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 (Parser.hasGot()) 2869 ELFDumperStyle->printMipsGOT(Parser); 2870 if (Parser.hasPlt()) 2871 ELFDumperStyle->printMipsPLT(Parser); 2872 break; 2873 } 2874 default: 2875 break; 2876 } 2877 } 2878 2879 namespace { 2880 2881 template <class ELFT> void ELFDumper<ELFT>::printAttributes() { 2882 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 2883 if (!Obj->isLE()) { 2884 W.startLine() << "Attributes not implemented.\n"; 2885 return; 2886 } 2887 2888 const unsigned Machine = Obj->getHeader()->e_machine; 2889 assert((Machine == EM_ARM || Machine == EM_RISCV) && 2890 "Attributes not implemented."); 2891 2892 DictScope BA(W, "BuildAttributes"); 2893 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 2894 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES && 2895 Sec.sh_type != ELF::SHT_RISCV_ATTRIBUTES) 2896 continue; 2897 2898 ArrayRef<uint8_t> Contents = 2899 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(&Sec)); 2900 if (Contents[0] != ELFAttrs::Format_Version) { 2901 reportWarning(createError(Twine("unrecognised FormatVersion: 0x") + 2902 Twine::utohexstr(Contents[0])), 2903 ObjF->getFileName()); 2904 continue; 2905 } 2906 W.printHex("FormatVersion", Contents[0]); 2907 if (Contents.size() == 1) 2908 continue; 2909 2910 // TODO: Delete the redundant FormatVersion check above. 2911 if (Machine == EM_ARM) { 2912 if (Error E = ARMAttributeParser(&W).parse(Contents, support::little)) 2913 reportWarning(std::move(E), ObjF->getFileName()); 2914 } else if (Machine == EM_RISCV) { 2915 if (Error E = RISCVAttributeParser(&W).parse(Contents, support::little)) 2916 reportWarning(std::move(E), ObjF->getFileName()); 2917 } 2918 } 2919 } 2920 2921 template <class ELFT> class MipsGOTParser { 2922 public: 2923 TYPEDEF_ELF_TYPES(ELFT) 2924 using Entry = typename ELFO::Elf_Addr; 2925 using Entries = ArrayRef<Entry>; 2926 2927 const bool IsStatic; 2928 const ELFO * const Obj; 2929 2930 MipsGOTParser(const ELFO *Obj, StringRef FileName, Elf_Dyn_Range DynTable, 2931 Elf_Sym_Range DynSyms); 2932 2933 bool hasGot() const { return !GotEntries.empty(); } 2934 bool hasPlt() const { return !PltEntries.empty(); } 2935 2936 uint64_t getGp() const; 2937 2938 const Entry *getGotLazyResolver() const; 2939 const Entry *getGotModulePointer() const; 2940 const Entry *getPltLazyResolver() const; 2941 const Entry *getPltModulePointer() const; 2942 2943 Entries getLocalEntries() const; 2944 Entries getGlobalEntries() const; 2945 Entries getOtherEntries() const; 2946 Entries getPltEntries() const; 2947 2948 uint64_t getGotAddress(const Entry * E) const; 2949 int64_t getGotOffset(const Entry * E) const; 2950 const Elf_Sym *getGotSym(const Entry *E) const; 2951 2952 uint64_t getPltAddress(const Entry * E) const; 2953 const Elf_Sym *getPltSym(const Entry *E) const; 2954 2955 StringRef getPltStrTable() const { return PltStrTable; } 2956 2957 private: 2958 const Elf_Shdr *GotSec; 2959 size_t LocalNum; 2960 size_t GlobalNum; 2961 2962 const Elf_Shdr *PltSec; 2963 const Elf_Shdr *PltRelSec; 2964 const Elf_Shdr *PltSymTable; 2965 StringRef FileName; 2966 2967 Elf_Sym_Range GotDynSyms; 2968 StringRef PltStrTable; 2969 2970 Entries GotEntries; 2971 Entries PltEntries; 2972 }; 2973 2974 } // end anonymous namespace 2975 2976 template <class ELFT> 2977 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, StringRef FileName, 2978 Elf_Dyn_Range DynTable, 2979 Elf_Sym_Range DynSyms) 2980 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0), 2981 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr), 2982 FileName(FileName) { 2983 // See "Global Offset Table" in Chapter 5 in the following document 2984 // for detailed GOT description. 2985 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 2986 2987 // Find static GOT secton. 2988 if (IsStatic) { 2989 GotSec = findSectionByName(*Obj, FileName, ".got"); 2990 if (!GotSec) 2991 return; 2992 2993 ArrayRef<uint8_t> Content = 2994 unwrapOrError(FileName, Obj->getSectionContents(GotSec)); 2995 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2996 Content.size() / sizeof(Entry)); 2997 LocalNum = GotEntries.size(); 2998 return; 2999 } 3000 3001 // Lookup dynamic table tags which define GOT/PLT layouts. 3002 Optional<uint64_t> DtPltGot; 3003 Optional<uint64_t> DtLocalGotNum; 3004 Optional<uint64_t> DtGotSym; 3005 Optional<uint64_t> DtMipsPltGot; 3006 Optional<uint64_t> DtJmpRel; 3007 for (const auto &Entry : DynTable) { 3008 switch (Entry.getTag()) { 3009 case ELF::DT_PLTGOT: 3010 DtPltGot = Entry.getVal(); 3011 break; 3012 case ELF::DT_MIPS_LOCAL_GOTNO: 3013 DtLocalGotNum = Entry.getVal(); 3014 break; 3015 case ELF::DT_MIPS_GOTSYM: 3016 DtGotSym = Entry.getVal(); 3017 break; 3018 case ELF::DT_MIPS_PLTGOT: 3019 DtMipsPltGot = Entry.getVal(); 3020 break; 3021 case ELF::DT_JMPREL: 3022 DtJmpRel = Entry.getVal(); 3023 break; 3024 } 3025 } 3026 3027 // Find dynamic GOT section. 3028 if (DtPltGot || DtLocalGotNum || DtGotSym) { 3029 if (!DtPltGot) 3030 report_fatal_error("Cannot find PLTGOT dynamic table tag."); 3031 if (!DtLocalGotNum) 3032 report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag."); 3033 if (!DtGotSym) 3034 report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag."); 3035 3036 size_t DynSymTotal = DynSyms.size(); 3037 if (*DtGotSym > DynSymTotal) 3038 reportError( 3039 createError("MIPS_GOTSYM exceeds a number of dynamic symbols"), 3040 FileName); 3041 3042 GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot); 3043 if (!GotSec) 3044 reportError(createError("There is no not empty GOT section at 0x" + 3045 Twine::utohexstr(*DtPltGot)), 3046 FileName); 3047 3048 LocalNum = *DtLocalGotNum; 3049 GlobalNum = DynSymTotal - *DtGotSym; 3050 3051 ArrayRef<uint8_t> Content = 3052 unwrapOrError(FileName, Obj->getSectionContents(GotSec)); 3053 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 3054 Content.size() / sizeof(Entry)); 3055 GotDynSyms = DynSyms.drop_front(*DtGotSym); 3056 } 3057 3058 // Find PLT section. 3059 if (DtMipsPltGot || DtJmpRel) { 3060 if (!DtMipsPltGot) 3061 report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag."); 3062 if (!DtJmpRel) 3063 report_fatal_error("Cannot find JMPREL dynamic table tag."); 3064 3065 PltSec = findNotEmptySectionByAddress(Obj, FileName, * DtMipsPltGot); 3066 if (!PltSec) 3067 report_fatal_error("There is no not empty PLTGOT section at 0x " + 3068 Twine::utohexstr(*DtMipsPltGot)); 3069 3070 PltRelSec = findNotEmptySectionByAddress(Obj, FileName, * DtJmpRel); 3071 if (!PltRelSec) 3072 report_fatal_error("There is no not empty RELPLT section at 0x" + 3073 Twine::utohexstr(*DtJmpRel)); 3074 3075 ArrayRef<uint8_t> PltContent = 3076 unwrapOrError(FileName, Obj->getSectionContents(PltSec)); 3077 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()), 3078 PltContent.size() / sizeof(Entry)); 3079 3080 PltSymTable = unwrapOrError(FileName, Obj->getSection(PltRelSec->sh_link)); 3081 PltStrTable = 3082 unwrapOrError(FileName, Obj->getStringTableForSymtab(*PltSymTable)); 3083 } 3084 } 3085 3086 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 3087 return GotSec->sh_addr + 0x7ff0; 3088 } 3089 3090 template <class ELFT> 3091 const typename MipsGOTParser<ELFT>::Entry * 3092 MipsGOTParser<ELFT>::getGotLazyResolver() const { 3093 return LocalNum > 0 ? &GotEntries[0] : nullptr; 3094 } 3095 3096 template <class ELFT> 3097 const typename MipsGOTParser<ELFT>::Entry * 3098 MipsGOTParser<ELFT>::getGotModulePointer() const { 3099 if (LocalNum < 2) 3100 return nullptr; 3101 const Entry &E = GotEntries[1]; 3102 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 3103 return nullptr; 3104 return &E; 3105 } 3106 3107 template <class ELFT> 3108 typename MipsGOTParser<ELFT>::Entries 3109 MipsGOTParser<ELFT>::getLocalEntries() const { 3110 size_t Skip = getGotModulePointer() ? 2 : 1; 3111 if (LocalNum - Skip <= 0) 3112 return Entries(); 3113 return GotEntries.slice(Skip, LocalNum - Skip); 3114 } 3115 3116 template <class ELFT> 3117 typename MipsGOTParser<ELFT>::Entries 3118 MipsGOTParser<ELFT>::getGlobalEntries() const { 3119 if (GlobalNum == 0) 3120 return Entries(); 3121 return GotEntries.slice(LocalNum, GlobalNum); 3122 } 3123 3124 template <class ELFT> 3125 typename MipsGOTParser<ELFT>::Entries 3126 MipsGOTParser<ELFT>::getOtherEntries() const { 3127 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 3128 if (OtherNum == 0) 3129 return Entries(); 3130 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 3131 } 3132 3133 template <class ELFT> 3134 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 3135 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 3136 return GotSec->sh_addr + Offset; 3137 } 3138 3139 template <class ELFT> 3140 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 3141 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 3142 return Offset - 0x7ff0; 3143 } 3144 3145 template <class ELFT> 3146 const typename MipsGOTParser<ELFT>::Elf_Sym * 3147 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 3148 int64_t Offset = std::distance(GotEntries.data(), E); 3149 return &GotDynSyms[Offset - LocalNum]; 3150 } 3151 3152 template <class ELFT> 3153 const typename MipsGOTParser<ELFT>::Entry * 3154 MipsGOTParser<ELFT>::getPltLazyResolver() const { 3155 return PltEntries.empty() ? nullptr : &PltEntries[0]; 3156 } 3157 3158 template <class ELFT> 3159 const typename MipsGOTParser<ELFT>::Entry * 3160 MipsGOTParser<ELFT>::getPltModulePointer() const { 3161 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 3162 } 3163 3164 template <class ELFT> 3165 typename MipsGOTParser<ELFT>::Entries 3166 MipsGOTParser<ELFT>::getPltEntries() const { 3167 if (PltEntries.size() <= 2) 3168 return Entries(); 3169 return PltEntries.slice(2, PltEntries.size() - 2); 3170 } 3171 3172 template <class ELFT> 3173 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 3174 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 3175 return PltSec->sh_addr + Offset; 3176 } 3177 3178 template <class ELFT> 3179 const typename MipsGOTParser<ELFT>::Elf_Sym * 3180 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 3181 int64_t Offset = std::distance(getPltEntries().data(), E); 3182 if (PltRelSec->sh_type == ELF::SHT_REL) { 3183 Elf_Rel_Range Rels = unwrapOrError(FileName, Obj->rels(PltRelSec)); 3184 return unwrapOrError(FileName, 3185 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 3186 } else { 3187 Elf_Rela_Range Rels = unwrapOrError(FileName, Obj->relas(PltRelSec)); 3188 return unwrapOrError(FileName, 3189 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 3190 } 3191 } 3192 3193 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 3194 {"None", Mips::AFL_EXT_NONE}, 3195 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 3196 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 3197 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 3198 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 3199 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 3200 {"LSI R4010", Mips::AFL_EXT_4010}, 3201 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 3202 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 3203 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 3204 {"MIPS R4650", Mips::AFL_EXT_4650}, 3205 {"MIPS R5900", Mips::AFL_EXT_5900}, 3206 {"MIPS R10000", Mips::AFL_EXT_10000}, 3207 {"NEC VR4100", Mips::AFL_EXT_4100}, 3208 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 3209 {"NEC VR4120", Mips::AFL_EXT_4120}, 3210 {"NEC VR5400", Mips::AFL_EXT_5400}, 3211 {"NEC VR5500", Mips::AFL_EXT_5500}, 3212 {"RMI Xlr", Mips::AFL_EXT_XLR}, 3213 {"Toshiba R3900", Mips::AFL_EXT_3900} 3214 }; 3215 3216 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 3217 {"DSP", Mips::AFL_ASE_DSP}, 3218 {"DSPR2", Mips::AFL_ASE_DSPR2}, 3219 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 3220 {"MCU", Mips::AFL_ASE_MCU}, 3221 {"MDMX", Mips::AFL_ASE_MDMX}, 3222 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 3223 {"MT", Mips::AFL_ASE_MT}, 3224 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 3225 {"VZ", Mips::AFL_ASE_VIRT}, 3226 {"MSA", Mips::AFL_ASE_MSA}, 3227 {"MIPS16", Mips::AFL_ASE_MIPS16}, 3228 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 3229 {"XPA", Mips::AFL_ASE_XPA}, 3230 {"CRC", Mips::AFL_ASE_CRC}, 3231 {"GINV", Mips::AFL_ASE_GINV}, 3232 }; 3233 3234 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 3235 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 3236 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 3237 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 3238 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 3239 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 3240 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 3241 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 3242 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 3243 {"Hard float compat (32-bit CPU, 64-bit FPU)", 3244 Mips::Val_GNU_MIPS_ABI_FP_64A} 3245 }; 3246 3247 static const EnumEntry<unsigned> ElfMipsFlags1[] { 3248 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 3249 }; 3250 3251 static int getMipsRegisterSize(uint8_t Flag) { 3252 switch (Flag) { 3253 case Mips::AFL_REG_NONE: 3254 return 0; 3255 case Mips::AFL_REG_32: 3256 return 32; 3257 case Mips::AFL_REG_64: 3258 return 64; 3259 case Mips::AFL_REG_128: 3260 return 128; 3261 default: 3262 return -1; 3263 } 3264 } 3265 3266 template <class ELFT> 3267 static void printMipsReginfoData(ScopedPrinter &W, 3268 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 3269 W.printHex("GP", Reginfo.ri_gp_value); 3270 W.printHex("General Mask", Reginfo.ri_gprmask); 3271 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 3272 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 3273 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 3274 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 3275 } 3276 3277 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 3278 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3279 const Elf_Shdr *Shdr = findSectionByName(*Obj, ObjF->getFileName(), ".reginfo"); 3280 if (!Shdr) { 3281 W.startLine() << "There is no .reginfo section in the file.\n"; 3282 return; 3283 } 3284 ArrayRef<uint8_t> Sec = 3285 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 3286 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 3287 W.startLine() << "The .reginfo section has a wrong size.\n"; 3288 return; 3289 } 3290 3291 DictScope GS(W, "MIPS RegInfo"); 3292 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 3293 printMipsReginfoData(W, *Reginfo); 3294 } 3295 3296 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 3297 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3298 const Elf_Shdr *Shdr = 3299 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.options"); 3300 if (!Shdr) { 3301 W.startLine() << "There is no .MIPS.options section in the file.\n"; 3302 return; 3303 } 3304 3305 DictScope GS(W, "MIPS Options"); 3306 3307 ArrayRef<uint8_t> Sec = 3308 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 3309 while (!Sec.empty()) { 3310 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 3311 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 3312 return; 3313 } 3314 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 3315 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 3316 switch (O->kind) { 3317 case ODK_REGINFO: 3318 printMipsReginfoData(W, O->getRegInfo()); 3319 break; 3320 default: 3321 W.startLine() << "Unsupported MIPS options tag.