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 "Error.h" 17 #include "ObjDumper.h" 18 #include "StackMapPrinter.h" 19 #include "llvm-readobj.h" 20 #include "llvm/ADT/ArrayRef.h" 21 #include "llvm/ADT/DenseMap.h" 22 #include "llvm/ADT/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/Demangle/Demangle.h" 35 #include "llvm/Object/ELF.h" 36 #include "llvm/Object/ELFObjectFile.h" 37 #include "llvm/Object/ELFTypes.h" 38 #include "llvm/Object/Error.h" 39 #include "llvm/Object/ObjectFile.h" 40 #include "llvm/Object/RelocationResolver.h" 41 #include "llvm/Object/StackMapParser.h" 42 #include "llvm/Support/AMDGPUMetadata.h" 43 #include "llvm/Support/ARMAttributeParser.h" 44 #include "llvm/Support/ARMBuildAttributes.h" 45 #include "llvm/Support/Casting.h" 46 #include "llvm/Support/Compiler.h" 47 #include "llvm/Support/Endian.h" 48 #include "llvm/Support/ErrorHandling.h" 49 #include "llvm/Support/Format.h" 50 #include "llvm/Support/FormatVariadic.h" 51 #include "llvm/Support/FormattedStream.h" 52 #include "llvm/Support/LEB128.h" 53 #include "llvm/Support/MathExtras.h" 54 #include "llvm/Support/MipsABIFlags.h" 55 #include "llvm/Support/RISCVAttributeParser.h" 56 #include "llvm/Support/RISCVAttributes.h" 57 #include "llvm/Support/ScopedPrinter.h" 58 #include "llvm/Support/raw_ostream.h" 59 #include <algorithm> 60 #include <cinttypes> 61 #include <cstddef> 62 #include <cstdint> 63 #include <cstdlib> 64 #include <iterator> 65 #include <memory> 66 #include <string> 67 #include <system_error> 68 #include <unordered_set> 69 #include <vector> 70 71 using namespace llvm; 72 using namespace llvm::object; 73 using namespace ELF; 74 75 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 76 case ns::enum: \ 77 return #enum; 78 79 #define ENUM_ENT(enum, altName) \ 80 { #enum, altName, ELF::enum } 81 82 #define ENUM_ENT_1(enum) \ 83 { #enum, #enum, ELF::enum } 84 85 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 86 case ns::enum: \ 87 return std::string(#enum).substr(3); 88 89 #define TYPEDEF_ELF_TYPES(ELFT) \ 90 using ELFO = ELFFile<ELFT>; \ 91 using Elf_Addr = typename ELFT::Addr; \ 92 using Elf_Shdr = typename ELFT::Shdr; \ 93 using Elf_Sym = typename ELFT::Sym; \ 94 using Elf_Dyn = typename ELFT::Dyn; \ 95 using Elf_Dyn_Range = typename ELFT::DynRange; \ 96 using Elf_Rel = typename ELFT::Rel; \ 97 using Elf_Rela = typename ELFT::Rela; \ 98 using Elf_Relr = typename ELFT::Relr; \ 99 using Elf_Rel_Range = typename ELFT::RelRange; \ 100 using Elf_Rela_Range = typename ELFT::RelaRange; \ 101 using Elf_Relr_Range = typename ELFT::RelrRange; \ 102 using Elf_Phdr = typename ELFT::Phdr; \ 103 using Elf_Half = typename ELFT::Half; \ 104 using Elf_Ehdr = typename ELFT::Ehdr; \ 105 using Elf_Word = typename ELFT::Word; \ 106 using Elf_Hash = typename ELFT::Hash; \ 107 using Elf_GnuHash = typename ELFT::GnuHash; \ 108 using Elf_Note = typename ELFT::Note; \ 109 using Elf_Sym_Range = typename ELFT::SymRange; \ 110 using Elf_Versym = typename ELFT::Versym; \ 111 using Elf_Verneed = typename ELFT::Verneed; \ 112 using Elf_Vernaux = typename ELFT::Vernaux; \ 113 using Elf_Verdef = typename ELFT::Verdef; \ 114 using Elf_Verdaux = typename ELFT::Verdaux; \ 115 using Elf_CGProfile = typename ELFT::CGProfile; \ 116 using uintX_t = typename ELFT::uint; 117 118 namespace { 119 120 template <class ELFT> class DumpStyle; 121 122 /// Represents a contiguous uniform range in the file. We cannot just create a 123 /// range directly because when creating one of these from the .dynamic table 124 /// the size, entity size and virtual address are different entries in arbitrary 125 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 126 struct DynRegionInfo { 127 DynRegionInfo(StringRef ObjName) : FileName(ObjName) {} 128 DynRegionInfo(const void *A, uint64_t S, uint64_t ES, StringRef ObjName) 129 : Addr(A), Size(S), EntSize(ES), FileName(ObjName) {} 130 131 /// Address in current address space. 132 const void *Addr = nullptr; 133 /// Size in bytes of the region. 134 uint64_t Size = 0; 135 /// Size of each entity in the region. 136 uint64_t EntSize = 0; 137 138 /// Name of the file. Used for error reporting. 139 StringRef FileName; 140 /// Error prefix. Used for error reporting to provide more information. 141 std::string Context; 142 /// Region size name. Used for error reporting. 143 StringRef SizePrintName = "size"; 144 /// Entry size name. Used for error reporting. If this field is empty, errors 145 /// will not mention the entry size. 146 StringRef EntSizePrintName = "entry size"; 147 148 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 149 const Type *Start = reinterpret_cast<const Type *>(Addr); 150 if (!Start) 151 return {Start, Start}; 152 if (EntSize == sizeof(Type) && (Size % EntSize == 0)) 153 return {Start, Start + (Size / EntSize)}; 154 155 std::string Msg; 156 if (!Context.empty()) 157 Msg += Context + " has "; 158 159 Msg += ("invalid " + SizePrintName + " (0x" + Twine::utohexstr(Size) + ")") 160 .str(); 161 if (!EntSizePrintName.empty()) 162 Msg += 163 (" or " + EntSizePrintName + " (0x" + Twine::utohexstr(EntSize) + ")") 164 .str(); 165 166 reportWarning(createError(Msg.c_str()), FileName); 167 return {Start, Start}; 168 } 169 }; 170 171 namespace { 172 struct VerdAux { 173 unsigned Offset; 174 std::string Name; 175 }; 176 177 struct VerDef { 178 unsigned Offset; 179 unsigned Version; 180 unsigned Flags; 181 unsigned Ndx; 182 unsigned Cnt; 183 unsigned Hash; 184 std::string Name; 185 std::vector<VerdAux> AuxV; 186 }; 187 188 struct VernAux { 189 unsigned Hash; 190 unsigned Flags; 191 unsigned Other; 192 unsigned Offset; 193 std::string Name; 194 }; 195 196 struct VerNeed { 197 unsigned Version; 198 unsigned Cnt; 199 unsigned Offset; 200 std::string File; 201 std::vector<VernAux> AuxV; 202 }; 203 204 } // namespace 205 206 template <typename ELFT> class ELFDumper : public ObjDumper { 207 public: 208 ELFDumper(const object::ELFObjectFile<ELFT> *ObjF, ScopedPrinter &Writer); 209 210 void printFileHeaders() override; 211 void printSectionHeaders() override; 212 void printRelocations() override; 213 void printDependentLibs() override; 214 void printDynamicRelocations() override; 215 void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override; 216 void printHashSymbols() override; 217 void printUnwindInfo() override; 218 219 void printDynamicTable() override; 220 void printNeededLibraries() override; 221 void printProgramHeaders(bool PrintProgramHeaders, 222 cl::boolOrDefault PrintSectionMapping) override; 223 void printHashTable() override; 224 void printGnuHashTable(const object::ObjectFile *Obj) override; 225 void printLoadName() override; 226 void printVersionInfo() override; 227 void printGroupSections() override; 228 229 void printArchSpecificInfo() override; 230 231 void printStackMap() const override; 232 233 void printHashHistograms() override; 234 235 void printCGProfile() override; 236 void printAddrsig() override; 237 238 void printNotes() override; 239 240 void printELFLinkerOptions() override; 241 void printStackSizes() override; 242 243 const object::ELFObjectFile<ELFT> *getElfObject() const { return ObjF; }; 244 245 private: 246 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 247 248 TYPEDEF_ELF_TYPES(ELFT) 249 250 DynRegionInfo checkDRI(DynRegionInfo DRI) { 251 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 252 if (DRI.Addr < Obj->base() || 253 reinterpret_cast<const uint8_t *>(DRI.Addr) + DRI.Size > 254 Obj->base() + Obj->getBufSize()) 255 reportError(errorCodeToError(llvm::object::object_error::parse_failed), 256 ObjF->getFileName()); 257 return DRI; 258 } 259 260 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 261 return checkDRI({ObjF->getELFFile()->base() + P->p_offset, P->p_filesz, 262 EntSize, ObjF->getFileName()}); 263 } 264 265 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 266 return checkDRI({ObjF->getELFFile()->base() + S->sh_offset, S->sh_size, 267 S->sh_entsize, ObjF->getFileName()}); 268 } 269 270 void printAttributes(); 271 void printMipsReginfo(); 272 void printMipsOptions(); 273 274 std::pair<const Elf_Phdr *, const Elf_Shdr *> 275 findDynamic(const ELFFile<ELFT> *Obj); 276 void loadDynamicTable(const ELFFile<ELFT> *Obj); 277 void parseDynamicTable(const ELFFile<ELFT> *Obj); 278 279 Expected<StringRef> getSymbolVersion(const Elf_Sym *symb, 280 bool &IsDefault) const; 281 Error LoadVersionMap() const; 282 283 const object::ELFObjectFile<ELFT> *ObjF; 284 DynRegionInfo DynRelRegion; 285 DynRegionInfo DynRelaRegion; 286 DynRegionInfo DynRelrRegion; 287 DynRegionInfo DynPLTRelRegion; 288 Optional<DynRegionInfo> DynSymRegion; 289 DynRegionInfo DynamicTable; 290 StringRef DynamicStringTable; 291 StringRef SOName = "<Not found>"; 292 const Elf_Hash *HashTable = nullptr; 293 const Elf_GnuHash *GnuHashTable = nullptr; 294 const Elf_Shdr *DotSymtabSec = nullptr; 295 const Elf_Shdr *DotCGProfileSec = nullptr; 296 const Elf_Shdr *DotAddrsigSec = nullptr; 297 StringRef DynSymtabName; 298 ArrayRef<Elf_Word> ShndxTable; 299 300 const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version 301 const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r 302 const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d 303 304 struct VersionEntry { 305 std::string Name; 306 bool IsVerDef; 307 }; 308 mutable SmallVector<Optional<VersionEntry>, 16> VersionMap; 309 310 std::unordered_set<std::string> Warnings; 311 312 public: 313 Elf_Dyn_Range dynamic_table() const { 314 // A valid .dynamic section contains an array of entries terminated 315 // with a DT_NULL entry. However, sometimes the section content may 316 // continue past the DT_NULL entry, so to dump the section correctly, 317 // we first find the end of the entries by iterating over them. 318 Elf_Dyn_Range Table = DynamicTable.getAsArrayRef<Elf_Dyn>(); 319 320 size_t Size = 0; 321 while (Size < Table.size()) 322 if (Table[Size++].getTag() == DT_NULL) 323 break; 324 325 return Table.slice(0, Size); 326 } 327 328 Optional<DynRegionInfo> getDynSymRegion() const { return DynSymRegion; } 329 330 Elf_Sym_Range dynamic_symbols() const { 331 if (!DynSymRegion) 332 return Elf_Sym_Range(); 333 return DynSymRegion->getAsArrayRef<Elf_Sym>(); 334 } 335 336 Elf_Rel_Range dyn_rels() const; 337 Elf_Rela_Range dyn_relas() const; 338 Elf_Relr_Range dyn_relrs() const; 339 std::string getFullSymbolName(const Elf_Sym *Symbol, 340 Optional<StringRef> StrTable, 341 bool IsDynamic) const; 342 Expected<unsigned> getSymbolSectionIndex(const Elf_Sym *Symbol, 343 const Elf_Sym *FirstSym) const; 344 Expected<StringRef> getSymbolSectionName(const Elf_Sym *Symbol, 345 unsigned SectionIndex) const; 346 std::string getStaticSymbolName(uint32_t Index) const; 347 StringRef getDynamicString(uint64_t Value) const; 348 Expected<StringRef> getSymbolVersionByIndex(uint32_t VersionSymbolIndex, 349 bool &IsDefault) const; 350 351 void printSymbolsHelper(bool IsDynamic) const; 352 std::string getDynamicEntry(uint64_t Type, uint64_t Value) const; 353 354 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 355 const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; } 356 const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; } 357 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 358 StringRef getDynamicStringTable() const { return DynamicStringTable; } 359 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 360 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 361 const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; } 362 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 363 const DynRegionInfo &getDynamicTableRegion() const { return DynamicTable; } 364 const Elf_Hash *getHashTable() const { return HashTable; } 365 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 366 367 Expected<ArrayRef<Elf_Versym>> getVersionTable(const Elf_Shdr *Sec, 368 ArrayRef<Elf_Sym> *SymTab, 369 StringRef *StrTab) const; 370 Expected<std::vector<VerDef>> 371 getVersionDefinitions(const Elf_Shdr *Sec) const; 372 Expected<std::vector<VerNeed>> 373 getVersionDependencies(const Elf_Shdr *Sec) const; 374 375 Expected<std::pair<const Elf_Sym *, std::string>> 376 getRelocationTarget(const Elf_Shdr *SymTab, const Elf_Rela &R) const; 377 378 std::function<Error(const Twine &Msg)> WarningHandler; 379 void reportUniqueWarning(Error Err) const; 380 }; 381 382 template <class ELFT> 383 static Expected<StringRef> getLinkAsStrtab(const ELFFile<ELFT> *Obj, 384 const typename ELFT::Shdr *Sec, 385 unsigned SecNdx) { 386 Expected<const typename ELFT::Shdr *> StrTabSecOrErr = 387 Obj->getSection(Sec->sh_link); 388 if (!StrTabSecOrErr) 389 return createError("invalid section linked to " + 390 object::getELFSectionTypeName( 391 Obj->getHeader()->e_machine, Sec->sh_type) + 392 " section with index " + Twine(SecNdx) + ": " + 393 toString(StrTabSecOrErr.takeError())); 394 395 Expected<StringRef> StrTabOrErr = Obj->getStringTable(*StrTabSecOrErr); 396 if (!StrTabOrErr) 397 return createError("invalid string table linked to " + 398 object::getELFSectionTypeName( 399 Obj->getHeader()->e_machine, Sec->sh_type) + 400 " section with index " + Twine(SecNdx) + ": " + 401 toString(StrTabOrErr.takeError())); 402 return *StrTabOrErr; 403 } 404 405 // Returns the linked symbol table and associated string table for a given section. 406 template <class ELFT> 407 static Expected<std::pair<typename ELFT::SymRange, StringRef>> 408 getLinkAsSymtab(const ELFFile<ELFT> *Obj, const typename ELFT::Shdr *Sec, 409 unsigned SecNdx, unsigned ExpectedType) { 410 Expected<const typename ELFT::Shdr *> SymtabOrErr = 411 Obj->getSection(Sec->sh_link); 412 if (!SymtabOrErr) 413 return createError("invalid section linked to " + 414 object::getELFSectionTypeName( 415 Obj->getHeader()->e_machine, Sec->sh_type) + 416 " section with index " + Twine(SecNdx) + ": " + 417 toString(SymtabOrErr.takeError())); 418 419 if ((*SymtabOrErr)->sh_type != ExpectedType) 420 return createError( 421 "invalid section linked to " + 422 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 423 Sec->sh_type) + 424 " section with index " + Twine(SecNdx) + ": expected " + 425 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 426 ExpectedType) + 427 ", but got " + 428 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 429 (*SymtabOrErr)->sh_type)); 430 431 Expected<StringRef> StrTabOrErr = 432 getLinkAsStrtab(Obj, *SymtabOrErr, Sec->sh_link); 433 if (!StrTabOrErr) 434 return createError( 435 "can't get a string table for the symbol table linked to " + 436 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 437 Sec->sh_type) + 438 " section with index " + Twine(SecNdx) + ": " + 439 toString(StrTabOrErr.takeError())); 440 441 Expected<typename ELFT::SymRange> SymsOrErr = Obj->symbols(*SymtabOrErr); 442 if (!SymsOrErr) 443 return createError( 444 "unable to read symbols from the symbol table with index " + 445 Twine(Sec->sh_link) + ": " + toString(SymsOrErr.takeError())); 446 447 return std::make_pair(*SymsOrErr, *StrTabOrErr); 448 } 449 450 template <class ELFT> 451 Expected<ArrayRef<typename ELFT::Versym>> 452 ELFDumper<ELFT>::getVersionTable(const Elf_Shdr *Sec, ArrayRef<Elf_Sym> *SymTab, 453 StringRef *StrTab) const { 454 assert((!SymTab && !StrTab) || (SymTab && StrTab)); 455 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 456 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 457 458 if (uintptr_t(Obj->base() + Sec->sh_offset) % sizeof(uint16_t) != 0) 459 return createError("the SHT_GNU_versym section with index " + 460 Twine(SecNdx) + " is misaligned"); 461 462 Expected<ArrayRef<Elf_Versym>> VersionsOrErr = 463 Obj->template getSectionContentsAsArray<Elf_Versym>(Sec); 464 if (!VersionsOrErr) 465 return createError( 466 "cannot read content of SHT_GNU_versym section with index " + 467 Twine(SecNdx) + ": " + toString(VersionsOrErr.takeError())); 468 469 Expected<std::pair<ArrayRef<Elf_Sym>, StringRef>> SymTabOrErr = 470 getLinkAsSymtab(Obj, Sec, SecNdx, SHT_DYNSYM); 471 if (!SymTabOrErr) { 472 reportUniqueWarning(SymTabOrErr.takeError()); 473 return *VersionsOrErr; 474 } 475 476 if (SymTabOrErr->first.size() != VersionsOrErr->size()) 477 reportUniqueWarning( 478 createError("SHT_GNU_versym section with index " + Twine(SecNdx) + 479 ": the number of entries (" + Twine(VersionsOrErr->size()) + 480 ") does not match the number of symbols (" + 481 Twine(SymTabOrErr->first.size()) + 482 ") in the symbol table with index " + Twine(Sec->sh_link))); 483 484 if (SymTab) 485 std::tie(*SymTab, *StrTab) = *SymTabOrErr; 486 return *VersionsOrErr; 487 } 488 489 template <class ELFT> 490 Expected<std::vector<VerDef>> 491 ELFDumper<ELFT>::getVersionDefinitions(const Elf_Shdr *Sec) const { 492 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 493 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 494 495 Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec, SecNdx); 496 if (!StrTabOrErr) 497 return StrTabOrErr.takeError(); 498 499 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(Sec); 500 if (!ContentsOrErr) 501 return createError( 502 "cannot read content of SHT_GNU_verdef section with index " + 503 Twine(SecNdx) + ": " + toString(ContentsOrErr.takeError())); 504 505 const uint8_t *Start = ContentsOrErr->data(); 506 const uint8_t *End = Start + ContentsOrErr->size(); 507 508 auto ExtractNextAux = [&](const uint8_t *&VerdauxBuf, 509 unsigned VerDefNdx) -> Expected<VerdAux> { 510 if (VerdauxBuf + sizeof(Elf_Verdaux) > End) 511 return createError("invalid SHT_GNU_verdef section with index " + 512 Twine(SecNdx) + ": version definition " + 513 Twine(VerDefNdx) + 514 " refers to an auxiliary entry that goes past the end " 515 "of the section"); 516 517 auto *Verdaux = reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf); 518 VerdauxBuf += Verdaux->vda_next; 519 520 VerdAux Aux; 521 Aux.Offset = VerdauxBuf - Start; 522 if (Verdaux->vda_name <= StrTabOrErr->size()) 523 Aux.Name = std::string(StrTabOrErr->drop_front(Verdaux->vda_name)); 524 else 525 Aux.Name = "<invalid vda_name: " + to_string(Verdaux->vda_name) + ">"; 526 return Aux; 527 }; 528 529 std::vector<VerDef> Ret; 530 const uint8_t *VerdefBuf = Start; 531 for (unsigned I = 1; I <= /*VerDefsNum=*/Sec->sh_info; ++I) { 532 if (VerdefBuf + sizeof(Elf_Verdef) > End) 533 return createError("invalid SHT_GNU_verdef section with index " + 534 Twine(SecNdx) + ": version definition " + Twine(I) + 535 " goes past the end of the section"); 536 537 if (uintptr_t(VerdefBuf) % sizeof(uint32_t) != 0) 538 return createError( 539 "invalid SHT_GNU_verdef section with index " + Twine(SecNdx) + 540 ": found a misaligned version definition entry at offset 0x" + 541 Twine::utohexstr(VerdefBuf - Start)); 542 543 unsigned Version = *reinterpret_cast<const Elf_Half *>(VerdefBuf); 544 if (Version != 1) 545 return createError("unable to dump SHT_GNU_verdef section with index " + 546 Twine(SecNdx) + ": version " + Twine(Version) + 547 " is not yet supported"); 548 549 const Elf_Verdef *D = reinterpret_cast<const Elf_Verdef *>(VerdefBuf); 550 VerDef &VD = *Ret.emplace(Ret.end()); 551 VD.Offset = VerdefBuf - Start; 552 VD.Version = D->vd_version; 553 VD.Flags = D->vd_flags; 554 VD.Ndx = D->vd_ndx; 555 VD.Cnt = D->vd_cnt; 556 VD.Hash = D->vd_hash; 557 558 const uint8_t *VerdauxBuf = VerdefBuf + D->vd_aux; 559 for (unsigned J = 0; J < D->vd_cnt; ++J) { 560 if (uintptr_t(VerdauxBuf) % sizeof(uint32_t) != 0) 561 return createError("invalid SHT_GNU_verdef section with index " + 562 Twine(SecNdx) + 563 ": found a misaligned auxiliary entry at offset 0x" + 564 Twine::utohexstr(VerdauxBuf - Start)); 565 566 Expected<VerdAux> AuxOrErr = ExtractNextAux(VerdauxBuf, I); 567 if (!AuxOrErr) 568 return AuxOrErr.takeError(); 569 570 if (J == 0) 571 VD.Name = AuxOrErr->Name; 572 else 573 VD.AuxV.push_back(*AuxOrErr); 574 } 575 576 VerdefBuf += D->vd_next; 577 } 578 579 return Ret; 580 } 581 582 template <class ELFT> 583 Expected<std::vector<VerNeed>> 584 ELFDumper<ELFT>::getVersionDependencies(const Elf_Shdr *Sec) const { 585 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 586 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 587 588 StringRef StrTab; 589 Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec, SecNdx); 590 if (!StrTabOrErr) 591 reportUniqueWarning(StrTabOrErr.takeError()); 592 else 593 StrTab = *StrTabOrErr; 594 595 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(Sec); 596 if (!ContentsOrErr) 597 return createError( 598 "cannot read content of SHT_GNU_verneed section with index " + 599 Twine(SecNdx) + ": " + toString(ContentsOrErr.takeError())); 600 601 const uint8_t *Start = ContentsOrErr->data(); 602 const uint8_t *End = Start + ContentsOrErr->size(); 603 const uint8_t *VerneedBuf = Start; 604 605 std::vector<VerNeed> Ret; 606 for (unsigned I = 1; I <= /*VerneedNum=*/Sec->sh_info; ++I) { 607 if (VerneedBuf + sizeof(Elf_Verdef) > End) 608 return createError("invalid SHT_GNU_verneed section with index " + 609 Twine(SecNdx) + ": version dependency " + Twine(I) + 610 " goes past the end of the section"); 611 612 if (uintptr_t(VerneedBuf) % sizeof(uint32_t) != 0) 613 return createError( 614 "invalid SHT_GNU_verneed section with index " + Twine(SecNdx) + 615 ": found a misaligned version dependency entry at offset 0x" + 616 Twine::utohexstr(VerneedBuf - Start)); 617 618 unsigned Version = *reinterpret_cast<const Elf_Half *>(VerneedBuf); 619 if (Version != 1) 620 return createError("unable to dump SHT_GNU_verneed section with index " + 621 Twine(SecNdx) + ": version " + Twine(Version) + 622 " is not yet supported"); 623 624 const Elf_Verneed *Verneed = 625 reinterpret_cast<const Elf_Verneed *>(VerneedBuf); 626 627 VerNeed &VN = *Ret.emplace(Ret.end()); 628 VN.Version = Verneed->vn_version; 629 VN.Cnt = Verneed->vn_cnt; 630 VN.Offset = VerneedBuf - Start; 631 632 if (Verneed->vn_file < StrTab.size()) 633 VN.File = std::string(StrTab.drop_front(Verneed->vn_file)); 634 else 635 VN.File = "<corrupt vn_file: " + to_string(Verneed->vn_file) + ">"; 636 637 const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux; 638 for (unsigned J = 0; J < Verneed->vn_cnt; ++J) { 639 if (uintptr_t(VernauxBuf) % sizeof(uint32_t) != 0) 640 return createError("invalid SHT_GNU_verneed section with index " + 641 Twine(SecNdx) + 642 ": found a misaligned auxiliary entry at offset 0x" + 643 Twine::utohexstr(VernauxBuf - Start)); 644 645 if (VernauxBuf + sizeof(Elf_Vernaux) > End) 646 return createError( 647 "invalid SHT_GNU_verneed section with index " + Twine(SecNdx) + 648 ": version dependency " + Twine(I) + 649 " refers to an auxiliary entry that goes past the end " 650 "of the section"); 651 652 const Elf_Vernaux *Vernaux = 653 reinterpret_cast<const Elf_Vernaux *>(VernauxBuf); 654 655 VernAux &Aux = *VN.AuxV.emplace(VN.AuxV.end()); 656 Aux.Hash = Vernaux->vna_hash; 657 Aux.Flags = Vernaux->vna_flags; 658 Aux.Other = Vernaux->vna_other; 659 Aux.Offset = VernauxBuf - Start; 660 if (StrTab.size() <= Vernaux->vna_name) 661 Aux.Name = "<corrupt>"; 662 else 663 Aux.Name = std::string(StrTab.drop_front(Vernaux->vna_name)); 664 665 VernauxBuf += Vernaux->vna_next; 666 } 667 VerneedBuf += Verneed->vn_next; 668 } 669 return Ret; 670 } 671 672 template <class ELFT> 673 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 674 Optional<StringRef> StrTable; 675 StringRef SymtabName; 676 size_t Entries = 0; 677 Elf_Sym_Range Syms(nullptr, nullptr); 678 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 679 if (IsDynamic) { 680 StrTable = DynamicStringTable; 681 Syms = dynamic_symbols(); 682 SymtabName = DynSymtabName; 683 Entries = Syms.size(); 684 } else { 685 if (!DotSymtabSec) 686 return; 687 688 if (Expected<StringRef> StrTableOrErr = 689 Obj->getStringTableForSymtab(*DotSymtabSec)) 690 StrTable = *StrTableOrErr; 691 else 692 reportUniqueWarning(createError( 693 "unable to get the string table for the SHT_SYMTAB section: " + 694 toString(StrTableOrErr.takeError()))); 695 696 if (Expected<Elf_Sym_Range> SymsOrErr = Obj->symbols(DotSymtabSec)) 697 Syms = *SymsOrErr; 698 else 699 reportUniqueWarning( 700 createError("unable to read symbols from the SHT_SYMTAB section: " + 701 toString(SymsOrErr.takeError()))); 702 703 if (Expected<StringRef> SymtabNameOrErr = 704 Obj->getSectionName(DotSymtabSec)) { 705 SymtabName = *SymtabNameOrErr; 706 } else { 707 reportUniqueWarning( 708 createError("unable to get the name of the SHT_SYMTAB section: " + 709 toString(SymtabNameOrErr.takeError()))); 710 SymtabName = "<?>"; 711 } 712 713 Entries = DotSymtabSec->getEntityCount(); 714 } 715 if (Syms.begin() == Syms.end()) 716 return; 717 718 // The st_other field has 2 logical parts. The first two bits hold the symbol 719 // visibility (STV_*) and the remainder hold other platform-specific values. 720 bool NonVisibilityBitsUsed = llvm::find_if(Syms, [](const Elf_Sym &S) { 721 return S.st_other & ~0x3; 722 }) != Syms.end(); 723 724 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries, 725 NonVisibilityBitsUsed); 726 for (const auto &Sym : Syms) 727 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic, 728 NonVisibilityBitsUsed); 729 } 730 731 template <class ELFT> class MipsGOTParser; 732 733 template <typename ELFT> class DumpStyle { 734 public: 735 using Elf_Shdr = typename ELFT::Shdr; 736 using Elf_Sym = typename ELFT::Sym; 737 using Elf_Addr = typename ELFT::Addr; 738 739 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) { 740 FileName = this->Dumper->getElfObject()->getFileName(); 741 } 742 743 virtual ~DumpStyle() = default; 744 745 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 746 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 747 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 748 virtual void printSectionHeaders(const ELFFile<ELFT> *Obj) = 0; 749 virtual void printSymbols(const ELFFile<ELFT> *Obj, bool PrintSymbols, 750 bool PrintDynamicSymbols) = 0; 751 virtual void printHashSymbols(const ELFFile<ELFT> *Obj) {} 752 virtual void printDependentLibs(const ELFFile<ELFT> *Obj) = 0; 753 virtual void printDynamic(const ELFFile<ELFT> *Obj) {} 754 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 755 virtual void printSymtabMessage(const ELFFile<ELFT> *Obj, StringRef Name, 756 size_t Offset, bool NonVisibilityBitsUsed) {} 757 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 758 const Elf_Sym *FirstSym, 759 Optional<StringRef> StrTable, bool IsDynamic, 760 bool NonVisibilityBitsUsed) = 0; 761 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj, 762 bool PrintProgramHeaders, 763 cl::boolOrDefault PrintSectionMapping) = 0; 764 virtual void printVersionSymbolSection(const ELFFile<ELFT> *Obj, 765 const Elf_Shdr *Sec) = 0; 766 virtual void printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 767 const Elf_Shdr *Sec) = 0; 768 virtual void printVersionDependencySection(const ELFFile<ELFT> *Obj, 769 const Elf_Shdr *Sec) = 0; 770 virtual void printHashHistograms(const ELFFile<ELFT> *Obj) = 0; 771 virtual void printCGProfile(const ELFFile<ELFT> *Obj) = 0; 772 virtual void printAddrsig(const ELFFile<ELFT> *Obj) = 0; 773 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0; 774 virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0; 775 virtual void printStackSizes(const ELFObjectFile<ELFT> *Obj) = 0; 776 void printNonRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj, 777 std::function<void()> PrintHeader); 778 void printRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj, 779 std::function<void()> PrintHeader); 780 void printFunctionStackSize(const ELFObjectFile<ELFT> *Obj, uint64_t SymValue, 781 Optional<SectionRef> FunctionSec, 782 const StringRef SectionName, DataExtractor Data, 783 uint64_t *Offset); 784 void printStackSize(const ELFObjectFile<ELFT> *Obj, RelocationRef Rel, 785 SectionRef FunctionSec, 786 const StringRef &StackSizeSectionName, 787 const RelocationResolver &Resolver, DataExtractor Data); 788 virtual void printStackSizeEntry(uint64_t Size, StringRef FuncName) = 0; 789 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; 790 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; 791 virtual void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) = 0; 792 const ELFDumper<ELFT> *dumper() const { return Dumper; } 793 794 protected: 795 void printDependentLibsHelper( 796 const ELFFile<ELFT> *Obj, 797 function_ref<void(const Elf_Shdr &)> OnSectionStart, 798 function_ref<void(StringRef, uint64_t)> OnSectionEntry); 799 800 void reportUniqueWarning(Error Err) const; 801 StringRef FileName; 802 803 private: 804 const ELFDumper<ELFT> *Dumper; 805 }; 806 807 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 808 formatted_raw_ostream &OS; 809 810 public: 811 TYPEDEF_ELF_TYPES(ELFT) 812 813 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 814 : DumpStyle<ELFT>(Dumper), 815 OS(static_cast<formatted_raw_ostream&>(W.getOStream())) { 816 assert (&W.getOStream() == &llvm::fouts()); 817 } 818 819 void printFileHeaders(const ELFO *Obj) override; 820 void printGroupSections(const ELFFile<ELFT> *Obj) override; 821 void printRelocations(const ELFO *Obj) override; 822 void printSectionHeaders(const ELFO *Obj) override; 823 void printSymbols(const ELFO *Obj, bool PrintSymbols, 824 bool PrintDynamicSymbols) override; 825 void printHashSymbols(const ELFO *Obj) override; 826 void printDependentLibs(const ELFFile<ELFT> *Obj) override; 827 void printDynamic(const ELFFile<ELFT> *Obj) override; 828 void printDynamicRelocations(const ELFO *Obj) override; 829 void printSymtabMessage(const ELFO *Obj, StringRef Name, size_t Offset, 830 bool NonVisibilityBitsUsed) override; 831 void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders, 832 cl::boolOrDefault PrintSectionMapping) override; 833 void printVersionSymbolSection(const ELFFile<ELFT> *Obj, 834 const Elf_Shdr *Sec) override; 835 void printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 836 const Elf_Shdr *Sec) override; 837 void printVersionDependencySection(const ELFFile<ELFT> *Obj, 838 const Elf_Shdr *Sec) override; 839 void printHashHistograms(const ELFFile<ELFT> *Obj) override; 840 void printCGProfile(const ELFFile<ELFT> *Obj) override; 841 void printAddrsig(const ELFFile<ELFT> *Obj) override; 842 void printNotes(const ELFFile<ELFT> *Obj) override; 843 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 844 void printStackSizes(const ELFObjectFile<ELFT> *Obj) override; 845 void printStackSizeEntry(uint64_t Size, StringRef FuncName) override; 846 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 847 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 848 void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) override; 849 850 private: 851 void printHashHistogram(const Elf_Hash &HashTable); 852 void printGnuHashHistogram(const Elf_GnuHash &GnuHashTable); 853 854 void printHashTableSymbols(const ELFO *Obj, const Elf_Hash &HashTable); 855 void printGnuHashTableSymbols(const ELFO *Obj, 856 const Elf_GnuHash &GnuHashTable); 857 858 struct Field { 859 std::string Str; 860 unsigned Column; 861 862 Field(StringRef S, unsigned Col) : Str(std::string(S)), Column(Col) {} 863 Field(unsigned Col) : Column(Col) {} 864 }; 865 866 template <typename T, typename TEnum> 867 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 868 for (const auto &EnumItem : EnumValues) 869 if (EnumItem.Value == Value) 870 return std::string(EnumItem.AltName); 871 return to_hexString(Value, false); 872 } 873 874 template <typename T, typename TEnum> 875 std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues, 