1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "ARMEHABIPrinter.h" 16 #include "Error.h" 17 #include "ObjDumper.h" 18 #include "StackMapPrinter.h" 19 #include "llvm-readobj.h" 20 #include "llvm/ADT/ArrayRef.h" 21 #include "llvm/ADT/DenseMap.h" 22 #include "llvm/ADT/Optional.h" 23 #include "llvm/ADT/PointerIntPair.h" 24 #include "llvm/ADT/SmallString.h" 25 #include "llvm/ADT/SmallVector.h" 26 #include "llvm/ADT/STLExtras.h" 27 #include "llvm/ADT/StringExtras.h" 28 #include "llvm/ADT/StringRef.h" 29 #include "llvm/ADT/Twine.h" 30 #include "llvm/BinaryFormat/ELF.h" 31 #include "llvm/Object/ELF.h" 32 #include "llvm/Object/ELFObjectFile.h" 33 #include "llvm/Object/ELFTypes.h" 34 #include "llvm/Object/Error.h" 35 #include "llvm/Object/ObjectFile.h" 36 #include "llvm/Object/StackMapParser.h" 37 #include "llvm/Support/AMDGPUMetadata.h" 38 #include "llvm/Support/ARMAttributeParser.h" 39 #include "llvm/Support/ARMBuildAttributes.h" 40 #include "llvm/Support/Casting.h" 41 #include "llvm/Support/Compiler.h" 42 #include "llvm/Support/Endian.h" 43 #include "llvm/Support/ErrorHandling.h" 44 #include "llvm/Support/Format.h" 45 #include "llvm/Support/FormattedStream.h" 46 #include "llvm/Support/MathExtras.h" 47 #include "llvm/Support/MipsABIFlags.h" 48 #include "llvm/Support/ScopedPrinter.h" 49 #include "llvm/Support/raw_ostream.h" 50 #include <algorithm> 51 #include <cinttypes> 52 #include <cstddef> 53 #include <cstdint> 54 #include <cstdlib> 55 #include <iterator> 56 #include <memory> 57 #include <string> 58 #include <system_error> 59 #include <vector> 60 61 using namespace llvm; 62 using namespace llvm::object; 63 using namespace ELF; 64 65 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 66 case ns::enum: return #enum; 67 68 #define ENUM_ENT(enum, altName) \ 69 { #enum, altName, ELF::enum } 70 71 #define ENUM_ENT_1(enum) \ 72 { #enum, #enum, ELF::enum } 73 74 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 75 case ns::enum: \ 76 return std::string(#enum).substr(3); 77 78 #define TYPEDEF_ELF_TYPES(ELFT) \ 79 using ELFO = ELFFile<ELFT>; \ 80 using Elf_Addr = typename ELFT::Addr; \ 81 using Elf_Shdr = typename ELFT::Shdr; \ 82 using Elf_Sym = typename ELFT::Sym; \ 83 using Elf_Dyn = typename ELFT::Dyn; \ 84 using Elf_Dyn_Range = typename ELFT::DynRange; \ 85 using Elf_Rel = typename ELFT::Rel; \ 86 using Elf_Rela = typename ELFT::Rela; \ 87 using Elf_Rel_Range = typename ELFT::RelRange; \ 88 using Elf_Rela_Range = typename ELFT::RelaRange; \ 89 using Elf_Phdr = typename ELFT::Phdr; \ 90 using Elf_Half = typename ELFT::Half; \ 91 using Elf_Ehdr = typename ELFT::Ehdr; \ 92 using Elf_Word = typename ELFT::Word; \ 93 using Elf_Hash = typename ELFT::Hash; \ 94 using Elf_GnuHash = typename ELFT::GnuHash; \ 95 using Elf_Sym_Range = typename ELFT::SymRange; \ 96 using Elf_Versym = typename ELFT::Versym; \ 97 using Elf_Verneed = typename ELFT::Verneed; \ 98 using Elf_Vernaux = typename ELFT::Vernaux; \ 99 using Elf_Verdef = typename ELFT::Verdef; \ 100 using Elf_Verdaux = typename ELFT::Verdaux; \ 101 using uintX_t = typename ELFT::uint; 102 103 namespace { 104 105 template <class ELFT> class DumpStyle; 106 107 /// Represents a contiguous uniform range in the file. We cannot just create a 108 /// range directly because when creating one of these from the .dynamic table 109 /// the size, entity size and virtual address are different entries in arbitrary 110 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 111 struct DynRegionInfo { 112 DynRegionInfo() = default; 113 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 114 : Addr(A), Size(S), EntSize(ES) {} 115 116 /// \brief Address in current address space. 117 const void *Addr = nullptr; 118 /// \brief Size in bytes of the region. 119 uint64_t Size = 0; 120 /// \brief Size of each entity in the region. 121 uint64_t EntSize = 0; 122 123 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 124 const Type *Start = reinterpret_cast<const Type *>(Addr); 125 if (!Start) 126 return {Start, Start}; 127 if (EntSize != sizeof(Type) || Size % EntSize) 128 reportError("Invalid entity size"); 129 return {Start, Start + (Size / EntSize)}; 130 } 131 }; 132 133 template<typename ELFT> 134 class ELFDumper : public ObjDumper { 135 public: 136 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 137 138 void printFileHeaders() override; 139 void printSections() override; 140 void printRelocations() override; 141 void printDynamicRelocations() override; 142 void printSymbols() override; 143 void printDynamicSymbols() override; 144 void printUnwindInfo() override; 145 146 void printDynamicTable() override; 147 void printNeededLibraries() override; 148 void printProgramHeaders() override; 149 void printHashTable() override; 150 void printGnuHashTable() override; 151 void printLoadName() override; 152 void printVersionInfo() override; 153 void printGroupSections() override; 154 155 void printAttributes() override; 156 void printMipsPLTGOT() override; 157 void printMipsABIFlags() override; 158 void printMipsReginfo() override; 159 void printMipsOptions() override; 160 161 void printStackMap() const override; 162 163 void printHashHistogram() override; 164 165 void printNotes() override; 166 167 private: 168 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 169 170 TYPEDEF_ELF_TYPES(ELFT) 171 172 DynRegionInfo checkDRI(DynRegionInfo DRI) { 173 if (DRI.Addr < Obj->base() || 174 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 175 error(llvm::object::object_error::parse_failed); 176 return DRI; 177 } 178 179 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 180 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 181 } 182 183 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 184 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 185 } 186 187 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 188 189 void printValue(uint64_t Type, uint64_t Value); 190 191 StringRef getDynamicString(uint64_t Offset) const; 192 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 193 bool &IsDefault) const; 194 void LoadVersionMap() const; 195 void LoadVersionNeeds(const Elf_Shdr *ec) const; 196 void LoadVersionDefs(const Elf_Shdr *sec) const; 197 198 const ELFO *Obj; 199 DynRegionInfo DynRelRegion; 200 DynRegionInfo DynRelaRegion; 201 DynRegionInfo DynPLTRelRegion; 202 DynRegionInfo DynSymRegion; 203 DynRegionInfo DynamicTable; 204 StringRef DynamicStringTable; 205 StringRef SOName; 206 const Elf_Hash *HashTable = nullptr; 207 const Elf_GnuHash *GnuHashTable = nullptr; 208 const Elf_Shdr *DotSymtabSec = nullptr; 209 StringRef DynSymtabName; 210 ArrayRef<Elf_Word> ShndxTable; 211 212 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 213 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 214 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 215 216 // Records for each version index the corresponding Verdef or Vernaux entry. 217 // This is filled the first time LoadVersionMap() is called. 218 class VersionMapEntry : public PointerIntPair<const void *, 1> { 219 public: 220 // If the integer is 0, this is an Elf_Verdef*. 221 // If the integer is 1, this is an Elf_Vernaux*. 222 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 223 VersionMapEntry(const Elf_Verdef *verdef) 224 : PointerIntPair<const void *, 1>(verdef, 0) {} 225 VersionMapEntry(const Elf_Vernaux *vernaux) 226 : PointerIntPair<const void *, 1>(vernaux, 1) {} 227 228 bool isNull() const { return getPointer() == nullptr; } 229 bool isVerdef() const { return !isNull() && getInt() == 0; } 230 bool isVernaux() const { return !isNull() && getInt() == 1; } 231 const Elf_Verdef *getVerdef() const { 232 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 233 } 234 const Elf_Vernaux *getVernaux() const { 235 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 236 } 237 }; 238 mutable SmallVector<VersionMapEntry, 16> VersionMap; 239 240 public: 241 Elf_Dyn_Range dynamic_table() const { 242 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 243 } 244 245 Elf_Sym_Range dynamic_symbols() const { 246 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 247 } 248 249 Elf_Rel_Range dyn_rels() const; 250 Elf_Rela_Range dyn_relas() const; 251 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 252 bool IsDynamic) const; 253 void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym, 254 StringRef &SectionName, 255 unsigned &SectionIndex) const; 256 257 void printSymbolsHelper(bool IsDynamic) const; 258 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 259 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 260 StringRef getDynamicStringTable() const { return DynamicStringTable; } 261 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 262 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 263 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 264 const Elf_Hash *getHashTable() const { return HashTable; } 265 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 266 }; 267 268 template <class ELFT> 269 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 270 StringRef StrTable, SymtabName; 271 size_t Entries = 0; 272 Elf_Sym_Range Syms(nullptr, nullptr); 273 if (IsDynamic) { 274 StrTable = DynamicStringTable; 275 Syms = dynamic_symbols(); 276 SymtabName = DynSymtabName; 277 if (DynSymRegion.Addr) 278 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 279 } else { 280 if (!DotSymtabSec) 281 return; 282 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 283 Syms = unwrapOrError(Obj->symbols(DotSymtabSec)); 284 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 285 Entries = DotSymtabSec->getEntityCount(); 286 } 287 if (Syms.begin() == Syms.end()) 288 return; 289 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 290 for (const auto &Sym : Syms) 291 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 292 } 293 294 template <class ELFT> class MipsGOTParser; 295 296 template <typename ELFT> class DumpStyle { 297 public: 298 using Elf_Shdr = typename ELFT::Shdr; 299 using Elf_Sym = typename ELFT::Sym; 300 301 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 302 virtual ~DumpStyle() = default; 303 304 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 305 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 306 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 307 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 308 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 309 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 310 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 311 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 312 size_t Offset) {} 313 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 314 const Elf_Sym *FirstSym, StringRef StrTable, 315 bool IsDynamic) = 0; 316 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 317 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 318 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0; 319 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; 320 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; 321 const ELFDumper<ELFT> *dumper() const { return Dumper; } 322 323 private: 324 const ELFDumper<ELFT> *Dumper; 325 }; 326 327 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 328 formatted_raw_ostream OS; 329 330 public: 331 TYPEDEF_ELF_TYPES(ELFT) 332 333 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 334 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 335 336 void printFileHeaders(const ELFO *Obj) override; 337 void printGroupSections(const ELFFile<ELFT> *Obj) override; 338 void printRelocations(const ELFO *Obj) override; 339 void printSections(const ELFO *Obj) override; 340 void printSymbols(const ELFO *Obj) override; 341 void printDynamicSymbols(const ELFO *Obj) override; 342 void printDynamicRelocations(const ELFO *Obj) override; 343 void printSymtabMessage(const ELFO *Obj, StringRef Name, 344 size_t Offset) override; 345 void printProgramHeaders(const ELFO *Obj) override; 346 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 347 void printNotes(const ELFFile<ELFT> *Obj) override; 348 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 349 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 350 351 private: 352 struct Field { 353 StringRef Str; 354 unsigned Column; 355 356 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 357 Field(unsigned Col) : Str(""), Column(Col) {} 358 }; 359 360 template <typename T, typename TEnum> 361 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 362 for (const auto &EnumItem : EnumValues) 363 if (EnumItem.Value == Value) 364 return EnumItem.AltName; 365 return to_hexString(Value, false); 366 } 367 368 formatted_raw_ostream &printField(struct Field F) { 369 if (F.Column != 0) 370 OS.PadToColumn(F.Column); 371 OS << F.Str; 372 OS.flush(); 373 return OS; 374 } 375 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym, 376 StringRef StrTable, uint32_t Bucket); 377 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 378 const Elf_Rela &R, bool IsRela); 379 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 380 StringRef StrTable, bool IsDynamic) override; 381 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 382 const Elf_Sym *FirstSym); 383 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 384 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 385 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 386 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 387 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 388 }; 389 390 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 391 public: 392 TYPEDEF_ELF_TYPES(ELFT) 393 394 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 395 : DumpStyle<ELFT>(Dumper), W(W) {} 396 397 void printFileHeaders(const ELFO *Obj) override; 398 void printGroupSections(const ELFFile<ELFT> *Obj) override; 399 void printRelocations(const ELFO *Obj) override; 400 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 401 void printSections(const ELFO *Obj) override; 402 void printSymbols(const ELFO *Obj) override; 403 void printDynamicSymbols(const ELFO *Obj) override; 404 void printDynamicRelocations(const ELFO *Obj) override; 405 void printProgramHeaders(const ELFO *Obj) override; 406 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 407 void printNotes(const ELFFile<ELFT> *Obj) override; 408 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 409 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 410 411 private: 412 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 413 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 414 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 415 StringRef StrTable, bool IsDynamic) override; 416 417 ScopedPrinter &W; 418 }; 419 420 } // end anonymous namespace 421 422 namespace llvm { 423 424 template <class ELFT> 425 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 426 ScopedPrinter &Writer, 427 std::unique_ptr<ObjDumper> &Result) { 428 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 429 return readobj_error::success; 430 } 431 432 std::error_code createELFDumper(const object::ObjectFile *Obj, 433 ScopedPrinter &Writer, 434 std::unique_ptr<ObjDumper> &Result) { 435 // Little-endian 32-bit 436 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 437 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 438 439 // Big-endian 32-bit 440 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 441 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 442 443 // Little-endian 64-bit 444 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 445 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 446 447 // Big-endian 64-bit 448 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 449 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 450 451 return readobj_error::unsupported_obj_file_format; 452 } 453 454 } // end namespace llvm 455 456 // Iterate through the versions needed section, and place each Elf_Vernaux 457 // in the VersionMap according to its index. 458 template <class ELFT> 459 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 460 unsigned vn_size = sec->sh_size; // Size of section in bytes 461 unsigned vn_count = sec->sh_info; // Number of Verneed entries 462 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 463 const char *sec_end = sec_start + vn_size; 464 // The first Verneed entry is at the start of the section. 465 const char *p = sec_start; 466 for (unsigned i = 0; i < vn_count; i++) { 467 if (p + sizeof(Elf_Verneed) > sec_end) 468 report_fatal_error("Section ended unexpectedly while scanning " 469 "version needed records."); 470 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 471 if (vn->vn_version != ELF::VER_NEED_CURRENT) 472 report_fatal_error("Unexpected verneed version"); 473 // Iterate through the Vernaux entries 474 const char *paux = p + vn->vn_aux; 475 for (unsigned j = 0; j < vn->vn_cnt; j++) { 476 if (paux + sizeof(Elf_Vernaux) > sec_end) 477 report_fatal_error("Section ended unexpected while scanning auxiliary " 478 "version needed records."); 479 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 480 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 481 if (index >= VersionMap.size()) 482 VersionMap.resize(index + 1); 483 VersionMap[index] = VersionMapEntry(vna); 484 paux += vna->vna_next; 485 } 486 p += vn->vn_next; 487 } 488 } 489 490 // Iterate through the version definitions, and place each Elf_Verdef 491 // in the VersionMap according to its index. 492 template <class ELFT> 493 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 494 unsigned vd_size = sec->sh_size; // Size of section in bytes 495 unsigned vd_count = sec->sh_info; // Number of Verdef entries 496 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 497 const char *sec_end = sec_start + vd_size; 498 // The first Verdef entry is at the start of the section. 499 const char *p = sec_start; 500 for (unsigned i = 0; i < vd_count; i++) { 501 if (p + sizeof(Elf_Verdef) > sec_end) 502 report_fatal_error("Section ended unexpectedly while scanning " 503 "version definitions."); 504 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 505 if (vd->vd_version != ELF::VER_DEF_CURRENT) 506 report_fatal_error("Unexpected verdef version"); 507 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 508 if (index >= VersionMap.size()) 509 VersionMap.resize(index + 1); 510 VersionMap[index] = VersionMapEntry(vd); 511 p += vd->vd_next; 512 } 513 } 514 515 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 516 // If there is no dynamic symtab or version table, there is nothing to do. 517 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 518 return; 519 520 // Has the VersionMap already been loaded? 