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freebsd-dev/contrib/llvm/tools/llvm-readobj/ELFDumper.cpp
Dimitry Andric b40b48b876 Merge llvm, clang, lld, lldb, compiler-rt and libc++ r308421, and update 
build glue.
2017-07-19 19:41:41 +00:00

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//===- ELFDumper.cpp - ELF-specific dumper --------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file implements the ELF-specific dumper for llvm-readobj.
///
//===----------------------------------------------------------------------===//
#include "ARMEHABIPrinter.h"
#include "Error.h"
#include "ObjDumper.h"
#include "StackMapPrinter.h"
#include "llvm-readobj.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/BinaryFormat/ELF.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/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/FormattedStream.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_Shdr = typename ELFO::Elf_Shdr; \
using Elf_Sym = typename ELFO::Elf_Sym; \
using Elf_Dyn = typename ELFO::Elf_Dyn; \
using Elf_Dyn_Range = typename ELFO::Elf_Dyn_Range; \
using Elf_Rel = typename ELFO::Elf_Rel; \
using Elf_Rela = typename ELFO::Elf_Rela; \
using Elf_Rel_Range = typename ELFO::Elf_Rel_Range; \
using Elf_Rela_Range = typename ELFO::Elf_Rela_Range; \
using Elf_Phdr = typename ELFO::Elf_Phdr; \
using Elf_Half = typename ELFO::Elf_Half; \
using Elf_Ehdr = typename ELFO::Elf_Ehdr; \
using Elf_Word = typename ELFO::Elf_Word; \
using Elf_Hash = typename ELFO::Elf_Hash; \
using Elf_GnuHash = typename ELFO::Elf_GnuHash; \
using Elf_Sym_Range = typename ELFO::Elf_Sym_Range; \
using Elf_Versym = typename ELFO::Elf_Versym; \
using Elf_Verneed = typename ELFO::Elf_Verneed; \
using Elf_Vernaux = typename ELFO::Elf_Vernaux; \
using Elf_Verdef = typename ELFO::Elf_Verdef; \
using Elf_Verdaux = typename ELFO::Elf_Verdaux; \
using uintX_t = typename ELFO::uintX_t;
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) {}
/// \brief Address in current address space.
const void *Addr = nullptr;
/// \brief Size in bytes of the region.
uint64_t Size = 0;
/// \brief 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 ELFFile<ELFT> *Obj, ScopedPrinter &Writer);
void printFileHeaders() override;
void printSections() override;
void printRelocations() override;
void printDynamicRelocations() override;
void printSymbols() override;
void printDynamicSymbols() override;
void printUnwindInfo() override;
void printDynamicTable() override;
void printNeededLibraries() override;
void printProgramHeaders() 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 printAMDGPUCodeObjectMetadata() override;
void printStackMap() const override;
void printHashHistogram() override;
void printNotes() override;
private:
std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle;
TYPEDEF_ELF_TYPES(ELFT)
DynRegionInfo checkDRI(DynRegionInfo DRI) {
if (DRI.Addr < Obj->base() ||
(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({Obj->base() + P->p_offset, P->p_filesz, EntSize});
}
DynRegionInfo createDRIFrom(const Elf_Shdr *S) {
return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize});
}
void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments);
void printValue(uint64_t Type, uint64_t Value);
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 ELFO *Obj;
DynRegionInfo DynRelRegion;
DynRegionInfo DynRelaRegion;
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;
StringRef DynSymtabName;
ArrayRef<Elf_Word> ShndxTable;
const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version
const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r
const Elf_Shdr *dot_gnu_version_d_sec = 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 {
return DynamicTable.getAsArrayRef<Elf_Dyn>();
}
Elf_Sym_Range dynamic_symbols() const {
return DynSymRegion.getAsArrayRef<Elf_Sym>();
}
Elf_Rel_Range dyn_rels() const;
Elf_Rela_Range dyn_relas() const;
std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable,
bool IsDynamic) const;
void printSymbolsHelper(bool IsDynamic) const;
const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; }
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 &getDynPLTRelRegion() const { return DynPLTRelRegion; }
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);
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 <typename ELFT> class DumpStyle {
public:
using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr;
using Elf_Sym = typename ELFFile<ELFT>::Elf_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 printSections(const ELFFile<ELFT> *Obj) = 0;
virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0;
virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0;
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) = 0;
virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0;
virtual void printNotes(const ELFFile<ELFT> *Obj) = 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 printSections(const ELFO *Obj) override;
void printSymbols(const ELFO *Obj) override;
void printDynamicSymbols(const ELFO *Obj) override;
void printDynamicRelocations(const ELFO *Obj) override;
void printSymtabMessage(const ELFO *Obj, StringRef Name,
size_t Offset) override;
void printProgramHeaders(const ELFO *Obj) override;
void printHashHistogram(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
private:
struct Field {
StringRef Str;
unsigned Column;
Field(StringRef S, unsigned Col) : Str(S), Column(Col) {}
Field(unsigned Col) : Str(""), 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);
}
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 printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
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);
};
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 printSections(const ELFO *Obj) override;
void printSymbols(const ELFO *Obj) override;
void printDynamicSymbols(const ELFO *Obj) override;
void printDynamicRelocations(const ELFO *Obj) override;
void printProgramHeaders(const ELFO *Obj) override;
void printHashHistogram(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
private:
void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab);
void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel);
void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
StringRef StrTable, bool IsDynamic) override;
ScopedPrinter &W;
};
} // end anonymous namespace
namespace llvm {
template <class ELFT>
static std::error_code createELFDumper(const ELFFile<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->getELFFile(), Writer, Result);
// Big-endian 32-bit
if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
return createELFDumper(ELFObj->getELFFile(), Writer, Result);
// Little-endian 64-bit
if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
return createELFDumper(ELFObj->getELFFile(), Writer, Result);
// Big-endian 64-bit
if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
return createELFDumper(ELFObj->getELFFile(), 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 vn_size = sec->sh_size; // Size of section in bytes
unsigned vn_count = sec->sh_info; // Number of Verneed entries
const char *sec_start = (const char *)Obj->base() + sec->sh_offset;
const char *sec_end = sec_start + vn_size;
// The first Verneed entry is at the start of the section.