876 TEnum EnumMask1 = {}, TEnum EnumMask2 = {}, 877 TEnum EnumMask3 = {}) { 878 std::string Str; 879 for (const auto &Flag : EnumValues) { 880 if (Flag.Value == 0) 881 continue; 882 883 TEnum EnumMask{}; 884 if (Flag.Value & EnumMask1) 885 EnumMask = EnumMask1; 886 else if (Flag.Value & EnumMask2) 887 EnumMask = EnumMask2; 888 else if (Flag.Value & EnumMask3) 889 EnumMask = EnumMask3; 890 bool IsEnum = (Flag.Value & EnumMask) != 0; 891 if ((!IsEnum && (Value & Flag.Value) == Flag.Value) || 892 (IsEnum && (Value & EnumMask) == Flag.Value)) { 893 if (!Str.empty()) 894 Str += ", "; 895 Str += Flag.AltName; 896 } 897 } 898 return Str; 899 } 900 901 formatted_raw_ostream &printField(struct Field F) { 902 if (F.Column != 0) 903 OS.PadToColumn(F.Column); 904 OS << F.Str; 905 OS.flush(); 906 return OS; 907 } 908 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym, 909 StringRef StrTable, uint32_t Bucket); 910 void printRelocHeader(unsigned SType); 911 void printRelocation(const ELFO *Obj, unsigned SecIndex, 912 const Elf_Shdr *SymTab, const Elf_Rela &R, 913 unsigned RelIndex, bool IsRela); 914 void printRelocation(const ELFO *Obj, const Elf_Sym *Sym, 915 StringRef SymbolName, const Elf_Rela &R, bool IsRela); 916 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 917 Optional<StringRef> StrTable, bool IsDynamic, 918 bool NonVisibilityBitsUsed) override; 919 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 920 const Elf_Sym *FirstSym); 921 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 922 void printProgramHeaders(const ELFO *Obj); 923 void printSectionMapping(const ELFO *Obj); 924 void printGNUVersionSectionProlog(const ELFFile<ELFT> *Obj, 925 const typename ELFT::Shdr *Sec, 926 const Twine &Label, unsigned EntriesNum); 927 }; 928 929 template <class ELFT> 930 void ELFDumper<ELFT>::reportUniqueWarning(Error Err) const { 931 handleAllErrors(std::move(Err), [&](const ErrorInfoBase &EI) { 932 cantFail(WarningHandler(EI.message()), 933 "WarningHandler should always return ErrorSuccess"); 934 }); 935 } 936 937 template <class ELFT> 938 void DumpStyle<ELFT>::reportUniqueWarning(Error Err) const { 939 this->dumper()->reportUniqueWarning(std::move(Err)); 940 } 941 942 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 943 public: 944 TYPEDEF_ELF_TYPES(ELFT) 945 946 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 947 : DumpStyle<ELFT>(Dumper), W(W) {} 948 949 void printFileHeaders(const ELFO *Obj) override; 950 void printGroupSections(const ELFFile<ELFT> *Obj) override; 951 void printRelocations(const ELFO *Obj) override; 952 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 953 void printSectionHeaders(const ELFO *Obj) override; 954 void printSymbols(const ELFO *Obj, bool PrintSymbols, 955 bool PrintDynamicSymbols) override; 956 void printDependentLibs(const ELFFile<ELFT> *Obj) override; 957 void printDynamic(const ELFFile<ELFT> *Obj) override; 958 void printDynamicRelocations(const ELFO *Obj) override; 959 void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders, 960 cl::boolOrDefault PrintSectionMapping) override; 961 void printVersionSymbolSection(const ELFFile<ELFT> *Obj, 962 const Elf_Shdr *Sec) override; 963 void printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 964 const Elf_Shdr *Sec) override; 965 void printVersionDependencySection(const ELFFile<ELFT> *Obj, 966 const Elf_Shdr *Sec) override; 967 void printHashHistograms(const ELFFile<ELFT> *Obj) override; 968 void printCGProfile(const ELFFile<ELFT> *Obj) override; 969 void printAddrsig(const ELFFile<ELFT> *Obj) override; 970 void printNotes(const ELFFile<ELFT> *Obj) override; 971 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 972 void printStackSizes(const ELFObjectFile<ELFT> *Obj) override; 973 void printStackSizeEntry(uint64_t Size, StringRef FuncName) override; 974 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 975 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 976 void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) override; 977 978 private: 979 void printRelocation(const ELFO *Obj, unsigned SecIndex, Elf_Rela Rel, 980 unsigned RelIndex, const Elf_Shdr *SymTab); 981 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 982 void printSymbols(const ELFO *Obj); 983 void printDynamicSymbols(const ELFO *Obj); 984 void printSymbolSection(const Elf_Sym *Symbol, const Elf_Sym *First); 985 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 986 Optional<StringRef> StrTable, bool IsDynamic, 987 bool /*NonVisibilityBitsUsed*/) override; 988 void printProgramHeaders(const ELFO *Obj); 989 void printSectionMapping(const ELFO *Obj) {} 990 991 ScopedPrinter &W; 992 }; 993 994 } // end anonymous namespace 995 996 namespace llvm { 997 998 template <class ELFT> 999 static std::error_code createELFDumper(const ELFObjectFile<ELFT> *Obj, 1000 ScopedPrinter &Writer, 1001 std::unique_ptr<ObjDumper> &Result) { 1002 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 1003 return readobj_error::success; 1004 } 1005 1006 std::error_code createELFDumper(const object::ObjectFile *Obj, 1007 ScopedPrinter &Writer, 1008 std::unique_ptr<ObjDumper> &Result) { 1009 // Little-endian 32-bit 1010 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 1011 return createELFDumper(ELFObj, Writer, Result); 1012 1013 // Big-endian 32-bit 1014 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 1015 return createELFDumper(ELFObj, Writer, Result); 1016 1017 // Little-endian 64-bit 1018 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 1019 return createELFDumper(ELFObj, Writer, Result); 1020 1021 // Big-endian 64-bit 1022 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 1023 return createELFDumper(ELFObj, Writer, Result); 1024 1025 return readobj_error::unsupported_obj_file_format; 1026 } 1027 1028 } // end namespace llvm 1029 1030 template <class ELFT> Error ELFDumper<ELFT>::LoadVersionMap() const { 1031 // If there is no dynamic symtab or version table, there is nothing to do. 1032 if (!DynSymRegion || !SymbolVersionSection) 1033 return Error::success(); 1034 1035 // Has the VersionMap already been loaded? 1036 if (!VersionMap.empty()) 1037 return Error::success(); 1038 1039 // The first two version indexes are reserved. 1040 // Index 0 is LOCAL, index 1 is GLOBAL. 1041 VersionMap.push_back(VersionEntry()); 1042 VersionMap.push_back(VersionEntry()); 1043 1044 auto InsertEntry = [this](unsigned N, StringRef Version, bool IsVerdef) { 1045 if (N >= VersionMap.size()) 1046 VersionMap.resize(N + 1); 1047 VersionMap[N] = {std::string(Version), IsVerdef}; 1048 }; 1049 1050 if (SymbolVersionDefSection) { 1051 Expected<std::vector<VerDef>> Defs = 1052 this->getVersionDefinitions(SymbolVersionDefSection); 1053 if (!Defs) 1054 return Defs.takeError(); 1055 for (const VerDef &Def : *Defs) 1056 InsertEntry(Def.Ndx & ELF::VERSYM_VERSION, Def.Name, true); 1057 } 1058 1059 if (SymbolVersionNeedSection) { 1060 Expected<std::vector<VerNeed>> Deps = 1061 this->getVersionDependencies(SymbolVersionNeedSection); 1062 if (!Deps) 1063 return Deps.takeError(); 1064 for (const VerNeed &Dep : *Deps) 1065 for (const VernAux &Aux : Dep.AuxV) 1066 InsertEntry(Aux.Other & ELF::VERSYM_VERSION, Aux.Name, false); 1067 } 1068 1069 return Error::success(); 1070 } 1071 1072 template <typename ELFT> 1073 Expected<StringRef> ELFDumper<ELFT>::getSymbolVersion(const Elf_Sym *Sym, 1074 bool &IsDefault) const { 1075 // This is a dynamic symbol. Look in the GNU symbol version table. 1076 if (!SymbolVersionSection) { 1077 // No version table. 1078 IsDefault = false; 1079 return ""; 1080 } 1081 1082 assert(DynSymRegion && "DynSymRegion has not been initialised"); 1083 // Determine the position in the symbol table of this entry. 1084 size_t EntryIndex = (reinterpret_cast<uintptr_t>(Sym) - 1085 reinterpret_cast<uintptr_t>(DynSymRegion->Addr)) / 1086 sizeof(Elf_Sym); 1087 1088 // Get the corresponding version index entry. 1089 const Elf_Versym *Versym = unwrapOrError( 1090 ObjF->getFileName(), ObjF->getELFFile()->template getEntry<Elf_Versym>( 1091 SymbolVersionSection, EntryIndex)); 1092 return this->getSymbolVersionByIndex(Versym->vs_index, IsDefault); 1093 } 1094 1095 template <typename ELFT> 1096 Expected<std::pair<const typename ELFT::Sym *, std::string>> 1097 ELFDumper<ELFT>::getRelocationTarget(const Elf_Shdr *SymTab, 1098 const Elf_Rela &R) const { 1099 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 1100 Expected<const Elf_Sym *> SymOrErr = Obj->getRelocationSymbol(&R, SymTab); 1101 if (!SymOrErr) 1102 return SymOrErr.takeError(); 1103 const Elf_Sym *Sym = *SymOrErr; 1104 if (!Sym) 1105 return std::make_pair(nullptr, ""); 1106 1107 // The st_name field of a STT_SECTION is usually 0 (empty string). 1108 // This code block returns the section name. 1109 if (Sym->getType() == ELF::STT_SECTION) { 1110 Expected<const Elf_Shdr *> SecOrErr = 1111 Obj->getSection(Sym, SymTab, ShndxTable); 1112 if (!SecOrErr) 1113 return SecOrErr.takeError(); 1114 // A section symbol describes the section at index 0. 1115 if (*SecOrErr == nullptr) 1116 return std::make_pair(Sym, ""); 1117 1118 Expected<StringRef> NameOrErr = Obj->getSectionName(*SecOrErr); 1119 if (!NameOrErr) 1120 return NameOrErr.takeError(); 1121 return std::make_pair(Sym, NameOrErr->str()); 1122 } 1123 1124 Expected<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*SymTab); 1125 if (!StrTableOrErr) 1126 return StrTableOrErr.takeError(); 1127 1128 std::string SymbolName = 1129 getFullSymbolName(Sym, *StrTableOrErr, SymTab->sh_type == SHT_DYNSYM); 1130 return std::make_pair(Sym, SymbolName); 1131 } 1132 1133 static std::string maybeDemangle(StringRef Name) { 1134 return opts::Demangle ? demangle(std::string(Name)) : Name.str(); 1135 } 1136 1137 template <typename ELFT> 1138 std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const { 1139 auto Warn = [&](Error E) -> std::string { 1140 this->reportUniqueWarning( 1141 createError("unable to read the name of symbol with index " + 1142 Twine(Index) + ": " + toString(std::move(E)))); 1143 return "<?>"; 1144 }; 1145 1146 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 1147 Expected<const typename ELFT::Sym *> SymOrErr = 1148 Obj->getSymbol(DotSymtabSec, Index); 1149 if (!SymOrErr) 1150 return Warn(SymOrErr.takeError()); 1151 1152 Expected<StringRef> StrTabOrErr = Obj->getStringTableForSymtab(*DotSymtabSec); 1153 if (!StrTabOrErr) 1154 return Warn(StrTabOrErr.takeError()); 1155 1156 Expected<StringRef> NameOrErr = (*SymOrErr)->getName(*StrTabOrErr); 1157 if (!NameOrErr) 1158 return Warn(NameOrErr.takeError()); 1159 return maybeDemangle(*NameOrErr); 1160 } 1161 1162 template <typename ELFT> 1163 Expected<StringRef> 1164 ELFDumper<ELFT>::getSymbolVersionByIndex(uint32_t SymbolVersionIndex, 1165 bool &IsDefault) const { 1166 size_t VersionIndex = SymbolVersionIndex & VERSYM_VERSION; 1167 1168 // Special markers for unversioned symbols. 1169 if (VersionIndex == VER_NDX_LOCAL || VersionIndex == VER_NDX_GLOBAL) { 1170 IsDefault = false; 1171 return ""; 1172 } 1173 1174 // Lookup this symbol in the version table. 1175 if (Error E = LoadVersionMap()) 1176 return std::move(E); 1177 if (VersionIndex >= VersionMap.size() || !VersionMap[VersionIndex]) 1178 return createError("SHT_GNU_versym section refers to a version index " + 1179 Twine(VersionIndex) + " which is missing"); 1180 1181 const VersionEntry &Entry = *VersionMap[VersionIndex]; 1182 if (Entry.IsVerDef) 1183 IsDefault = !(SymbolVersionIndex & VERSYM_HIDDEN); 1184 else 1185 IsDefault = false; 1186 return Entry.Name.c_str(); 1187 } 1188 1189 template <typename ELFT> 1190 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 1191 Optional<StringRef> StrTable, 1192 bool IsDynamic) const { 1193 if (!StrTable) 1194 return "<?>"; 1195 1196 std::string SymbolName; 1197 if (Expected<StringRef> NameOrErr = Symbol->getName(*StrTable)) { 1198 SymbolName = maybeDemangle(*NameOrErr); 1199 } else { 1200 reportUniqueWarning(NameOrErr.takeError()); 1201 return "<?>"; 1202 } 1203 1204 if (SymbolName.empty() && Symbol->getType() == ELF::STT_SECTION) { 1205 Elf_Sym_Range Syms = unwrapOrError( 1206 ObjF->getFileName(), ObjF->getELFFile()->symbols(DotSymtabSec)); 1207 Expected<unsigned> SectionIndex = 1208 getSymbolSectionIndex(Symbol, Syms.begin()); 1209 if (!SectionIndex) { 1210 reportUniqueWarning(SectionIndex.takeError()); 1211 return "<?>"; 1212 } 1213 Expected<StringRef> NameOrErr = getSymbolSectionName(Symbol, *SectionIndex); 1214 if (!NameOrErr) { 1215 reportUniqueWarning(NameOrErr.takeError()); 1216 return ("<section " + Twine(*SectionIndex) + ">").str(); 1217 } 1218 return std::string(*NameOrErr); 1219 } 1220 1221 if (!IsDynamic) 1222 return SymbolName; 1223 1224 bool IsDefault; 1225 Expected<StringRef> VersionOrErr = getSymbolVersion(&*Symbol, IsDefault); 1226 if (!VersionOrErr) { 1227 reportUniqueWarning(VersionOrErr.takeError()); 1228 return SymbolName + "@<corrupt>"; 1229 } 1230 1231 if (!VersionOrErr->empty()) { 1232 SymbolName += (IsDefault ? "@@" : "@"); 1233 SymbolName += *VersionOrErr; 1234 } 1235 return SymbolName; 1236 } 1237 1238 template <typename ELFT> 1239 Expected<unsigned> 1240 ELFDumper<ELFT>::getSymbolSectionIndex(const Elf_Sym *Symbol, 1241 const Elf_Sym *FirstSym) const { 1242 return Symbol->st_shndx == SHN_XINDEX 1243 ? object::getExtendedSymbolTableIndex<ELFT>(Symbol, FirstSym, 1244 ShndxTable) 1245 : Symbol->st_shndx; 1246 } 1247 1248 // If the Symbol has a reserved st_shndx other than SHN_XINDEX, return a 1249 // descriptive interpretation of the st_shndx value. Otherwise, return the name 1250 // of the section with index SectionIndex. This function assumes that if the 1251 // Symbol has st_shndx == SHN_XINDEX the SectionIndex will be the value derived 1252 // from the SHT_SYMTAB_SHNDX section. 1253 template <typename ELFT> 1254 Expected<StringRef> 1255 ELFDumper<ELFT>::getSymbolSectionName(const Elf_Sym *Symbol, 1256 unsigned SectionIndex) const { 1257 if (Symbol->isUndefined()) 1258 return "Undefined"; 1259 if (Symbol->isProcessorSpecific()) 1260 return "Processor Specific"; 1261 if (Symbol->isOSSpecific()) 1262 return "Operating System Specific"; 1263 if (Symbol->isAbsolute()) 1264 return "Absolute"; 1265 if (Symbol->isCommon()) 1266 return "Common"; 1267 if (Symbol->isReserved() && Symbol->st_shndx != SHN_XINDEX) 1268 return "Reserved"; 1269 1270 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 1271 Expected<const Elf_Shdr *> SecOrErr = 1272 Obj->getSection(SectionIndex); 1273 if (!SecOrErr) 1274 return SecOrErr.takeError(); 1275 return Obj->getSectionName(*SecOrErr); 1276 } 1277 1278 template <class ELFO> 1279 static const typename ELFO::Elf_Shdr * 1280 findNotEmptySectionByAddress(const ELFO *Obj, StringRef FileName, 1281 uint64_t Addr) { 1282 for (const typename ELFO::Elf_Shdr &Shdr : cantFail(Obj->sections())) 1283 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 1284 return &Shdr; 1285 return nullptr; 1286 } 1287 1288 template <class ELFO> 1289 static const typename ELFO::Elf_Shdr * 1290 findSectionByName(const ELFO &Obj, StringRef FileName, StringRef Name) { 1291 for (const typename ELFO::Elf_Shdr &Shdr : cantFail(Obj.sections())) 1292 if (Name == unwrapOrError(FileName, Obj.getSectionName(&Shdr))) 1293 return &Shdr; 1294 return nullptr; 1295 } 1296 1297 static const EnumEntry<unsigned> ElfClass[] = { 1298 {"None", "none", ELF::ELFCLASSNONE}, 1299 {"32-bit", "ELF32", ELF::ELFCLASS32}, 1300 {"64-bit", "ELF64", ELF::ELFCLASS64}, 1301 }; 1302 1303 static const EnumEntry<unsigned> ElfDataEncoding[] = { 1304 {"None", "none", ELF::ELFDATANONE}, 1305 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 1306 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 1307 }; 1308 1309 static const EnumEntry<unsigned> ElfObjectFileType[] = { 1310 {"None", "NONE (none)", ELF::ET_NONE}, 1311 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 1312 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 1313 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 1314 {"Core", "CORE (Core file)", ELF::ET_CORE}, 1315 }; 1316 1317 static const EnumEntry<unsigned> ElfOSABI[] = { 1318 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 1319 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 1320 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 1321 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 1322 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 1323 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 1324 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 1325 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 1326 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 1327 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 1328 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 1329 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 1330 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 1331 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 1332 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 1333 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 1334 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 1335 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 1336 }; 1337 1338 static const EnumEntry<unsigned> SymVersionFlags[] = { 1339 {"Base", "BASE", VER_FLG_BASE}, 1340 {"Weak", "WEAK", VER_FLG_WEAK}, 1341 {"Info", "INFO", VER_FLG_INFO}}; 1342 1343 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 1344 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 1345 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 1346 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 1347 }; 1348 1349 static const EnumEntry<unsigned> ARMElfOSABI[] = { 1350 {"ARM", "ARM", ELF::ELFOSABI_ARM} 1351 }; 1352 1353 static const EnumEntry<unsigned> C6000ElfOSABI[] = { 1354 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 1355 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 1356 }; 1357 1358 static const EnumEntry<unsigned> ElfMachineType[] = { 1359 ENUM_ENT(EM_NONE, "None"), 1360 ENUM_ENT(EM_M32, "WE32100"), 1361 ENUM_ENT(EM_SPARC, "Sparc"), 1362 ENUM_ENT(EM_386, "Intel 80386"), 1363 ENUM_ENT(EM_68K, "MC68000"), 1364 ENUM_ENT(EM_88K, "MC88000"), 1365 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 1366 ENUM_ENT(EM_860, "Intel 80860"), 1367 ENUM_ENT(EM_MIPS, "MIPS R3000"), 1368 ENUM_ENT(EM_S370, "IBM System/370"), 1369 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 1370 ENUM_ENT(EM_PARISC, "HPPA"), 1371 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 1372 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 1373 ENUM_ENT(EM_960, "Intel 80960"), 1374 ENUM_ENT(EM_PPC, "PowerPC"), 1375 ENUM_ENT(EM_PPC64, "PowerPC64"), 1376 ENUM_ENT(EM_S390, "IBM S/390"), 1377 ENUM_ENT(EM_SPU, "SPU"), 1378 ENUM_ENT(EM_V800, "NEC V800 series"), 1379 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 1380 ENUM_ENT(EM_RH32, "TRW RH-32"), 1381 ENUM_ENT(EM_RCE, "Motorola RCE"), 1382 ENUM_ENT(EM_ARM, "ARM"), 1383 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 1384 ENUM_ENT(EM_SH, "Hitachi SH"), 1385 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 1386 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 1387 ENUM_ENT(EM_ARC, "ARC"), 1388 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 1389 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 1390 ENUM_ENT(EM_H8S, "Hitachi H8S"), 1391 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 1392 ENUM_ENT(EM_IA_64, "Intel IA-64"), 1393 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 1394 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 1395 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 1396 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 1397 ENUM_ENT(EM_PCP, "Siemens PCP"), 1398 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 1399 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 1400 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 1401 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 1402 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 1403 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 1404 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 1405 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 1406 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 1407 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 1408 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 1409 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 1410 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 1411 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 1412 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 1413 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 1414 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 1415 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 1416 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 1417 ENUM_ENT(EM_VAX, "Digital VAX"), 1418 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 1419 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 1420 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 1421 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 1422 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 1423 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 1424 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 1425 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 1426 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 1427 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 1428 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 1429 ENUM_ENT(EM_V850, "NEC v850"), 1430 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 1431 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 1432 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 1433 ENUM_ENT(EM_PJ, "picoJava"), 1434 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 1435 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 1436 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 1437 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 1438 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 1439 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 1440 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 1441 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 1442 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 1443 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 1444 ENUM_ENT(EM_MAX, "MAX Processor"), 1445 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 1446 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 1447 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 1448 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 1449 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 1450 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 1451 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 1452 ENUM_ENT(EM_UNICORE, "Unicore"), 1453 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 1454 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 1455 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 1456 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 1457 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 1458 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 1459 ENUM_ENT(EM_M16C, "Renesas M16C"), 1460 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 1461 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 1462 ENUM_ENT(EM_M32C, "Renesas M32C"), 1463 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 1464 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 1465 ENUM_ENT(EM_SHARC, "EM_SHARC"), 1466 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 1467 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 1468 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 1469 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 1470 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 1471 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 1472 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 1473 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 1474 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 1475 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 1476 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 1477 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 1478 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 1479 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 1480 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 1481 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 1482 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 1483 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 1484 // FIXME: Following EM_ECOG1X definitions is dead code since EM_ECOG1X has 1485 // an identical number to EM_ECOG1. 1486 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 1487 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 1488 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 1489 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 1490 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 1491 ENUM_ENT(EM_RX, "Renesas RX"), 1492 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 1493 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 1494 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 1495 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 1496 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 1497 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 1498 ENUM_ENT(EM_L10M, "EM_L10M"), 1499 ENUM_ENT(EM_K10M, "EM_K10M"), 1500 ENUM_ENT(EM_AARCH64, "AArch64"), 1501 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 1502 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 1503 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 1504 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 1505 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 1506 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 1507 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 1508 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 1509 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 1510 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 1511 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 1512 ENUM_ENT(EM_RL78, "Renesas RL78"), 1513 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 1514 ENUM_ENT(EM_78KOR, "EM_78KOR"), 1515 ENUM_ENT(EM_56800EX, "EM_56800EX"), 1516 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 1517 ENUM_ENT(EM_RISCV, "RISC-V"), 1518 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1519 ENUM_ENT(EM_BPF, "EM_BPF"), 1520 ENUM_ENT(EM_VE, "NEC SX-Aurora Vector Engine"), 1521 }; 1522 1523 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 1524 {"Local", "LOCAL", ELF::STB_LOCAL}, 1525 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1526 {"Weak", "WEAK", ELF::STB_WEAK}, 1527 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1528 1529 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1530 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1531 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1532 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1533 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1534 1535 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1536 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1537 }; 1538 1539 static const char *getGroupType(uint32_t Flag) { 1540 if (Flag & ELF::GRP_COMDAT) 1541 return "COMDAT"; 1542 else 1543 return "(unknown)"; 1544 } 1545 1546 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1547 ENUM_ENT(SHF_WRITE, "W"), 1548 ENUM_ENT(SHF_ALLOC, "A"), 1549 ENUM_ENT(SHF_EXECINSTR, "X"), 1550 ENUM_ENT(SHF_MERGE, "M"), 1551 ENUM_ENT(SHF_STRINGS, "S"), 1552 ENUM_ENT(SHF_INFO_LINK, "I"), 1553 ENUM_ENT(SHF_LINK_ORDER, "L"), 1554 ENUM_ENT(SHF_OS_NONCONFORMING, "O"), 1555 ENUM_ENT(SHF_GROUP, "G"), 1556 ENUM_ENT(SHF_TLS, "T"), 1557 ENUM_ENT(SHF_COMPRESSED, "C"), 1558 ENUM_ENT(SHF_EXCLUDE, "E"), 1559 }; 1560 1561 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1562 ENUM_ENT(XCORE_SHF_CP_SECTION, ""), 1563 ENUM_ENT(XCORE_SHF_DP_SECTION, "") 1564 }; 1565 1566 static const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1567 ENUM_ENT(SHF_ARM_PURECODE, "y") 1568 }; 1569 1570 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1571 ENUM_ENT(SHF_HEX_GPREL, "") 1572 }; 1573 1574 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1575 ENUM_ENT(SHF_MIPS_NODUPES, ""), 1576 ENUM_ENT(SHF_MIPS_NAMES, ""), 1577 ENUM_ENT(SHF_MIPS_LOCAL, ""), 1578 ENUM_ENT(SHF_MIPS_NOSTRIP, ""), 1579 ENUM_ENT(SHF_MIPS_GPREL, ""), 1580 ENUM_ENT(SHF_MIPS_MERGE, ""), 1581 ENUM_ENT(SHF_MIPS_ADDR, ""), 1582 ENUM_ENT(SHF_MIPS_STRING, "") 1583 }; 1584 1585 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1586 ENUM_ENT(SHF_X86_64_LARGE, "l") 1587 }; 1588 1589 static std::vector<EnumEntry<unsigned>> 1590 getSectionFlagsForTarget(unsigned EMachine) { 1591 std::vector<EnumEntry<unsigned>> Ret(std::begin(ElfSectionFlags), 1592 std::end(ElfSectionFlags)); 1593 switch (EMachine) { 1594 case EM_ARM: 1595 Ret.insert(Ret.end(), std::begin(ElfARMSectionFlags), 1596 std::end(ElfARMSectionFlags)); 1597 break; 1598 case EM_HEXAGON: 1599 Ret.insert(Ret.end(), std::begin(ElfHexagonSectionFlags), 1600 std::end(ElfHexagonSectionFlags)); 1601 break; 1602 case EM_MIPS: 1603 Ret.insert(Ret.end(), std::begin(ElfMipsSectionFlags), 1604 std::end(ElfMipsSectionFlags)); 1605 break; 1606 case EM_X86_64: 1607 Ret.insert(Ret.end(), std::begin(ElfX86_64SectionFlags), 1608 std::end(ElfX86_64SectionFlags)); 1609 break; 1610 case EM_XCORE: 1611 Ret.insert(Ret.end(), std::begin(ElfXCoreSectionFlags), 1612 std::end(ElfXCoreSectionFlags)); 1613 break; 1614 default: 1615 break; 1616 } 1617 return Ret; 1618 } 1619 1620 static std::string getGNUFlags(unsigned EMachine, uint64_t Flags) { 1621 // Here we are trying to build the flags string in the same way as GNU does. 1622 // It is not that straightforward. Imagine we have sh_flags == 0x90000000. 1623 // SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000. 1624 // GNU readelf will not print "E" or "Ep" in this case, but will print just 1625 // "p". It only will print "E" when no other processor flag is set. 1626 std::string Str; 1627 bool HasUnknownFlag = false; 1628 bool HasOSFlag = false; 1629 bool HasProcFlag = false; 1630 std::vector<EnumEntry<unsigned>> FlagsList = 1631 getSectionFlagsForTarget(EMachine); 1632 while (Flags) { 1633 // Take the least significant bit as a flag. 1634 uint64_t Flag = Flags & -Flags; 1635 Flags -= Flag; 1636 1637 // Find the flag in the known flags list. 1638 auto I = llvm::find_if(FlagsList, [=](const EnumEntry<unsigned> &E) { 1639 // Flags with empty names are not printed in GNU style output. 1640 return E.Value == Flag && !E.AltName.empty(); 1641 }); 1642 if (I != FlagsList.end()) { 1643 Str += I->AltName; 1644 continue; 1645 } 1646 1647 // If we did not find a matching regular flag, then we deal with an OS 1648 // specific flag, processor specific flag or an unknown flag. 1649 if (Flag & ELF::SHF_MASKOS) { 1650 HasOSFlag = true; 1651 Flags &= ~ELF::SHF_MASKOS; 1652 } else if (Flag & ELF::SHF_MASKPROC) { 1653 HasProcFlag = true; 1654 // Mask off all the processor-specific bits. This removes the SHF_EXCLUDE 1655 // bit if set so that it doesn't also get printed. 