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