const char *p = sec_start;
for (unsigned i = 0; i < vn_count; i++) {
if (p + sizeof(Elf_Verneed) > sec_end)
report_fatal_error("Section ended unexpectedly while scanning "
"version needed records.");
const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
if (vn->vn_version != ELF::VER_NEED_CURRENT)
report_fatal_error("Unexpected verneed version");
// Iterate through the Vernaux entries
const char *paux = p + vn->vn_aux;
for (unsigned j = 0; j < vn->vn_cnt; j++) {
if (paux + sizeof(Elf_Vernaux) > sec_end)
report_fatal_error("Section ended unexpected while scanning auxiliary "
"version needed records.");
const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
size_t index = vna->vna_other & ELF::VERSYM_VERSION;
if (index >= VersionMap.size())
VersionMap.resize(index + 1);
VersionMap[index] = VersionMapEntry(vna);
paux += vna->vna_next;
}
p += vn->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 vd_size = sec->sh_size; // Size of section in bytes
unsigned vd_count = sec->sh_info; // Number of Verdef entries
const char *sec_start = (const char *)Obj->base() + sec->sh_offset;
const char *sec_end = sec_start + vd_size;
// The first Verdef entry is at the start of the section.
const char *p = sec_start;
for (unsigned i = 0; i < vd_count; i++) {
if (p + sizeof(Elf_Verdef) > sec_end)
report_fatal_error("Section ended unexpectedly while scanning "
"version definitions.");
const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
if (vd->vd_version != ELF::VER_DEF_CURRENT)
report_fatal_error("Unexpected verdef version");
size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
if (index >= VersionMap.size())
VersionMap.resize(index + 1);
VersionMap[index] = VersionMapEntry(vd);
p += vd->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 || !dot_gnu_version_sec)
return;
// Has the VersionMap already been loaded?
if (VersionMap.size() > 0)
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 (dot_gnu_version_d_sec)
LoadVersionDefs(dot_gnu_version_d_sec);
if (dot_gnu_version_r_sec)
LoadVersionNeeds(dot_gnu_version_r_sec);
}
template <typename ELFO, class ELFT>
static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj,
const typename ELFO::Elf_Shdr *Sec,
ScopedPrinter &W) {
DictScope SS(W, "Version symbols");
if (!Sec)
return;
StringRef Name = unwrapOrError(Obj->getSectionName(Sec));
W.printNumber("Section Name", Name, Sec->sh_name);
W.printHex("Address", Sec->sh_addr);
W.printHex("Offset", Sec->sh_offset);
W.printNumber("Link", Sec->sh_link);
const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset;
StringRef StrTable = Dumper->getDynamicStringTable();
// Same number of entries in the dynamic symbol table (DT_SYMTAB).
ListScope Syms(W, "Symbols");
for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) {
DictScope S(W, "Symbol");
std::string FullSymbolName =
Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */);
W.printNumber("Version", *P);
W.printString("Name", FullSymbolName);
P += sizeof(typename ELFO::Elf_Half);
}
}
static const EnumEntry<unsigned> SymVersionFlags[] = {
{"Base", "BASE", VER_FLG_BASE},
{"Weak", "WEAK", VER_FLG_WEAK},
{"Info", "INFO", VER_FLG_INFO}};
template <typename ELFO, class ELFT>
static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper,
const ELFO *Obj,
const typename ELFO::Elf_Shdr *Sec,
ScopedPrinter &W) {
using VerDef = typename ELFO::Elf_Verdef;
using VerdAux = typename ELFO::Elf_Verdaux;
DictScope SD(W, "SHT_GNU_verdef");
if (!Sec)
return;
// The number of entries in the section SHT_GNU_verdef
// is determined by DT_VERDEFNUM tag.
unsigned VerDefsNum = 0;
for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) {
if (Dyn.d_tag == DT_VERDEFNUM)
VerDefsNum = Dyn.d_un.d_val;
}
const uint8_t *SecStartAddress =
(const uint8_t *)Obj->base() + Sec->sh_offset;
const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size;
const uint8_t *P = SecStartAddress;
const typename ELFO::Elf_Shdr *StrTab =
unwrapOrError(Obj->getSection(Sec->sh_link));
while (VerDefsNum--) {
if (P + sizeof(VerDef) > SecEndAddress)
report_fatal_error("invalid offset in the section");
auto *VD = reinterpret_cast<const VerDef *>(P);
DictScope Def(W, "Definition");
W.printNumber("Version", VD->vd_version);
W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags));
W.printNumber("Index", VD->vd_ndx);
W.printNumber("Hash", VD->vd_hash);
W.printString("Name",
StringRef((const char *)(Obj->base() + StrTab->sh_offset +
VD->getAux()->vda_name)));
if (!VD->vd_cnt)
report_fatal_error("at least one definition string must exist");
if (VD->vd_cnt > 2)
report_fatal_error("more than one predecessor is not expected");
if (VD->vd_cnt == 2) {
const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next;
const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux);
W.printString("Predecessor",
StringRef((const char *)(Obj->base() + StrTab->sh_offset +
Aux->vda_name)));
}
P += VD->vd_next;
}
}
template <typename ELFO, class ELFT>
static void printVersionDependencySection(ELFDumper<ELFT> *Dumper,
const ELFO *Obj,
const typename ELFO::Elf_Shdr *Sec,
ScopedPrinter &W) {
using VerNeed = typename ELFO::Elf_Verneed;
using VernAux = typename ELFO::Elf_Vernaux;
DictScope SD(W, "SHT_GNU_verneed");
if (!Sec)
return;
unsigned VerNeedNum = 0;
for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table())
if (Dyn.d_tag == DT_VERNEEDNUM)
VerNeedNum = Dyn.d_un.d_val;
const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset;
const typename ELFO::Elf_Shdr *StrTab =
unwrapOrError(Obj->getSection(Sec->sh_link));
const uint8_t *P = SecData;
for (unsigned I = 0; I < VerNeedNum; ++I) {
const VerNeed *Need = reinterpret_cast<const VerNeed *>(P);
DictScope Entry(W, "Dependency");
W.printNumber("Version", Need->vn_version);
W.printNumber("Count", Need->vn_cnt);
W.printString("FileName",
StringRef((const char *)(Obj->base() + StrTab->sh_offset +
Need->vn_file)));
const uint8_t *PAux = P + Need->vn_aux;
for (unsigned J = 0; J < Need->vn_cnt; ++J) {
const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux);
DictScope Entry(W, "Entry");
W.printNumber("Hash", Aux->vna_hash);
W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags));
W.printNumber("Index", Aux->vna_other);
W.printString("Name",
StringRef((const char *)(Obj->base() + StrTab->sh_offset +
Aux->vna_name)));
PAux += Aux->vna_next;
}
P += Need->vn_next;
}
}
template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() {
// Dump version symbol section.
printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W);
// Dump version definition section.
printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W);
// Dump version dependency section.
printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W);
}
template <typename ELFT>
StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab,
const Elf_Sym *symb,
bool &IsDefault) const {
// This is a dynamic symbol. Look in the GNU symbol version table.
if (!dot_gnu_version_sec) {
// No version table.
