1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// 9 /// \file 10 /// This file implements the ELF-specific dumper for llvm-readobj. 11 /// 12 //===----------------------------------------------------------------------===// 13 14 #include "ARMEHABIPrinter.h" 15 #include "DwarfCFIEHPrinter.h" 16 #include "ObjDumper.h" 17 #include "StackMapPrinter.h" 18 #include "llvm-readobj.h" 19 #include "llvm/ADT/ArrayRef.h" 20 #include "llvm/ADT/BitVector.h" 21 #include "llvm/ADT/DenseMap.h" 22 #include "llvm/ADT/DenseSet.h" 23 #include "llvm/ADT/MapVector.h" 24 #include "llvm/ADT/Optional.h" 25 #include "llvm/ADT/PointerIntPair.h" 26 #include "llvm/ADT/STLExtras.h" 27 #include "llvm/ADT/SmallString.h" 28 #include "llvm/ADT/SmallVector.h" 29 #include "llvm/ADT/StringExtras.h" 30 #include "llvm/ADT/StringRef.h" 31 #include "llvm/ADT/Twine.h" 32 #include "llvm/BinaryFormat/AMDGPUMetadataVerifier.h" 33 #include "llvm/BinaryFormat/ELF.h" 34 #include "llvm/BinaryFormat/MsgPackDocument.h" 35 #include "llvm/Demangle/Demangle.h" 36 #include "llvm/Object/Archive.h" 37 #include "llvm/Object/ELF.h" 38 #include "llvm/Object/ELFObjectFile.h" 39 #include "llvm/Object/ELFTypes.h" 40 #include "llvm/Object/Error.h" 41 #include "llvm/Object/ObjectFile.h" 42 #include "llvm/Object/RelocationResolver.h" 43 #include "llvm/Object/StackMapParser.h" 44 #include "llvm/Support/AMDGPUMetadata.h" 45 #include "llvm/Support/ARMAttributeParser.h" 46 #include "llvm/Support/ARMBuildAttributes.h" 47 #include "llvm/Support/Casting.h" 48 #include "llvm/Support/Compiler.h" 49 #include "llvm/Support/Endian.h" 50 #include "llvm/Support/ErrorHandling.h" 51 #include "llvm/Support/Format.h" 52 #include "llvm/Support/FormatVariadic.h" 53 #include "llvm/Support/FormattedStream.h" 54 #include "llvm/Support/LEB128.h" 55 #include "llvm/Support/MSP430AttributeParser.h" 56 #include "llvm/Support/MSP430Attributes.h" 57 #include "llvm/Support/MathExtras.h" 58 #include "llvm/Support/MipsABIFlags.h" 59 #include "llvm/Support/RISCVAttributeParser.h" 60 #include "llvm/Support/RISCVAttributes.h" 61 #include "llvm/Support/ScopedPrinter.h" 62 #include "llvm/Support/raw_ostream.h" 63 #include <algorithm> 64 #include <cinttypes> 65 #include <cstddef> 66 #include <cstdint> 67 #include <cstdlib> 68 #include <iterator> 69 #include <memory> 70 #include <string> 71 #include <system_error> 72 #include <vector> 73 74 using namespace llvm; 75 using namespace llvm::object; 76 using namespace ELF; 77 78 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 79 case ns::enum: \ 80 return #enum; 81 82 #define ENUM_ENT(enum, altName) \ 83 { #enum, altName, ELF::enum } 84 85 #define ENUM_ENT_1(enum) \ 86 { #enum, #enum, ELF::enum } 87 88 namespace { 89 90 template <class ELFT> struct RelSymbol { 91 RelSymbol(const typename ELFT::Sym *S, StringRef N) 92 : Sym(S), Name(N.str()) {} 93 const typename ELFT::Sym *Sym; 94 std::string Name; 95 }; 96 97 /// Represents a contiguous uniform range in the file. We cannot just create a 98 /// range directly because when creating one of these from the .dynamic table 99 /// the size, entity size and virtual address are different entries in arbitrary 100 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 101 struct DynRegionInfo { 102 DynRegionInfo(const Binary &Owner, const ObjDumper &D) 103 : Obj(&Owner), Dumper(&D) {} 104 DynRegionInfo(const Binary &Owner, const ObjDumper &D, const uint8_t *A, 105 uint64_t S, uint64_t ES) 106 : Addr(A), Size(S), EntSize(ES), Obj(&Owner), Dumper(&D) {} 107 108 /// Address in current address space. 109 const uint8_t *Addr = nullptr; 110 /// Size in bytes of the region. 111 uint64_t Size = 0; 112 /// Size of each entity in the region. 113 uint64_t EntSize = 0; 114 115 /// Owner object. Used for error reporting. 116 const Binary *Obj; 117 /// Dumper used for error reporting. 118 const ObjDumper *Dumper; 119 /// Error prefix. Used for error reporting to provide more information. 120 std::string Context; 121 /// Region size name. Used for error reporting. 122 StringRef SizePrintName = "size"; 123 /// Entry size name. Used for error reporting. If this field is empty, errors 124 /// will not mention the entry size. 125 StringRef EntSizePrintName = "entry size"; 126 127 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 128 const Type *Start = reinterpret_cast<const Type *>(Addr); 129 if (!Start) 130 return {Start, Start}; 131 132 const uint64_t Offset = 133 Addr - (const uint8_t *)Obj->getMemoryBufferRef().getBufferStart(); 134 const uint64_t ObjSize = Obj->getMemoryBufferRef().getBufferSize(); 135 136 if (Size > ObjSize - Offset) { 137 Dumper->reportUniqueWarning( 138 "unable to read data at 0x" + Twine::utohexstr(Offset) + 139 " of size 0x" + Twine::utohexstr(Size) + " (" + SizePrintName + 140 "): it goes past the end of the file of size 0x" + 141 Twine::utohexstr(ObjSize)); 142 return {Start, Start}; 143 } 144 145 if (EntSize == sizeof(Type) && (Size % EntSize == 0)) 146 return {Start, Start + (Size / EntSize)}; 147 148 std::string Msg; 149 if (!Context.empty()) 150 Msg += Context + " has "; 151 152 Msg += ("invalid " + SizePrintName + " (0x" + Twine::utohexstr(Size) + ")") 153 .str(); 154 if (!EntSizePrintName.empty()) 155 Msg += 156 (" or " + EntSizePrintName + " (0x" + Twine::utohexstr(EntSize) + ")") 157 .str(); 158 159 Dumper->reportUniqueWarning(Msg); 160 return {Start, Start}; 161 } 162 }; 163 164 struct GroupMember { 165 StringRef Name; 166 uint64_t Index; 167 }; 168 169 struct GroupSection { 170 StringRef Name; 171 std::string Signature; 172 uint64_t ShName; 173 uint64_t Index; 174 uint32_t Link; 175 uint32_t Info; 176 uint32_t Type; 177 std::vector<GroupMember> Members; 178 }; 179 180 namespace { 181 182 struct NoteType { 183 uint32_t ID; 184 StringRef Name; 185 }; 186 187 } // namespace 188 189 template <class ELFT> class Relocation { 190 public: 191 Relocation(const typename ELFT::Rel &R, bool IsMips64EL) 192 : Type(R.getType(IsMips64EL)), Symbol(R.getSymbol(IsMips64EL)), 193 Offset(R.r_offset), Info(R.r_info) {} 194 195 Relocation(const typename ELFT::Rela &R, bool IsMips64EL) 196 : Relocation((const typename ELFT::Rel &)R, IsMips64EL) { 197 Addend = R.r_addend; 198 } 199 200 uint32_t Type; 201 uint32_t Symbol; 202 typename ELFT::uint Offset; 203 typename ELFT::uint Info; 204 Optional<int64_t> Addend; 205 }; 206 207 template <class ELFT> class MipsGOTParser; 208 209 template <typename ELFT> class ELFDumper : public ObjDumper { 210 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 211 212 public: 213 ELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer); 214 215 void printUnwindInfo() override; 216 void printNeededLibraries() override; 217 void printHashTable() override; 218 void printGnuHashTable() override; 219 void printLoadName() override; 220 void printVersionInfo() override; 221 void printArchSpecificInfo() override; 222 void printStackMap() const override; 223 224 const object::ELFObjectFile<ELFT> &getElfObject() const { return ObjF; }; 225 226 std::string describe(const Elf_Shdr &Sec) const; 227 228 unsigned getHashTableEntSize() const { 229 // EM_S390 and ELF::EM_ALPHA platforms use 8-bytes entries in SHT_HASH 230 // sections. This violates the ELF specification. 231 if (Obj.getHeader().e_machine == ELF::EM_S390 || 232 Obj.getHeader().e_machine == ELF::EM_ALPHA) 233 return 8; 234 return 4; 235 } 236 237 Elf_Dyn_Range dynamic_table() const { 238 // A valid .dynamic section contains an array of entries terminated 239 // with a DT_NULL entry. However, sometimes the section content may 240 // continue past the DT_NULL entry, so to dump the section correctly, 241 // we first find the end of the entries by iterating over them. 242 Elf_Dyn_Range Table = DynamicTable.template getAsArrayRef<Elf_Dyn>(); 243 244 size_t Size = 0; 245 while (Size < Table.size()) 246 if (Table[Size++].getTag() == DT_NULL) 247 break; 248 249 return Table.slice(0, Size); 250 } 251 252 Elf_Sym_Range dynamic_symbols() const { 253 if (!DynSymRegion) 254 return Elf_Sym_Range(); 255 return DynSymRegion->template getAsArrayRef<Elf_Sym>(); 256 } 257 258 const Elf_Shdr *findSectionByName(StringRef Name) const; 259 260 StringRef getDynamicStringTable() const { return DynamicStringTable; } 261 262 protected: 263 virtual void printVersionSymbolSection(const Elf_Shdr *Sec) = 0; 264 virtual void printVersionDefinitionSection(const Elf_Shdr *Sec) = 0; 265 virtual void printVersionDependencySection(const Elf_Shdr *Sec) = 0; 266 267 void 268 printDependentLibsHelper(function_ref<void(const Elf_Shdr &)> OnSectionStart, 269 function_ref<void(StringRef, uint64_t)> OnLibEntry); 270 271 virtual void printRelRelaReloc(const Relocation<ELFT> &R, 272 const RelSymbol<ELFT> &RelSym) = 0; 273 virtual void printRelrReloc(const Elf_Relr &R) = 0; 274 virtual void printDynamicRelocHeader(unsigned Type, StringRef Name, 275 const DynRegionInfo &Reg) {} 276 void printReloc(const Relocation<ELFT> &R, unsigned RelIndex, 277 const Elf_Shdr &Sec, const Elf_Shdr *SymTab); 278 void printDynamicReloc(const Relocation<ELFT> &R); 279 void printDynamicRelocationsHelper(); 280 void printRelocationsHelper(const Elf_Shdr &Sec); 281 void forEachRelocationDo( 282 const Elf_Shdr &Sec, bool RawRelr, 283 llvm::function_ref<void(const Relocation<ELFT> &, unsigned, 284 const Elf_Shdr &, const Elf_Shdr *)> 285 RelRelaFn, 286 llvm::function_ref<void(const Elf_Relr &)> RelrFn); 287 288 virtual void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset, 289 bool NonVisibilityBitsUsed) const {}; 290 virtual void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, 291 DataRegion<Elf_Word> ShndxTable, 292 Optional<StringRef> StrTable, bool IsDynamic, 293 bool NonVisibilityBitsUsed) const = 0; 294 295 virtual void printMipsABIFlags() = 0; 296 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; 297 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; 298 299 Expected<ArrayRef<Elf_Versym>> 300 getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab, 301 StringRef *StrTab, const Elf_Shdr **SymTabSec) const; 302 StringRef getPrintableSectionName(const Elf_Shdr &Sec) const; 303 304 std::vector<GroupSection> getGroups(); 305 306 // Returns the function symbol index for the given address. Matches the 307 // symbol's section with FunctionSec when specified. 308 // Returns None if no function symbol can be found for the address or in case 309 // it is not defined in the specified section. 310 SmallVector<uint32_t> 311 getSymbolIndexesForFunctionAddress(uint64_t SymValue, 312 Optional<const Elf_Shdr *> FunctionSec); 313 bool printFunctionStackSize(uint64_t SymValue, 314 Optional<const Elf_Shdr *> FunctionSec, 315 const Elf_Shdr &StackSizeSec, DataExtractor Data, 316 uint64_t *Offset); 317 void printStackSize(const Relocation<ELFT> &R, const Elf_Shdr &RelocSec, 318 unsigned Ndx, const Elf_Shdr *SymTab, 319 const Elf_Shdr *FunctionSec, const Elf_Shdr &StackSizeSec, 320 const RelocationResolver &Resolver, DataExtractor Data); 321 virtual void printStackSizeEntry(uint64_t Size, 322 ArrayRef<std::string> FuncNames) = 0; 323 324 void printRelocatableStackSizes(std::function<void()> PrintHeader); 325 void printNonRelocatableStackSizes(std::function<void()> PrintHeader); 326 327 /// Retrieves sections with corresponding relocation sections based on 328 /// IsMatch. 329 void getSectionAndRelocations( 330 std::function<bool(const Elf_Shdr &)> IsMatch, 331 llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> &SecToRelocMap); 332 333 const object::ELFObjectFile<ELFT> &ObjF; 334 const ELFFile<ELFT> &Obj; 335 StringRef FileName; 336 337 Expected<DynRegionInfo> createDRI(uint64_t Offset, uint64_t Size, 338 uint64_t EntSize) { 339 if (Offset + Size < Offset || Offset + Size > Obj.getBufSize()) 340 return createError("offset (0x" + Twine::utohexstr(Offset) + 341 ") + size (0x" + Twine::utohexstr(Size) + 342 ") is greater than the file size (0x" + 343 Twine::utohexstr(Obj.getBufSize()) + ")"); 344 return DynRegionInfo(ObjF, *this, Obj.base() + Offset, Size, EntSize); 345 } 346 347 void printAttributes(unsigned, std::unique_ptr<ELFAttributeParser>, 348 support::endianness); 349 void printMipsReginfo(); 350 void printMipsOptions(); 351 352 std::pair<const Elf_Phdr *, const Elf_Shdr *> findDynamic(); 353 void loadDynamicTable(); 354 void parseDynamicTable(); 355 356 Expected<StringRef> getSymbolVersion(const Elf_Sym &Sym, 357 bool &IsDefault) const; 358 Expected<SmallVector<Optional<VersionEntry>, 0> *> getVersionMap() const; 359 360 DynRegionInfo DynRelRegion; 361 DynRegionInfo DynRelaRegion; 362 DynRegionInfo DynRelrRegion; 363 DynRegionInfo DynPLTRelRegion; 364 Optional<DynRegionInfo> DynSymRegion; 365 DynRegionInfo DynSymTabShndxRegion; 366 DynRegionInfo DynamicTable; 367 StringRef DynamicStringTable; 368 const Elf_Hash *HashTable = nullptr; 369 const Elf_GnuHash *GnuHashTable = nullptr; 370 const Elf_Shdr *DotSymtabSec = nullptr; 371 const Elf_Shdr *DotDynsymSec = nullptr; 372 const Elf_Shdr *DotAddrsigSec = nullptr; 373 DenseMap<const Elf_Shdr *, ArrayRef<Elf_Word>> ShndxTables; 374 Optional<uint64_t> SONameOffset; 375 Optional<DenseMap<uint64_t, std::vector<uint32_t>>> AddressToIndexMap; 376 377 const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version 378 const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r 379 const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d 380 381 std::string getFullSymbolName(const Elf_Sym &Symbol, unsigned SymIndex, 382 DataRegion<Elf_Word> ShndxTable, 383 Optional<StringRef> StrTable, 384 bool IsDynamic) const; 385 Expected<unsigned> 386 getSymbolSectionIndex(const Elf_Sym &Symbol, unsigned SymIndex, 387 DataRegion<Elf_Word> ShndxTable) const; 388 Expected<StringRef> getSymbolSectionName(const Elf_Sym &Symbol, 389 unsigned SectionIndex) const; 390 std::string getStaticSymbolName(uint32_t Index) const; 391 StringRef getDynamicString(uint64_t Value) const; 392 393 void printSymbolsHelper(bool IsDynamic) const; 394 std::string getDynamicEntry(uint64_t Type, uint64_t Value) const; 395 396 Expected<RelSymbol<ELFT>> getRelocationTarget(const Relocation<ELFT> &R, 397 const Elf_Shdr *SymTab) const; 398 399 ArrayRef<Elf_Word> getShndxTable(const Elf_Shdr *Symtab) const; 400 401 private: 402 mutable SmallVector<Optional<VersionEntry>, 0> VersionMap; 403 }; 404 405 template <class ELFT> 406 std::string ELFDumper<ELFT>::describe(const Elf_Shdr &Sec) const { 407 return ::describe(Obj, Sec); 408 } 409 410 namespace { 411 412 template <class ELFT> struct SymtabLink { 413 typename ELFT::SymRange Symbols; 414 StringRef StringTable; 415 const typename ELFT::Shdr *SymTab; 416 }; 417 418 // Returns the linked symbol table, symbols and associated string table for a 419 // given section. 420 template <class ELFT> 421 Expected<SymtabLink<ELFT>> getLinkAsSymtab(const ELFFile<ELFT> &Obj, 422 const typename ELFT::Shdr &Sec, 423 unsigned ExpectedType) { 424 Expected<const typename ELFT::Shdr *> SymtabOrErr = 425 Obj.getSection(Sec.sh_link); 426 if (!SymtabOrErr) 427 return createError("invalid section linked to " + describe(Obj, Sec) + 428 ": " + toString(SymtabOrErr.takeError())); 429 430 if ((*SymtabOrErr)->sh_type != ExpectedType) 431 return createError( 432 "invalid section linked to " + describe(Obj, Sec) + ": expected " + 433 object::getELFSectionTypeName(Obj.getHeader().e_machine, ExpectedType) + 434 ", but got " + 435 object::getELFSectionTypeName(Obj.getHeader().e_machine, 436 (*SymtabOrErr)->sh_type)); 437 438 Expected<StringRef> StrTabOrErr = Obj.getLinkAsStrtab(**SymtabOrErr); 439 if (!StrTabOrErr) 440 return createError( 441 "can't get a string table for the symbol table linked to " + 442 describe(Obj, Sec) + ": " + toString(StrTabOrErr.takeError())); 443 444 Expected<typename ELFT::SymRange> SymsOrErr = Obj.symbols(*SymtabOrErr); 445 if (!SymsOrErr) 446 return createError("unable to read symbols from the " + describe(Obj, Sec) + 447 ": " + toString(SymsOrErr.takeError())); 448 449 return SymtabLink<ELFT>{*SymsOrErr, *StrTabOrErr, *SymtabOrErr}; 450 } 451 452 } // namespace 453 454 template <class ELFT> 455 Expected<ArrayRef<typename ELFT::Versym>> 456 ELFDumper<ELFT>::getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab, 457 StringRef *StrTab, 458 const Elf_Shdr **SymTabSec) const { 459 assert((!SymTab && !StrTab && !SymTabSec) || (SymTab && StrTab && SymTabSec)); 460 if (reinterpret_cast<uintptr_t>(Obj.base() + Sec.sh_offset) % 461 sizeof(uint16_t) != 462 0) 463 return createError("the " + describe(Sec) + " is misaligned"); 464 465 Expected<ArrayRef<Elf_Versym>> VersionsOrErr = 466 Obj.template getSectionContentsAsArray<Elf_Versym>(Sec); 467 if (!VersionsOrErr) 468 return createError("cannot read content of " + describe(Sec) + ": " + 469 toString(VersionsOrErr.takeError())); 470 471 Expected<SymtabLink<ELFT>> SymTabOrErr = 472 getLinkAsSymtab(Obj, Sec, SHT_DYNSYM); 473 if (!SymTabOrErr) { 474 reportUniqueWarning(SymTabOrErr.takeError()); 475 return *VersionsOrErr; 476 } 477 478 if (SymTabOrErr->Symbols.size() != VersionsOrErr->size()) 479 reportUniqueWarning(describe(Sec) + ": the number of entries (" + 480 Twine(VersionsOrErr->size()) + 481 ") does not match the number of symbols (" + 482 Twine(SymTabOrErr->Symbols.size()) + 483 ") in the symbol table with index " + 484 Twine(Sec.sh_link)); 485 486 if (SymTab) { 487 *SymTab = SymTabOrErr->Symbols; 488 *StrTab = SymTabOrErr->StringTable; 489 *SymTabSec = SymTabOrErr->SymTab; 490 } 491 return *VersionsOrErr; 492 } 493 494 template <class ELFT> 495 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 496 Optional<StringRef> StrTable; 497 size_t Entries = 0; 498 Elf_Sym_Range Syms(nullptr, nullptr); 499 const Elf_Shdr *SymtabSec = IsDynamic ? DotDynsymSec : DotSymtabSec; 500 501 if (IsDynamic) { 502 StrTable = DynamicStringTable; 503 Syms = dynamic_symbols(); 504 Entries = Syms.size(); 505 } else if (DotSymtabSec) { 506 if (Expected<StringRef> StrTableOrErr = 507 Obj.getStringTableForSymtab(*DotSymtabSec)) 508 StrTable = *StrTableOrErr; 509 else 510 reportUniqueWarning( 511 "unable to get the string table for the SHT_SYMTAB section: " + 512 toString(StrTableOrErr.takeError())); 513 514 if (Expected<Elf_Sym_Range> SymsOrErr = Obj.symbols(DotSymtabSec)) 515 Syms = *SymsOrErr; 516 else 517 reportUniqueWarning( 518 "unable to read symbols from the SHT_SYMTAB section: " + 519 toString(SymsOrErr.takeError())); 520 Entries = DotSymtabSec->getEntityCount(); 521 } 522 if (Syms.empty()) 523 return; 524 525 // The st_other field has 2 logical parts. The first two bits hold the symbol 526 // visibility (STV_*) and the remainder hold other platform-specific values. 527 bool NonVisibilityBitsUsed = 528 llvm::any_of(Syms, [](const Elf_Sym &S) { return S.st_other & ~0x3; }); 529 530 DataRegion<Elf_Word> ShndxTable = 531 IsDynamic ? DataRegion<Elf_Word>( 532 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, 533 this->getElfObject().getELFFile().end()) 534 : DataRegion<Elf_Word>(this->getShndxTable(SymtabSec)); 535 536 printSymtabMessage(SymtabSec, Entries, NonVisibilityBitsUsed); 537 for (const Elf_Sym &Sym : Syms) 538 printSymbol(Sym, &Sym - Syms.begin(), ShndxTable, StrTable, IsDynamic, 539 NonVisibilityBitsUsed); 540 } 541 542 template <typename ELFT> class GNUELFDumper : public ELFDumper<ELFT> { 543 formatted_raw_ostream &OS; 544 545 public: 546 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 547 548 GNUELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer) 549 : ELFDumper<ELFT>(ObjF, Writer), 550 OS(static_cast<formatted_raw_ostream &>(Writer.getOStream())) { 551 assert(&this->W.getOStream() == &llvm::fouts()); 552 } 553 554 void printFileSummary(StringRef FileStr, ObjectFile &Obj, 555 ArrayRef<std::string> InputFilenames, 556 const Archive *A) override; 557 void printFileHeaders() override; 558 void printGroupSections() override; 559 void printRelocations() override; 560 void printSectionHeaders() override; 561 void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; 562 void printHashSymbols() override; 563 void printSectionDetails() override; 564 void printDependentLibs() override; 565 void printDynamicTable() override; 566 void printDynamicRelocations() override; 567 void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset, 568 bool NonVisibilityBitsUsed) const override; 569 void printProgramHeaders(bool PrintProgramHeaders, 570 cl::boolOrDefault PrintSectionMapping) override; 571 void printVersionSymbolSection(const Elf_Shdr *Sec) override; 572 void printVersionDefinitionSection(const Elf_Shdr *Sec) override; 573 void printVersionDependencySection(const Elf_Shdr *Sec) override; 574 void printHashHistograms() override; 575 void printCGProfile() override; 576 void printBBAddrMaps() override; 577 void printAddrsig() override; 578 void printNotes() override; 579 void printELFLinkerOptions() override; 580 void printStackSizes() override; 581 582 private: 583 void printHashHistogram(const Elf_Hash &HashTable); 584 void printGnuHashHistogram(const Elf_GnuHash &GnuHashTable); 585 void printHashTableSymbols(const Elf_Hash &HashTable); 586 void printGnuHashTableSymbols(const Elf_GnuHash &GnuHashTable); 587 588 struct Field { 589 std::string Str; 590 unsigned Column; 591 592 Field(StringRef S, unsigned Col) : Str(std::string(S)), Column(Col) {} 593 Field(unsigned Col) : Column(Col) {} 594 }; 595 596 template <typename T, typename TEnum> 597 std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues, 598 TEnum EnumMask1 = {}, TEnum EnumMask2 = {}, 599 TEnum EnumMask3 = {}) const { 600 std::string Str; 601 for (const EnumEntry<TEnum> &Flag : EnumValues) { 602 if (Flag.Value == 0) 603 continue; 604 605 TEnum EnumMask{}; 606 if (Flag.Value & EnumMask1) 607 EnumMask = EnumMask1; 608 else if (Flag.Value & EnumMask2) 609 EnumMask = EnumMask2; 610 else if (Flag.Value & EnumMask3) 611 EnumMask = EnumMask3; 612 bool IsEnum = (Flag.Value & EnumMask) != 0; 613 if ((!IsEnum && (Value & Flag.Value) == Flag.Value) || 614 (IsEnum && (Value & EnumMask) == Flag.Value)) { 615 if (!Str.empty()) 616 Str += ", "; 617 Str += Flag.AltName; 618 } 619 } 620 return Str; 621 } 622 623 formatted_raw_ostream &printField(struct Field F) const { 624 if (F.Column != 0) 625 OS.PadToColumn(F.Column); 626 OS << F.Str; 627 OS.flush(); 628 return OS; 629 } 630 void printHashedSymbol(const Elf_Sym *Sym, unsigned SymIndex, 631 DataRegion<Elf_Word> ShndxTable, StringRef StrTable, 632 uint32_t Bucket); 633 void printRelrReloc(const Elf_Relr &R) override; 634 void printRelRelaReloc(const Relocation<ELFT> &R, 635 const RelSymbol<ELFT> &RelSym) override; 636 void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, 637 DataRegion<Elf_Word> ShndxTable, 638 Optional<StringRef> StrTable, bool IsDynamic, 639 bool NonVisibilityBitsUsed) const override; 640 void printDynamicRelocHeader(unsigned Type, StringRef Name, 641 const DynRegionInfo &Reg) override; 642 643 std::string getSymbolSectionNdx(const Elf_Sym &Symbol, unsigned SymIndex, 644 DataRegion<Elf_Word> ShndxTable) const; 645 void printProgramHeaders() override; 646 void printSectionMapping() override; 647 void printGNUVersionSectionProlog(const typename ELFT::Shdr &Sec, 648 const Twine &Label, unsigned EntriesNum); 649 650 void printStackSizeEntry(uint64_t Size, 651 ArrayRef<std::string> FuncNames) override; 652 653 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 654 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 655 void printMipsABIFlags() override; 656 }; 657 658 template <typename ELFT> class LLVMELFDumper : public ELFDumper<ELFT> { 659 public: 660 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 661 662 LLVMELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer) 663 : ELFDumper<ELFT>(ObjF, Writer), W(Writer) {} 664 665 void printFileHeaders() override; 666 void printGroupSections() override; 667 void printRelocations() override; 668 void printSectionHeaders() override; 669 void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; 670 void printDependentLibs() override; 671 void printDynamicTable() override; 672 void printDynamicRelocations() override; 673 void printProgramHeaders(bool PrintProgramHeaders, 674 cl::boolOrDefault PrintSectionMapping) override; 675 void printVersionSymbolSection(const Elf_Shdr *Sec) override; 676 void printVersionDefinitionSection(const Elf_Shdr *Sec) override; 677 void printVersionDependencySection(const Elf_Shdr *Sec) override; 678 void printHashHistograms() override; 679 void printCGProfile() override; 680 void printBBAddrMaps() override; 681 void printAddrsig() override; 682 void printNotes() override; 683 void printELFLinkerOptions() override; 684 void printStackSizes() override; 685 686 private: 687 void printRelrReloc(const Elf_Relr &R) override; 688 void printRelRelaReloc(const Relocation<ELFT> &R, 689 const RelSymbol<ELFT> &RelSym) override; 690 691 void printSymbolSection(const Elf_Sym &Symbol, unsigned SymIndex, 692 DataRegion<Elf_Word> ShndxTable) const; 693 void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, 694 DataRegion<Elf_Word> ShndxTable, 695 Optional<StringRef> StrTable, bool IsDynamic, 696 bool /*NonVisibilityBitsUsed*/) const override; 697 void printProgramHeaders() override; 698 void printSectionMapping() override {} 699 void printStackSizeEntry(uint64_t Size, 700 ArrayRef<std::string> FuncNames) override; 701 702 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 703 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 704 void printMipsABIFlags() override; 705 706 protected: 707 ScopedPrinter &W; 708 }; 709 710 // JSONELFDumper shares most of the same implementation as LLVMELFDumper except 711 // it uses a JSONScopedPrinter. 712 template <typename ELFT> class JSONELFDumper : public LLVMELFDumper<ELFT> { 713 public: 714 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 715 716 JSONELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer) 717 : LLVMELFDumper<ELFT>(ObjF, Writer) {} 718 719 void printFileSummary(StringRef FileStr, ObjectFile &Obj, 720 ArrayRef<std::string> InputFilenames, 721 const Archive *A) override; 722 723 private: 724 std::unique_ptr<DictScope> FileScope; 725 }; 726 727 } // end anonymous namespace 728 729 namespace llvm { 730 731 template <class ELFT> 732 static std::unique_ptr<ObjDumper> 733 createELFDumper(const ELFObjectFile<ELFT> &Obj, ScopedPrinter &Writer) { 734 if (opts::Output == opts::GNU) 735 return std::make_unique<GNUELFDumper<ELFT>>(Obj, Writer); 736 else if (opts::Output == opts::JSON) 737 return std::make_unique<JSONELFDumper<ELFT>>(Obj, Writer); 738 return std::make_unique<LLVMELFDumper<ELFT>>(Obj, Writer); 739 } 740 741 std::unique_ptr<ObjDumper> createELFDumper(const object::ELFObjectFileBase &Obj, 742 ScopedPrinter &Writer) { 743 // Little-endian 32-bit 744 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(&Obj)) 745 return createELFDumper(*ELFObj, Writer); 746 747 // Big-endian 32-bit 748 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(&Obj)) 749 return createELFDumper(*ELFObj, Writer); 750 751 // Little-endian 64-bit 752 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(&Obj)) 753 return createELFDumper(*ELFObj, Writer); 754 755 // Big-endian 64-bit 756 return createELFDumper(*cast<ELF64BEObjectFile>(&Obj), Writer); 757 } 758 759 } // end namespace llvm 760 761 template <class ELFT> 762 Expected<SmallVector<Optional<VersionEntry>, 0> *> 763 ELFDumper<ELFT>::getVersionMap() const { 764 // If the VersionMap has already been loaded or if there is no dynamic symtab 765 // or version table, there is nothing to do. 766 if (!VersionMap.empty() || !DynSymRegion || !SymbolVersionSection) 767 return &VersionMap; 768 769 Expected<SmallVector<Optional<VersionEntry>, 0>> MapOrErr = 770 Obj.loadVersionMap(SymbolVersionNeedSection, SymbolVersionDefSection); 771 if (MapOrErr) 772 VersionMap = *MapOrErr; 773 else 774 return MapOrErr.takeError(); 775 776 return &VersionMap; 777 } 778 779 template <typename ELFT> 780 Expected<StringRef> ELFDumper<ELFT>::getSymbolVersion(const Elf_Sym &Sym, 781 bool &IsDefault) const { 782 // This is a dynamic symbol. Look in the GNU symbol version table. 783 if (!SymbolVersionSection) { 784 // No version table. 785 IsDefault = false; 786 return ""; 787 } 788 789 assert(DynSymRegion && "DynSymRegion has not been initialised"); 790 // Determine the position in the symbol table of this entry. 791 size_t EntryIndex = (reinterpret_cast<uintptr_t>(&Sym) - 792 reinterpret_cast<uintptr_t>(DynSymRegion->Addr)) / 793 sizeof(Elf_Sym); 794 795 // Get the corresponding version index entry. 796 Expected<const Elf_Versym *> EntryOrErr = 797 Obj.template getEntry<Elf_Versym>(*SymbolVersionSection, EntryIndex); 798 if (!EntryOrErr) 799 return EntryOrErr.takeError(); 800 801 unsigned Version = (*EntryOrErr)->vs_index; 802 if (Version == VER_NDX_LOCAL || Version == VER_NDX_GLOBAL) { 803 IsDefault = false; 804 return ""; 805 } 806 807 Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr = 808 getVersionMap(); 809 if (!MapOrErr) 810 return MapOrErr.takeError(); 811 812 return Obj.getSymbolVersionByIndex(Version, IsDefault, **MapOrErr, 813 Sym.st_shndx == ELF::SHN_UNDEF); 814 } 815 816 template <typename ELFT> 817 Expected<RelSymbol<ELFT>> 818 ELFDumper<ELFT>::getRelocationTarget(const Relocation<ELFT> &R, 819 const Elf_Shdr *SymTab) const { 820 if (R.Symbol == 0) 821 return RelSymbol<ELFT>(nullptr, ""); 822 823 Expected<const Elf_Sym *> SymOrErr = 824 Obj.template getEntry<Elf_Sym>(*SymTab, R.Symbol); 825 if (!SymOrErr) 826 return createError("unable to read an entry with index " + Twine(R.Symbol) + 827 " from " + describe(*SymTab) + ": " + 828 toString(SymOrErr.takeError())); 829 const Elf_Sym *Sym = *SymOrErr; 830 if (!Sym) 831 return RelSymbol<ELFT>(nullptr, ""); 832 833 Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(*SymTab); 834 if (!StrTableOrErr) 835 return StrTableOrErr.takeError(); 836 837 const Elf_Sym *FirstSym = 838 cantFail(Obj.template getEntry<Elf_Sym>(*SymTab, 0)); 839 std::string SymbolName = 840 getFullSymbolName(*Sym, Sym - FirstSym, getShndxTable(SymTab), 841 *StrTableOrErr, SymTab->sh_type == SHT_DYNSYM); 842 return RelSymbol<ELFT>(Sym, SymbolName); 843 } 844 845 template <typename ELFT> 846 ArrayRef<typename ELFT::Word> 847 ELFDumper<ELFT>::getShndxTable(const Elf_Shdr *Symtab) const { 848 if (Symtab) { 849 auto It = ShndxTables.find(Symtab); 850 if (It != ShndxTables.end()) 851 return It->second; 852 } 853 return {}; 854 } 855 856 static std::string maybeDemangle(StringRef Name) { 857 return opts::Demangle ? demangle(std::string(Name)) : Name.str(); 858 } 859 860 template <typename ELFT> 861 std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const { 862 auto Warn = [&](Error E) -> std::string { 863 reportUniqueWarning("unable to read the name of symbol with index " + 864 Twine(Index) + ": " + toString(std::move(E))); 865 return "<?>"; 866 }; 867 868 Expected<const typename ELFT::Sym *> SymOrErr = 869 Obj.getSymbol(DotSymtabSec, Index); 870 if (!SymOrErr) 871 return Warn(SymOrErr.takeError()); 872 873 Expected<StringRef> StrTabOrErr = Obj.getStringTableForSymtab(*DotSymtabSec); 874 if (!StrTabOrErr) 875 return Warn(StrTabOrErr.takeError()); 876 877 Expected<StringRef> NameOrErr = (*SymOrErr)->getName(*StrTabOrErr); 878 if (!NameOrErr) 879 return Warn(NameOrErr.takeError()); 880 return maybeDemangle(*NameOrErr); 881 } 882 883 template <typename ELFT> 884 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym &Symbol, 885 unsigned SymIndex, 886 DataRegion<Elf_Word> ShndxTable, 887 Optional<StringRef> StrTable, 888 bool IsDynamic) const { 889 if (!StrTable) 890 return "<?>"; 891 892 std::string SymbolName; 893 if (Expected<StringRef> NameOrErr = Symbol.getName(*StrTable)) { 894 SymbolName = maybeDemangle(*NameOrErr); 895 } else { 896 reportUniqueWarning(NameOrErr.takeError()); 897 return "<?>"; 898 } 899 900 if (SymbolName.empty() && Symbol.getType() == ELF::STT_SECTION) { 901 Expected<unsigned> SectionIndex = 902 getSymbolSectionIndex(Symbol, SymIndex, ShndxTable); 903 if (!SectionIndex) { 904 reportUniqueWarning(SectionIndex.takeError()); 905 return "<?