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