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40ac5ec4fa
llvm-mirror/tools/llvm-readobj/ELFDumper.cpp
gbreynoo 40ac5ec4fa [llvm-readobj] Display multiple function names for stack size entries 
The current implementation of displaying .stack_size information
presumes that each entry represents a single function but this is not
always the case. For example with the use of ICF multiple functions can
be represented with the same code, meaning that the address found in a
.stack_size entry corresponds to multiple function symbols.
This change allows multiple function names to be displayed when
appropriate.

Differential Revision: https://reviews.llvm.org/D105884
2021-07-26 14:49:53 +01:00

7203 lines
258 KiB
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//===- 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 <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 }
namespace {
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, const ObjDumper &D)
: Obj(&Owner), Dumper(&D) {}
DynRegionInfo(const Binary &Owner, const ObjDumper &D, const uint8_t *A,
uint64_t S, uint64_t ES)
: Addr(A), Size(S), EntSize(ES), Obj(&Owner), Dumper(&D) {}
/// 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;
/// Dumper used for error reporting.
const ObjDumper *Dumper;
/// 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) {
Dumper->reportUniqueWarning(
"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));
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();
Dumper->reportUniqueWarning(Msg);
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 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 <class ELFT> class MipsGOTParser;
template <typename ELFT> class ELFDumper : public ObjDumper {
LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
public:
ELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer);
void printUnwindInfo() override;
void printNeededLibraries() override;
void printHashTable() override;
void printGnuHashTable() override;
void printLoadName() override;
void printVersionInfo() override;
void printArchSpecificInfo() override;
void printStackMap() const override;
const object::ELFObjectFile<ELFT> &getElfObject() const { return ObjF; };
std::string describe(const Elf_Shdr &Sec) const;
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.template getAsArrayRef<Elf_Dyn>();
size_t Size = 0;
while (Size < Table.size())
if (Table[Size++].getTag() == DT_NULL)
break;
return Table.slice(0, Size);
}
Elf_Sym_Range dynamic_symbols() const {
if (!DynSymRegion)
return Elf_Sym_Range();
return DynSymRegion->template getAsArrayRef<Elf_Sym>();
}
const Elf_Shdr *findSectionByName(StringRef Name) const;
StringRef getDynamicStringTable() const { return DynamicStringTable; }
protected:
virtual void printVersionSymbolSection(const Elf_Shdr *Sec) = 0;
virtual void printVersionDefinitionSection(const Elf_Shdr *Sec) = 0;
virtual void printVersionDependencySection(const Elf_Shdr *Sec) = 0;
void
printDependentLibsHelper(function_ref<void(const Elf_Shdr &)> OnSectionStart,
function_ref<void(StringRef, uint64_t)> OnLibEntry);
virtual void printRelRelaReloc(const Relocation<ELFT> &R,
const RelSymbol<ELFT> &RelSym) = 0;
virtual void printRelrReloc(const Elf_Relr &R) = 0;
virtual void printDynamicRelocHeader(unsigned Type, StringRef Name,
const DynRegionInfo &Reg) {}
void printReloc(const Relocation<ELFT> &R, unsigned RelIndex,
const Elf_Shdr &Sec, const Elf_Shdr *SymTab);
void printDynamicReloc(const Relocation<ELFT> &R);
void printDynamicRelocationsHelper();
void printRelocationsHelper(const Elf_Shdr &Sec);
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);
virtual void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset,
bool NonVisibilityBitsUsed) const {};
virtual void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable, bool IsDynamic,
bool NonVisibilityBitsUsed) const = 0;
virtual void printMipsABIFlags() = 0;
virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
Expected<ArrayRef<Elf_Versym>>
getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab,
StringRef *StrTab, const Elf_Shdr **SymTabSec) const;
StringRef getPrintableSectionName(const Elf_Shdr &Sec) const;
std::vector<GroupSection> getGroups();
// Returns the function symbol index for the given address. Matches the
// symbol's section with FunctionSec when specified.
// Returns None if no function symbol can be found for the address or in case
// it is not defined in the specified section.
SmallVector<uint32_t>
getSymbolIndexesForFunctionAddress(uint64_t SymValue,
Optional<const Elf_Shdr *> FunctionSec);
bool 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,
ArrayRef<std::string> FuncNames) = 0;
void printRelocatableStackSizes(std::function<void()> PrintHeader);
void printNonRelocatableStackSizes(std::function<void()> PrintHeader);
/// Retrieves sections with corresponding relocation sections based on
/// IsMatch.
void getSectionAndRelocations(
std::function<bool(const Elf_Shdr &)> IsMatch,
llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> &SecToRelocMap);
const object::ELFObjectFile<ELFT> &ObjF;
const ELFFile<ELFT> &Obj;
StringRef FileName;
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, *this, 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;
Expected<SmallVector<Optional<VersionEntry>, 0> *> getVersionMap() const;
DynRegionInfo DynRelRegion;
DynRegionInfo DynRelaRegion;
DynRegionInfo DynRelrRegion;
DynRegionInfo DynPLTRelRegion;
Optional<DynRegionInfo> DynSymRegion;
DynRegionInfo DynSymTabShndxRegion;
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 *DotAddrsigSec = nullptr;
DenseMap<const Elf_Shdr *, ArrayRef<Elf_Word>> ShndxTables;
Optional<uint64_t> SONameOffset;
Optional<DenseMap<uint64_t, std::vector<uint32_t>>> AddressToIndexMap;
const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version
const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r
const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d
std::string getFullSymbolName(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable,
bool IsDynamic) const;
Expected<unsigned>
getSymbolSectionIndex(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable) const;
Expected<StringRef> getSymbolSectionName(const Elf_Sym &Symbol,
unsigned SectionIndex) const;
std::string getStaticSymbolName(uint32_t Index) const;
StringRef getDynamicString(uint64_t Value) const;
void printSymbolsHelper(bool IsDynamic) const;
std::string getDynamicEntry(uint64_t Type, uint64_t Value) const;
Expected<RelSymbol<ELFT>> getRelocationTarget(const Relocation<ELFT> &R,
const Elf_Shdr *SymTab) const;
ArrayRef<Elf_Word> getShndxTable(const Elf_Shdr *Symtab) const;
private:
mutable SmallVector<Optional<VersionEntry>, 0> VersionMap;
};
template <class ELFT>
std::string ELFDumper<ELFT>::describe(const Elf_Shdr &Sec) const {
return ::describe(Obj, Sec);
}
namespace {
template <class ELFT> struct SymtabLink {
typename ELFT::SymRange Symbols;
StringRef StringTable;
const typename ELFT::Shdr *SymTab;
};
// Returns the linked symbol table, symbols and associated string table for a
// given section.
