1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "ARMEHABIPrinter.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/Optional.h" 23 #include "llvm/ADT/PointerIntPair.h" 24 #include "llvm/ADT/SmallString.h" 25 #include "llvm/ADT/SmallVector.h" 26 #include "llvm/ADT/STLExtras.h" 27 #include "llvm/ADT/StringExtras.h" 28 #include "llvm/ADT/StringRef.h" 29 #include "llvm/ADT/Twine.h" 30 #include "llvm/BinaryFormat/ELF.h" 31 #include "llvm/Object/ELF.h" 32 #include "llvm/Object/ELFObjectFile.h" 33 #include "llvm/Object/ELFTypes.h" 34 #include "llvm/Object/Error.h" 35 #include "llvm/Object/ObjectFile.h" 36 #include "llvm/Object/StackMapParser.h" 37 #include "llvm/Support/AMDGPUMetadata.h" 38 #include "llvm/Support/ARMAttributeParser.h" 39 #include "llvm/Support/ARMBuildAttributes.h" 40 #include "llvm/Support/Casting.h" 41 #include "llvm/Support/Compiler.h" 42 #include "llvm/Support/Endian.h" 43 #include "llvm/Support/ErrorHandling.h" 44 #include "llvm/Support/Format.h" 45 #include "llvm/Support/FormattedStream.h" 46 #include "llvm/Support/MathExtras.h" 47 #include "llvm/Support/MipsABIFlags.h" 48 #include "llvm/Support/ScopedPrinter.h" 49 #include "llvm/Support/raw_ostream.h" 50 #include <algorithm> 51 #include <cinttypes> 52 #include <cstddef> 53 #include <cstdint> 54 #include <cstdlib> 55 #include <iterator> 56 #include <memory> 57 #include <string> 58 #include <system_error> 59 #include <vector> 60 61 using namespace llvm; 62 using namespace llvm::object; 63 using namespace ELF; 64 65 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 66 case ns::enum: return #enum; 67 68 #define ENUM_ENT(enum, altName) \ 69 { #enum, altName, ELF::enum } 70 71 #define ENUM_ENT_1(enum) \ 72 { #enum, #enum, ELF::enum } 73 74 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 75 case ns::enum: \ 76 return std::string(#enum).substr(3); 77 78 #define TYPEDEF_ELF_TYPES(ELFT) \ 79 using ELFO = ELFFile<ELFT>; \ 80 using Elf_Shdr = typename ELFO::Elf_Shdr; \ 81 using Elf_Sym = typename ELFO::Elf_Sym; \ 82 using Elf_Dyn = typename ELFO::Elf_Dyn; \ 83 using Elf_Dyn_Range = typename ELFO::Elf_Dyn_Range; \ 84 using Elf_Rel = typename ELFO::Elf_Rel; \ 85 using Elf_Rela = typename ELFO::Elf_Rela; \ 86 using Elf_Rel_Range = typename ELFO::Elf_Rel_Range; \ 87 using Elf_Rela_Range = typename ELFO::Elf_Rela_Range; \ 88 using Elf_Phdr = typename ELFO::Elf_Phdr; \ 89 using Elf_Half = typename ELFO::Elf_Half; \ 90 using Elf_Ehdr = typename ELFO::Elf_Ehdr; \ 91 using Elf_Word = typename ELFO::Elf_Word; \ 92 using Elf_Hash = typename ELFO::Elf_Hash; \ 93 using Elf_GnuHash = typename ELFO::Elf_GnuHash; \ 94 using Elf_Sym_Range = typename ELFO::Elf_Sym_Range; \ 95 using Elf_Versym = typename ELFO::Elf_Versym; \ 96 using Elf_Verneed = typename ELFO::Elf_Verneed; \ 97 using Elf_Vernaux = typename ELFO::Elf_Vernaux; \ 98 using Elf_Verdef = typename ELFO::Elf_Verdef; \ 99 using Elf_Verdaux = typename ELFO::Elf_Verdaux; \ 100 using uintX_t = typename ELFO::uintX_t; 101 102 namespace { 103 104 template <class ELFT> class DumpStyle; 105 106 /// Represents a contiguous uniform range in the file. We cannot just create a 107 /// range directly because when creating one of these from the .dynamic table 108 /// the size, entity size and virtual address are different entries in arbitrary 109 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 110 struct DynRegionInfo { 111 DynRegionInfo() = default; 112 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 113 : Addr(A), Size(S), EntSize(ES) {} 114 115 /// \brief Address in current address space. 116 const void *Addr = nullptr; 117 /// \brief Size in bytes of the region. 118 uint64_t Size = 0; 119 /// \brief Size of each entity in the region. 120 uint64_t EntSize = 0; 121 122 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 123 const Type *Start = reinterpret_cast<const Type *>(Addr); 124 if (!Start) 125 return {Start, Start}; 126 if (EntSize != sizeof(Type) || Size % EntSize) 127 reportError("Invalid entity size"); 128 return {Start, Start + (Size / EntSize)}; 129 } 130 }; 131 132 template<typename ELFT> 133 class ELFDumper : public ObjDumper { 134 public: 135 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 136 137 void printFileHeaders() override; 138 void printSections() override; 139 void printRelocations() override; 140 void printDynamicRelocations() override; 141 void printSymbols() override; 142 void printDynamicSymbols() override; 143 void printUnwindInfo() override; 144 145 void printDynamicTable() override; 146 void printNeededLibraries() override; 147 void printProgramHeaders() override; 148 void printHashTable() override; 149 void printGnuHashTable() override; 150 void printLoadName() override; 151 void printVersionInfo() override; 152 void printGroupSections() override; 153 154 void printAttributes() override; 155 void printMipsPLTGOT() override; 156 void printMipsABIFlags() override; 157 void printMipsReginfo() override; 158 void printMipsOptions() override; 159 160 void printStackMap() const override; 161 162 void printHashHistogram() override; 163 164 void printNotes() override; 165 166 private: 167 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 168 169 TYPEDEF_ELF_TYPES(ELFT) 170 171 DynRegionInfo checkDRI(DynRegionInfo DRI) { 172 if (DRI.Addr < Obj->base() || 173 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 174 error(llvm::object::object_error::parse_failed); 175 return DRI; 176 } 177 178 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 179 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 180 } 181 182 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 183 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 184 } 185 186 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 187 188 void printValue(uint64_t Type, uint64_t Value); 189 190 StringRef getDynamicString(uint64_t Offset) const; 191 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 192 bool &IsDefault) const; 193 void LoadVersionMap() const; 194 void LoadVersionNeeds(const Elf_Shdr *ec) const; 195 void LoadVersionDefs(const Elf_Shdr *sec) const; 196 197 const ELFO *Obj; 198 DynRegionInfo DynRelRegion; 199 DynRegionInfo DynRelaRegion; 200 DynRegionInfo DynPLTRelRegion; 201 DynRegionInfo DynSymRegion; 202 DynRegionInfo DynamicTable; 203 StringRef DynamicStringTable; 204 StringRef SOName; 205 const Elf_Hash *HashTable = nullptr; 206 const Elf_GnuHash *GnuHashTable = nullptr; 207 const Elf_Shdr *DotSymtabSec = nullptr; 208 StringRef DynSymtabName; 209 ArrayRef<Elf_Word> ShndxTable; 210 211 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 212 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 213 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 214 215 // Records for each version index the corresponding Verdef or Vernaux entry. 216 // This is filled the first time LoadVersionMap() is called. 217 class VersionMapEntry : public PointerIntPair<const void *, 1> { 218 public: 219 // If the integer is 0, this is an Elf_Verdef*. 220 // If the integer is 1, this is an Elf_Vernaux*. 221 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 222 VersionMapEntry(const Elf_Verdef *verdef) 223 : PointerIntPair<const void *, 1>(verdef, 0) {} 224 VersionMapEntry(const Elf_Vernaux *vernaux) 225 : PointerIntPair<const void *, 1>(vernaux, 1) {} 226 227 bool isNull() const { return getPointer() == nullptr; } 228 bool isVerdef() const { return !isNull() && getInt() == 0; } 229 bool isVernaux() const { return !isNull() && getInt() == 1; } 230 const Elf_Verdef *getVerdef() const { 231 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 232 } 233 const Elf_Vernaux *getVernaux() const { 234 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 235 } 236 }; 237 mutable SmallVector<VersionMapEntry, 16> VersionMap; 238 239 public: 240 Elf_Dyn_Range dynamic_table() const { 241 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 242 } 243 244 Elf_Sym_Range dynamic_symbols() const { 245 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 246 } 247 248 Elf_Rel_Range dyn_rels() const; 249 Elf_Rela_Range dyn_relas() const; 250 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 251 bool IsDynamic) const; 252 253 void printSymbolsHelper(bool IsDynamic) const; 254 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 255 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 256 StringRef getDynamicStringTable() const { return DynamicStringTable; } 257 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 258 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 259 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 260 const Elf_Hash *getHashTable() const { return HashTable; } 261 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 262 }; 263 264 template <class ELFT> 265 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 266 StringRef StrTable, SymtabName; 267 size_t Entries = 0; 268 Elf_Sym_Range Syms(nullptr, nullptr); 269 if (IsDynamic) { 270 StrTable = DynamicStringTable; 271 Syms = dynamic_symbols(); 272 SymtabName = DynSymtabName; 273 if (DynSymRegion.Addr) 274 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 275 } else { 276 if (!DotSymtabSec) 277 return; 278 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 279 Syms = unwrapOrError(Obj->symbols(DotSymtabSec)); 280 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 281 Entries = DotSymtabSec->getEntityCount(); 282 } 283 if (Syms.begin() == Syms.end()) 284 return; 285 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 286 for (const auto &Sym : Syms) 287 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 288 } 289 290 template <typename ELFT> class DumpStyle { 291 public: 292 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 293 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 294 295 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 296 virtual ~DumpStyle() = default; 297 298 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 299 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 300 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 301 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 302 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 303 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 304 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 305 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 306 size_t Offset) {} 307 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 308 const Elf_Sym *FirstSym, StringRef StrTable, 309 bool IsDynamic) = 0; 310 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 311 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 312 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0; 313 const ELFDumper<ELFT> *dumper() const { return Dumper; } 314 315 private: 316 const ELFDumper<ELFT> *Dumper; 317 }; 318 319 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 320 formatted_raw_ostream OS; 321 322 public: 323 TYPEDEF_ELF_TYPES(ELFT) 324 325 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 326 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 327 328 void printFileHeaders(const ELFO *Obj) override; 329 void printGroupSections(const ELFFile<ELFT> *Obj) override; 330 void printRelocations(const ELFO *Obj) override; 331 void printSections(const ELFO *Obj) override; 332 void printSymbols(const ELFO *Obj) override; 333 void printDynamicSymbols(const ELFO *Obj) override; 334 void printDynamicRelocations(const ELFO *Obj) override; 335 void printSymtabMessage(const ELFO *Obj, StringRef Name, 336 size_t Offset) override; 337 void printProgramHeaders(const ELFO *Obj) override; 338 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 339 void printNotes(const ELFFile<ELFT> *Obj) override; 340 341 private: 342 struct Field { 343 StringRef Str; 344 unsigned Column; 345 346 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 347 Field(unsigned Col) : Str(""), Column(Col) {} 348 }; 349 350 template <typename T, typename TEnum> 351 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 352 for (const auto &EnumItem : EnumValues) 353 if (EnumItem.Value == Value) 354 return EnumItem.AltName; 355 return to_hexString(Value, false); 356 } 357 358 formatted_raw_ostream &printField(struct Field F) { 359 if (F.Column != 0) 360 OS.PadToColumn(F.Column); 361 OS << F.Str; 362 OS.flush(); 363 return OS; 364 } 365 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym, 366 StringRef StrTable, uint32_t Bucket); 367 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 368 const Elf_Rela &R, bool IsRela); 369 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 370 StringRef StrTable, bool IsDynamic) override; 371 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 372 const Elf_Sym *FirstSym); 373 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 374 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 375 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 376 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 377 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 378 }; 379 380 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 381 public: 382 TYPEDEF_ELF_TYPES(ELFT) 383 384 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 385 : DumpStyle<ELFT>(Dumper), W(W) {} 386 387 void printFileHeaders(const ELFO *Obj) override; 388 void printGroupSections(const ELFFile<ELFT> *Obj) override; 389 void printRelocations(const ELFO *Obj) override; 390 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 391 void printSections(const ELFO *Obj) override; 392 void printSymbols(const ELFO *Obj) override; 393 void printDynamicSymbols(const ELFO *Obj) override; 394 void printDynamicRelocations(const ELFO *Obj) override; 395 void printProgramHeaders(const ELFO *Obj) override; 396 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 397 void printNotes(const ELFFile<ELFT> *Obj) override; 398 399 private: 400 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 401 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 402 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 403 StringRef StrTable, bool IsDynamic) override; 404 405 ScopedPrinter &W; 406 }; 407 408 } // end anonymous namespace 409 410 namespace llvm { 411 412 template <class ELFT> 413 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 414 ScopedPrinter &Writer, 415 std::unique_ptr<ObjDumper> &Result) { 416 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 417 return readobj_error::success; 418 } 419 420 std::error_code createELFDumper(const object::ObjectFile *Obj, 421 ScopedPrinter &Writer, 422 std::unique_ptr<ObjDumper> &Result) { 423 // Little-endian 32-bit 424 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 425 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 426 427 // Big-endian 32-bit 428 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 429 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 430 431 // Little-endian 64-bit 432 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 433 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 434 435 // Big-endian 64-bit 436 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 437 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 438 439 return readobj_error::unsupported_obj_file_format; 440 } 441 442 } // end namespace llvm 443 444 // Iterate through the versions needed section, and place each Elf_Vernaux 445 // in the VersionMap according to its index. 446 template <class ELFT> 447 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 448 unsigned vn_size = sec->sh_size; // Size of section in bytes 449 unsigned vn_count = sec->sh_info; // Number of Verneed entries 450 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 451 const char *sec_end = sec_start + vn_size; 452 // The first Verneed entry is at the start of the section. 453 const char *p = sec_start; 454 for (unsigned i = 0; i < vn_count; i++) { 455 if (p + sizeof(Elf_Verneed) > sec_end) 456 report_fatal_error("Section ended unexpectedly while scanning " 457 "version needed records."); 458 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 459 if (vn->vn_version != ELF::VER_NEED_CURRENT) 460 report_fatal_error("Unexpected verneed version"); 461 // Iterate through the Vernaux entries 462 const char *paux = p + vn->vn_aux; 463 for (unsigned j = 0; j < vn->vn_cnt; j++) { 464 if (paux + sizeof(Elf_Vernaux) > sec_end) 465 report_fatal_error("Section ended unexpected while scanning auxiliary " 466 "version needed records."); 467 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 468 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 469 if (index >= VersionMap.size()) 470 VersionMap.resize(index + 1); 471 VersionMap[index] = VersionMapEntry(vna); 472 paux += vna->vna_next; 473 } 474 p += vn->vn_next; 475 } 476 } 477 478 // Iterate through the version definitions, and place each Elf_Verdef 479 // in the VersionMap according to its index. 480 template <class ELFT> 481 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 482 unsigned vd_size = sec->sh_size; // Size of section in bytes 483 unsigned vd_count = sec->sh_info; // Number of Verdef entries 484 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 485 const char *sec_end = sec_start + vd_size; 486 // The first Verdef entry is at the start of the section. 