1656 Flags &= ~ELF::SHF_MASKPROC; 1657 } else { 1658 HasUnknownFlag = true; 1659 } 1660 } 1661 1662 // "o", "p" and "x" are printed last. 1663 if (HasOSFlag) 1664 Str += "o"; 1665 if (HasProcFlag) 1666 Str += "p"; 1667 if (HasUnknownFlag) 1668 Str += "x"; 1669 return Str; 1670 } 1671 1672 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1673 // Check potentially overlapped processor-specific 1674 // program header type. 1675 switch (Arch) { 1676 case ELF::EM_ARM: 1677 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); } 1678 break; 1679 case ELF::EM_MIPS: 1680 case ELF::EM_MIPS_RS3_LE: 1681 switch (Type) { 1682 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1683 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1684 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1685 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1686 } 1687 break; 1688 } 1689 1690 switch (Type) { 1691 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1692 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1693 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1694 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1695 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1696 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1697 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1698 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1699 1700 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1701 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1702 1703 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1704 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1705 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_PROPERTY); 1706 1707 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1708 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1709 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1710 1711 default: 1712 return ""; 1713 } 1714 } 1715 1716 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1717 switch (Type) { 1718 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1719 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1720 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1721 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1722 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1723 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1724 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1725 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1726 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1727 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1728 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1729 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1730 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_PROPERTY) 1731 default: 1732 // All machine specific PT_* types 1733 switch (Arch) { 1734 case ELF::EM_ARM: 1735 if (Type == ELF::PT_ARM_EXIDX) 1736 return "EXIDX"; 1737 break; 1738 case ELF::EM_MIPS: 1739 case ELF::EM_MIPS_RS3_LE: 1740 switch (Type) { 1741 case PT_MIPS_REGINFO: 1742 return "REGINFO"; 1743 case PT_MIPS_RTPROC: 1744 return "RTPROC"; 1745 case PT_MIPS_OPTIONS: 1746 return "OPTIONS"; 1747 case PT_MIPS_ABIFLAGS: 1748 return "ABIFLAGS"; 1749 } 1750 break; 1751 } 1752 } 1753 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1754 } 1755 1756 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1757 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1758 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1759 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1760 }; 1761 1762 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1763 ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"), 1764 ENUM_ENT(EF_MIPS_PIC, "pic"), 1765 ENUM_ENT(EF_MIPS_CPIC, "cpic"), 1766 ENUM_ENT(EF_MIPS_ABI2, "abi2"), 1767 ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"), 1768 ENUM_ENT(EF_MIPS_FP64, "fp64"), 1769 ENUM_ENT(EF_MIPS_NAN2008, "nan2008"), 1770 ENUM_ENT(EF_MIPS_ABI_O32, "o32"), 1771 ENUM_ENT(EF_MIPS_ABI_O64, "o64"), 1772 ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"), 1773 ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"), 1774 ENUM_ENT(EF_MIPS_MACH_3900, "3900"), 1775 ENUM_ENT(EF_MIPS_MACH_4010, "4010"), 1776 ENUM_ENT(EF_MIPS_MACH_4100, "4100"), 1777 ENUM_ENT(EF_MIPS_MACH_4650, "4650"), 1778 ENUM_ENT(EF_MIPS_MACH_4120, "4120"), 1779 ENUM_ENT(EF_MIPS_MACH_4111, "4111"), 1780 ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"), 1781 ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"), 1782 ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"), 1783 ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"), 1784 ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"), 1785 ENUM_ENT(EF_MIPS_MACH_5400, "5400"), 1786 ENUM_ENT(EF_MIPS_MACH_5900, "5900"), 1787 ENUM_ENT(EF_MIPS_MACH_5500, "5500"), 1788 ENUM_ENT(EF_MIPS_MACH_9000, "9000"), 1789 ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"), 1790 ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"), 1791 ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"), 1792 ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"), 1793 ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"), 1794 ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"), 1795 ENUM_ENT(EF_MIPS_ARCH_1, "mips1"), 1796 ENUM_ENT(EF_MIPS_ARCH_2, "mips2"), 1797 ENUM_ENT(EF_MIPS_ARCH_3, "mips3"), 1798 ENUM_ENT(EF_MIPS_ARCH_4, "mips4"), 1799 ENUM_ENT(EF_MIPS_ARCH_5, "mips5"), 1800 ENUM_ENT(EF_MIPS_ARCH_32, "mips32"), 1801 ENUM_ENT(EF_MIPS_ARCH_64, "mips64"), 1802 ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"), 1803 ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"), 1804 ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"), 1805 ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6") 1806 }; 1807 1808 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { 1809 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), 1810 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), 1811 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), 1812 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), 1813 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), 1814 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), 1815 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), 1816 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), 1817 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), 1818 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), 1819 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), 1820 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), 1821 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), 1822 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), 1823 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), 1824 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), 1825 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), 1826 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), 1827 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), 1828 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), 1829 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), 1830 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), 1831 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), 1832 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), 1833 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), 1834 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), 1835 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), 1836 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), 1837 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), 1838 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), 1839 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904), 1840 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906), 1841 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908), 1842 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909), 1843 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010), 1844 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011), 1845 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012), 1846 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1030), 1847 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK), 1848 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC) 1849 }; 1850 1851 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1852 ENUM_ENT(EF_RISCV_RVC, "RVC"), 1853 ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"), 1854 ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"), 1855 ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"), 1856 ENUM_ENT(EF_RISCV_RVE, "RVE") 1857 }; 1858 1859 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1860 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1861 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1862 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1863 }; 1864 1865 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1866 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1867 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1868 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1869 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1870 }; 1871 1872 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1873 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1874 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1875 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1876 }; 1877 1878 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1879 switch (Odk) { 1880 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1881 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1882 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1883 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1884 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1885 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1886 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1887 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1888 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1889 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1890 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1891 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1892 default: 1893 return "Unknown"; 1894 } 1895 } 1896 1897 template <typename ELFT> 1898 std::pair<const typename ELFT::Phdr *, const typename ELFT::Shdr *> 1899 ELFDumper<ELFT>::findDynamic(const ELFFile<ELFT> *Obj) { 1900 // Try to locate the PT_DYNAMIC header. 1901 const Elf_Phdr *DynamicPhdr = nullptr; 1902 for (const Elf_Phdr &Phdr : 1903 unwrapOrError(ObjF->getFileName(), Obj->program_headers())) { 1904 if (Phdr.p_type != ELF::PT_DYNAMIC) 1905 continue; 1906 DynamicPhdr = &Phdr; 1907 break; 1908 } 1909 1910 // Try to locate the .dynamic section in the sections header table. 1911 const Elf_Shdr *DynamicSec = nullptr; 1912 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 1913 if (Sec.sh_type != ELF::SHT_DYNAMIC) 1914 continue; 1915 DynamicSec = &Sec; 1916 break; 1917 } 1918 1919 if (DynamicPhdr && DynamicPhdr->p_offset + DynamicPhdr->p_filesz > 1920 ObjF->getMemoryBufferRef().getBufferSize()) { 1921 reportWarning( 1922 createError( 1923 "PT_DYNAMIC segment offset + size exceeds the size of the file"), 1924 ObjF->getFileName()); 1925 // Don't use the broken dynamic header. 1926 DynamicPhdr = nullptr; 1927 } 1928 1929 if (DynamicPhdr && DynamicSec) { 1930 StringRef Name = 1931 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(DynamicSec)); 1932 if (DynamicSec->sh_addr + DynamicSec->sh_size > 1933 DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz || 1934 DynamicSec->sh_addr < DynamicPhdr->p_vaddr) 1935 reportWarning(createError("The SHT_DYNAMIC section '" + Name + 1936 "' is not contained within the " 1937 "PT_DYNAMIC segment"), 1938 ObjF->getFileName()); 1939 1940 if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr) 1941 reportWarning(createError("The SHT_DYNAMIC section '" + Name + 1942 "' is not at the start of " 1943 "PT_DYNAMIC segment"), 1944 ObjF->getFileName()); 1945 } 1946 1947 return std::make_pair(DynamicPhdr, DynamicSec); 1948 } 1949 1950 template <typename ELFT> 1951 void ELFDumper<ELFT>::loadDynamicTable(const ELFFile<ELFT> *Obj) { 1952 const Elf_Phdr *DynamicPhdr; 1953 const Elf_Shdr *DynamicSec; 1954 std::tie(DynamicPhdr, DynamicSec) = findDynamic(Obj); 1955 if (!DynamicPhdr && !DynamicSec) 1956 return; 1957 1958 DynRegionInfo FromPhdr(ObjF->getFileName()); 1959 bool IsPhdrTableValid = false; 1960 if (DynamicPhdr) { 1961 FromPhdr = createDRIFrom(DynamicPhdr, sizeof(Elf_Dyn)); 1962 FromPhdr.SizePrintName = "PT_DYNAMIC size"; 1963 FromPhdr.EntSizePrintName = ""; 1964 1965 IsPhdrTableValid = !FromPhdr.getAsArrayRef<Elf_Dyn>().empty(); 1966 } 1967 1968 // Locate the dynamic table described in a section header. 1969 // Ignore sh_entsize and use the expected value for entry size explicitly. 1970 // This allows us to dump dynamic sections with a broken sh_entsize 1971 // field. 1972 DynRegionInfo FromSec(ObjF->getFileName()); 1973 bool IsSecTableValid = false; 1974 if (DynamicSec) { 1975 FromSec = 1976 checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset, 1977 DynamicSec->sh_size, sizeof(Elf_Dyn), ObjF->getFileName()}); 1978 FromSec.Context = ("section with index " + 1979 Twine(DynamicSec - &cantFail(Obj->sections()).front())) 1980 .str(); 1981 FromSec.EntSizePrintName = ""; 1982 1983 IsSecTableValid = !FromSec.getAsArrayRef<Elf_Dyn>().empty(); 1984 } 1985 1986 // When we only have information from one of the SHT_DYNAMIC section header or 1987 // PT_DYNAMIC program header, just use that. 1988 if (!DynamicPhdr || !DynamicSec) { 1989 if ((DynamicPhdr && IsPhdrTableValid) || (DynamicSec && IsSecTableValid)) { 1990 DynamicTable = DynamicPhdr ? FromPhdr : FromSec; 1991 parseDynamicTable(Obj); 1992 } else { 1993 reportWarning(createError("no valid dynamic table was found"), 1994 ObjF->getFileName()); 1995 } 1996 return; 1997 } 1998 1999 // At this point we have tables found from the section header and from the 2000 // dynamic segment. Usually they match, but we have to do sanity checks to 2001 // verify that. 2002 2003 if (FromPhdr.Addr != FromSec.Addr) 2004 reportWarning(createError("SHT_DYNAMIC section header and PT_DYNAMIC " 2005 "program header disagree about " 2006 "the location of the dynamic table"), 2007 ObjF->getFileName()); 2008 2009 if (!IsPhdrTableValid && !IsSecTableValid) { 2010 reportWarning(createError("no valid dynamic table was found"), 2011 ObjF->getFileName()); 2012 return; 2013 } 2014 2015 // Information in the PT_DYNAMIC program header has priority over the information 2016 // in a section header. 2017 if (IsPhdrTableValid) { 2018 if (!IsSecTableValid) 2019 reportWarning( 2020 createError( 2021 "SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used"), 2022 ObjF->getFileName()); 2023 DynamicTable = FromPhdr; 2024 } else { 2025 reportWarning( 2026 createError( 2027 "PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used"), 2028 ObjF->getFileName()); 2029 DynamicTable = FromSec; 2030 } 2031 2032 parseDynamicTable(Obj); 2033 } 2034 2035 template <typename ELFT> 2036 ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> *ObjF, 2037 ScopedPrinter &Writer) 2038 : ObjDumper(Writer), ObjF(ObjF), DynRelRegion(ObjF->getFileName()), 2039 DynRelaRegion(ObjF->getFileName()), DynRelrRegion(ObjF->getFileName()), 2040 DynPLTRelRegion(ObjF->getFileName()), DynamicTable(ObjF->getFileName()) { 2041 // Dumper reports all non-critical errors as warnings. 2042 // It does not print the same warning more than once. 2043 WarningHandler = [this](const Twine &Msg) { 2044 if (Warnings.insert(Msg.str()).second) 2045 reportWarning(createError(Msg), this->ObjF->getFileName()); 2046 return Error::success(); 2047 }; 2048 2049 if (opts::Output == opts::GNU) 2050 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 2051 else 2052 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 2053 2054 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 2055 typename ELFT::ShdrRange Sections = cantFail(Obj->sections()); 2056 for (const Elf_Shdr &Sec : Sections) { 2057 switch (Sec.sh_type) { 2058 case ELF::SHT_SYMTAB: 2059 if (!DotSymtabSec) 2060 DotSymtabSec = &Sec; 2061 break; 2062 case ELF::SHT_DYNSYM: 2063 if (!DynSymRegion) { 2064 DynSymRegion = createDRIFrom(&Sec); 2065 DynSymRegion->Context = 2066 ("section with index " + Twine(&Sec - &Sections.front())).str(); 2067 // This is only used (if Elf_Shdr present)for naming section in GNU 2068 // style 2069 DynSymtabName = 2070 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec)); 2071 2072 if (Expected<StringRef> E = Obj->getStringTableForSymtab(Sec)) 2073 DynamicStringTable = *E; 2074 else 2075 reportWarning(E.takeError(), ObjF->getFileName()); 2076 } 2077 break; 2078 case ELF::SHT_SYMTAB_SHNDX: 2079 ShndxTable = unwrapOrError(ObjF->getFileName(), Obj->getSHNDXTable(Sec)); 2080 break; 2081 case ELF::SHT_GNU_versym: 2082 if (!SymbolVersionSection) 2083 SymbolVersionSection = &Sec; 2084 break; 2085 case ELF::SHT_GNU_verdef: 2086 if (!SymbolVersionDefSection) 2087 SymbolVersionDefSection = &Sec; 2088 break; 2089 case ELF::SHT_GNU_verneed: 2090 if (!SymbolVersionNeedSection) 2091 SymbolVersionNeedSection = &Sec; 2092 break; 2093 case ELF::SHT_LLVM_CALL_GRAPH_PROFILE: 2094 if (!DotCGProfileSec) 2095 DotCGProfileSec = &Sec; 2096 break; 2097 case ELF::SHT_LLVM_ADDRSIG: 2098 if (!DotAddrsigSec) 2099 DotAddrsigSec = &Sec; 2100 break; 2101 } 2102 } 2103 2104 loadDynamicTable(Obj); 2105 } 2106 2107 template <typename ELFT> 2108 void ELFDumper<ELFT>::parseDynamicTable(const ELFFile<ELFT> *Obj) { 2109 auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * { 2110 auto MappedAddrOrError = ObjF->getELFFile()->toMappedAddr(VAddr); 2111 if (!MappedAddrOrError) { 2112 Error Err = 2113 createError("Unable to parse DT_" + Obj->getDynamicTagAsString(Tag) + 2114 ": " + llvm::toString(MappedAddrOrError.takeError())); 2115 2116 reportWarning(std::move(Err), ObjF->getFileName()); 2117 return nullptr; 2118 } 2119 return MappedAddrOrError.get(); 2120 }; 2121 2122 uint64_t SONameOffset = 0; 2123 const char *StringTableBegin = nullptr; 2124 uint64_t StringTableSize = 0; 2125 Optional<DynRegionInfo> DynSymFromTable; 2126 for (const Elf_Dyn &Dyn : dynamic_table()) { 2127 switch (Dyn.d_tag) { 2128 case ELF::DT_HASH: 2129 HashTable = reinterpret_cast<const Elf_Hash *>( 2130 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 2131 break; 2132 case ELF::DT_GNU_HASH: 2133 GnuHashTable = reinterpret_cast<const Elf_GnuHash *>( 2134 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 2135 break; 2136 case ELF::DT_STRTAB: 2137 StringTableBegin = reinterpret_cast<const char *>( 2138 toMappedAddr(Dyn.getTag(), Dyn.getPtr())); 2139 break; 2140 case ELF::DT_STRSZ: 2141 StringTableSize = Dyn.getVal(); 2142 break; 2143 case ELF::DT_SYMTAB: { 2144 // If we can't map the DT_SYMTAB value to an address (e.g. when there are 2145 // no program headers), we ignore its value. 2146 if (const uint8_t *VA = toMappedAddr(Dyn.getTag(), Dyn.getPtr())) { 2147 DynSymFromTable.emplace(ObjF->getFileName()); 2148 DynSymFromTable->Addr = VA; 2149 DynSymFromTable->EntSize = sizeof(Elf_Sym); 2150 DynSymFromTable->EntSizePrintName = ""; 2151 } 2152 break; 2153 } 2154 case ELF::DT_SYMENT: { 2155 uint64_t Val = Dyn.getVal(); 2156 if (Val != sizeof(Elf_Sym)) 2157 reportWarning(createError("DT_SYMENT value of 0x" + 2158 Twine::utohexstr(Val) + 2159 " is not the size of a symbol (0x" + 2160 Twine::utohexstr(sizeof(Elf_Sym)) + ")"), 2161 ObjF->getFileName()); 2162 break; 2163 } 2164 case ELF::DT_RELA: 2165 DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2166 break; 2167 case ELF::DT_RELASZ: 2168 DynRelaRegion.Size = Dyn.getVal(); 2169 DynRelaRegion.SizePrintName = "DT_RELASZ value"; 2170 break; 2171 case ELF::DT_RELAENT: 2172 DynRelaRegion.EntSize = Dyn.getVal(); 2173 DynRelaRegion.EntSizePrintName = "DT_RELAENT value"; 2174 break; 2175 case ELF::DT_SONAME: 2176 SONameOffset = Dyn.getVal(); 2177 break; 2178 case ELF::DT_REL: 2179 DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2180 break; 2181 case ELF::DT_RELSZ: 2182 DynRelRegion.Size = Dyn.getVal(); 2183 DynRelRegion.SizePrintName = "DT_RELSZ value"; 2184 break; 2185 case ELF::DT_RELENT: 2186 DynRelRegion.EntSize = Dyn.getVal(); 2187 DynRelRegion.EntSizePrintName = "DT_RELENT value"; 2188 break; 2189 case ELF::DT_RELR: 2190 case ELF::DT_ANDROID_RELR: 2191 DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2192 break; 2193 case ELF::DT_RELRSZ: 2194 case ELF::DT_ANDROID_RELRSZ: 2195 DynRelrRegion.Size = Dyn.getVal(); 2196 DynRelrRegion.SizePrintName = Dyn.d_tag == ELF::DT_RELRSZ 2197 ? "DT_RELRSZ value" 2198 : "DT_ANDROID_RELRSZ value"; 2199 break; 2200 case ELF::DT_RELRENT: 2201 case ELF::DT_ANDROID_RELRENT: 2202 DynRelrRegion.EntSize = Dyn.getVal(); 2203 DynRelrRegion.EntSizePrintName = Dyn.d_tag == ELF::DT_RELRENT 2204 ? "DT_RELRENT value" 2205 : "DT_ANDROID_RELRENT value"; 2206 break; 2207 case ELF::DT_PLTREL: 2208 if (Dyn.getVal() == DT_REL) 2209 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 2210 else if (Dyn.getVal() == DT_RELA) 2211 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 2212 else 2213 reportError(createError(Twine("unknown DT_PLTREL value of ") + 2214 Twine((uint64_t)Dyn.getVal())), 2215 ObjF->getFileName()); 2216 DynPLTRelRegion.EntSizePrintName = ""; 2217 break; 2218 case ELF::DT_JMPREL: 2219 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr()); 2220 break; 2221 case ELF::DT_PLTRELSZ: 2222 DynPLTRelRegion.Size = Dyn.getVal(); 2223 DynPLTRelRegion.SizePrintName = "DT_PLTRELSZ value"; 2224 break; 2225 } 2226 } 2227 2228 if (StringTableBegin) { 2229 const uint64_t FileSize = ObjF->getELFFile()->getBufSize(); 2230 const uint64_t Offset = 2231 (const uint8_t *)StringTableBegin - ObjF->getELFFile()->base(); 2232 if (StringTableSize > FileSize - Offset) 2233 reportUniqueWarning(createError( 2234 "the dynamic string table at 0x" + Twine::utohexstr(Offset) + 2235 " goes past the end of the file (0x" + Twine::utohexstr(FileSize) + 2236 ") with DT_STRSZ = 0x" + Twine::utohexstr(StringTableSize))); 2237 else 2238 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 2239 } 2240 2241 SOName = getDynamicString(SONameOffset); 2242 2243 if (DynSymRegion) { 2244 // Often we find the information about the dynamic symbol table 2245 // location in the SHT_DYNSYM section header. However, the value in 2246 // DT_SYMTAB has priority, because it is used by dynamic loaders to 2247 // locate .dynsym at runtime. The location we find in the section header 2248 // and the location we find here should match. 2249 if (DynSymFromTable && DynSymFromTable->Addr != DynSymRegion->Addr) 2250 reportUniqueWarning( 2251 createError("SHT_DYNSYM section header and DT_SYMTAB disagree about " 2252 "the location of the dynamic symbol table")); 2253 2254 // According to the ELF gABI: "The number of symbol table entries should 2255 // equal nchain". Check to see if the DT_HASH hash table nchain value 2256 // conflicts with the number of symbols in the dynamic symbol table 2257 // according to the section header. 2258 if (HashTable) { 2259 if (DynSymRegion->EntSize == 0) 2260 reportUniqueWarning( 2261 createError("SHT_DYNSYM section has sh_entsize == 0")); 2262 else if (HashTable->nchain != DynSymRegion->Size / DynSymRegion->EntSize) 2263 reportUniqueWarning(createError( 2264 "hash table nchain (" + Twine(HashTable->nchain) + 2265 ") differs from symbol count derived from SHT_DYNSYM section " 2266 "header (" + 2267 Twine(DynSymRegion->Size / DynSymRegion->EntSize) + ")")); 2268 } 2269 } 2270 2271 // Delay the creation of the actual dynamic symbol table until now, so that 2272 // checks can always be made against the section header-based properties, 2273 // without worrying about tag order. 2274 if (DynSymFromTable) { 2275 if (!DynSymRegion) { 2276 DynSymRegion = DynSymFromTable; 2277 } else { 2278 DynSymRegion->Addr = DynSymFromTable->Addr; 2279 DynSymRegion->EntSize = DynSymFromTable->EntSize; 2280 DynSymRegion->EntSizePrintName = DynSymFromTable->EntSizePrintName; 2281 } 2282 } 2283 2284 // Derive the dynamic symbol table size from the DT_HASH hash table, if 2285 // present. 2286 if (HashTable && DynSymRegion) 2287 DynSymRegion->Size = HashTable->nchain * DynSymRegion->EntSize; 2288 } 2289 2290 template <typename ELFT> 2291 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 2292 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 2293 } 2294 2295 template <typename ELFT> 2296 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 2297 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 2298 } 2299 2300 template <typename ELFT> 2301 typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const { 2302 return DynRelrRegion.getAsArrayRef<Elf_Relr>(); 2303 } 2304 2305 template <class ELFT> void ELFDumper<ELFT>::printFileHeaders() { 2306 ELFDumperStyle->printFileHeaders(ObjF->getELFFile()); 2307 } 2308 2309 template <class ELFT> void ELFDumper<ELFT>::printSectionHeaders() { 2310 ELFDumperStyle->printSectionHeaders(ObjF->getELFFile()); 2311 } 2312 2313 template <class ELFT> void ELFDumper<ELFT>::printRelocations() { 2314 ELFDumperStyle->printRelocations(ObjF->getELFFile()); 2315 } 2316 2317 template <class ELFT> 2318 void ELFDumper<ELFT>::printProgramHeaders( 2319 bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) { 2320 ELFDumperStyle->printProgramHeaders(ObjF->getELFFile(), PrintProgramHeaders, 2321 PrintSectionMapping); 2322 } 2323 2324 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 2325 // Dump version symbol section. 2326 ELFDumperStyle->printVersionSymbolSection(ObjF->getELFFile(), 2327 SymbolVersionSection); 2328 2329 // Dump version definition section. 2330 ELFDumperStyle->printVersionDefinitionSection(ObjF->getELFFile(), 2331 SymbolVersionDefSection); 2332 2333 // Dump version dependency section. 2334 ELFDumperStyle->printVersionDependencySection(ObjF->getELFFile(), 2335 SymbolVersionNeedSection); 2336 } 2337 2338 template <class ELFT> void ELFDumper<ELFT>::printDependentLibs() { 2339 ELFDumperStyle->printDependentLibs(ObjF->getELFFile()); 2340 } 2341 2342 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 2343 ELFDumperStyle->printDynamicRelocations(ObjF->getELFFile()); 2344 } 2345 2346 template <class ELFT> 2347 void ELFDumper<ELFT>::printSymbols(bool PrintSymbols, 2348 bool PrintDynamicSymbols) { 2349 ELFDumperStyle->printSymbols(ObjF->getELFFile(), PrintSymbols, 2350 PrintDynamicSymbols); 2351 } 2352 2353 template <class ELFT> void ELFDumper<ELFT>::printHashSymbols() { 2354 ELFDumperStyle->printHashSymbols(ObjF->getELFFile()); 2355 } 2356 2357 template <class ELFT> void ELFDumper<ELFT>::printHashHistograms() { 2358 ELFDumperStyle->printHashHistograms(ObjF->getELFFile()); 2359 } 2360 2361 template <class ELFT> void ELFDumper<ELFT>::printCGProfile() { 2362 ELFDumperStyle->printCGProfile(ObjF->getELFFile()); 2363 } 2364 2365 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 2366 ELFDumperStyle->printNotes(ObjF->getELFFile()); 2367 } 2368 2369 template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() { 2370 ELFDumperStyle->printELFLinkerOptions(ObjF->getELFFile()); 2371 } 2372 2373 template <class ELFT> void ELFDumper<ELFT>::printStackSizes() { 2374 ELFDumperStyle->printStackSizes(ObjF); 2375 } 2376 2377 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 2378 { #enum, prefix##_##enum } 2379 2380 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 2381 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 2382 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 2383 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 2384 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 2385 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 2386 }; 2387 2388 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 2389 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 2390 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 2391 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 2392 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 2393 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 2394 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 2395 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 2396 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 2397 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 2398 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 2399 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 2400 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 2401 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 2402 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 2403 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 2404 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 2405 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND), 2406 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 2407 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 2408 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 2409 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 2410 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 2411 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 2412 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 2413 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 2414 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON), 2415 LLVM_READOBJ_DT_FLAG_ENT(DF_1, PIE), 2416 }; 2417 2418 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 2419 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 2420 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 2421 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 2422 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 2423 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 2424 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 2425 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 2426 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 2427 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 2428 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 2429 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 2430 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 2431 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 2432 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 2433 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 2434 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 2435 }; 2436 2437 #undef LLVM_READOBJ_DT_FLAG_ENT 2438 2439 template <typename T, typename TFlag> 2440 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 2441 using FlagEntry = EnumEntry<TFlag>; 2442 using FlagVector = SmallVector<FlagEntry, 10>; 2443 FlagVector SetFlags; 2444 2445 for (const auto &Flag : Flags) { 2446 if (Flag.Value == 0) 2447 continue; 2448 2449 if ((Value & Flag.Value) == Flag.Value) 2450 SetFlags.push_back(Flag); 2451 } 2452 2453 for (const auto &Flag : SetFlags) { 2454 OS << Flag.Name << " "; 2455 } 2456 } 2457 2458 template <class ELFT> 2459 std::string ELFDumper<ELFT>::getDynamicEntry(uint64_t Type, 2460 uint64_t Value) const { 2461 auto FormatHexValue = [](uint64_t V) { 2462 std::string Str; 2463 raw_string_ostream OS(Str); 2464 const char *ConvChar = 2465 (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 2466 OS << format(ConvChar, V); 2467 return OS.str(); 2468 }; 2469 2470 auto FormatFlags = [](uint64_t V, 2471 llvm::ArrayRef<llvm::EnumEntry<unsigned int>> Array) { 2472 std::string Str; 2473 raw_string_ostream OS(Str); 2474 printFlags(V, Array, OS); 2475 return OS.str(); 2476 }; 2477 2478 // Handle custom printing of architecture specific tags 2479 switch (ObjF->getELFFile()->getHeader()->e_machine) { 2480 case EM_AARCH64: 2481 switch (Type) { 2482 case DT_AARCH64_BTI_PLT: 2483 case DT_AARCH64_PAC_PLT: 2484 return std::to_string(Value); 2485 default: 2486 break; 2487 } 2488 break; 2489 case EM_HEXAGON: 2490 switch (Type) { 2491 case DT_HEXAGON_VER: 2492 return std::to_string(Value); 2493 case DT_HEXAGON_SYMSZ: 2494 case DT_HEXAGON_PLT: 2495 return FormatHexValue(Value); 2496 default: 2497 break; 2498 } 2499 break; 2500 case EM_MIPS: 2501 switch (Type) { 2502 case DT_MIPS_RLD_VERSION: 2503 case DT_MIPS_LOCAL_GOTNO: 2504 case DT_MIPS_SYMTABNO: 2505 case DT_MIPS_UNREFEXTNO: 2506 return std::to_string(Value); 2507 case DT_MIPS_TIME_STAMP: 2508 case DT_MIPS_ICHECKSUM: 2509 case DT_MIPS_IVERSION: 2510 case DT_MIPS_BASE_ADDRESS: 2511 case DT_MIPS_MSYM: 2512 case DT_MIPS_CONFLICT: 2513 case DT_MIPS_LIBLIST: 2514 case DT_MIPS_CONFLICTNO: 2515 case DT_MIPS_LIBLISTNO: 2516 case DT_MIPS_GOTSYM: 2517 case DT_MIPS_HIPAGENO: 2518 case DT_MIPS_RLD_MAP: 2519 case DT_MIPS_DELTA_CLASS: 2520 case DT_MIPS_DELTA_CLASS_NO: 2521 case DT_MIPS_DELTA_INSTANCE: 2522 case DT_MIPS_DELTA_RELOC: 2523 case DT_MIPS_DELTA_RELOC_NO: 2524 case DT_MIPS_DELTA_SYM: 2525 case DT_MIPS_DELTA_SYM_NO: 2526 case DT_MIPS_DELTA_CLASSSYM: 2527 case DT_MIPS_DELTA_CLASSSYM_NO: 2528 case DT_MIPS_CXX_FLAGS: 2529 case DT_MIPS_PIXIE_INIT: 2530 case DT_MIPS_SYMBOL_LIB: 2531 case DT_MIPS_LOCALPAGE_GOTIDX: 2532 case DT_MIPS_LOCAL_GOTIDX: 2533 case DT_MIPS_HIDDEN_GOTIDX: 2534 case DT_MIPS_PROTECTED_GOTIDX: 2535 case DT_MIPS_OPTIONS: 2536 case DT_MIPS_INTERFACE: 2537 case DT_MIPS_DYNSTR_ALIGN: 2538 case DT_MIPS_INTERFACE_SIZE: 2539 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2540 case DT_MIPS_PERF_SUFFIX: 2541 case DT_MIPS_COMPACT_SIZE: 2542 case DT_MIPS_GP_VALUE: 2543 case DT_MIPS_AUX_DYNAMIC: 2544 case DT_MIPS_PLTGOT: 2545 case DT_MIPS_RWPLT: 2546 case DT_MIPS_RLD_MAP_REL: 2547 return FormatHexValue(Value); 2548 case DT_MIPS_FLAGS: 2549 return FormatFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags)); 2550 default: 2551 break; 2552 } 2553 break; 2554 default: 2555 break; 2556 } 2557 2558 switch (Type) { 2559 case DT_PLTREL: 2560 if (Value == DT_REL) 2561 return "REL"; 2562 if (Value == DT_RELA) 2563 return "RELA"; 2564 LLVM_FALLTHROUGH; 2565 case DT_PLTGOT: 2566 case DT_HASH: 2567 case DT_STRTAB: 2568 case DT_SYMTAB: 2569 case DT_RELA: 2570 case DT_INIT: 2571 case DT_FINI: 2572 case DT_REL: 2573 case DT_JMPREL: 2574 case DT_INIT_ARRAY: 2575 case DT_FINI_ARRAY: 2576 case DT_PREINIT_ARRAY: 2577 case DT_DEBUG: 2578 case DT_VERDEF: 2579 case DT_VERNEED: 2580 case DT_VERSYM: 2581 case DT_GNU_HASH: 2582 case DT_NULL: 2583 return FormatHexValue(Value); 2584 case DT_RELACOUNT: 2585 case DT_RELCOUNT: 2586 case DT_VERDEFNUM: 2587 case DT_VERNEEDNUM: 2588 return std::to_string(Value); 2589 case DT_PLTRELSZ: 2590 case DT_RELASZ: 2591 case DT_RELAENT: 2592 case DT_STRSZ: 2593 case DT_SYMENT: 2594 case DT_RELSZ: 2595 case DT_RELENT: 2596 case DT_INIT_ARRAYSZ: 2597 case DT_FINI_ARRAYSZ: 2598 case DT_PREINIT_ARRAYSZ: 2599 case DT_ANDROID_RELSZ: 2600 case DT_ANDROID_RELASZ: 2601 return std::to_string(Value) + " (bytes)"; 2602 case DT_NEEDED: 2603 case DT_SONAME: 2604 case DT_AUXILIARY: 2605 case DT_USED: 2606 case DT_FILTER: 2607 case DT_RPATH: 2608 case DT_RUNPATH: { 2609 const std::map<uint64_t, const char *> TagNames = { 2610 {DT_NEEDED, "Shared library"}, {DT_SONAME, "Library soname"}, 2611 {DT_AUXILIARY, "Auxiliary library"}, {DT_USED, "Not needed object"}, 2612 {DT_FILTER, "Filter library"}, {DT_RPATH, "Library rpath"}, 2613 {DT_RUNPATH, "Library runpath"}, 2614 }; 2615 2616 return (Twine(TagNames.at(Type)) + ": [" + getDynamicString(Value) + "]") 2617 .str(); 2618 } 2619 case DT_FLAGS: 2620 return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags)); 2621 case DT_FLAGS_1: 2622 return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags1)); 2623 default: 2624 return FormatHexValue(Value); 2625 } 2626 } 2627 2628 template <class ELFT> 2629 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 2630 if (DynamicStringTable.empty() && !DynamicStringTable.data()) { 2631 reportUniqueWarning(createError("string table was not found")); 2632 return "<?