template <class ELFT>
Expected<SymtabLink<ELFT>> 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 = Obj.getLinkAsStrtab(**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 SymtabLink<ELFT>{*SymsOrErr, *StrTabOrErr, *SymtabOrErr};
}
} // namespace
template <class ELFT>
Expected<ArrayRef<typename ELFT::Versym>>
ELFDumper<ELFT>::getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab,
StringRef *StrTab,
const Elf_Shdr **SymTabSec) const {
assert((!SymTab && !StrTab && !SymTabSec) || (SymTab && StrTab && SymTabSec));
if (reinterpret_cast<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<SymtabLink<ELFT>> SymTabOrErr =
getLinkAsSymtab(Obj, Sec, SHT_DYNSYM);
if (!SymTabOrErr) {
reportUniqueWarning(SymTabOrErr.takeError());
return *VersionsOrErr;
}
if (SymTabOrErr->Symbols.size() != VersionsOrErr->size())
reportUniqueWarning(describe(Sec) + ": the number of entries (" +
Twine(VersionsOrErr->size()) +
") does not match the number of symbols (" +
Twine(SymTabOrErr->Symbols.size()) +
") in the symbol table with index " +
Twine(Sec.sh_link));
if (SymTab) {
*SymTab = SymTabOrErr->Symbols;
*StrTab = SymTabOrErr->StringTable;
*SymTabSec = SymTabOrErr->SymTab;
}
return *VersionsOrErr;
}
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(
"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(
"unable to read symbols from the SHT_SYMTAB section: " +
toString(SymsOrErr.takeError()));
Entries = DotSymtabSec->getEntityCount();
}
if (Syms.empty())
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::any_of(Syms, [](const Elf_Sym &S) { return S.st_other & ~0x3; });
DataRegion<Elf_Word> ShndxTable =
IsDynamic ? DataRegion<Elf_Word>(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr,
this->getElfObject().getELFFile().end())
: DataRegion<Elf_Word>(this->getShndxTable(SymtabSec));
printSymtabMessage(SymtabSec, Entries, NonVisibilityBitsUsed);
for (const Elf_Sym &Sym : Syms)
printSymbol(Sym, &Sym - Syms.begin(), ShndxTable, StrTable, IsDynamic,
NonVisibilityBitsUsed);
}
template <typename ELFT> class GNUELFDumper : public ELFDumper<ELFT> {
formatted_raw_ostream &OS;
public:
LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
GNUELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer)
: ELFDumper<ELFT>(ObjF, Writer),
OS(static_cast<formatted_raw_ostream &>(Writer.getOStream())) {
assert(&this->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 printDynamicTable() override;
void printDynamicRelocations() override;
void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset,
bool NonVisibilityBitsUsed) const 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 printBBAddrMaps() override;
void printAddrsig() override;
void printNotes() override;
void printELFLinkerOptions() override;
void printStackSizes() 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) const {
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 = {}) const {
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) const {
if (F.Column != 0)
OS.PadToColumn(F.Column);
OS << F.Str;
OS.flush();
return OS;
}
void printHashedSymbol(const Elf_Sym *Sym, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable, StringRef StrTable,
uint32_t Bucket);
void printRelrReloc(const Elf_Relr &R) override;
void printRelRelaReloc(const Relocation<ELFT> &R,
const RelSymbol<ELFT> &RelSym) override;
void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable, bool IsDynamic,
bool NonVisibilityBitsUsed) const override;
void printDynamicRelocHeader(unsigned Type, StringRef Name,
const DynRegionInfo &Reg) override;
std::string getSymbolSectionNdx(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable) const;
void printProgramHeaders() override;
void printSectionMapping() override;
void printGNUVersionSectionProlog(const typename ELFT::Shdr &Sec,
const Twine &Label, unsigned EntriesNum);
void printStackSizeEntry(uint64_t Size,
ArrayRef<std::string> FuncNames) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsABIFlags() override;
};
template <typename ELFT> class LLVMELFDumper : public ELFDumper<ELFT> {
public:
LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
LLVMELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer)
: ELFDumper<ELFT>(ObjF, Writer), W(Writer) {}
void printFileHeaders() override;
void printGroupSections() override;
void printRelocations() override;
void printSectionHeaders() override;
void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
void printDependentLibs() override;
void printDynamicTable() 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 printBBAddrMaps() override;
void printAddrsig() override;
void printNotes() override;
void printELFLinkerOptions() override;
void printStackSizes() override;
private:
void printRelrReloc(const Elf_Relr &R) override;
void printRelRelaReloc(const Relocation<ELFT> &R,
const RelSymbol<ELFT> &RelSym) override;
void printSymbolSection(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable) const;
void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable, bool IsDynamic,
bool /*NonVisibilityBitsUsed*/) const override;
void printProgramHeaders() override;
void printSectionMapping() override {}
void printStackSizeEntry(uint64_t Size,
ArrayRef<std::string> FuncNames) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsABIFlags() override;
ScopedPrinter &W;
};
} // end anonymous namespace
namespace llvm {
template <class ELFT>
static std::unique_ptr<ObjDumper>
createELFDumper(const ELFObjectFile<ELFT> &Obj, ScopedPrinter &Writer) {
if (opts::Output == opts::GNU)
return std::make_unique<GNUELFDumper<ELFT>>(Obj, Writer);
return std::make_unique<LLVMELFDumper<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>
Expected<SmallVector<Optional<VersionEntry>, 0> *>
ELFDumper<ELFT>::getVersionMap() const {
// If the VersionMap has already been loaded or if there is no dynamic symtab
// or version table, there is nothing to do.
if (!VersionMap.empty() || !DynSymRegion || !SymbolVersionSection)
return &VersionMap;
Expected<SmallVector<Optional<VersionEntry>, 0>> MapOrErr =
Obj.loadVersionMap(SymbolVersionNeedSection, SymbolVersionDefSection);
if (MapOrErr)
VersionMap = *MapOrErr;
else
return MapOrErr.takeError();
return &VersionMap;
}
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.
Expected<const Elf_Versym *> EntryOrErr =
Obj.template getEntry<Elf_Versym>(*SymbolVersionSection, EntryIndex);
if (!EntryOrErr)
return EntryOrErr.takeError();
unsigned Version = (*EntryOrErr)->vs_index;
if (Version == VER_NDX_LOCAL || Version == VER_NDX_GLOBAL) {
IsDefault = false;
return "";
}
Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr =
getVersionMap();
if (!MapOrErr)
return MapOrErr.takeError();
return Obj.getSymbolVersionByIndex(Version, IsDefault, **MapOrErr,
Sym.st_shndx == ELF::SHN_UNDEF);
}
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 createError("unable to read an entry with index " + Twine(R.Symbol) +
" from " + describe(*SymTab) + ": " +
toString(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, getShndxTable(SymTab),
*StrTableOrErr, SymTab->sh_type == SHT_DYNSYM);
return RelSymbol<ELFT>(Sym, SymbolName);
}
template <typename ELFT>
ArrayRef<typename ELFT::Word>
ELFDumper<ELFT>::getShndxTable(const Elf_Shdr *Symtab) const {
if (Symtab) {
auto It = ShndxTables.find(Symtab);
if (It != ShndxTables.end())
return It->second;
}
return {};
}
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 {
reportUniqueWarning("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>
std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym &Symbol,
unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
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, ShndxTable);
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,
DataRegion<Elf_Word> ShndxTable) 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, "National Semiconductor CompactRISC 16-bit processor"),
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_MICROBLAZE, "Xilinx MicroBlaze 32-bit RISC soft processor core"),
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_GNU_RETAIN, "R"),
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> ElfHeaderAMDGPUFlagsABIVersion3[] = {
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_GFX90A),
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_GFX1013),
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_MACH_AMDGCN_GFX1034),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1035),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_V3),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_V3)
};
static const EnumEntry<unsigned> ElfHeaderAMDGPUFlagsABIVersion4[] = {
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_GFX90A),
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_GFX1013),
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_MACH_AMDGCN_GFX1034),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1035),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_ANY_V4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_OFF_V4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_ON_V4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_ANY_V4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_OFF_V4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_ON_V4)
};
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> ElfHeaderAVRFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR1),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR25),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR3),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR31),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR35),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR5),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR51),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR6),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVRTINY),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA1),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA3),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA5),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA6),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA7),
ENUM_ENT(EF_AVR_LINKRELAX_PREPARED, "relaxable"),
};
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> ElfAArch64SymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STO_AARCH64_VARIANT_PCS)
};
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 {
reportUniqueWarning(
"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(
"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(describe(*DynamicSec) +
" is not contained within the "
"PT_DYNAMIC segment");
if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
reportUniqueWarning(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, *this);
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.template 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, *this);
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.template getAsArrayRef<Elf_Dyn>().empty();
} else {
reportUniqueWarning("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("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("SHT_DYNAMIC section header and PT_DYNAMIC "
"program header disagree about "
"the location of the dynamic table");
if (!IsPhdrTableValid && !IsSecTableValid) {
reportUniqueWarning("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(
"SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used");
DynamicTable = FromPhdr;
} else {
reportUniqueWarning(
"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, O.getFileName()), ObjF(O), Obj(O.getELFFile()),
FileName(O.getFileName()), DynRelRegion(O, *this),
DynRelaRegion(O, *this), DynRelrRegion(O, *this),
DynPLTRelRegion(O, *this), DynSymTabShndxRegion(O, *this),
DynamicTable(O, *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
reportUniqueWarning("unable to get the string table for the " +
describe(Sec) + ": " + toString(E.takeError()));
} else {
reportUniqueWarning("unable to read dynamic symbols from " +
describe(Sec) + ": " +
toString(RegOrErr.takeError()));
}
}
break;
case ELF::SHT_SYMTAB_SHNDX: {
uint32_t SymtabNdx = Sec.sh_link;
if (SymtabNdx >= Sections.size()) {
reportUniqueWarning(
"unable to get the associated symbol table for " + describe(Sec) +
": sh_link (" + Twine(SymtabNdx) +
") is greater than or equal to the total number of sections (" +
Twine(Sections.size()) + ")");
continue;
}
if (Expected<ArrayRef<Elf_Word>> ShndxTableOrErr =
Obj.getSHNDXTable(Sec)) {
if (!ShndxTables.insert({&Sections[SymtabNdx], *ShndxTableOrErr})
.second)
reportUniqueWarning(
"multiple SHT_SYMTAB_SHNDX sections are linked to " +
describe(Sec));
} else {
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_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, [&](const Twine &Msg) {
this->reportUniqueWarning(Msg);
return Error::success();
});
if (!MappedAddrOrError) {
this->reportUniqueWarning("unable to parse DT_" +
Obj.getDynamicTagAsString(Tag) + ": " +
llvm::toString(MappedAddrOrError.takeError()));
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, *this);
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))
this->reportUniqueWarning("DT_SYMENT value of 0x" +
Twine::utohexstr(Val) +
" is not the size of a symbol (0x" +
Twine::utohexstr(sizeof(Elf_Sym)) + ")");
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
reportUniqueWarning(Twine("unknown DT_PLTREL value of ") +
Twine((uint64_t)Dyn.getVal()));
DynPLTRelRegion.EntSizePrintName = "PLTREL entry size";
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;
case ELF::DT_SYMTAB_SHNDX:
DynSymTabShndxRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
DynSymTabShndxRegion.EntSize = sizeof(Elf_Word);
break;
}
}
if (StringTableBegin) {
const uint64_t FileSize = Obj.getBufSize();
const uint64_t Offset = (const uint8_t *)StringTableBegin - Obj.base();
if (StringTableSize > FileSize - Offset)
reportUniqueWarning(
"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("SHT_DYNSYM section has sh_entsize == 0");
else if (HashTable->nchain != DynSymRegion->Size / DynSymRegion->EntSize)
reportUniqueWarning(
"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(
"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> void ELFDumper<ELFT>::printVersionInfo() {
// Dump version symbol section.
printVersionSymbolSection(SymbolVersionSection);
// Dump version definition section.
printVersionDefinitionSection(SymbolVersionDefSection);
// Dump version dependency section.
printVersionDependencySection(SymbolVersionNeedSection);
}
#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("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:
case DT_AARCH64_VARIANT_PCS:
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("string table was not found");
return "<?>";
}
auto WarnAndReturn = [this](const Twine &Msg, uint64_t Offset) {
reportUniqueWarning("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();
}
// The namespace is needed to fix the compilation with GCC older than 7.0+.