487 const char *p = sec_start; 488 for (unsigned i = 0; i < vd_count; i++) { 489 if (p + sizeof(Elf_Verdef) > sec_end) 490 report_fatal_error("Section ended unexpectedly while scanning " 491 "version definitions."); 492 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 493 if (vd->vd_version != ELF::VER_DEF_CURRENT) 494 report_fatal_error("Unexpected verdef version"); 495 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 496 if (index >= VersionMap.size()) 497 VersionMap.resize(index + 1); 498 VersionMap[index] = VersionMapEntry(vd); 499 p += vd->vd_next; 500 } 501 } 502 503 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 504 // If there is no dynamic symtab or version table, there is nothing to do. 505 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 506 return; 507 508 // Has the VersionMap already been loaded? 509 if (VersionMap.size() > 0) 510 return; 511 512 // The first two version indexes are reserved. 513 // Index 0 is LOCAL, index 1 is GLOBAL. 514 VersionMap.push_back(VersionMapEntry()); 515 VersionMap.push_back(VersionMapEntry()); 516 517 if (dot_gnu_version_d_sec) 518 LoadVersionDefs(dot_gnu_version_d_sec); 519 520 if (dot_gnu_version_r_sec) 521 LoadVersionNeeds(dot_gnu_version_r_sec); 522 } 523 524 template <typename ELFO, class ELFT> 525 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 526 const typename ELFO::Elf_Shdr *Sec, 527 ScopedPrinter &W) { 528 DictScope SS(W, "Version symbols"); 529 if (!Sec) 530 return; 531 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 532 W.printNumber("Section Name", Name, Sec->sh_name); 533 W.printHex("Address", Sec->sh_addr); 534 W.printHex("Offset", Sec->sh_offset); 535 W.printNumber("Link", Sec->sh_link); 536 537 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 538 StringRef StrTable = Dumper->getDynamicStringTable(); 539 540 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 541 ListScope Syms(W, "Symbols"); 542 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 543 DictScope S(W, "Symbol"); 544 std::string FullSymbolName = 545 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 546 W.printNumber("Version", *P); 547 W.printString("Name", FullSymbolName); 548 P += sizeof(typename ELFO::Elf_Half); 549 } 550 } 551 552 static const EnumEntry<unsigned> SymVersionFlags[] = { 553 {"Base", "BASE", VER_FLG_BASE}, 554 {"Weak", "WEAK", VER_FLG_WEAK}, 555 {"Info", "INFO", VER_FLG_INFO}}; 556 557 template <typename ELFO, class ELFT> 558 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 559 const ELFO *Obj, 560 const typename ELFO::Elf_Shdr *Sec, 561 ScopedPrinter &W) { 562 using VerDef = typename ELFO::Elf_Verdef; 563 using VerdAux = typename ELFO::Elf_Verdaux; 564 565 DictScope SD(W, "SHT_GNU_verdef"); 566 if (!Sec) 567 return; 568 569 // The number of entries in the section SHT_GNU_verdef 570 // is determined by DT_VERDEFNUM tag. 571 unsigned VerDefsNum = 0; 572 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 573 if (Dyn.d_tag == DT_VERDEFNUM) 574 VerDefsNum = Dyn.d_un.d_val; 575 } 576 const uint8_t *SecStartAddress = 577 (const uint8_t *)Obj->base() + Sec->sh_offset; 578 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 579 const uint8_t *P = SecStartAddress; 580 const typename ELFO::Elf_Shdr *StrTab = 581 unwrapOrError(Obj->getSection(Sec->sh_link)); 582 583 while (VerDefsNum--) { 584 if (P + sizeof(VerDef) > SecEndAddress) 585 report_fatal_error("invalid offset in the section"); 586 587 auto *VD = reinterpret_cast<const VerDef *>(P); 588 DictScope Def(W, "Definition"); 589 W.printNumber("Version", VD->vd_version); 590 W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags)); 591 W.printNumber("Index", VD->vd_ndx); 592 W.printNumber("Hash", VD->vd_hash); 593 W.printString("Name", 594 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 595 VD->getAux()->vda_name))); 596 if (!VD->vd_cnt) 597 report_fatal_error("at least one definition string must exist"); 598 if (VD->vd_cnt > 2) 599 report_fatal_error("more than one predecessor is not expected"); 600 601 if (VD->vd_cnt == 2) { 602 const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next; 603 const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux); 604 W.printString("Predecessor", 605 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 606 Aux->vda_name))); 607 } 608 609 P += VD->vd_next; 610 } 611 } 612 613 template <typename ELFO, class ELFT> 614 static void printVersionDependencySection(ELFDumper<ELFT> *Dumper, 615 const ELFO *Obj, 616 const typename ELFO::Elf_Shdr *Sec, 617 ScopedPrinter &W) { 618 using VerNeed = typename ELFO::Elf_Verneed; 619 using VernAux = typename ELFO::Elf_Vernaux; 620 621 DictScope SD(W, "SHT_GNU_verneed"); 622 if (!Sec) 623 return; 624 625 unsigned VerNeedNum = 0; 626 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) 627 if (Dyn.d_tag == DT_VERNEEDNUM) 628 VerNeedNum = Dyn.d_un.d_val; 629 630 const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset; 631 const typename ELFO::Elf_Shdr *StrTab = 632 unwrapOrError(Obj->getSection(Sec->sh_link)); 633 634 const uint8_t *P = SecData; 635 for (unsigned I = 0; I < VerNeedNum; ++I) { 636 const VerNeed *Need = reinterpret_cast<const VerNeed *>(P); 637 DictScope Entry(W, "Dependency"); 638 W.printNumber("Version", Need->vn_version); 639 W.printNumber("Count", Need->vn_cnt); 640 W.printString("FileName", 641 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 642 Need->vn_file))); 643 644 const uint8_t *PAux = P + Need->vn_aux; 645 for (unsigned J = 0; J < Need->vn_cnt; ++J) { 646 const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux); 647 DictScope Entry(W, "Entry"); 648 W.printNumber("Hash", Aux->vna_hash); 649 W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags)); 650 W.printNumber("Index", Aux->vna_other); 651 W.printString("Name", 652 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 653 Aux->vna_name))); 654 PAux += Aux->vna_next; 655 } 656 P += Need->vn_next; 657 } 658 } 659 660 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 661 // Dump version symbol section. 662 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 663 664 // Dump version definition section. 665 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 666 667 // Dump version dependency section. 668 printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W); 669 } 670 671 template <typename ELFT> 672 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 673 const Elf_Sym *symb, 674 bool &IsDefault) const { 675 // This is a dynamic symbol. Look in the GNU symbol version table. 676 if (!dot_gnu_version_sec) { 677 // No version table. 678 IsDefault = false; 679 return StringRef(""); 680 } 681 682 // Determine the position in the symbol table of this entry. 683 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 684 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 685 sizeof(Elf_Sym); 686 687 // Get the corresponding version index entry 688 const Elf_Versym *vs = unwrapOrError( 689 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index)); 690 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 691 692 // Special markers for unversioned symbols. 693 if (version_index == ELF::VER_NDX_LOCAL || 694 version_index == ELF::VER_NDX_GLOBAL) { 695 IsDefault = false; 696 return StringRef(""); 697 } 698 699 // Lookup this symbol in the version table 700 LoadVersionMap(); 701 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 702 reportError("Invalid version entry"); 703 const VersionMapEntry &entry = VersionMap[version_index]; 704 705 // Get the version name string 706 size_t name_offset; 707 if (entry.isVerdef()) { 708 // The first Verdaux entry holds the name. 709 name_offset = entry.getVerdef()->getAux()->vda_name; 710 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 711 } else { 712 name_offset = entry.getVernaux()->vna_name; 713 IsDefault = false; 714 } 715 if (name_offset >= StrTab.size()) 716 reportError("Invalid string offset"); 717 return StringRef(StrTab.data() + name_offset); 718 } 719 720 template <typename ELFT> 721 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 722 StringRef StrTable, 723 bool IsDynamic) const { 724 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 725 if (!IsDynamic) 726 return SymbolName; 727 728 std::string FullSymbolName(SymbolName); 729 730 bool IsDefault; 731 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 732 FullSymbolName += (IsDefault ? "@@" : "@"); 733 FullSymbolName += Version; 734 return FullSymbolName; 735 } 736 737 template <typename ELFT> 738 static void 739 getSectionNameIndex(const ELFFile<ELFT> &Obj, const typename ELFT::Sym *Symbol, 740 const typename ELFT::Sym *FirstSym, 741 ArrayRef<typename ELFT::Word> ShndxTable, 742 StringRef &SectionName, unsigned &SectionIndex) { 743 SectionIndex = Symbol->st_shndx; 744 if (Symbol->isUndefined()) 745 SectionName = "Undefined"; 746 else if (Symbol->isProcessorSpecific()) 747 SectionName = "Processor Specific"; 748 else if (Symbol->isOSSpecific()) 749 SectionName = "Operating System Specific"; 750 else if (Symbol->isAbsolute()) 751 SectionName = "Absolute"; 752 else if (Symbol->isCommon()) 753 SectionName = "Common"; 754 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 755 SectionName = "Reserved"; 756 else { 757 if (SectionIndex == SHN_XINDEX) 758 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 759 Symbol, FirstSym, ShndxTable)); 760 const typename ELFT::Shdr *Sec = 761 unwrapOrError(Obj.getSection(SectionIndex)); 762 SectionName = unwrapOrError(Obj.getSectionName(Sec)); 763 } 764 } 765 766 template <class ELFO> 767 static const typename ELFO::Elf_Shdr * 768 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 769 for (const auto &Shdr : unwrapOrError(Obj->sections())) 770 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 771 return &Shdr; 772 return nullptr; 773 } 774 775 template <class ELFO> 776 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 777 StringRef Name) { 778 for (const auto &Shdr : unwrapOrError(Obj.sections())) { 779 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 780 return &Shdr; 781 } 782 return nullptr; 783 } 784 785 static const EnumEntry<unsigned> ElfClass[] = { 786 {"None", "none", ELF::ELFCLASSNONE}, 787 {"32-bit", "ELF32", ELF::ELFCLASS32}, 788 {"64-bit", "ELF64", ELF::ELFCLASS64}, 789 }; 790 791 static const EnumEntry<unsigned> ElfDataEncoding[] = { 792 {"None", "none", ELF::ELFDATANONE}, 793 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 794 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 795 }; 796 797 static const EnumEntry<unsigned> ElfObjectFileType[] = { 798 {"None", "NONE (none)", ELF::ET_NONE}, 799 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 800 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 801 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 802 {"Core", "CORE (Core file)", ELF::ET_CORE}, 803 }; 804 805 static const EnumEntry<unsigned> ElfOSABI[] = { 806 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 807 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 808 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 809 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 810 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 811 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 812 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 813 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 814 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 815 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 816 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 817 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 818 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 819 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 820 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 821 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 822 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 823 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 824 }; 825 826 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 827 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 828 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 829 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 830 }; 831 832 static const EnumEntry<unsigned> ARMElfOSABI[] = { 833 {"ARM", "ARM", ELF::ELFOSABI_ARM} 834 }; 835 836 static const EnumEntry<unsigned> C6000ElfOSABI[] = { 837 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 838 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 839 }; 840 841 static const EnumEntry<unsigned> ElfMachineType[] = { 842 ENUM_ENT(EM_NONE, "None"), 843 ENUM_ENT(EM_M32, "WE32100"), 844 ENUM_ENT(EM_SPARC, "Sparc"), 845 ENUM_ENT(EM_386, "Intel 80386"), 846 ENUM_ENT(EM_68K, "MC68000"), 847 ENUM_ENT(EM_88K, "MC88000"), 848 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 849 ENUM_ENT(EM_860, "Intel 80860"), 850 ENUM_ENT(EM_MIPS, "MIPS R3000"), 851 ENUM_ENT(EM_S370, "IBM System/370"), 852 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 853 ENUM_ENT(EM_PARISC, "HPPA"), 854 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 855 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 856 ENUM_ENT(EM_960, "Intel 80960"), 857 ENUM_ENT(EM_PPC, "PowerPC"), 858 ENUM_ENT(EM_PPC64, "PowerPC64"), 859 ENUM_ENT(EM_S390, "IBM S/390"), 860 ENUM_ENT(EM_SPU, "SPU"), 861 ENUM_ENT(EM_V800, "NEC V800 series"), 862 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 863 ENUM_ENT(EM_RH32, "TRW RH-32"), 864 ENUM_ENT(EM_RCE, "Motorola RCE"), 865 ENUM_ENT(EM_ARM, "ARM"), 866 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 867 ENUM_ENT(EM_SH, "Hitachi SH"), 868 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 869 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 870 ENUM_ENT(EM_ARC, "ARC"), 871 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 872 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 873 ENUM_ENT(EM_H8S, "Hitachi H8S"), 874 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 875 ENUM_ENT(EM_IA_64, "Intel IA-64"), 876 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 877 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 878 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 879 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 880 ENUM_ENT(EM_PCP, "Siemens PCP"), 881 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 882 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 883 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 884 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 885 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 886 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 887 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 888 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 889 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 890 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 891 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 892 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 893 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 894 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 895 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 896 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 897 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 898 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 899 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 900 ENUM_ENT(EM_VAX, "Digital VAX"), 901 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 902 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 903 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 904 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 905 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 906 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 907 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 908 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 909 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 910 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 911 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 912 ENUM_ENT(EM_V850, "NEC v850"), 913 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 914 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 915 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 916 ENUM_ENT(EM_PJ, "picoJava"), 917 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 918 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 919 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 920 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 921 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 922 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 923 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 924 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 925 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 926 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 927 ENUM_ENT(EM_MAX, "MAX Processor"), 928 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 929 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 930 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 931 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 932 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 933 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 934 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 935 ENUM_ENT(EM_UNICORE, "Unicore"), 936 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 937 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 938 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 939 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 940 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 941 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 942 ENUM_ENT(EM_M16C, "Renesas M16C"), 943 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 944 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 945 ENUM_ENT(EM_M32C, "Renesas