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llvm-6502/tools/llvm-readobj/ELFDumper.cpp
David Majnemer 01ea611601 Object: BSS/virtual sections don't have contents 
Users of getSectionContents shouldn't try to pass in BSS or virtual
sections.  In all instances, this is a bug in the code calling this
routine.

N.B. Some COFF implementations (like CL) will mark their BSS sections as
taking space on disk.  This would confuse COFFObjectFile into thinking
the section is larger than the file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218549 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-26 22:32:16 +00:00

1242 lines
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//===-- ELFDumper.cpp - ELF-specific dumper ---------------------*- C++ -*-===//
//
// 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 "llvm-readobj.h"
#include "ARMAttributeParser.h"
#include "ARMEHABIPrinter.h"
#include "Error.h"
#include "ObjDumper.h"
#include "StreamWriter.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace llvm::object;
using namespace ELF;
#define LLVM_READOBJ_ENUM_CASE(ns, enum) \
case ns::enum: return #enum;
namespace {
template<typename ELFT>
class ELFDumper : public ObjDumper {
public:
ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
: ObjDumper(Writer), Obj(Obj) {}
void printFileHeaders() override;
void printSections() override;
void printRelocations() override;
void printSymbols() override;
void printDynamicSymbols() override;
void printUnwindInfo() override;
void printDynamicTable() override;
void printNeededLibraries() override;
void printProgramHeaders() override;
void printAttributes() override;
void printMipsPLTGOT() override;
private:
typedef ELFFile<ELFT> ELFO;
typedef typename ELFO::Elf_Shdr Elf_Shdr;
typedef typename ELFO::Elf_Sym Elf_Sym;
void printSymbol(typename ELFO::Elf_Sym_Iter Symbol);
void printRelocations(const Elf_Shdr *Sec);
void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
const ELFO *Obj;
};
template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
if (!Val) {
error(Val.getError());
return Default;
}
return *Val;
}
} // namespace
namespace llvm {
template <class ELFT>
static std::error_code createELFDumper(const ELFFile<ELFT> *Obj,
StreamWriter &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,
StreamWriter &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;
}
} // namespace llvm
template <typename ELFO>
static std::string getFullSymbolName(const ELFO &Obj,
typename ELFO::Elf_Sym_Iter Symbol) {
StringRef SymbolName = errorOrDefault(Obj.getSymbolName(Symbol));
if (!Symbol.isDynamic())
return SymbolName;
std::string FullSymbolName(SymbolName);
bool IsDefault;
ErrorOr<StringRef> Version =
Obj.getSymbolVersion(nullptr, &*Symbol, IsDefault);
if (Version) {
FullSymbolName += (IsDefault ? "@@" : "@");
FullSymbolName += *Version;
} else
error(Version.getError());
return FullSymbolName;
}
template <typename ELFO>
static void
getSectionNameIndex(const ELFO &Obj, typename ELFO::Elf_Sym_Iter Symbol,
StringRef &SectionName, unsigned &SectionIndex) {
SectionIndex = Symbol->st_shndx;
if (SectionIndex == SHN_UNDEF) {
SectionName = "Undefined";
} else if (SectionIndex >= SHN_LOPROC && SectionIndex <= SHN_HIPROC) {
SectionName = "Processor Specific";
} else if (SectionIndex >= SHN_LOOS && SectionIndex <= SHN_HIOS) {
SectionName = "Operating System Specific";
} else if (SectionIndex > SHN_HIOS && SectionIndex < SHN_ABS) {
SectionName = "Reserved";
} else if (SectionIndex == SHN_ABS) {
SectionName = "Absolute";
} else if (SectionIndex == SHN_COMMON) {
SectionName = "Common";
} else {
if (SectionIndex == SHN_XINDEX)
SectionIndex = Obj.getSymbolTableIndex(&*Symbol);
assert(SectionIndex != SHN_XINDEX &&
"getSymbolTableIndex should handle this");