>"; 2633 } 2634 2635 auto WarnAndReturn = [this](const Twine &Msg, uint64_t Offset) { 2636 reportUniqueWarning(createError("string table at offset 0x" + 2637 Twine::utohexstr(Offset) + Msg)); 2638 return "<?>"; 2639 }; 2640 2641 const uint64_t FileSize = ObjF->getELFFile()->getBufSize(); 2642 const uint64_t Offset = 2643 (const uint8_t *)DynamicStringTable.data() - ObjF->getELFFile()->base(); 2644 if (DynamicStringTable.size() > FileSize - Offset) 2645 return WarnAndReturn(" with size 0x" + 2646 Twine::utohexstr(DynamicStringTable.size()) + 2647 " goes past the end of the file (0x" + 2648 Twine::utohexstr(FileSize) + ")", 2649 Offset); 2650 2651 if (Value >= DynamicStringTable.size()) 2652 return WarnAndReturn( 2653 ": unable to read the string at 0x" + Twine::utohexstr(Offset + Value) + 2654 ": it goes past the end of the table (0x" + 2655 Twine::utohexstr(Offset + DynamicStringTable.size()) + ")", 2656 Offset); 2657 2658 if (DynamicStringTable.back() != '\0') 2659 return WarnAndReturn(": unable to read the string at 0x" + 2660 Twine::utohexstr(Offset + Value) + 2661 ": the string table is not null-terminated", 2662 Offset); 2663 2664 return DynamicStringTable.data() + Value; 2665 } 2666 2667 template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() { 2668 DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF); 2669 Ctx.printUnwindInformation(); 2670 } 2671 2672 namespace { 2673 2674 template <> void ELFDumper<ELF32LE>::printUnwindInfo() { 2675 const ELFFile<ELF32LE> *Obj = ObjF->getELFFile(); 2676 const unsigned Machine = Obj->getHeader()->e_machine; 2677 if (Machine == EM_ARM) { 2678 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF->getFileName(), 2679 DotSymtabSec); 2680 Ctx.PrintUnwindInformation(); 2681 } 2682 DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF); 2683 Ctx.printUnwindInformation(); 2684 } 2685 2686 } // end anonymous namespace 2687 2688 template <class ELFT> void ELFDumper<ELFT>::printDynamicTable() { 2689 ELFDumperStyle->printDynamic(ObjF->getELFFile()); 2690 } 2691 2692 template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() { 2693 ListScope D(W, "NeededLibraries"); 2694 2695 std::vector<StringRef> Libs; 2696 for (const auto &Entry : dynamic_table()) 2697 if (Entry.d_tag == ELF::DT_NEEDED) 2698 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 2699 2700 llvm::sort(Libs); 2701 2702 for (StringRef L : Libs) 2703 W.startLine() << L << "\n"; 2704 } 2705 2706 template <class ELFT> 2707 static Error checkHashTable(const ELFFile<ELFT> *Obj, 2708 const typename ELFT::Hash *H, 2709 bool *IsHeaderValid = nullptr) { 2710 auto MakeError = [&](uint64_t Off, const Twine &Msg = "") { 2711 return createError("the hash table at offset 0x" + Twine::utohexstr(Off) + 2712 " goes past the end of the file (0x" + 2713 Twine::utohexstr(Obj->getBufSize()) + ")" + Msg); 2714 }; 2715 2716 // Each SHT_HASH section starts from two 32-bit fields: nbucket and nchain. 2717 const unsigned HeaderSize = 2 * sizeof(typename ELFT::Word); 2718 const uint64_t SecOffset = (const uint8_t *)H - Obj->base(); 2719 2720 if (IsHeaderValid) 2721 *IsHeaderValid = Obj->getBufSize() - SecOffset >= HeaderSize; 2722 2723 if (Obj->getBufSize() - SecOffset < HeaderSize) 2724 return MakeError(SecOffset); 2725 2726 if (Obj->getBufSize() - SecOffset - HeaderSize < 2727 ((uint64_t)H->nbucket + H->nchain) * sizeof(typename ELFT::Word)) 2728 return MakeError(SecOffset, ", nbucket = " + Twine(H->nbucket) + 2729 ", nchain = " + Twine(H->nchain)); 2730 return Error::success(); 2731 } 2732 2733 template <class ELFT> 2734 static Error checkGNUHashTable(const ELFFile<ELFT> *Obj, 2735 const typename ELFT::GnuHash *GnuHashTable, 2736 bool *IsHeaderValid = nullptr) { 2737 const uint8_t *TableData = reinterpret_cast<const uint8_t *>(GnuHashTable); 2738 assert(TableData >= Obj->base() && 2739 TableData < Obj->base() + Obj->getBufSize() && 2740 "GnuHashTable must always point to a location inside the file"); 2741 2742 uint64_t TableOffset = TableData - Obj->base(); 2743 if (IsHeaderValid) 2744 *IsHeaderValid = TableOffset + /*Header size:*/ 16 < Obj->getBufSize(); 2745 if (TableOffset + 16 + (uint64_t)GnuHashTable->nbuckets * 4 + 2746 (uint64_t)GnuHashTable->maskwords * sizeof(typename ELFT::Off) >= 2747 Obj->getBufSize()) 2748 return createError("unable to dump the SHT_GNU_HASH " 2749 "section at 0x" + 2750 Twine::utohexstr(TableOffset) + 2751 ": it goes past the end of the file"); 2752 return Error::success(); 2753 } 2754 2755 template <typename ELFT> void ELFDumper<ELFT>::printHashTable() { 2756 DictScope D(W, "HashTable"); 2757 if (!HashTable) 2758 return; 2759 2760 bool IsHeaderValid; 2761 Error Err = checkHashTable(ObjF->getELFFile(), HashTable, &IsHeaderValid); 2762 if (IsHeaderValid) { 2763 W.printNumber("Num Buckets", HashTable->nbucket); 2764 W.printNumber("Num Chains", HashTable->nchain); 2765 } 2766 2767 if (Err) { 2768 reportUniqueWarning(std::move(Err)); 2769 return; 2770 } 2771 2772 W.printList("Buckets", HashTable->buckets()); 2773 W.printList("Chains", HashTable->chains()); 2774 } 2775 2776 template <class ELFT> 2777 static Expected<ArrayRef<typename ELFT::Word>> 2778 getGnuHashTableChains(Optional<DynRegionInfo> DynSymRegion, 2779 const typename ELFT::GnuHash *GnuHashTable) { 2780 if (!DynSymRegion) 2781 return createError("no dynamic symbol table found"); 2782 2783 ArrayRef<typename ELFT::Sym> DynSymTable = 2784 DynSymRegion->getAsArrayRef<typename ELFT::Sym>(); 2785 size_t NumSyms = DynSymTable.size(); 2786 if (!NumSyms) 2787 return createError("the dynamic symbol table is empty"); 2788 2789 if (GnuHashTable->symndx < NumSyms) 2790 return GnuHashTable->values(NumSyms); 2791 2792 // A normal empty GNU hash table section produced by linker might have 2793 // symndx set to the number of dynamic symbols + 1 (for the zero symbol) 2794 // and have dummy null values in the Bloom filter and in the buckets 2795 // vector (or no values at all). It happens because the value of symndx is not 2796 // important for dynamic loaders when the GNU hash table is empty. They just 2797 // skip the whole object during symbol lookup. In such cases, the symndx value 2798 // is irrelevant and we should not report a warning. 2799 ArrayRef<typename ELFT::Word> Buckets = GnuHashTable->buckets(); 2800 if (!llvm::all_of(Buckets, [](typename ELFT::Word V) { return V == 0; })) 2801 return createError("the first hashed symbol index (" + 2802 Twine(GnuHashTable->symndx) + 2803 ") is larger than the number of dynamic symbols (" + 2804 Twine(NumSyms) + ")"); 2805 // There is no way to represent an array of (dynamic symbols count - symndx) 2806 // length. 2807 return ArrayRef<typename ELFT::Word>(); 2808 } 2809 2810 template <typename ELFT> 2811 void ELFDumper<ELFT>::printGnuHashTable(const object::ObjectFile *Obj) { 2812 DictScope D(W, "GnuHashTable"); 2813 if (!GnuHashTable) 2814 return; 2815 2816 bool IsHeaderValid; 2817 Error Err = 2818 checkGNUHashTable<ELFT>(ObjF->getELFFile(), GnuHashTable, &IsHeaderValid); 2819 if (IsHeaderValid) { 2820 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 2821 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 2822 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 2823 W.printNumber("Shift Count", GnuHashTable->shift2); 2824 } 2825 2826 if (Err) { 2827 reportUniqueWarning(std::move(Err)); 2828 return; 2829 } 2830 2831 ArrayRef<typename ELFT::Off> BloomFilter = GnuHashTable->filter(); 2832 W.printHexList("Bloom Filter", BloomFilter); 2833 2834 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 2835 W.printList("Buckets", Buckets); 2836 2837 Expected<ArrayRef<Elf_Word>> Chains = 2838 getGnuHashTableChains<ELFT>(DynSymRegion, GnuHashTable); 2839 if (!Chains) { 2840 reportUniqueWarning( 2841 createError("unable to dump 'Values' for the SHT_GNU_HASH " 2842 "section: " + 2843 toString(Chains.takeError()))); 2844 return; 2845 } 2846 2847 W.printHexList("Values", *Chains); 2848 } 2849 2850 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 2851 W.printString("LoadName", SOName); 2852 } 2853 2854 template <class ELFT> void ELFDumper<ELFT>::printArchSpecificInfo() { 2855 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 2856 switch (Obj->getHeader()->e_machine) { 2857 case EM_ARM: 2858 case EM_RISCV: 2859 printAttributes(); 2860 break; 2861 case EM_MIPS: { 2862 ELFDumperStyle->printMipsABIFlags(ObjF); 2863 printMipsOptions(); 2864 printMipsReginfo(); 2865 2866 MipsGOTParser<ELFT> Parser(Obj, ObjF->getFileName(), dynamic_table(), 2867 dynamic_symbols()); 2868 if (Error E = Parser.findGOT(dynamic_table(), dynamic_symbols())) 2869 reportError(std::move(E), ObjF->getFileName()); 2870 else if (!Parser.isGotEmpty()) 2871 ELFDumperStyle->printMipsGOT(Parser); 2872 2873 if (Error E = Parser.findPLT(dynamic_table())) 2874 reportError(std::move(E), ObjF->getFileName()); 2875 else if (!Parser.isPltEmpty()) 2876 ELFDumperStyle->printMipsPLT(Parser); 2877 break; 2878 } 2879 default: 2880 break; 2881 } 2882 } 2883 2884 namespace { 2885 2886 template <class ELFT> void ELFDumper<ELFT>::printAttributes() { 2887 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 2888 if (!Obj->isLE()) { 2889 W.startLine() << "Attributes not implemented.\n"; 2890 return; 2891 } 2892 2893 const unsigned Machine = Obj->getHeader()->e_machine; 2894 assert((Machine == EM_ARM || Machine == EM_RISCV) && 2895 "Attributes not implemented."); 2896 2897 DictScope BA(W, "BuildAttributes"); 2898 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 2899 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES && 2900 Sec.sh_type != ELF::SHT_RISCV_ATTRIBUTES) 2901 continue; 2902 2903 ArrayRef<uint8_t> Contents = 2904 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(&Sec)); 2905 if (Contents[0] != ELFAttrs::Format_Version) { 2906 reportWarning(createError(Twine("unrecognised FormatVersion: 0x") + 2907 Twine::utohexstr(Contents[0])), 2908 ObjF->getFileName()); 2909 continue; 2910 } 2911 W.printHex("FormatVersion", Contents[0]); 2912 if (Contents.size() == 1) 2913 continue; 2914 2915 // TODO: Delete the redundant FormatVersion check above. 2916 if (Machine == EM_ARM) { 2917 if (Error E = ARMAttributeParser(&W).parse(Contents, support::little)) 2918 reportWarning(std::move(E), ObjF->getFileName()); 2919 } else if (Machine == EM_RISCV) { 2920 if (Error E = RISCVAttributeParser(&W).parse(Contents, support::little)) 2921 reportWarning(std::move(E), ObjF->getFileName()); 2922 } 2923 } 2924 } 2925 2926 template <class ELFT> class MipsGOTParser { 2927 public: 2928 TYPEDEF_ELF_TYPES(ELFT) 2929 using Entry = typename ELFO::Elf_Addr; 2930 using Entries = ArrayRef<Entry>; 2931 2932 const bool IsStatic; 2933 const ELFO * const Obj; 2934 2935 MipsGOTParser(const ELFO *Obj, StringRef FileName, Elf_Dyn_Range DynTable, 2936 Elf_Sym_Range DynSyms); 2937 Error findGOT(Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); 2938 Error findPLT(Elf_Dyn_Range DynTable); 2939 2940 bool isGotEmpty() const { return GotEntries.empty(); } 2941 bool isPltEmpty() const { return PltEntries.empty(); } 2942 2943 uint64_t getGp() const; 2944 2945 const Entry *getGotLazyResolver() const; 2946 const Entry *getGotModulePointer() const; 2947 const Entry *getPltLazyResolver() const; 2948 const Entry *getPltModulePointer() const; 2949 2950 Entries getLocalEntries() const; 2951 Entries getGlobalEntries() const; 2952 Entries getOtherEntries() const; 2953 Entries getPltEntries() const; 2954 2955 uint64_t getGotAddress(const Entry * E) const; 2956 int64_t getGotOffset(const Entry * E) const; 2957 const Elf_Sym *getGotSym(const Entry *E) const; 2958 2959 uint64_t getPltAddress(const Entry * E) const; 2960 const Elf_Sym *getPltSym(const Entry *E) const; 2961 2962 StringRef getPltStrTable() const { return PltStrTable; } 2963 2964 private: 2965 const Elf_Shdr *GotSec; 2966 size_t LocalNum; 2967 size_t GlobalNum; 2968 2969 const Elf_Shdr *PltSec; 2970 const Elf_Shdr *PltRelSec; 2971 const Elf_Shdr *PltSymTable; 2972 StringRef FileName; 2973 2974 Elf_Sym_Range GotDynSyms; 2975 StringRef PltStrTable; 2976 2977 Entries GotEntries; 2978 Entries PltEntries; 2979 }; 2980 2981 } // end anonymous namespace 2982 2983 template <class ELFT> 2984 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, StringRef FileName, 2985 Elf_Dyn_Range DynTable, 2986 Elf_Sym_Range DynSyms) 2987 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0), 2988 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr), 2989 FileName(FileName) {} 2990 2991 template <class ELFT> 2992 Error MipsGOTParser<ELFT>::findGOT(Elf_Dyn_Range DynTable, 2993 Elf_Sym_Range DynSyms) { 2994 // See "Global Offset Table" in Chapter 5 in the following document 2995 // for detailed GOT description. 2996 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 2997 2998 // Find static GOT secton. 2999 if (IsStatic) { 3000 GotSec = findSectionByName(*Obj, FileName, ".got"); 3001 if (!GotSec) 3002 return Error::success(); 3003 3004 ArrayRef<uint8_t> Content = 3005 unwrapOrError(FileName, Obj->getSectionContents(GotSec)); 3006 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 3007 Content.size() / sizeof(Entry)); 3008 LocalNum = GotEntries.size(); 3009 return Error::success(); 3010 } 3011 3012 // Lookup dynamic table tags which define the GOT layout. 3013 Optional<uint64_t> DtPltGot; 3014 Optional<uint64_t> DtLocalGotNum; 3015 Optional<uint64_t> DtGotSym; 3016 for (const auto &Entry : DynTable) { 3017 switch (Entry.getTag()) { 3018 case ELF::DT_PLTGOT: 3019 DtPltGot = Entry.getVal(); 3020 break; 3021 case ELF::DT_MIPS_LOCAL_GOTNO: 3022 DtLocalGotNum = Entry.getVal(); 3023 break; 3024 case ELF::DT_MIPS_GOTSYM: 3025 DtGotSym = Entry.getVal(); 3026 break; 3027 } 3028 } 3029 3030 if (!DtPltGot && !DtLocalGotNum && !DtGotSym) 3031 return Error::success(); 3032 3033 if (!DtPltGot) 3034 return createError("cannot find PLTGOT dynamic tag"); 3035 if (!DtLocalGotNum) 3036 return createError("cannot find MIPS_LOCAL_GOTNO dynamic tag"); 3037 if (!DtGotSym) 3038 return createError("cannot find MIPS_GOTSYM dynamic tag"); 3039 3040 size_t DynSymTotal = DynSyms.size(); 3041 if (*DtGotSym > DynSymTotal) 3042 return createError("MIPS_GOTSYM exceeds a number of dynamic symbols"); 3043 3044 GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot); 3045 if (!GotSec) 3046 return createError("there is no non-empty GOT section at 0x" + 3047 Twine::utohexstr(*DtPltGot)); 3048 3049 LocalNum = *DtLocalGotNum; 3050 GlobalNum = DynSymTotal - *DtGotSym; 3051 3052 ArrayRef<uint8_t> Content = 3053 unwrapOrError(FileName, Obj->getSectionContents(GotSec)); 3054 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 3055 Content.size() / sizeof(Entry)); 3056 GotDynSyms = DynSyms.drop_front(*DtGotSym); 3057 3058 return Error::success(); 3059 } 3060 3061 template <class ELFT> 3062 Error MipsGOTParser<ELFT>::findPLT(Elf_Dyn_Range DynTable) { 3063 // Lookup dynamic table tags which define the PLT layout. 3064 Optional<uint64_t> DtMipsPltGot; 3065 Optional<uint64_t> DtJmpRel; 3066 for (const auto &Entry : DynTable) { 3067 switch (Entry.getTag()) { 3068 case ELF::DT_MIPS_PLTGOT: 3069 DtMipsPltGot = Entry.getVal(); 3070 break; 3071 case ELF::DT_JMPREL: 3072 DtJmpRel = Entry.getVal(); 3073 break; 3074 } 3075 } 3076 3077 if (!DtMipsPltGot && !DtJmpRel) 3078 return Error::success(); 3079 3080 // Find PLT section. 3081 if (!DtMipsPltGot) 3082 return createError("cannot find MIPS_PLTGOT dynamic tag"); 3083 if (!DtJmpRel) 3084 return createError("cannot find JMPREL dynamic tag"); 3085 3086 PltSec = findNotEmptySectionByAddress(Obj, FileName, *DtMipsPltGot); 3087 if (!PltSec) 3088 return createError("there is no non-empty PLTGOT section at 0x" + 3089 Twine::utohexstr(*DtMipsPltGot)); 3090 3091 PltRelSec = findNotEmptySectionByAddress(Obj, FileName, *DtJmpRel); 3092 if (!PltRelSec) 3093 return createError("there is no non-empty RELPLT section at 0x" + 3094 Twine::utohexstr(*DtJmpRel)); 3095 3096 ArrayRef<uint8_t> PltContent = 3097 unwrapOrError(FileName, Obj->getSectionContents(PltSec)); 3098 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()), 3099 PltContent.size() / sizeof(Entry)); 3100 3101 PltSymTable = unwrapOrError(FileName, Obj->getSection(PltRelSec->sh_link)); 3102 PltStrTable = 3103 unwrapOrError(FileName, Obj->getStringTableForSymtab(*PltSymTable)); 3104 3105 return Error::success(); 3106 } 3107 3108 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 3109 return GotSec->sh_addr + 0x7ff0; 3110 } 3111 3112 template <class ELFT> 3113 const typename MipsGOTParser<ELFT>::Entry * 3114 MipsGOTParser<ELFT>::getGotLazyResolver() const { 3115 return LocalNum > 0 ? &GotEntries[0] : nullptr; 3116 } 3117 3118 template <class ELFT> 3119 const typename MipsGOTParser<ELFT>::Entry * 3120 MipsGOTParser<ELFT>::getGotModulePointer() const { 3121 if (LocalNum < 2) 3122 return nullptr; 3123 const Entry &E = GotEntries[1]; 3124 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 3125 return nullptr; 3126 return &E; 3127 } 3128 3129 template <class ELFT> 3130 typename MipsGOTParser<ELFT>::Entries 3131 MipsGOTParser<ELFT>::getLocalEntries() const { 3132 size_t Skip = getGotModulePointer() ? 2 : 1; 3133 if (LocalNum - Skip <= 0) 3134 return Entries(); 3135 return GotEntries.slice(Skip, LocalNum - Skip); 3136 } 3137 3138 template <class ELFT> 3139 typename MipsGOTParser<ELFT>::Entries 3140 MipsGOTParser<ELFT>::getGlobalEntries() const { 3141 if (GlobalNum == 0) 3142 return Entries(); 3143 return GotEntries.slice(LocalNum, GlobalNum); 3144 } 3145 3146 template <class ELFT> 3147 typename MipsGOTParser<ELFT>::Entries 3148 MipsGOTParser<ELFT>::getOtherEntries() const { 3149 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 3150 if (OtherNum == 0) 3151 return Entries(); 3152 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 3153 } 3154 3155 template <class ELFT> 3156 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 3157 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 3158 return GotSec->sh_addr + Offset; 3159 } 3160 3161 template <class ELFT> 3162 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 3163 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 3164 return Offset - 0x7ff0; 3165 } 3166 3167 template <class ELFT> 3168 const typename MipsGOTParser<ELFT>::Elf_Sym * 3169 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 3170 int64_t Offset = std::distance(GotEntries.data(), E); 3171 return &GotDynSyms[Offset - LocalNum]; 3172 } 3173 3174 template <class ELFT> 3175 const typename MipsGOTParser<ELFT>::Entry * 3176 MipsGOTParser<ELFT>::getPltLazyResolver() const { 3177 return PltEntries.empty() ? nullptr : &PltEntries[0]; 3178 } 3179 3180 template <class ELFT> 3181 const typename MipsGOTParser<ELFT>::Entry * 3182 MipsGOTParser<ELFT>::getPltModulePointer() const { 3183 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 3184 } 3185 3186 template <class ELFT> 3187 typename MipsGOTParser<ELFT>::Entries 3188 MipsGOTParser<ELFT>::getPltEntries() const { 3189 if (PltEntries.size() <= 2) 3190 return Entries(); 3191 return PltEntries.slice(2, PltEntries.size() - 2); 3192 } 3193 3194 template <class ELFT> 3195 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 3196 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 3197 return PltSec->sh_addr + Offset; 3198 } 3199 3200 template <class ELFT> 3201 const typename MipsGOTParser<ELFT>::Elf_Sym * 3202 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 3203 int64_t Offset = std::distance(getPltEntries().data(), E); 3204 if (PltRelSec->sh_type == ELF::SHT_REL) { 3205 Elf_Rel_Range Rels = unwrapOrError(FileName, Obj->rels(PltRelSec)); 3206 return unwrapOrError(FileName, 3207 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 3208 } else { 3209 Elf_Rela_Range Rels = unwrapOrError(FileName, Obj->relas(PltRelSec)); 3210 return unwrapOrError(FileName, 3211 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 3212 } 3213 } 3214 3215 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 3216 {"None", Mips::AFL_EXT_NONE}, 3217 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 3218 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 3219 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 3220 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 3221 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 3222 {"LSI R4010", Mips::AFL_EXT_4010}, 3223 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 3224 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 3225 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 3226 {"MIPS R4650", Mips::AFL_EXT_4650}, 3227 {"MIPS R5900", Mips::AFL_EXT_5900}, 3228 {"MIPS R10000", Mips::AFL_EXT_10000}, 3229 {"NEC VR4100", Mips::AFL_EXT_4100}, 3230 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 3231 {"NEC VR4120", Mips::AFL_EXT_4120}, 3232 {"NEC VR5400", Mips::AFL_EXT_5400}, 3233 {"NEC VR5500", Mips::AFL_EXT_5500}, 3234 {"RMI Xlr", Mips::AFL_EXT_XLR}, 3235 {"Toshiba R3900", Mips::AFL_EXT_3900} 3236 }; 3237 3238 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 3239 {"DSP", Mips::AFL_ASE_DSP}, 3240 {"DSPR2", Mips::AFL_ASE_DSPR2}, 3241 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 3242 {"MCU", Mips::AFL_ASE_MCU}, 3243 {"MDMX", Mips::AFL_ASE_MDMX}, 3244 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 3245 {"MT", Mips::AFL_ASE_MT}, 3246 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 3247 {"VZ", Mips::AFL_ASE_VIRT}, 3248 {"MSA", Mips::AFL_ASE_MSA}, 3249 {"MIPS16", Mips::AFL_ASE_MIPS16}, 3250 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 3251 {"XPA", Mips::AFL_ASE_XPA}, 3252 {"CRC", Mips::AFL_ASE_CRC}, 3253 {"GINV", Mips::AFL_ASE_GINV}, 3254 }; 3255 3256 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 3257 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 3258 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 3259 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 3260 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 3261 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 3262 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 3263 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 3264 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 3265 {"Hard float compat (32-bit CPU, 64-bit FPU)", 3266 Mips::Val_GNU_MIPS_ABI_FP_64A} 3267 }; 3268 3269 static const EnumEntry<unsigned> ElfMipsFlags1[] { 3270 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 3271 }; 3272 3273 static int getMipsRegisterSize(uint8_t Flag) { 3274 switch (Flag) { 3275 case Mips::AFL_REG_NONE: 3276 return 0; 3277 case Mips::AFL_REG_32: 3278 return 32; 3279 case Mips::AFL_REG_64: 3280 return 64; 3281 case Mips::AFL_REG_128: 3282 return 128; 3283 default: 3284 return -1; 3285 } 3286 } 3287 3288 template <class ELFT> 3289 static void printMipsReginfoData(ScopedPrinter &W, 3290 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 3291 W.printHex("GP", Reginfo.ri_gp_value); 3292 W.printHex("General Mask", Reginfo.ri_gprmask); 3293 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 3294 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 3295 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 3296 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 3297 } 3298 3299 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 3300 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3301 const Elf_Shdr *Shdr = findSectionByName(*Obj, ObjF->getFileName(), ".reginfo"); 3302 if (!Shdr) { 3303 W.startLine() << "There is no .reginfo section in the file.\n"; 3304 return; 3305 } 3306 ArrayRef<uint8_t> Sec = 3307 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 3308 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 3309 W.startLine() << "The .reginfo section has a wrong size.\n"; 3310 return; 3311 } 3312 3313 DictScope GS(W, "MIPS RegInfo"); 3314 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 3315 printMipsReginfoData(W, *Reginfo); 3316 } 3317 3318 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 3319 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3320 const Elf_Shdr *Shdr = 3321 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.options"); 3322 if (!Shdr) { 3323 W.startLine() << "There is no .MIPS.options section in the file.\n"; 3324 return; 3325 } 3326 3327 DictScope GS(W, "MIPS Options"); 3328 3329 ArrayRef<uint8_t> Sec = 3330 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 3331 while (!Sec.empty()) { 3332 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 3333 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 3334 return; 3335 } 3336 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 3337 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 3338 switch (O->kind) { 3339 case ODK_REGINFO: 3340 printMipsReginfoData(W, O->getRegInfo()); 3341 break; 3342 default: 3343 W.startLine() << "Unsupported MIPS options tag.