); |
| |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_PROPERTY); |
| |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); |
| LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); |
| default: |
| return ""; |
| } |
| } |
| |
| static std::string getGNUPtType(unsigned Arch, unsigned Type) { |
| StringRef Seg = segmentTypeToString(Arch, Type); |
| if (Seg.empty()) |
| return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); |
| |
| // E.g. "PT_ARM_EXIDX" -> "EXIDX". |
| if (Seg.startswith("PT_ARM_")) |
| return Seg.drop_front(7).str(); |
| |
| // E.g. "PT_MIPS_REGINFO" -> "REGINFO". |
| if (Seg.startswith("PT_MIPS_")) |
| return Seg.drop_front(8).str(); |
| |
| // E.g. "PT_LOAD" -> "LOAD". |
| assert(Seg.startswith("PT_")); |
| return Seg.drop_front(3).str(); |
| } |
| |
| static const EnumEntry<unsigned> ElfSegmentFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(ELF, PF_X), |
| LLVM_READOBJ_ENUM_ENT(ELF, PF_W), |
| LLVM_READOBJ_ENUM_ENT(ELF, PF_R) |
| }; |
| |
| static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { |
| ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"), |
| ENUM_ENT(EF_MIPS_PIC, "pic"), |
| ENUM_ENT(EF_MIPS_CPIC, "cpic"), |
| ENUM_ENT(EF_MIPS_ABI2, "abi2"), |
| ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"), |
| ENUM_ENT(EF_MIPS_FP64, "fp64"), |
| ENUM_ENT(EF_MIPS_NAN2008, "nan2008"), |
| ENUM_ENT(EF_MIPS_ABI_O32, "o32"), |
| ENUM_ENT(EF_MIPS_ABI_O64, "o64"), |
| ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"), |
| ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"), |
| ENUM_ENT(EF_MIPS_MACH_3900, "3900"), |
| ENUM_ENT(EF_MIPS_MACH_4010, "4010"), |
| ENUM_ENT(EF_MIPS_MACH_4100, "4100"), |
| ENUM_ENT(EF_MIPS_MACH_4650, "4650"), |
| ENUM_ENT(EF_MIPS_MACH_4120, "4120"), |
| ENUM_ENT(EF_MIPS_MACH_4111, "4111"), |
| ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"), |
| ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"), |
| ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"), |
| ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"), |
| ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"), |
| ENUM_ENT(EF_MIPS_MACH_5400, "5400"), |
| ENUM_ENT(EF_MIPS_MACH_5900, "5900"), |
| ENUM_ENT(EF_MIPS_MACH_5500, "5500"), |
| ENUM_ENT(EF_MIPS_MACH_9000, "9000"), |
| ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"), |
| ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"), |
| ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"), |
| ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"), |
| ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"), |
| ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"), |
| ENUM_ENT(EF_MIPS_ARCH_1, "mips1"), |
| ENUM_ENT(EF_MIPS_ARCH_2, "mips2"), |
| ENUM_ENT(EF_MIPS_ARCH_3, "mips3"), |
| ENUM_ENT(EF_MIPS_ARCH_4, "mips4"), |
| ENUM_ENT(EF_MIPS_ARCH_5, "mips5"), |
| ENUM_ENT(EF_MIPS_ARCH_32, "mips32"), |
| ENUM_ENT(EF_MIPS_ARCH_64, "mips64"), |
| ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"), |
| ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"), |
| ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"), |
| ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6") |
| }; |
| |
| static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX602), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX705), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX805), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90C), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1030), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1031), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1032), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1033), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK), |
| LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC) |
| }; |
| |
| static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { |
| ENUM_ENT(EF_RISCV_RVC, "RVC"), |
| ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"), |
| ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"), |
| ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"), |
| ENUM_ENT(EF_RISCV_RVE, "RVE") |
| }; |
| |
| static const EnumEntry<unsigned> ElfSymOtherFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), |
| LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), |
| LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) |
| }; |
| |
| static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) |
| }; |
| |
| static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), |
| LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) |
| }; |
| |
| static const char *getElfMipsOptionsOdkType(unsigned Odk) { |
| switch (Odk) { |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); |
| LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); |
| default: |
| return "Unknown"; |
| } |
| } |
| |
| template <typename ELFT> |
| std::pair<const typename ELFT::Phdr *, const typename ELFT::Shdr *> |
| ELFDumper<ELFT>::findDynamic() { |
| // Try to locate the PT_DYNAMIC header. |
| const Elf_Phdr *DynamicPhdr = nullptr; |
| if (Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = Obj.program_headers()) { |
| for (const Elf_Phdr &Phdr : *PhdrsOrErr) { |
| if (Phdr.p_type != ELF::PT_DYNAMIC) |
| continue; |
| DynamicPhdr = &Phdr; |
| break; |
| } |
| } else { |
| this->reportUniqueWarning(createError( |
| "unable to read program headers to locate the PT_DYNAMIC segment: " + |
| toString(PhdrsOrErr.takeError()))); |
| } |
| |
| // Try to locate the .dynamic section in the sections header table. |
| const Elf_Shdr *DynamicSec = nullptr; |
| for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { |
| if (Sec.sh_type != ELF::SHT_DYNAMIC) |
| continue; |
| DynamicSec = &Sec; |
| break; |
| } |
| |
| if (DynamicPhdr && ((DynamicPhdr->p_offset + DynamicPhdr->p_filesz > |
| ObjF.getMemoryBufferRef().getBufferSize()) || |
| (DynamicPhdr->p_offset + DynamicPhdr->p_filesz < |
| DynamicPhdr->p_offset))) { |
| reportUniqueWarning(createError( |
| "PT_DYNAMIC segment offset (0x" + |
| Twine::utohexstr(DynamicPhdr->p_offset) + ") + file size (0x" + |
| Twine::utohexstr(DynamicPhdr->p_filesz) + |
| ") exceeds the size of the file (0x" + |
| Twine::utohexstr(ObjF.getMemoryBufferRef().getBufferSize()) + ")")); |
| // Don't use the broken dynamic header. |
| DynamicPhdr = nullptr; |
| } |
| |
| if (DynamicPhdr && DynamicSec) { |
| if (DynamicSec->sh_addr + DynamicSec->sh_size > |
| DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz || |
| DynamicSec->sh_addr < DynamicPhdr->p_vaddr) |
| reportUniqueWarning(createError(describe(*DynamicSec) + |
| " is not contained within the " |
| "PT_DYNAMIC segment")); |
| |
| if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr) |
| reportUniqueWarning(createError(describe(*DynamicSec) + |
| " is not at the start of " |
| "PT_DYNAMIC segment")); |
| } |
| |
| return std::make_pair(DynamicPhdr, DynamicSec); |
| } |
| |
| template <typename ELFT> |
| void ELFDumper<ELFT>::loadDynamicTable() { |
| const Elf_Phdr *DynamicPhdr; |
| const Elf_Shdr *DynamicSec; |
| std::tie(DynamicPhdr, DynamicSec) = findDynamic(); |
| if (!DynamicPhdr && !DynamicSec) |
| return; |
| |
| DynRegionInfo FromPhdr(ObjF); |
| bool IsPhdrTableValid = false; |
| if (DynamicPhdr) { |
| // Use cantFail(), because p_offset/p_filesz fields of a PT_DYNAMIC are |
| // validated in findDynamic() and so createDRI() is not expected to fail. |
| FromPhdr = cantFail(createDRI(DynamicPhdr->p_offset, DynamicPhdr->p_filesz, |
| sizeof(Elf_Dyn))); |
| FromPhdr.SizePrintName = "PT_DYNAMIC size"; |
| FromPhdr.EntSizePrintName = ""; |
| IsPhdrTableValid = !FromPhdr.getAsArrayRef<Elf_Dyn>().empty(); |
| } |
| |
| // Locate the dynamic table described in a section header. |
| // Ignore sh_entsize and use the expected value for entry size explicitly. |
| // This allows us to dump dynamic sections with a broken sh_entsize |
| // field. |
| DynRegionInfo FromSec(ObjF); |
| bool IsSecTableValid = false; |
| if (DynamicSec) { |
| Expected<DynRegionInfo> RegOrErr = |
| createDRI(DynamicSec->sh_offset, DynamicSec->sh_size, sizeof(Elf_Dyn)); |
| if (RegOrErr) { |
| FromSec = *RegOrErr; |
| FromSec.Context = describe(*DynamicSec); |
| FromSec.EntSizePrintName = ""; |
| IsSecTableValid = !FromSec.getAsArrayRef<Elf_Dyn>().empty(); |
| } else { |
| reportUniqueWarning(createError("unable to read the dynamic table from " + |
| describe(*DynamicSec) + ": " + |
| toString(RegOrErr.takeError()))); |
| } |
| } |
| |
| // When we only have information from one of the SHT_DYNAMIC section header or |
| // PT_DYNAMIC program header, just use that. |
| if (!DynamicPhdr || !DynamicSec) { |
| if ((DynamicPhdr && IsPhdrTableValid) || (DynamicSec && IsSecTableValid)) { |
| DynamicTable = DynamicPhdr ? FromPhdr : FromSec; |
| parseDynamicTable(); |
| } else { |
| reportUniqueWarning(createError("no valid dynamic table was found")); |
| } |
| return; |
| } |
| |
| // At this point we have tables found from the section header and from the |
| // dynamic segment. Usually they match, but we have to do sanity checks to |
| // verify that. |
| |
| if (FromPhdr.Addr != FromSec.Addr) |
| reportUniqueWarning(createError("SHT_DYNAMIC section header and PT_DYNAMIC " |
| "program header disagree about " |
| "the location of the dynamic table")); |
| |
| if (!IsPhdrTableValid && !IsSecTableValid) { |
| reportUniqueWarning(createError("no valid dynamic table was found")); |
| return; |
| } |
| |
| // Information in the PT_DYNAMIC program header has priority over the information |
| // in a section header. |
| if (IsPhdrTableValid) { |
| if (!IsSecTableValid) |
| reportUniqueWarning(createError( |
| "SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used")); |
| DynamicTable = FromPhdr; |
| } else { |
| reportUniqueWarning(createError( |
| "PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used")); |
| DynamicTable = FromSec; |
| } |
| |
| parseDynamicTable(); |
| } |
| |
| template <typename ELFT> |
| ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> &O, |
| ScopedPrinter &Writer) |
| : ObjDumper(Writer), ObjF(O), Obj(*O.getELFFile()), DynRelRegion(O), |
| DynRelaRegion(O), DynRelrRegion(O), DynPLTRelRegion(O), DynamicTable(O) { |
| // Dumper reports all non-critical errors as warnings. |
| // It does not print the same warning more than once. |
| WarningHandler = [this](const Twine &Msg) { |
| if (Warnings.insert(Msg.str()).second) |
| reportWarning(createError(Msg), ObjF.getFileName()); |
| return Error::success(); |
| }; |
| |
| if (opts::Output == opts::GNU) |
| ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, *this)); |
| else |
| ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, *this)); |
| |
| if (!O.IsContentValid()) |
| return; |
| |
| typename ELFT::ShdrRange Sections = cantFail(Obj.sections()); |
| for (const Elf_Shdr &Sec : Sections) { |
| switch (Sec.sh_type) { |
| case ELF::SHT_SYMTAB: |
| if (!DotSymtabSec) |
| DotSymtabSec = &Sec; |
| break; |
| case ELF::SHT_DYNSYM: |
| if (!DotDynsymSec) |
| DotDynsymSec = &Sec; |
| |
| if (!DynSymRegion) { |
| Expected<DynRegionInfo> RegOrErr = |
| createDRI(Sec.sh_offset, Sec.sh_size, Sec.sh_entsize); |
| if (RegOrErr) { |
| DynSymRegion = *RegOrErr; |
| DynSymRegion->Context = describe(Sec); |
| |
| if (Expected<StringRef> E = Obj.getStringTableForSymtab(Sec)) |
| DynamicStringTable = *E; |
| else |
| reportWarning(E.takeError(), ObjF.getFileName()); |
| } else { |
| reportUniqueWarning(createError( |
| "unable to read dynamic symbols from " + describe(Sec) + ": " + |
| toString(RegOrErr.takeError()))); |
| } |
| } |
| break; |
| case ELF::SHT_SYMTAB_SHNDX: |
| if (Expected<ArrayRef<Elf_Word>> ShndxTableOrErr = Obj.getSHNDXTable(Sec)) |
| ShndxTable = *ShndxTableOrErr; |
| else |
| this->reportUniqueWarning(ShndxTableOrErr.takeError()); |
| break; |
| case ELF::SHT_GNU_versym: |
| if (!SymbolVersionSection) |
| SymbolVersionSection = &Sec; |
| break; |
| case ELF::SHT_GNU_verdef: |
| if (!SymbolVersionDefSection) |
| SymbolVersionDefSection = &Sec; |
| break; |
| case ELF::SHT_GNU_verneed: |
| if (!SymbolVersionNeedSection) |
| SymbolVersionNeedSection = &Sec; |
| break; |
| case ELF::SHT_LLVM_CALL_GRAPH_PROFILE: |
| if (!DotCGProfileSec) |
| DotCGProfileSec = &Sec; |
| break; |
| case ELF::SHT_LLVM_ADDRSIG: |
| if (!DotAddrsigSec) |
| DotAddrsigSec = &Sec; |
| break; |
| } |
| } |
| |
| loadDynamicTable(); |
| } |
| |
| template <typename ELFT> |
| void ELFDumper<ELFT>::parseDynamicTable() { |
| auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * { |
| auto MappedAddrOrError = Obj.toMappedAddr(VAddr); |
| if (!MappedAddrOrError) { |
| Error Err = |
| createError("Unable to parse DT_" + Obj.getDynamicTagAsString(Tag) + |
| ": " + llvm::toString(MappedAddrOrError.takeError())); |
| |
| reportWarning(std::move(Err), ObjF.getFileName()); |
| return nullptr; |
| } |
| return MappedAddrOrError.get(); |
| }; |
| |
| const char *StringTableBegin = nullptr; |
| uint64_t StringTableSize = 0; |
| Optional<DynRegionInfo> DynSymFromTable; |
| for (const Elf_Dyn &Dyn : dynamic_table()) { |
| switch (Dyn.d_tag) { |
| case ELF::DT_HASH: |
| HashTable = reinterpret_cast<const Elf_Hash *>( |
| toMappedAddr(Dyn.getTag(), Dyn.getPtr())); |
| break; |
| case ELF::DT_GNU_HASH: |
| GnuHashTable = reinterpret_cast<const Elf_GnuHash *>( |
| toMappedAddr(Dyn.getTag(), Dyn.getPtr())); |
| break; |
| case ELF::DT_STRTAB: |
| StringTableBegin = reinterpret_cast<const char *>( |
| toMappedAddr(Dyn.getTag(), Dyn.getPtr())); |
| break; |
| case ELF::DT_STRSZ: |
| StringTableSize = Dyn.getVal(); |
| break; |
| case ELF::DT_SYMTAB: { |
| // If we can't map the DT_SYMTAB value to an address (e.g. when there are |
| // no program headers), we ignore its value. |
| if (const uint8_t *VA = toMappedAddr(Dyn.getTag(), Dyn.getPtr())) { |
| DynSymFromTable.emplace(ObjF); |
| DynSymFromTable->Addr = VA; |
| DynSymFromTable->EntSize = sizeof(Elf_Sym); |
| DynSymFromTable->EntSizePrintName = ""; |
| } |
| break; |
| } |
| case ELF::DT_SYMENT: { |
| uint64_t Val = Dyn.getVal(); |
| if (Val != sizeof(Elf_Sym)) |
| reportWarning(createError("DT_SYMENT value of 0x" + |
| Twine::utohexstr(Val) + |
| " is not the size of a symbol (0x" + |
| Twine::utohexstr(sizeof(Elf_Sym)) + ")"), |
| ObjF.getFileName()); |
| break; |
| } |
| case ELF::DT_RELA: |
| DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); |
| break; |
| case ELF::DT_RELASZ: |
| DynRelaRegion.Size = Dyn.getVal(); |
| DynRelaRegion.SizePrintName = "DT_RELASZ value"; |
| break; |
| case ELF::DT_RELAENT: |
| DynRelaRegion.EntSize = Dyn.getVal(); |
| DynRelaRegion.EntSizePrintName = "DT_RELAENT value"; |
| break; |
| case ELF::DT_SONAME: |
| SONameOffset = Dyn.getVal(); |
| break; |
| case ELF::DT_REL: |
| DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); |
| break; |
| case ELF::DT_RELSZ: |
| DynRelRegion.Size = Dyn.getVal(); |
| DynRelRegion.SizePrintName = "DT_RELSZ value"; |
| break; |
| case ELF::DT_RELENT: |
| DynRelRegion.EntSize = Dyn.getVal(); |
| DynRelRegion.EntSizePrintName = "DT_RELENT value"; |
| break; |
| case ELF::DT_RELR: |
| case ELF::DT_ANDROID_RELR: |
| DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); |
| break; |
| case ELF::DT_RELRSZ: |
| case ELF::DT_ANDROID_RELRSZ: |
| DynRelrRegion.Size = Dyn.getVal(); |
| DynRelrRegion.SizePrintName = Dyn.d_tag == ELF::DT_RELRSZ |
| ? "DT_RELRSZ value" |
| : "DT_ANDROID_RELRSZ value"; |
| break; |
| case ELF::DT_RELRENT: |
| case ELF::DT_ANDROID_RELRENT: |
| DynRelrRegion.EntSize = Dyn.getVal(); |
| DynRelrRegion.EntSizePrintName = Dyn.d_tag == ELF::DT_RELRENT |
| ? "DT_RELRENT value" |
| : "DT_ANDROID_RELRENT value"; |
| break; |
| case ELF::DT_PLTREL: |
| if (Dyn.getVal() == DT_REL) |
| DynPLTRelRegion.EntSize = sizeof(Elf_Rel); |
| else if (Dyn.getVal() == DT_RELA) |
| DynPLTRelRegion.EntSize = sizeof(Elf_Rela); |
| else |
| reportError(createError(Twine("unknown DT_PLTREL value of ") + |
| Twine((uint64_t)Dyn.getVal())), |
| ObjF.getFileName()); |
| DynPLTRelRegion.EntSizePrintName = ""; |
| break; |
| case ELF::DT_JMPREL: |
| DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); |
| break; |
| case ELF::DT_PLTRELSZ: |
| DynPLTRelRegion.Size = Dyn.getVal(); |
| DynPLTRelRegion.SizePrintName = "DT_PLTRELSZ value"; |
| break; |
| } |
| } |
| |
| if (StringTableBegin) { |
| const uint64_t FileSize = Obj.getBufSize(); |
| const uint64_t Offset = (const uint8_t *)StringTableBegin - Obj.base(); |
| if (StringTableSize > FileSize - Offset) |
| reportUniqueWarning(createError( |
| "the dynamic string table at 0x" + Twine::utohexstr(Offset) + |
| " goes past the end of the file (0x" + Twine::utohexstr(FileSize) + |
| ") with DT_STRSZ = 0x" + Twine::utohexstr(StringTableSize))); |
| else |
| DynamicStringTable = StringRef(StringTableBegin, StringTableSize); |
| } |
| |
| const bool IsHashTableSupported = getHashTableEntSize() == 4; |
| if (DynSymRegion) { |
| // Often we find the information about the dynamic symbol table |
| // location in the SHT_DYNSYM section header. However, the value in |
| // DT_SYMTAB has priority, because it is used by dynamic loaders to |
| // locate .dynsym at runtime. The location we find in the section header |
| // and the location we find here should match. |
| if (DynSymFromTable && DynSymFromTable->Addr != DynSymRegion->Addr) |
| reportUniqueWarning( |
| createError("SHT_DYNSYM section header and DT_SYMTAB disagree about " |
| "the location of the dynamic symbol table")); |
| |
| // According to the ELF gABI: "The number of symbol table entries should |
| // equal nchain". Check to see if the DT_HASH hash table nchain value |
| // conflicts with the number of symbols in the dynamic symbol table |
| // according to the section header. |
| if (HashTable && IsHashTableSupported) { |
| if (DynSymRegion->EntSize == 0) |
| reportUniqueWarning( |
| createError("SHT_DYNSYM section has sh_entsize == 0")); |
| else if (HashTable->nchain != DynSymRegion->Size / DynSymRegion->EntSize) |
| reportUniqueWarning(createError( |
| "hash table nchain (" + Twine(HashTable->nchain) + |
| ") differs from symbol count derived from SHT_DYNSYM section " |
| "header (" + |
| Twine(DynSymRegion->Size / DynSymRegion->EntSize) + ")")); |
| } |
| } |
| |
| // Delay the creation of the actual dynamic symbol table until now, so that |
| // checks can always be made against the section header-based properties, |
| // without worrying about tag order. |
| if (DynSymFromTable) { |
| if (!DynSymRegion) { |
| DynSymRegion = DynSymFromTable; |
| } else { |
| DynSymRegion->Addr = DynSymFromTable->Addr; |
| DynSymRegion->EntSize = DynSymFromTable->EntSize; |
| DynSymRegion->EntSizePrintName = DynSymFromTable->EntSizePrintName; |
| } |
| } |
| |
| // Derive the dynamic symbol table size from the DT_HASH hash table, if |
| // present. |
| if (HashTable && IsHashTableSupported && DynSymRegion) { |
| const uint64_t FileSize = Obj.getBufSize(); |
| const uint64_t DerivedSize = |
| (uint64_t)HashTable->nchain * DynSymRegion->EntSize; |
| const uint64_t Offset = (const uint8_t *)DynSymRegion->Addr - Obj.base(); |
| if (DerivedSize > FileSize - Offset) |
| reportUniqueWarning(createError( |
| "the size (0x" + Twine::utohexstr(DerivedSize) + |
| ") of the dynamic symbol table at 0x" + Twine::utohexstr(Offset) + |
| ", derived from the hash table, goes past the end of the file (0x" + |
| Twine::utohexstr(FileSize) + ") and will be ignored")); |
| else |
| DynSymRegion->Size = HashTable->nchain * DynSymRegion->EntSize; |
| } |
| } |
| |
| template <typename ELFT> |
| typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { |
| return DynRelRegion.getAsArrayRef<Elf_Rel>(); |
| } |
| |
| template <typename ELFT> |
| typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { |
| return DynRelaRegion.getAsArrayRef<Elf_Rela>(); |
| } |
| |
| template <typename ELFT> |
| typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const { |
| return DynRelrRegion.getAsArrayRef<Elf_Relr>(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printFileHeaders() { |
| ELFDumperStyle->printFileHeaders(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printSectionHeaders() { |
| ELFDumperStyle->printSectionHeaders(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printRelocations() { |
| ELFDumperStyle->printRelocations(); |
| } |
| |
| template <class ELFT> |
| void ELFDumper<ELFT>::printProgramHeaders( |
| bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { |
| ELFDumperStyle->printProgramHeaders(PrintProgramHeaders, PrintSectionMapping); |
| } |
| |
| template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { |
| // Dump version symbol section. |
| ELFDumperStyle->printVersionSymbolSection(SymbolVersionSection); |
| |
| // Dump version definition section. |
| ELFDumperStyle->printVersionDefinitionSection(SymbolVersionDefSection); |
| |
| // Dump version dependency section. |
| ELFDumperStyle->printVersionDependencySection(SymbolVersionNeedSection); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printDependentLibs() { |
| ELFDumperStyle->printDependentLibs(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { |
| ELFDumperStyle->printDynamicRelocations(); |
| } |
| |
| template <class ELFT> |
| void ELFDumper<ELFT>::printSymbols(bool PrintSymbols, |
| bool PrintDynamicSymbols) { |
| ELFDumperStyle->printSymbols(PrintSymbols, PrintDynamicSymbols); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printHashSymbols() { |
| ELFDumperStyle->printHashSymbols(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printSectionDetails() { |
| ELFDumperStyle->printSectionDetails(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printHashHistograms() { |
| ELFDumperStyle->printHashHistograms(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printCGProfile() { |
| ELFDumperStyle->printCGProfile(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printNotes() { |
| ELFDumperStyle->printNotes(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() { |
| ELFDumperStyle->printELFLinkerOptions(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printStackSizes() { |
| ELFDumperStyle->printStackSizes(); |
| } |
| |
| #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ |
| { #enum, prefix##_##enum } |
| |
| static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { |
| LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), |
| LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), |
| LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), |
| LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), |
| LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) |
| }; |
| |
| static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON), |
| LLVM_READOBJ_DT_FLAG_ENT(DF_1, PIE), |
| }; |
| |
| static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), |
| LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), |
| LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) |
| }; |
| |
| #undef LLVM_READOBJ_DT_FLAG_ENT |
| |
| template <typename T, typename TFlag> |
| void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { |
| SmallVector<EnumEntry<TFlag>, 10> SetFlags; |
| for (const EnumEntry<TFlag> &Flag : Flags) |
| if (Flag.Value != 0 && (Value & Flag.Value) == Flag.Value) |
| SetFlags.push_back(Flag); |
| |
| for (const EnumEntry<TFlag> &Flag : SetFlags) |
| OS << Flag.Name << " "; |
| } |
| |
| template <class ELFT> |
| const typename ELFT::Shdr * |
| ELFDumper<ELFT>::findSectionByName(StringRef Name) const { |
| for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) { |
| if (Expected<StringRef> NameOrErr = Obj.getSectionName(Shdr)) { |
| if (*NameOrErr == Name) |
| return &Shdr; |
| } else { |
| reportUniqueWarning(createError("unable to read the name of " + |
| describe(Shdr) + ": " + |
| toString(NameOrErr.takeError()))); |
| } |
| } |
| return nullptr; |
| } |
| |
| template <class ELFT> |
| std::string ELFDumper<ELFT>::getDynamicEntry(uint64_t Type, |
| uint64_t Value) const { |
| auto FormatHexValue = [](uint64_t V) { |
| std::string Str; |
| raw_string_ostream OS(Str); |
| const char *ConvChar = |
| (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; |
| OS << format(ConvChar, V); |
| return OS.str(); |
| }; |
| |
| auto FormatFlags = [](uint64_t V, |
| llvm::ArrayRef<llvm::EnumEntry<unsigned int>> Array) { |
| std::string Str; |
| raw_string_ostream OS(Str); |
| printFlags(V, Array, OS); |
| return OS.str(); |
| }; |
| |
| // Handle custom printing of architecture specific tags |
| switch (Obj.getHeader().e_machine) { |
| case EM_AARCH64: |
| switch (Type) { |
| case DT_AARCH64_BTI_PLT: |
| case DT_AARCH64_PAC_PLT: |
| return std::to_string(Value); |
| default: |
| break; |
| } |
| break; |
| case EM_HEXAGON: |
| switch (Type) { |
| case DT_HEXAGON_VER: |
| return std::to_string(Value); |
| case DT_HEXAGON_SYMSZ: |
| case DT_HEXAGON_PLT: |
| return FormatHexValue(Value); |
| default: |
| break; |
| } |
| break; |
| case EM_MIPS: |
| switch (Type) { |
| case DT_MIPS_RLD_VERSION: |
| case DT_MIPS_LOCAL_GOTNO: |
| case DT_MIPS_SYMTABNO: |
| case DT_MIPS_UNREFEXTNO: |
| return std::to_string(Value); |
| case DT_MIPS_TIME_STAMP: |
| case DT_MIPS_ICHECKSUM: |
| case DT_MIPS_IVERSION: |
| case DT_MIPS_BASE_ADDRESS: |
| case DT_MIPS_MSYM: |
| case DT_MIPS_CONFLICT: |
| case DT_MIPS_LIBLIST: |
| case DT_MIPS_CONFLICTNO: |
| case DT_MIPS_LIBLISTNO: |
| case DT_MIPS_GOTSYM: |
| case DT_MIPS_HIPAGENO: |
| case DT_MIPS_RLD_MAP: |
| case DT_MIPS_DELTA_CLASS: |
| case DT_MIPS_DELTA_CLASS_NO: |
| case DT_MIPS_DELTA_INSTANCE: |
| case DT_MIPS_DELTA_RELOC: |
| case DT_MIPS_DELTA_RELOC_NO: |
| case DT_MIPS_DELTA_SYM: |
| case DT_MIPS_DELTA_SYM_NO: |
| case DT_MIPS_DELTA_CLASSSYM: |
| case DT_MIPS_DELTA_CLASSSYM_NO: |
| case DT_MIPS_CXX_FLAGS: |
| case DT_MIPS_PIXIE_INIT: |
| case DT_MIPS_SYMBOL_LIB: |
| case DT_MIPS_LOCALPAGE_GOTIDX: |
| case DT_MIPS_LOCAL_GOTIDX: |
| case DT_MIPS_HIDDEN_GOTIDX: |
| case DT_MIPS_PROTECTED_GOTIDX: |
| case DT_MIPS_OPTIONS: |
| case DT_MIPS_INTERFACE: |
| case DT_MIPS_DYNSTR_ALIGN: |
| case DT_MIPS_INTERFACE_SIZE: |
| case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: |
| case DT_MIPS_PERF_SUFFIX: |
| case DT_MIPS_COMPACT_SIZE: |
| case DT_MIPS_GP_VALUE: |
| case DT_MIPS_AUX_DYNAMIC: |
| case DT_MIPS_PLTGOT: |
| case DT_MIPS_RWPLT: |
| case DT_MIPS_RLD_MAP_REL: |
| return FormatHexValue(Value); |
| case DT_MIPS_FLAGS: |
| return FormatFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags)); |
| default: |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| switch (Type) { |
| case DT_PLTREL: |
| if (Value == DT_REL) |
| return "REL"; |
| if (Value == DT_RELA) |
| return "RELA"; |
| LLVM_FALLTHROUGH; |
| case DT_PLTGOT: |
| case DT_HASH: |
| case DT_STRTAB: |
| case DT_SYMTAB: |
| case DT_RELA: |
| case DT_INIT: |
| case DT_FINI: |
| case DT_REL: |
| case DT_JMPREL: |
| case DT_INIT_ARRAY: |
| case DT_FINI_ARRAY: |
| case DT_PREINIT_ARRAY: |
| case DT_DEBUG: |
| case DT_VERDEF: |
| case DT_VERNEED: |
| case DT_VERSYM: |
| case DT_GNU_HASH: |
| case DT_NULL: |
| return FormatHexValue(Value); |
| case DT_RELACOUNT: |
| case DT_RELCOUNT: |
| case DT_VERDEFNUM: |
| case DT_VERNEEDNUM: |
| return std::to_string(Value); |
| case DT_PLTRELSZ: |
| case DT_RELASZ: |
| case DT_RELAENT: |
| case DT_STRSZ: |
| case DT_SYMENT: |
| case DT_RELSZ: |
| case DT_RELENT: |
| case DT_INIT_ARRAYSZ: |
| case DT_FINI_ARRAYSZ: |
| case DT_PREINIT_ARRAYSZ: |
| case DT_ANDROID_RELSZ: |
| case DT_ANDROID_RELASZ: |
| return std::to_string(Value) + " (bytes)"; |
| case DT_NEEDED: |
| case DT_SONAME: |
| case DT_AUXILIARY: |
| case DT_USED: |
| case DT_FILTER: |
| case DT_RPATH: |
| case DT_RUNPATH: { |
| const std::map<uint64_t, const char *> TagNames = { |
| {DT_NEEDED, "Shared library"}, {DT_SONAME, "Library soname"}, |
| {DT_AUXILIARY, "Auxiliary library"}, {DT_USED, "Not needed object"}, |
| {DT_FILTER, "Filter library"}, {DT_RPATH, "Library rpath"}, |
| {DT_RUNPATH, "Library runpath"}, |
| }; |
| |
| return (Twine(TagNames.at(Type)) + ": [" + getDynamicString(Value) + "]") |
| .str(); |
| } |
| case DT_FLAGS: |
| return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags)); |
| case DT_FLAGS_1: |
| return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags1)); |
| default: |
| return FormatHexValue(Value); |
| } |
| } |
| |
| template <class ELFT> |
| StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { |
| if (DynamicStringTable.empty() && !DynamicStringTable.data()) { |
| reportUniqueWarning(createError("string table was not found")); |
| return "<?>"; |
| } |
| |
| auto WarnAndReturn = [this](const Twine &Msg, uint64_t Offset) { |
| reportUniqueWarning(createError("string table at offset 0x" + |
| Twine::utohexstr(Offset) + Msg)); |
| return "<?>"; |
| }; |
| |
| const uint64_t FileSize = Obj.getBufSize(); |
| const uint64_t Offset = |
| (const uint8_t *)DynamicStringTable.data() - Obj.base(); |
| if (DynamicStringTable.size() > FileSize - Offset) |
| return WarnAndReturn(" with size 0x" + |
| Twine::utohexstr(DynamicStringTable.size()) + |
| " goes past the end of the file (0x" + |
| Twine::utohexstr(FileSize) + ")", |
| Offset); |
| |
| if (Value >= DynamicStringTable.size()) |
| return WarnAndReturn( |
| ": unable to read the string at 0x" + Twine::utohexstr(Offset + Value) + |
| ": it goes past the end of the table (0x" + |
| Twine::utohexstr(Offset + DynamicStringTable.size()) + ")", |
| Offset); |
| |
| if (DynamicStringTable.back() != '\0') |
| return WarnAndReturn(": unable to read the string at 0x" + |
| Twine::utohexstr(Offset + Value) + |
| ": the string table is not null-terminated", |
| Offset); |
| |
| return DynamicStringTable.data() + Value; |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() { |
| DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF); |
| Ctx.printUnwindInformation(); |
| } |
| |
| namespace { |
| |
| template <> void ELFDumper<ELF32LE>::printUnwindInfo() { |
| if (Obj.getHeader().e_machine == EM_ARM) { |
| ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF.getFileName(), |
| DotSymtabSec); |
| Ctx.PrintUnwindInformation(); |
| } |
| DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF); |
| Ctx.printUnwindInformation(); |
| } |
| |
| } // end anonymous namespace |
| |
| template <class ELFT> void ELFDumper<ELFT>::printDynamicTable() { |
| ELFDumperStyle->printDynamic(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() { |
| ListScope D(W, "NeededLibraries"); |
| |
| std::vector<StringRef> Libs; |
| for (const auto &Entry : dynamic_table()) |
| if (Entry.d_tag == ELF::DT_NEEDED) |
| Libs.push_back(getDynamicString(Entry.d_un.d_val)); |
| |
| llvm::sort(Libs); |
| |
| for (StringRef L : Libs) |
| W.startLine() << L << "\n"; |
| } |
| |
| template <class ELFT> |
| static Error checkHashTable(const ELFDumper<ELFT> &Dumper, |
| const typename ELFT::Hash *H, |
| bool *IsHeaderValid = nullptr) { |
| const ELFFile<ELFT> &Obj = *Dumper.getElfObject().getELFFile(); |
| const uint64_t SecOffset = (const uint8_t *)H - Obj.base(); |
| if (Dumper.getHashTableEntSize() == 8) { |
| auto It = llvm::find_if(ElfMachineType, [&](const EnumEntry<unsigned> &E) { |
| return E.Value == Obj.getHeader().e_machine; |
| }); |
| if (IsHeaderValid) |
| *IsHeaderValid = false; |
| return createError("the hash table at 0x" + Twine::utohexstr(SecOffset) + |
| " is not supported: it contains non-standard 8 " |
| "byte entries on " + |
| It->AltName + " platform"); |
| } |
| |
| auto MakeError = [&](const Twine &Msg = "") { |
| return createError("the hash table at offset 0x" + |
| Twine::utohexstr(SecOffset) + |
| " goes past the end of the file (0x" + |
| Twine::utohexstr(Obj.getBufSize()) + ")" + Msg); |
| }; |
| |
| // Each SHT_HASH section starts from two 32-bit fields: nbucket and nchain. |
| const unsigned HeaderSize = 2 * sizeof(typename ELFT::Word); |
| |
| if (IsHeaderValid) |
| *IsHeaderValid = Obj.getBufSize() - SecOffset >= HeaderSize; |
| |
| if (Obj.getBufSize() - SecOffset < HeaderSize) |
| return MakeError(); |
| |
| if (Obj.getBufSize() - SecOffset - HeaderSize < |
| ((uint64_t)H->nbucket + H->nchain) * sizeof(typename ELFT::Word)) |
| return MakeError(", nbucket = " + Twine(H->nbucket) + |
| ", nchain = " + Twine(H->nchain)); |
| return Error::success(); |
| } |
| |
| template <class ELFT> |
| static Error checkGNUHashTable(const ELFFile<ELFT> &Obj, |
| const typename ELFT::GnuHash *GnuHashTable, |
| bool *IsHeaderValid = nullptr) { |
| const uint8_t *TableData = reinterpret_cast<const uint8_t *>(GnuHashTable); |
| assert(TableData >= Obj.base() && TableData < Obj.base() + Obj.getBufSize() && |
| "GnuHashTable must always point to a location inside the file"); |
| |
| uint64_t TableOffset = TableData - Obj.base(); |
| if (IsHeaderValid) |
| *IsHeaderValid = TableOffset + /*Header size:*/ 16 < Obj.getBufSize(); |
| if (TableOffset + 16 + (uint64_t)GnuHashTable->nbuckets * 4 + |
| (uint64_t)GnuHashTable->maskwords * sizeof(typename ELFT::Off) >= |
| Obj.getBufSize()) |
| return createError("unable to dump the SHT_GNU_HASH " |
| "section at 0x" + |
| Twine::utohexstr(TableOffset) + |
| ": it goes past the end of the file"); |
| return Error::success(); |
| } |
| |
| template <typename ELFT> void ELFDumper<ELFT>::printHashTable() { |
| DictScope D(W, "HashTable"); |
| if (!HashTable) |
| return; |
| |
| bool IsHeaderValid; |
| Error Err = checkHashTable(*this, HashTable, &IsHeaderValid); |
| if (IsHeaderValid) { |
| W.printNumber("Num Buckets", HashTable->nbucket); |
| W.printNumber("Num Chains", HashTable->nchain); |
| } |
| |
| if (Err) { |
| reportUniqueWarning(std::move(Err)); |
| return; |
| } |
| |
| W.printList("Buckets", HashTable->buckets()); |
| W.printList("Chains", HashTable->chains()); |
| } |
| |
| template <class ELFT> |
| static Expected<ArrayRef<typename ELFT::Word>> |
| getGnuHashTableChains(Optional<DynRegionInfo> DynSymRegion, |
| const typename ELFT::GnuHash *GnuHashTable) { |
| if (!DynSymRegion) |
| return createError("no dynamic symbol table found"); |
| |
| ArrayRef<typename ELFT::Sym> DynSymTable = |
| DynSymRegion->getAsArrayRef<typename ELFT::Sym>(); |
| size_t NumSyms = DynSymTable.size(); |
| if (!NumSyms) |
| return createError("the dynamic symbol table is empty"); |
| |
| if (GnuHashTable->symndx < NumSyms) |
| return GnuHashTable->values(NumSyms); |
| |
| // A normal empty GNU hash table section produced by linker might have |
| // symndx set to the number of dynamic symbols + 1 (for the zero symbol) |
| // and have dummy null values in the Bloom filter and in the buckets |
| // vector (or no values at all). It happens because the value of symndx is not |
| // important for dynamic loaders when the GNU hash table is empty. They just |
| // skip the whole object during symbol lookup. In such cases, the symndx value |
| // is irrelevant and we should not report a warning. |
| ArrayRef<typename ELFT::Word> Buckets = GnuHashTable->buckets(); |
| if (!llvm::all_of(Buckets, [](typename ELFT::Word V) { return V == 0; })) |
| return createError( |
| "the first hashed symbol index (" + Twine(GnuHashTable->symndx) + |
| ") is greater than or equal to the number of dynamic symbols (" + |
| Twine(NumSyms) + ")"); |
| // There is no way to represent an array of (dynamic symbols count - symndx) |
| // length. |
| return ArrayRef<typename ELFT::Word>(); |
| } |
| |
| template <typename ELFT> |
| void ELFDumper<ELFT>::printGnuHashTable() { |
| DictScope D(W, "GnuHashTable"); |
| if (!GnuHashTable) |
| return; |
| |
| bool IsHeaderValid; |
| Error Err = checkGNUHashTable<ELFT>(Obj, GnuHashTable, &IsHeaderValid); |
| if (IsHeaderValid) { |
| W.printNumber("Num Buckets", GnuHashTable->nbuckets); |
| W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); |
| W.printNumber("Num Mask Words", GnuHashTable->maskwords); |
| W.printNumber("Shift Count", GnuHashTable->shift2); |
| } |
| |
| if (Err) { |
| reportUniqueWarning(std::move(Err)); |
| return; |
| } |
| |
| ArrayRef<typename ELFT::Off> BloomFilter = GnuHashTable->filter(); |
| W.printHexList("Bloom Filter", BloomFilter); |
| |
| ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); |
| W.printList("Buckets", Buckets); |
| |
| Expected<ArrayRef<Elf_Word>> Chains = |
| getGnuHashTableChains<ELFT>(DynSymRegion, GnuHashTable); |
| if (!Chains) { |
| reportUniqueWarning( |
| createError("unable to dump 'Values' for the SHT_GNU_HASH " |
| "section: " + |
| toString(Chains.takeError()))); |
| return; |
| } |
| |
| W.printHexList("Values", *Chains); |
| } |
| |
| template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { |
| StringRef SOName = "<Not found>"; |
| if (SONameOffset) |
| SOName = getDynamicString(*SONameOffset); |
| W.printString("LoadName", SOName); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printArchSpecificInfo() { |
| switch (Obj.getHeader().e_machine) { |
| case EM_ARM: |
| case EM_RISCV: |
| printAttributes(); |
| break; |
| case EM_MIPS: { |
| ELFDumperStyle->printMipsABIFlags(); |
| printMipsOptions(); |
| printMipsReginfo(); |
| MipsGOTParser<ELFT> Parser(*this); |
| if (Error E = Parser.findGOT(dynamic_table(), dynamic_symbols())) |
| reportError(std::move(E), ObjF.getFileName()); |
| else if (!Parser.isGotEmpty()) |
| ELFDumperStyle->printMipsGOT(Parser); |
| |
| if (Error E = Parser.findPLT(dynamic_table())) |
| reportError(std::move(E), ObjF.getFileName()); |
| else if (!Parser.isPltEmpty()) |
| ELFDumperStyle->printMipsPLT(Parser); |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printAttributes() { |
| if (!Obj.isLE()) { |
| W.startLine() << "Attributes not implemented.\n"; |
| return; |
| } |
| |
| const unsigned Machine = Obj.getHeader().e_machine; |
| assert((Machine == EM_ARM || Machine == EM_RISCV) && |
| "Attributes not implemented."); |
| |
| DictScope BA(W, "BuildAttributes"); |
| for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { |
| if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES && |
| Sec.sh_type != ELF::SHT_RISCV_ATTRIBUTES) |
| continue; |
| |
| ArrayRef<uint8_t> Contents = |
| unwrapOrError(ObjF.getFileName(), Obj.getSectionContents(Sec)); |
| if (Contents[0] != ELFAttrs::Format_Version) { |
| reportWarning(createError(Twine("unrecognised FormatVersion: 0x") + |
| Twine::utohexstr(Contents[0])), |
| ObjF.getFileName()); |
| continue; |
| } |
| W.printHex("FormatVersion", Contents[0]); |
| if (Contents.size() == 1) |
| continue; |
| |
| // TODO: Delete the redundant FormatVersion check above. |
| if (Machine == EM_ARM) { |
| if (Error E = ARMAttributeParser(&W).parse(Contents, support::little)) |
| reportWarning(std::move(E), ObjF.getFileName()); |
| } else if (Machine == EM_RISCV) { |
| if (Error E = RISCVAttributeParser(&W).parse(Contents, support::little)) |
| reportWarning(std::move(E), ObjF.getFileName()); |
| } |
| } |
| } |
| |
| namespace { |
| |
| template <class ELFT> class MipsGOTParser { |
| public: |
| TYPEDEF_ELF_TYPES(ELFT) |
| using Entry = typename ELFO::Elf_Addr; |
| using Entries = ArrayRef<Entry>; |
| |
| const bool IsStatic; |
| const ELFO &Obj; |
| const ELFDumper<ELFT> &Dumper; |
| |
| MipsGOTParser(const ELFDumper<ELFT> &D); |
| Error findGOT(Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); |
| Error findPLT(Elf_Dyn_Range DynTable); |
| |
| bool isGotEmpty() const { return GotEntries.empty(); } |
| bool isPltEmpty() const { return PltEntries.empty(); } |
| |
| uint64_t getGp() const; |
| |
| const Entry *getGotLazyResolver() const; |
| const Entry *getGotModulePointer() const; |
| const Entry *getPltLazyResolver() const; |
| const Entry *getPltModulePointer() const; |
| |
| Entries getLocalEntries() const; |
| Entries getGlobalEntries() const; |
| Entries getOtherEntries() const; |
| Entries getPltEntries() const; |
| |
| uint64_t getGotAddress(const Entry * E) const; |
| int64_t getGotOffset(const Entry * E) const; |
| const Elf_Sym *getGotSym(const Entry *E) const; |
| |
| uint64_t getPltAddress(const Entry * E) const; |
| const Elf_Sym *getPltSym(const Entry *E) const; |
| |
| StringRef getPltStrTable() const { return PltStrTable; } |
| const Elf_Shdr *getPltSymTable() const { return PltSymTable; } |
| |
| private: |
| const Elf_Shdr *GotSec; |
| size_t LocalNum; |
| size_t GlobalNum; |
| |
| const Elf_Shdr *PltSec; |
| const Elf_Shdr *PltRelSec; |
| const Elf_Shdr *PltSymTable; |
| StringRef FileName; |
| |
| Elf_Sym_Range GotDynSyms; |
| StringRef PltStrTable; |
| |
| Entries GotEntries; |
| Entries PltEntries; |
| }; |
| |
| } // end anonymous namespace |
| |
| template <class ELFT> |
| MipsGOTParser<ELFT>::MipsGOTParser(const ELFDumper<ELFT> &D) |
| : IsStatic(D.dynamic_table().empty()), Obj(*D.getElfObject().getELFFile()), |
| Dumper(D), GotSec(nullptr), LocalNum(0), GlobalNum(0), PltSec(nullptr), |
| PltRelSec(nullptr), PltSymTable(nullptr), |
| FileName(D.getElfObject().getFileName()) {} |
| |
| template <class ELFT> |
| Error MipsGOTParser<ELFT>::findGOT(Elf_Dyn_Range DynTable, |
| Elf_Sym_Range DynSyms) { |
| // See "Global Offset Table" in Chapter 5 in the following document |
| // for detailed GOT description. |
| // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf |
| |
| // Find static GOT secton. |
| if (IsStatic) { |
| GotSec = Dumper.findSectionByName(".got"); |
| if (!GotSec) |
| return Error::success(); |
| |
| ArrayRef<uint8_t> Content = |
| unwrapOrError(FileName, Obj.getSectionContents(*GotSec)); |
| GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), |
| Content.size() / sizeof(Entry)); |
| LocalNum = GotEntries.size(); |
| return Error::success(); |
| } |
| |
| // Lookup dynamic table tags which define the GOT layout. |
| Optional<uint64_t> DtPltGot; |
| Optional<uint64_t> DtLocalGotNum; |
| Optional<uint64_t> DtGotSym; |
| for (const auto &Entry : DynTable) { |
| switch (Entry.getTag()) { |
| case ELF::DT_PLTGOT: |
| DtPltGot = Entry.getVal(); |
| break; |
| case ELF::DT_MIPS_LOCAL_GOTNO: |
| DtLocalGotNum = Entry.getVal(); |
| break; |
| case ELF::DT_MIPS_GOTSYM: |
| DtGotSym = Entry.getVal(); |
| break; |
| } |
| } |
| |
| if (!DtPltGot && !DtLocalGotNum && !DtGotSym) |
| return Error::success(); |
| |
| if (!DtPltGot) |
| return createError("cannot find PLTGOT dynamic tag"); |
| if (!DtLocalGotNum) |
| return createError("cannot find MIPS_LOCAL_GOTNO dynamic tag"); |
| if (!DtGotSym) |
| return createError("cannot find MIPS_GOTSYM dynamic tag"); |
| |
| size_t DynSymTotal = DynSyms.size(); |
| if (*DtGotSym > DynSymTotal) |
| return createError("DT_MIPS_GOTSYM value (" + Twine(*DtGotSym) + |
| ") exceeds the number of dynamic symbols (" + |
| Twine(DynSymTotal) + ")"); |
| |
| GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot); |
| if (!GotSec) |
| return createError("there is no non-empty GOT section at 0x" + |
| Twine::utohexstr(*DtPltGot)); |
| |
| LocalNum = *DtLocalGotNum; |
| GlobalNum = DynSymTotal - *DtGotSym; |
| |
| ArrayRef<uint8_t> Content = |
| unwrapOrError(FileName, Obj.getSectionContents(*GotSec)); |
| GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), |
| Content.size() / sizeof(Entry)); |
| GotDynSyms = DynSyms.drop_front(*DtGotSym); |
| |
| return Error::success(); |
| } |
| |
| template <class ELFT> |
| Error MipsGOTParser<ELFT>::findPLT(Elf_Dyn_Range DynTable) { |
| // Lookup dynamic table tags which define the PLT layout. |
| Optional<uint64_t> DtMipsPltGot; |
| Optional<uint64_t> DtJmpRel; |
| for (const auto &Entry : DynTable) { |
| switch (Entry.getTag()) { |
| case ELF::DT_MIPS_PLTGOT: |
| DtMipsPltGot = Entry.getVal(); |
| break; |
| case ELF::DT_JMPREL: |
| DtJmpRel = Entry.getVal(); |
| break; |
| } |
| } |
| |
| if (!DtMipsPltGot && !DtJmpRel) |
| return Error::success(); |
| |
| // Find PLT section. |
| if (!DtMipsPltGot) |
| return createError("cannot find MIPS_PLTGOT dynamic tag"); |
| if (!DtJmpRel) |
| return createError("cannot find JMPREL dynamic tag"); |
| |
| PltSec = findNotEmptySectionByAddress(Obj, FileName, *DtMipsPltGot); |
| if (!PltSec) |
| return createError("there is no non-empty PLTGOT section at 0x" + |
| Twine::utohexstr(*DtMipsPltGot)); |
| |
| PltRelSec = findNotEmptySectionByAddress(Obj, FileName, *DtJmpRel); |
| if (!PltRelSec) |
| return createError("there is no non-empty RELPLT section at 0x" + |
| Twine::utohexstr(*DtJmpRel)); |
| |
| if (Expected<ArrayRef<uint8_t>> PltContentOrErr = |
| Obj.getSectionContents(*PltSec)) |
| PltEntries = |
| Entries(reinterpret_cast<const Entry *>(PltContentOrErr->data()), |
| PltContentOrErr->size() / sizeof(Entry)); |
| else |
| return createError("unable to read PLTGOT section content: " + |
| toString(PltContentOrErr.takeError())); |
| |
| if (Expected<const Elf_Shdr *> PltSymTableOrErr = |
| Obj.getSection(PltRelSec->sh_link)) |
| PltSymTable = *PltSymTableOrErr; |
| else |
| return createError("unable to get a symbol table linked to the " + |
| describe(Obj, *PltRelSec) + ": " + |
| toString(PltSymTableOrErr.takeError())); |
| |
| if (Expected<StringRef> StrTabOrErr = |
| Obj.getStringTableForSymtab(*PltSymTable)) |
| PltStrTable = *StrTabOrErr; |
| else |