IsDefault = false;
return StringRef("");
}
// Determine the position in the symbol table of this entry.
size_t entry_index = (reinterpret_cast<uintptr_t>(symb) -
reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) /
sizeof(Elf_Sym);
// Get the corresponding version index entry
const Elf_Versym *vs = unwrapOrError(
Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index));
size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
// Special markers for unversioned symbols.
if (version_index == ELF::VER_NDX_LOCAL ||
version_index == ELF::VER_NDX_GLOBAL) {
IsDefault = false;
return StringRef("");
}
// Lookup this symbol in the version table
LoadVersionMap();
if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
reportError("Invalid version entry");
const VersionMapEntry &entry = VersionMap[version_index];
// Get the version name string
size_t name_offset;
if (entry.isVerdef()) {
// The first Verdaux entry holds the name.
name_offset = entry.getVerdef()->getAux()->vda_name;
IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
} else {
name_offset = entry.getVernaux()->vna_name;
IsDefault = false;
}
if (name_offset >= StrTab.size())
reportError("Invalid string offset");
return StringRef(StrTab.data() + name_offset);
}
template <typename ELFT>
std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol,
StringRef StrTable,
bool IsDynamic) const {
StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable));
if (!IsDynamic)
return SymbolName;
std::string FullSymbolName(SymbolName);
bool IsDefault;
StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault);
FullSymbolName += (IsDefault ? "@@" : "@");
FullSymbolName += Version;
return FullSymbolName;
}
template <typename ELFT>
static void
getSectionNameIndex(const ELFFile<ELFT> &Obj, const typename ELFT::Sym *Symbol,
const typename ELFT::Sym *FirstSym,
ArrayRef<typename ELFT::Word> ShndxTable,
StringRef &SectionName, unsigned &SectionIndex) {
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 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},
{"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
{"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX},
{"ARM", "ARM", ELF::ELFOSABI_ARM},
{"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE}
};
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 AVR 8-bit microcontroller"),
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_WEBASSEMBLY, "EM_WEBASSEMBLY"),
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> ElfSymbolTypes[] = {
{"None", "NOTYPE", ELF::STT_NOTYPE},
{"Object", "OBJECT", ELF::STT_OBJECT},
{"Function", "FUNC", ELF::STT_FUNC},
{"Section", "SECTION", ELF::STT_SECTION},
{"File", "FILE", ELF::STT_FILE},
{"Common", "COMMON", ELF::STT_COMMON},
{"TLS", "TLS", ELF::STT_TLS},
{"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}};
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);
}
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);
}
}
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";
return "";
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";
}
return "";
}
}
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[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6)
};
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>
ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer)
: ObjDumper(Writer), Obj(Obj) {
SmallVector<const Elf_Phdr *, 4> LoadSegments;
for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) {
if (Phdr.p_type == ELF::PT_DYNAMIC) {
DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn));
continue;
}
if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0)
continue;
LoadSegments.push_back(&Phdr);
}
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
switch (Sec.sh_type) {
case ELF::SHT_SYMTAB:
if (DotSymtabSec != nullptr)
reportError("Multilpe SHT_SYMTAB");
DotSymtabSec = &Sec;
break;
case ELF::SHT_DYNSYM:
if (DynSymRegion.Size)
reportError("Multilpe SHT_DYNSYM");
DynSymRegion = createDRIFrom(&Sec);
// This is only used (if Elf_Shdr present)for naming section in GNU style
DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec));
break;
case ELF::SHT_SYMTAB_SHNDX:
ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec));
break;
case ELF::SHT_GNU_versym:
if (dot_gnu_version_sec != nullptr)
reportError("Multiple SHT_GNU_versym");
dot_gnu_version_sec = &Sec;
break;
case ELF::SHT_GNU_verdef:
if (dot_gnu_version_d_sec != nullptr)
reportError("Multiple SHT_GNU_verdef");
dot_gnu_version_d_sec = &Sec;
break;
case ELF::SHT_GNU_verneed:
if (dot_gnu_version_r_sec != nullptr)
reportError("Multilpe SHT_GNU_verneed");
dot_gnu_version_r_sec = &Sec;
break;
}
}
parseDynamicTable(LoadSegments);
if (opts::Output == opts::GNU)
ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this));
else
ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this));
}
template <typename ELFT>
void ELFDumper<ELFT>::parseDynamicTable(
ArrayRef<const Elf_Phdr *> LoadSegments) {
auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * {
const Elf_Phdr *const *I = std::upper_bound(
LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>);
if (I == LoadSegments.begin())
report_fatal_error("Virtual address is not in any segment");
--I;
const Elf_Phdr &Phdr = **I;
uint64_t Delta = VAddr - Phdr.p_vaddr;
if (Delta >= Phdr.p_filesz)
report_fatal_error("Virtual address is not in any segment");
return Obj->base() + Phdr.p_offset + Delta;
};
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.getPtr()));
break;
case ELF::DT_GNU_HASH:
GnuHashTable =
reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr()));
break;
case ELF::DT_STRTAB:
StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr());
break;
case ELF::DT_STRSZ:
StringTableSize = Dyn.getVal();
break;
case ELF::DT_SYMTAB:
DynSymRegion.Addr = toMappedAddr(Dyn.getPtr());
DynSymRegion.EntSize = sizeof(Elf_Sym);
break;
case ELF::DT_RELA:
DynRelaRegion.Addr = toMappedAddr(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.getPtr());
break;
case ELF::DT_RELSZ:
DynRelRegion.Size = Dyn.getVal();
break;
case ELF::DT_RELENT:
DynRelRegion.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.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<class ELFT>
void ELFDumper<ELFT>::printFileHeaders() {
ELFDumperStyle->printFileHeaders(Obj);
}
template<class ELFT>
void ELFDumper<ELFT>::printSections() {
ELFDumperStyle->printSections(Obj);
}
template<class ELFT>