\n"; 3322 break; 3323 } 3324 Sec = Sec.slice(O->size); 3325 } 3326 } 3327 3328 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 3329 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 3330 const Elf_Shdr *StackMapSection = nullptr; 3331 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3332 StringRef Name = 3333 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec)); 3334 if (Name == ".llvm_stackmaps") { 3335 StackMapSection = &Sec; 3336 break; 3337 } 3338 } 3339 3340 if (!StackMapSection) 3341 return; 3342 3343 ArrayRef<uint8_t> StackMapContentsArray = unwrapOrError( 3344 ObjF->getFileName(), Obj->getSectionContents(StackMapSection)); 3345 3346 prettyPrintStackMap( 3347 W, StackMapParser<ELFT::TargetEndianness>(StackMapContentsArray)); 3348 } 3349 3350 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 3351 ELFDumperStyle->printGroupSections(ObjF->getELFFile()); 3352 } 3353 3354 template <class ELFT> void ELFDumper<ELFT>::printAddrsig() { 3355 ELFDumperStyle->printAddrsig(ObjF->getELFFile()); 3356 } 3357 3358 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 3359 StringRef Str2) { 3360 OS.PadToColumn(2u); 3361 OS << Str1; 3362 OS.PadToColumn(37u); 3363 OS << Str2 << "\n"; 3364 OS.flush(); 3365 } 3366 3367 template <class ELFT> 3368 static std::string getSectionHeadersNumString(const ELFFile<ELFT> *Obj, 3369 StringRef FileName) { 3370 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader(); 3371 if (ElfHeader->e_shnum != 0) 3372 return to_string(ElfHeader->e_shnum); 3373 3374 ArrayRef<typename ELFT::Shdr> Arr = cantFail(Obj->sections()); 3375 if (Arr.empty()) 3376 return "0"; 3377 return "0 (" + to_string(Arr[0].sh_size) + ")"; 3378 } 3379 3380 template <class ELFT> 3381 static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj, 3382 StringRef FileName) { 3383 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader(); 3384 if (ElfHeader->e_shstrndx != SHN_XINDEX) 3385 return to_string(ElfHeader->e_shstrndx); 3386 3387 ArrayRef<typename ELFT::Shdr> Arr = cantFail(Obj->sections()); 3388 if (Arr.empty()) 3389 return "65535 (corrupt: out of range)"; 3390 return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) + 3391 ")"; 3392 } 3393 3394 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3395 const Elf_Ehdr *e = Obj->getHeader(); 3396 OS << "ELF Header:\n"; 3397 OS << " Magic: "; 3398 std::string Str; 3399 for (int i = 0; i < ELF::EI_NIDENT; i++) 3400 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 3401 OS << "\n"; 3402 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3403 printFields(OS, "Class:", Str); 3404 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 3405 printFields(OS, "Data:", Str); 3406 OS.PadToColumn(2u); 3407 OS << "Version:"; 3408 OS.PadToColumn(37u); 3409 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 3410 if (e->e_version == ELF::EV_CURRENT) 3411 OS << " (current)"; 3412 OS << "\n"; 3413 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 3414 printFields(OS, "OS/ABI:", Str); 3415 printFields(OS, 3416 "ABI Version:", std::to_string(e->e_ident[ELF::EI_ABIVERSION])); 3417 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 3418 printFields(OS, "Type:", Str); 3419 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 3420 printFields(OS, "Machine:", Str); 3421 Str = "0x" + to_hexString(e->e_version); 3422 printFields(OS, "Version:", Str); 3423 Str = "0x" + to_hexString(e->e_entry); 3424 printFields(OS, "Entry point address:", Str); 3425 Str = to_string(e->e_phoff) + " (bytes into file)"; 3426 printFields(OS, "Start of program headers:", Str); 3427 Str = to_string(e->e_shoff) + " (bytes into file)"; 3428 printFields(OS, "Start of section headers:", Str); 3429 std::string ElfFlags; 3430 if (e->e_machine == EM_MIPS) 3431 ElfFlags = 3432 printFlags(e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3433 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3434 unsigned(ELF::EF_MIPS_MACH)); 3435 else if (e->e_machine == EM_RISCV) 3436 ElfFlags = printFlags(e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3437 Str = "0x" + to_hexString(e->e_flags); 3438 if (!ElfFlags.empty()) 3439 Str = Str + ", " + ElfFlags; 3440 printFields(OS, "Flags:", Str); 3441 Str = to_string(e->e_ehsize) + " (bytes)"; 3442 printFields(OS, "Size of this header:", Str); 3443 Str = to_string(e->e_phentsize) + " (bytes)"; 3444 printFields(OS, "Size of program headers:", Str); 3445 Str = to_string(e->e_phnum); 3446 printFields(OS, "Number of program headers:", Str); 3447 Str = to_string(e->e_shentsize) + " (bytes)"; 3448 printFields(OS, "Size of section headers:", Str); 3449 Str = getSectionHeadersNumString(Obj, this->FileName); 3450 printFields(OS, "Number of section headers:", Str); 3451 Str = getSectionHeaderTableIndexString(Obj, this->FileName); 3452 printFields(OS, "Section header string table index:", Str); 3453 } 3454 3455 namespace { 3456 struct GroupMember { 3457 StringRef Name; 3458 uint64_t Index; 3459 }; 3460 3461 struct GroupSection { 3462 StringRef Name; 3463 std::string Signature; 3464 uint64_t ShName; 3465 uint64_t Index; 3466 uint32_t Link; 3467 uint32_t Info; 3468 uint32_t Type; 3469 std::vector<GroupMember> Members; 3470 }; 3471 3472 template <class ELFT> 3473 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj, 3474 StringRef FileName) { 3475 using Elf_Shdr = typename ELFT::Shdr; 3476 using Elf_Sym = typename ELFT::Sym; 3477 using Elf_Word = typename ELFT::Word; 3478 3479 std::vector<GroupSection> Ret; 3480 uint64_t I = 0; 3481 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3482 ++I; 3483 if (Sec.sh_type != ELF::SHT_GROUP) 3484 continue; 3485 3486 const Elf_Shdr *Symtab = 3487 unwrapOrError(FileName, Obj->getSection(Sec.sh_link)); 3488 StringRef StrTable = 3489 unwrapOrError(FileName, Obj->getStringTableForSymtab(*Symtab)); 3490 const Elf_Sym *Sym = unwrapOrError( 3491 FileName, Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 3492 auto Data = unwrapOrError( 3493 FileName, Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 3494 3495 StringRef Name = unwrapOrError(FileName, Obj->getSectionName(&Sec)); 3496 StringRef Signature = StrTable.data() + Sym->st_name; 3497 Ret.push_back({Name, 3498 maybeDemangle(Signature), 3499 Sec.sh_name, 3500 I - 1, 3501 Sec.sh_link, 3502 Sec.sh_info, 3503 Data[0], 3504 {}}); 3505 3506 std::vector<GroupMember> &GM = Ret.back().Members; 3507 for (uint32_t Ndx : Data.slice(1)) { 3508 auto Sec = unwrapOrError(FileName, Obj->getSection(Ndx)); 3509 const StringRef Name = unwrapOrError(FileName, Obj->getSectionName(Sec)); 3510 GM.push_back({Name, Ndx}); 3511 } 3512 } 3513 return Ret; 3514 } 3515 3516 DenseMap<uint64_t, const GroupSection *> 3517 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 3518 DenseMap<uint64_t, const GroupSection *> Ret; 3519 for (const GroupSection &G : Groups) 3520 for (const GroupMember &GM : G.Members) 3521 Ret.insert({GM.Index, &G}); 3522 return Ret; 3523 } 3524 3525 } // namespace 3526 3527 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3528 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName); 3529 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3530 for (const GroupSection &G : V) { 3531 OS << "\n" 3532 << getGroupType(G.Type) << " group section [" 3533 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 3534 << "] contains " << G.Members.size() << " sections:\n" 3535 << " [Index] Name\n"; 3536 for (const GroupMember &GM : G.Members) { 3537 const GroupSection *MainGroup = Map[GM.Index]; 3538 if (MainGroup != &G) { 3539 OS.flush(); 3540 errs() << "Error: section [" << format_decimal(GM.Index, 5) 3541 << "] in group section [" << format_decimal(G.Index, 5) 3542 << "] already in group section [" 3543 << format_decimal(MainGroup->Index, 5) << "]"; 3544 errs().flush(); 3545 continue; 3546 } 3547 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 3548 } 3549 } 3550 3551 if (V.empty()) 3552 OS << "There are no section groups in this file.\n"; 3553 } 3554 3555 template <class ELFT> 3556 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, unsigned SecIndex, 3557 const Elf_Shdr *SymTab, const Elf_Rela &R, 3558 unsigned RelIndex, bool IsRela) { 3559 Expected<std::pair<const typename ELFT::Sym *, std::string>> Target = 3560 this->dumper()->getRelocationTarget(SymTab, R); 3561 if (!Target) 3562 this->reportUniqueWarning(createError( 3563 "unable to print relocation " + Twine(RelIndex) + " in section " + 3564 Twine(SecIndex) + ": " + toString(Target.takeError()))); 3565 else 3566 printRelocation(Obj, /*Sym=*/Target->first, /*Name=*/Target->second, R, 3567 IsRela); 3568 } 3569 3570 template <class ELFT> 3571 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Sym *Sym, 3572 StringRef SymbolName, const Elf_Rela &R, 3573 bool IsRela) { 3574 // First two fields are bit width dependent. The rest of them are fixed width. 3575 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3576 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3577 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3578 3579 Fields[0].Str = to_string(format_hex_no_prefix(R.r_offset, Width)); 3580 Fields[1].Str = to_string(format_hex_no_prefix(R.r_info, Width)); 3581 3582 SmallString<32> RelocName; 3583 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3584 Fields[2].Str = RelocName.c_str(); 3585 3586 if (Sym) 3587 Fields[3].Str = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3588 3589 Fields[4].Str = std::string(SymbolName); 3590 for (const Field &F : Fields) 3591 printField(F); 3592 3593 std::string Addend; 3594 if (IsRela) { 3595 int64_t RelAddend = R.r_addend; 3596 if (!SymbolName.empty()) { 3597 if (R.r_addend < 0) { 3598 Addend = " - "; 3599 RelAddend = std::abs(RelAddend); 3600 } else 3601 Addend = " + "; 3602 } 3603 3604 Addend += to_hexString(RelAddend, false); 3605 } 3606 OS << Addend << "\n"; 3607 } 3608 3609 template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) { 3610 bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA; 3611 bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR; 3612 if (ELFT::Is64Bits) 3613 OS << " "; 3614 else 3615 OS << " "; 3616 if (IsRelr && opts::RawRelr) 3617 OS << "Data "; 3618 else 3619 OS << "Offset"; 3620 if (ELFT::Is64Bits) 3621 OS << " Info Type" 3622 << " Symbol's Value Symbol's Name"; 3623 else 3624 OS << " Info Type Sym. Value Symbol's Name"; 3625 if (IsRela) 3626 OS << " + Addend"; 3627 OS << "\n"; 3628 } 3629 3630 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 3631 bool HasRelocSections = false; 3632 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 3633 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3634 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL && 3635 Sec.sh_type != ELF::SHT_ANDROID_RELA && 3636 Sec.sh_type != ELF::SHT_ANDROID_RELR) 3637 continue; 3638 HasRelocSections = true; 3639 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec)); 3640 unsigned Entries = Sec.getEntityCount(); 3641 std::vector<Elf_Rela> AndroidRelas; 3642 if (Sec.sh_type == ELF::SHT_ANDROID_REL || 3643 Sec.sh_type == ELF::SHT_ANDROID_RELA) { 3644 // Android's packed relocation section needs to be unpacked first 3645 // to get the actual number of entries. 3646 AndroidRelas = unwrapOrError(this->FileName, Obj->android_relas(&Sec)); 3647 Entries = AndroidRelas.size(); 3648 } 3649 std::vector<Elf_Rela> RelrRelas; 3650 if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR || 3651 Sec.sh_type == ELF::SHT_ANDROID_RELR)) { 3652 // .relr.dyn relative relocation section needs to be unpacked first 3653 // to get the actual number of entries. 3654 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(&Sec)); 3655 RelrRelas = unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 3656 Entries = RelrRelas.size(); 3657 } 3658 uintX_t Offset = Sec.sh_offset; 3659 OS << "\nRelocation section '" << Name << "' at offset 0x" 3660 << to_hexString(Offset, false) << " contains " << Entries 3661 << " entries:\n"; 3662 printRelocHeader(Sec.sh_type); 3663 const Elf_Shdr *SymTab = 3664 unwrapOrError(this->FileName, Obj->getSection(Sec.sh_link)); 3665 unsigned SecNdx = &Sec - &cantFail(Obj->sections()).front(); 3666 unsigned RelNdx = 0; 3667 3668 switch (Sec.sh_type) { 3669 case ELF::SHT_REL: 3670 for (const auto &R : unwrapOrError(this->FileName, Obj->rels(&Sec))) { 3671 Elf_Rela Rela; 3672 Rela.r_offset = R.r_offset; 3673 Rela.r_info = R.r_info; 3674 Rela.r_addend = 0; 3675 printRelocation(Obj, SecNdx, SymTab, Rela, ++RelNdx, false); 3676 } 3677 break; 3678 case ELF::SHT_RELA: 3679 for (const auto &R : unwrapOrError(this->FileName, Obj->relas(&Sec))) 3680 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, true); 3681 break; 3682 case ELF::SHT_RELR: 3683 case ELF::SHT_ANDROID_RELR: 3684 if (opts::RawRelr) 3685 for (const auto &R : unwrapOrError(this->FileName, Obj->relrs(&Sec))) 3686 OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) 3687 << "\n"; 3688 else 3689 for (const auto &R : RelrRelas) 3690 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, false); 3691 break; 3692 case ELF::SHT_ANDROID_REL: 3693 case ELF::SHT_ANDROID_RELA: 3694 for (const auto &R : AndroidRelas) 3695 printRelocation(Obj, SecNdx, SymTab, R, ++RelNdx, 3696 Sec.sh_type == ELF::SHT_ANDROID_RELA); 3697 break; 3698 } 3699 } 3700 if (!HasRelocSections) 3701 OS << "\nThere are no relocations in this file.\n"; 3702 } 3703 3704 // Print the offset of a particular section from anyone of the ranges: 3705 // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER]. 3706 // If 'Type' does not fall within any of those ranges, then a string is 3707 // returned as '<unknown>' followed by the type value. 3708 static std::string getSectionTypeOffsetString(unsigned Type) { 3709 if (Type >= SHT_LOOS && Type <= SHT_HIOS) 3710 return "LOOS+0x" + to_hexString(Type - SHT_LOOS); 3711 else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC) 3712 return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC); 3713 else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER) 3714 return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER); 3715 return "0x" + to_hexString(Type) + ": <unknown>"; 3716 } 3717 3718 static std::string getSectionTypeString(unsigned Arch, unsigned Type) { 3719 using namespace ELF; 3720 3721 switch (Arch) { 3722 case EM_ARM: 3723 switch (Type) { 3724 case SHT_ARM_EXIDX: 3725 return "ARM_EXIDX"; 3726 case SHT_ARM_PREEMPTMAP: 3727 return "ARM_PREEMPTMAP"; 3728 case SHT_ARM_ATTRIBUTES: 3729 return "ARM_ATTRIBUTES"; 3730 case SHT_ARM_DEBUGOVERLAY: 3731 return "ARM_DEBUGOVERLAY"; 3732 case SHT_ARM_OVERLAYSECTION: 3733 return "ARM_OVERLAYSECTION"; 3734 } 3735 break; 3736 case EM_X86_64: 3737 switch (Type) { 3738 case SHT_X86_64_UNWIND: 3739 return "X86_64_UNWIND"; 3740 } 3741 break; 3742 case EM_MIPS: 3743 case EM_MIPS_RS3_LE: 3744 switch (Type) { 3745 case SHT_MIPS_REGINFO: 3746 return "MIPS_REGINFO"; 3747 case SHT_MIPS_OPTIONS: 3748 return "MIPS_OPTIONS"; 3749 case SHT_MIPS_DWARF: 3750 return "MIPS_DWARF"; 3751 case SHT_MIPS_ABIFLAGS: 3752 return "MIPS_ABIFLAGS"; 3753 } 3754 break; 3755 case EM_RISCV: 3756 switch (Type) { 3757 case SHT_RISCV_ATTRIBUTES: 3758 return "RISCV_ATTRIBUTES"; 3759 } 3760 } 3761 switch (Type) { 3762 case SHT_NULL: 3763 return "NULL"; 3764 case SHT_PROGBITS: 3765 return "PROGBITS"; 3766 case SHT_SYMTAB: 3767 return "SYMTAB"; 3768 case SHT_STRTAB: 3769 return "STRTAB"; 3770 case SHT_RELA: 3771 return "RELA"; 3772 case SHT_HASH: 3773 return "HASH"; 3774 case SHT_DYNAMIC: 3775 return "DYNAMIC"; 3776 case SHT_NOTE: 3777 return "NOTE"; 3778 case SHT_NOBITS: 3779 return "NOBITS"; 3780 case SHT_REL: 3781 return "REL"; 3782 case SHT_SHLIB: 3783 return "SHLIB"; 3784 case SHT_DYNSYM: 3785 return "DYNSYM"; 3786 case SHT_INIT_ARRAY: 3787 return "INIT_ARRAY"; 3788 case SHT_FINI_ARRAY: 3789 return "FINI_ARRAY"; 3790 case SHT_PREINIT_ARRAY: 3791 return "PREINIT_ARRAY"; 3792 case SHT_GROUP: 3793 return "GROUP"; 3794 case SHT_SYMTAB_SHNDX: 3795 return "SYMTAB SECTION INDICES"; 3796 case SHT_ANDROID_REL: 3797 return "ANDROID_REL"; 3798 case SHT_ANDROID_RELA: 3799 return "ANDROID_RELA"; 3800 case SHT_RELR: 3801 case SHT_ANDROID_RELR: 3802 return "RELR"; 3803 case SHT_LLVM_ODRTAB: 3804 return "LLVM_ODRTAB"; 3805 case SHT_LLVM_LINKER_OPTIONS: 3806 return "LLVM_LINKER_OPTIONS"; 3807 case SHT_LLVM_CALL_GRAPH_PROFILE: 3808 return "LLVM_CALL_GRAPH_PROFILE"; 3809 case SHT_LLVM_ADDRSIG: 3810 return "LLVM_ADDRSIG"; 3811 case SHT_LLVM_DEPENDENT_LIBRARIES: 3812 return "LLVM_DEPENDENT_LIBRARIES"; 3813 case SHT_LLVM_SYMPART: 3814 return "LLVM_SYMPART"; 3815 case SHT_LLVM_PART_EHDR: 3816 return "LLVM_PART_EHDR"; 3817 case SHT_LLVM_PART_PHDR: 3818 return "LLVM_PART_PHDR"; 3819 // FIXME: Parse processor specific GNU attributes 3820 case SHT_GNU_ATTRIBUTES: 3821 return "ATTRIBUTES"; 3822 case SHT_GNU_HASH: 3823 return "GNU_HASH"; 3824 case SHT_GNU_verdef: 3825 return "VERDEF"; 3826 case SHT_GNU_verneed: 3827 return "VERNEED"; 3828 case SHT_GNU_versym: 3829 return "VERSYM"; 3830 default: 3831 return getSectionTypeOffsetString(Type); 3832 } 3833 return ""; 3834 } 3835 3836 static void printSectionDescription(formatted_raw_ostream &OS, 3837 unsigned EMachine) { 3838 OS << "Key to Flags:\n"; 3839 OS << " W (write), A (alloc), X (execute), M (merge), S (strings), I " 3840 "(info),\n"; 3841 OS << " L (link order), O (extra OS processing required), G (group), T " 3842 "(TLS),\n"; 3843 OS << " C (compressed), x (unknown), o (OS specific), E (exclude),\n"; 3844 3845 if (EMachine == EM_X86_64) 3846 OS << " l (large), "; 3847 else if (EMachine == EM_ARM) 3848 OS << " y (purecode), "; 3849 else 3850 OS << " "; 3851 3852 OS << "p (processor specific)\n"; 3853 } 3854 3855 template <class ELFT> 3856 void GNUStyle<ELFT>::printSectionHeaders(const ELFO *Obj) { 3857 unsigned Bias = ELFT::Is64Bits ? 0 : 8; 3858 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 3859 OS << "There are " << to_string(Sections.size()) 3860 << " section headers, starting at offset " 3861 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 3862 OS << "Section Headers:\n"; 3863 Field Fields[11] = { 3864 {"[Nr]", 2}, {"Name", 7}, {"Type", 25}, 3865 {"Address", 41}, {"Off", 58 - Bias}, {"Size", 65 - Bias}, 3866 {"ES", 72 - Bias}, {"Flg", 75 - Bias}, {"Lk", 79 - Bias}, 3867 {"Inf", 82 - Bias}, {"Al", 86 - Bias}}; 3868 for (auto &F : Fields) 3869 printField(F); 3870 OS << "\n"; 3871 3872 StringRef SecStrTable; 3873 if (Expected<StringRef> SecStrTableOrErr = 3874 Obj->getSectionStringTable(Sections, this->dumper()->WarningHandler)) 3875 SecStrTable = *SecStrTableOrErr; 3876 else 3877 this->reportUniqueWarning(SecStrTableOrErr.takeError()); 3878 3879 size_t SectionIndex = 0; 3880 for (const Elf_Shdr &Sec : Sections) { 3881 Fields[0].Str = to_string(SectionIndex); 3882 if (SecStrTable.empty()) 3883 Fields[1].Str = "<no-strings>"; 3884 else 3885 Fields[1].Str = std::string(unwrapOrError<StringRef>( 3886 this->FileName, Obj->getSectionName(&Sec, SecStrTable))); 3887 Fields[2].Str = 3888 getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 3889 Fields[3].Str = 3890 to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8)); 3891 Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 3892 Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 3893 Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 3894 Fields[7].Str = getGNUFlags(Obj->getHeader()->e_machine, Sec.sh_flags); 3895 Fields[8].Str = to_string(Sec.sh_link); 3896 Fields[9].Str = to_string(Sec.sh_info); 3897 Fields[10].Str = to_string(Sec.sh_addralign); 3898 3899 OS.PadToColumn(Fields[0].Column); 3900 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 3901 for (int i = 1; i < 7; i++) 3902 printField(Fields[i]); 3903 OS.PadToColumn(Fields[7].Column); 3904 OS << right_justify(Fields[7].Str, 3); 3905 OS.PadToColumn(Fields[8].Column); 3906 OS << right_justify(Fields[8].Str, 2); 3907 OS.PadToColumn(Fields[9].Column); 3908 OS << right_justify(Fields[9].Str, 3); 3909 OS.PadToColumn(Fields[10].Column); 3910 OS << right_justify(Fields[10].Str, 2); 3911 OS << "\n"; 3912 ++SectionIndex; 3913 } 3914 printSectionDescription(OS, Obj->getHeader()->e_machine); 3915 } 3916 3917 template <class ELFT> 3918 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 3919 size_t Entries, 3920 bool NonVisibilityBitsUsed) { 3921 if (!Name.empty()) 3922 OS << "\nSymbol table '" << Name << "'"; 3923 else 3924 OS << "\nSymbol table for image"; 3925 OS << " contains " << Entries << " entries:\n"; 3926 3927 if (ELFT::Is64Bits) 3928 OS << " Num: Value Size Type Bind Vis"; 3929 else 3930 OS << " Num: Value Size Type Bind Vis"; 3931 3932 if (NonVisibilityBitsUsed) 3933 OS << " "; 3934 OS << " Ndx Name\n"; 3935 } 3936 3937 template <class ELFT> 3938 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 3939 const Elf_Sym *Symbol, 3940 const Elf_Sym *FirstSym) { 3941 unsigned SectionIndex = Symbol->st_shndx; 3942 switch (SectionIndex) { 3943 case ELF::SHN_UNDEF: 3944 return "UND"; 3945 case ELF::SHN_ABS: 3946 return "ABS"; 3947 case ELF::SHN_COMMON: 3948 return "COM"; 3949 case ELF::SHN_XINDEX: { 3950 Expected<uint32_t> IndexOrErr = object::getExtendedSymbolTableIndex<ELFT>( 3951 Symbol, FirstSym, this->dumper()->getShndxTable()); 3952 if (!IndexOrErr) { 3953 assert(Symbol->st_shndx == SHN_XINDEX && 3954 "getSymbolSectionIndex should only fail due to an invalid " 3955 "SHT_SYMTAB_SHNDX table/reference"); 3956 this->reportUniqueWarning(IndexOrErr.takeError()); 3957 return "RSV[0xffff]"; 3958 } 3959 return to_string(format_decimal(*IndexOrErr, 3)); 3960 } 3961 default: 3962 // Find if: 3963 // Processor specific 3964 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 3965 return std::string("PRC[0x") + 3966 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3967 // OS specific 3968 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 3969 return std::string("OS[0x") + 3970 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3971 // Architecture reserved: 3972 if (SectionIndex >= ELF::SHN_LORESERVE && 3973 SectionIndex <= ELF::SHN_HIRESERVE) 3974 return std::string("RSV[0x") + 3975 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 3976 // A normal section with an index 3977 return to_string(format_decimal(SectionIndex, 3)); 3978 } 3979 } 3980 3981 template <class ELFT> 3982 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3983 const Elf_Sym *FirstSym, 3984 Optional<StringRef> StrTable, bool IsDynamic, 3985 bool NonVisibilityBitsUsed) { 3986 static int Idx = 0; 3987 static bool Dynamic = true; 3988 3989 // If this function was called with a different value from IsDynamic 3990 // from last call, happens when we move from dynamic to static symbol 3991 // table, "Num" field should be reset. 