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