RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-26 12:43:36 +01:00
Code Issues Projects Releases Wiki Activity
b213574568
llvm-mirror/tools/llvm-readobj/ELFDumper.cpp
George Rimar f9d10cdb6f [llvm-readelf] - Allow dumping of the .dynamic section even if there is no PT_DYNAMIC header. 
It is now possible after D61937 was landed and was discussed
in it's review comments. It is not consistent with GNU, which
does not output .dynamic section content in this case for
no visible reason.

Differential revision: https://reviews.llvm.org/D62179

llvm-svn: 361943
2019-05-29 10:31:46 +00:00

5031 lines
180 KiB
C++
Raw Blame History

//===- 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 "Error.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/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/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/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 }
#define LLVM_READOBJ_PHDR_ENUM(ns, enum) \
case ns::enum: \
return std::string(#enum).substr(3);
#define TYPEDEF_ELF_TYPES(ELFT) \
using ELFO = ELFFile<ELFT>; \
using Elf_Addr = typename ELFT::Addr; \
using Elf_Shdr = typename ELFT::Shdr; \
using Elf_Sym = typename ELFT::Sym; \
using Elf_Dyn = typename ELFT::Dyn; \
using Elf_Dyn_Range = typename ELFT::DynRange; \
using Elf_Rel = typename ELFT::Rel; \
using Elf_Rela = typename ELFT::Rela; \
using Elf_Relr = typename ELFT::Relr; \
using Elf_Rel_Range = typename ELFT::RelRange; \
using Elf_Rela_Range = typename ELFT::RelaRange; \
using Elf_Relr_Range = typename ELFT::RelrRange; \
using Elf_Phdr = typename ELFT::Phdr; \
using Elf_Half = typename ELFT::Half; \
using Elf_Ehdr = typename ELFT::Ehdr; \
using Elf_Word = typename ELFT::Word; \
using Elf_Hash = typename ELFT::Hash; \
using Elf_GnuHash = typename ELFT::GnuHash; \
using Elf_Note = typename ELFT::Note; \
using Elf_Sym_Range = typename ELFT::SymRange; \
using Elf_Versym = typename ELFT::Versym; \
using Elf_Verneed = typename ELFT::Verneed; \
using Elf_Vernaux = typename ELFT::Vernaux; \
using Elf_Verdef = typename ELFT::Verdef; \
using Elf_Verdaux = typename ELFT::Verdaux; \
using Elf_CGProfile = typename ELFT::CGProfile; \
using uintX_t = typename ELFT::uint;
namespace {
template <class ELFT> class DumpStyle;
/// 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() = default;
DynRegionInfo(const void *A, uint64_t S, uint64_t ES)
: Addr(A), Size(S), EntSize(ES) {}
/// Address in current address space.
const void *Addr = nullptr;
/// Size in bytes of the region.
uint64_t Size = 0;
/// Size of each entity in the region.
uint64_t EntSize = 0;
template <typename Type> ArrayRef<Type> getAsArrayRef() const {
const Type *Start = reinterpret_cast<const Type *>(Addr);
if (!Start)
return {Start, Start};
if (EntSize != sizeof(Type) || Size % EntSize)
reportError("Invalid entity size");
return {Start, Start + (Size / EntSize)};
}
};
template <typename ELFT> class ELFDumper : public ObjDumper {
public:
ELFDumper(const object::ELFObjectFile<ELFT> *ObjF, ScopedPrinter &Writer);
void printFileHeaders() override;
void printSectionHeaders() override;
void printRelocations() override;
void printDynamicRelocations() override;
void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
void printHashSymbols() override;
void printUnwindInfo() override;
void printDynamicTable() override;
void printNeededLibraries() override;
void printProgramHeaders(bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) override;
void printHashTable() override;
void printGnuHashTable() override;
void printLoadName() override;
void printVersionInfo() override;
void printGroupSections() override;
void printAttributes() override;
void printMipsPLTGOT() override;
void printMipsABIFlags() override;
void printMipsReginfo() override;
void printMipsOptions() override;
void printStackMap() const override;
void printHashHistogram() override;
void printCGProfile() override;
void printAddrsig() override;
void printNotes() override;
void printELFLinkerOptions() override;
private:
std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle;
TYPEDEF_ELF_TYPES(ELFT)
DynRegionInfo checkDRI(DynRegionInfo DRI) {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
if (DRI.Addr < Obj->base() ||
reinterpret_cast<const uint8_t *>(DRI.Addr) + DRI.Size >
Obj->base() + Obj->getBufSize())
error(llvm::object::object_error::parse_failed);
return DRI;
}
DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) {
return checkDRI(
{ObjF->getELFFile()->base() + P->p_offset, P->p_filesz, EntSize});
}
DynRegionInfo createDRIFrom(const Elf_Shdr *S) {
return checkDRI(
{ObjF->getELFFile()->base() + S->sh_offset, S->sh_size, S->sh_entsize});
}
void loadDynamicTable(const ELFFile<ELFT> *Obj);
void parseDynamicTable();
StringRef getDynamicString(uint64_t Offset) const;
StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb,
bool &IsDefault) const;
void LoadVersionMap() const;
void LoadVersionNeeds(const Elf_Shdr *ec) const;
void LoadVersionDefs(const Elf_Shdr *sec) const;
const object::ELFObjectFile<ELFT> *ObjF;
DynRegionInfo DynRelRegion;
DynRegionInfo DynRelaRegion;
DynRegionInfo DynRelrRegion;
DynRegionInfo DynPLTRelRegion;
DynRegionInfo DynSymRegion;
DynRegionInfo DynamicTable;
StringRef DynamicStringTable;
StringRef SOName;
const Elf_Hash *HashTable = nullptr;
const Elf_GnuHash *GnuHashTable = nullptr;
const Elf_Shdr *DotSymtabSec = nullptr;
const Elf_Shdr *DotCGProfileSec = nullptr;
const Elf_Shdr *DotAddrsigSec = nullptr;
StringRef DynSymtabName;
ArrayRef<Elf_Word> ShndxTable;
const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version
const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r
const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d
// Records for each version index the corresponding Verdef or Vernaux entry.
// This is filled the first time LoadVersionMap() is called.
class VersionMapEntry : public PointerIntPair<const void *, 1> {
public:
// If the integer is 0, this is an Elf_Verdef*.
// If the integer is 1, this is an Elf_Vernaux*.
VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {}
VersionMapEntry(const Elf_Verdef *verdef)
: PointerIntPair<const void *, 1>(verdef, 0) {}
VersionMapEntry(const Elf_Vernaux *vernaux)
: PointerIntPair<const void *, 1>(vernaux, 1) {}
bool isNull() const { return getPointer() == nullptr; }
bool isVerdef() const { return !isNull() && getInt() == 0; }
bool isVernaux() const { return !isNull() && getInt() == 1; }
const Elf_Verdef *getVerdef() const {
return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr;
}
const Elf_Vernaux *getVernaux() const {
return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr;
}
};
mutable SmallVector<VersionMapEntry, 16> VersionMap;
public:
Elf_Dyn_Range dynamic_table() const {
// A valid .dynamic section contains an array of entries terminated
// with a DT_NULL entry. However, sometimes the section content may
// continue past the DT_NULL entry, so to dump the section correctly,
// we first find the end of the entries by iterating over them.
Elf_Dyn_Range Table = DynamicTable.getAsArrayRef<Elf_Dyn>();
size_t Size = 0;
while (Size < Table.size())
if (Table[Size++].getTag() == DT_NULL)
break;
return Table.slice(0, Size);
}
Elf_Sym_Range dynamic_symbols() const {
return DynSymRegion.getAsArrayRef<Elf_Sym>();
}
Elf_Rel_Range dyn_rels() const;
Elf_Rela_Range dyn_relas() const;
Elf_Relr_Range dyn_relrs() const;
std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable,
bool IsDynamic) const;
void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym,
StringRef &SectionName,
unsigned &SectionIndex) const;
std::string getStaticSymbolName(uint32_t Index) const;
StringRef getSymbolVersionByIndex(StringRef StrTab,
uint32_t VersionSymbolIndex,
bool &IsDefault) const;
void printSymbolsHelper(bool IsDynamic) const;
void printDynamicEntry(raw_ostream &OS, uint64_t Type, uint64_t Value) const;
const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; }
const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; }
const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; }
ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; }
StringRef getDynamicStringTable() const { return DynamicStringTable; }
const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; }
const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; }
const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; }
const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; }
const DynRegionInfo &getDynamicTableRegion() const { return DynamicTable; }
const Elf_Hash *getHashTable() const { return HashTable; }
const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; }
};
template <class ELFT>
void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const {
StringRef StrTable, SymtabName;
size_t Entries = 0;
Elf_Sym_Range Syms(nullptr, nullptr);
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
if (IsDynamic) {
StrTable = DynamicStringTable;
Syms = dynamic_symbols();
SymtabName = DynSymtabName;
if (DynSymRegion.Addr)
Entries = DynSymRegion.Size / DynSymRegion.EntSize;
} else {
if (!DotSymtabSec)
return;
StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec));
Syms = unwrapOrError(Obj->symbols(DotSymtabSec));
SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec));
Entries = DotSymtabSec->getEntityCount();
}
if (Syms.begin() == Syms.end())
return;
ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries);
for (const auto &Sym : Syms)
ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic);
}
template <class ELFT> class MipsGOTParser;
template <typename ELFT> class DumpStyle {
public:
using Elf_Shdr = typename ELFT::Shdr;
using Elf_Sym = typename ELFT::Sym;
DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {}
virtual ~DumpStyle() = default;
virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0;
virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0;
virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0;
virtual void printSectionHeaders(const ELFFile<ELFT> *Obj) = 0;
virtual void printSymbols(const ELFFile<ELFT> *Obj, bool PrintSymbols,
bool PrintDynamicSymbols) = 0;
virtual void printHashSymbols(const ELFFile<ELFT> *Obj) {}
virtual void printDynamic(const ELFFile<ELFT> *Obj) {}
virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0;
virtual void printSymtabMessage(const ELFFile<ELFT> *Obj, StringRef Name,
size_t Offset) {}
virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol,
const Elf_Sym *FirstSym, StringRef StrTable,
bool IsDynamic) = 0;
virtual void printProgramHeaders(const ELFFile<ELFT> *Obj,
bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) = 0;
virtual void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) = 0;
virtual void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) = 0;
virtual void printVersionDependencySection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) = 0;
virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0;
virtual void printCGProfile(const ELFFile<ELFT> *Obj) = 0;
virtual void printAddrsig(const ELFFile<ELFT> *Obj) = 0;
virtual void printNotes(const ELFFile<ELFT> *Obj) = 0;
virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0;
virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
const ELFDumper<ELFT> *dumper() const { return Dumper; }
private:
const ELFDumper<ELFT> *Dumper;
};
template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> {
formatted_raw_ostream OS;
public:
TYPEDEF_ELF_TYPES(ELFT)
GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
: DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {}
void printFileHeaders(const ELFO *Obj) override;
void printGroupSections(const ELFFile<ELFT> *Obj) override;
void printRelocations(const ELFO *Obj) override;
void printSectionHeaders(const ELFO *Obj) override;
void printSymbols(const ELFO *Obj, bool PrintSymbols,
bool PrintDynamicSymbols) override;
void printHashSymbols(const ELFO *Obj) override;
void printDynamic(const ELFFile<ELFT> *Obj) override;
void printDynamicRelocations(const ELFO *Obj) override;
void printSymtabMessage(const ELFO *Obj, StringRef Name,
size_t Offset) override;
void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) override;
void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printVersionDependencySection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printHashHistogram(const ELFFile<ELFT> *Obj) override;
void printCGProfile(const ELFFile<ELFT> *Obj) override;
void printAddrsig(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
private:
struct Field {
std::string Str;
unsigned Column;
Field(StringRef S, unsigned Col) : Str(S), Column(Col) {}
Field(unsigned Col) : Column(Col) {}
};
template <typename T, typename TEnum>
std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) {
for (const auto &EnumItem : EnumValues)
if (EnumItem.Value == Value)
return EnumItem.AltName;
return to_hexString(Value, false);
}
template <typename T, typename TEnum>
std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues,
TEnum EnumMask1 = {}, TEnum EnumMask2 = {},
TEnum EnumMask3 = {}) {
std::string Str;
for (const auto &Flag : EnumValues) {
if (Flag.Value == 0)
continue;
TEnum EnumMask{};
if (Flag.Value & EnumMask1)
EnumMask = EnumMask1;
else if (Flag.Value & EnumMask2)
EnumMask = EnumMask2;
else if (Flag.Value & EnumMask3)
EnumMask = EnumMask3;
bool IsEnum = (Flag.Value & EnumMask) != 0;
if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
(IsEnum && (Value & EnumMask) == Flag.Value)) {
if (!Str.empty())
Str += ", ";
Str += Flag.AltName;
}
}
return Str;
}
formatted_raw_ostream &printField(struct Field F) {
if (F.Column != 0)
OS.PadToColumn(F.Column);
OS << F.Str;
OS.flush();
return OS;
}
void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym,
StringRef StrTable, uint32_t Bucket);
void printRelocHeader(unsigned SType);
void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
const Elf_Rela &R, bool IsRela);
void printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
StringRef SymbolName, const Elf_Rela &R, bool IsRela);
void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
StringRef StrTable, bool IsDynamic) override;
std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol,
const Elf_Sym *FirstSym);
void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela);
bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
void printProgramHeaders(const ELFO *Obj);
void printSectionMapping(const ELFO *Obj);
};
template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> {
public:
TYPEDEF_ELF_TYPES(ELFT)
LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
: DumpStyle<ELFT>(Dumper), W(W) {}
void printFileHeaders(const ELFO *Obj) override;
void printGroupSections(const ELFFile<ELFT> *Obj) override;
void printRelocations(const ELFO *Obj) override;
void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj);
void printSectionHeaders(const ELFO *Obj) override;
void printSymbols(const ELFO *Obj, bool PrintSymbols,
bool PrintDynamicSymbols) override;
void printDynamic(const ELFFile<ELFT> *Obj) override;
void printDynamicRelocations(const ELFO *Obj) override;
void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) override;
void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printVersionDependencySection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) override;
void printHashHistogram(const ELFFile<ELFT> *Obj) override;
void printCGProfile(const ELFFile<ELFT> *Obj) override;
void printAddrsig(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
private:
void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab);
void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel);
void printSymbols(const ELFO *Obj);
void printDynamicSymbols(const ELFO *Obj);
void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
StringRef StrTable, bool IsDynamic) override;
void printProgramHeaders(const ELFO *Obj);
void printSectionMapping(const ELFO *Obj) {}
ScopedPrinter &W;
};
} // end anonymous namespace
namespace llvm {
template <class ELFT>
static std::error_code createELFDumper(const ELFObjectFile<ELFT> *Obj,
ScopedPrinter &Writer,
std::unique_ptr<ObjDumper> &Result) {
Result.reset(new ELFDumper<ELFT>(Obj, Writer));
return readobj_error::success;
}
std::error_code createELFDumper(const object::ObjectFile *Obj,
ScopedPrinter &Writer,
std::unique_ptr<ObjDumper> &Result) {
// Little-endian 32-bit
if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
return createELFDumper(ELFObj, Writer, Result);
// Big-endian 32-bit
if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
return createELFDumper(ELFObj, Writer, Result);
// Little-endian 64-bit
if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
return createELFDumper(ELFObj, Writer, Result);
// Big-endian 64-bit
if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
return createELFDumper(ELFObj, Writer, Result);
return readobj_error::unsupported_obj_file_format;
}
} // end namespace llvm
// Iterate through the versions needed section, and place each Elf_Vernaux
// in the VersionMap according to its index.