>"; 906 } 907 Expected<StringRef> NameOrErr = getSymbolSectionName(Symbol, *SectionIndex); 908 if (!NameOrErr) { 909 reportUniqueWarning(NameOrErr.takeError()); 910 return ("<section " + Twine(*SectionIndex) + ">").str(); 911 } 912 return std::string(*NameOrErr); 913 } 914 915 if (!IsDynamic) 916 return SymbolName; 917 918 bool IsDefault; 919 Expected<StringRef> VersionOrErr = getSymbolVersion(Symbol, IsDefault); 920 if (!VersionOrErr) { 921 reportUniqueWarning(VersionOrErr.takeError()); 922 return SymbolName + "@<corrupt>"; 923 } 924 925 if (!VersionOrErr->empty()) { 926 SymbolName += (IsDefault ? "@@" : "@"); 927 SymbolName += *VersionOrErr; 928 } 929 return SymbolName; 930 } 931 932 template <typename ELFT> 933 Expected<unsigned> 934 ELFDumper<ELFT>::getSymbolSectionIndex(const Elf_Sym &Symbol, unsigned SymIndex, 935 DataRegion<Elf_Word> ShndxTable) const { 936 unsigned Ndx = Symbol.st_shndx; 937 if (Ndx == SHN_XINDEX) 938 return object::getExtendedSymbolTableIndex<ELFT>(Symbol, SymIndex, 939 ShndxTable); 940 if (Ndx != SHN_UNDEF && Ndx < SHN_LORESERVE) 941 return Ndx; 942 943 auto CreateErr = [&](const Twine &Name, Optional<unsigned> Offset = None) { 944 std::string Desc; 945 if (Offset) 946 Desc = (Name + "+0x" + Twine::utohexstr(*Offset)).str(); 947 else 948 Desc = Name.str(); 949 return createError( 950 "unable to get section index for symbol with st_shndx = 0x" + 951 Twine::utohexstr(Ndx) + " (" + Desc + ")"); 952 }; 953 954 if (Ndx >= ELF::SHN_LOPROC && Ndx <= ELF::SHN_HIPROC) 955 return CreateErr("SHN_LOPROC", Ndx - ELF::SHN_LOPROC); 956 if (Ndx >= ELF::SHN_LOOS && Ndx <= ELF::SHN_HIOS) 957 return CreateErr("SHN_LOOS", Ndx - ELF::SHN_LOOS); 958 if (Ndx == ELF::SHN_UNDEF) 959 return CreateErr("SHN_UNDEF"); 960 if (Ndx == ELF::SHN_ABS) 961 return CreateErr("SHN_ABS"); 962 if (Ndx == ELF::SHN_COMMON) 963 return CreateErr("SHN_COMMON"); 964 return CreateErr("SHN_LORESERVE", Ndx - SHN_LORESERVE); 965 } 966 967 template <typename ELFT> 968 Expected<StringRef> 969 ELFDumper<ELFT>::getSymbolSectionName(const Elf_Sym &Symbol, 970 unsigned SectionIndex) const { 971 Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(SectionIndex); 972 if (!SecOrErr) 973 return SecOrErr.takeError(); 974 return Obj.getSectionName(**SecOrErr); 975 } 976 977 template <class ELFO> 978 static const typename ELFO::Elf_Shdr * 979 findNotEmptySectionByAddress(const ELFO &Obj, StringRef FileName, 980 uint64_t Addr) { 981 for (const typename ELFO::Elf_Shdr &Shdr : cantFail(Obj.sections())) 982 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 983 return &Shdr; 984 return nullptr; 985 } 986 987 const EnumEntry<unsigned> ElfClass[] = { 988 {"None", "none", ELF::ELFCLASSNONE}, 989 {"32-bit", "ELF32", ELF::ELFCLASS32}, 990 {"64-bit", "ELF64", ELF::ELFCLASS64}, 991 }; 992 993 const EnumEntry<unsigned> ElfDataEncoding[] = { 994 {"None", "none", ELF::ELFDATANONE}, 995 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 996 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 997 }; 998 999 const EnumEntry<unsigned> ElfObjectFileType[] = { 1000 {"None", "NONE (none)", ELF::ET_NONE}, 1001 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 1002 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 1003 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 1004 {"Core", "CORE (Core file)", ELF::ET_CORE}, 1005 }; 1006 1007 const EnumEntry<unsigned> ElfOSABI[] = { 1008 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 1009 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 1010 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 1011 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 1012 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 1013 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 1014 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 1015 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 1016 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 1017 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 1018 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 1019 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 1020 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 1021 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 1022 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 1023 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 1024 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 1025 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 1026 }; 1027 1028 const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 1029 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 1030 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 1031 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 1032 }; 1033 1034 const EnumEntry<unsigned> ARMElfOSABI[] = { 1035 {"ARM", "ARM", ELF::ELFOSABI_ARM} 1036 }; 1037 1038 const EnumEntry<unsigned> C6000ElfOSABI[] = { 1039 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 1040 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 1041 }; 1042 1043 const EnumEntry<unsigned> ElfMachineType[] = { 1044 ENUM_ENT(EM_NONE, "None"), 1045 ENUM_ENT(EM_M32, "WE32100"), 1046 ENUM_ENT(EM_SPARC, "Sparc"), 1047 ENUM_ENT(EM_386, "Intel 80386"), 1048 ENUM_ENT(EM_68K, "MC68000"), 1049 ENUM_ENT(EM_88K, "MC88000"), 1050 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 1051 ENUM_ENT(EM_860, "Intel 80860"), 1052 ENUM_ENT(EM_MIPS, "MIPS R3000"), 1053 ENUM_ENT(EM_S370, "IBM System/370"), 1054 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 1055 ENUM_ENT(EM_PARISC, "HPPA"), 1056 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 1057 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 1058 ENUM_ENT(EM_960, "Intel 80960"), 1059 ENUM_ENT(EM_PPC, "PowerPC"), 1060 ENUM_ENT(EM_PPC64, "PowerPC64"), 1061 ENUM_ENT(EM_S390, "IBM S/390"), 1062 ENUM_ENT(EM_SPU, "SPU"), 1063 ENUM_ENT(EM_V800, "NEC V800 series"), 1064 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 1065 ENUM_ENT(EM_RH32, "TRW RH-32"), 1066 ENUM_ENT(EM_RCE, "Motorola RCE"), 1067 ENUM_ENT(EM_ARM, "ARM"), 1068 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 1069 ENUM_ENT(EM_SH, "Hitachi SH"), 1070 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 1071 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 1072 ENUM_ENT(EM_ARC, "ARC"), 1073 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 1074 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 1075 ENUM_ENT(EM_H8S, "Hitachi H8S"), 1076 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 1077 ENUM_ENT(EM_IA_64, "Intel IA-64"), 1078 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 1079 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 1080 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 1081 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 1082 ENUM_ENT(EM_PCP, "Siemens PCP"), 1083 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 1084 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 1085 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 1086 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 1087 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 1088 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 1089 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 1090 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 1091 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 1092 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 1093 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 1094 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 1095 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 1096 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 1097 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 1098 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 1099 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 1100 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 1101 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 1102 ENUM_ENT(EM_VAX, "Digital VAX"), 1103 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 1104 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 1105 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 1106 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 1107 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 1108 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 1109 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 1110 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 1111 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 1112 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 1113 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 1114 ENUM_ENT(EM_V850, "NEC v850"), 1115 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 1116 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 1117 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 1118 ENUM_ENT(EM_PJ, "picoJava"), 1119 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 1120 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 1121 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 1122 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 1123 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 1124 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 1125 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 1126 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 1127 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 1128 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 1129 ENUM_ENT(EM_MAX, "MAX Processor"), 1130 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 1131 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 1132 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 1133 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 1134 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 1135 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 1136 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 1137 ENUM_ENT(EM_UNICORE, "Unicore"), 1138 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 1139 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 1140 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 1141 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 1142 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 1143 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 1144 ENUM_ENT(EM_M16C, "Renesas M16C"), 1145 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 1146 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 1147 ENUM_ENT(EM_M32C, "Renesas M32C"), 1148 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 1149 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 1150 ENUM_ENT(EM_SHARC, "EM_SHARC"), 1151 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 1152 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 1153 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 1154 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 1155 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 1156 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 1157 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 1158 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 1159 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 1160 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 1161 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 1162 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 1163 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 1164 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 1165 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 1166 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 1167 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 1168 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 1169 // FIXME: Following EM_ECOG1X definitions is dead code since EM_ECOG1X has 1170 // an identical number to EM_ECOG1. 1171 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 1172 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 1173 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 1174 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 1175 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 1176 ENUM_ENT(EM_RX, "Renesas RX"), 1177 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 1178 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 1179 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 1180 ENUM_ENT(EM_CR16, "National Semiconductor CompactRISC 16-bit processor"), 1181 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 1182 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 1183 ENUM_ENT(EM_L10M, "EM_L10M"), 1184 ENUM_ENT(EM_K10M, "EM_K10M"), 1185 ENUM_ENT(EM_AARCH64, "AArch64"), 1186 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 1187 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 1188 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 1189 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 1190 ENUM_ENT(EM_MICROBLAZE, "Xilinx MicroBlaze 32-bit RISC soft processor core"), 1191 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 1192 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 1193 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 1194 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 1195 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 1196 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 1197 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 1198 ENUM_ENT(EM_RL78, "Renesas RL78"), 1199 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 1200 ENUM_ENT(EM_78KOR, "EM_78KOR"), 1201 ENUM_ENT(EM_56800EX, "EM_56800EX"), 1202 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 1203 ENUM_ENT(EM_RISCV, "RISC-V"), 1204 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1205 ENUM_ENT(EM_BPF, "EM_BPF"), 1206 ENUM_ENT(EM_VE, "NEC SX-Aurora Vector Engine"), 1207 ENUM_ENT(EM_LOONGARCH, "LoongArch"), 1208 }; 1209 1210 const EnumEntry<unsigned> ElfSymbolBindings[] = { 1211 {"Local", "LOCAL", ELF::STB_LOCAL}, 1212 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1213 {"Weak", "WEAK", ELF::STB_WEAK}, 1214 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1215 1216 const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1217 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1218 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1219 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1220 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1221 1222 const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1223 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1224 }; 1225 1226 static const char *getGroupType(uint32_t Flag) { 1227 if (Flag & ELF::GRP_COMDAT) 1228 return "COMDAT"; 1229 else 1230 return "(unknown)"; 1231 } 1232 1233 const EnumEntry<unsigned> ElfSectionFlags[] = { 1234 ENUM_ENT(SHF_WRITE, "W"), 1235 ENUM_ENT(SHF_ALLOC, "A"), 1236 ENUM_ENT(SHF_EXECINSTR, "X"), 1237 ENUM_ENT(SHF_MERGE, "M"), 1238 ENUM_ENT(SHF_STRINGS, "S"), 1239 ENUM_ENT(SHF_INFO_LINK, "I"), 1240 ENUM_ENT(SHF_LINK_ORDER, "L"), 1241 ENUM_ENT(SHF_OS_NONCONFORMING, "O"), 1242 ENUM_ENT(SHF_GROUP, "G"), 1243 ENUM_ENT(SHF_TLS, "T"), 1244 ENUM_ENT(SHF_COMPRESSED, "C"), 1245 ENUM_ENT(SHF_EXCLUDE, "E"), 1246 }; 1247 1248 const EnumEntry<unsigned> ElfGNUSectionFlags[] = { 1249 ENUM_ENT(SHF_GNU_RETAIN, "R") 1250 }; 1251 1252 const EnumEntry<unsigned> ElfSolarisSectionFlags[] = { 1253 ENUM_ENT(SHF_SUNW_NODISCARD, "R") 1254 }; 1255 1256 const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1257 ENUM_ENT(XCORE_SHF_CP_SECTION, ""), 1258 ENUM_ENT(XCORE_SHF_DP_SECTION, "") 1259 }; 1260 1261 const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1262 ENUM_ENT(SHF_ARM_PURECODE, "y") 1263 }; 1264 1265 const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1266 ENUM_ENT(SHF_HEX_GPREL, "") 1267 }; 1268 1269 const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1270 ENUM_ENT(SHF_MIPS_NODUPES, ""), 1271 ENUM_ENT(SHF_MIPS_NAMES, ""), 1272 ENUM_ENT(SHF_MIPS_LOCAL, ""), 1273 ENUM_ENT(SHF_MIPS_NOSTRIP, ""), 1274 ENUM_ENT(SHF_MIPS_GPREL, ""), 1275 ENUM_ENT(SHF_MIPS_MERGE, ""), 1276 ENUM_ENT(SHF_MIPS_ADDR, ""), 1277 ENUM_ENT(SHF_MIPS_STRING, "") 1278 }; 1279 1280 const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1281 ENUM_ENT(SHF_X86_64_LARGE, "l") 1282 }; 1283 1284 static std::vector<EnumEntry<unsigned>> 1285 getSectionFlagsForTarget(unsigned EOSAbi, unsigned EMachine) { 1286 std::vector<EnumEntry<unsigned>> Ret(std::begin(ElfSectionFlags), 1287 std::end(ElfSectionFlags)); 1288 switch (EOSAbi) { 1289 case ELFOSABI_SOLARIS: 1290 Ret.insert(Ret.end(), std::begin(ElfSolarisSectionFlags), 1291 std::end(ElfSolarisSectionFlags)); 1292 break; 1293 default: 1294 Ret.insert(Ret.end(), std::begin(ElfGNUSectionFlags), 1295 std::end(ElfGNUSectionFlags)); 1296 break; 1297 } 1298 switch (EMachine) { 1299 case EM_ARM: 1300 Ret.insert(Ret.end(), std::begin(ElfARMSectionFlags), 1301 std::end(ElfARMSectionFlags)); 1302 break; 1303 case EM_HEXAGON: 1304 Ret.insert(Ret.end(), std::begin(ElfHexagonSectionFlags), 1305 std::end(ElfHexagonSectionFlags)); 1306 break; 1307 case EM_MIPS: 1308 Ret.insert(Ret.end(), std::begin(ElfMipsSectionFlags), 1309 std::end(ElfMipsSectionFlags)); 1310 break; 1311 case EM_X86_64: 1312 Ret.insert(Ret.end(), std::begin(ElfX86_64SectionFlags), 1313 std::end(ElfX86_64SectionFlags)); 1314 break; 1315 case EM_XCORE: 1316 Ret.insert(Ret.end(), std::begin(ElfXCoreSectionFlags), 1317 std::end(ElfXCoreSectionFlags)); 1318 break; 1319 default: 1320 break; 1321 } 1322 return Ret; 1323 } 1324 1325 static std::string getGNUFlags(unsigned EOSAbi, unsigned EMachine, 1326 uint64_t Flags) { 1327 // Here we are trying to build the flags string in the same way as GNU does. 1328 // It is not that straightforward. Imagine we have sh_flags == 0x90000000. 1329 // SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000. 1330 // GNU readelf will not print "E" or "Ep" in this case, but will print just 1331 // "p". It only will print "E" when no other processor flag is set. 1332 std::string Str; 1333 bool HasUnknownFlag = false; 1334 bool HasOSFlag = false; 1335 bool HasProcFlag = false; 1336 std::vector<EnumEntry<unsigned>> FlagsList = 1337 getSectionFlagsForTarget(EOSAbi, EMachine); 1338 while (Flags) { 1339 // Take the least significant bit as a flag. 1340 uint64_t Flag = Flags & -Flags; 1341 Flags -= Flag; 1342 1343 // Find the flag in the known flags list. 1344 auto I = llvm::find_if(FlagsList, [=](const EnumEntry<unsigned> &E) { 1345 // Flags with empty names are not printed in GNU style output. 1346 return E.Value == Flag && !E.AltName.empty(); 1347 }); 1348 if (I != FlagsList.end()) { 1349 Str += I->AltName; 1350 continue; 1351 } 1352 1353 // If we did not find a matching regular flag, then we deal with an OS 1354 // specific flag, processor specific flag or an unknown flag. 1355 if (Flag & ELF::SHF_MASKOS) { 1356 HasOSFlag = true; 1357 Flags &= ~ELF::SHF_MASKOS; 1358 } else if (Flag & ELF::SHF_MASKPROC) { 1359 HasProcFlag = true; 1360 // Mask off all the processor-specific bits. This removes the SHF_EXCLUDE 1361 // bit if set so that it doesn't also get printed. 1362 Flags &= ~ELF::SHF_MASKPROC; 1363 } else { 1364 HasUnknownFlag = true; 1365 } 1366 } 1367 1368 // "o", "p" and "x" are printed last. 1369 if (HasOSFlag) 1370 Str += "o"; 1371 if (HasProcFlag) 1372 Str += "p"; 1373 if (HasUnknownFlag) 1374 Str += "x"; 1375 return Str; 1376 } 1377 1378 static StringRef segmentTypeToString(unsigned Arch, unsigned Type) { 1379 // Check potentially overlapped processor-specific program header type. 1380 switch (Arch) { 1381 case ELF::EM_ARM: 1382 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); } 1383 break; 1384 case ELF::EM_MIPS: 1385 case ELF::EM_MIPS_RS3_LE: 1386 switch (Type) { 1387 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1388 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1389 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1390 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1391 } 1392 break; 1393 } 1394 1395 switch (Type) { 1396 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL); 1397 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD); 1398 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1399 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP); 1400 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE); 1401 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB); 1402 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR); 1403 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS); 1404 1405 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1406 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1407 1408 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1409 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1410 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_PROPERTY); 1411 1412 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1413 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1414 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1415 default: 1416 return ""; 1417 } 1418 } 1419 1420 static std::string getGNUPtType(unsigned Arch, unsigned Type) { 1421 StringRef Seg = segmentTypeToString(Arch, Type); 1422 if (Seg.empty()) 1423 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1424 1425 // E.g. "PT_ARM_EXIDX" -> "EXIDX". 1426 if (Seg.startswith("PT_ARM_")) 1427 return Seg.drop_front(7).str(); 1428 1429 // E.g. "PT_MIPS_REGINFO" -> "REGINFO". 1430 if (Seg.startswith("PT_MIPS_")) 1431 return Seg.drop_front(8).str(); 1432 1433 // E.g. "PT_LOAD" -> "LOAD". 1434 assert(Seg.startswith("PT_")); 1435 return Seg.drop_front(3).str(); 1436 } 1437 1438 const EnumEntry<unsigned> ElfSegmentFlags[] = { 1439 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1440 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1441 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1442 }; 1443 1444 const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1445 ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"), 1446 ENUM_ENT(EF_MIPS_PIC, "pic"), 1447 ENUM_ENT(EF_MIPS_CPIC, "cpic"), 1448 ENUM_ENT(EF_MIPS_ABI2, "abi2"), 1449 ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"), 1450 ENUM_ENT(EF_MIPS_FP64, "fp64"), 1451 ENUM_ENT(EF_MIPS_NAN2008, "nan2008"), 1452 ENUM_ENT(EF_MIPS_ABI_O32, "o32"), 1453 ENUM_ENT(EF_MIPS_ABI_O64, "o64"), 1454 ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"), 1455 ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"), 1456 ENUM_ENT(EF_MIPS_MACH_3900, "3900"), 1457 ENUM_ENT(EF_MIPS_MACH_4010, "4010"), 1458 ENUM_ENT(EF_MIPS_MACH_4100, "4100"), 1459 ENUM_ENT(EF_MIPS_MACH_4650, "4650"), 1460 ENUM_ENT(EF_MIPS_MACH_4120, "4120"), 1461 ENUM_ENT(EF_MIPS_MACH_4111, "4111"), 1462 ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"), 1463 ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"), 1464 ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"), 1465 ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"), 1466 ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"), 1467 ENUM_ENT(EF_MIPS_MACH_5400, "5400"), 1468 ENUM_ENT(EF_MIPS_MACH_5900, "5900"), 1469 ENUM_ENT(EF_MIPS_MACH_5500, "5500"), 1470 ENUM_ENT(EF_MIPS_MACH_9000, "9000"), 1471 ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"), 1472 ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"), 1473 ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"), 1474 ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"), 1475 ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"), 1476 ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"), 1477 ENUM_ENT(EF_MIPS_ARCH_1, "mips1"), 1478 ENUM_ENT(EF_MIPS_ARCH_2, "mips2"), 1479 ENUM_ENT(EF_MIPS_ARCH_3, "mips3"), 1480 ENUM_ENT(EF_MIPS_ARCH_4, "mips4"), 1481 ENUM_ENT(EF_MIPS_ARCH_5, "mips5"), 1482 ENUM_ENT(EF_MIPS_ARCH_32, "mips32"), 1483 ENUM_ENT(EF_MIPS_ARCH_64, "mips64"), 1484 ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"), 1485 ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"), 1486 ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"), 1487 ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6") 1488 }; 1489 1490 const EnumEntry<unsigned> ElfHeaderAMDGPUFlagsABIVersion3[] = { 1491 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), 1492 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), 1493 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), 1494 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), 1495 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), 1496 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), 1497 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), 1498 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), 1499 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), 1500 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), 1501 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), 1502 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), 1503 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), 1504 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), 1505 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), 1506 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), 1507 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), 1508 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), 1509 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), 1510 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX602), 1511 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), 1512 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), 1513 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), 1514 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), 1515 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), 1516 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX705), 1517 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), 1518 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), 1519 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), 1520 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX805), 1521 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), 1522 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), 1523 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), 1524 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904), 1525 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906), 1526 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908), 1527 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909), 1528 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90A), 1529 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90C), 1530 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX940), 1531 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010), 1532 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011), 1533 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012), 1534 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1013), 1535 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1030), 1536 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1031), 1537 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1032), 1538 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1033), 1539 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1034), 1540 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1035), 1541 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1036), 1542 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_V3), 1543 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_V3) 1544 }; 1545 1546 const EnumEntry<unsigned> ElfHeaderAMDGPUFlagsABIVersion4[] = { 1547 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), 1548 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), 1549 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), 1550 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), 1551 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), 1552 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), 1553 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), 1554 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), 1555 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), 1556 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), 1557 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), 1558 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), 1559 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), 1560 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), 1561 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), 1562 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), 1563 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), 1564 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), 1565 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), 1566 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX602), 1567 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), 1568 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), 1569 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), 1570 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), 1571 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), 1572 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX705), 1573 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), 1574 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), 1575 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), 1576 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX805), 1577 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), 1578 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), 1579 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), 1580 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904), 1581 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906), 1582 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908), 1583 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909), 1584 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90A), 1585 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90C), 1586 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX940), 1587 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010), 1588 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011), 1589 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012), 1590 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1013), 1591 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1030), 1592 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1031), 1593 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1032), 1594 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1033), 1595 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1034), 1596 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1035), 1597 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1036), 1598 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_ANY_V4), 1599 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_OFF_V4), 1600 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_XNACK_ON_V4), 1601 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_ANY_V4), 1602 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_OFF_V4), 1603 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_FEATURE_SRAMECC_ON_V4) 1604 }; 1605 1606 const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1607 ENUM_ENT(EF_RISCV_RVC, "RVC"), 1608 ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"), 1609 ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"), 1610 ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"), 1611 ENUM_ENT(EF_RISCV_RVE, "RVE"), 1612 ENUM_ENT(EF_RISCV_TSO, "TSO"), 1613 }; 1614 1615 const EnumEntry<unsigned> ElfHeaderAVRFlags[] = { 1616 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR1), 1617 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR2), 1618 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR25), 1619 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR3), 1620 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR31), 1621 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR35), 1622 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR4), 1623 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR5), 1624 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR51), 1625 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVR6), 1626 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_AVRTINY), 1627 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA1), 1628 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA2), 1629 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA3), 1630 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA4), 1631 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA5), 1632 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA6), 1633 LLVM_READOBJ_ENUM_ENT(ELF, EF_AVR_ARCH_XMEGA7), 1634 ENUM_ENT(EF_AVR_LINKRELAX_PREPARED, "relaxable"), 1635 }; 1636 1637 1638 const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1639 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1640 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1641 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1642 }; 1643 1644 const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1645 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1646 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1647 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1648 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1649 }; 1650 1651 const EnumEntry<unsigned> ElfAArch64SymOtherFlags[] = { 1652 LLVM_READOBJ_ENUM_ENT(ELF, STO_AARCH64_VARIANT_PCS) 1653 }; 1654 1655 const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1656 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1657 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1658 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1659 }; 1660 1661 const EnumEntry<unsigned> ElfRISCVSymOtherFlags[] = { 1662 LLVM_READOBJ_ENUM_ENT(ELF, STO_RISCV_VARIANT_CC)}; 1663 1664 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1665 switch (Odk) { 1666 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1667 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1668 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1669 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1670 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1671 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1672 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1673 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1674 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1675 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1676 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1677 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1678 default: 1679 return "Unknown"; 1680 } 1681 } 1682 1683 template <typename ELFT> 1684 std::pair<const typename ELFT::Phdr *, const typename ELFT::Shdr *> 1685 ELFDumper<ELFT>::findDynamic() { 1686 // Try to locate the PT_DYNAMIC header. 1687 const Elf_Phdr *DynamicPhdr = nullptr; 1688 if (Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = Obj.program_headers()) { 1689 for (const Elf_Phdr &Phdr : *PhdrsOrErr) { 1690 if (Phdr.p_type != ELF::PT_DYNAMIC) 1691 continue; 1692 DynamicPhdr = &Phdr; 1693 break; 1694 } 1695 } else { 1696 reportUniqueWarning( 1697 "unable to read program headers to locate the PT_DYNAMIC segment: " + 1698 toString(PhdrsOrErr.takeError())); 1699 } 1700 1701 // Try to locate the .dynamic section in the sections header table. 1702 const Elf_Shdr *DynamicSec = nullptr; 1703 for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { 1704 if (Sec.sh_type != ELF::SHT_DYNAMIC) 1705 continue; 1706 DynamicSec = &Sec; 1707 break; 1708 } 1709 1710 if (DynamicPhdr && ((DynamicPhdr->p_offset + DynamicPhdr->p_filesz > 1711 ObjF.getMemoryBufferRef().getBufferSize()) || 1712 (DynamicPhdr->p_offset + DynamicPhdr->p_filesz < 1713 DynamicPhdr->p_offset))) { 1714 reportUniqueWarning( 1715 "PT_DYNAMIC segment offset (0x" + 1716 Twine::utohexstr(DynamicPhdr->p_offset) + ") + file size (0x" + 1717 Twine::utohexstr(DynamicPhdr->p_filesz) + 1718 ") exceeds the size of the file (0x" + 1719 Twine::utohexstr(ObjF.getMemoryBufferRef().getBufferSize()) + ")"); 1720 // Don't use the broken dynamic header. 