M32C"), 946 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 947 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 948 ENUM_ENT(EM_SHARC, "EM_SHARC"), 949 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 950 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 951 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 952 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 953 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 954 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 955 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 956 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 957 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 958 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 959 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 960 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 961 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 962 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 963 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 964 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 965 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 966 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 967 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 968 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 969 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 970 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 971 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 972 ENUM_ENT(EM_RX, "Renesas RX"), 973 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 974 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 975 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 976 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 977 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 978 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 979 ENUM_ENT(EM_L10M, "EM_L10M"), 980 ENUM_ENT(EM_K10M, "EM_K10M"), 981 ENUM_ENT(EM_AARCH64, "AArch64"), 982 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 983 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 984 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 985 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 986 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 987 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 988 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 989 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 990 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 991 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 992 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 993 ENUM_ENT(EM_RL78, "Renesas RL78"), 994 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 995 ENUM_ENT(EM_78KOR, "EM_78KOR"), 996 ENUM_ENT(EM_56800EX, "EM_56800EX"), 997 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 998 ENUM_ENT(EM_RISCV, "RISC-V"), 999 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 1000 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1001 ENUM_ENT(EM_BPF, "EM_BPF"), 1002 }; 1003 1004 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 1005 {"Local", "LOCAL", ELF::STB_LOCAL}, 1006 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1007 {"Weak", "WEAK", ELF::STB_WEAK}, 1008 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1009 1010 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1011 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1012 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1013 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1014 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1015 1016 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 1017 {"None", "NOTYPE", ELF::STT_NOTYPE}, 1018 {"Object", "OBJECT", ELF::STT_OBJECT}, 1019 {"Function", "FUNC", ELF::STT_FUNC}, 1020 {"Section", "SECTION", ELF::STT_SECTION}, 1021 {"File", "FILE", ELF::STT_FILE}, 1022 {"Common", "COMMON", ELF::STT_COMMON}, 1023 {"TLS", "TLS", ELF::STT_TLS}, 1024 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 1025 1026 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1027 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1028 }; 1029 1030 static const char *getGroupType(uint32_t Flag) { 1031 if (Flag & ELF::GRP_COMDAT) 1032 return "COMDAT"; 1033 else 1034 return "(unknown)"; 1035 } 1036 1037 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1038 ENUM_ENT(SHF_WRITE, "W"), 1039 ENUM_ENT(SHF_ALLOC, "A"), 1040 ENUM_ENT(SHF_EXCLUDE, "E"), 1041 ENUM_ENT(SHF_EXECINSTR, "X"), 1042 ENUM_ENT(SHF_MERGE, "M"), 1043 ENUM_ENT(SHF_STRINGS, "S"), 1044 ENUM_ENT(SHF_INFO_LINK, "I"), 1045 ENUM_ENT(SHF_LINK_ORDER, "L"), 1046 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 1047 ENUM_ENT(SHF_GROUP, "G"), 1048 ENUM_ENT(SHF_TLS, "T"), 1049 ENUM_ENT(SHF_MASKOS, "o"), 1050 ENUM_ENT(SHF_MASKPROC, "p"), 1051 ENUM_ENT_1(SHF_COMPRESSED), 1052 }; 1053 1054 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1055 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1056 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1057 }; 1058 1059 static const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1060 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE) 1061 }; 1062 1063 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1064 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1065 }; 1066 1067 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1068 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1069 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1070 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1071 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1072 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1073 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1074 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1075 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1076 }; 1077 1078 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1079 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1080 }; 1081 1082 static std::string getGNUFlags(uint64_t Flags) { 1083 std::string Str; 1084 for (auto Entry : ElfSectionFlags) { 1085 uint64_t Flag = Entry.Value & Flags; 1086 Flags &= ~Entry.Value; 1087 switch (Flag) { 1088 case ELF::SHF_WRITE: 1089 case ELF::SHF_ALLOC: 1090 case ELF::SHF_EXECINSTR: 1091 case ELF::SHF_MERGE: 1092 case ELF::SHF_STRINGS: 1093 case ELF::SHF_INFO_LINK: 1094 case ELF::SHF_LINK_ORDER: 1095 case ELF::SHF_OS_NONCONFORMING: 1096 case ELF::SHF_GROUP: 1097 case ELF::SHF_TLS: 1098 case ELF::SHF_EXCLUDE: 1099 Str += Entry.AltName; 1100 break; 1101 default: 1102 if (Flag & ELF::SHF_MASKOS) 1103 Str += "o"; 1104 else if (Flag & ELF::SHF_MASKPROC) 1105 Str += "p"; 1106 else if (Flag) 1107 Str += "x"; 1108 } 1109 } 1110 return Str; 1111 } 1112 1113 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1114 // Check potentially overlapped processor-specific 1115 // program header type. 1116 switch (Arch) { 1117 case ELF::EM_ARM: 1118 switch (Type) { 1119 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1120 } 1121 case ELF::EM_MIPS: 1122 case ELF::EM_MIPS_RS3_LE: 1123 switch (Type) { 1124 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1125 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1126 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1127 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1128 } 1129 } 1130 1131 switch (Type) { 1132 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1133 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1134 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1135 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1136 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1137 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1138 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1139 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1140 1141 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1142 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1143 1144 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1145 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1146 1147 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1148 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1149 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1150 1151 default: return ""; 1152 } 1153 } 1154 1155 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1156 switch (Type) { 1157 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1158 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1159 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1160 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1161 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1162 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1163 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1164 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1165 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1166 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1167 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1168 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1169 default: 1170 // All machine specific PT_* types 1171 switch (Arch) { 1172 case ELF::EM_ARM: 1173 if (Type == ELF::PT_ARM_EXIDX) 1174 return "EXIDX"; 1175 return ""; 1176 case ELF::EM_MIPS: 1177 case ELF::EM_MIPS_RS3_LE: 1178 switch (Type) { 1179 case PT_MIPS_REGINFO: 1180 return "REGINFO"; 1181 case PT_MIPS_RTPROC: 1182 return "RTPROC"; 1183 case PT_MIPS_OPTIONS: 1184 return "OPTIONS"; 1185 case PT_MIPS_ABIFLAGS: 1186 return "ABIFLAGS"; 1187 } 1188 return ""; 1189 } 1190 } 1191 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1192 } 1193 1194 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1195 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1196 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1197 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1198 }; 1199 1200 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1201 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1202 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1203 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1204 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1205 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1206 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1207 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1208 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1209 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1210 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1211 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1212 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1213 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1214 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1215 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1216 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1217 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1218 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1219 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1220 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1221 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1222 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1223 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1224 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1225 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1226 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1227 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1228 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1229 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1230 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1231 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1232 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1233 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1234 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1235 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1236 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1237 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1238 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1239 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1240 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1241 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1242 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1243 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1244 }; 1245 1246 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { 1247 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_NONE), 1248 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_R600), 1249 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_ARCH_GCN) 1250 }; 1251 1252 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1253 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVC), 1254 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_SINGLE), 1255 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_DOUBLE), 1256 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_QUAD), 1257 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVE) 1258 }; 1259 1260 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1261 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1262 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1263 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1264 }; 1265 1266 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1267 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1268 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1269 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1270 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1271 }; 1272 1273 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1274 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1275 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1276 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1277 }; 1278 1279 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1280 switch (Odk) { 1281 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1282 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1283 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1284 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1285 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1286 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1287 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1288 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1289 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1290 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1291 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1292 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1293 default: 1294 return "Unknown"; 1295 } 1296 } 1297 1298 template <typename ELFT> 1299 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1300 : ObjDumper(Writer), Obj(Obj) { 1301 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1302 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 1303 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1304 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1305 continue; 1306 } 1307 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1308 continue; 1309 LoadSegments.push_back(&Phdr); 1310 } 1311 1312 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1313 switch (Sec.sh_type) { 1314 case ELF::SHT_SYMTAB: 1315 if (DotSymtabSec != nullptr) 1316 reportError("Multiple SHT_SYMTAB"); 1317 DotSymtabSec = &Sec; 1318 break; 1319 case ELF::SHT_DYNSYM: 1320 if (DynSymRegion.Size) 1321 reportError("Multiple SHT_DYNSYM"); 1322 DynSymRegion = createDRIFrom(&Sec); 1323 // This is only used (if Elf_Shdr present)for naming section in GNU style 1324 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1325 DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec)); 1326 break; 1327 case ELF::SHT_SYMTAB_SHNDX: 1328 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1329 break; 1330 case ELF::SHT_GNU_versym: 1331 if (dot_gnu_version_sec != nullptr) 1332 reportError("Multiple SHT_GNU_versym"); 1333 dot_gnu_version_sec = &Sec; 1334 break; 1335 case ELF::SHT_GNU_verdef: 1336 if (dot_gnu_version_d_sec != nullptr) 1337 reportError("Multiple SHT_GNU_verdef"); 1338 dot_gnu_version_d_sec = &Sec; 1339 break; 1340 case ELF::SHT_GNU_verneed: 1341 if (dot_gnu_version_r_sec != nullptr) 1342 reportError("Multiple SHT_GNU_verneed"); 1343 dot_gnu_version_r_sec = &Sec; 1344 break; 1345 } 1346 } 1347 1348 parseDynamicTable(LoadSegments); 1349 1350 if (opts::Output == opts::GNU) 1351 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1352 else 1353 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1354 } 1355 1356 template <typename ELFT> 1357 void ELFDumper<ELFT>::parseDynamicTable( 1358 ArrayRef<const Elf_Phdr *> LoadSegments) { 1359 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1360 const Elf_Phdr *const *I = 1361 std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr, 1362 [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) { 1363 return VAddr < Phdr->p_vaddr; 1364 }); 1365 if (I == LoadSegments.begin()) 1366 report_fatal_error("Virtual address is not in any segment"); 1367 --I; 1368 const Elf_Phdr &Phdr = **I; 1369 uint64_t Delta = VAddr - Phdr.p_vaddr; 1370 if (Delta >= Phdr.p_filesz) 1371 report_fatal_error("Virtual address is not in any segment"); 1372 return Obj->base() + Phdr.p_offset + Delta; 1373 }; 1374 1375 uint64_t SONameOffset = 0; 1376 const char *StringTableBegin = nullptr; 1377 uint64_t StringTableSize = 0; 1378 for (const Elf_Dyn &Dyn : dynamic_table()) { 1379 