| return createError("unable to get a string table for the " + |
| describe(Obj, *PltSymTable) + ": " + |
| toString(StrTabOrErr.takeError())); |
| |
| return Error::success(); |
| } |
| |
| template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { |
| return GotSec->sh_addr + 0x7ff0; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Entry * |
| MipsGOTParser<ELFT>::getGotLazyResolver() const { |
| return LocalNum > 0 ? &GotEntries[0] : nullptr; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Entry * |
| MipsGOTParser<ELFT>::getGotModulePointer() const { |
| if (LocalNum < 2) |
| return nullptr; |
| const Entry &E = GotEntries[1]; |
| if ((E >> (sizeof(Entry) * 8 - 1)) == 0) |
| return nullptr; |
| return &E; |
| } |
| |
| template <class ELFT> |
| typename MipsGOTParser<ELFT>::Entries |
| MipsGOTParser<ELFT>::getLocalEntries() const { |
| size_t Skip = getGotModulePointer() ? 2 : 1; |
| if (LocalNum - Skip <= 0) |
| return Entries(); |
| return GotEntries.slice(Skip, LocalNum - Skip); |
| } |
| |
| template <class ELFT> |
| typename MipsGOTParser<ELFT>::Entries |
| MipsGOTParser<ELFT>::getGlobalEntries() const { |
| if (GlobalNum == 0) |
| return Entries(); |
| return GotEntries.slice(LocalNum, GlobalNum); |
| } |
| |
| template <class ELFT> |
| typename MipsGOTParser<ELFT>::Entries |
| MipsGOTParser<ELFT>::getOtherEntries() const { |
| size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; |
| if (OtherNum == 0) |
| return Entries(); |
| return GotEntries.slice(LocalNum + GlobalNum, OtherNum); |
| } |
| |
| template <class ELFT> |
| uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { |
| int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); |
| return GotSec->sh_addr + Offset; |
| } |
| |
| template <class ELFT> |
| int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { |
| int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); |
| return Offset - 0x7ff0; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Elf_Sym * |
| MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { |
| int64_t Offset = std::distance(GotEntries.data(), E); |
| return &GotDynSyms[Offset - LocalNum]; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Entry * |
| MipsGOTParser<ELFT>::getPltLazyResolver() const { |
| return PltEntries.empty() ? nullptr : &PltEntries[0]; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Entry * |
| MipsGOTParser<ELFT>::getPltModulePointer() const { |
| return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; |
| } |
| |
| template <class ELFT> |
| typename MipsGOTParser<ELFT>::Entries |
| MipsGOTParser<ELFT>::getPltEntries() const { |
| if (PltEntries.size() <= 2) |
| return Entries(); |
| return PltEntries.slice(2, PltEntries.size() - 2); |
| } |
| |
| template <class ELFT> |
| uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { |
| int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); |
| return PltSec->sh_addr + Offset; |
| } |
| |
| template <class ELFT> |
| const typename MipsGOTParser<ELFT>::Elf_Sym * |
| MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { |
| int64_t Offset = std::distance(getPltEntries().data(), E); |
| if (PltRelSec->sh_type == ELF::SHT_REL) { |
| Elf_Rel_Range Rels = unwrapOrError(FileName, Obj.rels(*PltRelSec)); |
| return unwrapOrError(FileName, |
| Obj.getRelocationSymbol(Rels[Offset], PltSymTable)); |
| } else { |
| Elf_Rela_Range Rels = unwrapOrError(FileName, Obj.relas(*PltRelSec)); |
| return unwrapOrError(FileName, |
| Obj.getRelocationSymbol(Rels[Offset], PltSymTable)); |
| } |
| } |
| |
| static const EnumEntry<unsigned> ElfMipsISAExtType[] = { |
| {"None", Mips::AFL_EXT_NONE}, |
| {"Broadcom SB-1", Mips::AFL_EXT_SB1}, |
| {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, |
| {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, |
| {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, |
| {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, |
| {"LSI R4010", Mips::AFL_EXT_4010}, |
| {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, |
| {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, |
| {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, |
| {"MIPS R4650", Mips::AFL_EXT_4650}, |
| {"MIPS R5900", Mips::AFL_EXT_5900}, |
| {"MIPS R10000", Mips::AFL_EXT_10000}, |
| {"NEC VR4100", Mips::AFL_EXT_4100}, |
| {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, |
| {"NEC VR4120", Mips::AFL_EXT_4120}, |
| {"NEC VR5400", Mips::AFL_EXT_5400}, |
| {"NEC VR5500", Mips::AFL_EXT_5500}, |
| {"RMI Xlr", Mips::AFL_EXT_XLR}, |
| {"Toshiba R3900", Mips::AFL_EXT_3900} |
| }; |
| |
| static const EnumEntry<unsigned> ElfMipsASEFlags[] = { |
| {"DSP", Mips::AFL_ASE_DSP}, |
| {"DSPR2", Mips::AFL_ASE_DSPR2}, |
| {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, |
| {"MCU", Mips::AFL_ASE_MCU}, |
| {"MDMX", Mips::AFL_ASE_MDMX}, |
| {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, |
| {"MT", Mips::AFL_ASE_MT}, |
| {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, |
| {"VZ", Mips::AFL_ASE_VIRT}, |
| {"MSA", Mips::AFL_ASE_MSA}, |
| {"MIPS16", Mips::AFL_ASE_MIPS16}, |
| {"microMIPS", Mips::AFL_ASE_MICROMIPS}, |
| {"XPA", Mips::AFL_ASE_XPA}, |
| {"CRC", Mips::AFL_ASE_CRC}, |
| {"GINV", Mips::AFL_ASE_GINV}, |
| }; |
| |
| static const EnumEntry<unsigned> ElfMipsFpABIType[] = { |
| {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, |
| {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, |
| {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, |
| {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, |
| {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", |
| Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, |
| {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, |
| {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, |
| {"Hard float compat (32-bit CPU, 64-bit FPU)", |
| Mips::Val_GNU_MIPS_ABI_FP_64A} |
| }; |
| |
| static const EnumEntry<unsigned> ElfMipsFlags1[] { |
| {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, |
| }; |
| |
| static int getMipsRegisterSize(uint8_t Flag) { |
| switch (Flag) { |
| case Mips::AFL_REG_NONE: |
| return 0; |
| case Mips::AFL_REG_32: |
| return 32; |
| case Mips::AFL_REG_64: |
| return 64; |
| case Mips::AFL_REG_128: |
| return 128; |
| default: |
| return -1; |
| } |
| } |
| |
| template <class ELFT> |
| static void printMipsReginfoData(ScopedPrinter &W, |
| const Elf_Mips_RegInfo<ELFT> &Reginfo) { |
| W.printHex("GP", Reginfo.ri_gp_value); |
| W.printHex("General Mask", Reginfo.ri_gprmask); |
| W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); |
| W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); |
| W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); |
| W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { |
| const Elf_Shdr *RegInfoSec = findSectionByName(".reginfo"); |
| if (!RegInfoSec) { |
| W.startLine() << "There is no .reginfo section in the file.\n"; |
| return; |
| } |
| |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = |
| Obj.getSectionContents(*RegInfoSec); |
| if (!ContentsOrErr) { |
| this->reportUniqueWarning(createError( |
| "unable to read the content of the .reginfo section (" + |
| describe(*RegInfoSec) + "): " + toString(ContentsOrErr.takeError()))); |
| return; |
| } |
| |
| if (ContentsOrErr->size() < sizeof(Elf_Mips_RegInfo<ELFT>)) { |
| this->reportUniqueWarning( |
| createError("the .reginfo section has an invalid size (0x" + |
| Twine::utohexstr(ContentsOrErr->size()) + ")")); |
| return; |
| } |
| |
| DictScope GS(W, "MIPS RegInfo"); |
| printMipsReginfoData(W, *reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>( |
| ContentsOrErr->data())); |
| } |
| |
| template <class ELFT> |
| static Expected<const Elf_Mips_Options<ELFT> *> |
| readMipsOptions(const uint8_t *SecBegin, ArrayRef<uint8_t> &SecData, |
| bool &IsSupported) { |
| if (SecData.size() < sizeof(Elf_Mips_Options<ELFT>)) |
| return createError("the .MIPS.options section has an invalid size (0x" + |
| Twine::utohexstr(SecData.size()) + ")"); |
| |
| const Elf_Mips_Options<ELFT> *O = |
| reinterpret_cast<const Elf_Mips_Options<ELFT> *>(SecData.data()); |
| const uint8_t Size = O->size; |
| if (Size > SecData.size()) { |
| const uint64_t Offset = SecData.data() - SecBegin; |
| const uint64_t SecSize = Offset + SecData.size(); |
| return createError("a descriptor of size 0x" + Twine::utohexstr(Size) + |
| " at offset 0x" + Twine::utohexstr(Offset) + |
| " goes past the end of the .MIPS.options " |
| "section of size 0x" + |
| Twine::utohexstr(SecSize)); |
| } |
| |
| IsSupported = O->kind == ODK_REGINFO; |
| const size_t ExpectedSize = |
| sizeof(Elf_Mips_Options<ELFT>) + sizeof(Elf_Mips_RegInfo<ELFT>); |
| |
| if (IsSupported) |
| if (Size < ExpectedSize) |
| return createError( |
| "a .MIPS.options entry of kind " + |
| Twine(getElfMipsOptionsOdkType(O->kind)) + |
| " has an invalid size (0x" + Twine::utohexstr(Size) + |
| "), the expected size is 0x" + Twine::utohexstr(ExpectedSize)); |
| |
| SecData = SecData.drop_front(Size); |
| return O; |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { |
| const Elf_Shdr *MipsOpts = findSectionByName(".MIPS.options"); |
| if (!MipsOpts) { |
| W.startLine() << "There is no .MIPS.options section in the file.\n"; |
| return; |
| } |
| |
| DictScope GS(W, "MIPS Options"); |
| |
| ArrayRef<uint8_t> Data = |
| unwrapOrError(ObjF.getFileName(), Obj.getSectionContents(*MipsOpts)); |
| const uint8_t *const SecBegin = Data.begin(); |
| while (!Data.empty()) { |
| bool IsSupported; |
| Expected<const Elf_Mips_Options<ELFT> *> OptsOrErr = |
| readMipsOptions<ELFT>(SecBegin, Data, IsSupported); |
| if (!OptsOrErr) { |
| reportUniqueWarning(OptsOrErr.takeError()); |
| break; |
| } |
| |
| unsigned Kind = (*OptsOrErr)->kind; |
| const char *Type = getElfMipsOptionsOdkType(Kind); |
| if (!IsSupported) { |
| W.startLine() << "Unsupported MIPS options tag: " << Type << " (" << Kind |
| << ")\n"; |
| continue; |
| } |
| |
| DictScope GS(W, Type); |
| if (Kind == ODK_REGINFO) |
| printMipsReginfoData(W, (*OptsOrErr)->getRegInfo()); |
| else |
| llvm_unreachable("unexpected .MIPS.options section descriptor kind"); |
| } |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { |
| const Elf_Shdr *StackMapSection = findSectionByName(".llvm_stackmaps"); |
| if (!StackMapSection) |
| return; |
| |
| auto Warn = [&](Error &&E) { |
| this->reportUniqueWarning(createError("unable to read the stack map from " + |
| describe(*StackMapSection) + ": " + |
| toString(std::move(E)))); |
| }; |
| |
| Expected<ArrayRef<uint8_t>> ContentOrErr = |
| Obj.getSectionContents(*StackMapSection); |
| if (!ContentOrErr) { |
| Warn(ContentOrErr.takeError()); |
| return; |
| } |
| |
| if (Error E = StackMapParser<ELFT::TargetEndianness>::validateHeader( |
| *ContentOrErr)) { |
| Warn(std::move(E)); |
| return; |
| } |
| |
| prettyPrintStackMap(W, StackMapParser<ELFT::TargetEndianness>(*ContentOrErr)); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { |
| ELFDumperStyle->printGroupSections(); |
| } |
| |
| template <class ELFT> void ELFDumper<ELFT>::printAddrsig() { |
| ELFDumperStyle->printAddrsig(); |
| } |
| |
| static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, |
| StringRef Str2) { |
| OS.PadToColumn(2u); |
| OS << Str1; |
| OS.PadToColumn(37u); |
| OS << Str2 << "\n"; |
| OS.flush(); |
| } |
| |
| template <class ELFT> |
| static std::string getSectionHeadersNumString(const ELFFile<ELFT> &Obj, |
| StringRef FileName) { |
| const typename ELFT::Ehdr &ElfHeader = Obj.getHeader(); |
| if (ElfHeader.e_shnum != 0) |
| return to_string(ElfHeader.e_shnum); |
| |
| Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections(); |
| if (!ArrOrErr) { |
| // In this case we can ignore an error, because we have already reported a |
| // warning about the broken section header table earlier. |
| consumeError(ArrOrErr.takeError()); |
| return "<?>"; |
| } |
| |
| if (ArrOrErr->empty()) |
| return "0"; |
| return "0 (" + to_string((*ArrOrErr)[0].sh_size) + ")"; |
| } |
| |
| template <class ELFT> |
| static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> &Obj, |
| StringRef FileName) { |
| const typename ELFT::Ehdr &ElfHeader = Obj.getHeader(); |
| if (ElfHeader.e_shstrndx != SHN_XINDEX) |
| return to_string(ElfHeader.e_shstrndx); |
| |
| Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections(); |
| if (!ArrOrErr) { |
| // In this case we can ignore an error, because we have already reported a |
| // warning about the broken section header table earlier. |
| consumeError(ArrOrErr.takeError()); |
| return "<?>"; |
| } |
| |
| if (ArrOrErr->empty()) |
| return "65535 (corrupt: out of range)"; |
| return to_string(ElfHeader.e_shstrndx) + " (" + |
| to_string((*ArrOrErr)[0].sh_link) + ")"; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printFileHeaders() { |
| const Elf_Ehdr &e = this->Obj.getHeader(); |
| OS << "ELF Header:\n"; |
| OS << " Magic: "; |
| std::string Str; |
| for (int i = 0; i < ELF::EI_NIDENT; i++) |
| OS << format(" %02x", static_cast<int>(e.e_ident[i])); |
| OS << "\n"; |
| Str = printEnum(e.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); |
| printFields(OS, "Class:", Str); |
| Str = printEnum(e.e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); |
| printFields(OS, "Data:", Str); |
| OS.PadToColumn(2u); |
| OS << "Version:"; |
| OS.PadToColumn(37u); |
| OS << to_hexString(e.e_ident[ELF::EI_VERSION]); |
| if (e.e_version == ELF::EV_CURRENT) |
| OS << " (current)"; |
| OS << "\n"; |
| Str = printEnum(e.e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); |
| printFields(OS, "OS/ABI:", Str); |
| printFields(OS, |
| "ABI Version:", std::to_string(e.e_ident[ELF::EI_ABIVERSION])); |
| Str = printEnum(e.e_type, makeArrayRef(ElfObjectFileType)); |
| printFields(OS, "Type:", Str); |
| Str = printEnum(e.e_machine, makeArrayRef(ElfMachineType)); |
| printFields(OS, "Machine:", Str); |
| Str = "0x" + to_hexString(e.e_version); |
| printFields(OS, "Version:", Str); |
| Str = "0x" + to_hexString(e.e_entry); |
| printFields(OS, "Entry point address:", Str); |
| Str = to_string(e.e_phoff) + " (bytes into file)"; |
| printFields(OS, "Start of program headers:", Str); |
| Str = to_string(e.e_shoff) + " (bytes into file)"; |
| printFields(OS, "Start of section headers:", Str); |
| std::string ElfFlags; |
| if (e.e_machine == EM_MIPS) |
| ElfFlags = |
| printFlags(e.e_flags, makeArrayRef(ElfHeaderMipsFlags), |
| unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), |
| unsigned(ELF::EF_MIPS_MACH)); |
| else if (e.e_machine == EM_RISCV) |
| ElfFlags = printFlags(e.e_flags, makeArrayRef(ElfHeaderRISCVFlags)); |
| Str = "0x" + to_hexString(e.e_flags); |
| if (!ElfFlags.empty()) |
| Str = Str + ", " + ElfFlags; |
| printFields(OS, "Flags:", Str); |
| Str = to_string(e.e_ehsize) + " (bytes)"; |
| printFields(OS, "Size of this header:", Str); |
| Str = to_string(e.e_phentsize) + " (bytes)"; |
| printFields(OS, "Size of program headers:", Str); |
| Str = to_string(e.e_phnum); |
| printFields(OS, "Number of program headers:", Str); |
| Str = to_string(e.e_shentsize) + " (bytes)"; |
| printFields(OS, "Size of section headers:", Str); |
| Str = getSectionHeadersNumString(this->Obj, this->FileName); |
| printFields(OS, "Number of section headers:", Str); |
| Str = getSectionHeaderTableIndexString(this->Obj, this->FileName); |
| printFields(OS, "Section header string table index:", Str); |
| } |
| |
| template <class ELFT> std::vector<GroupSection> DumpStyle<ELFT>::getGroups() { |
| auto GetSignature = [&](const Elf_Sym &Sym, unsigned SymNdx, |
| const Elf_Shdr &Symtab) -> StringRef { |
| Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(Symtab); |
| if (!StrTableOrErr) { |
| reportUniqueWarning(createError("unable to get the string table for " + |
| describe(Obj, Symtab) + ": " + |
| toString(StrTableOrErr.takeError()))); |
| return "<?>"; |
| } |
| |
| StringRef Strings = *StrTableOrErr; |
| if (Sym.st_name >= Strings.size()) { |
| reportUniqueWarning(createError( |
| "unable to get the name of the symbol with index " + Twine(SymNdx) + |
| ": st_name (0x" + Twine::utohexstr(Sym.st_name) + |
| ") is past the end of the string table of size 0x" + |
| Twine::utohexstr(Strings.size()))); |
| return "<?>"; |
| } |
| |
| return StrTableOrErr->data() + Sym.st_name; |
| }; |
| |
| std::vector<GroupSection> Ret; |
| uint64_t I = 0; |
| for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { |
| ++I; |
| if (Sec.sh_type != ELF::SHT_GROUP) |
| continue; |
| |
| StringRef Signature = "<?>"; |
| if (Expected<const Elf_Shdr *> SymtabOrErr = Obj.getSection(Sec.sh_link)) { |
| if (Expected<const Elf_Sym *> SymOrErr = |
| Obj.template getEntry<Elf_Sym>(**SymtabOrErr, Sec.sh_info)) |
| Signature = GetSignature(**SymOrErr, Sec.sh_info, **SymtabOrErr); |
| else |
| reportUniqueWarning(createError( |
| "unable to get the signature symbol for " + describe(Obj, Sec) + |
| ": " + toString(SymOrErr.takeError()))); |
| } else { |
| reportUniqueWarning(createError("unable to get the symbol table for " + |
| describe(Obj, Sec) + ": " + |
| toString(SymtabOrErr.takeError()))); |
| } |
| |
| ArrayRef<Elf_Word> Data; |
| if (Expected<ArrayRef<Elf_Word>> ContentsOrErr = |
| Obj.template getSectionContentsAsArray<Elf_Word>(Sec)) { |
| if (ContentsOrErr->empty()) |
| reportUniqueWarning( |
| createError("unable to read the section group flag from the " + |
| describe(Obj, Sec) + ": the section is empty")); |
| else |
| Data = *ContentsOrErr; |
| } else { |
| reportUniqueWarning(createError("unable to get the content of the " + |
| describe(Obj, Sec) + ": " + |
| toString(ContentsOrErr.takeError()))); |
| } |
| |
| Ret.push_back({getPrintableSectionName(Sec), |
| maybeDemangle(Signature), |
| Sec.sh_name, |
| I - 1, |
| Sec.sh_link, |
| Sec.sh_info, |
| Data.empty() ? Elf_Word(0) : Data[0], |
| {}}); |
| |
| if (Data.empty()) |
| continue; |
| |
| std::vector<GroupMember> &GM = Ret.back().Members; |
| for (uint32_t Ndx : Data.slice(1)) { |
| if (Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(Ndx)) { |
| GM.push_back({getPrintableSectionName(**SecOrErr), Ndx}); |
| } else { |
| reportUniqueWarning( |
| createError("unable to get the section with index " + Twine(Ndx) + |
| " when dumping the " + describe(Obj, Sec) + ": " + |
| toString(SecOrErr.takeError()))); |
| GM.push_back({"<?>", Ndx}); |
| } |
| } |
| } |
| return Ret; |
| } |
| |
| static DenseMap<uint64_t, const GroupSection *> |
| mapSectionsToGroups(ArrayRef<GroupSection> Groups) { |
| DenseMap<uint64_t, const GroupSection *> Ret; |
| for (const GroupSection &G : Groups) |
| for (const GroupMember &GM : G.Members) |
| Ret.insert({GM.Index, &G}); |
| return Ret; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printGroupSections() { |
| std::vector<GroupSection> V = this->getGroups(); |
| DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); |
| for (const GroupSection &G : V) { |
| OS << "\n" |
| << getGroupType(G.Type) << " group section [" |
| << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature |
| << "] contains " << G.Members.size() << " sections:\n" |
| << " [Index] Name\n"; |
| for (const GroupMember &GM : G.Members) { |
| const GroupSection *MainGroup = Map[GM.Index]; |
| if (MainGroup != &G) |
| this->reportUniqueWarning( |
| createError("section with index " + Twine(GM.Index) + |
| ", included in the group section with index " + |
| Twine(MainGroup->Index) + |
| ", was also found in the group section with index " + |
| Twine(G.Index))); |
| OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; |
| } |
| } |
| |
| if (V.empty()) |
| OS << "There are no section groups in this file.\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printReloc(const Relocation<ELFT> &R, unsigned RelIndex, |
| const Elf_Shdr &Sec, const Elf_Shdr *SymTab) { |
| Expected<RelSymbol<ELFT>> Target = |
| this->dumper().getRelocationTarget(R, SymTab); |
| if (!Target) |
| this->reportUniqueWarning(createError( |
| "unable to print relocation " + Twine(RelIndex) + " in " + |
| describe(this->Obj, Sec) + ": " + toString(Target.takeError()))); |
| else |
| printRelRelaReloc(R, *Target); |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printRelrReloc(const Elf_Relr &R) { |
| OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) << "\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R, |
| const RelSymbol<ELFT> &RelSym) { |
| // First two fields are bit width dependent. The rest of them are fixed width. |
| unsigned Bias = ELFT::Is64Bits ? 8 : 0; |
| Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; |
| unsigned Width = ELFT::Is64Bits ? 16 : 8; |
| |
| Fields[0].Str = to_string(format_hex_no_prefix(R.Offset, Width)); |
| Fields[1].Str = to_string(format_hex_no_prefix(R.Info, Width)); |
| |
| SmallString<32> RelocName; |
| this->Obj.getRelocationTypeName(R.Type, RelocName); |
| Fields[2].Str = RelocName.c_str(); |
| |
| if (RelSym.Sym) |
| Fields[3].Str = |
| to_string(format_hex_no_prefix(RelSym.Sym->getValue(), Width)); |
| |
| Fields[4].Str = std::string(RelSym.Name); |
| for (const Field &F : Fields) |
| printField(F); |
| |
| std::string Addend; |
| if (Optional<int64_t> A = R.Addend) { |
| int64_t RelAddend = *A; |
| if (!RelSym.Name.empty()) { |
| if (RelAddend < 0) { |
| Addend = " - "; |
| RelAddend = std::abs(RelAddend); |
| } else { |
| Addend = " + "; |
| } |
| } |
| Addend += to_hexString(RelAddend, false); |
| } |
| OS << Addend << "\n"; |
| } |
| |
| template <class ELFT> |
| static void printRelocHeaderFields(formatted_raw_ostream &OS, unsigned SType) { |
| bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA; |
| bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR; |
| if (ELFT::Is64Bits) |
| OS << " "; |
| else |
| OS << " "; |
| if (IsRelr && opts::RawRelr) |
| OS << "Data "; |
| else |
| OS << "Offset"; |
| if (ELFT::Is64Bits) |
| OS << " Info Type" |
| << " Symbol's Value Symbol's Name"; |
| else |
| OS << " Info Type Sym. Value Symbol's Name"; |
| if (IsRela) |
| OS << " + Addend"; |
| OS << "\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printDynamicRelocHeader(unsigned Type, StringRef Name, |
| const DynRegionInfo &Reg) { |
| uint64_t Offset = Reg.Addr - this->Obj.base(); |
| OS << "\n'" << Name.str().c_str() << "' relocation section at offset 0x" |
| << to_hexString(Offset, false) << " contains " << Reg.Size << " bytes:\n"; |
| printRelocHeaderFields<ELFT>(OS, Type); |
| } |
| |
| template <class ELFT> |
| static bool isRelocationSec(const typename ELFT::Shdr &Sec) { |
| return Sec.sh_type == ELF::SHT_REL || Sec.sh_type == ELF::SHT_RELA || |