void ELFDumper<ELFT>::printRelocations() {
ELFDumperStyle->printRelocations(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() {
ELFDumperStyle->printProgramHeaders(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() {
ELFDumperStyle->printDynamicRelocations(Obj);
}
template<class ELFT>
void ELFDumper<ELFT>::printSymbols() {
ELFDumperStyle->printSymbols(Obj);
}
template<class ELFT>
void ELFDumper<ELFT>::printDynamicSymbols() {
ELFDumperStyle->printDynamicSymbols(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() {
ELFDumperStyle->printHashHistogram(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printNotes() {
ELFDumperStyle->printNotes(Obj);
}
#define LLVM_READOBJ_TYPE_CASE(name) \
case DT_##name: return #name
static const char *getTypeString(unsigned Arch, uint64_t Type) {
switch (Arch) {
case EM_HEXAGON:
switch (Type) {
LLVM_READOBJ_TYPE_CASE(HEXAGON_SYMSZ);
LLVM_READOBJ_TYPE_CASE(HEXAGON_VER);
LLVM_READOBJ_TYPE_CASE(HEXAGON_PLT);
}
case EM_MIPS:
switch (Type) {
LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL);
LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION);
LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS);
LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS);
LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO);
LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO);
LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO);
LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM);
LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP);
LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT);
LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS);
}
}
switch (Type) {
LLVM_READOBJ_TYPE_CASE(BIND_NOW);
LLVM_READOBJ_TYPE_CASE(DEBUG);
LLVM_READOBJ_TYPE_CASE(FINI);
LLVM_READOBJ_TYPE_CASE(FINI_ARRAY);
LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ);
LLVM_READOBJ_TYPE_CASE(FLAGS);
LLVM_READOBJ_TYPE_CASE(FLAGS_1);
LLVM_READOBJ_TYPE_CASE(HASH);
LLVM_READOBJ_TYPE_CASE(INIT);
LLVM_READOBJ_TYPE_CASE(INIT_ARRAY);
LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ);
LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY);
LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ);
LLVM_READOBJ_TYPE_CASE(JMPREL);
LLVM_READOBJ_TYPE_CASE(NEEDED);
LLVM_READOBJ_TYPE_CASE(NULL);
LLVM_READOBJ_TYPE_CASE(PLTGOT);
LLVM_READOBJ_TYPE_CASE(PLTREL);
LLVM_READOBJ_TYPE_CASE(PLTRELSZ);
LLVM_READOBJ_TYPE_CASE(REL);
LLVM_READOBJ_TYPE_CASE(RELA);
LLVM_READOBJ_TYPE_CASE(RELENT);
LLVM_READOBJ_TYPE_CASE(RELSZ);
LLVM_READOBJ_TYPE_CASE(RELAENT);
LLVM_READOBJ_TYPE_CASE(RELASZ);
LLVM_READOBJ_TYPE_CASE(RPATH);
LLVM_READOBJ_TYPE_CASE(RUNPATH);
LLVM_READOBJ_TYPE_CASE(SONAME);
LLVM_READOBJ_TYPE_CASE(STRSZ);
LLVM_READOBJ_TYPE_CASE(STRTAB);
LLVM_READOBJ_TYPE_CASE(SYMBOLIC);
LLVM_READOBJ_TYPE_CASE(SYMENT);
LLVM_READOBJ_TYPE_CASE(SYMTAB);
LLVM_READOBJ_TYPE_CASE(TEXTREL);
LLVM_READOBJ_TYPE_CASE(VERDEF);
LLVM_READOBJ_TYPE_CASE(VERDEFNUM);
LLVM_READOBJ_TYPE_CASE(VERNEED);
LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
LLVM_READOBJ_TYPE_CASE(VERSYM);
LLVM_READOBJ_TYPE_CASE(RELACOUNT);
LLVM_READOBJ_TYPE_CASE(RELCOUNT);
LLVM_READOBJ_TYPE_CASE(GNU_HASH);
LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT);
LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT);
LLVM_READOBJ_TYPE_CASE(AUXILIARY);
LLVM_READOBJ_TYPE_CASE(FILTER);
default: return "unknown";
}
}
#undef LLVM_READOBJ_TYPE_CASE
#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, 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>::printValue(uint64_t Type, uint64_t Value) {
raw_ostream &OS = W.getOStream();
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:
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_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() {
W.startLine() << "UnwindInfo not implemented.\n";
}
namespace {
template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() {
const unsigned Machine = Obj->getHeader()->e_machine;
if (Machine == EM_ARM) {
ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx(
W, Obj, DotSymtabSec);
return Ctx.PrintUnwindInformation();
}
W.startLine() << "UnwindInfo not implemented.\n";
}
} // end anonymous namespace
template<class ELFT>
void ELFDumper<ELFT>::printDynamicTable() {
auto I = dynamic_table().begin();
auto E = dynamic_table().end();
if (I == E)
return;
--E;
while (I != E && E->getTag() == ELF::DT_NULL)
--E;
if (E->getTag() != ELF::DT_NULL)
++E;
++E;
ptrdiff_t Total = std::distance(I, E);
if (Total == 0)
return;
raw_ostream &OS = W.getOStream();
W.startLine() << "DynamicSection [ (" << Total << " entries)\n";
bool Is64 = ELFT::Is64Bits;
W.startLine()
<< " Tag" << (Is64 ? " " : " ") << "Type"
<< " " << "Name/Value\n";
while (I != E) {
const Elf_Dyn &Entry = *I;
uintX_t Tag = Entry.getTag();
++I;
W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " "
<< format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag));
printValue(Tag, Entry.getVal());
OS << "\n";
}
W.startLine() << "]\n";
}
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));
std::stable_sort(Libs.begin(), Libs.end());
for (const auto &L : Libs) {
outs() << " " << 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() {
outs() << "LoadName: " << SOName << '\n';
}
template <class ELFT>
void ELFDumper<ELFT>::printAttributes() {
W.startLine() << "Attributes not implemented.\n";
}
namespace {
template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() {
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" << 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 GOTEntry = typename ELFO::Elf_Addr;
MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj,
Elf_Dyn_Range DynTable, ScopedPrinter &W);
void parseGOT();
void parsePLT();
private:
ELFDumper<ELFT> *Dumper;
const ELFO *Obj;
ScopedPrinter &W;
Optional<uint64_t> DtPltGot;
Optional<uint64_t> DtLocalGotNum;
Optional<uint64_t> DtGotSym;
Optional<uint64_t> DtMipsPltGot;
Optional<uint64_t> DtJmpRel;
std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt,
const GOTEntry *It);
void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt,
const GOTEntry *It, const Elf_Sym *Sym,
StringRef StrTable, bool IsDynamic);
void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt,
const GOTEntry *It, StringRef Purpose);
void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt,
const GOTEntry *It, StringRef StrTable,
const Elf_Sym *Sym);
};
} // end anonymous namespace
