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cobalt / cobalt / e83fce97d7405b0b5e569d961aa431b1112ac6ac / . / src / third_party / llvm-project / llvm / tools / llvm-readobj / ELFDumper.cpp
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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
/// This file implements the ELF-specific dumper for llvm-readobj.
///
//===----------------------------------------------------------------------===//
#include "ARMEHABIPrinter.h"
#include "DwarfCFIEHPrinter.h"
#include "Error.h"
#include "ObjDumper.h"
#include "StackMapPrinter.h"
#include "llvm-readobj.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/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/AMDGPUMetadata.h"
#include "llvm/Support/ARMAttributeParser.h"
#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MipsABIFlags.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cinttypes>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <iterator>
#include <memory>
#include <string>
#include <system_error>
#include <vector>
using namespace llvm;
using namespace llvm::object;
using namespace ELF;
#define LLVM_READOBJ_ENUM_CASE(ns, enum) \
case ns::enum: return #enum;
#define ENUM_ENT(enum, altName) \
{ #enum, altName, ELF::enum }
#define ENUM_ENT_1(enum) \
{ #enum, #enum, ELF::enum }
#define LLVM_READOBJ_PHDR_ENUM(ns, enum) \
case ns::enum: \
return std::string(#enum).substr(3);
#define TYPEDEF_ELF_TYPES(ELFT) \
using ELFO = ELFFile<ELFT>; \
using Elf_Addr = typename ELFT::Addr; \
using Elf_Shdr = typename ELFT::Shdr; \
using Elf_Sym = typename ELFT::Sym; \
using Elf_Dyn = typename ELFT::Dyn; \
using Elf_Dyn_Range = typename ELFT::DynRange; \
using Elf_Rel = typename ELFT::Rel; \
using Elf_Rela = typename ELFT::Rela; \
using Elf_Relr = typename ELFT::Relr; \
using Elf_Rel_Range = typename ELFT::RelRange; \
using Elf_Rela_Range = typename ELFT::RelaRange; \
using Elf_Relr_Range = typename ELFT::RelrRange; \
using Elf_Phdr = typename ELFT::Phdr; \
using Elf_Half = typename ELFT::Half; \
using Elf_Ehdr = typename ELFT::Ehdr; \
using Elf_Word = typename ELFT::Word; \
using Elf_Hash = typename ELFT::Hash; \
using Elf_GnuHash = typename ELFT::GnuHash; \
using Elf_Note = typename ELFT::Note; \
using Elf_Sym_Range = typename ELFT::SymRange; \
using Elf_Versym = typename ELFT::Versym; \
using Elf_Verneed = typename ELFT::Verneed; \
using Elf_Vernaux = typename ELFT::Vernaux; \
using Elf_Verdef = typename ELFT::Verdef; \
using Elf_Verdaux = typename ELFT::Verdaux; \
using Elf_CGProfile = typename ELFT::CGProfile; \
using uintX_t = typename ELFT::uint;
namespace {
template <class ELFT> class DumpStyle;
/// Represents a contiguous uniform range in the file. We cannot just create a
/// range directly because when creating one of these from the .dynamic table
/// the size, entity size and virtual address are different entries in arbitrary
/// order (DT_REL, DT_RELSZ, DT_RELENT for example).
struct DynRegionInfo {
DynRegionInfo() = default;
DynRegionInfo(const void *A, uint64_t S, uint64_t ES)
: Addr(A), Size(S), EntSize(ES) {}
/// Address in current address space.
const void *Addr = nullptr;
/// Size in bytes of the region.
uint64_t Size = 0;
/// Size of each entity in the region.
