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 break; 1326 case ELF::SHT_SYMTAB_SHNDX: 1327 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1328 break; 1329 case ELF::SHT_GNU_versym: 1330 if (dot_gnu_version_sec != nullptr) 1331 reportError("Multiple SHT_GNU_versym"); 1332 dot_gnu_version_sec = &Sec; 1333 break; 1334 case ELF::SHT_GNU_verdef: 1335 if (dot_gnu_version_d_sec != nullptr) 1336 reportError("Multiple SHT_GNU_verdef"); 1337 dot_gnu_version_d_sec = &Sec; 1338 break; 1339 case ELF::SHT_GNU_verneed: 1340 if (dot_gnu_version_r_sec != nullptr) 1341 reportError("Multiple SHT_GNU_verneed"); 1342 dot_gnu_version_r_sec = &Sec; 1343 break; 1344 } 1345 } 1346 1347 parseDynamicTable(LoadSegments); 1348 1349 if (opts::Output == opts::GNU) 1350 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1351 else 1352 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1353 } 1354 1355 template <typename ELFT> 1356 void ELFDumper<ELFT>::parseDynamicTable( 1357 ArrayRef<const Elf_Phdr *> LoadSegments) { 1358 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1359 const Elf_Phdr *const *I = 1360 std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr, 1361 [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) { 1362 return VAddr < Phdr->p_vaddr; 1363 }); 1364 if (I == LoadSegments.begin()) 1365 report_fatal_error("Virtual address is not in any segment"); 1366 --I; 1367 const Elf_Phdr &Phdr = **I; 1368 uint64_t Delta = VAddr - Phdr.p_vaddr; 1369 if (Delta >= Phdr.p_filesz) 1370 report_fatal_error("Virtual address is not in any segment"); 1371 return Obj->base() + Phdr.p_offset + Delta; 1372 }; 1373 1374 uint64_t SONameOffset = 0; 1375 const char *StringTableBegin = nullptr; 1376 uint64_t StringTableSize = 0; 1377 for (const Elf_Dyn &Dyn : dynamic_table()) { 1378 switch (Dyn.d_tag) { 1379 case ELF::DT_HASH: 1380 HashTable = 1381 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1382 break; 1383 case ELF::DT_GNU_HASH: 1384 GnuHashTable = 1385 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1386 break; 1387 case ELF::DT_STRTAB: 1388 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1389 break; 1390 case ELF::DT_STRSZ: 1391 StringTableSize = Dyn.getVal(); 1392 break; 1393 case ELF::DT_SYMTAB: 1394 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1395 DynSymRegion.EntSize = sizeof(Elf_Sym); 1396 break; 1397 case ELF::DT_RELA: 1398 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1399 break; 1400 case ELF::DT_RELASZ: 1401 DynRelaRegion.Size = Dyn.getVal(); 1402 break; 1403 case ELF::DT_RELAENT: 1404 DynRelaRegion.EntSize = Dyn.getVal(); 1405 break; 1406 case ELF::DT_SONAME: 1407 SONameOffset = Dyn.getVal(); 1408 break; 1409 case ELF::DT_REL: 1410 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1411 break; 1412 case ELF::DT_RELSZ: 1413 DynRelRegion.Size = Dyn.getVal(); 1414 break; 1415 case ELF::DT_RELENT: 1416 DynRelRegion.EntSize = Dyn.getVal(); 1417 break; 1418 case ELF::DT_PLTREL: 1419 if (Dyn.getVal() == DT_REL) 1420 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1421 else if (Dyn.getVal() == DT_RELA) 1422 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1423 else 1424 reportError(Twine("unknown DT_PLTREL value of ") + 1425 Twine((uint64_t)Dyn.getVal())); 1426 break; 1427 case ELF::DT_JMPREL: 1428 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1429 break; 1430 case ELF::DT_PLTRELSZ: 1431 DynPLTRelRegion.Size = Dyn.getVal(); 1432 break; 1433 } 1434 } 1435 if (StringTableBegin) 1436 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1437 if (SONameOffset) 1438 SOName = getDynamicString(SONameOffset); 1439 } 1440 1441 template <typename ELFT> 1442 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1443 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1444 } 1445 1446 template <typename ELFT> 1447 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1448 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1449 } 1450 1451 template<class ELFT> 1452 void ELFDumper<ELFT>::printFileHeaders() { 1453 ELFDumperStyle->printFileHeaders(Obj); 1454 } 1455 1456 template<class ELFT> 1457 void ELFDumper<ELFT>::printSections() { 1458 ELFDumperStyle->printSections(Obj); 1459 } 1460 1461 template<class ELFT> 1462 void ELFDumper<ELFT>::printRelocations() { 1463 ELFDumperStyle->printRelocations(Obj); 1464 } 1465 1466 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1467 ELFDumperStyle->printProgramHeaders(Obj); 1468 } 1469 1470 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1471 ELFDumperStyle->printDynamicRelocations(Obj); 1472 } 1473 1474 template<class ELFT> 1475 void ELFDumper<ELFT>::printSymbols() { 1476 ELFDumperStyle->printSymbols(Obj); 1477 } 1478 1479 template<class ELFT> 1480 void ELFDumper<ELFT>::printDynamicSymbols() { 1481 ELFDumperStyle->printDynamicSymbols(Obj); 1482 } 1483 1484 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1485 ELFDumperStyle->printHashHistogram(Obj); 1486 } 1487 1488 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 1489 ELFDumperStyle->printNotes(Obj); 1490 } 1491 1492 #define LLVM_READOBJ_TYPE_CASE(name) \ 1493 case DT_##name: return #name 1494 1495 static const char *getTypeString(unsigned Arch, uint64_t Type) { 1496 switch (Arch) { 1497 case EM_HEXAGON: 1498 switch (Type) { 1499 LLVM_READOBJ_TYPE_CASE(HEXAGON_SYMSZ); 1500 LLVM_READOBJ_TYPE_CASE(HEXAGON_VER); 1501 LLVM_READOBJ_TYPE_CASE(HEXAGON_PLT); 1502 } 1503 case EM_MIPS: 1504 switch (Type) { 1505 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1506 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1507 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1508 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1509 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1510 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1511 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1512 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1513 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1514 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1515 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1516 } 1517 } 1518 switch (Type) { 1519 LLVM_READOBJ_TYPE_CASE(ANDROID_REL); 1520 LLVM_READOBJ_TYPE_CASE(ANDROID_RELSZ); 1521 LLVM_READOBJ_TYPE_CASE(ANDROID_RELA); 1522 LLVM_READOBJ_TYPE_CASE(ANDROID_RELASZ); 1523 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1524 LLVM_READOBJ_TYPE_CASE(DEBUG); 1525 LLVM_READOBJ_TYPE_CASE(FINI); 1526 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1527 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1528 LLVM_READOBJ_TYPE_CASE(FLAGS); 1529 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1530 LLVM_READOBJ_TYPE_CASE(HASH); 1531 LLVM_READOBJ_TYPE_CASE(INIT); 1532 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1533 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1534 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1535 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1536 LLVM_READOBJ_TYPE_CASE(JMPREL); 1537 LLVM_READOBJ_TYPE_CASE(NEEDED); 1538 LLVM_READOBJ_TYPE_CASE(NULL); 1539 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1540 LLVM_READOBJ_TYPE_CASE(PLTREL); 1541 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1542 LLVM_READOBJ_TYPE_CASE(REL); 1543 LLVM_READOBJ_TYPE_CASE(RELA); 1544 LLVM_READOBJ_TYPE_CASE(RELENT); 1545 LLVM_READOBJ_TYPE_CASE(RELSZ); 1546 LLVM_READOBJ_TYPE_CASE(RELAENT); 1547 LLVM_READOBJ_TYPE_CASE(RELASZ); 1548 LLVM_READOBJ_TYPE_CASE(RPATH); 1549 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1550 LLVM_READOBJ_TYPE_CASE(SONAME); 1551 LLVM_READOBJ_TYPE_CASE(STRSZ); 1552 LLVM_READOBJ_TYPE_CASE(STRTAB); 1553 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1554 LLVM_READOBJ_TYPE_CASE(SYMENT); 1555 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1556 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1557 LLVM_READOBJ_TYPE_CASE(VERDEF); 1558 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1559 LLVM_READOBJ_TYPE_CASE(VERNEED); 1560 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1561 LLVM_READOBJ_TYPE_CASE(VERSYM); 1562 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1563 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1564 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1565 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1566 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1567 LLVM_READOBJ_TYPE_CASE(AUXILIARY); 1568 LLVM_READOBJ_TYPE_CASE(FILTER); 1569 default: return "unknown"; 1570 } 1571 } 1572 1573 #undef LLVM_READOBJ_TYPE_CASE 1574 1575 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1576 { #enum, prefix##_##enum } 1577 1578 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1579 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1580 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1581 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1582 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1583 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1584 }; 1585 1586 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1587 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1588 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1589 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1590 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1591 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1592 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1593 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1594 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1595 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1596 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1597 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1598 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1599 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1600 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1601 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1602 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1603 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1604 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1605 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1606 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1607 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1608 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1609 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1610 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1611 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1612 }; 1613 1614 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1615 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1616 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1617 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1618 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1619 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1620 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1621 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1622 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1623 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1624 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1625 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1626 