template <class ELFT>
MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj,
Elf_Dyn_Range DynTable, ScopedPrinter &W)
: Dumper(Dumper), Obj(Obj), W(W) {
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;
}
}
}
template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() {
// 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
if (!DtPltGot) {
W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
return;
}
if (!DtLocalGotNum) {
W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
return;
}
if (!DtGotSym) {
W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
return;
}
StringRef StrTable = Dumper->getDynamicStringTable();
const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin();
const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end();
std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
if (*DtGotSym > DynSymTotal)
report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols");
std::size_t GlobalGotNum = DynSymTotal - *DtGotSym;
if (*DtLocalGotNum + GlobalGotNum == 0) {
W.startLine() << "GOT is empty.\n";
return;
}
const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot);
if (!GOTShdr)
report_fatal_error("There is no not empty GOT section at 0x" +
Twine::utohexstr(*DtPltGot));
ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr));
if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT))
report_fatal_error("Number of GOT entries exceeds the size of GOT section");
const GOTEntry *GotBegin = makeGOTIter(GOT, 0);
const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum);
const GOTEntry *It = GotBegin;
DictScope GS(W, "Primary GOT");
W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0);
{
ListScope RS(W, "Reserved entries");
{
DictScope D(W, "Entry");
printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
W.printString("Purpose", StringRef("Lazy resolver"));
}
if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) {
DictScope D(W, "Entry");
printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
}
}
{
ListScope LS(W, "Local entries");
for (; It != GotLocalEnd; ++It) {
DictScope D(W, "Entry");
printGotEntry(GOTShdr->sh_addr, GotBegin, It);
}
}
{
ListScope GS(W, "Global entries");
const GOTEntry *GotGlobalEnd =
makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum);
const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym;
for (; It != GotGlobalEnd; ++It) {
DictScope D(W, "Entry");
printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable,
true);
}
}
std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum;
W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
}
template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() {
if (!DtMipsPltGot) {
W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n";
return;
}
if (!DtJmpRel) {
W.startLine() << "Cannot find JMPREL dynamic table tag.\n";
return;
}
const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot);
if (!PLTShdr)
report_fatal_error("There is no not empty PLTGOT section at 0x " +
Twine::utohexstr(*DtMipsPltGot));
ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr));
const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel);
if (!PLTRelShdr)
report_fatal_error("There is no not empty RELPLT section at 0x" +
Twine::utohexstr(*DtJmpRel));
const Elf_Shdr *SymTable =
unwrapOrError(Obj->getSection(PLTRelShdr->sh_link));
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable));
const GOTEntry *PLTBegin = makeGOTIter(PLT, 0);
const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT));
const GOTEntry *It = PLTBegin;
DictScope GS(W, "PLT GOT");
{
ListScope RS(W, "Reserved entries");
printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver");
if (It != PLTEnd)
printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer");
}
{
ListScope GS(W, "Entries");
switch (PLTRelShdr->sh_type) {
case ELF::SHT_REL:
for (const Elf_Rel &Rel : unwrapOrError(Obj->rels(PLTRelShdr))) {
const Elf_Sym *Sym =
unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable));
printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym);
if (++It == PLTEnd)
break;
}
break;
case ELF::SHT_RELA:
for (const Elf_Rela &Rel : unwrapOrError(Obj->relas(PLTRelShdr))) {
const Elf_Sym *Sym =
unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable));
printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym);
if (++It == PLTEnd)
break;
}
break;
}
}
}
template <class ELFT>
std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
return GOT.size() / sizeof(GOTEntry);
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::GOTEntry *
MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
const char *Data = reinterpret_cast<const char *>(GOT.data());
return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry));
}
template <class ELFT>
void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr,
const GOTEntry *BeginIt,
const GOTEntry *It) {
int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
W.printHex("Address", GotAddr + Offset);
W.printNumber("Access", Offset - 0x7ff0);
W.printHex("Initial", *It);
}
template <class ELFT>
void MipsGOTParser<ELFT>::printGlobalGotEntry(
uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It,
const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) {
printGotEntry(GotAddr, BeginIt, It);
W.printHex("Value", Sym->st_value);
W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
unsigned SectionIndex = 0;
StringRef SectionName;
getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(),
Dumper->getShndxTable(), SectionName, SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
std::string FullSymbolName =
Dumper->getFullSymbolName(Sym, StrTable, IsDynamic);
W.printNumber("Name", FullSymbolName, Sym->st_name);
}
template <class ELFT>
void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr,
const GOTEntry *BeginIt,
const GOTEntry *It, StringRef Purpose) {
DictScope D(W, "Entry");
int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
W.printHex("Address", PLTAddr + Offset);
W.printHex("Initial", *It);
W.printString("Purpose", Purpose);
}
template <class ELFT>
void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr,
const GOTEntry *BeginIt,
const GOTEntry *It, StringRef StrTable,
const Elf_Sym *Sym) {
DictScope D(W, "Entry");
int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
W.printHex("Address", PLTAddr + Offset);
W.printHex("Initial", *It);
W.printHex("Value", Sym->st_value);