| Sec.sh_type == ELF::SHT_RELR || Sec.sh_type == ELF::SHT_ANDROID_REL || |
| Sec.sh_type == ELF::SHT_ANDROID_RELA || |
| Sec.sh_type == ELF::SHT_ANDROID_RELR; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printRelocations() { |
| auto GetEntriesNum = [&](const Elf_Shdr &Sec) -> Expected<size_t> { |
| // Android's packed relocation section needs to be unpacked first |
| // to get the actual number of entries. |
| if (Sec.sh_type == ELF::SHT_ANDROID_REL || |
| Sec.sh_type == ELF::SHT_ANDROID_RELA) { |
| Expected<std::vector<typename ELFT::Rela>> RelasOrErr = |
| this->Obj.android_relas(Sec); |
| if (!RelasOrErr) |
| return RelasOrErr.takeError(); |
| return RelasOrErr->size(); |
| } |
| |
| if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR || |
| Sec.sh_type == ELF::SHT_ANDROID_RELR)) { |
| Expected<Elf_Relr_Range> RelrsOrErr = this->Obj.relrs(Sec); |
| if (!RelrsOrErr) |
| return RelrsOrErr.takeError(); |
| return this->Obj.decode_relrs(*RelrsOrErr).size(); |
| } |
| |
| return Sec.getEntityCount(); |
| }; |
| |
| bool HasRelocSections = false; |
| for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { |
| if (!isRelocationSec<ELFT>(Sec)) |
| continue; |
| HasRelocSections = true; |
| |
| std::string EntriesNum = "<?>"; |
| if (Expected<size_t> NumOrErr = GetEntriesNum(Sec)) |
| EntriesNum = std::to_string(*NumOrErr); |
| else |
| this->reportUniqueWarning(createError( |
| "unable to get the number of relocations in " + |
| describe(this->Obj, Sec) + ": " + toString(NumOrErr.takeError()))); |
| |
| uintX_t Offset = Sec.sh_offset; |
| StringRef Name = this->getPrintableSectionName(Sec); |
| OS << "\nRelocation section '" << Name << "' at offset 0x" |
| << to_hexString(Offset, false) << " contains " << EntriesNum |
| << " entries:\n"; |
| printRelocHeaderFields<ELFT>(OS, Sec.sh_type); |
| this->printRelocationsHelper(Sec); |
| } |
| if (!HasRelocSections) |
| OS << "\nThere are no relocations in this file.\n"; |
| } |
| |
| // Print the offset of a particular section from anyone of the ranges: |
| // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER]. |
| // If 'Type' does not fall within any of those ranges, then a string is |
| // returned as '<unknown>' followed by the type value. |
| static std::string getSectionTypeOffsetString(unsigned Type) { |
| if (Type >= SHT_LOOS && Type <= SHT_HIOS) |
| return "LOOS+0x" + to_hexString(Type - SHT_LOOS); |
| else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC) |
| return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC); |
| else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER) |
| return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER); |
| return "0x" + to_hexString(Type) + ": <unknown>"; |
| } |
| |
| static std::string getSectionTypeString(unsigned Machine, unsigned Type) { |
| StringRef Name = getELFSectionTypeName(Machine, Type); |
| |
| // Handle SHT_GNU_* type names. |
| if (Name.startswith("SHT_GNU_")) { |
| if (Name == "SHT_GNU_HASH") |
| return "GNU_HASH"; |
| // E.g. SHT_GNU_verneed -> VERNEED. |
| return Name.drop_front(8).upper(); |
| } |
| |
| if (Name == "SHT_SYMTAB_SHNDX") |
| return "SYMTAB SECTION INDICES"; |
| |
| if (Name.startswith("SHT_")) |
| return Name.drop_front(4).str(); |
| return getSectionTypeOffsetString(Type); |
| } |
| |
| static void printSectionDescription(formatted_raw_ostream &OS, |
| unsigned EMachine) { |
| OS << "Key to Flags:\n"; |
| OS << " W (write), A (alloc), X (execute), M (merge), S (strings), I " |
| "(info),\n"; |
| OS << " L (link order), O (extra OS processing required), G (group), T " |
| "(TLS),\n"; |
| OS << " C (compressed), x (unknown), o (OS specific), E (exclude),\n"; |
| |
| if (EMachine == EM_X86_64) |
| OS << " l (large), "; |
| else if (EMachine == EM_ARM) |
| OS << " y (purecode), "; |
| else |
| OS << " "; |
| |
| OS << "p (processor specific)\n"; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printSectionHeaders() { |
| unsigned Bias = ELFT::Is64Bits ? 0 : 8; |
| ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections()); |
| OS << "There are " << to_string(Sections.size()) |
| << " section headers, starting at offset " |
| << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n"; |
| OS << "Section Headers:\n"; |
| Field Fields[11] = { |
| {"[Nr]", 2}, {"Name", 7}, {"Type", 25}, |
| {"Address", 41}, {"Off", 58 - Bias}, {"Size", 65 - Bias}, |
| {"ES", 72 - Bias}, {"Flg", 75 - Bias}, {"Lk", 79 - Bias}, |
| {"Inf", 82 - Bias}, {"Al", 86 - Bias}}; |
| for (const Field &F : Fields) |
| printField(F); |
| OS << "\n"; |
| |
| StringRef SecStrTable; |
| if (Expected<StringRef> SecStrTableOrErr = this->Obj.getSectionStringTable( |
| Sections, this->dumper().WarningHandler)) |
| SecStrTable = *SecStrTableOrErr; |
| else |
| this->reportUniqueWarning(SecStrTableOrErr.takeError()); |
| |
| size_t SectionIndex = 0; |
| for (const Elf_Shdr &Sec : Sections) { |
| Fields[0].Str = to_string(SectionIndex); |
| if (SecStrTable.empty()) |
| Fields[1].Str = "<no-strings>"; |
| else |
| Fields[1].Str = std::string(unwrapOrError<StringRef>( |
| this->FileName, this->Obj.getSectionName(Sec, SecStrTable))); |
| Fields[2].Str = |
| getSectionTypeString(this->Obj.getHeader().e_machine, Sec.sh_type); |
| Fields[3].Str = |
| to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8)); |
| Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); |
| Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6)); |
| Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); |
| Fields[7].Str = getGNUFlags(this->Obj.getHeader().e_machine, Sec.sh_flags); |
| Fields[8].Str = to_string(Sec.sh_link); |
| Fields[9].Str = to_string(Sec.sh_info); |
| Fields[10].Str = to_string(Sec.sh_addralign); |
| |
| OS.PadToColumn(Fields[0].Column); |
| OS << "[" << right_justify(Fields[0].Str, 2) << "]"; |
| for (int i = 1; i < 7; i++) |
| printField(Fields[i]); |
| OS.PadToColumn(Fields[7].Column); |
| OS << right_justify(Fields[7].Str, 3); |
| OS.PadToColumn(Fields[8].Column); |
| OS << right_justify(Fields[8].Str, 2); |
| OS.PadToColumn(Fields[9].Column); |
| OS << right_justify(Fields[9].Str, 3); |
| OS.PadToColumn(Fields[10].Column); |
| OS << right_justify(Fields[10].Str, 2); |
| OS << "\n"; |
| ++SectionIndex; |
| } |
| printSectionDescription(OS, this->Obj.getHeader().e_machine); |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printSymtabMessage(const Elf_Shdr *Symtab, size_t Entries, |
| bool NonVisibilityBitsUsed) { |
| StringRef Name; |
| if (Symtab) |
| Name = this->getPrintableSectionName(*Symtab); |
| if (!Name.empty()) |
| OS << "\nSymbol table '" << Name << "'"; |
| else |
| OS << "\nSymbol table for image"; |
| OS << " contains " << Entries << " entries:\n"; |
| |
| if (ELFT::Is64Bits) |
| OS << " Num: Value Size Type Bind Vis"; |
| else |
| OS << " Num: Value Size Type Bind Vis"; |
| |
| if (NonVisibilityBitsUsed) |
| OS << " "; |
| OS << " Ndx Name\n"; |
| } |
| |
| template <class ELFT> |
| std::string GNUStyle<ELFT>::getSymbolSectionNdx(const Elf_Sym &Symbol, |
| unsigned SymIndex) { |
| unsigned SectionIndex = Symbol.st_shndx; |
| switch (SectionIndex) { |
| case ELF::SHN_UNDEF: |
| return "UND"; |
| case ELF::SHN_ABS: |
| return "ABS"; |
| case ELF::SHN_COMMON: |
| return "COM"; |
| case ELF::SHN_XINDEX: { |
| Expected<uint32_t> IndexOrErr = object::getExtendedSymbolTableIndex<ELFT>( |
| Symbol, SymIndex, this->dumper().getShndxTable()); |
| if (!IndexOrErr) { |
| assert(Symbol.st_shndx == SHN_XINDEX && |
| "getExtendedSymbolTableIndex should only fail due to an invalid " |
| "SHT_SYMTAB_SHNDX table/reference"); |
| this->reportUniqueWarning(IndexOrErr.takeError()); |
| return "RSV[0xffff]"; |
| } |
| return to_string(format_decimal(*IndexOrErr, 3)); |
| } |
| default: |
| // Find if: |
| // Processor specific |
| if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) |
| return std::string("PRC[0x") + |
| to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; |
| // OS specific |
| if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) |
| return std::string("OS[0x") + |
| to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; |
| // Architecture reserved: |
| if (SectionIndex >= ELF::SHN_LORESERVE && |
| SectionIndex <= ELF::SHN_HIRESERVE) |
| return std::string("RSV[0x") + |
| to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; |
| // A normal section with an index |
| return to_string(format_decimal(SectionIndex, 3)); |
| } |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, bool IsDynamic, |
| bool NonVisibilityBitsUsed) { |
| unsigned Bias = ELFT::Is64Bits ? 8 : 0; |
| Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, |
| 31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias}; |
| Fields[0].Str = to_string(format_decimal(SymIndex, 6)) + ":"; |
| Fields[1].Str = |
| to_string(format_hex_no_prefix(Symbol.st_value, ELFT::Is64Bits ? 16 : 8)); |
| Fields[2].Str = to_string(format_decimal(Symbol.st_size, 5)); |
| |
| unsigned char SymbolType = Symbol.getType(); |
| if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && |
| SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) |
| Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); |
| else |
| Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); |
| |
| Fields[4].Str = |
| printEnum(Symbol.getBinding(), makeArrayRef(ElfSymbolBindings)); |
| Fields[5].Str = |
| printEnum(Symbol.getVisibility(), makeArrayRef(ElfSymbolVisibilities)); |
| if (Symbol.st_other & ~0x3) |
| Fields[5].Str += |
| " [<other: " + to_string(format_hex(Symbol.st_other, 2)) + ">]"; |
| |
| Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0; |
| Fields[6].Str = getSymbolSectionNdx(Symbol, SymIndex); |
| |
| Fields[7].Str = |
| this->dumper().getFullSymbolName(Symbol, SymIndex, StrTable, IsDynamic); |
| for (const Field &Entry : Fields) |
| printField(Entry); |
| OS << "\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printHashedSymbol(const Elf_Sym *Symbol, unsigned SymIndex, |
| StringRef StrTable, uint32_t Bucket) { |
| unsigned Bias = ELFT::Is64Bits ? 8 : 0; |
| Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, |
| 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; |
| Fields[0].Str = to_string(format_decimal(SymIndex, 5)); |
| Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":"; |
| |
| Fields[2].Str = to_string( |
| format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); |
| Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5)); |
| |
| unsigned char SymbolType = Symbol->getType(); |
| if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && |
| SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) |
| Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); |
| else |
| Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); |
| |
| Fields[5].Str = |
| printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); |
| Fields[6].Str = |
| printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities)); |
| Fields[7].Str = getSymbolSectionNdx(*Symbol, SymIndex); |
| Fields[8].Str = |
| this->dumper().getFullSymbolName(*Symbol, SymIndex, StrTable, true); |
| |
| for (const Field &Entry : Fields) |
| printField(Entry); |
| OS << "\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) { |
| if (!PrintSymbols && !PrintDynamicSymbols) |
| return; |
| // GNU readelf prints both the .dynsym and .symtab with --symbols. |
| this->dumper().printSymbolsHelper(true); |
| if (PrintSymbols) |
| this->dumper().printSymbolsHelper(false); |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printHashTableSymbols(const Elf_Hash &SysVHash) { |
| StringRef StringTable = this->dumper().getDynamicStringTable(); |
| if (StringTable.empty()) |
| return; |
| |
| if (ELFT::Is64Bits) |
| OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; |
| else |
| OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; |
| OS << "\n"; |
| |
| Elf_Sym_Range DynSyms = this->dumper().dynamic_symbols(); |
| const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; |
| if (!FirstSym) { |
| Optional<DynRegionInfo> DynSymRegion = this->dumper().getDynSymRegion(); |
| this->reportUniqueWarning( |
| createError(Twine("unable to print symbols for the .hash table: the " |
| "dynamic symbol table ") + |
| (DynSymRegion ? "is empty" : "was not found"))); |
| return; |
| } |
| |
| auto Buckets = SysVHash.buckets(); |
| auto Chains = SysVHash.chains(); |
| for (uint32_t Buc = 0; Buc < SysVHash.nbucket; Buc++) { |
| if (Buckets[Buc] == ELF::STN_UNDEF) |
| continue; |
| std::vector<bool> Visited(SysVHash.nchain); |
| for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash.nchain; Ch = Chains[Ch]) { |
| if (Ch == ELF::STN_UNDEF) |
| break; |
| |
| if (Visited[Ch]) { |
| reportWarning(createError(".hash section is invalid: bucket " + |
| Twine(Ch) + |
| ": a cycle was detected in the linked chain"), |
| this->FileName); |
| break; |
| } |
| |
| printHashedSymbol(FirstSym + Ch, Ch, StringTable, Buc); |
| Visited[Ch] = true; |
| } |
| } |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printGnuHashTableSymbols(const Elf_GnuHash &GnuHash) { |
| StringRef StringTable = this->dumper().getDynamicStringTable(); |
| if (StringTable.empty()) |
| return; |
| |
| Elf_Sym_Range DynSyms = this->dumper().dynamic_symbols(); |
| const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; |
| Optional<DynRegionInfo> DynSymRegion = this->dumper().getDynSymRegion(); |
| if (!FirstSym) { |
| this->reportUniqueWarning(createError( |
| Twine("unable to print symbols for the .gnu.hash table: the " |
| "dynamic symbol table ") + |
| (DynSymRegion ? "is empty" : "was not found"))); |
| return; |
| } |
| |
| auto GetSymbol = [&](uint64_t SymIndex, |
| uint64_t SymsTotal) -> const Elf_Sym * { |
| if (SymIndex >= SymsTotal) { |
| this->reportUniqueWarning(createError( |
| "unable to print hashed symbol with index " + Twine(SymIndex) + |
| ", which is greater than or equal to the number of dynamic symbols " |
| "(" + |
| Twine::utohexstr(SymsTotal) + ")")); |
| return nullptr; |
| } |
| return FirstSym + SymIndex; |
| }; |
| |
| Expected<ArrayRef<Elf_Word>> ValuesOrErr = |
| getGnuHashTableChains<ELFT>(DynSymRegion, &GnuHash); |
| ArrayRef<Elf_Word> Values; |
| if (!ValuesOrErr) |
| this->reportUniqueWarning( |
| createError("unable to get hash values for the SHT_GNU_HASH " |
| "section: " + |
| toString(ValuesOrErr.takeError()))); |
| else |
| Values = *ValuesOrErr; |
| |
| ArrayRef<Elf_Word> Buckets = GnuHash.buckets(); |
| for (uint32_t Buc = 0; Buc < GnuHash.nbuckets; Buc++) { |
| if (Buckets[Buc] == ELF::STN_UNDEF) |
| continue; |
| uint32_t Index = Buckets[Buc]; |
| // Print whole chain. |
| while (true) { |
| uint32_t SymIndex = Index++; |
| if (const Elf_Sym *Sym = GetSymbol(SymIndex, DynSyms.size())) |
| printHashedSymbol(Sym, SymIndex, StringTable, Buc); |
| else |
| break; |
| |
| if (SymIndex < GnuHash.symndx) { |
| this->reportUniqueWarning(createError( |
| "unable to read the hash value for symbol with index " + |
| Twine(SymIndex) + |
| ", which is less than the index of the first hashed symbol (" + |
| Twine(GnuHash.symndx) + ")")); |
| break; |
| } |
| |
| // Chain ends at symbol with stopper bit. |
| if ((Values[SymIndex - GnuHash.symndx] & 1) == 1) |
| break; |
| } |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printHashSymbols() { |
| if (const Elf_Hash *SysVHash = this->dumper().getHashTable()) { |
| OS << "\n Symbol table of .hash for image:\n"; |
| if (Error E = checkHashTable<ELFT>(this->dumper(), SysVHash)) |
| this->reportUniqueWarning(std::move(E)); |
| else |
| printHashTableSymbols(*SysVHash); |
| } |
| |
| // Try printing the .gnu.hash table. |
| if (const Elf_GnuHash *GnuHash = this->dumper().getGnuHashTable()) { |
| OS << "\n Symbol table of .gnu.hash for image:\n"; |
| if (ELFT::Is64Bits) |
| OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; |
| else |
| OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; |
| OS << "\n"; |
| |
| if (Error E = checkGNUHashTable<ELFT>(this->Obj, GnuHash)) |
| this->reportUniqueWarning(std::move(E)); |
| else |
| printGnuHashTableSymbols(*GnuHash); |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printSectionDetails() { |
| ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections()); |
| OS << "There are " << to_string(Sections.size()) |
| << " section headers, starting at offset " |
| << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n"; |
| |
| OS << "Section Headers:\n"; |
| |
| auto PrintFields = [&](ArrayRef<Field> V) { |
| for (const Field &F : V) |
| printField(F); |
| OS << "\n"; |
| }; |
| |
| PrintFields({{"[Nr]", 2}, {"Name", 7}}); |
| |
| constexpr bool Is64 = ELFT::Is64Bits; |
| PrintFields({{"Type", 7}, |
| {Is64 ? "Address" : "Addr", 23}, |
| {"Off", Is64 ? 40 : 32}, |
| {"Size", Is64 ? 47 : 39}, |
| {"ES", Is64 ? 54 : 46}, |
| {"Lk", Is64 ? 59 : 51}, |
| {"Inf", Is64 ? 62 : 54}, |
| {"Al", Is64 ? 66 : 57}}); |
| PrintFields({{"Flags", 7}}); |
| |
| StringRef SecStrTable; |
| if (Expected<StringRef> SecStrTableOrErr = this->Obj.getSectionStringTable( |
| Sections, this->dumper().WarningHandler)) |
| SecStrTable = *SecStrTableOrErr; |
| else |
| this->reportUniqueWarning(SecStrTableOrErr.takeError()); |
| |
| size_t SectionIndex = 0; |
| const unsigned AddrSize = Is64 ? 16 : 8; |
| for (const Elf_Shdr &S : Sections) { |
| StringRef Name = "<?>"; |
| if (Expected<StringRef> NameOrErr = |
| this->Obj.getSectionName(S, SecStrTable)) |
| Name = *NameOrErr; |
| else |
| this->reportUniqueWarning(NameOrErr.takeError()); |
| |
| OS.PadToColumn(2); |
| OS << "[" << right_justify(to_string(SectionIndex), 2) << "]"; |
| PrintFields({{Name, 7}}); |
| PrintFields( |
| {{getSectionTypeString(this->Obj.getHeader().e_machine, S.sh_type), 7}, |
| {to_string(format_hex_no_prefix(S.sh_addr, AddrSize)), 23}, |
| {to_string(format_hex_no_prefix(S.sh_offset, 6)), Is64 ? 39 : 32}, |
| {to_string(format_hex_no_prefix(S.sh_size, 6)), Is64 ? 47 : 39}, |
| {to_string(format_hex_no_prefix(S.sh_entsize, 2)), Is64 ? 54 : 46}, |
| {to_string(S.sh_link), Is64 ? 59 : 51}, |
| {to_string(S.sh_info), Is64 ? 63 : 55}, |
| {to_string(S.sh_addralign), Is64 ? 66 : 58}}); |
| |
| OS.PadToColumn(7); |
| OS << "[" << to_string(format_hex_no_prefix(S.sh_flags, AddrSize)) << "]: "; |
| |
| DenseMap<unsigned, StringRef> FlagToName = { |
| {SHF_WRITE, "WRITE"}, {SHF_ALLOC, "ALLOC"}, |
| {SHF_EXECINSTR, "EXEC"}, {SHF_MERGE, "MERGE"}, |
| {SHF_STRINGS, "STRINGS"}, {SHF_INFO_LINK, "INFO LINK"}, |
| {SHF_LINK_ORDER, "LINK ORDER"}, {SHF_OS_NONCONFORMING, "OS NONCONF"}, |
| {SHF_GROUP, "GROUP"}, {SHF_TLS, "TLS"}, |
| {SHF_COMPRESSED, "COMPRESSED"}, {SHF_EXCLUDE, "EXCLUDE"}}; |
| |
| uint64_t Flags = S.sh_flags; |
| uint64_t UnknownFlags = 0; |
| bool NeedsComma = false; |
| while (Flags) { |
| // Take the least significant bit as a flag. |
| uint64_t Flag = Flags & -Flags; |
| Flags -= Flag; |
| |
| auto It = FlagToName.find(Flag); |
| if (It != FlagToName.end()) { |
| if (NeedsComma) |
| OS << ", "; |
| NeedsComma = true; |
| OS << It->second; |
| } else { |
| UnknownFlags |= Flag; |
| } |
| } |
| |
| auto PrintUnknownFlags = [&](uint64_t Mask, StringRef Name) { |
| uint64_t FlagsToPrint = UnknownFlags & Mask; |
| if (!FlagsToPrint) |
| return; |
| |
| if (NeedsComma) |
| OS << ", "; |
| OS << Name << " (" |
| << to_string(format_hex_no_prefix(FlagsToPrint, AddrSize)) << ")"; |
| UnknownFlags &= ~Mask; |
| NeedsComma = true; |
| }; |
| |
| PrintUnknownFlags(SHF_MASKOS, "OS"); |
| PrintUnknownFlags(SHF_MASKPROC, "PROC"); |
| PrintUnknownFlags(uint64_t(-1), "UNKNOWN"); |
| |
| OS << "\n"; |
| ++SectionIndex; |
| } |
| } |
| |
| static inline std::string printPhdrFlags(unsigned Flag) { |
| std::string Str; |
| Str = (Flag & PF_R) ? "R" : " "; |
| Str += (Flag & PF_W) ? "W" : " "; |
| Str += (Flag & PF_X) ? "E" : " "; |
| return Str; |
| } |
| |
| template <class ELFT> |
| static bool checkTLSSections(const typename ELFT::Phdr &Phdr, |
| const typename ELFT::Shdr &Sec) { |
| if (Sec.sh_flags & ELF::SHF_TLS) { |
| // .tbss must only be shown in the PT_TLS segment. |
| if (Sec.sh_type == ELF::SHT_NOBITS) |
| return Phdr.p_type == ELF::PT_TLS; |
| |
| // SHF_TLS sections are only shown in PT_TLS, PT_LOAD or PT_GNU_RELRO |
| // segments. |
| return (Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || |
| (Phdr.p_type == ELF::PT_GNU_RELRO); |
| } |
| |
| // PT_TLS must only have SHF_TLS sections. |
| return Phdr.p_type != ELF::PT_TLS; |
| } |
| |
| template <class ELFT> |
| static bool checkOffsets(const typename ELFT::Phdr &Phdr, |
| const typename ELFT::Shdr &Sec) { |
| // SHT_NOBITS sections don't need to have an offset inside the segment. |
| if (Sec.sh_type == ELF::SHT_NOBITS) |
| return true; |
| |
| if (Sec.sh_offset < Phdr.p_offset) |
| return false; |
| |
| // Only non-empty sections can be at the end of a segment. |
| if (Sec.sh_size == 0) |
| return (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz); |
| return Sec.sh_offset + Sec.sh_size <= Phdr.p_offset + Phdr.p_filesz; |
| } |
| |
| // Check that an allocatable section belongs to a virtual address |
| // space of a segment. |
| template <class ELFT> |
| static bool checkVMA(const typename ELFT::Phdr &Phdr, |
| const typename ELFT::Shdr &Sec) { |
| if (!(Sec.sh_flags & ELF::SHF_ALLOC)) |
| return true; |
| |
| if (Sec.sh_addr < Phdr.p_vaddr) |
| return false; |
| |
| bool IsTbss = |
| (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); |
| // .tbss is special, it only has memory in PT_TLS and has NOBITS properties. |
| bool IsTbssInNonTLS = IsTbss && Phdr.p_type != ELF::PT_TLS; |
| // Only non-empty sections can be at the end of a segment. |
| if (Sec.sh_size == 0 || IsTbssInNonTLS) |
| return Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz; |
| return Sec.sh_addr + Sec.sh_size <= Phdr.p_vaddr + Phdr.p_memsz; |
| } |
| |
| template <class ELFT> |
| static bool checkPTDynamic(const typename ELFT::Phdr &Phdr, |
| const typename ELFT::Shdr &Sec) { |
| if (Phdr.p_type != ELF::PT_DYNAMIC || Phdr.p_memsz == 0 || Sec.sh_size != 0) |
| return true; |
| |
| // We get here when we have an empty section. Only non-empty sections can be |
| // at the start or at the end of PT_DYNAMIC. |
| // Is section within the phdr both based on offset and VMA? |
| bool CheckOffset = (Sec.sh_type == ELF::SHT_NOBITS) || |
| (Sec.sh_offset > Phdr.p_offset && |
| Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz); |
| bool CheckVA = !(Sec.sh_flags & ELF::SHF_ALLOC) || |
| (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz); |