\n"; 3344 break; 3345 } 3346 Sec = Sec.slice(O->size); 3347 } 3348 } 3349 3350 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 3351 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3352 const Elf_Shdr *StackMapSection = nullptr; 3353 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3354 StringRef Name = 3355 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec)); 3356 if (Name == ".llvm_stackmaps") { 3357 StackMapSection = &Sec; 3358 break; 3359 } 3360 } 3361 3362 if (!StackMapSection) 3363 return; 3364 3365 ArrayRef<uint8_t> StackMapContentsArray = unwrapOrError( 3366 ObjF->getFileName(), Obj->getSectionContents(StackMapSection)); 3367 3368 prettyPrintStackMap( 3369 W, StackMapParser<ELFT::TargetEndianness>(StackMapContentsArray)); 3370 } 3371 3372 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 3373 ELFDumperStyle->printGroupSections(ObjF->getELFFile()); 3374 } 3375 3376 template <class ELFT> void ELFDumper<ELFT>::printAddrsig() { 3377 ELFDumperStyle->printAddrsig(ObjF->getELFFile()); 3378 } 3379 3380 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 3381 StringRef Str2) { 3382 OS.PadToColumn(2u); 3383 OS << Str1; 3384 OS.PadToColumn(37u); 3385 OS << Str2 << "\n"; 3386 OS.flush(); 3387 } 3388 3389 template <class ELFT> 3390 static std::string getSectionHeadersNumString(const ELFFile<ELFT> *Obj, 3391 StringRef FileName) { 3392 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader(); 3393 if (ElfHeader->e_shnum != 0) 3394 return to_string(ElfHeader->e_shnum); 3395 3396 ArrayRef<typename ELFT::Shdr> Arr = cantFail(Obj->sections()); 3397 if (Arr.empty()) 3398 return "0"; 3399 return "0 (" + to_string(Arr[0].sh_size) + ")"; 3400 } 3401 3402 template <class ELFT> 3403 static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj, 3404 StringRef FileName) { 3405 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader(); 3406 if (ElfHeader->e_shstrndx != SHN_XINDEX) 3407 return to_string(ElfHeader->e_shstrndx); 3408 3409 ArrayRef<typename ELFT::Shdr> Arr = cantFail(Obj->sections()); 3410 if (Arr.empty()) 3411 return "65535 (corrupt: out of range)"; 3412 return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) + 3413 ")"; 3414 } 3415 3416 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3417 const Elf_Ehdr *e = Obj->getHeader(); 3418 OS << "ELF Header:\n"; 3419 OS << " Magic: "; 3420 std::string Str; 3421 for (int i = 0; i < ELF::EI_NIDENT; i++) 3422 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 3423 OS << "\n"; 3424 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3425 printFields(OS, "Class:", Str); 3426 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 3427 printFields(OS, "Data:", Str); 3428 OS.PadToColumn(2u); 3429 OS << "Version:"; 3430 OS.PadToColumn(37u); 3431 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 3432 if (e->e_version == ELF::EV_CURRENT) 3433 OS << " (current)"; 3434 OS << "\n"; 3435 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 3436 printFields(OS, "OS/ABI:", Str); 3437 printFields(OS, 3438 "ABI Version:", std::to_string(e->e_ident[ELF::EI_ABIVERSION])); 3439 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 3440 printFields(OS, "Type:", Str); 3441 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 3442 printFields(OS, "Machine:", Str); 3443 Str = "0x" + to_hexString(e->e_version); 3444 printFields(OS, "Version:", Str); 3445 Str = "0x" + to_hexString(e->e_entry); 3446 printFields(OS, "Entry point address:", Str); 3447 Str = to_string(e->e_phoff) + " (bytes into file)"; 3448 printFields(OS, "Start of program headers:", Str); 3449 Str = to_string(e->e_shoff) + " (bytes into file)"; 3450 printFields(OS, "Start of section headers:", Str); 3451 std::string ElfFlags; 3452 if (e->e_machine == EM_MIPS) 3453 ElfFlags = 3454 printFlags(e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3455 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3456 unsigned(ELF::EF_MIPS_MACH)); 3457 else if (e->e_machine == EM_RISCV) 3458 ElfFlags = printFlags(e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3459 Str = "0x" + to_hexString(e->e_flags); 3460 if (!ElfFlags.empty()) 3461 Str = Str + ", " + ElfFlags; 3462 printFields(OS, "Flags:", Str); 3463 Str = to_string(e->e_ehsize) + " (bytes)"; 3464 printFields(OS, "Size of this header:", Str); 3465 Str = to_string(e->e_phentsize) + " (bytes)"; 3466 printFields(OS, "Size of program headers:", Str); 3467 Str = to_string(e->e_phnum); 3468 printFields(OS, "Number of program headers:", Str); 3469 Str = to_string(e->e_shentsize) + " (bytes)"; 3470 printFields(OS, "Size of section headers:", Str); 3471 Str = getSectionHeadersNumString(Obj, this->FileName); 3472 printFields(OS, "Number of section headers:", Str); 3473 Str = getSectionHeaderTableIndexString(Obj, this->FileName); 3474 printFields(OS, "Section header string table index:", Str); 3475 } 3476 3477 namespace { 3478 struct GroupMember { 3479 StringRef Name; 3480 uint64_t Index; 3481 }; 3482 3483 struct GroupSection { 3484 StringRef Name; 3485 std::string Signature; 3486 uint64_t ShName; 3487 uint64_t Index; 3488 uint32_t Link; 3489 uint32_t Info; 3490 uint32_t Type; 3491 std::vector<GroupMember> Members; 3492 }; 3493 3494 template <class ELFT> 3495 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj, 3496 StringRef FileName) { 3497 using Elf_Shdr = typename ELFT::Shdr; 3498 using Elf_Sym = typename ELFT::Sym; 3499 using Elf_Word = typename ELFT::Word; 3500 3501 std::vector<GroupSection> Ret; 3502 uint64_t I = 0; 3503 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3504 ++I; 3505 if (Sec.sh_type != ELF::SHT_GROUP) 3506 continue; 3507 3508 const Elf_Shdr *Symtab = 3509 unwrapOrError(FileName, Obj->getSection(Sec.sh_link)); 3510 StringRef StrTable = 3511 unwrapOrError(FileName, Obj->getStringTableForSymtab(*Symtab)); 3512 const Elf_Sym *Sym = unwrapOrError( 3513 FileName, Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 3514 auto Data = unwrapOrError( 3515 FileName, Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 3516 3517 StringRef Name = unwrapOrError(FileName, Obj->getSectionName(&Sec)); 3518 StringRef Signature = StrTable.data() + Sym->st_name; 3519 Ret.push_back({Name, 3520 maybeDemangle(Signature), 3521 Sec.sh_name, 3522 I - 1, 3523 Sec.sh_link, 3524 Sec.sh_info, 3525 Data[0], 3526 {}}); 3527 3528 std::vector<GroupMember> &GM = Ret.back().Members; 3529 for (uint32_t Ndx : Data.slice(1)) { 3530 auto Sec = unwrapOrError(FileName, Obj->getSection(Ndx)); 3531 const StringRef Name = unwrapOrError(FileName, Obj->getSectionName(Sec)); 3532 GM.push_back({Name, Ndx}); 3533 } 3534 } 3535 return Ret; 3536 } 3537 3538 DenseMap<uint64_t, const GroupSection *> 3539 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 3540 DenseMap<uint64_t, const GroupSection *> Ret; 3541 for (const GroupSection &G : Groups) 3542 for (const GroupMember &GM : G.Members) 3543 Ret.insert({GM.Index, &G}); 3544 return Ret; 3545 } 3546 3547 } // namespace 3548 3549 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3550 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName); 3551 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3552 for (const GroupSection &G : V) { 3553 OS << "\n" 3554 << getGroupType(G.Type) << " group section [" 3555 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 3556 << "] contains " << G.Members.size() << " sections:\n" 3557 << " [Index] Name\n"; 3558 for (const GroupMember &GM : G.Members) { 3559 const GroupSection *MainGroup = Map[GM.Index]; 3560 if (MainGroup != &G) { 3561 OS.flush(); 3562 errs() << "Error: section [" << format_decimal(GM.Index, 5) 3563 << "] in group section [" << format_decimal(G.Index, 5) 3564 << "] already in group section [" 3565 << format_decimal(MainGroup->Index, 5) << "]"; 3566 errs().flush(); 3567 continue; 3568 } 3569 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 3570 } 3571 } 3572 3573 if (V.empty()) 3574 OS << "There are no section groups in this file.\n"; 3575 } 3576 3577 template <class ELFT> 3578 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, unsigned SecIndex, 3579 const Elf_Shdr *SymTab, const Elf_Rela &R, 3580 unsigned RelIndex, bool IsRela) { 3581 Expected<std::pair<const typename ELFT::Sym *, std::string>> Target = 3582 this->dumper()->getRelocationTarget(SymTab, R); 3583 if (!Target) 3584 this->reportUniqueWarning(createError( 3585 "unable to print relocation " + Twine(RelIndex) + " in section " + 3586 Twine(SecIndex) + ": " + toString(Target.takeError()))); 3587 else 3588 printRelocation(Obj, /*Sym=*/Target->first, /*Name=*/Target->second, R, 3589 IsRela); 3590 } 3591 3592 template <class ELFT> 3593 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Sym *Sym, 3594 StringRef SymbolName, const Elf_Rela &R, 3595 bool IsRela) { 3596 // First two fields are bit width dependent. The rest of them are fixed width. 3597 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3598 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3599 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3600 3601 Fields[0].Str = to_string(format_hex_no_prefix(R.r_offset, Width)); 3602 Fields[1].Str = to_string(format_hex_no_prefix(R.r_info, Width)); 3603 3604 SmallString<32> RelocName; 3605 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3606 Fields[2].Str = RelocName.c_str(); 3607 3608 if (Sym) 3609 Fields[3].Str = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3610 3611 Fields[4].Str = std::string(SymbolName); 3612 for (const Field &F : Fields) 3613 printField(F); 3614 3615 std::string Addend; 3616 if (IsRela) { 3617 int64_t RelAddend = R.r_addend; 3618 if (!SymbolName.empty()) { 3619 if (R.r_addend < 0) { 3620 Addend = " - "; 3621 RelAddend = std::abs(RelAddend); 3622 } else 3623 Addend = " + "; 3624 } 3625 3626 Addend += to_hexString(RelAddend, false); 3627 } 3628 OS << Addend << "\n"; 3629 } 3630 3631 template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) { 3632 bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA; 3633 bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR; 3634 if (ELFT::Is64Bits) 3635 OS << " "; 3636 else 3637 OS << " "; 3638 if (IsRelr && opts::RawRelr) 3639 OS << "Data "; 3640 else 3641 OS << "Offset"; 3642 if (ELFT::Is64Bits) 3643 OS << " Info Type" 3644 << " Symbol's Value Symbol's Name"; 3645 else 3646 OS << " Info Type Sym. Value Symbol's Name"; 3647 if (IsRela) 3648 OS << " + Addend"; 3649 OS << "\n"; 3650 } 3651 3652 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 3653 bool HasRelocSections = false; 3654 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3655 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3656 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL && 3657 Sec.sh_type != ELF::SHT_ANDROID_RELA && 3658 Sec.sh_type != ELF::SHT_ANDROID_RELR) 3659 continue; 3660 HasRelocSections = true; 3661 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec)); 3662 unsigned Entries = Sec.getEntityCount(); 3663 std::vector<Elf_Rela> AndroidRelas; 3664 if (Sec.sh_type == ELF::SHT_ANDROID_REL || 3665 Sec.sh_type == ELF::SHT_ANDROID_RELA) { 3666 // Android's packed relocation section needs to be unpacked first 3667 // to get the actual number of entries. 3668 AndroidRelas = unwrapOrError(this->FileName, Obj->android_relas(&Sec)); 3669 Entries = AndroidRelas.size(); 3670 } 3671 std::vector<Elf_Rela> RelrRelas; 3672 if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR || 3673 Sec.sh_type == ELF::SHT_ANDROID_RELR)) { 3674 // .relr.dyn relative relocation section needs to be unpacked first 3675 // to get the actual number of entries. 3676 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(&Sec)); 3677 RelrRelas = unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 3678 Entries = RelrRelas.size(); 3679 } 3680 uintX_t Offset = Sec.sh_offset; 3681 OS << "\nRelocation section '" << Name << "' at offset 0x" 3682 << to_hexString(Offset, false) << " contains " << Entries 3683 << " entries:\n"; 3684 printRelocHeader(Sec.sh_type); 3685 const Elf_Shdr *SymTab = 3686 unwrapOrError(this->FileName, Obj->getSection(Sec.sh_link)); 3687 unsigned SecNdx = &Sec - &cantFail(Obj->sections()).front(); 3688 unsigned RelNdx = 0; 3689 3690 switch (Sec.sh_type) { 3691 case ELF::SHT_REL: 3692 for (const auto &R : unwrapOrError(this->FileName, Obj->rels(&Sec))) { 3693 Elf_Rela Rela; 3694 Rela.r_offset = R.r_offset; 3695 Rela.r_info = R.r_info; 3696 Rela.r_addend = 0; 3697 printRelocation(Obj, SecNdx, SymTab, Rela, ++RelNdx, false); 3698 } 3699 break; 3700 case ELF::SHT_RELA: 3701 for (const auto &R : unwrapOrError(this->FileName, Obj->relas(&Sec))) 3702 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, true); 3703 break; 3704 case ELF::SHT_RELR: 3705 case ELF::SHT_ANDROID_RELR: 3706 if (opts::RawRelr) 3707 for (const auto &R : unwrapOrError(this->FileName, Obj->relrs(&Sec))) 3708 OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) 3709 << "\n"; 3710 else 3711 for (const auto &R : RelrRelas) 3712 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, false); 3713 break; 3714 case ELF::SHT_ANDROID_REL: 3715 case ELF::SHT_ANDROID_RELA: 3716 for (const auto &R : AndroidRelas) 3717 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, 3718 Sec.sh_type == ELF::SHT_ANDROID_RELA); 3719 break; 3720 } 3721 } 3722 if (!HasRelocSections) 3723 OS << "\nThere are no relocations in this file.\n"; 3724 } 3725 3726 // Print the offset of a particular section from anyone of the ranges: 3727 // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER]. 3728 // If 'Type' does not fall within any of those ranges, then a string is 3729 // returned as '<unknown>' followed by the type value. 3730 static std::string getSectionTypeOffsetString(unsigned Type) { 3731 if (Type >= SHT_LOOS && Type <= SHT_HIOS) 3732 return "LOOS+0x" + to_hexString(Type - SHT_LOOS); 3733 else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC) 3734 return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC); 3735 else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER) 3736 return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER); 3737 return "0x" + to_hexString(Type) + ": <unknown>"; 3738 } 3739 3740 static std::string getSectionTypeString(unsigned Arch, unsigned Type) { 3741 using namespace ELF; 3742 3743 switch (Arch) { 3744 case EM_ARM: 3745 switch (Type) { 3746 case SHT_ARM_EXIDX: 3747 return "ARM_EXIDX"; 3748 case SHT_ARM_PREEMPTMAP: 3749 return "ARM_PREEMPTMAP"; 3750 case SHT_ARM_ATTRIBUTES: 3751 return "ARM_ATTRIBUTES"; 3752 case SHT_ARM_DEBUGOVERLAY: 3753 return "ARM_DEBUGOVERLAY"; 3754 case SHT_ARM_OVERLAYSECTION: 3755 return "ARM_OVERLAYSECTION"; 3756 } 3757 break; 3758 case EM_X86_64: 3759 switch (Type) { 3760 case SHT_X86_64_UNWIND: 3761 return "X86_64_UNWIND"; 3762 } 3763 break; 3764 case EM_MIPS: 3765 case EM_MIPS_RS3_LE: 3766 switch (Type) { 3767 case SHT_MIPS_REGINFO: 3768 return "MIPS_REGINFO"; 3769 case SHT_MIPS_OPTIONS: 3770 return "MIPS_OPTIONS"; 3771 case SHT_MIPS_DWARF: 3772 return "MIPS_DWARF"; 3773 case SHT_MIPS_ABIFLAGS: 3774 return "MIPS_ABIFLAGS"; 3775 } 3776 break; 3777 case EM_RISCV: 3778 switch (Type) { 3779 case SHT_RISCV_ATTRIBUTES: 3780 return "RISCV_ATTRIBUTES"; 3781 } 3782 } 3783 switch (Type) { 3784 case SHT_NULL: 3785 return "NULL"; 3786 case SHT_PROGBITS: 3787 return "PROGBITS"; 3788 case SHT_SYMTAB: 3789 return "SYMTAB"; 3790 case SHT_STRTAB: 3791 return "STRTAB"; 3792 case SHT_RELA: 3793 return "RELA"; 3794 case SHT_HASH: 3795 return "HASH"; 3796 case SHT_DYNAMIC: 3797 return "DYNAMIC"; 3798 case SHT_NOTE: 3799 return "NOTE"; 3800 case SHT_NOBITS: 3801 return "NOBITS"; 3802 case SHT_REL: 3803 return "REL"; 3804 case SHT_SHLIB: 3805 return "SHLIB"; 3806 case SHT_DYNSYM: 3807 return "DYNSYM"; 3808 case SHT_INIT_ARRAY: 3809 return "INIT_ARRAY"; 3810 case SHT_FINI_ARRAY: 3811 return "FINI_ARRAY"; 3812 case SHT_PREINIT_ARRAY: 3813 return "PREINIT_ARRAY"; 3814 case SHT_GROUP: 3815 return "GROUP"; 3816 case SHT_SYMTAB_SHNDX: 3817 return "SYMTAB SECTION INDICES"; 3818 case SHT_ANDROID_REL: 3819 return "ANDROID_REL"; 3820 case SHT_ANDROID_RELA: 3821 return "ANDROID_RELA"; 3822 case SHT_RELR: 3823 case SHT_ANDROID_RELR: 3824 return "RELR"; 3825 case SHT_LLVM_ODRTAB: 3826 return "LLVM_ODRTAB"; 3827 case SHT_LLVM_LINKER_OPTIONS: 3828 return "LLVM_LINKER_OPTIONS"; 3829 case SHT_LLVM_CALL_GRAPH_PROFILE: 3830 return "LLVM_CALL_GRAPH_PROFILE"; 3831 case SHT_LLVM_ADDRSIG: 3832 return "LLVM_ADDRSIG"; 3833 case SHT_LLVM_DEPENDENT_LIBRARIES: 3834 return "LLVM_DEPENDENT_LIBRARIES"; 3835 case SHT_LLVM_SYMPART: 3836 return "LLVM_SYMPART"; 3837 case SHT_LLVM_PART_EHDR: 3838 return "LLVM_PART_EHDR"; 3839 case SHT_LLVM_PART_PHDR: 3840 return "LLVM_PART_PHDR"; 3841 // FIXME: Parse processor specific GNU attributes 3842 case SHT_GNU_ATTRIBUTES: 3843 return "ATTRIBUTES"; 3844 case SHT_GNU_HASH: 3845 return "GNU_HASH"; 3846 case SHT_GNU_verdef: 3847 return "VERDEF"; 3848 case SHT_GNU_verneed: 3849 return "VERNEED"; 3850 case SHT_GNU_versym: 3851 return "VERSYM"; 3852 default: 3853 return getSectionTypeOffsetString(Type); 3854 } 3855 return ""; 3856 } 3857 3858 static void printSectionDescription(formatted_raw_ostream &OS, 3859 unsigned EMachine) { 3860 OS << "Key to Flags:\n"; 3861 OS << " W (write), A (alloc), X (execute), M (merge), S (strings), I " 3862 "(info),\n"; 3863 OS << " L (link order), O (extra OS processing required), G (group), T " 3864 "(TLS),\n"; 3865 OS << " C (compressed), x (unknown), o (OS specific), E (exclude),\n"; 3866 3867 if (EMachine == EM_X86_64) 3868 OS << " l (large), "; 3869 else if (EMachine == EM_ARM) 3870 OS << " y (purecode), "; 3871 else 3872 OS << " "; 3873 3874 OS << "p (processor specific)\n"; 3875 } 3876 3877 template <class ELFT> 3878 void GNUStyle<ELFT>::printSectionHeaders(const ELFO *Obj) { 3879 unsigned Bias = ELFT::Is64Bits ? 0 : 8; 3880 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 3881 OS << "There are " << to_string(Sections.size()) 3882 << " section headers, starting at offset " 3883 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 3884 OS << "Section Headers:\n"; 3885 Field Fields[11] = { 3886 {"[Nr]", 2}, {"Name", 7}, {"Type", 25}, 3887 {"Address", 41}, {"Off", 58 - Bias}, {"Size", 65 - Bias}, 3888 {"ES", 72 - Bias}, {"Flg", 75 - Bias}, {"Lk", 79 - Bias}, 3889 {"Inf", 82 - Bias}, {"Al", 86 - Bias}}; 3890 for (auto &F : Fields) 3891 printField(F); 3892 OS << "\n"; 3893 3894 StringRef SecStrTable; 3895 if (Expected<StringRef> SecStrTableOrErr = 3896 Obj->getSectionStringTable(Sections, this->dumper()->WarningHandler)) 3897 SecStrTable = *SecStrTableOrErr; 3898 else 3899 this->reportUniqueWarning(SecStrTableOrErr.takeError()); 3900 3901 size_t SectionIndex = 0; 3902 for (const Elf_Shdr &Sec : Sections) { 3903 Fields[0].Str = to_string(SectionIndex); 3904 if (SecStrTable.empty()) 3905 Fields[1].Str = "<no-strings>"; 3906 else 3907 Fields[1].Str = std::string(unwrapOrError<StringRef>( 3908 this->FileName, Obj->getSectionName(&Sec, SecStrTable))); 3909 Fields[2].Str = 3910 getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 3911 Fields[3].Str = 3912 to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8)); 3913 Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 3914 Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 3915 Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 3916 Fields[7].Str = getGNUFlags(Obj->getHeader()->e_machine, Sec.sh_flags); 3917 Fields[8].Str = to_string(Sec.sh_link); 3918 Fields[9].Str = to_string(Sec.sh_info); 3919 Fields[10].Str = to_string(Sec.sh_addralign); 3920 3921 OS.PadToColumn(Fields[0].Column); 3922 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 3923 for (int i = 1; i < 7; i++) 3924 printField(Fields[i]); 3925 OS.PadToColumn(Fields[7].Column); 3926 OS << right_justify(Fields[7].Str, 3); 3927 OS.PadToColumn(Fields[8].Column); 3928 OS << right_justify(Fields[8].Str, 2); 3929 OS.PadToColumn(Fields[9].Column); 3930 OS << right_justify(Fields[9].Str, 3); 3931 OS.PadToColumn(Fields[10].Column); 3932 OS << right_justify(Fields[10].Str, 2); 3933 OS << "\n"; 3934 ++SectionIndex; 3935 } 3936 printSectionDescription(OS, Obj->getHeader()->e_machine); 3937 } 3938 3939 template <class ELFT> 3940 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 3941 size_t Entries, 3942 bool NonVisibilityBitsUsed) { 3943 if (!Name.empty()) 3944 OS << "\nSymbol table '" << Name << "'"; 3945 else 3946 OS << "\nSymbol table for image"; 3947 OS << " contains " << Entries << " entries:\n"; 3948 3949 if (ELFT::Is64Bits) 3950 OS << " Num: Value Size Type Bind Vis"; 3951 else 3952 OS << " Num: Value Size Type Bind Vis"; 3953 3954 if (NonVisibilityBitsUsed) 3955 OS << " "; 3956 OS << " Ndx Name\n"; 3957 } 3958 3959 template <class ELFT> 3960 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 3961 const Elf_Sym *Symbol, 3962 const Elf_Sym *FirstSym) { 3963 unsigned SectionIndex = Symbol->st_shndx; 3964 switch (SectionIndex) { 3965 case ELF::SHN_UNDEF: 3966 return "UND"; 3967 case ELF::SHN_ABS: 3968 return "ABS"; 3969 case ELF::SHN_COMMON: 3970 return "COM"; 3971 case ELF::SHN_XINDEX: { 3972 Expected<uint32_t> IndexOrErr = object::getExtendedSymbolTableIndex<ELFT>( 3973 Symbol, FirstSym, this->dumper()->getShndxTable()); 3974 if (!IndexOrErr) { 3975 assert(Symbol->st_shndx == SHN_XINDEX && 3976 "getSymbolSectionIndex should only fail due to an invalid " 3977 "SHT_SYMTAB_SHNDX table/reference"); 3978 this->reportUniqueWarning(IndexOrErr.takeError()); 3979 return "RSV[0xffff]"; 3980 } 3981 return to_string(format_decimal(*IndexOrErr, 3)); 3982 } 3983 default: 3984 // Find if: 3985 // Processor specific 3986 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 3987 return std::string("PRC[0x") + 3988 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3989 // OS specific 3990 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 3991 return std::string("OS[0x") + 3992 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3993 // Architecture reserved: 3994 if (SectionIndex >= ELF::SHN_LORESERVE && 3995 SectionIndex <= ELF::SHN_HIRESERVE) 3996 return std::string("RSV[0x") + 3997 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3998 // A normal section with an index 3999 return to_string(format_decimal(SectionIndex, 3)); 4000 } 4001 } 4002 4003 template <class ELFT> 4004 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 4005 const Elf_Sym *FirstSym, 4006 Optional<StringRef> StrTable, bool IsDynamic, 4007 bool NonVisibilityBitsUsed) { 4008 static int Idx = 0; 4009 static bool Dynamic = true; 4010 4011 // If this function was called with a different value from IsDynamic 4012 // from last call, happens when we move from dynamic to static symbol 4013 // table, "Num" field should be reset. 4014 if (!Dynamic != !IsDynamic) { 4015 Idx = 0; 4016 Dynamic = false; 4017 } 4018 4019 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4020 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 4021 31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias}; 4022 Fields[0].Str = to_string(format_decimal(Idx++, 6)) + ":"; 4023 Fields[1].Str = to_string( 4024 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); 4025 Fields[2].Str = to_string(format_decimal(Symbol->st_size, 5)); 4026 4027 unsigned char SymbolType = Symbol->getType(); 4028 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4029 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4030 Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4031 else 4032 Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 4033 4034 Fields[4].Str = 4035 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4036 Fields[5].Str = 4037 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities)); 4038 if (Symbol->st_other & ~0x3) 4039 Fields[5].Str += 4040 " [<other: " + to_string(format_hex(Symbol->st_other, 2)) + ">]"; 4041 4042 Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0; 4043 Fields[6].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym); 4044 4045 Fields[7].Str = 4046 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 4047 for (auto &Entry : Fields) 4048 printField(Entry); 4049 OS << "\n"; 4050 } 4051 4052 template <class ELFT> 4053 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 4054 uint32_t Sym, StringRef StrTable, 4055 uint32_t Bucket) { 4056 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4057 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 4058 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 4059 Fields[0].Str = to_string(format_decimal(Sym, 5)); 4060 Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":"; 4061 4062 const auto Symbol = FirstSym + Sym; 4063 Fields[2].Str = to_string( 4064 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); 4065 Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5)); 4066 4067 unsigned char SymbolType = Symbol->getType(); 4068 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4069 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4070 Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4071 else 4072 Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 4073 4074 Fields[5].Str = 4075 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4076 Fields[6].Str = 4077 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities)); 4078 Fields[7].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym); 4079 Fields[8].Str = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 4080 4081 for (auto &Entry : Fields) 4082 printField(Entry); 4083 OS << "\n"; 4084 } 4085 4086 template <class ELFT> 4087 void GNUStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols, 4088 bool PrintDynamicSymbols) { 4089 if (!PrintSymbols && !PrintDynamicSymbols) 4090 return; 4091 // GNU readelf prints both the .dynsym and .symtab with --symbols. 4092 this->dumper()->printSymbolsHelper(true); 4093 if (PrintSymbols) 4094 this->dumper()->printSymbolsHelper(false); 4095 } 4096 4097 template <class ELFT> 4098 void GNUStyle<ELFT>::printHashTableSymbols(const ELFO *Obj, 4099 const Elf_Hash &SysVHash) { 4100 StringRef StringTable = this->dumper()->getDynamicStringTable(); 4101 if (StringTable.empty()) 4102 return; 4103 4104 if (ELFT::Is64Bits) 4105 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4106 else 4107 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4108 OS << "\n"; 4109 4110 Elf_Sym_Range DynSyms = this->dumper()->dynamic_symbols(); 4111 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 4112 if (!FirstSym) { 4113 Optional<DynRegionInfo> DynSymRegion = this->dumper()->getDynSymRegion(); 4114 this->reportUniqueWarning( 4115 createError(Twine("unable to print symbols for the .hash table: the " 4116 "dynamic symbol table ") + 4117 (DynSymRegion ? "is empty" : "was not found"))); 4118 return; 4119 } 4120 4121 auto Buckets = SysVHash.buckets(); 4122 auto Chains = SysVHash.chains(); 4123 for (uint32_t Buc = 0; Buc < SysVHash.nbucket; Buc++) { 4124 if (Buckets[Buc] == ELF::STN_UNDEF) 4125 continue; 4126 std::vector<bool> Visited(SysVHash.nchain); 4127 for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash.nchain; Ch = Chains[Ch]) { 4128 if (Ch == ELF::STN_UNDEF) 4129 break; 4130 4131 if (Visited[Ch]) { 4132 reportWarning(createError(".hash section is invalid: bucket " + 4133 Twine(Ch) + 4134 ": a cycle was detected in the linked chain"), 4135 this->FileName); 4136 break; 4137 } 4138 4139 printHashedSymbol(Obj, FirstSym, Ch, StringTable, Buc); 4140 Visited[Ch] = true; 4141 } 4142 } 4143 } 4144 4145 template <class ELFT> 4146 void GNUStyle<ELFT>::printGnuHashTableSymbols(const ELFO *Obj, 4147 const Elf_GnuHash &GnuHash) { 4148 StringRef StringTable = this->dumper()->getDynamicStringTable(); 4149 if (StringTable.empty()) 4150 return; 4151 4152 Elf_Sym_Range DynSyms = this->dumper()->dynamic_symbols(); 4153 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 4154 if (!FirstSym) { 4155 Optional<DynRegionInfo> DynSymRegion = this->dumper()->getDynSymRegion(); 4156 this->reportUniqueWarning(createError( 4157 Twine("unable to print symbols for the .gnu.hash table: the " 4158 "dynamic symbol table ") + 4159 (DynSymRegion ? "is empty" : "was not found"))); 4160 return; 4161 } 4162 4163 ArrayRef<Elf_Word> Buckets = GnuHash.buckets(); 4164 for (uint32_t Buc = 0; Buc < GnuHash.nbuckets; Buc++) { 4165 if (Buckets[Buc] == ELF::STN_UNDEF) 4166 continue; 4167 uint32_t Index = Buckets[Buc]; 4168 uint32_t GnuHashable = Index - GnuHash.symndx; 4169 // Print whole chain 4170 while (true) { 4171 printHashedSymbol(Obj, FirstSym, Index++, StringTable, Buc); 4172 // Chain ends at symbol with stopper bit 4173 if ((GnuHash.values(DynSyms.size())[GnuHashable++] & 1) == 1) 4174 break; 4175 } 4176 } 4177 } 4178 4179 template <class ELFT> void GNUStyle<ELFT>::printHashSymbols(const ELFO *Obj) { 4180 if (const Elf_Hash *SysVHash = this->dumper()->getHashTable()) { 4181 OS << "\n Symbol table of .hash for image:\n"; 4182 if (Error E = checkHashTable<ELFT>(Obj, SysVHash)) 4183 this->reportUniqueWarning(std::move(E)); 4184 else 4185 printHashTableSymbols(Obj, *SysVHash); 4186 } 4187 4188 // Try printing the .gnu.hash table. 4189 if (const Elf_GnuHash *GnuHash = this->dumper()->getGnuHashTable()) { 4190 OS << "\n Symbol table of .gnu.hash for image:\n"; 4191 if (ELFT::Is64Bits) 4192 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4193 else 4194 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4195 OS << "\n"; 4196 4197 if (Error E = checkGNUHashTable<ELFT>(Obj, GnuHash)) 4198 this->reportUniqueWarning(std::move(E)); 4199 else 4200 printGnuHashTableSymbols(Obj, *GnuHash); 4201 } 4202 } 4203 4204 static inline std::string printPhdrFlags(unsigned Flag) { 4205 std::string Str; 4206 Str = (Flag & PF_R) ? "R" : " "; 4207 Str += (Flag & PF_W) ? "W" : " "; 4208 Str += (Flag & PF_X) ? "E" : " "; 4209 return Str; 4210 } 4211 4212 template <class ELFT> 4213 static bool checkTLSSections(const typename ELFT::Phdr &Phdr, 4214 const typename ELFT::Shdr &Sec) { 4215 if (Sec.sh_flags & ELF::SHF_TLS) { 4216 // .tbss must only be shown in the PT_TLS segment. 4217 if (Sec.sh_type == ELF::SHT_NOBITS) 4218 return Phdr.p_type == ELF::PT_TLS; 4219 4220 // SHF_TLS sections are only shown in PT_TLS, PT_LOAD or PT_GNU_RELRO 4221 // segments. 4222 return (Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 4223 (Phdr.p_type == ELF::PT_GNU_RELRO); 4224 } 4225 4226 // PT_TLS must only have SHF_TLS sections. 4227 return Phdr.p_type != ELF::PT_TLS; 4228 } 4229 4230 template <class ELFT> 4231 static bool checkOffsets(const typename ELFT::Phdr &Phdr, 4232 const typename ELFT::Shdr &Sec) { 4233 // SHT_NOBITS sections don't need to have an offset inside the segment. 4234 if (Sec.sh_type == ELF::SHT_NOBITS) 4235 return true; 4236 4237 if (Sec.sh_offset < Phdr.p_offset) 4238 return false; 4239 4240 // Only non-empty sections can be at the end of a segment. 4241 if (Sec.sh_size == 0) 4242 return (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz); 4243 return Sec.sh_offset + Sec.sh_size <= Phdr.p_offset + Phdr.p_filesz; 4244 } 4245 4246 // Check that an allocatable section belongs to a virtual address 4247 // space of a segment. 4248 template <class ELFT> 4249 static bool checkVMA(const typename ELFT::Phdr &Phdr, 4250 const typename ELFT::Shdr &Sec) { 4251 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 4252 return true; 4253 4254 if (Sec.sh_addr < Phdr.p_vaddr) 4255 return false; 4256 4257 bool IsTbss = 4258 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 4259 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties. 4260 bool IsTbssInNonTLS = IsTbss && Phdr.p_type != ELF::PT_TLS; 4261 // Only non-empty sections can be at the end of a segment. 4262 if (Sec.sh_size == 0 || IsTbssInNonTLS) 4263 return Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz; 4264 return Sec.sh_addr + Sec.sh_size <= Phdr.p_vaddr + Phdr.p_memsz; 4265 } 4266 4267 template <class ELFT> 4268 static bool checkPTDynamic(const typename ELFT::Phdr &Phdr, 4269 const typename ELFT::Shdr &Sec) { 4270 if (Phdr.p_type != ELF::PT_DYNAMIC || Phdr.p_memsz == 0 || Sec.sh_size != 0) 4271 return true; 4272 4273 // We get here when we have an empty section. Only non-empty sections can be 4274 // at the start or at the end of PT_DYNAMIC. 4275 // Is section within the phdr both based on offset and VMA? 4276 bool CheckOffset = (Sec.sh_type == ELF::SHT_NOBITS) || 4277 (Sec.sh_offset > Phdr.p_offset && 4278 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz); 4279 bool CheckVA = !(Sec.sh_flags & ELF::SHF_ALLOC) || 4280 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz); 4281 return CheckOffset && CheckVA; 4282 } 4283 4284 template <class ELFT> 4285 void GNUStyle<ELFT>::printProgramHeaders( 4286 const ELFO *Obj, bool PrintProgramHeaders, 4287 cl::boolOrDefault PrintSectionMapping) { 4288 if (PrintProgramHeaders) 4289 printProgramHeaders(Obj); 4290 4291 // Display the section mapping along with the program headers, unless 4292 // -section-mapping is explicitly set to false. 4293 if (PrintSectionMapping != cl::BOU_FALSE) 4294 printSectionMapping(Obj); 4295 } 4296 4297 template <class ELFT> 4298 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 4299 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4300 const Elf_Ehdr *Header = Obj->getHeader(); 4301 Field Fields[8] = {2, 17, 26, 37 + Bias, 4302 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 4303 OS << "\nElf file type is " 4304 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 4305 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 4306 << "There are " << Header->e_phnum << " program headers," 4307 << " starting at offset " << Header->e_phoff << "\n\n" 4308 << "Program Headers:\n"; 4309 if (ELFT::Is64Bits) 4310 OS << " Type Offset VirtAddr PhysAddr " 4311 << " FileSiz MemSiz Flg Align\n"; 4312 else 4313 OS << " Type Offset VirtAddr PhysAddr FileSiz " 4314 << "MemSiz Flg Align\n"; 4315 4316 unsigned Width = ELFT::Is64Bits ? 