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