521 if (VersionMap.size() > 0) 522 return; 523 524 // The first two version indexes are reserved. 525 // Index 0 is LOCAL, index 1 is GLOBAL. 526 VersionMap.push_back(VersionMapEntry()); 527 VersionMap.push_back(VersionMapEntry()); 528 529 if (dot_gnu_version_d_sec) 530 LoadVersionDefs(dot_gnu_version_d_sec); 531 532 if (dot_gnu_version_r_sec) 533 LoadVersionNeeds(dot_gnu_version_r_sec); 534 } 535 536 template <typename ELFO, class ELFT> 537 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 538 const typename ELFO::Elf_Shdr *Sec, 539 ScopedPrinter &W) { 540 DictScope SS(W, "Version symbols"); 541 if (!Sec) 542 return; 543 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 544 W.printNumber("Section Name", Name, Sec->sh_name); 545 W.printHex("Address", Sec->sh_addr); 546 W.printHex("Offset", Sec->sh_offset); 547 W.printNumber("Link", Sec->sh_link); 548 549 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 550 StringRef StrTable = Dumper->getDynamicStringTable(); 551 552 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 553 ListScope Syms(W, "Symbols"); 554 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 555 DictScope S(W, "Symbol"); 556 std::string FullSymbolName = 557 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 558 W.printNumber("Version", *P); 559 W.printString("Name", FullSymbolName); 560 P += sizeof(typename ELFO::Elf_Half); 561 } 562 } 563 564 static const EnumEntry<unsigned> SymVersionFlags[] = { 565 {"Base", "BASE", VER_FLG_BASE}, 566 {"Weak", "WEAK", VER_FLG_WEAK}, 567 {"Info", "INFO", VER_FLG_INFO}}; 568 569 template <typename ELFO, class ELFT> 570 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 571 const ELFO *Obj, 572 const typename ELFO::Elf_Shdr *Sec, 573 ScopedPrinter &W) { 574 using VerDef = typename ELFO::Elf_Verdef; 575 using VerdAux = typename ELFO::Elf_Verdaux; 576 577 DictScope SD(W, "SHT_GNU_verdef"); 578 if (!Sec) 579 return; 580 581 // The number of entries in the section SHT_GNU_verdef 582 // is determined by DT_VERDEFNUM tag. 583 unsigned VerDefsNum = 0; 584 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 585 if (Dyn.d_tag == DT_VERDEFNUM) 586 VerDefsNum = Dyn.d_un.d_val; 587 } 588 const uint8_t *SecStartAddress = 589 (const uint8_t *)Obj->base() + Sec->sh_offset; 590 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 591 const uint8_t *P = SecStartAddress; 592 const typename ELFO::Elf_Shdr *StrTab = 593 unwrapOrError(Obj->getSection(Sec->sh_link)); 594 595 while (VerDefsNum--) { 596 if (P + sizeof(VerDef) > SecEndAddress) 597 report_fatal_error("invalid offset in the section"); 598 599 auto *VD = reinterpret_cast<const VerDef *>(P); 600 DictScope Def(W, "Definition"); 601 W.printNumber("Version", VD->vd_version); 602 W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags)); 603 W.printNumber("Index", VD->vd_ndx); 604 W.printNumber("Hash", VD->vd_hash); 605 W.printString("Name", 606 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 607 VD->getAux()->vda_name))); 608 if (!VD->vd_cnt) 609 report_fatal_error("at least one definition string must exist"); 610 if (VD->vd_cnt > 2) 611 report_fatal_error("more than one predecessor is not expected"); 612 613 if (VD->vd_cnt == 2) { 614 const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next; 615 const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux); 616 W.printString("Predecessor", 617 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 618 Aux->vda_name))); 619 } 620 621 P += VD->vd_next; 622 } 623 } 624 625 template <typename ELFO, class ELFT> 626 static void printVersionDependencySection(ELFDumper<ELFT> *Dumper, 627 const ELFO *Obj, 628 const typename ELFO::Elf_Shdr *Sec, 629 ScopedPrinter &W) { 630 using VerNeed = typename ELFO::Elf_Verneed; 631 using VernAux = typename ELFO::Elf_Vernaux; 632 633 DictScope SD(W, "SHT_GNU_verneed"); 634 if (!Sec) 635 return; 636 637 unsigned VerNeedNum = 0; 638 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) 639 if (Dyn.d_tag == DT_VERNEEDNUM) 640 VerNeedNum = Dyn.d_un.d_val; 641 642 const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset; 643 const typename ELFO::Elf_Shdr *StrTab = 644 unwrapOrError(Obj->getSection(Sec->sh_link)); 645 646 const uint8_t *P = SecData; 647 for (unsigned I = 0; I < VerNeedNum; ++I) { 648 const VerNeed *Need = reinterpret_cast<const VerNeed *>(P); 649 DictScope Entry(W, "Dependency"); 650 W.printNumber("Version", Need->vn_version); 651 W.printNumber("Count", Need->vn_cnt); 652 W.printString("FileName", 653 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 654 Need->vn_file))); 655 656 const uint8_t *PAux = P + Need->vn_aux; 657 for (unsigned J = 0; J < Need->vn_cnt; ++J) { 658 const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux); 659 DictScope Entry(W, "Entry"); 660 W.printNumber("Hash", Aux->vna_hash); 661 W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags)); 662 W.printNumber("Index", Aux->vna_other); 663 W.printString("Name", 664 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 665 Aux->vna_name))); 666 PAux += Aux->vna_next; 667 } 668 P += Need->vn_next; 669 } 670 } 671 672 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 673 // Dump version symbol section. 674 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 675 676 // Dump version definition section. 677 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 678 679 // Dump version dependency section. 680 printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W); 681 } 682 683 template <typename ELFT> 684 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 685 const Elf_Sym *symb, 686 bool &IsDefault) const { 687 // This is a dynamic symbol. Look in the GNU symbol version table. 688 if (!dot_gnu_version_sec) { 689 // No version table. 690 IsDefault = false; 691 return StringRef(""); 692 } 693 694 // Determine the position in the symbol table of this entry. 695 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 696 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 697 sizeof(Elf_Sym); 698 699 // Get the corresponding version index entry 700 const Elf_Versym *vs = unwrapOrError( 701 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index)); 702 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 703 704 // Special markers for unversioned symbols. 705 if (version_index == ELF::VER_NDX_LOCAL || 706 version_index == ELF::VER_NDX_GLOBAL) { 707 IsDefault = false; 708 return StringRef(""); 709 } 710 711 // Lookup this symbol in the version table 712 LoadVersionMap(); 713 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 714 reportError("Invalid version entry"); 715 const VersionMapEntry &entry = VersionMap[version_index]; 716 717 // Get the version name string 718 size_t name_offset; 719 if (entry.isVerdef()) { 720 // The first Verdaux entry holds the name. 721 name_offset = entry.getVerdef()->getAux()->vda_name; 722 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 723 } else { 724 name_offset = entry.getVernaux()->vna_name; 725 IsDefault = false; 726 } 727 if (name_offset >= StrTab.size()) 728 reportError("Invalid string offset"); 729 return StringRef(StrTab.data() + name_offset); 730 } 731 732 template <typename ELFT> 733 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 734 StringRef StrTable, 735 bool IsDynamic) const { 736 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 737 if (!IsDynamic) 738 return SymbolName; 739 740 std::string FullSymbolName(SymbolName); 741 742 bool IsDefault; 743 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 744 FullSymbolName += (IsDefault ? "@@" : "@"); 745 FullSymbolName += Version; 746 return FullSymbolName; 747 } 748 749 template <typename ELFT> 750 void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol, 751 const Elf_Sym *FirstSym, 752 StringRef &SectionName, 753 unsigned &SectionIndex) const { 754 SectionIndex = Symbol->st_shndx; 755 if (Symbol->isUndefined()) 756 SectionName = "Undefined"; 757 else if (Symbol->isProcessorSpecific()) 758 SectionName = "Processor Specific"; 759 else if (Symbol->isOSSpecific()) 760 SectionName = "Operating System Specific"; 761 else if (Symbol->isAbsolute()) 762 SectionName = "Absolute"; 763 else if (Symbol->isCommon()) 764 SectionName = "Common"; 765 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 766 SectionName = "Reserved"; 767 else { 768 if (SectionIndex == SHN_XINDEX) 769 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 770 Symbol, FirstSym, ShndxTable)); 771 const typename ELFT::Shdr *Sec = 772 unwrapOrError(Obj->getSection(SectionIndex)); 773 SectionName = unwrapOrError(Obj->getSectionName(Sec)); 774 } 775 } 776 777 template <class ELFO> 778 static const typename ELFO::Elf_Shdr * 779 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 780 for (const auto &Shdr : unwrapOrError(Obj->sections())) 781 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 782 return &Shdr; 783 return nullptr; 784 } 785 786 template <class ELFO> 787 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 788 StringRef Name) { 789 for (const auto &Shdr : unwrapOrError(Obj.sections())) { 790 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 791 return &Shdr; 792 } 793 return nullptr; 794 } 795 796 static const EnumEntry<unsigned> ElfClass[] = { 797 {"None", "none", ELF::ELFCLASSNONE}, 798 {"32-bit", "ELF32", ELF::ELFCLASS32}, 799 {"64-bit", "ELF64", ELF::ELFCLASS64}, 800 }; 801 802 static const EnumEntry<unsigned> ElfDataEncoding[] = { 803 {"None", "none", ELF::ELFDATANONE}, 804 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 805 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 806 }; 807 808 static const EnumEntry<unsigned> ElfObjectFileType[] = { 809 {"None", "NONE (none)", ELF::ET_NONE}, 810 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 811 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 812 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 813 {"Core", "CORE (Core file)", ELF::ET_CORE}, 814 }; 815 816 static const EnumEntry<unsigned> ElfOSABI[] = { 817 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 818 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 819 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 820 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 821 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 822 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 823 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 824 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 825 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 826 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 827 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 828 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 829 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 830 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 831 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 832 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 833 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 834 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 835 }; 836 837 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 838 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 839 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 840 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 841 }; 842 843 static const EnumEntry<unsigned> ARMElfOSABI[] = { 844 {"ARM", "ARM", ELF::ELFOSABI_ARM} 845 }; 846 847 static const EnumEntry<unsigned> C6000ElfOSABI[] = { 848 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 849 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 850 }; 851 852 static const EnumEntry<unsigned> ElfMachineType[] = { 853 ENUM_ENT(EM_NONE, "None"), 854 ENUM_ENT(EM_M32, "WE32100"), 855 ENUM_ENT(EM_SPARC, "Sparc"), 856 ENUM_ENT(EM_386, "Intel 80386"), 857 ENUM_ENT(EM_68K, "MC68000"), 858 ENUM_ENT(EM_88K, "MC88000"), 859 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 860 ENUM_ENT(EM_860, "Intel 80860"), 861 ENUM_ENT(EM_MIPS, "MIPS R3000"), 862 ENUM_ENT(EM_S370, "IBM System/370"), 863 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 864 ENUM_ENT(EM_PARISC, "HPPA"), 865 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 866 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 867 ENUM_ENT(EM_960, "Intel 80960"), 868 ENUM_ENT(EM_PPC, "PowerPC"), 869 ENUM_ENT(EM_PPC64, "PowerPC64"), 870 ENUM_ENT(EM_S390, "IBM S/390"), 871 ENUM_ENT(EM_SPU, "SPU"), 872 ENUM_ENT(EM_V800, "NEC V800 series"), 873 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 874 ENUM_ENT(EM_RH32, "TRW RH-32"), 875 ENUM_ENT(EM_RCE, "Motorola RCE"), 876 ENUM_ENT(EM_ARM, "ARM"), 877 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 878 ENUM_ENT(EM_SH, "Hitachi SH"), 879 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 880 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 881 ENUM_ENT(EM_ARC, "ARC"), 882 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 883 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 884 ENUM_ENT(EM_H8S, "Hitachi H8S"), 885 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 886 ENUM_ENT(EM_IA_64, "Intel IA-64"), 887 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 888 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 889 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 890 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 891 ENUM_ENT(EM_PCP, "Siemens PCP"), 892 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 893 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 894 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 895 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 896 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 897 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 898 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 899 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 900 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 901 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 902 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 903 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 904 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 905 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 906 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 907 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 908 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 909 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 910 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 911 ENUM_ENT(EM_VAX, "Digital VAX"), 912 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 913 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 914 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 915 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 916 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 917 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 918 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 919 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 920 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 921 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 922 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 923 ENUM_ENT(EM_V850, "NEC v850"), 924 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 925 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 926 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 927 ENUM_ENT(EM_PJ, "picoJava"), 928 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 929 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 930 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 931 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 932 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 933 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 934 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 935 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 936 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 937 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 938 ENUM_ENT(EM_MAX, "MAX Processor"), 939 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 940 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 941 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 942 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 943 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 944 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 945 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 946 ENUM_ENT(EM_UNICORE, "Unicore"), 947 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 948 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 949 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 950 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 951 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 952 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 953 ENUM_ENT(EM_M16C, "Renesas M16C"), 954 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 955 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 956 ENUM_ENT(EM_M32C, "Renesas M32C"), 957 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 958 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 959 ENUM_ENT(EM_SHARC, "EM_SHARC"), 960 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 961 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 962 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 963 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 964 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 965 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 966 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 967 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 968 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 969 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 970 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 971 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 972 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 973 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 974 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 975 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 976 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 977 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 