1721 DynamicPhdr = nullptr; 1722 } 1723 1724 if (DynamicPhdr && DynamicSec) { 1725 if (DynamicSec->sh_addr + DynamicSec->sh_size > 1726 DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz || 1727 DynamicSec->sh_addr < DynamicPhdr->p_vaddr) 1728 reportUniqueWarning(describe(*DynamicSec) + 1729 " is not contained within the " 1730 "PT_DYNAMIC segment"); 1731 1732 if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr) 1733 reportUniqueWarning(describe(*DynamicSec) + " is not at the start of " 1734 "PT_DYNAMIC segment"); 1735 } 1736 1737 return std::make_pair(DynamicPhdr, DynamicSec); 1738 } 1739 1740 template <typename ELFT> 1741 void ELFDumper<ELFT>::loadDynamicTable() { 1742 const Elf_Phdr *DynamicPhdr; 1743 const Elf_Shdr *DynamicSec; 1744 std::tie(DynamicPhdr, DynamicSec) = findDynamic(); 1745 if (!DynamicPhdr && !DynamicSec) 1746 return; 1747 1748 DynRegionInfo FromPhdr(ObjF, *this); 1749 bool IsPhdrTableValid = false; 1750 if (DynamicPhdr) { 1751 // Use cantFail(), because p_offset/p_filesz fields of a PT_DYNAMIC are 1752 // validated in findDynamic() and so createDRI() is not expected to fail. 1753 FromPhdr = cantFail(createDRI(DynamicPhdr->p_offset, DynamicPhdr->p_filesz, 1754 sizeof(Elf_Dyn))); 1755 FromPhdr.SizePrintName = "PT_DYNAMIC size"; 1756 FromPhdr.EntSizePrintName = ""; 1757 IsPhdrTableValid = !FromPhdr.template getAsArrayRef<Elf_Dyn>().empty(); 1758 } 1759 1760 // Locate the dynamic table described in a section header. 1761 // Ignore sh_entsize and use the expected value for entry size explicitly. 1762 // This allows us to dump dynamic sections with a broken sh_entsize 1763 // field. 1764 DynRegionInfo FromSec(ObjF, *this); 1765 bool IsSecTableValid = false; 1766 if (DynamicSec) { 1767 Expected<DynRegionInfo> RegOrErr = 1768 createDRI(DynamicSec->sh_offset, DynamicSec->sh_size, sizeof(Elf_Dyn)); 1769 if (RegOrErr) { 1770 FromSec = *RegOrErr; 1771 FromSec.Context = describe(*DynamicSec); 1772 FromSec.EntSizePrintName = ""; 1773 IsSecTableValid = !FromSec.template getAsArrayRef<Elf_Dyn>().empty(); 1774 } else { 1775 reportUniqueWarning("unable to read the dynamic table from " + 1776 describe(*DynamicSec) + ": " + 1777 toString(RegOrErr.takeError())); 1778 } 1779 } 1780 1781 // When we only have information from one of the SHT_DYNAMIC section header or 1782 // PT_DYNAMIC program header, just use that. 1783 if (!DynamicPhdr || !DynamicSec) { 1784 if ((DynamicPhdr && IsPhdrTableValid) || (DynamicSec && IsSecTableValid)) { 1785 DynamicTable = DynamicPhdr ? FromPhdr : FromSec; 1786 parseDynamicTable(); 1787 } else { 1788 reportUniqueWarning("no valid dynamic table was found"); 1789 } 1790 return; 1791 } 1792 1793 // At this point we have tables found from the section header and from the 1794 // dynamic segment. Usually they match, but we have to do sanity checks to 1795 // verify that. 1796 1797 if (FromPhdr.Addr != FromSec.Addr) 1798 reportUniqueWarning("SHT_DYNAMIC section header and PT_DYNAMIC " 1799 "program header disagree about " 1800 "the location of the dynamic table"); 1801 1802 if (!IsPhdrTableValid && !IsSecTableValid) { 1803 reportUniqueWarning("no valid dynamic table was found"); 1804 return; 1805 } 1806 1807 // Information in the PT_DYNAMIC program header has priority over the 1808 // information in a section header. 1809 if (IsPhdrTableValid) { 1810 if (!IsSecTableValid) 1811 reportUniqueWarning( 1812 "SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used"); 1813 DynamicTable = FromPhdr; 1814 } else { 1815 reportUniqueWarning( 1816 "PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used"); 1817 DynamicTable = FromSec; 1818 } 1819 1820 parseDynamicTable(); 1821 } 1822 1823 template <typename ELFT> 1824 ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> &O, 1825 ScopedPrinter &Writer) 1826 : ObjDumper(Writer, O.getFileName()), ObjF(O), Obj(O.getELFFile()), 1827 FileName(O.getFileName()), DynRelRegion(O, *this), 1828 DynRelaRegion(O, *this), DynRelrRegion(O, *this), 1829 DynPLTRelRegion(O, *this), DynSymTabShndxRegion(O, *this), 1830 DynamicTable(O, *this) { 1831 if (!O.IsContentValid()) 1832 return; 1833 1834 typename ELFT::ShdrRange Sections = cantFail(Obj.sections()); 1835 for (const Elf_Shdr &Sec : Sections) { 1836 switch (Sec.sh_type) { 1837 case ELF::SHT_SYMTAB: 1838 if (!DotSymtabSec) 1839 DotSymtabSec = &Sec; 1840 break; 1841 case ELF::SHT_DYNSYM: 1842 if (!DotDynsymSec) 1843 DotDynsymSec = &Sec; 1844 1845 if (!DynSymRegion) { 1846 Expected<DynRegionInfo> RegOrErr = 1847 createDRI(Sec.sh_offset, Sec.sh_size, Sec.sh_entsize); 1848 if (RegOrErr) { 1849 DynSymRegion = *RegOrErr; 1850 DynSymRegion->Context = describe(Sec); 1851 1852 if (Expected<StringRef> E = Obj.getStringTableForSymtab(Sec)) 1853 DynamicStringTable = *E; 1854 else 1855 reportUniqueWarning("unable to get the string table for the " + 1856 describe(Sec) + ": " + toString(E.takeError())); 1857 } else { 1858 reportUniqueWarning("unable to read dynamic symbols from " + 1859 describe(Sec) + ": " + 1860 toString(RegOrErr.takeError())); 1861 } 1862 } 1863 break; 1864 case ELF::SHT_SYMTAB_SHNDX: { 1865 uint32_t SymtabNdx = Sec.sh_link; 1866 if (SymtabNdx >= Sections.size()) { 1867 reportUniqueWarning( 1868 "unable to get the associated symbol table for " + describe(Sec) + 1869 ": sh_link (" + Twine(SymtabNdx) + 1870 ") is greater than or equal to the total number of sections (" + 1871 Twine(Sections.size()) + ")"); 1872 continue; 1873 } 1874 1875 if (Expected<ArrayRef<Elf_Word>> ShndxTableOrErr = 1876 Obj.getSHNDXTable(Sec)) { 1877 if (!ShndxTables.insert({&Sections[SymtabNdx], *ShndxTableOrErr}) 1878 .second) 1879 reportUniqueWarning( 1880 "multiple SHT_SYMTAB_SHNDX sections are linked to " + 1881 describe(Sec)); 1882 } else { 1883 reportUniqueWarning(ShndxTableOrErr.takeError()); 1884 } 1885 break; 1886 } 1887 case ELF::SHT_GNU_versym: 1888 if (!SymbolVersionSection) 1889 SymbolVersionSection = &Sec; 1890 break; 1891 case ELF::SHT_GNU_verdef: 1892 if (!SymbolVersionDefSection) 1893 SymbolVersionDefSection = &Sec; 1894 break; 1895 case ELF::SHT_GNU_verneed: 1896 if (!SymbolVersionNeedSection) 1897 SymbolVersionNeedSection = &Sec; 1898 break; 1899 case ELF::SHT_LLVM_ADDRSIG: 1900 if (!DotAddrsigSec) 1901 DotAddrsigSec = &Sec; 1902 break; 1903 } 1904 } 1905 1906 loadDynamicTable(); 1907 } 1908 1909 template <typename ELFT> void ELFDumper<ELFT>::parseDynamicTable() { 1910 auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * { 1911 auto MappedAddrOrError = Obj.toMappedAddr(VAddr, [&](const Twine &Msg) { 1912 this->reportUniqueWarning(Msg); 1913 return Error::success(); 1914 }); 1915 if (!MappedAddrOrError) { 1916 this->reportUniqueWarning("unable to parse DT_" + 1917 Obj.getDynamicTagAsString(Tag) + ": " + 1918 llvm::toString(MappedAddrOrError.takeError())); 1919 return nullptr; 1920 } 1921 return MappedAddrOrError.get(); 1922 }; 1923 1924 const char *StringTableBegin = nullptr; 1925 uint64_t StringTableSize = 0; 1926 Optional<DynRegionInfo> DynSymFromTable; 1927 for (const Elf_Dyn &Dyn : dynamic_table()) { 1928 switch (Dyn.d_tag) { 1929 case ELF::DT_HASH: 1930 HashTable = reinterpret_cast<const Elf_Hash *>( 1931 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 1932 break; 1933 case ELF::DT_GNU_HASH: 1934 GnuHashTable = reinterpret_cast<const Elf_GnuHash *>( 1935 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 1936 break; 1937 case ELF::DT_STRTAB: 1938 StringTableBegin = reinterpret_cast<const char *>( 1939 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 1940 break; 1941 case ELF::DT_STRSZ: 1942 StringTableSize = Dyn.getVal(); 1943 break; 1944 case ELF::DT_SYMTAB: { 1945 // If we can't map the DT_SYMTAB value to an address (e.g. when there are 1946 // no program headers), we ignore its value. 1947 if (const uint8_t *VA = toMappedAddr(Dyn.getTag(), Dyn.getPtr())) { 1948 DynSymFromTable.emplace(ObjF, *this); 1949 DynSymFromTable->Addr = VA; 1950 DynSymFromTable->EntSize = sizeof(Elf_Sym); 1951 DynSymFromTable->EntSizePrintName = ""; 1952 } 1953 break; 1954 } 1955 case ELF::DT_SYMENT: { 1956 uint64_t Val = Dyn.getVal(); 1957 if (Val != sizeof(Elf_Sym)) 1958 this->reportUniqueWarning("DT_SYMENT value of 0x" + 1959 Twine::utohexstr(Val) + 1960 " is not the size of a symbol (0x" + 1961 Twine::utohexstr(sizeof(Elf_Sym)) + ")"); 1962 break; 1963 } 1964 case ELF::DT_RELA: 1965 DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 1966 break; 1967 case ELF::DT_RELASZ: 1968 DynRelaRegion.Size = Dyn.getVal(); 1969 DynRelaRegion.SizePrintName = "DT_RELASZ value"; 1970 break; 1971 case ELF::DT_RELAENT: 1972 DynRelaRegion.EntSize = Dyn.getVal(); 1973 DynRelaRegion.EntSizePrintName = "DT_RELAENT value"; 1974 break; 1975 case ELF::DT_SONAME: 1976 SONameOffset = Dyn.getVal(); 1977 break; 1978 case ELF::DT_REL: 1979 DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 1980 break; 1981 case ELF::DT_RELSZ: 1982 DynRelRegion.Size = Dyn.getVal(); 1983 DynRelRegion.SizePrintName = "DT_RELSZ value"; 1984 break; 1985 case ELF::DT_RELENT: 1986 DynRelRegion.EntSize = Dyn.getVal(); 1987 DynRelRegion.EntSizePrintName = "DT_RELENT value"; 1988 break; 1989 case ELF::DT_RELR: 1990 case ELF::DT_ANDROID_RELR: 1991 DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 1992 break; 1993 case ELF::DT_RELRSZ: 1994 case ELF::DT_ANDROID_RELRSZ: 1995 DynRelrRegion.Size = Dyn.getVal(); 1996 DynRelrRegion.SizePrintName = Dyn.d_tag == ELF::DT_RELRSZ 1997 ? "DT_RELRSZ value" 1998 : "DT_ANDROID_RELRSZ value"; 1999 break; 2000 case ELF::DT_RELRENT: 2001 case ELF::DT_ANDROID_RELRENT: 2002 DynRelrRegion.EntSize = Dyn.getVal(); 2003 DynRelrRegion.EntSizePrintName = Dyn.d_tag == ELF::DT_RELRENT 2004 ? "DT_RELRENT value" 2005 : "DT_ANDROID_RELRENT value"; 2006 break; 2007 case ELF::DT_PLTREL: 2008 if (Dyn.getVal() == DT_REL) 2009 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 2010 else if (Dyn.getVal() == DT_RELA) 2011 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 2012 else 2013 reportUniqueWarning(Twine("unknown DT_PLTREL value of ") + 2014 Twine((uint64_t)Dyn.getVal())); 2015 DynPLTRelRegion.EntSizePrintName = "PLTREL entry size"; 2016 break; 2017 case ELF::DT_JMPREL: 2018 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2019 break; 2020 case ELF::DT_PLTRELSZ: 2021 DynPLTRelRegion.Size = Dyn.getVal(); 2022 DynPLTRelRegion.SizePrintName = "DT_PLTRELSZ value"; 2023 break; 2024 case ELF::DT_SYMTAB_SHNDX: 2025 DynSymTabShndxRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2026 DynSymTabShndxRegion.EntSize = sizeof(Elf_Word); 2027 break; 2028 } 2029 } 2030 2031 if (StringTableBegin) { 2032 const uint64_t FileSize = Obj.getBufSize(); 2033 const uint64_t Offset = (const uint8_t *)StringTableBegin - Obj.base(); 2034 if (StringTableSize > FileSize - Offset) 2035 reportUniqueWarning( 2036 "the dynamic string table at 0x" + Twine::utohexstr(Offset) + 2037 " goes past the end of the file (0x" + Twine::utohexstr(FileSize) + 2038 ") with DT_STRSZ = 0x" + Twine::utohexstr(StringTableSize)); 2039 else 2040 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 2041 } 2042 2043 const bool IsHashTableSupported = getHashTableEntSize() == 4; 2044 if (DynSymRegion) { 2045 // Often we find the information about the dynamic symbol table 2046 // location in the SHT_DYNSYM section header. However, the value in 2047 // DT_SYMTAB has priority, because it is used by dynamic loaders to 2048 // locate .dynsym at runtime. The location we find in the section header 2049 // and the location we find here should match. 2050 if (DynSymFromTable && DynSymFromTable->Addr != DynSymRegion->Addr) 2051 reportUniqueWarning( 2052 createError("SHT_DYNSYM section header and DT_SYMTAB disagree about " 2053 "the location of the dynamic symbol table")); 2054 2055 // According to the ELF gABI: "The number of symbol table entries should 2056 // equal nchain". Check to see if the DT_HASH hash table nchain value 2057 // conflicts with the number of symbols in the dynamic symbol table 2058 // according to the section header. 2059 if (HashTable && IsHashTableSupported) { 2060 if (DynSymRegion->EntSize == 0) 2061 reportUniqueWarning("SHT_DYNSYM section has sh_entsize == 0"); 2062 else if (HashTable->nchain != DynSymRegion->Size / DynSymRegion->EntSize) 2063 reportUniqueWarning( 2064 "hash table nchain (" + Twine(HashTable->nchain) + 2065 ") differs from symbol count derived from SHT_DYNSYM section " 2066 "header (" + 2067 Twine(DynSymRegion->Size / DynSymRegion->EntSize) + ")"); 2068 } 2069 } 2070 2071 // Delay the creation of the actual dynamic symbol table until now, so that 2072 // checks can always be made against the section header-based properties, 2073 // without worrying about tag order. 2074 if (DynSymFromTable) { 2075 if (!DynSymRegion) { 2076 DynSymRegion = DynSymFromTable; 2077 } else { 2078 DynSymRegion->Addr = DynSymFromTable->Addr; 2079 DynSymRegion->EntSize = DynSymFromTable->EntSize; 2080 DynSymRegion->EntSizePrintName = DynSymFromTable->EntSizePrintName; 2081 } 2082 } 2083 2084 // Derive the dynamic symbol table size from the DT_HASH hash table, if 2085 // present. 2086 if (HashTable && IsHashTableSupported && DynSymRegion) { 2087 const uint64_t FileSize = Obj.getBufSize(); 2088 const uint64_t DerivedSize = 2089 (uint64_t)HashTable->nchain * DynSymRegion->EntSize; 2090 const uint64_t Offset = (const uint8_t *)DynSymRegion->Addr - Obj.base(); 2091 if (DerivedSize > FileSize - Offset) 2092 reportUniqueWarning( 2093 "the size (0x" + Twine::utohexstr(DerivedSize) + 2094 ") of the dynamic symbol table at 0x" + Twine::utohexstr(Offset) + 2095 ", derived from the hash table, goes past the end of the file (0x" + 2096 Twine::utohexstr(FileSize) + ") and will be ignored"); 2097 else 2098 DynSymRegion->Size = HashTable->nchain * DynSymRegion->EntSize; 2099 } 2100 } 2101 2102 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 2103 // Dump version symbol section. 2104 printVersionSymbolSection(SymbolVersionSection); 2105 2106 // Dump version definition section. 2107 printVersionDefinitionSection(SymbolVersionDefSection); 2108 2109 // Dump version dependency section. 2110 printVersionDependencySection(SymbolVersionNeedSection); 2111 } 2112 2113 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 2114 { #enum, prefix##_##enum } 2115 2116 const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 2117 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 2118 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 2119 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 2120 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 2121 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 2122 }; 2123 2124 const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 2125 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 2126 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 2127 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 2128 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 2129 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 2130 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 2131 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 2132 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 2133 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 2134 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 2135 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 2136 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 2137 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 2138 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 2139 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 2140 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 2141 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND), 2142 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 2143 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 2144 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 2145 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 2146 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 2147 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 2148 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 2149 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 2150 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON), 2151 LLVM_READOBJ_DT_FLAG_ENT(DF_1, PIE), 2152 }; 2153 2154 const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 2155 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 2156 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 2157 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 2158 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 2159 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 2160 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 2161 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 2162 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 2163 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 2164 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 2165 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 2166 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 2167 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 2168 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 2169 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 2170 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 2171 }; 2172 2173 #undef LLVM_READOBJ_DT_FLAG_ENT 2174 2175 template <typename T, typename TFlag> 2176 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 2177 SmallVector<EnumEntry<TFlag>, 10> SetFlags; 2178 for (const EnumEntry<TFlag> &Flag : Flags) 2179 if (Flag.Value != 0 && (Value & Flag.Value) == Flag.Value) 2180 SetFlags.push_back(Flag); 2181 2182 for (const EnumEntry<TFlag> &Flag : SetFlags) 2183 OS << Flag.Name << " "; 2184 } 2185 2186 template <class ELFT> 2187 const typename ELFT::Shdr * 2188 ELFDumper<ELFT>::findSectionByName(StringRef Name) const { 2189 for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) { 2190 if (Expected<StringRef> NameOrErr = Obj.getSectionName(Shdr)) { 2191 if (*NameOrErr == Name) 2192 return &Shdr; 2193 } else { 2194 reportUniqueWarning("unable to read the name of " + describe(Shdr) + 2195 ": " + toString(NameOrErr.takeError())); 2196 } 2197 } 2198 return nullptr; 2199 } 2200 2201 template <class ELFT> 2202 std::string ELFDumper<ELFT>::getDynamicEntry(uint64_t Type, 2203 uint64_t Value) const { 2204 auto FormatHexValue = [](uint64_t V) { 2205 std::string Str; 2206 raw_string_ostream OS(Str); 2207 const char *ConvChar = 2208 (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 2209 OS << format(ConvChar, V); 2210 return OS.str(); 2211 }; 2212 2213 auto FormatFlags = [](uint64_t V, 2214 llvm::ArrayRef<llvm::EnumEntry<unsigned int>> Array) { 2215 std::string Str; 2216 raw_string_ostream OS(Str); 2217 printFlags(V, Array, OS); 2218 return OS.str(); 2219 }; 2220 2221 // Handle custom printing of architecture specific tags 2222 switch (Obj.getHeader().e_machine) { 2223 case EM_AARCH64: 2224 switch (Type) { 2225 case DT_AARCH64_BTI_PLT: 2226 case DT_AARCH64_PAC_PLT: 2227 case DT_AARCH64_VARIANT_PCS: 2228 return std::to_string(Value); 2229 default: 2230 break; 2231 } 2232 break; 2233 case EM_HEXAGON: 2234 switch (Type) { 2235 case DT_HEXAGON_VER: 2236 return std::to_string(Value); 2237 case DT_HEXAGON_SYMSZ: 2238 case DT_HEXAGON_PLT: 2239 return FormatHexValue(Value); 2240 default: 2241 break; 2242 } 2243 break; 2244 case EM_MIPS: 2245 switch (Type) { 2246 case DT_MIPS_RLD_VERSION: 2247 case DT_MIPS_LOCAL_GOTNO: 2248 case DT_MIPS_SYMTABNO: 2249 case DT_MIPS_UNREFEXTNO: 2250 return std::to_string(Value); 2251 case DT_MIPS_TIME_STAMP: 2252 case DT_MIPS_ICHECKSUM: 2253 case DT_MIPS_IVERSION: 2254 case DT_MIPS_BASE_ADDRESS: 2255 case DT_MIPS_MSYM: 2256 case DT_MIPS_CONFLICT: 2257 case DT_MIPS_LIBLIST: 2258 case DT_MIPS_CONFLICTNO: 2259 case DT_MIPS_LIBLISTNO: 2260 case DT_MIPS_GOTSYM: 2261 case DT_MIPS_HIPAGENO: 2262 case DT_MIPS_RLD_MAP: 2263 case DT_MIPS_DELTA_CLASS: 2264 case DT_MIPS_DELTA_CLASS_NO: 2265 case DT_MIPS_DELTA_INSTANCE: 2266 case DT_MIPS_DELTA_RELOC: 2267 case DT_MIPS_DELTA_RELOC_NO: 2268 case DT_MIPS_DELTA_SYM: 2269 case DT_MIPS_DELTA_SYM_NO: 2270 case DT_MIPS_DELTA_CLASSSYM: 2271 case DT_MIPS_DELTA_CLASSSYM_NO: 2272 case DT_MIPS_CXX_FLAGS: 2273 case DT_MIPS_PIXIE_INIT: 2274 case DT_MIPS_SYMBOL_LIB: 2275 case DT_MIPS_LOCALPAGE_GOTIDX: 2276 case DT_MIPS_LOCAL_GOTIDX: 2277 case DT_MIPS_HIDDEN_GOTIDX: 2278 case DT_MIPS_PROTECTED_GOTIDX: 2279 case DT_MIPS_OPTIONS: 2280 case DT_MIPS_INTERFACE: 2281 case DT_MIPS_DYNSTR_ALIGN: 2282 case DT_MIPS_INTERFACE_SIZE: 2283 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2284 case DT_MIPS_PERF_SUFFIX: 2285 case DT_MIPS_COMPACT_SIZE: 2286 case DT_MIPS_GP_VALUE: 2287 case DT_MIPS_AUX_DYNAMIC: 2288 case DT_MIPS_PLTGOT: 2289 case DT_MIPS_RWPLT: 2290 case DT_MIPS_RLD_MAP_REL: 2291 case DT_MIPS_XHASH: 2292 return FormatHexValue(Value); 2293 case DT_MIPS_FLAGS: 2294 return FormatFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags)); 2295 default: 2296 break; 2297 } 2298 break; 2299 default: 2300 break; 2301 } 2302 2303 switch (Type) { 2304 case DT_PLTREL: 2305 if (Value == DT_REL) 2306 return "REL"; 2307 if (Value == DT_RELA) 2308 return "RELA"; 2309 LLVM_FALLTHROUGH; 2310 case DT_PLTGOT: 2311 case DT_HASH: 2312 case DT_STRTAB: 2313 case DT_SYMTAB: 2314 case DT_RELA: 2315 case DT_INIT: 2316 case DT_FINI: 2317 case DT_REL: 2318 case DT_JMPREL: 2319 case DT_INIT_ARRAY: 2320 case DT_FINI_ARRAY: 2321 case DT_PREINIT_ARRAY: 2322 case DT_DEBUG: 2323 case DT_VERDEF: 2324 case DT_VERNEED: 2325 case DT_VERSYM: 2326 case DT_GNU_HASH: 2327 case DT_NULL: 2328 return FormatHexValue(Value); 2329 case DT_RELACOUNT: 2330 case DT_RELCOUNT: 2331 case DT_VERDEFNUM: 2332 case DT_VERNEEDNUM: 2333 return std::to_string(Value); 2334 case DT_PLTRELSZ: 2335 case DT_RELASZ: 2336 case DT_RELAENT: 2337 case DT_STRSZ: 2338 case DT_SYMENT: 2339 case DT_RELSZ: 2340 case DT_RELENT: 2341 case DT_INIT_ARRAYSZ: 2342 case DT_FINI_ARRAYSZ: 2343 case DT_PREINIT_ARRAYSZ: 2344 case DT_RELRSZ: 2345 case DT_RELRENT: 2346 case DT_ANDROID_RELSZ: 2347 case DT_ANDROID_RELASZ: 2348 return std::to_string(Value) + " (bytes)"; 2349 case DT_NEEDED: 2350 case DT_SONAME: 2351 case DT_AUXILIARY: 2352 case DT_USED: 2353 case DT_FILTER: 2354 case DT_RPATH: 2355 case DT_RUNPATH: { 2356 const std::map<uint64_t, const char *> TagNames = { 2357 {DT_NEEDED, "Shared library"}, {DT_SONAME, "Library soname"}, 2358 {DT_AUXILIARY, "Auxiliary library"}, {DT_USED, "Not needed object"}, 2359 {DT_FILTER, "Filter library"}, {DT_RPATH, "Library rpath"}, 2360 {DT_RUNPATH, "Library runpath"}, 2361 }; 2362 2363 return (Twine(TagNames.at(Type)) + ": [" + getDynamicString(Value) + "]") 2364 .str(); 2365 } 2366 case DT_FLAGS: 2367 return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags)); 2368 case DT_FLAGS_1: 2369 return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags1)); 2370 default: 2371 return FormatHexValue(Value); 2372 } 2373 } 2374 2375 template <class ELFT> 2376 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 2377 if (DynamicStringTable.empty() && !DynamicStringTable.data()) { 2378 reportUniqueWarning("string table was not found"); 2379 return "<?>"; 2380 } 2381 2382 auto WarnAndReturn = [this](const Twine &Msg, uint64_t Offset) { 2383 reportUniqueWarning("string table at offset 0x" + Twine::utohexstr(Offset) + 2384 Msg); 2385 return "<?>"; 2386 }; 2387 2388 const uint64_t FileSize = Obj.getBufSize(); 2389 const uint64_t Offset = 2390 (const uint8_t *)DynamicStringTable.data() - Obj.base(); 2391 if (DynamicStringTable.size() > FileSize - Offset) 2392 return WarnAndReturn(" with size 0x" + 2393 Twine::utohexstr(DynamicStringTable.size()) + 2394 " goes past the end of the file (0x" + 2395 Twine::utohexstr(FileSize) + ")", 2396 Offset); 2397 2398 if (Value >= DynamicStringTable.size()) 2399 return WarnAndReturn( 2400 ": unable to read the string at 0x" + Twine::utohexstr(Offset + Value) + 2401 ": it goes past the end of the table (0x" + 2402 Twine::utohexstr(Offset + DynamicStringTable.size()) + ")", 2403 Offset); 2404 2405 if (DynamicStringTable.back() != '\0') 2406 return WarnAndReturn(": unable to read the string at 0x" + 2407 Twine::utohexstr(Offset + Value) + 2408 ": the string table is not null-terminated", 2409 Offset); 2410 2411 return DynamicStringTable.data() + Value; 2412 } 2413 2414 template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() { 2415 DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF); 2416 Ctx.printUnwindInformation(); 2417 } 2418 2419 // The namespace is needed to fix the compilation with GCC older than 7.0+. 2420 namespace { 2421 template <> void ELFDumper<ELF32LE>::printUnwindInfo() { 2422 if (Obj.getHeader().e_machine == EM_ARM) { 2423 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF.getFileName(), 2424 DotSymtabSec); 2425 Ctx.PrintUnwindInformation(); 2426 } 2427 DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF); 2428 Ctx.printUnwindInformation(); 2429 } 2430 } // namespace 2431 2432 template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() { 2433 ListScope D(W, "NeededLibraries"); 2434 2435 std::vector<StringRef> Libs; 2436 for (const auto &Entry : dynamic_table()) 2437 if (Entry.d_tag == ELF::DT_NEEDED) 2438 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 2439 2440 llvm::sort(Libs); 2441 2442 for (StringRef L : Libs) 2443 W.startLine() << L << "\n"; 2444 } 2445 2446 template <class ELFT> 2447 static Error checkHashTable(const ELFDumper<ELFT> &Dumper, 2448 const typename ELFT::Hash *H, 2449 bool *IsHeaderValid = nullptr) { 2450 const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile(); 2451 const uint64_t SecOffset = (const uint8_t *)H - Obj.base(); 2452 if (Dumper.getHashTableEntSize() == 8) { 2453 auto It = llvm::find_if(ElfMachineType, [&](const EnumEntry<unsigned> &E) { 2454 return E.Value == Obj.getHeader().e_machine; 2455 }); 2456 if (IsHeaderValid) 2457 *IsHeaderValid = false; 2458 return createError("the hash table at 0x" + Twine::utohexstr(SecOffset) + 2459 " is not supported: it contains non-standard 8 " 2460 "byte entries on " + 2461 It->AltName + " platform"); 2462 } 2463 2464 auto MakeError = [&](const Twine &Msg = "") { 2465 return createError("the hash table at offset 0x" + 2466 Twine::utohexstr(SecOffset) + 2467 " goes past the end of the file (0x" + 2468 Twine::utohexstr(Obj.getBufSize()) + ")" + Msg); 2469 }; 2470 2471 // Each SHT_HASH section starts from two 32-bit fields: nbucket and nchain. 2472 const unsigned HeaderSize = 2 * sizeof(typename ELFT::Word); 2473 2474 if (IsHeaderValid) 2475 *IsHeaderValid = Obj.getBufSize() - SecOffset >= HeaderSize; 2476 2477 if (Obj.getBufSize() - SecOffset < HeaderSize) 2478 return MakeError(); 2479 2480 if (Obj.getBufSize() - SecOffset - HeaderSize < 2481 ((uint64_t)H->nbucket + H->nchain) * sizeof(typename ELFT::Word)) 2482 return MakeError(", nbucket = " + Twine(H->nbucket) + 2483 ", nchain = " + Twine(H->nchain)); 2484 return Error::success(); 2485 } 2486 2487 template <class ELFT> 2488 static Error checkGNUHashTable(const ELFFile<ELFT> &Obj, 2489 const typename ELFT::GnuHash *GnuHashTable, 2490 bool *IsHeaderValid = nullptr) { 2491 const uint8_t *TableData = reinterpret_cast<const uint8_t *>(GnuHashTable); 2492 assert(TableData >= Obj.base() && TableData < Obj.base() + Obj.getBufSize() && 2493 "GnuHashTable must always point to a location inside the file"); 2494 2495 uint64_t TableOffset = TableData - Obj.base(); 2496 if (IsHeaderValid) 2497 *IsHeaderValid = TableOffset + /*Header size:*/ 16 < Obj.getBufSize(); 2498 if (TableOffset + 16 + (uint64_t)GnuHashTable->nbuckets * 4 + 2499 (uint64_t)GnuHashTable->maskwords * sizeof(typename ELFT::Off) >= 2500 Obj.getBufSize()) 2501 return createError("unable to dump the SHT_GNU_HASH " 2502 "section at 0x" + 2503 Twine::utohexstr(TableOffset) + 2504 ": it goes past the end of the file"); 2505 return Error::success(); 2506 } 2507 2508 template <typename ELFT> void ELFDumper<ELFT>::printHashTable() { 2509 DictScope D(W, "HashTable"); 2510 if (!HashTable) 2511 return; 2512 2513 bool IsHeaderValid; 2514 Error Err = checkHashTable(*this, HashTable, &IsHeaderValid); 2515 if (IsHeaderValid) { 2516 W.printNumber("Num Buckets", HashTable->nbucket); 2517 W.printNumber("Num Chains", HashTable->nchain); 2518 } 2519 2520 if (Err) { 2521 reportUniqueWarning(std::move(Err)); 2522 return; 2523 } 2524 2525 W.printList("Buckets", HashTable->buckets()); 2526 W.printList("Chains", HashTable->chains()); 2527 } 2528 2529 template <class ELFT> 2530 static Expected<ArrayRef<typename ELFT::Word>> 2531 getGnuHashTableChains(Optional<DynRegionInfo> DynSymRegion, 2532 const typename ELFT::GnuHash *GnuHashTable) { 2533 if (!DynSymRegion) 2534 return createError("no dynamic symbol table found"); 2535 2536 ArrayRef<typename ELFT::Sym> DynSymTable = 2537 DynSymRegion->template getAsArrayRef<typename ELFT::Sym>(); 2538 size_t NumSyms = DynSymTable.size(); 2539 if (!NumSyms) 2540 return createError("the dynamic symbol table is empty"); 2541 2542 if (GnuHashTable->symndx < NumSyms) 2543 return GnuHashTable->values(NumSyms); 2544 2545 // A normal empty GNU hash table section produced by linker might have 2546 // symndx set to the number of dynamic symbols + 1 (for the zero symbol) 2547 // and have dummy null values in the Bloom filter and in the buckets 2548 // vector (or no values at all). It happens because the value of symndx is not 2549 // important for dynamic loaders when the GNU hash table is empty. They just 2550 // skip the whole object during symbol lookup. In such cases, the symndx value 2551 // is irrelevant and we should not report a warning. 2552 ArrayRef<typename ELFT::Word> Buckets = GnuHashTable->buckets(); 2553 if (!llvm::all_of(Buckets, [](typename ELFT::Word V) { return V == 0; })) 2554 return createError( 2555 "the first hashed symbol index (" + Twine(GnuHashTable->symndx) + 2556 ") is greater than or equal to the number of dynamic symbols (" + 2557 Twine(NumSyms) + ")"); 2558 // There is no way to represent an array of (dynamic symbols count - symndx) 2559 // length. 2560 return ArrayRef<typename ELFT::Word>(); 2561 } 2562 2563 template <typename ELFT> 2564 void ELFDumper<ELFT>::printGnuHashTable() { 2565 DictScope D(W, "GnuHashTable"); 2566 if (!GnuHashTable) 2567 return; 2568 2569 bool IsHeaderValid; 2570 Error Err = checkGNUHashTable<ELFT>(Obj, GnuHashTable, &IsHeaderValid); 2571 if (IsHeaderValid) { 2572 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 2573 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 2574 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 2575 W.printNumber("Shift Count", GnuHashTable->shift2); 2576 } 2577 2578 if (Err) { 2579 reportUniqueWarning(std::move(Err)); 2580 return; 2581 } 2582 2583 ArrayRef<typename ELFT::Off> BloomFilter = GnuHashTable->filter(); 2584 W.printHexList("Bloom Filter", BloomFilter); 2585 2586 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 2587 W.printList("Buckets", Buckets); 2588 2589 Expected<ArrayRef<Elf_Word>> Chains = 2590 getGnuHashTableChains<ELFT>(DynSymRegion, GnuHashTable); 2591 if (!Chains) { 2592 reportUniqueWarning("unable to dump 'Values' for the SHT_GNU_HASH " 2593 "section: " + 2594 toString(Chains.takeError())); 2595 return; 2596 } 2597 2598 W.printHexList("Values", *Chains); 2599 } 2600 2601 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 2602 StringRef SOName = "<Not found>"; 2603 if (SONameOffset) 2604 SOName = getDynamicString(*SONameOffset); 2605 W.printString("LoadName", SOName); 2606 } 2607 2608 template <class ELFT> void ELFDumper<ELFT>::printArchSpecificInfo() { 2609 switch (Obj.getHeader().e_machine) { 2610 case EM_ARM: 2611 if (Obj.isLE()) 2612 printAttributes(ELF::SHT_ARM_ATTRIBUTES, 2613 std::make_unique<ARMAttributeParser>(&W), 2614 support::little); 2615 else 2616 reportUniqueWarning("attribute printing not implemented for big-endian " 2617 "ARM objects"); 2618 break; 2619 case EM_RISCV: 2620 if (Obj.isLE()) 2621 printAttributes(ELF::SHT_RISCV_ATTRIBUTES, 2622 std::make_unique<RISCVAttributeParser>(&W), 2623 support::little); 2624 else 2625 reportUniqueWarning("attribute printing not implemented for big-endian " 2626 "RISC-V objects"); 2627 break; 2628 case EM_MSP430: 2629 printAttributes(ELF::SHT_MSP430_ATTRIBUTES, 2630 std::make_unique<MSP430AttributeParser>(&W), 2631 support::little); 2632 break; 2633 case EM_MIPS: { 2634 printMipsABIFlags(); 2635 printMipsOptions(); 2636 printMipsReginfo(); 2637 MipsGOTParser<ELFT> Parser(*this); 2638 if (Error E = Parser.findGOT(dynamic_table(), dynamic_symbols())) 2639 reportUniqueWarning(std::move(E)); 2640 else if (!Parser.isGotEmpty()) 2641 printMipsGOT(Parser); 2642 2643 if (Error E = Parser.findPLT(dynamic_table())) 2644 reportUniqueWarning(std::move(E)); 2645 else if (!Parser.isPltEmpty()) 2646 printMipsPLT(Parser); 2647 break; 2648 } 2649 default: 2650 break; 2651 } 2652 } 2653 2654 template <class ELFT> 2655 void ELFDumper<ELFT>::printAttributes( 2656 unsigned AttrShType, std::unique_ptr<ELFAttributeParser> AttrParser, 2657 support::endianness Endianness) { 2658 assert((AttrShType != ELF::SHT_NULL) && AttrParser && 2659 "Incomplete ELF attribute implementation"); 2660 DictScope BA(W, "BuildAttributes"); 2661 for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { 2662 if (Sec.sh_type != AttrShType) 2663 continue; 2664 2665 ArrayRef<uint8_t> Contents; 2666 if (Expected<ArrayRef<uint8_t>> ContentOrErr = 2667 Obj.getSectionContents(Sec)) { 2668 Contents = *ContentOrErr; 2669 if (Contents.empty()) { 2670 reportUniqueWarning("the " + describe(Sec) + " is empty"); 2671 continue; 2672 } 2673 } else { 2674 reportUniqueWarning("unable to read the content of the " + describe(Sec) + 2675 ": " + toString(ContentOrErr.takeError())); 2676 continue; 2677 } 2678 2679 W.printHex("FormatVersion", Contents[0]); 2680 2681 if (Error E = AttrParser->parse(Contents, Endianness)) 2682 reportUniqueWarning("unable to dump attributes from the " + 2683 describe(Sec) + ": " + toString(std::move(E))); 2684 } 2685 } 2686 2687 namespace { 2688 2689 template <class ELFT> class MipsGOTParser { 2690 public: 2691 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 2692 using Entry = typename ELFT::Addr; 2693 using Entries = ArrayRef<Entry>; 2694 2695 const bool IsStatic; 2696 const ELFFile<ELFT> &Obj; 2697 const ELFDumper<ELFT> &Dumper; 2698 2699 MipsGOTParser(const ELFDumper<ELFT> &D); 2700 Error findGOT(Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); 2701 Error findPLT(Elf_Dyn_Range DynTable); 2702 2703 bool isGotEmpty() const { return GotEntries.empty(); } 2704 bool isPltEmpty() const { return PltEntries.empty(); } 2705 2706 uint64_t getGp() const; 2707 2708 const Entry *getGotLazyResolver() const; 2709 const Entry *getGotModulePointer() const; 2710 const Entry *getPltLazyResolver() const; 2711 const Entry *getPltModulePointer() const; 2712 2713 Entries getLocalEntries() const; 2714 Entries getGlobalEntries() const; 2715 Entries getOtherEntries() const; 2716 Entries getPltEntries() const; 2717 2718 uint64_t getGotAddress(const Entry * E) const; 2719 int64_t getGotOffset(const Entry * E) const; 2720 const Elf_Sym *getGotSym(const Entry *E) const; 2721 2722 uint64_t getPltAddress(const Entry * E) const; 2723 const Elf_Sym *getPltSym(const Entry *E) const; 2724 2725 StringRef getPltStrTable() const { return PltStrTable; } 2726 const Elf_Shdr *getPltSymTable() const { return PltSymTable; } 2727 2728 private: 2729 const Elf_Shdr *GotSec; 2730 size_t LocalNum; 2731 size_t GlobalNum; 2732 2733 const Elf_Shdr *PltSec; 2734 const Elf_Shdr *PltRelSec; 2735 const Elf_Shdr *PltSymTable; 2736 StringRef FileName; 2737 2738 Elf_Sym_Range GotDynSyms; 2739 StringRef PltStrTable; 2740 2741 Entries GotEntries; 2742 Entries PltEntries; 2743 }; 2744 2745 } // end anonymous namespace 2746 2747 template <class ELFT> 2748 MipsGOTParser<ELFT>::MipsGOTParser(const ELFDumper<ELFT> &D) 2749 : IsStatic(D.dynamic_table().empty()), Obj(D.getElfObject().getELFFile()), 2750 Dumper(D), GotSec(nullptr), LocalNum(0), GlobalNum(0), PltSec(nullptr), 2751 PltRelSec(nullptr), PltSymTable(nullptr), 2752 FileName(D.getElfObject().getFileName()) {} 2753 2754 template <class ELFT> 2755 Error MipsGOTParser<ELFT>::findGOT(Elf_Dyn_Range DynTable, 2756 Elf_Sym_Range DynSyms) { 2757 // See "Global Offset Table" in Chapter 5 in the following document 2758 // for detailed GOT description. 