| return CheckOffset && CheckVA; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printProgramHeaders( |
| bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { |
| if (PrintProgramHeaders) |
| printProgramHeaders(); |
| |
| // Display the section mapping along with the program headers, unless |
| // -section-mapping is explicitly set to false. |
| if (PrintSectionMapping != cl::BOU_FALSE) |
| printSectionMapping(); |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printProgramHeaders() { |
| unsigned Bias = ELFT::Is64Bits ? 8 : 0; |
| const Elf_Ehdr &Header = this->Obj.getHeader(); |
| Field Fields[8] = {2, 17, 26, 37 + Bias, |
| 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; |
| OS << "\nElf file type is " |
| << printEnum(Header.e_type, makeArrayRef(ElfObjectFileType)) << "\n" |
| << "Entry point " << format_hex(Header.e_entry, 3) << "\n" |
| << "There are " << Header.e_phnum << " program headers," |
| << " starting at offset " << Header.e_phoff << "\n\n" |
| << "Program Headers:\n"; |
| if (ELFT::Is64Bits) |
| OS << " Type Offset VirtAddr PhysAddr " |
| << " FileSiz MemSiz Flg Align\n"; |
| else |
| OS << " Type Offset VirtAddr PhysAddr FileSiz " |
| << "MemSiz Flg Align\n"; |
| |
| unsigned Width = ELFT::Is64Bits ? 18 : 10; |
| unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; |
| |
| Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); |
| if (!PhdrsOrErr) { |
| this->reportUniqueWarning(createError("unable to dump program headers: " + |
| toString(PhdrsOrErr.takeError()))); |
| return; |
| } |
| |
| for (const Elf_Phdr &Phdr : *PhdrsOrErr) { |
| Fields[0].Str = getGNUPtType(Header.e_machine, Phdr.p_type); |
| Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8)); |
| Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width)); |
| Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width)); |
| Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth)); |
| Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth)); |
| Fields[6].Str = printPhdrFlags(Phdr.p_flags); |
| Fields[7].Str = to_string(format_hex(Phdr.p_align, 1)); |
| for (const Field &F : Fields) |
| printField(F); |
| if (Phdr.p_type == ELF::PT_INTERP) { |
| OS << "\n"; |
| auto ReportBadInterp = [&](const Twine &Msg) { |
| reportWarning( |
| createError("unable to read program interpreter name at offset 0x" + |
| Twine::utohexstr(Phdr.p_offset) + ": " + Msg), |
| this->FileName); |
| }; |
| |
| if (Phdr.p_offset >= this->Obj.getBufSize()) { |
| ReportBadInterp("it goes past the end of the file (0x" + |
| Twine::utohexstr(this->Obj.getBufSize()) + ")"); |
| continue; |
| } |
| |
| const char *Data = |
| reinterpret_cast<const char *>(this->Obj.base()) + Phdr.p_offset; |
| size_t MaxSize = this->Obj.getBufSize() - Phdr.p_offset; |
| size_t Len = strnlen(Data, MaxSize); |
| if (Len == MaxSize) { |
| ReportBadInterp("it is not null-terminated"); |
| continue; |
| } |
| |
| OS << " [Requesting program interpreter: "; |
| OS << StringRef(Data, Len) << "]"; |
| } |
| OS << "\n"; |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printSectionMapping() { |
| OS << "\n Section to Segment mapping:\n Segment Sections...\n"; |
| DenseSet<const Elf_Shdr *> BelongsToSegment; |
| int Phnum = 0; |
| |
| Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); |
| if (!PhdrsOrErr) { |
| this->reportUniqueWarning(createError( |
| "can't read program headers to build section to segment mapping: " + |
| toString(PhdrsOrErr.takeError()))); |
| return; |
| } |
| |
| for (const Elf_Phdr &Phdr : *PhdrsOrErr) { |
| std::string Sections; |
| OS << format(" %2.2d ", Phnum++); |
| // Check if each section is in a segment and then print mapping. |
| for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { |
| if (Sec.sh_type == ELF::SHT_NULL) |
| continue; |
| |
| // readelf additionally makes sure it does not print zero sized sections |
| // at end of segments and for PT_DYNAMIC both start and end of section |
| // .tbss must only be shown in PT_TLS section. |
| if (checkTLSSections<ELFT>(Phdr, Sec) && checkOffsets<ELFT>(Phdr, Sec) && |
| checkVMA<ELFT>(Phdr, Sec) && checkPTDynamic<ELFT>(Phdr, Sec)) { |
| Sections += |
| unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() + |
| " "; |
| BelongsToSegment.insert(&Sec); |
| } |
| } |
| OS << Sections << "\n"; |
| OS.flush(); |
| } |
| |
| // Display sections that do not belong to a segment. |
| std::string Sections; |
| for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { |
| if (BelongsToSegment.find(&Sec) == BelongsToSegment.end()) |
| Sections += |
| unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() + |
| ' '; |
| } |
| if (!Sections.empty()) { |
| OS << " None " << Sections << '\n'; |
| OS.flush(); |
| } |
| } |
| |
| namespace { |
| |
| template <class ELFT> |
| RelSymbol<ELFT> getSymbolForReloc(const ELFFile<ELFT> &Obj, StringRef FileName, |
| const ELFDumper<ELFT> &Dumper, |
| const Relocation<ELFT> &Reloc) { |
| using Elf_Sym = typename ELFT::Sym; |
| auto WarnAndReturn = [&](const Elf_Sym *Sym, |
| const Twine &Reason) -> RelSymbol<ELFT> { |
| reportWarning( |
| createError("unable to get name of the dynamic symbol with index " + |
| Twine(Reloc.Symbol) + ": " + Reason), |
| FileName); |
| return {Sym, "<corrupt>"}; |
| }; |
| |
| ArrayRef<Elf_Sym> Symbols = Dumper.dynamic_symbols(); |
| const Elf_Sym *FirstSym = Symbols.begin(); |
| if (!FirstSym) |
| return WarnAndReturn(nullptr, "no dynamic symbol table found"); |
| |
| // We might have an object without a section header. In this case the size of |
| // Symbols is zero, because there is no way to know the size of the dynamic |
| // table. We should allow this case and not print a warning. |
| if (!Symbols.empty() && Reloc.Symbol >= Symbols.size()) |
| return WarnAndReturn( |
| nullptr, |
| "index is greater than or equal to the number of dynamic symbols (" + |
| Twine(Symbols.size()) + ")"); |
| |
| const uint64_t FileSize = Obj.getBufSize(); |
| const uint64_t SymOffset = ((const uint8_t *)FirstSym - Obj.base()) + |
| (uint64_t)Reloc.Symbol * sizeof(Elf_Sym); |
| if (SymOffset + sizeof(Elf_Sym) > FileSize) |
| return WarnAndReturn(nullptr, "symbol at 0x" + Twine::utohexstr(SymOffset) + |
| " goes past the end of the file (0x" + |
| Twine::utohexstr(FileSize) + ")"); |
| |
| const Elf_Sym *Sym = FirstSym + Reloc.Symbol; |
| Expected<StringRef> ErrOrName = Sym->getName(Dumper.getDynamicStringTable()); |
| if (!ErrOrName) |
| return WarnAndReturn(Sym, toString(ErrOrName.takeError())); |
| |
| return {Sym == FirstSym ? nullptr : Sym, maybeDemangle(*ErrOrName)}; |
| } |
| } // namespace |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printDynamicReloc(const Relocation<ELFT> &R) { |
| printRelRelaReloc( |
| R, getSymbolForReloc(this->Obj, this->FileName, this->dumper(), R)); |
| } |
| |
| template <class ELFT> |
| static size_t getMaxDynamicTagSize(const ELFFile<ELFT> &Obj, |
| typename ELFT::DynRange Tags) { |
| size_t Max = 0; |
| for (const typename ELFT::Dyn &Dyn : Tags) |
| Max = std::max(Max, Obj.getDynamicTagAsString(Dyn.d_tag).size()); |
| return Max; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printDynamic() { |
| Elf_Dyn_Range Table = this->dumper().dynamic_table(); |
| if (Table.empty()) |
| return; |
| |
| OS << "Dynamic section at offset " |
| << format_hex(reinterpret_cast<const uint8_t *>( |
| this->dumper().getDynamicTableRegion().Addr) - |
| this->Obj.base(), |
| 1) |
| << " contains " << Table.size() << " entries:\n"; |
| |
| // The type name is surrounded with round brackets, hence add 2. |
| size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table) + 2; |
| // The "Name/Value" column should be indented from the "Type" column by N |
| // spaces, where N = MaxTagSize - length of "Type" (4) + trailing |
| // space (1) = 3. |
| OS << " Tag" + std::string(ELFT::Is64Bits ? 16 : 8, ' ') + "Type" |
| << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; |
| |
| std::string ValueFmt = " %-" + std::to_string(MaxTagSize) + "s "; |
| for (auto Entry : Table) { |
| uintX_t Tag = Entry.getTag(); |
| std::string Type = |
| std::string("(") + this->Obj.getDynamicTagAsString(Tag).c_str() + ")"; |
| std::string Value = this->dumper().getDynamicEntry(Tag, Entry.getVal()); |
| OS << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10) |
| << format(ValueFmt.c_str(), Type.c_str()) << Value << "\n"; |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printDynamicRelocations() { |
| this->printDynamicRelocationsHelper(); |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printRelocationsHelper(const Elf_Shdr &Sec) { |
| this->forEachRelocationDo( |
| Sec, opts::RawRelr, |
| [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec, |
| const Elf_Shdr *SymTab) { printReloc(R, Ndx, Sec, SymTab); }, |
| [&](const Elf_Relr &R) { printRelrReloc(R); }); |
| } |
| |
| template <class ELFT> void DumpStyle<ELFT>::printDynamicRelocationsHelper() { |
| const bool IsMips64EL = this->Obj.isMips64EL(); |
| const DynRegionInfo &DynRelaRegion = this->dumper().getDynRelaRegion(); |
| if (DynRelaRegion.Size > 0) { |
| printDynamicRelocHeader(ELF::SHT_RELA, "RELA", DynRelaRegion); |
| for (const Elf_Rela &Rela : this->dumper().dyn_relas()) |
| printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL)); |
| } |
| |
| const DynRegionInfo &DynRelRegion = this->dumper().getDynRelRegion(); |
| if (DynRelRegion.Size > 0) { |
| printDynamicRelocHeader(ELF::SHT_REL, "REL", DynRelRegion); |
| for (const Elf_Rel &Rel : this->dumper().dyn_rels()) |
| printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); |
| } |
| |
| const DynRegionInfo &DynRelrRegion = this->dumper().getDynRelrRegion(); |
| if (DynRelrRegion.Size > 0) { |
| printDynamicRelocHeader(ELF::SHT_REL, "RELR", DynRelrRegion); |
| Elf_Relr_Range Relrs = this->dumper().dyn_relrs(); |
| for (const Elf_Rel &Rel : Obj.decode_relrs(Relrs)) |
| printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); |
| } |
| |
| const DynRegionInfo &DynPLTRelRegion = this->dumper().getDynPLTRelRegion(); |
| if (DynPLTRelRegion.Size) { |
| if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { |
| printDynamicRelocHeader(ELF::SHT_RELA, "PLT", DynPLTRelRegion); |
| for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) |
| printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL)); |
| } else { |
| printDynamicRelocHeader(ELF::SHT_REL, "PLT", DynPLTRelRegion); |
| for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) |
| printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); |
| } |
| } |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printGNUVersionSectionProlog( |
| const typename ELFT::Shdr &Sec, const Twine &Label, unsigned EntriesNum) { |
| // Don't inline the SecName, because it might report a warning to stderr and |
| // corrupt the output. |
| StringRef SecName = this->getPrintableSectionName(Sec); |
| OS << Label << " section '" << SecName << "' " |
| << "contains " << EntriesNum << " entries:\n"; |
| |
| StringRef LinkedSecName = "<corrupt>"; |
| if (Expected<const typename ELFT::Shdr *> LinkedSecOrErr = |
| this->Obj.getSection(Sec.sh_link)) |
| LinkedSecName = this->getPrintableSectionName(**LinkedSecOrErr); |
| else |
| this->reportUniqueWarning( |
| createError("invalid section linked to " + describe(this->Obj, Sec) + |
| ": " + toString(LinkedSecOrErr.takeError()))); |
| |
| OS << " Addr: " << format_hex_no_prefix(Sec.sh_addr, 16) |
| << " Offset: " << format_hex(Sec.sh_offset, 8) |
| << " Link: " << Sec.sh_link << " (" << LinkedSecName << ")\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) { |
| if (!Sec) |
| return; |
| |
| printGNUVersionSectionProlog(*Sec, "Version symbols", |
| Sec->sh_size / sizeof(Elf_Versym)); |
| Expected<ArrayRef<Elf_Versym>> VerTableOrErr = |
| this->dumper().getVersionTable(*Sec, /*SymTab=*/nullptr, |
| /*StrTab=*/nullptr); |
| if (!VerTableOrErr) { |
| this->reportUniqueWarning(VerTableOrErr.takeError()); |
| return; |
| } |
| |
| ArrayRef<Elf_Versym> VerTable = *VerTableOrErr; |
| std::vector<StringRef> Versions; |
| for (size_t I = 0, E = VerTable.size(); I < E; ++I) { |
| unsigned Ndx = VerTable[I].vs_index; |
| if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) { |
| Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*"); |
| continue; |
| } |
| |
| bool IsDefault; |
| Expected<StringRef> NameOrErr = |
| this->dumper().getSymbolVersionByIndex(Ndx, IsDefault); |
| if (!NameOrErr) { |
| this->reportUniqueWarning(createError( |
| "unable to get a version for entry " + Twine(I) + " of " + |
| describe(this->Obj, *Sec) + ": " + toString(NameOrErr.takeError()))); |
| Versions.emplace_back("<corrupt>"); |
| continue; |
| } |
| Versions.emplace_back(*NameOrErr); |
| } |
| |
| // readelf prints 4 entries per line. |
| uint64_t Entries = VerTable.size(); |
| for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) { |
| OS << " " << format_hex_no_prefix(VersymRow, 3) << ":"; |
| for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) { |
| unsigned Ndx = VerTable[VersymRow + I].vs_index; |
| OS << format("%4x%c", Ndx & VERSYM_VERSION, |
| Ndx & VERSYM_HIDDEN ? 'h' : ' '); |
| OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13); |
| } |
| OS << '\n'; |
| } |
| OS << '\n'; |
| } |
| |
| static std::string versionFlagToString(unsigned Flags) { |
| if (Flags == 0) |
| return "none"; |
| |
| std::string Ret; |
| auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) { |
| if (!(Flags & Flag)) |
| return; |
| if (!Ret.empty()) |
| Ret += " | "; |
| Ret += Name; |
| Flags &= ~Flag; |
| }; |
| |
| AddFlag(VER_FLG_BASE, "BASE"); |
| AddFlag(VER_FLG_WEAK, "WEAK"); |
| AddFlag(VER_FLG_INFO, "INFO"); |
| AddFlag(~0, "<unknown>"); |
| return Ret; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) { |
| if (!Sec) |
| return; |
| |
| printGNUVersionSectionProlog(*Sec, "Version definition", Sec->sh_info); |
| |
| Expected<std::vector<VerDef>> V = this->dumper().getVersionDefinitions(*Sec); |
| if (!V) { |
| this->reportUniqueWarning(V.takeError()); |
| return; |
| } |
| |
| for (const VerDef &Def : *V) { |
| OS << format(" 0x%04x: Rev: %u Flags: %s Index: %u Cnt: %u Name: %s\n", |
| Def.Offset, Def.Version, |
| versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt, |
| Def.Name.data()); |
| unsigned I = 0; |
| for (const VerdAux &Aux : Def.AuxV) |
| OS << format(" 0x%04x: Parent %u: %s\n", Aux.Offset, ++I, |
| Aux.Name.data()); |
| } |
| |
| OS << '\n'; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) { |
| if (!Sec) |
| return; |
| |
| unsigned VerneedNum = Sec->sh_info; |
| printGNUVersionSectionProlog(*Sec, "Version needs", VerneedNum); |
| |
| Expected<std::vector<VerNeed>> V = |
| this->dumper().getVersionDependencies(*Sec); |
| if (!V) { |
| this->reportUniqueWarning(V.takeError()); |
| return; |
| } |
| |
| for (const VerNeed &VN : *V) { |
| OS << format(" 0x%04x: Version: %u File: %s Cnt: %u\n", VN.Offset, |
| VN.Version, VN.File.data(), VN.Cnt); |
| for (const VernAux &Aux : VN.AuxV) |
| OS << format(" 0x%04x: Name: %s Flags: %s Version: %u\n", Aux.Offset, |
| Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(), |
| Aux.Other); |
| } |
| OS << '\n'; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printHashHistogram(const Elf_Hash &HashTable) { |
| size_t NBucket = HashTable.nbucket; |
| size_t NChain = HashTable.nchain; |
| ArrayRef<Elf_Word> Buckets = HashTable.buckets(); |
| ArrayRef<Elf_Word> Chains = HashTable.chains(); |
| size_t TotalSyms = 0; |
| // If hash table is correct, we have at least chains with 0 length |
| size_t MaxChain = 1; |
| size_t CumulativeNonZero = 0; |
| |
| if (NChain == 0 || NBucket == 0) |
| return; |
| |
| std::vector<size_t> ChainLen(NBucket, 0); |
| // Go over all buckets and and note chain lengths of each bucket (total |
| // unique chain lengths). |
| for (size_t B = 0; B < NBucket; B++) { |
| std::vector<bool> Visited(NChain); |
| for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) { |
| if (C == ELF::STN_UNDEF) |
| break; |
| if (Visited[C]) { |
| reportWarning(createError(".hash section is invalid: bucket " + |
| Twine(C) + |
| ": a cycle was detected in the linked chain"), |
| this->FileName); |
| break; |
| } |
| Visited[C] = true; |
| if (MaxChain <= ++ChainLen[B]) |
| MaxChain++; |
| } |
| TotalSyms += ChainLen[B]; |
| } |
| |
| if (!TotalSyms) |
| return; |
| |
| std::vector<size_t> Count(MaxChain, 0); |
| // Count how long is the chain for each bucket |
| for (size_t B = 0; B < NBucket; B++) |
| ++Count[ChainLen[B]]; |
| // Print Number of buckets with each chain lengths and their cumulative |
| // coverage of the symbols |
| OS << "Histogram for bucket list length (total of " << NBucket |
| << " buckets)\n" |
| << " Length Number % of total Coverage\n"; |
| for (size_t I = 0; I < MaxChain; I++) { |
| CumulativeNonZero += Count[I] * I; |
| OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], |
| (Count[I] * 100.0) / NBucket, |
| (CumulativeNonZero * 100.0) / TotalSyms); |
| } |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printGnuHashHistogram(const Elf_GnuHash &GnuHashTable) { |
| Expected<ArrayRef<Elf_Word>> ChainsOrErr = getGnuHashTableChains<ELFT>( |
| this->dumper().getDynSymRegion(), &GnuHashTable); |
| if (!ChainsOrErr) { |
| this->reportUniqueWarning( |
| createError("unable to print the GNU hash table histogram: " + |
| toString(ChainsOrErr.takeError()))); |
| return; |
| } |
| |
| ArrayRef<Elf_Word> Chains = *ChainsOrErr; |
| size_t Symndx = GnuHashTable.symndx; |
| size_t TotalSyms = 0; |
| size_t MaxChain = 1; |
| size_t CumulativeNonZero = 0; |
| |
| size_t NBucket = GnuHashTable.nbuckets; |
| if (Chains.empty() || NBucket == 0) |
| return; |
| |
| ArrayRef<Elf_Word> Buckets = GnuHashTable.buckets(); |
| std::vector<size_t> ChainLen(NBucket, 0); |
| for (size_t B = 0; B < NBucket; B++) { |
| if (!Buckets[B]) |
| continue; |
| size_t Len = 1; |
| for (size_t C = Buckets[B] - Symndx; |
| C < Chains.size() && (Chains[C] & 1) == 0; C++) |
| if (MaxChain < ++Len) |
| MaxChain++; |
| ChainLen[B] = Len; |
| TotalSyms += Len; |
| } |
| MaxChain++; |
| |
| if (!TotalSyms) |
| return; |
| |
| std::vector<size_t> Count(MaxChain, 0); |
| for (size_t B = 0; B < NBucket; B++) |
| ++Count[ChainLen[B]]; |
| // Print Number of buckets with each chain lengths and their cumulative |
| // coverage of the symbols |
| OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket |
| << " buckets)\n" |
| << " Length Number % of total Coverage\n"; |
| for (size_t I = 0; I < MaxChain; I++) { |
| CumulativeNonZero += Count[I] * I; |
| OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], |
| (Count[I] * 100.0) / NBucket, |
| (CumulativeNonZero * 100.0) / TotalSyms); |
| } |
| } |
| |
| // Hash histogram shows statistics of how efficient the hash was for the |
| // dynamic symbol table. The table shows the number of hash buckets for |
| // different lengths of chains as an absolute number and percentage of the total |
| // buckets, and the cumulative coverage of symbols for each set of buckets. |
| template <class ELFT> void GNUStyle<ELFT>::printHashHistograms() { |
| // Print histogram for the .hash section. |
| if (const Elf_Hash *HashTable = this->dumper().getHashTable()) { |
| if (Error E = checkHashTable<ELFT>(this->dumper(), HashTable)) |
| this->reportUniqueWarning(std::move(E)); |
| else |
| printHashHistogram(*HashTable); |
| } |
| |
| // Print histogram for the .gnu.hash section. |
| if (const Elf_GnuHash *GnuHashTable = this->dumper().getGnuHashTable()) { |
| if (Error E = checkGNUHashTable<ELFT>(this->Obj, GnuHashTable)) |
| this->reportUniqueWarning(std::move(E)); |
| else |
| printGnuHashHistogram(*GnuHashTable); |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printCGProfile() { |
| OS << "GNUStyle::printCGProfile not implemented\n"; |
| } |
| |
| static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) { |
| std::vector<uint64_t> Ret; |
| const uint8_t *Cur = Data.begin(); |
| const uint8_t *End = Data.end(); |
| while (Cur != End) { |
| unsigned Size; |
| const char *Err; |
| Ret.push_back(decodeULEB128(Cur, &Size, End, &Err)); |
| if (Err) |
| return createError(Err); |
| Cur += Size; |
| } |
| return Ret; |
| } |
| |
| template <class ELFT> |
| static Expected<std::vector<uint64_t>> |
| decodeAddrsigSection(const ELFFile<ELFT> &Obj, const typename ELFT::Shdr &Sec) { |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Sec); |
| if (!ContentsOrErr) |
| return ContentsOrErr.takeError(); |
| |
| if (Expected<std::vector<uint64_t>> SymsOrErr = |
| toULEB128Array(*ContentsOrErr)) |
| return *SymsOrErr; |
| else |
| return createError("unable to decode " + describe(Obj, Sec) + ": " + |
| toString(SymsOrErr.takeError())); |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printAddrsig() { |
| const Elf_Shdr *Sec = this->dumper().getDotAddrsigSec(); |
| if (!Sec) |
| return; |
| |
| Expected<std::vector<uint64_t>> SymsOrErr = |
| decodeAddrsigSection(this->Obj, *Sec); |
| if (!SymsOrErr) { |
| this->reportUniqueWarning(SymsOrErr.takeError()); |
| return; |
| } |
| |
| StringRef Name = this->getPrintableSectionName(*Sec); |
| OS << "\nAddress-significant symbols section '" << Name << "'" |
| << " contains " << SymsOrErr->size() << " entries:\n"; |
| OS << " Num: Name\n"; |
| |
| Field Fields[2] = {0, 8}; |
| size_t SymIndex = 0; |
| for (uint64_t Sym : *SymsOrErr) { |
| Fields[0].Str = to_string(format_decimal(++SymIndex, 6)) + ":"; |
| Fields[1].Str = this->dumper().getStaticSymbolName(Sym); |
| for (const Field &Entry : Fields) |
| printField(Entry); |
| OS << "\n"; |
| } |
| } |
| |
| template <typename ELFT> |
| static std::string getGNUProperty(uint32_t Type, uint32_t DataSize, |
| ArrayRef<uint8_t> Data) { |
| std::string str; |
| raw_string_ostream OS(str); |
| uint32_t PrData; |
| auto DumpBit = [&](uint32_t Flag, StringRef Name) { |
| if (PrData & Flag) { |
| PrData &= ~Flag; |
| OS << Name; |
| if (PrData) |
| OS << ", "; |
| } |
| }; |
| |
| switch (Type) { |
| default: |
| OS << format("<application-specific type 0x%x>", Type); |
| return OS.str(); |
| case GNU_PROPERTY_STACK_SIZE: { |
| OS << "stack size: "; |
| if (DataSize == sizeof(typename ELFT::uint)) |
| OS << formatv("{0:x}", |
| (uint64_t)(*(const typename ELFT::Addr *)Data.data())); |
| else |
| OS << format("<corrupt length: 0x%x>", DataSize); |
| return OS.str(); |
| } |
| case GNU_PROPERTY_NO_COPY_ON_PROTECTED: |
| OS << "no copy on protected"; |
| if (DataSize) |
| OS << format(" <corrupt length: 0x%x>", DataSize); |
| return OS.str(); |