uint64_t EntSize = 0;
template <typename Type> ArrayRef<Type> getAsArrayRef() const {
const Type *Start = reinterpret_cast<const Type *>(Addr);
if (!Start)
return {Start, Start};
if (EntSize != sizeof(Type) || Size % EntSize)
reportError("Invalid entity size");
return {Start, Start + (Size / EntSize)};
}
};
template<typename ELFT>
class ELFDumper : public ObjDumper {
public:
ELFDumper(const 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 printStackMap() const override;
void printHashHistogram() override;
void printCGProfile() override;
void printAddrsig() override;
void printNotes() override;
void printELFLinkerOptions() override;
private:
std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle;
TYPEDEF_ELF_TYPES(ELFT)
DynRegionInfo checkDRI(DynRegionInfo DRI) {
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 DynRelrRegion;
DynRegionInfo DynPLTRelRegion;
DynRegionInfo DynSymRegion;
DynRegionInfo DynamicTable;
StringRef DynamicStringTable;
StringRef SOName;
const Elf_Hash *HashTable = nullptr;
const Elf_GnuHash *GnuHashTable = nullptr;
const Elf_Shdr *DotSymtabSec = nullptr;
const Elf_Shdr *DotCGProfileSec = nullptr;
const Elf_Shdr *DotAddrsigSec = nullptr;
StringRef DynSymtabName;
ArrayRef<Elf_Word> ShndxTable;
const Elf_Shdr *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;
Elf_Relr_Range dyn_relrs() const;
std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable,
bool IsDynamic) const;
void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym,
StringRef &SectionName,
unsigned &SectionIndex) const;
StringRef getStaticSymbolName(uint32_t Index) const;
void printSymbolsHelper(bool IsDynamic) const;
const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; }
const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; }
const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; }
ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; }
StringRef getDynamicStringTable() const { return DynamicStringTable; }
const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; }
const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; }
const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; }
const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; }
const 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 <class ELFT> class MipsGOTParser;
template <typename ELFT> class DumpStyle {
public:
using Elf_Shdr = typename ELFT::Shdr;
using Elf_Sym = typename ELFT::Sym;
DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {}
virtual ~DumpStyle() = default;
virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0;
virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0;
virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0;
virtual void 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 printCGProfile(const ELFFile<ELFT> *Obj) = 0;
virtual void printAddrsig(const ELFFile<ELFT> *Obj) = 0;
virtual void printNotes(const ELFFile<ELFT> *Obj) = 0;
virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0;
virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
const ELFDumper<ELFT> *dumper() const { return Dumper; }
private:
const ELFDumper<ELFT> *Dumper;
};
template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> {
formatted_raw_ostream OS;
public:
TYPEDEF_ELF_TYPES(ELFT)
GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
: DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {}
void printFileHeaders(const ELFO *Obj) override;
void printGroupSections(const ELFFile<ELFT> *Obj) override;
void printRelocations(const ELFO *Obj) override;
void 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 printCGProfile(const ELFFile<ELFT> *Obj) override;
void printAddrsig(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
private:
struct Field {
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 printRelocHeader(unsigned SType);
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 printCGProfile(const ELFFile<ELFT> *Obj) override;
void printAddrsig(const ELFFile<ELFT> *Obj) override;
void printNotes(const ELFFile<ELFT> *Obj) override;
void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
private:
void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab);
void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel);
void 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>
StringRef ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const {
StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec));
Elf_Sym_Range Syms = unwrapOrError(Obj->symbols(DotSymtabSec));
if (Index >= Syms.size())
reportError("Invalid symbol index");
const Elf_Sym *Sym = &Syms[Index];
return unwrapOrError(Sym->getName(StrTable));
}
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>
void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol,
const Elf_Sym *FirstSym,
StringRef &SectionName,
unsigned &SectionIndex) const {
SectionIndex = Symbol->st_shndx;
if (Symbol->isUndefined())
SectionName = "Undefined";
else if (Symbol->isProcessorSpecific())
SectionName = "Processor Specific";
else if (Symbol->isOSSpecific())
SectionName = "Operating System Specific";
else if (Symbol->isAbsolute())
SectionName = "Absolute";
else if (Symbol->isCommon())
SectionName = "Common";
else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX)
SectionName = "Reserved";
else {
if (SectionIndex == SHN_XINDEX)
SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>(
Symbol, FirstSym, ShndxTable));
const typename ELFT::Shdr *Sec =
unwrapOrError(Obj->getSection(SectionIndex));
SectionName = unwrapOrError(Obj->getSectionName(Sec));