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();
}
} // namespace
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->template 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("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: {
printMipsABIFlags();
printMipsOptions();
printMipsReginfo();
MipsGOTParser<ELFT> Parser(*this);
if (Error E = Parser.findGOT(dynamic_table(), dynamic_symbols()))
reportUniqueWarning(std::move(E));
else if (!Parser.isGotEmpty())
printMipsGOT(Parser);
if (Error E = Parser.findPLT(dynamic_table()))
reportUniqueWarning(std::move(E));
else if (!Parser.isPltEmpty())
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;
if (Expected<ArrayRef<uint8_t>> ContentOrErr =
Obj.getSectionContents(Sec)) {
Contents = *ContentOrErr;
if (Contents.empty()) {
reportUniqueWarning("the " + describe(Sec) + " is empty");
continue;
}
} else {
reportUniqueWarning("unable to read the content of the " + describe(Sec) +
": " + toString(ContentOrErr.takeError()));
continue;
}
W.printHex("FormatVersion", Contents[0]);
auto ParseAttrubutes = [&]() {
if (Machine == EM_ARM)
return ARMAttributeParser(&W).parse(Contents, support::little);
return RISCVAttributeParser(&W).parse(Contents, support::little);
};
if (Error E = ParseAttrubutes())
reportUniqueWarning("unable to dump attributes from the " +
describe(Sec) + ": " + toString(std::move(E)));
}
}
namespace {
template <class ELFT> class MipsGOTParser {
public:
LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
using Entry = typename ELFT::Addr;
using Entries = ArrayRef<Entry>;
const bool IsStatic;
const ELFFile<ELFT> &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(
"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("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("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>::printReloc(const Relocation<ELFT> &R, unsigned RelIndex,
const Elf_Shdr &Sec, const Elf_Shdr *SymTab) {
Expected<RelSymbol<ELFT>> Target = getRelocationTarget(R, SymTab);
if (!Target)
reportUniqueWarning("unable to print relocation " + Twine(RelIndex) +
" in " + describe(Sec) + ": " +
toString(Target.takeError()));
else
printRelRelaReloc(R, *Target);
}
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) + ")";
}
static const EnumEntry<unsigned> *getObjectFileEnumEntry(unsigned Type) {
auto It = llvm::find_if(ElfObjectFileType, [&](const EnumEntry<unsigned> &E) {
return E.Value == Type;
});
if (It != makeArrayRef(ElfObjectFileType).end())
return It;
return nullptr;
}
template <class ELFT> void GNUELFDumper<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]));
if (const EnumEntry<unsigned> *E = getObjectFileEnumEntry(e.e_type)) {
Str = E->AltName.str();
} else {
if (e.e_type >= ET_LOPROC)
Str = "Processor Specific: (" + to_hexString(e.e_type, false) + ")";
else if (e.e_type >= ET_LOOS)
Str = "OS Specific: (" + to_hexString(e.e_type, false) + ")";
else
Str = "<unknown>: " + to_hexString(e.e_type, false);
}
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));
else if (e.e_machine == EM_AVR)
ElfFlags = printFlags(e.e_flags, makeArrayRef(ElfHeaderAVRFlags),
unsigned(ELF::EF_AVR_ARCH_MASK));
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> ELFDumper<ELFT>::getGroups() {
auto GetSignature = [&](const Elf_Sym &Sym, unsigned SymNdx,
const Elf_Shdr &Symtab) -> StringRef {
Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(Symtab);
if (!StrTableOrErr) {
reportUniqueWarning("unable to get the string table for " +
describe(Symtab) + ": " +
toString(StrTableOrErr.takeError()));
return "<?>";
}
StringRef Strings = *StrTableOrErr;
if (Sym.st_name >= Strings.size()) {
reportUniqueWarning("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("unable to get the signature symbol for " +
describe(Sec) + ": " +
toString(SymOrErr.takeError()));
} else {
reportUniqueWarning("unable to get the symbol table for " +
describe(Sec) + ": " +
toString(SymtabOrErr.takeError()));
}
ArrayRef<Elf_Word> Data;
if (Expected<ArrayRef<Elf_Word>> ContentsOrErr =
Obj.template getSectionContentsAsArray<Elf_Word>(Sec)) {
if (ContentsOrErr->empty())
reportUniqueWarning("unable to read the section group flag from the " +
describe(Sec) + ": the section is empty");
else
Data = *ContentsOrErr;
} else {
reportUniqueWarning("unable to get the content of the " + describe(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("unable to get the section with index " +
Twine(Ndx) + " when dumping the " + describe(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 GNUELFDumper<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(
"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 GNUELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) {
OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) << "\n";
}
template <class ELFT>
void GNUELFDumper<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 GNUELFDumper<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 GNUELFDumper<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("unable to get the number of relocations in " +
this->describe(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";
OS << " R (retain)";
if (EMachine == EM_X86_64)
OS << ", l (large)";
else if (EMachine == EM_ARM)
OS << ", y (purecode)";
OS << ", p (processor specific)\n";
}
template <class ELFT> void GNUELFDumper<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->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 GNUELFDumper<ELFT>::printSymtabMessage(const Elf_Shdr *Symtab,
size_t Entries,
bool NonVisibilityBitsUsed) const {
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
GNUELFDumper<ELFT>::getSymbolSectionNdx(const Elf_Sym &Symbol,
unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable) const {
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, ShndxTable);
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 GNUELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable,
bool IsDynamic,
bool NonVisibilityBitsUsed) const {
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) {
if (this->Obj.getHeader().e_machine == ELF::EM_AARCH64) {
uint8_t Other = Symbol.st_other & ~0x3;
if (Other & STO_AARCH64_VARIANT_PCS) {
Other &= ~STO_AARCH64_VARIANT_PCS;
Fields[5].Str += " [VARIANT_PCS";
if (Other != 0)
Fields[5].Str.append(" | " + to_hexString(Other, false));
Fields[5].Str.append("]");
}
} else {
Fields[5].Str +=
" [<other: " + to_string(format_hex(Symbol.st_other, 2)) + ">]";
}
}
Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0;
Fields[6].Str = getSymbolSectionNdx(Symbol, SymIndex, ShndxTable);
Fields[7].Str = this->getFullSymbolName(Symbol, SymIndex, ShndxTable,
StrTable, IsDynamic);
for (const Field &Entry : Fields)
printField(Entry);
OS << "\n";
}
template <class ELFT>
void GNUELFDumper<ELFT>::printHashedSymbol(const Elf_Sym *Symbol,
unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
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, ShndxTable);
Fields[8].Str =
this->getFullSymbolName(*Symbol, SymIndex, ShndxTable, StrTable, true);
for (const Field &Entry : Fields)
printField(Entry);
OS << "\n";
}
template <class ELFT>
void GNUELFDumper<ELFT>::printSymbols(bool PrintSymbols,
bool PrintDynamicSymbols) {
if (!PrintSymbols && !PrintDynamicSymbols)
return;
// GNU readelf prints both the .dynsym and .symtab with --symbols.
this->printSymbolsHelper(true);
if (PrintSymbols)
this->printSymbolsHelper(false);
}
template <class ELFT>
void GNUELFDumper<ELFT>::printHashTableSymbols(const Elf_Hash &SysVHash) {
if (this->DynamicStringTable.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->dynamic_symbols();
const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0];
if (!FirstSym) {
this->reportUniqueWarning(
Twine("unable to print symbols for the .hash table: the "
"dynamic symbol table ") +
(this->DynSymRegion ? "is empty" : "was not found"));
return;
}
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
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]) {
this->reportUniqueWarning(".hash section is invalid: bucket " +
Twine(Ch) +
": a cycle was detected in the linked chain");
break;
}
printHashedSymbol(FirstSym + Ch, Ch, ShndxTable, this->DynamicStringTable,
Buc);
Visited[Ch] = true;
}
}
}
template <class ELFT>
void GNUELFDumper<ELFT>::printGnuHashTableSymbols(const Elf_GnuHash &GnuHash) {
if (this->DynamicStringTable.empty())
return;
Elf_Sym_Range DynSyms = this->dynamic_symbols();
const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0];
if (!FirstSym) {
this->reportUniqueWarning(
Twine("unable to print symbols for the .gnu.hash table: the "
"dynamic symbol table ") +
(this->DynSymRegion ? "is empty" : "was not found"));
return;
}
auto GetSymbol = [&](uint64_t SymIndex,
uint64_t SymsTotal) -> const Elf_Sym * {
if (SymIndex >= SymsTotal) {
this->reportUniqueWarning(
"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>(this->DynSymRegion, &GnuHash);
ArrayRef<Elf_Word> Values;
if (!ValuesOrErr)
this->reportUniqueWarning("unable to get hash values for the SHT_GNU_HASH "
"section: " +
toString(ValuesOrErr.takeError()));
else
Values = *ValuesOrErr;
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
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, ShndxTable, this->DynamicStringTable,
Buc);
else
break;
if (SymIndex < GnuHash.symndx) {
this->reportUniqueWarning(
"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 GNUELFDumper<ELFT>::printHashSymbols() {
if (this->HashTable) {
OS << "\n Symbol table of .hash for image:\n";
if (Error E = checkHashTable<ELFT>(*this, this->HashTable))
this->reportUniqueWarning(std::move(E));
else
printHashTableSymbols(*this->HashTable);
}
// Try printing the .gnu.hash table.