W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
unsigned SectionIndex = 0;
StringRef SectionName;
getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(),
Dumper->getShndxTable(), SectionName, SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true);
W.printNumber("Name", FullSymbolName, Sym->st_name);
}
template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
if (Obj->getHeader()->e_machine != EM_MIPS) {
W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
return;
}
MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W);
GOTParser.parseGOT();
GOTParser.parsePLT();
}
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}
};
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 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 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 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>::printAMDGPUCodeObjectMetadata() {
const Elf_Shdr *Shdr = findSectionByName(*Obj, ".note");
if (!Shdr) {
W.startLine() << "There is no .note section in the file.\n";
return;
}
ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr));
const uint32_t CodeObjectMetadataNoteType = 10;
for (auto I = reinterpret_cast<const Elf_Word *>(&Sec[0]),
E = I + Sec.size()/4; I != E;) {
uint32_t NameSZ = I[0];
uint32_t DescSZ = I[1];
uint32_t Type = I[2];
I += 3;
StringRef Name;
if (NameSZ) {
Name = StringRef(reinterpret_cast<const char *>(I), NameSZ - 1);
I += alignTo<4>(NameSZ)/4;
}
if (Name == "AMD" && Type == CodeObjectMetadataNoteType) {
StringRef Desc(reinterpret_cast<const char *>(I), DescSZ);
W.printString(Desc);
}
I += alignTo<4>(DescSZ)/4;
}
}
template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
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;
StringRef StackMapContents;
ArrayRef<uint8_t> StackMapContentsArray =
unwrapOrError(Obj->getSectionContents(StackMapSection));
prettyPrintStackMap(outs(), StackMapV2Parser<ELFT::TargetEndianness>(
StackMapContentsArray));
}
template <class ELFT> void ELFDumper<ELFT>::printGroupSections() {
ELFDumperStyle->printGroupSections(Obj);
}
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> 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);
Str = "0x" + to_hexString(e->e_flags);
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 = to_string(e->e_shnum);
printFields(OS, "Number of section headers:", Str);
Str = to_string(e->e_shstrndx);
printFields(OS, "Section header string table index:", Str);
}
template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) {
uint32_t SectionIndex = 0;
bool HasGroups = false;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (Sec.sh_type == ELF::SHT_GROUP) {
HasGroups = true;
const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link));
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab));
const Elf_Sym *Signature =
unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info));
ArrayRef<Elf_Word> Data = unwrapOrError(
Obj->template getSectionContentsAsArray<Elf_Word>(&Sec));
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
OS << "\n" << getGroupType(Data[0]) << " group section ["
<< format_decimal(SectionIndex, 5) << "] `" << Name << "' ["
<< StrTable.data() + Signature->st_name << "] contains "
<< (Data.size() - 1) << " sections:\n"
<< " [Index] Name\n";
for (auto &Ndx : Data.slice(1)) {
auto Sec = unwrapOrError(Obj->getSection(Ndx));
const StringRef Name = unwrapOrError(Obj->getSectionName(Sec));
OS << " [" << format_decimal(Ndx, 5) << "] " << Name
<< "\n";
}
}
++SectionIndex;
}
if (!HasGroups)
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) {
std::string Offset, Info, Addend, Value;
SmallString<32> RelocName;
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab));
StringRef TargetName;
const Elf_Sym *Sym = nullptr;
unsigned Width = ELFT::Is64Bits ? 16 : 8;
unsigned Bias = ELFT::Is64Bits ? 8 : 0;
// First two fields are bit width dependent. The rest of them are after are
// fixed width.
Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias};
Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName);
Sym = unwrapOrError(Obj->getRelocationSymbol(&R, 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) {
TargetName = unwrapOrError(Sym->getName(StrTable));
}
if (Sym && IsRela) {
if (R.r_addend < 0)
Addend = " - ";
else
Addend = " + ";
}
Offset = to_string(format_hex_no_prefix(R.r_offset, Width));
Info = to_string(format_hex_no_prefix(R.r_info, Width));
int64_t RelAddend = R.r_addend;
if (IsRela)
Addend += to_hexString(std::abs(RelAddend), false);
if (Sym)
Value = to_string(format_hex_no_prefix(Sym->getValue(), Width));
Fields[0].Str = Offset;
Fields[1].Str = Info;
Fields[2].Str = RelocName;
Fields[3].Str = Value;
Fields[4].Str = TargetName;
for (auto &field : Fields)
printField(field);
OS << Addend;
OS << "\n";
}
static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) {
if (Is64)
OS << " Offset Info Type"
<< " Symbol's Value Symbol's Name";
else
OS << " Offset Info Type Sym. Value "
<< "Symbol's Name";
if (IsRela)
OS << (IsRela ? " + 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)
continue;
HasRelocSections = true;
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
unsigned Entries = Sec.getEntityCount();
uintX_t Offset = Sec.sh_offset;
OS << "\nRelocation section '" << Name << "' at offset 0x"
<< to_hexString(Offset, false) << " contains " << Entries
<< " entries:\n";
printRelocHeader(OS, ELFT::Is64Bits, (Sec.sh_type == ELF::SHT_RELA));
const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link));
if (Sec.sh_type == 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);
}
} else {
for (const auto &R : unwrapOrError(Obj->relas(&Sec)))
printRelocation(Obj, SymTab, R, true);
}
}
if (!HasRelocSections)
OS << "\nThere are no relocations in this file.\n";
}
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";
}
case EM_X86_64:
switch (Type) {
case SHT_X86_64_UNWIND:
return "X86_64_UNWIND";
}
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_ABIFLAGS:
return "MIPS_ABIFLAGS";
case SHT_MIPS_DWARF:
return "SHT_MIPS_DWARF";
}
}
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_LLVM_ODRTAB:
return "LLVM_ODRTAB";
// 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 "";
}
return "";
}
template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) {
size_t SectionIndex = 0;
std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize,
Alignment;
unsigned Bias;
unsigned Width;