978 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 979 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 980 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 981 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 982 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 983 ENUM_ENT(EM_RX, "Renesas RX"), 984 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 985 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 986 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 987 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 988 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 989 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 990 ENUM_ENT(EM_L10M, "EM_L10M"), 991 ENUM_ENT(EM_K10M, "EM_K10M"), 992 ENUM_ENT(EM_AARCH64, "AArch64"), 993 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 994 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 995 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 996 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 997 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 998 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 999 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 1000 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 1001 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 1002 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 1003 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 1004 ENUM_ENT(EM_RL78, "Renesas RL78"), 1005 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 1006 ENUM_ENT(EM_78KOR, "EM_78KOR"), 1007 ENUM_ENT(EM_56800EX, "EM_56800EX"), 1008 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 1009 ENUM_ENT(EM_RISCV, "RISC-V"), 1010 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 1011 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1012 ENUM_ENT(EM_BPF, "EM_BPF"), 1013 }; 1014 1015 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 1016 {"Local", "LOCAL", ELF::STB_LOCAL}, 1017 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1018 {"Weak", "WEAK", ELF::STB_WEAK}, 1019 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1020 1021 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1022 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1023 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1024 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1025 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1026 1027 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 1028 {"None", "NOTYPE", ELF::STT_NOTYPE}, 1029 {"Object", "OBJECT", ELF::STT_OBJECT}, 1030 {"Function", "FUNC", ELF::STT_FUNC}, 1031 {"Section", "SECTION", ELF::STT_SECTION}, 1032 {"File", "FILE", ELF::STT_FILE}, 1033 {"Common", "COMMON", ELF::STT_COMMON}, 1034 {"TLS", "TLS", ELF::STT_TLS}, 1035 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 1036 1037 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1038 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1039 }; 1040 1041 static const char *getGroupType(uint32_t Flag) { 1042 if (Flag & ELF::GRP_COMDAT) 1043 return "COMDAT"; 1044 else 1045 return "(unknown)"; 1046 } 1047 1048 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1049 ENUM_ENT(SHF_WRITE, "W"), 1050 ENUM_ENT(SHF_ALLOC, "A"), 1051 ENUM_ENT(SHF_EXCLUDE, "E"), 1052 ENUM_ENT(SHF_EXECINSTR, "X"), 1053 ENUM_ENT(SHF_MERGE, "M"), 1054 ENUM_ENT(SHF_STRINGS, "S"), 1055 ENUM_ENT(SHF_INFO_LINK, "I"), 1056 ENUM_ENT(SHF_LINK_ORDER, "L"), 1057 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 1058 ENUM_ENT(SHF_GROUP, "G"), 1059 ENUM_ENT(SHF_TLS, "T"), 1060 ENUM_ENT(SHF_MASKOS, "o"), 1061 ENUM_ENT(SHF_MASKPROC, "p"), 1062 ENUM_ENT_1(SHF_COMPRESSED), 1063 }; 1064 1065 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1066 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1067 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1068 }; 1069 1070 static const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1071 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE) 1072 }; 1073 1074 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1075 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1076 }; 1077 1078 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1079 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1080 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1081 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1082 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1083 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1084 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1085 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1086 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1087 }; 1088 1089 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1090 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1091 }; 1092 1093 static std::string getGNUFlags(uint64_t Flags) { 1094 std::string Str; 1095 for (auto Entry : ElfSectionFlags) { 1096 uint64_t Flag = Entry.Value & Flags; 1097 Flags &= ~Entry.Value; 1098 switch (Flag) { 1099 case ELF::SHF_WRITE: 1100 case ELF::SHF_ALLOC: 1101 case ELF::SHF_EXECINSTR: 1102 case ELF::SHF_MERGE: 1103 case ELF::SHF_STRINGS: 1104 case ELF::SHF_INFO_LINK: 1105 case ELF::SHF_LINK_ORDER: 1106 case ELF::SHF_OS_NONCONFORMING: 1107 case ELF::SHF_GROUP: 1108 case ELF::SHF_TLS: 1109 case ELF::SHF_EXCLUDE: 1110 Str += Entry.AltName; 1111 break; 1112 default: 1113 if (Flag & ELF::SHF_MASKOS) 1114 Str += "o"; 1115 else if (Flag & ELF::SHF_MASKPROC) 1116 Str += "p"; 1117 else if (Flag) 1118 Str += "x"; 1119 } 1120 } 1121 return Str; 1122 } 1123 1124 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1125 // Check potentially overlapped processor-specific 1126 // program header type. 1127 switch (Arch) { 1128 case ELF::EM_ARM: 1129 switch (Type) { 1130 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1131 } 1132 case ELF::EM_MIPS: 1133 case ELF::EM_MIPS_RS3_LE: 1134 switch (Type) { 1135 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1136 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1137 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1138 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1139 } 1140 } 1141 1142 switch (Type) { 1143 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1144 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1145 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1146 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1147 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1148 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1149 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1150 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1151 1152 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1153 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1154 1155 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1156 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1157 1158 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1159 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1160 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1161 1162 default: return ""; 1163 } 1164 } 1165 1166 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1167 switch (Type) { 1168 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1169 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1170 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1171 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1172 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1173 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1174 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1175 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1176 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1177 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1178 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1179 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1180 default: 1181 // All machine specific PT_* types 1182 switch (Arch) { 1183 case ELF::EM_ARM: 1184 if (Type == ELF::PT_ARM_EXIDX) 1185 return "EXIDX"; 1186 return ""; 1187 case ELF::EM_MIPS: 1188 case ELF::EM_MIPS_RS3_LE: 1189 switch (Type) { 1190 case PT_MIPS_REGINFO: 1191 return "REGINFO"; 1192 case PT_MIPS_RTPROC: 1193 return "RTPROC"; 1194 case PT_MIPS_OPTIONS: 1195 return "OPTIONS"; 1196 case PT_MIPS_ABIFLAGS: 1197 return "ABIFLAGS"; 1198 } 1199 return ""; 1200 } 1201 } 1202 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1203 } 1204 1205 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1206 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1207 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1208 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1209 }; 1210 1211 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1212 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1213 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1214 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1215 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1216 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1217 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1218 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1219 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1220 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1221 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1222 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1223 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1224 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1225 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1226 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1227 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1228 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1229 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1230 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1231 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1232 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1233 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1234 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1235 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1236 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1237 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1238 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1239 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1240 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1241 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1242 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1243 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1244 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1245 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1246 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1247 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1248 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1249 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1250 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1251 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1252 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1253 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1254 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1255 }; 1256 1257 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { 1258 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_NONE), 1259 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_R600), 1260 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_GCN) 1261 }; 1262 1263 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1264 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVC), 1265 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_SINGLE), 1266 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_DOUBLE), 1267 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_QUAD), 1268 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVE) 1269 }; 1270 1271 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1272 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1273 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1274 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1275 }; 1276 1277 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1278 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1279 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1280 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1281 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1282 }; 1283 1284 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1285 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1286 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1287 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1288 }; 1289 1290 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1291 switch (Odk) { 1292 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1293 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1294 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1295 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1296 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1297 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1298 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1299 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1300 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1301 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1302 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1303 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1304 default: 1305 return "Unknown"; 1306 } 1307 } 1308 1309 template <typename ELFT> 1310 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1311 : ObjDumper(Writer), Obj(Obj) { 1312 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1313 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 1314 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1315 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1316 continue; 1317 } 1318 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1319 continue; 1320 LoadSegments.push_back(&Phdr); 1321 } 1322 1323 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1324 switch (Sec.sh_type) { 1325 case ELF::SHT_SYMTAB: 1326 if (DotSymtabSec != nullptr) 1327 reportError("Multiple SHT_SYMTAB"); 1328 DotSymtabSec = &Sec; 1329 break; 1330 case ELF::SHT_DYNSYM: 1331 if (DynSymRegion.Size) 1332 reportError("Multiple SHT_DYNSYM"); 1333 DynSymRegion = createDRIFrom(&Sec); 1334 // This is only used (if Elf_Shdr present)for naming section in GNU style 1335 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1336 DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec)); 1337 break; 1338 case ELF::SHT_SYMTAB_SHNDX: 1339 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1340 break; 1341 case ELF::SHT_GNU_versym: 1342 if (dot_gnu_version_sec != nullptr) 1343 reportError("Multiple SHT_GNU_versym"); 1344 dot_gnu_version_sec = &Sec; 1345 break; 1346 case ELF::SHT_GNU_verdef: 1347 if (dot_gnu_version_d_sec != nullptr) 1348 reportError("Multiple SHT_GNU_verdef"); 1349 dot_gnu_version_d_sec = &Sec; 1350 break; 1351 case ELF::SHT_GNU_verneed: 1352 if (dot_gnu_version_r_sec != nullptr) 1353 reportError("Multiple SHT_GNU_verneed"); 1354 dot_gnu_version_r_sec = &Sec; 1355 break; 1356 } 1357 } 1358 1359 parseDynamicTable(LoadSegments); 1360 1361 if (opts::Output == opts::GNU) 1362 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1363 else 1364 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1365 } 1366 1367 template <typename ELFT> 1368 void ELFDumper<ELFT>::parseDynamicTable( 1369 ArrayRef<const Elf_Phdr *> LoadSegments) { 1370 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1371 const Elf_Phdr *const *I = 1372 std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr, 1373 [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) { 1374 return VAddr < Phdr->p_vaddr; 1375 }); 1376 if (I == LoadSegments.begin()) 1377 report_fatal_error("Virtual address is not in any segment"); 1378 --I; 1379 const Elf_Phdr &Phdr = **I; 1380 uint64_t Delta = VAddr - Phdr.p_vaddr; 1381 if (Delta >= Phdr.p_filesz) 1382 report_fatal_error("Virtual address is not in any segment"); 1383 return Obj->base() + Phdr.p_offset + Delta; 1384 }; 1385 1386 uint64_t SONameOffset = 0; 1387 const char *StringTableBegin = nullptr; 1388 uint64_t StringTableSize = 0; 1389 for (const Elf_Dyn &Dyn : dynamic_table()) { 1390 switch (Dyn.d_tag) { 1391 case ELF::DT_HASH: 1392 HashTable = 1393 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1394 break; 1395 case ELF::DT_GNU_HASH: 1396 GnuHashTable = 1397 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1398 break; 1399 case ELF::DT_STRTAB: 1400 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1401 break; 1402 case ELF::DT_STRSZ: 1403 StringTableSize = Dyn.getVal(); 1404 break; 1405 case ELF::DT_SYMTAB: 1406 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1407 DynSymRegion.EntSize = sizeof(Elf_Sym); 1408 break; 1409 case ELF::DT_RELA: 1410 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1411 break; 1412 case ELF::DT_RELASZ: 1413 DynRelaRegion.Size = Dyn.getVal(); 1414 break; 1415 case ELF::DT_RELAENT: 1416 DynRelaRegion.EntSize = Dyn.getVal(); 1417 break; 1418 case ELF::DT_SONAME: 1419 SONameOffset = Dyn.getVal(); 1420 break; 1421 case ELF::DT_REL: 1422 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1423 break; 1424 case ELF::DT_RELSZ: 1425 DynRelRegion.Size = Dyn.getVal(); 1426 break; 1427 case ELF::DT_RELENT: 1428 DynRelRegion.EntSize = Dyn.getVal(); 1429 break; 1430 case ELF::DT_PLTREL: 1431 if (Dyn.getVal() == DT_REL) 1432 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1433 else if (Dyn.getVal() == DT_RELA) 1434 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1435 else 1436 reportError(Twine("unknown DT_PLTREL value of ") + 1437 Twine((uint64_t)Dyn.getVal())); 1438 break; 1439 case ELF::DT_JMPREL: 1440 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1441 break; 1442 case ELF::DT_PLTRELSZ: 1443 DynPLTRelRegion.Size = Dyn.getVal(); 1444 break; 1445 } 1446 } 1447 if (StringTableBegin) 1448 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1449 if (SONameOffset) 1450 SOName = getDynamicString(SONameOffset); 1451 } 1452 1453 template <typename ELFT> 1454 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1455 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1456 } 1457 1458 template <typename ELFT> 1459 