if (this->GnuHashTable) {
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, this->GnuHashTable))
this->reportUniqueWarning(std::move(E));
else
printGnuHashTableSymbols(*this->GnuHashTable);
}
}
template <class ELFT> void GNUELFDumper<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->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;
ListSeparator LS;
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())
OS << LS << It->second;
else
UnknownFlags |= Flag;
}
auto PrintUnknownFlags = [&](uint64_t Mask, StringRef Name) {
uint64_t FlagsToPrint = UnknownFlags & Mask;
if (!FlagsToPrint)
return;
OS << LS << Name << " ("
<< to_string(format_hex_no_prefix(FlagsToPrint, AddrSize)) << ")";
UnknownFlags &= ~Mask;
};
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 GNUELFDumper<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 GNUELFDumper<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("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) {
this->reportUniqueWarning(
"unable to read program interpreter name at offset 0x" +
Twine::utohexstr(Phdr.p_offset) + ": " + Msg);
};
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 GNUELFDumper<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(
"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 ELFDumper<ELFT> &Dumper,
const Relocation<ELFT> &Reloc) {
using Elf_Sym = typename ELFT::Sym;
auto WarnAndReturn = [&](const Elf_Sym *Sym,
const Twine &Reason) -> RelSymbol<ELFT> {
Dumper.reportUniqueWarning(
"unable to get name of the dynamic symbol with index " +
Twine(Reloc.Symbol) + ": " + Reason);
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 ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile();
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>
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 GNUELFDumper<ELFT>::printDynamicTable() {
Elf_Dyn_Range Table = this->dynamic_table();
if (Table.empty())
return;
OS << "Dynamic section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(this->DynamicTable.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->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 GNUELFDumper<ELFT>::printDynamicRelocations() {
this->printDynamicRelocationsHelper();
}
template <class ELFT>
void ELFDumper<ELFT>::printDynamicReloc(const Relocation<ELFT> &R) {
printRelRelaReloc(R, getSymbolForReloc(*this, R));
}
template <class ELFT>
void ELFDumper<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 ELFDumper<ELFT>::printDynamicRelocationsHelper() {
const bool IsMips64EL = this->Obj.isMips64EL();
if (this->DynRelaRegion.Size > 0) {
printDynamicRelocHeader(ELF::SHT_RELA, "RELA", this->DynRelaRegion);
for (const Elf_Rela &Rela :
this->DynRelaRegion.template getAsArrayRef<Elf_Rela>())
printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL));
}
if (this->DynRelRegion.Size > 0) {
printDynamicRelocHeader(ELF::SHT_REL, "REL", this->DynRelRegion);
for (const Elf_Rel &Rel :
this->DynRelRegion.template getAsArrayRef<Elf_Rel>())
printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
}
if (this->DynRelrRegion.Size > 0) {
printDynamicRelocHeader(ELF::SHT_REL, "RELR", this->DynRelrRegion);
Elf_Relr_Range Relrs =
this->DynRelrRegion.template getAsArrayRef<Elf_Relr>();
for (const Elf_Rel &Rel : Obj.decode_relrs(Relrs))
printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
}
if (this->DynPLTRelRegion.Size) {
if (this->DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) {
printDynamicRelocHeader(ELF::SHT_RELA, "PLT", this->DynPLTRelRegion);
for (const Elf_Rela &Rela :
this->DynPLTRelRegion.template getAsArrayRef<Elf_Rela>())
printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL));
} else {
printDynamicRelocHeader(ELF::SHT_REL, "PLT", this->DynPLTRelRegion);
for (const Elf_Rel &Rel :
this->DynPLTRelRegion.template getAsArrayRef<Elf_Rel>())
printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
}
}
}
template <class ELFT>
void GNUELFDumper<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("invalid section linked to " +
this->describe(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 GNUELFDumper<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->getVersionTable(*Sec, /*SymTab=*/nullptr,
/*StrTab=*/nullptr, /*SymTabSec=*/nullptr);
if (!VerTableOrErr) {
this->reportUniqueWarning(VerTableOrErr.takeError());
return;
}
SmallVector<Optional<VersionEntry>, 0> *VersionMap = nullptr;
if (Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr =
this->getVersionMap())
VersionMap = *MapOrErr;
else
this->reportUniqueWarning(MapOrErr.takeError());
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;
}
if (!VersionMap) {
Versions.emplace_back("<corrupt>");
continue;
}
bool IsDefault;
Expected<StringRef> NameOrErr = this->Obj.getSymbolVersionByIndex(
Ndx, IsDefault, *VersionMap, /*IsSymHidden=*/None);
if (!NameOrErr) {
this->reportUniqueWarning("unable to get a version for entry " +
Twine(I) + " of " + this->describe(*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 GNUELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) {
if (!Sec)
return;
printGNUVersionSectionProlog(*Sec, "Version definition", Sec->sh_info);
Expected<std::vector<VerDef>> V = this->Obj.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 GNUELFDumper<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->Obj.getVersionDependencies(*Sec, this->WarningHandler);
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 GNUELFDumper<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]) {
this->reportUniqueWarning(".hash section is invalid: bucket " +
Twine(C) +
": a cycle was detected in the linked chain");
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 GNUELFDumper<ELFT>::printGnuHashHistogram(
const Elf_GnuHash &GnuHashTable) {
Expected<ArrayRef<Elf_Word>> ChainsOrErr =
getGnuHashTableChains<ELFT>(this->DynSymRegion, &GnuHashTable);
if (!ChainsOrErr) {
this->reportUniqueWarning("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 GNUELFDumper<ELFT>::printHashHistograms() {
// Print histogram for the .hash section.
if (this->HashTable) {
if (Error E = checkHashTable<ELFT>(*this, this->HashTable))
this->reportUniqueWarning(std::move(E));
else
printHashHistogram(*this->HashTable);
}
// Print histogram for the .gnu.hash section.
if (this->GnuHashTable) {
if (Error E = checkGNUHashTable<ELFT>(this->Obj, this->GnuHashTable))
this->reportUniqueWarning(std::move(E));
else
printGnuHashHistogram(*this->GnuHashTable);
}
}
template <class ELFT> void GNUELFDumper<ELFT>::printCGProfile() {
OS << "GNUStyle::printCGProfile not implemented\n";
}
template <class ELFT> void GNUELFDumper<ELFT>::printBBAddrMaps() {
OS << "GNUStyle::printBBAddrMaps 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 GNUELFDumper<ELFT>::printAddrsig() {
if (!this->DotAddrsigSec)
return;
Expected<std::vector<uint64_t>> SymsOrErr =
decodeAddrsigSection(this->Obj, *this->DotAddrsigSec);
if (!SymsOrErr) {
this->reportUniqueWarning(SymsOrErr.takeError());
return;
}
StringRef Name = this->getPrintableSectionName(*this->DotAddrsigSec);
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->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_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();
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_BASELINE, "x86-64-baseline");
DumpBit(GNU_PROPERTY_X86_ISA_1_V2, "x86-64-v2");
DumpBit(GNU_PROPERTY_X86_ISA_1_V3, "x86-64-v3");
DumpBit(GNU_PROPERTY_X86_ISA_1_V4, "x86-64-v4");
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 bool printGNUNote(raw_ostream &OS, uint32_t NoteType,
ArrayRef<uint8_t> Desc) {
// Return true if we were able to pretty-print the note, false otherwise.
switch (NoteType) {
default:
return false;
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';
return true;
}
static const EnumEntry<unsigned> FreeBSDFeatureCtlFlags[] = {
{"ASLR_DISABLE", NT_FREEBSD_FCTL_ASLR_DISABLE},
{"PROTMAX_DISABLE", NT_FREEBSD_FCTL_PROTMAX_DISABLE},
{"STKGAP_DISABLE", NT_FREEBSD_FCTL_STKGAP_DISABLE},
{"WXNEEDED", NT_FREEBSD_FCTL_WXNEEDED},
{"LA48", NT_FREEBSD_FCTL_LA48},
{"ASG_DISABLE", NT_FREEBSD_FCTL_ASG_DISABLE},
};
struct FreeBSDNote {
std::string Type;
std::string Value;
};
template <typename ELFT>
static Optional<FreeBSDNote>
getFreeBSDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc, bool IsCore) {
if (IsCore)
return None; // No pretty-printing yet.