3992 if (!Dynamic != !IsDynamic) { 3993 Idx = 0; 3994 Dynamic = false; 3995 } 3996 3997 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3998 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 3999 31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias}; 4000 Fields[0].Str = to_string(format_decimal(Idx++, 6)) + ":"; 4001 Fields[1].Str = to_string( 4002 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); 4003 Fields[2].Str = to_string(format_decimal(Symbol->st_size, 5)); 4004 4005 unsigned char SymbolType = Symbol->getType(); 4006 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4007 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4008 Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4009 else 4010 Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 4011 4012 Fields[4].Str = 4013 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4014 Fields[5].Str = 4015 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities)); 4016 if (Symbol->st_other & ~0x3) 4017 Fields[5].Str += 4018 " [<other: " + to_string(format_hex(Symbol->st_other, 2)) + ">]"; 4019 4020 Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0; 4021 Fields[6].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym); 4022 4023 Fields[7].Str = 4024 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 4025 for (auto &Entry : Fields) 4026 printField(Entry); 4027 OS << "\n"; 4028 } 4029 4030 template <class ELFT> 4031 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 4032 uint32_t Sym, StringRef StrTable, 4033 uint32_t Bucket) { 4034 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4035 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 4036 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 4037 Fields[0].Str = to_string(format_decimal(Sym, 5)); 4038 Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":"; 4039 4040 const auto Symbol = FirstSym + Sym; 4041 Fields[2].Str = to_string( 4042 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8)); 4043 Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5)); 4044 4045 unsigned char SymbolType = Symbol->getType(); 4046 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4047 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4048 Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4049 else 4050 Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 4051 4052 Fields[5].Str = 4053 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4054 Fields[6].Str = 4055 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities)); 4056 Fields[7].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym); 4057 Fields[8].Str = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 4058 4059 for (auto &Entry : Fields) 4060 printField(Entry); 4061 OS << "\n"; 4062 } 4063 4064 template <class ELFT> 4065 void GNUStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols, 4066 bool PrintDynamicSymbols) { 4067 if (!PrintSymbols && !PrintDynamicSymbols) 4068 return; 4069 // GNU readelf prints both the .dynsym and .symtab with --symbols. 4070 this->dumper()->printSymbolsHelper(true); 4071 if (PrintSymbols) 4072 this->dumper()->printSymbolsHelper(false); 4073 } 4074 4075 template <class ELFT> 4076 void GNUStyle<ELFT>::printHashTableSymbols(const ELFO *Obj, 4077 const Elf_Hash &SysVHash) { 4078 StringRef StringTable = this->dumper()->getDynamicStringTable(); 4079 if (StringTable.empty()) 4080 return; 4081 4082 if (ELFT::Is64Bits) 4083 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4084 else 4085 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4086 OS << "\n"; 4087 4088 Elf_Sym_Range DynSyms = this->dumper()->dynamic_symbols(); 4089 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 4090 if (!FirstSym) { 4091 Optional<DynRegionInfo> DynSymRegion = this->dumper()->getDynSymRegion(); 4092 this->reportUniqueWarning( 4093 createError(Twine("unable to print symbols for the .hash table: the " 4094 "dynamic symbol table ") + 4095 (DynSymRegion ? "is empty" : "was not found"))); 4096 return; 4097 } 4098 4099 auto Buckets = SysVHash.buckets(); 4100 auto Chains = SysVHash.chains(); 4101 for (uint32_t Buc = 0; Buc < SysVHash.nbucket; Buc++) { 4102 if (Buckets[Buc] == ELF::STN_UNDEF) 4103 continue; 4104 std::vector<bool> Visited(SysVHash.nchain); 4105 for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash.nchain; Ch = Chains[Ch]) { 4106 if (Ch == ELF::STN_UNDEF) 4107 break; 4108 4109 if (Visited[Ch]) { 4110 reportWarning(createError(".hash section is invalid: bucket " + 4111 Twine(Ch) + 4112 ": a cycle was detected in the linked chain"), 4113 this->FileName); 4114 break; 4115 } 4116 4117 printHashedSymbol(Obj, FirstSym, Ch, StringTable, Buc); 4118 Visited[Ch] = true; 4119 } 4120 } 4121 } 4122 4123 template <class ELFT> 4124 void GNUStyle<ELFT>::printGnuHashTableSymbols(const ELFO *Obj, 4125 const Elf_GnuHash &GnuHash) { 4126 StringRef StringTable = this->dumper()->getDynamicStringTable(); 4127 if (StringTable.empty()) 4128 return; 4129 4130 Elf_Sym_Range DynSyms = this->dumper()->dynamic_symbols(); 4131 const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0]; 4132 if (!FirstSym) { 4133 Optional<DynRegionInfo> DynSymRegion = this->dumper()->getDynSymRegion(); 4134 this->reportUniqueWarning(createError( 4135 Twine("unable to print symbols for the .gnu.hash table: the " 4136 "dynamic symbol table ") + 4137 (DynSymRegion ? "is empty" : "was not found"))); 4138 return; 4139 } 4140 4141 ArrayRef<Elf_Word> Buckets = GnuHash.buckets(); 4142 for (uint32_t Buc = 0; Buc < GnuHash.nbuckets; Buc++) { 4143 if (Buckets[Buc] == ELF::STN_UNDEF) 4144 continue; 4145 uint32_t Index = Buckets[Buc]; 4146 uint32_t GnuHashable = Index - GnuHash.symndx; 4147 // Print whole chain 4148 while (true) { 4149 printHashedSymbol(Obj, FirstSym, Index++, StringTable, Buc); 4150 // Chain ends at symbol with stopper bit 4151 if ((GnuHash.values(DynSyms.size())[GnuHashable++] & 1) == 1) 4152 break; 4153 } 4154 } 4155 } 4156 4157 template <class ELFT> void GNUStyle<ELFT>::printHashSymbols(const ELFO *Obj) { 4158 if (const Elf_Hash *SysVHash = this->dumper()->getHashTable()) { 4159 OS << "\n Symbol table of .hash for image:\n"; 4160 if (Error E = checkHashTable<ELFT>(Obj, SysVHash)) 4161 this->reportUniqueWarning(std::move(E)); 4162 else 4163 printHashTableSymbols(Obj, *SysVHash); 4164 } 4165 4166 // Try printing the .gnu.hash table. 4167 if (const Elf_GnuHash *GnuHash = this->dumper()->getGnuHashTable()) { 4168 OS << "\n Symbol table of .gnu.hash for image:\n"; 4169 if (ELFT::Is64Bits) 4170 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4171 else 4172 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 4173 OS << "\n"; 4174 4175 if (Error E = checkGNUHashTable<ELFT>(Obj, GnuHash)) 4176 this->reportUniqueWarning(std::move(E)); 4177 else 4178 printGnuHashTableSymbols(Obj, *GnuHash); 4179 } 4180 } 4181 4182 static inline std::string printPhdrFlags(unsigned Flag) { 4183 std::string Str; 4184 Str = (Flag & PF_R) ? "R" : " "; 4185 Str += (Flag & PF_W) ? "W" : " "; 4186 Str += (Flag & PF_X) ? "E" : " "; 4187 return Str; 4188 } 4189 4190 template <class ELFT> 4191 static bool checkTLSSections(const typename ELFT::Phdr &Phdr, 4192 const typename ELFT::Shdr &Sec) { 4193 if (Sec.sh_flags & ELF::SHF_TLS) { 4194 // .tbss must only be shown in the PT_TLS segment. 4195 if (Sec.sh_type == ELF::SHT_NOBITS) 4196 return Phdr.p_type == ELF::PT_TLS; 4197 4198 // SHF_TLS sections are only shown in PT_TLS, PT_LOAD or PT_GNU_RELRO 4199 // segments. 4200 return (Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 4201 (Phdr.p_type == ELF::PT_GNU_RELRO); 4202 } 4203 4204 // PT_TLS must only have SHF_TLS sections. 4205 return Phdr.p_type != ELF::PT_TLS; 4206 } 4207 4208 template <class ELFT> 4209 static bool checkOffsets(const typename ELFT::Phdr &Phdr, 4210 const typename ELFT::Shdr &Sec) { 4211 // SHT_NOBITS sections don't need to have an offset inside the segment. 4212 if (Sec.sh_type == ELF::SHT_NOBITS) 4213 return true; 4214 4215 if (Sec.sh_offset < Phdr.p_offset) 4216 return false; 4217 4218 // Only non-empty sections can be at the end of a segment. 4219 if (Sec.sh_size == 0) 4220 return (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz); 4221 return Sec.sh_offset + Sec.sh_size <= Phdr.p_offset + Phdr.p_filesz; 4222 } 4223 4224 // Check that an allocatable section belongs to a virtual address 4225 // space of a segment. 4226 template <class ELFT> 4227 static bool checkVMA(const typename ELFT::Phdr &Phdr, 4228 const typename ELFT::Shdr &Sec) { 4229 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 4230 return true; 4231 4232 if (Sec.sh_addr < Phdr.p_vaddr) 4233 return false; 4234 4235 bool IsTbss = 4236 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 4237 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties. 4238 bool IsTbssInNonTLS = IsTbss && Phdr.p_type != ELF::PT_TLS; 4239 // Only non-empty sections can be at the end of a segment. 4240 if (Sec.sh_size == 0 || IsTbssInNonTLS) 4241 return Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz; 4242 return Sec.sh_addr + Sec.sh_size <= Phdr.p_vaddr + Phdr.p_memsz; 4243 } 4244 4245 template <class ELFT> 4246 static bool checkPTDynamic(const typename ELFT::Phdr &Phdr, 4247 const typename ELFT::Shdr &Sec) { 4248 if (Phdr.p_type != ELF::PT_DYNAMIC || Phdr.p_memsz == 0 || Sec.sh_size != 0) 4249 return true; 4250 4251 // We get here when we have an empty section. Only non-empty sections can be 4252 // at the start or at the end of PT_DYNAMIC. 4253 // Is section within the phdr both based on offset and VMA? 4254 bool CheckOffset = (Sec.sh_type == ELF::SHT_NOBITS) || 4255 (Sec.sh_offset > Phdr.p_offset && 4256 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz); 4257 bool CheckVA = !(Sec.sh_flags & ELF::SHF_ALLOC) || 4258 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz); 4259 return CheckOffset && CheckVA; 4260 } 4261 4262 template <class ELFT> 4263 void GNUStyle<ELFT>::printProgramHeaders( 4264 const ELFO *Obj, bool PrintProgramHeaders, 4265 cl::boolOrDefault PrintSectionMapping) { 4266 if (PrintProgramHeaders) 4267 printProgramHeaders(Obj); 4268 4269 // Display the section mapping along with the program headers, unless 4270 // -section-mapping is explicitly set to false. 4271 if (PrintSectionMapping != cl::BOU_FALSE) 4272 printSectionMapping(Obj); 4273 } 4274 4275 template <class ELFT> 4276 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 4277 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 4278 const Elf_Ehdr *Header = Obj->getHeader(); 4279 Field Fields[8] = {2, 17, 26, 37 + Bias, 4280 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 4281 OS << "\nElf file type is " 4282 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 4283 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 4284 << "There are " << Header->e_phnum << " program headers," 4285 << " starting at offset " << Header->e_phoff << "\n\n" 4286 << "Program Headers:\n"; 4287 if (ELFT::Is64Bits) 4288 OS << " Type Offset VirtAddr PhysAddr " 4289 << " FileSiz MemSiz Flg Align\n"; 4290 else 4291 OS << " Type Offset VirtAddr PhysAddr FileSiz " 4292 << "MemSiz Flg Align\n"; 4293 4294 unsigned Width = ELFT::Is64Bits ? 18 : 10; 4295 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 4296 for (const auto &Phdr : 4297 unwrapOrError(this->FileName, Obj->program_headers())) { 4298 Fields[0].Str = getElfPtType(Header->e_machine, Phdr.p_type); 4299 Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8)); 4300 Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width)); 4301 Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width)); 4302 Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 4303 Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 4304 Fields[6].Str = printPhdrFlags(Phdr.p_flags); 4305 Fields[7].Str = to_string(format_hex(Phdr.p_align, 1)); 4306 for (auto Field : Fields) 4307 printField(Field); 4308 if (Phdr.p_type == ELF::PT_INTERP) { 4309 OS << "\n"; 4310 auto ReportBadInterp = [&](const Twine &Msg) { 4311 reportWarning( 4312 createError("unable to read program interpreter name at offset 0x" + 4313 Twine::utohexstr(Phdr.p_offset) + ": " + Msg), 4314 this->FileName); 4315 }; 4316 4317 if (Phdr.p_offset >= Obj->getBufSize()) { 4318 ReportBadInterp("it goes past the end of the file (0x" + 4319 Twine::utohexstr(Obj->getBufSize()) + ")"); 4320 continue; 4321 } 4322 4323 const char *Data = 4324 reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset; 4325 size_t MaxSize = Obj->getBufSize() - Phdr.p_offset; 4326 size_t Len = strnlen(Data, MaxSize); 4327 if (Len == MaxSize) { 4328 ReportBadInterp("it is not null-terminated"); 4329 continue; 4330 } 4331 4332 OS << " [Requesting program interpreter: "; 4333 OS << StringRef(Data, Len) << "]"; 4334 } 4335 OS << "\n"; 4336 } 4337 } 4338 4339 template <class ELFT> 4340 void GNUStyle<ELFT>::printSectionMapping(const ELFO *Obj) { 4341 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 4342 DenseSet<const Elf_Shdr *> BelongsToSegment; 4343 int Phnum = 0; 4344 for (const Elf_Phdr &Phdr : 4345 unwrapOrError(this->FileName, Obj->program_headers())) { 4346 std::string Sections; 4347 OS << format(" %2.2d ", Phnum++); 4348 // Check if each section is in a segment and then print mapping. 4349 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 4350 if (Sec.sh_type == ELF::SHT_NULL) 4351 continue; 4352 4353 // readelf additionally makes sure it does not print zero sized sections 4354 // at end of segments and for PT_DYNAMIC both start and end of section 4355 // .tbss must only be shown in PT_TLS section. 4356 if (checkTLSSections<ELFT>(Phdr, Sec) && checkOffsets<ELFT>(Phdr, Sec) && 4357 checkVMA<ELFT>(Phdr, Sec) && checkPTDynamic<ELFT>(Phdr, Sec)) { 4358 Sections += 4359 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + 4360 " "; 4361 BelongsToSegment.insert(&Sec); 4362 } 4363 } 4364 OS << Sections << "\n"; 4365 OS.flush(); 4366 } 4367 4368 // Display sections that do not belong to a segment. 4369 std::string Sections; 4370 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 4371 if (BelongsToSegment.find(&Sec) == BelongsToSegment.end()) 4372 Sections += 4373 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + ' '; 4374 } 4375 if (!Sections.empty()) { 4376 OS << " None " << Sections << '\n'; 4377 OS.flush(); 4378 } 4379 } 4380 4381 namespace { 4382 template <class ELFT> struct RelSymbol { 4383 const typename ELFT::Sym *Sym; 4384 std::string Name; 4385 }; 4386 4387 template <class ELFT> 4388 RelSymbol<ELFT> getSymbolForReloc(const ELFFile<ELFT> *Obj, StringRef FileName, 4389 const ELFDumper<ELFT> *Dumper, 4390 const typename ELFT::Rela &Reloc) { 4391 uint32_t SymIndex = Reloc.getSymbol(Obj->isMips64EL()); 4392 auto WarnAndReturn = [&](const typename ELFT::Sym *Sym, 4393 const Twine &Reason) -> RelSymbol<ELFT> { 4394 reportWarning( 4395 createError("unable to get name of the dynamic symbol with index " + 4396 Twine(SymIndex) + ": " + Reason), 4397 FileName); 4398 return {Sym, "<corrupt>"}; 4399 }; 4400 4401 ArrayRef<typename ELFT::Sym> Symbols = Dumper->dynamic_symbols(); 4402 const typename ELFT::Sym *FirstSym = Symbols.begin(); 4403 if (!FirstSym) 4404 return WarnAndReturn(nullptr, "no dynamic symbol table found"); 4405 4406 // We might have an object without a section header. In this case the size of 4407 // Symbols is zero, because there is no way to know the size of the dynamic 4408 // table. We should allow this case and not print a warning. 