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1627 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1628 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1629 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1630 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1631 }; 1632 1633 #undef LLVM_READOBJ_DT_FLAG_ENT 1634 1635 template <typename T, typename TFlag> 1636 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1637 using FlagEntry = EnumEntry<TFlag>; 1638 using FlagVector = SmallVector<FlagEntry, 10>; 1639 FlagVector SetFlags; 1640 1641 for (const auto &Flag : Flags) { 1642 if (Flag.Value == 0) 1643 continue; 1644 1645 if ((Value & Flag.Value) == Flag.Value) 1646 SetFlags.push_back(Flag); 1647 } 1648 1649 for (const auto &Flag : SetFlags) { 1650 OS << Flag.Name << " "; 1651 } 1652 } 1653 1654 template <class ELFT> 1655 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1656 if (Value >= DynamicStringTable.size()) 1657 reportError("Invalid dynamic string table reference"); 1658 return StringRef(DynamicStringTable.data() + Value); 1659 } 1660 1661 static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) { 1662 OS << Tag << ": [" << Name << "]"; 1663 } 1664 1665 template <class ELFT> 1666 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1667 raw_ostream &OS = W.getOStream(); 1668 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1669 switch (Type) { 1670 case DT_PLTREL: 1671 if (Value == DT_REL) { 1672 OS << "REL"; 1673 break; 1674 } else if (Value == DT_RELA) { 1675 OS << "RELA"; 1676 break; 1677 } 1678 LLVM_FALLTHROUGH; 1679 case DT_PLTGOT: 1680 case DT_HASH: 1681 case DT_STRTAB: 1682 case DT_SYMTAB: 1683 case DT_RELA: 1684 case DT_INIT: 1685 case DT_FINI: 1686 case DT_REL: 1687 case DT_JMPREL: 1688 case DT_INIT_ARRAY: 1689 case DT_FINI_ARRAY: 1690 case DT_PREINIT_ARRAY: 1691 case DT_DEBUG: 1692 case DT_VERDEF: 1693 case DT_VERNEED: 1694 case DT_VERSYM: 1695 case DT_GNU_HASH: 1696 case DT_NULL: 1697 case DT_MIPS_BASE_ADDRESS: 1698 case DT_MIPS_GOTSYM: 1699 case DT_MIPS_RLD_MAP: 1700 case DT_MIPS_RLD_MAP_REL: 1701 case DT_MIPS_PLTGOT: 1702 case DT_MIPS_OPTIONS: 1703 OS << format(ConvChar, Value); 1704 break; 1705 case DT_RELACOUNT: 1706 case DT_RELCOUNT: 1707 case DT_VERDEFNUM: 1708 case DT_VERNEEDNUM: 1709 case DT_MIPS_RLD_VERSION: 1710 case DT_MIPS_LOCAL_GOTNO: 1711 case DT_MIPS_SYMTABNO: 1712 case DT_MIPS_UNREFEXTNO: 1713 OS << Value; 1714 break; 1715 case DT_PLTRELSZ: 1716 case DT_RELASZ: 1717 case DT_RELAENT: 1718 case DT_STRSZ: 1719 case DT_SYMENT: 1720 case DT_RELSZ: 1721 case DT_RELENT: 1722 case DT_INIT_ARRAYSZ: 1723 case DT_FINI_ARRAYSZ: 1724 case DT_PREINIT_ARRAYSZ: 1725 case DT_ANDROID_RELSZ: 1726 case DT_ANDROID_RELASZ: 1727 OS << Value << " (bytes)"; 1728 break; 1729 case DT_NEEDED: 1730 printLibrary(OS, "Shared library", getDynamicString(Value)); 1731 break; 1732 case DT_SONAME: 1733 printLibrary(OS, "Library soname", getDynamicString(Value)); 1734 break; 1735 case DT_AUXILIARY: 1736 printLibrary(OS, "Auxiliary library", getDynamicString(Value)); 1737 break; 1738 case DT_FILTER: 1739 printLibrary(OS, "Filter library", getDynamicString(Value)); 1740 break; 1741 case DT_RPATH: 1742 case DT_RUNPATH: 1743 OS << getDynamicString(Value); 1744 break; 1745 case DT_MIPS_FLAGS: 1746 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1747 break; 1748 case DT_FLAGS: 1749 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1750 break; 1751 case DT_FLAGS_1: 1752 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1753 break; 1754 default: 1755 OS << format(ConvChar, Value); 1756 break; 1757 } 1758 } 1759 1760 template<class ELFT> 1761 void ELFDumper<ELFT>::printUnwindInfo() { 1762 W.startLine() << "UnwindInfo not implemented.\n"; 1763 } 1764 1765 namespace { 1766 1767 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1768 const unsigned Machine = Obj->getHeader()->e_machine; 1769 if (Machine == EM_ARM) { 1770 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1771 W, Obj, DotSymtabSec); 1772 return Ctx.PrintUnwindInformation(); 1773 } 1774 W.startLine() << "UnwindInfo not implemented.\n"; 1775 } 1776 1777 } // end anonymous namespace 1778 1779 template<class ELFT> 1780 void ELFDumper<ELFT>::printDynamicTable() { 1781 auto I = dynamic_table().begin(); 1782 auto E = dynamic_table().end(); 1783 1784 if (I == E) 1785 return; 1786 1787 --E; 1788 while (I != E && E->getTag() == ELF::DT_NULL) 1789 --E; 1790 if (E->getTag() != ELF::DT_NULL) 1791 ++E; 1792 ++E; 1793 1794 ptrdiff_t Total = std::distance(I, E); 1795 if (Total == 0) 1796 return; 1797 1798 raw_ostream &OS = W.getOStream(); 1799 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1800 1801 bool Is64 = ELFT::Is64Bits; 1802 1803 W.startLine() 1804 << " Tag" << (Is64 ? " " : " ") << "Type" 1805 << " " << "Name/Value\n"; 1806 while (I != E) { 1807 const Elf_Dyn &Entry = *I; 1808 uintX_t Tag = Entry.getTag(); 1809 ++I; 1810 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1811 << format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag)); 1812 printValue(Tag, Entry.getVal()); 1813 OS << "\n"; 1814 } 1815 1816 W.startLine() << "]\n"; 1817 } 1818 1819 template<class ELFT> 1820 void ELFDumper<ELFT>::printNeededLibraries() { 1821 ListScope D(W, "NeededLibraries"); 1822 1823 using LibsTy = std::vector<StringRef>; 1824 LibsTy Libs; 1825 1826 for (const auto &Entry : dynamic_table()) 1827 if (Entry.d_tag == ELF::DT_NEEDED) 1828 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1829 1830 std::stable_sort(Libs.begin(), Libs.end()); 1831 1832 for (const auto &L : Libs) { 1833 outs() << " " << L << "\n"; 1834 } 1835 } 1836 1837 1838 template <typename ELFT> 1839 void ELFDumper<ELFT>::printHashTable() { 1840 DictScope D(W, "HashTable"); 1841 if (!HashTable) 1842 return; 1843 W.printNumber("Num Buckets", HashTable->nbucket); 1844 W.printNumber("Num Chains", HashTable->nchain); 1845 W.printList("Buckets", HashTable->buckets()); 1846 W.printList("Chains", HashTable->chains()); 1847 } 1848 1849 template <typename ELFT> 1850 void ELFDumper<ELFT>::printGnuHashTable() { 1851 DictScope D(W, "GnuHashTable"); 1852 if (!GnuHashTable) 1853 return; 1854 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1855 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1856 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1857 W.printNumber("Shift Count", GnuHashTable->shift2); 1858 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1859 W.printList("Buckets", GnuHashTable->buckets()); 1860 Elf_Sym_Range Syms = dynamic_symbols(); 1861 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1862 if (!NumSyms) 1863 reportError("No dynamic symbol section"); 1864 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1865 } 1866 1867 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1868 outs() << "LoadName: " << SOName << '\n'; 1869 } 1870 1871 template <class ELFT> 1872 void ELFDumper<ELFT>::printAttributes() { 1873 W.startLine() << "Attributes not implemented.\n"; 1874 } 1875 1876 namespace { 1877 1878 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1879 if (Obj->getHeader()->e_machine != EM_ARM) { 1880 W.startLine() << "Attributes not implemented.\n"; 1881 return; 1882 } 1883 1884 DictScope BA(W, "BuildAttributes"); 1885 for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1886 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1887 continue; 1888 1889 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1890 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1891 errs() << "unrecognised FormatVersion: 0x" << utohexstr(Contents[0]) 1892 << '\n'; 1893 continue; 1894 } 1895 1896 W.printHex("FormatVersion", Contents[0]); 1897 if (Contents.size() == 1) 1898 continue; 1899 1900 ARMAttributeParser(&W).Parse(Contents, true); 1901 } 1902 } 1903 1904 template <class ELFT> class MipsGOTParser { 1905 public: 1906 TYPEDEF_ELF_TYPES(ELFT) 1907 using GOTEntry = typename ELFO::Elf_Addr; 1908 1909 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1910 Elf_Dyn_Range DynTable, ScopedPrinter &W); 1911 1912 void parseGOT(); 1913 void parsePLT(); 1914 1915 private: 1916 ELFDumper<ELFT> *Dumper; 1917 const ELFO *Obj; 1918 ScopedPrinter &W; 1919 Optional<uint64_t> DtPltGot; 1920 Optional<uint64_t> DtLocalGotNum; 1921 Optional<uint64_t> DtGotSym; 1922 Optional<uint64_t> DtMipsPltGot; 1923 Optional<uint64_t> DtJmpRel; 1924 1925 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1926 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1927 1928 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1929 const GOTEntry *It); 1930 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1931 const GOTEntry *It, const Elf_Sym *Sym, 1932 StringRef StrTable, bool IsDynamic); 1933 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1934 const GOTEntry *It, StringRef Purpose); 1935 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1936 const GOTEntry *It, StringRef StrTable, 1937 const Elf_Sym *Sym); 1938 }; 1939 1940 } // end anonymous namespace 1941 1942 template <class ELFT> 1943 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1944 Elf_Dyn_Range DynTable, ScopedPrinter &W) 1945 : Dumper(Dumper), Obj(Obj), W(W) { 1946 for (const auto &Entry : DynTable) { 1947 switch (Entry.getTag()) { 1948 case ELF::DT_PLTGOT: 1949 DtPltGot = Entry.getVal(); 1950 break; 1951 case ELF::DT_MIPS_LOCAL_GOTNO: 1952 DtLocalGotNum = Entry.getVal(); 1953 break; 1954 case ELF::DT_MIPS_GOTSYM: 1955 DtGotSym = Entry.getVal(); 1956 break; 1957 case ELF::DT_MIPS_PLTGOT: 1958 DtMipsPltGot = Entry.getVal(); 1959 break; 1960 case ELF::DT_JMPREL: 1961 DtJmpRel = Entry.getVal(); 1962 break; 1963 } 1964 } 1965 } 1966 1967 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1968 // See "Global Offset Table" in Chapter 5 in the following document 1969 // for detailed GOT description. 1970 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1971 if (!DtPltGot) { 1972 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1973 return; 1974 } 1975 if (!DtLocalGotNum) { 1976 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1977 return; 1978 } 1979 if (!DtGotSym) { 1980 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1981 return; 1982 } 1983 1984 StringRef StrTable = Dumper->getDynamicStringTable(); 1985 const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin(); 1986 const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end(); 1987 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1988 1989 if (*DtGotSym > DynSymTotal) 1990 report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols"); 1991 1992 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1993 1994 if (*DtLocalGotNum + GlobalGotNum == 0) { 1995 W.startLine() << "GOT is empty.