template <class ELFT>
void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *Sec) const {
unsigned VerneedSize = Sec->sh_size; // Size of section in bytes
unsigned VerneedEntries = Sec->sh_info; // Number of Verneed entries
const uint8_t *VerneedStart = reinterpret_cast<const uint8_t *>(
ObjF->getELFFile()->base() + Sec->sh_offset);
const uint8_t *VerneedEnd = VerneedStart + VerneedSize;
// The first Verneed entry is at the start of the section.
const uint8_t *VerneedBuf = VerneedStart;
for (unsigned VerneedIndex = 0; VerneedIndex < VerneedEntries;
++VerneedIndex) {
if (VerneedBuf + sizeof(Elf_Verneed) > VerneedEnd)
report_fatal_error("Section ended unexpectedly while scanning "
"version needed records.");
const Elf_Verneed *Verneed =
reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
if (Verneed->vn_version != ELF::VER_NEED_CURRENT)
report_fatal_error("Unexpected verneed version");
// Iterate through the Vernaux entries
const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
for (unsigned VernauxIndex = 0; VernauxIndex < Verneed->vn_cnt;
++VernauxIndex) {
if (VernauxBuf + sizeof(Elf_Vernaux) > VerneedEnd)
report_fatal_error("Section ended unexpected while scanning auxiliary "
"version needed records.");
const Elf_Vernaux *Vernaux =
reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
size_t Index = Vernaux->vna_other & ELF::VERSYM_VERSION;
if (Index >= VersionMap.size())
VersionMap.resize(Index + 1);
VersionMap[Index] = VersionMapEntry(Vernaux);
VernauxBuf += Vernaux->vna_next;
}
VerneedBuf += Verneed->vn_next;
}
}
// Iterate through the version definitions, and place each Elf_Verdef
// in the VersionMap according to its index.
template <class ELFT>
void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *Sec) const {
unsigned VerdefSize = Sec->sh_size; // Size of section in bytes
unsigned VerdefEntries = Sec->sh_info; // Number of Verdef entries
const uint8_t *VerdefStart = reinterpret_cast<const uint8_t *>(
ObjF->getELFFile()->base() + Sec->sh_offset);
const uint8_t *VerdefEnd = VerdefStart + VerdefSize;
// The first Verdef entry is at the start of the section.
const uint8_t *VerdefBuf = VerdefStart;
for (unsigned VerdefIndex = 0; VerdefIndex < VerdefEntries; ++VerdefIndex) {
if (VerdefBuf + sizeof(Elf_Verdef) > VerdefEnd)
report_fatal_error("Section ended unexpectedly while scanning "
"version definitions.");
const Elf_Verdef *Verdef = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
if (Verdef->vd_version != ELF::VER_DEF_CURRENT)
report_fatal_error("Unexpected verdef version");
size_t Index = Verdef->vd_ndx & ELF::VERSYM_VERSION;
if (Index >= VersionMap.size())
VersionMap.resize(Index + 1);
VersionMap[Index] = VersionMapEntry(Verdef);
VerdefBuf += Verdef->vd_next;
}
}
template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const {
// If there is no dynamic symtab or version table, there is nothing to do.
if (!DynSymRegion.Addr || !SymbolVersionSection)
return;
// Has the VersionMap already been loaded?
if (!VersionMap.empty())
return;
// The first two version indexes are reserved.
// Index 0 is LOCAL, index 1 is GLOBAL.
VersionMap.push_back(VersionMapEntry());
VersionMap.push_back(VersionMapEntry());
if (SymbolVersionDefSection)
LoadVersionDefs(SymbolVersionDefSection);
if (SymbolVersionNeedSection)
LoadVersionNeeds(SymbolVersionNeedSection);
}
template <typename ELFT>
StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab,
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 "";
}
// 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.
const Elf_Versym *Versym =
unwrapOrError(ObjF->getELFFile()->template getEntry<Elf_Versym>(
SymbolVersionSection, EntryIndex));
return this->getSymbolVersionByIndex(StrTab, Versym->vs_index, IsDefault);
}
static std::string maybeDemangle(StringRef Name) {
return opts::Demangle ? demangle(Name) : Name.str();
}
template <typename ELFT>
std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
StringRef StrTable =
unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec));
Elf_Sym_Range Syms = unwrapOrError(Obj->symbols(DotSymtabSec));
if (Index >= Syms.size())
reportError("Invalid symbol index");
const Elf_Sym *Sym = &Syms[Index];
return maybeDemangle(unwrapOrError(Sym->getName(StrTable)));
}
template <typename ELFT>
StringRef ELFDumper<ELFT>::getSymbolVersionByIndex(StringRef StrTab,
uint32_t SymbolVersionIndex,
bool &IsDefault) const {
size_t VersionIndex = SymbolVersionIndex & VERSYM_VERSION;
// Special markers for unversioned symbols.
if (VersionIndex == VER_NDX_LOCAL || VersionIndex == VER_NDX_GLOBAL) {
IsDefault = false;
return "";
}
// Lookup this symbol in the version table.
LoadVersionMap();
if (VersionIndex >= VersionMap.size() || VersionMap[VersionIndex].isNull())
reportError("Invalid version entry");
const VersionMapEntry &Entry = VersionMap[VersionIndex];
// Get the version name string.
size_t NameOffset;
if (Entry.isVerdef()) {
// The first Verdaux entry holds the name.
NameOffset = Entry.getVerdef()->getAux()->vda_name;
IsDefault = !(SymbolVersionIndex & VERSYM_HIDDEN);
} else {
NameOffset = Entry.getVernaux()->vna_name;
IsDefault = false;
}
if (NameOffset >= StrTab.size())
reportError("Invalid string offset");
return StrTab.data() + NameOffset;
}
template <typename ELFT>
std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol,
StringRef StrTable,
bool IsDynamic) const {
std::string SymbolName =
maybeDemangle(unwrapOrError(Symbol->getName(StrTable)));
if (SymbolName.empty() && Symbol->getType() == ELF::STT_SECTION) {
unsigned SectionIndex;
StringRef SectionName;
Elf_Sym_Range Syms =
unwrapOrError(ObjF->getELFFile()->symbols(DotSymtabSec));
getSectionNameIndex(Symbol, Syms.begin(), SectionName, SectionIndex);
return SectionName;
}
if (!IsDynamic)
return SymbolName;
bool IsDefault;
StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault);
if (!Version.empty()) {
SymbolName += (IsDefault ? "@@" : "@");
SymbolName += Version;
}
return SymbolName;
}
template <typename ELFT>
void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol,
const Elf_Sym *FirstSym,
StringRef &SectionName,
unsigned &SectionIndex) const {
SectionIndex = Symbol->st_shndx;
if (Symbol->isUndefined())
SectionName = "Undefined";
else if (Symbol->isProcessorSpecific())
SectionName = "Processor Specific";
else if (Symbol->isOSSpecific())
SectionName = "Operating System Specific";
else if (Symbol->isAbsolute())
SectionName = "Absolute";
else if (Symbol->isCommon())
SectionName = "Common";
else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX)
SectionName = "Reserved";
else {
if (SectionIndex == SHN_XINDEX)
SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>(
Symbol, FirstSym, ShndxTable));
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
const typename ELFT::Shdr *Sec =
unwrapOrError(Obj->getSection(SectionIndex));
SectionName = unwrapOrError(Obj->getSectionName(Sec));
}
}
template <class ELFO>
static const typename ELFO::Elf_Shdr *
findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) {
for (const auto &Shdr : unwrapOrError(Obj->sections()))
if (Shdr.sh_addr == Addr && Shdr.sh_size > 0)
return &Shdr;
return nullptr;
}
template <class ELFO>
static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj,
StringRef Name) {
for (const auto &Shdr : unwrapOrError(Obj.sections())) {
if (Name == unwrapOrError(Obj.getSectionName(&Shdr)))
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> SymVersionFlags[] = {
{"Base", "BASE", VER_FLG_BASE},
{"Weak", "WEAK", VER_FLG_WEAK},
{"Info", "INFO", VER_FLG_INFO}};
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"),
ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"),
ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"),
ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"),
ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"),
ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"),
ENUM_ENT(EM_RX, "Renesas RX"),
ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"),
ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"),
ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"),
ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"),
ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"),
ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"),
ENUM_ENT(EM_L10M, "EM_L10M"),
ENUM_ENT(EM_K10M, "EM_K10M"),
ENUM_ENT(EM_AARCH64, "AArch64"),
ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"),
ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"),
ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"),
ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"),
ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"),
ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"),
ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"),
ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"),
ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"),
ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"),
ENUM_ENT(EM_OPEN8, "EM_OPEN8"),
ENUM_ENT(EM_RL78, "Renesas RL78"),
ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"),
ENUM_ENT(EM_78KOR, "EM_78KOR"),
ENUM_ENT(EM_56800EX, "EM_56800EX"),
ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"),
ENUM_ENT(EM_RISCV, "RISC-V"),
ENUM_ENT(EM_LANAI, "EM_LANAI"),
ENUM_ENT(EM_BPF, "EM_BPF"),
};
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_EXCLUDE, "E"),
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_MASKOS, "o"),
ENUM_ENT(SHF_MASKPROC, "p"),
ENUM_ENT_1(SHF_COMPRESSED),
};
static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION)
};
static const EnumEntry<unsigned> ElfARMSectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE)
};
static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL)
};
static const EnumEntry<unsigned> ElfMipsSectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING )
};
static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE)
};
static std::string getGNUFlags(uint64_t Flags) {
std::string Str;
for (auto Entry : ElfSectionFlags) {
uint64_t Flag = Entry.Value & Flags;
Flags &= ~Entry.Value;
switch (Flag) {
case ELF::SHF_WRITE:
case ELF::SHF_ALLOC:
case ELF::SHF_EXECINSTR:
case ELF::SHF_MERGE:
case ELF::SHF_STRINGS:
case ELF::SHF_INFO_LINK:
case ELF::SHF_LINK_ORDER:
case ELF::SHF_OS_NONCONFORMING:
case ELF::SHF_GROUP:
case ELF::SHF_TLS:
case ELF::SHF_EXCLUDE:
Str += Entry.AltName;
break;
default:
if (Flag & ELF::SHF_MASKOS)
Str += "o";
else if (Flag & ELF::SHF_MASKPROC)
Str += "p";
else if (Flag)
Str += "x";
}
}
return Str;
}
static const char *getElfSegmentType(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_OPENBSD_RANDOMIZE);
LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED);
LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA);
default:
return "";
}
}
static std::string getElfPtType(unsigned Arch, unsigned Type) {
switch (Type) {
LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK)
LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO)
default:
// All machine specific PT_* types
switch (Arch) {
case ELF::EM_ARM:
if (Type == ELF::PT_ARM_EXIDX)
return "EXIDX";
break;
case ELF::EM_MIPS:
case ELF::EM_MIPS_RS3_LE:
switch (Type) {
case PT_MIPS_REGINFO:
return "REGINFO";
case PT_MIPS_RTPROC:
return "RTPROC";
case PT_MIPS_OPTIONS:
return "OPTIONS";
case PT_MIPS_ABIFLAGS:
return "ABIFLAGS";
}
break;
}
}
return std::string("<unknown>: ") + to_string(format_hex(Type, 1));
}
static const EnumEntry<unsigned> ElfSegmentFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
};
static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"),
ENUM_ENT(EF_MIPS_PIC, "pic"),
ENUM_ENT(EF_MIPS_CPIC, "cpic"),
ENUM_ENT(EF_MIPS_ABI2, "abi2"),
ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"),
ENUM_ENT(EF_MIPS_FP64, "fp64"),
ENUM_ENT(EF_MIPS_NAN2008, "nan2008"),
ENUM_ENT(EF_MIPS_ABI_O32, "o32"),
ENUM_ENT(EF_MIPS_ABI_O64, "o64"),
ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"),
ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"),
ENUM_ENT(EF_MIPS_MACH_3900, "3900"),
ENUM_ENT(EF_MIPS_MACH_4010, "4010"),
ENUM_ENT(EF_MIPS_MACH_4100, "4100"),
ENUM_ENT(EF_MIPS_MACH_4650, "4650"),
ENUM_ENT(EF_MIPS_MACH_4120, "4120"),
ENUM_ENT(EF_MIPS_MACH_4111, "4111"),
ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"),
ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"),
ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"),
ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"),
ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"),
ENUM_ENT(EF_MIPS_MACH_5400, "5400"),
ENUM_ENT(EF_MIPS_MACH_5900, "5900"),
ENUM_ENT(EF_MIPS_MACH_5500, "5500"),
ENUM_ENT(EF_MIPS_MACH_9000, "9000"),
ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"),
ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"),
ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"),
ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"),
ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"),
ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"),
ENUM_ENT(EF_MIPS_ARCH_1, "mips1"),
ENUM_ENT(EF_MIPS_ARCH_2, "mips2"),
ENUM_ENT(EF_MIPS_ARCH_3, "mips3"),
ENUM_ENT(EF_MIPS_ARCH_4, "mips4"),
ENUM_ENT(EF_MIPS_ARCH_5, "mips5"),
ENUM_ENT(EF_MIPS_ARCH_32, "mips32"),
ENUM_ENT(EF_MIPS_ARCH_64, "mips64"),
ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"),
ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"),
ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"),
ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6")
};
static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_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_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_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_GFX909),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC)
};
static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = {
ENUM_ENT(EF_RISCV_RVC, "RVC"),
ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"),
ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"),
ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"),
ENUM_ENT(EF_RISCV_RVE, "RVE")
};
static const EnumEntry<unsigned> ElfSymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL),
LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN),
LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED)
};
static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS)
};
static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16)
};
static const char *getElfMipsOptionsOdkType(unsigned Odk) {
switch (Odk) {
LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE);
default:
return "Unknown";
}
}
template <typename ELFT>
void ELFDumper<ELFT>::loadDynamicTable(const ELFFile<ELFT> *Obj) {
// Try to locate the PT_DYNAMIC header.