2759 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 2760 2761 // Find static GOT secton. 2762 if (IsStatic) { 2763 GotSec = Dumper.findSectionByName(".got"); 2764 if (!GotSec) 2765 return Error::success(); 2766 2767 ArrayRef<uint8_t> Content = 2768 unwrapOrError(FileName, Obj.getSectionContents(*GotSec)); 2769 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2770 Content.size() / sizeof(Entry)); 2771 LocalNum = GotEntries.size(); 2772 return Error::success(); 2773 } 2774 2775 // Lookup dynamic table tags which define the GOT layout. 2776 Optional<uint64_t> DtPltGot; 2777 Optional<uint64_t> DtLocalGotNum; 2778 Optional<uint64_t> DtGotSym; 2779 for (const auto &Entry : DynTable) { 2780 switch (Entry.getTag()) { 2781 case ELF::DT_PLTGOT: 2782 DtPltGot = Entry.getVal(); 2783 break; 2784 case ELF::DT_MIPS_LOCAL_GOTNO: 2785 DtLocalGotNum = Entry.getVal(); 2786 break; 2787 case ELF::DT_MIPS_GOTSYM: 2788 DtGotSym = Entry.getVal(); 2789 break; 2790 } 2791 } 2792 2793 if (!DtPltGot && !DtLocalGotNum && !DtGotSym) 2794 return Error::success(); 2795 2796 if (!DtPltGot) 2797 return createError("cannot find PLTGOT dynamic tag"); 2798 if (!DtLocalGotNum) 2799 return createError("cannot find MIPS_LOCAL_GOTNO dynamic tag"); 2800 if (!DtGotSym) 2801 return createError("cannot find MIPS_GOTSYM dynamic tag"); 2802 2803 size_t DynSymTotal = DynSyms.size(); 2804 if (*DtGotSym > DynSymTotal) 2805 return createError("DT_MIPS_GOTSYM value (" + Twine(*DtGotSym) + 2806 ") exceeds the number of dynamic symbols (" + 2807 Twine(DynSymTotal) + ")"); 2808 2809 GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot); 2810 if (!GotSec) 2811 return createError("there is no non-empty GOT section at 0x" + 2812 Twine::utohexstr(*DtPltGot)); 2813 2814 LocalNum = *DtLocalGotNum; 2815 GlobalNum = DynSymTotal - *DtGotSym; 2816 2817 ArrayRef<uint8_t> Content = 2818 unwrapOrError(FileName, Obj.getSectionContents(*GotSec)); 2819 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2820 Content.size() / sizeof(Entry)); 2821 GotDynSyms = DynSyms.drop_front(*DtGotSym); 2822 2823 return Error::success(); 2824 } 2825 2826 template <class ELFT> 2827 Error MipsGOTParser<ELFT>::findPLT(Elf_Dyn_Range DynTable) { 2828 // Lookup dynamic table tags which define the PLT layout. 2829 Optional<uint64_t> DtMipsPltGot; 2830 Optional<uint64_t> DtJmpRel; 2831 for (const auto &Entry : DynTable) { 2832 switch (Entry.getTag()) { 2833 case ELF::DT_MIPS_PLTGOT: 2834 DtMipsPltGot = Entry.getVal(); 2835 break; 2836 case ELF::DT_JMPREL: 2837 DtJmpRel = Entry.getVal(); 2838 break; 2839 } 2840 } 2841 2842 if (!DtMipsPltGot && !DtJmpRel) 2843 return Error::success(); 2844 2845 // Find PLT section. 2846 if (!DtMipsPltGot) 2847 return createError("cannot find MIPS_PLTGOT dynamic tag"); 2848 if (!DtJmpRel) 2849 return createError("cannot find JMPREL dynamic tag"); 2850 2851 PltSec = findNotEmptySectionByAddress(Obj, FileName, *DtMipsPltGot); 2852 if (!PltSec) 2853 return createError("there is no non-empty PLTGOT section at 0x" + 2854 Twine::utohexstr(*DtMipsPltGot)); 2855 2856 PltRelSec = findNotEmptySectionByAddress(Obj, FileName, *DtJmpRel); 2857 if (!PltRelSec) 2858 return createError("there is no non-empty RELPLT section at 0x" + 2859 Twine::utohexstr(*DtJmpRel)); 2860 2861 if (Expected<ArrayRef<uint8_t>> PltContentOrErr = 2862 Obj.getSectionContents(*PltSec)) 2863 PltEntries = 2864 Entries(reinterpret_cast<const Entry *>(PltContentOrErr->data()), 2865 PltContentOrErr->size() / sizeof(Entry)); 2866 else 2867 return createError("unable to read PLTGOT section content: " + 2868 toString(PltContentOrErr.takeError())); 2869 2870 if (Expected<const Elf_Shdr *> PltSymTableOrErr = 2871 Obj.getSection(PltRelSec->sh_link)) 2872 PltSymTable = *PltSymTableOrErr; 2873 else 2874 return createError("unable to get a symbol table linked to the " + 2875 describe(Obj, *PltRelSec) + ": " + 2876 toString(PltSymTableOrErr.takeError())); 2877 2878 if (Expected<StringRef> StrTabOrErr = 2879 Obj.getStringTableForSymtab(*PltSymTable)) 2880 PltStrTable = *StrTabOrErr; 2881 else 2882 return createError("unable to get a string table for the " + 2883 describe(Obj, *PltSymTable) + ": " + 2884 toString(StrTabOrErr.takeError())); 2885 2886 return Error::success(); 2887 } 2888 2889 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 2890 return GotSec->sh_addr + 0x7ff0; 2891 } 2892 2893 template <class ELFT> 2894 const typename MipsGOTParser<ELFT>::Entry * 2895 MipsGOTParser<ELFT>::getGotLazyResolver() const { 2896 return LocalNum > 0 ? &GotEntries[0] : nullptr; 2897 } 2898 2899 template <class ELFT> 2900 const typename MipsGOTParser<ELFT>::Entry * 2901 MipsGOTParser<ELFT>::getGotModulePointer() const { 2902 if (LocalNum < 2) 2903 return nullptr; 2904 const Entry &E = GotEntries[1]; 2905 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 2906 return nullptr; 2907 return &E; 2908 } 2909 2910 template <class ELFT> 2911 typename MipsGOTParser<ELFT>::Entries 2912 MipsGOTParser<ELFT>::getLocalEntries() const { 2913 size_t Skip = getGotModulePointer() ? 2 : 1; 2914 if (LocalNum - Skip <= 0) 2915 return Entries(); 2916 return GotEntries.slice(Skip, LocalNum - Skip); 2917 } 2918 2919 template <class ELFT> 2920 typename MipsGOTParser<ELFT>::Entries 2921 MipsGOTParser<ELFT>::getGlobalEntries() const { 2922 if (GlobalNum == 0) 2923 return Entries(); 2924 return GotEntries.slice(LocalNum, GlobalNum); 2925 } 2926 2927 template <class ELFT> 2928 typename MipsGOTParser<ELFT>::Entries 2929 MipsGOTParser<ELFT>::getOtherEntries() const { 2930 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 2931 if (OtherNum == 0) 2932 return Entries(); 2933 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 2934 } 2935 2936 template <class ELFT> 2937 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 2938 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2939 return GotSec->sh_addr + Offset; 2940 } 2941 2942 template <class ELFT> 2943 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 2944 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2945 return Offset - 0x7ff0; 2946 } 2947 2948 template <class ELFT> 2949 const typename MipsGOTParser<ELFT>::Elf_Sym * 2950 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 2951 int64_t Offset = std::distance(GotEntries.data(), E); 2952 return &GotDynSyms[Offset - LocalNum]; 2953 } 2954 2955 template <class ELFT> 2956 const typename MipsGOTParser<ELFT>::Entry * 2957 MipsGOTParser<ELFT>::getPltLazyResolver() const { 2958 return PltEntries.empty() ? nullptr : &PltEntries[0]; 2959 } 2960 2961 template <class ELFT> 2962 const typename MipsGOTParser<ELFT>::Entry * 2963 MipsGOTParser<ELFT>::getPltModulePointer() const { 2964 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 2965 } 2966 2967 template <class ELFT> 2968 typename MipsGOTParser<ELFT>::Entries 2969 MipsGOTParser<ELFT>::getPltEntries() const { 2970 if (PltEntries.size() <= 2) 2971 return Entries(); 2972 return PltEntries.slice(2, PltEntries.size() - 2); 2973 } 2974 2975 template <class ELFT> 2976 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 2977 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 2978 return PltSec->sh_addr + Offset; 2979 } 2980 2981 template <class ELFT> 2982 const typename MipsGOTParser<ELFT>::Elf_Sym * 2983 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 2984 int64_t Offset = std::distance(getPltEntries().data(), E); 2985 if (PltRelSec->sh_type == ELF::SHT_REL) { 2986 Elf_Rel_Range Rels = unwrapOrError(FileName, Obj.rels(*PltRelSec)); 2987 return unwrapOrError(FileName, 2988 Obj.getRelocationSymbol(Rels[Offset], PltSymTable)); 2989 } else { 2990 Elf_Rela_Range Rels = unwrapOrError(FileName, Obj.relas(*PltRelSec)); 2991 return unwrapOrError(FileName, 2992 Obj.getRelocationSymbol(Rels[Offset], PltSymTable)); 2993 } 2994 } 2995 2996 const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2997 {"None", Mips::AFL_EXT_NONE}, 2998 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2999 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 3000 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 3001 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 3002 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 3003 {"LSI R4010", Mips::AFL_EXT_4010}, 3004 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 3005 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 3006 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 3007 {"MIPS R4650", Mips::AFL_EXT_4650}, 3008 {"MIPS R5900", Mips::AFL_EXT_5900}, 3009 {"MIPS R10000", Mips::AFL_EXT_10000}, 3010 {"NEC VR4100", Mips::AFL_EXT_4100}, 3011 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 3012 {"NEC VR4120", Mips::AFL_EXT_4120}, 3013 {"NEC VR5400", Mips::AFL_EXT_5400}, 3014 {"NEC VR5500", Mips::AFL_EXT_5500}, 3015 {"RMI Xlr", Mips::AFL_EXT_XLR}, 3016 {"Toshiba R3900", Mips::AFL_EXT_3900} 3017 }; 3018 3019 const EnumEntry<unsigned> ElfMipsASEFlags[] = { 3020 {"DSP", Mips::AFL_ASE_DSP}, 3021 {"DSPR2", Mips::AFL_ASE_DSPR2}, 3022 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 3023 {"MCU", Mips::AFL_ASE_MCU}, 3024 {"MDMX", Mips::AFL_ASE_MDMX}, 3025 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 3026 {"MT", Mips::AFL_ASE_MT}, 3027 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 3028 {"VZ", Mips::AFL_ASE_VIRT}, 3029 {"MSA", Mips::AFL_ASE_MSA}, 3030 {"MIPS16", Mips::AFL_ASE_MIPS16}, 3031 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 3032 {"XPA", Mips::AFL_ASE_XPA}, 3033 {"CRC", Mips::AFL_ASE_CRC}, 3034 {"GINV", Mips::AFL_ASE_GINV}, 3035 }; 3036 3037 const EnumEntry<unsigned> ElfMipsFpABIType[] = { 3038 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 3039 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 3040 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 3041 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 3042 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 3043 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 3044 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 3045 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 3046 {"Hard float compat (32-bit CPU, 64-bit FPU)", 3047 Mips::Val_GNU_MIPS_ABI_FP_64A} 3048 }; 3049 3050 static const EnumEntry<unsigned> ElfMipsFlags1[] { 3051 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 3052 }; 3053 3054 static int getMipsRegisterSize(uint8_t Flag) { 3055 switch (Flag) { 3056 case Mips::AFL_REG_NONE: 3057 return 0; 3058 case Mips::AFL_REG_32: 3059 return 32; 3060 case Mips::AFL_REG_64: 3061 return 64; 3062 case Mips::AFL_REG_128: 3063 return 128; 3064 default: 3065 return -1; 3066 } 3067 } 3068 3069 template <class ELFT> 3070 static void printMipsReginfoData(ScopedPrinter &W, 3071 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 3072 W.printHex("GP", Reginfo.ri_gp_value); 3073 W.printHex("General Mask", Reginfo.ri_gprmask); 3074 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 3075 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 3076 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 3077 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 3078 } 3079 3080 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 3081 const Elf_Shdr *RegInfoSec = findSectionByName(".reginfo"); 3082 if (!RegInfoSec) { 3083 W.startLine() << "There is no .reginfo section in the file.\n"; 3084 return; 3085 } 3086 3087 Expected<ArrayRef<uint8_t>> ContentsOrErr = 3088 Obj.getSectionContents(*RegInfoSec); 3089 if (!ContentsOrErr) { 3090 this->reportUniqueWarning( 3091 "unable to read the content of the .reginfo section (" + 3092 describe(*RegInfoSec) + "): " + toString(ContentsOrErr.takeError())); 3093 return; 3094 } 3095 3096 if (ContentsOrErr->size() < sizeof(Elf_Mips_RegInfo<ELFT>)) { 3097 this->reportUniqueWarning("the .reginfo section has an invalid size (0x" + 3098 Twine::utohexstr(ContentsOrErr->size()) + ")"); 3099 return; 3100 } 3101 3102 DictScope GS(W, "MIPS RegInfo"); 3103 printMipsReginfoData(W, *reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>( 3104 ContentsOrErr->data())); 3105 } 3106 3107 template <class ELFT> 3108 static Expected<const Elf_Mips_Options<ELFT> *> 3109 readMipsOptions(const uint8_t *SecBegin, ArrayRef<uint8_t> &SecData, 3110 bool &IsSupported) { 3111 if (SecData.size() < sizeof(Elf_Mips_Options<ELFT>)) 3112 return createError("the .MIPS.options section has an invalid size (0x" + 3113 Twine::utohexstr(SecData.size()) + ")"); 3114 3115 const Elf_Mips_Options<ELFT> *O = 3116 reinterpret_cast<const Elf_Mips_Options<ELFT> *>(SecData.data()); 3117 const uint8_t Size = O->size; 3118 if (Size > SecData.size()) { 3119 const uint64_t Offset = SecData.data() - SecBegin; 3120 const uint64_t SecSize = Offset + SecData.size(); 3121 return createError("a descriptor of size 0x" + Twine::utohexstr(Size) + 3122 " at offset 0x" + Twine::utohexstr(Offset) + 3123 " goes past the end of the .MIPS.options " 3124 "section of size 0x" + 3125 Twine::utohexstr(SecSize)); 3126 } 3127 3128 IsSupported = O->kind == ODK_REGINFO; 3129 const size_t ExpectedSize = 3130 sizeof(Elf_Mips_Options<ELFT>) + sizeof(Elf_Mips_RegInfo<ELFT>); 3131 3132 if (IsSupported) 3133 if (Size < ExpectedSize) 3134 return createError( 3135 "a .MIPS.options entry of kind " + 3136 Twine(getElfMipsOptionsOdkType(O->kind)) + 3137 " has an invalid size (0x" + Twine::utohexstr(Size) + 3138 "), the expected size is 0x" + Twine::utohexstr(ExpectedSize)); 3139 3140 SecData = SecData.drop_front(Size); 3141 return O; 3142 } 3143 3144 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 3145 const Elf_Shdr *MipsOpts = findSectionByName(".MIPS.options"); 3146 if (!MipsOpts) { 3147 W.startLine() << "There is no .MIPS.options section in the file.\n"; 3148 return; 3149 } 3150 3151 DictScope GS(W, "MIPS Options"); 3152 3153 ArrayRef<uint8_t> Data = 3154 unwrapOrError(ObjF.getFileName(), Obj.getSectionContents(*MipsOpts)); 3155 const uint8_t *const SecBegin = Data.begin(); 3156 while (!Data.empty()) { 3157 bool IsSupported; 3158 Expected<const Elf_Mips_Options<ELFT> *> OptsOrErr = 3159 readMipsOptions<ELFT>(SecBegin, Data, IsSupported); 3160 if (!OptsOrErr) { 3161 reportUniqueWarning(OptsOrErr.takeError()); 3162 break; 3163 } 3164 3165 unsigned Kind = (*OptsOrErr)->kind; 3166 const char *Type = getElfMipsOptionsOdkType(Kind); 3167 if (!IsSupported) { 3168 W.startLine() << "Unsupported MIPS options tag: " << Type << " (" << Kind 3169 << ")\n"; 3170 continue; 3171 } 3172 3173 DictScope GS(W, Type); 3174 if (Kind == ODK_REGINFO) 3175 printMipsReginfoData(W, (*OptsOrErr)->getRegInfo()); 3176 else 3177 llvm_unreachable("unexpected .MIPS.options section descriptor kind"); 3178 } 3179 } 3180 3181 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 3182 const Elf_Shdr *StackMapSection = findSectionByName(".llvm_stackmaps"); 3183 if (!StackMapSection) 3184 return; 3185 3186 auto Warn = [&](Error &&E) { 3187 this->reportUniqueWarning("unable to read the stack map from " + 3188 describe(*StackMapSection) + ": " + 3189 toString(std::move(E))); 3190 }; 3191 3192 Expected<ArrayRef<uint8_t>> ContentOrErr = 3193 Obj.getSectionContents(*StackMapSection); 3194 if (!ContentOrErr) { 3195 Warn(ContentOrErr.takeError()); 3196 return; 3197 } 3198 3199 if (Error E = StackMapParser<ELFT::TargetEndianness>::validateHeader( 3200 *ContentOrErr)) { 3201 Warn(std::move(E)); 3202 return; 3203 } 3204 3205 prettyPrintStackMap(W, StackMapParser<ELFT::TargetEndianness>(*ContentOrErr)); 3206 } 3207 3208 template <class ELFT> 3209 void ELFDumper<ELFT>::printReloc(const Relocation<ELFT> &R, unsigned RelIndex, 3210 const Elf_Shdr &Sec, const Elf_Shdr *SymTab) { 3211 Expected<RelSymbol<ELFT>> Target = getRelocationTarget(R, SymTab); 3212 if (!Target) 3213 reportUniqueWarning("unable to print relocation " + Twine(RelIndex) + 3214 " in " + describe(Sec) + ": " + 3215 toString(Target.takeError())); 3216 else 3217 printRelRelaReloc(R, *Target); 3218 } 3219 3220 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 3221 StringRef Str2) { 3222 OS.PadToColumn(2u); 3223 OS << Str1; 3224 OS.PadToColumn(37u); 3225 OS << Str2 << "\n"; 3226 OS.flush(); 3227 } 3228 3229 template <class ELFT> 3230 static std::string getSectionHeadersNumString(const ELFFile<ELFT> &Obj, 3231 StringRef FileName) { 3232 const typename ELFT::Ehdr &ElfHeader = Obj.getHeader(); 3233 if (ElfHeader.e_shnum != 0) 3234 return to_string(ElfHeader.e_shnum); 3235 3236 Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections(); 3237 if (!ArrOrErr) { 3238 // In this case we can ignore an error, because we have already reported a 3239 // warning about the broken section header table earlier. 3240 consumeError(ArrOrErr.takeError()); 3241 return "<?>"; 3242 } 3243 3244 if (ArrOrErr->empty()) 3245 return "0"; 3246 return "0 (" + to_string((*ArrOrErr)[0].sh_size) + ")"; 3247 } 3248 3249 template <class ELFT> 3250 static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> &Obj, 3251 StringRef FileName) { 3252 const typename ELFT::Ehdr &ElfHeader = Obj.getHeader(); 3253 if (ElfHeader.e_shstrndx != SHN_XINDEX) 3254 return to_string(ElfHeader.e_shstrndx); 3255 3256 Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections(); 3257 if (!ArrOrErr) { 3258 // In this case we can ignore an error, because we have already reported a 3259 // warning about the broken section header table earlier. 3260 consumeError(ArrOrErr.takeError()); 3261 return "<?>"; 3262 } 3263 3264 if (ArrOrErr->empty()) 3265 return "65535 (corrupt: out of range)"; 3266 return to_string(ElfHeader.e_shstrndx) + " (" + 3267 to_string((*ArrOrErr)[0].sh_link) + ")"; 3268 } 3269 3270 static const EnumEntry<unsigned> *getObjectFileEnumEntry(unsigned Type) { 3271 auto It = llvm::find_if(ElfObjectFileType, [&](const EnumEntry<unsigned> &E) { 3272 return E.Value == Type; 3273 }); 3274 if (It != makeArrayRef(ElfObjectFileType).end()) 3275 return It; 3276 return nullptr; 3277 } 3278 3279 template <class ELFT> 3280 void GNUELFDumper<ELFT>::printFileSummary(StringRef FileStr, ObjectFile &Obj, 3281 ArrayRef<std::string> InputFilenames, 3282 const Archive *A) { 3283 if (InputFilenames.size() > 1 || A) { 3284 this->W.startLine() << "\n"; 3285 this->W.printString("File", FileStr); 3286 } 3287 } 3288 3289 template <class ELFT> void GNUELFDumper<ELFT>::printFileHeaders() { 3290 const Elf_Ehdr &e = this->Obj.getHeader(); 3291 OS << "ELF Header:\n"; 3292 OS << " Magic: "; 3293 std::string Str; 3294 for (int i = 0; i < ELF::EI_NIDENT; i++) 3295 OS << format(" %02x", static_cast<int>(e.e_ident[i])); 3296 OS << "\n"; 3297 Str = enumToString(e.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3298 printFields(OS, "Class:", Str); 3299 Str = enumToString(e.e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 3300 printFields(OS, "Data:", Str); 3301 OS.PadToColumn(2u); 3302 OS << "Version:"; 3303 OS.PadToColumn(37u); 3304 OS << to_hexString(e.e_ident[ELF::EI_VERSION]); 3305 if (e.e_version == ELF::EV_CURRENT) 3306 OS << " (current)"; 3307 OS << "\n"; 3308 Str = enumToString(e.e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 3309 printFields(OS, "OS/ABI:", Str); 3310 printFields(OS, 3311 "ABI Version:", std::to_string(e.e_ident[ELF::EI_ABIVERSION])); 3312 3313 if (const EnumEntry<unsigned> *E = getObjectFileEnumEntry(e.e_type)) { 3314 Str = E->AltName.str(); 3315 } else { 3316 if (e.e_type >= ET_LOPROC) 3317 Str = "Processor Specific: (" + to_hexString(e.e_type, false) + ")"; 3318 else if (e.e_type >= ET_LOOS) 3319 Str = "OS Specific: (" + to_hexString(e.e_type, false) + ")"; 3320 else 3321 Str = "<unknown>: " + to_hexString(e.e_type, false); 3322 } 3323 printFields(OS, "Type:", Str); 3324 3325 Str = enumToString(e.e_machine, makeArrayRef(ElfMachineType)); 3326 printFields(OS, "Machine:", Str); 3327 Str = "0x" + to_hexString(e.e_version); 3328 printFields(OS, "Version:", Str); 3329 Str = "0x" + to_hexString(e.e_entry); 3330 printFields(OS, "Entry point address:", Str); 3331 Str = to_string(e.e_phoff) + " (bytes into file)"; 3332 printFields(OS, "Start of program headers:", Str); 3333 Str = to_string(e.e_shoff) + " (bytes into file)"; 3334 printFields(OS, "Start of section headers:", Str); 3335 std::string ElfFlags; 3336 if (e.e_machine == EM_MIPS) 3337 ElfFlags = 3338 printFlags(e.e_flags, makeArrayRef(ElfHeaderMipsFlags), 3339 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3340 unsigned(ELF::EF_MIPS_MACH)); 3341 else if (e.e_machine == EM_RISCV) 3342 ElfFlags = printFlags(e.e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3343 else if (e.e_machine == EM_AVR) 3344 ElfFlags = printFlags(e.e_flags, makeArrayRef(ElfHeaderAVRFlags), 3345 unsigned(ELF::EF_AVR_ARCH_MASK)); 3346 Str = "0x" + to_hexString(e.e_flags); 3347 if (!ElfFlags.empty()) 3348 Str = Str + ", " + ElfFlags; 3349 printFields(OS, "Flags:", Str); 3350 Str = to_string(e.e_ehsize) + " (bytes)"; 3351 printFields(OS, "Size of this header:", Str); 3352 Str = to_string(e.e_phentsize) + " (bytes)"; 3353 printFields(OS, "Size of program headers:", Str); 3354 Str = to_string(e.e_phnum); 3355 printFields(OS, "Number of program headers:", Str); 3356 Str = to_string(e.e_shentsize) + " (bytes)"; 3357 printFields(OS, "Size of section headers:", Str); 3358 Str = getSectionHeadersNumString(this->Obj, this->FileName); 3359 printFields(OS, "Number of section headers:", Str); 3360 Str = getSectionHeaderTableIndexString(this->Obj, this->FileName); 3361 printFields(OS, "Section header string table index:", Str); 3362 } 3363 3364 template <class ELFT> std::vector<GroupSection> ELFDumper<ELFT>::getGroups() { 3365 auto GetSignature = [&](const Elf_Sym &Sym, unsigned SymNdx, 3366 const Elf_Shdr &Symtab) -> StringRef { 3367 Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(Symtab); 3368 if (!StrTableOrErr) { 3369 reportUniqueWarning("unable to get the string table for " + 3370 describe(Symtab) + ": " + 3371 toString(StrTableOrErr.takeError())); 3372 return "<?>"; 3373 } 3374 3375 StringRef Strings = *StrTableOrErr; 3376 if (Sym.st_name >= Strings.size()) { 3377 reportUniqueWarning("unable to get the name of the symbol with index " + 3378 Twine(SymNdx) + ": st_name (0x" + 3379 Twine::utohexstr(Sym.st_name) + 3380 ") is past the end of the string table of size 0x" + 3381 Twine::utohexstr(Strings.size())); 3382 return "<?>"; 3383 } 3384 3385 return StrTableOrErr->data() + Sym.st_name; 3386 }; 3387 3388 std::vector<GroupSection> Ret; 3389 uint64_t I = 0; 3390 for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { 3391 ++I; 3392 if (Sec.sh_type != ELF::SHT_GROUP) 3393 continue; 3394 3395 StringRef Signature = "<?>"; 3396 if (Expected<const Elf_Shdr *> SymtabOrErr = Obj.getSection(Sec.sh_link)) { 3397 if (Expected<const Elf_Sym *> SymOrErr = 3398 Obj.template getEntry<Elf_Sym>(**SymtabOrErr, Sec.sh_info)) 3399 Signature = GetSignature(**SymOrErr, Sec.sh_info, **SymtabOrErr); 3400 else 3401 reportUniqueWarning("unable to get the signature symbol for " + 3402 describe(Sec) + ": " + 3403 toString(SymOrErr.takeError())); 3404 } else { 3405 reportUniqueWarning("unable to get the symbol table for " + 3406 describe(Sec) + ": " + 3407 toString(SymtabOrErr.takeError())); 3408 } 3409 3410 ArrayRef<Elf_Word> Data; 3411 if (Expected<ArrayRef<Elf_Word>> ContentsOrErr = 3412 Obj.template getSectionContentsAsArray<Elf_Word>(Sec)) { 3413 if (ContentsOrErr->empty()) 3414 reportUniqueWarning("unable to read the section group flag from the " + 3415 describe(Sec) + ": the section is empty"); 3416 else 3417 Data = *ContentsOrErr; 3418 } else { 3419 reportUniqueWarning("unable to get the content of the " + describe(Sec) + 3420 ": " + toString(ContentsOrErr.takeError())); 3421 } 3422 3423 Ret.push_back({getPrintableSectionName(Sec), 3424 maybeDemangle(Signature), 3425 Sec.sh_name, 3426 I - 1, 3427 Sec.sh_link, 3428 Sec.sh_info, 3429 Data.empty() ? Elf_Word(0) : Data[0], 3430 {}}); 3431 3432 if (Data.empty()) 3433 continue; 3434 3435 std::vector<GroupMember> &GM = Ret.back().Members; 3436 for (uint32_t Ndx : Data.slice(1)) { 3437 if (Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(Ndx)) { 3438 GM.push_back({getPrintableSectionName(**SecOrErr), Ndx}); 3439 } else { 3440 reportUniqueWarning("unable to get the section with index " + 3441 Twine(Ndx) + " when dumping the " + describe(Sec) + 3442 ": " + toString(SecOrErr.takeError())); 3443 GM.push_back({"<?>", Ndx}); 3444 } 3445 } 3446 } 3447 return Ret; 3448 } 3449 3450 static DenseMap<uint64_t, const GroupSection *> 3451 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 3452 DenseMap<uint64_t, const GroupSection *> Ret; 3453 for (const GroupSection &G : Groups) 3454 for (const GroupMember &GM : G.Members) 3455 Ret.insert({GM.Index, &G}); 3456 return Ret; 3457 } 3458 3459 template <class ELFT> void GNUELFDumper<ELFT>::printGroupSections() { 3460 std::vector<GroupSection> V = this->getGroups(); 3461 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3462 for (const GroupSection &G : V) { 3463 OS << "\n" 3464 << getGroupType(G.Type) << " group section [" 3465 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 3466 << "] contains " << G.Members.size() << " sections:\n" 3467 << " [Index] Name\n"; 3468 for (const GroupMember &GM : G.Members) { 3469 const GroupSection *MainGroup = Map[GM.Index]; 3470 if (MainGroup != &G) 3471 this->reportUniqueWarning( 3472 "section with index " + Twine(GM.Index) + 3473 ", included in the group section with index " + 3474 Twine(MainGroup->Index) + 3475 ", was also found in the group section with index " + 3476 Twine(G.Index)); 3477 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 3478 } 3479 } 3480 3481 if (V.empty()) 3482 OS << "There are no section groups in this file.\n"; 3483 } 3484 3485 template <class ELFT> 3486 void GNUELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) { 3487 OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) << "\n"; 3488 } 3489 3490 template <class ELFT> 3491 void GNUELFDumper<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R, 3492 const RelSymbol<ELFT> &RelSym) { 3493 // First two fields are bit width dependent. The rest of them are fixed width. 3494 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3495 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3496 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3497 3498 Fields[0].Str = to_string(format_hex_no_prefix(R.Offset, Width)); 3499 Fields[1].Str = to_string(format_hex_no_prefix(R.Info, Width)); 3500 3501 SmallString<32> RelocName; 3502 this->Obj.getRelocationTypeName(R.Type, RelocName); 3503 Fields[2].Str = RelocName.c_str(); 3504 3505 if (RelSym.Sym) 3506 Fields[3].Str = 3507 to_string(format_hex_no_prefix(RelSym.Sym->getValue(), Width)); 3508 3509 Fields[4].Str = std::string(RelSym.Name); 3510 for (const Field &F : Fields) 3511 printField(F); 3512 3513 std::string Addend; 3514 if (Optional<int64_t> A = R.Addend) { 3515 int64_t RelAddend = *A; 3516 if (!RelSym.Name.empty()) { 3517 if (RelAddend < 0) { 3518 Addend = " - "; 3519 RelAddend = std::abs(RelAddend); 3520 } else { 3521 Addend = " + "; 3522 } 3523 } 3524 Addend += to_hexString(RelAddend, false); 3525 } 3526 OS << Addend << "\n"; 3527 } 3528 3529 template <class ELFT> 3530 static void printRelocHeaderFields(formatted_raw_ostream &OS, unsigned SType) { 3531 bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA; 3532 bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR; 3533 if (ELFT::Is64Bits) 3534 OS << " "; 3535 else 3536 OS << " "; 3537 if (IsRelr && opts::RawRelr) 3538 OS << "Data "; 3539 else 3540 OS << "Offset"; 3541 if (ELFT::Is64Bits) 3542 OS << " Info Type" 3543 << " Symbol's Value Symbol's Name"; 3544 else 3545 OS << " Info Type Sym. Value Symbol's Name"; 3546 if (IsRela) 3547 OS << " + Addend"; 3548 OS << "\n"; 3549 } 3550 3551 template <class ELFT> 3552 void GNUELFDumper<ELFT>::printDynamicRelocHeader(unsigned Type, StringRef Name, 3553 const DynRegionInfo &Reg) { 3554 uint64_t Offset = Reg.Addr - this->Obj.base(); 3555 OS << "\n'" << Name.str().c_str() << "' relocation section at offset 0x" 3556 << to_hexString(Offset, false) << " contains " << Reg.Size << " bytes:\n"; 3557 printRelocHeaderFields<ELFT>(OS, Type); 3558 } 3559 3560 template <class ELFT> 3561 static bool isRelocationSec(const typename ELFT::Shdr &Sec) { 3562 return Sec.sh_type == ELF::SHT_REL || Sec.sh_type == ELF::SHT_RELA || 3563 Sec.sh_type == ELF::SHT_RELR || Sec.sh_type == ELF::SHT_ANDROID_REL || 3564 Sec.sh_type == ELF::SHT_ANDROID_RELA || 3565 Sec.sh_type == ELF::SHT_ANDROID_RELR; 3566 } 3567 3568 template <class ELFT> void GNUELFDumper<ELFT>::printRelocations() { 3569 auto GetEntriesNum = [&](const Elf_Shdr &Sec) -> Expected<size_t> { 3570 // Android's packed relocation section needs to be unpacked first 3571 // to get the actual number of entries. 3572 if (Sec.sh_type == ELF::SHT_ANDROID_REL || 3573 Sec.sh_type == ELF::SHT_ANDROID_RELA) { 3574 Expected<std::vector<typename ELFT::Rela>> RelasOrErr = 3575 this->Obj.android_relas(Sec); 3576 if (!RelasOrErr) 3577 return RelasOrErr.takeError(); 3578 return RelasOrErr->size(); 3579 } 3580 3581 if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR || 3582 Sec.sh_type == ELF::SHT_ANDROID_RELR)) { 3583 Expected<Elf_Relr_Range> RelrsOrErr = this->Obj.relrs(Sec); 3584 if (!RelrsOrErr) 3585 return RelrsOrErr.takeError(); 3586 return this->Obj.decode_relrs(*RelrsOrErr).size(); 3587 } 3588 3589 return Sec.getEntityCount(); 3590 }; 3591 3592 bool HasRelocSections = false; 3593 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 3594 if (!isRelocationSec<ELFT>(Sec)) 3595 continue; 3596 HasRelocSections = true; 3597 3598 std::string EntriesNum = "<?>"; 3599 if (Expected<size_t> NumOrErr = GetEntriesNum(Sec)) 3600 EntriesNum = std::to_string(*NumOrErr); 3601 else 3602 this->reportUniqueWarning("unable to get the number of relocations in " + 3603 this->describe(Sec) + ": " + 3604 toString(NumOrErr.takeError())); 3605 3606 uintX_t Offset = Sec.sh_offset; 3607 StringRef Name = this->getPrintableSectionName(Sec); 3608 OS << "\nRelocation section '" << Name << "' at offset 0x" 3609 << to_hexString(Offset, false) << " contains " << EntriesNum 3610 << " entries:\n"; 3611 printRelocHeaderFields<ELFT>(OS, Sec.sh_type); 3612 this->printRelocationsHelper(Sec); 3613 } 3614 if (!HasRelocSections) 3615 OS << "\nThere are no relocations in this file.\n"; 3616 } 3617 3618 // Print the offset of a particular section from anyone of the ranges: 3619 // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER]. 3620 // If 'Type' does not fall within any of those ranges, then a string is 3621 // returned as '<unknown>' followed by the type value. 3622 static std::string getSectionTypeOffsetString(unsigned Type) { 3623 if (Type >= SHT_LOOS && Type <= SHT_HIOS) 3624 return "LOOS+0x" + to_hexString(Type - SHT_LOOS); 3625 else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC) 3626 return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC); 3627 else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER) 3628 return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER); 3629 return "0x" + to_hexString(Type) + ": <unknown>"; 3630 } 3631 3632 static std::string getSectionTypeString(unsigned Machine, unsigned Type) { 3633 StringRef Name = getELFSectionTypeName(Machine, Type); 3634 3635 // Handle SHT_GNU_* type names. 3636 if (Name.startswith("SHT_GNU_")) { 3637 if (Name == "SHT_GNU_HASH") 3638 return "GNU_HASH"; 3639 // E.g. SHT_GNU_verneed -> VERNEED. 