\n"; 1996 return; 1997 } 1998 1999 const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot); 2000 if (!GOTShdr) 2001 report_fatal_error("There is no not empty GOT section at 0x" + 2002 Twine::utohexstr(*DtPltGot)); 2003 2004 ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr)); 2005 2006 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT)) 2007 report_fatal_error("Number of GOT entries exceeds the size of GOT section"); 2008 2009 const GOTEntry *GotBegin = makeGOTIter(GOT, 0); 2010 const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum); 2011 const GOTEntry *It = GotBegin; 2012 2013 DictScope GS(W, "Primary GOT"); 2014 2015 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 2016 { 2017 ListScope RS(W, "Reserved entries"); 2018 2019 { 2020 DictScope D(W, "Entry"); 2021 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 2022 W.printString("Purpose", StringRef("Lazy resolver")); 2023 } 2024 2025 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 2026 DictScope D(W, "Entry"); 2027 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 2028 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 2029 } 2030 } 2031 { 2032 ListScope LS(W, "Local entries"); 2033 for (; It != GotLocalEnd; ++It) { 2034 DictScope D(W, "Entry"); 2035 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 2036 } 2037 } 2038 { 2039 ListScope GS(W, "Global entries"); 2040 2041 const GOTEntry *GotGlobalEnd = 2042 makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum); 2043 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 2044 for (; It != GotGlobalEnd; ++It) { 2045 DictScope D(W, "Entry"); 2046 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable, 2047 true); 2048 } 2049 } 2050 2051 std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum; 2052 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 2053 } 2054 2055 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 2056 if (!DtMipsPltGot) { 2057 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 2058 return; 2059 } 2060 if (!DtJmpRel) { 2061 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 2062 return; 2063 } 2064 2065 const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2066 if (!PLTShdr) 2067 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2068 Twine::utohexstr(*DtMipsPltGot)); 2069 ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr)); 2070 2071 const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2072 if (!PLTRelShdr) 2073 report_fatal_error("There is no not empty RELPLT section at 0x" + 2074 Twine::utohexstr(*DtJmpRel)); 2075 const Elf_Shdr *SymTable = 2076 unwrapOrError(Obj->getSection(PLTRelShdr->sh_link)); 2077 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable)); 2078 2079 const GOTEntry *PLTBegin = makeGOTIter(PLT, 0); 2080 const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT)); 2081 const GOTEntry *It = PLTBegin; 2082 2083 DictScope GS(W, "PLT GOT"); 2084 { 2085 ListScope RS(W, "Reserved entries"); 2086 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 2087 if (It != PLTEnd) 2088 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 2089 } 2090 { 2091 ListScope GS(W, "Entries"); 2092 2093 switch (PLTRelShdr->sh_type) { 2094 case ELF::SHT_REL: 2095 for (const Elf_Rel &Rel : unwrapOrError(Obj->rels(PLTRelShdr))) { 2096 const Elf_Sym *Sym = 2097 unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable)); 2098 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2099 if (++It == PLTEnd) 2100 break; 2101 } 2102 break; 2103 case ELF::SHT_RELA: 2104 for (const Elf_Rela &Rel : unwrapOrError(Obj->relas(PLTRelShdr))) { 2105 const Elf_Sym *Sym = 2106 unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTable)); 2107 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2108 if (++It == PLTEnd) 2109 break; 2110 } 2111 break; 2112 } 2113 } 2114 } 2115 2116 template <class ELFT> 2117 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 2118 return GOT.size() / sizeof(GOTEntry); 2119 } 2120 2121 template <class ELFT> 2122 const typename MipsGOTParser<ELFT>::GOTEntry * 2123 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 2124 const char *Data = reinterpret_cast<const char *>(GOT.data()); 2125 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 2126 } 2127 2128 template <class ELFT> 2129 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 2130 const GOTEntry *BeginIt, 2131 const GOTEntry *It) { 2132 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2133 W.printHex("Address", GotAddr + Offset); 2134 W.printNumber("Access", Offset - 0x7ff0); 2135 W.printHex("Initial", *It); 2136 } 2137 2138 template <class ELFT> 2139 void MipsGOTParser<ELFT>::printGlobalGotEntry( 2140 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 2141 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 2142 printGotEntry(GotAddr, BeginIt, It); 2143 2144 W.printHex("Value", Sym->st_value); 2145 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2146 2147 unsigned SectionIndex = 0; 2148 StringRef SectionName; 2149 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2150 Dumper->getShndxTable(), SectionName, SectionIndex); 2151 W.printHex("Section", SectionName, SectionIndex); 2152 2153 std::string FullSymbolName = 2154 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 2155 W.printNumber("Name", FullSymbolName, Sym->st_name); 2156 } 2157 2158 template <class ELFT> 2159 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2160 const GOTEntry *BeginIt, 2161 const GOTEntry *It, StringRef Purpose) { 2162 DictScope D(W, "Entry"); 2163 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2164 W.printHex("Address", PLTAddr + Offset); 2165 W.printHex("Initial", *It); 2166 W.printString("Purpose", Purpose); 2167 } 2168 2169 template <class ELFT> 2170 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2171 const GOTEntry *BeginIt, 2172 const GOTEntry *It, StringRef StrTable, 2173 const Elf_Sym *Sym) { 2174 DictScope D(W, "Entry"); 2175 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2176 W.printHex("Address", PLTAddr + Offset); 2177 W.printHex("Initial", *It); 2178 W.printHex("Value", Sym->st_value); 2179 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2180 2181 unsigned SectionIndex = 0; 2182 StringRef SectionName; 2183 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2184 Dumper->getShndxTable(), SectionName, SectionIndex); 2185 W.printHex("Section", SectionName, SectionIndex); 2186 2187 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 2188 W.printNumber("Name", FullSymbolName, Sym->st_name); 2189 } 2190 2191 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2192 if (Obj->getHeader()->e_machine != EM_MIPS) { 2193 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2194 return; 2195 } 2196 2197 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2198 GOTParser.parseGOT(); 2199 GOTParser.parsePLT(); 2200 } 2201 2202 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2203 {"None", Mips::AFL_EXT_NONE}, 2204 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2205 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2206 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2207 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2208 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2209 {"LSI R4010", Mips::AFL_EXT_4010}, 2210 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2211 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2212 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2213 {"MIPS R4650", Mips::AFL_EXT_4650}, 2214 {"MIPS R5900", Mips::AFL_EXT_5900}, 2215 {"MIPS R10000", Mips::AFL_EXT_10000}, 2216 {"NEC VR4100", Mips::AFL_EXT_4100}, 2217 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2218 {"NEC VR4120", Mips::AFL_EXT_4120}, 2219 {"NEC VR5400", Mips::AFL_EXT_5400}, 2220 {"NEC VR5500", Mips::AFL_EXT_5500}, 2221 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2222 {"Toshiba R3900", Mips::AFL_EXT_3900} 2223 }; 2224 2225 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2226 {"DSP", Mips::AFL_ASE_DSP}, 2227 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2228 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2229 {"MCU", Mips::AFL_ASE_MCU}, 2230 {"MDMX", Mips::AFL_ASE_MDMX}, 2231 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2232 {"MT", Mips::AFL_ASE_MT}, 2233 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2234 {"VZ", Mips::AFL_ASE_VIRT}, 2235 {"MSA", Mips::AFL_ASE_MSA}, 2236 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2237 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2238 {"XPA", Mips::AFL_ASE_XPA} 2239 }; 2240 2241 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2242 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2243 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2244 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2245 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2246 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2247 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2248 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2249 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2250 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2251 Mips::Val_GNU_MIPS_ABI_FP_64A} 2252 }; 2253 2254 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2255 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2256 }; 2257 2258 static int getMipsRegisterSize(uint8_t Flag) { 2259 switch (Flag) { 2260 case Mips::AFL_REG_NONE: 2261 return 0; 2262 case Mips::AFL_REG_32: 2263 return 32; 2264 case Mips::AFL_REG_64: 2265 return 64; 2266 case Mips::AFL_REG_128: 2267 return 128; 2268 default: 2269 return -1; 2270 } 2271 } 2272 2273 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2274 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2275 if (!Shdr) { 2276 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2277 return; 2278 } 2279 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2280 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2281 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2282 return; 2283 } 2284 2285 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2286 2287 raw_ostream &OS = W.getOStream(); 2288 DictScope GS(W, "MIPS ABI Flags"); 2289 2290 W.printNumber("Version", Flags->version); 2291 W.startLine() << "ISA: "; 2292 if (Flags->isa_rev <= 1) 2293 OS << format("MIPS%u", Flags->isa_level); 2294 else 2295 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2296 OS << "\n"; 2297 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2298 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2299 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2300 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2301 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2302 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2303 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2304 W.printHex("Flags 2", Flags->flags2); 2305 } 2306 2307 template <class ELFT> 2308 static void printMipsReginfoData(ScopedPrinter &W, 2309 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2310 W.printHex("GP", Reginfo.ri_gp_value); 2311 W.printHex("General Mask", Reginfo.ri_gprmask); 2312 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2313 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2314 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2315 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2316 } 2317 2318 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2319 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2320 if (!Shdr) { 2321 W.startLine() << "There is no .reginfo section in the file.\n"; 2322 return; 2323 } 2324 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2325 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2326 W.startLine() << "The .reginfo section has a wrong size.