const Elf_Phdr *DynamicPhdr = nullptr;
for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) {
if (Phdr.p_type != ELF::PT_DYNAMIC)
continue;
DynamicPhdr = &Phdr;
break;
}
// Try to locate the .dynamic section in the sections header table.
const Elf_Shdr *DynamicSec = nullptr;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (Sec.sh_type != ELF::SHT_DYNAMIC)
continue;
DynamicSec = &Sec;
break;
}
// Information in the section header has priority over the information
// in a PT_DYNAMIC header.
// Ignore sh_entsize and use the expected value for entry size explicitly.
// This allows us to dump the dynamic sections with a broken sh_entsize
// field.
if (DynamicSec) {
DynamicTable = checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset,
DynamicSec->sh_size, sizeof(Elf_Dyn)});
parseDynamicTable();
}
// If we have a PT_DYNAMIC header, we will either check the found dynamic
// section or take the dynamic table data directly from the header.
if (!DynamicPhdr)
return;
if (DynamicPhdr->p_offset + DynamicPhdr->p_filesz >
ObjF->getMemoryBufferRef().getBufferSize())
reportError(
"PT_DYNAMIC segment offset + size exceeds the size of the file");
if (!DynamicSec) {
DynamicTable = createDRIFrom(DynamicPhdr, sizeof(Elf_Dyn));
parseDynamicTable();
return;
}
StringRef Name = unwrapOrError(Obj->getSectionName(DynamicSec));
if (DynamicSec->sh_addr + DynamicSec->sh_size >
DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz ||
DynamicSec->sh_addr < DynamicPhdr->p_vaddr)
reportWarning("The SHT_DYNAMIC section '" + Name +
"' is not contained within the "
"PT_DYNAMIC segment");
if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
reportWarning("The SHT_DYNAMIC section '" + Name +
"' is not at the start of "
"PT_DYNAMIC segment");
}
template <typename ELFT>
ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> *ObjF,
ScopedPrinter &Writer)
: ObjDumper(Writer), ObjF(ObjF) {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
switch (Sec.sh_type) {
case ELF::SHT_SYMTAB:
if (!DotSymtabSec)
DotSymtabSec = &Sec;
break;
case ELF::SHT_DYNSYM:
if (!DynSymRegion.Size) {
DynSymRegion = createDRIFrom(&Sec);
// This is only used (if Elf_Shdr present)for naming section in GNU
// style
DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec));
DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec));
}
break;
case ELF::SHT_SYMTAB_SHNDX:
ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec));
break;
case ELF::SHT_GNU_versym:
if (!SymbolVersionSection)
SymbolVersionSection = &Sec;
break;
case ELF::SHT_GNU_verdef:
if (!SymbolVersionDefSection)
SymbolVersionDefSection = &Sec;
break;
case ELF::SHT_GNU_verneed:
if (!SymbolVersionNeedSection)
SymbolVersionNeedSection = &Sec;
break;
case ELF::SHT_LLVM_CALL_GRAPH_PROFILE:
if (!DotCGProfileSec)
DotCGProfileSec = &Sec;
break;
case ELF::SHT_LLVM_ADDRSIG:
if (!DotAddrsigSec)
DotAddrsigSec = &Sec;
break;
}
}
loadDynamicTable(Obj);
if (opts::Output == opts::GNU)
ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this));
else
ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this));
}
static const char *getTypeString(unsigned Arch, uint64_t Type) {
#define DYNAMIC_TAG(n, v)
switch (Arch) {
case EM_HEXAGON:
switch (Type) {
#define HEXAGON_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef HEXAGON_DYNAMIC_TAG
}
break;
case EM_MIPS:
switch (Type) {
#define MIPS_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef MIPS_DYNAMIC_TAG
}
break;
case EM_PPC64:
switch (Type) {
#define PPC64_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef PPC64_DYNAMIC_TAG
}
break;
}
#undef DYNAMIC_TAG
switch (Type) {
// Now handle all dynamic tags except the architecture specific ones
#define MIPS_DYNAMIC_TAG(name, value)
#define HEXAGON_DYNAMIC_TAG(name, value)
#define PPC64_DYNAMIC_TAG(name, value)
// Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc.
#define DYNAMIC_TAG_MARKER(name, value)
#define DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef DYNAMIC_TAG
#undef MIPS_DYNAMIC_TAG
#undef HEXAGON_DYNAMIC_TAG
#undef PPC64_DYNAMIC_TAG
#undef DYNAMIC_TAG_MARKER
default:
return "unknown";
}
}
template <typename ELFT> void ELFDumper<ELFT>::parseDynamicTable() {
auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * {
auto MappedAddrOrError = ObjF->getELFFile()->toMappedAddr(VAddr);
if (!MappedAddrOrError) {
reportWarning("Unable to parse DT_" +
Twine(getTypeString(
ObjF->getELFFile()->getHeader()->e_machine, Tag)) +
": " + llvm::toString(MappedAddrOrError.takeError()));
return nullptr;
}
return MappedAddrOrError.get();
};
uint64_t SONameOffset = 0;
const char *StringTableBegin = nullptr;
uint64_t StringTableSize = 0;
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:
DynSymRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
DynSymRegion.EntSize = sizeof(Elf_Sym);
break;
case ELF::DT_RELA:
DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
break;
case ELF::DT_RELASZ:
DynRelaRegion.Size = Dyn.getVal();
break;
case ELF::DT_RELAENT:
DynRelaRegion.EntSize = Dyn.getVal();
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();
break;
case ELF::DT_RELENT:
DynRelRegion.EntSize = Dyn.getVal();
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();
break;
case ELF::DT_RELRENT:
case ELF::DT_ANDROID_RELRENT:
DynRelrRegion.EntSize = Dyn.getVal();
break;
case ELF::DT_PLTREL:
if (Dyn.getVal() == DT_REL)
DynPLTRelRegion.EntSize = sizeof(Elf_Rel);
else if (Dyn.getVal() == DT_RELA)
DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
else
reportError(Twine("unknown DT_PLTREL value of ") +
Twine((uint64_t)Dyn.getVal()));
break;
case ELF::DT_JMPREL:
DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
break;
case ELF::DT_PLTRELSZ:
DynPLTRelRegion.Size = Dyn.getVal();
break;
}
}
if (StringTableBegin)
DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
if (SONameOffset)
SOName = getDynamicString(SONameOffset);
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const {
return DynRelRegion.getAsArrayRef<Elf_Rel>();
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const {
return DynRelaRegion.getAsArrayRef<Elf_Rela>();
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const {
return DynRelrRegion.getAsArrayRef<Elf_Relr>();
}
template <class ELFT> void ELFDumper<ELFT>::printFileHeaders() {
ELFDumperStyle->printFileHeaders(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printSectionHeaders() {
ELFDumperStyle->printSectionHeaders(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printRelocations() {
ELFDumperStyle->printRelocations(ObjF->getELFFile());
}
template <class ELFT>
void ELFDumper<ELFT>::printProgramHeaders(
bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
ELFDumperStyle->printProgramHeaders(ObjF->getELFFile(), PrintProgramHeaders,
PrintSectionMapping);
}
template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() {
// Dump version symbol section.
ELFDumperStyle->printVersionSymbolSection(ObjF->getELFFile(),
SymbolVersionSection);
// Dump version definition section.
ELFDumperStyle->printVersionDefinitionSection(ObjF->getELFFile(),
SymbolVersionDefSection);
// Dump version dependency section.
ELFDumperStyle->printVersionDependencySection(ObjF->getELFFile(),
SymbolVersionNeedSection);
}
template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() {
ELFDumperStyle->printDynamicRelocations(ObjF->getELFFile());
}
template <class ELFT>
void ELFDumper<ELFT>::printSymbols(bool PrintSymbols,
bool PrintDynamicSymbols) {
ELFDumperStyle->printSymbols(ObjF->getELFFile(), PrintSymbols,
PrintDynamicSymbols);
}
template <class ELFT> void ELFDumper<ELFT>::printHashSymbols() {
ELFDumperStyle->printHashSymbols(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() {
ELFDumperStyle->printHashHistogram(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printCGProfile() {
ELFDumperStyle->printCGProfile(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printNotes() {
ELFDumperStyle->printNotes(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() {
ELFDumperStyle->printELFLinkerOptions(ObjF->getELFFile());
}
#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)
};
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) {
using FlagEntry = EnumEntry<TFlag>;
using FlagVector = SmallVector<FlagEntry, 10>;
FlagVector SetFlags;
for (const auto &Flag : Flags) {
if (Flag.Value == 0)
continue;
if ((Value & Flag.Value) == Flag.Value)
SetFlags.push_back(Flag);
}
for (const auto &Flag : SetFlags) {
OS << Flag.Name << " ";
}
}
template <class ELFT>
StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const {
if (Value >= DynamicStringTable.size())
reportError("Invalid dynamic string table reference");
return StringRef(DynamicStringTable.data() + Value);
}
static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) {
OS << Tag << ": [" << Name << "]";
}
template <class ELFT>
void ELFDumper<ELFT>::printDynamicEntry(raw_ostream &OS, uint64_t Type,
uint64_t Value) const {
const char *ConvChar =
(opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64;
switch (Type) {
case DT_PLTREL:
if (Value == DT_REL) {
OS << "REL";
break;
} else if (Value == DT_RELA) {
OS << "RELA";
break;
}
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:
case DT_MIPS_BASE_ADDRESS:
case DT_MIPS_GOTSYM:
case DT_MIPS_RLD_MAP:
case DT_MIPS_RLD_MAP_REL:
case DT_MIPS_PLTGOT:
case DT_MIPS_OPTIONS:
OS << format(ConvChar, Value);
break;
case DT_RELACOUNT:
case DT_RELCOUNT:
case DT_VERDEFNUM:
case DT_VERNEEDNUM:
case DT_MIPS_RLD_VERSION:
case DT_MIPS_LOCAL_GOTNO:
case DT_MIPS_SYMTABNO:
case DT_MIPS_UNREFEXTNO:
OS << Value;
break;
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:
OS << Value << " (bytes)";
break;
case DT_NEEDED:
printLibrary(OS, "Shared library", getDynamicString(Value));
break;
case DT_SONAME:
printLibrary(OS, "Library soname", getDynamicString(Value));
break;
case DT_AUXILIARY:
printLibrary(OS, "Auxiliary library", getDynamicString(Value));
break;
case DT_USED:
printLibrary(OS, "Not needed object", getDynamicString(Value));
break;
case DT_FILTER:
printLibrary(OS, "Filter library", getDynamicString(Value));
break;
case DT_RPATH:
case DT_RUNPATH:
OS << getDynamicString(Value);
break;
case DT_MIPS_FLAGS:
printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
break;
case DT_FLAGS:
printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
break;
case DT_FLAGS_1:
printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS);
break;
default:
OS << format(ConvChar, Value);
break;
}
}
template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() {
DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF);
Ctx.printUnwindInformation();
}
namespace {
template <> void ELFDumper<ELF32LE>::printUnwindInfo() {
const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
const unsigned Machine = Obj->getHeader()->e_machine;
if (Machine == EM_ARM) {
ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, DotSymtabSec);
Ctx.PrintUnwindInformation();
}
DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF);
Ctx.printUnwindInformation();
}
} // end anonymous namespace
template <class ELFT> void ELFDumper<ELFT>::printDynamicTable() {
ELFDumperStyle->printDynamic(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() {
ListScope D(W, "NeededLibraries");
using LibsTy = std::vector<StringRef>;
LibsTy Libs;
for (const auto &Entry : dynamic_table())
if (Entry.d_tag == ELF::DT_NEEDED)
Libs.push_back(getDynamicString(Entry.d_un.d_val));
llvm::stable_sort(Libs);
for (const auto &L : Libs)
W.startLine() << L << "\n";
}
template <typename ELFT> void ELFDumper<ELFT>::printHashTable() {
DictScope D(W, "HashTable");
if (!HashTable)
return;
W.printNumber("Num Buckets", HashTable->nbucket);
W.printNumber("Num Chains", HashTable->nchain);
W.printList("Buckets", HashTable->buckets());
W.printList("Chains", HashTable->chains());
}
template <typename ELFT> void ELFDumper<ELFT>::printGnuHashTable() {
DictScope D(W, "GnuHashTable");
if (!GnuHashTable)
return;
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);
W.printHexList("Bloom Filter", GnuHashTable->filter());
W.printList("Buckets", GnuHashTable->buckets());
Elf_Sym_Range Syms = dynamic_symbols();
unsigned NumSyms = std::distance(Syms.begin(), Syms.end());
if (!NumSyms)
reportError("No dynamic symbol section");
W.printHexList("Values", GnuHashTable->values(NumSyms));
}
template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
W.printString("LoadName", SOName);
}
template <class ELFT> void ELFDumper<ELFT>::printAttributes() {
W.startLine() << "Attributes not implemented.\n";
}
namespace {
template <> void ELFDumper<ELF32LE>::printAttributes() {
const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
if (Obj->getHeader()->e_machine != EM_ARM) {
W.startLine() << "Attributes not implemented.\n";
return;
}
DictScope BA(W, "BuildAttributes");
for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES)
continue;
ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec));
if (Contents[0] != ARMBuildAttrs::Format_Version) {
errs() << "unrecognised FormatVersion: 0x"
<< Twine::utohexstr(Contents[0]) << '\n';
continue;
}
W.printHex("FormatVersion", Contents[0]);
if (Contents.size() == 1)
continue;
ARMAttributeParser(&W).Parse(Contents, true);
}
}
template <class ELFT> class MipsGOTParser {
public:
TYPEDEF_ELF_TYPES(ELFT)
using Entry = typename ELFO::Elf_Addr;
using Entries = ArrayRef<Entry>;
const bool IsStatic;
const ELFO * const Obj;
MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms);
bool hasGot() const { return !GotEntries.empty(); }
bool hasPlt() 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; }
private:
const Elf_Shdr *GotSec;
size_t LocalNum;
size_t GlobalNum;
const Elf_Shdr *PltSec;
const Elf_Shdr *PltRelSec;
const Elf_Shdr *PltSymTable;
Elf_Sym_Range GotDynSyms;
StringRef PltStrTable;
Entries GotEntries;
Entries PltEntries;
};
} // end anonymous namespace
template <class ELFT>
MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable,
Elf_Sym_Range DynSyms)
: IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0),
GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr) {
// 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 = findSectionByName(*Obj, ".got");
if (!GotSec)
reportError("Cannot find .got section");
ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec));
GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
Content.size() / sizeof(Entry));
LocalNum = GotEntries.size();
return;
}
// Lookup dynamic table tags which define GOT/PLT layouts.