const typename ELFO::Elf_Shdr *Sec = Obj.getSection(SectionIndex);
SectionName = errorOrDefault(Obj.getSectionName(Sec));
}
}
template <class ELFT>
static const typename ELFFile<ELFT>::Elf_Shdr *
findSectionByAddress(const ELFFile<ELFT> *Obj, uint64_t Addr) {
for (const auto &Shdr : Obj->sections())
if (Shdr.sh_addr == Addr)
return &Shdr;
return nullptr;
}
static const EnumEntry<unsigned> ElfClass[] = {
{ "None", ELF::ELFCLASSNONE },
{ "32-bit", ELF::ELFCLASS32 },
{ "64-bit", ELF::ELFCLASS64 },
};
static const EnumEntry<unsigned> ElfDataEncoding[] = {
{ "None", ELF::ELFDATANONE },
{ "LittleEndian", ELF::ELFDATA2LSB },
{ "BigEndian", ELF::ELFDATA2MSB },
};
static const EnumEntry<unsigned> ElfObjectFileType[] = {
{ "None", ELF::ET_NONE },
{ "Relocatable", ELF::ET_REL },
{ "Executable", ELF::ET_EXEC },
{ "SharedObject", ELF::ET_DYN },
{ "Core", ELF::ET_CORE },
};
static const EnumEntry<unsigned> ElfOSABI[] = {
{ "SystemV", ELF::ELFOSABI_NONE },
{ "HPUX", ELF::ELFOSABI_HPUX },
{ "NetBSD", ELF::ELFOSABI_NETBSD },
{ "GNU/Linux", ELF::ELFOSABI_LINUX },
{ "GNU/Hurd", ELF::ELFOSABI_HURD },
{ "Solaris", ELF::ELFOSABI_SOLARIS },
{ "AIX", ELF::ELFOSABI_AIX },
{ "IRIX", ELF::ELFOSABI_IRIX },
{ "FreeBSD", ELF::ELFOSABI_FREEBSD },
{ "TRU64", ELF::ELFOSABI_TRU64 },
{ "Modesto", ELF::ELFOSABI_MODESTO },
{ "OpenBSD", ELF::ELFOSABI_OPENBSD },
{ "OpenVMS", ELF::ELFOSABI_OPENVMS },
{ "NSK", ELF::ELFOSABI_NSK },
{ "AROS", ELF::ELFOSABI_AROS },
{ "FenixOS", ELF::ELFOSABI_FENIXOS },
{ "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI },
{ "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX },
{ "ARM", ELF::ELFOSABI_ARM },
{ "Standalone" , ELF::ELFOSABI_STANDALONE }
};
static const EnumEntry<unsigned> ElfMachineType[] = {
LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_M32 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_386 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68K ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_88K ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_486 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_860 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_S370 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_960 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_S390 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_V800 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SH ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_V850 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CR ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_C166 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CE ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_8051 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_RX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5 ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR ),
LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX )
};
static const EnumEntry<unsigned> ElfSymbolBindings[] = {
{ "Local", ELF::STB_LOCAL },
{ "Global", ELF::STB_GLOBAL },
{ "Weak", ELF::STB_WEAK }
};
static const EnumEntry<unsigned> ElfSymbolTypes[] = {
{ "None", ELF::STT_NOTYPE },
{ "Object", ELF::STT_OBJECT },
{ "Function", ELF::STT_FUNC },
{ "Section", ELF::STT_SECTION },
{ "File", ELF::STT_FILE },
{ "Common", ELF::STT_COMMON },
{ "TLS", ELF::STT_TLS },
{ "GNU_IFunc", ELF::STT_GNU_IFUNC }
};
static const char *getElfSectionType(unsigned Arch, unsigned Type) {
switch (Arch) {
case ELF::EM_ARM:
switch (Type) {
LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
}
case ELF::EM_HEXAGON:
switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
case ELF::EM_X86_64:
switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
case ELF::EM_MIPS:
case ELF::EM_MIPS_RS3_LE:
switch (Type) {
LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS);
}
}
switch (Type) {
LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed );
LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym );
default: return "";
}
}
static const EnumEntry<unsigned> ElfSectionFlags[] = {
LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP ),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS ),
LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION),
LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP )
};
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);
}
}
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);
default: return "";
}
}
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_NAN2008),
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32),
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_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)
};
template<class ELFT>
void ELFDumper<ELFT>::printFileHeaders() {
const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
{
DictScope D(W, "ElfHeader");
{
DictScope D(W, "Ident");
W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0,
4));
W.printEnum ("Class", Header->e_ident[ELF::EI_CLASS],
makeArrayRef(ElfClass));
W.printEnum ("DataEncoding", Header->e_ident[ELF::EI_DATA],
makeArrayRef(ElfDataEncoding));
W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]);
W.printEnum ("OS/ABI", Header->e_ident[ELF::EI_OSABI],
makeArrayRef(ElfOSABI));
W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]);
W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD));
}
W.printEnum ("Type", Header->e_type, makeArrayRef(ElfObjectFileType));
W.printEnum ("Machine", Header->e_machine, makeArrayRef(ElfMachineType));
W.printNumber("Version", Header->e_version);
W.printHex ("Entry", Header->e_entry);
W.printHex ("ProgramHeaderOffset", Header->e_phoff);
W.printHex ("SectionHeaderOffset", Header->e_shoff);
if (Header->e_machine == EM_MIPS)
W.printFlags("Flags", Header->e_flags, makeArrayRef(ElfHeaderMipsFlags),
unsigned(ELF::EF_MIPS_ARCH));
else
W.printFlags("Flags", Header->e_flags);
W.printNumber("HeaderSize", Header->e_ehsize);
W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
W.printNumber("ProgramHeaderCount", Header->e_phnum);
W.printNumber("SectionHeaderEntrySize", Header->e_shentsize);
W.printNumber("SectionHeaderCount", Header->e_shnum);
W.printNumber("StringTableSectionIndex", Header->e_shstrndx);
}
}
template<class ELFT>
void ELFDumper<ELFT>::printSections() {
ListScope SectionsD(W, "Sections");
int SectionIndex = -1;
for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
SecE = Obj->end_sections();
SecI != SecE; ++SecI) {
++SectionIndex;
const Elf_Shdr *Section = &*SecI;
StringRef Name = errorOrDefault(Obj->getSectionName(Section));
DictScope SectionD(W, "Section");
W.printNumber("Index", SectionIndex);
W.printNumber("Name", Name, Section->sh_name);
W.printHex("Type",
getElfSectionType(Obj->getHeader()->e_machine, Section->sh_type),
Section->sh_type);
W.printFlags ("Flags", Section->sh_flags, makeArrayRef(ElfSectionFlags));
W.printHex ("Address", Section->sh_addr);
W.printHex ("Offset", Section->sh_offset);
W.printNumber("Size", Section->sh_size);
W.printNumber("Link", Section->sh_link);
W.printNumber("Info", Section->sh_info);
W.printNumber("AddressAlignment", Section->sh_addralign);
W.printNumber("EntrySize", Section->sh_entsize);
if (opts::SectionRelocations) {
ListScope D(W, "Relocations");
printRelocations(Section);
}
if (opts::SectionSymbols) {
ListScope D(W, "Symbols");
for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
SymE = Obj->end_symbols();
SymI != SymE; ++SymI) {
if (Obj->getSection(&*SymI) == Section)
printSymbol(SymI);
}
}
if (opts::SectionData && Section->sh_type != ELF::SHT_NOBITS) {
ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(Section));
W.printBinaryBlock("SectionData",
StringRef((const char *)Data.data(), Data.size()));
}
}
}
template<class ELFT>
void ELFDumper<ELFT>::printRelocations() {
ListScope D(W, "Relocations");
int SectionNumber = -1;
for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
SecE = Obj->end_sections();
SecI != SecE; ++SecI) {
++SectionNumber;
if (SecI->sh_type != ELF::SHT_REL && SecI->sh_type != ELF::SHT_RELA)
continue;
StringRef Name = errorOrDefault(Obj->getSectionName(&*SecI));
W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
W.indent();
printRelocations(&*SecI);
W.unindent();
W.startLine() << "}\n";
}
}
template <class ELFT>
void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) {
switch (Sec->sh_type) {
case ELF::SHT_REL:
for (typename ELFO::Elf_Rel_Iter RI = Obj->begin_rel(Sec),
RE = Obj->end_rel(Sec);
RI != RE; ++RI) {
typename ELFO::Elf_Rela Rela;
Rela.r_offset = RI->r_offset;
Rela.r_info = RI->r_info;
Rela.r_addend = 0;
printRelocation(Sec, Rela);
}
break;
case ELF::SHT_RELA:
for (typename ELFO::Elf_Rela_Iter RI = Obj->begin_rela(Sec),
RE = Obj->end_rela(Sec);
RI != RE; ++RI) {
printRelocation(Sec, *RI);
}
break;
}
}
template <class ELFT>
void ELFDumper<ELFT>::printRelocation(const Elf_Shdr *Sec,
typename ELFO::Elf_Rela Rel) {
SmallString<32> RelocName;
Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
StringRef SymbolName;
std::pair<const Elf_Shdr *, const Elf_Sym *> Sym =
Obj->getRelocationSymbol(Sec, &Rel);
if (Sym.first)
SymbolName = errorOrDefault(Obj->getSymbolName(Sym.first, Sym.second));
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.size() > 0 ? SymbolName : "-");
W.printHex("Addend", Rel.r_addend);
} else {
raw_ostream& OS = W.startLine();
OS << W.hex(Rel.r_offset)
<< " " << RelocName
<< " " << (SymbolName.size() > 0 ? SymbolName : "-")
<< " " << W.hex(Rel.r_addend)
<< "\n";
}
}
template<class ELFT>
void ELFDumper<ELFT>::printSymbols() {
ListScope Group(W, "Symbols");
for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
SymE = Obj->end_symbols();
SymI != SymE; ++SymI) {
printSymbol(SymI);
}
}
template<class ELFT>
void ELFDumper<ELFT>::printDynamicSymbols() {
ListScope Group(W, "DynamicSymbols");
for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_dynamic_symbols(),
SymE = Obj->end_dynamic_symbols();
SymI != SymE; ++SymI) {
printSymbol(SymI);
}
}
template <class ELFT>
void ELFDumper<ELFT>::printSymbol(typename ELFO::Elf_Sym_Iter Symbol) {
unsigned SectionIndex = 0;
StringRef SectionName;
getSectionNameIndex(*Obj, Symbol, SectionName, SectionIndex);
std::string FullSymbolName = getFullSymbolName(*Obj, Symbol);
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));
W.printEnum ("Type", Symbol->getType(), makeArrayRef(ElfSymbolTypes));
W.printNumber("Other", Symbol->st_other);
W.printHex("Section", SectionName, SectionIndex);
}
#define LLVM_READOBJ_TYPE_CASE(name) \
case DT_##name: return #name
static const char *getTypeString(uint64_t Type) {
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(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(VERNEED);
LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
LLVM_READOBJ_TYPE_CASE(VERSYM);
LLVM_READOBJ_TYPE_CASE(RELCOUNT);
LLVM_READOBJ_TYPE_CASE(GNU_HASH);
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);
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> 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) {
typedef EnumEntry<TFlag> FlagEntry;
typedef SmallVector<FlagEntry, 10> FlagVector;
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>
static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
bool Is64, raw_ostream &OS) {
switch (Type) {
case DT_PLTREL:
if (Value == DT_REL) {
OS << "REL";
break;
} else if (Value == DT_RELA) {
OS << "RELA";