\n"; 2327 return; 2328 } 2329 2330 DictScope GS(W, "MIPS RegInfo"); 2331 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2332 printMipsReginfoData(W, *Reginfo); 2333 } 2334 2335 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2336 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2337 if (!Shdr) { 2338 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2339 return; 2340 } 2341 2342 DictScope GS(W, "MIPS Options"); 2343 2344 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2345 while (!Sec.empty()) { 2346 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2347 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2348 return; 2349 } 2350 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2351 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2352 switch (O->kind) { 2353 case ODK_REGINFO: 2354 printMipsReginfoData(W, O->getRegInfo()); 2355 break; 2356 default: 2357 W.startLine() << "Unsupported MIPS options tag.\n"; 2358 break; 2359 } 2360 Sec = Sec.slice(O->size); 2361 } 2362 } 2363 2364 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2365 const Elf_Shdr *StackMapSection = nullptr; 2366 for (const auto &Sec : unwrapOrError(Obj->sections())) { 2367 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2368 if (Name == ".llvm_stackmaps") { 2369 StackMapSection = &Sec; 2370 break; 2371 } 2372 } 2373 2374 if (!StackMapSection) 2375 return; 2376 2377 ArrayRef<uint8_t> StackMapContentsArray = 2378 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2379 2380 prettyPrintStackMap(outs(), StackMapV2Parser<ELFT::TargetEndianness>( 2381 StackMapContentsArray)); 2382 } 2383 2384 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2385 ELFDumperStyle->printGroupSections(Obj); 2386 } 2387 2388 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2389 StringRef Str2) { 2390 OS.PadToColumn(2u); 2391 OS << Str1; 2392 OS.PadToColumn(37u); 2393 OS << Str2 << "\n"; 2394 OS.flush(); 2395 } 2396 2397 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2398 const Elf_Ehdr *e = Obj->getHeader(); 2399 OS << "ELF Header:\n"; 2400 OS << " Magic: "; 2401 std::string Str; 2402 for (int i = 0; i < ELF::EI_NIDENT; i++) 2403 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2404 OS << "\n"; 2405 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2406 printFields(OS, "Class:", Str); 2407 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2408 printFields(OS, "Data:", Str); 2409 OS.PadToColumn(2u); 2410 OS << "Version:"; 2411 OS.PadToColumn(37u); 2412 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2413 if (e->e_version == ELF::EV_CURRENT) 2414 OS << " (current)"; 2415 OS << "\n"; 2416 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2417 printFields(OS, "OS/ABI:", Str); 2418 Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2419 printFields(OS, "ABI Version:", Str); 2420 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2421 printFields(OS, "Type:", Str); 2422 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2423 printFields(OS, "Machine:", Str); 2424 Str = "0x" + to_hexString(e->e_version); 2425 printFields(OS, "Version:", Str); 2426 Str = "0x" + to_hexString(e->e_entry); 2427 printFields(OS, "Entry point address:", Str); 2428 Str = to_string(e->e_phoff) + " (bytes into file)"; 2429 printFields(OS, "Start of program headers:", Str); 2430 Str = to_string(e->e_shoff) + " (bytes into file)"; 2431 printFields(OS, "Start of section headers:", Str); 2432 Str = "0x" + to_hexString(e->e_flags); 2433 printFields(OS, "Flags:", Str); 2434 Str = to_string(e->e_ehsize) + " (bytes)"; 2435 printFields(OS, "Size of this header:", Str); 2436 Str = to_string(e->e_phentsize) + " (bytes)"; 2437 printFields(OS, "Size of program headers:", Str); 2438 Str = to_string(e->e_phnum); 2439 printFields(OS, "Number of program headers:", Str); 2440 Str = to_string(e->e_shentsize) + " (bytes)"; 2441 printFields(OS, "Size of section headers:", Str); 2442 Str = to_string(e->e_shnum); 2443 printFields(OS, "Number of section headers:", Str); 2444 Str = to_string(e->e_shstrndx); 2445 printFields(OS, "Section header string table index:", Str); 2446 } 2447 2448 namespace { 2449 struct GroupMember { 2450 StringRef Name; 2451 uint64_t Index; 2452 }; 2453 2454 struct GroupSection { 2455 StringRef Name; 2456 StringRef Signature; 2457 uint64_t ShName; 2458 uint64_t Index; 2459 uint32_t Type; 2460 std::vector<GroupMember> Members; 2461 }; 2462 2463 template <class ELFT> 2464 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) { 2465 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 2466 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 2467 using Elf_Word = typename ELFFile<ELFT>::Elf_Word; 2468 2469 std::vector<GroupSection> Ret; 2470 uint64_t I = 0; 2471 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2472 ++I; 2473 if (Sec.sh_type != ELF::SHT_GROUP) 2474 continue; 2475 2476 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2477 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2478 const Elf_Sym *Sym = 2479 unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 2480 auto Data = 2481 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2482 2483 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2484 StringRef Signature = StrTable.data() + Sym->st_name; 2485 Ret.push_back({Name, Signature, Sec.sh_name, I - 1, Data[0], {}}); 2486 2487 std::vector<GroupMember> &GM = Ret.back().Members; 2488 for (uint32_t Ndx : Data.slice(1)) { 2489 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2490 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2491 GM.push_back({Name, Ndx}); 2492 } 2493 } 2494 return Ret; 2495 } 2496 2497 DenseMap<uint64_t, const GroupSection *> 2498 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 2499 DenseMap<uint64_t, const GroupSection *> Ret; 2500 for (const GroupSection &G : Groups) 2501 for (const GroupMember &GM : G.Members) 2502 Ret.insert({GM.Index, &G}); 2503 return Ret; 2504 } 2505 2506 } // namespace 2507 2508 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2509 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 2510 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 2511 for (const GroupSection &G : V) { 2512 OS << "\n" 2513 << getGroupType(G.Type) << " group section [" 2514 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 2515 << "] contains " << G.Members.size() << " sections:\n" 2516 << " [Index] Name\n"; 2517 for (const GroupMember &GM : G.Members) { 2518 const GroupSection *MainGroup = Map[GM.Index]; 2519 if (MainGroup != &G) { 2520 OS.flush(); 2521 errs() << "Error: section [" << format_decimal(GM.Index, 5) 2522 << "] in group section [" << format_decimal(G.Index, 5) 2523 << "] already in group section [" 2524 << format_decimal(MainGroup->Index, 5) << "]"; 2525 errs().flush(); 2526 continue; 2527 } 2528 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 2529 } 2530 } 2531 2532 if (V.empty()) 2533 OS << "There are no section groups in this file.\n"; 2534 } 2535 2536 template <class ELFT> 2537 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2538 const Elf_Rela &R, bool IsRela) { 2539 std::string Offset, Info, Addend, Value; 2540 SmallString<32> RelocName; 2541 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2542 StringRef TargetName; 2543 const Elf_Sym *Sym = nullptr; 2544 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2545 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2546 2547 // First two fields are bit width dependent. The rest of them are after are 2548 // fixed width. 2549 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2550 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2551 Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab)); 2552 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2553 const Elf_Shdr *Sec = unwrapOrError( 2554 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2555 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2556 } else if (Sym) { 2557 TargetName = unwrapOrError(Sym->getName(StrTable)); 2558 } 2559 2560 if (Sym && IsRela) { 2561 if (R.r_addend < 0) 2562 Addend = " - "; 2563 else 2564 Addend = " + "; 2565 } 2566 2567 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2568 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2569 2570 int64_t RelAddend = R.r_addend; 2571 if (IsRela) 2572 Addend += to_hexString(std::abs(RelAddend), false); 2573 2574 if (Sym) 2575 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2576 2577 Fields[0].Str = Offset; 2578 Fields[1].Str = Info; 2579 Fields[2].Str = RelocName; 2580 Fields[3].Str = Value; 2581 Fields[4].Str = TargetName; 2582 for (auto &field : Fields) 2583 printField(field); 2584 OS << Addend; 2585 OS << "\n"; 2586 } 2587 2588 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2589 if (Is64) 2590 OS << " Offset Info Type" 2591 << " Symbol's Value Symbol's Name"; 2592 else 2593 OS << " Offset Info Type Sym. Value " 2594 << "Symbol's Name"; 2595 if (IsRela) 2596 OS << (IsRela ? " + Addend" : ""); 2597 OS << "\n"; 2598 } 2599 2600 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2601 bool HasRelocSections = false; 2602 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2603 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 2604 Sec.sh_type != ELF::SHT_ANDROID_REL && 2605 Sec.sh_type != ELF::SHT_ANDROID_RELA) 2606 continue; 2607 HasRelocSections = true; 2608 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2609 unsigned Entries = Sec.getEntityCount(); 2610 uintX_t Offset = Sec.sh_offset; 2611 OS << "\nRelocation section '" << Name << "' at offset 0x" 2612 << to_hexString(Offset, false) << " contains " << Entries 2613 << " entries:\n"; 2614 printRelocHeader(OS, ELFT::Is64Bits, 2615 Sec.sh_type == ELF::SHT_RELA || 2616 Sec.sh_type == ELF::SHT_ANDROID_RELA); 2617 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2618 switch (Sec.sh_type) { 2619 case ELF::SHT_REL: 2620 for (const auto &R : unwrapOrError(Obj->rels(&Sec))) { 2621 Elf_Rela Rela; 2622 Rela.r_offset = R.r_offset; 2623 Rela.r_info = R.r_info; 2624 Rela.r_addend = 0; 2625 printRelocation(Obj, SymTab, Rela, false); 2626 } 2627 break; 2628 case ELF::SHT_RELA: 2629 for (const auto &R : unwrapOrError(Obj->relas(&Sec))) 2630 printRelocation(Obj, SymTab, R, true); 2631 break; 2632 case ELF::SHT_ANDROID_REL: 2633 case ELF::SHT_ANDROID_RELA: 2634 for (const auto &R : unwrapOrError(Obj->android_relas(&Sec))) 2635 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA); 2636 break; 2637 } 2638 } 2639 if (!HasRelocSections) 2640 OS << "\nThere are no relocations in this file.