Optional<uint64_t> DtPltGot;
Optional<uint64_t> DtLocalGotNum;
Optional<uint64_t> DtGotSym;
Optional<uint64_t> DtMipsPltGot;
Optional<uint64_t> DtJmpRel;
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;
case ELF::DT_MIPS_PLTGOT:
DtMipsPltGot = Entry.getVal();
break;
case ELF::DT_JMPREL:
DtJmpRel = Entry.getVal();
break;
}
}
// Find dynamic GOT section.
if (DtPltGot || DtLocalGotNum || DtGotSym) {
if (!DtPltGot)
report_fatal_error("Cannot find PLTGOT dynamic table tag.");
if (!DtLocalGotNum)
report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag.");
if (!DtGotSym)
report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag.");
size_t DynSymTotal = DynSyms.size();
if (*DtGotSym > DynSymTotal)
reportError("MIPS_GOTSYM exceeds a number of dynamic symbols");
GotSec = findNotEmptySectionByAddress(Obj, *DtPltGot);
if (!GotSec)
reportError("There is no not empty GOT section at 0x" +
Twine::utohexstr(*DtPltGot));
LocalNum = *DtLocalGotNum;
GlobalNum = DynSymTotal - *DtGotSym;
ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec));
GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
Content.size() / sizeof(Entry));
GotDynSyms = DynSyms.drop_front(*DtGotSym);
}
// Find PLT section.
if (DtMipsPltGot || DtJmpRel) {
if (!DtMipsPltGot)
report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag.");
if (!DtJmpRel)
report_fatal_error("Cannot find JMPREL dynamic table tag.");
PltSec = findNotEmptySectionByAddress(Obj, *DtMipsPltGot);
if (!PltSec)
report_fatal_error("There is no not empty PLTGOT section at 0x " +
Twine::utohexstr(*DtMipsPltGot));
PltRelSec = findNotEmptySectionByAddress(Obj, *DtJmpRel);
if (!PltRelSec)
report_fatal_error("There is no not empty RELPLT section at 0x" +
Twine::utohexstr(*DtJmpRel));
ArrayRef<uint8_t> PltContent =
unwrapOrError(Obj->getSectionContents(PltSec));
PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()),
PltContent.size() / sizeof(Entry));
PltSymTable = unwrapOrError(Obj->getSection(PltRelSec->sh_link));
PltStrTable = unwrapOrError(Obj->getStringTableForSymtab(*PltSymTable));
}
}
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(Obj->rels(PltRelSec));
return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
} else {
Elf_Rela_Range Rels = unwrapOrError(Obj->relas(PltRelSec));
return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
}
}
template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
if (Obj->getHeader()->e_machine != EM_MIPS)
reportError("MIPS PLT GOT is available for MIPS targets only");
MipsGOTParser<ELFT> Parser(Obj, dynamic_table(), dynamic_symbols());
if (Parser.hasGot())
ELFDumperStyle->printMipsGOT(Parser);
if (Parser.hasPlt())
ELFDumperStyle->printMipsPLT(Parser);
}
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> void ELFDumper<ELFT>::printMipsABIFlags() {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags");
if (!Shdr) {
W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
return;
}
ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr));
if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) {
W.startLine() << "The .MIPS.abiflags section has a wrong size.\n";
return;
}
auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data());
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);
}
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 ELFFile<ELFT> *Obj = ObjF->getELFFile();
const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo");
if (!Shdr) {
W.startLine() << "There is no .reginfo section in the file.\n";
return;
}
ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr));
if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) {
W.startLine() << "The .reginfo section has a wrong size.\n";
return;
}
DictScope GS(W, "MIPS RegInfo");
auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data());
printMipsReginfoData(W, *Reginfo);
}
template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options");
if (!Shdr) {
W.startLine() << "There is no .MIPS.options section in the file.\n";
return;
}
DictScope GS(W, "MIPS Options");
ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr));
while (!Sec.empty()) {
if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) {
W.startLine() << "The .MIPS.options section has a wrong size.\n";
return;
}
auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data());
DictScope GS(W, getElfMipsOptionsOdkType(O->kind));
switch (O->kind) {
case ODK_REGINFO:
printMipsReginfoData(W, O->getRegInfo());
break;
default:
W.startLine() << "Unsupported MIPS options tag.\n";
break;
}
Sec = Sec.slice(O->size);
}
}
template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
const ELFFile<ELFT> *Obj = ObjF->getELFFile();
const Elf_Shdr *StackMapSection = nullptr;
for (const auto &Sec : unwrapOrError(Obj->sections())) {
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
if (Name == ".llvm_stackmaps") {
StackMapSection = &Sec;
break;
}
}
if (!StackMapSection)
return;
ArrayRef<uint8_t> StackMapContentsArray =
unwrapOrError(Obj->getSectionContents(StackMapSection));
prettyPrintStackMap(
W, StackMapParser<ELFT::TargetEndianness>(StackMapContentsArray));
}
template <class ELFT> void ELFDumper<ELFT>::printGroupSections() {
ELFDumperStyle->printGroupSections(ObjF->getELFFile());
}
template <class ELFT> void ELFDumper<ELFT>::printAddrsig() {
ELFDumperStyle->printAddrsig(ObjF->getELFFile());
}
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) {
const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
if (ElfHeader->e_shnum != 0)
return to_string(ElfHeader->e_shnum);
ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(Obj->sections());
if (Arr.empty())
return "0";
return "0 (" + to_string(Arr[0].sh_size) + ")";
}
template <class ELFT>
static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj) {
const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
if (ElfHeader->e_shstrndx != SHN_XINDEX)
return to_string(ElfHeader->e_shstrndx);
ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(Obj->sections());
if (Arr.empty())
return "65535 (corrupt: out of range)";
return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) +
")";
}
template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
const Elf_Ehdr *e = 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);
Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]);
printFields(OS, "ABI Version:", Str);
Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType));
printFields(OS, "Type:", Str);
Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType));
printFields(OS, "Machine:", Str);
Str = "0x" + to_hexString(e->e_version);
printFields(OS, "Version:", Str);
Str = "0x" + to_hexString(e->e_entry);
printFields(OS, "Entry point address:", Str);
Str = to_string(e->e_phoff) + " (bytes into file)";
printFields(OS, "Start of program headers:", Str);
Str = to_string(e->e_shoff) + " (bytes into file)";
printFields(OS, "Start of section headers:", Str);
std::string ElfFlags;
if (e->e_machine == EM_MIPS)
ElfFlags =
printFlags(e->e_flags, makeArrayRef(ElfHeaderMipsFlags),
unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
unsigned(ELF::EF_MIPS_MACH));
else if (e->e_machine == EM_RISCV)
ElfFlags = printFlags(e->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
Str = "0x" + to_hexString(e->e_flags);
if (!ElfFlags.empty())
Str = Str + ", " + ElfFlags;
printFields(OS, "Flags:", Str);
Str = to_string(e->e_ehsize) + " (bytes)";
printFields(OS, "Size of this header:", Str);
Str = to_string(e->e_phentsize) + " (bytes)";
printFields(OS, "Size of program headers:", Str);
Str = to_string(e->e_phnum);
printFields(OS, "Number of program headers:", Str);
Str = to_string(e->e_shentsize) + " (bytes)";
printFields(OS, "Size of section headers:", Str);
Str = getSectionHeadersNumString(Obj);
printFields(OS, "Number of section headers:", Str);
Str = getSectionHeaderTableIndexString(Obj);
printFields(OS, "Section header string table index:", Str);
}
namespace {
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;
};
template <class ELFT>
std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) {
using Elf_Shdr = typename ELFT::Shdr;
using Elf_Sym = typename ELFT::Sym;
using Elf_Word = typename ELFT::Word;
std::vector<GroupSection> Ret;
uint64_t I = 0;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
++I;
if (Sec.sh_type != ELF::SHT_GROUP)
continue;
const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link));
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab));
const Elf_Sym *Sym =
unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info));
auto Data =
unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec));
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
StringRef Signature = StrTable.data() + Sym->st_name;
Ret.push_back({Name,
maybeDemangle(Signature),
Sec.sh_name,
I - 1,
Sec.sh_link,
Sec.sh_info,
Data[0],
{}});
std::vector<GroupMember> &GM = Ret.back().Members;
for (uint32_t Ndx : Data.slice(1)) {
auto Sec = unwrapOrError(Obj->getSection(Ndx));
const StringRef Name = unwrapOrError(Obj->getSectionName(Sec));
GM.push_back({Name, Ndx});
}
}
return Ret;
}
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;
}
} // namespace
template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) {
std::vector<GroupSection> V = getGroups<ELFT>(Obj);
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) {
OS.flush();
errs() << "Error: section [" << format_decimal(GM.Index, 5)
<< "] in group section [" << format_decimal(G.Index, 5)
<< "] already in group section ["
<< format_decimal(MainGroup->Index, 5) << "]";
errs().flush();
continue;
}
OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n";
}
}
if (V.empty())
OS << "There are no section groups in this file.\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
const Elf_Rela &R, bool IsRela) {
const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab));
std::string TargetName;
if (Sym && Sym->getType() == ELF::STT_SECTION) {
const Elf_Shdr *Sec = unwrapOrError(
Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
TargetName = unwrapOrError(Obj->getSectionName(Sec));
} else if (Sym) {
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab));
TargetName = this->dumper()->getFullSymbolName(
Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
}
printRelocation(Obj, Sym, TargetName, R, IsRela);
}
template <class ELFT>
void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
StringRef SymbolName, const Elf_Rela &R,
bool IsRela) {
// 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.r_offset, Width));
Fields[1].Str = to_string(format_hex_no_prefix(R.r_info, Width));
SmallString<32> RelocName;
Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName);
Fields[2].Str = RelocName.c_str();
if (Sym && (!SymbolName.empty() || Sym->getValue() != 0))
Fields[3].Str = to_string(format_hex_no_prefix(Sym->getValue(), Width));
Fields[4].Str = SymbolName;
for (const Field &F : Fields)
printField(F);
std::string Addend;
if (IsRela) {
int64_t RelAddend = R.r_addend;
if (!SymbolName.empty()) {
if (R.r_addend < 0) {
Addend = " - ";
RelAddend = std::abs(RelAddend);
} else
Addend = " + ";
}
Addend += to_hexString(RelAddend, false);
}
OS << Addend << "\n";
}
template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) {
bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA;
bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR;
if (ELFT::Is64Bits)
OS << " ";
else
OS << " ";
if (IsRelr && opts::RawRelr)
OS << "Data ";
else
OS << "Offset";
if (ELFT::Is64Bits)
OS << " Info Type"
<< " Symbol's Value Symbol's Name";
else
OS << " Info Type Sym. Value Symbol's Name";
if (IsRela)
OS << " + Addend";
OS << "\n";
}
template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) {
bool HasRelocSections = false;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (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)
continue;
HasRelocSections = true;
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
unsigned Entries = Sec.getEntityCount();
std::vector<Elf_Rela> AndroidRelas;
if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
Sec.sh_type == ELF::SHT_ANDROID_RELA) {
// Android's packed relocation section needs to be unpacked first
// to get the actual number of entries.