switch (Dyn.d_tag) { 1380 case ELF::DT_HASH: 1381 HashTable = 1382 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1383 break; 1384 case ELF::DT_GNU_HASH: 1385 GnuHashTable = 1386 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1387 break; 1388 case ELF::DT_STRTAB: 1389 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1390 break; 1391 case ELF::DT_STRSZ: 1392 StringTableSize = Dyn.getVal(); 1393 break; 1394 case ELF::DT_SYMTAB: 1395 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1396 DynSymRegion.EntSize = sizeof(Elf_Sym); 1397 break; 1398 case ELF::DT_RELA: 1399 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1400 break; 1401 case ELF::DT_RELASZ: 1402 DynRelaRegion.Size = Dyn.getVal(); 1403 break; 1404 case ELF::DT_RELAENT: 1405 DynRelaRegion.EntSize = Dyn.getVal(); 1406 break; 1407 case ELF::DT_SONAME: 1408 SONameOffset = Dyn.getVal(); 1409 break; 1410 case ELF::DT_REL: 1411 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1412 break; 1413 case ELF::DT_RELSZ: 1414 DynRelRegion.Size = Dyn.getVal(); 1415 break; 1416 case ELF::DT_RELENT: 1417 DynRelRegion.EntSize = Dyn.getVal(); 1418 break; 1419 case ELF::DT_PLTREL: 1420 if (Dyn.getVal() == DT_REL) 1421 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1422 else if (Dyn.getVal() == DT_RELA) 1423 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1424 else 1425 reportError(Twine("unknown DT_PLTREL value of ") + 1426 Twine((uint64_t)Dyn.getVal())); 1427 break; 1428 case ELF::DT_JMPREL: 1429 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1430 break; 1431 case ELF::DT_PLTRELSZ: 1432 DynPLTRelRegion.Size = Dyn.getVal(); 1433 break; 1434 } 1435 } 1436 if (StringTableBegin) 1437 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1438 if (SONameOffset) 1439 SOName = getDynamicString(SONameOffset); 1440 } 1441 1442 template <typename ELFT> 1443 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1444 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1445 } 1446 1447 template <typename ELFT> 1448 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1449 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1450 } 1451 1452 template<class ELFT> 1453 void ELFDumper<ELFT>::printFileHeaders() { 1454 ELFDumperStyle->printFileHeaders(Obj); 1455 } 1456 1457 template<class ELFT> 1458 void ELFDumper<ELFT>::printSections() { 1459 ELFDumperStyle->printSections(Obj); 1460 } 1461 1462 template<class ELFT> 1463 void ELFDumper<ELFT>::printRelocations() { 1464 ELFDumperStyle->printRelocations(Obj); 1465 } 1466 1467 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1468 ELFDumperStyle->printProgramHeaders(Obj); 1469 } 1470 1471 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1472 ELFDumperStyle->printDynamicRelocations(Obj); 1473 } 1474 1475 template<class ELFT> 1476 void ELFDumper<ELFT>::printSymbols() { 1477 ELFDumperStyle->printSymbols(Obj); 1478 } 1479 1480 template<class ELFT> 1481 void ELFDumper<ELFT>::printDynamicSymbols() { 1482 ELFDumperStyle->printDynamicSymbols(Obj); 1483 } 1484 1485 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1486 ELFDumperStyle->printHashHistogram(Obj); 1487 } 1488 1489 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 1490 ELFDumperStyle->printNotes(Obj); 1491 } 1492 1493 #define LLVM_READOBJ_TYPE_CASE(name) \ 1494 case DT_##name: return #name 1495 1496 static const char *getTypeString(unsigned Arch, uint64_t Type) { 1497 switch (Arch) { 1498 case EM_HEXAGON: 1499 switch (Type) { 1500 LLVM_READOBJ_TYPE_CASE(HEXAGON_SYMSZ); 1501 LLVM_READOBJ_TYPE_CASE(HEXAGON_VER); 1502 LLVM_READOBJ_TYPE_CASE(HEXAGON_PLT); 1503 } 1504 case EM_MIPS: 1505 switch (Type) { 1506 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1507 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1508 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1509 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1510 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1511 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1512 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1513 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1514 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1515 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1516 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1517 } 1518 } 1519 switch (Type) { 1520 LLVM_READOBJ_TYPE_CASE(ANDROID_REL); 1521 LLVM_READOBJ_TYPE_CASE(ANDROID_RELSZ); 1522 LLVM_READOBJ_TYPE_CASE(ANDROID_RELA); 1523 LLVM_READOBJ_TYPE_CASE(ANDROID_RELASZ); 1524 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1525 LLVM_READOBJ_TYPE_CASE(DEBUG); 1526 LLVM_READOBJ_TYPE_CASE(FINI); 1527 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1528 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1529 LLVM_READOBJ_TYPE_CASE(FLAGS); 1530 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1531 LLVM_READOBJ_TYPE_CASE(HASH); 1532 LLVM_READOBJ_TYPE_CASE(INIT); 1533 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1534 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1535 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1536 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1537 LLVM_READOBJ_TYPE_CASE(JMPREL); 1538 LLVM_READOBJ_TYPE_CASE(NEEDED); 1539 LLVM_READOBJ_TYPE_CASE(NULL); 1540 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1541 LLVM_READOBJ_TYPE_CASE(PLTREL); 1542 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1543 LLVM_READOBJ_TYPE_CASE(REL); 1544 LLVM_READOBJ_TYPE_CASE(RELA); 1545 LLVM_READOBJ_TYPE_CASE(RELENT); 1546 LLVM_READOBJ_TYPE_CASE(RELSZ); 1547 LLVM_READOBJ_TYPE_CASE(RELAENT); 1548 LLVM_READOBJ_TYPE_CASE(RELASZ); 1549 LLVM_READOBJ_TYPE_CASE(RPATH); 1550 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1551 LLVM_READOBJ_TYPE_CASE(SONAME); 1552 LLVM_READOBJ_TYPE_CASE(STRSZ); 1553 LLVM_READOBJ_TYPE_CASE(STRTAB); 1554 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1555 LLVM_READOBJ_TYPE_CASE(SYMENT); 1556 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1557 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1558 LLVM_READOBJ_TYPE_CASE(VERDEF); 1559 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1560 LLVM_READOBJ_TYPE_CASE(VERNEED); 1561 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1562 LLVM_READOBJ_TYPE_CASE(VERSYM); 1563 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1564 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1565 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1566 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1567 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1568 LLVM_READOBJ_TYPE_CASE(AUXILIARY); 1569 LLVM_READOBJ_TYPE_CASE(FILTER); 1570 default: return "unknown"; 1571 } 1572 } 1573 1574 #undef LLVM_READOBJ_TYPE_CASE 1575 1576 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1577 { #enum, prefix##_##enum } 1578 1579 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1580 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1581 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1582 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1583 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1584 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1585 }; 1586 1587 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1588 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1589 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1590 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1591 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1592 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1593 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1594 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1595 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1596 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1597 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1598 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1599 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1600 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1601 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1602 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1603 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1604 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1605 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1606 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1607 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1608 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1609 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1610 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1611 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1612 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1613 }; 1614 1615 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1616 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1617 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1618 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1619 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1620 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1621 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1622 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1623 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1624 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1625 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1626 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1627 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1628 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1629 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1630 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1631 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1632 }; 1633 1634 #undef LLVM_READOBJ_DT_FLAG_ENT 1635 1636 template <typename T, typename TFlag> 1637 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1638 using FlagEntry = EnumEntry<TFlag>; 1639 using FlagVector = SmallVector<FlagEntry, 10>; 1640 FlagVector SetFlags; 1641 1642 for (const auto &Flag : Flags) { 1643 if (Flag.Value == 0) 1644 continue; 1645 1646 if ((Value & Flag.Value) == Flag.Value) 1647 SetFlags.push_back(Flag); 1648 } 1649 1650 for (const auto &Flag : SetFlags) { 1651 OS << Flag.Name << " "; 1652 } 1653 } 1654 1655 template <class ELFT> 1656 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1657 if (Value >= DynamicStringTable.size()) 1658 reportError("Invalid dynamic string table reference"); 1659 return StringRef(DynamicStringTable.data() + Value); 1660 } 1661 1662 static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) { 1663 OS << Tag << ": [" << Name << "]"; 1664 } 1665 1666 template <class ELFT> 1667 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1668 raw_ostream &OS = W.getOStream(); 1669 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1670 switch (Type) { 1671 case DT_PLTREL: 1672 if (Value == DT_REL) { 1673 OS << "REL"; 1674 break; 1675 } else if (Value == DT_RELA) { 1676 OS << "RELA"; 1677 break; 1678 } 1679 LLVM_FALLTHROUGH; 1680 case DT_PLTGOT: 1681 case DT_HASH: 1682 case DT_STRTAB: 1683 case DT_SYMTAB: 1684 case DT_RELA: 1685 case DT_INIT: 1686 case DT_FINI: 1687 case DT_REL: 1688 case DT_JMPREL: 1689 case DT_INIT_ARRAY: 1690 case DT_FINI_ARRAY: 1691 case DT_PREINIT_ARRAY: 1692 case DT_DEBUG: 1693 case DT_VERDEF: 1694 case DT_VERNEED: 1695 case DT_VERSYM: 1696 case DT_GNU_HASH: 1697 case DT_NULL: 1698 case DT_MIPS_BASE_ADDRESS: 1699 case DT_MIPS_GOTSYM: 1700 case DT_MIPS_RLD_MAP: 1701 case DT_MIPS_RLD_MAP_REL: 1702 case DT_MIPS_PLTGOT: 1703 case DT_MIPS_OPTIONS: 1704 OS << format(ConvChar, Value); 1705 break; 1706 case DT_RELACOUNT: 1707 case DT_RELCOUNT: 1708 case DT_VERDEFNUM: 1709 case DT_VERNEEDNUM: 1710 case DT_MIPS_RLD_VERSION: 1711 case DT_MIPS_LOCAL_GOTNO: 1712 case DT_MIPS_SYMTABNO: 1713 case DT_MIPS_UNREFEXTNO: 1714 OS << Value; 1715 break; 1716 case DT_PLTRELSZ: 1717 case DT_RELASZ: 1718 case DT_RELAENT: 1719 case DT_STRSZ: 1720 case DT_SYMENT: 1721 case DT_RELSZ: 1722 case DT_RELENT: 1723 case DT_INIT_ARRAYSZ: 1724 case DT_FINI_ARRAYSZ: 1725 case DT_PREINIT_ARRAYSZ: 1726 case DT_ANDROID_RELSZ: 1727 case DT_ANDROID_RELASZ: 1728 OS << Value << " (bytes)"; 1729 break; 1730 case DT_NEEDED: 1731 printLibrary(OS, "Shared library", getDynamicString(Value)); 1732 break; 1733 case DT_SONAME: 1734 printLibrary(OS, "Library soname", getDynamicString(Value)); 1735 break; 1736 case DT_AUXILIARY: 1737 printLibrary(OS, "Auxiliary library", getDynamicString(Value)); 1738 break; 1739 case DT_FILTER: 1740 printLibrary(OS, "Filter library", getDynamicString(Value)); 1741 break; 1742 case DT_RPATH: 1743 case DT_RUNPATH: 1744 OS << getDynamicString(Value); 1745 break; 1746 case DT_MIPS_FLAGS: 1747 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1748 break; 1749 case DT_FLAGS: 1750 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1751 break; 1752 case DT_FLAGS_1: 1753 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1754 break; 1755 default: 1756 OS << format(ConvChar, Value); 1757 break; 1758 } 1759 } 1760 1761 template<class ELFT> 1762 void ELFDumper<ELFT>::printUnwindInfo() { 1763 W.startLine() << "UnwindInfo not implemented.\n"; 1764 } 1765 1766 namespace { 1767 1768 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1769 const unsigned Machine = Obj->getHeader()->e_machine; 1770 if (Machine == EM_ARM) { 1771 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1772 W, Obj, DotSymtabSec); 1773 return Ctx.PrintUnwindInformation(); 1774 } 1775 W.startLine() << "UnwindInfo not implemented.\n"; 1776 } 1777 1778 } // end anonymous namespace 1779 1780 template<class ELFT> 1781 void ELFDumper<ELFT>::printDynamicTable() { 1782 auto I = dynamic_table().begin(); 1783 auto E = dynamic_table().end(); 1784 1785 if (I == E) 1786 return; 1787 1788 --E; 1789 while (I != E && E->getTag() == ELF::DT_NULL) 1790 --E; 1791 if (E->getTag() != ELF::DT_NULL) 1792 ++E; 1793 ++E; 1794 1795 ptrdiff_t Total = std::distance(I, E); 1796 if (Total == 0) 1797 return; 1798 1799 raw_ostream &OS = W.getOStream(); 1800 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1801 1802 bool Is64 = ELFT::Is64Bits; 1803 1804 W.startLine() 1805 << " Tag" << (Is64 ? " " : " ") << "Type" 1806 << " " << "Name/Value\n"; 1807 while (I != E) { 1808 const Elf_Dyn &Entry = *I; 1809 uintX_t Tag = Entry.getTag(); 1810 ++I; 1811 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1812 << format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag)); 1813 printValue(Tag, Entry.getVal()); 1814 OS << "\n"; 1815 } 1816 1817 W.startLine() << "]\n"; 1818 } 1819 1820 template<class ELFT> 1821 void ELFDumper<ELFT>::printNeededLibraries() { 1822 ListScope D(W, "NeededLibraries"); 1823 1824 using LibsTy = std::vector<StringRef>; 1825 LibsTy Libs; 1826 1827 for (const auto &Entry : dynamic_table()) 1828 if (Entry.d_tag == ELF::DT_NEEDED) 1829 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1830 1831 std::stable_sort(Libs.begin(), Libs.end()); 1832 1833 for (const auto &L : Libs) { 1834 outs() << " " << L << "\n"; 1835 } 1836 } 1837 1838 1839 template <typename ELFT> 1840 void ELFDumper<ELFT>::printHashTable() { 1841 DictScope D(W, "HashTable"); 1842 if (!HashTable) 1843 return; 1844 W.printNumber("Num Buckets", HashTable->nbucket); 1845 W.printNumber("Num Chains", HashTable->nchain); 1846 W.printList("Buckets", HashTable->buckets()); 1847 W.printList("Chains", HashTable->chains()); 1848 } 1849 1850 template <typename ELFT> 1851 void ELFDumper<ELFT>::printGnuHashTable() { 1852 DictScope D(W, "GnuHashTable"); 1853 if (!GnuHashTable) 1854 return; 1855 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1856 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1857 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1858 W.printNumber("Shift Count", GnuHashTable->shift2); 1859 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1860 W.printList("Buckets", GnuHashTable->buckets()); 1861 Elf_Sym_Range Syms = dynamic_symbols(); 1862 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1863 if (!NumSyms) 1864 reportError("No dynamic symbol section"); 1865 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1866 } 1867 1868 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1869 outs() << "LoadName: " << SOName << '\n'; 1870 } 1871 1872 template <class ELFT> 1873 void ELFDumper<ELFT>::printAttributes() { 1874 W.startLine() << "Attributes not implemented.\n"; 1875 } 1876 1877 namespace { 1878 1879 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1880 if (Obj->getHeader()->e_machine != EM_ARM) { 1881 W.startLine() << "Attributes not implemented.