4409 if (!Symbols.empty() && SymIndex >= Symbols.size()) 4410 return WarnAndReturn( 4411 nullptr, 4412 "index is greater than or equal to the number of dynamic symbols (" + 4413 Twine(Symbols.size()) + ")"); 4414 4415 const typename ELFT::Sym *Sym = FirstSym + SymIndex; 4416 Expected<StringRef> ErrOrName = Sym->getName(Dumper->getDynamicStringTable()); 4417 if (!ErrOrName) 4418 return WarnAndReturn(Sym, toString(ErrOrName.takeError())); 4419 4420 return {Sym == FirstSym ? nullptr : Sym, maybeDemangle(*ErrOrName)}; 4421 } 4422 } // namespace 4423 4424 template <class ELFT> 4425 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 4426 bool IsRela) { 4427 RelSymbol<ELFT> S = getSymbolForReloc(Obj, this->FileName, this->dumper(), R); 4428 printRelocation(Obj, S.Sym, S.Name, R, IsRela); 4429 } 4430 4431 template <class ELFT> 4432 static size_t getMaxDynamicTagSize(const ELFFile<ELFT> *Obj, 4433 typename ELFT::DynRange Tags) { 4434 size_t Max = 0; 4435 for (const typename ELFT::Dyn &Dyn : Tags) 4436 Max = std::max(Max, Obj->getDynamicTagAsString(Dyn.d_tag).size()); 4437 return Max; 4438 } 4439 4440 template <class ELFT> void GNUStyle<ELFT>::printDynamic(const ELFO *Obj) { 4441 Elf_Dyn_Range Table = this->dumper()->dynamic_table(); 4442 if (Table.empty()) 4443 return; 4444 4445 const DynRegionInfo &DynamicTableRegion = 4446 this->dumper()->getDynamicTableRegion(); 4447 4448 OS << "Dynamic section at offset " 4449 << format_hex(reinterpret_cast<const uint8_t *>(DynamicTableRegion.Addr) - 4450 Obj->base(), 4451 1) 4452 << " contains " << Table.size() << " entries:\n"; 4453 4454 // The type name is surrounded with round brackets, hence add 2. 4455 size_t MaxTagSize = getMaxDynamicTagSize(Obj, Table) + 2; 4456 // The "Name/Value" column should be indented from the "Type" column by N 4457 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 4458 // space (1) = 3. 4459 OS << " Tag" + std::string(ELFT::Is64Bits ? 16 : 8, ' ') + "Type" 4460 << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 4461 4462 std::string ValueFmt = " %-" + std::to_string(MaxTagSize) + "s "; 4463 for (auto Entry : Table) { 4464 uintX_t Tag = Entry.getTag(); 4465 std::string Type = 4466 std::string("(") + Obj->getDynamicTagAsString(Tag).c_str() + ")"; 4467 std::string Value = this->dumper()->getDynamicEntry(Tag, Entry.getVal()); 4468 OS << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10) 4469 << format(ValueFmt.c_str(), Type.c_str()) << Value << "\n"; 4470 } 4471 } 4472 4473 template <class ELFT> 4474 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 4475 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 4476 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 4477 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 4478 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 4479 if (DynRelaRegion.Size > 0) { 4480 OS << "\n'RELA' relocation section at offset " 4481 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 4482 Obj->base(), 4483 1) 4484 << " contains " << DynRelaRegion.Size << " bytes:\n"; 4485 printRelocHeader(ELF::SHT_RELA); 4486 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 4487 printDynamicRelocation(Obj, Rela, true); 4488 } 4489 if (DynRelRegion.Size > 0) { 4490 OS << "\n'REL' relocation section at offset " 4491 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 4492 Obj->base(), 4493 1) 4494 << " contains " << DynRelRegion.Size << " bytes:\n"; 4495 printRelocHeader(ELF::SHT_REL); 4496 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 4497 Elf_Rela Rela; 4498 Rela.r_offset = Rel.r_offset; 4499 Rela.r_info = Rel.r_info; 4500 Rela.r_addend = 0; 4501 printDynamicRelocation(Obj, Rela, false); 4502 } 4503 } 4504 if (DynRelrRegion.Size > 0) { 4505 OS << "\n'RELR' relocation section at offset " 4506 << format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) - 4507 Obj->base(), 4508 1) 4509 << " contains " << DynRelrRegion.Size << " bytes:\n"; 4510 printRelocHeader(ELF::SHT_REL); 4511 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 4512 std::vector<Elf_Rela> RelrRelas = 4513 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 4514 for (const Elf_Rela &Rela : RelrRelas) { 4515 printDynamicRelocation(Obj, Rela, false); 4516 } 4517 } 4518 if (DynPLTRelRegion.Size) { 4519 OS << "\n'PLT' relocation section at offset " 4520 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 4521 Obj->base(), 4522 1) 4523 << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 4524 } 4525 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 4526 printRelocHeader(ELF::SHT_RELA); 4527 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 4528 printDynamicRelocation(Obj, Rela, true); 4529 } else { 4530 printRelocHeader(ELF::SHT_REL); 4531 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 4532 Elf_Rela Rela; 4533 Rela.r_offset = Rel.r_offset; 4534 Rela.r_info = Rel.r_info; 4535 Rela.r_addend = 0; 4536 printDynamicRelocation(Obj, Rela, false); 4537 } 4538 } 4539 } 4540 4541 template <class ELFT> 4542 void GNUStyle<ELFT>::printGNUVersionSectionProlog( 4543 const ELFFile<ELFT> *Obj, const typename ELFT::Shdr *Sec, 4544 const Twine &Label, unsigned EntriesNum) { 4545 StringRef SecName = unwrapOrError(this->FileName, Obj->getSectionName(Sec)); 4546 OS << Label << " section '" << SecName << "' " 4547 << "contains " << EntriesNum << " entries:\n"; 4548 4549 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 4550 StringRef SymTabName = "<corrupt>"; 4551 4552 Expected<const typename ELFT::Shdr *> SymTabOrErr = 4553 Obj->getSection(Sec->sh_link); 4554 if (SymTabOrErr) 4555 SymTabName = 4556 unwrapOrError(this->FileName, Obj->getSectionName(*SymTabOrErr)); 4557 else 4558 this->reportUniqueWarning( 4559 createError("invalid section linked to " + 4560 object::getELFSectionTypeName(Obj->getHeader()->e_machine, 4561 Sec->sh_type) + 4562 " section with index " + Twine(SecNdx) + ": " + 4563 toString(SymTabOrErr.takeError()))); 4564 4565 OS << " Addr: " << format_hex_no_prefix(Sec->sh_addr, 16) 4566 << " Offset: " << format_hex(Sec->sh_offset, 8) 4567 << " Link: " << Sec->sh_link << " (" << SymTabName << ")\n"; 4568 } 4569 4570 template <class ELFT> 4571 void GNUStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj, 4572 const Elf_Shdr *Sec) { 4573 if (!Sec) 4574 return; 4575 4576 printGNUVersionSectionProlog(Obj, Sec, "Version symbols", 4577 Sec->sh_size / sizeof(Elf_Versym)); 4578 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 4579 this->dumper()->getVersionTable(Sec, /*SymTab=*/nullptr, 4580 /*StrTab=*/nullptr); 4581 if (!VerTableOrErr) { 4582 this->reportUniqueWarning(VerTableOrErr.takeError()); 4583 return; 4584 } 4585 4586 ArrayRef<Elf_Versym> VerTable = *VerTableOrErr; 4587 std::vector<StringRef> Versions; 4588 for (size_t I = 0, E = VerTable.size(); I < E; ++I) { 4589 unsigned Ndx = VerTable[I].vs_index; 4590 if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) { 4591 Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*"); 4592 continue; 4593 } 4594 4595 bool IsDefault; 4596 Expected<StringRef> NameOrErr = 4597 this->dumper()->getSymbolVersionByIndex(Ndx, IsDefault); 4598 if (!NameOrErr) { 4599 if (!NameOrErr) { 4600 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 4601 this->reportUniqueWarning(createError( 4602 "unable to get a version for entry " + Twine(I) + 4603 " of SHT_GNU_versym section with index " + Twine(SecNdx) + ": " + 4604 toString(NameOrErr.takeError()))); 4605 } 4606 Versions.emplace_back("<corrupt>"); 4607 continue; 4608 } 4609 Versions.emplace_back(*NameOrErr); 4610 } 4611 4612 // readelf prints 4 entries per line. 4613 uint64_t Entries = VerTable.size(); 4614 for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) { 4615 OS << " " << format_hex_no_prefix(VersymRow, 3) << ":"; 4616 for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) { 4617 unsigned Ndx = VerTable[VersymRow + I].vs_index; 4618 OS << format("%4x%c", Ndx & VERSYM_VERSION, 4619 Ndx & VERSYM_HIDDEN ? 'h' : ' '); 4620 OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13); 4621 } 4622 OS << '\n'; 4623 } 4624 OS << '\n'; 4625 } 4626 4627 static std::string versionFlagToString(unsigned Flags) { 4628 if (Flags == 0) 4629 return "none"; 4630 4631 std::string Ret; 4632 auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) { 4633 if (!(Flags & Flag)) 4634 return; 4635 if (!Ret.empty()) 4636 Ret += " | "; 4637 Ret += Name; 4638 Flags &= ~Flag; 4639 }; 4640 4641 AddFlag(VER_FLG_BASE, "BASE"); 4642 AddFlag(VER_FLG_WEAK, "WEAK"); 4643 AddFlag(VER_FLG_INFO, "INFO"); 4644 AddFlag(~0, "<unknown>"); 4645 return Ret; 4646 } 4647 4648 template <class ELFT> 4649 void GNUStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 4650 const Elf_Shdr *Sec) { 4651 if (!Sec) 4652 return; 4653 4654 printGNUVersionSectionProlog(Obj, Sec, "Version definition", Sec->sh_info); 4655 4656 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec); 4657 if (!V) { 4658 this->reportUniqueWarning(V.takeError()); 4659 return; 4660 } 4661 4662 for (const VerDef &Def : *V) { 4663 OS << format(" 0x%04x: Rev: %u Flags: %s Index: %u Cnt: %u Name: %s\n", 4664 Def.Offset, Def.Version, 4665 versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt, 4666 Def.Name.data()); 4667 unsigned I = 0; 4668 for (const VerdAux &Aux : Def.AuxV) 4669 OS << format(" 0x%04x: Parent %u: %s\n", Aux.Offset, ++I, 4670 Aux.Name.data()); 4671 } 4672 4673 OS << '\n'; 4674 } 4675 4676 template <class ELFT> 4677 void GNUStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj, 4678 const Elf_Shdr *Sec) { 4679 if (!Sec) 4680 return; 4681 4682 unsigned VerneedNum = Sec->sh_info; 4683 printGNUVersionSectionProlog(Obj, Sec, "Version needs", VerneedNum); 4684 4685 Expected<std::vector<VerNeed>> V = 4686 this->dumper()->getVersionDependencies(Sec); 4687 if (!V) { 4688 this->reportUniqueWarning(V.takeError()); 4689 return; 4690 } 4691 4692 for (const VerNeed &VN : *V) { 4693 OS << format(" 0x%04x: Version: %u File: %s Cnt: %u\n", VN.Offset, 4694 VN.Version, VN.File.data(), VN.Cnt); 4695 for (const VernAux &Aux : VN.AuxV) 4696 OS << format(" 0x%04x: Name: %s Flags: %s Version: %u\n", Aux.Offset, 4697 Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(), 4698 Aux.Other); 4699 } 4700 OS << '\n'; 4701 } 4702 4703 template <class ELFT> 4704 void GNUStyle<ELFT>::printHashHistogram(const Elf_Hash &HashTable) { 4705 size_t NBucket = HashTable.nbucket; 4706 size_t NChain = HashTable.nchain; 4707 ArrayRef<Elf_Word> Buckets = HashTable.buckets(); 4708 ArrayRef<Elf_Word> Chains = HashTable.chains(); 4709 size_t TotalSyms = 0; 4710 // If hash table is correct, we have at least chains with 0 length 4711 size_t MaxChain = 1; 4712 size_t CumulativeNonZero = 0; 4713 4714 if (NChain == 0 || NBucket == 0) 4715 return; 4716 4717 std::vector<size_t> ChainLen(NBucket, 0); 4718 // Go over all buckets and and note chain lengths of each bucket (total 4719 // unique chain lengths). 4720 for (size_t B = 0; B < NBucket; B++) { 4721 std::vector<bool> Visited(NChain); 4722 for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) { 4723 if (C == ELF::STN_UNDEF) 4724 break; 4725 if (Visited[C]) { 4726 reportWarning(createError(".hash section is invalid: bucket " + 4727 Twine(C) + 4728 ": a cycle was detected in the linked chain"), 4729 this->FileName); 4730 break; 4731 } 4732 Visited[C] = true; 4733 if (MaxChain <= ++ChainLen[B]) 4734 MaxChain++; 4735 } 4736 TotalSyms += ChainLen[B]; 4737 } 4738 4739 if (!TotalSyms) 4740 return; 4741 4742 std::vector<size_t> Count(MaxChain, 0); 4743 // Count how long is the chain for each bucket 4744 for (size_t B = 0; B < NBucket; B++) 4745 ++Count[ChainLen[B]]; 4746 // Print Number of buckets with each chain lengths and their cumulative 4747 // coverage of the symbols 4748 OS << "Histogram for bucket list length (total of " << NBucket 4749 << " buckets)\n" 4750 << " Length Number % of total Coverage\n"; 4751 for (size_t I = 0; I < MaxChain; I++) { 4752 CumulativeNonZero += Count[I] * I; 4753 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4754 (Count[I] * 100.0) / NBucket, 4755 (CumulativeNonZero * 100.0) / TotalSyms); 4756 } 4757 } 4758 4759 template <class ELFT> 4760 void GNUStyle<ELFT>::printGnuHashHistogram(const Elf_GnuHash &GnuHashTable) { 4761 Expected<ArrayRef<Elf_Word>> ChainsOrErr = getGnuHashTableChains<ELFT>( 4762 this->dumper()->getDynSymRegion(), &GnuHashTable); 4763 if (!ChainsOrErr) { 4764 this->reportUniqueWarning( 4765 createError("unable to print the GNU hash table histogram: " + 4766 toString(ChainsOrErr.takeError()))); 4767 return; 4768 } 4769 4770 ArrayRef<Elf_Word> Chains = *ChainsOrErr; 4771 size_t Symndx = GnuHashTable.symndx; 4772 size_t TotalSyms = 0; 4773 size_t MaxChain = 1; 4774 size_t CumulativeNonZero = 0; 4775 4776 size_t NBucket = GnuHashTable.nbuckets; 4777 if (Chains.empty() || NBucket == 0) 4778 return; 4779 4780 ArrayRef<Elf_Word> Buckets = GnuHashTable.buckets(); 4781 std::vector<size_t> ChainLen(NBucket, 0); 4782 for (size_t B = 0; B < NBucket; B++) { 4783 if (!Buckets[B]) 4784 continue; 4785 size_t Len = 1; 4786 for (size_t C = Buckets[B] - Symndx; 4787 C < Chains.size() && (Chains[C] & 1) == 0; C++) 4788 if (MaxChain < ++Len) 4789 MaxChain++; 4790 ChainLen[B] = Len; 4791 TotalSyms += Len; 4792 } 4793 MaxChain++; 4794 4795 if (!TotalSyms) 4796 return; 4797 4798 std::vector<size_t> Count(MaxChain, 0); 4799 for (size_t B = 0; B < NBucket; B++) 4800 ++Count[ChainLen[B]]; 4801 // Print Number of buckets with each chain lengths and their cumulative 4802 // coverage of the symbols 4803 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 4804 << " buckets)\n" 4805 << " Length Number % of total Coverage\n"; 4806 for (size_t I = 0; I < MaxChain; I++) { 4807 CumulativeNonZero += Count[I] * I; 4808 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 4809 (Count[I] * 100.0) / NBucket, 4810 (CumulativeNonZero * 100.0) / TotalSyms); 4811 } 4812 } 4813 4814 // Hash histogram shows statistics of how efficient the hash was for the 4815 // dynamic symbol table. The table shows the number of hash buckets for 4816 // different lengths of chains as an absolute number and percentage of the total 4817 // buckets, and the cumulative coverage of symbols for each set of buckets. 4818 template <class ELFT> 4819 void GNUStyle<ELFT>::printHashHistograms(const ELFFile<ELFT> *Obj) { 4820 // Print histogram for the .hash section. 4821 if (const Elf_Hash *HashTable = this->dumper()->getHashTable()) { 4822 if (Error E = checkHashTable<ELFT>(Obj, HashTable)) 4823 this->reportUniqueWarning(std::move(E)); 4824 else 4825 printHashHistogram(*HashTable); 4826 } 4827 4828 // Print histogram for the .gnu.hash section. 4829 if (const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable()) { 4830 if (Error E = checkGNUHashTable<ELFT>(Obj, GnuHashTable)) 4831 this->reportUniqueWarning(std::move(E)); 4832 else 4833 printGnuHashHistogram(*GnuHashTable); 4834 } 4835 } 4836 4837 template <class ELFT> 4838 void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 4839 OS << "GNUStyle::printCGProfile not implemented\n"; 4840 } 4841 4842 template <class ELFT> 4843 void GNUStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) { 4844 reportError(createError("--addrsig: not implemented"), this->FileName); 4845 } 4846 4847 static StringRef getGenericNoteTypeName(const uint32_t NT) { 4848 static const struct { 4849 uint32_t ID; 4850 const char *Name; 4851 } Notes[] = { 4852 {ELF::NT_VERSION, "NT_VERSION (version)"}, 4853 {ELF::NT_ARCH, "NT_ARCH (architecture)"}, 4854 {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"}, 4855 {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"}, 4856 }; 4857 4858 for (const auto &Note : Notes) 4859 if (Note.ID == NT) 4860 return Note.Name; 4861 4862 return ""; 4863 } 4864 4865 static StringRef getCoreNoteTypeName(const uint32_t NT) { 4866 static const struct { 4867 uint32_t ID; 4868 const char *Name; 4869 } Notes[] = { 4870 {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"}, 4871 {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"}, 4872 {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"}, 4873 {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"}, 4874 {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"}, 4875 {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"}, 4876 {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"}, 4877 {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"}, 4878 {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"}, 4879 {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"}, 4880 {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"}, 4881 4882 {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"}, 4883 {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"}, 4884 {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"}, 4885 {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"}, 4886 {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"}, 4887 {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"}, 4888 {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"}, 4889 {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"}, 4890 {ELF::NT_PPC_TM_CFPR, 4891 "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"}, 4892 {ELF::NT_PPC_TM_CVMX, 4893 "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"}, 4894 {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"}, 4895 {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"}, 4896 {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"}, 4897 {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"}, 4898 {ELF::NT_PPC_TM_CDSCR, 4899 "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"}, 4900 4901 {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"}, 4902 {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"}, 4903 {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"}, 4904 4905 {ELF::NT_S390_HIGH_GPRS, 4906 "NT_S390_HIGH_GPRS (s390 upper register halves)"}, 4907 {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"}, 4908 {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"}, 4909 {ELF::NT_S390_TODPREG, 4910 "NT_S390_TODPREG (s390 TOD programmable register)"}, 4911 {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"}, 4912 {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"}, 4913 {ELF::NT_S390_LAST_BREAK, 4914 "NT_S390_LAST_BREAK (s390 last breaking event address)"}, 4915 {ELF::NT_S390_SYSTEM_CALL, 4916 "NT_S390_SYSTEM_CALL (s390 system call restart data)"}, 4917 {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"}, 4918 {ELF::NT_S390_VXRS_LOW, 4919 "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"}, 4920 {ELF::NT_S390_VXRS_HIGH, 4921 "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"}, 4922 {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"}, 4923 {ELF::NT_S390_GS_BC, 4924 "NT_S390_GS_BC (s390 guarded-storage broadcast control)"}, 4925 4926 {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"}, 4927 {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"}, 4928 {ELF::NT_ARM_HW_BREAK, 4929 "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"}, 4930 {ELF::NT_ARM_HW_WATCH, 4931 "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"}, 4932 4933 {ELF::NT_FILE, "NT_FILE (mapped files)"}, 4934 {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"}, 4935 {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"}, 4936 }; 4937 4938 for (const auto &Note : Notes) 4939 if (Note.ID == NT) 4940 return Note.Name; 4941 4942 return ""; 4943 } 4944 4945 static std::string getGNUNoteTypeName(const uint32_t NT) { 4946 static const struct { 4947 uint32_t ID; 4948 const char *Name; 4949 } Notes[] = { 4950 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 4951 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 4952 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 4953 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 4954 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, 4955 }; 4956 4957 for (const auto &Note : Notes) 4958 if (Note.ID == NT) 4959 return std::string(Note.Name); 4960 4961 std::string string; 4962 raw_string_ostream OS(string); 4963 OS << format("Unknown note type (0x%08x)", NT); 4964 return OS.str(); 4965 } 4966 4967 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 4968 static const struct { 4969 uint32_t ID; 4970 const char *Name; 4971 } Notes[] = { 4972 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 4973 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 4974 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 4975 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 4976 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 4977 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 4978 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 4979 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 4980 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 4981 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 4982 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 4983 }; 4984 4985 for (const auto &Note : Notes) 4986 if (Note.ID == NT) 4987 return std::string(Note.Name); 4988 4989 std::string string; 4990 raw_string_ostream OS(string); 4991 OS << format("Unknown note type (0x%08x)", NT); 4992 return OS.str(); 4993 } 4994 4995 static std::string getAMDNoteTypeName(const uint32_t NT) { 4996 static const struct { 4997 uint32_t ID; 4998 const char *Name; 4999 } Notes[] = {{ELF::NT_AMD_AMDGPU_HSA_METADATA, 5000 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 5001 {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"}, 5002 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 5003 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}}; 5004 5005 for (const auto &Note : Notes) 5006 if (Note.ID == NT) 5007 return std::string(Note.Name); 5008 5009 std::string string; 5010 raw_string_ostream OS(string); 5011 OS << format("Unknown note type (0x%08x)", NT); 5012 return OS.str(); 5013 } 5014 5015 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 5016 if (NT == ELF::NT_AMDGPU_METADATA) 5017 return std::string("NT_AMDGPU_METADATA (AMDGPU Metadata)"); 5018 5019 std::string string; 5020 raw_string_ostream OS(string); 5021 OS << format("Unknown note type (0x%08x)", NT); 5022 return OS.str(); 5023 } 5024 5025 template <typename ELFT> 5026 static std::string getGNUProperty(uint32_t Type, uint32_t DataSize, 5027 ArrayRef<uint8_t> Data) { 5028 std::string str; 5029 raw_string_ostream OS(str); 5030 uint32_t PrData; 5031 auto DumpBit = [&](uint32_t Flag, StringRef Name) { 5032 if (PrData & Flag) { 5033 PrData &= ~Flag; 5034 OS << Name; 5035 if (PrData) 5036 OS << ", "; 5037 } 5038 }; 5039 5040 switch (Type) { 5041 default: 5042 OS << format("<application-specific type 0x%x>", Type); 5043 return OS.str(); 5044 case GNU_PROPERTY_STACK_SIZE: { 5045 OS << "stack size: "; 5046 if (DataSize == sizeof(typename ELFT::uint)) 5047 OS << formatv("{0:x}", 5048 (uint64_t)(*(const typename ELFT::Addr *)Data.data())); 5049 else 5050 OS << format("<corrupt length: 0x%x>", DataSize); 5051 return OS.str(); 5052 } 5053 case GNU_PROPERTY_NO_COPY_ON_PROTECTED: 5054 OS << "no copy on protected"; 5055 if (DataSize) 5056 OS << format(" <corrupt length: 0x%x>", DataSize); 5057 return OS.str(); 5058 case GNU_PROPERTY_AARCH64_FEATURE_1_AND: 5059 case GNU_PROPERTY_X86_FEATURE_1_AND: 5060 OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: " 5061 : "x86 feature: "); 5062 if (DataSize != 4) { 5063 OS << format("<corrupt length: 0x%x>", DataSize); 5064 return OS.str(); 5065 } 5066 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5067 if (PrData == 0) { 5068 OS << "<None>"; 5069 return OS.str(); 5070 } 5071 if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) { 5072 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI"); 5073 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC"); 5074 } else { 5075 DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT"); 5076 DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK"); 5077 } 5078 if (PrData) 5079 OS << format("<unknown flags: 0x%x>", PrData); 5080 return OS.str(); 5081 case GNU_PROPERTY_X86_ISA_1_NEEDED: 5082 case GNU_PROPERTY_X86_ISA_1_USED: 5083 OS << "x86 ISA " 5084 << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: "); 5085 if (DataSize != 4) { 5086 OS << format("<corrupt length: 0x%x>", DataSize); 5087 return OS.str(); 5088 } 5089 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5090 if (PrData == 0) { 5091 OS << "<None>"; 5092 return OS.str(); 5093 } 5094 DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV"); 5095 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE"); 5096 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2"); 5097 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3"); 5098 DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3"); 5099 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1"); 5100 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2"); 5101 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX"); 5102 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2"); 5103 DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA"); 5104 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F"); 5105 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD"); 5106 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER"); 5107 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF"); 5108 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL"); 5109 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ"); 5110 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW"); 5111 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS"); 5112 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW"); 5113 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG"); 5114 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA"); 5115 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI"); 5116 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2"); 5117 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI"); 5118 if (PrData) 5119 OS << format("<unknown flags: 0x%x>", PrData); 5120 return OS.str(); 5121 break; 5122 case GNU_PROPERTY_X86_FEATURE_2_NEEDED: 5123 case GNU_PROPERTY_X86_FEATURE_2_USED: 5124 OS << "x86 feature " 5125 << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: "); 5126 if (DataSize != 4) { 5127 OS << format("<corrupt length: 0x%x>", DataSize); 5128 return OS.str(); 5129 } 5130 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data()); 5131 if (PrData == 0) { 5132 OS << "<None>"; 5133 return OS.str(); 5134 } 5135 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86"); 5136 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87"); 5137 DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX"); 5138 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM"); 5139 DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM"); 5140 DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM"); 5141 DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR"); 5142 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE"); 5143 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT"); 5144 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC"); 5145 if (PrData) 5146 OS << format("<unknown flags: 0x%x>", PrData); 5147 return OS.str(); 5148 } 5149 } 5150 5151 template <typename ELFT> 5152 static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) { 5153 using Elf_Word = typename ELFT::Word; 5154 5155 SmallVector<std::string, 4> Properties; 5156 while (Arr.size() >= 8) { 5157 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); 5158 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); 5159 Arr = Arr.drop_front(8); 5160 5161 // Take padding size into account if present. 5162 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); 5163 std::string str; 5164 raw_string_ostream OS(str); 5165 if (Arr.size() < PaddedSize) { 5166 OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize); 5167 Properties.push_back(OS.str()); 5168 break; 5169 } 5170 Properties.push_back( 5171 getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize))); 5172 Arr = Arr.drop_front(PaddedSize); 5173 } 5174 5175 if (!Arr.empty()) 5176 Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>"); 5177 5178 return Properties; 5179 } 5180 5181 struct GNUAbiTag { 5182 std::string OSName; 5183 std::string ABI; 5184 bool IsValid; 5185 }; 5186 5187 template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) { 5188 typedef typename ELFT::Word Elf_Word; 5189 5190 ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()), 5191 reinterpret_cast<const Elf_Word *>(Desc.end())); 5192 5193 if (Words.size() < 4) 5194 return {"", "", /*IsValid=*/false}; 5195 5196 static const char *OSNames[] = { 5197 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 5198 }; 5199 StringRef OSName = "Unknown"; 5200 if (Words[0] < array_lengthof(OSNames)) 5201 OSName = OSNames[Words[0]]; 5202 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 5203 std::string str; 5204 raw_string_ostream ABI(str); 5205 ABI << Major << "." << Minor << "." << Patch; 5206 return {std::string(OSName), ABI.str(), /*IsValid=*/true}; 5207 } 5208 5209 static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) { 5210 std::string str; 5211 raw_string_ostream OS(str); 5212 for (const auto &B : Desc) 5213 OS << format_hex_no_prefix(B, 2); 5214 return OS.str(); 5215 } 5216 5217 static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) { 5218 return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5219 } 5220 5221 template <typename ELFT> 5222 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 5223 ArrayRef<uint8_t> Desc) { 5224 switch (NoteType) { 5225 default: 5226 return; 5227 case ELF::NT_GNU_ABI_TAG: { 5228 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 5229 if (!AbiTag.IsValid) 5230 OS << " <corrupt GNU_ABI_TAG>"; 5231 else 5232 OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI; 5233 break; 5234 } 5235 case ELF::NT_GNU_BUILD_ID: { 5236 OS << " Build ID: " << getGNUBuildId(Desc); 5237 break; 5238 } 5239 case ELF::NT_GNU_GOLD_VERSION: 5240 OS << " Version: " << getGNUGoldVersion(Desc); 5241 break; 5242 case ELF::NT_GNU_PROPERTY_TYPE_0: 5243 OS << " Properties:"; 5244 for (const auto &Property : getGNUPropertyList<ELFT>(Desc)) 5245 OS << " " << Property << "\n"; 5246 break; 5247 } 5248 OS << '\n'; 5249 } 5250 5251 struct AMDNote { 5252 std::string Type; 5253 std::string Value; 5254 }; 5255 5256 template <typename ELFT> 5257 static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5258 switch (NoteType) { 5259 default: 5260 return {"", ""}; 5261 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 5262 return { 5263 "HSA Metadata", 5264 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; 5265 case ELF::NT_AMD_AMDGPU_ISA: 5266 return { 5267 "ISA Version", 5268 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())}; 5269 } 5270 } 5271 5272 struct AMDGPUNote { 5273 std::string Type; 5274 std::string Value; 5275 }; 5276 5277 template <typename ELFT> 5278 static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) { 5279 switch (NoteType) { 5280 default: 5281 return {"", ""}; 5282 case ELF::NT_AMDGPU_METADATA: { 5283 auto MsgPackString = 5284 StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size()); 5285 msgpack::Document MsgPackDoc; 5286 if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false)) 5287 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"}; 5288 5289 AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true); 5290 if (!Verifier.verify(MsgPackDoc.getRoot())) 5291 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"}; 5292 5293 std::string HSAMetadataString; 5294 raw_string_ostream StrOS(HSAMetadataString); 5295 MsgPackDoc.toYAML(StrOS); 5296 5297 return {"AMDGPU Metadata", StrOS.str()}; 5298 } 5299 } 5300 } 5301 5302 struct CoreFileMapping { 5303 uint64_t Start, End, Offset; 5304 StringRef Filename; 5305 }; 5306 5307 struct CoreNote { 5308 uint64_t PageSize; 5309 std::vector<CoreFileMapping> Mappings; 5310 }; 5311 5312 static Expected<CoreNote> readCoreNote(DataExtractor Desc) { 5313 // Expected format of the NT_FILE note description: 5314 // 1. # of file mappings (call it N) 5315 // 2. Page size 5316 // 3. N (start, end, offset) triples 5317 // 4. N packed filenames (null delimited) 5318 // Each field is an Elf_Addr, except for filenames which are char* strings. 5319 5320 CoreNote Ret; 5321 const int Bytes = Desc.getAddressSize(); 5322 5323 if (!Desc.isValidOffsetForAddress(2)) 5324 return createStringError(object_error::parse_failed, 5325 "malformed note: header too short"); 5326 if (Desc.getData().back() != 0) 5327 return createStringError(object_error::parse_failed, 5328 "malformed note: not NUL terminated"); 5329 5330 uint64_t DescOffset = 0; 5331 uint64_t FileCount = Desc.getAddress(&DescOffset); 5332 Ret.PageSize = Desc.getAddress(&DescOffset); 5333 5334 if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes)) 5335 return createStringError(object_error::parse_failed, 5336 "malformed note: too short for number of files"); 5337 5338 uint64_t FilenamesOffset = 0; 5339 DataExtractor Filenames( 5340 Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes), 5341 Desc.isLittleEndian(), Desc.getAddressSize()); 5342 5343 Ret.Mappings.resize(FileCount); 5344 for (CoreFileMapping &Mapping : Ret.Mappings) { 5345 if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1)) 5346 return createStringError(object_error::parse_failed, 5347 "malformed note: too few filenames"); 5348 Mapping.Start = Desc.getAddress(&DescOffset); 5349 Mapping.End = Desc.getAddress(&DescOffset); 5350 Mapping.Offset = Desc.getAddress(&DescOffset); 5351 Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset); 5352 } 5353 5354 return Ret; 5355 } 5356 5357 template <typename ELFT> 5358 static void printCoreNote(raw_ostream &OS, const CoreNote &Note) { 5359 // Length of "0x<address>" string. 5360 const int FieldWidth = ELFT::Is64Bits ? 18 : 10; 5361 5362 OS << " Page size: " << format_decimal(Note.PageSize, 0) << '\n'; 5363 OS << " " << right_justify("Start", FieldWidth) << " " 5364 << right_justify("End", FieldWidth) << " " 5365 << right_justify("Page Offset", FieldWidth) << '\n'; 5366 for (const CoreFileMapping &Mapping : Note.Mappings) { 5367 OS << " " << format_hex(Mapping.Start, FieldWidth) << " " 5368 << format_hex(Mapping.End, FieldWidth) << " " 5369 << format_hex(Mapping.Offset, FieldWidth) << "\n " 5370 << Mapping.Filename << '\n'; 5371 } 5372 } 5373 5374 template <class ELFT> 5375 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 5376 auto PrintHeader = [&](Optional<StringRef> SecName, 5377 const typename ELFT::Off Offset, 5378 const typename ELFT::Addr Size) { 5379 OS << "Displaying notes found "; 5380 5381 if (SecName) 5382 OS << "in: " << *SecName << "\n"; 5383 else 5384 OS << "at file offset " << format_hex(Offset, 10) << " with length " 5385 << format_hex(Size, 10) << ":\n"; 5386 5387 OS << " Owner Data size \tDescription\n"; 5388 }; 5389 5390 auto ProcessNote = [&](const Elf_Note &Note) { 5391 StringRef Name = Note.getName(); 5392 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 5393 Elf_Word Type = Note.getType(); 5394 5395 // Print the note owner/type. 5396 OS << " " << left_justify(Name, 20) << ' ' 5397 << format_hex(Descriptor.size(), 10) << '\t'; 5398 if (Name == "GNU") { 5399 OS << getGNUNoteTypeName(Type) << '\n'; 5400 } else if (Name == "FreeBSD") { 5401 OS << getFreeBSDNoteTypeName(Type) << '\n'; 5402 } else if (Name == "AMD") { 5403 OS << getAMDNoteTypeName(Type) << '\n'; 5404 } else if (Name == "AMDGPU") { 5405 OS << getAMDGPUNoteTypeName(Type) << '\n'; 5406 } else { 5407 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE 5408 ? getCoreNoteTypeName(Type) 5409 : getGenericNoteTypeName(Type); 5410 if (!NoteType.empty()) 5411 OS << NoteType << '\n'; 5412 else 5413 OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n"; 5414 } 5415 5416 // Print the description, or fallback to printing raw bytes for unknown 5417 // owners. 