}
}
template <class ELFO>
static const typename ELFO::Elf_Shdr *
findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) {
for (const auto &Shdr : unwrapOrError(Obj->sections()))
if (Shdr.sh_addr == Addr && Shdr.sh_size > 0)
return &Shdr;
return nullptr;
}
template <class ELFO>
static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj,
StringRef Name) {
for (const auto &Shdr : unwrapOrError(Obj.sections())) {
if (Name == unwrapOrError(Obj.getSectionName(&Shdr)))
return &Shdr;
}
return nullptr;
}
static const EnumEntry<unsigned> ElfClass[] = {
{"None", "none", ELF::ELFCLASSNONE},
{"32-bit", "ELF32", ELF::ELFCLASS32},
{"64-bit", "ELF64", ELF::ELFCLASS64},
};
static const EnumEntry<unsigned> ElfDataEncoding[] = {
{"None", "none", ELF::ELFDATANONE},
{"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB},
{"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB},
};
static const EnumEntry<unsigned> ElfObjectFileType[] = {
{"None", "NONE (none)", ELF::ET_NONE},
{"Relocatable", "REL (Relocatable file)", ELF::ET_REL},
{"Executable", "EXEC (Executable file)", ELF::ET_EXEC},
{"SharedObject", "DYN (Shared object file)", ELF::ET_DYN},
{"Core", "CORE (Core file)", ELF::ET_CORE},
};
static const EnumEntry<unsigned> ElfOSABI[] = {
{"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE},
{"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX},
{"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD},
{"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX},
{"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD},
{"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS},
{"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX},
{"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX},
{"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD},
{"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64},
{"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO},
{"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD},
{"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS},
{"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK},
{"AROS", "AROS", ELF::ELFOSABI_AROS},
{"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS},
{"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI},
{"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE}
};
static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
{"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA},
{"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL},
{"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D}
};
static const EnumEntry<unsigned> ARMElfOSABI[] = {
{"ARM", "ARM", ELF::ELFOSABI_ARM}
};
static const EnumEntry<unsigned> C6000ElfOSABI[] = {
{"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
{"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX}
};
static const EnumEntry<unsigned> ElfMachineType[] = {
ENUM_ENT(EM_NONE, "None"),
ENUM_ENT(EM_M32, "WE32100"),
ENUM_ENT(EM_SPARC, "Sparc"),
ENUM_ENT(EM_386, "Intel 80386"),
ENUM_ENT(EM_68K, "MC68000"),
ENUM_ENT(EM_88K, "MC88000"),
ENUM_ENT(EM_IAMCU, "EM_IAMCU"),
ENUM_ENT(EM_860, "Intel 80860"),
ENUM_ENT(EM_MIPS, "MIPS R3000"),
ENUM_ENT(EM_S370, "IBM System/370"),
ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"),
ENUM_ENT(EM_PARISC, "HPPA"),
ENUM_ENT(EM_VPP500, "Fujitsu VPP500"),
ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"),
ENUM_ENT(EM_960, "Intel 80960"),
ENUM_ENT(EM_PPC, "PowerPC"),
ENUM_ENT(EM_PPC64, "PowerPC64"),
ENUM_ENT(EM_S390, "IBM S/390"),
ENUM_ENT(EM_SPU, "SPU"),
ENUM_ENT(EM_V800, "NEC V800 series"),
ENUM_ENT(EM_FR20, "Fujistsu FR20"),
ENUM_ENT(EM_RH32, "TRW RH-32"),
ENUM_ENT(EM_RCE, "Motorola RCE"),
ENUM_ENT(EM_ARM, "ARM"),
ENUM_ENT(EM_ALPHA, "EM_ALPHA"),
ENUM_ENT(EM_SH, "Hitachi SH"),
ENUM_ENT(EM_SPARCV9, "Sparc v9"),
ENUM_ENT(EM_TRICORE, "Siemens Tricore"),
ENUM_ENT(EM_ARC, "ARC"),
ENUM_ENT(EM_H8_300, "Hitachi H8/300"),
ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"),
ENUM_ENT(EM_H8S, "Hitachi H8S"),
ENUM_ENT(EM_H8_500, "Hitachi H8/500"),
ENUM_ENT(EM_IA_64, "Intel IA-64"),
ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"),
ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"),
ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"),
ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"),
ENUM_ENT(EM_PCP, "Siemens PCP"),
ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"),
ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"),
ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"),
ENUM_ENT(EM_ME16, "Toyota ME16 processor"),
ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"),
ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"),
ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"),
ENUM_ENT(EM_PDSP, "Sony DSP processor"),
ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"),
ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"),
ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"),
ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"),
ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"),
ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"),
ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"),
ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"),
ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"),
ENUM_ENT(EM_SVX, "Silicon Graphics SVx"),
ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"),
ENUM_ENT(EM_VAX, "Digital VAX"),
ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"),
ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"),
ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"),
ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"),
ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"),
ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"),
ENUM_ENT(EM_PRISM, "Vitesse Prism"),
ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"),
ENUM_ENT(EM_FR30, "Fujitsu FR30"),
ENUM_ENT(EM_D10V, "Mitsubishi D10V"),
ENUM_ENT(EM_D30V, "Mitsubishi D30V"),
ENUM_ENT(EM_V850, "NEC v850"),
ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"),
ENUM_ENT(EM_MN10300, "Matsushita MN10300"),
ENUM_ENT(EM_MN10200, "Matsushita MN10200"),
ENUM_ENT(EM_PJ, "picoJava"),
ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"),
ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"),
ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"),
ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"),
ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"),
ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"),
ENUM_ENT(EM_TPC, "Tenor Network TPC processor"),
ENUM_ENT(EM_SNP1K, "EM_SNP1K"),
ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"),
ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"),
ENUM_ENT(EM_MAX, "MAX Processor"),
ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"),
ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"),
ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"),
ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"),
ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"),
ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"),
ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"),
ENUM_ENT(EM_UNICORE, "Unicore"),
ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"),
ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"),
ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"),
ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"),
ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"),
ENUM_ENT(EM_C166, "Infineon Technologies xc16x"),
ENUM_ENT(EM_M16C, "Renesas M16C"),
ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"),
ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"),
ENUM_ENT(EM_M32C, "Renesas M32C"),
ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"),
ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"),
ENUM_ENT(EM_SHARC, "EM_SHARC"),
ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"),
ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"),
ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"),
ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"),
ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"),
ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"),
ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"),
ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"),
ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"),
ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"),
ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"),
ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"),
ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"),
ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"),
ENUM_ENT(EM_8051, "Intel 8051 and variants"),
ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"),
ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"),
ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"),
ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"),
ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"),
ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"),
ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"),
ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"),
ENUM_ENT(EM_RX, "Renesas RX"),
ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"),
ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"),
ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"),
ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"),
ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"),
ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"),
ENUM_ENT(EM_L10M, "EM_L10M"),
ENUM_ENT(EM_K10M, "EM_K10M"),
ENUM_ENT(EM_AARCH64, "AArch64"),
ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"),
ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"),
ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"),
ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"),
ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"),
ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"),
ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"),
ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"),
ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"),
ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"),
ENUM_ENT(EM_OPEN8, "EM_OPEN8"),
ENUM_ENT(EM_RL78, "Renesas RL78"),
ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"),
ENUM_ENT(EM_78KOR, "EM_78KOR"),
ENUM_ENT(EM_56800EX, "EM_56800EX"),
ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"),
ENUM_ENT(EM_RISCV, "RISC-V"),
ENUM_ENT(EM_LANAI, "EM_LANAI"),
ENUM_ENT(EM_BPF, "EM_BPF"),
};
static const EnumEntry<unsigned> ElfSymbolBindings[] = {
{"Local", "LOCAL", ELF::STB_LOCAL},
{"Global", "GLOBAL", ELF::STB_GLOBAL},
{"Weak", "WEAK", ELF::STB_WEAK},
{"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}};
static const EnumEntry<unsigned> ElfSymbolVisibilities[] = {
{"DEFAULT", "DEFAULT", ELF::STV_DEFAULT},
{"INTERNAL", "INTERNAL", ELF::STV_INTERNAL},
{"HIDDEN", "HIDDEN", ELF::STV_HIDDEN},
{"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}};
static const EnumEntry<unsigned> 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> ElfHeaderAMDGPUFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906),
LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK)
};
static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVC),
LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_SINGLE),
LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_DOUBLE),
LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_QUAD),
LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVE)
};
static const EnumEntry<unsigned> ElfSymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL),
LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN),
LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED)
};
static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS)
};
static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16)
};
static const char *getElfMipsOptionsOdkType(unsigned Odk) {
switch (Odk) {
LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT);
LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE);
default:
return "Unknown";
}
}
template <typename ELFT>
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("Multiple SHT_SYMTAB");
DotSymtabSec = &Sec;
break;
case ELF::SHT_DYNSYM:
if (DynSymRegion.Size)
reportError("Multiple SHT_DYNSYM");
DynSymRegion = createDRIFrom(&Sec);
// This is only used (if Elf_Shdr present)for naming section in GNU style
DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec));
DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec));
break;
case ELF::SHT_SYMTAB_SHNDX:
ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec));
break;
case ELF::SHT_GNU_versym:
if (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("Multiple SHT_GNU_verneed");
dot_gnu_version_r_sec = &Sec;
break;
case ELF::SHT_LLVM_CALL_GRAPH_PROFILE:
if (DotCGProfileSec != nullptr)
reportError("Multiple .note.llvm.cgprofile");
DotCGProfileSec = &Sec;
break;
case ELF::SHT_LLVM_ADDRSIG:
if (DotAddrsigSec != nullptr)
reportError("Multiple .llvm_addrsig");
DotAddrsigSec = &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,
[](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) {
return VAddr < Phdr->p_vaddr;
});
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_RELR:
case ELF::DT_ANDROID_RELR:
DynRelrRegion.Addr = toMappedAddr(Dyn.getPtr());
break;
case ELF::DT_RELRSZ:
case ELF::DT_ANDROID_RELRSZ:
DynRelrRegion.Size = Dyn.getVal();
break;
case ELF::DT_RELRENT:
case ELF::DT_ANDROID_RELRENT:
DynRelrRegion.EntSize = Dyn.getVal();
break;
case ELF::DT_PLTREL:
if (Dyn.getVal() == DT_REL)
DynPLTRelRegion.EntSize = sizeof(Elf_Rel);
else if (Dyn.getVal() == DT_RELA)
DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
else
reportError(Twine("unknown DT_PLTREL value of ") +
Twine((uint64_t)Dyn.getVal()));
break;
case ELF::DT_JMPREL:
DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr());
break;
case ELF::DT_PLTRELSZ:
DynPLTRelRegion.Size = Dyn.getVal();
break;
}
}
if (StringTableBegin)
DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
if (SONameOffset)
SOName = getDynamicString(SONameOffset);
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const {
return DynRelRegion.getAsArrayRef<Elf_Rel>();
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const {
return DynRelaRegion.getAsArrayRef<Elf_Rela>();
}
template <typename ELFT>
typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const {
return DynRelrRegion.getAsArrayRef<Elf_Relr>();
}
template<class ELFT>
void ELFDumper<ELFT>::printFileHeaders() {
ELFDumperStyle->printFileHeaders(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>::printCGProfile() {
ELFDumperStyle->printCGProfile(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printNotes() {
ELFDumperStyle->printNotes(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() {
ELFDumperStyle->printELFLinkerOptions(Obj);
}
static const char *getTypeString(unsigned Arch, uint64_t Type) {
#define DYNAMIC_TAG(n, v)
switch (Arch) {
case EM_HEXAGON:
switch (Type) {
#define HEXAGON_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef HEXAGON_DYNAMIC_TAG
}
case EM_MIPS:
switch (Type) {
#define MIPS_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef MIPS_DYNAMIC_TAG
}
case EM_PPC64:
switch(Type) {
#define PPC64_DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef PPC64_DYNAMIC_TAG
}
}
#undef DYNAMIC_TAG
switch (Type) {
// Now handle all dynamic tags except the architecture specific ones
#define MIPS_DYNAMIC_TAG(name, value)
#define HEXAGON_DYNAMIC_TAG(name, value)
#define PPC64_DYNAMIC_TAG(name, value)
// Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc.
#define DYNAMIC_TAG_MARKER(name, value)
#define DYNAMIC_TAG(name, value) \
case DT_##name: \
return #name;
#include "llvm/BinaryFormat/DynamicTags.def"
#undef DYNAMIC_TAG
#undef MIPS_DYNAMIC_TAG
#undef HEXAGON_DYNAMIC_TAG
#undef PPC64_DYNAMIC_TAG
#undef DYNAMIC_TAG_MARKER
default: return "unknown";
}
}
#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:
case DT_ANDROID_RELSZ:
case DT_ANDROID_RELASZ:
OS << Value << " (bytes)";
break;
case DT_NEEDED:
printLibrary(OS, "Shared library", getDynamicString(Value));
break;
case DT_SONAME:
printLibrary(OS, "Library soname", getDynamicString(Value));
break;
case DT_AUXILIARY:
printLibrary(OS, "Auxiliary library", getDynamicString(Value));
break;
case DT_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() {
const unsigned Machine = Obj->getHeader()->e_machine;
if (Machine == EM_386 || Machine == EM_X86_64) {
DwarfCFIEH::PrinterContext<ELFT> Ctx(W, Obj);
return Ctx.printUnwindInformation();
}
W.startLine() << "UnwindInfo not implemented.\n";
}
namespace {