\n"; 1882 return; 1883 } 1884 1885 DictScope BA(W, "BuildAttributes"); 1886 for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1887 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1888 continue; 1889 1890 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1891 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1892 errs() << "unrecognised FormatVersion: 0x" << utohexstr(Contents[0]) 1893 << '\n'; 1894 continue; 1895 } 1896 1897 W.printHex("FormatVersion", Contents[0]); 1898 if (Contents.size() == 1) 1899 continue; 1900 1901 ARMAttributeParser(&W).Parse(Contents, true); 1902 } 1903 } 1904 1905 template <class ELFT> class MipsGOTParser { 1906 public: 1907 TYPEDEF_ELF_TYPES(ELFT) 1908 using GOTEntry = typename ELFO::Elf_Addr; 1909 1910 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1911 Elf_Dyn_Range DynTable, ScopedPrinter &W); 1912 1913 void parseGOT(); 1914 void parsePLT(); 1915 1916 private: 1917 ELFDumper<ELFT> *Dumper; 1918 const ELFO *Obj; 1919 ScopedPrinter &W; 1920 Optional<uint64_t> DtPltGot; 1921 Optional<uint64_t> DtLocalGotNum; 1922 Optional<uint64_t> DtGotSym; 1923 Optional<uint64_t> DtMipsPltGot; 1924 Optional<uint64_t> DtJmpRel; 1925 1926 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1927 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1928 1929 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1930 const GOTEntry *It); 1931 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1932 const GOTEntry *It, const Elf_Sym *Sym, 1933 StringRef StrTable, bool IsDynamic); 1934 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1935 const GOTEntry *It, StringRef Purpose); 1936 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1937 const GOTEntry *It, StringRef StrTable, 1938 const Elf_Sym *Sym); 1939 }; 1940 1941 } // end anonymous namespace 1942 1943 template <class ELFT> 1944 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1945 Elf_Dyn_Range DynTable, ScopedPrinter &W) 1946 : Dumper(Dumper), Obj(Obj), W(W) { 1947 for (const auto &Entry : DynTable) { 1948 switch (Entry.getTag()) { 1949 case ELF::DT_PLTGOT: 1950 DtPltGot = Entry.getVal(); 1951 break; 1952 case ELF::DT_MIPS_LOCAL_GOTNO: 1953 DtLocalGotNum = Entry.getVal(); 1954 break; 1955 case ELF::DT_MIPS_GOTSYM: 1956 DtGotSym = Entry.getVal(); 1957 break; 1958 case ELF::DT_MIPS_PLTGOT: 1959 DtMipsPltGot = Entry.getVal(); 1960 break; 1961 case ELF::DT_JMPREL: 1962 DtJmpRel = Entry.getVal(); 1963 break; 1964 } 1965 } 1966 } 1967 1968 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1969 // See "Global Offset Table" in Chapter 5 in the following document 1970 // for detailed GOT description. 1971 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1972 if (!DtPltGot) { 1973 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1974 return; 1975 } 1976 if (!DtLocalGotNum) { 1977 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1978 return; 1979 } 1980 if (!DtGotSym) { 1981 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1982 return; 1983 } 1984 1985 StringRef StrTable = Dumper->getDynamicStringTable(); 1986 const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin(); 1987 const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end(); 1988 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1989 1990 if (*DtGotSym > DynSymTotal) 1991 report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols"); 1992 1993 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1994 1995 if (*DtLocalGotNum + GlobalGotNum == 0) { 1996 W.startLine() << "GOT is empty.\n"; 1997 return; 1998 } 1999 2000 const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot); 2001 if (!GOTShdr) 2002 report_fatal_error("There is no not empty GOT section at 0x" + 2003 Twine::utohexstr(*DtPltGot)); 2004 2005 ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr)); 2006 2007 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT)) 2008 report_fatal_error("Number of GOT entries exceeds the size of GOT section"); 2009 2010 const GOTEntry *GotBegin = makeGOTIter(GOT, 0); 2011 const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum); 2012 const GOTEntry *It = GotBegin; 2013 2014 DictScope GS(W, "Primary GOT"); 2015 2016 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 2017 { 2018 ListScope RS(W, "Reserved entries"); 2019 2020 { 2021 DictScope D(W, "Entry"); 2022 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 2023 W.printString("Purpose", StringRef("Lazy resolver")); 2024 } 2025 2026 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 2027 DictScope D(W, "Entry"); 2028 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 2029 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 2030 } 2031 } 2032 { 2033 ListScope LS(W, "Local entries"); 2034 for (; It != GotLocalEnd; ++It) { 2035 DictScope D(W, "Entry"); 2036 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 2037 } 2038 } 2039 { 2040 ListScope GS(W, "Global entries"); 2041 2042 const GOTEntry *GotGlobalEnd = 2043 makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum); 2044 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 2045 for (; It != GotGlobalEnd; ++It) { 2046 DictScope D(W, "Entry"); 2047 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable, 2048 true); 2049 } 2050 } 2051 2052 std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum; 2053 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 2054 } 2055 2056 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 2057 if (!DtMipsPltGot) { 2058 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 2059 return; 2060 } 2061 if (!DtJmpRel) { 2062 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 2063 return; 2064 } 2065 2066 const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2067 if (!PLTShdr) 2068 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2069 Twine::utohexstr(*DtMipsPltGot)); 2070 ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr)); 2071 2072 const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2073 if (!PLTRelShdr) 2074 report_fatal_error("There is no not empty RELPLT section at 0x" + 2075 Twine::utohexstr(*DtJmpRel)); 2076 const Elf_Shdr *SymTable = 2077 unwrapOrError(Obj->getSection(PLTRelShdr->sh_link)); 2078 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable)); 2079 2080 const GOTEntry *PLTBegin = makeGOTIter(PLT, 0); 2081 const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT)); 2082 const GOTEntry *It = PLTBegin; 2083 2084 DictScope GS(W, "PLT GOT"); 2085 { 2086 ListScope RS(W, "Reserved entries"); 2087 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 2088 if (It != PLTEnd) 2089 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 2090 } 2091 { 2092 ListScope GS(W, "Entries"); 2093 2094 switch (PLTRelShdr->sh_type) { 2095 case ELF::SHT_REL: 2096 for (const Elf_Rel &Rel : unwrapOrError(Obj->rels(PLTRelShdr))) { 2097 const Elf_Sym *Sym = 2098 unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable)); 2099 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2100 if (++It == PLTEnd) 2101 break; 2102 } 2103 break; 2104 case ELF::SHT_RELA: 2105 for (const Elf_Rela &Rel : unwrapOrError(Obj->relas(PLTRelShdr))) { 2106 const Elf_Sym *Sym = 2107 unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable)); 2108 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2109 if (++It == PLTEnd) 2110 break; 2111 } 2112 break; 2113 } 2114 } 2115 } 2116 2117 template <class ELFT> 2118 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 2119 return GOT.size() / sizeof(GOTEntry); 2120 } 2121 2122 template <class ELFT> 2123 const typename MipsGOTParser<ELFT>::GOTEntry * 2124 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 2125 const char *Data = reinterpret_cast<const char *>(GOT.data()); 2126 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 2127 } 2128 2129 template <class ELFT> 2130 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 2131 const GOTEntry *BeginIt, 2132 const GOTEntry *It) { 2133 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2134 W.printHex("Address", GotAddr + Offset); 2135 W.printNumber("Access", Offset - 0x7ff0); 2136 W.printHex("Initial", *It); 2137 } 2138 2139 template <class ELFT> 2140 void MipsGOTParser<ELFT>::printGlobalGotEntry( 2141 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 2142 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 2143 printGotEntry(GotAddr, BeginIt, It); 2144 2145 W.printHex("Value", Sym->st_value); 2146 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2147 2148 unsigned SectionIndex = 0; 2149 StringRef SectionName; 2150 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2151 Dumper->getShndxTable(), SectionName, SectionIndex); 2152 W.printHex("Section", SectionName, SectionIndex); 2153 2154 std::string FullSymbolName = 2155 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 2156 W.printNumber("Name", FullSymbolName, Sym->st_name); 2157 } 2158 2159 template <class ELFT> 2160 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2161 const GOTEntry *BeginIt, 2162 const GOTEntry *It, StringRef Purpose) { 2163 DictScope D(W, "Entry"); 2164 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2165 W.printHex("Address", PLTAddr + Offset); 2166 W.printHex("Initial", *It); 2167 W.printString("Purpose", Purpose); 2168 } 2169 2170 template <class ELFT> 2171 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2172 const GOTEntry *BeginIt, 2173 const GOTEntry *It, StringRef StrTable, 2174 const Elf_Sym *Sym) { 2175 DictScope D(W, "Entry"); 2176 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2177 W.printHex("Address", PLTAddr + Offset); 2178 W.printHex("Initial", *It); 2179 W.printHex("Value", Sym->st_value); 2180 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2181 2182 unsigned SectionIndex = 0; 2183 StringRef SectionName; 2184 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2185 Dumper->getShndxTable(), SectionName, SectionIndex); 2186 W.printHex("Section", SectionName, SectionIndex); 2187 2188 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 2189 W.printNumber("Name", FullSymbolName, Sym->st_name); 2190 } 2191 2192 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2193 if (Obj->getHeader()->e_machine != EM_MIPS) { 2194 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2195 return; 2196 } 2197 2198 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2199 GOTParser.parseGOT(); 2200 GOTParser.parsePLT(); 2201 } 2202 2203 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2204 {"None", Mips::AFL_EXT_NONE}, 2205 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2206 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2207 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2208 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2209 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2210 {"LSI R4010", Mips::AFL_EXT_4010}, 2211 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2212 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2213 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2214 {"MIPS R4650", Mips::AFL_EXT_4650}, 2215 {"MIPS R5900", Mips::AFL_EXT_5900}, 2216 {"MIPS R10000", Mips::AFL_EXT_10000}, 2217 {"NEC VR4100", Mips::AFL_EXT_4100}, 2218 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2219 {"NEC VR4120", Mips::AFL_EXT_4120}, 2220 {"NEC VR5400", Mips::AFL_EXT_5400}, 2221 {"NEC VR5500", Mips::AFL_EXT_5500}, 2222 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2223 {"Toshiba R3900", Mips::AFL_EXT_3900} 2224 }; 2225 2226 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2227 {"DSP", Mips::AFL_ASE_DSP}, 2228 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2229 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2230 {"MCU", Mips::AFL_ASE_MCU}, 2231 {"MDMX", Mips::AFL_ASE_MDMX}, 2232 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2233 {"MT", Mips::AFL_ASE_MT}, 2234 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2235 {"VZ", Mips::AFL_ASE_VIRT}, 2236 {"MSA", Mips::AFL_ASE_MSA}, 2237 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2238 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2239 {"XPA", Mips::AFL_ASE_XPA} 2240 }; 2241 2242 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2243 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2244 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2245 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2246 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2247 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2248 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2249 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2250 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2251 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2252 Mips::Val_GNU_MIPS_ABI_FP_64A} 2253 }; 2254 2255 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2256 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2257 }; 2258 2259 static int getMipsRegisterSize(uint8_t Flag) { 2260 switch (Flag) { 2261 case Mips::AFL_REG_NONE: 2262 return 0; 2263 case Mips::AFL_REG_32: 2264 return 32; 2265 case Mips::AFL_REG_64: 2266 return 64; 2267 case Mips::AFL_REG_128: 2268 return 128; 2269 default: 2270 return -1; 2271 } 2272 } 2273 2274 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2275 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2276 if (!Shdr) { 2277 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2278 return; 2279 } 2280 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2281 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2282 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2283 return; 2284 } 2285 2286 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2287 2288 raw_ostream &OS = W.getOStream(); 2289 DictScope GS(W, "MIPS ABI Flags"); 2290 2291 W.printNumber("Version", Flags->version); 2292 W.startLine() << "ISA: "; 2293 if (Flags->isa_rev <= 1) 2294 OS << format("MIPS%u", Flags->isa_level); 2295 else 2296 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2297 OS << "\n"; 2298 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2299 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2300 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2301 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2302 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2303 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2304 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2305 W.printHex("Flags 2", Flags->flags2); 2306 } 2307 2308 template <class ELFT> 2309 static void printMipsReginfoData(ScopedPrinter &W, 2310 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2311 W.printHex("GP", Reginfo.ri_gp_value); 2312 W.printHex("General Mask", Reginfo.ri_gprmask); 2313 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2314 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2315 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2316 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2317 } 2318 2319 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2320 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2321 if (!Shdr) { 2322 W.startLine() << "There is no .reginfo section in the file.\n"; 2323 return; 2324 } 2325 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2326 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2327 W.startLine() << "The .reginfo section has a wrong size.\n"; 2328 return; 2329 } 2330 2331 DictScope GS(W, "MIPS RegInfo"); 2332 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2333 printMipsReginfoData(W, *Reginfo); 2334 } 2335 2336 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2337 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2338 if (!Shdr) { 2339 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2340 return; 2341 } 2342 2343 DictScope GS(W, "MIPS Options"); 2344 2345 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2346 while (!Sec.empty()) { 2347 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2348 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2349 return; 2350 } 2351 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2352 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2353 switch (O->kind) { 2354 case ODK_REGINFO: 2355 printMipsReginfoData(W, O->getRegInfo()); 2356 break; 2357 default: 2358 W.startLine() << "Unsupported MIPS options tag.