| case GNU_PROPERTY_AARCH64_FEATURE_1_AND: |
| case GNU_PROPERTY_X86_FEATURE_1_AND: |
| OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: " |
| : "x86 feature: "); |
| if (DataSize != 4) { |
| OS << format("<corrupt length: 0x%x>", DataSize); |
| return OS.str(); |
| } |
| PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); |
| if (PrData == 0) { |
| OS << "<None>"; |
| return OS.str(); |
| } |
| if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) { |
| DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI"); |
| DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC"); |
| } else { |
| DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK"); |
| } |
| if (PrData) |
| OS << format("<unknown flags: 0x%x>", PrData); |
| return OS.str(); |
| case GNU_PROPERTY_X86_ISA_1_NEEDED: |
| case GNU_PROPERTY_X86_ISA_1_USED: |
| OS << "x86 ISA " |
| << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: "); |
| if (DataSize != 4) { |
| OS << format("<corrupt length: 0x%x>", DataSize); |
| return OS.str(); |
| } |
| PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); |
| if (PrData == 0) { |
| OS << "<None>"; |
| return OS.str(); |
| } |
| DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2"); |
| DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI"); |
| if (PrData) |
| OS << format("<unknown flags: 0x%x>", PrData); |
| return OS.str(); |
| break; |
| case GNU_PROPERTY_X86_FEATURE_2_NEEDED: |
| case GNU_PROPERTY_X86_FEATURE_2_USED: |
| OS << "x86 feature " |
| << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: "); |
| if (DataSize != 4) { |
| OS << format("<corrupt length: 0x%x>", DataSize); |
| return OS.str(); |
| } |
| PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); |
| if (PrData == 0) { |
| OS << "<None>"; |
| return OS.str(); |
| } |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT"); |
| DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC"); |
| if (PrData) |
| OS << format("<unknown flags: 0x%x>", PrData); |
| return OS.str(); |
| } |
| } |
| |
| template <typename ELFT> |
| static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) { |
| using Elf_Word = typename ELFT::Word; |
| |
| SmallVector<std::string, 4> Properties; |
| while (Arr.size() >= 8) { |
| uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); |
| uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); |
| Arr = Arr.drop_front(8); |
| |
| // Take padding size into account if present. |
| uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); |
| std::string str; |
| raw_string_ostream OS(str); |
| if (Arr.size() < PaddedSize) { |
| OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize); |
| Properties.push_back(OS.str()); |
| break; |
| } |
| Properties.push_back( |
| getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize))); |
| Arr = Arr.drop_front(PaddedSize); |
| } |
| |
| if (!Arr.empty()) |
| Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>"); |
| |
| return Properties; |
| } |
| |
| struct GNUAbiTag { |
| std::string OSName; |
| std::string ABI; |
| bool IsValid; |
| }; |
| |
| template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) { |
| typedef typename ELFT::Word Elf_Word; |
| |
| ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()), |
| reinterpret_cast<const Elf_Word *>(Desc.end())); |
| |
| if (Words.size() < 4) |
| return {"", "", /*IsValid=*/false}; |
| |
| static const char *OSNames[] = { |
| "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", |
| }; |
| StringRef OSName = "Unknown"; |
| if (Words[0] < array_lengthof(OSNames)) |
| OSName = OSNames[Words[0]]; |
| uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; |
| std::string str; |
| raw_string_ostream ABI(str); |
| ABI << Major << "." << Minor << "." << Patch; |
| return {std::string(OSName), ABI.str(), /*IsValid=*/true}; |
| } |
| |
| static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) { |
| std::string str; |
| raw_string_ostream OS(str); |
| for (uint8_t B : Desc) |
| OS << format_hex_no_prefix(B, 2); |
| return OS.str(); |
| } |
| |
| static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) { |
| return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); |
| } |
| |
| template <typename ELFT> |
| static void printGNUNote(raw_ostream &OS, uint32_t NoteType, |
| ArrayRef<uint8_t> Desc) { |
| switch (NoteType) { |
| default: |
| return; |
| case ELF::NT_GNU_ABI_TAG: { |
| const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); |
| if (!AbiTag.IsValid) |
| OS << " <corrupt GNU_ABI_TAG>"; |
| else |
| OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI; |
| break; |
| } |
| case ELF::NT_GNU_BUILD_ID: { |
| OS << " Build ID: " << getGNUBuildId(Desc); |
| break; |
| } |
| case ELF::NT_GNU_GOLD_VERSION: |
| OS << " Version: " << getGNUGoldVersion(Desc); |
| break; |
| case ELF::NT_GNU_PROPERTY_TYPE_0: |
| OS << " Properties:"; |
| for (const std::string &Property : getGNUPropertyList<ELFT>(Desc)) |
| OS << " " << Property << "\n"; |
| break; |
| } |
| OS << '\n'; |
| } |
| |
| struct AMDNote { |
| std::string Type; |
| std::string Value; |
| }; |
| |
| template <typename ELFT> |
| static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { |
| switch (NoteType) { |
| default: |
| return {"", ""}; |
| case ELF::NT_AMD_AMDGPU_HSA_METADATA: |
| return { |
| "HSA Metadata", |
| std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; |
| case ELF::NT_AMD_AMDGPU_ISA: |
| return { |
| "ISA Version", |
| std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; |
| } |
| } |
| |
| struct AMDGPUNote { |
| std::string Type; |
| std::string Value; |
| }; |
| |
| template <typename ELFT> |
| static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { |
| switch (NoteType) { |
| default: |
| return {"", ""}; |
| case ELF::NT_AMDGPU_METADATA: { |
| StringRef MsgPackString = |
| StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); |
| msgpack::Document MsgPackDoc; |
| if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false)) |
| return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"}; |
| |
| AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true); |
| std::string HSAMetadataString; |
| if (!Verifier.verify(MsgPackDoc.getRoot())) |
| HSAMetadataString = "Invalid AMDGPU Metadata\n"; |
| |
| raw_string_ostream StrOS(HSAMetadataString); |
| MsgPackDoc.toYAML(StrOS); |
| |
| return {"AMDGPU Metadata", StrOS.str()}; |
| } |
| } |
| } |
| |
| struct CoreFileMapping { |
| uint64_t Start, End, Offset; |
| StringRef Filename; |
| }; |
| |
| struct CoreNote { |
| uint64_t PageSize; |
| std::vector<CoreFileMapping> Mappings; |
| }; |
| |
| static Expected<CoreNote> readCoreNote(DataExtractor Desc) { |
| // Expected format of the NT_FILE note description: |
| // 1. # of file mappings (call it N) |
| // 2. Page size |
| // 3. N (start, end, offset) triples |
| // 4. N packed filenames (null delimited) |
| // Each field is an Elf_Addr, except for filenames which are char* strings. |
| |
| CoreNote Ret; |
| const int Bytes = Desc.getAddressSize(); |
| |
| if (!Desc.isValidOffsetForAddress(2)) |
| return createStringError(object_error::parse_failed, |
| "malformed note: header too short"); |
| if (Desc.getData().back() != 0) |
| return createStringError(object_error::parse_failed, |
| "malformed note: not NUL terminated"); |
| |
| uint64_t DescOffset = 0; |
| uint64_t FileCount = Desc.getAddress(&DescOffset); |
| Ret.PageSize = Desc.getAddress(&DescOffset); |
| |
| if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes)) |
| return createStringError(object_error::parse_failed, |
| "malformed note: too short for number of files"); |
| |
| uint64_t FilenamesOffset = 0; |
| DataExtractor Filenames( |
| Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes), |
| Desc.isLittleEndian(), Desc.getAddressSize()); |
| |
| Ret.Mappings.resize(FileCount); |
| for (CoreFileMapping &Mapping : Ret.Mappings) { |
| if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1)) |
| return createStringError(object_error::parse_failed, |
| "malformed note: too few filenames"); |
| Mapping.Start = Desc.getAddress(&DescOffset); |
| Mapping.End = Desc.getAddress(&DescOffset); |
| Mapping.Offset = Desc.getAddress(&DescOffset); |
| Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset); |
| } |
| |
| return Ret; |
| } |
| |
| template <typename ELFT> |
| static void printCoreNote(raw_ostream &OS, const CoreNote &Note) { |
| // Length of "0x<address>" string. |
| const int FieldWidth = ELFT::Is64Bits ? 18 : 10; |
| |
| OS << " Page size: " << format_decimal(Note.PageSize, 0) << '\n'; |
| OS << " " << right_justify("Start", FieldWidth) << " " |
| << right_justify("End", FieldWidth) << " " |
| << right_justify("Page Offset", FieldWidth) << '\n'; |
| for (const CoreFileMapping &Mapping : Note.Mappings) { |
| OS << " " << format_hex(Mapping.Start, FieldWidth) << " " |
| << format_hex(Mapping.End, FieldWidth) << " " |
| << format_hex(Mapping.Offset, FieldWidth) << "\n " |
| << Mapping.Filename << '\n'; |
| } |
| } |
| |
| static const NoteType GenericNoteTypes[] = { |
| {ELF::NT_VERSION, "NT_VERSION (version)"}, |
| {ELF::NT_ARCH, "NT_ARCH (architecture)"}, |
| {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"}, |
| {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"}, |
| }; |
| |
| static const NoteType GNUNoteTypes[] = { |
| {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, |
| {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, |
| {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, |
| {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, |
| {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, |
| }; |
| |
| static const NoteType FreeBSDNoteTypes[] = { |
| {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, |
| "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, |
| {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, |
| }; |
| |
| static const NoteType AMDNoteTypes[] = { |
| {ELF::NT_AMD_AMDGPU_HSA_METADATA, |
| "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, |
| {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"}, |
| {ELF::NT_AMD_AMDGPU_PAL_METADATA, |
| "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}, |
| }; |
| |
| static const NoteType AMDGPUNoteTypes[] = { |
| {ELF::NT_AMDGPU_METADATA, "NT_AMDGPU_METADATA (AMDGPU Metadata)"}, |
| }; |
| |
| static const NoteType CoreNoteTypes[] = { |
| {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"}, |
| {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"}, |
| {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"}, |
| {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"}, |
| {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"}, |
| {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"}, |
| {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"}, |
| {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"}, |
| {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"}, |
| {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"}, |
| {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"}, |
| |
| {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"}, |
| {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"}, |
| {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"}, |
| {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"}, |
| {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"}, |
| {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"}, |
| {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"}, |
| {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"}, |
| {ELF::NT_PPC_TM_CFPR, |
| "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"}, |
| {ELF::NT_PPC_TM_CVMX, |
| "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"}, |
| {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"}, |
| {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"}, |
| {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"}, |
| {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"}, |
| {ELF::NT_PPC_TM_CDSCR, "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"}, |
| |
| {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"}, |
| {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"}, |
| {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"}, |
| |
| {ELF::NT_S390_HIGH_GPRS, "NT_S390_HIGH_GPRS (s390 upper register halves)"}, |
| {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"}, |
| {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"}, |
| {ELF::NT_S390_TODPREG, "NT_S390_TODPREG (s390 TOD programmable register)"}, |
| {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"}, |
| {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"}, |
| {ELF::NT_S390_LAST_BREAK, |
| "NT_S390_LAST_BREAK (s390 last breaking event address)"}, |
| {ELF::NT_S390_SYSTEM_CALL, |
| "NT_S390_SYSTEM_CALL (s390 system call restart data)"}, |
| {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"}, |
| {ELF::NT_S390_VXRS_LOW, |
| "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"}, |
| {ELF::NT_S390_VXRS_HIGH, "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"}, |
| {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"}, |
| {ELF::NT_S390_GS_BC, |
| "NT_S390_GS_BC (s390 guarded-storage broadcast control)"}, |
| |
| {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"}, |
| {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"}, |
| {ELF::NT_ARM_HW_BREAK, |
| "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"}, |
| {ELF::NT_ARM_HW_WATCH, |
| "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"}, |
| |
| {ELF::NT_FILE, "NT_FILE (mapped files)"}, |
| {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"}, |
| {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"}, |
| }; |
| |
| template <class ELFT> |
| const StringRef getNoteTypeName(const typename ELFT::Note &Note, |
| unsigned ELFType) { |
| uint32_t Type = Note.getType(); |
| auto FindNote = [&](ArrayRef<NoteType> V) -> StringRef { |
| for (const NoteType &N : V) |
| if (N.ID == Type) |
| return N.Name; |
| return ""; |
| }; |
| |
| StringRef Name = Note.getName(); |
| if (Name == "GNU") |
| return FindNote(GNUNoteTypes); |
| if (Name == "FreeBSD") |
| return FindNote(FreeBSDNoteTypes); |
| if (Name == "AMD") |
| return FindNote(AMDNoteTypes); |
| if (Name == "AMDGPU") |
| return FindNote(AMDGPUNoteTypes); |
| |
| if (ELFType == ELF::ET_CORE) |
| return FindNote(CoreNoteTypes); |
| return FindNote(GenericNoteTypes); |
| } |
| |
| template <class ELFT> |
| static void printNotesHelper( |
| const ELFDumper<ELFT> &Dumper, |
| llvm::function_ref<void(Optional<StringRef>, typename ELFT::Off, |
| typename ELFT::Addr)> |
| StartNotesFn, |
| llvm::function_ref<void(const typename ELFT::Note &)> ProcessNoteFn, |
| llvm::function_ref<void()> FinishNotesFn) { |
| const ELFFile<ELFT> &Obj = *Dumper.getElfObject().getELFFile(); |
| |
| ArrayRef<typename ELFT::Shdr> Sections = cantFail(Obj.sections()); |
| if (Obj.getHeader().e_type != ELF::ET_CORE && !Sections.empty()) { |
| for (const typename ELFT::Shdr &S : Sections) { |
| if (S.sh_type != SHT_NOTE) |
| continue; |
| StartNotesFn(expectedToOptional(Obj.getSectionName(S)), S.sh_offset, |
| S.sh_size); |
| Error Err = Error::success(); |
| for (const typename ELFT::Note &Note : Obj.notes(S, Err)) |
| ProcessNoteFn(Note); |
| if (Err) |
| Dumper.reportUniqueWarning( |
| createError("unable to read notes from the " + describe(Obj, S) + |
| ": " + toString(std::move(Err)))); |
| FinishNotesFn(); |
| } |
| return; |
| } |
| |
| Expected<ArrayRef<typename ELFT::Phdr>> PhdrsOrErr = Obj.program_headers(); |
| if (!PhdrsOrErr) { |
| Dumper.reportUniqueWarning(createError( |
| "unable to read program headers to locate the PT_NOTE segment: " + |
| toString(PhdrsOrErr.takeError()))); |
| return; |
| } |
| |
| size_t I = 0; |
| for (const typename ELFT::Phdr &P : *PhdrsOrErr) { |
| ++I; |
| if (P.p_type != PT_NOTE) |
| continue; |
| StartNotesFn(/*SecName=*/None, P.p_offset, P.p_filesz); |
| Error Err = Error::success(); |
| for (const typename ELFT::Note Note : Obj.notes(P, Err)) |
| ProcessNoteFn(Note); |
| if (Err) |
| Dumper.reportUniqueWarning(createError( |
| "unable to read notes from the PT_NOTE segment with index " + |
| Twine(I) + ": " + toString(std::move(Err)))); |
| FinishNotesFn(); |
| } |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printNotes() { |
| auto PrintHeader = [&](Optional<StringRef> SecName, |
| const typename ELFT::Off Offset, |
| const typename ELFT::Addr Size) { |
| OS << "Displaying notes found "; |
| |
| if (SecName) |
| OS << "in: " << *SecName << "\n"; |
| else |
| OS << "at file offset " << format_hex(Offset, 10) << " with length " |
| << format_hex(Size, 10) << ":\n"; |
| |
| OS << " Owner Data size \tDescription\n"; |
| }; |
| |
| auto ProcessNote = [&](const Elf_Note &Note) { |
| StringRef Name = Note.getName(); |
| ArrayRef<uint8_t> Descriptor = Note.getDesc(); |
| Elf_Word Type = Note.getType(); |
| |
| // Print the note owner/type. |
| OS << " " << left_justify(Name, 20) << ' ' |
| << format_hex(Descriptor.size(), 10) << '\t'; |
| |
| StringRef NoteType = |
| getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type); |
| if (!NoteType.empty()) |
| OS << NoteType << '\n'; |
| else |
| OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n"; |
| |
| // Print the description, or fallback to printing raw bytes for unknown |
| // owners. |
| if (Name == "GNU") { |
| printGNUNote<ELFT>(OS, Type, Descriptor); |
| } else if (Name == "AMD") { |
| const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); |
| if (!N.Type.empty()) |
| OS << " " << N.Type << ":\n " << N.Value << '\n'; |
| } else if (Name == "AMDGPU") { |
| const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); |
| if (!N.Type.empty()) |
| OS << " " << N.Type << ":\n " << N.Value << '\n'; |
| } else if (Name == "CORE") { |
| if (Type == ELF::NT_FILE) { |
| DataExtractor DescExtractor(Descriptor, |
| ELFT::TargetEndianness == support::little, |
| sizeof(Elf_Addr)); |
| Expected<CoreNote> Note = readCoreNote(DescExtractor); |
| if (Note) |
| printCoreNote<ELFT>(OS, *Note); |
| else |
| reportWarning(Note.takeError(), this->FileName); |
| } |
| } else if (!Descriptor.empty()) { |
| OS << " description data:"; |
| for (uint8_t B : Descriptor) |
| OS << " " << format("%02x", B); |
| OS << '\n'; |
| } |
| }; |
| |
| printNotesHelper(this->dumper(), PrintHeader, ProcessNote, []() {}); |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printELFLinkerOptions() { |
| OS << "printELFLinkerOptions not implemented!\n"; |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printDependentLibsHelper( |
| function_ref<void(const Elf_Shdr &)> OnSectionStart, |
| function_ref<void(StringRef, uint64_t)> OnLibEntry) { |
| auto Warn = [this](unsigned SecNdx, StringRef Msg) { |
| this->reportUniqueWarning( |
| createError("SHT_LLVM_DEPENDENT_LIBRARIES section at index " + |
| Twine(SecNdx) + " is broken: " + Msg)); |
| }; |
| |
| unsigned I = -1; |
| for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) { |
| ++I; |
| if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES) |
| continue; |
| |
| OnSectionStart(Shdr); |
| |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Shdr); |
| if (!ContentsOrErr) { |
| Warn(I, toString(ContentsOrErr.takeError())); |
| continue; |
| } |
| |
| ArrayRef<uint8_t> Contents = *ContentsOrErr; |
| if (!Contents.empty() && Contents.back() != 0) { |
| Warn(I, "the content is not null-terminated"); |
| continue; |
| } |
| |
| for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) { |
| StringRef Lib((const char *)I); |
| OnLibEntry(Lib, I - Contents.begin()); |
| I += Lib.size() + 1; |
| } |
| } |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::forEachRelocationDo( |
| const Elf_Shdr &Sec, bool RawRelr, |
| llvm::function_ref<void(const Relocation<ELFT> &, unsigned, |
| const Elf_Shdr &, const Elf_Shdr *)> |
| RelRelaFn, |
| llvm::function_ref<void(const Elf_Relr &)> RelrFn) { |
| auto Warn = [&](Error &&E, |
| const Twine &Prefix = "unable to read relocations from") { |
| this->reportUniqueWarning(createError(Prefix + " " + describe(Obj, Sec) + |
| ": " + toString(std::move(E)))); |
| }; |
| |
| // SHT_RELR/SHT_ANDROID_RELR sections do not have an associated symbol table. |
| // For them we should not treat the value of the sh_link field as an index of |
| // a symbol table. |
| const Elf_Shdr *SymTab; |
| if (Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_RELR) { |
| Expected<const Elf_Shdr *> SymTabOrErr = Obj.getSection(Sec.sh_link); |
| if (!SymTabOrErr) { |
| Warn(SymTabOrErr.takeError(), "unable to locate a symbol table for"); |
| return; |
| } |
| SymTab = *SymTabOrErr; |
| } |
| |
| unsigned RelNdx = 0; |
| const bool IsMips64EL = this->Obj.isMips64EL(); |
| switch (Sec.sh_type) { |
| case ELF::SHT_REL: |
| if (Expected<Elf_Rel_Range> RangeOrErr = Obj.rels(Sec)) { |
| for (const Elf_Rel &R : *RangeOrErr) |
| RelRelaFn(Relocation<ELFT>(R, IsMips64EL), ++RelNdx, Sec, SymTab); |
| } else { |
| Warn(RangeOrErr.takeError()); |
| } |
| break; |
| case ELF::SHT_RELA: |
| if (Expected<Elf_Rela_Range> RangeOrErr = Obj.relas(Sec)) { |
| for (const Elf_Rela &R : *RangeOrErr) |
| RelRelaFn(Relocation<ELFT>(R, IsMips64EL), ++RelNdx, Sec, SymTab); |
| } else { |
| Warn(RangeOrErr.takeError()); |
| } |
| break; |
| case ELF::SHT_RELR: |
| case ELF::SHT_ANDROID_RELR: { |
| Expected<Elf_Relr_Range> RangeOrErr = Obj.relrs(Sec); |
| if (!RangeOrErr) { |
| Warn(RangeOrErr.takeError()); |
| break; |
| } |
| if (RawRelr) { |
| for (const Elf_Relr &R : *RangeOrErr) |
| RelrFn(R); |
| break; |
| } |
| |
| for (const Elf_Rel &R : Obj.decode_relrs(*RangeOrErr)) |
| RelRelaFn(Relocation<ELFT>(R, IsMips64EL), ++RelNdx, Sec, |
| /*SymTab=*/nullptr); |
| break; |
| } |
| case ELF::SHT_ANDROID_REL: |
| case ELF::SHT_ANDROID_RELA: |
| if (Expected<std::vector<Elf_Rela>> RelasOrErr = Obj.android_relas(Sec)) { |
| for (const Elf_Rela &R : *RelasOrErr) |
| RelRelaFn(Relocation<ELFT>(R, IsMips64EL), ++RelNdx, Sec, SymTab); |
| } else { |
| Warn(RelasOrErr.takeError()); |
| } |
| break; |
| } |
| } |
| |
| template <class ELFT> |
| StringRef DumpStyle<ELFT>::getPrintableSectionName(const Elf_Shdr &Sec) const { |
| StringRef Name = "<?>"; |
| if (Expected<StringRef> SecNameOrErr = |
| Obj.getSectionName(Sec, this->dumper().WarningHandler)) |
| Name = *SecNameOrErr; |
| else |
| this->reportUniqueWarning(createError("unable to get the name of " + |
| describe(Obj, Sec) + ": " + |
| toString(SecNameOrErr.takeError()))); |