\n"; 2641 } 2642 2643 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2644 using namespace ELF; 2645 2646 switch (Arch) { 2647 case EM_ARM: 2648 switch (Type) { 2649 case SHT_ARM_EXIDX: 2650 return "ARM_EXIDX"; 2651 case SHT_ARM_PREEMPTMAP: 2652 return "ARM_PREEMPTMAP"; 2653 case SHT_ARM_ATTRIBUTES: 2654 return "ARM_ATTRIBUTES"; 2655 case SHT_ARM_DEBUGOVERLAY: 2656 return "ARM_DEBUGOVERLAY"; 2657 case SHT_ARM_OVERLAYSECTION: 2658 return "ARM_OVERLAYSECTION"; 2659 } 2660 case EM_X86_64: 2661 switch (Type) { 2662 case SHT_X86_64_UNWIND: 2663 return "X86_64_UNWIND"; 2664 } 2665 case EM_MIPS: 2666 case EM_MIPS_RS3_LE: 2667 switch (Type) { 2668 case SHT_MIPS_REGINFO: 2669 return "MIPS_REGINFO"; 2670 case SHT_MIPS_OPTIONS: 2671 return "MIPS_OPTIONS"; 2672 case SHT_MIPS_ABIFLAGS: 2673 return "MIPS_ABIFLAGS"; 2674 case SHT_MIPS_DWARF: 2675 return "SHT_MIPS_DWARF"; 2676 } 2677 } 2678 switch (Type) { 2679 case SHT_NULL: 2680 return "NULL"; 2681 case SHT_PROGBITS: 2682 return "PROGBITS"; 2683 case SHT_SYMTAB: 2684 return "SYMTAB"; 2685 case SHT_STRTAB: 2686 return "STRTAB"; 2687 case SHT_RELA: 2688 return "RELA"; 2689 case SHT_HASH: 2690 return "HASH"; 2691 case SHT_DYNAMIC: 2692 return "DYNAMIC"; 2693 case SHT_NOTE: 2694 return "NOTE"; 2695 case SHT_NOBITS: 2696 return "NOBITS"; 2697 case SHT_REL: 2698 return "REL"; 2699 case SHT_SHLIB: 2700 return "SHLIB"; 2701 case SHT_DYNSYM: 2702 return "DYNSYM"; 2703 case SHT_INIT_ARRAY: 2704 return "INIT_ARRAY"; 2705 case SHT_FINI_ARRAY: 2706 return "FINI_ARRAY"; 2707 case SHT_PREINIT_ARRAY: 2708 return "PREINIT_ARRAY"; 2709 case SHT_GROUP: 2710 return "GROUP"; 2711 case SHT_SYMTAB_SHNDX: 2712 return "SYMTAB SECTION INDICES"; 2713 case SHT_LLVM_ODRTAB: 2714 return "LLVM_ODRTAB"; 2715 // FIXME: Parse processor specific GNU attributes 2716 case SHT_GNU_ATTRIBUTES: 2717 return "ATTRIBUTES"; 2718 case SHT_GNU_HASH: 2719 return "GNU_HASH"; 2720 case SHT_GNU_verdef: 2721 return "VERDEF"; 2722 case SHT_GNU_verneed: 2723 return "VERNEED"; 2724 case SHT_GNU_versym: 2725 return "VERSYM"; 2726 default: 2727 return ""; 2728 } 2729 return ""; 2730 } 2731 2732 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2733 size_t SectionIndex = 0; 2734 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2735 Alignment; 2736 unsigned Bias; 2737 unsigned Width; 2738 2739 if (ELFT::Is64Bits) { 2740 Bias = 0; 2741 Width = 16; 2742 } else { 2743 Bias = 8; 2744 Width = 8; 2745 } 2746 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2747 << " section headers, starting at offset " 2748 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2749 OS << "Section Headers:\n"; 2750 Field Fields[11] = {{"[Nr]", 2}, 2751 {"Name", 7}, 2752 {"Type", 25}, 2753 {"Address", 41}, 2754 {"Off", 58 - Bias}, 2755 {"Size", 65 - Bias}, 2756 {"ES", 72 - Bias}, 2757 {"Flg", 75 - Bias}, 2758 {"Lk", 79 - Bias}, 2759 {"Inf", 82 - Bias}, 2760 {"Al", 86 - Bias}}; 2761 for (auto &f : Fields) 2762 printField(f); 2763 OS << "\n"; 2764 2765 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2766 Number = to_string(SectionIndex); 2767 Fields[0].Str = Number; 2768 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2769 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2770 Fields[2].Str = Type; 2771 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2772 Fields[3].Str = Address; 2773 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2774 Fields[4].Str = Offset; 2775 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2776 Fields[5].Str = Size; 2777 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2778 Fields[6].Str = EntrySize; 2779 Flags = getGNUFlags(Sec.sh_flags); 2780 Fields[7].Str = Flags; 2781 Link = to_string(Sec.sh_link); 2782 Fields[8].Str = Link; 2783 Info = to_string(Sec.sh_info); 2784 Fields[9].Str = Info; 2785 Alignment = to_string(Sec.sh_addralign); 2786 Fields[10].Str = Alignment; 2787 OS.PadToColumn(Fields[0].Column); 2788 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2789 for (int i = 1; i < 7; i++) 2790 printField(Fields[i]); 2791 OS.PadToColumn(Fields[7].Column); 2792 OS << right_justify(Fields[7].Str, 3); 2793 OS.PadToColumn(Fields[8].Column); 2794 OS << right_justify(Fields[8].Str, 2); 2795 OS.PadToColumn(Fields[9].Column); 2796 OS << right_justify(Fields[9].Str, 3); 2797 OS.PadToColumn(Fields[10].Column); 2798 OS << right_justify(Fields[10].Str, 2); 2799 OS << "\n"; 2800 ++SectionIndex; 2801 } 2802 OS << "Key to Flags:\n" 2803 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2804 "(large)\n" 2805 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2806 x (unknown)\n" 2807 << " O (extra OS processing required) o (OS specific),\ 2808 p (processor specific)\n"; 2809 } 2810 2811 template <class ELFT> 2812 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2813 size_t Entries) { 2814 if (!Name.empty()) 2815 OS << "\nSymbol table '" << Name << "' contains " << Entries 2816 << " entries:\n"; 2817 else 2818 OS << "\n Symbol table for image:\n"; 2819 2820 if (ELFT::Is64Bits) 2821 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2822 else 2823 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2824 } 2825 2826 template <class ELFT> 2827 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2828 const Elf_Sym *Symbol, 2829 const Elf_Sym *FirstSym) { 2830 unsigned SectionIndex = Symbol->st_shndx; 2831 switch (SectionIndex) { 2832 case ELF::SHN_UNDEF: 2833 return "UND"; 2834 case ELF::SHN_ABS: 2835 return "ABS"; 2836 case ELF::SHN_COMMON: 2837 return "COM"; 2838 case ELF::SHN_XINDEX: 2839 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 2840 Symbol, FirstSym, this->dumper()->getShndxTable())); 2841 LLVM_FALLTHROUGH; 2842 default: 2843 // Find if: 2844 // Processor specific 2845 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2846 return std::string("PRC[0x") + 2847 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2848 // OS specific 2849 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2850 return std::string("OS[0x") + 2851 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2852 // Architecture reserved: 2853 if (SectionIndex >= ELF::SHN_LORESERVE && 2854 SectionIndex <= ELF::SHN_HIRESERVE) 2855 return std::string("RSV[0x") + 2856 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2857 // A normal section with an index 2858 return to_string(format_decimal(SectionIndex, 3)); 2859 } 2860 } 2861 2862 template <class ELFT> 2863 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2864 const Elf_Sym *FirstSym, StringRef StrTable, 2865 bool IsDynamic) { 2866 static int Idx = 0; 2867 static bool Dynamic = true; 2868 size_t Width; 2869 2870 // If this function was called with a different value from IsDynamic 2871 // from last call, happens when we move from dynamic to static symbol 2872 // table, "Num" field should be reset. 2873 if (!Dynamic != !IsDynamic) { 2874 Idx = 0; 2875 Dynamic = false; 2876 } 2877 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2878 unsigned Bias = 0; 2879 if (ELFT::Is64Bits) { 2880 Bias = 8; 2881 Width = 16; 2882 } else { 2883 Bias = 0; 2884 Width = 8; 2885 } 2886 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2887 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2888 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2889 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2890 Size = to_string(format_decimal(Symbol->st_size, 5)); 2891 unsigned char SymbolType = Symbol->getType(); 2892 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2893 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2894 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2895 else 2896 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2897 unsigned Vis = Symbol->getVisibility(); 2898 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2899 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2900 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2901 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2902 Fields[0].Str = Num; 2903 Fields[1].Str = Value; 2904 Fields[2].Str = Size; 2905 Fields[3].Str = Type; 2906 Fields[4].Str = Binding; 2907 Fields[5].Str = Visibility; 2908 Fields[6].Str = Section; 2909 Fields[7].Str = Name; 2910 for (auto &Entry : Fields) 2911 printField(Entry); 2912 OS << "\n"; 2913 } 2914 template <class ELFT> 2915 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 2916 uint32_t Sym, StringRef StrTable, 2917 uint32_t Bucket) { 2918 std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section; 2919 unsigned Width, Bias = 0; 2920 if (ELFT::Is64Bits) { 2921 Bias = 8; 2922 Width = 16; 2923 } else { 2924 Bias = 0; 2925 Width = 8; 2926 } 2927 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 2928 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 2929 Num = to_string(format_decimal(Sym, 5)); 2930 Buc = to_string(format_decimal(Bucket, 3)) + ":"; 2931 2932 const auto Symbol = FirstSym + Sym; 2933 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2934 Size = to_string(format_decimal(Symbol->st_size, 5)); 2935 unsigned char SymbolType = Symbol->getType(); 2936 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2937 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2938 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2939 else 2940 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2941 unsigned Vis = Symbol->getVisibility(); 2942 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2943 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2944 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2945 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 2946 Fields[0].Str = Num; 2947 Fields[1].Str = Buc; 2948 Fields[2].Str = Value; 2949 Fields[3].Str = Size; 2950 Fields[4].Str = Type; 2951 Fields[5].Str = Binding; 2952 Fields[6].Str = Visibility; 2953 Fields[7].Str = Section; 2954 Fields[8].Str = Name; 2955 for (auto &Entry : Fields) 2956 printField(Entry); 2957 OS << "\n"; 2958 } 2959 2960 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2961 if (opts::DynamicSymbols) 2962 return; 2963 this->dumper()->printSymbolsHelper(true); 2964 this->dumper()->printSymbolsHelper(false); 2965 } 2966 2967 template <class ELFT> 2968 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2969 if (this->dumper()->getDynamicStringTable().empty()) 2970 return; 2971 auto StringTable = this->dumper()->getDynamicStringTable(); 2972 auto DynSyms = this->dumper()->dynamic_symbols(); 2973 auto GnuHash = this->dumper()->getGnuHashTable(); 2974 auto SysVHash = this->dumper()->getHashTable(); 2975 2976 // If no hash or .gnu.hash found, try using symbol table 2977 if (GnuHash == nullptr && SysVHash == nullptr) 2978 this->dumper()->printSymbolsHelper(true); 2979 2980 // Try printing .hash 2981 if (this->dumper()->getHashTable()) { 2982 OS << "\n Symbol table of .hash for image:\n"; 2983 if (ELFT::Is64Bits) 2984 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2985 else 2986 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2987 OS << "\n"; 2988 2989 uint32_t NBuckets = SysVHash->nbucket; 2990 uint32_t NChains = SysVHash->nchain; 2991 auto Buckets = SysVHash->buckets(); 2992 auto Chains = SysVHash->chains(); 2993 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 2994 if (Buckets[Buc] == ELF::STN_UNDEF) 2995 continue; 2996 for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) { 2997 if (Ch == ELF::STN_UNDEF) 2998 break; 2999 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc); 3000 } 3001 } 3002 } 3003 3004 // Try printing .gnu.hash 3005 if (GnuHash) { 3006 OS << "\n Symbol table of .gnu.hash for image:\n"; 3007 if (ELFT::Is64Bits) 3008 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3009 else 3010 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3011 OS << "\n"; 3012 uint32_t NBuckets = GnuHash->nbuckets; 3013 auto Buckets = GnuHash->buckets(); 3014 