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1460 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1461 } 1462 1463 template<class ELFT> 1464 void ELFDumper<ELFT>::printFileHeaders() { 1465 ELFDumperStyle->printFileHeaders(Obj); 1466 } 1467 1468 template<class ELFT> 1469 void ELFDumper<ELFT>::printSections() { 1470 ELFDumperStyle->printSections(Obj); 1471 } 1472 1473 template<class ELFT> 1474 void ELFDumper<ELFT>::printRelocations() { 1475 ELFDumperStyle->printRelocations(Obj); 1476 } 1477 1478 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1479 ELFDumperStyle->printProgramHeaders(Obj); 1480 } 1481 1482 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1483 ELFDumperStyle->printDynamicRelocations(Obj); 1484 } 1485 1486 template<class ELFT> 1487 void ELFDumper<ELFT>::printSymbols() { 1488 ELFDumperStyle->printSymbols(Obj); 1489 } 1490 1491 template<class ELFT> 1492 void ELFDumper<ELFT>::printDynamicSymbols() { 1493 ELFDumperStyle->printDynamicSymbols(Obj); 1494 } 1495 1496 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1497 ELFDumperStyle->printHashHistogram(Obj); 1498 } 1499 1500 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 1501 ELFDumperStyle->printNotes(Obj); 1502 } 1503 1504 #define LLVM_READOBJ_TYPE_CASE(name) \ 1505 case DT_##name: return #name 1506 1507 static const char *getTypeString(unsigned Arch, uint64_t Type) { 1508 switch (Arch) { 1509 case EM_HEXAGON: 1510 switch (Type) { 1511 LLVM_READOBJ_TYPE_CASE(HEXAGON_SYMSZ); 1512 LLVM_READOBJ_TYPE_CASE(HEXAGON_VER); 1513 LLVM_READOBJ_TYPE_CASE(HEXAGON_PLT); 1514 } 1515 case EM_MIPS: 1516 switch (Type) { 1517 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1518 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1519 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1520 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1521 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1522 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1523 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1524 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1525 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1526 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1527 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1528 } 1529 } 1530 switch (Type) { 1531 LLVM_READOBJ_TYPE_CASE(ANDROID_REL); 1532 LLVM_READOBJ_TYPE_CASE(ANDROID_RELSZ); 1533 LLVM_READOBJ_TYPE_CASE(ANDROID_RELA); 1534 LLVM_READOBJ_TYPE_CASE(ANDROID_RELASZ); 1535 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1536 LLVM_READOBJ_TYPE_CASE(DEBUG); 1537 LLVM_READOBJ_TYPE_CASE(FINI); 1538 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1539 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1540 LLVM_READOBJ_TYPE_CASE(FLAGS); 1541 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1542 LLVM_READOBJ_TYPE_CASE(HASH); 1543 LLVM_READOBJ_TYPE_CASE(INIT); 1544 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1545 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1546 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1547 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1548 LLVM_READOBJ_TYPE_CASE(JMPREL); 1549 LLVM_READOBJ_TYPE_CASE(NEEDED); 1550 LLVM_READOBJ_TYPE_CASE(NULL); 1551 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1552 LLVM_READOBJ_TYPE_CASE(PLTREL); 1553 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1554 LLVM_READOBJ_TYPE_CASE(REL); 1555 LLVM_READOBJ_TYPE_CASE(RELA); 1556 LLVM_READOBJ_TYPE_CASE(RELENT); 1557 LLVM_READOBJ_TYPE_CASE(RELSZ); 1558 LLVM_READOBJ_TYPE_CASE(RELAENT); 1559 LLVM_READOBJ_TYPE_CASE(RELASZ); 1560 LLVM_READOBJ_TYPE_CASE(RPATH); 1561 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1562 LLVM_READOBJ_TYPE_CASE(SONAME); 1563 LLVM_READOBJ_TYPE_CASE(STRSZ); 1564 LLVM_READOBJ_TYPE_CASE(STRTAB); 1565 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1566 LLVM_READOBJ_TYPE_CASE(SYMENT); 1567 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1568 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1569 LLVM_READOBJ_TYPE_CASE(VERDEF); 1570 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1571 LLVM_READOBJ_TYPE_CASE(VERNEED); 1572 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1573 LLVM_READOBJ_TYPE_CASE(VERSYM); 1574 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1575 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1576 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1577 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1578 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1579 LLVM_READOBJ_TYPE_CASE(AUXILIARY); 1580 LLVM_READOBJ_TYPE_CASE(FILTER); 1581 default: return "unknown"; 1582 } 1583 } 1584 1585 #undef LLVM_READOBJ_TYPE_CASE 1586 1587 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1588 { #enum, prefix##_##enum } 1589 1590 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1591 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1592 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1593 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1594 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1595 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1596 }; 1597 1598 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1599 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1600 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1601 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1602 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1603 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1604 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1605 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1606 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1607 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1608 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1609 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1610 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1611 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1612 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1613 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1614 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1615 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1616 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1617 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1618 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1619 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1620 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1621 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1622 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1623 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1624 }; 1625 1626 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1627 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1628 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1629 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1630 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1631 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1632 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1633 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1634 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1635 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1636 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1637 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1638 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1639 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1640 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1641 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1642 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1643 }; 1644 1645 #undef LLVM_READOBJ_DT_FLAG_ENT 1646 1647 template <typename T, typename TFlag> 1648 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1649 using FlagEntry = EnumEntry<TFlag>; 1650 using FlagVector = SmallVector<FlagEntry, 10>; 1651 FlagVector SetFlags; 1652 1653 for (const auto &Flag : Flags) { 1654 if (Flag.Value == 0) 1655 continue; 1656 1657 if ((Value & Flag.Value) == Flag.Value) 1658 SetFlags.push_back(Flag); 1659 } 1660 1661 for (const auto &Flag : SetFlags) { 1662 OS << Flag.Name << " "; 1663 } 1664 } 1665 1666 template <class ELFT> 1667 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1668 if (Value >= DynamicStringTable.size()) 1669 reportError("Invalid dynamic string table reference"); 1670 return StringRef(DynamicStringTable.data() + Value); 1671 } 1672 1673 static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) { 1674 OS << Tag << ": [" << Name << "]"; 1675 } 1676 1677 template <class ELFT> 1678 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1679 raw_ostream &OS = W.getOStream(); 1680 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1681 switch (Type) { 1682 case DT_PLTREL: 1683 if (Value == DT_REL) { 1684 OS << "REL"; 1685 break; 1686 } else if (Value == DT_RELA) { 1687 OS << "RELA"; 1688 break; 1689 } 1690 LLVM_FALLTHROUGH; 1691 case DT_PLTGOT: 1692 case DT_HASH: 1693 case DT_STRTAB: 1694 case DT_SYMTAB: 1695 case DT_RELA: 1696 case DT_INIT: 1697 case DT_FINI: 1698 case DT_REL: 1699 case DT_JMPREL: 1700 case DT_INIT_ARRAY: 1701 case DT_FINI_ARRAY: 1702 case DT_PREINIT_ARRAY: 1703 case DT_DEBUG: 1704 case DT_VERDEF: 1705 case DT_VERNEED: 1706 case DT_VERSYM: 1707 case DT_GNU_HASH: 1708 case DT_NULL: 1709 case DT_MIPS_BASE_ADDRESS: 1710 case DT_MIPS_GOTSYM: 1711 case DT_MIPS_RLD_MAP: 1712 case DT_MIPS_RLD_MAP_REL: 1713 case DT_MIPS_PLTGOT: 1714 case DT_MIPS_OPTIONS: 1715 OS << format(ConvChar, Value); 1716 break; 1717 case DT_RELACOUNT: 1718 case DT_RELCOUNT: 1719 case DT_VERDEFNUM: 1720 case DT_VERNEEDNUM: 1721 case DT_MIPS_RLD_VERSION: 1722 case DT_MIPS_LOCAL_GOTNO: 1723 case DT_MIPS_SYMTABNO: 1724 case DT_MIPS_UNREFEXTNO: 1725 OS << Value; 1726 break; 1727 case DT_PLTRELSZ: 1728 case DT_RELASZ: 1729 case DT_RELAENT: 1730 case DT_STRSZ: 1731 case DT_SYMENT: 1732 case DT_RELSZ: 1733 case DT_RELENT: 1734 case DT_INIT_ARRAYSZ: 1735 case DT_FINI_ARRAYSZ: 1736 case DT_PREINIT_ARRAYSZ: 1737 case DT_ANDROID_RELSZ: 1738 case DT_ANDROID_RELASZ: 1739 OS << Value << " (bytes)"; 1740 break; 1741 case DT_NEEDED: 1742 printLibrary(OS, "Shared library", getDynamicString(Value)); 1743 break; 1744 case DT_SONAME: 1745 printLibrary(OS, "Library soname", getDynamicString(Value)); 1746 break; 1747 case DT_AUXILIARY: 1748 printLibrary(OS, "Auxiliary library", getDynamicString(Value)); 1749 break; 1750 case DT_FILTER: 1751 printLibrary(OS, "Filter library", getDynamicString(Value)); 1752 break; 1753 case DT_RPATH: 1754 case DT_RUNPATH: 1755 OS << getDynamicString(Value); 1756 break; 1757 case DT_MIPS_FLAGS: 1758 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1759 break; 1760 case DT_FLAGS: 1761 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1762 break; 1763 case DT_FLAGS_1: 1764 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1765 break; 1766 default: 1767 OS << format(ConvChar, Value); 1768 break; 1769 } 1770 } 1771 1772 template<class ELFT> 1773 void ELFDumper<ELFT>::printUnwindInfo() { 1774 W.startLine() << "UnwindInfo not implemented.\n"; 1775 } 1776 1777 namespace { 1778 1779 template <> void ELFDumper<ELF32LE>::printUnwindInfo() { 1780 const unsigned Machine = Obj->getHeader()->e_machine; 1781 if (Machine == EM_ARM) { 1782 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, DotSymtabSec); 1783 return Ctx.PrintUnwindInformation(); 1784 } 1785 W.startLine() << "UnwindInfo not implemented.\n"; 1786 } 1787 1788 } // end anonymous namespace 1789 1790 template<class ELFT> 1791 void ELFDumper<ELFT>::printDynamicTable() { 1792 auto I = dynamic_table().begin(); 1793 auto E = dynamic_table().end(); 1794 1795 if (I == E) 1796 return; 1797 1798 --E; 1799 while (I != E && E->getTag() == ELF::DT_NULL) 1800 --E; 1801 if (E->getTag() != ELF::DT_NULL) 1802 ++E; 1803 ++E; 1804 1805 ptrdiff_t Total = std::distance(I, E); 1806 if (Total == 0) 1807 return; 1808 1809 raw_ostream &OS = W.getOStream(); 1810 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1811 1812 bool Is64 = ELFT::Is64Bits; 1813 1814 W.startLine() 1815 << " Tag" << (Is64 ? " " : " ") << "Type" 1816 << " " << "Name/Value\n"; 1817 while (I != E) { 1818 const Elf_Dyn &Entry = *I; 1819 uintX_t Tag = Entry.getTag(); 1820 ++I; 1821 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1822 << format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag)); 1823 printValue(Tag, Entry.getVal()); 1824 OS << "\n"; 1825 } 1826 1827 W.startLine() << "]\n"; 1828 } 1829 1830 template<class ELFT> 1831 void ELFDumper<ELFT>::printNeededLibraries() { 1832 ListScope D(W, "NeededLibraries"); 1833 1834 using LibsTy = std::vector<StringRef>; 1835 LibsTy Libs; 1836 1837 for (const auto &Entry : dynamic_table()) 1838 if (Entry.d_tag == ELF::DT_NEEDED) 1839 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1840 1841 std::stable_sort(Libs.begin(), Libs.end()); 1842 1843 for (const auto &L : Libs) 1844 W.startLine() << L << "\n"; 1845 } 1846 1847 1848 template <typename ELFT> 1849 void ELFDumper<ELFT>::printHashTable() { 1850 DictScope D(W, "HashTable"); 1851 if (!HashTable) 1852 return; 1853 W.printNumber("Num Buckets", HashTable->nbucket); 1854 W.printNumber("Num Chains", HashTable->nchain); 1855 W.printList("Buckets", HashTable->buckets()); 1856 W.printList("Chains", HashTable->chains()); 1857 } 1858 1859 template <typename ELFT> 1860 void ELFDumper<ELFT>::printGnuHashTable() { 1861 DictScope D(W, "GnuHashTable"); 1862 if (!GnuHashTable) 1863 return; 1864 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1865 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1866 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1867 W.printNumber("Shift Count", GnuHashTable->shift2); 1868 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1869 W.printList("Buckets", GnuHashTable->buckets()); 1870 Elf_Sym_Range Syms = dynamic_symbols(); 1871 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1872 if (!NumSyms) 1873 reportError("No dynamic symbol section"); 1874 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1875 } 1876 1877 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1878 W.printString("LoadName", SOName); 1879 } 1880 1881 template <class ELFT> 1882 void ELFDumper<ELFT>::printAttributes() { 1883 W.startLine() << "Attributes not implemented.\n"; 1884 } 1885 1886 namespace { 1887 1888 template <> void ELFDumper<ELF32LE>::printAttributes() { 1889 if (Obj->getHeader()->e_machine != EM_ARM) { 1890 W.startLine() << "Attributes not implemented.\n"; 1891 return; 1892 } 1893 1894 DictScope BA(W, "BuildAttributes"); 1895 for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1896 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1897 continue; 1898 1899 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1900 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1901 errs() << "unrecognised FormatVersion: 0x" 1902 << Twine::utohexstr(Contents[0]) << '\n'; 1903 continue; 1904 } 1905 1906 W.printHex("FormatVersion", Contents[0]); 1907 if (Contents.size() == 1) 1908 continue; 1909 1910 ARMAttributeParser(&W).Parse(Contents, true); 1911 } 1912 } 1913 1914 template <class ELFT> class MipsGOTParser { 1915 public: 1916 TYPEDEF_ELF_TYPES(ELFT) 1917 using Entry = typename ELFO::Elf_Addr; 1918 using Entries = ArrayRef<Entry>; 1919 1920 const bool IsStatic; 1921 const ELFO * const Obj; 1922 1923 MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); 1924 1925 bool hasGot() const { return !GotEntries.empty(); } 1926 bool hasPlt() const { return !PltEntries.empty(); } 1927 1928 uint64_t getGp() const; 1929 1930 const Entry *getGotLazyResolver() const; 1931 const Entry *getGotModulePointer() const; 1932 const Entry *getPltLazyResolver() const; 1933 const Entry *getPltModulePointer() const; 1934 1935 Entries getLocalEntries() const; 1936 Entries getGlobalEntries() const; 1937 Entries getOtherEntries() const; 1938 Entries getPltEntries() const; 1939 1940 uint64_t getGotAddress(const Entry * E) const; 1941 int64_t getGotOffset(const Entry * E) const; 1942 const Elf_Sym *getGotSym(const Entry *E) const; 1943 1944 uint64_t getPltAddress(const Entry * E) const; 1945 const Elf_Sym *getPltSym(const Entry *E) const; 1946 1947 StringRef getPltStrTable() const { return PltStrTable; } 1948 1949 private: 1950 const Elf_Shdr *GotSec; 1951 size_t LocalNum; 1952 size_t GlobalNum; 1953 1954 const Elf_Shdr *PltSec; 1955 const Elf_Shdr *PltRelSec; 1956 const Elf_Shdr *PltSymTable; 1957 Elf_Sym_Range GotDynSyms; 1958 StringRef PltStrTable; 1959 1960 Entries GotEntries; 1961 Entries PltEntries; 1962 }; 1963 1964 } // end anonymous namespace 1965 1966 template <class ELFT> 1967 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, 1968 Elf_Sym_Range DynSyms) 1969 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0), 1970 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr) { 1971 // See "Global Offset Table" in Chapter 5 in the following document 1972 // for detailed GOT description. 1973 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1974 1975 // Find static GOT secton. 1976 if (IsStatic) { 1977 GotSec = findSectionByName(*Obj, ".got"); 1978 if (!GotSec) 1979 reportError("Cannot find .got section"); 1980 1981 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 1982 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 1983 Content.size() / sizeof(Entry)); 1984 LocalNum = GotEntries.size(); 1985 return; 1986 } 1987 1988 // Lookup dynamic table tags which define GOT/PLT layouts. 1989 Optional<uint64_t> DtPltGot; 1990 Optional<uint64_t> DtLocalGotNum; 1991 Optional<uint64_t> DtGotSym; 1992 Optional<uint64_t> DtMipsPltGot; 1993 Optional<uint64_t> DtJmpRel; 1994 for (const auto &Entry : DynTable) { 1995 switch (Entry.getTag()) { 1996 case ELF::DT_PLTGOT: 1997 DtPltGot = Entry.getVal(); 1998 break; 1999 case ELF::DT_MIPS_LOCAL_GOTNO: 2000 DtLocalGotNum = Entry.getVal(); 2001 break; 2002 case ELF::DT_MIPS_GOTSYM: 2003 DtGotSym = Entry.getVal(); 2004 break; 2005 case ELF::DT_MIPS_PLTGOT: 2006 DtMipsPltGot = Entry.getVal(); 2007 break; 2008 case ELF::DT_JMPREL: 2009 DtJmpRel = Entry.getVal(); 2010 break; 2011 } 2012 } 2013 2014 // Find dynamic GOT section. 