18 : 10; 4317 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 4318 for (const auto &Phdr : 4319 unwrapOrError(this->FileName, Obj->program_headers())) { 4320 Fields[0].Str = getElfPtType(Header->e_machine, Phdr.p_type); 4321 Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8)); 4322 Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width)); 4323 Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width)); 4324 Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 4325 Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 4326 Fields[6].Str = printPhdrFlags(Phdr.p_flags); 4327 Fields[7].Str = to_string(format_hex(Phdr.p_align, 1)); 4328 for (auto Field : Fields) 4329 printField(Field); 4330 if (Phdr.p_type == ELF::PT_INTERP) { 4331 OS << "\n"; 4332 auto ReportBadInterp = [&](const Twine &Msg) { 4333 reportWarning( 4334 createError("unable to read program interpreter name at offset 0x" + 4335 Twine::utohexstr(Phdr.p_offset) + ": " + Msg), 4336 this->FileName); 4337 }; 4338 4339 if (Phdr.p_offset >= Obj->getBufSize()) { 4340 ReportBadInterp("it goes past the end of the file (0x" + 4341 Twine::utohexstr(Obj->getBufSize()) + ")"); 4342 continue; 4343 } 4344 4345 const char *Data = 4346 reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset; 4347 size_t MaxSize = Obj->getBufSize() - Phdr.p_offset; 4348 size_t Len = strnlen(Data, MaxSize); 4349 if (Len == MaxSize) { 4350 ReportBadInterp("it is not null-terminated"); 4351 continue; 4352 } 4353 4354 OS << " [Requesting program interpreter: "; 4355 OS << StringRef(Data, Len) << "]"; 4356 } 4357 OS << "\n"; 4358 } 4359 } 4360 4361 template <class ELFT> 4362 void GNUStyle<ELFT>::printSectionMapping(const ELFO *Obj) { 4363 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 4364 DenseSet<const Elf_Shdr *> BelongsToSegment; 4365 int Phnum = 0; 4366 for (const Elf_Phdr &Phdr : 4367 unwrapOrError(this->FileName, Obj->program_headers())) { 4368 std::string Sections; 4369 OS << format(" %2.2d ", Phnum++); 4370 // Check if each section is in a segment and then print mapping. 4371 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 4372 if (Sec.sh_type == ELF::SHT_NULL) 4373 continue; 4374 4375 // readelf additionally makes sure it does not print zero sized sections 4376 // at end of segments and for PT_DYNAMIC both start and end of section 4377 // .tbss must only be shown in PT_TLS section. 4378 if (checkTLSSections<ELFT>(Phdr, Sec) && checkOffsets<ELFT>(Phdr, Sec) && 4379 checkVMA<ELFT>(Phdr, Sec) && checkPTDynamic<ELFT>(Phdr, Sec)) { 4380 Sections += 4381 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + 4382 " "; 4383 BelongsToSegment.insert(&Sec); 4384 } 4385 } 4386 OS << Sections << "\n"; 4387 OS.flush(); 4388 } 4389 4390 // Display sections that do not belong to a segment. 4391 std::string Sections; 4392 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 4393 if (BelongsToSegment.find(&Sec) == BelongsToSegment.end()) 4394 Sections += 4395 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + ' '; 4396 } 4397 if (!Sections.empty()) { 4398 OS << " None " << Sections << '\n'; 4399 OS.flush(); 4400 } 4401 } 4402 4403 namespace { 4404 template <class ELFT> struct RelSymbol { 4405 const typename ELFT::Sym *Sym; 4406 std::string Name; 4407 }; 4408 4409 template <class ELFT> 4410 RelSymbol<ELFT> getSymbolForReloc(const ELFFile<ELFT> *Obj, StringRef FileName, 4411 const ELFDumper<ELFT> *Dumper, 4412 const typename ELFT::Rela &Reloc) { 4413 uint32_t SymIndex = Reloc.getSymbol(Obj->isMips64EL()); 4414 auto WarnAndReturn = [&](const typename ELFT::Sym *Sym, 4415 const Twine &Reason) -> RelSymbol<ELFT> { 4416 reportWarning( 4417 createError("unable to get name of the dynamic symbol with index " + 4418 Twine(SymIndex) + ": " + Reason), 4419 FileName); 4420 return {Sym, "<corrupt>"}; 4421 }; 4422 4423 ArrayRef<typename ELFT::Sym> Symbols = Dumper->dynamic_symbols(); 4424 const typename ELFT::Sym *FirstSym = Symbols.begin(); 4425 if (!FirstSym) 4426 return WarnAndReturn(nullptr, "no dynamic symbol table found"); 4427 4428 // We might have an object without a section header. In this case the size of 4429 // Symbols is zero, because there is no way to know the size of the dynamic 4430 // table. We should allow this case and not print a warning. 4431 if (!Symbols.empty() && SymIndex >= Symbols.size()) 4432 return WarnAndReturn( 4433 nullptr, 4434 "index is greater than or equal to the number of dynamic symbols (" + 4435 Twine(Symbols.size()) + ")"); 4436 4437 const typename ELFT::Sym *Sym = FirstSym + SymIndex; 4438 Expected<StringRef> ErrOrName = Sym->getName(Dumper->getDynamicStringTable()); 4439 if (!ErrOrName) 4440 return WarnAndReturn(Sym, toString(ErrOrName.takeError())); 4441 4442 return {Sym == FirstSym ? nullptr : Sym, maybeDemangle(*ErrOrName)}; 4443 } 4444 } // namespace 4445 4446 template <class ELFT> 4447 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 4448 bool IsRela) { 4449 RelSymbol<ELFT> S = getSymbolForReloc(Obj, this->FileName, this->dumper(), R); 4450 printRelocation(Obj, S.Sym, S.Name, R, IsRela); 4451 } 4452 4453 template <class ELFT> 4454 static size_t getMaxDynamicTagSize(const ELFFile<ELFT> *Obj, 4455 typename ELFT::DynRange Tags) { 4456 size_t Max = 0; 4457 for (const typename ELFT::Dyn &Dyn : Tags) 4458 Max = std::max(Max, Obj->getDynamicTagAsString(Dyn.d_tag).size()); 4459 return Max; 4460 } 4461 4462 template <class ELFT> void GNUStyle<ELFT>::printDynamic(const ELFO *Obj) { 4463 Elf_Dyn_Range Table = this->dumper()->dynamic_table(); 4464 if (Table.empty()) 4465 return; 4466 4467 const DynRegionInfo &DynamicTableRegion = 4468 this->dumper()->getDynamicTableRegion(); 4469 4470 OS << "Dynamic section at offset " 4471 << format_hex(reinterpret_cast<const uint8_t *>(DynamicTableRegion.Addr) - 4472 Obj->base(), 4473 1) 4474 << " contains " << Table.size() << " entries:\n"; 4475 4476 // The type name is surrounded with round brackets, hence add 2. 4477 size_t MaxTagSize = getMaxDynamicTagSize(Obj, Table) + 2; 4478 // The "Name/Value" column should be indented from the "Type" column by N 4479 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 4480 // space (1) = 3. 4481 OS << " Tag" + std::string(ELFT::Is64Bits ? 16 : 8, ' ') + "Type" 4482 << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 4483 4484 std::string ValueFmt = " %-" + std::to_string(MaxTagSize) + "s "; 4485 for (auto Entry : Table) { 4486 uintX_t Tag = Entry.getTag(); 4487 std::string Type = 4488 std::string("(") + Obj->getDynamicTagAsString(Tag).c_str() + ")"; 4489 std::string Value = this->dumper()->getDynamicEntry(Tag, Entry.getVal()); 4490 OS << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10) 4491 << format(ValueFmt.c_str(), Type.c_str()) << Value << "\n"; 4492 } 4493 } 4494 4495 template <class ELFT> 4496 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 4497 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 4498 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 4499 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 4500 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 4501 if (DynRelaRegion.Size > 0) { 4502 OS << "\n'RELA' relocation section at offset " 4503 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 4504 Obj->base(), 4505 1) 4506 << " contains " << DynRelaRegion.Size << " bytes:\n"; 4507 printRelocHeader(ELF::SHT_RELA); 4508 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 4509 printDynamicRelocation(Obj, Rela, true); 4510 } 4511 if (DynRelRegion.Size > 0) { 4512 OS << "\n'REL' relocation section at offset " 4513 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 4514 Obj->base(), 4515 1) 4516 << " contains " << DynRelRegion.Size << " bytes:\n"; 4517 printRelocHeader(ELF::SHT_REL); 4518 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 4519 Elf_Rela Rela; 4520 Rela.r_offset = Rel.r_offset; 4521 Rela.r_info = Rel.r_info; 4522 Rela.r_addend = 0; 4523 printDynamicRelocation(Obj, Rela, false); 4524 } 4525 } 4526 if (DynRelrRegion.Size > 0) { 4527 OS << "\n'RELR' relocation section at offset " 4528 << format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) - 4529 Obj->base(), 4530 1) 4531 << " contains " << DynRelrRegion.Size << " bytes:\n"; 4532 printRelocHeader(ELF::SHT_REL); 4533 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 4534 std::vector<Elf_Rela> RelrRelas = 4535 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 4536 for (const Elf_Rela &Rela : RelrRelas) { 4537 printDynamicRelocation(Obj, Rela, false); 4538 } 4539 } 4540 if (DynPLTRelRegion.Size) { 4541 OS << "\n'PLT' relocation section at offset " 4542 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 4543 Obj->base(), 4544 1) 4545 << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 4546 } 4547 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 4548 printRelocHeader(ELF::SHT_RELA); 4549 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 4550 printDynamicRelocation(Obj, Rela, true); 4551 } else { 4552 printRelocHeader(ELF::SHT_REL); 4553 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 4554 Elf_Rela Rela; 4555 Rela.r_offset = Rel.r_offset; 4556 Rela.r_info = Rel.r_info; 4557 Rela.r_addend = 0; 4558 printDynamicRelocation(Obj, Rela, false); 4559 } 4560 } 4561 } 4562 4563 template <class ELFT> 4564 void GNUStyle<ELFT>::printGNUVersionSectionProlog( 4565 const ELFFile<ELFT> *Obj, const typename ELFT::Shdr *Sec, 4566 const Twine &Label, unsigned EntriesNum) { 4567 StringRef SecName = unwrapOrError(this->FileName, Obj->getSectionName(Sec)); 4568 OS << Label << " section '" << SecName << "' " 4569 << "contains " << EntriesNum << " entries:\n"; 4570 4571 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 4572 StringRef SymTabName = "<corrupt>"; 4573 4574 Expected<const typename ELFT::Shdr *> SymTabOrErr = 4575 Obj->getSection(Sec->sh_link); 4576 if (SymTabOrErr) 4577 SymTabName = 4578 unwrapOrError(this->FileName, Obj->getSectionName(*SymTabOrErr)); 4579 else 4580 this->reportUniqueWarning( 4581 createError("invalid section linked to " + 4582 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 4583 Sec->sh_type) + 4584 " section with index " + Twine(SecNdx) + ": " + 4585 toString(SymTabOrErr.takeError()))); 4586 4587 OS << " Addr: " << format_hex_no_prefix(Sec->sh_addr, 16) 4588 << " Offset: " << format_hex(Sec->sh_offset, 8) 4589 << " Link: " << Sec->sh_link << " (" << SymTabName << ")\n"; 4590 } 4591 4592 template <class ELFT> 4593 void GNUStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj, 4594 const Elf_Shdr *Sec) { 4595 if (!Sec) 4596 return; 4597 4598 printGNUVersionSectionProlog(Obj, Sec, "Version symbols", 4599 Sec->sh_size / sizeof(Elf_Versym)); 4600 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 4601 this->dumper()->getVersionTable(Sec, /*SymTab=*/nullptr, 4602 /*StrTab=*/nullptr); 4603 if (!VerTableOrErr) { 4604 this->reportUniqueWarning(VerTableOrErr.takeError()); 4605 return; 4606 } 4607 4608 ArrayRef<Elf_Versym> VerTable = *VerTableOrErr; 4609 std::vector<StringRef> Versions; 4610 for (size_t I = 0, E = VerTable.size(); I < E; ++I) { 4611 unsigned Ndx = VerTable[I].vs_index; 4612 if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) { 4613 Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*"); 4614 continue; 4615 } 4616 4617 bool IsDefault; 4618 Expected<StringRef> NameOrErr = 4619 this->dumper()->getSymbolVersionByIndex(Ndx, IsDefault); 4620 if (!NameOrErr) { 4621 if (!NameOrErr) { 4622 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 4623 this->reportUniqueWarning(createError( 4624 "unable to get a version for entry " + Twine(I) + 4625 " of SHT_GNU_versym section with index " + Twine(SecNdx) + ": " + 4626 toString(NameOrErr.takeError()))); 4627 } 4628 Versions.emplace_back("<corrupt>"); 4629 continue; 4630 } 4631 Versions.emplace_back(*NameOrErr); 4632 } 4633 4634 // readelf prints 4 entries per line. 4635 uint64_t Entries = VerTable.size(); 4636 for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) { 4637 OS << " " << format_hex_no_prefix(VersymRow, 3) << ":"; 4638 for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) { 4639 unsigned Ndx = VerTable[VersymRow + I].vs_index; 4640 OS << format("%4x%c", Ndx & VERSYM_VERSION, 4641 Ndx & VERSYM_HIDDEN ? 'h' : ' '); 4642 OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13); 4643 } 4644 OS << '\n'; 4645 } 4646 OS << '\n'; 4647 } 4648 4649 static std::string versionFlagToString(unsigned Flags) { 4650 if (Flags == 0) 4651 return "none"; 4652 4653 std::string Ret; 4654 auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) { 4655 if (!(Flags & Flag)) 4656 return; 4657 if (!Ret.empty()) 4658 Ret += " | "; 4659 Ret += Name; 4660 Flags &= ~Flag; 4661 }; 4662 4663 AddFlag(VER_FLG_BASE, "BASE"); 4664 AddFlag(VER_FLG_WEAK, "WEAK"); 4665 AddFlag(VER_FLG_INFO, "INFO"); 4666 AddFlag(~0, "<unknown>"); 4667 return Ret; 4668 } 4669 4670 template <class ELFT> 4671 void GNUStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 4672 const Elf_Shdr *Sec) { 4673 if (!Sec) 4674 return; 4675 4676 printGNUVersionSectionProlog(Obj, Sec, "Version definition", Sec->sh_info); 4677 4678 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec); 4679 if (!V) { 4680 this->reportUniqueWarning(V.takeError()); 4681 return; 4682 } 4683 4684 for (const VerDef &Def : *V) { 4685 OS << format(" 0x%04x: Rev: %u Flags: %s Index: %u Cnt: %u Name: %s\n", 4686 Def.Offset, Def.Version, 4687 versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt, 4688 Def.Name.data()); 4689 unsigned I = 0; 4690 for (const VerdAux &Aux : Def.AuxV) 4691 OS << format(" 0x%04x: Parent %u: %s\n", Aux.Offset, ++I, 4692 Aux.Name.data()); 4693 } 4694 4695 OS << '\n'; 4696 } 4697 4698 template <class ELFT> 4699 void GNUStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj, 4700 const Elf_Shdr *Sec) { 4701 if (!Sec) 4702 return; 4703 4704 unsigned VerneedNum = Sec->sh_info; 4705 printGNUVersionSectionProlog(Obj, Sec, "Version needs", VerneedNum); 4706 4707 Expected<std::vector<VerNeed>> V = 4708 this->dumper()->getVersionDependencies(Sec); 4709 if (!V) { 4710 this->reportUniqueWarning(V.takeError()); 4711 return; 4712 } 4713 4714 for (const VerNeed &VN : *V) { 4715 OS << format(" 0x%04x: Version: %u File: %s Cnt: %u\n", VN.Offset, 4716 VN.Version, VN.File.data(), VN.Cnt); 4717 for (const VernAux &Aux : VN.AuxV) 4718 OS << format(" 0x%04x: Name: %s Flags: %s Version: %u\n", Aux.Offset, 4719 Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(), 4720 Aux.Other); 4721 } 4722 OS << '\n'; 4723 } 4724 4725 template <class ELFT> 4726 void GNUStyle<ELFT>::printHashHistogram(const Elf_Hash &HashTable) { 4727 size_t NBucket = HashTable.nbucket; 4728 size_t NChain = HashTable.nchain; 4729 ArrayRef<Elf_Word> Buckets = HashTable.buckets(); 4730 ArrayRef<Elf_Word> Chains = HashTable.chains(); 4731 size_t TotalSyms = 0; 4732 // If hash table is correct, we have at least chains with 0 length 4733 size_t MaxChain = 1; 4734 size_t CumulativeNonZero = 0; 4735 4736 if (NChain == 0 || NBucket == 0) 4737 return; 4738 4739 std::vector<size_t> ChainLen(NBucket, 0); 4740 // Go over all buckets and and note chain lengths of each bucket (total 4741 // unique chain lengths). 4742 for (size_t B = 0; B < NBucket; B++) { 4743 std::vector<bool> Visited(NChain); 4744 for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) { 4745 if (C == ELF::STN_UNDEF) 4746 break; 4747 if (Visited[C]) { 4748 reportWarning(createError(".hash section is invalid: bucket " + 4749 Twine(C) + 4750 ": a cycle was detected in the linked chain"), 4751 this->FileName); 4752 break; 4753 } 4754 Visited[C] = true; 4755 if (MaxChain <= ++ChainLen[B]) 4756 MaxChain++; 4757 } 4758 TotalSyms += ChainLen[B]; 4759 } 4760 4761 if (!TotalSyms) 4762 return; 4763 4764 std::vector<size_t> Count(MaxChain, 0); 4765 // Count how long is the chain for each bucket 4766 for (size_t B = 0; B < NBucket; B++) 4767 ++Count[ChainLen[B]]; 4768 // Print Number of buckets with each chain lengths and their cumulative 4769 // coverage of the symbols 4770 OS << "Histogram for bucket list length (total of " << NBucket 4771 << " buckets)\n" 4772 << " Length Number % of total Coverage\n"; 4773 for (size_t I = 0; I < MaxChain; I++) { 4774 CumulativeNonZero += Count[I] * I; 4775 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4776 (Count[I] * 100.0) / NBucket, 4777 (CumulativeNonZero * 100.0) / TotalSyms); 4778 } 4779 } 4780 4781 template <class ELFT> 4782 void GNUStyle<ELFT>::printGnuHashHistogram(const Elf_GnuHash &GnuHashTable) { 4783 Expected<ArrayRef<Elf_Word>> ChainsOrErr = getGnuHashTableChains<ELFT>( 4784 this->dumper()->getDynSymRegion(), &GnuHashTable); 4785 if (!ChainsOrErr) { 4786 this->reportUniqueWarning( 4787 createError("unable to print the GNU hash table histogram: " + 4788 toString(ChainsOrErr.takeError()))); 4789 return; 4790 } 4791 4792 ArrayRef<Elf_Word> Chains = *ChainsOrErr; 4793 size_t Symndx = GnuHashTable.symndx; 4794 size_t TotalSyms = 0; 4795 size_t MaxChain = 1; 4796 size_t CumulativeNonZero = 0; 4797 4798 size_t NBucket = GnuHashTable.nbuckets; 4799 if (Chains.empty() || NBucket == 0) 4800 return; 4801 4802 ArrayRef<Elf_Word> Buckets = GnuHashTable.buckets(); 4803 std::vector<size_t> ChainLen(NBucket, 0); 4804 for (size_t B = 0; B < NBucket; B++) { 4805 if (!Buckets[B]) 4806 continue; 4807 size_t Len = 1; 4808 for (size_t C = Buckets[B] - Symndx; 4809 C < Chains.size() && (Chains[C] & 1) == 0; C++) 4810 if (MaxChain < ++Len) 4811 MaxChain++; 4812 ChainLen[B] = Len; 4813 TotalSyms += Len; 4814 } 4815 MaxChain++; 4816 4817 if (!TotalSyms) 4818 return; 4819 4820 std::vector<size_t> Count(MaxChain, 0); 4821 for (size_t B = 0; B < NBucket; B++) 4822 ++Count[ChainLen[B]]; 4823 // Print Number of buckets with each chain lengths and their cumulative 4824 // coverage of the symbols 4825 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 4826 << " buckets)\n" 4827 << " Length Number % of total Coverage\n"; 4828 for (size_t I = 0; I < MaxChain; I++) { 4829 CumulativeNonZero += Count[I] * I; 4830 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4831 (Count[I] * 100.0) / NBucket, 4832 (CumulativeNonZero * 100.0) / TotalSyms); 4833 } 4834 } 4835 4836 // Hash histogram shows statistics of how efficient the hash was for the 4837 // dynamic symbol table. The table shows the number of hash buckets for 4838 // different lengths of chains as an absolute number and percentage of the total 4839 // buckets, and the cumulative coverage of symbols for each set of buckets. 4840 template <class ELFT> 4841 void GNUStyle<ELFT>::printHashHistograms(const ELFFile<ELFT> *Obj) { 4842 // Print histogram for the .hash section. 4843 if (const Elf_Hash *HashTable = this->dumper()->getHashTable()) { 4844 if (Error E = checkHashTable<ELFT>(Obj, HashTable)) 4845 this->reportUniqueWarning(std::move(E)); 4846 else 4847 printHashHistogram(*HashTable); 4848 } 4849 4850 // Print histogram for the .gnu.hash section. 4851 if (const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable()) { 4852 if (Error E = checkGNUHashTable<ELFT>(Obj, GnuHashTable)) 4853 this->reportUniqueWarning(std::move(E)); 4854 else 4855 printGnuHashHistogram(*GnuHashTable); 4856 } 4857 } 4858 4859 template <class ELFT> 4860 void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 4861 OS << "GNUStyle::printCGProfile not implemented\n"; 4862 } 4863 4864 template <class ELFT> 4865 void GNUStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) { 4866 reportError(createError("--addrsig: not implemented"), this->FileName); 4867 } 4868 4869 static StringRef getGenericNoteTypeName(const uint32_t NT) { 4870 static const struct { 4871 uint32_t ID; 4872 const char *Name; 4873 } Notes[] = { 4874 {ELF::NT_VERSION, "NT_VERSION (version)"}, 4875 {ELF::NT_ARCH, "NT_ARCH (architecture)"}, 4876 {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"}, 4877 {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"}, 4878 }; 4879 4880 for (const auto &Note : Notes) 4881 if (Note.ID == NT) 4882 return Note.Name; 4883 4884 return ""; 4885 } 4886 4887 static StringRef getCoreNoteTypeName(const uint32_t NT) { 4888 static const struct { 4889 uint32_t ID; 4890 const char *Name; 4891 } Notes[] = { 4892 {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"}, 4893 {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"}, 4894 {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"}, 4895 {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"}, 4896 {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"}, 4897 {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"}, 4898 {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"}, 4899 {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"}, 4900 {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"}, 4901 {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"}, 4902 {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"}, 4903 4904 {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"}, 4905 {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"}, 4906 {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"}, 4907 {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"}, 4908 {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"}, 4909 {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"}, 4910 {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"}, 4911 {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"}, 4912 {ELF::NT_PPC_TM_CFPR, 4913 "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"}, 4914 {ELF::NT_PPC_TM_CVMX, 4915 "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"}, 4916 {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"}, 4917 {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"}, 4918 {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"}, 4919 {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"}, 4920 {ELF::NT_PPC_TM_CDSCR, 4921 "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"}, 4922 4923 {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"}, 4924 {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"}, 4925 {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"}, 4926 4927 {ELF::NT_S390_HIGH_GPRS, 4928 "NT_S390_HIGH_GPRS (s390 upper register halves)"}, 4929 {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"}, 4930 {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"}, 4931 {ELF::NT_S390_TODPREG, 4932 "NT_S390_TODPREG (s390 TOD programmable register)"}, 4933 {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"}, 4934 {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"}, 4935 {ELF::NT_S390_LAST_BREAK, 4936 "NT_S390_LAST_BREAK (s390 last breaking event address)"}, 4937 {ELF::NT_S390_SYSTEM_CALL, 4938 "NT_S390_SYSTEM_CALL (s390 system call restart data)"}, 4939 {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"}, 4940 {ELF::NT_S390_VXRS_LOW, 4941 "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"}, 4942 {ELF::NT_S390_VXRS_HIGH, 4943 "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"}, 4944 {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"}, 4945 {ELF::NT_S390_GS_BC, 4946 "NT_S390_GS_BC (s390 guarded-storage broadcast control)"}, 4947 4948 {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"}, 4949 {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"}, 4950 {ELF::NT_ARM_HW_BREAK, 4951 "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"}, 4952 {ELF::NT_ARM_HW_WATCH, 4953 "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"}, 4954 4955 {ELF::NT_FILE, "NT_FILE (mapped files)"}, 4956 {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"}, 4957 {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"}, 4958 }; 4959 4960 for (const auto &Note : Notes) 4961 if (Note.ID == NT) 4962 return Note.Name; 4963 4964 return ""; 4965 } 4966 4967 static std::string getGNUNoteTypeName(const uint32_t NT) { 4968 static const struct { 4969 uint32_t ID; 4970 const char *Name; 4971 } Notes[] = { 4972 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 4973 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 4974 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 4975 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 4976 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, 4977 }; 4978 4979 for (const auto &Note : Notes) 4980 if (Note.ID == NT) 4981 return std::string(Note.Name); 4982 4983 std::string string; 4984 raw_string_ostream OS(string); 4985 OS << format("Unknown note type (0x%08x)", NT); 4986 return OS.str(); 4987 } 4988 4989 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 4990 static const struct { 4991 uint32_t ID; 4992 const char *Name; 4993 } Notes[] = { 4994 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 4995 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 4996 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 4997 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 4998 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 4999 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 5000 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 5001 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 5002 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 5003 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 5004 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 5005 }; 5006 5007 for (const auto &Note : Notes) 5008 if (Note.ID == NT) 5009 return std::string(Note.Name); 5010 5011 std::string string; 5012 raw_string_ostream OS(string); 5013 OS << format("Unknown note type (0x%08x)", NT); 5014 return OS.str(); 5015 } 5016 5017 static std::string getAMDNoteTypeName(const uint32_t NT) { 5018 static const struct { 5019 uint32_t ID; 5020 const char *Name; 5021 } Notes[] = {{ELF::NT_AMD_AMDGPU_HSA_METADATA, 5022 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 5023 {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"}, 5024 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 5025 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}}; 5026 5027 for (const auto &Note : Notes) 5028 if (Note.ID == NT) 5029 return std::string(Note.Name); 5030 5031 std::string string; 5032 raw_string_ostream OS(string); 5033 OS << format("Unknown note type (0x%08x)", NT); 5034 return OS.str(); 5035 } 5036 5037 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 5038 if (NT == ELF::NT_AMDGPU_METADATA) 5039 return std::string("NT_AMDGPU_METADATA (AMDGPU Metadata)"); 5040 5041 std::string string; 5042 raw_string_ostream OS(string); 5043 OS << format("Unknown note type (0x%08x)", NT); 5044 return OS.str(); 5045 } 5046 5047 template <typename ELFT> 5048 static std::string getGNUProperty(uint32_t Type, uint32_t DataSize, 5049 ArrayRef<uint8_t> Data) { 5050 std::string str; 5051 raw_string_ostream OS(str); 5052 uint32_t PrData; 5053 auto DumpBit = [&](uint32_t Flag, StringRef Name) { 5054 if (PrData & Flag) { 5055 PrData &= ~Flag; 5056 OS << Name; 5057 if (PrData) 5058 OS << ", "; 5059 } 5060 }; 5061 5062 switch (Type) { 5063 default: 5064 OS << format("<application-specific type 0x%x>", Type); 5065 return OS.str(); 5066 case GNU_PROPERTY_STACK_SIZE: { 5067 OS << "stack size: "; 5068 if (DataSize == sizeof(typename ELFT::uint)) 5069 OS << formatv("{0:x}", 5070 (uint64_t)(*(const typename ELFT::Addr *)Data.data())); 5071 else 5072 OS << format("<corrupt length: 0x%x>", DataSize); 5073 return OS.str(); 5074 } 5075 case GNU_PROPERTY_NO_COPY_ON_PROTECTED: 5076 OS << "no copy on protected"; 5077 if (DataSize) 5078 OS << format(" <corrupt length: 0x%x>", DataSize); 5079 return OS.str(); 5080 case GNU_PROPERTY_AARCH64_FEATURE_1_AND: 5081 case GNU_PROPERTY_X86_FEATURE_1_AND: 5082 OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: " 5083 : "x86 feature: "); 5084 if (DataSize != 4) { 5085 OS << format("<corrupt length: 0x%x>", DataSize); 5086 return OS.str(); 5087 } 5088 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5089 if (PrData == 0) { 5090 OS << "<None>"; 5091 return OS.str(); 5092 } 5093 if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) { 5094 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI"); 5095 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC"); 5096 } else { 5097 DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT"); 5098 DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK"); 5099 } 5100 if (PrData) 5101 OS << format("<unknown flags: 0x%x>", PrData); 5102 return OS.str(); 5103 case GNU_PROPERTY_X86_ISA_1_NEEDED: 5104 case GNU_PROPERTY_X86_ISA_1_USED: 5105 OS << "x86 ISA " 5106 << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: "); 5107 if (DataSize != 4) { 5108 OS << format("<corrupt length: 0x%x>", DataSize); 5109 return OS.str(); 5110 } 5111 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5112 if (PrData == 0) { 5113 OS << "<None>"; 5114 return OS.str(); 5115 } 5116 DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV"); 5117 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE"); 5118 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2"); 5119 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3"); 5120 DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3"); 5121 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1"); 5122 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2"); 5123 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX"); 5124 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2"); 5125 DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA"); 5126 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F"); 5127 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD"); 5128 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER"); 5129 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF"); 5130 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL"); 5131 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ"); 5132 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW"); 5133 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS"); 5134 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW"); 5135 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG"); 5136 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA"); 5137 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI"); 5138 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2"); 5139 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI"); 5140 if (PrData) 5141 OS << format("<unknown flags: 0x%x>", PrData); 5142 return OS.str(); 5143 break; 5144 case GNU_PROPERTY_X86_FEATURE_2_NEEDED: 5145 case GNU_PROPERTY_X86_FEATURE_2_USED: 5146 OS << "x86 feature " 5147 << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: "); 5148 if (DataSize != 4) { 5149 OS << format("<corrupt length: 0x%x>", DataSize); 5150 return OS.str(); 5151 } 5152 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5153 if (PrData == 0) { 5154 OS << "<None>"; 5155 return OS.str(); 5156 } 5157 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86"); 5158 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87"); 5159 DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX"); 5160 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM"); 5161 DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM"); 5162 DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM"); 5163 DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR"); 5164 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE"); 5165 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT"); 5166 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC"); 5167 if (PrData) 5168 OS << format("<unknown flags: 0x%x>", PrData); 5169 return OS.str(); 5170 } 5171 } 5172 5173 template <typename ELFT> 5174 static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) { 5175 using Elf_Word = typename ELFT::Word; 5176 5177 SmallVector<std::string, 4> Properties; 5178 while (Arr.size() >= 8) { 5179 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); 5180 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); 5181 Arr = Arr.drop_front(8); 5182 5183 // Take padding size into account if present. 