AndroidRelas = unwrapOrError(Obj->android_relas(&Sec));
Entries = AndroidRelas.size();
}
std::vector<Elf_Rela> RelrRelas;
if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
// .relr.dyn relative relocation section needs to be unpacked first
// to get the actual number of entries.
Elf_Relr_Range Relrs = unwrapOrError(Obj->relrs(&Sec));
RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs));
Entries = RelrRelas.size();
}
uintX_t Offset = Sec.sh_offset;
OS << "\nRelocation section '" << Name << "' at offset 0x"
<< to_hexString(Offset, false) << " contains " << Entries
<< " entries:\n";
printRelocHeader(Sec.sh_type);
const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link));
switch (Sec.sh_type) {
case ELF::SHT_REL:
for (const auto &R : unwrapOrError(Obj->rels(&Sec))) {
Elf_Rela Rela;
Rela.r_offset = R.r_offset;
Rela.r_info = R.r_info;
Rela.r_addend = 0;
printRelocation(Obj, SymTab, Rela, false);
}
break;
case ELF::SHT_RELA:
for (const auto &R : unwrapOrError(Obj->relas(&Sec)))
printRelocation(Obj, SymTab, R, true);
break;
case ELF::SHT_RELR:
case ELF::SHT_ANDROID_RELR:
if (opts::RawRelr)
for (const auto &R : unwrapOrError(Obj->relrs(&Sec)))
OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8))
<< "\n";
else
for (const auto &R : RelrRelas)
printRelocation(Obj, SymTab, R, false);
break;
case ELF::SHT_ANDROID_REL:
case ELF::SHT_ANDROID_RELA:
for (const auto &R : AndroidRelas)
printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA);
break;
}
}
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 Arch, unsigned Type) {
using namespace ELF;
switch (Arch) {
case EM_ARM:
switch (Type) {
case SHT_ARM_EXIDX:
return "ARM_EXIDX";
case SHT_ARM_PREEMPTMAP:
return "ARM_PREEMPTMAP";
case SHT_ARM_ATTRIBUTES:
return "ARM_ATTRIBUTES";
case SHT_ARM_DEBUGOVERLAY:
return "ARM_DEBUGOVERLAY";
case SHT_ARM_OVERLAYSECTION:
return "ARM_OVERLAYSECTION";
}
break;
case EM_X86_64:
switch (Type) {
case SHT_X86_64_UNWIND:
return "X86_64_UNWIND";
}
break;
case EM_MIPS:
case EM_MIPS_RS3_LE:
switch (Type) {
case SHT_MIPS_REGINFO:
return "MIPS_REGINFO";
case SHT_MIPS_OPTIONS:
return "MIPS_OPTIONS";
case SHT_MIPS_DWARF:
return "MIPS_DWARF";
case SHT_MIPS_ABIFLAGS:
return "MIPS_ABIFLAGS";
}
break;
}
switch (Type) {
case SHT_NULL:
return "NULL";
case SHT_PROGBITS:
return "PROGBITS";
case SHT_SYMTAB:
return "SYMTAB";
case SHT_STRTAB:
return "STRTAB";
case SHT_RELA:
return "RELA";
case SHT_HASH:
return "HASH";
case SHT_DYNAMIC:
return "DYNAMIC";
case SHT_NOTE:
return "NOTE";
case SHT_NOBITS:
return "NOBITS";
case SHT_REL:
return "REL";
case SHT_SHLIB:
return "SHLIB";
case SHT_DYNSYM:
return "DYNSYM";
case SHT_INIT_ARRAY:
return "INIT_ARRAY";
case SHT_FINI_ARRAY:
return "FINI_ARRAY";
case SHT_PREINIT_ARRAY:
return "PREINIT_ARRAY";
case SHT_GROUP:
return "GROUP";
case SHT_SYMTAB_SHNDX:
return "SYMTAB SECTION INDICES";
case SHT_ANDROID_REL:
return "ANDROID_REL";
case SHT_ANDROID_RELA:
return "ANDROID_RELA";
case SHT_RELR:
case SHT_ANDROID_RELR:
return "RELR";
case SHT_LLVM_ODRTAB:
return "LLVM_ODRTAB";
case SHT_LLVM_LINKER_OPTIONS:
return "LLVM_LINKER_OPTIONS";
case SHT_LLVM_CALL_GRAPH_PROFILE:
return "LLVM_CALL_GRAPH_PROFILE";
case SHT_LLVM_ADDRSIG:
return "LLVM_ADDRSIG";
case SHT_LLVM_DEPENDENT_LIBRARIES:
return "LLVM_DEPENDENT_LIBRARIES";
// FIXME: Parse processor specific GNU attributes
case SHT_GNU_ATTRIBUTES:
return "ATTRIBUTES";
case SHT_GNU_HASH:
return "GNU_HASH";
case SHT_GNU_verdef:
return "VERDEF";
case SHT_GNU_verneed:
return "VERNEED";
case SHT_GNU_versym:
return "VERSYM";
default:
return getSectionTypeOffsetString(Type);
}
return "";
}
template <class ELFT>
void GNUStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
unsigned Bias = ELFT::Is64Bits ? 0 : 8;
ArrayRef<Elf_Shdr> Sections = unwrapOrError(Obj->sections());
OS << "There are " << to_string(Sections.size())
<< " section headers, starting at offset "
<< "0x" << to_hexString(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 (auto &F : Fields)
printField(F);
OS << "\n";
size_t SectionIndex = 0;
for (const Elf_Shdr &Sec : Sections) {
Fields[0].Str = to_string(SectionIndex);
Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec));
Fields[2].Str =
getSectionTypeString(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(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;
}
OS << "Key to Flags:\n"
<< " W (write), A (alloc), X (execute), M (merge), S (strings), l "
"(large)\n"
<< " I (info), L (link order), G (group), T (TLS), E (exclude),\
x (unknown)\n"
<< " O (extra OS processing required) o (OS specific),\
p (processor specific)\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name,
size_t Entries) {
if (!Name.empty())
OS << "\nSymbol table '" << Name << "' contains " << Entries
<< " entries:\n";
else
OS << "\n Symbol table for image:\n";
if (ELFT::Is64Bits)
OS << " Num: Value Size Type Bind Vis Ndx Name\n";
else
OS << " Num: Value Size Type Bind Vis Ndx Name\n";
}
template <class ELFT>
std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj,
const Elf_Sym *Symbol,
const Elf_Sym *FirstSym) {
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:
return to_string(
format_decimal(unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>(
Symbol, FirstSym, this->dumper()->getShndxTable())),
3));
default:
// Find if:
// Processor specific
if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC)
return std::string("PRC[0x") +
to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
// OS specific
if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS)
return std::string("OS[0x") +
to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
// Architecture reserved:
if (SectionIndex >= ELF::SHN_LORESERVE &&
SectionIndex <= ELF::SHN_HIRESERVE)
return std::string("RSV[0x") +
to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
// A normal section with an index
return to_string(format_decimal(SectionIndex, 3));
}
}
template <class ELFT>
void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
const Elf_Sym *FirstSym, StringRef StrTable,
bool IsDynamic) {
static int Idx = 0;
static bool Dynamic = true;
// If this function was called with a different value from IsDynamic
// from last call, happens when we move from dynamic to static symbol
// table, "Num" field should be reset.
if (!Dynamic != !IsDynamic) {
Idx = 0;
Dynamic = false;
}
unsigned Bias = ELFT::Is64Bits ? 8 : 0;
Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias,
31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias};
Fields[0].Str = to_string(format_decimal(Idx++, 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 (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));
Fields[6].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym);
Fields[7].Str =
this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
for (auto &Entry : Fields)
printField(Entry);
OS << "\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym,
uint32_t Sym, 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(Sym, 5));
Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":";
const auto Symbol = FirstSym + Sym;
Fields[2].Str = to_string(
format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 18 : 8));
Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5));
unsigned char SymbolType = Symbol->getType();
if (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(Obj, Symbol, FirstSym);
Fields[8].Str = this->dumper()->getFullSymbolName(Symbol, StrTable, true);
for (auto &Entry : Fields)
printField(Entry);
OS << "\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
bool PrintDynamicSymbols) {
if (!PrintSymbols && !PrintDynamicSymbols)
return;
// GNU readelf prints both the .dynsym and .symtab with --symbols.
this->dumper()->printSymbolsHelper(true);
if (PrintSymbols)
this->dumper()->printSymbolsHelper(false);
}
template <class ELFT> void GNUStyle<ELFT>::printHashSymbols(const ELFO *Obj) {
if (this->dumper()->getDynamicStringTable().empty())
return;
auto StringTable = this->dumper()->getDynamicStringTable();
auto DynSyms = this->dumper()->dynamic_symbols();
// Try printing .hash
if (auto SysVHash = this->dumper()->getHashTable()) {
OS << "\n Symbol table of .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";
auto Buckets = SysVHash->buckets();
auto Chains = SysVHash->chains();
for (uint32_t Buc = 0; Buc < SysVHash->nbucket; Buc++) {
if (Buckets[Buc] == ELF::STN_UNDEF)
continue;
for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash->nchain; Ch = Chains[Ch]) {
if (Ch == ELF::STN_UNDEF)
break;
printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc);
}
}
}
// Try printing .gnu.hash
if (auto GnuHash = this->dumper()->getGnuHashTable()) {
OS << "\n Symbol table of .gnu.hash for image:\n";
if (ELFT::Is64Bits)
OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
else
OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
OS << "\n";
auto Buckets = GnuHash->buckets();
for (uint32_t Buc = 0; Buc < GnuHash->nbuckets; Buc++) {
if (Buckets[Buc] == ELF::STN_UNDEF)
continue;
uint32_t Index = Buckets[Buc];
uint32_t GnuHashable = Index - GnuHash->symndx;
// Print whole chain
while (true) {
printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc);
// Chain ends at symbol with stopper bit
if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1)
break;
}
}
}
}
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;
}
// SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO
// PT_TLS must only have SHF_TLS sections
template <class ELFT>
bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr,
const Elf_Shdr &Sec) {
return (((Sec.sh_flags & ELF::SHF_TLS) &&
((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) ||
(Phdr.p_type == ELF::PT_GNU_RELRO))) ||
(!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS));
}
// Non-SHT_NOBITS must have its offset inside the segment
// Only non-zero section can be at end of segment
template <class ELFT>
bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
if (Sec.sh_type == ELF::SHT_NOBITS)
return true;
bool IsSpecial =
(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
auto SectionSize =
(IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
if (Sec.sh_offset >= Phdr.p_offset)
return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset)
/*only non-zero sized sections at end*/
&& (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz));
return false;
}
// SHF_ALLOC must have VMA inside segment
// Only non-zero section can be at end of segment
template <class ELFT>
bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
if (!(Sec.sh_flags & ELF::SHF_ALLOC))
return true;
bool IsSpecial =
(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
auto SectionSize =
(IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
if (Sec.sh_addr >= Phdr.p_vaddr)
return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) &&
(Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz));
return false;
}
// No section with zero size must be at start or end of PT_DYNAMIC
template <class ELFT>
bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0)
return true;
// Is section within the phdr both based on offset and VMA ?
return ((Sec.sh_type == ELF::SHT_NOBITS) ||
(Sec.sh_offset > Phdr.p_offset &&
Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) &&
(!(Sec.sh_flags & ELF::SHF_ALLOC) ||
(Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz));
}
template <class ELFT>
void GNUStyle<ELFT>::printProgramHeaders(
const ELFO *Obj, bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) {
if (PrintProgramHeaders)
printProgramHeaders(Obj);
// Display the section mapping along with the program headers, unless
// -section-mapping is explicitly set to false.
if (PrintSectionMapping != cl::BOU_FALSE)
printSectionMapping(Obj);
}
template <class ELFT>
void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
unsigned Bias = ELFT::Is64Bits ? 8 : 0;
const Elf_Ehdr *Header = 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;
for (const auto &Phdr : unwrapOrError(Obj->program_headers())) {
Fields[0].Str = getElfPtType(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 (auto Field : Fields)
printField(Field);
if (Phdr.p_type == ELF::PT_INTERP) {
OS << "\n [Requesting program interpreter: ";
OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]";
}
OS << "\n";
}
}
template <class ELFT>
void GNUStyle<ELFT>::printSectionMapping(const ELFO *Obj) {
OS << "\n Section to Segment mapping:\n Segment Sections...\n";
DenseSet<const Elf_Shdr *> BelongsToSegment;
int Phnum = 0;
for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) {
std::string Sections;
OS << format(" %2.2d ", Phnum++);
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
// Check if each section is in a segment and then print mapping.