2015 if (DtPltGot || DtLocalGotNum || DtGotSym) { 2016 if (!DtPltGot) 2017 report_fatal_error("Cannot find PLTGOT dynamic table tag."); 2018 if (!DtLocalGotNum) 2019 report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag."); 2020 if (!DtGotSym) 2021 report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag."); 2022 2023 size_t DynSymTotal = DynSyms.size(); 2024 if (*DtGotSym > DynSymTotal) 2025 reportError("MIPS_GOTSYM exceeds a number of dynamic symbols"); 2026 2027 GotSec = findNotEmptySectionByAddress(Obj, *DtPltGot); 2028 if (!GotSec) 2029 reportError("There is no not empty GOT section at 0x" + 2030 Twine::utohexstr(*DtPltGot)); 2031 2032 LocalNum = *DtLocalGotNum; 2033 GlobalNum = DynSymTotal - *DtGotSym; 2034 2035 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 2036 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2037 Content.size() / sizeof(Entry)); 2038 GotDynSyms = DynSyms.drop_front(*DtGotSym); 2039 } 2040 2041 // Find PLT section. 2042 if (DtMipsPltGot || DtJmpRel) { 2043 if (!DtMipsPltGot) 2044 report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag."); 2045 if (!DtJmpRel) 2046 report_fatal_error("Cannot find JMPREL dynamic table tag."); 2047 2048 PltSec = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2049 if (!PltSec) 2050 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2051 Twine::utohexstr(*DtMipsPltGot)); 2052 2053 PltRelSec = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2054 if (!PltRelSec) 2055 report_fatal_error("There is no not empty RELPLT section at 0x" + 2056 Twine::utohexstr(*DtJmpRel)); 2057 2058 ArrayRef<uint8_t> PltContent = 2059 unwrapOrError(Obj->getSectionContents(PltSec)); 2060 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()), 2061 PltContent.size() / sizeof(Entry)); 2062 2063 PltSymTable = unwrapOrError(Obj->getSection(PltRelSec->sh_link)); 2064 PltStrTable = unwrapOrError(Obj->getStringTableForSymtab(*PltSymTable)); 2065 } 2066 } 2067 2068 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 2069 return GotSec->sh_addr + 0x7ff0; 2070 } 2071 2072 template <class ELFT> 2073 const typename MipsGOTParser<ELFT>::Entry * 2074 MipsGOTParser<ELFT>::getGotLazyResolver() const { 2075 return LocalNum > 0 ? &GotEntries[0] : nullptr; 2076 } 2077 2078 template <class ELFT> 2079 const typename MipsGOTParser<ELFT>::Entry * 2080 MipsGOTParser<ELFT>::getGotModulePointer() const { 2081 if (LocalNum < 2) 2082 return nullptr; 2083 const Entry &E = GotEntries[1]; 2084 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 2085 return nullptr; 2086 return &E; 2087 } 2088 2089 template <class ELFT> 2090 typename MipsGOTParser<ELFT>::Entries 2091 MipsGOTParser<ELFT>::getLocalEntries() const { 2092 size_t Skip = getGotModulePointer() ? 2 : 1; 2093 if (LocalNum - Skip <= 0) 2094 return Entries(); 2095 return GotEntries.slice(Skip, LocalNum - Skip); 2096 } 2097 2098 template <class ELFT> 2099 typename MipsGOTParser<ELFT>::Entries 2100 MipsGOTParser<ELFT>::getGlobalEntries() const { 2101 if (GlobalNum == 0) 2102 return Entries(); 2103 return GotEntries.slice(LocalNum, GlobalNum); 2104 } 2105 2106 template <class ELFT> 2107 typename MipsGOTParser<ELFT>::Entries 2108 MipsGOTParser<ELFT>::getOtherEntries() const { 2109 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 2110 if (OtherNum == 0) 2111 return Entries(); 2112 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 2113 } 2114 2115 template <class ELFT> 2116 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 2117 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2118 return GotSec->sh_addr + Offset; 2119 } 2120 2121 template <class ELFT> 2122 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 2123 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2124 return Offset - 0x7ff0; 2125 } 2126 2127 template <class ELFT> 2128 const typename MipsGOTParser<ELFT>::Elf_Sym * 2129 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 2130 int64_t Offset = std::distance(GotEntries.data(), E); 2131 return &GotDynSyms[Offset - LocalNum]; 2132 } 2133 2134 template <class ELFT> 2135 const typename MipsGOTParser<ELFT>::Entry * 2136 MipsGOTParser<ELFT>::getPltLazyResolver() const { 2137 return PltEntries.empty() ? nullptr : &PltEntries[0]; 2138 } 2139 2140 template <class ELFT> 2141 const typename MipsGOTParser<ELFT>::Entry * 2142 MipsGOTParser<ELFT>::getPltModulePointer() const { 2143 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 2144 } 2145 2146 template <class ELFT> 2147 typename MipsGOTParser<ELFT>::Entries 2148 MipsGOTParser<ELFT>::getPltEntries() const { 2149 if (PltEntries.size() <= 2) 2150 return Entries(); 2151 return PltEntries.slice(2, PltEntries.size() - 2); 2152 } 2153 2154 template <class ELFT> 2155 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 2156 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 2157 return PltSec->sh_addr + Offset; 2158 } 2159 2160 template <class ELFT> 2161 const typename MipsGOTParser<ELFT>::Elf_Sym * 2162 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 2163 int64_t Offset = std::distance(getPltEntries().data(), E); 2164 if (PltRelSec->sh_type == ELF::SHT_REL) { 2165 Elf_Rel_Range Rels = unwrapOrError(Obj->rels(PltRelSec)); 2166 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2167 } else { 2168 Elf_Rela_Range Rels = unwrapOrError(Obj->relas(PltRelSec)); 2169 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2170 } 2171 } 2172 2173 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2174 if (Obj->getHeader()->e_machine != EM_MIPS) 2175 reportError("MIPS PLT GOT is available for MIPS targets only"); 2176 2177 MipsGOTParser<ELFT> Parser(Obj, dynamic_table(), dynamic_symbols()); 2178 if (Parser.hasGot()) 2179 ELFDumperStyle->printMipsGOT(Parser); 2180 if (Parser.hasPlt()) 2181 ELFDumperStyle->printMipsPLT(Parser); 2182 } 2183 2184 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2185 {"None", Mips::AFL_EXT_NONE}, 2186 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2187 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2188 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2189 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2190 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2191 {"LSI R4010", Mips::AFL_EXT_4010}, 2192 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2193 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2194 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2195 {"MIPS R4650", Mips::AFL_EXT_4650}, 2196 {"MIPS R5900", Mips::AFL_EXT_5900}, 2197 {"MIPS R10000", Mips::AFL_EXT_10000}, 2198 {"NEC VR4100", Mips::AFL_EXT_4100}, 2199 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2200 {"NEC VR4120", Mips::AFL_EXT_4120}, 2201 {"NEC VR5400", Mips::AFL_EXT_5400}, 2202 {"NEC VR5500", Mips::AFL_EXT_5500}, 2203 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2204 {"Toshiba R3900", Mips::AFL_EXT_3900} 2205 }; 2206 2207 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2208 {"DSP", Mips::AFL_ASE_DSP}, 2209 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2210 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2211 {"MCU", Mips::AFL_ASE_MCU}, 2212 {"MDMX", Mips::AFL_ASE_MDMX}, 2213 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2214 {"MT", Mips::AFL_ASE_MT}, 2215 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2216 {"VZ", Mips::AFL_ASE_VIRT}, 2217 {"MSA", Mips::AFL_ASE_MSA}, 2218 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2219 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2220 {"XPA", Mips::AFL_ASE_XPA} 2221 }; 2222 2223 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2224 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2225 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2226 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2227 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2228 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2229 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2230 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2231 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2232 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2233 Mips::Val_GNU_MIPS_ABI_FP_64A} 2234 }; 2235 2236 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2237 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2238 }; 2239 2240 static int getMipsRegisterSize(uint8_t Flag) { 2241 switch (Flag) { 2242 case Mips::AFL_REG_NONE: 2243 return 0; 2244 case Mips::AFL_REG_32: 2245 return 32; 2246 case Mips::AFL_REG_64: 2247 return 64; 2248 case Mips::AFL_REG_128: 2249 return 128; 2250 default: 2251 return -1; 2252 } 2253 } 2254 2255 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2256 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2257 if (!Shdr) { 2258 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2259 return; 2260 } 2261 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2262 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2263 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2264 return; 2265 } 2266 2267 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2268 2269 raw_ostream &OS = W.getOStream(); 2270 DictScope GS(W, "MIPS ABI Flags"); 2271 2272 W.printNumber("Version", Flags->version); 2273 W.startLine() << "ISA: "; 2274 if (Flags->isa_rev <= 1) 2275 OS << format("MIPS%u", Flags->isa_level); 2276 else 2277 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2278 OS << "\n"; 2279 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2280 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2281 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2282 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2283 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2284 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2285 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2286 W.printHex("Flags 2", Flags->flags2); 2287 } 2288 2289 template <class ELFT> 2290 static void printMipsReginfoData(ScopedPrinter &W, 2291 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2292 W.printHex("GP", Reginfo.ri_gp_value); 2293 W.printHex("General Mask", Reginfo.ri_gprmask); 2294 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2295 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2296 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2297 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2298 } 2299 2300 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2301 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2302 if (!Shdr) { 2303 W.startLine() << "There is no .reginfo section in the file.\n"; 2304 return; 2305 } 2306 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2307 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2308 W.startLine() << "The .reginfo section has a wrong size.\n"; 2309 return; 2310 } 2311 2312 DictScope GS(W, "MIPS RegInfo"); 2313 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2314 printMipsReginfoData(W, *Reginfo); 2315 } 2316 2317 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2318 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2319 if (!Shdr) { 2320 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2321 return; 2322 } 2323 2324 DictScope GS(W, "MIPS Options"); 2325 2326 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2327 while (!Sec.empty()) { 2328 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2329 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2330 return; 2331 } 2332 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2333 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2334 switch (O->kind) { 2335 case ODK_REGINFO: 2336 printMipsReginfoData(W, O->getRegInfo()); 2337 break; 2338 default: 2339 W.startLine() << "Unsupported MIPS options tag.\n"; 2340 break; 2341 } 2342 Sec = Sec.slice(O->size); 2343 } 2344 } 2345 2346 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2347 const Elf_Shdr *StackMapSection = nullptr; 2348 for (const auto &Sec : unwrapOrError(Obj->sections())) { 2349 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2350 if (Name == ".llvm_stackmaps") { 2351 StackMapSection = &Sec; 2352 break; 2353 } 2354 } 2355 2356 if (!StackMapSection) 2357 return; 2358 2359 ArrayRef<uint8_t> StackMapContentsArray = 2360 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2361 2362 prettyPrintStackMap( 2363 W, StackMapV2Parser<ELFT::TargetEndianness>(StackMapContentsArray)); 2364 } 2365 2366 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2367 ELFDumperStyle->printGroupSections(Obj); 2368 } 2369 2370 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2371 StringRef Str2) { 2372 OS.PadToColumn(2u); 2373 OS << Str1; 2374 OS.PadToColumn(37u); 2375 OS << Str2 << "\n"; 2376 OS.flush(); 2377 } 2378 2379 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2380 const Elf_Ehdr *e = Obj->getHeader(); 2381 OS << "ELF Header:\n"; 2382 OS << " Magic: "; 2383 std::string Str; 2384 for (int i = 0; i < ELF::EI_NIDENT; i++) 2385 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2386 OS << "\n"; 2387 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2388 printFields(OS, "Class:", Str); 2389 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2390 printFields(OS, "Data:", Str); 2391 OS.PadToColumn(2u); 2392 OS << "Version:"; 2393 OS.PadToColumn(37u); 2394 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2395 if (e->e_version == ELF::EV_CURRENT) 2396 OS << " (current)"; 2397 OS << "\n"; 2398 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2399 printFields(OS, "OS/ABI:", Str); 2400 Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2401 printFields(OS, "ABI Version:", Str); 2402 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2403 printFields(OS, "Type:", Str); 2404 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2405 printFields(OS, "Machine:", Str); 2406 Str = "0x" + to_hexString(e->e_version); 2407 printFields(OS, "Version:", Str); 2408 Str = "0x" + to_hexString(e->e_entry); 2409 printFields(OS, "Entry point address:", Str); 2410 Str = to_string(e->e_phoff) + " (bytes into file)"; 2411 printFields(OS, "Start of program headers:", Str); 2412 Str = to_string(e->e_shoff) + " (bytes into file)"; 2413 printFields(OS, "Start of section headers:", Str); 2414 Str = "0x" + to_hexString(e->e_flags); 2415 printFields(OS, "Flags:", Str); 2416 Str = to_string(e->e_ehsize) + " (bytes)"; 2417 printFields(OS, "Size of this header:", Str); 2418 Str = to_string(e->e_phentsize) + " (bytes)"; 2419 printFields(OS, "Size of program headers:", Str); 2420 Str = to_string(e->e_phnum); 2421 printFields(OS, "Number of program headers:", Str); 2422 Str = to_string(e->e_shentsize) + " (bytes)"; 2423 printFields(OS, "Size of section headers:", Str); 2424 Str = to_string(e->e_shnum); 2425 printFields(OS, "Number of section headers:", Str); 2426 Str = to_string(e->e_shstrndx); 2427 printFields(OS, "Section header string table index:", Str); 2428 } 2429 2430 namespace { 2431 struct GroupMember { 2432 StringRef Name; 2433 uint64_t Index; 2434 }; 2435 2436 struct GroupSection { 2437 StringRef Name; 2438 StringRef Signature; 2439 uint64_t ShName; 2440 uint64_t Index; 2441 uint32_t Type; 2442 std::vector<GroupMember> Members; 2443 }; 2444 2445 template <class ELFT> 2446 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) { 2447 using Elf_Shdr = typename ELFT::Shdr; 2448 using Elf_Sym = typename ELFT::Sym; 2449 using Elf_Word = typename ELFT::Word; 2450 2451 std::vector<GroupSection> Ret; 2452 uint64_t I = 0; 2453 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2454 ++I; 2455 if (Sec.sh_type != ELF::SHT_GROUP) 2456 continue; 2457 2458 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2459 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2460 const Elf_Sym *Sym = 2461 unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 2462 auto Data = 2463 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2464 2465 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2466 StringRef Signature = StrTable.data() + Sym->st_name; 2467 Ret.push_back({Name, Signature, Sec.sh_name, I - 1, Data[0], {}}); 2468 2469 std::vector<GroupMember> &GM = Ret.back().Members; 2470 for (uint32_t Ndx : Data.slice(1)) { 2471 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2472 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2473 GM.push_back({Name, Ndx}); 2474 } 2475 } 2476 return Ret; 2477 } 2478 2479 DenseMap<uint64_t, const GroupSection *> 2480 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 2481 DenseMap<uint64_t, const GroupSection *> Ret; 2482 for (const GroupSection &G : Groups) 2483 for (const GroupMember &GM : G.Members) 2484 Ret.insert({GM.Index, &G}); 2485 return Ret; 2486 } 2487 2488 } // namespace 2489 2490 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2491 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 2492 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 2493 for (const GroupSection &G : V) { 2494 OS << "\n" 2495 << getGroupType(G.Type) << " group section [" 2496 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 2497 << "] contains " << G.Members.size() << " sections:\n" 2498 << " [Index] Name\n"; 2499 for (const GroupMember &GM : G.Members) { 2500 const GroupSection *MainGroup = Map[GM.Index]; 2501 if (MainGroup != &G) { 2502 OS.flush(); 2503 errs() << "Error: section [" << format_decimal(GM.Index, 5) 2504 << "] in group section [" << format_decimal(G.Index, 5) 2505 << "] already in group section [" 2506 << format_decimal(MainGroup->Index, 5) << "]"; 2507 errs().flush(); 2508 continue; 2509 } 2510 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 2511 } 2512 } 2513 2514 if (V.empty()) 2515 OS << "There are no section groups in this file.\n"; 2516 } 2517 2518 template <class ELFT> 2519 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2520 const Elf_Rela &R, bool IsRela) { 2521 std::string Offset, Info, Addend, Value; 2522 SmallString<32> RelocName; 2523 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2524 StringRef TargetName; 2525 const Elf_Sym *Sym = nullptr; 2526 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2527 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2528 2529 // First two fields are bit width dependent. The rest of them are after are 2530 // fixed width. 