5184 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); 5185 std::string str; 5186 raw_string_ostream OS(str); 5187 if (Arr.size() < PaddedSize) { 5188 OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize); 5189 Properties.push_back(OS.str()); 5190 break; 5191 } 5192 Properties.push_back( 5193 getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize))); 5194 Arr = Arr.drop_front(PaddedSize); 5195 } 5196 5197 if (!Arr.empty()) 5198 Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>"); 5199 5200 return Properties; 5201 } 5202 5203 struct GNUAbiTag { 5204 std::string OSName; 5205 std::string ABI; 5206 bool IsValid; 5207 }; 5208 5209 template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) { 5210 typedef typename ELFT::Word Elf_Word; 5211 5212 ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()), 5213 reinterpret_cast<const Elf_Word *>(Desc.end())); 5214 5215 if (Words.size() < 4) 5216 return {"", "", /*IsValid=*/false}; 5217 5218 static const char *OSNames[] = { 5219 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 5220 }; 5221 StringRef OSName = "Unknown"; 5222 if (Words[0] < array_lengthof(OSNames)) 5223 OSName = OSNames[Words[0]]; 5224 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 5225 std::string str; 5226 raw_string_ostream ABI(str); 5227 ABI << Major << "." << Minor << "." << Patch; 5228 return {std::string(OSName), ABI.str(), /*IsValid=*/true}; 5229 } 5230 5231 static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) { 5232 std::string str; 5233 raw_string_ostream OS(str); 5234 for (const auto &B : Desc) 5235 OS << format_hex_no_prefix(B, 2); 5236 return OS.str(); 5237 } 5238 5239 static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) { 5240 return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5241 } 5242 5243 template <typename ELFT> 5244 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 5245 ArrayRef<uint8_t> Desc) { 5246 switch (NoteType) { 5247 default: 5248 return; 5249 case ELF::NT_GNU_ABI_TAG: { 5250 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 5251 if (!AbiTag.IsValid) 5252 OS << " <corrupt GNU_ABI_TAG>"; 5253 else 5254 OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI; 5255 break; 5256 } 5257 case ELF::NT_GNU_BUILD_ID: { 5258 OS << " Build ID: " << getGNUBuildId(Desc); 5259 break; 5260 } 5261 case ELF::NT_GNU_GOLD_VERSION: 5262 OS << " Version: " << getGNUGoldVersion(Desc); 5263 break; 5264 case ELF::NT_GNU_PROPERTY_TYPE_0: 5265 OS << " Properties:"; 5266 for (const auto &Property : getGNUPropertyList<ELFT>(Desc)) 5267 OS << " " << Property << "\n"; 5268 break; 5269 } 5270 OS << '\n'; 5271 } 5272 5273 struct AMDNote { 5274 std::string Type; 5275 std::string Value; 5276 }; 5277 5278 template <typename ELFT> 5279 static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5280 switch (NoteType) { 5281 default: 5282 return {"", ""}; 5283 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 5284 return { 5285 "HSA Metadata", 5286 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; 5287 case ELF::NT_AMD_AMDGPU_ISA: 5288 return { 5289 "ISA Version", 5290 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; 5291 } 5292 } 5293 5294 struct AMDGPUNote { 5295 std::string Type; 5296 std::string Value; 5297 }; 5298 5299 template <typename ELFT> 5300 static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5301 switch (NoteType) { 5302 default: 5303 return {"", ""}; 5304 case ELF::NT_AMDGPU_METADATA: { 5305 auto MsgPackString = 5306 StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5307 msgpack::Document MsgPackDoc; 5308 if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false)) 5309 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"}; 5310 5311 AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true); 5312 if (!Verifier.verify(MsgPackDoc.getRoot())) 5313 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"}; 5314 5315 std::string HSAMetadataString; 5316 raw_string_ostream StrOS(HSAMetadataString); 5317 MsgPackDoc.toYAML(StrOS); 5318 5319 return {"AMDGPU Metadata", StrOS.str()}; 5320 } 5321 } 5322 } 5323 5324 struct CoreFileMapping { 5325 uint64_t Start, End, Offset; 5326 StringRef Filename; 5327 }; 5328 5329 struct CoreNote { 5330 uint64_t PageSize; 5331 std::vector<CoreFileMapping> Mappings; 5332 }; 5333 5334 static Expected<CoreNote> readCoreNote(DataExtractor Desc) { 5335 // Expected format of the NT_FILE note description: 5336 // 1. # of file mappings (call it N) 5337 // 2. Page size 5338 // 3. N (start, end, offset) triples 5339 // 4. N packed filenames (null delimited) 5340 // Each field is an Elf_Addr, except for filenames which are char* strings. 5341 5342 CoreNote Ret; 5343 const int Bytes = Desc.getAddressSize(); 5344 5345 if (!Desc.isValidOffsetForAddress(2)) 5346 return createStringError(object_error::parse_failed, 5347 "malformed note: header too short"); 5348 if (Desc.getData().back() != 0) 5349 return createStringError(object_error::parse_failed, 5350 "malformed note: not NUL terminated"); 5351 5352 uint64_t DescOffset = 0; 5353 uint64_t FileCount = Desc.getAddress(&DescOffset); 5354 Ret.PageSize = Desc.getAddress(&DescOffset); 5355 5356 if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes)) 5357 return createStringError(object_error::parse_failed, 5358 "malformed note: too short for number of files"); 5359 5360 uint64_t FilenamesOffset = 0; 5361 DataExtractor Filenames( 5362 Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes), 5363 Desc.isLittleEndian(), Desc.getAddressSize()); 5364 5365 Ret.Mappings.resize(FileCount); 5366 for (CoreFileMapping &Mapping : Ret.Mappings) { 5367 if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1)) 5368 return createStringError(object_error::parse_failed, 5369 "malformed note: too few filenames"); 5370 Mapping.Start = Desc.getAddress(&DescOffset); 5371 Mapping.End = Desc.getAddress(&DescOffset); 5372 Mapping.Offset = Desc.getAddress(&DescOffset); 5373 Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset); 5374 } 5375 5376 return Ret; 5377 } 5378 5379 template <typename ELFT> 5380 static void printCoreNote(raw_ostream &OS, const CoreNote &Note) { 5381 // Length of "0x<address>" string. 5382 const int FieldWidth = ELFT::Is64Bits ? 18 : 10; 5383 5384 OS << " Page size: " << format_decimal(Note.PageSize, 0) << '\n'; 5385 OS << " " << right_justify("Start", FieldWidth) << " " 5386 << right_justify("End", FieldWidth) << " " 5387 << right_justify("Page Offset", FieldWidth) << '\n'; 5388 for (const CoreFileMapping &Mapping : Note.Mappings) { 5389 OS << " " << format_hex(Mapping.Start, FieldWidth) << " " 5390 << format_hex(Mapping.End, FieldWidth) << " " 5391 << format_hex(Mapping.Offset, FieldWidth) << "\n " 5392 << Mapping.Filename << '\n'; 5393 } 5394 } 5395 5396 template <class ELFT> 5397 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 5398 auto PrintHeader = [&](Optional<StringRef> SecName, 5399 const typename ELFT::Off Offset, 5400 const typename ELFT::Addr Size) { 5401 OS << "Displaying notes found "; 5402 5403 if (SecName) 5404 OS << "in: " << *SecName << "\n"; 5405 else 5406 OS << "at file offset " << format_hex(Offset, 10) << " with length " 5407 << format_hex(Size, 10) << ":\n"; 5408 5409 OS << " Owner Data size \tDescription\n"; 5410 }; 5411 5412 auto ProcessNote = [&](const Elf_Note &Note) { 5413 StringRef Name = Note.getName(); 5414 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 5415 Elf_Word Type = Note.getType(); 5416 5417 // Print the note owner/type. 5418 OS << " " << left_justify(Name, 20) << ' ' 5419 << format_hex(Descriptor.size(), 10) << '\t'; 5420 if (Name == "GNU") { 5421 OS << getGNUNoteTypeName(Type) << '\n'; 5422 } else if (Name == "FreeBSD") { 5423 OS << getFreeBSDNoteTypeName(Type) << '\n'; 5424 } else if (Name == "AMD") { 5425 OS << getAMDNoteTypeName(Type) << '\n'; 5426 } else if (Name == "AMDGPU") { 5427 OS << getAMDGPUNoteTypeName(Type) << '\n'; 5428 } else { 5429 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE 5430 ? getCoreNoteTypeName(Type) 5431 : getGenericNoteTypeName(Type); 5432 if (!NoteType.empty()) 5433 OS << NoteType << '\n'; 5434 else 5435 OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n"; 5436 } 5437 5438 // Print the description, or fallback to printing raw bytes for unknown 5439 // owners. 5440 if (Name == "GNU") { 5441 printGNUNote<ELFT>(OS, Type, Descriptor); 5442 } else if (Name == "AMD") { 5443 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 5444 if (!N.Type.empty()) 5445 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5446 } else if (Name == "AMDGPU") { 5447 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 5448 if (!N.Type.empty()) 5449 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5450 } else if (Name == "CORE") { 5451 if (Type == ELF::NT_FILE) { 5452 DataExtractor DescExtractor(Descriptor, 5453 ELFT::TargetEndianness == support::little, 5454 sizeof(Elf_Addr)); 5455 Expected<CoreNote> Note = readCoreNote(DescExtractor); 5456 if (Note) 5457 printCoreNote<ELFT>(OS, *Note); 5458 else 5459 reportWarning(Note.takeError(), this->FileName); 5460 } 5461 } else if (!Descriptor.empty()) { 5462 OS << " description data:"; 5463 for (uint8_t B : Descriptor) 5464 OS << " " << format("%02x", B); 5465 OS << '\n'; 5466 } 5467 }; 5468 5469 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 5470 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) { 5471 for (const auto &S : Sections) { 5472 if (S.sh_type != SHT_NOTE) 5473 continue; 5474 PrintHeader(expectedToOptional(Obj->getSectionName(&S)), S.sh_offset, 5475 S.sh_size); 5476 Error Err = Error::success(); 5477 for (auto Note : Obj->notes(S, Err)) 5478 ProcessNote(Note); 5479 if (Err) 5480 reportError(std::move(Err), this->FileName); 5481 } 5482 } else { 5483 for (const auto &P : 5484 unwrapOrError(this->FileName, Obj->program_headers())) { 5485 if (P.p_type != PT_NOTE) 5486 continue; 5487 PrintHeader(/*SecName=*/None, P.p_offset, P.p_filesz); 5488 Error Err = Error::success(); 5489 for (auto Note : Obj->notes(P, Err)) 5490 ProcessNote(Note); 5491 if (Err) 5492 reportError(std::move(Err), this->FileName); 5493 } 5494 } 5495 } 5496 5497 template <class ELFT> 5498 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 5499 OS << "printELFLinkerOptions not implemented!\n"; 5500 } 5501 5502 template <class ELFT> 5503 void DumpStyle<ELFT>::printDependentLibsHelper( 5504 const ELFFile<ELFT> *Obj, 5505 function_ref<void(const Elf_Shdr &)> OnSectionStart, 5506 function_ref<void(StringRef, uint64_t)> OnLibEntry) { 5507 auto Warn = [this](unsigned SecNdx, StringRef Msg) { 5508 this->reportUniqueWarning( 5509 createError("SHT_LLVM_DEPENDENT_LIBRARIES section at index " + 5510 Twine(SecNdx) + " is broken: " + Msg)); 5511 }; 5512 5513 unsigned I = -1; 5514 for (const Elf_Shdr &Shdr : cantFail(Obj->sections())) { 5515 ++I; 5516 if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES) 5517 continue; 5518 5519 OnSectionStart(Shdr); 5520 5521 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(&Shdr); 5522 if (!ContentsOrErr) { 5523 Warn(I, toString(ContentsOrErr.takeError())); 5524 continue; 5525 } 5526 5527 ArrayRef<uint8_t> Contents = *ContentsOrErr; 5528 if (!Contents.empty() && Contents.back() != 0) { 5529 Warn(I, "the content is not null-terminated"); 5530 continue; 5531 } 5532 5533 for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) { 5534 StringRef Lib((const char *)I); 5535 OnLibEntry(Lib, I - Contents.begin()); 5536 I += Lib.size() + 1; 5537 } 5538 } 5539 } 5540 5541 template <class ELFT> 5542 void GNUStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) { 5543 bool SectionStarted = false; 5544 struct NameOffset { 5545 StringRef Name; 5546 uint64_t Offset; 5547 }; 5548 std::vector<NameOffset> SecEntries; 5549 NameOffset Current; 5550 auto PrintSection = [&]() { 5551 OS << "Dependent libraries section " << Current.Name << " at offset " 5552 << format_hex(Current.Offset, 1) << " contains " << SecEntries.size() 5553 << " entries:\n"; 5554 for (NameOffset Entry : SecEntries) 5555 OS << " [" << format("%6tx", Entry.Offset) << "] " << Entry.Name 5556 << "\n"; 5557 OS << "\n"; 5558 SecEntries.clear(); 5559 }; 5560 5561 auto OnSectionStart = [&](const Elf_Shdr &Shdr) { 5562 if (SectionStarted) 5563 PrintSection(); 5564 SectionStarted = true; 5565 Current.Offset = Shdr.sh_offset; 5566 Expected<StringRef> Name = Obj->getSectionName(&Shdr); 5567 if (!Name) { 5568 Current.Name = "<?>"; 5569 this->reportUniqueWarning( 5570 createError("cannot get section name of " 5571 "SHT_LLVM_DEPENDENT_LIBRARIES section: " + 5572 toString(Name.takeError()))); 5573 } else { 5574 Current.Name = *Name; 5575 } 5576 }; 5577 auto OnLibEntry = [&](StringRef Lib, uint64_t Offset) { 5578 SecEntries.push_back(NameOffset{Lib, Offset}); 5579 }; 5580 5581 this->printDependentLibsHelper(Obj, OnSectionStart, OnLibEntry); 5582 if (SectionStarted) 5583 PrintSection(); 5584 } 5585 5586 // Used for printing section names in places where possible errors can be 5587 // ignored. 5588 static StringRef getSectionName(const SectionRef &Sec) { 5589 Expected<StringRef> NameOrErr = Sec.getName(); 5590 if (NameOrErr) 5591 return *NameOrErr; 5592 consumeError(NameOrErr.takeError()); 5593 return "<?>"; 5594 } 5595 5596 // Used for printing symbol names in places where possible errors can be 5597 // ignored. 5598 static std::string getSymbolName(const ELFSymbolRef &Sym) { 5599 Expected<StringRef> NameOrErr = Sym.getName(); 5600 if (NameOrErr) 5601 return maybeDemangle(*NameOrErr); 5602 consumeError(NameOrErr.takeError()); 5603 return "<?>"; 5604 } 5605 5606 template <class ELFT> 5607 void DumpStyle<ELFT>::printFunctionStackSize(const ELFObjectFile<ELFT> *Obj, 5608 uint64_t SymValue, 5609 Optional<SectionRef> FunctionSec, 5610 const StringRef SectionName, 5611 DataExtractor Data, 5612 uint64_t *Offset) { 5613 // This function ignores potentially erroneous input, unless it is directly 5614 // related to stack size reporting. 5615 SymbolRef FuncSym; 5616 for (const ELFSymbolRef &Symbol : Obj->symbols()) { 5617 Expected<uint64_t> SymAddrOrErr = Symbol.getAddress(); 5618 if (!SymAddrOrErr) { 5619 consumeError(SymAddrOrErr.takeError()); 5620 continue; 5621 } 5622 if (Expected<uint32_t> SymFlags = Symbol.getFlags()) { 5623 if (*SymFlags & SymbolRef::SF_Undefined) 5624 continue; 5625 } else 5626 consumeError(SymFlags.takeError()); 5627 if (Symbol.getELFType() == ELF::STT_FUNC && *SymAddrOrErr == SymValue) { 5628 // Check if the symbol is in the right section. FunctionSec == None means 5629 // "any section". 5630 if (!FunctionSec || FunctionSec->containsSymbol(Symbol)) { 5631 FuncSym = Symbol; 5632 break; 5633 } 5634 } 5635 } 5636 5637 std::string FuncName = "?"; 5638 // A valid SymbolRef has a non-null object file pointer. 5639 if (FuncSym.BasicSymbolRef::getObject()) 5640 FuncName = getSymbolName(FuncSym); 5641 else 5642 reportWarning( 5643 createError("could not identify function symbol for stack size entry"), 5644 Obj->getFileName()); 5645 5646 // Extract the size. The expectation is that Offset is pointing to the right 5647 // place, i.e. past the function address. 5648 uint64_t PrevOffset = *Offset; 5649 uint64_t StackSize = Data.getULEB128(Offset); 5650 // getULEB128() does not advance Offset if it is not able to extract a valid 5651 // integer. 5652 if (*Offset == PrevOffset) 5653 reportError( 5654 createStringError(object_error::parse_failed, 5655 "could not extract a valid stack size in section %s", 5656 SectionName.data()), 5657 Obj->getFileName()); 5658 5659 printStackSizeEntry(StackSize, FuncName); 5660 } 5661 5662 template <class ELFT> 5663 void GNUStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { 5664 OS.PadToColumn(2); 5665 OS << format_decimal(Size, 11); 5666 OS.PadToColumn(18); 5667 OS << FuncName << "\n"; 5668 } 5669 5670 template <class ELFT> 5671 void DumpStyle<ELFT>::printStackSize(const ELFObjectFile<ELFT> *Obj, 5672 RelocationRef Reloc, 5673 SectionRef FunctionSec, 5674 const StringRef &StackSizeSectionName, 5675 const RelocationResolver &Resolver, 5676 DataExtractor Data) { 5677 // This function ignores potentially erroneous input, unless it is directly 5678 // related to stack size reporting. 5679 object::symbol_iterator RelocSym = Reloc.getSymbol(); 5680 uint64_t RelocSymValue = 0; 5681 StringRef FileStr = Obj->getFileName(); 5682 if (RelocSym != Obj->symbol_end()) { 5683 // Ensure that the relocation symbol is in the function section, i.e. the 5684 // section where the functions whose stack sizes we are reporting are 5685 // located. 5686 auto SectionOrErr = RelocSym->getSection(); 5687 if (!SectionOrErr) { 5688 reportWarning( 5689 createError("cannot identify the section for relocation symbol '" + 5690 getSymbolName(*RelocSym) + "'"), 5691 FileStr); 5692 consumeError(SectionOrErr.takeError()); 5693 } else if (*SectionOrErr != FunctionSec) { 5694 reportWarning(createError("relocation symbol '" + 5695 getSymbolName(*RelocSym) + 5696 "' is not in the expected section"), 5697 FileStr); 5698 // Pretend that the symbol is in the correct section and report its 5699 // stack size anyway. 5700 FunctionSec = **SectionOrErr; 5701 } 5702 5703 Expected<uint64_t> RelocSymValueOrErr = RelocSym->getValue(); 5704 if (RelocSymValueOrErr) 5705 RelocSymValue = *RelocSymValueOrErr; 5706 else 5707 consumeError(RelocSymValueOrErr.takeError()); 5708 } 5709 5710 uint64_t Offset = Reloc.getOffset(); 5711 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) 5712 reportError( 5713 createStringError(object_error::parse_failed, 5714 "found invalid relocation offset into section %s " 5715 "while trying to extract a stack size entry", 5716 StackSizeSectionName.data()), 5717 FileStr); 5718 5719 uint64_t Addend = Data.getAddress(&Offset); 5720 uint64_t SymValue = Resolver(Reloc, RelocSymValue, Addend); 5721 this->printFunctionStackSize(Obj, SymValue, FunctionSec, StackSizeSectionName, 5722 Data, &Offset); 5723 } 5724 5725 template <class ELFT> 5726 void DumpStyle<ELFT>::printNonRelocatableStackSizes( 5727 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) { 5728 // This function ignores potentially erroneous input, unless it is directly 5729 // related to stack size reporting. 5730 const ELFFile<ELFT> *EF = Obj->getELFFile(); 5731 StringRef FileStr = Obj->getFileName(); 5732 for (const SectionRef &Sec : Obj->sections()) { 5733 StringRef SectionName = getSectionName(Sec); 5734 if (SectionName != ".stack_sizes") 5735 continue; 5736 PrintHeader(); 5737 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl()); 5738 ArrayRef<uint8_t> Contents = 5739 unwrapOrError(this->FileName, EF->getSectionContents(ElfSec)); 5740 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr)); 5741 uint64_t Offset = 0; 5742 while (Offset < Contents.size()) { 5743 // The function address is followed by a ULEB representing the stack 5744 // size. Check for an extra byte before we try to process the entry. 5745 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { 5746 reportError( 5747 createStringError( 5748 object_error::parse_failed, 5749 "section %s ended while trying to extract a stack size entry", 5750 SectionName.data()), 5751 FileStr); 5752 } 5753 uint64_t SymValue = Data.getAddress(&Offset); 5754 printFunctionStackSize(Obj, SymValue, /*FunctionSec=*/None, SectionName, 5755 Data, &Offset); 5756 } 5757 } 5758 } 5759 5760 template <class ELFT> 5761 void DumpStyle<ELFT>::printRelocatableStackSizes( 5762 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) { 5763 const ELFFile<ELFT> *EF = Obj->getELFFile(); 5764 5765 // Build a map between stack size sections and their corresponding relocation 5766 // sections. 5767 llvm::MapVector<SectionRef, SectionRef> StackSizeRelocMap; 5768 const SectionRef NullSection{}; 5769 5770 for (const SectionRef &Sec : Obj->sections()) { 5771 StringRef SectionName; 5772 if (Expected<StringRef> NameOrErr = Sec.getName()) 5773 SectionName = *NameOrErr; 5774 else 5775 consumeError(NameOrErr.takeError()); 5776 5777 // A stack size section that we haven't encountered yet is mapped to the 5778 // null section until we find its corresponding relocation section. 5779 if (SectionName == ".stack_sizes") 5780 if (StackSizeRelocMap.count(Sec) == 0) { 5781 StackSizeRelocMap[Sec] = NullSection; 5782 continue; 5783 } 5784 5785 // Check relocation sections if they are relocating contents of a 5786 // stack sizes section. 5787 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl()); 5788 uint32_t SectionType = ElfSec->sh_type; 5789 if (SectionType != ELF::SHT_RELA && SectionType != ELF::SHT_REL) 5790 continue; 5791 5792 Expected<section_iterator> RelSecOrErr = Sec.getRelocatedSection(); 5793 if (!RelSecOrErr) 5794 reportError(createStringError(object_error::parse_failed, 5795 "%s: failed to get a relocated section: %s", 5796 SectionName.data(), 5797 toString(RelSecOrErr.takeError()).c_str()), 5798 Obj->getFileName()); 5799 5800 const Elf_Shdr *ContentsSec = 5801 Obj->getSection((*RelSecOrErr)->getRawDataRefImpl()); 5802 Expected<StringRef> ContentsSectionNameOrErr = 5803 EF->getSectionName(ContentsSec); 5804 if (!ContentsSectionNameOrErr) { 5805 consumeError(ContentsSectionNameOrErr.takeError()); 5806 continue; 5807 } 5808 if (*ContentsSectionNameOrErr != ".stack_sizes") 5809 continue; 5810 // Insert a mapping from the stack sizes section to its relocation section. 5811 StackSizeRelocMap[Obj->toSectionRef(ContentsSec)] = Sec; 5812 } 5813 5814 for (const auto &StackSizeMapEntry : StackSizeRelocMap) { 5815 PrintHeader(); 5816 const SectionRef &StackSizesSec = StackSizeMapEntry.first; 5817 const SectionRef &RelocSec = StackSizeMapEntry.second; 5818 5819 // Warn about stack size sections without a relocation section. 5820 StringRef StackSizeSectionName = getSectionName(StackSizesSec); 5821 if (RelocSec == NullSection) { 5822 reportWarning(createError("section " + StackSizeSectionName + 5823 " does not have a corresponding " 5824 "relocation section"), 5825 Obj->getFileName()); 5826 continue; 5827 } 5828 5829 // A .stack_sizes section header's sh_link field is supposed to point 5830 // to the section that contains the functions whose stack sizes are 5831 // described in it. 5832 const Elf_Shdr *StackSizesELFSec = 5833 Obj->getSection(StackSizesSec.getRawDataRefImpl()); 5834 const SectionRef FunctionSec = Obj->toSectionRef(unwrapOrError( 5835 this->FileName, EF->getSection(StackSizesELFSec->sh_link))); 5836 5837 bool (*IsSupportedFn)(uint64_t); 5838 RelocationResolver Resolver; 5839 std::tie(IsSupportedFn, Resolver) = getRelocationResolver(*Obj); 5840 auto Contents = unwrapOrError(this->FileName, StackSizesSec.getContents()); 5841 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr)); 5842 for (const RelocationRef &Reloc : RelocSec.relocations()) { 5843 if (!IsSupportedFn || !IsSupportedFn(Reloc.getType())) 5844 reportError(createStringError( 5845 object_error::parse_failed, 5846 "unsupported relocation type in section %s: %s", 5847 getSectionName(RelocSec).data(), 5848 EF->getRelocationTypeName(Reloc.getType()).data()), 5849 Obj->getFileName()); 5850 this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName, 5851 Resolver, Data); 5852 } 5853 } 5854 } 5855 5856 template <class ELFT> 5857 void GNUStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) { 5858 bool HeaderHasBeenPrinted = false; 5859 auto PrintHeader = [&]() { 5860 if (HeaderHasBeenPrinted) 5861 return; 5862 OS << "\nStack Sizes:\n"; 5863 OS.PadToColumn(9); 5864 OS << "Size"; 5865 OS.PadToColumn(18); 5866 OS << "Function\n"; 5867 HeaderHasBeenPrinted = true; 5868 }; 5869 5870 // For non-relocatable objects, look directly for sections whose name starts 5871 // with .stack_sizes and process the contents. 5872 if (Obj->isRelocatableObject()) 5873 this->printRelocatableStackSizes(Obj, PrintHeader); 5874 else 5875 this->printNonRelocatableStackSizes(Obj, PrintHeader); 5876 } 5877 5878 template <class ELFT> 5879 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 5880 size_t Bias = ELFT::Is64Bits ? 8 : 0; 5881 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 5882 OS.PadToColumn(2); 5883 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 5884 OS.PadToColumn(11 + Bias); 5885 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 5886 OS.PadToColumn(22 + Bias); 5887 OS << format_hex_no_prefix(*E, 8 + Bias); 5888 OS.PadToColumn(31 + 2 * Bias); 5889 OS << Purpose << "\n"; 5890 }; 5891 5892 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 5893 OS << " Canonical gp value: " 5894 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 5895 5896 OS << " Reserved entries:\n"; 5897 if (ELFT::Is64Bits) 5898 OS << " Address Access Initial Purpose\n"; 5899 else 5900 OS << " Address Access Initial Purpose\n"; 5901 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 5902 if (Parser.getGotModulePointer()) 5903 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 5904 5905 if (!Parser.getLocalEntries().empty()) { 5906 OS << "\n"; 5907 OS << " Local entries:\n"; 5908 if (ELFT::Is64Bits) 5909 OS << " Address Access Initial\n"; 5910 else 5911 OS << " Address Access Initial\n"; 5912 for (auto &E : Parser.getLocalEntries()) 5913 PrintEntry(&E, ""); 5914 } 5915 5916 if (Parser.IsStatic) 5917 return; 5918 5919 if (!Parser.getGlobalEntries().empty()) { 5920 OS << "\n"; 5921 OS << " Global entries:\n"; 5922 if (ELFT::Is64Bits) 5923 OS << " Address Access Initial Sym.Val." 5924 << " Type Ndx Name\n"; 5925 else 5926 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 5927 for (auto &E : Parser.getGlobalEntries()) { 5928 const Elf_Sym *Sym = Parser.getGotSym(&E); 5929 std::string SymName = this->dumper()->getFullSymbolName( 5930 Sym, this->dumper()->getDynamicStringTable(), false); 5931 5932 OS.PadToColumn(2); 5933 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 5934 OS.PadToColumn(11 + Bias); 5935 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 5936 OS.PadToColumn(22 + Bias); 5937 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 5938 OS.PadToColumn(31 + 2 * Bias); 5939 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 5940 OS.PadToColumn(40 + 3 * Bias); 5941 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 5942 OS.PadToColumn(48 + 3 * Bias); 5943 OS << getSymbolSectionNdx(Parser.Obj, Sym, 5944 this->dumper()->dynamic_symbols().begin()); 5945 OS.PadToColumn(52 + 3 * Bias); 5946 OS << SymName << "\n"; 5947 } 5948 } 5949 5950 if (!Parser.getOtherEntries().empty()) 5951 OS << "\n Number of TLS and multi-GOT entries " 5952 << Parser.getOtherEntries().size() << "\n"; 5953 } 5954 5955 template <class ELFT> 5956 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 5957 size_t Bias = ELFT::Is64Bits ? 8 : 0; 5958 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 5959 OS.PadToColumn(2); 5960 OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias); 5961 OS.PadToColumn(11 + Bias); 5962 OS << format_hex_no_prefix(*E, 8 + Bias); 5963 OS.PadToColumn(20 + 2 * Bias); 5964 OS << Purpose << "\n"; 5965 }; 5966 5967 OS << "PLT GOT:\n\n"; 5968 5969 OS << " Reserved entries:\n"; 5970 OS << " Address Initial Purpose\n"; 5971 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 5972 if (Parser.getPltModulePointer()) 5973 PrintEntry(Parser.getPltModulePointer(), "Module pointer"); 5974 5975 if (!Parser.getPltEntries().empty()) { 5976 OS << "\n"; 5977 OS << " Entries:\n"; 5978 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 5979 for (auto &E : Parser.getPltEntries()) { 5980 const Elf_Sym *Sym = Parser.getPltSym(&E); 5981 std::string SymName = this->dumper()->getFullSymbolName( 5982 Sym, this->dumper()->getDynamicStringTable(), false); 5983 5984 OS.PadToColumn(2); 5985 OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias)); 5986 OS.PadToColumn(11 + Bias); 5987 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 5988 OS.PadToColumn(20 + 2 * Bias); 5989 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 5990 OS.PadToColumn(29 + 3 * Bias); 5991 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 5992 OS.PadToColumn(37 + 3 * Bias); 5993 OS << getSymbolSectionNdx(Parser.Obj, Sym, 5994 this->dumper()->dynamic_symbols().begin()); 5995 OS.PadToColumn(41 + 3 * Bias); 5996 OS << SymName << "\n"; 5997 } 5998 } 5999 } 6000 6001 template <class ELFT> 6002 void GNUStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) { 6003 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 6004 const Elf_Shdr *Shdr = 6005 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags"); 6006 if (!Shdr) 6007 return; 6008 6009 ArrayRef<uint8_t> Sec = 6010 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 6011 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) 6012 reportError(createError(".MIPS.abiflags section has a wrong size"), 6013 ObjF->getFileName()); 6014 6015 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 6016 6017 OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n"; 6018 OS << "ISA: MIPS" << int(Flags->isa_level); 6019 if (Flags->isa_rev > 1) 6020 OS << "r" << int(Flags->isa_rev); 6021 OS << "\n"; 6022 OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n"; 6023 OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n"; 6024 OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n"; 6025 OS << "FP ABI: " << printEnum(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)) 6026 << "\n"; 6027 OS << "ISA Extension: " 6028 << printEnum(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n"; 6029 if (Flags->ases == 0) 6030 OS << "ASEs: None\n"; 6031 else 6032 // FIXME: Print each flag on a separate line. 6033 OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags)) 6034 << "\n"; 6035 OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n"; 6036 OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n"; 6037 OS << "\n"; 6038 } 6039 6040 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 6041 const Elf_Ehdr *E = Obj->getHeader(); 6042 { 6043 DictScope D(W, "ElfHeader"); 6044 { 6045 DictScope D(W, "Ident"); 6046 W.printBinary("Magic", makeArrayRef(E->e_ident).slice(ELF::EI_MAG0, 4)); 6047 W.printEnum("Class", E->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 6048 W.printEnum("DataEncoding", E->e_ident[ELF::EI_DATA], 6049 makeArrayRef(ElfDataEncoding)); 6050 W.printNumber("FileVersion", E->e_ident[ELF::EI_VERSION]); 6051 6052 auto OSABI = makeArrayRef(ElfOSABI); 6053 if (E->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 6054 E->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 6055 switch (E->e_machine) { 6056 case ELF::EM_AMDGPU: 6057 OSABI = makeArrayRef(AMDGPUElfOSABI); 6058 break; 6059 case ELF::EM_ARM: 6060 OSABI = makeArrayRef(ARMElfOSABI); 6061 break; 6062 case ELF::EM_TI_C6000: 6063 OSABI = makeArrayRef(C6000ElfOSABI); 6064 break; 6065 } 6066 } 6067 W.printEnum("OS/ABI", E->e_ident[ELF::EI_OSABI], OSABI); 6068 W.printNumber("ABIVersion", E->e_ident[ELF::EI_ABIVERSION]); 6069 W.printBinary("Unused", makeArrayRef(E->e_ident).slice(ELF::EI_PAD)); 6070 } 6071 6072 W.printEnum("Type", E->e_type, makeArrayRef(ElfObjectFileType)); 6073 W.printEnum("Machine", E->e_machine, makeArrayRef(ElfMachineType)); 6074 W.printNumber("Version", E->e_version); 6075 W.printHex("Entry", E->e_entry); 6076 W.printHex("ProgramHeaderOffset", E->e_phoff); 6077 W.printHex("SectionHeaderOffset", E->e_shoff); 6078 if (E->e_machine == EM_MIPS) 6079 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderMipsFlags), 6080 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 6081 unsigned(ELF::EF_MIPS_MACH)); 6082 else if (E->e_machine == EM_AMDGPU) 6083 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 6084 unsigned(ELF::EF_AMDGPU_MACH)); 6085 else if (E->e_machine == EM_RISCV) 6086 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 6087 else 6088 W.printFlags("Flags", E->e_flags); 6089 W.printNumber("HeaderSize", E->e_ehsize); 6090 W.printNumber("ProgramHeaderEntrySize", E->e_phentsize); 6091 W.printNumber("ProgramHeaderCount", E->e_phnum); 6092 W.printNumber("SectionHeaderEntrySize", E->e_shentsize); 6093 W.printString("SectionHeaderCount", 6094 getSectionHeadersNumString(Obj, this->FileName)); 6095 W.printString("StringTableSectionIndex", 6096 getSectionHeaderTableIndexString(Obj, this->FileName)); 6097 } 6098 } 6099 6100 template <class ELFT> 6101 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 6102 DictScope Lists(W, "Groups"); 6103 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName); 6104 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 6105 for (const GroupSection &G : V) { 6106 DictScope D(W, "Group"); 6107 W.printNumber("Name", G.Name, G.ShName); 6108 W.printNumber("Index", G.Index); 6109 W.printNumber("Link", G.Link); 6110 W.printNumber("Info", G.Info); 6111 W.printHex("Type", getGroupType(G.Type), G.Type); 6112 W.startLine() << "Signature: " << G.Signature << "\n"; 6113 6114 ListScope L(W, "Section(s) in group"); 6115 for (const GroupMember &GM : G.Members) { 6116 const GroupSection *MainGroup = Map[GM.Index]; 6117 if (MainGroup != &G) { 6118 W.flush(); 6119 errs() << "Error: " << GM.Name << " (" << GM.Index 6120 << ") in a group " + G.Name + " (" << G.Index 6121 << ") is already in a group " + MainGroup->Name + " (" 6122 << MainGroup->Index << ")\n"; 6123 errs().flush(); 6124 continue; 6125 } 6126 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 6127 } 6128 } 6129 6130 if (V.empty()) 6131 W.startLine() << "There are no group sections in the file.