// 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.
bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) &&
((Sec.sh_flags & ELF::SHF_TLS) != 0) &&
Phdr.p_type != ELF::PT_TLS;
if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) &&
checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) &&
checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) {
Sections += unwrapOrError(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 : unwrapOrError(Obj->sections())) {
if (BelongsToSegment.find(&Sec) == BelongsToSegment.end())
Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + ' ';
}
if (!Sections.empty()) {
OS << " None " << Sections << '\n';
OS.flush();
}
}
template <class ELFT>
void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R,
bool IsRela) {
uint32_t SymIndex = R.getSymbol(Obj->isMips64EL());
const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
std::string SymbolName = maybeDemangle(
unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())));
printRelocation(Obj, Sym, SymbolName, R, IsRela);
}
template <class ELFT> void GNUStyle<ELFT>::printDynamic(const ELFO *Obj) {
Elf_Dyn_Range Table = this->dumper()->dynamic_table();
if (Table.empty())
return;
const DynRegionInfo &DynamicTableRegion =
this->dumper()->getDynamicTableRegion();
OS << "Dynamic section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(DynamicTableRegion.Addr) -
Obj->base(),
1)
<< " contains " << Table.size() << " entries:\n";
bool Is64 = ELFT::Is64Bits;
if (Is64)
OS << " Tag Type Name/Value\n";
else
OS << " Tag Type Name/Value\n";
for (auto Entry : Table) {
uintX_t Tag = Entry.getTag();
std::string TypeString = std::string("(") +
getTypeString(Obj->getHeader()->e_machine, Tag) +
")";
OS << " " << format_hex(Tag, Is64 ? 18 : 10)
<< format(" %-20s ", TypeString.c_str());
this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
OS << "\n";
}
}
template <class ELFT>
void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
if (DynRelaRegion.Size > 0) {
OS << "\n'RELA' relocation section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) -
Obj->base(),
1)
<< " contains " << DynRelaRegion.Size << " bytes:\n";
printRelocHeader(ELF::SHT_RELA);
for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
printDynamicRelocation(Obj, Rela, true);
}
if (DynRelRegion.Size > 0) {
OS << "\n'REL' relocation section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) -
Obj->base(),
1)
<< " contains " << DynRelRegion.Size << " bytes:\n";
printRelocHeader(ELF::SHT_REL);
for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
Elf_Rela Rela;
Rela.r_offset = Rel.r_offset;
Rela.r_info = Rel.r_info;
Rela.r_addend = 0;
printDynamicRelocation(Obj, Rela, false);
}
}
if (DynRelrRegion.Size > 0) {
OS << "\n'RELR' relocation section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) -
Obj->base(),
1)
<< " contains " << DynRelrRegion.Size << " bytes:\n";
printRelocHeader(ELF::SHT_REL);
Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs));
for (const Elf_Rela &Rela : RelrRelas) {
printDynamicRelocation(Obj, Rela, false);
}
}
if (DynPLTRelRegion.Size) {
OS << "\n'PLT' relocation section at offset "
<< format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) -
Obj->base(),
1)
<< " contains " << DynPLTRelRegion.Size << " bytes:\n";
}
if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) {
printRelocHeader(ELF::SHT_RELA);
for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
printDynamicRelocation(Obj, Rela, true);
} else {
printRelocHeader(ELF::SHT_REL);
for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
Elf_Rela Rela;
Rela.r_offset = Rel.r_offset;
Rela.r_info = Rel.r_info;
Rela.r_addend = 0;
printDynamicRelocation(Obj, Rela, false);
}
}
}
template <class ELFT>
void GNUStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
if (!Sec)
return;
StringRef SecName = unwrapOrError(Obj->getSectionName(Sec));
uint64_t Entries = Sec->sh_size / sizeof(Elf_Versym);
OS << "Version symbols section '" << SecName << "' "
<< "contains " << Entries << " entries:\n";
const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link));
StringRef SymTabName = unwrapOrError(Obj->getSectionName(SymTab));
OS << " Addr: " << format_hex_no_prefix(Sec->sh_addr, 16)
<< " Offset: " << format_hex(Sec->sh_offset, 8)
<< " Link: " << Sec->sh_link << " (" << SymTabName << ")\n";
const uint8_t *VersymBuf =
reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
const ELFDumper<ELFT> *Dumper = this->dumper();
StringRef StrTable = Dumper->getDynamicStringTable();
// readelf prints 4 entries per line.
for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) {
OS << " " << format_hex_no_prefix(VersymRow, 3) << ":";
for (uint64_t VersymIndex = 0;
(VersymIndex < 4) && (VersymIndex + VersymRow) < Entries;
++VersymIndex) {
const Elf_Versym *Versym =
reinterpret_cast<const Elf_Versym *>(VersymBuf);
switch (Versym->vs_index) {
case 0:
OS << " 0 (*local*) ";
break;
case 1:
OS << " 1 (*global*) ";
break;
default:
OS << format("%4x%c", Versym->vs_index & VERSYM_VERSION,
Versym->vs_index & VERSYM_HIDDEN ? 'h' : ' ');
bool IsDefault = true;
std::string VersionName = Dumper->getSymbolVersionByIndex(
StrTable, Versym->vs_index, IsDefault);
if (!VersionName.empty())
VersionName = "(" + VersionName + ")";
else
VersionName = "(*invalid*)";
OS << left_justify(VersionName, 13);
}
VersymBuf += sizeof(Elf_Versym);
}
OS << '\n';
}
OS << '\n';
}
template <class ELFT>
void GNUStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
if (!Sec)
return;
StringRef SecName = unwrapOrError(Obj->getSectionName(Sec));
OS << "Dumper for " << SecName << " is not implemented\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
if (!Sec)
return;
StringRef SecName = unwrapOrError(Obj->getSectionName(Sec));
OS << "Dumper for " << SecName << " is not implemented\n";
}
// Hash histogram shows statistics of how efficient the hash was for the
// dynamic symbol table. The table shows number of hash buckets for different
// lengths of chains as absolute number and percentage of the total buckets.
// Additionally cumulative coverage of symbols for each set of buckets.
template <class ELFT>
void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
// Print histogram for .hash section
if (const Elf_Hash *HashTable = this->dumper()->getHashTable()) {
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++) {
for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C])
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);
}
}
// Print histogram for .gnu.hash section
if (const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable()) {
size_t NBucket = GnuHashTable->nbuckets;
ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets();
unsigned NumSyms = this->dumper()->dynamic_symbols().size();
if (!NumSyms)
return;
ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms);
size_t Symndx = GnuHashTable->symndx;
size_t TotalSyms = 0;
size_t MaxChain = 1;
size_t CumulativeNonZero = 0;
if (Chains.empty() || NBucket == 0)
return;
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);
}
}
}
template <class ELFT>
void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
OS << "GNUStyle::printCGProfile not implemented\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
OS << "GNUStyle::printAddrsig not implemented\n";
}
static StringRef getGenericNoteTypeName(const uint32_t NT) {
static const struct {
uint32_t ID;
const char *Name;
} Notes[] = {
{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"},
};
for (const auto &Note : Notes)
if (Note.ID == NT)
return Note.Name;
return "";
}
static std::string getGNUNoteTypeName(const uint32_t NT) {
static const struct {
uint32_t ID;
const char *Name;
} Notes[] = {
{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)"},
};
for (const auto &Note : Notes)
if (Note.ID == NT)
return std::string(Note.Name);
std::string string;
raw_string_ostream OS(string);
OS << format("Unknown note type (0x%08x)", NT);
return OS.str();
}
static std::string getFreeBSDNoteTypeName(const uint32_t NT) {
static const struct {
uint32_t ID;
const char *Name;
} Notes[] = {
{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)"},
};
for (const auto &Note : Notes)
if (Note.ID == NT)
return std::string(Note.Name);
std::string string;
raw_string_ostream OS(string);
OS << format("Unknown note type (0x%08x)", NT);
return OS.str();
}
static std::string getAMDNoteTypeName(const uint32_t NT) {
static const struct {
uint32_t ID;
const char *Name;
} Notes[] = {{ELF::NT_AMD_AMDGPU_HSA_METADATA,
"NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"},
{ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"},
{ELF::NT_AMD_AMDGPU_PAL_METADATA,
"NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}};
for (const auto &Note : Notes)
if (Note.ID == NT)
return std::string(Note.Name);
std::string string;
raw_string_ostream OS(string);
OS << format("Unknown note type (0x%08x)", NT);
return OS.str();
}
static std::string getAMDGPUNoteTypeName(const uint32_t NT) {
if (NT == ELF::NT_AMDGPU_METADATA)
return std::string("NT_AMDGPU_METADATA (AMDGPU Metadata)");
std::string string;
raw_string_ostream OS(string);
OS << format("Unknown note type (0x%08x)", NT);
return OS.str();
}
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_X86_FEATURE_1_AND:
OS << "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();
}
DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
if (PrData)
OS << format("<unknown flags: 0x%x>", PrData);
return OS.str();
case GNU_PROPERTY_X86_ISA_1_NEEDED:
case GNU_PROPERTY_X86_ISA_1_USED:
OS << "x86 ISA "
<< (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: ");
if (DataSize != 4) {
OS << format("<corrupt length: 0x%x>", DataSize);
return OS.str();
}
PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
if (PrData == 0) {
OS << "<None>";
return OS.str();
}
DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1");
DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2");
DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2");
DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI");
if (PrData)
OS << format("<unknown flags: 0x%x>", PrData);
return OS.str();
break;
case GNU_PROPERTY_X86_FEATURE_2_NEEDED:
case GNU_PROPERTY_X86_FEATURE_2_USED:
OS << "x86 feature "
<< (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: ");
if (DataSize != 4) {
OS << format("<corrupt length: 0x%x>", DataSize);
return OS.str();
}
PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
if (PrData == 0) {
OS << "<None>";
return OS.str();
}
DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT");
DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC");
if (PrData)
OS << format("<unknown flags: 0x%x>", PrData);
return OS.str();
}
}
template <typename ELFT>
static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) {
using Elf_Word = typename ELFT::Word;
SmallVector<std::string, 4> Properties;
while (Arr.size() >= 8) {
uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data());
uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4);
Arr = Arr.drop_front(8);
// Take padding size into account if present.
uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint));
std::string str;
raw_string_ostream OS(str);
if (Arr.size() < PaddedSize) {
OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize);
Properties.push_back(OS.str());
break;
}
Properties.push_back(
getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize)));
Arr = Arr.drop_front(PaddedSize);
}
if (!Arr.empty())
Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>");
return Properties;
}
struct GNUAbiTag {
std::string OSName;
std::string ABI;
bool IsValid;
};
template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) {
typedef typename ELFT::Word Elf_Word;
ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()),
reinterpret_cast<const Elf_Word *>(Desc.end()));
if (Words.size() < 4)
return {"", "", /*IsValid=*/false};
static const char *OSNames[] = {
"Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl",
};
StringRef OSName = "Unknown";
if (Words[0] < array_lengthof(OSNames))
OSName = OSNames[Words[0]];
uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3];
std::string str;
raw_string_ostream ABI(str);
ABI << Major << "." << Minor << "." << Patch;
return {OSName, ABI.str(), /*IsValid=*/true};
}
static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) {
std::string str;
raw_string_ostream OS(str);
for (const auto &B : Desc)
OS << format_hex_no_prefix(B, 2);
return OS.str();
}
static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) {
return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
}
template <typename ELFT>
static void printGNUNote(raw_ostream &OS, uint32_t NoteType,
ArrayRef<uint8_t> Desc) {
switch (NoteType) {
default:
return;
case ELF::NT_GNU_ABI_TAG: {
const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
if (!AbiTag.IsValid)
OS << " <corrupt GNU_ABI_TAG>";
else
OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI;
break;
}
case ELF::NT_GNU_BUILD_ID: {
OS << " Build ID: " << getGNUBuildId(Desc);
break;
}
case ELF::NT_GNU_GOLD_VERSION:
OS << " Version: " << getGNUGoldVersion(Desc);
break;
case ELF::NT_GNU_PROPERTY_TYPE_0:
OS << " Properties:";
for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
OS << " " << Property << "\n";
break;
}
OS << '\n';
}
struct AMDNote {
std::string Type;
std::string Value;
};
template <typename ELFT>
static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
switch (NoteType) {
default:
return {"", ""};
case ELF::NT_AMD_AMDGPU_HSA_METADATA:
return {
"HSA Metadata",
std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
case ELF::NT_AMD_AMDGPU_ISA:
return {
"ISA Version",
std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
}
}
struct AMDGPUNote {
std::string Type;
std::string Value;
};
template <typename ELFT>
static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
switch (NoteType) {
default:
return {"", ""};
case ELF::NT_AMDGPU_METADATA: {
auto MsgPackString =
StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
msgpack::Document MsgPackDoc;
if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false))
return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true);
if (!Verifier.verify(MsgPackDoc.getRoot()))
return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
std::string HSAMetadataString;
raw_string_ostream StrOS(HSAMetadataString);
MsgPackDoc.toYAML(StrOS);
return {"AMDGPU Metadata", StrOS.str()};
}
}
}
template <class ELFT>
void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
auto PrintHeader = [&](const typename ELFT::Off Offset,
const typename ELFT::Addr Size) {
OS << "Displaying notes found at file offset " << format_hex(Offset, 10)
<< " with length " << format_hex(Size, 10) << ":\n"
<< " Owner Data size\tDescription\n";
};
auto ProcessNote = [&](const Elf_Note &Note) {
StringRef Name = Note.getName();
ArrayRef<uint8_t> Descriptor = Note.getDesc();
Elf_Word Type = Note.getType();
OS << " " << Name << std::string(22 - Name.size(), ' ')
<< format_hex(Descriptor.size(), 10) << '\t';
if (Name == "GNU") {
OS << getGNUNoteTypeName(Type) << '\n';
printGNUNote<ELFT>(OS, Type, Descriptor);
} else if (Name == "FreeBSD") {
OS << getFreeBSDNoteTypeName(Type) << '\n';
} else if (Name == "AMD") {
OS << getAMDNoteTypeName(Type) << '\n';
const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
if (!N.Type.empty())
OS << " " << N.Type << ":\n " << N.Value << '\n';
} else if (Name == "AMDGPU") {
OS << getAMDGPUNoteTypeName(Type) << '\n';
const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
if (!N.Type.empty())
OS << " " << N.Type << ":\n " << N.Value << '\n';
} else {
StringRef NoteType = getGenericNoteTypeName(Type);
if (!NoteType.empty())
OS << NoteType;
else
OS << "Unknown note type: (" << format_hex(Type, 10) << ')';
}
OS << '\n';
};
if (Obj->getHeader()->e_type == ELF::ET_CORE) {
for (const auto &P : unwrapOrError(Obj->program_headers())) {
if (P.p_type != PT_NOTE)
continue;
PrintHeader(P.p_offset, P.p_filesz);
Error Err = Error::success();
for (const auto &Note : Obj->notes(P, Err))
ProcessNote(Note);
if (Err)
error(std::move(Err));
}
} else {
for (const auto &S : unwrapOrError(Obj->sections())) {
if (S.sh_type != SHT_NOTE)
continue;
PrintHeader(S.sh_offset, S.sh_size);
Error Err = Error::success();
for (const auto &Note : Obj->notes(S, Err))
ProcessNote(Note);
if (Err)
error(std::move(Err));
}
}
}
template <class ELFT>
void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
OS << "printELFLinkerOptions not implemented!\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
size_t Bias = ELFT::Is64Bits ? 8 : 0;
auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
OS.PadToColumn(2);
OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias);
OS.PadToColumn(11 + Bias);
OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)";
OS.PadToColumn(22 + Bias);
OS << format_hex_no_prefix(*E, 8 + Bias);
OS.PadToColumn(31 + 2 * Bias);
OS << Purpose << "\n";
};
OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n");
OS << " Canonical gp value: "
<< format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n";
OS << " Reserved entries:\n";
if (ELFT::Is64Bits)
OS << " Address Access Initial Purpose\n";
else
OS << " Address Access Initial Purpose\n";
PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver");
if (Parser.getGotModulePointer())
PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)");
if (!Parser.getLocalEntries().empty()) {
OS << "\n";
OS << " Local entries:\n";
if (ELFT::Is64Bits)
OS << " Address Access Initial\n";
else
OS << " Address Access Initial\n";
for (auto &E : Parser.getLocalEntries())
PrintEntry(&E, "");
}
if (Parser.IsStatic)
return;
if (!Parser.getGlobalEntries().empty()) {
OS << "\n";
OS << " Global entries:\n";
if (ELFT::Is64Bits)
OS << " Address Access Initial Sym.Val."