3640 return Name.drop_front(8).upper(); 3641 } 3642 3643 if (Name == "SHT_SYMTAB_SHNDX") 3644 return "SYMTAB SECTION INDICES"; 3645 3646 if (Name.startswith("SHT_")) 3647 return Name.drop_front(4).str(); 3648 return getSectionTypeOffsetString(Type); 3649 } 3650 3651 static void printSectionDescription(formatted_raw_ostream &OS, 3652 unsigned EMachine) { 3653 OS << "Key to Flags:\n"; 3654 OS << " W (write), A (alloc), X (execute), M (merge), S (strings), I " 3655 "(info),\n"; 3656 OS << " L (link order), O (extra OS processing required), G (group), T " 3657 "(TLS),\n"; 3658 OS << " C (compressed), x (unknown), o (OS specific), E (exclude),\n"; 3659 OS << " R (retain)"; 3660 3661 if (EMachine == EM_X86_64) 3662 OS << ", l (large)"; 3663 else if (EMachine == EM_ARM) 3664 OS << ", y (purecode)"; 3665 3666 OS << ", p (processor specific)\n"; 3667 } 3668 3669 template <class ELFT> void GNUELFDumper<ELFT>::printSectionHeaders() { 3670 unsigned Bias = ELFT::Is64Bits ? 0 : 8; 3671 ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections()); 3672 OS << "There are " << to_string(Sections.size()) 3673 << " section headers, starting at offset " 3674 << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n"; 3675 OS << "Section Headers:\n"; 3676 Field Fields[11] = { 3677 {"[Nr]", 2}, {"Name", 7}, {"Type", 25}, 3678 {"Address", 41}, {"Off", 58 - Bias}, {"Size", 65 - Bias}, 3679 {"ES", 72 - Bias}, {"Flg", 75 - Bias}, {"Lk", 79 - Bias}, 3680 {"Inf", 82 - Bias}, {"Al", 86 - Bias}}; 3681 for (const Field &F : Fields) 3682 printField(F); 3683 OS << "\n"; 3684 3685 StringRef SecStrTable; 3686 if (Expected<StringRef> SecStrTableOrErr = 3687 this->Obj.getSectionStringTable(Sections, this->WarningHandler)) 3688 SecStrTable = *SecStrTableOrErr; 3689 else 3690 this->reportUniqueWarning(SecStrTableOrErr.takeError()); 3691 3692 size_t SectionIndex = 0; 3693 for (const Elf_Shdr &Sec : Sections) { 3694 Fields[0].Str = to_string(SectionIndex); 3695 if (SecStrTable.empty()) 3696 Fields[1].Str = "<no-strings>"; 3697 else 3698 Fields[1].Str = std::string(unwrapOrError<StringRef>( 3699 this->FileName, this->Obj.getSectionName(Sec, SecStrTable))); 3700 Fields[2].Str = 3701 getSectionTypeString(this->Obj.getHeader().e_machine, Sec.sh_type); 3702 Fields[3].Str = 3703 to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8)); 3704 Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 3705 Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 3706 Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 3707 Fields[7].Str = getGNUFlags(this->Obj.getHeader().e_ident[ELF::EI_OSABI], 3708 this->Obj.getHeader().e_machine, Sec.sh_flags); 3709 Fields[8].Str = to_string(Sec.sh_link); 3710 Fields[9].Str = to_string(Sec.sh_info); 3711 Fields[10].Str = to_string(Sec.sh_addralign); 3712 3713 OS.PadToColumn(Fields[0].Column); 3714 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 3715 for (int i = 1; i < 7; i++) 3716 printField(Fields[i]); 3717 OS.PadToColumn(Fields[7].Column); 3718 OS << right_justify(Fields[7].Str, 3); 3719 OS.PadToColumn(Fields[8].Column); 3720 OS << right_justify(Fields[8].Str, 2); 3721 OS.PadToColumn(Fields[9].Column); 3722 OS << right_justify(Fields[9].Str, 3); 3723 OS.PadToColumn(Fields[10].Column); 3724 OS << right_justify(Fields[10].Str, 2); 3725 OS << "\n"; 3726 ++SectionIndex; 3727 } 3728 printSectionDescription(OS, this->Obj.getHeader().e_machine); 3729 } 3730 3731 template <class ELFT> 3732 void GNUELFDumper<ELFT>::printSymtabMessage(const Elf_Shdr *Symtab, 3733 size_t Entries, 3734 bool NonVisibilityBitsUsed) const { 3735 StringRef Name; 3736 if (Symtab) 3737 Name = this->getPrintableSectionName(*Symtab); 3738 if (!Name.empty()) 3739 OS << "\nSymbol table '" << Name << "'"; 3740 else 3741 OS << "\nSymbol table for image"; 3742 OS << " contains " << Entries << " entries:\n"; 3743 3744 if (ELFT::Is64Bits) 3745 OS << " Num: Value Size Type Bind Vis"; 3746 else 3747 OS << " Num: Value Size Type Bind Vis"; 3748 3749 if (NonVisibilityBitsUsed) 3750 OS << " "; 3751 OS << " Ndx Name\n"; 3752 } 3753 3754 template <class ELFT> 3755 std::string 3756 GNUELFDumper<ELFT>::getSymbolSectionNdx(const Elf_Sym &Symbol, 3757 unsigned SymIndex, 3758 DataRegion<Elf_Word> ShndxTable) const { 3759 unsigned SectionIndex = Symbol.st_shndx; 3760 switch (SectionIndex) { 3761 case ELF::SHN_UNDEF: 3762 return "UND"; 3763 case ELF::SHN_ABS: 3764 return "ABS"; 3765 case ELF::SHN_COMMON: 3766 return "COM"; 3767 case ELF::SHN_XINDEX: { 3768 Expected<uint32_t> IndexOrErr = 3769 object::getExtendedSymbolTableIndex<ELFT>(Symbol, SymIndex, ShndxTable); 3770 if (!IndexOrErr) { 3771 assert(Symbol.st_shndx == SHN_XINDEX && 3772 "getExtendedSymbolTableIndex should only fail due to an invalid " 3773 "SHT_SYMTAB_SHNDX table/reference"); 3774 this->reportUniqueWarning(IndexOrErr.takeError()); 3775 return "RSV[0xffff]"; 3776 } 3777 return to_string(format_decimal(*IndexOrErr, 3)); 3778 } 3779 default: 3780 // Find if: 3781 // Processor specific 3782 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 3783 return std::string("PRC[0x") + 3784 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3785 // OS specific 3786 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 3787 return std::string("OS[0x") + 3788 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3789 // Architecture reserved: 3790 if (SectionIndex >= ELF::SHN_LORESERVE && 3791 SectionIndex <= ELF::SHN_HIRESERVE) 3792 return std::string("RSV[0x") + 3793 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3794 // A normal section with an index 3795 return to_string(format_decimal(SectionIndex, 3)); 3796 } 3797 } 3798 3799 template <class ELFT> 3800 void GNUELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, 3801 DataRegion<Elf_Word> ShndxTable, 3802 Optional<StringRef> StrTable, 3803 bool IsDynamic, 3804 bool NonVisibilityBitsUsed) const { 3805 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3806 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 3807 31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias}; 3808 Fields[0].Str = to_string(format_decimal(SymIndex, 6)) + ":"; 3809 Fields[1].Str = 3810 to_string(format_hex_no_prefix(Symbol.st_value, ELFT::Is64Bits ? 16 : 8)); 3811 Fields[2].Str = to_string(format_decimal(Symbol.st_size, 5)); 3812 3813 unsigned char SymbolType = Symbol.getType(); 3814 if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && 3815 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3816 Fields[3].Str = enumToString(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3817 else 3818 Fields[3].Str = enumToString(SymbolType, makeArrayRef(ElfSymbolTypes)); 3819 3820 Fields[4].Str = 3821 enumToString(Symbol.getBinding(), makeArrayRef(ElfSymbolBindings)); 3822 Fields[5].Str = 3823 enumToString(Symbol.getVisibility(), makeArrayRef(ElfSymbolVisibilities)); 3824 3825 if (Symbol.st_other & ~0x3) { 3826 if (this->Obj.getHeader().e_machine == ELF::EM_AARCH64) { 3827 uint8_t Other = Symbol.st_other & ~0x3; 3828 if (Other & STO_AARCH64_VARIANT_PCS) { 3829 Other &= ~STO_AARCH64_VARIANT_PCS; 3830 Fields[5].Str += " [VARIANT_PCS"; 3831 if (Other != 0) 3832 Fields[5].Str.append(" | " + to_hexString(Other, false)); 3833 Fields[5].Str.append("]"); 3834 } 3835 } else if (this->Obj.getHeader().e_machine == ELF::EM_RISCV) { 3836 uint8_t Other = Symbol.st_other & ~0x3; 3837 if (Other & STO_RISCV_VARIANT_CC) { 3838 Other &= ~STO_RISCV_VARIANT_CC; 3839 Fields[5].Str += " [VARIANT_CC"; 3840 if (Other != 0) 3841 Fields[5].Str.append(" | " + to_hexString(Other, false)); 3842 Fields[5].Str.append("]"); 3843 } 3844 } else { 3845 Fields[5].Str += 3846 " [<other: " + to_string(format_hex(Symbol.st_other, 2)) + ">]"; 3847 } 3848 } 3849 3850 Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0; 3851 Fields[6].Str = getSymbolSectionNdx(Symbol, SymIndex, ShndxTable); 3852 3853 Fields[7].Str = this->getFullSymbolName(Symbol, SymIndex, ShndxTable, 3854 StrTable, IsDynamic); 3855 for (const Field &Entry : Fields) 3856 printField(Entry); 3857 OS << "\n"; 3858 } 3859 3860 template <class ELFT> 3861 void GNUELFDumper<ELFT>::printHashedSymbol(const Elf_Sym *Symbol, 3862 unsigned SymIndex, 3863 DataRegion<Elf_Word> ShndxTable, 3864 StringRef StrTable, 3865 uint32_t Bucket) { 3866 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3867 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 3868 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 3869 Fields[0].Str = to_string(format_decimal(SymIndex, 5)); 3870 Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":"; 3871 3872 Fields[2].Str = to_string( 3873 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); 3874 Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5)); 3875 3876 unsigned char SymbolType = Symbol->getType(); 3877 if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && 3878 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3879 Fields[4].Str = enumToString(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3880 else 3881 Fields[4].Str = enumToString(SymbolType, makeArrayRef(ElfSymbolTypes)); 3882 3883 Fields[5].Str = 3884 enumToString(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3885 Fields[6].Str = enumToString(Symbol->getVisibility(), 3886 makeArrayRef(ElfSymbolVisibilities)); 3887 Fields[7].Str = getSymbolSectionNdx(*Symbol, SymIndex, ShndxTable); 3888 Fields[8].Str = 3889 this->getFullSymbolName(*Symbol, SymIndex, ShndxTable, StrTable, true); 3890 3891 for (const Field &Entry : Fields) 3892 printField(Entry); 3893 OS << "\n"; 3894 } 3895 3896 template <class ELFT> 3897 void GNUELFDumper<ELFT>::printSymbols(bool PrintSymbols, 3898 bool PrintDynamicSymbols) { 3899 if (!PrintSymbols && !PrintDynamicSymbols) 3900 return; 3901 // GNU readelf prints both the .dynsym and .symtab with --symbols. 3902 this->printSymbolsHelper(true); 3903 if (PrintSymbols) 3904 this->printSymbolsHelper(false); 3905 } 3906 3907 template <class ELFT> 3908 void GNUELFDumper<ELFT>::printHashTableSymbols(const Elf_Hash &SysVHash) { 3909 if (this->DynamicStringTable.empty()) 3910 return; 3911 3912 if (ELFT::Is64Bits) 3913 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3914 else 3915 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3916 OS << "\n"; 3917 3918 Elf_Sym_Range DynSyms = this->dynamic_symbols(); 3919 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 3920 if (!FirstSym) { 3921 this->reportUniqueWarning( 3922 Twine("unable to print symbols for the .hash table: the " 3923 "dynamic symbol table ") + 3924 (this->DynSymRegion ? "is empty" : "was not found")); 3925 return; 3926 } 3927 3928 DataRegion<Elf_Word> ShndxTable( 3929 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 3930 auto Buckets = SysVHash.buckets(); 3931 auto Chains = SysVHash.chains(); 3932 for (uint32_t Buc = 0; Buc < SysVHash.nbucket; Buc++) { 3933 if (Buckets[Buc] == ELF::STN_UNDEF) 3934 continue; 3935 BitVector Visited(SysVHash.nchain); 3936 for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash.nchain; Ch = Chains[Ch]) { 3937 if (Ch == ELF::STN_UNDEF) 3938 break; 3939 3940 if (Visited[Ch]) { 3941 this->reportUniqueWarning(".hash section is invalid: bucket " + 3942 Twine(Ch) + 3943 ": a cycle was detected in the linked chain"); 3944 break; 3945 } 3946 3947 printHashedSymbol(FirstSym + Ch, Ch, ShndxTable, this->DynamicStringTable, 3948 Buc); 3949 Visited[Ch] = true; 3950 } 3951 } 3952 } 3953 3954 template <class ELFT> 3955 void GNUELFDumper<ELFT>::printGnuHashTableSymbols(const Elf_GnuHash &GnuHash) { 3956 if (this->DynamicStringTable.empty()) 3957 return; 3958 3959 Elf_Sym_Range DynSyms = this->dynamic_symbols(); 3960 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 3961 if (!FirstSym) { 3962 this->reportUniqueWarning( 3963 Twine("unable to print symbols for the .gnu.hash table: the " 3964 "dynamic symbol table ") + 3965 (this->DynSymRegion ? "is empty" : "was not found")); 3966 return; 3967 } 3968 3969 auto GetSymbol = [&](uint64_t SymIndex, 3970 uint64_t SymsTotal) -> const Elf_Sym * { 3971 if (SymIndex >= SymsTotal) { 3972 this->reportUniqueWarning( 3973 "unable to print hashed symbol with index " + Twine(SymIndex) + 3974 ", which is greater than or equal to the number of dynamic symbols " 3975 "(" + 3976 Twine::utohexstr(SymsTotal) + ")"); 3977 return nullptr; 3978 } 3979 return FirstSym + SymIndex; 3980 }; 3981 3982 Expected<ArrayRef<Elf_Word>> ValuesOrErr = 3983 getGnuHashTableChains<ELFT>(this->DynSymRegion, &GnuHash); 3984 ArrayRef<Elf_Word> Values; 3985 if (!ValuesOrErr) 3986 this->reportUniqueWarning("unable to get hash values for the SHT_GNU_HASH " 3987 "section: " + 3988 toString(ValuesOrErr.takeError())); 3989 else 3990 Values = *ValuesOrErr; 3991 3992 DataRegion<Elf_Word> ShndxTable( 3993 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 3994 ArrayRef<Elf_Word> Buckets = GnuHash.buckets(); 3995 for (uint32_t Buc = 0; Buc < GnuHash.nbuckets; Buc++) { 3996 if (Buckets[Buc] == ELF::STN_UNDEF) 3997 continue; 3998 uint32_t Index = Buckets[Buc]; 3999 // Print whole chain. 4000 while (true) { 4001 uint32_t SymIndex = Index++; 4002 if (const Elf_Sym *Sym = GetSymbol(SymIndex, DynSyms.size())) 4003 printHashedSymbol(Sym, SymIndex, ShndxTable, this->DynamicStringTable, 4004 Buc); 4005 else 4006 break; 4007 4008 if (SymIndex < GnuHash.symndx) { 4009 this->reportUniqueWarning( 4010 "unable to read the hash value for symbol with index " + 4011 Twine(SymIndex) + 4012 ", which is less than the index of the first hashed symbol (" + 4013 Twine(GnuHash.symndx) + ")"); 4014 break; 4015 } 4016 4017 // Chain ends at symbol with stopper bit. 4018 if ((Values[SymIndex - GnuHash.symndx] & 1) == 1) 4019 break; 4020 } 4021 } 4022 } 4023 4024 template <class ELFT> void GNUELFDumper<ELFT>::printHashSymbols() { 4025 if (this->HashTable) { 4026 OS << "\n Symbol table of .hash for image:\n"; 4027 if (Error E = checkHashTable<ELFT>(*this, this->HashTable)) 4028 this->reportUniqueWarning(std::move(E)); 4029 else 4030 printHashTableSymbols(*this->HashTable); 4031 } 4032 4033 // Try printing the .gnu.hash table. 4034 if (this->GnuHashTable) { 4035 OS << "\n Symbol table of .gnu.hash for image:\n"; 4036 if (ELFT::Is64Bits) 4037 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4038 else 4039 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4040 OS << "\n"; 4041 4042 if (Error E = checkGNUHashTable<ELFT>(this->Obj, this->GnuHashTable)) 4043 this->reportUniqueWarning(std::move(E)); 4044 else 4045 printGnuHashTableSymbols(*this->GnuHashTable); 4046 } 4047 } 4048 4049 template <class ELFT> void GNUELFDumper<ELFT>::printSectionDetails() { 4050 ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections()); 4051 OS << "There are " << to_string(Sections.size()) 4052 << " section headers, starting at offset " 4053 << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n"; 4054 4055 OS << "Section Headers:\n"; 4056 4057 auto PrintFields = [&](ArrayRef<Field> V) { 4058 for (const Field &F : V) 4059 printField(F); 4060 OS << "\n"; 4061 }; 4062 4063 PrintFields({{"[Nr]", 2}, {"Name", 7}}); 4064 4065 constexpr bool Is64 = ELFT::Is64Bits; 4066 PrintFields({{"Type", 7}, 4067 {Is64 ? "Address" : "Addr", 23}, 4068 {"Off", Is64 ? 40 : 32}, 4069 {"Size", Is64 ? 47 : 39}, 4070 {"ES", Is64 ? 54 : 46}, 4071 {"Lk", Is64 ? 59 : 51}, 4072 {"Inf", Is64 ? 62 : 54}, 4073 {"Al", Is64 ? 66 : 57}}); 4074 PrintFields({{"Flags", 7}}); 4075 4076 StringRef SecStrTable; 4077 if (Expected<StringRef> SecStrTableOrErr = 4078 this->Obj.getSectionStringTable(Sections, this->WarningHandler)) 4079 SecStrTable = *SecStrTableOrErr; 4080 else 4081 this->reportUniqueWarning(SecStrTableOrErr.takeError()); 4082 4083 size_t SectionIndex = 0; 4084 const unsigned AddrSize = Is64 ? 16 : 8; 4085 for (const Elf_Shdr &S : Sections) { 4086 StringRef Name = "<?>"; 4087 if (Expected<StringRef> NameOrErr = 4088 this->Obj.getSectionName(S, SecStrTable)) 4089 Name = *NameOrErr; 4090 else 4091 this->reportUniqueWarning(NameOrErr.takeError()); 4092 4093 OS.PadToColumn(2); 4094 OS << "[" << right_justify(to_string(SectionIndex), 2) << "]"; 4095 PrintFields({{Name, 7}}); 4096 PrintFields( 4097 {{getSectionTypeString(this->Obj.getHeader().e_machine, S.sh_type), 7}, 4098 {to_string(format_hex_no_prefix(S.sh_addr, AddrSize)), 23}, 4099 {to_string(format_hex_no_prefix(S.sh_offset, 6)), Is64 ? 39 : 32}, 4100 {to_string(format_hex_no_prefix(S.sh_size, 6)), Is64 ? 47 : 39}, 4101 {to_string(format_hex_no_prefix(S.sh_entsize, 2)), Is64 ? 54 : 46}, 4102 {to_string(S.sh_link), Is64 ? 59 : 51}, 4103 {to_string(S.sh_info), Is64 ? 63 : 55}, 4104 {to_string(S.sh_addralign), Is64 ? 66 : 58}}); 4105 4106 OS.PadToColumn(7); 4107 OS << "[" << to_string(format_hex_no_prefix(S.sh_flags, AddrSize)) << "]: "; 4108 4109 DenseMap<unsigned, StringRef> FlagToName = { 4110 {SHF_WRITE, "WRITE"}, {SHF_ALLOC, "ALLOC"}, 4111 {SHF_EXECINSTR, "EXEC"}, {SHF_MERGE, "MERGE"}, 4112 {SHF_STRINGS, "STRINGS"}, {SHF_INFO_LINK, "INFO LINK"}, 4113 {SHF_LINK_ORDER, "LINK ORDER"}, {SHF_OS_NONCONFORMING, "OS NONCONF"}, 4114 {SHF_GROUP, "GROUP"}, {SHF_TLS, "TLS"}, 4115 {SHF_COMPRESSED, "COMPRESSED"}, {SHF_EXCLUDE, "EXCLUDE"}}; 4116 4117 uint64_t Flags = S.sh_flags; 4118 uint64_t UnknownFlags = 0; 4119 ListSeparator LS; 4120 while (Flags) { 4121 // Take the least significant bit as a flag. 4122 uint64_t Flag = Flags & -Flags; 4123 Flags -= Flag; 4124 4125 auto It = FlagToName.find(Flag); 4126 if (It != FlagToName.end()) 4127 OS << LS << It->second; 4128 else 4129 UnknownFlags |= Flag; 4130 } 4131 4132 auto PrintUnknownFlags = [&](uint64_t Mask, StringRef Name) { 4133 uint64_t FlagsToPrint = UnknownFlags & Mask; 4134 if (!FlagsToPrint) 4135 return; 4136 4137 OS << LS << Name << " (" 4138 << to_string(format_hex_no_prefix(FlagsToPrint, AddrSize)) << ")"; 4139 UnknownFlags &= ~Mask; 4140 }; 4141 4142 PrintUnknownFlags(SHF_MASKOS, "OS"); 4143 PrintUnknownFlags(SHF_MASKPROC, "PROC"); 4144 PrintUnknownFlags(uint64_t(-1), "UNKNOWN"); 4145 4146 OS << "\n"; 4147 ++SectionIndex; 4148 } 4149 } 4150 4151 static inline std::string printPhdrFlags(unsigned Flag) { 4152 std::string Str; 4153 Str = (Flag & PF_R) ? "R" : " "; 4154 Str += (Flag & PF_W) ? "W" : " "; 4155 Str += (Flag & PF_X) ? "E" : " "; 4156 return Str; 4157 } 4158 4159 template <class ELFT> 4160 static bool checkTLSSections(const typename ELFT::Phdr &Phdr, 4161 const typename ELFT::Shdr &Sec) { 4162 if (Sec.sh_flags & ELF::SHF_TLS) { 4163 // .tbss must only be shown in the PT_TLS segment. 4164 if (Sec.sh_type == ELF::SHT_NOBITS) 4165 return Phdr.p_type == ELF::PT_TLS; 4166 4167 // SHF_TLS sections are only shown in PT_TLS, PT_LOAD or PT_GNU_RELRO 4168 // segments. 4169 return (Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 4170 (Phdr.p_type == ELF::PT_GNU_RELRO); 4171 } 4172 4173 // PT_TLS must only have SHF_TLS sections. 4174 return Phdr.p_type != ELF::PT_TLS; 4175 } 4176 4177 template <class ELFT> 4178 static bool checkOffsets(const typename ELFT::Phdr &Phdr, 4179 const typename ELFT::Shdr &Sec) { 4180 // SHT_NOBITS sections don't need to have an offset inside the segment. 4181 if (Sec.sh_type == ELF::SHT_NOBITS) 4182 return true; 4183 4184 if (Sec.sh_offset < Phdr.p_offset) 4185 return false; 4186 4187 // Only non-empty sections can be at the end of a segment. 4188 if (Sec.sh_size == 0) 4189 return (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz); 4190 return Sec.sh_offset + Sec.sh_size <= Phdr.p_offset + Phdr.p_filesz; 4191 } 4192 4193 // Check that an allocatable section belongs to a virtual address 4194 // space of a segment. 4195 template <class ELFT> 4196 static bool checkVMA(const typename ELFT::Phdr &Phdr, 4197 const typename ELFT::Shdr &Sec) { 4198 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 4199 return true; 4200 4201 if (Sec.sh_addr < Phdr.p_vaddr) 4202 return false; 4203 4204 bool IsTbss = 4205 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 4206 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties. 4207 bool IsTbssInNonTLS = IsTbss && Phdr.p_type != ELF::PT_TLS; 4208 // Only non-empty sections can be at the end of a segment. 4209 if (Sec.sh_size == 0 || IsTbssInNonTLS) 4210 return Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz; 4211 return Sec.sh_addr + Sec.sh_size <= Phdr.p_vaddr + Phdr.p_memsz; 4212 } 4213 4214 template <class ELFT> 4215 static bool checkPTDynamic(const typename ELFT::Phdr &Phdr, 4216 const typename ELFT::Shdr &Sec) { 4217 if (Phdr.p_type != ELF::PT_DYNAMIC || Phdr.p_memsz == 0 || Sec.sh_size != 0) 4218 return true; 4219 4220 // We get here when we have an empty section. Only non-empty sections can be 4221 // at the start or at the end of PT_DYNAMIC. 4222 // Is section within the phdr both based on offset and VMA? 4223 bool CheckOffset = (Sec.sh_type == ELF::SHT_NOBITS) || 4224 (Sec.sh_offset > Phdr.p_offset && 4225 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz); 4226 bool CheckVA = !(Sec.sh_flags & ELF::SHF_ALLOC) || 4227 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz); 4228 return CheckOffset && CheckVA; 4229 } 4230 4231 template <class ELFT> 4232 void GNUELFDumper<ELFT>::printProgramHeaders( 4233 bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { 4234 if (PrintProgramHeaders) 4235 printProgramHeaders(); 4236 4237 // Display the section mapping along with the program headers, unless 4238 // -section-mapping is explicitly set to false. 4239 if (PrintSectionMapping != cl::BOU_FALSE) 4240 printSectionMapping(); 4241 } 4242 4243 template <class ELFT> void GNUELFDumper<ELFT>::printProgramHeaders() { 4244 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4245 const Elf_Ehdr &Header = this->Obj.getHeader(); 4246 Field Fields[8] = {2, 17, 26, 37 + Bias, 4247 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 4248 OS << "\nElf file type is " 4249 << enumToString(Header.e_type, makeArrayRef(ElfObjectFileType)) << "\n" 4250 << "Entry point " << format_hex(Header.e_entry, 3) << "\n" 4251 << "There are " << Header.e_phnum << " program headers," 4252 << " starting at offset " << Header.e_phoff << "\n\n" 4253 << "Program Headers:\n"; 4254 if (ELFT::Is64Bits) 4255 OS << " Type Offset VirtAddr PhysAddr " 4256 << " FileSiz MemSiz Flg Align\n"; 4257 else 4258 OS << " Type Offset VirtAddr PhysAddr FileSiz " 4259 << "MemSiz Flg Align\n"; 4260 4261 unsigned Width = ELFT::Is64Bits ? 18 : 10; 4262 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 4263 4264 Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); 4265 if (!PhdrsOrErr) { 4266 this->reportUniqueWarning("unable to dump program headers: " + 4267 toString(PhdrsOrErr.takeError())); 4268 return; 4269 } 4270 4271 for (const Elf_Phdr &Phdr : *PhdrsOrErr) { 4272 Fields[0].Str = getGNUPtType(Header.e_machine, Phdr.p_type); 4273 Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8)); 4274 Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width)); 4275 Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width)); 4276 Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 4277 Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 4278 Fields[6].Str = printPhdrFlags(Phdr.p_flags); 4279 Fields[7].Str = to_string(format_hex(Phdr.p_align, 1)); 4280 for (const Field &F : Fields) 4281 printField(F); 4282 if (Phdr.p_type == ELF::PT_INTERP) { 4283 OS << "\n"; 4284 auto ReportBadInterp = [&](const Twine &Msg) { 4285 this->reportUniqueWarning( 4286 "unable to read program interpreter name at offset 0x" + 4287 Twine::utohexstr(Phdr.p_offset) + ": " + Msg); 4288 }; 4289 4290 if (Phdr.p_offset >= this->Obj.getBufSize()) { 4291 ReportBadInterp("it goes past the end of the file (0x" + 4292 Twine::utohexstr(this->Obj.getBufSize()) + ")"); 4293 continue; 4294 } 4295 4296 const char *Data = 4297 reinterpret_cast<const char *>(this->Obj.base()) + Phdr.p_offset; 4298 size_t MaxSize = this->Obj.getBufSize() - Phdr.p_offset; 4299 size_t Len = strnlen(Data, MaxSize); 4300 if (Len == MaxSize) { 4301 ReportBadInterp("it is not null-terminated"); 4302 continue; 4303 } 4304 4305 OS << " [Requesting program interpreter: "; 4306 OS << StringRef(Data, Len) << "]"; 4307 } 4308 OS << "\n"; 4309 } 4310 } 4311 4312 template <class ELFT> void GNUELFDumper<ELFT>::printSectionMapping() { 4313 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 4314 DenseSet<const Elf_Shdr *> BelongsToSegment; 4315 int Phnum = 0; 4316 4317 Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); 4318 if (!PhdrsOrErr) { 4319 this->reportUniqueWarning( 4320 "can't read program headers to build section to segment mapping: " + 4321 toString(PhdrsOrErr.takeError())); 4322 return; 4323 } 4324 4325 for (const Elf_Phdr &Phdr : *PhdrsOrErr) { 4326 std::string Sections; 4327 OS << format(" %2.2d ", Phnum++); 4328 // Check if each section is in a segment and then print mapping. 4329 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 4330 if (Sec.sh_type == ELF::SHT_NULL) 4331 continue; 4332 4333 // readelf additionally makes sure it does not print zero sized sections 4334 // at end of segments and for PT_DYNAMIC both start and end of section 4335 // .tbss must only be shown in PT_TLS section. 4336 if (checkTLSSections<ELFT>(Phdr, Sec) && checkOffsets<ELFT>(Phdr, Sec) && 4337 checkVMA<ELFT>(Phdr, Sec) && checkPTDynamic<ELFT>(Phdr, Sec)) { 4338 Sections += 4339 unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() + 4340 " "; 4341 BelongsToSegment.insert(&Sec); 4342 } 4343 } 4344 OS << Sections << "\n"; 4345 OS.flush(); 4346 } 4347 4348 // Display sections that do not belong to a segment. 4349 std::string Sections; 4350 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 4351 if (BelongsToSegment.find(&Sec) == BelongsToSegment.end()) 4352 Sections += 4353 unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() + 4354 ' '; 4355 } 4356 if (!Sections.empty()) { 4357 OS << " None " << Sections << '\n'; 4358 OS.flush(); 4359 } 4360 } 4361 4362 namespace { 4363 4364 template <class ELFT> 4365 RelSymbol<ELFT> getSymbolForReloc(const ELFDumper<ELFT> &Dumper, 4366 const Relocation<ELFT> &Reloc) { 4367 using Elf_Sym = typename ELFT::Sym; 4368 auto WarnAndReturn = [&](const Elf_Sym *Sym, 4369 const Twine &Reason) -> RelSymbol<ELFT> { 4370 Dumper.reportUniqueWarning( 4371 "unable to get name of the dynamic symbol with index " + 4372 Twine(Reloc.Symbol) + ": " + Reason); 4373 return {Sym, "<corrupt>"}; 4374 }; 4375 4376 ArrayRef<Elf_Sym> Symbols = Dumper.dynamic_symbols(); 4377 const Elf_Sym *FirstSym = Symbols.begin(); 4378 if (!FirstSym) 4379 return WarnAndReturn(nullptr, "no dynamic symbol table found"); 4380 4381 // We might have an object without a section header. In this case the size of 4382 // Symbols is zero, because there is no way to know the size of the dynamic 4383 // table. We should allow this case and not print a warning. 4384 if (!Symbols.empty() && Reloc.Symbol >= Symbols.size()) 4385 return WarnAndReturn( 4386 nullptr, 4387 "index is greater than or equal to the number of dynamic symbols (" + 4388 Twine(Symbols.size()) + ")"); 4389 4390 const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile(); 4391 const uint64_t FileSize = Obj.getBufSize(); 4392 const uint64_t SymOffset = ((const uint8_t *)FirstSym - Obj.base()) + 4393 (uint64_t)Reloc.Symbol * sizeof(Elf_Sym); 4394 if (SymOffset + sizeof(Elf_Sym) > FileSize) 4395 return WarnAndReturn(nullptr, "symbol at 0x" + Twine::utohexstr(SymOffset) + 4396 " goes past the end of the file (0x" + 4397 Twine::utohexstr(FileSize) + ")"); 4398 4399 const Elf_Sym *Sym = FirstSym + Reloc.Symbol; 4400 Expected<StringRef> ErrOrName = Sym->getName(Dumper.getDynamicStringTable()); 4401 if (!ErrOrName) 4402 return WarnAndReturn(Sym, toString(ErrOrName.takeError())); 4403 4404 return {Sym == FirstSym ? nullptr : Sym, maybeDemangle(*ErrOrName)}; 4405 } 4406 } // namespace 4407 4408 template <class ELFT> 4409 static size_t getMaxDynamicTagSize(const ELFFile<ELFT> &Obj, 4410 typename ELFT::DynRange Tags) { 4411 size_t Max = 0; 4412 for (const typename ELFT::Dyn &Dyn : Tags) 4413 Max = std::max(Max, Obj.getDynamicTagAsString(Dyn.d_tag).size()); 4414 return Max; 4415 } 4416 4417 template <class ELFT> void GNUELFDumper<ELFT>::printDynamicTable() { 4418 Elf_Dyn_Range Table = this->dynamic_table(); 4419 if (Table.empty()) 4420 return; 4421 4422 OS << "Dynamic section at offset " 4423 << format_hex(reinterpret_cast<const uint8_t *>(this->DynamicTable.Addr) - 4424 this->Obj.base(), 4425 1) 4426 << " contains " << Table.size() << " entries:\n"; 4427 4428 // The type name is surrounded with round brackets, hence add 2. 4429 size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table) + 2; 4430 // The "Name/Value" column should be indented from the "Type" column by N 4431 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 4432 // space (1) = 3. 4433 OS << " Tag" + std::string(ELFT::Is64Bits ? 16 : 8, ' ') + "Type" 4434 << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 4435 4436 std::string ValueFmt = " %-" + std::to_string(MaxTagSize) + "s "; 4437 for (auto Entry : Table) { 4438 uintX_t Tag = Entry.getTag(); 4439 std::string Type = 4440 std::string("(") + this->Obj.getDynamicTagAsString(Tag) + ")"; 4441 std::string Value = this->getDynamicEntry(Tag, Entry.getVal()); 4442 OS << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10) 4443 << format(ValueFmt.c_str(), Type.c_str()) << Value << "\n"; 4444 } 4445 } 4446 4447 template <class ELFT> void GNUELFDumper<ELFT>::printDynamicRelocations() { 4448 this->printDynamicRelocationsHelper(); 4449 } 4450 4451 template <class ELFT> 4452 void ELFDumper<ELFT>::printDynamicReloc(const Relocation<ELFT> &R) { 4453 printRelRelaReloc(R, getSymbolForReloc(*this, R)); 4454 } 4455 4456 template <class ELFT> 4457 void ELFDumper<ELFT>::printRelocationsHelper(const Elf_Shdr &Sec) { 4458 this->forEachRelocationDo( 4459 Sec, opts::RawRelr, 4460 [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec, 4461 const Elf_Shdr *SymTab) { printReloc(R, Ndx, Sec, SymTab); }, 4462 [&](const Elf_Relr &R) { printRelrReloc(R); }); 4463 } 4464 4465 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocationsHelper() { 4466 const bool IsMips64EL = this->Obj.isMips64EL(); 4467 if (this->DynRelaRegion.Size > 0) { 4468 printDynamicRelocHeader(ELF::SHT_RELA, "RELA", this->DynRelaRegion); 4469 for (const Elf_Rela &Rela : 4470 this->DynRelaRegion.template getAsArrayRef<Elf_Rela>()) 4471 printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL)); 4472 } 4473 4474 if (this->DynRelRegion.Size > 0) { 4475 printDynamicRelocHeader(ELF::SHT_REL, "REL", this->DynRelRegion); 4476 for (const Elf_Rel &Rel : 4477 this->DynRelRegion.template getAsArrayRef<Elf_Rel>()) 4478 printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); 4479 } 4480 4481 if (this->DynRelrRegion.Size > 0) { 4482 printDynamicRelocHeader(ELF::SHT_REL, "RELR", this->DynRelrRegion); 4483 Elf_Relr_Range Relrs = 4484 this->DynRelrRegion.template getAsArrayRef<Elf_Relr>(); 4485 for (const Elf_Rel &Rel : Obj.decode_relrs(Relrs)) 4486 printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); 4487 } 4488 4489 if (this->DynPLTRelRegion.Size) { 4490 if (this->DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 4491 printDynamicRelocHeader(ELF::SHT_RELA, "PLT", this->DynPLTRelRegion); 4492 for (const Elf_Rela &Rela : 4493 this->DynPLTRelRegion.template getAsArrayRef<Elf_Rela>()) 4494 printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL)); 4495 } else { 4496 printDynamicRelocHeader(ELF::SHT_REL, "PLT", this->DynPLTRelRegion); 4497 for (const Elf_Rel &Rel : 4498 this->DynPLTRelRegion.template getAsArrayRef<Elf_Rel>()) 4499 printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL)); 4500 } 4501 } 4502 } 4503 4504 template <class ELFT> 4505 void GNUELFDumper<ELFT>::printGNUVersionSectionProlog( 4506 const typename ELFT::Shdr &Sec, const Twine &Label, unsigned EntriesNum) { 4507 // Don't inline the SecName, because it might report a warning to stderr and 4508 // corrupt the output. 4509 StringRef SecName = this->getPrintableSectionName(Sec); 4510 OS << Label << " section '" << SecName << "' " 4511 << "contains " << EntriesNum << " entries:\n"; 4512 4513 StringRef LinkedSecName = "<corrupt>"; 4514 if (Expected<const typename ELFT::Shdr *> LinkedSecOrErr = 4515 this->Obj.getSection(Sec.sh_link)) 4516 LinkedSecName = this->getPrintableSectionName(**LinkedSecOrErr); 4517 else 4518 this->reportUniqueWarning("invalid section linked to " + 4519 this->describe(Sec) + ": " + 4520 toString(LinkedSecOrErr.takeError())); 4521 4522 OS << " Addr: " << format_hex_no_prefix(Sec.sh_addr, 16) 4523 << " Offset: " << format_hex(Sec.sh_offset, 8) 4524 << " Link: " << Sec.sh_link << " (" << LinkedSecName << ")\n"; 4525 } 4526 4527 template <class ELFT> 4528 void GNUELFDumper<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) { 4529 if (!Sec) 4530 return; 4531 4532 printGNUVersionSectionProlog(*Sec, "Version symbols", 4533 Sec->sh_size / sizeof(Elf_Versym)); 4534 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 4535 this->getVersionTable(*Sec, /*SymTab=*/nullptr, 4536 /*StrTab=*/nullptr, /*SymTabSec=*/nullptr); 4537 if (!VerTableOrErr) { 4538 this->reportUniqueWarning(VerTableOrErr.takeError()); 4539 return; 4540 } 4541 4542 SmallVector<Optional<VersionEntry>, 0> *VersionMap = nullptr; 4543 if (Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr = 4544 this->getVersionMap()) 4545 VersionMap = *MapOrErr; 4546 else 4547 this->reportUniqueWarning(MapOrErr.takeError()); 4548 4549 ArrayRef<Elf_Versym> VerTable = *VerTableOrErr; 4550 std::vector<StringRef> Versions; 4551 for (size_t I = 0, E = VerTable.size(); I < E; ++I) { 4552 unsigned Ndx = VerTable[I].vs_index; 4553 if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) { 4554 Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*"); 4555 continue; 4556 } 4557 4558 if (!VersionMap) { 4559 Versions.emplace_back("<corrupt>"); 4560 continue; 4561 } 4562 4563 bool IsDefault; 4564 Expected<StringRef> NameOrErr = this->Obj.getSymbolVersionByIndex( 4565 Ndx, IsDefault, *VersionMap, /*IsSymHidden=*/None); 4566 if (!NameOrErr) { 4567 this->reportUniqueWarning("unable to get a version for entry " + 4568 Twine(I) + " of " + this->describe(*Sec) + 4569 ": " + toString(NameOrErr.takeError())); 4570 Versions.emplace_back("<corrupt>"); 4571 continue; 4572 } 4573 Versions.emplace_back(*NameOrErr); 4574 } 4575 4576 // readelf prints 4 entries per line. 4577 uint64_t Entries = VerTable.size(); 4578 for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) { 4579 OS << " " << format_hex_no_prefix(VersymRow, 3) << ":"; 4580 for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) { 4581 unsigned Ndx = VerTable[VersymRow + I].vs_index; 4582 OS << format("%4x%c", Ndx & VERSYM_VERSION, 4583 Ndx & VERSYM_HIDDEN ? 