template <> void ELFDumper<ELF32LE>::printUnwindInfo() {
const unsigned Machine = Obj->getHeader()->e_machine;
if (Machine == EM_ARM) {
ARM::EHABI::PrinterContext<ELF32LE> 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)
W.startLine() << L << "\n";
}
template <typename ELFT>
void ELFDumper<ELFT>::printHashTable() {
DictScope D(W, "HashTable");
if (!HashTable)
return;
W.printNumber("Num Buckets", HashTable->nbucket);
W.printNumber("Num Chains", HashTable->nchain);
W.printList("Buckets", HashTable->buckets());
W.printList("Chains", HashTable->chains());
}
template <typename ELFT>
void ELFDumper<ELFT>::printGnuHashTable() {
DictScope D(W, "GnuHashTable");
if (!GnuHashTable)
return;
W.printNumber("Num Buckets", GnuHashTable->nbuckets);
W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx);
W.printNumber("Num Mask Words", GnuHashTable->maskwords);
W.printNumber("Shift Count", GnuHashTable->shift2);
W.printHexList("Bloom Filter", GnuHashTable->filter());
W.printList("Buckets", GnuHashTable->buckets());
Elf_Sym_Range Syms = dynamic_symbols();
unsigned NumSyms = std::distance(Syms.begin(), Syms.end());
if (!NumSyms)
reportError("No dynamic symbol section");
W.printHexList("Values", GnuHashTable->values(NumSyms));
}
template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
W.printString("LoadName", SOName);
}
template <class ELFT>
void ELFDumper<ELFT>::printAttributes() {
W.startLine() << "Attributes not implemented.\n";
}
namespace {
template <> void ELFDumper<ELF32LE>::printAttributes() {
if (Obj->getHeader()->e_machine != EM_ARM) {
W.startLine() << "Attributes not implemented.\n";
return;
}
DictScope BA(W, "BuildAttributes");
for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) {
if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES)
continue;
ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec));
if (Contents[0] != ARMBuildAttrs::Format_Version) {
errs() << "unrecognised FormatVersion: 0x"
<< Twine::utohexstr(Contents[0]) << '\n';
continue;
}
W.printHex("FormatVersion", Contents[0]);
if (Contents.size() == 1)
continue;
ARMAttributeParser(&W).Parse(Contents, true);
}
}
template <class ELFT> class MipsGOTParser {
public:
TYPEDEF_ELF_TYPES(ELFT)
using Entry = typename ELFO::Elf_Addr;
using Entries = ArrayRef<Entry>;
const bool IsStatic;
const ELFO * const Obj;
MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms);
bool hasGot() const { return !GotEntries.empty(); }
bool hasPlt() const { return !PltEntries.empty(); }
uint64_t getGp() const;
const Entry *getGotLazyResolver() const;
const Entry *getGotModulePointer() const;
const Entry *getPltLazyResolver() const;
const Entry *getPltModulePointer() const;
Entries getLocalEntries() const;
Entries getGlobalEntries() const;
Entries getOtherEntries() const;
Entries getPltEntries() const;
uint64_t getGotAddress(const Entry * E) const;
int64_t getGotOffset(const Entry * E) const;
const Elf_Sym *getGotSym(const Entry *E) const;
uint64_t getPltAddress(const Entry * E) const;
const Elf_Sym *getPltSym(const Entry *E) const;
StringRef getPltStrTable() const { return PltStrTable; }
private:
const Elf_Shdr *GotSec;
size_t LocalNum;
size_t GlobalNum;
const Elf_Shdr *PltSec;
const Elf_Shdr *PltRelSec;
const Elf_Shdr *PltSymTable;
Elf_Sym_Range GotDynSyms;
StringRef PltStrTable;
Entries GotEntries;
Entries PltEntries;
};
} // end anonymous namespace
template <class ELFT>
MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable,
Elf_Sym_Range DynSyms)
: IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0),
GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr) {
// See "Global Offset Table" in Chapter 5 in the following document
// for detailed GOT description.
// ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
// Find static GOT secton.
if (IsStatic) {
GotSec = findSectionByName(*Obj, ".got");
if (!GotSec)
reportError("Cannot find .got section");
ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec));
GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
Content.size() / sizeof(Entry));
LocalNum = GotEntries.size();
return;
}
// Lookup dynamic table tags which define GOT/PLT layouts.
Optional<uint64_t> DtPltGot;
Optional<uint64_t> DtLocalGotNum;
Optional<uint64_t> DtGotSym;
Optional<uint64_t> DtMipsPltGot;
Optional<uint64_t> DtJmpRel;
for (const auto &Entry : DynTable) {
switch (Entry.getTag()) {
case ELF::DT_PLTGOT:
DtPltGot = Entry.getVal();
break;
case ELF::DT_MIPS_LOCAL_GOTNO:
DtLocalGotNum = Entry.getVal();
break;
case ELF::DT_MIPS_GOTSYM:
DtGotSym = Entry.getVal();
break;
case ELF::DT_MIPS_PLTGOT:
DtMipsPltGot = Entry.getVal();
break;
case ELF::DT_JMPREL:
DtJmpRel = Entry.getVal();
break;
}
}
// Find dynamic GOT section.
if (DtPltGot || DtLocalGotNum || DtGotSym) {
if (!DtPltGot)
report_fatal_error("Cannot find PLTGOT dynamic table tag.");
if (!DtLocalGotNum)
report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag.");
if (!DtGotSym)
report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag.");
size_t DynSymTotal = DynSyms.size();
if (*DtGotSym > DynSymTotal)
reportError("MIPS_GOTSYM exceeds a number of dynamic symbols");
GotSec = findNotEmptySectionByAddress(Obj, *DtPltGot);
if (!GotSec)
reportError("There is no not empty GOT section at 0x" +
Twine::utohexstr(*DtPltGot));
LocalNum = *DtLocalGotNum;
GlobalNum = DynSymTotal - *DtGotSym;
ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec));
GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
Content.size() / sizeof(Entry));
GotDynSyms = DynSyms.drop_front(*DtGotSym);
}
// Find PLT section.