2531 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2532 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2533 Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab)); 2534 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2535 const Elf_Shdr *Sec = unwrapOrError( 2536 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2537 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2538 } else if (Sym) { 2539 TargetName = unwrapOrError(Sym->getName(StrTable)); 2540 } 2541 2542 if (Sym && IsRela) { 2543 if (R.r_addend < 0) 2544 Addend = " - "; 2545 else 2546 Addend = " + "; 2547 } 2548 2549 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2550 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2551 2552 int64_t RelAddend = R.r_addend; 2553 if (IsRela) 2554 Addend += to_hexString(std::abs(RelAddend), false); 2555 2556 if (Sym) 2557 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2558 2559 Fields[0].Str = Offset; 2560 Fields[1].Str = Info; 2561 Fields[2].Str = RelocName; 2562 Fields[3].Str = Value; 2563 Fields[4].Str = TargetName; 2564 for (auto &field : Fields) 2565 printField(field); 2566 OS << Addend; 2567 OS << "\n"; 2568 } 2569 2570 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2571 if (Is64) 2572 OS << " Offset Info Type" 2573 << " Symbol's Value Symbol's Name"; 2574 else 2575 OS << " Offset Info Type Sym. Value " 2576 << "Symbol's Name"; 2577 if (IsRela) 2578 OS << (IsRela ? " + Addend" : ""); 2579 OS << "\n"; 2580 } 2581 2582 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2583 bool HasRelocSections = false; 2584 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2585 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 2586 Sec.sh_type != ELF::SHT_ANDROID_REL && 2587 Sec.sh_type != ELF::SHT_ANDROID_RELA) 2588 continue; 2589 HasRelocSections = true; 2590 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2591 unsigned Entries = Sec.getEntityCount(); 2592 uintX_t Offset = Sec.sh_offset; 2593 OS << "\nRelocation section '" << Name << "' at offset 0x" 2594 << to_hexString(Offset, false) << " contains " << Entries 2595 << " entries:\n"; 2596 printRelocHeader(OS, ELFT::Is64Bits, 2597 Sec.sh_type == ELF::SHT_RELA || 2598 Sec.sh_type == ELF::SHT_ANDROID_RELA); 2599 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2600 switch (Sec.sh_type) { 2601 case ELF::SHT_REL: 2602 for (const auto &R : unwrapOrError(Obj->rels(&Sec))) { 2603 Elf_Rela Rela; 2604 Rela.r_offset = R.r_offset; 2605 Rela.r_info = R.r_info; 2606 Rela.r_addend = 0; 2607 printRelocation(Obj, SymTab, Rela, false); 2608 } 2609 break; 2610 case ELF::SHT_RELA: 2611 for (const auto &R : unwrapOrError(Obj->relas(&Sec))) 2612 printRelocation(Obj, SymTab, R, true); 2613 break; 2614 case ELF::SHT_ANDROID_REL: 2615 case ELF::SHT_ANDROID_RELA: 2616 for (const auto &R : unwrapOrError(Obj->android_relas(&Sec))) 2617 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA); 2618 break; 2619 } 2620 } 2621 if (!HasRelocSections) 2622 OS << "\nThere are no relocations in this file.\n"; 2623 } 2624 2625 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2626 using namespace ELF; 2627 2628 switch (Arch) { 2629 case EM_ARM: 2630 switch (Type) { 2631 case SHT_ARM_EXIDX: 2632 return "ARM_EXIDX"; 2633 case SHT_ARM_PREEMPTMAP: 2634 return "ARM_PREEMPTMAP"; 2635 case SHT_ARM_ATTRIBUTES: 2636 return "ARM_ATTRIBUTES"; 2637 case SHT_ARM_DEBUGOVERLAY: 2638 return "ARM_DEBUGOVERLAY"; 2639 case SHT_ARM_OVERLAYSECTION: 2640 return "ARM_OVERLAYSECTION"; 2641 } 2642 case EM_X86_64: 2643 switch (Type) { 2644 case SHT_X86_64_UNWIND: 2645 return "X86_64_UNWIND"; 2646 } 2647 case EM_MIPS: 2648 case EM_MIPS_RS3_LE: 2649 switch (Type) { 2650 case SHT_MIPS_REGINFO: 2651 return "MIPS_REGINFO"; 2652 case SHT_MIPS_OPTIONS: 2653 return "MIPS_OPTIONS"; 2654 case SHT_MIPS_ABIFLAGS: 2655 return "MIPS_ABIFLAGS"; 2656 case SHT_MIPS_DWARF: 2657 return "SHT_MIPS_DWARF"; 2658 } 2659 } 2660 switch (Type) { 2661 case SHT_NULL: 2662 return "NULL"; 2663 case SHT_PROGBITS: 2664 return "PROGBITS"; 2665 case SHT_SYMTAB: 2666 return "SYMTAB"; 2667 case SHT_STRTAB: 2668 return "STRTAB"; 2669 case SHT_RELA: 2670 return "RELA"; 2671 case SHT_HASH: 2672 return "HASH"; 2673 case SHT_DYNAMIC: 2674 return "DYNAMIC"; 2675 case SHT_NOTE: 2676 return "NOTE"; 2677 case SHT_NOBITS: 2678 return "NOBITS"; 2679 case SHT_REL: 2680 return "REL"; 2681 case SHT_SHLIB: 2682 return "SHLIB"; 2683 case SHT_DYNSYM: 2684 return "DYNSYM"; 2685 case SHT_INIT_ARRAY: 2686 return "INIT_ARRAY"; 2687 case SHT_FINI_ARRAY: 2688 return "FINI_ARRAY"; 2689 case SHT_PREINIT_ARRAY: 2690 return "PREINIT_ARRAY"; 2691 case SHT_GROUP: 2692 return "GROUP"; 2693 case SHT_SYMTAB_SHNDX: 2694 return "SYMTAB SECTION INDICES"; 2695 case SHT_LLVM_ODRTAB: 2696 return "LLVM_ODRTAB"; 2697 // FIXME: Parse processor specific GNU attributes 2698 case SHT_GNU_ATTRIBUTES: 2699 return "ATTRIBUTES"; 2700 case SHT_GNU_HASH: 2701 return "GNU_HASH"; 2702 case SHT_GNU_verdef: 2703 return "VERDEF"; 2704 case SHT_GNU_verneed: 2705 return "VERNEED"; 2706 case SHT_GNU_versym: 2707 return "VERSYM"; 2708 default: 2709 return ""; 2710 } 2711 return ""; 2712 } 2713 2714 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2715 size_t SectionIndex = 0; 2716 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2717 Alignment; 2718 unsigned Bias; 2719 unsigned Width; 2720 2721 if (ELFT::Is64Bits) { 2722 Bias = 0; 2723 Width = 16; 2724 } else { 2725 Bias = 8; 2726 Width = 8; 2727 } 2728 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2729 << " section headers, starting at offset " 2730 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2731 OS << "Section Headers:\n"; 2732 Field Fields[11] = {{"[Nr]", 2}, 2733 {"Name", 7}, 2734 {"Type", 25}, 2735 {"Address", 41}, 2736 {"Off", 58 - Bias}, 2737 {"Size", 65 - Bias}, 2738 {"ES", 72 - Bias}, 2739 {"Flg", 75 - Bias}, 2740 {"Lk", 79 - Bias}, 2741 {"Inf", 82 - Bias}, 2742 {"Al", 86 - Bias}}; 2743 for (auto &f : Fields) 2744 printField(f); 2745 OS << "\n"; 2746 2747 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2748 Number = to_string(SectionIndex); 2749 Fields[0].Str = Number; 2750 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2751 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2752 Fields[2].Str = Type; 2753 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2754 Fields[3].Str = Address; 2755 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2756 Fields[4].Str = Offset; 2757 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2758 Fields[5].Str = Size; 2759 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2760 Fields[6].Str = EntrySize; 2761 Flags = getGNUFlags(Sec.sh_flags); 2762 Fields[7].Str = Flags; 2763 Link = to_string(Sec.sh_link); 2764 Fields[8].Str = Link; 2765 Info = to_string(Sec.sh_info); 2766 Fields[9].Str = Info; 2767 Alignment = to_string(Sec.sh_addralign); 2768 Fields[10].Str = Alignment; 2769 OS.PadToColumn(Fields[0].Column); 2770 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2771 for (int i = 1; i < 7; i++) 2772 printField(Fields[i]); 2773 OS.PadToColumn(Fields[7].Column); 2774 OS << right_justify(Fields[7].Str, 3); 2775 OS.PadToColumn(Fields[8].Column); 2776 OS << right_justify(Fields[8].Str, 2); 2777 OS.PadToColumn(Fields[9].Column); 2778 OS << right_justify(Fields[9].Str, 3); 2779 OS.PadToColumn(Fields[10].Column); 2780 OS << right_justify(Fields[10].Str, 2); 2781 OS << "\n"; 2782 ++SectionIndex; 2783 } 2784 OS << "Key to Flags:\n" 2785 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2786 "(large)\n" 2787 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2788 x (unknown)\n" 2789 << " O (extra OS processing required) o (OS specific),\ 2790 p (processor specific)\n"; 2791 } 2792 2793 template <class ELFT> 2794 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2795 size_t Entries) { 2796 if (!Name.empty()) 2797 OS << "\nSymbol table '" << Name << "' contains " << Entries 2798 << " entries:\n"; 2799 else 2800 OS << "\n Symbol table for image:\n"; 2801 2802 if (ELFT::Is64Bits) 2803 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2804 else 2805 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2806 } 2807 2808 template <class ELFT> 2809 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2810 const Elf_Sym *Symbol, 2811 const Elf_Sym *FirstSym) { 2812 unsigned SectionIndex = Symbol->st_shndx; 2813 switch (SectionIndex) { 2814 case ELF::SHN_UNDEF: 2815 return "UND"; 2816 case ELF::SHN_ABS: 2817 return "ABS"; 2818 case ELF::SHN_COMMON: 2819 return "COM"; 2820 case ELF::SHN_XINDEX: 2821 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 2822 Symbol, FirstSym, this->dumper()->getShndxTable())); 2823 LLVM_FALLTHROUGH; 2824 default: 2825 // Find if: 2826 // Processor specific 2827 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2828 return std::string("PRC[0x") + 2829 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2830 // OS specific 2831 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2832 return std::string("OS[0x") + 2833 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2834 // Architecture reserved: 2835 if (SectionIndex >= ELF::SHN_LORESERVE && 2836 SectionIndex <= ELF::SHN_HIRESERVE) 2837 return std::string("RSV[0x") + 2838 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2839 // A normal section with an index 2840 return to_string(format_decimal(SectionIndex, 3)); 2841 } 2842 } 2843 2844 template <class ELFT> 2845 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2846 const Elf_Sym *FirstSym, StringRef StrTable, 2847 bool IsDynamic) { 2848 static int Idx = 0; 2849 static bool Dynamic = true; 2850 size_t Width; 2851 2852 // If this function was called with a different value from IsDynamic 2853 // from last call, happens when we move from dynamic to static symbol 2854 // table, "Num" field should be reset. 2855 if (!Dynamic != !IsDynamic) { 2856 Idx = 0; 2857 Dynamic = false; 2858 } 2859 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2860 unsigned Bias = 0; 2861 if (ELFT::Is64Bits) { 2862 Bias = 8; 2863 Width = 16; 2864 } else { 2865 Bias = 0; 2866 Width = 8; 2867 } 2868 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2869 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2870 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2871 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2872 Size = to_string(format_decimal(Symbol->st_size, 5)); 2873 unsigned char SymbolType = Symbol->getType(); 2874 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2875 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2876 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2877 else 2878 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2879 unsigned Vis = Symbol->getVisibility(); 2880 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2881 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2882 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2883 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2884 Fields[0].Str = Num; 2885 Fields[1].Str = Value; 2886 Fields[2].Str = Size; 2887 Fields[3].Str = Type; 2888 Fields[4].Str = Binding; 2889 Fields[5].Str = Visibility; 2890 Fields[6].Str = Section; 2891 Fields[7].Str = Name; 2892 for (auto &Entry : Fields) 2893 printField(Entry); 2894 OS << "\n"; 2895 } 2896 template <class ELFT> 2897 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 2898 uint32_t Sym, StringRef StrTable, 2899 uint32_t Bucket) { 2900 std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section; 2901 unsigned Width, Bias = 0; 2902 if (ELFT::Is64Bits) { 2903 Bias = 8; 2904 Width = 16; 2905 } else { 2906 Bias = 0; 2907 Width = 8; 2908 } 2909 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 2910 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 2911 Num = to_string(format_decimal(Sym, 5)); 2912 Buc = to_string(format_decimal(Bucket, 3)) + ":"; 2913 2914 const auto Symbol = FirstSym + Sym; 2915 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2916 Size = to_string(format_decimal(Symbol->st_size, 5)); 2917 unsigned char SymbolType = Symbol->getType(); 2918 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2919 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2920 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2921 else 2922 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2923 unsigned Vis = Symbol->getVisibility(); 2924 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2925 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2926 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2927 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 2928 Fields[0].Str = Num; 2929 Fields[1].Str = Buc; 2930 Fields[2].Str = Value; 2931 Fields[3].Str = Size; 2932 Fields[4].Str = Type; 2933 Fields[5].Str = Binding; 2934 Fields[6].Str = Visibility; 2935 Fields[7].Str = Section; 2936 Fields[8].Str = Name; 2937 for (auto &Entry : Fields) 2938 printField(Entry); 2939 OS << "\n"; 2940 } 2941 2942 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2943 if (opts::DynamicSymbols) 2944 return; 2945 this->dumper()->printSymbolsHelper(true); 2946 this->dumper()->printSymbolsHelper(false); 2947 } 2948 2949 template <class ELFT> 2950 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2951 if (this->dumper()->getDynamicStringTable().empty()) 2952 return; 2953 auto StringTable = this->dumper()->getDynamicStringTable(); 2954 auto DynSyms = this->dumper()->dynamic_symbols(); 2955 auto GnuHash = this->dumper()->getGnuHashTable(); 2956 auto SysVHash = this->dumper()->getHashTable(); 2957 2958 // If no hash or .gnu.hash found, try using symbol table 2959 if (GnuHash == nullptr && SysVHash == nullptr) 2960 this->dumper()->printSymbolsHelper(true); 2961 2962 // Try printing .hash 2963 if (this->dumper()->getHashTable()) { 2964 OS << "\n Symbol table of .hash for image:\n"; 2965 if (ELFT::Is64Bits) 2966 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2967 else 2968 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2969 OS << "\n"; 2970 2971 uint32_t NBuckets = SysVHash->nbucket; 2972 uint32_t NChains = SysVHash->nchain; 2973 auto Buckets = SysVHash->buckets(); 2974 auto Chains = SysVHash->chains(); 2975 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 2976 if (Buckets[Buc] == ELF::STN_UNDEF) 2977 continue; 2978 for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) { 2979 if (Ch == ELF::STN_UNDEF) 2980 break; 2981 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc); 2982 } 2983 } 2984 } 2985 2986 // Try printing .gnu.hash 2987 if (GnuHash) { 2988 OS << "\n Symbol table of .gnu.hash for image:\n"; 2989 if (ELFT::Is64Bits) 2990 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2991 else 2992 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2993 OS << "\n"; 2994 uint32_t NBuckets = GnuHash->nbuckets; 2995 auto Buckets = GnuHash->buckets(); 2996 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 2997 if (Buckets[Buc] == ELF::STN_UNDEF) 2998 continue; 2999 uint32_t Index = Buckets[Buc]; 3000 uint32_t GnuHashable = Index - GnuHash->symndx; 3001 // Print whole chain 3002 while (true) { 3003 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc); 3004 // Chain ends at symbol with stopper bit 3005 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1) 3006 break; 3007 } 3008 } 3009 } 3010 } 3011 3012 static inline std::string printPhdrFlags(unsigned Flag) { 3013 std::string Str; 3014 Str = (Flag & PF_R) ? "R" : " "; 3015 Str += (Flag & PF_W) ? "W" : " "; 3016 Str += (Flag & PF_X) ? "E" : " "; 3017 return Str; 3018 } 3019 3020 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 3021 // PT_TLS must only have SHF_TLS sections 3022 template <class ELFT> 3023 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 3024 const Elf_Shdr &Sec) { 3025 return (((Sec.sh_flags & ELF::SHF_TLS) && 3026 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 3027 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 3028 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 3029 } 3030 3031 // Non-SHT_NOBITS must have its offset inside the segment 3032 // Only non-zero section can be at end of segment 3033 template <class ELFT> 3034 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3035 if (Sec.sh_type == ELF::SHT_NOBITS) 3036 return true; 3037 bool IsSpecial = 3038 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3039 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3040 auto SectionSize = 3041 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3042 if (Sec.sh_offset >= Phdr.p_offset) 3043 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 3044 /*only non-zero sized sections at end*/ && 3045 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 3046 return false; 3047 } 3048 3049 // SHF_ALLOC must have VMA inside segment 3050 // Only non-zero section can be at end of segment 3051 template <class ELFT> 3052 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3053 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 3054 return true; 3055 bool IsSpecial = 3056 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3057 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3058 auto SectionSize = 3059 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3060 if (Sec.sh_addr >= Phdr.p_vaddr) 3061 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 3062 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 3063 return false; 3064 } 3065 3066 // No section with zero size must be at start or end of PT_DYNAMIC 3067 template <class ELFT> 3068 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3069 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 3070 return true; 3071 // Is section within the phdr both based on offset and VMA ? 3072 return ((Sec.sh_type == ELF::SHT_NOBITS) || 3073 (Sec.sh_offset > Phdr.p_offset && 3074 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 3075 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 3076 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 3077 } 3078 3079 template <class ELFT> 3080 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3081 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3082 unsigned Width = ELFT::Is64Bits ? 