switch (NoteType) {
case ELF::NT_FREEBSD_ABI_TAG:
if (Desc.size() != 4)
return None;
return FreeBSDNote{
"ABI tag",
utostr(support::endian::read32<ELFT::TargetEndianness>(Desc.data()))};
case ELF::NT_FREEBSD_ARCH_TAG:
return FreeBSDNote{"Arch tag", toStringRef(Desc).str()};
case ELF::NT_FREEBSD_FEATURE_CTL: {
if (Desc.size() != 4)
return None;
unsigned Value =
support::endian::read32<ELFT::TargetEndianness>(Desc.data());
std::string FlagsStr;
raw_string_ostream OS(FlagsStr);
printFlags(Value, makeArrayRef(FreeBSDFeatureCtlFlags), OS);
if (OS.str().empty())
OS << "0x" << utohexstr(Value);
else
OS << "(0x" << utohexstr(Value) << ")";
return FreeBSDNote{"Feature flags", OS.str()};
}
default:
return None;
}
}
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_HSA_CODE_OBJECT_VERSION: {
struct CodeObjectVersion {
uint32_t MajorVersion;
uint32_t MinorVersion;
};
if (Desc.size() != sizeof(CodeObjectVersion))
return {"AMD HSA Code Object Version",
"Invalid AMD HSA Code Object Version"};
std::string VersionString;
raw_string_ostream StrOS(VersionString);
auto Version = reinterpret_cast<const CodeObjectVersion *>(Desc.data());
StrOS << "[Major: " << Version->MajorVersion
<< ", Minor: " << Version->MinorVersion << "]";
return {"AMD HSA Code Object Version", VersionString};
}
case ELF::NT_AMD_HSA_HSAIL: {
struct HSAILProperties {
uint32_t HSAILMajorVersion;
uint32_t HSAILMinorVersion;
uint8_t Profile;
uint8_t MachineModel;
uint8_t DefaultFloatRound;
};
if (Desc.size() != sizeof(HSAILProperties))
return {"AMD HSA HSAIL Properties", "Invalid AMD HSA HSAIL Properties"};
auto Properties = reinterpret_cast<const HSAILProperties *>(Desc.data());
std::string HSAILPropetiesString;
raw_string_ostream StrOS(HSAILPropetiesString);
StrOS << "[HSAIL Major: " << Properties->HSAILMajorVersion
<< ", HSAIL Minor: " << Properties->HSAILMinorVersion
<< ", Profile: " << uint32_t(Properties->Profile)
<< ", Machine Model: " << uint32_t(Properties->MachineModel)
<< ", Default Float Round: "
<< uint32_t(Properties->DefaultFloatRound) << "]";
return {"AMD HSA HSAIL Properties", HSAILPropetiesString};
}
case ELF::NT_AMD_HSA_ISA_VERSION: {
struct IsaVersion {
uint16_t VendorNameSize;
uint16_t ArchitectureNameSize;
uint32_t Major;
uint32_t Minor;
uint32_t Stepping;
};
if (Desc.size() < sizeof(IsaVersion))
return {"AMD HSA ISA Version", "Invalid AMD HSA ISA Version"};
auto Isa = reinterpret_cast<const IsaVersion *>(Desc.data());
if (Desc.size() < sizeof(IsaVersion) +
Isa->VendorNameSize + Isa->ArchitectureNameSize ||
Isa->VendorNameSize == 0 || Isa->ArchitectureNameSize == 0)
return {"AMD HSA ISA Version", "Invalid AMD HSA ISA Version"};
std::string IsaString;
raw_string_ostream StrOS(IsaString);
StrOS << "[Vendor: "
<< StringRef((const char*)Desc.data() + sizeof(IsaVersion), Isa->VendorNameSize - 1)
<< ", Architecture: "
<< StringRef((const char*)Desc.data() + sizeof(IsaVersion) + Isa->VendorNameSize,
Isa->ArchitectureNameSize - 1)
<< ", Major: " << Isa->Major << ", Minor: " << Isa->Minor
<< ", Stepping: " << Isa->Stepping << "]";
return {"AMD HSA ISA Version", IsaString};
}
case ELF::NT_AMD_HSA_METADATA: {
if (Desc.size() == 0)
return {"AMD HSA Metadata", ""};
return {
"AMD HSA Metadata",
std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size() - 1)};
}
case ELF::NT_AMD_HSA_ISA_NAME: {
if (Desc.size() == 0)
return {"AMD HSA ISA Name", ""};
return {
"AMD HSA ISA Name",
std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
}
case ELF::NT_AMD_PAL_METADATA: {
struct PALMetadata {
uint32_t Key;
uint32_t Value;
};
if (Desc.size() % sizeof(PALMetadata) != 0)
return {"AMD PAL Metadata", "Invalid AMD PAL Metadata"};
auto Isa = reinterpret_cast<const PALMetadata *>(Desc.data());
std::string MetadataString;
raw_string_ostream StrOS(MetadataString);
for (size_t I = 0, E = Desc.size() / sizeof(PALMetadata); I < E; ++I) {
StrOS << "[" << Isa[I].Key << ": " << Isa[I].Value << "]";
}
return {"AMD PAL Metadata", MetadataString};
}
}
}
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::HSAMD::V3::MetadataVerifier Verifier(true);
std::string MetadataString;
if (!Verifier.verify(MsgPackDoc.getRoot()))
MetadataString = "Invalid AMDGPU Metadata\n";
raw_string_ostream StrOS(MetadataString);
if (MsgPackDoc.getRoot().isScalar()) {
// TODO: passing a scalar root to toYAML() asserts:
// (PolymorphicTraits<T>::getKind(Val) != NodeKind::Scalar &&
// "plain scalar documents are not supported")
// To avoid this crash we print the raw data instead.
return {"", ""};
}
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 createError("the note of size 0x" + Twine::utohexstr(Desc.size()) +
" is too short, expected at least 0x" +
Twine::utohexstr(Bytes * 2));
if (Desc.getData().back() != 0)
return createError("the note is 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 createError("unable to read file mappings (found " +
Twine(FileCount) + "): the note of size 0x" +
Twine::utohexstr(Desc.size()) + " is too short");
uint64_t FilenamesOffset = 0;
DataExtractor Filenames(
Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes),
Desc.isLittleEndian(), Desc.getAddressSize());
Ret.Mappings.resize(FileCount);
size_t I = 0;
for (CoreFileMapping &Mapping : Ret.Mappings) {
++I;
if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1))
return createError(
"unable to read the file name for the mapping with index " +
Twine(I) + ": the note of size 0x" + Twine::utohexstr(Desc.size()) +
" is truncated");
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 FreeBSDCoreNoteTypes[] = {
{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 FreeBSDNoteTypes[] = {
{ELF::NT_FREEBSD_ABI_TAG, "NT_FREEBSD_ABI_TAG (ABI version tag)"},
{ELF::NT_FREEBSD_NOINIT_TAG, "NT_FREEBSD_NOINIT_TAG (no .init tag)"},
{ELF::NT_FREEBSD_ARCH_TAG, "NT_FREEBSD_ARCH_TAG (architecture tag)"},
{ELF::NT_FREEBSD_FEATURE_CTL,
"NT_FREEBSD_FEATURE_CTL (FreeBSD feature control)"},
};
static const NoteType AMDNoteTypes[] = {
{ELF::NT_AMD_HSA_CODE_OBJECT_VERSION,
"NT_AMD_HSA_CODE_OBJECT_VERSION (AMD HSA Code Object Version)"},
{ELF::NT_AMD_HSA_HSAIL, "NT_AMD_HSA_HSAIL (AMD HSA HSAIL Properties)"},
{ELF::NT_AMD_HSA_ISA_VERSION, "NT_AMD_HSA_ISA_VERSION (AMD HSA ISA Version)"},
{ELF::NT_AMD_HSA_METADATA, "NT_AMD_HSA_METADATA (AMD HSA Metadata)"},
{ELF::NT_AMD_HSA_ISA_NAME, "NT_AMD_HSA_ISA_NAME (AMD HSA ISA Name)"},
{ELF::NT_AMD_PAL_METADATA, "NT_AMD_PAL_METADATA (AMD 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>
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") {
if (ELFType == ELF::ET_CORE) {
// FreeBSD also places the generic core notes in the FreeBSD namespace.