'h' : ' '); 4584 OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13); 4585 } 4586 OS << '\n'; 4587 } 4588 OS << '\n'; 4589 } 4590 4591 static std::string versionFlagToString(unsigned Flags) { 4592 if (Flags == 0) 4593 return "none"; 4594 4595 std::string Ret; 4596 auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) { 4597 if (!(Flags & Flag)) 4598 return; 4599 if (!Ret.empty()) 4600 Ret += " | "; 4601 Ret += Name; 4602 Flags &= ~Flag; 4603 }; 4604 4605 AddFlag(VER_FLG_BASE, "BASE"); 4606 AddFlag(VER_FLG_WEAK, "WEAK"); 4607 AddFlag(VER_FLG_INFO, "INFO"); 4608 AddFlag(~0, "<unknown>"); 4609 return Ret; 4610 } 4611 4612 template <class ELFT> 4613 void GNUELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) { 4614 if (!Sec) 4615 return; 4616 4617 printGNUVersionSectionProlog(*Sec, "Version definition", Sec->sh_info); 4618 4619 Expected<std::vector<VerDef>> V = this->Obj.getVersionDefinitions(*Sec); 4620 if (!V) { 4621 this->reportUniqueWarning(V.takeError()); 4622 return; 4623 } 4624 4625 for (const VerDef &Def : *V) { 4626 OS << format(" 0x%04x: Rev: %u Flags: %s Index: %u Cnt: %u Name: %s\n", 4627 Def.Offset, Def.Version, 4628 versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt, 4629 Def.Name.data()); 4630 unsigned I = 0; 4631 for (const VerdAux &Aux : Def.AuxV) 4632 OS << format(" 0x%04x: Parent %u: %s\n", Aux.Offset, ++I, 4633 Aux.Name.data()); 4634 } 4635 4636 OS << '\n'; 4637 } 4638 4639 template <class ELFT> 4640 void GNUELFDumper<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) { 4641 if (!Sec) 4642 return; 4643 4644 unsigned VerneedNum = Sec->sh_info; 4645 printGNUVersionSectionProlog(*Sec, "Version needs", VerneedNum); 4646 4647 Expected<std::vector<VerNeed>> V = 4648 this->Obj.getVersionDependencies(*Sec, this->WarningHandler); 4649 if (!V) { 4650 this->reportUniqueWarning(V.takeError()); 4651 return; 4652 } 4653 4654 for (const VerNeed &VN : *V) { 4655 OS << format(" 0x%04x: Version: %u File: %s Cnt: %u\n", VN.Offset, 4656 VN.Version, VN.File.data(), VN.Cnt); 4657 for (const VernAux &Aux : VN.AuxV) 4658 OS << format(" 0x%04x: Name: %s Flags: %s Version: %u\n", Aux.Offset, 4659 Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(), 4660 Aux.Other); 4661 } 4662 OS << '\n'; 4663 } 4664 4665 template <class ELFT> 4666 void GNUELFDumper<ELFT>::printHashHistogram(const Elf_Hash &HashTable) { 4667 size_t NBucket = HashTable.nbucket; 4668 size_t NChain = HashTable.nchain; 4669 ArrayRef<Elf_Word> Buckets = HashTable.buckets(); 4670 ArrayRef<Elf_Word> Chains = HashTable.chains(); 4671 size_t TotalSyms = 0; 4672 // If hash table is correct, we have at least chains with 0 length 4673 size_t MaxChain = 1; 4674 size_t CumulativeNonZero = 0; 4675 4676 if (NChain == 0 || NBucket == 0) 4677 return; 4678 4679 std::vector<size_t> ChainLen(NBucket, 0); 4680 // Go over all buckets and and note chain lengths of each bucket (total 4681 // unique chain lengths). 4682 for (size_t B = 0; B < NBucket; B++) { 4683 BitVector Visited(NChain); 4684 for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) { 4685 if (C == ELF::STN_UNDEF) 4686 break; 4687 if (Visited[C]) { 4688 this->reportUniqueWarning(".hash section is invalid: bucket " + 4689 Twine(C) + 4690 ": a cycle was detected in the linked chain"); 4691 break; 4692 } 4693 Visited[C] = true; 4694 if (MaxChain <= ++ChainLen[B]) 4695 MaxChain++; 4696 } 4697 TotalSyms += ChainLen[B]; 4698 } 4699 4700 if (!TotalSyms) 4701 return; 4702 4703 std::vector<size_t> Count(MaxChain, 0); 4704 // Count how long is the chain for each bucket 4705 for (size_t B = 0; B < NBucket; B++) 4706 ++Count[ChainLen[B]]; 4707 // Print Number of buckets with each chain lengths and their cumulative 4708 // coverage of the symbols 4709 OS << "Histogram for bucket list length (total of " << NBucket 4710 << " buckets)\n" 4711 << " Length Number % of total Coverage\n"; 4712 for (size_t I = 0; I < MaxChain; I++) { 4713 CumulativeNonZero += Count[I] * I; 4714 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4715 (Count[I] * 100.0) / NBucket, 4716 (CumulativeNonZero * 100.0) / TotalSyms); 4717 } 4718 } 4719 4720 template <class ELFT> 4721 void GNUELFDumper<ELFT>::printGnuHashHistogram( 4722 const Elf_GnuHash &GnuHashTable) { 4723 Expected<ArrayRef<Elf_Word>> ChainsOrErr = 4724 getGnuHashTableChains<ELFT>(this->DynSymRegion, &GnuHashTable); 4725 if (!ChainsOrErr) { 4726 this->reportUniqueWarning("unable to print the GNU hash table histogram: " + 4727 toString(ChainsOrErr.takeError())); 4728 return; 4729 } 4730 4731 ArrayRef<Elf_Word> Chains = *ChainsOrErr; 4732 size_t Symndx = GnuHashTable.symndx; 4733 size_t TotalSyms = 0; 4734 size_t MaxChain = 1; 4735 size_t CumulativeNonZero = 0; 4736 4737 size_t NBucket = GnuHashTable.nbuckets; 4738 if (Chains.empty() || NBucket == 0) 4739 return; 4740 4741 ArrayRef<Elf_Word> Buckets = GnuHashTable.buckets(); 4742 std::vector<size_t> ChainLen(NBucket, 0); 4743 for (size_t B = 0; B < NBucket; B++) { 4744 if (!Buckets[B]) 4745 continue; 4746 size_t Len = 1; 4747 for (size_t C = Buckets[B] - Symndx; 4748 C < Chains.size() && (Chains[C] & 1) == 0; C++) 4749 if (MaxChain < ++Len) 4750 MaxChain++; 4751 ChainLen[B] = Len; 4752 TotalSyms += Len; 4753 } 4754 MaxChain++; 4755 4756 if (!TotalSyms) 4757 return; 4758 4759 std::vector<size_t> Count(MaxChain, 0); 4760 for (size_t B = 0; B < NBucket; B++) 4761 ++Count[ChainLen[B]]; 4762 // Print Number of buckets with each chain lengths and their cumulative 4763 // coverage of the symbols 4764 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 4765 << " buckets)\n" 4766 << " Length Number % of total Coverage\n"; 4767 for (size_t I = 0; I < MaxChain; I++) { 4768 CumulativeNonZero += Count[I] * I; 4769 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4770 (Count[I] * 100.0) / NBucket, 4771 (CumulativeNonZero * 100.0) / TotalSyms); 4772 } 4773 } 4774 4775 // Hash histogram shows statistics of how efficient the hash was for the 4776 // dynamic symbol table. The table shows the number of hash buckets for 4777 // different lengths of chains as an absolute number and percentage of the total 4778 // buckets, and the cumulative coverage of symbols for each set of buckets. 4779 template <class ELFT> void GNUELFDumper<ELFT>::printHashHistograms() { 4780 // Print histogram for the .hash section. 4781 if (this->HashTable) { 4782 if (Error E = checkHashTable<ELFT>(*this, this->HashTable)) 4783 this->reportUniqueWarning(std::move(E)); 4784 else 4785 printHashHistogram(*this->HashTable); 4786 } 4787 4788 // Print histogram for the .gnu.hash section. 4789 if (this->GnuHashTable) { 4790 if (Error E = checkGNUHashTable<ELFT>(this->Obj, this->GnuHashTable)) 4791 this->reportUniqueWarning(std::move(E)); 4792 else 4793 printGnuHashHistogram(*this->GnuHashTable); 4794 } 4795 } 4796 4797 template <class ELFT> void GNUELFDumper<ELFT>::printCGProfile() { 4798 OS << "GNUStyle::printCGProfile not implemented\n"; 4799 } 4800 4801 template <class ELFT> void GNUELFDumper<ELFT>::printBBAddrMaps() { 4802 OS << "GNUStyle::printBBAddrMaps not implemented\n"; 4803 } 4804 4805 static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) { 4806 std::vector<uint64_t> Ret; 4807 const uint8_t *Cur = Data.begin(); 4808 const uint8_t *End = Data.end(); 4809 while (Cur != End) { 4810 unsigned Size; 4811 const char *Err; 4812 Ret.push_back(decodeULEB128(Cur, &Size, End, &Err)); 4813 if (Err) 4814 return createError(Err); 4815 Cur += Size; 4816 } 4817 return Ret; 4818 } 4819 4820 template <class ELFT> 4821 static Expected<std::vector<uint64_t>> 4822 decodeAddrsigSection(const ELFFile<ELFT> &Obj, const typename ELFT::Shdr &Sec) { 4823 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Sec); 4824 if (!ContentsOrErr) 4825 return ContentsOrErr.takeError(); 4826 4827 if (Expected<std::vector<uint64_t>> SymsOrErr = 4828 toULEB128Array(*ContentsOrErr)) 4829 return *SymsOrErr; 4830 else 4831 return createError("unable to decode " + describe(Obj, Sec) + ": " + 4832 toString(SymsOrErr.takeError())); 4833 } 4834 4835 template <class ELFT> void GNUELFDumper<ELFT>::printAddrsig() { 4836 if (!this->DotAddrsigSec) 4837 return; 4838 4839 Expected<std::vector<uint64_t>> SymsOrErr = 4840 decodeAddrsigSection(this->Obj, *this->DotAddrsigSec); 4841 if (!SymsOrErr) { 4842 this->reportUniqueWarning(SymsOrErr.takeError()); 4843 return; 4844 } 4845 4846 StringRef Name = this->getPrintableSectionName(*this->DotAddrsigSec); 4847 OS << "\nAddress-significant symbols section '" << Name << "'" 4848 << " contains " << SymsOrErr->size() << " entries:\n"; 4849 OS << " Num: Name\n"; 4850 4851 Field Fields[2] = {0, 8}; 4852 size_t SymIndex = 0; 4853 for (uint64_t Sym : *SymsOrErr) { 4854 Fields[0].Str = to_string(format_decimal(++SymIndex, 6)) + ":"; 4855 Fields[1].Str = this->getStaticSymbolName(Sym); 4856 for (const Field &Entry : Fields) 4857 printField(Entry); 4858 OS << "\n"; 4859 } 4860 } 4861 4862 template <typename ELFT> 4863 static std::string getGNUProperty(uint32_t Type, uint32_t DataSize, 4864 ArrayRef<uint8_t> Data) { 4865 std::string str; 4866 raw_string_ostream OS(str); 4867 uint32_t PrData; 4868 auto DumpBit = [&](uint32_t Flag, StringRef Name) { 4869 if (PrData & Flag) { 4870 PrData &= ~Flag; 4871 OS << Name; 4872 if (PrData) 4873 OS << ", "; 4874 } 4875 }; 4876 4877 switch (Type) { 4878 default: 4879 OS << format("<application-specific type 0x%x>", Type); 4880 return OS.str(); 4881 case GNU_PROPERTY_STACK_SIZE: { 4882 OS << "stack size: "; 4883 if (DataSize == sizeof(typename ELFT::uint)) 4884 OS << formatv("{0:x}", 4885 (uint64_t)(*(const typename ELFT::Addr *)Data.data())); 4886 else 4887 OS << format("<corrupt length: 0x%x>", DataSize); 4888 return OS.str(); 4889 } 4890 case GNU_PROPERTY_NO_COPY_ON_PROTECTED: 4891 OS << "no copy on protected"; 4892 if (DataSize) 4893 OS << format(" <corrupt length: 0x%x>", DataSize); 4894 return OS.str(); 4895 case GNU_PROPERTY_AARCH64_FEATURE_1_AND: 4896 case GNU_PROPERTY_X86_FEATURE_1_AND: 4897 OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: " 4898 : "x86 feature: "); 4899 if (DataSize != 4) { 4900 OS << format("<corrupt length: 0x%x>", DataSize); 4901 return OS.str(); 4902 } 4903 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 4904 if (PrData == 0) { 4905 OS << "<None>"; 4906 return OS.str(); 4907 } 4908 if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) { 4909 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI"); 4910 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC"); 4911 } else { 4912 DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT"); 4913 DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK"); 4914 } 4915 if (PrData) 4916 OS << format("<unknown flags: 0x%x>", PrData); 4917 return OS.str(); 4918 case GNU_PROPERTY_X86_FEATURE_2_NEEDED: 4919 case GNU_PROPERTY_X86_FEATURE_2_USED: 4920 OS << "x86 feature " 4921 << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: "); 4922 if (DataSize != 4) { 4923 OS << format("<corrupt length: 0x%x>", DataSize); 4924 return OS.str(); 4925 } 4926 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 4927 if (PrData == 0) { 4928 OS << "<None>"; 4929 return OS.str(); 4930 } 4931 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86"); 4932 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87"); 4933 DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX"); 4934 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM"); 4935 DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM"); 4936 DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM"); 4937 DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR"); 4938 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE"); 4939 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT"); 4940 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC"); 4941 if (PrData) 4942 OS << format("<unknown flags: 0x%x>", PrData); 4943 return OS.str(); 4944 case GNU_PROPERTY_X86_ISA_1_NEEDED: 4945 case GNU_PROPERTY_X86_ISA_1_USED: 4946 OS << "x86 ISA " 4947 << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: "); 4948 if (DataSize != 4) { 4949 OS << format("<corrupt length: 0x%x>", DataSize); 4950 return OS.str(); 4951 } 4952 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 4953 if (PrData == 0) { 4954 OS << "<None>"; 4955 return OS.str(); 4956 } 4957 DumpBit(GNU_PROPERTY_X86_ISA_1_BASELINE, "x86-64-baseline"); 4958 DumpBit(GNU_PROPERTY_X86_ISA_1_V2, "x86-64-v2"); 4959 DumpBit(GNU_PROPERTY_X86_ISA_1_V3, "x86-64-v3"); 4960 DumpBit(GNU_PROPERTY_X86_ISA_1_V4, "x86-64-v4"); 4961 if (PrData) 4962 OS << format("<unknown flags: 0x%x>", PrData); 4963 return OS.str(); 4964 } 4965 } 4966 4967 template <typename ELFT> 4968 static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) { 4969 using Elf_Word = typename ELFT::Word; 4970 4971 SmallVector<std::string, 4> Properties; 4972 while (Arr.size() >= 8) { 4973 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); 4974 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); 4975 Arr = Arr.drop_front(8); 4976 4977 // Take padding size into account if present. 4978 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); 4979 std::string str; 4980 raw_string_ostream OS(str); 4981 if (Arr.size() < PaddedSize) { 4982 OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize); 4983 Properties.push_back(OS.str()); 4984 break; 4985 } 4986 Properties.push_back( 4987 getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize))); 4988 Arr = Arr.drop_front(PaddedSize); 4989 } 4990 4991 if (!Arr.empty()) 4992 Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>"); 4993 4994 return Properties; 4995 } 4996 4997 struct GNUAbiTag { 4998 std::string OSName; 4999 std::string ABI; 5000 bool IsValid; 5001 }; 5002 5003 template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) { 5004 typedef typename ELFT::Word Elf_Word; 5005 5006 ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()), 5007 reinterpret_cast<const Elf_Word *>(Desc.end())); 5008 5009 if (Words.size() < 4) 5010 return {"", "", /*IsValid=*/false}; 5011 5012 static const char *OSNames[] = { 5013 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 5014 }; 5015 StringRef OSName = "Unknown"; 5016 if (Words[0] < array_lengthof(OSNames)) 5017 OSName = OSNames[Words[0]]; 5018 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 5019 std::string str; 5020 raw_string_ostream ABI(str); 5021 ABI << Major << "." << Minor << "." << Patch; 5022 return {std::string(OSName), ABI.str(), /*IsValid=*/true}; 5023 } 5024 5025 static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) { 5026 std::string str; 5027 raw_string_ostream OS(str); 5028 for (uint8_t B : Desc) 5029 OS << format_hex_no_prefix(B, 2); 5030 return OS.str(); 5031 } 5032 5033 static StringRef getDescAsStringRef(ArrayRef<uint8_t> Desc) { 5034 return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5035 } 5036 5037 template <typename ELFT> 5038 static bool printGNUNote(raw_ostream &OS, uint32_t NoteType, 5039 ArrayRef<uint8_t> Desc) { 5040 // Return true if we were able to pretty-print the note, false otherwise. 5041 switch (NoteType) { 5042 default: 5043 return false; 5044 case ELF::NT_GNU_ABI_TAG: { 5045 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 5046 if (!AbiTag.IsValid) 5047 OS << " <corrupt GNU_ABI_TAG>"; 5048 else 5049 OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI; 5050 break; 5051 } 5052 case ELF::NT_GNU_BUILD_ID: { 5053 OS << " Build ID: " << getGNUBuildId(Desc); 5054 break; 5055 } 5056 case ELF::NT_GNU_GOLD_VERSION: 5057 OS << " Version: " << getDescAsStringRef(Desc); 5058 break; 5059 case ELF::NT_GNU_PROPERTY_TYPE_0: 5060 OS << " Properties:"; 5061 for (const std::string &Property : getGNUPropertyList<ELFT>(Desc)) 5062 OS << " " << Property << "\n"; 5063 break; 5064 } 5065 OS << '\n'; 5066 return true; 5067 } 5068 5069 using AndroidNoteProperties = std::vector<std::pair<StringRef, std::string>>; 5070 static AndroidNoteProperties getAndroidNoteProperties(uint32_t NoteType, 5071 ArrayRef<uint8_t> Desc) { 5072 AndroidNoteProperties Props; 5073 switch (NoteType) { 5074 case ELF::NT_ANDROID_TYPE_MEMTAG: 5075 if (Desc.empty()) { 5076 Props.emplace_back("Invalid .note.android.memtag", ""); 5077 return Props; 5078 } 5079 5080 switch (Desc[0] & NT_MEMTAG_LEVEL_MASK) { 5081 case NT_MEMTAG_LEVEL_NONE: 5082 Props.emplace_back("Tagging Mode", "NONE"); 5083 break; 5084 case NT_MEMTAG_LEVEL_ASYNC: 5085 Props.emplace_back("Tagging Mode", "ASYNC"); 5086 break; 5087 case NT_MEMTAG_LEVEL_SYNC: 5088 Props.emplace_back("Tagging Mode", "SYNC"); 5089 break; 5090 default: 5091 Props.emplace_back( 5092 "Tagging Mode", 5093 ("Unknown (" + Twine::utohexstr(Desc[0] & NT_MEMTAG_LEVEL_MASK) + ")") 5094 .str()); 5095 break; 5096 } 5097 Props.emplace_back("Heap", 5098 (Desc[0] & NT_MEMTAG_HEAP) ? "Enabled" : "Disabled"); 5099 Props.emplace_back("Stack", 5100 (Desc[0] & NT_MEMTAG_STACK) ? "Enabled" : "Disabled"); 5101 break; 5102 default: 5103 return Props; 5104 } 5105 return Props; 5106 } 5107 5108 static bool printAndroidNote(raw_ostream &OS, uint32_t NoteType, 5109 ArrayRef<uint8_t> Desc) { 5110 // Return true if we were able to pretty-print the note, false otherwise. 5111 AndroidNoteProperties Props = getAndroidNoteProperties(NoteType, Desc); 5112 if (Props.empty()) 5113 return false; 5114 for (const auto &KV : Props) 5115 OS << " " << KV.first << ": " << KV.second << '\n'; 5116 OS << '\n'; 5117 return true; 5118 } 5119 5120 template <typename ELFT> 5121 static bool printLLVMOMPOFFLOADNote(raw_ostream &OS, uint32_t NoteType, 5122 ArrayRef<uint8_t> Desc) { 5123 switch (NoteType) { 5124 default: 5125 return false; 5126 case ELF::NT_LLVM_OPENMP_OFFLOAD_VERSION: 5127 OS << " Version: " << getDescAsStringRef(Desc); 5128 break; 5129 case ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER: 5130 OS << " Producer: " << getDescAsStringRef(Desc); 5131 break; 5132 case ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION: 5133 OS << " Producer version: " << getDescAsStringRef(Desc); 5134 break; 5135 } 5136 OS << '\n'; 5137 return true; 5138 } 5139 5140 const EnumEntry<unsigned> FreeBSDFeatureCtlFlags[] = { 5141 {"ASLR_DISABLE", NT_FREEBSD_FCTL_ASLR_DISABLE}, 5142 {"PROTMAX_DISABLE", NT_FREEBSD_FCTL_PROTMAX_DISABLE}, 5143 {"STKGAP_DISABLE", NT_FREEBSD_FCTL_STKGAP_DISABLE}, 5144 {"WXNEEDED", NT_FREEBSD_FCTL_WXNEEDED}, 5145 {"LA48", NT_FREEBSD_FCTL_LA48}, 5146 {"ASG_DISABLE", NT_FREEBSD_FCTL_ASG_DISABLE}, 5147 }; 5148 5149 struct FreeBSDNote { 5150 std::string Type; 5151 std::string Value; 5152 }; 5153 5154 template <typename ELFT> 5155 static Optional<FreeBSDNote> 5156 getFreeBSDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc, bool IsCore) { 5157 if (IsCore) 5158 return None; // No pretty-printing yet. 5159 switch (NoteType) { 5160 case ELF::NT_FREEBSD_ABI_TAG: 5161 if (Desc.size() != 4) 5162 return None; 5163 return FreeBSDNote{ 5164 "ABI tag", 5165 utostr(support::endian::read32<ELFT::TargetEndianness>(Desc.data()))}; 5166 case ELF::NT_FREEBSD_ARCH_TAG: 5167 return FreeBSDNote{"Arch tag", toStringRef(Desc).str()}; 5168 case ELF::NT_FREEBSD_FEATURE_CTL: { 5169 if (Desc.size() != 4) 5170 return None; 5171 unsigned Value = 5172 support::endian::read32<ELFT::TargetEndianness>(Desc.data()); 5173 std::string FlagsStr; 5174 raw_string_ostream OS(FlagsStr); 5175 printFlags(Value, makeArrayRef(FreeBSDFeatureCtlFlags), OS); 5176 if (OS.str().empty()) 5177 OS << "0x" << utohexstr(Value); 5178 else 5179 OS << "(0x" << utohexstr(Value) << ")"; 5180 return FreeBSDNote{"Feature flags", OS.str()}; 5181 } 5182 default: 5183 return None; 5184 } 5185 } 5186 5187 struct AMDNote { 5188 std::string Type; 5189 std::string Value; 5190 }; 5191 5192 template <typename ELFT> 5193 static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5194 switch (NoteType) { 5195 default: 5196 return {"", ""}; 5197 case ELF::NT_AMD_HSA_CODE_OBJECT_VERSION: { 5198 struct CodeObjectVersion { 5199 uint32_t MajorVersion; 5200 uint32_t MinorVersion; 5201 }; 5202 if (Desc.size() != sizeof(CodeObjectVersion)) 5203 return {"AMD HSA Code Object Version", 5204 "Invalid AMD HSA Code Object Version"}; 5205 std::string VersionString; 5206 raw_string_ostream StrOS(VersionString); 5207 auto Version = reinterpret_cast<const CodeObjectVersion *>(Desc.data()); 5208 StrOS << "[Major: " << Version->MajorVersion 5209 << ", Minor: " << Version->MinorVersion << "]"; 5210 return {"AMD HSA Code Object Version", VersionString}; 5211 } 5212 case ELF::NT_AMD_HSA_HSAIL: { 5213 struct HSAILProperties { 5214 uint32_t HSAILMajorVersion; 5215 uint32_t HSAILMinorVersion; 5216 uint8_t Profile; 5217 uint8_t MachineModel; 5218 uint8_t DefaultFloatRound; 5219 }; 5220 if (Desc.size() != sizeof(HSAILProperties)) 5221 return {"AMD HSA HSAIL Properties", "Invalid AMD HSA HSAIL Properties"}; 5222 auto Properties = reinterpret_cast<const HSAILProperties *>(Desc.data()); 5223 std::string HSAILPropetiesString; 5224 raw_string_ostream StrOS(HSAILPropetiesString); 5225 StrOS << "[HSAIL Major: " << Properties->HSAILMajorVersion 5226 << ", HSAIL Minor: " << Properties->HSAILMinorVersion 5227 << ", Profile: " << uint32_t(Properties->Profile) 5228 << ", Machine Model: " << uint32_t(Properties->MachineModel) 5229 << ", Default Float Round: " 5230 << uint32_t(Properties->DefaultFloatRound) << "]"; 5231 return {"AMD HSA HSAIL Properties", HSAILPropetiesString}; 5232 } 5233 case ELF::NT_AMD_HSA_ISA_VERSION: { 5234 struct IsaVersion { 5235 uint16_t VendorNameSize; 5236 uint16_t ArchitectureNameSize; 5237 uint32_t Major; 5238 uint32_t Minor; 5239 uint32_t Stepping; 5240 }; 5241 if (Desc.size() < sizeof(IsaVersion)) 5242 return {"AMD HSA ISA Version", "Invalid AMD HSA ISA Version"}; 5243 auto Isa = reinterpret_cast<const IsaVersion *>(Desc.data()); 5244 if (Desc.size() < sizeof(IsaVersion) + 5245 Isa->VendorNameSize + Isa->ArchitectureNameSize || 5246 Isa->VendorNameSize == 0 || Isa->ArchitectureNameSize == 0) 5247 return {"AMD HSA ISA Version", "Invalid AMD HSA ISA Version"}; 5248 std::string IsaString; 5249 raw_string_ostream StrOS(IsaString); 5250 StrOS << "[Vendor: " 5251 << StringRef((const char*)Desc.data() + sizeof(IsaVersion), Isa->VendorNameSize - 1) 5252 << ", Architecture: " 5253 << StringRef((const char*)Desc.data() + sizeof(IsaVersion) + Isa->VendorNameSize, 5254 Isa->ArchitectureNameSize - 1) 5255 << ", Major: " << Isa->Major << ", Minor: " << Isa->Minor 5256 << ", Stepping: " << Isa->Stepping << "]"; 5257 return {"AMD HSA ISA Version", IsaString}; 5258 } 5259 case ELF::NT_AMD_HSA_METADATA: { 5260 if (Desc.size() == 0) 5261 return {"AMD HSA Metadata", ""}; 5262 return { 5263 "AMD HSA Metadata", 5264 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size() - 1)}; 5265 } 5266 case ELF::NT_AMD_HSA_ISA_NAME: { 5267 if (Desc.size() == 0) 5268 return {"AMD HSA ISA Name", ""}; 5269 return { 5270 "AMD HSA ISA Name", 5271 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; 5272 } 5273 case ELF::NT_AMD_PAL_METADATA: { 5274 struct PALMetadata { 5275 uint32_t Key; 5276 uint32_t Value; 5277 }; 5278 if (Desc.size() % sizeof(PALMetadata) != 0) 5279 return {"AMD PAL Metadata", "Invalid AMD PAL Metadata"}; 5280 auto Isa = reinterpret_cast<const PALMetadata *>(Desc.data()); 5281 std::string MetadataString; 5282 raw_string_ostream StrOS(MetadataString); 5283 for (size_t I = 0, E = Desc.size() / sizeof(PALMetadata); I < E; ++I) { 5284 StrOS << "[" << Isa[I].Key << ": " << Isa[I].Value << "]"; 5285 } 5286 return {"AMD PAL Metadata", MetadataString}; 5287 } 5288 } 5289 } 5290 5291 struct AMDGPUNote { 5292 std::string Type; 5293 std::string Value; 5294 }; 5295 5296 template <typename ELFT> 5297 static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5298 switch (NoteType) { 5299 default: 5300 return {"", ""}; 5301 case ELF::NT_AMDGPU_METADATA: { 5302 StringRef MsgPackString = 5303 StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5304 msgpack::Document MsgPackDoc; 5305 if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false)) 5306 return {"", ""}; 5307 5308 AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true); 5309 std::string MetadataString; 5310 if (!Verifier.verify(MsgPackDoc.getRoot())) 5311 MetadataString = "Invalid AMDGPU Metadata\n"; 5312 5313 raw_string_ostream StrOS(MetadataString); 5314 if (MsgPackDoc.getRoot().isScalar()) { 5315 // TODO: passing a scalar root to toYAML() asserts: 5316 // (PolymorphicTraits<T>::getKind(Val) != NodeKind::Scalar && 5317 // "plain scalar documents are not supported") 5318 // To avoid this crash we print the raw data instead. 5319 return {"", ""}; 5320 } 5321 MsgPackDoc.toYAML(StrOS); 5322 return {"AMDGPU Metadata", StrOS.str()}; 5323 } 5324 } 5325 } 5326 5327 struct CoreFileMapping { 5328 uint64_t Start, End, Offset; 5329 StringRef Filename; 5330 }; 5331 5332 struct CoreNote { 5333 uint64_t PageSize; 5334 std::vector<CoreFileMapping> Mappings; 5335 }; 5336 5337 static Expected<CoreNote> readCoreNote(DataExtractor Desc) { 5338 // Expected format of the NT_FILE note description: 5339 // 1. # of file mappings (call it N) 5340 // 2. Page size 5341 // 3. N (start, end, offset) triples 5342 // 4. N packed filenames (null delimited) 5343 // Each field is an Elf_Addr, except for filenames which are char* strings. 5344 5345 CoreNote Ret; 5346 const int Bytes = Desc.getAddressSize(); 5347 5348 if (!Desc.isValidOffsetForAddress(2)) 5349 return createError("the note of size 0x" + Twine::utohexstr(Desc.size()) + 5350 " is too short, expected at least 0x" + 5351 Twine::utohexstr(Bytes * 2)); 5352 if (Desc.getData().back() != 0) 5353 return createError("the note is not NUL terminated"); 5354 5355 uint64_t DescOffset = 0; 5356 uint64_t FileCount = Desc.getAddress(&DescOffset); 5357 Ret.PageSize = Desc.getAddress(&DescOffset); 5358 5359 if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes)) 5360 return createError("unable to read file mappings (found " + 5361 Twine(FileCount) + "): the note of size 0x" + 5362 Twine::utohexstr(Desc.size()) + " is too short"); 5363 5364 uint64_t FilenamesOffset = 0; 5365 DataExtractor Filenames( 5366 Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes), 5367 Desc.isLittleEndian(), Desc.getAddressSize()); 5368 5369 Ret.Mappings.resize(FileCount); 5370 size_t I = 0; 5371 for (CoreFileMapping &Mapping : Ret.Mappings) { 5372 ++I; 5373 if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1)) 5374 return createError( 5375 "unable to read the file name for the mapping with index " + 5376 Twine(I) + ": the note of size 0x" + Twine::utohexstr(Desc.size()) + 5377 " is truncated"); 5378 Mapping.Start = Desc.getAddress(&DescOffset); 5379 Mapping.End = Desc.getAddress(&DescOffset); 5380 Mapping.Offset = Desc.getAddress(&DescOffset); 5381 Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset); 5382 } 5383 5384 return Ret; 5385 } 5386 5387 template <typename ELFT> 5388 static void printCoreNote(raw_ostream &OS, const CoreNote &Note) { 5389 // Length of "0x<address>" string. 5390 const int FieldWidth = ELFT::Is64Bits ? 18 : 10; 5391 5392 OS << " Page size: " << format_decimal(Note.PageSize, 0) << '\n'; 5393 OS << " " << right_justify("Start", FieldWidth) << " " 5394 << right_justify("End", FieldWidth) << " " 5395 << right_justify("Page Offset", FieldWidth) << '\n'; 5396 for (const CoreFileMapping &Mapping : Note.Mappings) { 5397 OS << " " << format_hex(Mapping.Start, FieldWidth) << " " 5398 << format_hex(Mapping.End, FieldWidth) << " " 5399 << format_hex(Mapping.Offset, FieldWidth) << "\n " 5400 << Mapping.Filename << '\n'; 5401 } 5402 } 5403 5404 const NoteType GenericNoteTypes[] = { 5405 {ELF::NT_VERSION, "NT_VERSION (version)"}, 5406 {ELF::NT_ARCH, "NT_ARCH (architecture)"}, 5407 {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"}, 5408 {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"}, 5409 }; 5410 5411 const NoteType GNUNoteTypes[] = { 5412 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 5413 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 5414 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 5415 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 5416 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, 5417 }; 5418 5419 const NoteType FreeBSDCoreNoteTypes[] = { 5420 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 5421 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 5422 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 5423 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 5424 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 5425 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 5426 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 5427 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 5428 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 5429 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 5430 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 5431 }; 5432 5433 const NoteType FreeBSDNoteTypes[] = { 5434 {ELF::NT_FREEBSD_ABI_TAG, "NT_FREEBSD_ABI_TAG (ABI version tag)"}, 5435 {ELF::NT_FREEBSD_NOINIT_TAG, "NT_FREEBSD_NOINIT_TAG (no .init tag)"}, 5436 {ELF::NT_FREEBSD_ARCH_TAG, "NT_FREEBSD_ARCH_TAG (architecture tag)"}, 5437 {ELF::NT_FREEBSD_FEATURE_CTL, 5438 "NT_FREEBSD_FEATURE_CTL (FreeBSD feature control)"}, 5439 }; 5440 5441 const NoteType NetBSDCoreNoteTypes[] = { 5442 {ELF::NT_NETBSDCORE_PROCINFO, 5443 "NT_NETBSDCORE_PROCINFO (procinfo structure)"}, 5444 {ELF::NT_NETBSDCORE_AUXV, "NT_NETBSDCORE_AUXV (ELF auxiliary vector data)"}, 5445 {ELF::NT_NETBSDCORE_LWPSTATUS, "PT_LWPSTATUS (ptrace_lwpstatus structure)"}, 5446 }; 5447 5448 const NoteType OpenBSDCoreNoteTypes[] = { 5449 {ELF::NT_OPENBSD_PROCINFO, "NT_OPENBSD_PROCINFO (procinfo structure)"}, 5450 {ELF::NT_OPENBSD_AUXV, "NT_OPENBSD_AUXV (ELF auxiliary vector data)"}, 5451 {ELF::NT_OPENBSD_REGS, "NT_OPENBSD_REGS (regular registers)"}, 5452 {ELF::NT_OPENBSD_FPREGS, "NT_OPENBSD_FPREGS (floating point registers)"}, 5453 {ELF::NT_OPENBSD_WCOOKIE, "NT_OPENBSD_WCOOKIE (window cookie)"}, 5454 }; 5455 5456 const NoteType AMDNoteTypes[] = { 5457 {ELF::NT_AMD_HSA_CODE_OBJECT_VERSION, 5458 "NT_AMD_HSA_CODE_OBJECT_VERSION (AMD HSA Code Object Version)"}, 5459 {ELF::NT_AMD_HSA_HSAIL, "NT_AMD_HSA_HSAIL (AMD HSA HSAIL Properties)"}, 5460 {ELF::NT_AMD_HSA_ISA_VERSION, "NT_AMD_HSA_ISA_VERSION (AMD HSA ISA Version)"}, 5461 {ELF::NT_AMD_HSA_METADATA, "NT_AMD_HSA_METADATA (AMD HSA Metadata)"}, 5462 {ELF::NT_AMD_HSA_ISA_NAME, "NT_AMD_HSA_ISA_NAME (AMD HSA ISA Name)"}, 5463 {ELF::NT_AMD_PAL_METADATA, "NT_AMD_PAL_METADATA (AMD PAL Metadata)"}, 5464 }; 5465 5466 const NoteType AMDGPUNoteTypes[] = { 5467 {ELF::NT_AMDGPU_METADATA, "NT_AMDGPU_METADATA (AMDGPU Metadata)"}, 5468 }; 5469 5470 const NoteType LLVMOMPOFFLOADNoteTypes[] = { 5471 {ELF::NT_LLVM_OPENMP_OFFLOAD_VERSION, 5472 "NT_LLVM_OPENMP_OFFLOAD_VERSION (image format version)"}, 5473 {ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER, 5474 "NT_LLVM_OPENMP_OFFLOAD_PRODUCER (producing toolchain)"}, 5475 {ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION, 5476 "NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION (producing toolchain version)"}, 5477 }; 5478 5479 const NoteType AndroidNoteTypes[] = { 5480 {ELF::NT_ANDROID_TYPE_IDENT, "NT_ANDROID_TYPE_IDENT"}, 5481 {ELF::NT_ANDROID_TYPE_KUSER, "NT_ANDROID_TYPE_KUSER"}, 5482 {ELF::NT_ANDROID_TYPE_MEMTAG, 5483 "NT_ANDROID_TYPE_MEMTAG (Android memory tagging information)"}, 5484 }; 5485 5486 const NoteType CoreNoteTypes[] = { 5487 {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"}, 5488 {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"}, 5489 {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"}, 5490 {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"}, 5491 {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"}, 5492 {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"}, 5493 {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"}, 5494 {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"}, 5495 {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"}, 5496 {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"}, 5497 {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"}, 5498 5499 {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"}, 5500 {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"}, 5501 {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"}, 5502 {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"}, 5503 {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"}, 5504 {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"}, 5505 {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"}, 5506 {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"}, 5507 {ELF::NT_PPC_TM_CFPR, 5508 "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"}, 5509 {ELF::NT_PPC_TM_CVMX, 5510 "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"}, 5511 {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"}, 5512 {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"}, 5513 {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"}, 5514 {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"}, 5515 {ELF::NT_PPC_TM_CDSCR, "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"}, 5516 5517 {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"}, 5518 {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"}, 5519 {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"}, 5520 5521 {ELF::NT_S390_HIGH_GPRS, "NT_S390_HIGH_GPRS (s390 upper register halves)"}, 5522 {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"}, 5523 {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"}, 5524 {ELF::NT_S390_TODPREG, "NT_S390_TODPREG (s390 TOD programmable register)"}, 5525 {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"}, 5526 {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"}, 5527 {ELF::NT_S390_LAST_BREAK, 5528 "NT_S390_LAST_BREAK (s390 last breaking event address)"}, 5529 {ELF::NT_S390_SYSTEM_CALL, 5530 "NT_S390_SYSTEM_CALL (s390 system call restart data)"}, 5531 {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"}, 5532 {ELF::NT_S390_VXRS_LOW, 5533 "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"}, 5534 {ELF::NT_S390_VXRS_HIGH, "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"}, 5535 {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"}, 5536 {ELF::NT_S390_GS_BC, 5537 "NT_S390_GS_BC (s390 guarded-storage broadcast control)"}, 5538 5539 {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"}, 5540 {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"}, 5541 {ELF::NT_ARM_HW_BREAK, 5542 "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"}, 5543 {ELF::NT_ARM_HW_WATCH, 5544 "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"}, 5545 5546 {ELF::NT_FILE, "NT_FILE (mapped files)"}, 5547 {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"}, 5548 {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"}, 5549 }; 5550 5551 template <class ELFT> 5552 StringRef getNoteTypeName(const typename ELFT::Note &Note, unsigned ELFType) { 5553 uint32_t Type = Note.getType(); 5554 auto FindNote = [&](ArrayRef<NoteType> V) -> StringRef { 5555 for (const NoteType &N : V) 5556 if (N.ID == Type) 5557 return N.Name; 5558 return ""; 5559 }; 5560 5561 StringRef Name = Note.getName(); 5562 if (Name == "GNU") 5563 return FindNote(GNUNoteTypes); 5564 if (Name == "FreeBSD") { 5565 if (ELFType == ELF::ET_CORE) { 5566 // FreeBSD also places the generic core notes in the FreeBSD namespace. 