if (ELFT::Is64Bits) {
Bias = 0;
Width = 16;
} else {
Bias = 8;
Width = 8;
}
OS << "There are " << to_string(Obj->getHeader()->e_shnum)
<< " 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";
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
Number = to_string(SectionIndex);
Fields[0].Str = Number;
Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec));
Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type);
Fields[2].Str = Type;
Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width));
Fields[3].Str = Address;
Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6));
Fields[4].Str = Offset;
Size = to_string(format_hex_no_prefix(Sec.sh_size, 6));
Fields[5].Str = Size;
EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2));
Fields[6].Str = EntrySize;
Flags = getGNUFlags(Sec.sh_flags);
Fields[7].Str = Flags;
Link = to_string(Sec.sh_link);
Fields[8].Str = Link;
Info = to_string(Sec.sh_info);
Fields[9].Str = Info;
Alignment = to_string(Sec.sh_addralign);
Fields[10].Str = Alignment;
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:
SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>(
Symbol, FirstSym, this->dumper()->getShndxTable()));
LLVM_FALLTHROUGH;
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;
size_t Width;
// 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;
}
std::string Num, Name, Value, Size, Binding, Type, Visibility, Section;
unsigned Bias = 0;
if (ELFT::Is64Bits) {
Bias = 8;
Width = 16;
} else {
Bias = 0;
Width = 8;
}
Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias,
31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias};
Num = to_string(format_decimal(Idx++, 6)) + ":";
Value = to_string(format_hex_no_prefix(Symbol->st_value, Width));
Size = 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)
Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
else
Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
unsigned Vis = Symbol->getVisibility();
Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities));
Section = getSymbolSectionNdx(Obj, Symbol, FirstSym);
Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
Fields[0].Str = Num;
Fields[1].Str = Value;
Fields[2].Str = Size;
Fields[3].Str = Type;
Fields[4].Str = Binding;
Fields[5].Str = Visibility;
Fields[6].Str = Section;
Fields[7].Str = Name;
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) {
std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section;
unsigned Width, Bias = 0;
if (ELFT::Is64Bits) {
Bias = 8;
Width = 16;
} else {
Bias = 0;
Width = 8;
}
Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias,
34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias};
Num = to_string(format_decimal(Sym, 5));
Buc = to_string(format_decimal(Bucket, 3)) + ":";
const auto Symbol = FirstSym + Sym;
Value = to_string(format_hex_no_prefix(Symbol->st_value, Width));
Size = 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)
Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
else
Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
unsigned Vis = Symbol->getVisibility();
Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities));
Section = getSymbolSectionNdx(Obj, Symbol, FirstSym);
Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true);
Fields[0].Str = Num;
Fields[1].Str = Buc;
Fields[2].Str = Value;
Fields[3].Str = Size;
Fields[4].Str = Type;
Fields[5].Str = Binding;
Fields[6].Str = Visibility;
Fields[7].Str = Section;
Fields[8].Str = Name;
for (auto &Entry : Fields)
printField(Entry);
OS << "\n";
}
template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) {
if (opts::DynamicSymbols)
return;
this->dumper()->printSymbolsHelper(true);
this->dumper()->printSymbolsHelper(false);
}
template <class ELFT>
void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) {
if (this->dumper()->getDynamicStringTable().empty())
return;
auto StringTable = this->dumper()->getDynamicStringTable();
auto DynSyms = this->dumper()->dynamic_symbols();
auto GnuHash = this->dumper()->getGnuHashTable();
auto SysVHash = this->dumper()->getHashTable();
// If no hash or .gnu.hash found, try using symbol table
if (GnuHash == nullptr && SysVHash == nullptr)
this->dumper()->printSymbolsHelper(true);
// Try printing .hash
if (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";
uint32_t NBuckets = SysVHash->nbucket;
uint32_t NChains = SysVHash->nchain;
auto Buckets = SysVHash->buckets();
auto Chains = SysVHash->chains();
for (uint32_t Buc = 0; Buc < NBuckets; Buc++) {
if (Buckets[Buc] == ELF::STN_UNDEF)
continue;
for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) {
if (Ch == ELF::STN_UNDEF)
break;
printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc);
}
}
}
// Try printing .gnu.hash
if (GnuHash) {
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";
uint32_t NBuckets = GnuHash->nbuckets;
auto Buckets = GnuHash->buckets();
for (uint32_t Buc = 0; Buc < 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) {
unsigned Bias = ELFT::Is64Bits ? 8 : 0;
unsigned Width = ELFT::Is64Bits ? 18 : 10;
unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7;
std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align;
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";
for (const auto &Phdr : unwrapOrError(Obj->program_headers())) {
Type = getElfPtType(Header->e_machine, Phdr.p_type);
Offset = to_string(format_hex(Phdr.p_offset, 8));
VMA = to_string(format_hex(Phdr.p_vaddr, Width));
LMA = to_string(format_hex(Phdr.p_paddr, Width));
FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth));
MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth));
Flag = printPhdrFlags(Phdr.p_flags);
Align = to_string(format_hex(Phdr.p_align, 1));
Fields[0].Str = Type;
Fields[1].Str = Offset;
Fields[2].Str = VMA;
Fields[3].Str = LMA;
Fields[4].Str = FileSz;
Fields[5].Str = MemSz;
Fields[6].Str = Flag;
Fields[7].Str = Align;
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";
}
OS << "\n Section to Segment mapping:\n Segment Sections...\n";
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() + " ";
}
OS << Sections << "\n";
OS.flush();
}
}
template <class ELFT>
void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R,
bool IsRela) {
SmallString<32> RelocName;
StringRef SymbolName;
unsigned Width = ELFT::Is64Bits ? 16 : 8;
unsigned Bias = ELFT::Is64Bits ? 8 : 0;
// First two fields are bit width dependent. The rest of them are after are
// fixed width.
Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias};
uint32_t SymIndex = R.getSymbol(Obj->isMips64EL());
const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName);
SymbolName =
unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable()));
std::string Addend, Info, Offset, Value;
Offset = to_string(format_hex_no_prefix(R.r_offset, Width));
Info = to_string(format_hex_no_prefix(R.r_info, Width));
Value = to_string(format_hex_no_prefix(Sym->getValue(), Width));
int64_t RelAddend = R.r_addend;
if (!SymbolName.empty() && IsRela) {
if (R.r_addend < 0)
Addend = " - ";
else
Addend = " + ";
}
if (SymbolName.empty() && Sym->getValue() == 0)
Value = "";
if (IsRela)
Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1));
Fields[0].Str = Offset;
Fields[1].Str = Info;
Fields[2].Str = RelocName.c_str();
Fields[3].Str = Value;
Fields[4].Str = SymbolName;
for (auto &Field : Fields)
printField(Field);
OS << Addend;
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 &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(OS, ELFT::Is64Bits, true);
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(OS, ELFT::Is64Bits, false);
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 (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(OS, ELFT::Is64Bits, true);
for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
printDynamicRelocation(Obj, Rela, true);
} else {
printRelocHeader(OS, ELFT::Is64Bits, false);
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);
}
}
}
// 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) {
const Elf_Hash *HashTable = this->dumper()->getHashTable();
const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable();
// Print histogram for .hash section
if (HashTable) {
size_t NBucket = HashTable->nbucket;
size_t NChain = HashTable->nchain;
ArrayRef<Elf_Word> Buckets = HashTable->buckets();
ArrayRef<Elf_Word> Chains = HashTable->chains();
size_t TotalSyms = 0;
// If hash table is correct, we have at least chains with 0 length
size_t MaxChain = 1;
size_t CumulativeNonZero = 0;
if (NChain == 0 || NBucket == 0)
return;
std::vector<size_t> ChainLen(NBucket, 0);
// Go over all buckets and and note chain lengths of each bucket (total
// unique chain lengths).
for (size_t B = 0; B < NBucket; B++) {
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 (GnuHashTable) {
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);
}
}
}
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)"},
};
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 string;
}
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 string;
}
template <typename ELFT>
static void printGNUNote(raw_ostream &OS, uint32_t NoteType,
ArrayRef<typename ELFFile<ELFT>::Elf_Word> Words,
size_t Size) {
switch (NoteType) {
default:
return;
case ELF::NT_GNU_ABI_TAG: {
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];
if (Words.size() < 4)
OS << " <corrupt GNU_ABI_TAG>";
else
OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "."
<< Patch;
break;
}
case ELF::NT_GNU_BUILD_ID: {
OS << " Build ID: ";
ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size);
for (const auto &B : ID)
OS << format_hex_no_prefix(B, 2);
break;
}
case ELF::NT_GNU_GOLD_VERSION:
OS << " Version: "
<< StringRef(reinterpret_cast<const char *>(Words.data()), Size);
break;
}
OS << '\n';
}
template <class ELFT>
void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
const Elf_Ehdr *e = Obj->getHeader();
bool IsCore = e->e_type == ELF::ET_CORE;
auto process = [&](const typename ELFFile<ELFT>::Elf_Off Offset,
const typename ELFFile<ELFT>::Elf_Addr Size) {
if (Size <= 0)
return;
const auto *P = static_cast<const uint8_t *>(Obj->base() + Offset);
const auto *E = P + Size;
OS << "Displaying notes found at file offset " << format_hex(Offset, 10)
<< " with length " << format_hex(Size, 10) << ":\n"
<< " Owner Data size\tDescription\n";
while (P < E) {
const Elf_Word *Words = reinterpret_cast<const Elf_Word *>(&P[0]);
uint32_t NameSize = Words[0];
uint32_t DescriptorSize = Words[1];
uint32_t Type = Words[2];
ArrayRef<Elf_Word> Descriptor(&Words[3 + (alignTo<4>(NameSize) / 4)],
alignTo<4>(DescriptorSize) / 4);
StringRef Name;
if (NameSize)
Name =
StringRef(reinterpret_cast<const char *>(&Words[3]), NameSize - 1);
OS << " " << Name << std::string(22 - NameSize, ' ')
<< format_hex(DescriptorSize, 10) << '\t';
if (Name == "GNU") {
OS << getGNUNoteTypeName(Type) << '\n';
printGNUNote<ELFT>(OS, Type, Descriptor, DescriptorSize);
} else if (Name == "FreeBSD") {
OS << getFreeBSDNoteTypeName(Type) << '\n';
} else {
OS << "Unknown note type: (" << format_hex(Type, 10) << ')';
}
OS << '\n';
P = P + 3 * sizeof(Elf_Word) + alignTo<4>(NameSize) +
alignTo<4>(DescriptorSize);
}
};
if (IsCore) {
for (const auto &P : unwrapOrError(Obj->program_headers()))
if (P.p_type == PT_NOTE)
process(P.p_offset, P.p_filesz);
} else {
for (const auto &S : unwrapOrError(Obj->sections()))
if (S.sh_type == SHT_NOTE)
process(S.sh_offset, S.sh_size);
}
}
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]);
// Handle architecture specific OS/ABI values.
if (e->e_machine == ELF::EM_AMDGPU &&
e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA)
W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA);
else
W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI],
makeArrayRef(ElfOSABI));
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
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.printNumber("SectionHeaderCount", e->e_shnum);
W.printNumber("StringTableSectionIndex", e->e_shstrndx);
}
}
template <class ELFT>
void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) {
DictScope Lists(W, "Groups");
uint32_t SectionIndex = 0;
bool HasGroups = false;
for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (Sec.sh_type == ELF::SHT_GROUP) {
HasGroups = true;
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));
DictScope D(W, "Group");
StringRef Name = unwrapOrError(Obj->getSectionName(&Sec));
W.printNumber("Name", Name, Sec.sh_name);
W.printNumber("Index", SectionIndex);
W.printHex("Type", getGroupType(Data[0]), Data[0]);
W.startLine() << "Signature: " << StrTable.data() + Sym->st_name << "\n";
{
ListScope L(W, "Section(s) in group");
size_t Member = 1;
while (Member < Data.size()) {
auto Sec = unwrapOrError(Obj->getSection(Data[Member]));
const StringRef Name = unwrapOrError(Obj->getSectionName(Sec));
W.startLine() << Name << " (" << Data[Member++] << ")\n";
}
}
}
++SectionIndex;
}
if (!HasGroups)
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)
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;
}
}
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);
StringRef 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 = unwrapOrError(Sym->getName(StrTable));
}
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>::printSections(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((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;
getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(),
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) {
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>::printDynamicRelocations(const ELFO *Obj) {
const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
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 (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);
StringRef SymbolName;
uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL());
const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
SymbolName =
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) {
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>::printHashHistogram(const ELFFile<ELFT> *Obj) {
W.startLine() << "Hash Histogram not implemented!\n";
}
template <class ELFT>
void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
W.startLine() << "printNotes not implemented!\n";
}
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