StringRef Result = FindNote(FreeBSDCoreNoteTypes);
if (!Result.empty())
return Result;
return FindNote(CoreNoteTypes);
} else {
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<Error(const typename ELFT::Note &, bool)> ProcessNoteFn,
llvm::function_ref<void()> FinishNotesFn) {
const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile();
bool IsCoreFile = Obj.getHeader().e_type == ELF::ET_CORE;
ArrayRef<typename ELFT::Shdr> Sections = cantFail(Obj.sections());
if (!IsCoreFile && !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();
size_t I = 0;
for (const typename ELFT::Note Note : Obj.notes(S, Err)) {
if (Error E = ProcessNoteFn(Note, IsCoreFile))
Dumper.reportUniqueWarning(
"unable to read note with index " + Twine(I) + " from the " +
describe(Obj, S) + ": " + toString(std::move(E)));
++I;
}
if (Err)
Dumper.reportUniqueWarning("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(
"unable to read program headers to locate the PT_NOTE segment: " +
toString(PhdrsOrErr.takeError()));
return;
}
for (size_t I = 0, E = (*PhdrsOrErr).size(); I != E; ++I) {
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();
size_t Index = 0;
for (const typename ELFT::Note Note : Obj.notes(P, Err)) {
if (Error E = ProcessNoteFn(Note, IsCoreFile))
Dumper.reportUniqueWarning("unable to read note with index " +
Twine(Index) +
" from the PT_NOTE segment with index " +
Twine(I) + ": " + toString(std::move(E)));
++Index;
}
if (Err)
Dumper.reportUniqueWarning(
"unable to read notes from the PT_NOTE segment with index " +
Twine(I) + ": " + toString(std::move(Err)));
FinishNotesFn();
}
}
template <class ELFT> void GNUELFDumper<ELFT>::printNotes() {
bool IsFirstHeader = true;
auto PrintHeader = [&](Optional<StringRef> SecName,
const typename ELFT::Off Offset,
const typename ELFT::Addr Size) {
// Print a newline between notes sections to match GNU readelf.
if (!IsFirstHeader) {
OS << '\n';
} else {
IsFirstHeader = false;
}
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, bool IsCore) -> Error {
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 we fail to pretty-print the contents.
if (Name == "GNU") {
if (printGNUNote<ELFT>(OS, Type, Descriptor))
return Error::success();
} else if (Name == "FreeBSD") {
if (Optional<FreeBSDNote> N =
getFreeBSDNote<ELFT>(Type, Descriptor, IsCore)) {
OS << " " << N->Type << ": " << N->Value << '\n';
return Error::success();
}
} else if (Name == "AMD") {
const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
if (!N.Type.empty()) {
OS << " " << N.Type << ":\n " << N.Value << '\n';
return Error::success();
}
} else if (Name == "AMDGPU") {
const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
if (!N.Type.empty()) {
OS << " " << N.Type << ":\n " << N.Value << '\n';
return Error::success();
}
} else if (Name == "CORE") {
if (Type == ELF::NT_FILE) {
DataExtractor DescExtractor(Descriptor,
ELFT::TargetEndianness == support::little,
sizeof(Elf_Addr));
if (Expected<CoreNote> NoteOrErr = readCoreNote(DescExtractor)) {
printCoreNote<ELFT>(OS, *NoteOrErr);
return Error::success();
} else {
return NoteOrErr.takeError();
}
}
}
if (!Descriptor.empty()) {
OS << " description data:";
for (uint8_t B : Descriptor)
OS << " " << format("%02x", B);
OS << '\n';
}
return Error::success();
};
printNotesHelper(*this, PrintHeader, ProcessNote, []() {});
}
template <class ELFT> void GNUELFDumper<ELFT>::printELFLinkerOptions() {
OS << "printELFLinkerOptions not implemented!\n";
}
template <class ELFT>
void ELFDumper<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("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 ELFDumper<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(Prefix + " " + describe(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 ELFDumper<ELFT>::getPrintableSectionName(const Elf_Shdr &Sec) const {
StringRef Name = "<?>";
if (Expected<StringRef> SecNameOrErr =
Obj.getSectionName(Sec, this->WarningHandler))
Name = *SecNameOrErr;
else
this->reportUniqueWarning("unable to get the name of " + describe(Sec) +
": " + toString(SecNameOrErr.takeError()));
return Name;
}
template <class ELFT> void GNUELFDumper<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();
}
template <class ELFT>
SmallVector<uint32_t> ELFDumper<ELFT>::getSymbolIndexesForFunctionAddress(
uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec) {
SmallVector<uint32_t> SymbolIndexes;
if (!this->AddressToIndexMap.hasValue()) {
// Populate the address to index map upon the first invocation of this
// function.
this->AddressToIndexMap.emplace();
if (this->DotSymtabSec) {
if (Expected<Elf_Sym_Range> SymsOrError =
Obj.symbols(this->DotSymtabSec)) {
uint32_t Index = (uint32_t)-1;
for (const Elf_Sym &Sym : *SymsOrError) {
++Index;
if (Sym.st_shndx == ELF::SHN_UNDEF || Sym.getType() != ELF::STT_FUNC)
continue;
Expected<uint64_t> SymAddrOrErr =
ObjF.toSymbolRef(this->DotSymtabSec, Index).getAddress();
if (!SymAddrOrErr) {
std::string Name = this->getStaticSymbolName(Index);
reportUniqueWarning("unable to get address of symbol '" + Name +
"': " + toString(SymAddrOrErr.takeError()));
return SymbolIndexes;
}
(*this->AddressToIndexMap)[*SymAddrOrErr].push_back(Index);
}
} else {
reportUniqueWarning("unable to read the symbol table: " +
toString(SymsOrError.takeError()));
}
}
}
auto Symbols = this->AddressToIndexMap->find(SymValue);
if (Symbols == this->AddressToIndexMap->end())
return SymbolIndexes;
for (uint32_t Index : Symbols->second) {
// Check if the symbol is in the right section. FunctionSec == None
// means "any section".
if (FunctionSec) {
const Elf_Sym &Sym = *cantFail(Obj.getSymbol(this->DotSymtabSec, Index));
if (Expected<const Elf_Shdr *> SecOrErr =
Obj.getSection(Sym, this->DotSymtabSec,
this->getShndxTable(this->DotSymtabSec))) {
if (*FunctionSec != *SecOrErr)
continue;
} else {
std::string Name = this->getStaticSymbolName(Index);
// Note: it is impossible to trigger this error currently, it is
// untested.
reportUniqueWarning("unable to get section of symbol '" + Name +
"': " + toString(SecOrErr.takeError()));
return SymbolIndexes;
}
}
SymbolIndexes.push_back(Index);
}
return SymbolIndexes;
}
template <class ELFT>
bool ELFDumper<ELFT>::printFunctionStackSize(
uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec,
const Elf_Shdr &StackSizeSec, DataExtractor Data, uint64_t *Offset) {
SmallVector<uint32_t> FuncSymIndexes =
this->getSymbolIndexesForFunctionAddress(SymValue, FunctionSec);
if (FuncSymIndexes.empty())
reportUniqueWarning(
"could not identify function symbol for stack size entry in " +
describe(StackSizeSec));
// Extract the size. The expectation is that Offset is pointing to the right
// place, i.e. past the function address.
Error Err = Error::success();
uint64_t StackSize = Data.getULEB128(Offset, &Err);
if (Err) {
reportUniqueWarning("could not extract a valid stack size from " +
describe(StackSizeSec) + ": " +
toString(std::move(Err)));
return false;
}
if (FuncSymIndexes.empty()) {
printStackSizeEntry(StackSize, {"?"});
} else {
SmallVector<std::string> FuncSymNames;
for (uint32_t Index : FuncSymIndexes)
FuncSymNames.push_back(this->getStaticSymbolName(Index));
printStackSizeEntry(StackSize, FuncSymNames);
}
return true;
}
template <class ELFT>
void GNUELFDumper<ELFT>::printStackSizeEntry(uint64_t Size,
ArrayRef<std::string> FuncNames) {
OS.PadToColumn(2);
OS << format_decimal(Size, 11);
OS.PadToColumn(18);
OS << join(FuncNames.begin(), FuncNames.end(), ", ") << "\n";
}
template <class ELFT>
void ELFDumper<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->getRelocationTarget(R, SymTab);
if (!TargetOrErr)
reportUniqueWarning("unable to get the target of relocation with index " +
Twine(Ndx) + " in " + describe(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->getShndxTable(SymTab));
if (!SectionOrErr) {
reportUniqueWarning(
"cannot identify the section for relocation symbol '" +
(*TargetOrErr).Name + "': " + toString(SectionOrErr.takeError()));
} else if (*SectionOrErr != FunctionSec) {
reportUniqueWarning("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("found invalid relocation offset (0x" +
Twine::utohexstr(Offset) + ") into " +
describe(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 ELFDumper<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(
describe(Sec) +
" ended while trying to extract a stack size entry");
break;
}
uint64_t SymValue = Data.getAddress(&Offset);
if (!printFunctionStackSize(SymValue, /*FunctionSec=*/None, Sec, Data,
&Offset))
break;
}
}
}
template <class ELFT>
void ELFDumper<ELFT>::getSectionAndRelocations(
std::function<bool(const Elf_Shdr &)> IsMatch,
llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> &SecToRelocMap) {
for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
if (IsMatch(Sec))
if (SecToRelocMap.insert(std::make_pair(&Sec, (const Elf_Shdr *)nullptr))
.second)
continue;
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(describe(Sec) +
": failed to get a relocated section: " +
toString(RelSecOrErr.takeError()));
continue;
}
const Elf_Shdr *ContentsSec = *RelSecOrErr;
if (IsMatch(*ContentsSec))
SecToRelocMap[ContentsSec] = &Sec;
}
}
template <class ELFT>
void ELFDumper<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;
auto IsMatch = [&](const Elf_Shdr &Sec) -> bool {
StringRef SectionName;
if (Expected<StringRef> NameOrErr = Obj.getSectionName(Sec))
SectionName = *NameOrErr;
else
consumeError(NameOrErr.takeError());
return SectionName == ".stack_sizes";
};
getSectionAndRelocations(IsMatch, StackSizeRelocMap);
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(*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(this->ObjF);
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(
describe(*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 GNUELFDumper<ELFT>::printStackSizes() {
bool HeaderHasBeenPrinted = false;
auto PrintHeader = [&]() {
if (HeaderHasBeenPrinted)
return;
OS << "\nStack Sizes:\n";
OS.PadToColumn(9);
OS << "Size";
OS.PadToColumn(18);
OS << "Functions\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 GNUELFDumper<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";
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
for (auto &E : Parser.getGlobalEntries()) {
const Elf_Sym &Sym = *Parser.getGotSym(&E);
const Elf_Sym &FirstSym = this->dynamic_symbols()[0];
std::string SymName = this->getFullSymbolName(
Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, 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->dynamic_symbols().begin(),
ShndxTable);
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 GNUELFDumper<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";
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
for (auto &E : Parser.getPltEntries()) {
const Elf_Sym &Sym = *Parser.getPltSym(&E);
const Elf_Sym &FirstSym = *cantFail(
this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0));
std::string SymName = this->getFullSymbolName(
Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, 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->dynamic_symbols().begin(),
ShndxTable);
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 GNUELFDumper<ELFT>::printMipsABIFlags() {
const Elf_Mips_ABIFlags<ELFT> *Flags = nullptr;
if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr =
getMipsAbiFlagsSection(*this))
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 LLVMELFDumper<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));
}
std::string TypeStr;
if (const EnumEntry<unsigned> *Ent = getObjectFileEnumEntry(E.e_type)) {
TypeStr = Ent->Name.str();
} else {
if (E.e_type >= ET_LOPROC)
TypeStr = "Processor Specific";
else if (E.e_type >= ET_LOOS)
TypeStr = "OS Specific";
else
TypeStr = "Unknown";
}
W.printString("Type", TypeStr + " (0x" + to_hexString(E.e_type) + ")");
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) {
switch (E.e_ident[ELF::EI_ABIVERSION]) {
default:
W.printHex("Flags", E.e_flags);
break;
case 0:
// ELFOSABI_AMDGPU_PAL, ELFOSABI_AMDGPU_MESA3D support *_V3 flags.