5418 if (Name == "GNU") { 5419 printGNUNote<ELFT>(OS, Type, Descriptor); 5420 } else if (Name == "AMD") { 5421 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 5422 if (!N.Type.empty()) 5423 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5424 } else if (Name == "AMDGPU") { 5425 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 5426 if (!N.Type.empty()) 5427 OS << " " << N.Type << ":\n " << N.Value << '\n'; 5428 } else if (Name == "CORE") { 5429 if (Type == ELF::NT_FILE) { 5430 DataExtractor DescExtractor(Descriptor, 5431 ELFT::TargetEndianness == support::little, 5432 sizeof(Elf_Addr)); 5433 Expected<CoreNote> Note = readCoreNote(DescExtractor); 5434 if (Note) 5435 printCoreNote<ELFT>(OS, *Note); 5436 else 5437 reportWarning(Note.takeError(), this->FileName); 5438 } 5439 } else if (!Descriptor.empty()) { 5440 OS << " description data:"; 5441 for (uint8_t B : Descriptor) 5442 OS << " " << format("%02x", B); 5443 OS << '\n'; 5444 } 5445 }; 5446 5447 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 5448 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) { 5449 for (const auto &S : Sections) { 5450 if (S.sh_type != SHT_NOTE) 5451 continue; 5452 PrintHeader(expectedToOptional(Obj->getSectionName(&S)), S.sh_offset, 5453 S.sh_size); 5454 Error Err = Error::success(); 5455 for (auto Note : Obj->notes(S, Err)) 5456 ProcessNote(Note); 5457 if (Err) 5458 reportError(std::move(Err), this->FileName); 5459 } 5460 } else { 5461 for (const auto &P : 5462 unwrapOrError(this->FileName, Obj->program_headers())) { 5463 if (P.p_type != PT_NOTE) 5464 continue; 5465 PrintHeader(/*SecName=*/None, P.p_offset, P.p_filesz); 5466 Error Err = Error::success(); 5467 for (auto Note : Obj->notes(P, Err)) 5468 ProcessNote(Note); 5469 if (Err) 5470 reportError(std::move(Err), this->FileName); 5471 } 5472 } 5473 } 5474 5475 template <class ELFT> 5476 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 5477 OS << "printELFLinkerOptions not implemented!\n"; 5478 } 5479 5480 template <class ELFT> 5481 void DumpStyle<ELFT>::printDependentLibsHelper( 5482 const ELFFile<ELFT> *Obj, 5483 function_ref<void(const Elf_Shdr &)> OnSectionStart, 5484 function_ref<void(StringRef, uint64_t)> OnLibEntry) { 5485 auto Warn = [this](unsigned SecNdx, StringRef Msg) { 5486 this->reportUniqueWarning( 5487 createError("SHT_LLVM_DEPENDENT_LIBRARIES section at index " + 5488 Twine(SecNdx) + " is broken: " + Msg)); 5489 }; 5490 5491 unsigned I = -1; 5492 for (const Elf_Shdr &Shdr : cantFail(Obj->sections())) { 5493 ++I; 5494 if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES) 5495 continue; 5496 5497 OnSectionStart(Shdr); 5498 5499 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(&Shdr); 5500 if (!ContentsOrErr) { 5501 Warn(I, toString(ContentsOrErr.takeError())); 5502 continue; 5503 } 5504 5505 ArrayRef<uint8_t> Contents = *ContentsOrErr; 5506 if (!Contents.empty() && Contents.back() != 0) { 5507 Warn(I, "the content is not null-terminated"); 5508 continue; 5509 } 5510 5511 for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) { 5512 StringRef Lib((const char *)I); 5513 OnLibEntry(Lib, I - Contents.begin()); 5514 I += Lib.size() + 1; 5515 } 5516 } 5517 } 5518 5519 template <class ELFT> 5520 void GNUStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) { 5521 bool SectionStarted = false; 5522 struct NameOffset { 5523 StringRef Name; 5524 uint64_t Offset; 5525 }; 5526 std::vector<NameOffset> SecEntries; 5527 NameOffset Current; 5528 auto PrintSection = [&]() { 5529 OS << "Dependent libraries section " << Current.Name << " at offset " 5530 << format_hex(Current.Offset, 1) << " contains " << SecEntries.size() 5531 << " entries:\n"; 5532 for (NameOffset Entry : SecEntries) 5533 OS << " [" << format("%6tx", Entry.Offset) << "] " << Entry.Name 5534 << "\n"; 5535 OS << "\n"; 5536 SecEntries.clear(); 5537 }; 5538 5539 auto OnSectionStart = [&](const Elf_Shdr &Shdr) { 5540 if (SectionStarted) 5541 PrintSection(); 5542 SectionStarted = true; 5543 Current.Offset = Shdr.sh_offset; 5544 Expected<StringRef> Name = Obj->getSectionName(&Shdr); 5545 if (!Name) { 5546 Current.Name = "<?>"; 5547 this->reportUniqueWarning( 5548 createError("cannot get section name of " 5549 "SHT_LLVM_DEPENDENT_LIBRARIES section: " + 5550 toString(Name.takeError()))); 5551 } else { 5552 Current.Name = *Name; 5553 } 5554 }; 5555 auto OnLibEntry = [&](StringRef Lib, uint64_t Offset) { 5556 SecEntries.push_back(NameOffset{Lib, Offset}); 5557 }; 5558 5559 this->printDependentLibsHelper(Obj, OnSectionStart, OnLibEntry); 5560 if (SectionStarted) 5561 PrintSection(); 5562 } 5563 5564 // Used for printing section names in places where possible errors can be 5565 // ignored. 5566 static StringRef getSectionName(const SectionRef &Sec) { 5567 Expected<StringRef> NameOrErr = Sec.getName(); 5568 if (NameOrErr) 5569 return *NameOrErr; 5570 consumeError(NameOrErr.takeError()); 5571 return "<?>"; 5572 } 5573 5574 // Used for printing symbol names in places where possible errors can be 5575 // ignored. 5576 static std::string getSymbolName(const ELFSymbolRef &Sym) { 5577 Expected<StringRef> NameOrErr = Sym.getName(); 5578 if (NameOrErr) 5579 return maybeDemangle(*NameOrErr); 5580 consumeError(NameOrErr.takeError()); 5581 return "<?>"; 5582 } 5583 5584 template <class ELFT> 5585 void DumpStyle<ELFT>::printFunctionStackSize(const ELFObjectFile<ELFT> *Obj, 5586 uint64_t SymValue, 5587 Optional<SectionRef> FunctionSec, 5588 const StringRef SectionName, 5589 DataExtractor Data, 5590 uint64_t *Offset) { 5591 // This function ignores potentially erroneous input, unless it is directly 5592 // related to stack size reporting. 5593 SymbolRef FuncSym; 5594 for (const ELFSymbolRef &Symbol : Obj->symbols()) { 5595 Expected<uint64_t> SymAddrOrErr = Symbol.getAddress(); 5596 if (!SymAddrOrErr) { 5597 consumeError(SymAddrOrErr.takeError()); 5598 continue; 5599 } 5600 if (Expected<uint32_t> SymFlags = Symbol.getFlags()) { 5601 if (*SymFlags & SymbolRef::SF_Undefined) 5602 continue; 5603 } else 5604 consumeError(SymFlags.takeError()); 5605 if (Symbol.getELFType() == ELF::STT_FUNC && *SymAddrOrErr == SymValue) { 5606 // Check if the symbol is in the right section. FunctionSec == None means 5607 // "any section". 5608 if (!FunctionSec || FunctionSec->containsSymbol(Symbol)) { 5609 FuncSym = Symbol; 5610 break; 5611 } 5612 } 5613 } 5614 5615 std::string FuncName = "?"; 5616 // A valid SymbolRef has a non-null object file pointer. 5617 if (FuncSym.BasicSymbolRef::getObject()) 5618 FuncName = getSymbolName(FuncSym); 5619 else 5620 reportWarning( 5621 createError("could not identify function symbol for stack size entry"), 5622 Obj->getFileName()); 5623 5624 // Extract the size. The expectation is that Offset is pointing to the right 5625 // place, i.e. past the function address. 5626 uint64_t PrevOffset = *Offset; 5627 uint64_t StackSize = Data.getULEB128(Offset); 5628 // getULEB128() does not advance Offset if it is not able to extract a valid 5629 // integer. 5630 if (*Offset == PrevOffset) 5631 reportError( 5632 createStringError(object_error::parse_failed, 5633 "could not extract a valid stack size in section %s", 5634 SectionName.data()), 5635 Obj->getFileName()); 5636 5637 printStackSizeEntry(StackSize, FuncName); 5638 } 5639 5640 template <class ELFT> 5641 void GNUStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { 5642 OS.PadToColumn(2); 5643 OS << format_decimal(Size, 11); 5644 OS.PadToColumn(18); 5645 OS << FuncName << "\n"; 5646 } 5647 5648 template <class ELFT> 5649 void DumpStyle<ELFT>::printStackSize(const ELFObjectFile<ELFT> *Obj, 5650 RelocationRef Reloc, 5651 SectionRef FunctionSec, 5652 const StringRef &StackSizeSectionName, 5653 const RelocationResolver &Resolver, 5654 DataExtractor Data) { 5655 // This function ignores potentially erroneous input, unless it is directly 5656 // related to stack size reporting. 5657 object::symbol_iterator RelocSym = Reloc.getSymbol(); 5658 uint64_t RelocSymValue = 0; 5659 StringRef FileStr = Obj->getFileName(); 5660 if (RelocSym != Obj->symbol_end()) { 5661 // Ensure that the relocation symbol is in the function section, i.e. the 5662 // section where the functions whose stack sizes we are reporting are 5663 // located. 5664 auto SectionOrErr = RelocSym->getSection(); 5665 if (!SectionOrErr) { 5666 reportWarning( 5667 createError("cannot identify the section for relocation symbol '" + 5668 getSymbolName(*RelocSym) + "'"), 5669 FileStr); 5670 consumeError(SectionOrErr.takeError()); 5671 } else if (*SectionOrErr != FunctionSec) { 5672 reportWarning(createError("relocation symbol '" + 5673 getSymbolName(*RelocSym) + 5674 "' is not in the expected section"), 5675 FileStr); 5676 // Pretend that the symbol is in the correct section and report its 5677 // stack size anyway. 5678 FunctionSec = **SectionOrErr; 5679 } 5680 5681 Expected<uint64_t> RelocSymValueOrErr = RelocSym->getValue(); 5682 if (RelocSymValueOrErr) 5683 RelocSymValue = *RelocSymValueOrErr; 5684 else 5685 consumeError(RelocSymValueOrErr.takeError()); 5686 } 5687 5688 uint64_t Offset = Reloc.getOffset(); 5689 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) 5690 reportError( 5691 createStringError(object_error::parse_failed, 5692 "found invalid relocation offset into section %s " 5693 "while trying to extract a stack size entry", 5694 StackSizeSectionName.data()), 5695 FileStr); 5696 5697 uint64_t Addend = Data.getAddress(&Offset); 5698 uint64_t SymValue = Resolver(Reloc, RelocSymValue, Addend); 5699 this->printFunctionStackSize(Obj, SymValue, FunctionSec, StackSizeSectionName, 5700 Data, &Offset); 5701 } 5702 5703 template <class ELFT> 5704 void DumpStyle<ELFT>::printNonRelocatableStackSizes( 5705 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) { 5706 // This function ignores potentially erroneous input, unless it is directly 5707 // related to stack size reporting. 5708 const ELFFile<ELFT> *EF = Obj->getELFFile(); 5709 StringRef FileStr = Obj->getFileName(); 5710 for (const SectionRef &Sec : Obj->sections()) { 5711 StringRef SectionName = getSectionName(Sec); 5712 if (SectionName != ".stack_sizes") 5713 continue; 5714 PrintHeader(); 5715 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl()); 5716 ArrayRef<uint8_t> Contents = 5717 unwrapOrError(this->FileName, EF->getSectionContents(ElfSec)); 5718 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr)); 5719 uint64_t Offset = 0; 5720 while (Offset < Contents.size()) { 5721 // The function address is followed by a ULEB representing the stack 5722 // size. Check for an extra byte before we try to process the entry. 5723 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) { 5724 reportError( 5725 createStringError( 5726 object_error::parse_failed, 5727 "section %s ended while trying to extract a stack size entry", 5728 SectionName.data()), 5729 FileStr); 5730 } 5731 uint64_t SymValue = Data.getAddress(&Offset); 5732 printFunctionStackSize(Obj, SymValue, /*FunctionSec=*/None, SectionName, 5733 Data, &Offset); 5734 } 5735 } 5736 } 5737 5738 template <class ELFT> 5739 void DumpStyle<ELFT>::printRelocatableStackSizes( 5740 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) { 5741 const ELFFile<ELFT> *EF = Obj->getELFFile(); 5742 5743 // Build a map between stack size sections and their corresponding relocation 5744 // sections. 5745 llvm::MapVector<SectionRef, SectionRef> StackSizeRelocMap; 5746 const SectionRef NullSection{}; 5747 5748 for (const SectionRef &Sec : Obj->sections()) { 5749 StringRef SectionName; 5750 if (Expected<StringRef> NameOrErr = Sec.getName()) 5751 SectionName = *NameOrErr; 5752 else 5753 consumeError(NameOrErr.takeError()); 5754 5755 // A stack size section that we haven't encountered yet is mapped to the 5756 // null section until we find its corresponding relocation section. 5757 if (SectionName == ".stack_sizes") 5758 if (StackSizeRelocMap.count(Sec) == 0) { 5759 StackSizeRelocMap[Sec] = NullSection; 5760 continue; 5761 } 5762 5763 // Check relocation sections if they are relocating contents of a 5764 // stack sizes section. 5765 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl()); 5766 uint32_t SectionType = ElfSec->sh_type; 5767 if (SectionType != ELF::SHT_RELA && SectionType != ELF::SHT_REL) 5768 continue; 5769 5770 Expected<section_iterator> RelSecOrErr = Sec.getRelocatedSection(); 5771 if (!RelSecOrErr) 5772 reportError(createStringError(object_error::parse_failed, 5773 "%s: failed to get a relocated section: %s", 5774 SectionName.data(), 5775 toString(RelSecOrErr.takeError()).c_str()), 5776 Obj->getFileName()); 5777 5778 const Elf_Shdr *ContentsSec = 5779 Obj->getSection((*RelSecOrErr)->getRawDataRefImpl()); 5780 Expected<StringRef> ContentsSectionNameOrErr = 5781 EF->getSectionName(ContentsSec); 5782 if (!ContentsSectionNameOrErr) { 5783 consumeError(ContentsSectionNameOrErr.takeError()); 5784 continue; 5785 } 5786 if (*ContentsSectionNameOrErr != ".stack_sizes") 5787 continue; 5788 // Insert a mapping from the stack sizes section to its relocation section. 5789 StackSizeRelocMap[Obj->toSectionRef(ContentsSec)] = Sec; 5790 } 5791 5792 for (const auto &StackSizeMapEntry : StackSizeRelocMap) { 5793 PrintHeader(); 5794 const SectionRef &StackSizesSec = StackSizeMapEntry.first; 5795 const SectionRef &RelocSec = StackSizeMapEntry.second; 5796 5797 // Warn about stack size sections without a relocation section. 5798 StringRef StackSizeSectionName = getSectionName(StackSizesSec); 5799 if (RelocSec == NullSection) { 5800 reportWarning(createError("section " + StackSizeSectionName + 5801 " does not have a corresponding " 5802 "relocation section"), 5803 Obj->getFileName()); 5804 continue; 5805 } 5806 5807 // A .stack_sizes section header's sh_link field is supposed to point 5808 // to the section that contains the functions whose stack sizes are 5809 // described in it. 5810 const Elf_Shdr *StackSizesELFSec = 5811 Obj->getSection(StackSizesSec.getRawDataRefImpl()); 5812 const SectionRef FunctionSec = Obj->toSectionRef(unwrapOrError( 5813 this->FileName, EF->getSection(StackSizesELFSec->sh_link))); 5814 5815 bool (*IsSupportedFn)(uint64_t); 5816 RelocationResolver Resolver; 5817 std::tie(IsSupportedFn, Resolver) = getRelocationResolver(*Obj); 5818 auto Contents = unwrapOrError(this->FileName, StackSizesSec.getContents()); 5819 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr)); 5820 for (const RelocationRef &Reloc : RelocSec.relocations()) { 5821 if (!IsSupportedFn || !IsSupportedFn(Reloc.getType())) 5822 reportError(createStringError( 5823 object_error::parse_failed, 5824 "unsupported relocation type in section %s: %s", 5825 getSectionName(RelocSec).data(), 5826 EF->getRelocationTypeName(Reloc.getType()).data()), 5827 Obj->getFileName()); 5828 this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName, 5829 Resolver, Data); 5830 } 5831 } 5832 } 5833 5834 template <class ELFT> 5835 void GNUStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) { 5836 bool HeaderHasBeenPrinted = false; 5837 auto PrintHeader = [&]() { 5838 if (HeaderHasBeenPrinted) 5839 return; 5840 OS << "\nStack Sizes:\n"; 5841 OS.PadToColumn(9); 5842 OS << "Size"; 5843 OS.PadToColumn(18); 5844 OS << "Function\n"; 5845 HeaderHasBeenPrinted = true; 5846 }; 5847 5848 // For non-relocatable objects, look directly for sections whose name starts 5849 // with .stack_sizes and process the contents. 5850 if (Obj->isRelocatableObject()) 5851 this->printRelocatableStackSizes(Obj, PrintHeader); 5852 else 5853 this->printNonRelocatableStackSizes(Obj, PrintHeader); 5854 } 5855 5856 template <class ELFT> 5857 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 5858 size_t Bias = ELFT::Is64Bits ? 8 : 0; 5859 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 5860 OS.PadToColumn(2); 5861 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 5862 OS.PadToColumn(11 + Bias); 5863 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 5864 OS.PadToColumn(22 + Bias); 5865 OS << format_hex_no_prefix(*E, 8 + Bias); 5866 OS.PadToColumn(31 + 2 * Bias); 5867 OS << Purpose << "\n"; 5868 }; 5869 5870 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 5871 OS << " Canonical gp value: " 5872 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 5873 5874 OS << " Reserved entries:\n"; 5875 if (ELFT::Is64Bits) 5876 OS << " Address Access Initial Purpose\n"; 5877 else 5878 OS << " Address Access Initial Purpose\n"; 5879 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 5880 if (Parser.getGotModulePointer()) 5881 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 5882 5883 if (!Parser.getLocalEntries().empty()) { 5884 OS << "\n"; 5885 OS << " Local entries:\n"; 5886 if (ELFT::Is64Bits) 5887 OS << " Address Access Initial\n"; 5888 else 5889 OS << " Address Access Initial\n"; 5890 for (auto &E : Parser.getLocalEntries()) 5891 PrintEntry(&E, ""); 5892 } 5893 5894 if (Parser.IsStatic) 5895 return; 5896 5897 if (!Parser.getGlobalEntries().empty()) { 5898 OS << "\n"; 5899 OS << " Global entries:\n"; 5900 if (ELFT::Is64Bits) 5901 OS << " Address Access Initial Sym.Val." 5902 << " Type Ndx Name\n"; 5903 else 5904 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 5905 for (auto &E : Parser.getGlobalEntries()) { 5906 const Elf_Sym *Sym = Parser.getGotSym(&E); 5907 std::string SymName = this->dumper()->getFullSymbolName( 5908 Sym, this->dumper()->getDynamicStringTable(), false); 5909 5910 OS.PadToColumn(2); 5911 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 5912 OS.PadToColumn(11 + Bias); 5913 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 5914 OS.PadToColumn(22 + Bias); 5915 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 5916 OS.PadToColumn(31 + 2 * Bias); 5917 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 5918 OS.PadToColumn(40 + 3 * Bias); 5919 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 5920 OS.PadToColumn(48 + 3 * Bias); 5921 OS << getSymbolSectionNdx(Parser.Obj, Sym, 5922 this->dumper()->dynamic_symbols().begin()); 5923 OS.PadToColumn(52 + 3 * Bias); 5924 OS << SymName << "\n"; 5925 } 5926 } 5927 5928 if (!Parser.getOtherEntries().empty()) 5929 OS << "\n Number of TLS and multi-GOT entries " 5930 << Parser.getOtherEntries().size() << "\n"; 5931 } 5932 5933 template <class ELFT> 5934 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 5935 size_t Bias = ELFT::Is64Bits ? 