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