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 3015 if (Buckets[Buc] == ELF::STN_UNDEF) 3016 continue; 3017 uint32_t Index = Buckets[Buc]; 3018 uint32_t GnuHashable = Index - GnuHash->symndx; 3019 // Print whole chain 3020 while (true) { 3021 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc); 3022 // Chain ends at symbol with stopper bit 3023 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1) 3024 break; 3025 } 3026 } 3027 } 3028 } 3029 3030 static inline std::string printPhdrFlags(unsigned Flag) { 3031 std::string Str; 3032 Str = (Flag & PF_R) ? "R" : " "; 3033 Str += (Flag & PF_W) ? "W" : " "; 3034 Str += (Flag & PF_X) ? "E" : " "; 3035 return Str; 3036 } 3037 3038 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 3039 // PT_TLS must only have SHF_TLS sections 3040 template <class ELFT> 3041 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 3042 const Elf_Shdr &Sec) { 3043 return (((Sec.sh_flags & ELF::SHF_TLS) && 3044 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 3045 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 3046 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 3047 } 3048 3049 // Non-SHT_NOBITS must have its offset inside the segment 3050 // Only non-zero section can be at end of segment 3051 template <class ELFT> 3052 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3053 if (Sec.sh_type == ELF::SHT_NOBITS) 3054 return true; 3055 bool IsSpecial = 3056 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3057 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3058 auto SectionSize = 3059 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3060 if (Sec.sh_offset >= Phdr.p_offset) 3061 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 3062 /*only non-zero sized sections at end*/ && 3063 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 3064 return false; 3065 } 3066 3067 // SHF_ALLOC must have VMA inside segment 3068 // Only non-zero section can be at end of segment 3069 template <class ELFT> 3070 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3071 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 3072 return true; 3073 bool IsSpecial = 3074 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3075 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3076 auto SectionSize = 3077 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3078 if (Sec.sh_addr >= Phdr.p_vaddr) 3079 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 3080 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 3081 return false; 3082 } 3083 3084 // No section with zero size must be at start or end of PT_DYNAMIC 3085 template <class ELFT> 3086 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3087 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 3088 return true; 3089 // Is section within the phdr both based on offset and VMA ? 3090 return ((Sec.sh_type == ELF::SHT_NOBITS) || 3091 (Sec.sh_offset > Phdr.p_offset && 3092 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 3093 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 3094 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 3095 } 3096 3097 template <class ELFT> 3098 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3099 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3100 unsigned Width = ELFT::Is64Bits ? 18 : 10; 3101 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 3102 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 3103 3104 const Elf_Ehdr *Header = Obj->getHeader(); 3105 Field Fields[8] = {2, 17, 26, 37 + Bias, 3106 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 3107 OS << "\nElf file type is " 3108 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 3109 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 3110 << "There are " << Header->e_phnum << " program headers," 3111 << " starting at offset " << Header->e_phoff << "\n\n" 3112 << "Program Headers:\n"; 3113 if (ELFT::Is64Bits) 3114 OS << " Type Offset VirtAddr PhysAddr " 3115 << " FileSiz MemSiz Flg Align\n"; 3116 else 3117 OS << " Type Offset VirtAddr PhysAddr FileSiz " 3118 << "MemSiz Flg Align\n"; 3119 for (const auto &Phdr : unwrapOrError(Obj->program_headers())) { 3120 Type = getElfPtType(Header->e_machine, Phdr.p_type); 3121 Offset = to_string(format_hex(Phdr.p_offset, 8)); 3122 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 3123 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 3124 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 3125 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 3126 Flag = printPhdrFlags(Phdr.p_flags); 3127 Align = to_string(format_hex(Phdr.p_align, 1)); 3128 Fields[0].Str = Type; 3129 Fields[1].Str = Offset; 3130 Fields[2].Str = VMA; 3131 Fields[3].Str = LMA; 3132 Fields[4].Str = FileSz; 3133 Fields[5].Str = MemSz; 3134 Fields[6].Str = Flag; 3135 Fields[7].Str = Align; 3136 for (auto Field : Fields) 3137 printField(Field); 3138 if (Phdr.p_type == ELF::PT_INTERP) { 3139 OS << "\n [Requesting program interpreter: "; 3140 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 3141 } 3142 OS << "\n"; 3143 } 3144 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 3145 int Phnum = 0; 3146 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3147 std::string Sections; 3148 OS << format(" %2.2d ", Phnum++); 3149 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3150 // Check if each section is in a segment and then print mapping. 3151 // readelf additionally makes sure it does not print zero sized sections 3152 // at end of segments and for PT_DYNAMIC both start and end of section 3153 // .tbss must only be shown in PT_TLS section. 3154 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 3155 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 3156 Phdr.p_type != ELF::PT_TLS; 3157 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 3158 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 3159 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 3160 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 3161 } 3162 OS << Sections << "\n"; 3163 OS.flush(); 3164 } 3165 } 3166 3167 template <class ELFT> 3168 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 3169 bool IsRela) { 3170 SmallString<32> RelocName; 3171 StringRef SymbolName; 3172 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3173 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3174 // First two fields are bit width dependent. The rest of them are after are 3175 // fixed width. 3176 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3177 3178 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 3179 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3180 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3181 SymbolName = 3182 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3183 std::string Addend, Info, Offset, Value; 3184 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 3185 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 3186 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3187 int64_t RelAddend = R.r_addend; 3188 if (!SymbolName.empty() && IsRela) { 3189 if (R.r_addend < 0) 3190 Addend = " - "; 3191 else 3192 Addend = " + "; 3193 } 3194 3195 if (SymbolName.empty() && Sym->getValue() == 0) 3196 Value = ""; 3197 3198 if (IsRela) 3199 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 3200 3201 3202 Fields[0].Str = Offset; 3203 Fields[1].Str = Info; 3204 Fields[2].Str = RelocName.c_str(); 3205 Fields[3].Str = Value; 3206 Fields[4].Str = SymbolName; 3207 for (auto &Field : Fields) 3208 printField(Field); 3209 OS << Addend; 3210 OS << "\n"; 3211 } 3212 3213 template <class ELFT> 3214 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3215 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3216 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3217 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3218 if (DynRelaRegion.Size > 0) { 3219 OS << "\n'RELA' relocation section at offset " 3220 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3221 Obj->base(), 3222 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3223 printRelocHeader(OS, ELFT::Is64Bits, true); 3224 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3225 printDynamicRelocation(Obj, Rela, true); 3226 } 3227 if (DynRelRegion.Size > 0) { 3228 OS << "\n'REL' relocation section at offset " 3229 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3230 Obj->base(), 3231 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3232 printRelocHeader(OS, ELFT::Is64Bits, false); 3233 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3234 Elf_Rela Rela; 3235 Rela.r_offset = Rel.r_offset; 3236 Rela.r_info = Rel.r_info; 3237 Rela.r_addend = 0; 3238 printDynamicRelocation(Obj, Rela, false); 3239 } 3240 } 3241 if (DynPLTRelRegion.Size) { 3242 OS << "\n'PLT' relocation section at offset " 3243 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3244 Obj->base(), 3245 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3246 } 3247 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3248 printRelocHeader(OS, ELFT::Is64Bits, true); 3249 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3250 printDynamicRelocation(Obj, Rela, true); 3251 } else { 3252 printRelocHeader(OS, ELFT::Is64Bits, false); 3253 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3254 Elf_Rela Rela; 3255 Rela.r_offset = Rel.r_offset; 3256 Rela.r_info = Rel.r_info; 3257 Rela.r_addend = 0; 3258 printDynamicRelocation(Obj, Rela, false); 3259 } 3260 } 3261 } 3262 3263 // Hash histogram shows statistics of how efficient the hash was for the 3264 // dynamic symbol table. The table shows number of hash buckets for different 3265 // lengths of chains as absolute number and percentage of the total buckets. 3266 // Additionally cumulative coverage of symbols for each set of buckets. 3267 template <class ELFT> 3268 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3269 3270 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3271 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3272 3273 // Print histogram for .hash section 3274 if (HashTable) { 3275 size_t NBucket = HashTable->nbucket; 3276 size_t NChain = HashTable->nchain; 3277 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3278 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3279 size_t TotalSyms = 0; 3280 // If hash table is correct, we have at least chains with 0 length 3281 size_t MaxChain = 1; 3282 size_t CumulativeNonZero = 0; 3283 3284 if (NChain == 0 || NBucket == 0) 3285 return; 3286 3287 std::vector<size_t> ChainLen(NBucket, 0); 3288 // Go over all buckets and and note chain lengths of each bucket (total 3289 // unique chain lengths). 