8 : 0; 5936 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 5937 OS.PadToColumn(2); 5938 OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias); 5939 OS.PadToColumn(11 + Bias); 5940 OS << format_hex_no_prefix(*E, 8 + Bias); 5941 OS.PadToColumn(20 + 2 * Bias); 5942 OS << Purpose << "\n"; 5943 }; 5944 5945 OS << "PLT GOT:\n\n"; 5946 5947 OS << " Reserved entries:\n"; 5948 OS << " Address Initial Purpose\n"; 5949 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 5950 if (Parser.getPltModulePointer()) 5951 PrintEntry(Parser.getPltModulePointer(), "Module pointer"); 5952 5953 if (!Parser.getPltEntries().empty()) { 5954 OS << "\n"; 5955 OS << " Entries:\n"; 5956 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 5957 for (auto &E : Parser.getPltEntries()) { 5958 const Elf_Sym *Sym = Parser.getPltSym(&E); 5959 std::string SymName = this->dumper()->getFullSymbolName( 5960 Sym, this->dumper()->getDynamicStringTable(), false); 5961 5962 OS.PadToColumn(2); 5963 OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias)); 5964 OS.PadToColumn(11 + Bias); 5965 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 5966 OS.PadToColumn(20 + 2 * Bias); 5967 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 5968 OS.PadToColumn(29 + 3 * Bias); 5969 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 5970 OS.PadToColumn(37 + 3 * Bias); 5971 OS << getSymbolSectionNdx(Parser.Obj, Sym, 5972 this->dumper()->dynamic_symbols().begin()); 5973 OS.PadToColumn(41 + 3 * Bias); 5974 OS << SymName << "\n"; 5975 } 5976 } 5977 } 5978 5979 template <class ELFT> 5980 void GNUStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) { 5981 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 5982 const Elf_Shdr *Shdr = 5983 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags"); 5984 if (!Shdr) 5985 return; 5986 5987 ArrayRef<uint8_t> Sec = 5988 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 5989 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) 5990 reportError(createError(".MIPS.abiflags section has a wrong size"), 5991 ObjF->getFileName()); 5992 5993 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 5994 5995 OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n"; 5996 OS << "ISA: MIPS" << int(Flags->isa_level); 5997 if (Flags->isa_rev > 1) 5998 OS << "r" << int(Flags->isa_rev); 5999 OS << "\n"; 6000 OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n"; 6001 OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n"; 6002 OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n"; 6003 OS << "FP ABI: " << printEnum(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)) 6004 << "\n"; 6005 OS << "ISA Extension: " 6006 << printEnum(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n"; 6007 if (Flags->ases == 0) 6008 OS << "ASEs: None\n"; 6009 else 6010 // FIXME: Print each flag on a separate line. 6011 OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags)) 6012 << "\n"; 6013 OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n"; 6014 OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n"; 6015 OS << "\n"; 6016 } 6017 6018 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 6019 const Elf_Ehdr *E = Obj->getHeader(); 6020 { 6021 DictScope D(W, "ElfHeader"); 6022 { 6023 DictScope D(W, "Ident"); 6024 W.printBinary("Magic", makeArrayRef(E->e_ident).slice(ELF::EI_MAG0, 4)); 6025 W.printEnum("Class", E->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 6026 W.printEnum("DataEncoding", E->e_ident[ELF::EI_DATA], 6027 makeArrayRef(ElfDataEncoding)); 6028 W.printNumber("FileVersion", E->e_ident[ELF::EI_VERSION]); 6029 6030 auto OSABI = makeArrayRef(ElfOSABI); 6031 if (E->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 6032 E->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 6033 switch (E->e_machine) { 6034 case ELF::EM_AMDGPU: 6035 OSABI = makeArrayRef(AMDGPUElfOSABI); 6036 break; 6037 case ELF::EM_ARM: 6038 OSABI = makeArrayRef(ARMElfOSABI); 6039 break; 6040 case ELF::EM_TI_C6000: 6041 OSABI = makeArrayRef(C6000ElfOSABI); 6042 break; 6043 } 6044 } 6045 W.printEnum("OS/ABI", E->e_ident[ELF::EI_OSABI], OSABI); 6046 W.printNumber("ABIVersion", E->e_ident[ELF::EI_ABIVERSION]); 6047 W.printBinary("Unused", makeArrayRef(E->e_ident).slice(ELF::EI_PAD)); 6048 } 6049 6050 W.printEnum("Type", E->e_type, makeArrayRef(ElfObjectFileType)); 6051 W.printEnum("Machine", E->e_machine, makeArrayRef(ElfMachineType)); 6052 W.printNumber("Version", E->e_version); 6053 W.printHex("Entry", E->e_entry); 6054 W.printHex("ProgramHeaderOffset", E->e_phoff); 6055 W.printHex("SectionHeaderOffset", E->e_shoff); 6056 if (E->e_machine == EM_MIPS) 6057 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderMipsFlags), 6058 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 6059 unsigned(ELF::EF_MIPS_MACH)); 6060 else if (E->e_machine == EM_AMDGPU) 6061 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 6062 unsigned(ELF::EF_AMDGPU_MACH)); 6063 else if (E->e_machine == EM_RISCV) 6064 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 6065 else 6066 W.printFlags("Flags", E->e_flags); 6067 W.printNumber("HeaderSize", E->e_ehsize); 6068 W.printNumber("ProgramHeaderEntrySize", E->e_phentsize); 6069 W.printNumber("ProgramHeaderCount", E->e_phnum); 6070 W.printNumber("SectionHeaderEntrySize", E->e_shentsize); 6071 W.printString("SectionHeaderCount", 6072 getSectionHeadersNumString(Obj, this->FileName)); 6073 W.printString("StringTableSectionIndex", 6074 getSectionHeaderTableIndexString(Obj, this->FileName)); 6075 } 6076 } 6077 6078 template <class ELFT> 6079 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 6080 DictScope Lists(W, "Groups"); 6081 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName); 6082 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 6083 for (const GroupSection &G : V) { 6084 DictScope D(W, "Group"); 6085 W.printNumber("Name", G.Name, G.ShName); 6086 W.printNumber("Index", G.Index); 6087 W.printNumber("Link", G.Link); 6088 W.printNumber("Info", G.Info); 6089 W.printHex("Type", getGroupType(G.Type), G.Type); 6090 W.startLine() << "Signature: " << G.Signature << "\n"; 6091 6092 ListScope L(W, "Section(s) in group"); 6093 for (const GroupMember &GM : G.Members) { 6094 const GroupSection *MainGroup = Map[GM.Index]; 6095 if (MainGroup != &G) { 6096 W.flush(); 6097 errs() << "Error: " << GM.Name << " (" << GM.Index 6098 << ") in a group " + G.Name + " (" << G.Index 6099 << ") is already in a group " + MainGroup->Name + " (" 6100 << MainGroup->Index << ")\n"; 6101 errs().flush(); 6102 continue; 6103 } 6104 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 6105 } 6106 } 6107 6108 if (V.empty()) 6109 W.startLine() << "There are no group sections in the file.\n"; 6110 } 6111 6112 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 6113 ListScope D(W, "Relocations"); 6114 6115 int SectionNumber = -1; 6116 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 6117 ++SectionNumber; 6118 6119 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 6120 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL && 6121 Sec.sh_type != ELF::SHT_ANDROID_RELA && 6122 Sec.sh_type != ELF::SHT_ANDROID_RELR) 6123 continue; 6124 6125 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec)); 6126 6127 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 6128 W.indent(); 6129 6130 printRelocations(&Sec, Obj); 6131 6132 W.unindent(); 6133 W.startLine() << "}\n"; 6134 } 6135 } 6136 6137 template <class ELFT> 6138 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 6139 const Elf_Shdr *SymTab = 6140 unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link)); 6141 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front(); 6142 unsigned RelNdx = 0; 6143 6144 switch (Sec->sh_type) { 6145 case ELF::SHT_REL: 6146 for (const Elf_Rel &R : unwrapOrError(this->FileName, Obj->rels(Sec))) { 6147 Elf_Rela Rela; 6148 Rela.r_offset = R.r_offset; 6149 Rela.r_info = R.r_info; 6150 Rela.r_addend = 0; 6151 printRelocation(Obj, SecNdx, Rela, ++RelNdx, SymTab); 6152 } 6153 break; 6154 case ELF::SHT_RELA: 6155 for (const Elf_Rela &R : unwrapOrError(this->FileName, Obj->relas(Sec))) 6156 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6157 break; 6158 case ELF::SHT_RELR: 6159 case ELF::SHT_ANDROID_RELR: { 6160 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(Sec)); 6161 if (opts::RawRelr) { 6162 for (const Elf_Relr &R : Relrs) 6163 W.startLine() << W.hex(R) << "\n"; 6164 } else { 6165 std::vector<Elf_Rela> RelrRelas = 6166 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 6167 for (const Elf_Rela &R : RelrRelas) 6168 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6169 } 6170 break; 6171 } 6172 case ELF::SHT_ANDROID_REL: 6173 case ELF::SHT_ANDROID_RELA: 6174 for (const Elf_Rela &R : 6175 unwrapOrError(this->FileName, Obj->android_relas(Sec))) 6176 printRelocation(Obj, SecNdx, R, ++RelNdx, SymTab); 6177 break; 6178 } 6179 } 6180 6181 template <class ELFT> 6182 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, unsigned SecIndex, 6183 Elf_Rela Rel, unsigned RelIndex, 6184 const Elf_Shdr *SymTab) { 6185 Expected<std::pair<const typename ELFT::Sym *, std::string>> Target = 6186 this->dumper()->getRelocationTarget(SymTab, Rel); 6187 if (!Target) { 6188 this->reportUniqueWarning(createError( 6189 "unable to print relocation " + Twine(RelIndex) + " in section " + 6190 Twine(SecIndex) + ": " + toString(Target.takeError()))); 6191 return; 6192 } 6193 6194 std::string TargetName = Target->second; 6195 SmallString<32> RelocName; 6196 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 6197 6198 if (opts::ExpandRelocs) { 6199 DictScope Group(W, "Relocation"); 6200 W.printHex("Offset", Rel.r_offset); 6201 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 6202 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 6203 Rel.getSymbol(Obj->isMips64EL())); 6204 W.printHex("Addend", Rel.r_addend); 6205 } else { 6206 raw_ostream &OS = W.startLine(); 6207 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 6208 << (!TargetName.empty() ? TargetName : "-") << " " << W.hex(Rel.r_addend) 6209 << "\n"; 6210 } 6211 } 6212 6213 template <class ELFT> 6214 void LLVMStyle<ELFT>::printSectionHeaders(const ELFO *Obj) { 6215 ListScope SectionsD(W, "Sections"); 6216 6217 int SectionIndex = -1; 6218 std::vector<EnumEntry<unsigned>> FlagsList = 6219 getSectionFlagsForTarget(Obj->getHeader()->e_machine); 6220 for (const Elf_Shdr &Sec : cantFail(Obj->sections())) { 6221 StringRef Name = "<?>"; 6222 if (Expected<StringRef> SecNameOrErr = 6223 Obj->getSectionName(&Sec, this->dumper()->WarningHandler)) 6224 Name = *SecNameOrErr; 6225 else 6226 this->reportUniqueWarning(SecNameOrErr.takeError()); 6227 6228 DictScope SectionD(W, "Section"); 6229 W.printNumber("Index", ++SectionIndex); 6230 W.printNumber("Name", Name, Sec.sh_name); 6231 W.printHex( 6232 "Type", 6233 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 6234 Sec.sh_type); 6235 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList)); 6236 W.printHex("Address", Sec.sh_addr); 6237 W.printHex("Offset", Sec.sh_offset); 6238 W.printNumber("Size", Sec.sh_size); 6239 W.printNumber("Link", Sec.sh_link); 6240 W.printNumber("Info", Sec.sh_info); 6241 W.printNumber("AddressAlignment", Sec.sh_addralign); 6242 W.printNumber("EntrySize", Sec.sh_entsize); 6243 6244 if (opts::SectionRelocations) { 6245 ListScope D(W, "Relocations"); 6246 printRelocations(&Sec, Obj); 6247 } 6248 6249 if (opts::SectionSymbols) { 6250 ListScope D(W, "Symbols"); 6251 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 6252 StringRef StrTable = 6253 unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*Symtab)); 6254 6255 for (const Elf_Sym &Sym : 6256 unwrapOrError(this->FileName, Obj->symbols(Symtab))) { 6257 const Elf_Shdr *SymSec = unwrapOrError( 6258 this->FileName, 6259 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 6260 if (SymSec == &Sec) 6261 printSymbol( 6262 Obj, &Sym, 6263 unwrapOrError(this->FileName, Obj->symbols(Symtab)).begin(), 6264 StrTable, false, false); 6265 } 6266 } 6267 6268 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 6269 ArrayRef<uint8_t> Data = 6270 unwrapOrError(this->FileName, Obj->getSectionContents(&Sec)); 6271 W.printBinaryBlock( 6272 "SectionData", 6273 StringRef(reinterpret_cast<const char *>(Data.data()), Data.size())); 6274 } 6275 } 6276 } 6277 6278 template <class ELFT> 6279 void LLVMStyle<ELFT>::printSymbolSection(const Elf_Sym *Symbol, 6280 const Elf_Sym *First) { 6281 Expected<unsigned> SectionIndex = 6282 this->dumper()->getSymbolSectionIndex(Symbol, First); 6283 if (!SectionIndex) { 6284 assert(Symbol->st_shndx == SHN_XINDEX && 6285 "getSymbolSectionIndex should only fail due to an invalid " 6286 "SHT_SYMTAB_SHNDX table/reference"); 6287 this->reportUniqueWarning(SectionIndex.takeError()); 6288 W.printHex("Section", "Reserved", SHN_XINDEX); 6289 return; 6290 } 6291 6292 Expected<StringRef> SectionName = 6293 this->dumper()->getSymbolSectionName(Symbol, *SectionIndex); 6294 if (!SectionName) { 6295 // Don't report an invalid section name if the section headers are missing. 6296 // In such situations, all sections will be "invalid". 6297 if (!this->dumper()->getElfObject()->sections().empty()) 6298 this->reportUniqueWarning(SectionName.takeError()); 6299 else 6300 consumeError(SectionName.takeError()); 6301 W.printHex("Section", "<?>", *SectionIndex); 6302 } else { 6303 W.printHex("Section", *SectionName, *SectionIndex); 6304 } 6305 } 6306 6307 template <class ELFT> 6308 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 6309 const Elf_Sym *First, 6310 Optional<StringRef> StrTable, bool IsDynamic, 6311 bool /*NonVisibilityBitsUsed*/) { 6312 std::string FullSymbolName = 6313 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 6314 unsigned char SymbolType = Symbol->getType(); 6315 6316 DictScope D(W, "Symbol"); 6317 W.printNumber("Name", FullSymbolName, Symbol->st_name); 6318 W.printHex("Value", Symbol->st_value); 6319 W.printNumber("Size", Symbol->st_size); 6320 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 6321 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 6322 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 6323 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 6324 else 6325 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 6326 if (Symbol->st_other == 0) 6327 // Usually st_other flag is zero. Do not pollute the output 6328 // by flags enumeration in that case. 6329 W.printNumber("Other", 0); 6330 else { 6331 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 6332 std::end(ElfSymOtherFlags)); 6333 if (Obj->getHeader()->e_machine == EM_MIPS) { 6334 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 6335 // flag overlapped with other ST_MIPS_xxx flags. So consider both 6336 // cases separately. 6337 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 6338 SymOtherFlags.insert(SymOtherFlags.end(), 6339 std::begin(ElfMips16SymOtherFlags), 6340 std::end(ElfMips16SymOtherFlags)); 6341 else 6342 SymOtherFlags.insert(SymOtherFlags.end(), 6343 std::begin(ElfMipsSymOtherFlags), 6344 std::end(ElfMipsSymOtherFlags)); 6345 } 6346 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 6347 } 6348 printSymbolSection(Symbol, First); 6349 } 6350 6351 template <class ELFT> 6352 void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols, 6353 bool PrintDynamicSymbols) { 6354 if (PrintSymbols) 6355 printSymbols(Obj); 6356 if (PrintDynamicSymbols) 6357 printDynamicSymbols(Obj); 6358 } 6359 6360 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 6361 ListScope Group(W, "Symbols"); 6362 this->dumper()->printSymbolsHelper(false); 6363 } 6364 6365 template <class ELFT> 6366 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 6367 ListScope Group(W, "DynamicSymbols"); 6368 this->dumper()->printSymbolsHelper(true); 6369 } 6370 6371 template <class ELFT> void LLVMStyle<ELFT>::printDynamic(const ELFFile<ELFT> *Obj) { 6372 Elf_Dyn_Range Table = this->dumper()->dynamic_table(); 6373 if (Table.empty()) 6374 return; 6375 6376 W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n"; 6377 6378 size_t MaxTagSize = getMaxDynamicTagSize(Obj, Table); 6379 // The "Name/Value" column should be indented from the "Type" column by N 6380 // spaces, where N = MaxTagSize - length of "Type" (4) + trailing 6381 // space (1) = -3. 6382 W.startLine() << " Tag" << std::string(ELFT::Is64Bits ? 