if (DtMipsPltGot || DtJmpRel) {
if (!DtMipsPltGot)
report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag.");
if (!DtJmpRel)
report_fatal_error("Cannot find JMPREL dynamic table tag.");
PltSec = findNotEmptySectionByAddress(Obj, *DtMipsPltGot);
if (!PltSec)
report_fatal_error("There is no not empty PLTGOT section at 0x " +
Twine::utohexstr(*DtMipsPltGot));
PltRelSec = findNotEmptySectionByAddress(Obj, *DtJmpRel);
if (!PltRelSec)
report_fatal_error("There is no not empty RELPLT section at 0x" +
Twine::utohexstr(*DtJmpRel));
ArrayRef<uint8_t> PltContent =
unwrapOrError(Obj->getSectionContents(PltSec));
PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()),
PltContent.size() / sizeof(Entry));
PltSymTable = unwrapOrError(Obj->getSection(PltRelSec->sh_link));
PltStrTable = unwrapOrError(Obj->getStringTableForSymtab(*PltSymTable));
}
}
template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const {
return GotSec->sh_addr + 0x7ff0;
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Entry *
MipsGOTParser<ELFT>::getGotLazyResolver() const {
return LocalNum > 0 ? &GotEntries[0] : nullptr;
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Entry *
MipsGOTParser<ELFT>::getGotModulePointer() const {
if (LocalNum < 2)
return nullptr;
const Entry &E = GotEntries[1];
if ((E >> (sizeof(Entry) * 8 - 1)) == 0)
return nullptr;
return &E;
}
template <class ELFT>
typename MipsGOTParser<ELFT>::Entries
MipsGOTParser<ELFT>::getLocalEntries() const {
size_t Skip = getGotModulePointer() ? 2 : 1;
if (LocalNum - Skip <= 0)
return Entries();
return GotEntries.slice(Skip, LocalNum - Skip);
}
template <class ELFT>
typename MipsGOTParser<ELFT>::Entries
MipsGOTParser<ELFT>::getGlobalEntries() const {
if (GlobalNum == 0)
return Entries();
return GotEntries.slice(LocalNum, GlobalNum);
}
template <class ELFT>
typename MipsGOTParser<ELFT>::Entries
MipsGOTParser<ELFT>::getOtherEntries() const {
size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum;
if (OtherNum == 0)
return Entries();
return GotEntries.slice(LocalNum + GlobalNum, OtherNum);
}
template <class ELFT>
uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const {
int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
return GotSec->sh_addr + Offset;
}
template <class ELFT>
int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const {
int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
return Offset - 0x7ff0;
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Elf_Sym *
MipsGOTParser<ELFT>::getGotSym(const Entry *E) const {
int64_t Offset = std::distance(GotEntries.data(), E);
return &GotDynSyms[Offset - LocalNum];
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Entry *
MipsGOTParser<ELFT>::getPltLazyResolver() const {
return PltEntries.empty() ? nullptr : &PltEntries[0];
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Entry *
MipsGOTParser<ELFT>::getPltModulePointer() const {
return PltEntries.size() < 2 ? nullptr : &PltEntries[1];
}
template <class ELFT>
typename MipsGOTParser<ELFT>::Entries
MipsGOTParser<ELFT>::getPltEntries() const {
if (PltEntries.size() <= 2)
return Entries();
return PltEntries.slice(2, PltEntries.size() - 2);
}
template <class ELFT>
uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const {
int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry);
return PltSec->sh_addr + Offset;
}
template <class ELFT>
const typename MipsGOTParser<ELFT>::Elf_Sym *
MipsGOTParser<ELFT>::getPltSym(const Entry *E) const {
int64_t Offset = std::distance(getPltEntries().data(), E);
if (PltRelSec->sh_type == ELF::SHT_REL) {
Elf_Rel_Range Rels = unwrapOrError(Obj->rels(PltRelSec));
return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
} else {
Elf_Rela_Range Rels = unwrapOrError(Obj->relas(PltRelSec));
return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
}
}
template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
if (Obj->getHeader()->e_machine != EM_MIPS)
reportError("MIPS PLT GOT is available for MIPS targets only");
MipsGOTParser<ELFT> Parser(Obj, dynamic_table(), dynamic_symbols());
if (Parser.hasGot())
ELFDumperStyle->printMipsGOT(Parser);
if (Parser.hasPlt())
ELFDumperStyle->printMipsPLT(Parser);
}
static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
{"None", Mips::AFL_EXT_NONE},
{"Broadcom SB-1", Mips::AFL_EXT_SB1},
{"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON},
{"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
{"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
{"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
{"LSI R4010", Mips::AFL_EXT_4010},
{"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E},
{"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F},
{"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A},
{"MIPS R4650", Mips::AFL_EXT_4650},
