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