\n"; 2359 break; 2360 } 2361 Sec = Sec.slice(O->size); 2362 } 2363 } 2364 2365 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2366 const Elf_Shdr *StackMapSection = nullptr; 2367 for (const auto &Sec : unwrapOrError(Obj->sections())) { 2368 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2369 if (Name == ".llvm_stackmaps") { 2370 StackMapSection = &Sec; 2371 break; 2372 } 2373 } 2374 2375 if (!StackMapSection) 2376 return; 2377 2378 ArrayRef<uint8_t> StackMapContentsArray = 2379 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2380 2381 prettyPrintStackMap(outs(), StackMapV2Parser<ELFT::TargetEndianness>( 2382 StackMapContentsArray)); 2383 } 2384 2385 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2386 ELFDumperStyle->printGroupSections(Obj); 2387 } 2388 2389 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2390 StringRef Str2) { 2391 OS.PadToColumn(2u); 2392 OS << Str1; 2393 OS.PadToColumn(37u); 2394 OS << Str2 << "\n"; 2395 OS.flush(); 2396 } 2397 2398 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2399 const Elf_Ehdr *e = Obj->getHeader(); 2400 OS << "ELF Header:\n"; 2401 OS << " Magic: "; 2402 std::string Str; 2403 for (int i = 0; i < ELF::EI_NIDENT; i++) 2404 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2405 OS << "\n"; 2406 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2407 printFields(OS, "Class:", Str); 2408 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2409 printFields(OS, "Data:", Str); 2410 OS.PadToColumn(2u); 2411 OS << "Version:"; 2412 OS.PadToColumn(37u); 2413 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2414 if (e->e_version == ELF::EV_CURRENT) 2415 OS << " (current)"; 2416 OS << "\n"; 2417 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2418 printFields(OS, "OS/ABI:", Str); 2419 Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2420 printFields(OS, "ABI Version:", Str); 2421 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2422 printFields(OS, "Type:", Str); 2423 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2424 printFields(OS, "Machine:", Str); 2425 Str = "0x" + to_hexString(e->e_version); 2426 printFields(OS, "Version:", Str); 2427 Str = "0x" + to_hexString(e->e_entry); 2428 printFields(OS, "Entry point address:", Str); 2429 Str = to_string(e->e_phoff) + " (bytes into file)"; 2430 printFields(OS, "Start of program headers:", Str); 2431 Str = to_string(e->e_shoff) + " (bytes into file)"; 2432 printFields(OS, "Start of section headers:", Str); 2433 Str = "0x" + to_hexString(e->e_flags); 2434 printFields(OS, "Flags:", Str); 2435 Str = to_string(e->e_ehsize) + " (bytes)"; 2436 printFields(OS, "Size of this header:", Str); 2437 Str = to_string(e->e_phentsize) + " (bytes)"; 2438 printFields(OS, "Size of program headers:", Str); 2439 Str = to_string(e->e_phnum); 2440 printFields(OS, "Number of program headers:", Str); 2441 Str = to_string(e->e_shentsize) + " (bytes)"; 2442 printFields(OS, "Size of section headers:", Str); 2443 Str = to_string(e->e_shnum); 2444 printFields(OS, "Number of section headers:", Str); 2445 Str = to_string(e->e_shstrndx); 2446 printFields(OS, "Section header string table index:", Str); 2447 } 2448 2449 namespace { 2450 struct GroupMember { 2451 StringRef Name; 2452 uint64_t Index; 2453 }; 2454 2455 struct GroupSection { 2456 StringRef Name; 2457 StringRef Signature; 2458 uint64_t ShName; 2459 uint64_t Index; 2460 uint32_t Type; 2461 std::vector<GroupMember> Members; 2462 }; 2463 2464 template <class ELFT> 2465 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) { 2466 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 2467 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 2468 using Elf_Word = typename ELFFile<ELFT>::Elf_Word; 2469 2470 std::vector<GroupSection> Ret; 2471 uint64_t I = 0; 2472 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2473 ++I; 2474 if (Sec.sh_type != ELF::SHT_GROUP) 2475 continue; 2476 2477 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2478 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2479 const Elf_Sym *Sym = 2480 unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 2481 auto Data = 2482 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2483 2484 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2485 StringRef Signature = StrTable.data() + Sym->st_name; 2486 Ret.push_back({Name, Signature, Sec.sh_name, I - 1, Data[0], {}}); 2487 2488 std::vector<GroupMember> &GM = Ret.back().Members; 2489 for (uint32_t Ndx : Data.slice(1)) { 2490 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2491 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2492 GM.push_back({Name, Ndx}); 2493 } 2494 } 2495 return Ret; 2496 } 2497 2498 DenseMap<uint64_t, const GroupSection *> 2499 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 2500 DenseMap<uint64_t, const GroupSection *> Ret; 2501 for (const GroupSection &G : Groups) 2502 for (const GroupMember &GM : G.Members) 2503 Ret.insert({GM.Index, &G}); 2504 return Ret; 2505 } 2506 2507 } // namespace 2508 2509 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2510 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 2511 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 2512 for (const GroupSection &G : V) { 2513 OS << "\n" 2514 << getGroupType(G.Type) << " group section [" 2515 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 2516 << "] contains " << G.Members.size() << " sections:\n" 2517 << " [Index] Name\n"; 2518 for (const GroupMember &GM : G.Members) { 2519 const GroupSection *MainGroup = Map[GM.Index]; 2520 if (MainGroup != &G) { 2521 OS.flush(); 2522 errs() << "Error: section [" << format_decimal(GM.Index, 5) 2523 << "] in group section [" << format_decimal(G.Index, 5) 2524 << "] already in group section [" 2525 << format_decimal(MainGroup->Index, 5) << "]"; 2526 errs().flush(); 2527 continue; 2528 } 2529 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 2530 } 2531 } 2532 2533 if (V.empty()) 2534 OS << "There are no section groups in this file.\n"; 2535 } 2536 2537 template <class ELFT> 2538 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2539 const Elf_Rela &R, bool IsRela) { 2540 std::string Offset, Info, Addend, Value; 2541 SmallString<32> RelocName; 2542 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2543 StringRef TargetName; 2544 const Elf_Sym *Sym = nullptr; 2545 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2546 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2547 2548 // First two fields are bit width dependent. The rest of them are after are 2549 // fixed width. 2550 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2551 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2552 Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab)); 2553 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2554 const Elf_Shdr *Sec = unwrapOrError( 2555 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2556 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2557 } else if (Sym) { 2558 TargetName = unwrapOrError(Sym->getName(StrTable)); 2559 } 2560 2561 if (Sym && IsRela) { 2562 if (R.r_addend < 0) 2563 Addend = " - "; 2564 else 2565 Addend = " + "; 2566 } 2567 2568 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2569 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2570 2571 int64_t RelAddend = R.r_addend; 2572 if (IsRela) 2573 Addend += to_hexString(std::abs(RelAddend), false); 2574 2575 if (Sym) 2576 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2577 2578 Fields[0].Str = Offset; 2579 Fields[1].Str = Info; 2580 Fields[2].Str = RelocName; 2581 Fields[3].Str = Value; 2582 Fields[4].Str = TargetName; 2583 for (auto &field : Fields) 2584 printField(field); 2585 OS << Addend; 2586 OS << "\n"; 2587 } 2588 2589 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2590 if (Is64) 2591 OS << " Offset Info Type" 2592 << " Symbol's Value Symbol's Name"; 2593 else 2594 OS << " Offset Info Type Sym. Value " 2595 << "Symbol's Name"; 2596 if (IsRela) 2597 OS << (IsRela ? " + Addend" : ""); 2598 OS << "\n"; 2599 } 2600 2601 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2602 bool HasRelocSections = false; 2603 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2604 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 2605 Sec.sh_type != ELF::SHT_ANDROID_REL && 2606 Sec.sh_type != ELF::SHT_ANDROID_RELA) 2607 continue; 2608 HasRelocSections = true; 2609 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2610 unsigned Entries = Sec.getEntityCount(); 2611 uintX_t Offset = Sec.sh_offset; 2612 OS << "\nRelocation section '" << Name << "' at offset 0x" 2613 << to_hexString(Offset, false) << " contains " << Entries 2614 << " entries:\n"; 2615 printRelocHeader(OS, ELFT::Is64Bits, 2616 Sec.sh_type == ELF::SHT_RELA || 2617 Sec.sh_type == ELF::SHT_ANDROID_RELA); 2618 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2619 switch (Sec.sh_type) { 2620 case ELF::SHT_REL: 2621 for (const auto &R : unwrapOrError(Obj->rels(&Sec))) { 2622 Elf_Rela Rela; 2623 Rela.r_offset = R.r_offset; 2624 Rela.r_info = R.r_info; 2625 Rela.r_addend = 0; 2626 printRelocation(Obj, SymTab, Rela, false); 2627 } 2628 break; 2629 case ELF::SHT_RELA: 2630 for (const auto &R : unwrapOrError(Obj->relas(&Sec))) 2631 printRelocation(Obj, SymTab, R, true); 2632 break; 2633 case ELF::SHT_ANDROID_REL: 2634 case ELF::SHT_ANDROID_RELA: 2635 for (const auto &R : unwrapOrError(Obj->android_relas(&Sec))) 2636 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA); 2637 break; 2638 } 2639 } 2640 if (!HasRelocSections) 2641 OS << "\nThere are no relocations in this file.\n"; 2642 } 2643 2644 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2645 using namespace ELF; 2646 2647 switch (Arch) { 2648 case EM_ARM: 2649 switch (Type) { 2650 case SHT_ARM_EXIDX: 2651 return "ARM_EXIDX"; 2652 case SHT_ARM_PREEMPTMAP: 2653 return "ARM_PREEMPTMAP"; 2654 case SHT_ARM_ATTRIBUTES: 2655 return "ARM_ATTRIBUTES"; 2656 case SHT_ARM_DEBUGOVERLAY: 2657 return "ARM_DEBUGOVERLAY"; 2658 case SHT_ARM_OVERLAYSECTION: 2659 return "ARM_OVERLAYSECTION"; 2660 } 2661 case EM_X86_64: 2662 switch (Type) { 2663 case SHT_X86_64_UNWIND: 2664 return "X86_64_UNWIND"; 2665 } 2666 case EM_MIPS: 2667 case EM_MIPS_RS3_LE: 2668 switch (Type) { 2669 case SHT_MIPS_REGINFO: 2670 return "MIPS_REGINFO"; 2671 case SHT_MIPS_OPTIONS: 2672 return "MIPS_OPTIONS"; 2673 case SHT_MIPS_ABIFLAGS: 2674 return "MIPS_ABIFLAGS"; 2675 case SHT_MIPS_DWARF: 2676 return "SHT_MIPS_DWARF"; 2677 } 2678 } 2679 switch (Type) { 2680 case SHT_NULL: 2681 return "NULL"; 2682 case SHT_PROGBITS: 2683 return "PROGBITS"; 2684 case SHT_SYMTAB: 2685 return "SYMTAB"; 2686 case SHT_STRTAB: 2687 return "STRTAB"; 2688 case SHT_RELA: 2689 return "RELA"; 2690 case SHT_HASH: 2691 return "HASH"; 2692 case SHT_DYNAMIC: 2693 return "DYNAMIC"; 2694 case SHT_NOTE: 2695 return "NOTE"; 2696 case SHT_NOBITS: 2697 return "NOBITS"; 2698 case SHT_REL: 2699 return "REL"; 2700 case SHT_SHLIB: 2701 return "SHLIB"; 2702 case SHT_DYNSYM: 2703 return "DYNSYM"; 2704 case SHT_INIT_ARRAY: 2705 return "INIT_ARRAY"; 2706 case SHT_FINI_ARRAY: 2707 return "FINI_ARRAY"; 2708 case SHT_PREINIT_ARRAY: 2709 return "PREINIT_ARRAY"; 2710 case SHT_GROUP: 2711 return "GROUP"; 2712 case SHT_SYMTAB_SHNDX: 2713 return "SYMTAB SECTION INDICES"; 2714 case SHT_LLVM_ODRTAB: 2715 return "LLVM_ODRTAB"; 2716 // FIXME: Parse processor specific GNU attributes 2717 case SHT_GNU_ATTRIBUTES: 2718 return "ATTRIBUTES"; 2719 case SHT_GNU_HASH: 2720 return "GNU_HASH"; 2721 case SHT_GNU_verdef: 2722 return "VERDEF"; 2723 case SHT_GNU_verneed: 2724 return "VERNEED"; 2725 case SHT_GNU_versym: 2726 return "VERSYM"; 2727 default: 2728 return ""; 2729 } 2730 return ""; 2731 } 2732 2733 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2734 size_t SectionIndex = 0; 2735 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2736 Alignment; 2737 unsigned Bias; 2738 unsigned Width; 2739 2740 if (ELFT::Is64Bits) { 2741 Bias = 0; 2742 Width = 16; 2743 } else { 2744 Bias = 8; 2745 Width = 8; 2746 } 2747 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2748 << " section headers, starting at offset " 2749 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2750 OS << "Section Headers:\n"; 2751 Field Fields[11] = {{"[Nr]", 2}, 2752 {"Name", 7}, 2753 {"Type", 25}, 2754 {"Address", 41}, 2755 {"Off", 58 - Bias}, 2756 {"Size", 65 - Bias}, 2757 {"ES", 72 - Bias}, 2758 {"Flg", 75 - Bias}, 2759 {"Lk", 79 - Bias}, 2760 {"Inf", 82 - Bias}, 2761 {"Al", 86 - Bias}}; 2762 for (auto &f : Fields) 2763 printField(f); 2764 OS << "\n"; 2765 2766 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2767 Number = to_string(SectionIndex); 2768 Fields[0].Str = Number; 2769 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2770 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2771 Fields[2].Str = Type; 2772 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2773 Fields[3].Str = Address; 2774 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2775 Fields[4].Str = Offset; 2776 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2777 Fields[5].Str = Size; 2778 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2779 Fields[6].Str = EntrySize; 2780 Flags = getGNUFlags(Sec.sh_flags); 2781 Fields[7].Str = Flags; 2782 Link = to_string(Sec.sh_link); 2783 Fields[8].Str = Link; 2784 Info = to_string(Sec.sh_info); 2785 Fields[9].Str = Info; 2786 Alignment = to_string(Sec.sh_addralign); 2787 Fields[10].Str = Alignment; 2788 OS.PadToColumn(Fields[0].Column); 2789 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2790 for (int i = 1; i < 7; i++) 2791 printField(Fields[i]); 2792 OS.PadToColumn(Fields[7].Column); 2793 OS << right_justify(Fields[7].Str, 3); 2794 OS.PadToColumn(Fields[8].Column); 2795 OS << right_justify(Fields[8].Str, 2); 2796 OS.PadToColumn(Fields[9].Column); 2797 OS << right_justify(Fields[9].Str, 3); 2798 OS.PadToColumn(Fields[10].Column); 2799 OS << right_justify(Fields[10].Str, 2); 2800 OS << "\n"; 2801 ++SectionIndex; 2802 } 2803 OS << "Key to Flags:\n" 2804 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2805 "(large)\n" 2806 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2807 x (unknown)\n" 2808 << " O (extra OS processing required) o (OS specific),\ 2809 p (processor specific)\n"; 2810 } 2811 2812 template <class ELFT> 2813 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2814 size_t Entries) { 2815 if (!Name.empty()) 2816 OS << "\nSymbol table '" << Name << "' contains " << Entries 2817 << " entries:\n"; 2818 else 2819 OS << "\n Symbol table for image:\n"; 2820 2821 if (ELFT::Is64Bits) 2822 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2823 else 2824 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2825 } 2826 2827 template <class ELFT> 2828 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2829 const Elf_Sym *Symbol, 2830 const Elf_Sym *FirstSym) { 2831 unsigned SectionIndex = Symbol->st_shndx; 2832 switch (SectionIndex) { 2833 case ELF::SHN_UNDEF: 2834 return "UND"; 2835 case ELF::SHN_ABS: 2836 return "ABS"; 2837 case ELF::SHN_COMMON: 2838 return "COM"; 2839 case ELF::SHN_XINDEX: 2840 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 2841 Symbol, FirstSym, this->dumper()->getShndxTable())); 2842 LLVM_FALLTHROUGH; 2843 default: 2844 // Find if: 2845 // Processor specific 2846 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2847 return std::string("PRC[0x") + 2848 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2849 // OS specific 2850 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2851 return std::string("OS[0x") + 2852 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2853 // Architecture reserved: 2854 if (SectionIndex >= ELF::SHN_LORESERVE && 2855 SectionIndex <= ELF::SHN_HIRESERVE) 2856 return std::string("RSV[0x") + 2857 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2858 // A normal section with an index 2859 return to_string(format_decimal(SectionIndex, 3)); 2860 } 2861 } 2862 2863 template <class ELFT> 2864 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2865 const Elf_Sym *FirstSym, StringRef StrTable, 2866 bool IsDynamic) { 2867 static int Idx = 0; 2868 static bool Dynamic = true; 2869 size_t Width; 2870 2871 // If this function was called with a different value from IsDynamic 2872 // from last call, happens when we move from dynamic to static symbol 2873 // table, "Num" field should be reset. 2874 if (!Dynamic != !IsDynamic) { 2875 Idx = 0; 2876 Dynamic = false; 2877 } 2878 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2879 unsigned Bias = 0; 2880 if (ELFT::Is64Bits) { 2881 Bias = 8; 2882 Width = 16; 2883 } else { 2884 Bias = 0; 2885 Width = 8; 2886 } 2887 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2888 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2889 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2890 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2891 Size = to_string(format_decimal(Symbol->st_size, 5)); 2892 unsigned char SymbolType = Symbol->getType(); 2893 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2894 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2895 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2896 else 2897 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2898 unsigned Vis = Symbol->getVisibility(); 2899 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2900 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2901 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2902 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2903 Fields[0].Str = Num; 2904 Fields[1].Str = Value; 2905 Fields[2].Str = Size; 2906 Fields[3].Str = Type; 2907 Fields[4].Str = Binding; 2908 Fields[5].Str = Visibility; 2909 Fields[6].Str = Section; 2910 Fields[7].Str = Name; 2911 for (auto &Entry : Fields) 2912 printField(Entry); 2913 OS << "\n"; 2914 } 2915 template <class ELFT> 2916 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 2917 uint32_t Sym, StringRef StrTable, 2918 uint32_t Bucket) { 2919 std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section; 2920 unsigned Width, Bias = 0; 2921 if (ELFT::Is64Bits) { 2922 Bias = 8; 2923 Width = 16; 2924 } else { 2925 Bias = 0; 2926 Width = 8; 2927 } 2928 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 2929 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 2930 Num = to_string(format_decimal(Sym, 5)); 2931 Buc = to_string(format_decimal(Bucket, 3)) + ":"; 2932 2933 const auto Symbol = FirstSym + Sym; 2934 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2935 Size = to_string(format_decimal(Symbol->st_size, 5)); 2936 unsigned char SymbolType = Symbol->getType(); 2937 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2938 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2939 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2940 else 2941 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2942 unsigned Vis = Symbol->getVisibility(); 2943 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2944 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2945 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2946 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 2947 Fields[0].Str = Num; 2948 Fields[1].Str = Buc; 2949 Fields[2].Str = Value; 2950 Fields[3].Str = Size; 2951 Fields[4].Str = Type; 2952 Fields[5].Str = Binding; 2953 Fields[6].Str = Visibility; 2954 Fields[7].Str = Section; 2955 Fields[8].Str = Name; 2956 for (auto &Entry : Fields) 2957 printField(Entry); 2958 OS << "\n"; 2959 } 2960 2961 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2962 if (opts::DynamicSymbols) 2963 return; 2964 this->dumper()->printSymbolsHelper(true); 2965 this->dumper()->printSymbolsHelper(false); 2966 } 2967 2968 template <class ELFT> 2969 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2970 if (this->dumper()->getDynamicStringTable().empty()) 2971 return; 2972 auto StringTable = this->dumper()->getDynamicStringTable(); 2973 auto DynSyms = this->dumper()->dynamic_symbols(); 2974 auto GnuHash = this->dumper()->getGnuHashTable(); 2975 auto SysVHash = this->dumper()->getHashTable(); 2976 2977 // If no hash or .gnu.hash found, try using symbol table 2978 if (GnuHash == nullptr && SysVHash == nullptr) 2979 this->dumper()->printSymbolsHelper(true); 2980 2981 // Try printing .hash 2982 if (this->dumper()->getHashTable()) { 2983 OS << "\n Symbol table of .hash for image:\n"; 2984 if (ELFT::Is64Bits) 2985 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2986 else 2987 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2988 OS << "\n"; 2989 2990 uint32_t NBuckets = SysVHash->nbucket; 2991 uint32_t NChains = SysVHash->nchain; 2992 auto Buckets = SysVHash->buckets(); 2993 auto Chains = SysVHash->chains(); 2994 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 2995 if (Buckets[Buc] == ELF::STN_UNDEF) 2996 continue; 2997 for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) { 2998 if (Ch == ELF::STN_UNDEF) 2999 break; 3000 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc); 3001 } 3002 } 3003 } 3004 3005 // Try printing .gnu.hash 3006 if (GnuHash) { 3007 OS << "\n Symbol table of .gnu.hash for image:\n"; 3008 if (ELFT::Is64Bits) 3009 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3010 else 3011 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3012 OS << "\n"; 3013 uint32_t NBuckets = GnuHash->nbuckets; 3014 auto Buckets = GnuHash->buckets(); 3015 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 3016 if (Buckets[Buc] == ELF::STN_UNDEF) 3017 continue; 3018 uint32_t Index = Buckets[Buc]; 3019 uint32_t GnuHashable = Index - GnuHash->symndx; 3020 // Print whole chain 3021 while (true) { 3022 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc); 3023 // Chain ends at symbol with stopper bit 3024 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1) 3025 break; 3026 } 3027 } 3028 } 3029 } 3030 3031 static inline std::string printPhdrFlags(unsigned Flag) { 3032 std::string Str; 3033 Str = (Flag & PF_R) ? "R" : " "; 3034 Str += (Flag & PF_W) ? "W" : " "; 3035 Str += (Flag & PF_X) ? "E" : " "; 3036 return Str; 3037 } 3038 3039 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 3040 // PT_TLS must only have SHF_TLS sections 3041 template <class ELFT> 3042 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 3043 const Elf_Shdr &Sec) { 3044 return (((Sec.sh_flags & ELF::SHF_TLS) && 3045 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 3046 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 3047 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 3048 } 3049 3050 // Non-SHT_NOBITS must have its offset inside the segment 3051 // Only non-zero section can be at end of segment 3052 template <class ELFT> 3053 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3054 if (Sec.sh_type == ELF::SHT_NOBITS) 3055 return true; 3056 bool IsSpecial = 3057 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3058 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3059 auto SectionSize = 3060 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3061 if (Sec.sh_offset >= Phdr.p_offset) 3062 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 3063 /*only non-zero sized sections at end*/ && 3064 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 3065 return false; 3066 } 3067 3068 // SHF_ALLOC must have VMA inside segment 3069 // Only non-zero section can be at end of segment 3070 template <class ELFT> 3071 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3072 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 3073 return true; 3074 bool IsSpecial = 3075 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3076 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3077 auto SectionSize = 3078 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3079 if (Sec.sh_addr >= Phdr.p_vaddr) 3080 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 3081 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 3082 return false; 3083 } 3084 3085 // No section with zero size must be at start or end of PT_DYNAMIC 3086 template <class ELFT> 3087 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3088 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 3089 return true; 3090 // Is section within the phdr both based on offset and VMA ? 3091 return ((Sec.sh_type == ELF::SHT_NOBITS) || 3092 (Sec.sh_offset > Phdr.p_offset && 3093 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 3094 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 3095 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 3096 } 3097 3098 template <class ELFT> 3099 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3100 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3101 unsigned Width = ELFT::Is64Bits ? 18 : 10; 3102 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 3103 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 3104 3105 const Elf_Ehdr *Header = Obj->getHeader(); 3106 Field Fields[8] = {2, 17, 26, 37 + Bias, 3107 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 3108 OS << "\nElf file type is " 3109 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 3110 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 3111 << "There are " << Header->e_phnum << " program headers," 3112 << " starting at offset " << Header->e_phoff << "\n\n" 3113 << "Program Headers:\n"; 3114 if (ELFT::Is64Bits) 3115 OS << " Type Offset VirtAddr PhysAddr " 3116 << " FileSiz MemSiz Flg Align\n"; 3117 else 3118 OS << " Type Offset VirtAddr PhysAddr FileSiz " 3119 << "MemSiz Flg Align\n"; 3120 for (const auto &Phdr : unwrapOrError(Obj->program_headers())) { 3121 Type = getElfPtType(Header->e_machine, Phdr.p_type); 3122 Offset = to_string(format_hex(Phdr.p_offset, 8)); 3123 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 3124 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 3125 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 3126 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 3127 Flag = printPhdrFlags(Phdr.p_flags); 3128 Align = to_string(format_hex(Phdr.p_align, 1)); 3129 Fields[0].Str = Type; 3130 Fields[1].Str = Offset; 3131 Fields[2].Str = VMA; 3132 Fields[3].Str = LMA; 3133 Fields[4].Str = FileSz; 3134 Fields[5].Str = MemSz; 3135 Fields[6].Str = Flag; 3136 Fields[7].Str = Align; 3137 for (auto Field : Fields) 3138 printField(Field); 3139 if (Phdr.p_type == ELF::PT_INTERP) { 3140 OS << "\n [Requesting program interpreter: "; 3141 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 3142 } 3143 OS << "\n"; 3144 } 3145 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 3146 int Phnum = 0; 3147 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3148 std::string Sections; 3149 OS << format(" %2.2d ", Phnum++); 3150 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3151 // Check if each section is in a segment and then print mapping. 3152 // readelf additionally makes sure it does not print zero sized sections 3153 // at end of segments and for PT_DYNAMIC both start and end of section 3154 // .tbss must only be shown in PT_TLS section. 3155 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 3156 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 3157 Phdr.p_type != ELF::PT_TLS; 3158 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 3159 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 3160 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 3161 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 3162 } 3163 OS << Sections << "\n"; 3164 OS.flush(); 3165 } 3166 } 3167 3168 template <class ELFT> 3169 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 3170 bool IsRela) { 3171 SmallString<32> RelocName; 3172 StringRef SymbolName; 3173 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3174 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3175 // First two fields are bit width dependent. The rest of them are after are 3176 // fixed width. 3177 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3178 3179 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 3180 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3181 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3182 SymbolName = 3183 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3184 std::string Addend, Info, Offset, Value; 3185 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 3186 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 3187 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3188 int64_t RelAddend = R.r_addend; 3189 if (!SymbolName.empty() && IsRela) { 3190 if (R.r_addend < 0) 3191 Addend = " - "; 3192 else 3193 Addend = " + "; 3194 } 3195 3196 if (SymbolName.empty() && Sym->getValue() == 0) 3197 Value = ""; 3198 3199 if (IsRela) 3200 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 3201 3202 3203 Fields[0].Str = Offset; 3204 Fields[1].Str = Info; 3205 Fields[2].Str = RelocName.c_str(); 3206 Fields[3].Str = Value; 3207 Fields[4].Str = SymbolName; 3208 for (auto &Field : Fields) 3209 printField(Field); 3210 OS << Addend; 3211 OS << "\n"; 3212 } 3213 3214 template <class ELFT> 3215 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3216 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3217 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3218 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3219 if (DynRelaRegion.Size > 0) { 3220 OS << "\n'RELA' relocation section at offset " 3221 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3222 Obj->base(), 3223 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3224 printRelocHeader(OS, ELFT::Is64Bits, true); 3225 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3226 printDynamicRelocation(Obj, Rela, true); 3227 } 3228 if (DynRelRegion.Size > 0) { 3229 OS << "\n'REL' relocation section at offset " 3230 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3231 Obj->base(), 3232 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3233 printRelocHeader(OS, ELFT::Is64Bits, false); 3234 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3235 Elf_Rela Rela; 3236 Rela.r_offset = Rel.r_offset; 3237 Rela.r_info = Rel.r_info; 3238 Rela.r_addend = 0; 3239 printDynamicRelocation(Obj, Rela, false); 3240 } 3241 } 3242 if (DynPLTRelRegion.Size) { 3243 OS << "\n'PLT' relocation section at offset " 3244 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3245 Obj->base(), 3246 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3247 } 3248 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3249 printRelocHeader(OS, ELFT::Is64Bits, true); 3250 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3251 printDynamicRelocation(Obj, Rela, true); 3252 } else { 3253 printRelocHeader(OS, ELFT::Is64Bits, false); 3254 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3255 Elf_Rela Rela; 3256 Rela.r_offset = Rel.r_offset; 3257 Rela.r_info = Rel.r_info; 3258 Rela.r_addend = 0; 3259 printDynamicRelocation(Obj, Rela, false); 3260 } 3261 } 3262 } 3263 3264 // Hash histogram shows statistics of how efficient the hash was for the 3265 // dynamic symbol table. The table shows number of hash buckets for different 3266 // lengths of chains as absolute number and percentage of the total buckets. 3267 // Additionally cumulative coverage of symbols for each set of buckets. 3268 template <class ELFT> 3269 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3270 3271 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3272 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3273 3274 // Print histogram for .hash section 3275 if (HashTable) { 3276 size_t NBucket = HashTable->nbucket; 3277 size_t NChain = HashTable->nchain; 3278 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3279 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3280 size_t TotalSyms = 0; 3281 // If hash table is correct, we have at least chains with 0 length 3282 size_t MaxChain = 1; 3283 size_t CumulativeNonZero = 0; 3284 3285 if (NChain == 0 || NBucket == 0) 3286 return; 3287 3288 std::vector<size_t> ChainLen(NBucket, 0); 3289 // Go over all buckets and and note chain lengths of each bucket (total 3290 // unique chain lengths). 3291 for (size_t B = 0; B < NBucket; B++) { 3292 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3293 if (MaxChain <= ++ChainLen[B]) 3294 MaxChain++; 3295 TotalSyms += ChainLen[B]; 3296 } 3297 3298 if (!TotalSyms) 3299 return; 3300 3301 std::vector<size_t> Count(MaxChain, 0) ; 3302 // Count how long is the chain for each bucket 3303 for (size_t B = 0; B < NBucket; B++) 3304 ++Count[ChainLen[B]]; 3305 // Print Number of buckets with each chain lengths and their cumulative 3306 // coverage of the symbols 3307 OS << "Histogram for bucket list length (total of " << NBucket 3308 << " buckets)\n" 3309 << " Length Number % of total Coverage\n"; 3310 for (size_t I = 0; I < MaxChain; I++) { 3311 CumulativeNonZero += Count[I] * I; 3312 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3313 (Count[I] * 100.0) / NBucket, 3314 (CumulativeNonZero * 100.0) / TotalSyms); 3315 } 3316 } 3317 3318 // Print histogram for .gnu.hash section 3319 if (GnuHashTable) { 3320 size_t NBucket = GnuHashTable->nbuckets; 3321 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3322 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3323 if (!NumSyms) 3324 return; 3325 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3326 size_t Symndx = GnuHashTable->symndx; 3327 size_t TotalSyms = 0; 3328 size_t MaxChain = 1; 3329 size_t CumulativeNonZero = 0; 3330 3331 if (Chains.empty() || NBucket == 0) 3332 return; 3333 3334 std::vector<size_t> ChainLen(NBucket, 0); 3335 3336 for (size_t B = 0; B < NBucket; B++) { 3337 if (!Buckets[B]) 3338 continue; 3339 size_t Len = 1; 3340 for (size_t C = Buckets[B] - Symndx; 3341 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3342 if (MaxChain < ++Len) 3343 MaxChain++; 3344 ChainLen[B] = Len; 3345 TotalSyms += Len; 3346 } 3347 MaxChain++; 3348 3349 if (!TotalSyms) 3350 return; 3351 3352 std::vector<size_t> Count(MaxChain, 0) ; 3353 for (size_t B = 0; B < NBucket; B++) 3354 ++Count[ChainLen[B]]; 3355 // Print Number of buckets with each chain lengths and their cumulative 3356 // coverage of the symbols 3357 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3358 << " buckets)\n" 3359 << " Length Number % of total Coverage\n"; 3360 for (size_t I = 0; I <MaxChain; I++) { 3361 CumulativeNonZero += Count[I] * I; 3362 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3363 (Count[I] * 100.0) / NBucket, 3364 (CumulativeNonZero * 100.0) / TotalSyms); 3365 } 3366 } 3367 } 3368 3369 static std::string getGNUNoteTypeName(const uint32_t NT) { 3370 static const struct { 3371 uint32_t ID; 3372 const char *Name; 3373 } Notes[] = { 3374 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 3375 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 3376 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 3377 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 3378 }; 3379 3380 for (const auto &Note : Notes) 3381 if (Note.ID == NT) 3382 return std::string(Note.Name); 3383 3384 std::string string; 3385 raw_string_ostream OS(string); 3386 OS << format("Unknown note type (0x%08x)", NT); 3387 return OS.str(); 3388 } 3389 3390 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 3391 static const struct { 3392 uint32_t ID; 3393 const char *Name; 3394 } Notes[] = { 3395 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 3396 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 3397 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 3398 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 3399 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 3400 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 3401 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 3402 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 3403 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 3404 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 3405 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 3406 }; 3407 3408 for (const auto &Note : Notes) 3409 if (Note.ID == NT) 3410 return std::string(Note.Name); 3411 3412 std::string string; 3413 raw_string_ostream OS(string); 3414 OS << format("Unknown note type (0x%08x)", NT); 3415 return OS.str(); 3416 } 3417 3418 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 3419 static const struct { 3420 uint32_t ID; 3421 const char *Name; 3422 } Notes[] = { 3423 {ELF::NT_AMD_AMDGPU_HSA_METADATA, 3424 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 3425 {ELF::NT_AMD_AMDGPU_ISA, 3426 "NT_AMD_AMDGPU_ISA (ISA Version)"}, 3427 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 3428 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"} 3429 }; 3430 3431 for (const auto &Note : Notes) 3432 if (Note.ID == NT) 3433 return std::string(Note.Name); 3434 3435 std::string string; 3436 raw_string_ostream OS(string); 3437 OS << format("Unknown note type (0x%08x)", NT); 3438 return OS.str(); 3439 } 3440 3441 template <typename ELFT> 3442 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 3443 ArrayRef<typename ELFFile<ELFT>::Elf_Word> Words, 3444 size_t Size) { 3445 switch (NoteType) { 3446 default: 3447 return; 3448 case ELF::NT_GNU_ABI_TAG: { 3449 static const char *OSNames[] = { 3450 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 3451 }; 3452 3453 StringRef OSName = "Unknown"; 3454 if (Words[0] < array_lengthof(OSNames)) 3455 OSName = OSNames[Words[0]]; 3456 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 3457 3458 if (Words.size() < 4) 3459 OS << " <corrupt GNU_ABI_TAG>"; 3460 else 3461 OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "." 