<< " Type Ndx Name\n";
else
OS << " Address Access Initial Sym.Val. Type Ndx Name\n";
for (auto &E : Parser.getGlobalEntries()) {
const Elf_Sym *Sym = Parser.getGotSym(&E);
std::string SymName = this->dumper()->getFullSymbolName(
Sym, this->dumper()->getDynamicStringTable(), false);
OS.PadToColumn(2);
OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias));
OS.PadToColumn(11 + Bias);
OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)";
OS.PadToColumn(22 + Bias);
OS << to_string(format_hex_no_prefix(E, 8 + Bias));
OS.PadToColumn(31 + 2 * Bias);
OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
OS.PadToColumn(40 + 3 * Bias);
OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
OS.PadToColumn(48 + 3 * Bias);
OS << getSymbolSectionNdx(Parser.Obj, Sym,
this->dumper()->dynamic_symbols().begin());
OS.PadToColumn(52 + 3 * Bias);
OS << SymName << "\n";
}
}
if (!Parser.getOtherEntries().empty())
OS << "\n Number of TLS and multi-GOT entries "
<< Parser.getOtherEntries().size() << "\n";
}
template <class ELFT>
void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
size_t Bias = ELFT::Is64Bits ? 8 : 0;
auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
OS.PadToColumn(2);
OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias);
OS.PadToColumn(11 + Bias);
OS << format_hex_no_prefix(*E, 8 + Bias);
OS.PadToColumn(20 + 2 * Bias);
OS << Purpose << "\n";
};
OS << "PLT GOT:\n\n";
OS << " Reserved entries:\n";
OS << " Address Initial Purpose\n";
PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver");
if (Parser.getPltModulePointer())
PrintEntry(Parser.getPltModulePointer(), "Module pointer");
if (!Parser.getPltEntries().empty()) {
OS << "\n";
OS << " Entries:\n";
OS << " Address Initial Sym.Val. Type Ndx Name\n";
for (auto &E : Parser.getPltEntries()) {
const Elf_Sym *Sym = Parser.getPltSym(&E);
std::string SymName = this->dumper()->getFullSymbolName(
Sym, this->dumper()->getDynamicStringTable(), false);
OS.PadToColumn(2);
OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias));
OS.PadToColumn(11 + Bias);
OS << to_string(format_hex_no_prefix(E, 8 + Bias));
OS.PadToColumn(20 + 2 * Bias);
OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
OS.PadToColumn(29 + 3 * Bias);
OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
OS.PadToColumn(37 + 3 * Bias);
OS << getSymbolSectionNdx(Parser.Obj, Sym,
this->dumper()->dynamic_symbols().begin());
OS.PadToColumn(41 + 3 * Bias);
OS << SymName << "\n";
}
}
}
template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
const Elf_Ehdr *E = Obj->getHeader();
{
DictScope D(W, "ElfHeader");
{
DictScope D(W, "Ident");
W.printBinary("Magic", makeArrayRef(E->e_ident).slice(ELF::EI_MAG0, 4));
W.printEnum("Class", E->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
W.printEnum("DataEncoding", E->e_ident[ELF::EI_DATA],
makeArrayRef(ElfDataEncoding));
W.printNumber("FileVersion", E->e_ident[ELF::EI_VERSION]);
auto OSABI = makeArrayRef(ElfOSABI);
if (E->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
E->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
switch (E->e_machine) {
case ELF::EM_AMDGPU:
OSABI = makeArrayRef(AMDGPUElfOSABI);
break;
case ELF::EM_ARM:
OSABI = makeArrayRef(ARMElfOSABI);
break;
case ELF::EM_TI_C6000:
OSABI = makeArrayRef(C6000ElfOSABI);
break;
}
}
W.printEnum("OS/ABI", E->e_ident[ELF::EI_OSABI], OSABI);
W.printNumber("ABIVersion", E->e_ident[ELF::EI_ABIVERSION]);
W.printBinary("Unused", makeArrayRef(E->e_ident).slice(ELF::EI_PAD));
}
W.printEnum("Type", E->e_type, makeArrayRef(ElfObjectFileType));
W.printEnum("Machine", E->e_machine, makeArrayRef(ElfMachineType));
W.printNumber("Version", E->e_version);
W.printHex("Entry", E->e_entry);
W.printHex("ProgramHeaderOffset", E->e_phoff);
W.printHex("SectionHeaderOffset", E->e_shoff);
if (E->e_machine == EM_MIPS)
W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderMipsFlags),
unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
unsigned(ELF::EF_MIPS_MACH));
else if (E->e_machine == EM_AMDGPU)
W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags),
unsigned(ELF::EF_AMDGPU_MACH));
else if (E->e_machine == EM_RISCV)
W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
else
W.printFlags("Flags", E->e_flags);
W.printNumber("HeaderSize", E->e_ehsize);
W.printNumber("ProgramHeaderEntrySize", E->e_phentsize);
W.printNumber("ProgramHeaderCount", E->e_phnum);
W.printNumber("SectionHeaderEntrySize", E->e_shentsize);
W.printString("SectionHeaderCount", getSectionHeadersNumString(Obj));
W.printString("StringTableSectionIndex",
getSectionHeaderTableIndexString(Obj));
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) {
DictScope Lists(W, "Groups");
std::vector<GroupSection> V = getGroups<ELFT>(Obj);
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) {
W.flush();
errs() << "Error: " << GM.Name << " (" << GM.Index
<< ") in a group " + G.Name + " (" << G.Index
<< ") is already in a group " + MainGroup->Name + " ("
<< MainGroup->Index << ")\n";
errs().flush();
continue;
}
W.startLine() << GM.Name << " (" << GM.Index << ")\n";
}
}
if (V.empty())
W.startLine() << "There are no group sections in the file.\n";
}
template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) {
ListScope D(W, "Relocations");
int SectionNumber = -1;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
++SectionNumber;
if (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)
continue;
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
W.indent();
printRelocations(&Sec, Obj);
W.unindent();
W.startLine() << "}\n";
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) {
const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link));
switch (Sec->sh_type) {
case ELF::SHT_REL:
for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) {
Elf_Rela Rela;
Rela.r_offset = R.r_offset;
Rela.r_info = R.r_info;
Rela.r_addend = 0;
printRelocation(Obj, Rela, SymTab);
}
break;
case ELF::SHT_RELA:
for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec)))
printRelocation(Obj, R, SymTab);
break;
case ELF::SHT_RELR:
case ELF::SHT_ANDROID_RELR: {
Elf_Relr_Range Relrs = unwrapOrError(Obj->relrs(Sec));
if (opts::RawRelr) {
for (const Elf_Relr &R : Relrs)
W.startLine() << W.hex(R) << "\n";
} else {
std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs));
for (const Elf_Rela &R : RelrRelas)
printRelocation(Obj, R, SymTab);
}
break;
}
case ELF::SHT_ANDROID_REL:
case ELF::SHT_ANDROID_RELA:
for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec)))
printRelocation(Obj, R, SymTab);
break;
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel,
const Elf_Shdr *SymTab) {
SmallString<32> RelocName;
Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
std::string TargetName;
const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab));
if (Sym && Sym->getType() == ELF::STT_SECTION) {
const Elf_Shdr *Sec = unwrapOrError(
Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
TargetName = unwrapOrError(Obj->getSectionName(Sec));
} else if (Sym) {
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab));
TargetName = this->dumper()->getFullSymbolName(
Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
}
if (opts::ExpandRelocs) {
DictScope Group(W, "Relocation");
W.printHex("Offset", Rel.r_offset);
W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-",
Rel.getSymbol(Obj->isMips64EL()));
W.printHex("Addend", Rel.r_addend);
} else {
raw_ostream &OS = W.startLine();
OS << W.hex(Rel.r_offset) << " " << RelocName << " "
<< (!TargetName.empty() ? TargetName : "-") << " " << W.hex(Rel.r_addend)
<< "\n";
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
ListScope SectionsD(W, "Sections");
int SectionIndex = -1;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
++SectionIndex;
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
DictScope SectionD(W, "Section");
W.printNumber("Index", SectionIndex);
W.printNumber("Name", Name, Sec.sh_name);
W.printHex(
"Type",
object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type),
Sec.sh_type);
std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags),
std::end(ElfSectionFlags));
switch (Obj->getHeader()->e_machine) {
case EM_ARM:
SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags),
std::end(ElfARMSectionFlags));
break;
case EM_HEXAGON:
SectionFlags.insert(SectionFlags.end(),
std::begin(ElfHexagonSectionFlags),
std::end(ElfHexagonSectionFlags));
break;
case EM_MIPS:
SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags),
std::end(ElfMipsSectionFlags));
break;
case EM_X86_64:
SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags),
std::end(ElfX86_64SectionFlags));
break;
case EM_XCORE:
SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags),
std::end(ElfXCoreSectionFlags));
break;
default:
// Nothing to do.
break;
}
W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags));
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");
printRelocations(&Sec, Obj);
}
if (opts::SectionSymbols) {
ListScope D(W, "Symbols");
const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec();
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab));
for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) {
const Elf_Shdr *SymSec = unwrapOrError(
Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable()));
if (SymSec == &Sec)
printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(),
StrTable, false);
}
}
if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) {
ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec));
W.printBinaryBlock(
"SectionData",
StringRef(reinterpret_cast<const char *>(Data.data()), Data.size()));
}
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
const Elf_Sym *First, StringRef StrTable,
bool IsDynamic) {
unsigned SectionIndex = 0;
StringRef SectionName;
this->dumper()->getSectionNameIndex(Symbol, First, SectionName, SectionIndex);
std::string FullSymbolName =
this->dumper()->getFullSymbolName(Symbol, 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 (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 (Obj->getHeader()->e_machine == EM_MIPS) {
// Someones in their infinite wisdom decided to make STO_MIPS_MIPS16
// flag overlapped with other ST_MIPS_xxx flags. So consider both
// cases separately.