16 : 8, ' ') 6383 << "Type" << std::string(MaxTagSize - 3, ' ') << "Name/Value\n"; 6384 6385 std::string ValueFmt = "%-" + std::to_string(MaxTagSize) + "s "; 6386 for (auto Entry : Table) { 6387 uintX_t Tag = Entry.getTag(); 6388 std::string Value = this->dumper()->getDynamicEntry(Tag, Entry.getVal()); 6389 W.startLine() << " " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10, true) 6390 << " " 6391 << format(ValueFmt.c_str(), 6392 Obj->getDynamicTagAsString(Tag).c_str()) 6393 << Value << "\n"; 6394 } 6395 W.startLine() << "]\n"; 6396 } 6397 6398 template <class ELFT> 6399 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 6400 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 6401 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 6402 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 6403 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 6404 if (DynRelRegion.Size && DynRelaRegion.Size) 6405 report_fatal_error("There are both REL and RELA dynamic relocations"); 6406 W.startLine() << "Dynamic Relocations {\n"; 6407 W.indent(); 6408 if (DynRelaRegion.Size > 0) 6409 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 6410 printDynamicRelocation(Obj, Rela); 6411 else 6412 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 6413 Elf_Rela Rela; 6414 Rela.r_offset = Rel.r_offset; 6415 Rela.r_info = Rel.r_info; 6416 Rela.r_addend = 0; 6417 printDynamicRelocation(Obj, Rela); 6418 } 6419 if (DynRelrRegion.Size > 0) { 6420 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 6421 std::vector<Elf_Rela> RelrRelas = 6422 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs)); 6423 for (const Elf_Rela &Rela : RelrRelas) 6424 printDynamicRelocation(Obj, Rela); 6425 } 6426 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 6427 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 6428 printDynamicRelocation(Obj, Rela); 6429 else 6430 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 6431 Elf_Rela Rela; 6432 Rela.r_offset = Rel.r_offset; 6433 Rela.r_info = Rel.r_info; 6434 Rela.r_addend = 0; 6435 printDynamicRelocation(Obj, Rela); 6436 } 6437 W.unindent(); 6438 W.startLine() << "}\n"; 6439 } 6440 6441 template <class ELFT> 6442 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 6443 SmallString<32> RelocName; 6444 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 6445 std::string SymbolName = 6446 getSymbolForReloc(Obj, this->FileName, this->dumper(), Rel).Name; 6447 6448 if (opts::ExpandRelocs) { 6449 DictScope Group(W, "Relocation"); 6450 W.printHex("Offset", Rel.r_offset); 6451 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 6452 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 6453 W.printHex("Addend", Rel.r_addend); 6454 } else { 6455 raw_ostream &OS = W.startLine(); 6456 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 6457 << (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Rel.r_addend) 6458 << "\n"; 6459 } 6460 } 6461 6462 template <class ELFT> 6463 void LLVMStyle<ELFT>::printProgramHeaders( 6464 const ELFO *Obj, bool PrintProgramHeaders, 6465 cl::boolOrDefault PrintSectionMapping) { 6466 if (PrintProgramHeaders) 6467 printProgramHeaders(Obj); 6468 if (PrintSectionMapping == cl::BOU_TRUE) 6469 printSectionMapping(Obj); 6470 } 6471 6472 template <class ELFT> 6473 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 6474 ListScope L(W, "ProgramHeaders"); 6475 6476 for (const Elf_Phdr &Phdr : 6477 unwrapOrError(this->FileName, Obj->program_headers())) { 6478 DictScope P(W, "ProgramHeader"); 6479 W.printHex("Type", 6480 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 6481 Phdr.p_type); 6482 W.printHex("Offset", Phdr.p_offset); 6483 W.printHex("VirtualAddress", Phdr.p_vaddr); 6484 W.printHex("PhysicalAddress", Phdr.p_paddr); 6485 W.printNumber("FileSize", Phdr.p_filesz); 6486 W.printNumber("MemSize", Phdr.p_memsz); 6487 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 6488 W.printNumber("Alignment", Phdr.p_align); 6489 } 6490 } 6491 6492 template <class ELFT> 6493 void LLVMStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj, 6494 const Elf_Shdr *Sec) { 6495 ListScope SS(W, "VersionSymbols"); 6496 if (!Sec) 6497 return; 6498 6499 StringRef StrTable; 6500 ArrayRef<Elf_Sym> Syms; 6501 Expected<ArrayRef<Elf_Versym>> VerTableOrErr = 6502 this->dumper()->getVersionTable(Sec, &Syms, &StrTable); 6503 if (!VerTableOrErr) { 6504 this->reportUniqueWarning(VerTableOrErr.takeError()); 6505 return; 6506 } 6507 6508 if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size()) 6509 return; 6510 6511 for (size_t I = 0, E = Syms.size(); I < E; ++I) { 6512 DictScope S(W, "Symbol"); 6513 W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION); 6514 W.printString("Name", this->dumper()->getFullSymbolName( 6515 &Syms[I], StrTable, /*IsDynamic=*/true)); 6516 } 6517 } 6518 6519 template <class ELFT> 6520 void LLVMStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj, 6521 const Elf_Shdr *Sec) { 6522 ListScope SD(W, "VersionDefinitions"); 6523 if (!Sec) 6524 return; 6525 6526 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec); 6527 if (!V) { 6528 this->reportUniqueWarning(V.takeError()); 6529 return; 6530 } 6531 6532 for (const VerDef &D : *V) { 6533 DictScope Def(W, "Definition"); 6534 W.printNumber("Version", D.Version); 6535 W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags)); 6536 W.printNumber("Index", D.Ndx); 6537 W.printNumber("Hash", D.Hash); 6538 W.printString("Name", D.Name.c_str()); 6539 W.printList( 6540 "Predecessors", D.AuxV, 6541 [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); }); 6542 } 6543 } 6544 6545 template <class ELFT> 6546 void LLVMStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj, 6547 const Elf_Shdr *Sec) { 6548 ListScope SD(W, "VersionRequirements"); 6549 if (!Sec) 6550 return; 6551 6552 Expected<std::vector<VerNeed>> V = 6553 this->dumper()->getVersionDependencies(Sec); 6554 if (!V) { 6555 this->reportUniqueWarning(V.takeError()); 6556 return; 6557 } 6558 6559 for (const VerNeed &VN : *V) { 6560 DictScope Entry(W, "Dependency"); 6561 W.printNumber("Version", VN.Version); 6562 W.printNumber("Count", VN.Cnt); 6563 W.printString("FileName", VN.File.c_str()); 6564 6565 ListScope L(W, "Entries"); 6566 for (const VernAux &Aux : VN.AuxV) { 6567 DictScope Entry(W, "Entry"); 6568 W.printNumber("Hash", Aux.Hash); 6569 W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags)); 6570 W.printNumber("Index", Aux.Other); 6571 W.printString("Name", Aux.Name.c_str()); 6572 } 6573 } 6574 } 6575 6576 template <class ELFT> 6577 void LLVMStyle<ELFT>::printHashHistograms(const ELFFile<ELFT> *Obj) { 6578 W.startLine() << "Hash Histogram not implemented!\n"; 6579 } 6580 6581 template <class ELFT> 6582 void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 6583 ListScope L(W, "CGProfile"); 6584 if (!this->dumper()->getDotCGProfileSec()) 6585 return; 6586 6587 Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr = 6588 Obj->template getSectionContentsAsArray<Elf_CGProfile>( 6589 this->dumper()->getDotCGProfileSec()); 6590 if (!CGProfileOrErr) { 6591 this->reportUniqueWarning( 6592 createError("unable to dump the SHT_LLVM_CALL_GRAPH_PROFILE section: " + 6593 toString(CGProfileOrErr.takeError()))); 6594 return; 6595 } 6596 6597 for (const Elf_CGProfile &CGPE : *CGProfileOrErr) { 6598 DictScope D(W, "CGProfileEntry"); 6599 W.printNumber("From", this->dumper()->getStaticSymbolName(CGPE.cgp_from), 6600 CGPE.cgp_from); 6601 W.printNumber("To", this->dumper()->getStaticSymbolName(CGPE.cgp_to), 6602 CGPE.cgp_to); 6603 W.printNumber("Weight", CGPE.cgp_weight); 6604 } 6605 } 6606 6607 static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) { 6608 std::vector<uint64_t> Ret; 6609 const uint8_t *Cur = Data.begin(); 6610 const uint8_t *End = Data.end(); 6611 while (Cur != End) { 6612 unsigned Size; 6613 const char *Err; 6614 Ret.push_back(decodeULEB128(Cur, &Size, End, &Err)); 6615 if (Err) 6616 return createError(Err); 6617 Cur += Size; 6618 } 6619 return Ret; 6620 } 6621 6622 template <class ELFT> 6623 void LLVMStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) { 6624 ListScope L(W, "Addrsig"); 6625 if (!this->dumper()->getDotAddrsigSec()) 6626 return; 6627 ArrayRef<uint8_t> Contents = unwrapOrError( 6628 this->FileName, 6629 Obj->getSectionContents(this->dumper()->getDotAddrsigSec())); 6630 Expected<std::vector<uint64_t>> V = toULEB128Array(Contents); 6631 if (!V) { 6632 reportWarning(V.takeError(), this->FileName); 6633 return; 6634 } 6635 6636 for (uint64_t Sym : *V) { 6637 Expected<std::string> NameOrErr = this->dumper()->getStaticSymbolName(Sym); 6638 if (NameOrErr) { 6639 W.printNumber("Sym", *NameOrErr, Sym); 6640 continue; 6641 } 6642 reportWarning(NameOrErr.takeError(), this->FileName); 6643 W.printNumber("Sym", "<?>", Sym); 6644 } 6645 } 6646 6647 template <typename ELFT> 6648 static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc, 6649 ScopedPrinter &W) { 6650 switch (NoteType) { 6651 default: 6652 return; 6653 case ELF::NT_GNU_ABI_TAG: { 6654 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc); 6655 if (!AbiTag.IsValid) { 6656 W.printString("ABI", "<corrupt GNU_ABI_TAG>"); 6657 } else { 6658 W.printString("OS", AbiTag.OSName); 6659 W.printString("ABI", AbiTag.ABI); 6660 } 6661 break; 6662 } 6663 case ELF::NT_GNU_BUILD_ID: { 6664 W.printString("Build ID", getGNUBuildId(Desc)); 6665 break; 6666 } 6667 case ELF::NT_GNU_GOLD_VERSION: 6668 W.printString("Version", getGNUGoldVersion(Desc)); 6669 break; 6670 case ELF::NT_GNU_PROPERTY_TYPE_0: 6671 ListScope D(W, "Property"); 6672 for (const auto &Property : getGNUPropertyList<ELFT>(Desc)) 6673 W.printString(Property); 6674 break; 6675 } 6676 } 6677 6678 static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) { 6679 W.printNumber("Page Size", Note.PageSize); 6680 for (const CoreFileMapping &Mapping : Note.Mappings) { 6681 ListScope D(W, "Mapping"); 6682 W.printHex("Start", Mapping.Start); 6683 W.printHex("End", Mapping.End); 6684 W.printHex("Offset", Mapping.Offset); 6685 W.printString("Filename", Mapping.Filename); 6686 } 6687 } 6688 6689 template <class ELFT> 6690 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 6691 ListScope L(W, "Notes"); 6692 6693 auto PrintHeader = [&](Optional<StringRef> SecName, 6694 const typename ELFT::Off Offset, 6695 const typename ELFT::Addr Size) { 6696 W.printString("Name", SecName ? *SecName : "<?>"); 6697 W.printHex("Offset", Offset); 6698 W.printHex("Size", Size); 6699 }; 6700 6701 auto ProcessNote = [&](const Elf_Note &Note) { 6702 DictScope D2(W, "Note"); 6703 StringRef Name = Note.getName(); 6704 ArrayRef<uint8_t> Descriptor = Note.getDesc(); 6705 Elf_Word Type = Note.getType(); 6706 6707 // Print the note owner/type. 6708 W.printString("Owner", Name); 6709 W.printHex("Data size", Descriptor.size()); 6710 if (Name == "GNU") { 6711 W.printString("Type", getGNUNoteTypeName(Type)); 6712 } else if (Name == "FreeBSD") { 6713 W.printString("Type", getFreeBSDNoteTypeName(Type)); 6714 } else if (Name == "AMD") { 6715 W.printString("Type", getAMDNoteTypeName(Type)); 6716 } else if (Name == "AMDGPU") { 6717 W.printString("Type", getAMDGPUNoteTypeName(Type)); 6718 } else { 6719 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE 6720 ? getCoreNoteTypeName(Type) 6721 : getGenericNoteTypeName(Type); 6722 if (!NoteType.empty()) 6723 W.printString("Type", NoteType); 6724 else 6725 W.printString("Type", 6726 "Unknown (" + to_string(format_hex(Type, 10)) + ")"); 6727 } 6728 6729 // Print the description, or fallback to printing raw bytes for unknown 6730 // owners. 6731 if (Name == "GNU") { 6732 printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W); 6733 } else if (Name == "AMD") { 6734 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor); 6735 if (!N.Type.empty()) 6736 W.printString(N.Type, N.Value); 6737 } else if (Name == "AMDGPU") { 6738 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor); 6739 if (!N.Type.empty()) 6740 W.printString(N.Type, N.Value); 6741 } else if (Name == "CORE") { 6742 if (Type == ELF::NT_FILE) { 6743 DataExtractor DescExtractor(Descriptor, 6744 ELFT::TargetEndianness == support::little, 6745 sizeof(Elf_Addr)); 6746 Expected<CoreNote> Note = readCoreNote(DescExtractor); 6747 if (Note) 6748 printCoreNoteLLVMStyle(*Note, W); 6749 else 6750 reportWarning(Note.takeError(), this->FileName); 6751 } 6752 } else if (!Descriptor.empty()) { 6753 W.printBinaryBlock("Description data", Descriptor); 6754 } 6755 }; 6756 6757 ArrayRef<Elf_Shdr> Sections = cantFail(Obj->sections()); 6758 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) { 6759 for (const auto &S : Sections) { 6760 if (S.sh_type != SHT_NOTE) 6761 continue; 6762 DictScope D(W, "NoteSection"); 6763 PrintHeader(expectedToOptional(Obj->getSectionName(&S)), S.sh_offset, 6764 S.sh_size); 6765 Error Err = Error::success(); 6766 for (auto Note : Obj->notes(S, Err)) 6767 ProcessNote(Note); 6768 if (Err) 6769 reportError(std::move(Err), this->FileName); 6770 } 6771 } else { 6772 for (const auto &P : 6773 unwrapOrError(this->FileName, Obj->program_headers())) { 6774 if (P.p_type != PT_NOTE) 6775 continue; 6776 DictScope D(W, "NoteSection"); 6777 PrintHeader(/*SecName=*/None, P.p_offset, P.p_filesz); 6778 Error Err = Error::success(); 6779 for (auto Note : Obj->notes(P, Err)) 6780 ProcessNote(Note); 6781 if (Err) 6782 reportError(std::move(Err), this->FileName); 6783 } 6784 } 6785 } 6786 6787 template <class ELFT> 6788 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 6789 ListScope L(W, "LinkerOptions"); 6790 6791 unsigned I = -1; 6792 for (const Elf_Shdr &Shdr : cantFail(Obj->sections())) { 6793 ++I; 6794 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) 6795 continue; 6796 6797 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(&Shdr); 6798 if (!ContentsOrErr) { 6799 this->reportUniqueWarning( 6800 createError("unable to read the content of the " 6801 "SHT_LLVM_LINKER_OPTIONS section: " + 6802 toString(ContentsOrErr.takeError()))); 6803 continue; 6804 } 6805 if (ContentsOrErr->empty()) 6806 continue; 6807 6808 if (ContentsOrErr->back() != 0) { 6809 this->reportUniqueWarning( 6810 createError("SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + 6811 " is broken: the " 6812 "content is not null-terminated")); 6813 continue; 6814 } 6815 6816 SmallVector<StringRef, 16> Strings; 6817 toStringRef(ContentsOrErr->drop_back()).split(Strings, '\0'); 6818 if (Strings.size() % 2 != 0) { 6819 this->reportUniqueWarning(createError( 6820 "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) + 6821 " is broken: an incomplete " 6822 "key-value pair was found. The last possible key was: \"" + 6823 Strings.back() + "\"")); 6824 continue; 6825 } 6826 6827 for (size_t I = 0; I < Strings.size(); I += 2) 6828 W.printString(Strings[I], Strings[I + 1]); 6829 } 6830 } 6831 6832 template <class ELFT> 6833 void LLVMStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) { 6834 ListScope L(W, "DependentLibs"); 6835 this->printDependentLibsHelper( 6836 Obj, [](const Elf_Shdr &) {}, 6837 [this](StringRef Lib, uint64_t) { W.printString(Lib); }); 6838 } 6839 6840 template <class ELFT> 6841 void LLVMStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) { 6842 ListScope L(W, "StackSizes"); 6843 if (Obj->isRelocatableObject()) 6844 this->printRelocatableStackSizes(Obj, []() {}); 6845 else 6846 this->printNonRelocatableStackSizes(Obj, []() {}); 6847 } 6848 6849 template <class ELFT> 6850 void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) { 6851 DictScope D(W, "Entry"); 6852 W.printString("Function", FuncName); 6853 W.printHex("Size", Size); 6854 } 6855 6856 template <class ELFT> 6857 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 6858 auto PrintEntry = [&](const Elf_Addr *E) { 6859 W.printHex("Address", Parser.getGotAddress(E)); 6860 W.printNumber("Access", Parser.getGotOffset(E)); 6861 W.printHex("Initial", *E); 6862 }; 6863 6864 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 6865 6866 W.printHex("Canonical gp value", Parser.getGp()); 6867 { 6868 ListScope RS(W, "Reserved entries"); 6869 { 6870 DictScope D(W, "Entry"); 6871 PrintEntry(Parser.getGotLazyResolver()); 6872 W.printString("Purpose", StringRef("Lazy resolver")); 6873 } 6874 6875 if (Parser.getGotModulePointer()) { 6876 DictScope D(W, "Entry"); 6877 PrintEntry(Parser.getGotModulePointer()); 6878 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 6879 } 6880 } 6881 { 6882 ListScope LS(W, "Local entries"); 6883 for (auto &E : Parser.getLocalEntries()) { 6884 DictScope D(W, "Entry"); 6885 PrintEntry(&E); 6886 } 6887 } 6888 6889 if (Parser.IsStatic) 6890 return; 6891 6892 { 6893 ListScope GS(W, "Global entries"); 6894 for (auto &E : Parser.getGlobalEntries()) { 6895 DictScope D(W, "Entry"); 6896 6897 PrintEntry(&E); 6898 6899 const Elf_Sym *Sym = Parser.getGotSym(&E); 6900 W.printHex("Value", Sym->st_value); 6901 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 6902 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin()); 6903 6904 std::string SymName = this->dumper()->getFullSymbolName( 6905 Sym, this->dumper()->getDynamicStringTable(), true); 6906 W.printNumber("Name", SymName, Sym->st_name); 6907 } 6908 } 6909 6910 W.printNumber("Number of TLS and multi-GOT entries", 6911 uint64_t(Parser.getOtherEntries().size())); 6912 } 6913 6914 template <class ELFT> 6915 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 6916 auto PrintEntry = [&](const Elf_Addr *E) { 6917 W.printHex("Address", Parser.getPltAddress(E)); 6918 W.printHex("Initial", *E); 6919 }; 6920 6921 DictScope GS(W, "PLT GOT"); 6922 6923 { 6924 ListScope RS(W, "Reserved entries"); 6925 { 6926 DictScope D(W, "Entry"); 6927 PrintEntry(Parser.getPltLazyResolver()); 6928 W.printString("Purpose", StringRef("PLT lazy resolver")); 6929 } 6930 6931 if (auto E = Parser.getPltModulePointer()) { 6932 DictScope D(W, "Entry"); 6933 PrintEntry(E); 6934 W.printString("Purpose", StringRef("Module pointer")); 6935 } 6936 } 6937 { 6938 ListScope LS(W, "Entries"); 6939 for (auto &E : Parser.getPltEntries()) { 6940 DictScope D(W, "Entry"); 6941 PrintEntry(&E); 6942 6943 const Elf_Sym *Sym = Parser.getPltSym(&E); 6944 W.printHex("Value", Sym->st_value); 6945 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 6946 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin()); 6947 6948 std::string SymName = 6949 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true); 6950 W.printNumber("Name", SymName, Sym->st_name); 6951 } 6952 } 6953 } 6954 6955 template <class ELFT> 6956 void LLVMStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) { 6957 const ELFFile<ELFT> *Obj = ObjF->getELFFile(); 6958 const Elf_Shdr *Shdr = 6959 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags"); 6960 if (!Shdr) { 6961 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 6962 return; 6963 } 6964 ArrayRef<uint8_t> Sec = 6965 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr)); 6966 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 6967 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 6968 return; 6969 } 6970 6971 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 6972 6973 raw_ostream &OS = W.getOStream(); 6974 DictScope GS(W, "MIPS ABI Flags"); 6975 6976 W.printNumber("Version", Flags->version); 6977 W.startLine() << "ISA: "; 6978 if (Flags->isa_rev <= 1) 6979 OS << format("MIPS%u", Flags->isa_level); 6980 else 6981 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 6982 OS << "\n"; 6983 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 6984 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 6985 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 6986 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 6987 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 6988 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 6989 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 6990 W.printHex("Flags 2", Flags->flags2); 6991 } 6992