LLVM_FALLTHROUGH;
case ELF::ELFABIVERSION_AMDGPU_HSA_V3:
W.printFlags("Flags", E.e_flags,
makeArrayRef(ElfHeaderAMDGPUFlagsABIVersion3),
unsigned(ELF::EF_AMDGPU_MACH));
break;
case ELF::ELFABIVERSION_AMDGPU_HSA_V4:
W.printFlags("Flags", E.e_flags,
makeArrayRef(ElfHeaderAMDGPUFlagsABIVersion4),
unsigned(ELF::EF_AMDGPU_MACH),
unsigned(ELF::EF_AMDGPU_FEATURE_XNACK_V4),
unsigned(ELF::EF_AMDGPU_FEATURE_SRAMECC_V4));
break;
}
} else if (E.e_machine == EM_RISCV)
W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderRISCVFlags));
else if (E.e_machine == EM_AVR)
W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderAVRFlags),
unsigned(ELF::EF_AVR_ARCH_MASK));
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 LLVMELFDumper<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(
"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 LLVMELFDumper<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 LLVMELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) {
W.startLine() << W.hex(R) << "\n";
}
template <class ELFT>
void LLVMELFDumper<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R,
const RelSymbol<ELFT> &RelSym) {
StringRef SymbolName = RelSym.Name;
SmallString<32> RelocName;
this->Obj.getRelocationTypeName(R.Type, RelocName);
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);
if (R.Addend)
W.printHex("Addend", (uintX_t)*R.Addend);
} else {
raw_ostream &OS = W.startLine();
OS << W.hex(R.Offset) << " " << RelocName << " "
<< (!SymbolName.empty() ? SymbolName : "-");
if (R.Addend)
OS << " " << W.hex((uintX_t)*R.Addend);
OS << "\n";
}
}
template <class ELFT> void LLVMELFDumper<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 (this->DotSymtabSec) {
StringRef StrTable = unwrapOrError(
this->FileName,
this->Obj.getStringTableForSymtab(*this->DotSymtabSec));
ArrayRef<Elf_Word> ShndxTable = this->getShndxTable(this->DotSymtabSec);
typename ELFT::SymRange Symbols = unwrapOrError(
this->FileName, this->Obj.symbols(this->DotSymtabSec));
for (const Elf_Sym &Sym : Symbols) {
const Elf_Shdr *SymSec = unwrapOrError(
this->FileName,
this->Obj.getSection(Sym, this->DotSymtabSec, ShndxTable));
if (SymSec == &Sec)
printSymbol(Sym, &Sym - &Symbols[0], ShndxTable, 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 LLVMELFDumper<ELFT>::printSymbolSection(
const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable) const {
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->getSymbolSectionIndex(Symbol, SymIndex, ShndxTable);
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->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->ObjF.sections().empty())
this->reportUniqueWarning(SectionName.takeError());
else
consumeError(SectionName.takeError());
W.printHex("Section", "<?>", *SectionIndex);
} else {
W.printHex("Section", *SectionName, *SectionIndex);
}
}
template <class ELFT>
void LLVMELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
DataRegion<Elf_Word> ShndxTable,
Optional<StringRef> StrTable,
bool IsDynamic,
bool /*NonVisibilityBitsUsed*/) const {
std::string FullSymbolName = this->getFullSymbolName(
Symbol, SymIndex, ShndxTable, 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));
} else if (this->Obj.getHeader().e_machine == EM_AARCH64) {
SymOtherFlags.insert(SymOtherFlags.end(),
std::begin(ElfAArch64SymOtherFlags),
std::end(ElfAArch64SymOtherFlags));
}
W.printFlags("Other", Symbol.st_other, makeArrayRef(SymOtherFlags), 0x3u);
}
printSymbolSection(Symbol, SymIndex, ShndxTable);
}
template <class ELFT>
void LLVMELFDumper<ELFT>::printSymbols(bool PrintSymbols,
bool PrintDynamicSymbols) {
if (PrintSymbols) {
ListScope Group(W, "Symbols");
this->printSymbolsHelper(false);
}
if (PrintDynamicSymbols) {
ListScope Group(W, "DynamicSymbols");
this->printSymbolsHelper(true);
}
}
template <class ELFT> void LLVMELFDumper<ELFT>::printDynamicTable() {
Elf_Dyn_Range Table = this->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->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 LLVMELFDumper<ELFT>::printDynamicRelocations() {
W.startLine() << "Dynamic Relocations {\n";
W.indent();
this->printDynamicRelocationsHelper();
W.unindent();
W.startLine() << "}\n";
}
template <class ELFT>
void LLVMELFDumper<ELFT>::printProgramHeaders(
bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
if (PrintProgramHeaders)
printProgramHeaders();
if (PrintSectionMapping == cl::BOU_TRUE)
printSectionMapping();
}
template <class ELFT> void LLVMELFDumper<ELFT>::printProgramHeaders() {
ListScope L(W, "ProgramHeaders");
Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers();
if (!PhdrsOrErr) {
this->reportUniqueWarning("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 LLVMELFDumper<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) {
ListScope SS(W, "VersionSymbols");
if (!Sec)
return;
StringRef StrTable;
ArrayRef<Elf_Sym> Syms;
const Elf_Shdr *SymTabSec;
Expected<ArrayRef<Elf_Versym>> VerTableOrErr =
this->getVersionTable(*Sec, &Syms, &StrTable, &SymTabSec);
if (!VerTableOrErr) {
this->reportUniqueWarning(VerTableOrErr.takeError());
return;
}
if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size())
return;
ArrayRef<Elf_Word> ShNdxTable = this->getShndxTable(SymTabSec);
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->getFullSymbolName(Syms[I], I, ShNdxTable, 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 LLVMELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) {
ListScope SD(W, "VersionDefinitions");
if (!Sec)
return;
Expected<std::vector<VerDef>> V = this->Obj.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 LLVMELFDumper<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) {
ListScope SD(W, "VersionRequirements");
if (!Sec)
return;
Expected<std::vector<VerNeed>> V =
this->Obj.getVersionDependencies(*Sec, this->WarningHandler);
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 LLVMELFDumper<ELFT>::printHashHistograms() {
W.startLine() << "Hash Histogram not implemented!\n";
}
// Returns true if rel/rela section exists, and populates SymbolIndices.