18 : 10; 3083 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 3084 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 3085 3086 const Elf_Ehdr *Header = Obj->getHeader(); 3087 Field Fields[8] = {2, 17, 26, 37 + Bias, 3088 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 3089 OS << "\nElf file type is " 3090 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 3091 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 3092 << "There are " << Header->e_phnum << " program headers," 3093 << " starting at offset " << Header->e_phoff << "\n\n" 3094 << "Program Headers:\n"; 3095 if (ELFT::Is64Bits) 3096 OS << " Type Offset VirtAddr PhysAddr " 3097 << " FileSiz MemSiz Flg Align\n"; 3098 else 3099 OS << " Type Offset VirtAddr PhysAddr FileSiz " 3100 << "MemSiz Flg Align\n"; 3101 for (const auto &Phdr : unwrapOrError(Obj->program_headers())) { 3102 Type = getElfPtType(Header->e_machine, Phdr.p_type); 3103 Offset = to_string(format_hex(Phdr.p_offset, 8)); 3104 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 3105 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 3106 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 3107 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 3108 Flag = printPhdrFlags(Phdr.p_flags); 3109 Align = to_string(format_hex(Phdr.p_align, 1)); 3110 Fields[0].Str = Type; 3111 Fields[1].Str = Offset; 3112 Fields[2].Str = VMA; 3113 Fields[3].Str = LMA; 3114 Fields[4].Str = FileSz; 3115 Fields[5].Str = MemSz; 3116 Fields[6].Str = Flag; 3117 Fields[7].Str = Align; 3118 for (auto Field : Fields) 3119 printField(Field); 3120 if (Phdr.p_type == ELF::PT_INTERP) { 3121 OS << "\n [Requesting program interpreter: "; 3122 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 3123 } 3124 OS << "\n"; 3125 } 3126 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 3127 int Phnum = 0; 3128 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3129 std::string Sections; 3130 OS << format(" %2.2d ", Phnum++); 3131 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3132 // Check if each section is in a segment and then print mapping. 3133 // readelf additionally makes sure it does not print zero sized sections 3134 // at end of segments and for PT_DYNAMIC both start and end of section 3135 // .tbss must only be shown in PT_TLS section. 3136 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 3137 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 3138 Phdr.p_type != ELF::PT_TLS; 3139 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 3140 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 3141 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 3142 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 3143 } 3144 OS << Sections << "\n"; 3145 OS.flush(); 3146 } 3147 } 3148 3149 template <class ELFT> 3150 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 3151 bool IsRela) { 3152 SmallString<32> RelocName; 3153 StringRef SymbolName; 3154 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3155 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3156 // First two fields are bit width dependent. The rest of them are after are 3157 // fixed width. 3158 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3159 3160 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 3161 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3162 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3163 SymbolName = 3164 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3165 std::string Addend, Info, Offset, Value; 3166 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 3167 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 3168 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3169 int64_t RelAddend = R.r_addend; 3170 if (!SymbolName.empty() && IsRela) { 3171 if (R.r_addend < 0) 3172 Addend = " - "; 3173 else 3174 Addend = " + "; 3175 } 3176 3177 if (SymbolName.empty() && Sym->getValue() == 0) 3178 Value = ""; 3179 3180 if (IsRela) 3181 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 3182 3183 3184 Fields[0].Str = Offset; 3185 Fields[1].Str = Info; 3186 Fields[2].Str = RelocName.c_str(); 3187 Fields[3].Str = Value; 3188 Fields[4].Str = SymbolName; 3189 for (auto &Field : Fields) 3190 printField(Field); 3191 OS << Addend; 3192 OS << "\n"; 3193 } 3194 3195 template <class ELFT> 3196 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3197 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3198 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3199 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3200 if (DynRelaRegion.Size > 0) { 3201 OS << "\n'RELA' relocation section at offset " 3202 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3203 Obj->base(), 3204 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3205 printRelocHeader(OS, ELFT::Is64Bits, true); 3206 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3207 printDynamicRelocation(Obj, Rela, true); 3208 } 3209 if (DynRelRegion.Size > 0) { 3210 OS << "\n'REL' relocation section at offset " 3211 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3212 Obj->base(), 3213 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3214 printRelocHeader(OS, ELFT::Is64Bits, false); 3215 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3216 Elf_Rela Rela; 3217 Rela.r_offset = Rel.r_offset; 3218 Rela.r_info = Rel.r_info; 3219 Rela.r_addend = 0; 3220 printDynamicRelocation(Obj, Rela, false); 3221 } 3222 } 3223 if (DynPLTRelRegion.Size) { 3224 OS << "\n'PLT' relocation section at offset " 3225 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3226 Obj->base(), 3227 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3228 } 3229 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3230 printRelocHeader(OS, ELFT::Is64Bits, true); 3231 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3232 printDynamicRelocation(Obj, Rela, true); 3233 } else { 3234 printRelocHeader(OS, ELFT::Is64Bits, false); 3235 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3236 Elf_Rela Rela; 3237 Rela.r_offset = Rel.r_offset; 3238 Rela.r_info = Rel.r_info; 3239 Rela.r_addend = 0; 3240 printDynamicRelocation(Obj, Rela, false); 3241 } 3242 } 3243 } 3244 3245 // Hash histogram shows statistics of how efficient the hash was for the 3246 // dynamic symbol table. The table shows number of hash buckets for different 3247 // lengths of chains as absolute number and percentage of the total buckets. 3248 // Additionally cumulative coverage of symbols for each set of buckets. 3249 template <class ELFT> 3250 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3251 3252 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3253 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3254 3255 // Print histogram for .hash section 3256 if (HashTable) { 3257 size_t NBucket = HashTable->nbucket; 3258 size_t NChain = HashTable->nchain; 3259 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3260 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3261 size_t TotalSyms = 0; 3262 // If hash table is correct, we have at least chains with 0 length 3263 size_t MaxChain = 1; 3264 size_t CumulativeNonZero = 0; 3265 3266 if (NChain == 0 || NBucket == 0) 3267 return; 3268 3269 std::vector<size_t> ChainLen(NBucket, 0); 3270 // Go over all buckets and and note chain lengths of each bucket (total 3271 // unique chain lengths). 3272 for (size_t B = 0; B < NBucket; B++) { 3273 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3274 if (MaxChain <= ++ChainLen[B]) 3275 MaxChain++; 3276 TotalSyms += ChainLen[B]; 3277 } 3278 3279 if (!TotalSyms) 3280 return; 3281 3282 std::vector<size_t> Count(MaxChain, 0) ; 3283 // Count how long is the chain for each bucket 3284 for (size_t B = 0; B < NBucket; B++) 3285 ++Count[ChainLen[B]]; 3286 // Print Number of buckets with each chain lengths and their cumulative 3287 // coverage of the symbols 3288 OS << "Histogram for bucket list length (total of " << NBucket 3289 << " buckets)\n" 3290 << " Length Number % of total Coverage\n"; 3291 for (size_t I = 0; I < MaxChain; I++) { 3292 CumulativeNonZero += Count[I] * I; 3293 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3294 (Count[I] * 100.0) / NBucket, 3295 (CumulativeNonZero * 100.0) / TotalSyms); 3296 } 3297 } 3298 3299 // Print histogram for .gnu.hash section 3300 if (GnuHashTable) { 3301 size_t NBucket = GnuHashTable->nbuckets; 3302 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3303 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3304 if (!NumSyms) 3305 return; 3306 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3307 size_t Symndx = GnuHashTable->symndx; 3308 size_t TotalSyms = 0; 3309 size_t MaxChain = 1; 3310 size_t CumulativeNonZero = 0; 3311 3312 if (Chains.empty() || NBucket == 0) 3313 return; 3314 3315 std::vector<size_t> ChainLen(NBucket, 0); 3316 3317 for (size_t B = 0; B < NBucket; B++) { 3318 if (!Buckets[B]) 3319 continue; 3320 size_t Len = 1; 3321 for (size_t C = Buckets[B] - Symndx; 3322 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3323 if (MaxChain < ++Len) 3324 MaxChain++; 3325 ChainLen[B] = Len; 3326 TotalSyms += Len; 3327 } 3328 MaxChain++; 3329 3330 if (!TotalSyms) 3331 return; 3332 3333 std::vector<size_t> Count(MaxChain, 0) ; 3334 for (size_t B = 0; B < NBucket; B++) 3335 ++Count[ChainLen[B]]; 3336 // Print Number of buckets with each chain lengths and their cumulative 3337 // coverage of the symbols 3338 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3339 << " buckets)\n" 3340 << " Length Number % of total Coverage\n"; 3341 for (size_t I = 0; I <MaxChain; I++) { 3342 CumulativeNonZero += Count[I] * I; 3343 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3344 (Count[I] * 100.0) / NBucket, 3345 (CumulativeNonZero * 100.0) / TotalSyms); 3346 } 3347 } 3348 } 3349 3350 static std::string getGNUNoteTypeName(const uint32_t NT) { 3351 static const struct { 3352 uint32_t ID; 3353 const char *Name; 3354 } Notes[] = { 3355 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 3356 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 3357 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 3358 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 3359 }; 3360 3361 for (const auto &Note : Notes) 3362 if (Note.ID == NT) 3363 return std::string(Note.Name); 3364 3365 std::string string; 3366 raw_string_ostream OS(string); 3367 OS << format("Unknown note type (0x%08x)", NT); 3368 return OS.str(); 3369 } 3370 3371 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 3372 static const struct { 3373 uint32_t ID; 3374 const char *Name; 3375 } Notes[] = { 3376 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 3377 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 3378 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 3379 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 3380 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 3381 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 3382 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 3383 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 3384 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 3385 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 3386 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 3387 }; 3388 3389 for (const auto &Note : Notes) 3390 if (Note.ID == NT) 3391 return std::string(Note.Name); 3392 3393 std::string string; 3394 raw_string_ostream OS(string); 3395 OS << format("Unknown note type (0x%08x)", NT); 3396 return OS.str(); 3397 } 3398 3399 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 3400 static const struct { 3401 uint32_t ID; 3402 const char *Name; 3403 } Notes[] = { 3404 {ELF::NT_AMD_AMDGPU_HSA_METADATA, 3405 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 3406 {ELF::NT_AMD_AMDGPU_ISA, 3407 "NT_AMD_AMDGPU_ISA (ISA Version)"}, 3408 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 3409 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"} 3410 }; 3411 3412 for (const auto &Note : Notes) 3413 if (Note.ID == NT) 3414 return std::string(Note.Name); 3415 3416 std::string string; 3417 raw_string_ostream OS(string); 3418 OS << format("Unknown note type (0x%08x)", NT); 3419 return OS.str(); 3420 } 3421 3422 template <typename ELFT> 3423 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 3424 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3425 switch (NoteType) { 3426 default: 3427 return; 3428 case ELF::NT_GNU_ABI_TAG: { 3429 static const char *OSNames[] = { 3430 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 3431 }; 3432 3433 StringRef OSName = "Unknown"; 3434 if (Words[0] < array_lengthof(OSNames)) 3435 OSName = OSNames[Words[0]]; 3436 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 3437 3438 if (Words.size() < 4) 3439 OS << " <corrupt GNU_ABI_TAG>"; 3440 else 3441 OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "." 3442 << Patch; 3443 break; 3444 } 3445 case ELF::NT_GNU_BUILD_ID: { 3446 OS << " Build ID: "; 3447 ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size); 3448 for (const auto &B : ID) 3449 OS << format_hex_no_prefix(B, 2); 3450 break; 3451 } 3452 case ELF::NT_GNU_GOLD_VERSION: 3453 OS << " Version: " 3454 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3455 break; 3456 } 3457 3458 OS << '\n'; 3459 } 3460 3461 template <typename ELFT> 3462 static void printAMDGPUNote(raw_ostream &OS, uint32_t NoteType, 3463 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3464 switch (NoteType) { 3465 default: 3466 return; 3467 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 3468 OS << " HSA Metadata:\n" 3469 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3470 break; 3471 case ELF::NT_AMD_AMDGPU_ISA: 3472 OS << " ISA Version:\n" 3473 << " " 3474 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3475 break; 3476 case ELF::NT_AMD_AMDGPU_PAL_METADATA: 3477 const uint32_t *PALMetadataBegin = reinterpret_cast<const uint32_t *>(Words.data()); 3478 const uint32_t *PALMetadataEnd = PALMetadataBegin + Size; 3479 std::vector<uint32_t> PALMetadata(PALMetadataBegin, PALMetadataEnd); 3480 std::string PALMetadataString; 3481 auto Error = AMDGPU::PALMD::toString(PALMetadata, PALMetadataString); 3482 OS << " PAL Metadata:\n"; 3483 if (Error) { 3484 OS << " Invalid"; 3485 return; 3486 } 3487 OS << PALMetadataString; 3488 break; 3489 } 3490 OS.flush(); 3491 } 3492 3493 template <class ELFT> 3494 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3495 const Elf_Ehdr *e = Obj->getHeader(); 3496 bool IsCore = e->e_type == ELF::ET_CORE; 3497 3498 auto process = [&](const typename ELFT::Off Offset, 3499 const typename ELFT::Addr Size) { 3500 if (Size <= 0) 3501 return; 3502 3503 const auto *P = static_cast<const uint8_t *>(Obj->base() + Offset); 3504 const auto *E = P + Size; 3505 3506 OS << "Displaying notes found at file offset " << format_hex(Offset, 10) 3507 << " with length " << format_hex(Size, 10) << ":\n" 3508 << " Owner Data size\tDescription\n"; 3509 3510 while (P < E) { 3511 const Elf_Word *Words = reinterpret_cast<const Elf_Word *>(&P[0]); 3512 3513 uint32_t NameSize = Words[0]; 3514 uint32_t DescriptorSize = Words[1]; 3515 uint32_t Type = Words[2]; 3516 3517 ArrayRef<Elf_Word> Descriptor(&Words[3 + (alignTo<4>(NameSize) / 4)], 3518 alignTo<4>(DescriptorSize) / 4); 3519 3520 StringRef Name; 3521 if (NameSize) 3522 Name = 3523 StringRef(reinterpret_cast<const char *>(&Words[3]), NameSize - 1); 3524 3525 OS << " " << Name << std::string(22 - NameSize, ' ') 3526 << format_hex(DescriptorSize, 10) << '\t'; 3527 3528 if (Name == "GNU") { 3529 OS << getGNUNoteTypeName(Type) << '\n'; 3530 printGNUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3531 } else if (Name == "FreeBSD") { 3532 OS << getFreeBSDNoteTypeName(Type) << '\n'; 3533 } else if (Name == "AMD") { 3534 OS << getAMDGPUNoteTypeName(Type) << '\n'; 3535 printAMDGPUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3536 } else { 3537 OS << "Unknown note type: (" << format_hex(Type, 10) << ')'; 3538 } 3539 OS << '\n'; 3540 3541 P = P + 3 * sizeof(Elf_Word) + alignTo<4>(NameSize) + 3542 alignTo<4>(DescriptorSize); 3543 } 3544 }; 3545 3546 if (IsCore) { 3547 for (const auto &P : unwrapOrError(Obj->program_headers())) 3548 if (P.p_type == PT_NOTE) 3549 process(P.p_offset, P.p_filesz); 3550 } else { 3551 for (const auto &S : unwrapOrError(Obj->sections())) 3552 if (S.sh_type == SHT_NOTE) 3553 process(S.sh_offset, S.sh_size); 3554 } 3555 } 3556 3557 template <class ELFT> 3558 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 3559 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3560 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3561 OS.PadToColumn(2); 3562 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3563 OS.PadToColumn(11 + Bias); 3564 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 3565 OS.PadToColumn(22 + Bias); 3566 OS << format_hex_no_prefix(*E, 8 + Bias); 3567 OS.PadToColumn(31 + 2 * Bias); 3568 OS << Purpose << "\n"; 3569 }; 3570 3571 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 3572 OS << " Canonical gp value: " 3573 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 3574 3575 OS << " Reserved entries:\n"; 3576 OS << " Address Access Initial Purpose\n"; 3577 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 3578 if (Parser.getGotModulePointer()) 3579 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 3580 3581 if (!Parser.getLocalEntries().empty()) { 3582 OS << "\n"; 3583 OS << " Local entries:\n"; 3584 OS << " Address Access Initial\n"; 3585 for (auto &E : Parser.getLocalEntries()) 3586 PrintEntry(&E, ""); 3587 } 3588 3589 if (Parser.IsStatic) 3590 return; 3591 3592 if (!Parser.getGlobalEntries().empty()) { 3593 OS << "\n"; 3594 OS << " Global entries:\n"; 3595 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 3596 for (auto &E : Parser.getGlobalEntries()) { 3597 const Elf_Sym *Sym = Parser.getGotSym(&E); 3598 std::string SymName = this->dumper()->getFullSymbolName( 3599 Sym, this->dumper()->getDynamicStringTable(), false); 3600 3601 OS.PadToColumn(2); 3602 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3603 OS.PadToColumn(11 + Bias); 3604 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 3605 OS.PadToColumn(22 + Bias); 3606 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3607 OS.PadToColumn(31 + 2 * Bias); 3608 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3609 OS.PadToColumn(40 + 3 * Bias); 3610 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3611 OS.PadToColumn(48 + 3 * Bias); 3612 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3613 this->dumper()->dynamic_symbols().begin()); 3614 OS.PadToColumn(52 + 3 * Bias); 3615 OS << SymName << "\n"; 3616 } 3617 } 3618 3619 if (!Parser.getOtherEntries().empty()) 3620 OS << "\n Number of TLS and multi-GOT entries " 3621 << Parser.getOtherEntries().size() << "\n"; 3622 } 3623 3624 template <class ELFT> 3625 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 3626 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3627 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3628 OS.PadToColumn(2); 3629 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3630 OS.PadToColumn(11 + Bias); 3631 OS << format_hex_no_prefix(*E, 8 + Bias); 