3462 << Patch; 3463 break; 3464 } 3465 case ELF::NT_GNU_BUILD_ID: { 3466 OS << " Build ID: "; 3467 ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size); 3468 for (const auto &B : ID) 3469 OS << format_hex_no_prefix(B, 2); 3470 break; 3471 } 3472 case ELF::NT_GNU_GOLD_VERSION: 3473 OS << " Version: " 3474 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3475 break; 3476 } 3477 3478 OS << '\n'; 3479 } 3480 3481 template <typename ELFT> 3482 static void printAMDGPUNote(raw_ostream &OS, uint32_t NoteType, 3483 ArrayRef<typename ELFFile<ELFT>::Elf_Word> Words, 3484 size_t Size) { 3485 switch (NoteType) { 3486 default: 3487 return; 3488 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 3489 OS << " HSA Metadata:\n" 3490 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3491 break; 3492 case ELF::NT_AMD_AMDGPU_ISA: 3493 OS << " ISA Version:\n" 3494 << " " 3495 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3496 break; 3497 case ELF::NT_AMD_AMDGPU_PAL_METADATA: 3498 const uint32_t *PALMetadataBegin = reinterpret_cast<const uint32_t *>(Words.data()); 3499 const uint32_t *PALMetadataEnd = PALMetadataBegin + Size; 3500 std::vector<uint32_t> PALMetadata(PALMetadataBegin, PALMetadataEnd); 3501 std::string PALMetadataString; 3502 auto Error = AMDGPU::PALMD::toString(PALMetadata, PALMetadataString); 3503 OS << " PAL Metadata:\n"; 3504 if (Error) { 3505 OS << " Invalid"; 3506 return; 3507 } 3508 OS << PALMetadataString; 3509 break; 3510 } 3511 OS.flush(); 3512 } 3513 3514 template <class ELFT> 3515 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3516 const Elf_Ehdr *e = Obj->getHeader(); 3517 bool IsCore = e->e_type == ELF::ET_CORE; 3518 3519 auto process = [&](const typename ELFFile<ELFT>::Elf_Off Offset, 3520 const typename ELFFile<ELFT>::Elf_Addr Size) { 3521 if (Size <= 0) 3522 return; 3523 3524 const auto *P = static_cast<const uint8_t *>(Obj->base() + Offset); 3525 const auto *E = P + Size; 3526 3527 OS << "Displaying notes found at file offset " << format_hex(Offset, 10) 3528 << " with length " << format_hex(Size, 10) << ":\n" 3529 << " Owner Data size\tDescription\n"; 3530 3531 while (P < E) { 3532 const Elf_Word *Words = reinterpret_cast<const Elf_Word *>(&P[0]); 3533 3534 uint32_t NameSize = Words[0]; 3535 uint32_t DescriptorSize = Words[1]; 3536 uint32_t Type = Words[2]; 3537 3538 ArrayRef<Elf_Word> Descriptor(&Words[3 + (alignTo<4>(NameSize) / 4)], 3539 alignTo<4>(DescriptorSize) / 4); 3540 3541 StringRef Name; 3542 if (NameSize) 3543 Name = 3544 StringRef(reinterpret_cast<const char *>(&Words[3]), NameSize - 1); 3545 3546 OS << " " << Name << std::string(22 - NameSize, ' ') 3547 << format_hex(DescriptorSize, 10) << '\t'; 3548 3549 if (Name == "GNU") { 3550 OS << getGNUNoteTypeName(Type) << '\n'; 3551 printGNUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3552 } else if (Name == "FreeBSD") { 3553 OS << getFreeBSDNoteTypeName(Type) << '\n'; 3554 } else if (Name == "AMD") { 3555 OS << getAMDGPUNoteTypeName(Type) << '\n'; 3556 printAMDGPUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3557 } else { 3558 OS << "Unknown note type: (" << format_hex(Type, 10) << ')'; 3559 } 3560 OS << '\n'; 3561 3562 P = P + 3 * sizeof(Elf_Word) + alignTo<4>(NameSize) + 3563 alignTo<4>(DescriptorSize); 3564 } 3565 }; 3566 3567 if (IsCore) { 3568 for (const auto &P : unwrapOrError(Obj->program_headers())) 3569 if (P.p_type == PT_NOTE) 3570 process(P.p_offset, P.p_filesz); 3571 } else { 3572 for (const auto &S : unwrapOrError(Obj->sections())) 3573 if (S.sh_type == SHT_NOTE) 3574 process(S.sh_offset, S.sh_size); 3575 } 3576 } 3577 3578 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3579 const Elf_Ehdr *e = Obj->getHeader(); 3580 { 3581 DictScope D(W, "ElfHeader"); 3582 { 3583 DictScope D(W, "Ident"); 3584 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3585 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3586 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3587 makeArrayRef(ElfDataEncoding)); 3588 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3589 3590 auto OSABI = makeArrayRef(ElfOSABI); 3591 if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 3592 e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 3593 switch (e->e_machine) { 3594 case ELF::EM_AMDGPU: 3595 OSABI = makeArrayRef(AMDGPUElfOSABI); 3596 break; 3597 case ELF::EM_ARM: 3598 OSABI = makeArrayRef(ARMElfOSABI); 3599 break; 3600 case ELF::EM_TI_C6000: 3601 OSABI = makeArrayRef(C6000ElfOSABI); 3602 break; 3603 } 3604 } 3605 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI); 3606 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3607 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3608 } 3609 3610 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3611 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3612 W.printNumber("Version", e->e_version); 3613 W.printHex("Entry", e->e_entry); 3614 W.printHex("ProgramHeaderOffset", e->e_phoff); 3615 W.printHex("SectionHeaderOffset", e->e_shoff); 3616 if (e->e_machine == EM_MIPS) 3617 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3618 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3619 unsigned(ELF::EF_MIPS_MACH)); 3620 else if (e->e_machine == EM_AMDGPU) 3621 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 3622 unsigned(ELF::EF_AMDGPU_ARCH)); 3623 else if (e->e_machine == EM_RISCV) 3624 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3625 else 3626 W.printFlags("Flags", e->e_flags); 3627 W.printNumber("HeaderSize", e->e_ehsize); 3628 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3629 W.printNumber("ProgramHeaderCount", e->e_phnum); 3630 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3631 W.printNumber("SectionHeaderCount", e->e_shnum); 3632 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3633 } 3634 } 3635 3636 template <class ELFT> 3637 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3638 DictScope Lists(W, "Groups"); 3639 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 3640 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3641 for (const GroupSection &G : V) { 3642 DictScope D(W, "Group"); 3643 W.printNumber("Name", G.Name, G.ShName); 3644 W.printNumber("Index", G.Index); 3645 W.printHex("Type", getGroupType(G.Type), G.Type); 3646 W.startLine() << "Signature: " << G.Signature << "\n"; 3647 3648 ListScope L(W, "Section(s) in group"); 3649 for (const GroupMember &GM : G.Members) { 3650 const GroupSection *MainGroup = Map[GM.Index]; 3651 if (MainGroup != &G) { 3652 W.flush(); 3653 errs() << "Error: " << GM.Name << " (" << GM.Index 3654 << ") in a group " + G.Name + " (" << G.Index 3655 << ") is already in a group " + MainGroup->Name + " (" 3656 << MainGroup->Index << ")\n"; 3657 errs().flush(); 3658 continue; 3659 } 3660 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 3661 } 3662 } 3663 3664 if (V.empty()) 3665 W.startLine() << "There are no group sections in the file.\n"; 3666 } 3667 3668 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3669 ListScope D(W, "Relocations"); 3670 3671 int SectionNumber = -1; 3672 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3673 ++SectionNumber; 3674 3675 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3676 Sec.sh_type != ELF::SHT_ANDROID_REL && 3677 Sec.sh_type != ELF::SHT_ANDROID_RELA) 3678 continue; 3679 3680 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3681 3682 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3683 W.indent(); 3684 3685 printRelocations(&Sec, Obj); 3686 3687 W.unindent(); 3688 W.startLine() << "}\n"; 3689 } 3690 } 3691 3692 template <class ELFT> 3693 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3694 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3695 3696 switch (Sec->sh_type) { 3697 case ELF::SHT_REL: 3698 for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) { 3699 Elf_Rela Rela; 3700 Rela.r_offset = R.r_offset; 3701 Rela.r_info = R.r_info; 3702 Rela.r_addend = 0; 3703 printRelocation(Obj, Rela, SymTab); 3704 } 3705 break; 3706 case ELF::SHT_RELA: 3707 for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec))) 3708 printRelocation(Obj, R, SymTab); 3709 break; 3710 case ELF::SHT_ANDROID_REL: 3711 case ELF::SHT_ANDROID_RELA: 3712 for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec))) 3713 printRelocation(Obj, R, SymTab); 3714 break; 3715 } 3716 } 3717 3718 template <class ELFT> 3719 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3720 const Elf_Shdr *SymTab) { 3721 SmallString<32> RelocName; 3722 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3723 StringRef TargetName; 3724 const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab)); 3725 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3726 const Elf_Shdr *Sec = unwrapOrError( 3727 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3728 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3729 } else if (Sym) { 3730 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3731 TargetName = unwrapOrError(Sym->getName(StrTable)); 3732 } 3733 3734 if (opts::ExpandRelocs) { 3735 DictScope Group(W, "Relocation"); 3736 W.printHex("Offset", Rel.r_offset); 3737 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3738 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 3739 Rel.getSymbol(Obj->isMips64EL())); 3740 W.printHex("Addend", Rel.r_addend); 3741 } else { 3742 raw_ostream &OS = W.startLine(); 3743 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3744 << (!TargetName.empty() ? TargetName : "-") << " " 3745 << W.hex(Rel.r_addend) << "\n"; 3746 } 3747 } 3748 3749 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3750 ListScope SectionsD(W, "Sections"); 3751 3752 int SectionIndex = -1; 3753 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3754 ++SectionIndex; 3755 3756 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3757 3758 DictScope SectionD(W, "Section"); 3759 W.printNumber("Index", SectionIndex); 3760 W.printNumber("Name", Name, Sec.sh_name); 3761 W.printHex( 3762 "Type", 3763 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 3764 Sec.sh_type); 3765 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3766 std::end(ElfSectionFlags)); 3767 switch (Obj->getHeader()->e_machine) { 3768 case EM_ARM: 3769 SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags), 3770 std::end(ElfARMSectionFlags)); 3771 break; 3772 case EM_HEXAGON: 3773 SectionFlags.insert(SectionFlags.end(), 3774 std::begin(ElfHexagonSectionFlags), 3775 std::end(ElfHexagonSectionFlags)); 3776 break; 3777 case EM_MIPS: 3778 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3779 std::end(ElfMipsSectionFlags)); 3780 break; 3781 case EM_X86_64: 3782 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3783 std::end(ElfX86_64SectionFlags)); 3784 break; 3785 case EM_XCORE: 3786 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3787 std::end(ElfXCoreSectionFlags)); 3788 break; 3789 default: 3790 // Nothing to do. 3791 break; 3792 } 3793 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3794 W.printHex("Address", Sec.sh_addr); 3795 W.printHex("Offset", Sec.sh_offset); 3796 W.printNumber("Size", Sec.sh_size); 3797 W.printNumber("Link", Sec.sh_link); 3798 W.printNumber("Info", Sec.sh_info); 3799 W.printNumber("AddressAlignment", Sec.sh_addralign); 3800 W.printNumber("EntrySize", Sec.sh_entsize); 3801 3802 if (opts::SectionRelocations) { 3803 ListScope D(W, "Relocations"); 3804 printRelocations(&Sec, Obj); 3805 } 3806 3807 if (opts::SectionSymbols) { 3808 ListScope D(W, "Symbols"); 3809 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3810 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3811 3812 for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) { 3813 const Elf_Shdr *SymSec = unwrapOrError( 3814 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3815 if (SymSec == &Sec) 3816 printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(), 3817 StrTable, false); 3818 } 3819 } 3820 3821 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3822 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3823 W.printBinaryBlock("SectionData", 3824 StringRef((const char *)Data.data(), Data.size())); 3825 } 3826 } 3827 } 3828 3829 template <class ELFT> 3830 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3831 const Elf_Sym *First, StringRef StrTable, 3832 bool IsDynamic) { 3833 unsigned SectionIndex = 0; 3834 StringRef SectionName; 3835 getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(), 3836 SectionName, SectionIndex); 3837 std::string FullSymbolName = 3838 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3839 unsigned char SymbolType = Symbol->getType(); 3840 3841 DictScope D(W, "Symbol"); 3842 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3843 W.printHex("Value", Symbol->st_value); 3844 W.printNumber("Size", Symbol->st_size); 3845 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3846 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3847 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3848 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3849 else 3850 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3851 if (Symbol->st_other == 0) 3852 // Usually st_other flag is zero. Do not pollute the output 3853 // by flags enumeration in that case. 3854 W.printNumber("Other", 0); 3855 else { 3856 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3857 std::end(ElfSymOtherFlags)); 3858 if (Obj->getHeader()->e_machine == EM_MIPS) { 3859 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3860 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3861 // cases separately. 3862 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3863 SymOtherFlags.insert(SymOtherFlags.end(), 3864 std::begin(ElfMips16SymOtherFlags), 3865 std::end(ElfMips16SymOtherFlags)); 3866 else 3867 SymOtherFlags.insert(SymOtherFlags.end(), 3868 std::begin(ElfMipsSymOtherFlags), 3869 std::end(ElfMipsSymOtherFlags)); 3870 } 3871 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3872 } 3873 W.printHex("Section", SectionName, SectionIndex); 3874 } 3875 3876 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3877 ListScope Group(W, "Symbols"); 3878 this->dumper()->printSymbolsHelper(false); 3879 } 3880 3881 template <class ELFT> 3882 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3883 ListScope Group(W, "DynamicSymbols"); 3884 this->dumper()->printSymbolsHelper(true); 3885 } 3886 3887 template <class ELFT> 3888 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3889 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3890 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3891 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3892 if (DynRelRegion.Size && DynRelaRegion.Size) 3893 report_fatal_error("There are both REL and RELA dynamic relocations"); 3894 W.startLine() << "Dynamic Relocations {\n"; 3895 W.indent(); 3896 if (DynRelaRegion.Size > 0) 3897 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3898 printDynamicRelocation(Obj, Rela); 3899 else 3900 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3901 Elf_Rela Rela; 3902 Rela.r_offset = Rel.r_offset; 3903 Rela.r_info = Rel.r_info; 3904 Rela.r_addend = 0; 3905 printDynamicRelocation(Obj, Rela); 3906 } 3907 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3908 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3909 printDynamicRelocation(Obj, Rela); 3910 else 3911 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3912 Elf_Rela Rela; 3913 Rela.r_offset = Rel.r_offset; 3914 Rela.r_info = Rel.r_info; 3915 Rela.r_addend = 0; 3916 printDynamicRelocation(Obj, Rela); 3917 } 3918 W.unindent(); 3919 W.startLine() << "}\n"; 3920 } 3921 3922 template <class ELFT> 3923 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 3924 SmallString<32> RelocName; 3925 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3926 StringRef SymbolName; 3927 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 3928 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3929 SymbolName = 3930 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3931 if (opts::ExpandRelocs) { 3932 DictScope Group(W, "Relocation"); 3933 W.printHex("Offset", Rel.r_offset); 3934 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3935 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 3936 W.printHex("Addend", Rel.r_addend); 3937 } else { 3938 raw_ostream &OS = W.startLine(); 3939 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3940 << (!SymbolName.empty() ? SymbolName : "-") << " " 3941 << W.hex(Rel.r_addend) << "\n"; 3942 } 3943 } 3944 3945 template <class ELFT> 3946 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3947 ListScope L(W, "ProgramHeaders"); 3948 3949 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3950 DictScope P(W, "ProgramHeader"); 3951 W.printHex("Type", 3952 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 3953 Phdr.p_type); 3954 W.printHex("Offset", Phdr.p_offset); 3955 W.printHex("VirtualAddress", Phdr.p_vaddr); 3956 W.printHex("PhysicalAddress", Phdr.p_paddr); 3957 W.printNumber("FileSize", Phdr.p_filesz); 3958 W.printNumber("MemSize", Phdr.p_memsz); 3959 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 3960 W.printNumber("Alignment", Phdr.p_align); 3961 } 3962 } 3963 3964 template <class ELFT> 3965 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3966 W.startLine() << "Hash Histogram not implemented!\n"; 3967 } 3968 3969 template <class ELFT> 3970 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3971 W.startLine() << "printNotes not implemented!\n"; 3972 } 3973