// Otherwise returns false.
template <class ELFT>
static bool getSymbolIndices(const typename ELFT::Shdr *CGRelSection,
const ELFFile<ELFT> &Obj,
const LLVMELFDumper<ELFT> *Dumper,
SmallVector<uint32_t, 128> &SymbolIndices) {
if (!CGRelSection) {
Dumper->reportUniqueWarning(
"relocation section for a call graph section doesn't exist");
return false;
}
if (CGRelSection->sh_type == SHT_REL) {
typename ELFT::RelRange CGProfileRel;
Expected<typename ELFT::RelRange> CGProfileRelOrError =
Obj.rels(*CGRelSection);
if (!CGProfileRelOrError) {
Dumper->reportUniqueWarning("unable to load relocations for "
"SHT_LLVM_CALL_GRAPH_PROFILE section: " +
toString(CGProfileRelOrError.takeError()));
return false;
}
CGProfileRel = *CGProfileRelOrError;
for (const typename ELFT::Rel &Rel : CGProfileRel)
SymbolIndices.push_back(Rel.getSymbol(Obj.isMips64EL()));
} else {
// MC unconditionally produces SHT_REL, but GNU strip/objcopy may convert
// the format to SHT_RELA
// (https://sourceware.org/bugzilla/show_bug.cgi?id=28035)
typename ELFT::RelaRange CGProfileRela;
Expected<typename ELFT::RelaRange> CGProfileRelaOrError =
Obj.relas(*CGRelSection);
if (!CGProfileRelaOrError) {
Dumper->reportUniqueWarning("unable to load relocations for "
"SHT_LLVM_CALL_GRAPH_PROFILE section: " +
toString(CGProfileRelaOrError.takeError()));
return false;
}
CGProfileRela = *CGProfileRelaOrError;
for (const typename ELFT::Rela &Rela : CGProfileRela)
SymbolIndices.push_back(Rela.getSymbol(Obj.isMips64EL()));
}
return true;
}
template <class ELFT> void LLVMELFDumper<ELFT>::printCGProfile() {
llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> SecToRelocMap;
auto IsMatch = [](const Elf_Shdr &Sec) -> bool {
return Sec.sh_type == ELF::SHT_LLVM_CALL_GRAPH_PROFILE;
};
this->getSectionAndRelocations(IsMatch, SecToRelocMap);
for (const auto &CGMapEntry : SecToRelocMap) {
const Elf_Shdr *CGSection = CGMapEntry.first;
const Elf_Shdr *CGRelSection = CGMapEntry.second;
Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr =
this->Obj.template getSectionContentsAsArray<Elf_CGProfile>(*CGSection);
if (!CGProfileOrErr) {
this->reportUniqueWarning(
"unable to load the SHT_LLVM_CALL_GRAPH_PROFILE section: " +
toString(CGProfileOrErr.takeError()));
return;
}
SmallVector<uint32_t, 128> SymbolIndices;
bool UseReloc =
getSymbolIndices<ELFT>(CGRelSection, this->Obj, this, SymbolIndices);
if (UseReloc && SymbolIndices.size() != CGProfileOrErr->size() * 2) {
this->reportUniqueWarning(
"number of from/to pairs does not match number of frequencies");
UseReloc = false;
}
ListScope L(W, "CGProfile");
for (uint32_t I = 0, Size = CGProfileOrErr->size(); I != Size; ++I) {
const Elf_CGProfile &CGPE = (*CGProfileOrErr)[I];
DictScope D(W, "CGProfileEntry");
if (UseReloc) {
uint32_t From = SymbolIndices[I * 2];
uint32_t To = SymbolIndices[I * 2 + 1];
W.printNumber("From", this->getStaticSymbolName(From), From);
W.printNumber("To", this->getStaticSymbolName(To), To);
}
W.printNumber("Weight", CGPE.cgp_weight);
}
}
}
template <class ELFT> void LLVMELFDumper<ELFT>::printBBAddrMaps() {
bool IsRelocatable = this->Obj.getHeader().e_type == ELF::ET_REL;
for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
if (Sec.sh_type != SHT_LLVM_BB_ADDR_MAP)
continue;
Optional<const Elf_Shdr *> FunctionSec = None;
if (IsRelocatable)
FunctionSec =
unwrapOrError(this->FileName, this->Obj.getSection(Sec.sh_link));
ListScope L(W, "BBAddrMap");
Expected<std::vector<Elf_BBAddrMap>> BBAddrMapOrErr =
this->Obj.decodeBBAddrMap(Sec);
if (!BBAddrMapOrErr) {
this->reportUniqueWarning("unable to dump " + this->describe(Sec) + ": " +
toString(BBAddrMapOrErr.takeError()));
continue;
}
for (const Elf_BBAddrMap &AM : *BBAddrMapOrErr) {
DictScope D(W, "Function");
W.printHex("At", AM.Addr);
SmallVector<uint32_t> FuncSymIndex =
this->getSymbolIndexesForFunctionAddress(AM.Addr, FunctionSec);
std::string FuncName = "<?>";
if (FuncSymIndex.empty())
this->reportUniqueWarning(
"could not identify function symbol for address (0x" +
Twine::utohexstr(AM.Addr) + ") in " + this->describe(Sec));
else
FuncName = this->getStaticSymbolName(FuncSymIndex.front());
W.printString("Name", FuncName);
ListScope L(W, "BB entries");
for (const typename Elf_BBAddrMap::BBEntry &BBE : AM.BBEntries) {
DictScope L(W);
W.printHex("Offset", BBE.Offset);
W.printHex("Size", BBE.Size);
W.printBoolean("HasReturn", BBE.HasReturn);
W.printBoolean("HasTailCall", BBE.HasTailCall);
W.printBoolean("IsEHPad", BBE.IsEHPad);
W.printBoolean("CanFallThrough", BBE.CanFallThrough);
}
}
}
}
template <class ELFT> void LLVMELFDumper<ELFT>::printAddrsig() {
ListScope L(W, "Addrsig");
if (!this->DotAddrsigSec)
return;
Expected<std::vector<uint64_t>> SymsOrErr =
decodeAddrsigSection(this->Obj, *this->DotAddrsigSec);
if (!SymsOrErr) {
this->reportUniqueWarning(SymsOrErr.takeError());
return;
}
for (uint64_t Sym : *SymsOrErr)
W.printNumber("Sym", this->getStaticSymbolName(Sym), Sym);
}
template <typename ELFT>
static bool printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc,
ScopedPrinter &W) {
// Return true if we were able to pretty-print the note, false otherwise.
switch (NoteType) {
default:
return false;
case ELF::NT_GNU_ABI_TAG: {
const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
if (!AbiTag.IsValid) {
W.printString("ABI", "<corrupt GNU_ABI_TAG>");
return false;
} 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;
}
return true;
}
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 LLVMELFDumper<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, bool IsCore) -> Error {
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 we fail to pretty-print the contents.
if (Name == "GNU") {
if (printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W))
return Error::success();
} else if (Name == "FreeBSD") {
if (Optional<FreeBSDNote> N =
getFreeBSDNote<ELFT>(Type, Descriptor, IsCore)) {
W.printString(N->Type, N->Value);
return Error::success();
}
} else if (Name == "AMD") {
const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
if (!N.Type.empty()) {
W.printString(N.Type, N.Value);
return Error::success();
}
} else if (Name == "AMDGPU") {
const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
if (!N.Type.empty()) {
W.printString(N.Type, N.Value);
return Error::success();
}
} else if (Name == "CORE") {
if (Type == ELF::NT_FILE) {
DataExtractor DescExtractor(Descriptor,
ELFT::TargetEndianness == support::little,
sizeof(Elf_Addr));
if (Expected<CoreNote> N = readCoreNote(DescExtractor)) {
printCoreNoteLLVMStyle(*N, W);
return Error::success();
} else {
return N.takeError();
}
}
}
if (!Descriptor.empty()) {
W.printBinaryBlock("Description data", Descriptor);
}
return Error::success();
};
printNotesHelper(*this, StartNotes, ProcessNote, EndNotes);
}
template <class ELFT> void LLVMELFDumper<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("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("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(
"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 LLVMELFDumper<ELFT>::printDependentLibs() {
ListScope L(W, "DependentLibs");
this->printDependentLibsHelper(
[](const Elf_Shdr &) {},
[this](StringRef Lib, uint64_t) { W.printString(Lib); });
}
template <class ELFT> void LLVMELFDumper<ELFT>::printStackSizes() {
ListScope L(W, "StackSizes");
if (this->Obj.getHeader().e_type == ELF::ET_REL)
this->printRelocatableStackSizes([]() {});
else
this->printNonRelocatableStackSizes([]() {});
}
template <class ELFT>
void LLVMELFDumper<ELFT>::printStackSizeEntry(uint64_t Size,
ArrayRef<std::string> FuncNames) {
DictScope D(W, "Entry");
W.printList("Functions", FuncNames);
W.printHex("Size", Size);
}
template <class ELFT>
void LLVMELFDumper<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->dynamic_symbols().begin();
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
printSymbolSection(Sym, SymIndex, ShndxTable);
std::string SymName = this->getFullSymbolName(
Sym, SymIndex, ShndxTable, this->DynamicStringTable, 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 LLVMELFDumper<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");
DataRegion<Elf_Word> ShndxTable(
(const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
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->dynamic_symbols().begin(),
ShndxTable);
const Elf_Sym *FirstSym = cantFail(
this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0));
std::string SymName = this->getFullSymbolName(
Sym, &Sym - FirstSym, ShndxTable, Parser.getPltStrTable(), true);
W.printNumber("Name", SymName, Sym.st_name);
}
}
}
template <class ELFT> void LLVMELFDumper<ELFT>::printMipsABIFlags() {
const Elf_Mips_ABIFlags<ELFT> *Flags;
if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr =
getMipsAbiFlagsSection(*this)) {
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);
}
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