3290 for (size_t B = 0; B < NBucket; B++) { 3291 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3292 if (MaxChain <= ++ChainLen[B]) 3293 MaxChain++; 3294 TotalSyms += ChainLen[B]; 3295 } 3296 3297 if (!TotalSyms) 3298 return; 3299 3300 std::vector<size_t> Count(MaxChain, 0) ; 3301 // Count how long is the chain for each bucket 3302 for (size_t B = 0; B < NBucket; B++) 3303 ++Count[ChainLen[B]]; 3304 // Print Number of buckets with each chain lengths and their cumulative 3305 // coverage of the symbols 3306 OS << "Histogram for bucket list length (total of " << NBucket 3307 << " buckets)\n" 3308 << " Length Number % of total Coverage\n"; 3309 for (size_t I = 0; I < MaxChain; I++) { 3310 CumulativeNonZero += Count[I] * I; 3311 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3312 (Count[I] * 100.0) / NBucket, 3313 (CumulativeNonZero * 100.0) / TotalSyms); 3314 } 3315 } 3316 3317 // Print histogram for .gnu.hash section 3318 if (GnuHashTable) { 3319 size_t NBucket = GnuHashTable->nbuckets; 3320 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3321 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3322 if (!NumSyms) 3323 return; 3324 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3325 size_t Symndx = GnuHashTable->symndx; 3326 size_t TotalSyms = 0; 3327 size_t MaxChain = 1; 3328 size_t CumulativeNonZero = 0; 3329 3330 if (Chains.empty() || NBucket == 0) 3331 return; 3332 3333 std::vector<size_t> ChainLen(NBucket, 0); 3334 3335 for (size_t B = 0; B < NBucket; B++) { 3336 if (!Buckets[B]) 3337 continue; 3338 size_t Len = 1; 3339 for (size_t C = Buckets[B] - Symndx; 3340 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3341 if (MaxChain < ++Len) 3342 MaxChain++; 3343 ChainLen[B] = Len; 3344 TotalSyms += Len; 3345 } 3346 MaxChain++; 3347 3348 if (!TotalSyms) 3349 return; 3350 3351 std::vector<size_t> Count(MaxChain, 0) ; 3352 for (size_t B = 0; B < NBucket; B++) 3353 ++Count[ChainLen[B]]; 3354 // Print Number of buckets with each chain lengths and their cumulative 3355 // coverage of the symbols 3356 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3357 << " buckets)\n" 3358 << " Length Number % of total Coverage\n"; 3359 for (size_t I = 0; I <MaxChain; I++) { 3360 CumulativeNonZero += Count[I] * I; 3361 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3362 (Count[I] * 100.0) / NBucket, 3363 (CumulativeNonZero * 100.0) / TotalSyms); 3364 } 3365 } 3366 } 3367 3368 static std::string getGNUNoteTypeName(const uint32_t NT) { 3369 static const struct { 3370 uint32_t ID; 3371 const char *Name; 3372 } Notes[] = { 3373 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 3374 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 3375 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 3376 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 3377 }; 3378 3379 for (const auto &Note : Notes) 3380 if (Note.ID == NT) 3381 return std::string(Note.Name); 3382 3383 std::string string; 3384 raw_string_ostream OS(string); 3385 OS << format("Unknown note type (0x%08x)", NT); 3386 return OS.str(); 3387 } 3388 3389 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 3390 static const struct { 3391 uint32_t ID; 3392 const char *Name; 3393 } Notes[] = { 3394 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 3395 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 3396 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 3397 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 3398 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 3399 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 3400 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 3401 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 3402 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 3403 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 3404 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 3405 }; 3406 3407 for (const auto &Note : Notes) 3408 if (Note.ID == NT) 3409 return std::string(Note.Name); 3410 3411 std::string string; 3412 raw_string_ostream OS(string); 3413 OS << format("Unknown note type (0x%08x)", NT); 3414 return OS.str(); 3415 } 3416 3417 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 3418 static const struct { 3419 uint32_t ID; 3420 const char *Name; 3421 } Notes[] = { 3422 {ELF::NT_AMD_AMDGPU_HSA_METADATA, 3423 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 3424 {ELF::NT_AMD_AMDGPU_ISA, 3425 "NT_AMD_AMDGPU_ISA (ISA Version)"}, 3426 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 3427 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"} 3428 }; 3429 3430 for (const auto &Note : Notes) 3431 if (Note.ID == NT) 3432 return std::string(Note.Name); 3433 3434 std::string string; 3435 raw_string_ostream OS(string); 3436 OS << format("Unknown note type (0x%08x)", NT); 3437 return OS.str(); 3438 } 3439 3440 template <typename ELFT> 3441 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 3442 ArrayRef<typename ELFFile<ELFT>::Elf_Word> Words, 3443 size_t Size) { 3444 switch (NoteType) { 3445 default: 3446 return; 3447 case ELF::NT_GNU_ABI_TAG: { 3448 static const char *OSNames[] = { 3449 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 3450 }; 3451 3452 StringRef OSName = "Unknown"; 3453 if (Words[0] < array_lengthof(OSNames)) 3454 OSName = OSNames[Words[0]]; 3455 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 3456 3457 if (Words.size() < 4) 3458 OS << " <corrupt GNU_ABI_TAG>"; 3459 else 3460 OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "." 3461 << Patch; 3462 break; 3463 } 3464 case ELF::NT_GNU_BUILD_ID: { 3465 OS << " Build ID: "; 3466 ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size); 3467 for (const auto &B : ID) 3468 OS << format_hex_no_prefix(B, 2); 3469 break; 3470 } 3471 case ELF::NT_GNU_GOLD_VERSION: 3472 OS << " Version: " 3473 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3474 break; 3475 } 3476 3477 OS << '\n'; 3478 } 3479 3480 template <typename ELFT> 3481 static void printAMDGPUNote(raw_ostream &OS, uint32_t NoteType, 3482 ArrayRef<typename ELFFile<ELFT>::Elf_Word> Words, 3483 size_t Size) { 3484 switch (NoteType) { 3485 default: 3486 return; 3487 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 3488 OS << " HSA Metadata:\n" 3489 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3490 break; 3491 case ELF::NT_AMD_AMDGPU_ISA: 3492 OS << " ISA Version:\n" 3493 << " " 3494 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3495 break; 3496 case ELF::NT_AMD_AMDGPU_PAL_METADATA: 3497 const uint32_t *PALMetadataBegin = reinterpret_cast<const uint32_t *>(Words.data()); 3498 const uint32_t *PALMetadataEnd = PALMetadataBegin + Size; 3499 std::vector<uint32_t> PALMetadata(PALMetadataBegin, PALMetadataEnd); 3500 std::string PALMetadataString; 3501 auto Error = AMDGPU::PALMD::toString(PALMetadata, PALMetadataString); 3502 OS << " PAL Metadata:\n"; 3503 if (Error) { 3504 OS << " Invalid"; 3505 return; 3506 } 3507 OS << PALMetadataString; 3508 break; 3509 } 3510 OS.flush(); 3511 } 3512 3513 template <class ELFT> 3514 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3515 const Elf_Ehdr *e = Obj->getHeader(); 3516 bool IsCore = e->e_type == ELF::ET_CORE; 3517 3518 auto process = [&](const typename ELFFile<ELFT>::Elf_Off Offset, 3519 const typename ELFFile<ELFT>::Elf_Addr Size) { 3520 if (Size <= 0) 3521 return; 3522 3523 const auto *P = static_cast<const uint8_t *>(Obj->base() + Offset); 3524 const auto *E = P + Size; 3525 3526 OS << "Displaying notes found at file offset " << format_hex(Offset, 10) 3527 << " with length " << format_hex(Size, 10) << ":\n" 3528 << " Owner Data size\tDescription\n"; 3529 3530 while (P < E) { 3531 const Elf_Word *Words = reinterpret_cast<const Elf_Word *>(&P[0]); 3532 3533 uint32_t NameSize = Words[0]; 3534 uint32_t DescriptorSize = Words[1]; 3535 uint32_t Type = Words[2]; 3536 3537 ArrayRef<Elf_Word> Descriptor(&Words[3 + (alignTo<4>(NameSize) / 4)], 3538 alignTo<4>(DescriptorSize) / 4); 3539 3540 StringRef Name; 3541 if (NameSize) 3542 Name = 3543 StringRef(reinterpret_cast<const char *>(&Words[3]), NameSize - 1); 3544 3545 OS << " " << Name << std::string(22 - NameSize, ' ') 3546 << format_hex(DescriptorSize, 10) << '\t'; 3547 3548 if (Name == "GNU") { 3549 OS << getGNUNoteTypeName(Type) << '\n'; 3550 printGNUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3551 } else if (Name == "FreeBSD") { 3552 OS << getFreeBSDNoteTypeName(Type) << '\n'; 3553 } else if (Name == "AMD") { 3554 OS << getAMDGPUNoteTypeName(Type) << '\n'; 3555 printAMDGPUNote<ELFT>(OS, Type, Descriptor, DescriptorSize); 3556 } else { 3557 OS << "Unknown note type: (" << format_hex(Type, 10) << ')'; 3558 } 3559 OS << '\n'; 3560 3561 P = P + 3 * sizeof(Elf_Word) + alignTo<4>(NameSize) + 3562 alignTo<4>(DescriptorSize); 3563 } 3564 }; 3565 3566 if (IsCore) { 3567 for (const auto &P : unwrapOrError(Obj->program_headers())) 3568 if (P.p_type == PT_NOTE) 3569 process(P.p_offset, P.p_filesz); 3570 } else { 3571 for (const auto &S : unwrapOrError(Obj->sections())) 3572 if (S.sh_type == SHT_NOTE) 3573 process(S.sh_offset, S.sh_size); 3574 } 3575 } 3576 3577 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3578 const Elf_Ehdr *e = Obj->getHeader(); 3579 { 3580 DictScope D(W, "ElfHeader"); 3581 { 3582 DictScope D(W, "Ident"); 3583 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3584 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3585 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3586 makeArrayRef(ElfDataEncoding)); 3587 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3588 3589 auto OSABI = makeArrayRef(ElfOSABI); 3590 if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 3591 e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 3592 switch (e->e_machine) { 3593 case ELF::EM_AMDGPU: 3594 OSABI = makeArrayRef(AMDGPUElfOSABI); 3595 break; 3596 case ELF::EM_ARM: 3597 OSABI = makeArrayRef(ARMElfOSABI); 3598 break; 3599 case ELF::EM_TI_C6000: 3600 OSABI = makeArrayRef(C6000ElfOSABI); 3601 break; 3602 } 3603 } 3604 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI); 3605 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3606 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3607 } 3608 3609 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3610 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3611 W.printNumber("Version", e->e_version); 3612 W.printHex("Entry", e->e_entry); 3613 W.printHex("ProgramHeaderOffset", e->e_phoff); 3614 W.printHex("SectionHeaderOffset", e->e_shoff); 3615 if (e->e_machine == EM_MIPS) 3616 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3617 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3618 unsigned(ELF::EF_MIPS_MACH)); 3619 else if (e->e_machine == EM_AMDGPU) 3620 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 3621 unsigned(ELF::EF_AMDGPU_ARCH)); 3622 else if (e->e_machine == EM_RISCV) 3623 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3624 else 3625 W.printFlags("Flags", e->e_flags); 3626 W.printNumber("HeaderSize", e->e_ehsize); 3627 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3628 W.printNumber("ProgramHeaderCount", e->e_phnum); 3629 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3630 W.printNumber("SectionHeaderCount", e->e_shnum); 3631 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3632 } 3633 } 3634 3635 template <class ELFT> 3636 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3637 DictScope Lists(W, "Groups"); 3638 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 3639 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3640 for (const GroupSection &G : V) { 3641 DictScope D(W, "Group"); 3642 W.printNumber("Name", G.Name, G.ShName); 3643 W.printNumber("Index", G.Index); 3644 W.printHex("Type", getGroupType(G.Type), G.Type); 3645 W.startLine() << "Signature: " << G.Signature << "\n"; 3646 3647 ListScope L(W, "Section(s) in group"); 3648 for (const GroupMember &GM : G.Members) { 3649 const GroupSection *MainGroup = Map[GM.Index]; 3650 if (MainGroup != &G) { 3651 W.flush(); 3652 errs() << "Error: " << GM.Name << " (" << GM.Index 3653 << ") in a group " + G.Name + " (" << G.Index 3654 << ") is already in a group " + MainGroup->Name + " (" 3655 << MainGroup->Index << ")\n"; 3656 errs().flush(); 3657 continue; 3658 } 3659 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 3660 } 3661 } 3662 3663 if (V.empty()) 3664 W.startLine() << "There are no group sections in the file.