\n"; 6132 } 6133 6134 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 6135 ListScope D(W, "Relocations"); 6136 6137 int SectionNumber = -1; 6138 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 6139 ++SectionNumber; 6140 6141 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 6142 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL && 6143 Sec.sh_type != ELF::SHT_ANDROID_RELA && 6144 Sec.sh_type != ELF::SHT_ANDROID_RELR) 6145 continue; 6146 6147 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec)); 6148 6149 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 6150 W.indent(); 6151 6152 printRelocations(&Sec, Obj); 6153 6154 W.unindent(); 6155 W.startLine() << "}\n"; 6156 } 6157 } 6158 6159 template <class ELFT> 6160 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 6161 const Elf_Shdr *SymTab = 6162 unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link)); 6163 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 6164 unsigned RelNdx = 0; 6165 6166 switch (Sec->sh_type) { 6167 case ELF::SHT_REL: 6168 for (const Elf_Rel &R : unwrapOrError(this->FileName, Obj->rels(Sec))) { 6169 Elf_Rela Rela; 6170 Rela.r_offset = R.r_offset; 6171 Rela.r_info = R.r_info; 6172 Rela.r_addend = 0; 6173 printRelocation(Obj, SecNdx, Rela, ++RelNdx, SymTab); 6174 } 6175 break; 6176 case ELF::SHT_RELA: 6177 for (const Elf_Rela &R : unwrapOrError(this->FileName, Obj->relas(Sec))) 6178 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6179 break; 6180 case ELF::SHT_RELR: 6181 case ELF::SHT_ANDROID_RELR: { 6182 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(Sec)); 6183 if (opts::RawRelr) { 6184 for (const Elf_Relr &R : Relrs) 6185 W.startLine() << W.hex(R) << "\n"; 6186 } else { 6187 std::vector<Elf_Rela> RelrRelas = 6188 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 6189 for (const Elf_Rela &R : RelrRelas) 6190 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6191 } 6192 break; 6193 } 6194 case ELF::SHT_ANDROID_REL: 6195 case ELF::SHT_ANDROID_RELA: 6196 for (const Elf_Rela &R : 6197 unwrapOrError(this->FileName, Obj->android_relas(Sec))) 6198 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6199 break; 6200 } 6201 } 6202 6203 template <class ELFT> 6204 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, unsigned SecIndex, 6205 Elf_Rela Rel, unsigned RelIndex, 6206 const Elf_Shdr *SymTab) { 6207 Expected<std::pair<const typename ELFT::Sym *, std::string>> Target = 6208 this->dumper()->getRelocationTarget(SymTab, Rel); 6209 if (!Target) { 6210 this->reportUniqueWarning(createError( 6211 "unable to print relocation " + Twine(RelIndex) + " in section " + 6212 Twine(SecIndex) + ": " + toString(Target.takeError()))); 6213 return; 6214 } 6215 6216 std::string TargetName = Target->second; 6217 SmallString<32> RelocName; 6218 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 6219 6220 if (opts::ExpandRelocs) { 6221 DictScope Group(W, "Relocation"); 6222 W.printHex("Offset", Rel.r_offset); 6223 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 6224 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 6225 Rel.getSymbol(Obj->isMips64EL())); 6226 W.printHex("Addend", Rel.r_addend); 6227 } else { 6228 raw_ostream &OS = W.startLine(); 6229 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 6230 << (!TargetName.empty() ? TargetName : "-") << " " << W.hex(Rel.r_addend) 6231 << "\n"; 6232 } 6233 } 6234 6235 template <class ELFT> 6236 void LLVMStyle<ELFT>::printSectionHeaders(const ELFO *Obj) { 6237 ListScope SectionsD(W, "Sections"); 6238 6239 int SectionIndex = -1; 6240 std::vector<EnumEntry<unsigned>> FlagsList = 6241 getSectionFlagsForTarget(Obj->getHeader()->e_machine); 6242 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 6243 StringRef Name = "<?>"; 6244 if (Expected<StringRef> SecNameOrErr = 6245 Obj->getSectionName(&Sec, this->dumper()->WarningHandler)) 6246 Name = *SecNameOrErr; 6247 else 6248 this->reportUniqueWarning(SecNameOrErr.takeError()); 6249 6250 DictScope SectionD(W, "Section"); 6251 W.printNumber("Index", ++SectionIndex); 6252 W.printNumber("Name", Name, Sec.sh_name); 6253 W.printHex( 6254 "Type", 6255 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 6256 Sec.sh_type); 6257 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList)); 6258 W.printHex("Address", Sec.sh_addr); 6259 W.printHex("Offset", Sec.sh_offset); 6260 W.printNumber("Size", Sec.sh_size); 6261 W.printNumber("Link", Sec.sh_link); 6262 W.printNumber("Info", Sec.sh_info); 6263 W.printNumber("AddressAlignment", Sec.sh_addralign); 6264 W.printNumber("EntrySize", Sec.sh_entsize); 6265 6266 if (opts::SectionRelocations) { 6267 ListScope D(W, "Relocations"); 6268 printRelocations(&Sec, Obj); 6269 } 6270 6271 if (opts::SectionSymbols) { 6272 ListScope D(W, "Symbols"); 6273 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 6274 StringRef StrTable = 6275 unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*Symtab)); 6276 6277 for (const Elf_Sym &Sym : 6278 unwrapOrError(this->FileName, Obj->symbols(Symtab))) { 6279 const Elf_Shdr *SymSec = unwrapOrError( 6280 this->FileName, 6281 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 6282 if (SymSec == &Sec) 6283 printSymbol( 6284 Obj, &Sym, 6285 unwrapOrError(this->FileName, Obj->symbols(Symtab)).begin(), 6286 StrTable, false, false); 6287 } 6288 } 6289 6290 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 6291 ArrayRef<uint8_t> Data = 6292 unwrapOrError(this->FileName, Obj->getSectionContents(&Sec)); 6293 W.printBinaryBlock( 6294 "SectionData", 6295 StringRef(reinterpret_cast<const char *>(Data.data()), Data.size())); 6296 } 6297 } 6298 } 6299 6300 template <class ELFT> 6301 void LLVMStyle<ELFT>::printSymbolSection(const Elf_Sym *Symbol, 6302 const Elf_Sym *First) { 6303 Expected<unsigned> SectionIndex = 6304 this->dumper()->getSymbolSectionIndex(Symbol, First); 6305 if (!SectionIndex) { 6306 assert(Symbol->st_shndx == SHN_XINDEX && 6307 "getSymbolSectionIndex should only fail due to an invalid " 6308 "SHT_SYMTAB_SHNDX table/reference"); 6309 this->reportUniqueWarning(SectionIndex.takeError()); 6310 W.printHex("Section", "Reserved", SHN_XINDEX); 6311 return; 6312 } 6313 6314 Expected<StringRef> SectionName = 6315 this->dumper()->getSymbolSectionName(Symbol, *SectionIndex); 6316 if (!SectionName) { 6317 // Don't report an invalid section name if the section headers are missing. 6318 // In such situations, all sections will be "invalid". 6319 if (!this->dumper()->getElfObject()->sections().empty()) 6320 this->reportUniqueWarning(SectionName.takeError()); 6321 else 6322 consumeError(SectionName.takeError()); 6323 W.printHex("Section", "<?>", *SectionIndex); 6324 } else { 6325 W.printHex("Section", *SectionName, *SectionIndex); 6326 } 6327 } 6328 6329 template <class ELFT> 6330 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 6331 const Elf_Sym *First, 6332 Optional<StringRef> StrTable, bool IsDynamic, 6333 bool /*NonVisibilityBitsUsed*/) { 6334 std::string FullSymbolName = 6335 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 6336 unsigned char SymbolType = Symbol->getType(); 6337 6338 DictScope D(W, "Symbol"); 6339 W.printNumber("Name", FullSymbolName, Symbol->st_name); 6340 W.printHex("Value", Symbol->st_value); 6341 W.printNumber("Size", Symbol->st_size); 6342 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 6343 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 6344 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 6345 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 6346 else 6347 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 6348 if (Symbol->st_other == 0) 6349 // Usually st_other flag is zero. Do not pollute the output 6350 // by flags enumeration in that case. 6351 W.printNumber("Other", 0); 6352 else { 6353 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 6354 std::end(ElfSymOtherFlags)); 6355 if (Obj->getHeader()->e_machine == EM_MIPS) { 6356 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 6357 // flag overlapped with other ST_MIPS_xxx flags. So consider both 6358 // cases separately. 6359 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 6360 SymOtherFlags.insert(SymOtherFlags.end(), 6361 std::begin(ElfMips16SymOtherFlags), 6362 std::end(ElfMips16SymOtherFlags)); 6363 else 6364 SymOtherFlags.insert(SymOtherFlags.end(), 6365 std::begin(ElfMipsSymOtherFlags), 6366 std::end(ElfMipsSymOtherFlags)); 6367 } 6368 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 6369 } 6370 printSymbolSection(Symbol, First); 6371 } 6372 6373 template <class ELFT> 6374 void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols, 6375 bool PrintDynamicSymbols) { 6376 if (PrintSymbols) 6377 printSymbols(Obj); 6378 if (PrintDynamicSymbols) 6379 printDynamicSymbols(Obj); 6380 } 6381 6382 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 6383 ListScope Group(W, "Symbols"); 6384 this->dumper()->printSymbolsHelper(false); 6385 } 6386 6387 template <class ELFT> 6388 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 6389 ListScope Group(W, "DynamicSymbols"); 6390 this->dumper()->printSymbolsHelper(true); 6391 } 6392 6393 template <class ELFT> void LLVMStyle<ELFT>::printDynamic(const ELFFile<ELFT> *Obj) { 6394 Elf_Dyn_Range Table = this->dumper()->dynamic_table(); 6395 if (Table.empty()) 6396 return; 6397 6398 W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n"; 6399 6400 size_t MaxTagSize = getMaxDynamicTagSize(Obj, Table); 6401 // The "Name/Value" column should be indented from the "Type" column by N 6402 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 6403 // space (1) = -3. 6404 W.startLine() << " Tag" << std::string(ELFT::Is64Bits ? 16 : 8, ' ') 6405 << "Type" << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 6406 6407 std::string ValueFmt = "%-" + std::to_string(MaxTagSize) + "s "; 6408 for (auto Entry : Table) { 6409 uintX_t Tag = Entry.getTag(); 6410 std::string Value = this->dumper()->getDynamicEntry(Tag, Entry.getVal()); 6411 W.startLine() << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10, true) 6412 << " " 6413 << format(ValueFmt.c_str(), 6414 Obj->getDynamicTagAsString(Tag).c_str()) 6415 << Value << "\n"; 6416 } 6417 W.startLine() << "]\n"; 6418 } 6419 6420 template <class ELFT> 6421 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 6422 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 6423 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 6424 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 6425 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 6426 6427 W.startLine() << "Dynamic Relocations {\n"; 6428 W.indent(); 6429 if (DynRelaRegion.Size > 0) { 6430 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 6431 printDynamicRelocation(Obj, Rela); 6432 } 6433 if (DynRelRegion.Size > 0) { 6434 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 6435 Elf_Rela Rela; 6436 Rela.r_offset = Rel.r_offset; 6437 Rela.r_info = Rel.r_info; 6438 Rela.r_addend = 0; 6439 printDynamicRelocation(Obj, Rela); 6440 } 6441 } 6442 6443 if (DynRelrRegion.Size > 0) { 6444 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 6445 std::vector<Elf_Rela> RelrRelas = 6446 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 6447 for (const Elf_Rela &Rela : RelrRelas) 6448 printDynamicRelocation(Obj, Rela); 6449 } 6450 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 6451 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 6452 printDynamicRelocation(Obj, Rela); 6453 else 6454 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 6455 Elf_Rela Rela; 6456 Rela.r_offset = Rel.r_offset; 6457 Rela.r_info = Rel.r_info; 6458 Rela.r_addend = 0; 6459 printDynamicRelocation(Obj, Rela); 6460 } 6461 W.unindent(); 6462 W.startLine() << "}\n"; 6463 } 6464 6465 template <class ELFT> 6466 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 6467 SmallString<32> RelocName; 6468 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 6469 std::string SymbolName = 6470 getSymbolForReloc(Obj, this->FileName, this->dumper(), Rel).Name; 6471 6472 if (opts::ExpandRelocs) { 6473 DictScope Group(W, "Relocation"); 6474 W.printHex("Offset", Rel.r_offset); 6475 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 6476 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 6477 W.printHex("Addend", Rel.r_addend); 6478 } else { 6479 raw_ostream &OS = W.startLine(); 6480 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 6481 << (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Rel.r_addend) 6482 << "\n"; 6483 } 6484 } 6485 6486 template <class ELFT> 6487 void LLVMStyle<ELFT>::printProgramHeaders( 6488 const ELFO *Obj, bool PrintProgramHeaders, 6489 cl::boolOrDefault PrintSectionMapping) { 6490 if (PrintProgramHeaders) 6491 printProgramHeaders(Obj); 6492 if (PrintSectionMapping == cl::BOU_TRUE) 6493 printSectionMapping(Obj); 6494 } 6495 6496 template <class ELFT> 6497 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 6498 ListScope L(W, "ProgramHeaders"); 6499 6500 for (const Elf_Phdr &Phdr : 6501 unwrapOrError(this->FileName, Obj->program_headers())) { 6502 DictScope P(W, "ProgramHeader"); 6503 W.printHex("Type", 6504 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 6505 Phdr.p_type); 6506 W.printHex("Offset", Phdr.p_offset); 6507 W.printHex("VirtualAddress", Phdr.p_vaddr); 6508 W.printHex("PhysicalAddress", Phdr.p_paddr); 6509 W.printNumber("FileSize", Phdr.p_filesz); 6510 W.printNumber("MemSize", Phdr.p_memsz); 6511 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 6512 W.printNumber("Alignment", Phdr.p_align); 6513 } 6514 } 6515 6516 template <class ELFT> 6517 void LLVMStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj, 6518 const Elf_Shdr *Sec) { 6519 ListScope SS(W, "VersionSymbols"); 6520 if (!Sec) 6521 return; 6522 6523 StringRef StrTable; 6524 ArrayRef<Elf_Sym> Syms; 6525 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 6526 this->dumper()->getVersionTable(Sec, &Syms, &StrTable); 6527 if (!VerTableOrErr) { 6528 this->reportUniqueWarning(VerTableOrErr.takeError()); 6529 return; 6530 } 6531 6532 if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size()) 6533 return; 6534 6535 for (size_t I = 0, E = Syms.size(); I < E; ++I) { 6536 DictScope S(W, "Symbol"); 6537 W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION); 6538 W.printString("Name", this->dumper()->getFullSymbolName( 6539 &Syms[I], StrTable, /*IsDynamic=*/true)); 6540 } 6541 } 6542 6543 template <class ELFT> 6544 void LLVMStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 6545 const Elf_Shdr *Sec) { 6546 ListScope SD(W, "VersionDefinitions"); 6547 if (!Sec) 6548 return; 6549 6550 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec); 6551 if (!V) { 6552 this->reportUniqueWarning(V.takeError()); 6553 return; 6554 } 6555 6556 for (const VerDef &D : *V) { 6557 DictScope Def(W, "Definition"); 6558 W.printNumber("Version", D.Version); 6559 W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags)); 6560 W.printNumber("Index", D.Ndx); 6561 W.printNumber("Hash", D.Hash); 6562 W.printString("Name", D.Name.c_str()); 6563 W.printList( 6564 "Predecessors", D.AuxV, 6565 [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); }); 6566 } 6567 } 6568 6569 template <class ELFT> 6570 void LLVMStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj, 6571 const Elf_Shdr *Sec) { 6572 ListScope SD(W, "VersionRequirements"); 6573 if (!Sec) 6574 return; 6575 6576 Expected<std::vector<VerNeed>> V = 6577 this->dumper()->getVersionDependencies(Sec); 6578 if (!V) { 6579 this->reportUniqueWarning(V.takeError()); 6580 return; 6581 } 6582 6583 for (const VerNeed &VN : *V) { 6584 DictScope Entry(W, "Dependency"); 6585 W.printNumber("Version", VN.Version); 6586 W.printNumber("Count", VN.Cnt); 6587 W.printString("FileName", VN.File.c_str()); 6588 6589 ListScope L(W, "Entries"); 6590 for (const VernAux &Aux : VN.AuxV) { 6591 DictScope Entry(W, "Entry"); 6592 W.printNumber("Hash", Aux.Hash); 6593 W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags)); 6594 W.printNumber("Index", Aux.Other); 6595 W.printString("Name", Aux.Name.c_str()); 6596 } 6597 } 6598 } 6599 6600 template <class ELFT> 6601 void LLVMStyle<ELFT>::printHashHistograms(const ELFFile<ELFT> *Obj) { 6602 W.startLine() << "Hash Histogram not implemented!\n"; 6603 } 6604 6605 template <class ELFT> 6606 void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 6607 ListScope L(W, "CGProfile"); 6608 if (!this->dumper()->getDotCGProfileSec()) 6609 return; 6610 6611 Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr = 6612 Obj->template getSectionContentsAsArray<Elf_CGProfile>( 6613 this->dumper()->getDotCGProfileSec()); 6614 if (!CGProfileOrErr) { 6615 this->reportUniqueWarning( 6616 createError("unable to dump the SHT_LLVM_CALL_GRAPH_PROFILE section: " + 6617 toString(CGProfileOrErr.takeError()))); 6618 return; 6619 } 6620 6621 for (const Elf_CGProfile &CGPE : *CGProfileOrErr) { 6622 DictScope D(W, "CGProfileEntry"); 6623 W.printNumber("From", this->dumper()->getStaticSymbolName(CGPE.cgp_from), 6624 CGPE.cgp_from); 6625 W.printNumber("To", this->dumper()->getStaticSymbolName(CGPE.cgp_to), 6626 CGPE.cgp_to); 6627 W.printNumber("Weight", CGPE.cgp_weight); 6628 } 6629 } 6630 6631 static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) { 6632 std::vector<uint64_t> Ret; 6633 const uint8_t *Cur = Data.begin(); 6634 const uint8_t *End = Data.end(); 6635 while (Cur != End) { 6636 unsigned Size; 6637 const char *Err; 6638 Ret.push_back(decodeULEB128(Cur, &Size, End, &Err)); 6639 if (Err) 6640 return createError(Err); 6641 Cur += Size; 6642 } 6643 return Ret; 6644 } 6645 6646 template <class ELFT> 6647 void LLVMStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) { 6648 ListScope L(W, "Addrsig"); 6649 if (!this->dumper()->getDotAddrsigSec()) 6650 return; 6651 ArrayRef<uint8_t> Contents = unwrapOrError( 6652 this->FileName, 6653 Obj->getSectionContents(this->dumper()->getDotAddrsigSec())); 6654 Expected<std::vector<uint64_t>> V = toULEB128Array(Contents); 6655 if (!V) { 6656 reportWarning(V.takeError(), this->FileName); 6657 return; 6658 } 6659 6660 for (uint64_t Sym : *V) { 6661 Expected<std::string> NameOrErr = this->dumper()->getStaticSymbolName(Sym); 6662 if (NameOrErr) { 6663 W.printNumber("Sym", *NameOrErr, Sym); 6664 continue; 6665 } 6666 reportWarning(NameOrErr.takeError(), this->FileName); 6667 W.printNumber("Sym", "<?>", Sym); 6668 } 6669 } 6670 6671 template <typename ELFT> 6672 static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc, 6673 ScopedPrinter &W) { 6674 switch (NoteType) { 6675 default: 6676 return; 6677 case ELF::NT_GNU_ABI_TAG: { 6678 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 6679 if (!AbiTag.IsValid) { 6680 W.printString("ABI", "<corrupt GNU_ABI_TAG>"); 6681 } else { 6682 W.printString("OS", AbiTag.OSName); 6683 W.printString("ABI", AbiTag.ABI); 6684 } 6685 break; 6686 } 6687 case ELF::NT_GNU_BUILD_ID: { 6688 W.printString("Build ID", getGNUBuildId(Desc)); 6689 break; 6690 } 6691 case ELF::NT_GNU_GOLD_VERSION: 6692 W.printString("Version", getGNUGoldVersion(Desc)); 6693 break; 6694 case ELF::NT_GNU_PROPERTY_TYPE_0: 6695 ListScope D(W, "Property"); 6696 for (const auto &Property : getGNUPropertyList<ELFT>(Desc)) 6697 W.printString(Property); 6698 break; 6699 } 6700 } 6701 6702 static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) { 6703 W.printNumber("Page Size", Note.PageSize); 6704 for (const CoreFileMapping &Mapping : Note.Mappings) { 6705 ListScope D(W, "Mapping"); 6706 W.printHex("Start", Mapping.Start); 6707 W.printHex("End", Mapping.End); 6708 W.printHex("Offset", Mapping.Offset); 6709 W.printString("Filename", Mapping.Filename); 6710 } 6711 } 6712 6713 template <class ELFT> 6714 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 6715 ListScope L(W, "Notes"); 6716 6717 auto PrintHeader = [&](Optional<StringRef> SecName, 6718 const typename ELFT::Off Offset, 6719 const typename ELFT::Addr Size) { 6720 W.printString("Name", SecName ? *SecName : "<?>"); 6721 W.printHex("Offset", Offset); 6722 W.printHex("Size", Size); 6723 }; 6724 6725 auto ProcessNote = [&](const Elf_Note &Note) { 6726 DictScope D2(W, "Note"); 6727 StringRef Name = Note.getName(); 6728 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 6729 Elf_Word Type = Note.getType(); 6730 6731 // Print the note owner/type. 6732 W.printString("Owner", Name); 6733 W.printHex("Data size", Descriptor.size()); 6734 if (Name == "GNU") { 6735 W.printString("Type", getGNUNoteTypeName(Type)); 6736 } else if (Name == "FreeBSD") { 6737 W.printString("Type", getFreeBSDNoteTypeName(Type)); 6738 } else if (Name == "AMD") { 6739 W.printString("Type", getAMDNoteTypeName(Type)); 6740 } else if (Name == "AMDGPU") { 6741 W.printString("Type", getAMDGPUNoteTypeName(Type)); 6742 } else { 6743 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE 6744 ? getCoreNoteTypeName(Type) 6745 : getGenericNoteTypeName(Type); 6746 if (!NoteType.empty()) 6747 W.printString("Type", NoteType); 6748 else 6749 W.printString("Type", 6750 "Unknown (" + to_string(format_hex(Type, 10)) + ")"); 6751 } 6752 6753 // Print the description, or fallback to printing raw bytes for unknown 6754 // owners. 6755 if (Name == "GNU") { 6756 printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W); 6757 } else if (Name == "AMD") { 6758 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 6759 if (!N.Type.empty()) 6760 W.printString(N.Type, N.Value); 6761 } else if (Name == "AMDGPU") { 6762 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 6763 if (!N.Type.empty()) 6764 W.printString(N.Type, N.Value); 6765 } else if (Name == "CORE") { 6766 if (Type == ELF::NT_FILE) { 6767 DataExtractor DescExtractor(Descriptor, 6768 ELFT::TargetEndianness == support::little, 6769 sizeof(Elf_Addr)); 6770 Expected<CoreNote> Note = readCoreNote(DescExtractor); 6771 if (Note) 6772 printCoreNoteLLVMStyle(*Note, W); 6773 else 6774 reportWarning(Note.takeError(), this->FileName); 6775 } 6776 } else if (!Descriptor.empty()) { 6777 W.printBinaryBlock("Description data", Descriptor); 6778 } 6779 }; 6780 6781 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 6782 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) { 6783 for (const auto &S : Sections) { 6784 if (S.sh_type != SHT_NOTE) 6785 continue; 6786 DictScope D(W, "NoteSection"); 6787 PrintHeader(expectedToOptional(Obj->getSectionName(&S)), S.sh_offset, 6788 S.sh_size); 6789 Error Err = Error::success(); 6790 for (auto Note : Obj->notes(S, Err)) 6791 ProcessNote(Note); 6792 if (Err) 6793 reportError(std::move(Err), this->FileName); 6794 } 6795 } else { 6796 for (const auto &P : 6797 unwrapOrError(this->FileName, Obj->program_headers())) { 6798 if (P.p_type != PT_NOTE) 6799 continue; 6800 DictScope D(W, "NoteSection"); 6801 PrintHeader(/*SecName=*/None, P.p_offset, P.p_filesz); 6802 Error Err = Error::success(); 6803 for (auto Note : Obj->notes(P, Err)) 6804 ProcessNote(Note); 6805 if (Err) 6806 reportError(std::move(Err), this->FileName); 6807 } 6808 } 6809 } 6810 6811 template <class ELFT> 6812 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 6813 ListScope L(W, "LinkerOptions"); 6814 6815 unsigned I = -1; 6816 for (const Elf_Shdr &Shdr : cantFail(Obj->sections())) { 6817 ++I; 6818 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) 6819 continue; 6820 6821 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(&Shdr); 6822 if (!ContentsOrErr) { 6823 this->reportUniqueWarning( 6824 createError("unable to read the content of the " 6825 "SHT_LLVM_LINKER_OPTIONS section: " + 6826 toString(ContentsOrErr.takeError()))); 6827 continue; 6828 } 6829 if (ContentsOrErr->empty()) 6830 continue; 6831 6832 if (ContentsOrErr->back() != 0) { 6833 this->reportUniqueWarning( 6834 createError("SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + 6835 " is broken: the " 6836 "content is not null-terminated")); 6837 continue; 6838 } 6839 6840 SmallVector<StringRef, 16> Strings; 6841 toStringRef(ContentsOrErr->drop_back()).split(Strings, '\0'); 6842 if (Strings.size() % 2 != 0) { 6843 this->reportUniqueWarning(createError( 6844 "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + 6845 " is broken: an incomplete " 6846 "key-value pair was found. The last possible key was: \"" + 6847 Strings.back() + "\"")); 6848 continue; 6849 } 6850 6851 for (size_t I = 0; I < Strings.size(); I += 2) 6852 W.printString(Strings[I], Strings[I + 1]); 6853 } 6854 } 6855 6856 template <class ELFT> 6857 void LLVMStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) { 6858 ListScope L(W, "DependentLibs"); 6859 this->printDependentLibsHelper( 6860 Obj, [](const Elf_Shdr &) {}, 6861 [this](StringRef Lib, uint64_t) { W.printString(Lib); }); 6862 } 6863 6864 template <class ELFT> 6865 void LLVMStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) { 6866 ListScope L(W, "StackSizes"); 6867 if (Obj->isRelocatableObject()) 6868 this->printRelocatableStackSizes(Obj, []() {}); 6869 else 6870 this->printNonRelocatableStackSizes(Obj, []() {}); 6871 } 6872 6873 template <class ELFT> 6874 void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { 6875 DictScope D(W, "Entry"); 6876 W.printString("Function", FuncName); 6877 W.printHex("Size", Size); 6878 } 6879 6880 template <class ELFT> 6881 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 6882 auto PrintEntry = [&](const Elf_Addr *E) { 6883 W.printHex("Address", Parser.getGotAddress(E)); 6884 W.printNumber("Access", Parser.getGotOffset(E)); 6885 W.printHex("Initial", *E); 6886 }; 6887 6888 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 6889 6890 W.printHex("Canonical gp value", Parser.getGp()); 6891 { 6892 ListScope RS(W, "Reserved entries"); 6893 { 6894 DictScope D(W, "Entry"); 6895 PrintEntry(Parser.getGotLazyResolver()); 6896 W.printString("Purpose", StringRef("Lazy resolver")); 6897 } 6898 6899 if (Parser.getGotModulePointer()) { 6900 DictScope D(W, "Entry"); 6901 PrintEntry(Parser.getGotModulePointer()); 6902 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 6903 } 6904 } 6905 { 6906 ListScope LS(W, "Local entries"); 6907 for (auto &E : Parser.getLocalEntries()) { 6908 DictScope D(W, "Entry"); 6909 PrintEntry(&E); 6910 } 6911 } 6912 6913 if (Parser.IsStatic) 6914 return; 6915 6916 { 6917 ListScope GS(W, "Global entries"); 6918 for (auto &E : Parser.getGlobalEntries()) { 6919 DictScope D(W, "Entry"); 6920 6921 PrintEntry(&E); 6922 6923 const Elf_Sym *Sym = Parser.getGotSym(&E); 6924 W.printHex("Value", Sym->st_value); 6925 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 6926 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin()); 6927 6928 std::string SymName = this->dumper()->getFullSymbolName( 6929 Sym, this->dumper()->getDynamicStringTable(), true); 6930 W.printNumber("Name", SymName, Sym->st_name); 6931 } 6932 } 6933 6934 W.printNumber("Number of TLS and multi-GOT entries", 6935 uint64_t(Parser.getOtherEntries().size())); 6936 } 6937 6938 template <class ELFT> 6939 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 6940 auto PrintEntry = [&](const Elf_Addr *E) { 6941 W.printHex("Address", Parser.getPltAddress(E)); 6942 W.printHex("Initial", *E); 6943 }; 6944 6945 DictScope GS(W, "PLT GOT"); 6946 6947 { 6948 ListScope RS(W, "Reserved entries"); 6949 { 6950 DictScope D(W, "Entry"); 6951 PrintEntry(Parser.getPltLazyResolver()); 6952 W.printString("Purpose", StringRef("PLT lazy resolver")); 6953 } 6954 6955 if (auto E = Parser.getPltModulePointer()) { 6956 DictScope D(W, "Entry"); 6957 PrintEntry(E); 6958 W.printString("Purpose", StringRef("Module pointer")); 6959 } 6960 } 6961 { 6962 ListScope LS(W, "Entries"); 6963 for (auto &E : Parser.getPltEntries()) { 6964 DictScope D(W, "Entry"); 6965 PrintEntry(&E); 6966 6967 const Elf_Sym *Sym = Parser.getPltSym(&E); 6968 W.printHex("Value", Sym->st_value); 6969 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 6970 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin()); 6971 6972 std::string SymName = 6973 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true); 6974 W.printNumber("Name", SymName, Sym->st_name); 6975 } 6976 } 6977 } 6978 6979 template <class ELFT> 6980 void LLVMStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) { 6981 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 6982 const Elf_Shdr *Shdr = 6983 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags"); 6984 if (!Shdr) { 6985 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 6986 return; 6987 } 6988 ArrayRef<uint8_t> Sec = 6989 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 6990 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 6991 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 6992 return; 6993 } 6994 6995 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 6996 6997 raw_ostream &OS = W.getOStream(); 6998 DictScope GS(W, "MIPS ABI Flags"); 6999 7000 W.printNumber("Version", Flags->version); 7001 W.startLine() << "ISA: "; 7002 if (Flags->isa_rev <= 1) 7003 OS << format("MIPS%u", Flags->isa_level); 7004 else 7005 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 7006 OS << "\n"; 7007 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 7008 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 7009 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 7010 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 7011 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 7012 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 7013 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 7014 W.printHex("Flags 2", Flags->flags2); 7015 } 7016