{"MIPS R5900", Mips::AFL_EXT_5900},
{"MIPS R10000", Mips::AFL_EXT_10000},
{"NEC VR4100", Mips::AFL_EXT_4100},
{"NEC VR4111/VR4181", Mips::AFL_EXT_4111},
{"NEC VR4120", Mips::AFL_EXT_4120},
{"NEC VR5400", Mips::AFL_EXT_5400},
{"NEC VR5500", Mips::AFL_EXT_5500},
{"RMI Xlr", Mips::AFL_EXT_XLR},
{"Toshiba R3900", Mips::AFL_EXT_3900}
};
static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
{"DSP", Mips::AFL_ASE_DSP},
{"DSPR2", Mips::AFL_ASE_DSPR2},
{"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
{"MCU", Mips::AFL_ASE_MCU},
{"MDMX", Mips::AFL_ASE_MDMX},
{"MIPS-3D", Mips::AFL_ASE_MIPS3D},
{"MT", Mips::AFL_ASE_MT},
{"SmartMIPS", Mips::AFL_ASE_SMARTMIPS},
{"VZ", Mips::AFL_ASE_VIRT},
{"MSA", Mips::AFL_ASE_MSA},
{"MIPS16", Mips::AFL_ASE_MIPS16},
{"microMIPS", Mips::AFL_ASE_MICROMIPS},
{"XPA", Mips::AFL_ASE_XPA},
{"CRC", Mips::AFL_ASE_CRC},
{"GINV", Mips::AFL_ASE_GINV},
};
static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
{"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY},
{"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
{"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
{"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT},
{"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
{"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX},
{"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
{"Hard float compat (32-bit CPU, 64-bit FPU)",
Mips::Val_GNU_MIPS_ABI_FP_64A}
};
static const EnumEntry<unsigned> ElfMipsFlags1[] {
{"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
};
static int getMipsRegisterSize(uint8_t Flag) {
switch (Flag) {
case Mips::AFL_REG_NONE:
return 0;
case Mips::AFL_REG_32:
return 32;
case Mips::AFL_REG_64:
return 64;
case Mips::AFL_REG_128:
return 128;
default:
return -1;
}
}
template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() {
const 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>::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;
ArrayRef<uint8_t> StackMapContentsArray =
unwrapOrError(Obj->getSectionContents(StackMapSection));
prettyPrintStackMap(
W, StackMapV2Parser<ELFT::TargetEndianness>(StackMapContentsArray));
}
template <class ELFT> void ELFDumper<ELFT>::printGroupSections() {
ELFDumperStyle->printGroupSections(Obj);
}
template <class ELFT> void ELFDumper<ELFT>::printAddrsig() {
ELFDumperStyle->printAddrsig(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>
static std::string getSectionHeadersNumString(const ELFFile<ELFT> *Obj) {
const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
if (ElfHeader->e_shnum != 0)
return to_string(ElfHeader->e_shnum);
ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(Obj->sections());
if (Arr.empty())
return "0";
return "0 (" + to_string(Arr[0].sh_size) + ")";
}
template <class ELFT>
static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj) {
const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
if (ElfHeader->e_shstrndx != SHN_XINDEX)
return to_string(ElfHeader->e_shstrndx);
ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(Obj->sections());
if (Arr.empty())
return "65535 (corrupt: out of range)";
return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) + ")";
}
template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
const Elf_Ehdr *e = Obj->getHeader();
OS << "ELF Header:\n";
OS << " Magic: ";
std::string Str;
for (int i = 0; i < ELF::EI_NIDENT; i++)
OS << format(" %02x", static_cast<int>(e->e_ident[i]));
OS << "\n";
Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
printFields(OS, "Class:", Str);
Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding));
printFields(OS, "Data:", Str);
OS.PadToColumn(2u);
OS << "Version:";
OS.PadToColumn(37u);
OS << to_hexString(e->e_ident[ELF::EI_VERSION]);
if (e->e_version == ELF::EV_CURRENT)
OS << " (current)";
OS << "\n";
Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI));
printFields(OS, "OS/ABI:", Str);
Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]);
printFields(OS, "ABI Version:", Str);
Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType));
printFields(OS, "Type:", Str);
Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType));
printFields(OS, "Machine:", Str);
Str = "0x" + to_hexString(e->e_version);
printFields(OS, "Version:", Str);
Str = "0x" + to_hexString(e->e_entry);
printFields(OS, "Entry point address:", Str);
Str = to_string(e->e_phoff) + " (bytes into file)";
printFields(OS, "Start of program headers:", Str);
Str = to_string(e->e_shoff) + " (bytes into file)";
printFields(OS, "Start of section headers:", Str);
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 = getSectionHeadersNumString(Obj);
printFields(OS, "Number of section headers:", Str);
Str = getSectionHeaderTableIndexString(Obj);
printFields(OS, "Section header string table index:", Str);
}
namespace {
struct GroupMember {