break;
}
// 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_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_PLTGOT:
OS << format("0x%" PRIX64, Value);
break;
case DT_RELCOUNT:
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:
OS << "SharedLibrary (" << O->getDynamicString(Value) << ")";
break;
case DT_SONAME:
OS << "LibrarySoname (" << O->getDynamicString(Value) << ")";
break;
case DT_RPATH:
case DT_RUNPATH:
OS << O->getDynamicString(Value);
break;
case DT_MIPS_FLAGS:
printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
break;
case DT_FLAGS:
printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
break;
}
}
template<class ELFT>
void ELFDumper<ELFT>::printUnwindInfo() {
W.startLine() << "UnwindInfo not implemented.\n";
}
namespace {
template <>
void ELFDumper<ELFType<support::little, 2, false> >::printUnwindInfo() {
const unsigned Machine = Obj->getHeader()->e_machine;
if (Machine == EM_ARM) {
ARM::EHABI::PrinterContext<ELFType<support::little, 2, false> > Ctx(W, Obj);
return Ctx.PrintUnwindInformation();
}
W.startLine() << "UnwindInfo not implemented.\n";
}
}
template<class ELFT>
void ELFDumper<ELFT>::printDynamicTable() {
auto DynTable = Obj->dynamic_table(true);
ptrdiff_t Total = std::distance(DynTable.begin(), DynTable.end());
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";
for (const auto &Entry : DynTable) {
W.startLine()
<< " "
<< format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Entry.getTag())
<< " " << format("%-21s", getTypeString(Entry.getTag()));
printValue(Obj, Entry.getTag(), Entry.getVal(), Is64, OS);
OS << "\n";
}
W.startLine() << "]\n";
}
template<class ELFT>
void ELFDumper<ELFT>::printNeededLibraries() {
ListScope D(W, "NeededLibraries");
typedef std::vector<StringRef> LibsTy;
LibsTy Libs;
for (const auto &Entry : Obj->dynamic_table())
if (Entry.d_tag == ELF::DT_NEEDED)
Libs.push_back(Obj->getDynamicString(Entry.d_un.d_val));
std::stable_sort(Libs.begin(), Libs.end());
for (LibsTy::const_iterator I = Libs.begin(), E = Libs.end(); I != E; ++I) {
outs() << " " << *I << "\n";
}
}
template<class ELFT>
void ELFDumper<ELFT>::printProgramHeaders() {
ListScope L(W, "ProgramHeaders");
for (typename ELFO::Elf_Phdr_Iter PI = Obj->begin_program_headers(),
PE = Obj->end_program_headers();
PI != PE; ++PI) {
DictScope P(W, "ProgramHeader");
W.printHex ("Type",
getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
PI->p_type);
W.printHex ("Offset", PI->p_offset);
W.printHex ("VirtualAddress", PI->p_vaddr);
W.printHex ("PhysicalAddress", PI->p_paddr);
W.printNumber("FileSize", PI->p_filesz);
W.printNumber("MemSize", PI->p_memsz);
W.printFlags ("Flags", PI->p_flags, makeArrayRef(ElfSegmentFlags));
W.printNumber("Alignment", PI->p_align);
}
}
template <class ELFT>
void ELFDumper<ELFT>::printAttributes() {
W.startLine() << "Attributes not implemented.\n";
}
namespace {
template <>
void ELFDumper<ELFType<support::little, 2, false> >::printAttributes() {
if (Obj->getHeader()->e_machine != EM_ARM) {
W.startLine() << "Attributes not implemented.\n";
return;
}
DictScope BA(W, "BuildAttributes");
for (ELFO::Elf_Shdr_Iter SI = Obj->begin_sections(), SE = Obj->end_sections();
SI != SE; ++SI) {
if (SI->sh_type != ELF::SHT_ARM_ATTRIBUTES)
continue;
ErrorOr<ArrayRef<uint8_t> > Contents = Obj->getSectionContents(&(*SI));
if (!Contents)
continue;
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);
}
}
}
namespace {
template <class ELFT> class MipsGOTParser {
public:
typedef object::ELFFile<ELFT> ObjectFile;
typedef typename ObjectFile::Elf_Shdr Elf_Shdr;
MipsGOTParser(const ObjectFile *Obj, StreamWriter &W) : Obj(Obj), W(W) {}
void parseGOT(const Elf_Shdr &GOTShdr);
private:
typedef typename ObjectFile::Elf_Sym_Iter Elf_Sym_Iter;
typedef typename ObjectFile::Elf_Addr GOTEntry;