\n"; 3665 } 3666 3667 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3668 ListScope D(W, "Relocations"); 3669 3670 int SectionNumber = -1; 3671 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3672 ++SectionNumber; 3673 3674 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3675 Sec.sh_type != ELF::SHT_ANDROID_REL && 3676 Sec.sh_type != ELF::SHT_ANDROID_RELA) 3677 continue; 3678 3679 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3680 3681 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3682 W.indent(); 3683 3684 printRelocations(&Sec, Obj); 3685 3686 W.unindent(); 3687 W.startLine() << "}\n"; 3688 } 3689 } 3690 3691 template <class ELFT> 3692 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3693 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3694 3695 switch (Sec->sh_type) { 3696 case ELF::SHT_REL: 3697 for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) { 3698 Elf_Rela Rela; 3699 Rela.r_offset = R.r_offset; 3700 Rela.r_info = R.r_info; 3701 Rela.r_addend = 0; 3702 printRelocation(Obj, Rela, SymTab); 3703 } 3704 break; 3705 case ELF::SHT_RELA: 3706 for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec))) 3707 printRelocation(Obj, R, SymTab); 3708 break; 3709 case ELF::SHT_ANDROID_REL: 3710 case ELF::SHT_ANDROID_RELA: 3711 for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec))) 3712 printRelocation(Obj, R, SymTab); 3713 break; 3714 } 3715 } 3716 3717 template <class ELFT> 3718 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3719 const Elf_Shdr *SymTab) { 3720 SmallString<32> RelocName; 3721 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3722 StringRef TargetName; 3723 const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab)); 3724 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3725 const Elf_Shdr *Sec = unwrapOrError( 3726 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3727 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3728 } else if (Sym) { 3729 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3730 TargetName = unwrapOrError(Sym->getName(StrTable)); 3731 } 3732 3733 if (opts::ExpandRelocs) { 3734 DictScope Group(W, "Relocation"); 3735 W.printHex("Offset", Rel.r_offset); 3736 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3737 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 3738 Rel.getSymbol(Obj->isMips64EL())); 3739 W.printHex("Addend", Rel.r_addend); 3740 } else { 3741 raw_ostream &OS = W.startLine(); 3742 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3743 << (!TargetName.empty() ? TargetName : "-") << " " 3744 << W.hex(Rel.r_addend) << "\n"; 3745 } 3746 } 3747 3748 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3749 ListScope SectionsD(W, "Sections"); 3750 3751 int SectionIndex = -1; 3752 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3753 ++SectionIndex; 3754 3755 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3756 3757 DictScope SectionD(W, "Section"); 3758 W.printNumber("Index", SectionIndex); 3759 W.printNumber("Name", Name, Sec.sh_name); 3760 W.printHex( 3761 "Type", 3762 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 3763 Sec.sh_type); 3764 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3765 std::end(ElfSectionFlags)); 3766 switch (Obj->getHeader()->e_machine) { 3767 case EM_ARM: 3768 SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags), 3769 std::end(ElfARMSectionFlags)); 3770 break; 3771 case EM_HEXAGON: 3772 SectionFlags.insert(SectionFlags.end(), 3773 std::begin(ElfHexagonSectionFlags), 3774 std::end(ElfHexagonSectionFlags)); 3775 break; 3776 case EM_MIPS: 3777 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3778 std::end(ElfMipsSectionFlags)); 3779 break; 3780 case EM_X86_64: 3781 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3782 std::end(ElfX86_64SectionFlags)); 3783 break; 3784 case EM_XCORE: 3785 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3786 std::end(ElfXCoreSectionFlags)); 3787 break; 3788 default: 3789 // Nothing to do. 3790 break; 3791 } 3792 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3793 W.printHex("Address", Sec.sh_addr); 3794 W.printHex("Offset", Sec.sh_offset); 3795 W.printNumber("Size", Sec.sh_size); 3796 W.printNumber("Link", Sec.sh_link); 3797 W.printNumber("Info", Sec.sh_info); 3798 W.printNumber("AddressAlignment", Sec.sh_addralign); 3799 W.printNumber("EntrySize", Sec.sh_entsize); 3800 3801 if (opts::SectionRelocations) { 3802 ListScope D(W, "Relocations"); 3803 printRelocations(&Sec, Obj); 3804 } 3805 3806 if (opts::SectionSymbols) { 3807 ListScope D(W, "Symbols"); 3808 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3809 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3810 3811 for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) { 3812 const Elf_Shdr *SymSec = unwrapOrError( 3813 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3814 if (SymSec == &Sec) 3815 printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(), 3816 StrTable, false); 3817 } 3818 } 3819 3820 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3821 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3822 W.printBinaryBlock("SectionData", 3823 StringRef((const char *)Data.data(), Data.size())); 3824 } 3825 } 3826 } 3827 3828 template <class ELFT> 3829 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3830 const Elf_Sym *First, StringRef StrTable, 3831 bool IsDynamic) { 3832 unsigned SectionIndex = 0; 3833 StringRef SectionName; 3834 getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(), 3835 SectionName, SectionIndex); 3836 std::string FullSymbolName = 3837 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3838 unsigned char SymbolType = Symbol->getType(); 3839 3840 DictScope D(W, "Symbol"); 3841 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3842 W.printHex("Value", Symbol->st_value); 3843 W.printNumber("Size", Symbol->st_size); 3844 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3845 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3846 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3847 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3848 else 3849 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3850 if (Symbol->st_other == 0) 3851 // Usually st_other flag is zero. Do not pollute the output 3852 // by flags enumeration in that case. 3853 W.printNumber("Other", 0); 3854 else { 3855 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3856 std::end(ElfSymOtherFlags)); 3857 if (Obj->getHeader()->e_machine == EM_MIPS) { 3858 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3859 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3860 // cases separately. 3861 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3862 SymOtherFlags.insert(SymOtherFlags.end(), 3863 std::begin(ElfMips16SymOtherFlags), 3864 std::end(ElfMips16SymOtherFlags)); 3865 else 3866 SymOtherFlags.insert(SymOtherFlags.end(), 3867 std::begin(ElfMipsSymOtherFlags), 3868 std::end(ElfMipsSymOtherFlags)); 3869 } 3870 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3871 } 3872 W.printHex("Section", SectionName, SectionIndex); 3873 } 3874 3875 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3876 ListScope Group(W, "Symbols"); 3877 this->dumper()->printSymbolsHelper(false); 3878 } 3879 3880 template <class ELFT> 3881 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3882 ListScope Group(W, "DynamicSymbols"); 3883 this->dumper()->printSymbolsHelper(true); 3884 } 3885 3886 template <class ELFT> 3887 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3888 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3889 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3890 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3891 if (DynRelRegion.Size && DynRelaRegion.Size) 3892 report_fatal_error("There are both REL and RELA dynamic relocations"); 3893 W.startLine() << "Dynamic Relocations {\n"; 3894 W.indent(); 3895 if (DynRelaRegion.Size > 0) 3896 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3897 printDynamicRelocation(Obj, Rela); 3898 else 3899 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3900 Elf_Rela Rela; 3901 Rela.r_offset = Rel.r_offset; 3902 Rela.r_info = Rel.r_info; 3903 Rela.r_addend = 0; 3904 printDynamicRelocation(Obj, Rela); 3905 } 3906 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3907 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3908 printDynamicRelocation(Obj, Rela); 3909 else 3910 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3911 Elf_Rela Rela; 3912 Rela.r_offset = Rel.r_offset; 3913 Rela.r_info = Rel.r_info; 3914 Rela.r_addend = 0; 3915 printDynamicRelocation(Obj, Rela); 3916 } 3917 W.unindent(); 3918 W.startLine() << "}\n"; 3919 } 3920 3921 template <class ELFT> 3922 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 3923 SmallString<32> RelocName; 3924 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3925 StringRef SymbolName; 3926 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 3927 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3928 SymbolName = 3929 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3930 if (opts::ExpandRelocs) { 3931 DictScope Group(W, "Relocation"); 3932 W.printHex("Offset", Rel.r_offset); 3933 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3934 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 3935 W.printHex("Addend", Rel.r_addend); 3936 } else { 3937 raw_ostream &OS = W.startLine(); 3938 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3939 << (!SymbolName.empty() ? SymbolName : "-") << " " 3940 << W.hex(Rel.r_addend) << "\n"; 3941 } 3942 } 3943 3944 template <class ELFT> 3945 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3946 ListScope L(W, "ProgramHeaders"); 3947 3948 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3949 DictScope P(W, "ProgramHeader"); 3950 W.printHex("Type", 3951 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 3952 Phdr.p_type); 3953 W.printHex("Offset", Phdr.p_offset); 3954 W.printHex("VirtualAddress", Phdr.p_vaddr); 3955 W.printHex("PhysicalAddress", Phdr.p_paddr); 3956 W.printNumber("FileSize", Phdr.p_filesz); 3957 W.printNumber("MemSize", Phdr.p_memsz); 3958 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 3959 W.printNumber("Alignment", Phdr.p_align); 3960 } 3961 } 3962 3963 template <class ELFT> 3964 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3965 W.startLine() << "Hash Histogram not implemented!\n"; 3966 } 3967 3968 template <class ELFT> 3969 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3970 W.startLine() << "printNotes not implemented!\n"; 3971 } 3972