if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16)
SymOtherFlags.insert(SymOtherFlags.end(),
std::begin(ElfMips16SymOtherFlags),
std::end(ElfMips16SymOtherFlags));
else
SymOtherFlags.insert(SymOtherFlags.end(),
std::begin(ElfMipsSymOtherFlags),
std::end(ElfMipsSymOtherFlags));
}
W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u);
}
W.printHex("Section", SectionName, SectionIndex);
}
template <class ELFT>
void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
bool PrintDynamicSymbols) {
if (PrintSymbols)
printSymbols(Obj);
if (PrintDynamicSymbols)
printDynamicSymbols(Obj);
}
template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) {
ListScope Group(W, "Symbols");
this->dumper()->printSymbolsHelper(false);
}
template <class ELFT>
void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) {
ListScope Group(W, "DynamicSymbols");
this->dumper()->printSymbolsHelper(true);
}
template <class ELFT> void LLVMStyle<ELFT>::printDynamic(const ELFFile<ELFT> *Obj) {
Elf_Dyn_Range Table = this->dumper()->dynamic_table();
if (Table.empty())
return;
raw_ostream &OS = W.getOStream();
W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n";
bool Is64 = ELFT::Is64Bits;
if (Is64)
W.startLine() << " Tag Type Name/Value\n";
else
W.startLine() << " Tag Type Name/Value\n";
for (auto Entry : Table) {
uintX_t Tag = Entry.getTag();
W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, true) << " "
<< format("%-21s",
getTypeString(Obj->getHeader()->e_machine, Tag));
this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
OS << "\n";
}
W.startLine() << "]\n";
}
template <class ELFT>
void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
if (DynRelRegion.Size && DynRelaRegion.Size)
report_fatal_error("There are both REL and RELA dynamic relocations");
W.startLine() << "Dynamic Relocations {\n";
W.indent();
if (DynRelaRegion.Size > 0)
for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
printDynamicRelocation(Obj, Rela);
else
for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
Elf_Rela Rela;
Rela.r_offset = Rel.r_offset;
Rela.r_info = Rel.r_info;
Rela.r_addend = 0;
printDynamicRelocation(Obj, Rela);
}
if (DynRelrRegion.Size > 0) {
Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs));
for (const Elf_Rela &Rela : RelrRelas)
printDynamicRelocation(Obj, Rela);
}
if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela))
for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
printDynamicRelocation(Obj, Rela);
else
for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
Elf_Rela Rela;
Rela.r_offset = Rel.r_offset;
Rela.r_info = Rel.r_info;
Rela.r_addend = 0;
printDynamicRelocation(Obj, Rela);
}
W.unindent();
W.startLine() << "}\n";
}
template <class ELFT>
void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) {
SmallString<32> RelocName;
Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
std::string SymbolName;
uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL());
const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
SymbolName = maybeDemangle(
unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())));
if (opts::ExpandRelocs) {
DictScope Group(W, "Relocation");
W.printHex("Offset", Rel.r_offset);
W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-");
W.printHex("Addend", Rel.r_addend);
} else {
raw_ostream &OS = W.startLine();
OS << W.hex(Rel.r_offset) << " " << RelocName << " "
<< (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Rel.r_addend)
<< "\n";
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printProgramHeaders(
const ELFO *Obj, bool PrintProgramHeaders,
cl::boolOrDefault PrintSectionMapping) {
if (PrintProgramHeaders)
printProgramHeaders(Obj);
if (PrintSectionMapping == cl::BOU_TRUE)
printSectionMapping(Obj);
}
template <class ELFT>
void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
ListScope L(W, "ProgramHeaders");
for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) {
DictScope P(W, "ProgramHeader");
W.printHex("Type",
getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type),
Phdr.p_type);
W.printHex("Offset", Phdr.p_offset);
W.printHex("VirtualAddress", Phdr.p_vaddr);
W.printHex("PhysicalAddress", Phdr.p_paddr);
W.printNumber("FileSize", Phdr.p_filesz);
W.printNumber("MemSize", Phdr.p_memsz);
W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags));
W.printNumber("Alignment", Phdr.p_align);
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
DictScope SS(W, "Version symbols");
if (!Sec)
return;
StringRef SecName = unwrapOrError(Obj->getSectionName(Sec));
W.printNumber("Section Name", SecName, Sec->sh_name);
W.printHex("Address", Sec->sh_addr);
W.printHex("Offset", Sec->sh_offset);
W.printNumber("Link", Sec->sh_link);
const uint8_t *VersymBuf =
reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
const ELFDumper<ELFT> *Dumper = this->dumper();
StringRef StrTable = Dumper->getDynamicStringTable();
// Same number of entries in the dynamic symbol table (DT_SYMTAB).
ListScope Syms(W, "Symbols");
for (const Elf_Sym &Sym : Dumper->dynamic_symbols()) {
DictScope S(W, "Symbol");
const Elf_Versym *Versym = reinterpret_cast<const Elf_Versym *>(VersymBuf);
std::string FullSymbolName =
Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */);
W.printNumber("Version", Versym->vs_index & VERSYM_VERSION);
W.printString("Name", FullSymbolName);
VersymBuf += sizeof(Elf_Versym);
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
DictScope SD(W, "SHT_GNU_verdef");
if (!Sec)
return;
const uint8_t *SecStartAddress =
reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size;
const uint8_t *VerdefBuf = SecStartAddress;
const Elf_Shdr *StrTab = unwrapOrError(Obj->getSection(Sec->sh_link));
unsigned VerDefsNum = Sec->sh_info;
while (VerDefsNum--) {
if (VerdefBuf + sizeof(Elf_Verdef) > SecEndAddress)
// FIXME: report_fatal_error is not a good way to report error. We should
// emit a parsing error here and below.
report_fatal_error("invalid offset in the section");
const Elf_Verdef *Verdef = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
DictScope Def(W, "Definition");
W.printNumber("Version", Verdef->vd_version);
W.printEnum("Flags", Verdef->vd_flags, makeArrayRef(SymVersionFlags));
W.printNumber("Index", Verdef->vd_ndx);
W.printNumber("Hash", Verdef->vd_hash);
W.printString("Name", StringRef(reinterpret_cast<const char *>(
Obj->base() + StrTab->sh_offset +
Verdef->getAux()->vda_name)));
if (!Verdef->vd_cnt)
report_fatal_error("at least one definition string must exist");
if (Verdef->vd_cnt > 2)
report_fatal_error("more than one predecessor is not expected");
if (Verdef->vd_cnt == 2) {
const uint8_t *VerdauxBuf =
VerdefBuf + Verdef->vd_aux + Verdef->getAux()->vda_next;
const Elf_Verdaux *Verdaux =
reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf);
W.printString("Predecessor",
StringRef(reinterpret_cast<const char *>(
Obj->base() + StrTab->sh_offset + Verdaux->vda_name)));
}
VerdefBuf += Verdef->vd_next;
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
const Elf_Shdr *Sec) {
DictScope SD(W, "SHT_GNU_verneed");
if (!Sec)
return;
const uint8_t *SecData =
reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
const Elf_Shdr *StrTab = unwrapOrError(Obj->getSection(Sec->sh_link));
const uint8_t *VerneedBuf = SecData;
unsigned VerneedNum = Sec->sh_info;
for (unsigned I = 0; I < VerneedNum; ++I) {
const Elf_Verneed *Verneed =
reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
DictScope Entry(W, "Dependency");
W.printNumber("Version", Verneed->vn_version);
W.printNumber("Count", Verneed->vn_cnt);
W.printString("FileName",
StringRef(reinterpret_cast<const char *>(
Obj->base() + StrTab->sh_offset + Verneed->vn_file)));
const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
ListScope L(W, "Entries");
for (unsigned J = 0; J < Verneed->vn_cnt; ++J) {
const Elf_Vernaux *Vernaux =
reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
DictScope Entry(W, "Entry");
W.printNumber("Hash", Vernaux->vna_hash);
W.printEnum("Flags", Vernaux->vna_flags, makeArrayRef(SymVersionFlags));
W.printNumber("Index", Vernaux->vna_other);
W.printString("Name",
StringRef(reinterpret_cast<const char *>(
Obj->base() + StrTab->sh_offset + Vernaux->vna_name)));
VernauxBuf += Vernaux->vna_next;
}
VerneedBuf += Verneed->vn_next;
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
W.startLine() << "Hash Histogram not implemented!\n";
}
template <class ELFT>
void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
ListScope L(W, "CGProfile");
if (!this->dumper()->getDotCGProfileSec())
return;
auto CGProfile =
unwrapOrError(Obj->template getSectionContentsAsArray<Elf_CGProfile>(
this->dumper()->getDotCGProfileSec()));
for (const Elf_CGProfile &CGPE : CGProfile) {
DictScope D(W, "CGProfileEntry");
W.printNumber("From", this->dumper()->getStaticSymbolName(CGPE.cgp_from),
CGPE.cgp_from);
W.printNumber("To", this->dumper()->getStaticSymbolName(CGPE.cgp_to),
CGPE.cgp_to);
W.printNumber("Weight", CGPE.cgp_weight);
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
ListScope L(W, "Addrsig");
if (!this->dumper()->getDotAddrsigSec())
return;
ArrayRef<uint8_t> Contents = unwrapOrError(
Obj->getSectionContents(this->dumper()->getDotAddrsigSec()));
const uint8_t *Cur = Contents.begin();
const uint8_t *End = Contents.end();
while (Cur != End) {
unsigned Size;
const char *Err;
uint64_t SymIndex = decodeULEB128(Cur, &Size, End, &Err);
if (Err)
reportError(Err);
W.printNumber("Sym", this->dumper()->getStaticSymbolName(SymIndex),
SymIndex);
Cur += Size;
}
}
template <typename ELFT>
static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc,
ScopedPrinter &W) {
switch (NoteType) {
default:
return;
case ELF::NT_GNU_ABI_TAG: {
const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
if (!AbiTag.IsValid) {
W.printString("ABI", "<corrupt GNU_ABI_TAG>");
} else {
W.printString("OS", AbiTag.OSName);
W.printString("ABI", AbiTag.ABI);
}
break;
}
case ELF::NT_GNU_BUILD_ID: {
W.printString("Build ID", getGNUBuildId(Desc));
break;
}
case ELF::NT_GNU_GOLD_VERSION:
W.printString("Version", getGNUGoldVersion(Desc));
break;
case ELF::NT_GNU_PROPERTY_TYPE_0:
ListScope D(W, "Property");
for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
W.printString(Property);
break;
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
ListScope L(W, "Notes");
auto PrintHeader = [&](const typename ELFT::Off Offset,
const typename ELFT::Addr Size) {
W.printHex("Offset", Offset);
W.printHex("Size", Size);
};
auto ProcessNote = [&](const Elf_Note &Note) {
DictScope D2(W, "Note");
StringRef Name = Note.getName();
ArrayRef<uint8_t> Descriptor = Note.getDesc();
Elf_Word Type = Note.getType();
W.printString("Owner", Name);
W.printHex("Data size", Descriptor.size());
if (Name == "GNU") {
W.printString("Type", getGNUNoteTypeName(Type));
printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W);
} else if (Name == "FreeBSD") {
W.printString("Type", getFreeBSDNoteTypeName(Type));
} else if (Name == "AMD") {
W.printString("Type", getAMDNoteTypeName(Type));
const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
if (!N.Type.empty())
W.printString(N.Type, N.Value);
} else if (Name == "AMDGPU") {
W.printString("Type", getAMDGPUNoteTypeName(Type));
const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
if (!N.Type.empty())
W.printString(N.Type, N.Value);
} else {
StringRef NoteType = getGenericNoteTypeName(Type);
if (!NoteType.empty())
W.printString("Type", NoteType);
else
W.printString("Type",
"Unknown (" + to_string(format_hex(Type, 10)) + ")");
}
};
if (Obj->getHeader()->e_type == ELF::ET_CORE) {
for (const auto &P : unwrapOrError(Obj->program_headers())) {
if (P.p_type != PT_NOTE)
continue;
DictScope D(W, "NoteSection");
PrintHeader(P.p_offset, P.p_filesz);
Error Err = Error::success();
for (const auto &Note : Obj->notes(P, Err))
ProcessNote(Note);
if (Err)
error(std::move(Err));
}
} else {
for (const auto &S : unwrapOrError(Obj->sections())) {
if (S.sh_type != SHT_NOTE)
continue;
DictScope D(W, "NoteSection");
PrintHeader(S.sh_offset, S.sh_size);
Error Err = Error::success();
for (const auto &Note : Obj->notes(S, Err))
ProcessNote(Note);
if (Err)
error(std::move(Err));
}
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
ListScope L(W, "LinkerOptions");
for (const Elf_Shdr &Shdr : unwrapOrError(Obj->sections())) {
if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS)
continue;
ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Shdr));
for (const uint8_t *P = Contents.begin(), *E = Contents.end(); P < E; ) {
StringRef Key = StringRef(reinterpret_cast<const char *>(P));
StringRef Value =
StringRef(reinterpret_cast<const char *>(P) + Key.size() + 1);
W.printString(Key, Value);
P = P + Key.size() + Value.size() + 2;
}
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
auto PrintEntry = [&](const Elf_Addr *E) {
W.printHex("Address", Parser.getGotAddress(E));
W.printNumber("Access", Parser.getGotOffset(E));
W.printHex("Initial", *E);
};
DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT");
W.printHex("Canonical gp value", Parser.getGp());
{
ListScope RS(W, "Reserved entries");
{
DictScope D(W, "Entry");
PrintEntry(Parser.getGotLazyResolver());
W.printString("Purpose", StringRef("Lazy resolver"));
}
if (Parser.getGotModulePointer()) {
DictScope D(W, "Entry");
PrintEntry(Parser.getGotModulePointer());
W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
}
}
{
ListScope LS(W, "Local entries");
for (auto &E : Parser.getLocalEntries()) {
DictScope D(W, "Entry");
PrintEntry(&E);
}
}
if (Parser.IsStatic)
return;
{
ListScope GS(W, "Global entries");
for (auto &E : Parser.getGlobalEntries()) {
DictScope D(W, "Entry");
PrintEntry(&E);
const Elf_Sym *Sym = Parser.getGotSym(&E);
W.printHex("Value", Sym->st_value);
W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
unsigned SectionIndex = 0;
StringRef SectionName;
this->dumper()->getSectionNameIndex(
Sym, this->dumper()->dynamic_symbols().begin(), SectionName,
SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
std::string SymName = this->dumper()->getFullSymbolName(
Sym, this->dumper()->getDynamicStringTable(), true);
W.printNumber("Name", SymName, Sym->st_name);
}
}
W.printNumber("Number of TLS and multi-GOT entries",
uint64_t(Parser.getOtherEntries().size()));
}
template <class ELFT>
void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
auto PrintEntry = [&](const Elf_Addr *E) {
W.printHex("Address", Parser.getPltAddress(E));
W.printHex("Initial", *E);
};
DictScope GS(W, "PLT GOT");
{
ListScope RS(W, "Reserved entries");
{
DictScope D(W, "Entry");
PrintEntry(Parser.getPltLazyResolver());
W.printString("Purpose", StringRef("PLT lazy resolver"));
}
if (auto E = Parser.getPltModulePointer()) {
DictScope D(W, "Entry");
PrintEntry(E);
W.printString("Purpose", StringRef("Module pointer"));
}
}
{
ListScope LS(W, "Entries");
for (auto &E : Parser.getPltEntries()) {
DictScope D(W, "Entry");
PrintEntry(&E);
const Elf_Sym *Sym = Parser.getPltSym(&E);
W.printHex("Value", Sym->st_value);
W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
unsigned SectionIndex = 0;
StringRef SectionName;
this->dumper()->getSectionNameIndex(
Sym, this->dumper()->dynamic_symbols().begin(), SectionName,
SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
std::string SymName =
this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true);
W.printNumber("Name", SymName, Sym->st_name);
}
}
}
Reference in New Issue View Git Blame Copy Permalink