5567 StringRef Result = FindNote(FreeBSDCoreNoteTypes); 5568 if (!Result.empty()) 5569 return Result; 5570 return FindNote(CoreNoteTypes); 5571 } else { 5572 return FindNote(FreeBSDNoteTypes); 5573 } 5574 } 5575 if (ELFType == ELF::ET_CORE && Name.startswith("NetBSD-CORE")) { 5576 StringRef Result = FindNote(NetBSDCoreNoteTypes); 5577 if (!Result.empty()) 5578 return Result; 5579 return FindNote(CoreNoteTypes); 5580 } 5581 if (ELFType == ELF::ET_CORE && Name.startswith("OpenBSD")) { 5582 // OpenBSD also places the generic core notes in the OpenBSD namespace. 5583 StringRef Result = FindNote(OpenBSDCoreNoteTypes); 5584 if (!Result.empty()) 5585 return Result; 5586 return FindNote(CoreNoteTypes); 5587 } 5588 if (Name == "AMD") 5589 return FindNote(AMDNoteTypes); 5590 if (Name == "AMDGPU") 5591 return FindNote(AMDGPUNoteTypes); 5592 if (Name == "LLVMOMPOFFLOAD") 5593 return FindNote(LLVMOMPOFFLOADNoteTypes); 5594 if (Name == "Android") 5595 return FindNote(AndroidNoteTypes); 5596 5597 if (ELFType == ELF::ET_CORE) 5598 return FindNote(CoreNoteTypes); 5599 return FindNote(GenericNoteTypes); 5600 } 5601 5602 template <class ELFT> 5603 static void printNotesHelper( 5604 const ELFDumper<ELFT> &Dumper, 5605 llvm::function_ref<void(Optional<StringRef>, typename ELFT::Off, 5606 typename ELFT::Addr)> 5607 StartNotesFn, 5608 llvm::function_ref<Error(const typename ELFT::Note &, bool)> ProcessNoteFn, 5609 llvm::function_ref<void()> FinishNotesFn) { 5610 const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile(); 5611 bool IsCoreFile = Obj.getHeader().e_type == ELF::ET_CORE; 5612 5613 ArrayRef<typename ELFT::Shdr> Sections = cantFail(Obj.sections()); 5614 if (!IsCoreFile && !Sections.empty()) { 5615 for (const typename ELFT::Shdr &S : Sections) { 5616 if (S.sh_type != SHT_NOTE) 5617 continue; 5618 StartNotesFn(expectedToOptional(Obj.getSectionName(S)), S.sh_offset, 5619 S.sh_size); 5620 Error Err = Error::success(); 5621 size_t I = 0; 5622 for (const typename ELFT::Note Note : Obj.notes(S, Err)) { 5623 if (Error E = ProcessNoteFn(Note, IsCoreFile)) 5624 Dumper.reportUniqueWarning( 5625 "unable to read note with index " + Twine(I) + " from the " + 5626 describe(Obj, S) + ": " + toString(std::move(E))); 5627 ++I; 5628 } 5629 if (Err) 5630 Dumper.reportUniqueWarning("unable to read notes from the " + 5631 describe(Obj, S) + ": " + 5632 toString(std::move(Err))); 5633 FinishNotesFn(); 5634 } 5635 return; 5636 } 5637 5638 Expected<ArrayRef<typename ELFT::Phdr>> PhdrsOrErr = Obj.program_headers(); 5639 if (!PhdrsOrErr) { 5640 Dumper.reportUniqueWarning( 5641 "unable to read program headers to locate the PT_NOTE segment: " + 5642 toString(PhdrsOrErr.takeError())); 5643 return; 5644 } 5645 5646 for (size_t I = 0, E = (*PhdrsOrErr).size(); I != E; ++I) { 5647 const typename ELFT::Phdr &P = (*PhdrsOrErr)[I]; 5648 if (P.p_type != PT_NOTE) 5649 continue; 5650 StartNotesFn(/*SecName=*/None, P.p_offset, P.p_filesz); 5651 Error Err = Error::success(); 5652 size_t Index = 0; 5653 for (const typename ELFT::Note Note : Obj.notes(P, Err)) { 5654 if (Error E = ProcessNoteFn(Note, IsCoreFile)) 5655 Dumper.reportUniqueWarning("unable to read note with index " + 5656 Twine(Index) + 5657 " from the PT_NOTE segment with index " + 5658 Twine(I) + ": " + toString(std::move(E))); 5659 ++Index; 5660 } 5661 if (Err) 5662 Dumper.reportUniqueWarning( 5663 "unable to read notes from the PT_NOTE segment with index " + 5664 Twine(I) + ": " + toString(std::move(Err))); 5665 FinishNotesFn(); 5666 } 5667 } 5668 5669 template <class ELFT> void GNUELFDumper<ELFT>::printNotes() { 5670 bool IsFirstHeader = true; 5671 auto PrintHeader = [&](Optional<StringRef> SecName, 5672 const typename ELFT::Off Offset, 5673 const typename ELFT::Addr Size) { 5674 // Print a newline between notes sections to match GNU readelf. 5675 if (!IsFirstHeader) { 5676 OS << '\n'; 5677 } else { 5678 IsFirstHeader = false; 5679 } 5680 5681 OS << "Displaying notes found "; 5682 5683 if (SecName) 5684 OS << "in: " << *SecName << "\n"; 5685 else 5686 OS << "at file offset " << format_hex(Offset, 10) << " with length " 5687 << format_hex(Size, 10) << ":\n"; 5688 5689 OS << " Owner Data size \tDescription\n"; 5690 }; 5691 5692 auto ProcessNote = [&](const Elf_Note &Note, bool IsCore) -> Error { 5693 StringRef Name = Note.getName(); 5694 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 5695 Elf_Word Type = Note.getType(); 5696 5697 // Print the note owner/type. 5698 OS << " " << left_justify(Name, 20) << ' ' 5699 << format_hex(Descriptor.size(), 10) << '\t'; 5700 5701 StringRef NoteType = 5702 getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type); 5703 if (!NoteType.empty()) 5704 OS << NoteType << '\n'; 5705 else 5706 OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n"; 5707 5708 // Print the description, or fallback to printing raw bytes for unknown 5709 // owners/if we fail to pretty-print the contents. 5710 if (Name == "GNU") { 5711 if (printGNUNote<ELFT>(OS, Type, Descriptor)) 5712 return Error::success(); 5713 } else if (Name == "FreeBSD") { 5714 if (Optional<FreeBSDNote> N = 5715 getFreeBSDNote<ELFT>(Type, Descriptor, IsCore)) { 5716 OS << " " << N->Type << ": " << N->Value << '\n'; 5717 return Error::success(); 5718 } 5719 } else if (Name == "AMD") { 5720 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 5721 if (!N.Type.empty()) { 5722 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5723 return Error::success(); 5724 } 5725 } else if (Name == "AMDGPU") { 5726 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 5727 if (!N.Type.empty()) { 5728 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5729 return Error::success(); 5730 } 5731 } else if (Name == "LLVMOMPOFFLOAD") { 5732 if (printLLVMOMPOFFLOADNote<ELFT>(OS, Type, Descriptor)) 5733 return Error::success(); 5734 } else if (Name == "CORE") { 5735 if (Type == ELF::NT_FILE) { 5736 DataExtractor DescExtractor(Descriptor, 5737 ELFT::TargetEndianness == support::little, 5738 sizeof(Elf_Addr)); 5739 if (Expected<CoreNote> NoteOrErr = readCoreNote(DescExtractor)) { 5740 printCoreNote<ELFT>(OS, *NoteOrErr); 5741 return Error::success(); 5742 } else { 5743 return NoteOrErr.takeError(); 5744 } 5745 } 5746 } else if (Name == "Android") { 5747 if (printAndroidNote(OS, Type, Descriptor)) 5748 return Error::success(); 5749 } 5750 if (!Descriptor.empty()) { 5751 OS << " description data:"; 5752 for (uint8_t B : Descriptor) 5753 OS << " " << format("%02x", B); 5754 OS << '\n'; 5755 } 5756 return Error::success(); 5757 }; 5758 5759 printNotesHelper(*this, PrintHeader, ProcessNote, []() {}); 5760 } 5761 5762 template <class ELFT> void GNUELFDumper<ELFT>::printELFLinkerOptions() { 5763 OS << "printELFLinkerOptions not implemented!\n"; 5764 } 5765 5766 template <class ELFT> 5767 void ELFDumper<ELFT>::printDependentLibsHelper( 5768 function_ref<void(const Elf_Shdr &)> OnSectionStart, 5769 function_ref<void(StringRef, uint64_t)> OnLibEntry) { 5770 auto Warn = [this](unsigned SecNdx, StringRef Msg) { 5771 this->reportUniqueWarning("SHT_LLVM_DEPENDENT_LIBRARIES section at index " + 5772 Twine(SecNdx) + " is broken: " + Msg); 5773 }; 5774 5775 unsigned I = -1; 5776 for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) { 5777 ++I; 5778 if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES) 5779 continue; 5780 5781 OnSectionStart(Shdr); 5782 5783 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Shdr); 5784 if (!ContentsOrErr) { 5785 Warn(I, toString(ContentsOrErr.takeError())); 5786 continue; 5787 } 5788 5789 ArrayRef<uint8_t> Contents = *ContentsOrErr; 5790 if (!Contents.empty() && Contents.back() != 0) { 5791 Warn(I, "the content is not null-terminated"); 5792 continue; 5793 } 5794 5795 for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) { 5796 StringRef Lib((const char *)I); 5797 OnLibEntry(Lib, I - Contents.begin()); 5798 I += Lib.size() + 1; 5799 } 5800 } 5801 } 5802 5803 template <class ELFT> 5804 void ELFDumper<ELFT>::forEachRelocationDo( 5805 const Elf_Shdr &Sec, bool RawRelr, 5806 llvm::function_ref<void(const Relocation<ELFT> &, unsigned, 5807 const Elf_Shdr &, const Elf_Shdr *)> 5808 RelRelaFn, 5809 llvm::function_ref<void(const Elf_Relr &)> RelrFn) { 5810 auto Warn = [&](Error &&E, 5811 const Twine &Prefix = "unable to read relocations from") { 5812 this->reportUniqueWarning(Prefix + " " + describe(Sec) + ": " + 5813 toString(std::move(E))); 5814 }; 5815 5816 // SHT_RELR/SHT_ANDROID_RELR sections do not have an associated symbol table. 5817 // For them we should not treat the value of the sh_link field as an index of 5818 // a symbol table. 5819 const Elf_Shdr *SymTab; 5820 if (Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_RELR) { 5821 Expected<const Elf_Shdr *> SymTabOrErr = Obj.getSection(Sec.sh_link); 5822 if (!SymTabOrErr) { 5823 Warn(SymTabOrErr.takeError(), "unable to locate a symbol table for"); 5824 return; 5825 } 5826 SymTab = *SymTabOrErr; 5827 } 5828 5829 unsigned RelNdx = 0; 5830 const bool IsMips64EL = this->Obj.isMips64EL(); 5831 switch (Sec.sh_type) { 5832 case ELF::SHT_REL: 5833 if (Expected<Elf_Rel_Range> RangeOrErr = Obj.rels(Sec)) { 5834 for (const Elf_Rel &R : *RangeOrErr) 5835 RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab); 5836 } else { 5837 Warn(RangeOrErr.takeError()); 5838 } 5839 break; 5840 case ELF::SHT_RELA: 5841 if (Expected<Elf_Rela_Range> RangeOrErr = Obj.relas(Sec)) { 5842 for (const Elf_Rela &R : *RangeOrErr) 5843 RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab); 5844 } else { 5845 Warn(RangeOrErr.takeError()); 5846 } 5847 break; 5848 case ELF::SHT_RELR: 5849 case ELF::SHT_ANDROID_RELR: { 5850 Expected<Elf_Relr_Range> RangeOrErr = Obj.relrs(Sec); 5851 if (!RangeOrErr) { 5852 Warn(RangeOrErr.takeError()); 5853 break; 5854 } 5855 if (RawRelr) { 5856 for (const Elf_Relr &R : *RangeOrErr) 5857 RelrFn(R); 5858 break; 5859 } 5860 5861 for (const Elf_Rel &R : Obj.decode_relrs(*RangeOrErr)) 5862 RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, 5863 /*SymTab=*/nullptr); 5864 break; 5865 } 5866 case ELF::SHT_ANDROID_REL: 5867 case ELF::SHT_ANDROID_RELA: 5868 if (Expected<std::vector<Elf_Rela>> RelasOrErr = Obj.android_relas(Sec)) { 5869 for (const Elf_Rela &R : *RelasOrErr) 5870 RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab); 5871 } else { 5872 Warn(RelasOrErr.takeError()); 5873 } 5874 break; 5875 } 5876 } 5877 5878 template <class ELFT> 5879 StringRef ELFDumper<ELFT>::getPrintableSectionName(const Elf_Shdr &Sec) const { 5880 StringRef Name = "<?>"; 5881 if (Expected<StringRef> SecNameOrErr = 5882 Obj.getSectionName(Sec, this->WarningHandler)) 5883 Name = *SecNameOrErr; 5884 else 5885 this->reportUniqueWarning("unable to get the name of " + describe(Sec) + 5886 ": " + toString(SecNameOrErr.takeError())); 5887 return Name; 5888 } 5889 5890 template <class ELFT> void GNUELFDumper<ELFT>::printDependentLibs() { 5891 bool SectionStarted = false; 5892 struct NameOffset { 5893 StringRef Name; 5894 uint64_t Offset; 5895 }; 5896 std::vector<NameOffset> SecEntries; 5897 NameOffset Current; 5898 auto PrintSection = [&]() { 5899 OS << "Dependent libraries section " << Current.Name << " at offset " 5900 << format_hex(Current.Offset, 1) << " contains " << SecEntries.size() 5901 << " entries:\n"; 5902 for (NameOffset Entry : SecEntries) 5903 OS << " [" << format("%6" PRIx64, Entry.Offset) << "] " << Entry.Name 5904 << "\n"; 5905 OS << "\n"; 5906 SecEntries.clear(); 5907 }; 5908 5909 auto OnSectionStart = [&](const Elf_Shdr &Shdr) { 5910 if (SectionStarted) 5911 PrintSection(); 5912 SectionStarted = true; 5913 Current.Offset = Shdr.sh_offset; 5914 Current.Name = this->getPrintableSectionName(Shdr); 5915 }; 5916 auto OnLibEntry = [&](StringRef Lib, uint64_t Offset) { 5917 SecEntries.push_back(NameOffset{Lib, Offset}); 5918 }; 5919 5920 this->printDependentLibsHelper(OnSectionStart, OnLibEntry); 5921 if (SectionStarted) 5922 PrintSection(); 5923 } 5924 5925 template <class ELFT> 5926 SmallVector<uint32_t> ELFDumper<ELFT>::getSymbolIndexesForFunctionAddress( 5927 uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec) { 5928 SmallVector<uint32_t> SymbolIndexes; 5929 if (!this->AddressToIndexMap.hasValue()) { 5930 // Populate the address to index map upon the first invocation of this 5931 // function. 5932 this->AddressToIndexMap.emplace(); 5933 if (this->DotSymtabSec) { 5934 if (Expected<Elf_Sym_Range> SymsOrError = 5935 Obj.symbols(this->DotSymtabSec)) { 5936 uint32_t Index = (uint32_t)-1; 5937 for (const Elf_Sym &Sym : *SymsOrError) { 5938 ++Index; 5939 5940 if (Sym.st_shndx == ELF::SHN_UNDEF || Sym.getType() != ELF::STT_FUNC) 5941 continue; 5942 5943 Expected<uint64_t> SymAddrOrErr = 5944 ObjF.toSymbolRef(this->DotSymtabSec, Index).getAddress(); 5945 if (!SymAddrOrErr) { 5946 std::string Name = this->getStaticSymbolName(Index); 5947 reportUniqueWarning("unable to get address of symbol '" + Name + 5948 "': " + toString(SymAddrOrErr.takeError())); 5949 return SymbolIndexes; 5950 } 5951 5952 (*this->AddressToIndexMap)[*SymAddrOrErr].push_back(Index); 5953 } 5954 } else { 5955 reportUniqueWarning("unable to read the symbol table: " + 5956 toString(SymsOrError.takeError())); 5957 } 5958 } 5959 } 5960 5961 auto Symbols = this->AddressToIndexMap->find(SymValue); 5962 if (Symbols == this->AddressToIndexMap->end()) 5963 return SymbolIndexes; 5964 5965 for (uint32_t Index : Symbols->second) { 5966 // Check if the symbol is in the right section. FunctionSec == None 5967 // means "any section". 5968 if (FunctionSec) { 5969 const Elf_Sym &Sym = *cantFail(Obj.getSymbol(this->DotSymtabSec, Index)); 5970 if (Expected<const Elf_Shdr *> SecOrErr = 5971 Obj.getSection(Sym, this->DotSymtabSec, 5972 this->getShndxTable(this->DotSymtabSec))) { 5973 if (*FunctionSec != *SecOrErr) 5974 continue; 5975 } else { 5976 std::string Name = this->getStaticSymbolName(Index); 5977 // Note: it is impossible to trigger this error currently, it is 5978 // untested. 5979 reportUniqueWarning("unable to get section of symbol '" + Name + 5980 "': " + toString(SecOrErr.takeError())); 5981 return SymbolIndexes; 5982 } 5983 } 5984 5985 SymbolIndexes.push_back(Index); 5986 } 5987 5988 return SymbolIndexes; 5989 } 5990 5991 template <class ELFT> 5992 bool ELFDumper<ELFT>::printFunctionStackSize( 5993 uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec, 5994 const Elf_Shdr &StackSizeSec, DataExtractor Data, uint64_t *Offset) { 5995 SmallVector<uint32_t> FuncSymIndexes = 5996 this->getSymbolIndexesForFunctionAddress(SymValue, FunctionSec); 5997 if (FuncSymIndexes.empty()) 5998 reportUniqueWarning( 5999 "could not identify function symbol for stack size entry in " + 6000 describe(StackSizeSec)); 6001 6002 // Extract the size. The expectation is that Offset is pointing to the right 6003 // place, i.e. past the function address. 6004 Error Err = Error::success(); 6005 uint64_t StackSize = Data.getULEB128(Offset, &Err); 6006 if (Err) { 6007 reportUniqueWarning("could not extract a valid stack size from " + 6008 describe(StackSizeSec) + ": " + 6009 toString(std::move(Err))); 6010 return false; 6011 } 6012 6013 if (FuncSymIndexes.empty()) { 6014 printStackSizeEntry(StackSize, {"?"}); 6015 } else { 6016 SmallVector<std::string> FuncSymNames; 6017 for (uint32_t Index : FuncSymIndexes) 6018 FuncSymNames.push_back(this->getStaticSymbolName(Index)); 6019 printStackSizeEntry(StackSize, FuncSymNames); 6020 } 6021 6022 return true; 6023 } 6024 6025 template <class ELFT> 6026 void GNUELFDumper<ELFT>::printStackSizeEntry(uint64_t Size, 6027 ArrayRef<std::string> FuncNames) { 6028 OS.PadToColumn(2); 6029 OS << format_decimal(Size, 11); 6030 OS.PadToColumn(18); 6031 6032 OS << join(FuncNames.begin(), FuncNames.end(), ", ") << "\n"; 6033 } 6034 6035 template <class ELFT> 6036 void ELFDumper<ELFT>::printStackSize(const Relocation<ELFT> &R, 6037 const Elf_Shdr &RelocSec, unsigned Ndx, 6038 const Elf_Shdr *SymTab, 6039 const Elf_Shdr *FunctionSec, 6040 const Elf_Shdr &StackSizeSec, 6041 const RelocationResolver &Resolver, 6042 DataExtractor Data) { 6043 // This function ignores potentially erroneous input, unless it is directly 6044 // related to stack size reporting. 6045 const Elf_Sym *Sym = nullptr; 6046 Expected<RelSymbol<ELFT>> TargetOrErr = this->getRelocationTarget(R, SymTab); 6047 if (!TargetOrErr) 6048 reportUniqueWarning("unable to get the target of relocation with index " + 6049 Twine(Ndx) + " in " + describe(RelocSec) + ": " + 6050 toString(TargetOrErr.takeError())); 6051 else 6052 Sym = TargetOrErr->Sym; 6053 6054 uint64_t RelocSymValue = 0; 6055 if (Sym) { 6056 Expected<const Elf_Shdr *> SectionOrErr = 6057 this->Obj.getSection(*Sym, SymTab, this->getShndxTable(SymTab)); 6058 if (!SectionOrErr) { 6059 reportUniqueWarning( 6060 "cannot identify the section for relocation symbol '" + 6061 (*TargetOrErr).Name + "': " + toString(SectionOrErr.takeError())); 6062 } else if (*SectionOrErr != FunctionSec) { 6063 reportUniqueWarning("relocation symbol '" + (*TargetOrErr).Name + 6064 "' is not in the expected section"); 6065 // Pretend that the symbol is in the correct section and report its 6066 // stack size anyway. 6067 FunctionSec = *SectionOrErr; 6068 } 6069 6070 RelocSymValue = Sym->st_value; 6071 } 6072 6073 uint64_t Offset = R.Offset; 6074 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { 6075 reportUniqueWarning("found invalid relocation offset (0x" + 6076 Twine::utohexstr(Offset) + ") into " + 6077 describe(StackSizeSec) + 6078 " while trying to extract a stack size entry"); 6079 return; 6080 } 6081 6082 uint64_t SymValue = 6083 Resolver(R.Type, Offset, RelocSymValue, Data.getAddress(&Offset), 6084 R.Addend.getValueOr(0)); 6085 this->printFunctionStackSize(SymValue, FunctionSec, StackSizeSec, Data, 6086 &Offset); 6087 } 6088 6089 template <class ELFT> 6090 void ELFDumper<ELFT>::printNonRelocatableStackSizes( 6091 std::function<void()> PrintHeader) { 6092 // This function ignores potentially erroneous input, unless it is directly 6093 // related to stack size reporting. 6094 for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { 6095 if (this->getPrintableSectionName(Sec) != ".stack_sizes") 6096 continue; 6097 PrintHeader(); 6098 ArrayRef<uint8_t> Contents = 6099 unwrapOrError(this->FileName, Obj.getSectionContents(Sec)); 6100 DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr)); 6101 uint64_t Offset = 0; 6102 while (Offset < Contents.size()) { 6103 // The function address is followed by a ULEB representing the stack 6104 // size. Check for an extra byte before we try to process the entry. 6105 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { 6106 reportUniqueWarning( 6107 describe(Sec) + 6108 " ended while trying to extract a stack size entry"); 6109 break; 6110 } 6111 uint64_t SymValue = Data.getAddress(&Offset); 6112 if (!printFunctionStackSize(SymValue, /*FunctionSec=*/None, Sec, Data, 6113 &Offset)) 6114 break; 6115 } 6116 } 6117 } 6118 6119 template <class ELFT> 6120 void ELFDumper<ELFT>::getSectionAndRelocations( 6121 std::function<bool(const Elf_Shdr &)> IsMatch, 6122 llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> &SecToRelocMap) { 6123 for (const Elf_Shdr &Sec : cantFail(Obj.sections())) { 6124 if (IsMatch(Sec)) 6125 if (SecToRelocMap.insert(std::make_pair(&Sec, (const Elf_Shdr *)nullptr)) 6126 .second) 6127 continue; 6128 6129 if (Sec.sh_type != ELF::SHT_RELA && Sec.sh_type != ELF::SHT_REL) 6130 continue; 6131 6132 Expected<const Elf_Shdr *> RelSecOrErr = Obj.getSection(Sec.sh_info); 6133 if (!RelSecOrErr) { 6134 reportUniqueWarning(describe(Sec) + 6135 ": failed to get a relocated section: " + 6136 toString(RelSecOrErr.takeError())); 6137 continue; 6138 } 6139 const Elf_Shdr *ContentsSec = *RelSecOrErr; 6140 if (IsMatch(*ContentsSec)) 6141 SecToRelocMap[ContentsSec] = &Sec; 6142 } 6143 } 6144 6145 template <class ELFT> 6146 void ELFDumper<ELFT>::printRelocatableStackSizes( 6147 std::function<void()> PrintHeader) { 6148 // Build a map between stack size sections and their corresponding relocation 6149 // sections. 6150 llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> StackSizeRelocMap; 6151 auto IsMatch = [&](const Elf_Shdr &Sec) -> bool { 6152 StringRef SectionName; 6153 if (Expected<StringRef> NameOrErr = Obj.getSectionName(Sec)) 6154 SectionName = *NameOrErr; 6155 else 6156 consumeError(NameOrErr.takeError()); 6157 6158 return SectionName == ".stack_sizes"; 6159 }; 6160 getSectionAndRelocations(IsMatch, StackSizeRelocMap); 6161 6162 for (const auto &StackSizeMapEntry : StackSizeRelocMap) { 6163 PrintHeader(); 6164 const Elf_Shdr *StackSizesELFSec = StackSizeMapEntry.first; 6165 const Elf_Shdr *RelocSec = StackSizeMapEntry.second; 6166 6167 // Warn about stack size sections without a relocation section. 6168 if (!RelocSec) { 6169 reportWarning(createError(".stack_sizes (" + describe(*StackSizesELFSec) + 6170 ") does not have a corresponding " 6171 "relocation section"), 6172 FileName); 6173 continue; 6174 } 6175 6176 // A .stack_sizes section header's sh_link field is supposed to point 6177 // to the section that contains the functions whose stack sizes are 6178 // described in it. 6179 const Elf_Shdr *FunctionSec = unwrapOrError( 6180 this->FileName, Obj.getSection(StackSizesELFSec->sh_link)); 6181 6182 SupportsRelocation IsSupportedFn; 6183 RelocationResolver Resolver; 6184 std::tie(IsSupportedFn, Resolver) = getRelocationResolver(this->ObjF); 6185 ArrayRef<uint8_t> Contents = 6186 unwrapOrError(this->FileName, Obj.getSectionContents(*StackSizesELFSec)); 6187 DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr)); 6188 6189 forEachRelocationDo( 6190 *RelocSec, /*RawRelr=*/false, 6191 [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec, 6192 const Elf_Shdr *SymTab) { 6193 if (!IsSupportedFn || !IsSupportedFn(R.Type)) { 6194 reportUniqueWarning( 6195 describe(*RelocSec) + 6196 " contains an unsupported relocation with index " + Twine(Ndx) + 6197 ": " + Obj.getRelocationTypeName(R.Type)); 6198 return; 6199 } 6200 6201 this->printStackSize(R, *RelocSec, Ndx, SymTab, FunctionSec, 6202 *StackSizesELFSec, Resolver, Data); 6203 }, 6204 [](const Elf_Relr &) { 6205 llvm_unreachable("can't get here, because we only support " 6206 "SHT_REL/SHT_RELA sections"); 6207 }); 6208 } 6209 } 6210 6211 template <class ELFT> 6212 void GNUELFDumper<ELFT>::printStackSizes() { 6213 bool HeaderHasBeenPrinted = false; 6214 auto PrintHeader = [&]() { 6215 if (HeaderHasBeenPrinted) 6216 return; 6217 OS << "\nStack Sizes:\n"; 6218 OS.PadToColumn(9); 6219 OS << "Size"; 6220 OS.PadToColumn(18); 6221 OS << "Functions\n"; 6222 HeaderHasBeenPrinted = true; 6223 }; 6224 6225 // For non-relocatable objects, look directly for sections whose name starts 6226 // with .stack_sizes and process the contents. 6227 if (this->Obj.getHeader().e_type == ELF::ET_REL) 6228 this->printRelocatableStackSizes(PrintHeader); 6229 else 6230 this->printNonRelocatableStackSizes(PrintHeader); 6231 } 6232 6233 template <class ELFT> 6234 void GNUELFDumper<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 6235 size_t Bias = ELFT::Is64Bits ? 8 : 0; 6236 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 6237 OS.PadToColumn(2); 6238 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 6239 OS.PadToColumn(11 + Bias); 6240 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 6241 OS.PadToColumn(22 + Bias); 6242 OS << format_hex_no_prefix(*E, 8 + Bias); 6243 OS.PadToColumn(31 + 2 * Bias); 6244 OS << Purpose << "\n"; 6245 }; 6246 6247 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 6248 OS << " Canonical gp value: " 6249 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 6250 6251 OS << " Reserved entries:\n"; 6252 if (ELFT::Is64Bits) 6253 OS << " Address Access Initial Purpose\n"; 6254 else 6255 OS << " Address Access Initial Purpose\n"; 6256 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 6257 if (Parser.getGotModulePointer()) 6258 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 6259 6260 if (!Parser.getLocalEntries().empty()) { 6261 OS << "\n"; 6262 OS << " Local entries:\n"; 6263 if (ELFT::Is64Bits) 6264 OS << " Address Access Initial\n"; 6265 else 6266 OS << " Address Access Initial\n"; 6267 for (auto &E : Parser.getLocalEntries()) 6268 PrintEntry(&E, ""); 6269 } 6270 6271 if (Parser.IsStatic) 6272 return; 6273 6274 if (!Parser.getGlobalEntries().empty()) { 6275 OS << "\n"; 6276 OS << " Global entries:\n"; 6277 if (ELFT::Is64Bits) 6278 OS << " Address Access Initial Sym.Val." 6279 << " Type Ndx Name\n"; 6280 else 6281 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 6282 6283 DataRegion<Elf_Word> ShndxTable( 6284 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 6285 for (auto &E : Parser.getGlobalEntries()) { 6286 const Elf_Sym &Sym = *Parser.getGotSym(&E); 6287 const Elf_Sym &FirstSym = this->dynamic_symbols()[0]; 6288 std::string SymName = this->getFullSymbolName( 6289 Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, false); 6290 6291 OS.PadToColumn(2); 6292 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 6293 OS.PadToColumn(11 + Bias); 6294 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 6295 OS.PadToColumn(22 + Bias); 6296 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 6297 OS.PadToColumn(31 + 2 * Bias); 6298 OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias)); 6299 OS.PadToColumn(40 + 3 * Bias); 6300 OS << enumToString(Sym.getType(), makeArrayRef(ElfSymbolTypes)); 6301 OS.PadToColumn(48 + 3 * Bias); 6302 OS << getSymbolSectionNdx(Sym, &Sym - this->dynamic_symbols().begin(), 6303 ShndxTable); 6304 OS.PadToColumn(52 + 3 * Bias); 6305 OS << SymName << "\n"; 6306 } 6307 } 6308 6309 if (!Parser.getOtherEntries().empty()) 6310 OS << "\n Number of TLS and multi-GOT entries " 6311 << Parser.getOtherEntries().size() << "\n"; 6312 } 6313 6314 template <class ELFT> 6315 void GNUELFDumper<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 6316 size_t Bias = ELFT::Is64Bits ? 8 : 0; 6317 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 6318 OS.PadToColumn(2); 6319 OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias); 6320 OS.PadToColumn(11 + Bias); 6321 OS << format_hex_no_prefix(*E, 8 + Bias); 6322 OS.PadToColumn(20 + 2 * Bias); 6323 OS << Purpose << "\n"; 6324 }; 6325 6326 OS << "PLT GOT:\n\n"; 6327 6328 OS << " Reserved entries:\n"; 6329 OS << " Address Initial Purpose\n"; 6330 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 6331 if (Parser.getPltModulePointer()) 6332 PrintEntry(Parser.getPltModulePointer(), "Module pointer"); 6333 6334 if (!Parser.getPltEntries().empty()) { 6335 OS << "\n"; 6336 OS << " Entries:\n"; 6337 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 6338 DataRegion<Elf_Word> ShndxTable( 6339 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 6340 for (auto &E : Parser.getPltEntries()) { 6341 const Elf_Sym &Sym = *Parser.getPltSym(&E); 6342 const Elf_Sym &FirstSym = *cantFail( 6343 this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0)); 6344 std::string SymName = this->getFullSymbolName( 6345 Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, false); 6346 6347 OS.PadToColumn(2); 6348 OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias)); 6349 OS.PadToColumn(11 + Bias); 6350 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 6351 OS.PadToColumn(20 + 2 * Bias); 6352 OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias)); 6353 OS.PadToColumn(29 + 3 * Bias); 6354 OS << enumToString(Sym.getType(), makeArrayRef(ElfSymbolTypes)); 6355 OS.PadToColumn(37 + 3 * Bias); 6356 OS << getSymbolSectionNdx(Sym, &Sym - this->dynamic_symbols().begin(), 6357 ShndxTable); 6358 OS.PadToColumn(41 + 3 * Bias); 6359 OS << SymName << "\n"; 6360 } 6361 } 6362 } 6363 6364 template <class ELFT> 6365 Expected<const Elf_Mips_ABIFlags<ELFT> *> 6366 getMipsAbiFlagsSection(const ELFDumper<ELFT> &Dumper) { 6367 const typename ELFT::Shdr *Sec = Dumper.findSectionByName(".MIPS.abiflags"); 6368 if (Sec == nullptr) 6369 return nullptr; 6370 6371 constexpr StringRef ErrPrefix = "unable to read the .MIPS.abiflags section: "; 6372 Expected<ArrayRef<uint8_t>> DataOrErr = 6373 Dumper.getElfObject().getELFFile().getSectionContents(*Sec); 6374 if (!DataOrErr) 6375 return createError(ErrPrefix + toString(DataOrErr.takeError())); 6376 6377 if (DataOrErr->size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) 6378 return createError(ErrPrefix + "it has a wrong size (" + 6379 Twine(DataOrErr->size()) + ")"); 6380 return reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(DataOrErr->data()); 6381 } 6382 6383 template <class ELFT> void GNUELFDumper<ELFT>::printMipsABIFlags() { 6384 const Elf_Mips_ABIFlags<ELFT> *Flags = nullptr; 6385 if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr = 6386 getMipsAbiFlagsSection(*this)) 6387 Flags = *SecOrErr; 6388 else 6389 this->reportUniqueWarning(SecOrErr.takeError()); 6390 if (!Flags) 6391 return; 6392 6393 OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n"; 6394 OS << "ISA: MIPS" << int(Flags->isa_level); 6395 if (Flags->isa_rev > 1) 6396 OS << "r" << int(Flags->isa_rev); 6397 OS << "\n"; 6398 OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n"; 6399 OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n"; 6400 OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n"; 6401 OS << "FP ABI: " 6402 << enumToString(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)) << "\n"; 6403 OS << "ISA Extension: " 6404 << enumToString(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n"; 6405 if (Flags->ases == 0) 6406 OS << "ASEs: None\n"; 6407 else 6408 // FIXME: Print each flag on a separate line. 6409 OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags)) 6410 << "\n"; 6411 OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n"; 6412 OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n"; 6413 OS << "\n"; 6414 } 6415 6416 template <class ELFT> void LLVMELFDumper<ELFT>::printFileHeaders() { 6417 const Elf_Ehdr &E = this->Obj.getHeader(); 6418 { 6419 DictScope D(W, "ElfHeader"); 6420 { 6421 DictScope D(W, "Ident"); 6422 W.printBinary("Magic", makeArrayRef(E.e_ident).slice(ELF::EI_MAG0, 4)); 6423 W.printEnum("Class", E.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 6424 W.printEnum("DataEncoding", E.e_ident[ELF::EI_DATA], 6425 makeArrayRef(ElfDataEncoding)); 6426 W.printNumber("FileVersion", E.e_ident[ELF::EI_VERSION]); 6427 6428 auto OSABI = makeArrayRef(ElfOSABI); 6429 if (E.e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 6430 E.e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 6431 switch (E.e_machine) { 6432 case ELF::EM_AMDGPU: 6433 OSABI = makeArrayRef(AMDGPUElfOSABI); 6434 break; 6435 case ELF::EM_ARM: 6436 OSABI = makeArrayRef(ARMElfOSABI); 6437 break; 6438 case ELF::EM_TI_C6000: 6439 OSABI = makeArrayRef(C6000ElfOSABI); 6440 break; 6441 } 6442 } 6443 W.printEnum("OS/ABI", E.e_ident[ELF::EI_OSABI], OSABI); 6444 W.printNumber("ABIVersion", E.e_ident[ELF::EI_ABIVERSION]); 6445 W.printBinary("Unused", makeArrayRef(E.e_ident).slice(ELF::EI_PAD)); 6446 } 6447 6448 std::string TypeStr; 6449 if (const EnumEntry<unsigned> *Ent = getObjectFileEnumEntry(E.e_type)) { 6450 TypeStr = Ent->Name.str(); 6451 } else { 6452 if (E.e_type >= ET_LOPROC) 6453 TypeStr = "Processor Specific"; 6454 else if (E.e_type >= ET_LOOS) 6455 TypeStr = "OS Specific"; 6456 else 6457 TypeStr = "Unknown"; 6458 } 6459 W.printString("Type", TypeStr + " (0x" + to_hexString(E.e_type) + ")"); 6460 6461 W.printEnum("Machine", E.e_machine, makeArrayRef(ElfMachineType)); 6462 W.printNumber("Version", E.e_version); 6463 W.printHex("Entry", E.e_entry); 6464 W.printHex("ProgramHeaderOffset", E.e_phoff); 6465 W.printHex("SectionHeaderOffset", E.e_shoff); 6466 if (E.e_machine == EM_MIPS) 6467 W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderMipsFlags), 6468 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 6469 unsigned(ELF::EF_MIPS_MACH)); 6470 else if (E.e_machine == EM_AMDGPU) { 6471 switch (E.e_ident[ELF::EI_ABIVERSION]) { 6472 default: 6473 W.printHex("Flags", E.e_flags); 6474 break; 6475 case 0: 6476 // ELFOSABI_AMDGPU_PAL, ELFOSABI_AMDGPU_MESA3D support *_V3 flags. 