| return Name; |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printDependentLibs() { |
| bool SectionStarted = false; |
| struct NameOffset { |
| StringRef Name; |
| uint64_t Offset; |
| }; |
| std::vector<NameOffset> SecEntries; |
| NameOffset Current; |
| auto PrintSection = [&]() { |
| OS << "Dependent libraries section " << Current.Name << " at offset " |
| << format_hex(Current.Offset, 1) << " contains " << SecEntries.size() |
| << " entries:\n"; |
| for (NameOffset Entry : SecEntries) |
| OS << " [" << format("%6" PRIx64, Entry.Offset) << "] " << Entry.Name |
| << "\n"; |
| OS << "\n"; |
| SecEntries.clear(); |
| }; |
| |
| auto OnSectionStart = [&](const Elf_Shdr &Shdr) { |
| if (SectionStarted) |
| PrintSection(); |
| SectionStarted = true; |
| Current.Offset = Shdr.sh_offset; |
| Current.Name = this->getPrintableSectionName(Shdr); |
| }; |
| auto OnLibEntry = [&](StringRef Lib, uint64_t Offset) { |
| SecEntries.push_back(NameOffset{Lib, Offset}); |
| }; |
| |
| this->printDependentLibsHelper(OnSectionStart, OnLibEntry); |
| if (SectionStarted) |
| PrintSection(); |
| } |
| |
| // Used for printing symbol names in places where possible errors can be |
| // ignored. |
| static std::string getSymbolName(const ELFSymbolRef &Sym) { |
| Expected<StringRef> NameOrErr = Sym.getName(); |
| if (NameOrErr) |
| return maybeDemangle(*NameOrErr); |
| consumeError(NameOrErr.takeError()); |
| return "<?>"; |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printFunctionStackSize( |
| uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec, |
| const Elf_Shdr &StackSizeSec, DataExtractor Data, uint64_t *Offset) { |
| // This function ignores potentially erroneous input, unless it is directly |
| // related to stack size reporting. |
| SymbolRef FuncSym; |
| for (const ELFSymbolRef &Symbol : ElfObj.symbols()) { |
| Expected<uint64_t> SymAddrOrErr = Symbol.getAddress(); |
| if (!SymAddrOrErr) { |
| consumeError(SymAddrOrErr.takeError()); |
| continue; |
| } |
| if (Expected<uint32_t> SymFlags = Symbol.getFlags()) { |
| if (*SymFlags & SymbolRef::SF_Undefined) |
| continue; |
| } else |
| consumeError(SymFlags.takeError()); |
| if (Symbol.getELFType() == ELF::STT_FUNC && *SymAddrOrErr == SymValue) { |
| // Check if the symbol is in the right section. FunctionSec == None means |
| // "any section". |
| if (!FunctionSec || |
| ElfObj.toSectionRef(*FunctionSec).containsSymbol(Symbol)) { |
| FuncSym = Symbol; |
| break; |
| } |
| } |
| } |
| |
| std::string FuncName = "?"; |
| // A valid SymbolRef has a non-null object file pointer. |
| if (FuncSym.BasicSymbolRef::getObject()) |
| FuncName = getSymbolName(FuncSym); |
| else |
| reportWarning( |
| createError("could not identify function symbol for stack size entry"), |
| FileName); |
| |
| // Extract the size. The expectation is that Offset is pointing to the right |
| // place, i.e. past the function address. |
| uint64_t PrevOffset = *Offset; |
| uint64_t StackSize = Data.getULEB128(Offset); |
| // getULEB128() does not advance Offset if it is not able to extract a valid |
| // integer. |
| if (*Offset == PrevOffset) { |
| reportWarning(createStringError(object_error::parse_failed, |
| "could not extract a valid stack size in " + |
| describe(Obj, StackSizeSec)), |
| FileName); |
| return; |
| } |
| |
| printStackSizeEntry(StackSize, FuncName); |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { |
| OS.PadToColumn(2); |
| OS << format_decimal(Size, 11); |
| OS.PadToColumn(18); |
| OS << FuncName << "\n"; |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printStackSize(const Relocation<ELFT> &R, |
| const Elf_Shdr &RelocSec, unsigned Ndx, |
| const Elf_Shdr *SymTab, |
| const Elf_Shdr *FunctionSec, |
| const Elf_Shdr &StackSizeSec, |
| const RelocationResolver &Resolver, |
| DataExtractor Data) { |
| // This function ignores potentially erroneous input, unless it is directly |
| // related to stack size reporting. |
| const Elf_Sym *Sym = nullptr; |
| Expected<RelSymbol<ELFT>> TargetOrErr = |
| this->dumper().getRelocationTarget(R, SymTab); |
| if (!TargetOrErr) |
| reportUniqueWarning( |
| createError("unable to get the target of relocation with index " + |
| Twine(Ndx) + " in " + describe(Obj, RelocSec) + ": " + |
| toString(TargetOrErr.takeError()))); |
| else |
| Sym = TargetOrErr->Sym; |
| |
| uint64_t RelocSymValue = 0; |
| if (Sym) { |
| Expected<const Elf_Shdr *> SectionOrErr = |
| this->Obj.getSection(*Sym, SymTab, this->dumper().getShndxTable()); |
| if (!SectionOrErr) { |
| reportUniqueWarning(createError( |
| "cannot identify the section for relocation symbol '" + |
| (*TargetOrErr).Name + "': " + toString(SectionOrErr.takeError()))); |
| } else if (*SectionOrErr != FunctionSec) { |
| reportUniqueWarning(createError("relocation symbol '" + |
| (*TargetOrErr).Name + |
| "' is not in the expected section")); |
| // Pretend that the symbol is in the correct section and report its |
| // stack size anyway. |
| FunctionSec = *SectionOrErr; |
| } |
| |
| RelocSymValue = Sym->st_value; |
| } |
| |
| uint64_t Offset = R.Offset; |
| if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { |
| reportUniqueWarning(createStringError( |
| object_error::parse_failed, |
| "found invalid relocation offset (0x" + Twine::utohexstr(Offset) + |
| ") into " + describe(Obj, StackSizeSec) + |
| " while trying to extract a stack size entry")); |
| return; |
| } |
| |
| uint64_t SymValue = |
| Resolver(R.Type, Offset, RelocSymValue, Data.getAddress(&Offset), |
| R.Addend.getValueOr(0)); |
| this->printFunctionStackSize(SymValue, FunctionSec, StackSizeSec, Data, |
| &Offset); |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printNonRelocatableStackSizes( |
| std::function<void()> PrintHeader) { |
| // This function ignores potentially erroneous input, unless it is directly |
| // related to stack size reporting. |
| for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { |
| if (this->getPrintableSectionName(Sec) != ".stack_sizes") |
| continue; |
| PrintHeader(); |
| ArrayRef<uint8_t> Contents = |
| unwrapOrError(this->FileName, Obj.getSectionContents(Sec)); |
| DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr)); |
| uint64_t Offset = 0; |
| while (Offset < Contents.size()) { |
| // The function address is followed by a ULEB representing the stack |
| // size. Check for an extra byte before we try to process the entry. |
| if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { |
| reportUniqueWarning(createStringError( |
| object_error::parse_failed, |
| describe(Obj, Sec) + |
| " ended while trying to extract a stack size entry")); |
| break; |
| } |
| uint64_t SymValue = Data.getAddress(&Offset); |
| printFunctionStackSize(SymValue, /*FunctionSec=*/None, Sec, Data, |
| &Offset); |
| } |
| } |
| } |
| |
| template <class ELFT> |
| void DumpStyle<ELFT>::printRelocatableStackSizes( |
| std::function<void()> PrintHeader) { |
| // Build a map between stack size sections and their corresponding relocation |
| // sections. |
| llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> StackSizeRelocMap; |
| for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { |
| StringRef SectionName; |
| if (Expected<StringRef> NameOrErr = Obj.getSectionName(Sec)) |
| SectionName = *NameOrErr; |
| else |
| consumeError(NameOrErr.takeError()); |
| |
| // A stack size section that we haven't encountered yet is mapped to the |
| // null section until we find its corresponding relocation section. |
| if (SectionName == ".stack_sizes") |
| if (StackSizeRelocMap |
| .insert(std::make_pair(&Sec, (const Elf_Shdr *)nullptr)) |
| .second) |
| continue; |
| |
| // Check relocation sections if they are relocating contents of a |
| // stack sizes section. |
| if (Sec.sh_type != ELF::SHT_RELA && Sec.sh_type != ELF::SHT_REL) |
| continue; |
| |
| Expected<const Elf_Shdr *> RelSecOrErr = Obj.getSection(Sec.sh_info); |
| if (!RelSecOrErr) { |
| reportUniqueWarning(createStringError( |
| object_error::parse_failed, |
| describe(Obj, Sec) + ": failed to get a relocated section: " + |
| toString(RelSecOrErr.takeError()))); |
| continue; |
| } |
| |
| const Elf_Shdr *ContentsSec = *RelSecOrErr; |
| if (this->getPrintableSectionName(**RelSecOrErr) != ".stack_sizes") |
| continue; |
| |
| // Insert a mapping from the stack sizes section to its relocation section. |
| StackSizeRelocMap[ContentsSec] = &Sec; |
| } |
| |
| for (const auto &StackSizeMapEntry : StackSizeRelocMap) { |
| PrintHeader(); |
| const Elf_Shdr *StackSizesELFSec = StackSizeMapEntry.first; |
| const Elf_Shdr *RelocSec = StackSizeMapEntry.second; |
| |
| // Warn about stack size sections without a relocation section. |
| if (!RelocSec) { |
| reportWarning(createError(".stack_sizes (" + |
| describe(Obj, *StackSizesELFSec) + |
| ") does not have a corresponding " |
| "relocation section"), |
| FileName); |
| continue; |
| } |
| |
| // A .stack_sizes section header's sh_link field is supposed to point |
| // to the section that contains the functions whose stack sizes are |
| // described in it. |
| const Elf_Shdr *FunctionSec = unwrapOrError( |
| this->FileName, Obj.getSection(StackSizesELFSec->sh_link)); |
| |
| SupportsRelocation IsSupportedFn; |
| RelocationResolver Resolver; |
| std::tie(IsSupportedFn, Resolver) = getRelocationResolver(ElfObj); |
| ArrayRef<uint8_t> Contents = |
| unwrapOrError(this->FileName, Obj.getSectionContents(*StackSizesELFSec)); |
| DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr)); |
| |
| forEachRelocationDo( |
| *RelocSec, /*RawRelr=*/false, |
| [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec, |
| const Elf_Shdr *SymTab) { |
| if (!IsSupportedFn || !IsSupportedFn(R.Type)) { |
| reportUniqueWarning(createStringError( |
| object_error::parse_failed, |
| describe(Obj, *RelocSec) + |
| " contains an unsupported relocation with index " + |
| Twine(Ndx) + ": " + Obj.getRelocationTypeName(R.Type))); |
| return; |
| } |
| |
| this->printStackSize(R, *RelocSec, Ndx, SymTab, FunctionSec, |
| *StackSizesELFSec, Resolver, Data); |
| }, |
| [](const Elf_Relr &) { |
| llvm_unreachable("can't get here, because we only support " |
| "SHT_REL/SHT_RELA sections"); |
| }); |
| } |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printStackSizes() { |
| bool HeaderHasBeenPrinted = false; |
| auto PrintHeader = [&]() { |
| if (HeaderHasBeenPrinted) |
| return; |
| OS << "\nStack Sizes:\n"; |
| OS.PadToColumn(9); |
| OS << "Size"; |
| OS.PadToColumn(18); |
| OS << "Function\n"; |
| HeaderHasBeenPrinted = true; |
| }; |
| |
| // For non-relocatable objects, look directly for sections whose name starts |
| // with .stack_sizes and process the contents. |
| if (this->Obj.getHeader().e_type == ELF::ET_REL) |
| this->printRelocatableStackSizes(PrintHeader); |
| else |
| this->printNonRelocatableStackSizes(PrintHeader); |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { |
| size_t Bias = ELFT::Is64Bits ? 8 : 0; |
| auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { |
| OS.PadToColumn(2); |
| OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); |
| OS.PadToColumn(11 + Bias); |
| OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; |
| OS.PadToColumn(22 + Bias); |
| OS << format_hex_no_prefix(*E, 8 + Bias); |
| OS.PadToColumn(31 + 2 * Bias); |
| OS << Purpose << "\n"; |
| }; |
| |
| OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); |
| OS << " Canonical gp value: " |
| << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; |
| |
| OS << " Reserved entries:\n"; |
| if (ELFT::Is64Bits) |
| OS << " Address Access Initial Purpose\n"; |
| else |
| OS << " Address Access Initial Purpose\n"; |
| PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); |
| if (Parser.getGotModulePointer()) |
| PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); |
| |
| if (!Parser.getLocalEntries().empty()) { |
| OS << "\n"; |
| OS << " Local entries:\n"; |
| if (ELFT::Is64Bits) |
| OS << " Address Access Initial\n"; |
| else |
| OS << " Address Access Initial\n"; |
| for (auto &E : Parser.getLocalEntries()) |
| PrintEntry(&E, ""); |
| } |
| |
| if (Parser.IsStatic) |
| return; |
| |
| if (!Parser.getGlobalEntries().empty()) { |
| OS << "\n"; |
| OS << " Global entries:\n"; |
| if (ELFT::Is64Bits) |
| OS << " Address Access Initial Sym.Val." |
| << " Type Ndx Name\n"; |
| else |
| OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; |
| for (auto &E : Parser.getGlobalEntries()) { |
| const Elf_Sym &Sym = *Parser.getGotSym(&E); |
| const Elf_Sym &FirstSym = this->dumper().dynamic_symbols()[0]; |
| std::string SymName = this->dumper().getFullSymbolName( |
| Sym, &Sym - &FirstSym, this->dumper().getDynamicStringTable(), false); |
| |
| OS.PadToColumn(2); |
| OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); |
| OS.PadToColumn(11 + Bias); |
| OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; |
| OS.PadToColumn(22 + Bias); |
| OS << to_string(format_hex_no_prefix(E, 8 + Bias)); |
| OS.PadToColumn(31 + 2 * Bias); |
| OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias)); |
| OS.PadToColumn(40 + 3 * Bias); |
| OS << printEnum(Sym.getType(), makeArrayRef(ElfSymbolTypes)); |
| OS.PadToColumn(48 + 3 * Bias); |
| OS << getSymbolSectionNdx( |
| Sym, &Sym - this->dumper().dynamic_symbols().begin()); |
| OS.PadToColumn(52 + 3 * Bias); |
| OS << SymName << "\n"; |
| } |
| } |
| |
| if (!Parser.getOtherEntries().empty()) |
| OS << "\n Number of TLS and multi-GOT entries " |
| << Parser.getOtherEntries().size() << "\n"; |
| } |
| |
| template <class ELFT> |
| void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { |
| size_t Bias = ELFT::Is64Bits ? 8 : 0; |
| auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { |
| OS.PadToColumn(2); |
| OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias); |
| OS.PadToColumn(11 + Bias); |
| OS << format_hex_no_prefix(*E, 8 + Bias); |
| OS.PadToColumn(20 + 2 * Bias); |
| OS << Purpose << "\n"; |
| }; |
| |
| OS << "PLT GOT:\n\n"; |
| |
| OS << " Reserved entries:\n"; |
| OS << " Address Initial Purpose\n"; |
| PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); |
| if (Parser.getPltModulePointer()) |
| PrintEntry(Parser.getPltModulePointer(), "Module pointer"); |
| |
| if (!Parser.getPltEntries().empty()) { |
| OS << "\n"; |
| OS << " Entries:\n"; |
| OS << " Address Initial Sym.Val. Type Ndx Name\n"; |
| for (auto &E : Parser.getPltEntries()) { |
| const Elf_Sym &Sym = *Parser.getPltSym(&E); |
| const Elf_Sym &FirstSym = |
| *cantFail(this->Obj.template getEntry<const Elf_Sym>( |
| *Parser.getPltSymTable(), 0)); |
| std::string SymName = this->dumper().getFullSymbolName( |
| Sym, &Sym - &FirstSym, this->dumper().getDynamicStringTable(), false); |
| |
| OS.PadToColumn(2); |
| OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias)); |
| OS.PadToColumn(11 + Bias); |
| OS << to_string(format_hex_no_prefix(E, 8 + Bias)); |
| OS.PadToColumn(20 + 2 * Bias); |
| OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias)); |
| OS.PadToColumn(29 + 3 * Bias); |
| OS << printEnum(Sym.getType(), makeArrayRef(ElfSymbolTypes)); |
| OS.PadToColumn(37 + 3 * Bias); |
| OS << getSymbolSectionNdx( |
| Sym, &Sym - this->dumper().dynamic_symbols().begin()); |
| OS.PadToColumn(41 + 3 * Bias); |
| OS << SymName << "\n"; |
| } |
| } |
| } |
| |
| template <class ELFT> |
| Expected<const Elf_Mips_ABIFlags<ELFT> *> |
| getMipsAbiFlagsSection(const ELFDumper<ELFT> &Dumper) { |
| const typename ELFT::Shdr *Sec = Dumper.findSectionByName(".MIPS.abiflags"); |
| if (Sec == nullptr) |
| return nullptr; |
| |
| constexpr StringRef ErrPrefix = "unable to read the .MIPS.abiflags section: "; |
| Expected<ArrayRef<uint8_t>> DataOrErr = |
| Dumper.getElfObject().getELFFile()->getSectionContents(*Sec); |
| if (!DataOrErr) |
| return createError(ErrPrefix + toString(DataOrErr.takeError())); |
| |
| if (DataOrErr->size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) |
| return createError(ErrPrefix + "it has a wrong size (" + |
| Twine(DataOrErr->size()) + ")"); |
| return reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(DataOrErr->data()); |
| } |
| |
| template <class ELFT> void GNUStyle<ELFT>::printMipsABIFlags() { |
| const Elf_Mips_ABIFlags<ELFT> *Flags = nullptr; |
| if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr = |
| getMipsAbiFlagsSection(this->dumper())) |
| Flags = *SecOrErr; |
| else |
| this->reportUniqueWarning(SecOrErr.takeError()); |
| if (!Flags) |
| return; |
| |
| OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n"; |
| OS << "ISA: MIPS" << int(Flags->isa_level); |
| if (Flags->isa_rev > 1) |
| OS << "r" << int(Flags->isa_rev); |
| OS << "\n"; |
| OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n"; |
| OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n"; |
| OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n"; |
| OS << "FP ABI: " << printEnum(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)) |
| << "\n"; |
| OS << "ISA Extension: " |
| << printEnum(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n"; |
| if (Flags->ases == 0) |
| OS << "ASEs: None\n"; |
| else |
| // FIXME: Print each flag on a separate line. |
| OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags)) |
| << "\n"; |
| OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n"; |
| OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n"; |
| OS << "\n"; |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders() { |
| const Elf_Ehdr &E = this->Obj.getHeader(); |
| { |
| DictScope D(W, "ElfHeader"); |
| { |
| DictScope D(W, "Ident"); |
| W.printBinary("Magic", makeArrayRef(E.e_ident).slice(ELF::EI_MAG0, 4)); |
| W.printEnum("Class", E.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); |
| W.printEnum("DataEncoding", E.e_ident[ELF::EI_DATA], |
| makeArrayRef(ElfDataEncoding)); |
| W.printNumber("FileVersion", E.e_ident[ELF::EI_VERSION]); |
| |
| auto OSABI = makeArrayRef(ElfOSABI); |
| if (E.e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && |
| E.e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { |
| switch (E.e_machine) { |
| case ELF::EM_AMDGPU: |
| OSABI = makeArrayRef(AMDGPUElfOSABI); |
| break; |
| case ELF::EM_ARM: |
| OSABI = makeArrayRef(ARMElfOSABI); |
| break; |
| case ELF::EM_TI_C6000: |
| OSABI = makeArrayRef(C6000ElfOSABI); |
| break; |
| } |
| } |
| W.printEnum("OS/ABI", E.e_ident[ELF::EI_OSABI], OSABI); |
| W.printNumber("ABIVersion", E.e_ident[ELF::EI_ABIVERSION]); |
| W.printBinary("Unused", makeArrayRef(E.e_ident).slice(ELF::EI_PAD)); |
| } |
| |
| W.printEnum("Type", E.e_type, makeArrayRef(ElfObjectFileType)); |
| W.printEnum("Machine", E.e_machine, makeArrayRef(ElfMachineType)); |
| W.printNumber("Version", E.e_version); |
| W.printHex("Entry", E.e_entry); |
| W.printHex("ProgramHeaderOffset", E.e_phoff); |
| W.printHex("SectionHeaderOffset", E.e_shoff); |
| if (E.e_machine == EM_MIPS) |
| W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderMipsFlags), |
| unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), |
| unsigned(ELF::EF_MIPS_MACH)); |
| else if (E.e_machine == EM_AMDGPU) |
| W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), |
| unsigned(ELF::EF_AMDGPU_MACH)); |
| else if (E.e_machine == EM_RISCV) |
| W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderRISCVFlags)); |
| else |
| W.printFlags("Flags", E.e_flags); |
| W.printNumber("HeaderSize", E.e_ehsize); |
| W.printNumber("ProgramHeaderEntrySize", E.e_phentsize); |
| W.printNumber("ProgramHeaderCount", E.e_phnum); |
| W.printNumber("SectionHeaderEntrySize", E.e_shentsize); |
| W.printString("SectionHeaderCount", |
| getSectionHeadersNumString(this->Obj, this->FileName)); |
| W.printString("StringTableSectionIndex", |
| getSectionHeaderTableIndexString(this->Obj, this->FileName)); |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printGroupSections() { |
| DictScope Lists(W, "Groups"); |
| std::vector<GroupSection> V = this->getGroups(); |
| DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); |
| for (const GroupSection &G : V) { |
| DictScope D(W, "Group"); |
| W.printNumber("Name", G.Name, G.ShName); |
| W.printNumber("Index", G.Index); |
| W.printNumber("Link", G.Link); |
| W.printNumber("Info", G.Info); |
| W.printHex("Type", getGroupType(G.Type), G.Type); |
| W.startLine() << "Signature: " << G.Signature << "\n"; |
| |
| ListScope L(W, "Section(s) in group"); |
| for (const GroupMember &GM : G.Members) { |
| const GroupSection *MainGroup = Map[GM.Index]; |
| if (MainGroup != &G) |
| this->reportUniqueWarning( |
| createError("section with index " + Twine(GM.Index) + |
| ", included in the group section with index " + |
| Twine(MainGroup->Index) + |
| ", was also found in the group section with index " + |
| Twine(G.Index))); |
| W.startLine() << GM.Name << " (" << GM.Index << ")\n"; |
| } |
| } |
| |
| if (V.empty()) |
| W.startLine() << "There are no group sections in the file.\n"; |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printRelocations() { |
| ListScope D(W, "Relocations"); |
| |
| for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { |
| if (!isRelocationSec<ELFT>(Sec)) |
| continue; |
| |
| StringRef Name = this->getPrintableSectionName(Sec); |
| unsigned SecNdx = &Sec - &cantFail(this->Obj.sections()).front(); |
| W.startLine() << "Section (" << SecNdx << ") " << Name << " {\n"; |
| W.indent(); |
| this->printRelocationsHelper(Sec); |
| W.unindent(); |
| W.startLine() << "}\n"; |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printRelrReloc(const Elf_Relr &R) { |
| W.startLine() << W.hex(R) << "\n"; |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printReloc(const Relocation<ELFT> &R, unsigned RelIndex, |
| const Elf_Shdr &Sec, const Elf_Shdr *SymTab) { |
| Expected<RelSymbol<ELFT>> Target = |
| this->dumper().getRelocationTarget(R, SymTab); |
| if (!Target) { |
| this->reportUniqueWarning(createError( |
| "unable to print relocation " + Twine(RelIndex) + " in " + |
| describe(this->Obj, Sec) + ": " + toString(Target.takeError()))); |
| return; |
| } |
| |
| printRelRelaReloc(R, Target->Name); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R, |
| StringRef SymbolName) { |
| SmallString<32> RelocName; |
| this->Obj.getRelocationTypeName(R.Type, RelocName); |
| |
| uintX_t Addend = R.Addend.getValueOr(0); |
| if (opts::ExpandRelocs) { |
| DictScope Group(W, "Relocation"); |
| W.printHex("Offset", R.Offset); |
| W.printNumber("Type", RelocName, R.Type); |
| W.printNumber("Symbol", !SymbolName.empty() ? SymbolName : "-", R.Symbol); |