3632 OS.PadToColumn(20 + 2 * Bias); 3633 OS << Purpose << "\n"; 3634 }; 3635 3636 OS << "PLT GOT:\n\n"; 3637 3638 OS << " Reserved entries:\n"; 3639 OS << " Address Initial Purpose\n"; 3640 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 3641 if (Parser.getPltModulePointer()) 3642 PrintEntry(Parser.getGotModulePointer(), "Module pointer"); 3643 3644 if (!Parser.getPltEntries().empty()) { 3645 OS << "\n"; 3646 OS << " Entries:\n"; 3647 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 3648 for (auto &E : Parser.getPltEntries()) { 3649 const Elf_Sym *Sym = Parser.getPltSym(&E); 3650 std::string SymName = this->dumper()->getFullSymbolName( 3651 Sym, this->dumper()->getDynamicStringTable(), false); 3652 3653 OS.PadToColumn(2); 3654 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3655 OS.PadToColumn(11 + Bias); 3656 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3657 OS.PadToColumn(20 + 2 * Bias); 3658 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3659 OS.PadToColumn(29 + 3 * Bias); 3660 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3661 OS.PadToColumn(37 + 3 * Bias); 3662 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3663 this->dumper()->dynamic_symbols().begin()); 3664 OS.PadToColumn(41 + 3 * Bias); 3665 OS << SymName << "\n"; 3666 } 3667 } 3668 } 3669 3670 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3671 const Elf_Ehdr *e = Obj->getHeader(); 3672 { 3673 DictScope D(W, "ElfHeader"); 3674 { 3675 DictScope D(W, "Ident"); 3676 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3677 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3678 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3679 makeArrayRef(ElfDataEncoding)); 3680 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3681 3682 auto OSABI = makeArrayRef(ElfOSABI); 3683 if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 3684 e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 3685 switch (e->e_machine) { 3686 case ELF::EM_AMDGPU: 3687 OSABI = makeArrayRef(AMDGPUElfOSABI); 3688 break; 3689 case ELF::EM_ARM: 3690 OSABI = makeArrayRef(ARMElfOSABI); 3691 break; 3692 case ELF::EM_TI_C6000: 3693 OSABI = makeArrayRef(C6000ElfOSABI); 3694 break; 3695 } 3696 } 3697 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI); 3698 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3699 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3700 } 3701 3702 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3703 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3704 W.printNumber("Version", e->e_version); 3705 W.printHex("Entry", e->e_entry); 3706 W.printHex("ProgramHeaderOffset", e->e_phoff); 3707 W.printHex("SectionHeaderOffset", e->e_shoff); 3708 if (e->e_machine == EM_MIPS) 3709 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3710 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3711 unsigned(ELF::EF_MIPS_MACH)); 3712 else if (e->e_machine == EM_AMDGPU) 3713 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 3714 unsigned(ELF::EF_AMDGPU_ARCH)); 3715 else if (e->e_machine == EM_RISCV) 3716 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3717 else 3718 W.printFlags("Flags", e->e_flags); 3719 W.printNumber("HeaderSize", e->e_ehsize); 3720 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3721 W.printNumber("ProgramHeaderCount", e->e_phnum); 3722 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3723 W.printNumber("SectionHeaderCount", e->e_shnum); 3724 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3725 } 3726 } 3727 3728 template <class ELFT> 3729 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3730 DictScope Lists(W, "Groups"); 3731 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 3732 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3733 for (const GroupSection &G : V) { 3734 DictScope D(W, "Group"); 3735 W.printNumber("Name", G.Name, G.ShName); 3736 W.printNumber("Index", G.Index); 3737 W.printHex("Type", getGroupType(G.Type), G.Type); 3738 W.startLine() << "Signature: " << G.Signature << "\n"; 3739 3740 ListScope L(W, "Section(s) in group"); 3741 for (const GroupMember &GM : G.Members) { 3742 const GroupSection *MainGroup = Map[GM.Index]; 3743 if (MainGroup != &G) { 3744 W.flush(); 3745 errs() << "Error: " << GM.Name << " (" << GM.Index 3746 << ") in a group " + G.Name + " (" << G.Index 3747 << ") is already in a group " + MainGroup->Name + " (" 3748 << MainGroup->Index << ")\n"; 3749 errs().flush(); 3750 continue; 3751 } 3752 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 3753 } 3754 } 3755 3756 if (V.empty()) 3757 W.startLine() << "There are no group sections in the file.\n"; 3758 } 3759 3760 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3761 ListScope D(W, "Relocations"); 3762 3763 int SectionNumber = -1; 3764 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3765 ++SectionNumber; 3766 3767 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3768 Sec.sh_type != ELF::SHT_ANDROID_REL && 3769 Sec.sh_type != ELF::SHT_ANDROID_RELA) 3770 continue; 3771 3772 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3773 3774 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3775 W.indent(); 3776 3777 printRelocations(&Sec, Obj); 3778 3779 W.unindent(); 3780 W.startLine() << "}\n"; 3781 } 3782 } 3783 3784 template <class ELFT> 3785 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3786 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3787 3788 switch (Sec->sh_type) { 3789 case ELF::SHT_REL: 3790 for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) { 3791 Elf_Rela Rela; 3792 Rela.r_offset = R.r_offset; 3793 Rela.r_info = R.r_info; 3794 Rela.r_addend = 0; 3795 printRelocation(Obj, Rela, SymTab); 3796 } 3797 break; 3798 case ELF::SHT_RELA: 3799 for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec))) 3800 printRelocation(Obj, R, SymTab); 3801 break; 3802 case ELF::SHT_ANDROID_REL: 3803 case ELF::SHT_ANDROID_RELA: 3804 for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec))) 3805 printRelocation(Obj, R, SymTab); 3806 break; 3807 } 3808 } 3809 3810 template <class ELFT> 3811 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3812 const Elf_Shdr *SymTab) { 3813 SmallString<32> RelocName; 3814 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3815 StringRef TargetName; 3816 const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab)); 3817 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3818 const Elf_Shdr *Sec = unwrapOrError( 3819 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3820 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3821 } else if (Sym) { 3822 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3823 TargetName = unwrapOrError(Sym->getName(StrTable)); 3824 } 3825 3826 if (opts::ExpandRelocs) { 3827 DictScope Group(W, "Relocation"); 3828 W.printHex("Offset", Rel.r_offset); 3829 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3830 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 3831 Rel.getSymbol(Obj->isMips64EL())); 3832 W.printHex("Addend", Rel.r_addend); 3833 } else { 3834 raw_ostream &OS = W.startLine(); 3835 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3836 << (!TargetName.empty() ? TargetName : "-") << " " 3837 << W.hex(Rel.r_addend) << "\n"; 3838 } 3839 } 3840 3841 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3842 ListScope SectionsD(W, "Sections"); 3843 3844 int SectionIndex = -1; 3845 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3846 ++SectionIndex; 3847 3848 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3849 3850 DictScope SectionD(W, "Section"); 3851 W.printNumber("Index", SectionIndex); 3852 W.printNumber("Name", Name, Sec.sh_name); 3853 W.printHex( 3854 "Type", 3855 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 3856 Sec.sh_type); 3857 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3858 std::end(ElfSectionFlags)); 3859 switch (Obj->getHeader()->e_machine) { 3860 case EM_ARM: 3861 SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags), 3862 std::end(ElfARMSectionFlags)); 3863 break; 3864 case EM_HEXAGON: 3865 SectionFlags.insert(SectionFlags.end(), 3866 std::begin(ElfHexagonSectionFlags), 3867 std::end(ElfHexagonSectionFlags)); 3868 break; 3869 case EM_MIPS: 3870 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3871 std::end(ElfMipsSectionFlags)); 3872 break; 3873 case EM_X86_64: 3874 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3875 std::end(ElfX86_64SectionFlags)); 3876 break; 3877 case EM_XCORE: 3878 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3879 std::end(ElfXCoreSectionFlags)); 3880 break; 3881 default: 3882 // Nothing to do. 3883 break; 3884 } 3885 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3886 W.printHex("Address", Sec.sh_addr); 3887 W.printHex("Offset", Sec.sh_offset); 3888 W.printNumber("Size", Sec.sh_size); 3889 W.printNumber("Link", Sec.sh_link); 3890 W.printNumber("Info", Sec.sh_info); 3891 W.printNumber("AddressAlignment", Sec.sh_addralign); 3892 W.printNumber("EntrySize", Sec.sh_entsize); 3893 3894 if (opts::SectionRelocations) { 3895 ListScope D(W, "Relocations"); 3896 printRelocations(&Sec, Obj); 3897 } 3898 3899 if (opts::SectionSymbols) { 3900 ListScope D(W, "Symbols"); 3901 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3902 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3903 3904 for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) { 3905 const Elf_Shdr *SymSec = unwrapOrError( 3906 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3907 if (SymSec == &Sec) 3908 printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(), 3909 StrTable, false); 3910 } 3911 } 3912 3913 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3914 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3915 W.printBinaryBlock("SectionData", 3916 StringRef((const char *)Data.data(), Data.size())); 3917 } 3918 } 3919 } 3920 3921 template <class ELFT> 3922 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3923 const Elf_Sym *First, StringRef StrTable, 3924 bool IsDynamic) { 3925 unsigned SectionIndex = 0; 3926 StringRef SectionName; 3927 this->dumper()->getSectionNameIndex(Symbol, First, SectionName, SectionIndex); 3928 std::string FullSymbolName = 3929 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3930 unsigned char SymbolType = Symbol->getType(); 3931 3932 DictScope D(W, "Symbol"); 3933 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3934 W.printHex("Value", Symbol->st_value); 3935 W.printNumber("Size", Symbol->st_size); 3936 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3937 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3938 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3939 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3940 else 3941 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3942 if (Symbol->st_other == 0) 3943 // Usually st_other flag is zero. Do not pollute the output 3944 // by flags enumeration in that case. 3945 W.printNumber("Other", 0); 3946 else { 3947 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3948 std::end(ElfSymOtherFlags)); 3949 if (Obj->getHeader()->e_machine == EM_MIPS) { 3950 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3951 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3952 // cases separately. 3953 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3954 SymOtherFlags.insert(SymOtherFlags.end(), 3955 std::begin(ElfMips16SymOtherFlags), 3956 std::end(ElfMips16SymOtherFlags)); 3957 else 3958 SymOtherFlags.insert(SymOtherFlags.end(), 3959 std::begin(ElfMipsSymOtherFlags), 3960 std::end(ElfMipsSymOtherFlags)); 3961 } 3962 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3963 } 3964 W.printHex("Section", SectionName, SectionIndex); 3965 } 3966 3967 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3968 ListScope Group(W, "Symbols"); 3969 this->dumper()->printSymbolsHelper(false); 3970 } 3971 3972 template <class ELFT> 3973 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3974 ListScope Group(W, "DynamicSymbols"); 3975 this->dumper()->printSymbolsHelper(true); 3976 } 3977 3978 template <class ELFT> 3979 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3980 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3981 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3982 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3983 if (DynRelRegion.Size && DynRelaRegion.Size) 3984 report_fatal_error("There are both REL and RELA dynamic relocations"); 3985 W.startLine() << "Dynamic Relocations {\n"; 3986 W.indent(); 3987 if (DynRelaRegion.Size > 0) 3988 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3989 printDynamicRelocation(Obj, Rela); 3990 else 3991 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3992 Elf_Rela Rela; 3993 Rela.r_offset = Rel.r_offset; 3994 Rela.r_info = Rel.r_info; 3995 Rela.r_addend = 0; 3996 printDynamicRelocation(Obj, Rela); 3997 } 3998 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3999 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 4000 printDynamicRelocation(Obj, Rela); 4001 else 4002 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 4003 Elf_Rela Rela; 4004 Rela.r_offset = Rel.r_offset; 4005 Rela.r_info = Rel.r_info; 4006 Rela.r_addend = 0; 4007 printDynamicRelocation(Obj, Rela); 4008 } 4009 W.unindent(); 4010 W.startLine() << "}\n"; 4011 } 4012 4013 template <class ELFT> 4014 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 4015 SmallString<32> RelocName; 4016 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 4017 StringRef SymbolName; 4018 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 4019 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 4020 SymbolName = 4021 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 4022 if (opts::ExpandRelocs) { 4023 DictScope Group(W, "Relocation"); 4024 W.printHex("Offset", Rel.r_offset); 4025 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 4026 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 4027 W.printHex("Addend", Rel.r_addend); 4028 } else { 4029 raw_ostream &OS = W.startLine(); 4030 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 4031 << (!SymbolName.empty() ? SymbolName : "-") << " " 4032 << W.hex(Rel.r_addend) << "\n"; 4033 } 4034 } 4035 4036 template <class ELFT> 4037 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 4038 ListScope L(W, "ProgramHeaders"); 4039 4040 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 4041 DictScope P(W, "ProgramHeader"); 4042 W.printHex("Type", 4043 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 4044 Phdr.p_type); 4045 W.printHex("Offset", Phdr.p_offset); 4046 W.printHex("VirtualAddress", Phdr.p_vaddr); 4047 W.printHex("PhysicalAddress", Phdr.p_paddr); 4048 W.printNumber("FileSize", Phdr.p_filesz); 4049 W.printNumber("MemSize", Phdr.p_memsz); 4050 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 4051 W.printNumber("Alignment", Phdr.p_align); 4052 } 4053 } 4054 4055 template <class ELFT> 4056 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 4057 W.startLine() << "Hash Histogram not implemented!\n"; 4058 } 4059 4060 template <class ELFT> 4061 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 4062 W.startLine() << "printNotes not implemented!\n"; 4063 } 4064 4065 template <class ELFT> 4066 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 4067 auto PrintEntry = [&](const Elf_Addr *E) { 4068 W.printHex("Address", Parser.getGotAddress(E)); 4069 W.printNumber("Access", Parser.getGotOffset(E)); 4070 W.printHex("Initial", *E); 4071 }; 4072 4073 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 4074 4075 W.printHex("Canonical gp value", Parser.getGp()); 4076 { 4077 ListScope RS(W, "Reserved entries"); 4078 { 4079 DictScope D(W, "Entry"); 4080 PrintEntry(Parser.getGotLazyResolver()); 4081 W.printString("Purpose", StringRef("Lazy resolver")); 4082 } 4083 4084 if (Parser.getGotModulePointer()) { 4085 DictScope D(W, "Entry"); 4086 PrintEntry(Parser.getGotModulePointer()); 4087 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 4088 } 4089 } 4090 { 4091 ListScope LS(W, "Local entries"); 4092 for (auto &E : Parser.getLocalEntries()) { 4093 DictScope D(W, "Entry"); 4094 PrintEntry(&E); 4095 } 4096 } 4097 4098 if (Parser.IsStatic) 4099 return; 4100 4101 { 4102 ListScope GS(W, "Global entries"); 4103 for (auto &E : Parser.getGlobalEntries()) { 4104 DictScope D(W, "Entry"); 4105 4106 PrintEntry(&E); 4107 4108 const Elf_Sym *Sym = Parser.getGotSym(&E); 4109 W.printHex("Value", Sym->st_value); 4110 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4111 4112 unsigned SectionIndex = 0; 4113 StringRef SectionName; 4114 this->dumper()->getSectionNameIndex( 4115 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4116 SectionIndex); 4117 W.printHex("Section", SectionName, SectionIndex); 4118 4119 std::string SymName = this->dumper()->getFullSymbolName( 4120 Sym, this->dumper()->getDynamicStringTable(), true); 4121 W.printNumber("Name", SymName, Sym->st_name); 4122 } 4123 } 4124 4125 W.printNumber("Number of TLS and multi-GOT entries", 4126 uint64_t(Parser.getOtherEntries().size())); 4127 } 4128 4129 template <class ELFT> 4130 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 4131 auto PrintEntry = [&](const Elf_Addr *E) { 4132 W.printHex("Address", Parser.getPltAddress(E)); 4133 W.printHex("Initial", *E); 4134 }; 4135 4136 DictScope GS(W, "PLT GOT"); 4137 4138 { 4139 ListScope RS(W, "Reserved entries"); 4140 { 4141 DictScope D(W, "Entry"); 4142 PrintEntry(Parser.getPltLazyResolver()); 4143 W.printString("Purpose", StringRef("PLT lazy resolver")); 4144 } 4145 4146 if (auto E = Parser.getPltModulePointer()) { 4147 DictScope D(W, "Entry"); 4148 PrintEntry(E); 4149 W.printString("Purpose", StringRef("Module pointer")); 4150 } 4151 } 4152 { 4153 ListScope LS(W, "Entries"); 4154 for (auto &E : Parser.getPltEntries()) { 4155 DictScope D(W, "Entry"); 4156 PrintEntry(&E); 4157 4158 const Elf_Sym *Sym = Parser.getPltSym(&E); 4159 W.printHex("Value", Sym->st_value); 4160 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4161 4162 unsigned SectionIndex = 0; 4163 StringRef SectionName; 4164 this->dumper()->getSectionNameIndex( 4165 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4166 SectionIndex); 4167 W.printHex("Section", SectionName, SectionIndex); 4168 4169 std::string SymName = 4170 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true); 4171 W.printNumber("Name", SymName, Sym->st_name); 4172 } 4173 } 4174 } 4175