6477 LLVM_FALLTHROUGH; 6478 case ELF::ELFABIVERSION_AMDGPU_HSA_V3: 6479 W.printFlags("Flags", E.e_flags, 6480 makeArrayRef(ElfHeaderAMDGPUFlagsABIVersion3), 6481 unsigned(ELF::EF_AMDGPU_MACH)); 6482 break; 6483 case ELF::ELFABIVERSION_AMDGPU_HSA_V4: 6484 case ELF::ELFABIVERSION_AMDGPU_HSA_V5: 6485 W.printFlags("Flags", E.e_flags, 6486 makeArrayRef(ElfHeaderAMDGPUFlagsABIVersion4), 6487 unsigned(ELF::EF_AMDGPU_MACH), 6488 unsigned(ELF::EF_AMDGPU_FEATURE_XNACK_V4), 6489 unsigned(ELF::EF_AMDGPU_FEATURE_SRAMECC_V4)); 6490 break; 6491 } 6492 } else if (E.e_machine == EM_RISCV) 6493 W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 6494 else if (E.e_machine == EM_AVR) 6495 W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderAVRFlags), 6496 unsigned(ELF::EF_AVR_ARCH_MASK)); 6497 else 6498 W.printFlags("Flags", E.e_flags); 6499 W.printNumber("HeaderSize", E.e_ehsize); 6500 W.printNumber("ProgramHeaderEntrySize", E.e_phentsize); 6501 W.printNumber("ProgramHeaderCount", E.e_phnum); 6502 W.printNumber("SectionHeaderEntrySize", E.e_shentsize); 6503 W.printString("SectionHeaderCount", 6504 getSectionHeadersNumString(this->Obj, this->FileName)); 6505 W.printString("StringTableSectionIndex", 6506 getSectionHeaderTableIndexString(this->Obj, this->FileName)); 6507 } 6508 } 6509 6510 template <class ELFT> void LLVMELFDumper<ELFT>::printGroupSections() { 6511 DictScope Lists(W, "Groups"); 6512 std::vector<GroupSection> V = this->getGroups(); 6513 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 6514 for (const GroupSection &G : V) { 6515 DictScope D(W, "Group"); 6516 W.printNumber("Name", G.Name, G.ShName); 6517 W.printNumber("Index", G.Index); 6518 W.printNumber("Link", G.Link); 6519 W.printNumber("Info", G.Info); 6520 W.printHex("Type", getGroupType(G.Type), G.Type); 6521 W.startLine() << "Signature: " << G.Signature << "\n"; 6522 6523 ListScope L(W, "Section(s) in group"); 6524 for (const GroupMember &GM : G.Members) { 6525 const GroupSection *MainGroup = Map[GM.Index]; 6526 if (MainGroup != &G) 6527 this->reportUniqueWarning( 6528 "section with index " + Twine(GM.Index) + 6529 ", included in the group section with index " + 6530 Twine(MainGroup->Index) + 6531 ", was also found in the group section with index " + 6532 Twine(G.Index)); 6533 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 6534 } 6535 } 6536 6537 if (V.empty()) 6538 W.startLine() << "There are no group sections in the file.\n"; 6539 } 6540 6541 template <class ELFT> void LLVMELFDumper<ELFT>::printRelocations() { 6542 ListScope D(W, "Relocations"); 6543 6544 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 6545 if (!isRelocationSec<ELFT>(Sec)) 6546 continue; 6547 6548 StringRef Name = this->getPrintableSectionName(Sec); 6549 unsigned SecNdx = &Sec - &cantFail(this->Obj.sections()).front(); 6550 W.startLine() << "Section (" << SecNdx << ") " << Name << " {\n"; 6551 W.indent(); 6552 this->printRelocationsHelper(Sec); 6553 W.unindent(); 6554 W.startLine() << "}\n"; 6555 } 6556 } 6557 6558 template <class ELFT> 6559 void LLVMELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) { 6560 W.startLine() << W.hex(R) << "\n"; 6561 } 6562 6563 template <class ELFT> 6564 void LLVMELFDumper<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R, 6565 const RelSymbol<ELFT> &RelSym) { 6566 StringRef SymbolName = RelSym.Name; 6567 SmallString<32> RelocName; 6568 this->Obj.getRelocationTypeName(R.Type, RelocName); 6569 6570 if (opts::ExpandRelocs) { 6571 DictScope Group(W, "Relocation"); 6572 W.printHex("Offset", R.Offset); 6573 W.printNumber("Type", RelocName, R.Type); 6574 W.printNumber("Symbol", !SymbolName.empty() ? SymbolName : "-", R.Symbol); 6575 if (R.Addend) 6576 W.printHex("Addend", (uintX_t)*R.Addend); 6577 } else { 6578 raw_ostream &OS = W.startLine(); 6579 OS << W.hex(R.Offset) << " " << RelocName << " " 6580 << (!SymbolName.empty() ? SymbolName : "-"); 6581 if (R.Addend) 6582 OS << " " << W.hex((uintX_t)*R.Addend); 6583 OS << "\n"; 6584 } 6585 } 6586 6587 template <class ELFT> void LLVMELFDumper<ELFT>::printSectionHeaders() { 6588 ListScope SectionsD(W, "Sections"); 6589 6590 int SectionIndex = -1; 6591 std::vector<EnumEntry<unsigned>> FlagsList = 6592 getSectionFlagsForTarget(this->Obj.getHeader().e_ident[ELF::EI_OSABI], 6593 this->Obj.getHeader().e_machine); 6594 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 6595 DictScope SectionD(W, "Section"); 6596 W.printNumber("Index", ++SectionIndex); 6597 W.printNumber("Name", this->getPrintableSectionName(Sec), Sec.sh_name); 6598 W.printHex("Type", 6599 object::getELFSectionTypeName(this->Obj.getHeader().e_machine, 6600 Sec.sh_type), 6601 Sec.sh_type); 6602 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList)); 6603 W.printHex("Address", Sec.sh_addr); 6604 W.printHex("Offset", Sec.sh_offset); 6605 W.printNumber("Size", Sec.sh_size); 6606 W.printNumber("Link", Sec.sh_link); 6607 W.printNumber("Info", Sec.sh_info); 6608 W.printNumber("AddressAlignment", Sec.sh_addralign); 6609 W.printNumber("EntrySize", Sec.sh_entsize); 6610 6611 if (opts::SectionRelocations) { 6612 ListScope D(W, "Relocations"); 6613 this->printRelocationsHelper(Sec); 6614 } 6615 6616 if (opts::SectionSymbols) { 6617 ListScope D(W, "Symbols"); 6618 if (this->DotSymtabSec) { 6619 StringRef StrTable = unwrapOrError( 6620 this->FileName, 6621 this->Obj.getStringTableForSymtab(*this->DotSymtabSec)); 6622 ArrayRef<Elf_Word> ShndxTable = this->getShndxTable(this->DotSymtabSec); 6623 6624 typename ELFT::SymRange Symbols = unwrapOrError( 6625 this->FileName, this->Obj.symbols(this->DotSymtabSec)); 6626 for (const Elf_Sym &Sym : Symbols) { 6627 const Elf_Shdr *SymSec = unwrapOrError( 6628 this->FileName, 6629 this->Obj.getSection(Sym, this->DotSymtabSec, ShndxTable)); 6630 if (SymSec == &Sec) 6631 printSymbol(Sym, &Sym - &Symbols[0], ShndxTable, StrTable, false, 6632 false); 6633 } 6634 } 6635 } 6636 6637 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 6638 ArrayRef<uint8_t> Data = 6639 unwrapOrError(this->FileName, this->Obj.getSectionContents(Sec)); 6640 W.printBinaryBlock( 6641 "SectionData", 6642 StringRef(reinterpret_cast<const char *>(Data.data()), Data.size())); 6643 } 6644 } 6645 } 6646 6647 template <class ELFT> 6648 void LLVMELFDumper<ELFT>::printSymbolSection( 6649 const Elf_Sym &Symbol, unsigned SymIndex, 6650 DataRegion<Elf_Word> ShndxTable) const { 6651 auto GetSectionSpecialType = [&]() -> Optional<StringRef> { 6652 if (Symbol.isUndefined()) 6653 return StringRef("Undefined"); 6654 if (Symbol.isProcessorSpecific()) 6655 return StringRef("Processor Specific"); 6656 if (Symbol.isOSSpecific()) 6657 return StringRef("Operating System Specific"); 6658 if (Symbol.isAbsolute()) 6659 return StringRef("Absolute"); 6660 if (Symbol.isCommon()) 6661 return StringRef("Common"); 6662 if (Symbol.isReserved() && Symbol.st_shndx != SHN_XINDEX) 6663 return StringRef("Reserved"); 6664 return None; 6665 }; 6666 6667 if (Optional<StringRef> Type = GetSectionSpecialType()) { 6668 W.printHex("Section", *Type, Symbol.st_shndx); 6669 return; 6670 } 6671 6672 Expected<unsigned> SectionIndex = 6673 this->getSymbolSectionIndex(Symbol, SymIndex, ShndxTable); 6674 if (!SectionIndex) { 6675 assert(Symbol.st_shndx == SHN_XINDEX && 6676 "getSymbolSectionIndex should only fail due to an invalid " 6677 "SHT_SYMTAB_SHNDX table/reference"); 6678 this->reportUniqueWarning(SectionIndex.takeError()); 6679 W.printHex("Section", "Reserved", SHN_XINDEX); 6680 return; 6681 } 6682 6683 Expected<StringRef> SectionName = 6684 this->getSymbolSectionName(Symbol, *SectionIndex); 6685 if (!SectionName) { 6686 // Don't report an invalid section name if the section headers are missing. 6687 // In such situations, all sections will be "invalid". 6688 if (!this->ObjF.sections().empty()) 6689 this->reportUniqueWarning(SectionName.takeError()); 6690 else 6691 consumeError(SectionName.takeError()); 6692 W.printHex("Section", "<?>", *SectionIndex); 6693 } else { 6694 W.printHex("Section", *SectionName, *SectionIndex); 6695 } 6696 } 6697 6698 template <class ELFT> 6699 void LLVMELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex, 6700 DataRegion<Elf_Word> ShndxTable, 6701 Optional<StringRef> StrTable, 6702 bool IsDynamic, 6703 bool /*NonVisibilityBitsUsed*/) const { 6704 std::string FullSymbolName = this->getFullSymbolName( 6705 Symbol, SymIndex, ShndxTable, StrTable, IsDynamic); 6706 unsigned char SymbolType = Symbol.getType(); 6707 6708 DictScope D(W, "Symbol"); 6709 W.printNumber("Name", FullSymbolName, Symbol.st_name); 6710 W.printHex("Value", Symbol.st_value); 6711 W.printNumber("Size", Symbol.st_size); 6712 W.printEnum("Binding", Symbol.getBinding(), makeArrayRef(ElfSymbolBindings)); 6713 if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU && 6714 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 6715 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 6716 else 6717 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 6718 if (Symbol.st_other == 0) 6719 // Usually st_other flag is zero. Do not pollute the output 6720 // by flags enumeration in that case. 6721 W.printNumber("Other", 0); 6722 else { 6723 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 6724 std::end(ElfSymOtherFlags)); 6725 if (this->Obj.getHeader().e_machine == EM_MIPS) { 6726 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 6727 // flag overlapped with other ST_MIPS_xxx flags. So consider both 6728 // cases separately. 6729 if ((Symbol.st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 6730 SymOtherFlags.insert(SymOtherFlags.end(), 6731 std::begin(ElfMips16SymOtherFlags), 6732 std::end(ElfMips16SymOtherFlags)); 6733 else 6734 SymOtherFlags.insert(SymOtherFlags.end(), 6735 std::begin(ElfMipsSymOtherFlags), 6736 std::end(ElfMipsSymOtherFlags)); 6737 } else if (this->Obj.getHeader().e_machine == EM_AARCH64) { 6738 SymOtherFlags.insert(SymOtherFlags.end(), 6739 std::begin(ElfAArch64SymOtherFlags), 6740 std::end(ElfAArch64SymOtherFlags)); 6741 } else if (this->Obj.getHeader().e_machine == EM_RISCV) { 6742 SymOtherFlags.insert(SymOtherFlags.end(), 6743 std::begin(ElfRISCVSymOtherFlags), 6744 std::end(ElfRISCVSymOtherFlags)); 6745 } 6746 W.printFlags("Other", Symbol.st_other, makeArrayRef(SymOtherFlags), 0x3u); 6747 } 6748 printSymbolSection(Symbol, SymIndex, ShndxTable); 6749 } 6750 6751 template <class ELFT> 6752 void LLVMELFDumper<ELFT>::printSymbols(bool PrintSymbols, 6753 bool PrintDynamicSymbols) { 6754 if (PrintSymbols) { 6755 ListScope Group(W, "Symbols"); 6756 this->printSymbolsHelper(false); 6757 } 6758 if (PrintDynamicSymbols) { 6759 ListScope Group(W, "DynamicSymbols"); 6760 this->printSymbolsHelper(true); 6761 } 6762 } 6763 6764 template <class ELFT> void LLVMELFDumper<ELFT>::printDynamicTable() { 6765 Elf_Dyn_Range Table = this->dynamic_table(); 6766 if (Table.empty()) 6767 return; 6768 6769 W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n"; 6770 6771 size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table); 6772 // The "Name/Value" column should be indented from the "Type" column by N 6773 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 6774 // space (1) = -3. 6775 W.startLine() << " Tag" << std::string(ELFT::Is64Bits ? 16 : 8, ' ') 6776 << "Type" << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 6777 6778 std::string ValueFmt = "%-" + std::to_string(MaxTagSize) + "s "; 6779 for (auto Entry : Table) { 6780 uintX_t Tag = Entry.getTag(); 6781 std::string Value = this->getDynamicEntry(Tag, Entry.getVal()); 6782 W.startLine() << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10, true) 6783 << " " 6784 << format(ValueFmt.c_str(), 6785 this->Obj.getDynamicTagAsString(Tag).c_str()) 6786 << Value << "\n"; 6787 } 6788 W.startLine() << "]\n"; 6789 } 6790 6791 template <class ELFT> void LLVMELFDumper<ELFT>::printDynamicRelocations() { 6792 W.startLine() << "Dynamic Relocations {\n"; 6793 W.indent(); 6794 this->printDynamicRelocationsHelper(); 6795 W.unindent(); 6796 W.startLine() << "}\n"; 6797 } 6798 6799 template <class ELFT> 6800 void LLVMELFDumper<ELFT>::printProgramHeaders( 6801 bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { 6802 if (PrintProgramHeaders) 6803 printProgramHeaders(); 6804 if (PrintSectionMapping == cl::BOU_TRUE) 6805 printSectionMapping(); 6806 } 6807 6808 template <class ELFT> void LLVMELFDumper<ELFT>::printProgramHeaders() { 6809 ListScope L(W, "ProgramHeaders"); 6810 6811 Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers(); 6812 if (!PhdrsOrErr) { 6813 this->reportUniqueWarning("unable to dump program headers: " + 6814 toString(PhdrsOrErr.takeError())); 6815 return; 6816 } 6817 6818 for (const Elf_Phdr &Phdr : *PhdrsOrErr) { 6819 DictScope P(W, "ProgramHeader"); 6820 StringRef Type = 6821 segmentTypeToString(this->Obj.getHeader().e_machine, Phdr.p_type); 6822 6823 W.printHex("Type", Type.empty() ? "Unknown" : Type, Phdr.p_type); 6824 W.printHex("Offset", Phdr.p_offset); 6825 W.printHex("VirtualAddress", Phdr.p_vaddr); 6826 W.printHex("PhysicalAddress", Phdr.p_paddr); 6827 W.printNumber("FileSize", Phdr.p_filesz); 6828 W.printNumber("MemSize", Phdr.p_memsz); 6829 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 6830 W.printNumber("Alignment", Phdr.p_align); 6831 } 6832 } 6833 6834 template <class ELFT> 6835 void LLVMELFDumper<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) { 6836 ListScope SS(W, "VersionSymbols"); 6837 if (!Sec) 6838 return; 6839 6840 StringRef StrTable; 6841 ArrayRef<Elf_Sym> Syms; 6842 const Elf_Shdr *SymTabSec; 6843 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 6844 this->getVersionTable(*Sec, &Syms, &StrTable, &SymTabSec); 6845 if (!VerTableOrErr) { 6846 this->reportUniqueWarning(VerTableOrErr.takeError()); 6847 return; 6848 } 6849 6850 if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size()) 6851 return; 6852 6853 ArrayRef<Elf_Word> ShNdxTable = this->getShndxTable(SymTabSec); 6854 for (size_t I = 0, E = Syms.size(); I < E; ++I) { 6855 DictScope S(W, "Symbol"); 6856 W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION); 6857 W.printString("Name", 6858 this->getFullSymbolName(Syms[I], I, ShNdxTable, StrTable, 6859 /*IsDynamic=*/true)); 6860 } 6861 } 6862 6863 const EnumEntry<unsigned> SymVersionFlags[] = { 6864 {"Base", "BASE", VER_FLG_BASE}, 6865 {"Weak", "WEAK", VER_FLG_WEAK}, 6866 {"Info", "INFO", VER_FLG_INFO}}; 6867 6868 template <class ELFT> 6869 void LLVMELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) { 6870 ListScope SD(W, "VersionDefinitions"); 6871 if (!Sec) 6872 return; 6873 6874 Expected<std::vector<VerDef>> V = this->Obj.getVersionDefinitions(*Sec); 6875 if (!V) { 6876 this->reportUniqueWarning(V.takeError()); 6877 return; 6878 } 6879 6880 for (const VerDef &D : *V) { 6881 DictScope Def(W, "Definition"); 6882 W.printNumber("Version", D.Version); 6883 W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags)); 6884 W.printNumber("Index", D.Ndx); 6885 W.printNumber("Hash", D.Hash); 6886 W.printString("Name", D.Name.c_str()); 6887 W.printList( 6888 "Predecessors", D.AuxV, 6889 [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); }); 6890 } 6891 } 6892 6893 template <class ELFT> 6894 void LLVMELFDumper<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) { 6895 ListScope SD(W, "VersionRequirements"); 6896 if (!Sec) 6897 return; 6898 6899 Expected<std::vector<VerNeed>> V = 6900 this->Obj.getVersionDependencies(*Sec, this->WarningHandler); 6901 if (!V) { 6902 this->reportUniqueWarning(V.takeError()); 6903 return; 6904 } 6905 6906 for (const VerNeed &VN : *V) { 6907 DictScope Entry(W, "Dependency"); 6908 W.printNumber("Version", VN.Version); 6909 W.printNumber("Count", VN.Cnt); 6910 W.printString("FileName", VN.File.c_str()); 6911 6912 ListScope L(W, "Entries"); 6913 for (const VernAux &Aux : VN.AuxV) { 6914 DictScope Entry(W, "Entry"); 6915 W.printNumber("Hash", Aux.Hash); 6916 W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags)); 6917 W.printNumber("Index", Aux.Other); 6918 W.printString("Name", Aux.Name.c_str()); 6919 } 6920 } 6921 } 6922 6923 template <class ELFT> void LLVMELFDumper<ELFT>::printHashHistograms() { 6924 W.startLine() << "Hash Histogram not implemented!\n"; 6925 } 6926 6927 // Returns true if rel/rela section exists, and populates SymbolIndices. 6928 // Otherwise returns false. 6929 template <class ELFT> 6930 static bool getSymbolIndices(const typename ELFT::Shdr *CGRelSection, 6931 const ELFFile<ELFT> &Obj, 6932 const LLVMELFDumper<ELFT> *Dumper, 6933 SmallVector<uint32_t, 128> &SymbolIndices) { 6934 if (!CGRelSection) { 6935 Dumper->reportUniqueWarning( 6936 "relocation section for a call graph section doesn't exist"); 6937 return false; 6938 } 6939 6940 if (CGRelSection->sh_type == SHT_REL) { 6941 typename ELFT::RelRange CGProfileRel; 6942 Expected<typename ELFT::RelRange> CGProfileRelOrError = 6943 Obj.rels(*CGRelSection); 6944 if (!CGProfileRelOrError) { 6945 Dumper->reportUniqueWarning("unable to load relocations for " 6946 "SHT_LLVM_CALL_GRAPH_PROFILE section: " + 6947 toString(CGProfileRelOrError.takeError())); 6948 return false; 6949 } 6950 6951 CGProfileRel = *CGProfileRelOrError; 6952 for (const typename ELFT::Rel &Rel : CGProfileRel) 6953 SymbolIndices.push_back(Rel.getSymbol(Obj.isMips64EL())); 6954 } else { 6955 // MC unconditionally produces SHT_REL, but GNU strip/objcopy may convert 6956 // the format to SHT_RELA 6957 // (https://sourceware.org/bugzilla/show_bug.cgi?id=28035) 6958 typename ELFT::RelaRange CGProfileRela; 6959 Expected<typename ELFT::RelaRange> CGProfileRelaOrError = 6960 Obj.relas(*CGRelSection); 6961 if (!CGProfileRelaOrError) { 6962 Dumper->reportUniqueWarning("unable to load relocations for " 6963 "SHT_LLVM_CALL_GRAPH_PROFILE section: " + 6964 toString(CGProfileRelaOrError.takeError())); 6965 return false; 6966 } 6967 6968 CGProfileRela = *CGProfileRelaOrError; 6969 for (const typename ELFT::Rela &Rela : CGProfileRela) 6970 SymbolIndices.push_back(Rela.getSymbol(Obj.isMips64EL())); 6971 } 6972 6973 return true; 6974 } 6975 6976 template <class ELFT> void LLVMELFDumper<ELFT>::printCGProfile() { 6977 llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> SecToRelocMap; 6978 6979 auto IsMatch = [](const Elf_Shdr &Sec) -> bool { 6980 return Sec.sh_type == ELF::SHT_LLVM_CALL_GRAPH_PROFILE; 6981 }; 6982 this->getSectionAndRelocations(IsMatch, SecToRelocMap); 6983 6984 for (const auto &CGMapEntry : SecToRelocMap) { 6985 const Elf_Shdr *CGSection = CGMapEntry.first; 6986 const Elf_Shdr *CGRelSection = CGMapEntry.second; 6987 6988 Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr = 6989 this->Obj.template getSectionContentsAsArray<Elf_CGProfile>(*CGSection); 6990 if (!CGProfileOrErr) { 6991 this->reportUniqueWarning( 6992 "unable to load the SHT_LLVM_CALL_GRAPH_PROFILE section: " + 6993 toString(CGProfileOrErr.takeError())); 6994 return; 6995 } 6996 6997 SmallVector<uint32_t, 128> SymbolIndices; 6998 bool UseReloc = 6999 getSymbolIndices<ELFT>(CGRelSection, this->Obj, this, SymbolIndices); 7000 if (UseReloc && SymbolIndices.size() != CGProfileOrErr->size() * 2) { 7001 this->reportUniqueWarning( 7002 "number of from/to pairs does not match number of frequencies"); 7003 UseReloc = false; 7004 } 7005 7006 ListScope L(W, "CGProfile"); 7007 for (uint32_t I = 0, Size = CGProfileOrErr->size(); I != Size; ++I) { 7008 const Elf_CGProfile &CGPE = (*CGProfileOrErr)[I]; 7009 DictScope D(W, "CGProfileEntry"); 7010 if (UseReloc) { 7011 uint32_t From = SymbolIndices[I * 2]; 7012 uint32_t To = SymbolIndices[I * 2 + 1]; 7013 W.printNumber("From", this->getStaticSymbolName(From), From); 7014 W.printNumber("To", this->getStaticSymbolName(To), To); 7015 } 7016 W.printNumber("Weight", CGPE.cgp_weight); 7017 } 7018 } 7019 } 7020 7021 template <class ELFT> void LLVMELFDumper<ELFT>::printBBAddrMaps() { 7022 bool IsRelocatable = this->Obj.getHeader().e_type == ELF::ET_REL; 7023 for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) { 7024 if (Sec.sh_type != SHT_LLVM_BB_ADDR_MAP) 7025 continue; 7026 Optional<const Elf_Shdr *> FunctionSec = None; 7027 if (IsRelocatable) 7028 FunctionSec = 7029 unwrapOrError(this->FileName, this->Obj.getSection(Sec.sh_link)); 7030 ListScope L(W, "BBAddrMap"); 7031 Expected<std::vector<BBAddrMap>> BBAddrMapOrErr = 7032 this->Obj.decodeBBAddrMap(Sec); 7033 if (!BBAddrMapOrErr) { 7034 this->reportUniqueWarning("unable to dump " + this->describe(Sec) + ": " + 7035 toString(BBAddrMapOrErr.takeError())); 7036 continue; 7037 } 7038 for (const BBAddrMap &AM : *BBAddrMapOrErr) { 7039 DictScope D(W, "Function"); 7040 W.printHex("At", AM.Addr); 7041 SmallVector<uint32_t> FuncSymIndex = 7042 this->getSymbolIndexesForFunctionAddress(AM.Addr, FunctionSec); 7043 std::string FuncName = "<?>"; 7044 if (FuncSymIndex.empty()) 7045 this->reportUniqueWarning( 7046 "could not identify function symbol for address (0x" + 7047 Twine::utohexstr(AM.Addr) + ") in " + this->describe(Sec)); 7048 else 7049 FuncName = this->getStaticSymbolName(FuncSymIndex.front()); 7050 W.printString("Name", FuncName); 7051 7052 ListScope L(W, "BB entries"); 7053 for (const BBAddrMap::BBEntry &BBE : AM.BBEntries) { 7054 DictScope L(W); 7055 W.printHex("Offset", BBE.Offset); 7056 W.printHex("Size", BBE.Size); 7057 W.printBoolean("HasReturn", BBE.HasReturn); 7058 W.printBoolean("HasTailCall", BBE.HasTailCall); 7059 W.printBoolean("IsEHPad", BBE.IsEHPad); 7060 W.printBoolean("CanFallThrough", BBE.CanFallThrough); 7061 } 7062 } 7063 } 7064 } 7065 7066 template <class ELFT> void LLVMELFDumper<ELFT>::printAddrsig() { 7067 ListScope L(W, "Addrsig"); 7068 if (!this->DotAddrsigSec) 7069 return; 7070 7071 Expected<std::vector<uint64_t>> SymsOrErr = 7072 decodeAddrsigSection(this->Obj, *this->DotAddrsigSec); 7073 if (!SymsOrErr) { 7074 this->reportUniqueWarning(SymsOrErr.takeError()); 7075 return; 7076 } 7077 7078 for (uint64_t Sym : *SymsOrErr) 7079 W.printNumber("Sym", this->getStaticSymbolName(Sym), Sym); 7080 } 7081 7082 template <typename ELFT> 7083 static bool printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc, 7084 ScopedPrinter &W) { 7085 // Return true if we were able to pretty-print the note, false otherwise. 7086 switch (NoteType) { 7087 default: 7088 return false; 7089 case ELF::NT_GNU_ABI_TAG: { 7090 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 7091 if (!AbiTag.IsValid) { 7092 W.printString("ABI", "<corrupt GNU_ABI_TAG>"); 7093 return false; 7094 } else { 7095 W.printString("OS", AbiTag.OSName); 7096 W.printString("ABI", AbiTag.ABI); 7097 } 7098 break; 7099 } 7100 case ELF::NT_GNU_BUILD_ID: { 7101 W.printString("Build ID", getGNUBuildId(Desc)); 7102 break; 7103 } 7104 case ELF::NT_GNU_GOLD_VERSION: 7105 W.printString("Version", getDescAsStringRef(Desc)); 7106 break; 7107 case ELF::NT_GNU_PROPERTY_TYPE_0: 7108 ListScope D(W, "Property"); 7109 for (const std::string &Property : getGNUPropertyList<ELFT>(Desc)) 7110 W.printString(Property); 7111 break; 7112 } 7113 return true; 7114 } 7115 7116 static bool printAndroidNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc, 7117 ScopedPrinter &W) { 7118 // Return true if we were able to pretty-print the note, false otherwise. 7119 AndroidNoteProperties Props = getAndroidNoteProperties(NoteType, Desc); 7120 if (Props.empty()) 7121 return false; 7122 for (const auto &KV : Props) 7123 W.printString(KV.first, KV.second); 7124 return true; 7125 } 7126 7127 template <typename ELFT> 7128 static bool printLLVMOMPOFFLOADNoteLLVMStyle(uint32_t NoteType, 7129 ArrayRef<uint8_t> Desc, 7130 ScopedPrinter &W) { 7131 switch (NoteType) { 7132 default: 7133 return false; 7134 case ELF::NT_LLVM_OPENMP_OFFLOAD_VERSION: 7135 W.printString("Version", getDescAsStringRef(Desc)); 7136 break; 7137 case ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER: 7138 W.printString("Producer", getDescAsStringRef(Desc)); 7139 break; 7140 case ELF::NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION: 7141 W.printString("Producer version", getDescAsStringRef(Desc)); 7142 break; 7143 } 7144 return true; 7145 } 7146 7147 static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) { 7148 W.printNumber("Page Size", Note.PageSize); 7149 for (const CoreFileMapping &Mapping : Note.Mappings) { 7150 ListScope D(W, "Mapping"); 7151 W.printHex("Start", Mapping.Start); 7152 W.printHex("End", Mapping.End); 7153 W.printHex("Offset", Mapping.Offset); 7154 W.printString("Filename", Mapping.Filename); 7155 } 7156 } 7157 7158 template <class ELFT> void LLVMELFDumper<ELFT>::printNotes() { 7159 ListScope L(W, "Notes"); 7160 7161 std::unique_ptr<DictScope> NoteScope; 7162 auto StartNotes = [&](Optional<StringRef> SecName, 7163 const typename ELFT::Off Offset, 7164 const typename ELFT::Addr Size) { 7165 NoteScope = std::make_unique<DictScope>(W, "NoteSection"); 7166 W.printString("Name", SecName ? *SecName : "<?>"); 7167 W.printHex("Offset", Offset); 7168 W.printHex("Size", Size); 7169 }; 7170 7171 auto EndNotes = [&] { NoteScope.reset(); }; 7172 7173 auto ProcessNote = [&](const Elf_Note &Note, bool IsCore) -> Error { 7174 DictScope D2(W, "Note"); 7175 StringRef Name = Note.getName(); 7176 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 7177 Elf_Word Type = Note.getType(); 7178 7179 // Print the note owner/type. 7180 W.printString("Owner", Name); 7181 W.printHex("Data size", Descriptor.size()); 7182 7183 StringRef NoteType = 7184 getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type); 7185 if (!NoteType.empty()) 7186 W.printString("Type", NoteType); 7187 else 7188 W.printString("Type", 7189 "Unknown (" + to_string(format_hex(Type, 10)) + ")"); 7190 7191 // Print the description, or fallback to printing raw bytes for unknown 7192 // owners/if we fail to pretty-print the contents. 7193 if (Name == "GNU") { 7194 if (printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W)) 7195 return Error::success(); 7196 } else if (Name == "FreeBSD") { 7197 if (Optional<FreeBSDNote> N = 7198 getFreeBSDNote<ELFT>(Type, Descriptor, IsCore)) { 7199 W.printString(N->Type, N->Value); 7200 return Error::success(); 7201 } 7202 } else if (Name == "AMD") { 7203 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 7204 if (!N.Type.empty()) { 7205 W.printString(N.Type, N.Value); 7206 return Error::success(); 7207 } 7208 } else if (Name == "AMDGPU") { 7209 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 7210 if (!N.Type.empty()) { 7211 W.printString(N.Type, N.Value); 7212 return Error::success(); 7213 } 7214 } else if (Name == "LLVMOMPOFFLOAD") { 7215 if (printLLVMOMPOFFLOADNoteLLVMStyle<ELFT>(Type, Descriptor, W)) 7216 return Error::success(); 7217 } else if (Name == "CORE") { 7218 if (Type == ELF::NT_FILE) { 7219 DataExtractor DescExtractor(Descriptor, 7220 ELFT::TargetEndianness == support::little, 7221 sizeof(Elf_Addr)); 7222 if (Expected<CoreNote> N = readCoreNote(DescExtractor)) { 7223 printCoreNoteLLVMStyle(*N, W); 7224 return Error::success(); 7225 } else { 7226 return N.takeError(); 7227 } 7228 } 7229 } else if (Name == "Android") { 7230 if (printAndroidNoteLLVMStyle(Type, Descriptor, W)) 7231 return Error::success(); 7232 } 7233 if (!Descriptor.empty()) { 7234 W.printBinaryBlock("Description data", Descriptor); 7235 } 7236 return Error::success(); 7237 }; 7238 7239 printNotesHelper(*this, StartNotes, ProcessNote, EndNotes); 7240 } 7241 7242 template <class ELFT> void LLVMELFDumper<ELFT>::printELFLinkerOptions() { 7243 ListScope L(W, "LinkerOptions"); 7244 7245 unsigned I = -1; 7246 for (const Elf_Shdr &Shdr : cantFail(this->Obj.sections())) { 7247 ++I; 7248 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) 7249 continue; 7250 7251 Expected<ArrayRef<uint8_t>> ContentsOrErr = 7252 this->Obj.getSectionContents(Shdr); 7253 if (!ContentsOrErr) { 7254 this->reportUniqueWarning("unable to read the content of the " 7255 "SHT_LLVM_LINKER_OPTIONS section: " + 7256 toString(ContentsOrErr.takeError())); 7257 continue; 7258 } 7259 if (ContentsOrErr->empty()) 7260 continue; 7261 7262 if (ContentsOrErr->back() != 0) { 7263 this->reportUniqueWarning("SHT_LLVM_LINKER_OPTIONS section at index " + 7264 Twine(I) + 7265 " is broken: the " 7266 "content is not null-terminated"); 7267 continue; 7268 } 7269 7270 SmallVector<StringRef, 16> Strings; 7271 toStringRef(ContentsOrErr->drop_back()).split(Strings, '\0'); 7272 if (Strings.size() % 2 != 0) { 7273 this->reportUniqueWarning( 7274 "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + 7275 " is broken: an incomplete " 7276 "key-value pair was found. The last possible key was: \"" + 7277 Strings.back() + "\""); 7278 continue; 7279 } 7280 7281 for (size_t I = 0; I < Strings.size(); I += 2) 7282 W.printString(Strings[I], Strings[I + 1]); 7283 } 7284 } 7285 7286 template <class ELFT> void LLVMELFDumper<ELFT>::printDependentLibs() { 7287 ListScope L(W, "DependentLibs"); 7288 this->printDependentLibsHelper( 7289 [](const Elf_Shdr &) {}, 7290 [this](StringRef Lib, uint64_t) { W.printString(Lib); }); 7291 } 7292 7293 template <class ELFT> void LLVMELFDumper<ELFT>::printStackSizes() { 7294 ListScope L(W, "StackSizes"); 7295 if (this->Obj.getHeader().e_type == ELF::ET_REL) 7296 this->printRelocatableStackSizes([]() {}); 7297 else 7298 this->printNonRelocatableStackSizes([]() {}); 7299 } 7300 7301 template <class ELFT> 7302 void LLVMELFDumper<ELFT>::printStackSizeEntry(uint64_t Size, 7303 ArrayRef<std::string> FuncNames) { 7304 DictScope D(W, "Entry"); 7305 W.printList("Functions", FuncNames); 7306 W.printHex("Size", Size); 7307 } 7308 7309 template <class ELFT> 7310 void LLVMELFDumper<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 7311 auto PrintEntry = [&](const Elf_Addr *E) { 7312 W.printHex("Address", Parser.getGotAddress(E)); 7313 W.printNumber("Access", Parser.getGotOffset(E)); 7314 W.printHex("Initial", *E); 7315 }; 7316 7317 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 7318 7319 W.printHex("Canonical gp value", Parser.getGp()); 7320 { 7321 ListScope RS(W, "Reserved entries"); 7322 { 7323 DictScope D(W, "Entry"); 7324 PrintEntry(Parser.getGotLazyResolver()); 7325 W.printString("Purpose", StringRef("Lazy resolver")); 7326 } 7327 7328 if (Parser.getGotModulePointer()) { 7329 DictScope D(W, "Entry"); 7330 PrintEntry(Parser.getGotModulePointer()); 7331 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 7332 } 7333 } 7334 { 7335 ListScope LS(W, "Local entries"); 7336 for (auto &E : Parser.getLocalEntries()) { 7337 DictScope D(W, "Entry"); 7338 PrintEntry(&E); 7339 } 7340 } 7341 7342 if (Parser.IsStatic) 7343 return; 7344 7345 { 7346 ListScope GS(W, "Global entries"); 7347 for (auto &E : Parser.getGlobalEntries()) { 7348 DictScope D(W, "Entry"); 7349 7350 PrintEntry(&E); 7351 7352 const Elf_Sym &Sym = *Parser.getGotSym(&E); 7353 W.printHex("Value", Sym.st_value); 7354 W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes)); 7355 7356 const unsigned SymIndex = &Sym - this->dynamic_symbols().begin(); 7357 DataRegion<Elf_Word> ShndxTable( 7358 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 7359 printSymbolSection(Sym, SymIndex, ShndxTable); 7360 7361 std::string SymName = this->getFullSymbolName( 7362 Sym, SymIndex, ShndxTable, this->DynamicStringTable, true); 7363 W.printNumber("Name", SymName, Sym.st_name); 7364 } 7365 } 7366 7367 W.printNumber("Number of TLS and multi-GOT entries", 7368 uint64_t(Parser.getOtherEntries().size())); 7369 } 7370 7371 template <class ELFT> 7372 void LLVMELFDumper<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 7373 auto PrintEntry = [&](const Elf_Addr *E) { 7374 W.printHex("Address", Parser.getPltAddress(E)); 7375 W.printHex("Initial", *E); 7376 }; 7377 7378 DictScope GS(W, "PLT GOT"); 7379 7380 { 7381 ListScope RS(W, "Reserved entries"); 7382 { 7383 DictScope D(W, "Entry"); 7384 PrintEntry(Parser.getPltLazyResolver()); 7385 W.printString("Purpose", StringRef("PLT lazy resolver")); 7386 } 7387 7388 if (auto E = Parser.getPltModulePointer()) { 7389 DictScope D(W, "Entry"); 7390 PrintEntry(E); 7391 W.printString("Purpose", StringRef("Module pointer")); 7392 } 7393 } 7394 { 7395 ListScope LS(W, "Entries"); 7396 DataRegion<Elf_Word> ShndxTable( 7397 (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end()); 7398 for (auto &E : Parser.getPltEntries()) { 7399 DictScope D(W, "Entry"); 7400 PrintEntry(&E); 7401 7402 const Elf_Sym &Sym = *Parser.getPltSym(&E); 7403 W.printHex("Value", Sym.st_value); 7404 W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes)); 7405 printSymbolSection(Sym, &Sym - this->dynamic_symbols().begin(), 7406 ShndxTable); 7407 7408 const Elf_Sym *FirstSym = cantFail( 7409 this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0)); 7410 std::string SymName = this->getFullSymbolName( 7411 Sym, &Sym - FirstSym, ShndxTable, Parser.getPltStrTable(), true); 7412 W.printNumber("Name", SymName, Sym.st_name); 7413 } 7414 } 7415 } 7416 7417 template <class ELFT> void LLVMELFDumper<ELFT>::printMipsABIFlags() { 7418 const Elf_Mips_ABIFlags<ELFT> *Flags; 7419 if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr = 7420 getMipsAbiFlagsSection(*this)) { 7421 Flags = *SecOrErr; 7422 if (!Flags) { 7423 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 7424 return; 7425 } 7426 } else { 7427 this->reportUniqueWarning(SecOrErr.takeError()); 7428 return; 7429 } 7430 7431 raw_ostream &OS = W.getOStream(); 7432 DictScope GS(W, "MIPS ABI Flags"); 7433 7434 W.printNumber("Version", Flags->version); 7435 W.startLine() << "ISA: "; 7436 if (Flags->isa_rev <= 1) 7437 OS << format("MIPS%u", Flags->isa_level); 7438 else 7439 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 7440 OS << "\n"; 7441 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 7442 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 7443 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 7444 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 7445 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 7446 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 7447 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 7448 W.printHex("Flags 2", Flags->flags2); 7449 } 7450 7451 template <class ELFT> 7452 void JSONELFDumper<ELFT>::printFileSummary(StringRef FileStr, ObjectFile &Obj, 7453 ArrayRef<std::string> InputFilenames, 7454 const Archive *A) { 7455 FileScope = std::make_unique<DictScope>(this->W, FileStr); 7456 DictScope D(this->W, "FileSummary"); 7457 this->W.printString("File", FileStr); 7458 this->W.printString("Format", Obj.getFileFormatName()); 7459 this->W.printString("Arch", Triple::getArchTypeName(Obj.getArch())); 7460 this->W.printString( 7461 "AddressSize", 7462 std::string(formatv("{0}bit", 8 * Obj.getBytesInAddress()))); 7463 this->printLoadName(); 7464 } 7465