| W.printHex("Addend", Addend); |
| } else { |
| raw_ostream &OS = W.startLine(); |
| OS << W.hex(R.Offset) << " " << RelocName << " " |
| << (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Addend) |
| << "\n"; |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printSectionHeaders() { |
| ListScope SectionsD(W, "Sections"); |
| |
| int SectionIndex = -1; |
| std::vector<EnumEntry<unsigned>> FlagsList = |
| getSectionFlagsForTarget(this->Obj.getHeader().e_machine); |
| for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { |
| DictScope SectionD(W, "Section"); |
| W.printNumber("Index", ++SectionIndex); |
| W.printNumber("Name", this->getPrintableSectionName(Sec), Sec.sh_name); |
| W.printHex("Type", |
| object::getELFSectionTypeName(this->Obj.getHeader().e_machine, |
| Sec.sh_type), |
| Sec.sh_type); |
| W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList)); |
| W.printHex("Address", Sec.sh_addr); |
| W.printHex("Offset", Sec.sh_offset); |
| W.printNumber("Size", Sec.sh_size); |
| W.printNumber("Link", Sec.sh_link); |
| W.printNumber("Info", Sec.sh_info); |
| W.printNumber("AddressAlignment", Sec.sh_addralign); |
| W.printNumber("EntrySize", Sec.sh_entsize); |
| |
| if (opts::SectionRelocations) { |
| ListScope D(W, "Relocations"); |
| this->printRelocationsHelper(Sec); |
| } |
| |
| if (opts::SectionSymbols) { |
| ListScope D(W, "Symbols"); |
| if (const Elf_Shdr *Symtab = this->dumper().getDotSymtabSec()) { |
| StringRef StrTable = unwrapOrError( |
| this->FileName, this->Obj.getStringTableForSymtab(*Symtab)); |
| |
| typename ELFT::SymRange Symbols = |
| unwrapOrError(this->FileName, this->Obj.symbols(Symtab)); |
| for (const Elf_Sym &Sym : Symbols) { |
| const Elf_Shdr *SymSec = unwrapOrError( |
| this->FileName, this->Obj.getSection( |
| Sym, Symtab, this->dumper().getShndxTable())); |
| if (SymSec == &Sec) |
| printSymbol(Sym, &Sym - &Symbols[0], StrTable, false, false); |
| } |
| } |
| } |
| |
| if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { |
| ArrayRef<uint8_t> Data = |
| unwrapOrError(this->FileName, this->Obj.getSectionContents(Sec)); |
| W.printBinaryBlock( |
| "SectionData", |
| StringRef(reinterpret_cast<const char *>(Data.data()), Data.size())); |
| } |
| } |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printSymbolSection(const Elf_Sym &Symbol, |
| unsigned SymIndex) { |
| auto GetSectionSpecialType = [&]() -> Optional<StringRef> { |
| if (Symbol.isUndefined()) |
| return StringRef("Undefined"); |
| if (Symbol.isProcessorSpecific()) |
| return StringRef("Processor Specific"); |
| if (Symbol.isOSSpecific()) |
| return StringRef("Operating System Specific"); |
| if (Symbol.isAbsolute()) |
| return StringRef("Absolute"); |
| if (Symbol.isCommon()) |
| return StringRef("Common"); |
| if (Symbol.isReserved() && Symbol.st_shndx != SHN_XINDEX) |
| return StringRef("Reserved"); |
| return None; |
| }; |
| |
| if (Optional<StringRef> Type = GetSectionSpecialType()) { |
| W.printHex("Section", *Type, Symbol.st_shndx); |
| return; |
| } |
| |
| Expected<unsigned> SectionIndex = |
| this->dumper().getSymbolSectionIndex(Symbol, SymIndex); |
| if (!SectionIndex) { |
| assert(Symbol.st_shndx == SHN_XINDEX && |
| "getSymbolSectionIndex should only fail due to an invalid " |
| "SHT_SYMTAB_SHNDX table/reference"); |
| this->reportUniqueWarning(SectionIndex.takeError()); |
| W.printHex("Section", "Reserved", SHN_XINDEX); |
| return; |
| } |
| |
| Expected<StringRef> SectionName = |
| this->dumper().getSymbolSectionName(Symbol, *SectionIndex); |
| if (!SectionName) { |
| // Don't report an invalid section name if the section headers are missing. |
| // In such situations, all sections will be "invalid". |
| if (!this->dumper().getElfObject().sections().empty()) |
| this->reportUniqueWarning(SectionName.takeError()); |
| else |
| consumeError(SectionName.takeError()); |
| W.printHex("Section", "<?>", *SectionIndex); |
| } else { |
| W.printHex("Section", *SectionName, *SectionIndex); |
| } |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, |
| Optional<StringRef> StrTable, bool IsDynamic, |
| bool /*NonVisibilityBitsUsed*/) { |
| std::string FullSymbolName = |
| this->dumper().getFullSymbolName(Symbol, SymIndex, StrTable, IsDynamic); |
| unsigned char SymbolType = Symbol.getType(); |
| |
| DictScope D(W, "Symbol"); |
| W.printNumber("Name", FullSymbolName, Symbol.st_name); |
| W.printHex("Value", Symbol.st_value); |
| W.printNumber("Size", Symbol.st_size); |
| W.printEnum("Binding", Symbol.getBinding(), makeArrayRef(ElfSymbolBindings)); |
| if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && |
| SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) |
| W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); |
| else |
| W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); |
| if (Symbol.st_other == 0) |
| // Usually st_other flag is zero. Do not pollute the output |
| // by flags enumeration in that case. |
| W.printNumber("Other", 0); |
| else { |
| std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), |
| std::end(ElfSymOtherFlags)); |
| if (this->Obj.getHeader().e_machine == EM_MIPS) { |
| // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 |
| // flag overlapped with other ST_MIPS_xxx flags. So consider both |
| // cases separately. |
| if ((Symbol.st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) |
| SymOtherFlags.insert(SymOtherFlags.end(), |
| std::begin(ElfMips16SymOtherFlags), |
| std::end(ElfMips16SymOtherFlags)); |
| else |
| SymOtherFlags.insert(SymOtherFlags.end(), |
| std::begin(ElfMipsSymOtherFlags), |
| std::end(ElfMipsSymOtherFlags)); |
| } |
| W.printFlags("Other", Symbol.st_other, makeArrayRef(SymOtherFlags), 0x3u); |
| } |
| printSymbolSection(Symbol, SymIndex); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printSymbols(bool PrintSymbols, |
| bool PrintDynamicSymbols) { |
| if (PrintSymbols) |
| printSymbols(); |
| if (PrintDynamicSymbols) |
| printDynamicSymbols(); |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printSymbols() { |
| ListScope Group(W, "Symbols"); |
| this->dumper().printSymbolsHelper(false); |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printDynamicSymbols() { |
| ListScope Group(W, "DynamicSymbols"); |
| this->dumper().printSymbolsHelper(true); |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printDynamic() { |
| Elf_Dyn_Range Table = this->dumper().dynamic_table(); |
| if (Table.empty()) |
| return; |
| |
| W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n"; |
| |
| size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table); |
| // The "Name/Value" column should be indented from the "Type" column by N |
| // spaces, where N = MaxTagSize - length of "Type" (4) + trailing |
| // space (1) = -3. |
| W.startLine() << " Tag" << std::string(ELFT::Is64Bits ? 16 : 8, ' ') |
| << "Type" << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; |
| |
| std::string ValueFmt = "%-" + std::to_string(MaxTagSize) + "s "; |
| for (auto Entry : Table) { |
| uintX_t Tag = Entry.getTag(); |
| std::string Value = this->dumper().getDynamicEntry(Tag, Entry.getVal()); |
| W.startLine() << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10, true) |
| << " " |
| << format(ValueFmt.c_str(), |
| this->Obj.getDynamicTagAsString(Tag).c_str()) |
| << Value << "\n"; |
| } |
| W.startLine() << "]\n"; |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printDynamicRelocations() { |
| W.startLine() << "Dynamic Relocations {\n"; |
| W.indent(); |
| this->printDynamicRelocationsHelper(); |
| W.unindent(); |
| W.startLine() << "}\n"; |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printDynamicReloc(const Relocation<ELFT> &R) { |
| RelSymbol<ELFT> S = |
| getSymbolForReloc(this->Obj, this->FileName, this->dumper(), R); |
| printRelRelaReloc(R, S.Name); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printProgramHeaders( |
| bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { |
| if (PrintProgramHeaders) |
| printProgramHeaders(); |
| if (PrintSectionMapping == cl::BOU_TRUE) |
| printSectionMapping(); |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printProgramHeaders() { |
| ListScope L(W, "ProgramHeaders"); |
| |
| Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); |
| if (!PhdrsOrErr) { |
| this->reportUniqueWarning(createError("unable to dump program headers: " + |
| toString(PhdrsOrErr.takeError()))); |
| return; |
| } |
| |
| for (const Elf_Phdr &Phdr : *PhdrsOrErr) { |
| DictScope P(W, "ProgramHeader"); |
| StringRef Type = |
| segmentTypeToString(this->Obj.getHeader().e_machine, Phdr.p_type); |
| |
| W.printHex("Type", Type.empty() ? "Unknown" : Type, Phdr.p_type); |
| W.printHex("Offset", Phdr.p_offset); |
| W.printHex("VirtualAddress", Phdr.p_vaddr); |
| W.printHex("PhysicalAddress", Phdr.p_paddr); |
| W.printNumber("FileSize", Phdr.p_filesz); |
| W.printNumber("MemSize", Phdr.p_memsz); |
| W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); |
| W.printNumber("Alignment", Phdr.p_align); |
| } |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) { |
| ListScope SS(W, "VersionSymbols"); |
| if (!Sec) |
| return; |
| |
| StringRef StrTable; |
| ArrayRef<Elf_Sym> Syms; |
| Expected<ArrayRef<Elf_Versym>> VerTableOrErr = |
| this->dumper().getVersionTable(*Sec, &Syms, &StrTable); |
| if (!VerTableOrErr) { |
| this->reportUniqueWarning(VerTableOrErr.takeError()); |
| return; |
| } |
| |
| if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size()) |
| return; |
| |
| for (size_t I = 0, E = Syms.size(); I < E; ++I) { |
| DictScope S(W, "Symbol"); |
| W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION); |
| W.printString("Name", this->dumper().getFullSymbolName(Syms[I], I, StrTable, |
| /*IsDynamic=*/true)); |
| } |
| } |
| |
| static const EnumEntry<unsigned> SymVersionFlags[] = { |
| {"Base", "BASE", VER_FLG_BASE}, |
| {"Weak", "WEAK", VER_FLG_WEAK}, |
| {"Info", "INFO", VER_FLG_INFO}}; |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) { |
| ListScope SD(W, "VersionDefinitions"); |
| if (!Sec) |
| return; |
| |
| Expected<std::vector<VerDef>> V = this->dumper().getVersionDefinitions(*Sec); |
| if (!V) { |
| this->reportUniqueWarning(V.takeError()); |
| return; |
| } |
| |
| for (const VerDef &D : *V) { |
| DictScope Def(W, "Definition"); |
| W.printNumber("Version", D.Version); |
| W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags)); |
| W.printNumber("Index", D.Ndx); |
| W.printNumber("Hash", D.Hash); |
| W.printString("Name", D.Name.c_str()); |
| W.printList( |
| "Predecessors", D.AuxV, |
| [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); }); |
| } |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) { |
| ListScope SD(W, "VersionRequirements"); |
| if (!Sec) |
| return; |
| |
| Expected<std::vector<VerNeed>> V = this->dumper().getVersionDependencies(*Sec); |
| if (!V) { |
| this->reportUniqueWarning(V.takeError()); |
| return; |
| } |
| |
| for (const VerNeed &VN : *V) { |
| DictScope Entry(W, "Dependency"); |
| W.printNumber("Version", VN.Version); |
| W.printNumber("Count", VN.Cnt); |
| W.printString("FileName", VN.File.c_str()); |
| |
| ListScope L(W, "Entries"); |
| for (const VernAux &Aux : VN.AuxV) { |
| DictScope Entry(W, "Entry"); |
| W.printNumber("Hash", Aux.Hash); |
| W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags)); |
| W.printNumber("Index", Aux.Other); |
| W.printString("Name", Aux.Name.c_str()); |
| } |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printHashHistograms() { |
| W.startLine() << "Hash Histogram not implemented!\n"; |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printCGProfile() { |
| ListScope L(W, "CGProfile"); |
| if (!this->dumper().getDotCGProfileSec()) |
| return; |
| |
| Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr = |
| this->Obj.template getSectionContentsAsArray<Elf_CGProfile>( |
| *this->dumper().getDotCGProfileSec()); |
| if (!CGProfileOrErr) { |
| this->reportUniqueWarning( |
| createError("unable to dump the SHT_LLVM_CALL_GRAPH_PROFILE section: " + |
| toString(CGProfileOrErr.takeError()))); |
| return; |
| } |
| |
| for (const Elf_CGProfile &CGPE : *CGProfileOrErr) { |
| DictScope D(W, "CGProfileEntry"); |
| W.printNumber("From", this->dumper().getStaticSymbolName(CGPE.cgp_from), |
| CGPE.cgp_from); |
| W.printNumber("To", this->dumper().getStaticSymbolName(CGPE.cgp_to), |
| CGPE.cgp_to); |
| W.printNumber("Weight", CGPE.cgp_weight); |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printAddrsig() { |
| ListScope L(W, "Addrsig"); |
| const Elf_Shdr *Sec = this->dumper().getDotAddrsigSec(); |
| if (!Sec) |
| return; |
| |
| Expected<std::vector<uint64_t>> SymsOrErr = |
| decodeAddrsigSection(this->Obj, *Sec); |
| if (!SymsOrErr) { |
| this->reportUniqueWarning(SymsOrErr.takeError()); |
| return; |
| } |
| |
| for (uint64_t Sym : *SymsOrErr) |
| W.printNumber("Sym", this->dumper().getStaticSymbolName(Sym), Sym); |
| } |
| |
| template <typename ELFT> |
| static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc, |
| ScopedPrinter &W) { |
| switch (NoteType) { |
| default: |
| return; |
| case ELF::NT_GNU_ABI_TAG: { |
| const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); |
| if (!AbiTag.IsValid) { |
| W.printString("ABI", "<corrupt GNU_ABI_TAG>"); |
| } else { |
| W.printString("OS", AbiTag.OSName); |
| W.printString("ABI", AbiTag.ABI); |
| } |
| break; |
| } |
| case ELF::NT_GNU_BUILD_ID: { |
| W.printString("Build ID", getGNUBuildId(Desc)); |
| break; |
| } |
| case ELF::NT_GNU_GOLD_VERSION: |
| W.printString("Version", getGNUGoldVersion(Desc)); |
| break; |
| case ELF::NT_GNU_PROPERTY_TYPE_0: |
| ListScope D(W, "Property"); |
| for (const std::string &Property : getGNUPropertyList<ELFT>(Desc)) |
| W.printString(Property); |
| break; |
| } |
| } |
| |
| static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) { |
| W.printNumber("Page Size", Note.PageSize); |
| for (const CoreFileMapping &Mapping : Note.Mappings) { |
| ListScope D(W, "Mapping"); |
| W.printHex("Start", Mapping.Start); |
| W.printHex("End", Mapping.End); |
| W.printHex("Offset", Mapping.Offset); |
| W.printString("Filename", Mapping.Filename); |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printNotes() { |
| ListScope L(W, "Notes"); |
| |
| std::unique_ptr<DictScope> NoteScope; |
| auto StartNotes = [&](Optional<StringRef> SecName, |
| const typename ELFT::Off Offset, |
| const typename ELFT::Addr Size) { |
| NoteScope = std::make_unique<DictScope>(W, "NoteSection"); |
| W.printString("Name", SecName ? *SecName : "<?>"); |
| W.printHex("Offset", Offset); |
| W.printHex("Size", Size); |
| }; |
| |
| auto EndNotes = [&] { NoteScope.reset(); }; |
| |
| auto ProcessNote = [&](const Elf_Note &Note) { |
| DictScope D2(W, "Note"); |
| StringRef Name = Note.getName(); |
| ArrayRef<uint8_t> Descriptor = Note.getDesc(); |
| Elf_Word Type = Note.getType(); |
| |
| // Print the note owner/type. |
| W.printString("Owner", Name); |
| W.printHex("Data size", Descriptor.size()); |
| |
| StringRef NoteType = |
| getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type); |
| if (!NoteType.empty()) |
| W.printString("Type", NoteType); |
| else |
| W.printString("Type", |
| "Unknown (" + to_string(format_hex(Type, 10)) + ")"); |
| |
| // Print the description, or fallback to printing raw bytes for unknown |
| // owners. |
| if (Name == "GNU") { |
| printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W); |
| } else if (Name == "AMD") { |
| const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); |
| if (!N.Type.empty()) |
| W.printString(N.Type, N.Value); |
| } else if (Name == "AMDGPU") { |
| const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); |
| if (!N.Type.empty()) |
| W.printString(N.Type, N.Value); |
| } else if (Name == "CORE") { |
| if (Type == ELF::NT_FILE) { |
| DataExtractor DescExtractor(Descriptor, |
| ELFT::TargetEndianness == support::little, |
| sizeof(Elf_Addr)); |
| Expected<CoreNote> Note = readCoreNote(DescExtractor); |
| if (Note) |
| printCoreNoteLLVMStyle(*Note, W); |
| else |
| reportWarning(Note.takeError(), this->FileName); |
| } |
| } else if (!Descriptor.empty()) { |
| W.printBinaryBlock("Description data", Descriptor); |
| } |
| }; |
| |
| printNotesHelper(this->dumper(), StartNotes, ProcessNote, EndNotes); |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printELFLinkerOptions() { |
| ListScope L(W, "LinkerOptions"); |
| |
| unsigned I = -1; |
| for (const Elf_Shdr &Shdr : cantFail(this->Obj.sections())) { |
| ++I; |
| if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) |
| continue; |
| |
| Expected<ArrayRef<uint8_t>> ContentsOrErr = |
| this->Obj.getSectionContents(Shdr); |
| if (!ContentsOrErr) { |
| this->reportUniqueWarning( |
| createError("unable to read the content of the " |
| "SHT_LLVM_LINKER_OPTIONS section: " + |
| toString(ContentsOrErr.takeError()))); |
| continue; |
| } |
| if (ContentsOrErr->empty()) |
| continue; |
| |
| if (ContentsOrErr->back() != 0) { |
| this->reportUniqueWarning( |
| createError("SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + |
| " is broken: the " |
| "content is not null-terminated")); |
| continue; |
| } |
| |
| SmallVector<StringRef, 16> Strings; |
| toStringRef(ContentsOrErr->drop_back()).split(Strings, '\0'); |
| if (Strings.size() % 2 != 0) { |
| this->reportUniqueWarning(createError( |
| "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + |
| " is broken: an incomplete " |
| "key-value pair was found. The last possible key was: \"" + |
| Strings.back() + "\"")); |
| continue; |
| } |
| |
| for (size_t I = 0; I < Strings.size(); I += 2) |
| W.printString(Strings[I], Strings[I + 1]); |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printDependentLibs() { |
| ListScope L(W, "DependentLibs"); |
| this->printDependentLibsHelper( |
| [](const Elf_Shdr &) {}, |
| [this](StringRef Lib, uint64_t) { W.printString(Lib); }); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printStackSizes() { |
| ListScope L(W, "StackSizes"); |
| if (this->Obj.getHeader().e_type == ELF::ET_REL) |
| this->printRelocatableStackSizes([]() {}); |
| else |
| this->printNonRelocatableStackSizes([]() {}); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { |
| DictScope D(W, "Entry"); |
| W.printString("Function", FuncName); |
| W.printHex("Size", Size); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { |
| auto PrintEntry = [&](const Elf_Addr *E) { |
| W.printHex("Address", Parser.getGotAddress(E)); |
| W.printNumber("Access", Parser.getGotOffset(E)); |
| W.printHex("Initial", *E); |
| }; |
| |
| DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); |
| |
| W.printHex("Canonical gp value", Parser.getGp()); |
| { |
| ListScope RS(W, "Reserved entries"); |
| { |
| DictScope D(W, "Entry"); |
| PrintEntry(Parser.getGotLazyResolver()); |
| W.printString("Purpose", StringRef("Lazy resolver")); |
| } |
| |
| if (Parser.getGotModulePointer()) { |
| DictScope D(W, "Entry"); |
| PrintEntry(Parser.getGotModulePointer()); |
| W.printString("Purpose", StringRef("Module pointer (GNU extension)")); |
| } |
| } |
| { |
| ListScope LS(W, "Local entries"); |
| for (auto &E : Parser.getLocalEntries()) { |
| DictScope D(W, "Entry"); |
| PrintEntry(&E); |
| } |
| } |
| |
| if (Parser.IsStatic) |
| return; |
| |
| { |
| ListScope GS(W, "Global entries"); |
| for (auto &E : Parser.getGlobalEntries()) { |
| DictScope D(W, "Entry"); |
| |
| PrintEntry(&E); |
| |
| const Elf_Sym &Sym = *Parser.getGotSym(&E); |
| W.printHex("Value", Sym.st_value); |
| W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes)); |
| |
| const unsigned SymIndex = &Sym - this->dumper().dynamic_symbols().begin(); |
| printSymbolSection(Sym, SymIndex); |
| |
| std::string SymName = this->dumper().getFullSymbolName( |
| Sym, SymIndex, this->dumper().getDynamicStringTable(), true); |
| W.printNumber("Name", SymName, Sym.st_name); |
| } |
| } |
| |
| W.printNumber("Number of TLS and multi-GOT entries", |
| uint64_t(Parser.getOtherEntries().size())); |
| } |
| |
| template <class ELFT> |
| void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { |
| auto PrintEntry = [&](const Elf_Addr *E) { |
| W.printHex("Address", Parser.getPltAddress(E)); |
| W.printHex("Initial", *E); |
| }; |
| |
| DictScope GS(W, "PLT GOT"); |
| |
| { |
| ListScope RS(W, "Reserved entries"); |
| { |
| DictScope D(W, "Entry"); |
| PrintEntry(Parser.getPltLazyResolver()); |
| W.printString("Purpose", StringRef("PLT lazy resolver")); |
| } |
| |
| if (auto E = Parser.getPltModulePointer()) { |
| DictScope D(W, "Entry"); |
| PrintEntry(E); |
| W.printString("Purpose", StringRef("Module pointer")); |
| } |
| } |
| { |
| ListScope LS(W, "Entries"); |
| for (auto &E : Parser.getPltEntries()) { |
| DictScope D(W, "Entry"); |
| PrintEntry(&E); |
| |
| const Elf_Sym &Sym = *Parser.getPltSym(&E); |
| W.printHex("Value", Sym.st_value); |
| W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes)); |
| printSymbolSection(Sym, &Sym - this->dumper().dynamic_symbols().begin()); |
| |
| const Elf_Sym *FirstSym = |
| cantFail(this->Obj.template getEntry<const Elf_Sym>( |
| *Parser.getPltSymTable(), 0)); |
| std::string SymName = this->dumper().getFullSymbolName( |
| Sym, &Sym - FirstSym, Parser.getPltStrTable(), true); |
| W.printNumber("Name", SymName, Sym.st_name); |
| } |
| } |
| } |
| |
| template <class ELFT> void LLVMStyle<ELFT>::printMipsABIFlags() { |
| const Elf_Mips_ABIFlags<ELFT> *Flags; |
| if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr = |
| getMipsAbiFlagsSection(this->dumper())) { |
| Flags = *SecOrErr; |
| if (!Flags) { |
| W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; |
| return; |
| } |
| } else { |
| this->reportUniqueWarning(SecOrErr.takeError()); |
| return; |
| } |
| |
| raw_ostream &OS = W.getOStream(); |
| DictScope GS(W, "MIPS ABI Flags"); |
| |
| W.printNumber("Version", Flags->version); |
| W.startLine() << "ISA: "; |
| if (Flags->isa_rev <= 1) |
| OS << format("MIPS%u", Flags->isa_level); |
| else |
| OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); |
| OS << "\n"; |
| W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); |
| W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); |
| W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); |
| W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); |
| W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); |
| W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); |
| W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); |
| W.printHex("Flags 2", Flags->flags2); |
| } |