typedef typename ObjectFile::template ELFEntityIterator<const GOTEntry>
GOTIter;
const ObjectFile *Obj;
StreamWriter &W;
std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
GOTIter makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
bool getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym);
void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
Elf_Sym_Iter Sym);
};
}
template <class ELFT>
void MipsGOTParser<ELFT>::parseGOT(const Elf_Shdr &GOTShdr) {
// 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
ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(&GOTShdr);
if (!GOT) {
W.startLine() << "The .got section is empty.\n";
return;
}
uint64_t DtLocalGotNum;
uint64_t DtGotSym;
if (!getGOTTags(DtLocalGotNum, DtGotSym))
return;
if (DtLocalGotNum > getGOTTotal(*GOT)) {
W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n";
return;
}
Elf_Sym_Iter DynSymBegin = Obj->begin_dynamic_symbols();
Elf_Sym_Iter DynSymEnd = Obj->end_dynamic_symbols();
std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
if (DtGotSym > DynSymTotal) {
W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n";
return;
}
std::size_t GlobalGotNum = DynSymTotal - DtGotSym;
if (DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n";
return;
}
GOTIter GotBegin = makeGOTIter(*GOT, 0);
GOTIter GotLocalEnd = makeGOTIter(*GOT, DtLocalGotNum);
GOTIter 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");
GOTIter GotGlobalEnd = makeGOTIter(*GOT, DtLocalGotNum + GlobalGotNum);
Elf_Sym_Iter GotDynSym = DynSymBegin + DtGotSym;
for (; It != GotGlobalEnd; ++It) {
DictScope D(W, "Entry");
printGlobalGotEntry(GOTShdr.sh_addr, GotBegin, It, GotDynSym++);
}
}
std::size_t SpecGotNum = getGOTTotal(*GOT) - DtLocalGotNum - GlobalGotNum;
W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
}
template <class ELFT>
std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
return GOT.size() / sizeof(GOTEntry);
}
template <class ELFT>
typename MipsGOTParser<ELFT>::GOTIter
MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
const char *Data = reinterpret_cast<const char *>(GOT.data());
return GOTIter(sizeof(GOTEntry), Data + EntryNum * sizeof(GOTEntry));
}
template <class ELFT>
bool MipsGOTParser<ELFT>::getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym) {
bool FoundLocalGotNum = false;
bool FoundGotSym = false;
for (const auto &Entry : Obj->dynamic_table()) {
switch (Entry.getTag()) {
case ELF::DT_MIPS_LOCAL_GOTNO:
LocalGotNum = Entry.getVal();
FoundLocalGotNum = true;
break;
case ELF::DT_MIPS_GOTSYM:
GotSym = Entry.getVal();
FoundGotSym = true;
break;
}
}
if (!FoundLocalGotNum) {
W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
return false;
}
if (!FoundGotSym) {
W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
return false;
}
return true;
}
template <class ELFT>
void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, GOTIter BeginIt,
GOTIter 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, GOTIter BeginIt,
GOTIter It, Elf_Sym_Iter Sym) {
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, SectionName, SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
std::string FullSymbolName = getFullSymbolName(*Obj, Sym);
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;
}
llvm::Optional<uint64_t> DtPltGot;
for (const auto &Entry : Obj->dynamic_table()) {
if (Entry.getTag() == ELF::DT_PLTGOT) {
DtPltGot = Entry.getVal();
break;
}
}
if (!DtPltGot) {
W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
return;
}
const Elf_Shdr *GotShdr = findSectionByAddress(Obj, *DtPltGot);
if (!GotShdr) {
W.startLine() << "There is no .got section in the file.\n";
return;
}
MipsGOTParser<ELFT>(Obj, W).parseGOT(*GotShdr);
}
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