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 "DwarfCFIEHPrinter.h" 17 #include "Error.h" 18 #include "ObjDumper.h" 19 #include "StackMapPrinter.h" 20 #include "llvm-readobj.h" 21 #include "llvm/ADT/ArrayRef.h" 22 #include "llvm/ADT/DenseMap.h" 23 #include "llvm/ADT/Optional.h" 24 #include "llvm/ADT/PointerIntPair.h" 25 #include "llvm/ADT/SmallString.h" 26 #include "llvm/ADT/SmallVector.h" 27 #include "llvm/ADT/STLExtras.h" 28 #include "llvm/ADT/StringExtras.h" 29 #include "llvm/ADT/StringRef.h" 30 #include "llvm/ADT/Twine.h" 31 #include "llvm/BinaryFormat/ELF.h" 32 #include "llvm/Object/ELF.h" 33 #include "llvm/Object/ELFObjectFile.h" 34 #include "llvm/Object/ELFTypes.h" 35 #include "llvm/Object/Error.h" 36 #include "llvm/Object/ObjectFile.h" 37 #include "llvm/Object/StackMapParser.h" 38 #include "llvm/Support/AMDGPUMetadata.h" 39 #include "llvm/Support/ARMAttributeParser.h" 40 #include "llvm/Support/ARMBuildAttributes.h" 41 #include "llvm/Support/Casting.h" 42 #include "llvm/Support/Compiler.h" 43 #include "llvm/Support/Endian.h" 44 #include "llvm/Support/ErrorHandling.h" 45 #include "llvm/Support/Format.h" 46 #include "llvm/Support/FormattedStream.h" 47 #include "llvm/Support/MathExtras.h" 48 #include "llvm/Support/MipsABIFlags.h" 49 #include "llvm/Support/ScopedPrinter.h" 50 #include "llvm/Support/raw_ostream.h" 51 #include <algorithm> 52 #include <cinttypes> 53 #include <cstddef> 54 #include <cstdint> 55 #include <cstdlib> 56 #include <iterator> 57 #include <memory> 58 #include <string> 59 #include <system_error> 60 #include <vector> 61 62 using namespace llvm; 63 using namespace llvm::object; 64 using namespace ELF; 65 66 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 67 case ns::enum: return #enum; 68 69 #define ENUM_ENT(enum, altName) \ 70 { #enum, altName, ELF::enum } 71 72 #define ENUM_ENT_1(enum) \ 73 { #enum, #enum, ELF::enum } 74 75 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 76 case ns::enum: \ 77 return std::string(#enum).substr(3); 78 79 #define TYPEDEF_ELF_TYPES(ELFT) \ 80 using ELFO = ELFFile<ELFT>; \ 81 using Elf_Addr = typename ELFT::Addr; \ 82 using Elf_Shdr = typename ELFT::Shdr; \ 83 using Elf_Sym = typename ELFT::Sym; \ 84 using Elf_Dyn = typename ELFT::Dyn; \ 85 using Elf_Dyn_Range = typename ELFT::DynRange; \ 86 using Elf_Rel = typename ELFT::Rel; \ 87 using Elf_Rela = typename ELFT::Rela; \ 88 using Elf_Rel_Range = typename ELFT::RelRange; \ 89 using Elf_Rela_Range = typename ELFT::RelaRange; \ 90 using Elf_Phdr = typename ELFT::Phdr; \ 91 using Elf_Half = typename ELFT::Half; \ 92 using Elf_Ehdr = typename ELFT::Ehdr; \ 93 using Elf_Word = typename ELFT::Word; \ 94 using Elf_Hash = typename ELFT::Hash; \ 95 using Elf_GnuHash = typename ELFT::GnuHash; \ 96 using Elf_Note = typename ELFT::Note; \ 97 using Elf_Sym_Range = typename ELFT::SymRange; \ 98 using Elf_Versym = typename ELFT::Versym; \ 99 using Elf_Verneed = typename ELFT::Verneed; \ 100 using Elf_Vernaux = typename ELFT::Vernaux; \ 101 using Elf_Verdef = typename ELFT::Verdef; \ 102 using Elf_Verdaux = typename ELFT::Verdaux; \ 103 using uintX_t = typename ELFT::uint; 104 105 namespace { 106 107 template <class ELFT> class DumpStyle; 108 109 /// Represents a contiguous uniform range in the file. We cannot just create a 110 /// range directly because when creating one of these from the .dynamic table 111 /// the size, entity size and virtual address are different entries in arbitrary 112 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 113 struct DynRegionInfo { 114 DynRegionInfo() = default; 115 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 116 : Addr(A), Size(S), EntSize(ES) {} 117 118 /// \brief Address in current address space. 119 const void *Addr = nullptr; 120 /// \brief Size in bytes of the region. 121 uint64_t Size = 0; 122 /// \brief Size of each entity in the region. 123 uint64_t EntSize = 0; 124 125 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 126 const Type *Start = reinterpret_cast<const Type *>(Addr); 127 if (!Start) 128 return {Start, Start}; 129 if (EntSize != sizeof(Type) || Size % EntSize) 130 reportError("Invalid entity size"); 131 return {Start, Start + (Size / EntSize)}; 132 } 133 }; 134 135 template<typename ELFT> 136 class ELFDumper : public ObjDumper { 137 public: 138 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 139 140 void printFileHeaders() override; 141 void printSections() override; 142 void printRelocations() override; 143 void printDynamicRelocations() override; 144 void printSymbols() override; 145 void printDynamicSymbols() override; 146 void printUnwindInfo() override; 147 148 void printDynamicTable() override; 149 void printNeededLibraries() override; 150 void printProgramHeaders() override; 151 void printHashTable() override; 152 void printGnuHashTable() override; 153 void printLoadName() override; 154 void printVersionInfo() override; 155 void printGroupSections() override; 156 157 void printAttributes() override; 158 void printMipsPLTGOT() override; 159 void printMipsABIFlags() override; 160 void printMipsReginfo() override; 161 void printMipsOptions() override; 162 163 void printStackMap() const override; 164 165 void printHashHistogram() override; 166 167 void printNotes() override; 168 169 void printELFLinkerOptions() override; 170 171 private: 172 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 173 174 TYPEDEF_ELF_TYPES(ELFT) 175 176 DynRegionInfo checkDRI(DynRegionInfo DRI) { 177 if (DRI.Addr < Obj->base() || 178 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 179 error(llvm::object::object_error::parse_failed); 180 return DRI; 181 } 182 183 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 184 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 185 } 186 187 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 188 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 189 } 190 191 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 192 193 void printValue(uint64_t Type, uint64_t Value); 194 195 StringRef getDynamicString(uint64_t Offset) const; 196 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 197 bool &IsDefault) const; 198 void LoadVersionMap() const; 199 void LoadVersionNeeds(const Elf_Shdr *ec) const; 200 void LoadVersionDefs(const Elf_Shdr *sec) const; 201 202 const ELFO *Obj; 203 DynRegionInfo DynRelRegion; 204 DynRegionInfo DynRelaRegion; 205 DynRegionInfo DynPLTRelRegion; 206 DynRegionInfo DynSymRegion; 207 DynRegionInfo DynamicTable; 208 StringRef DynamicStringTable; 209 StringRef SOName; 210 const Elf_Hash *HashTable = nullptr; 211 const Elf_GnuHash *GnuHashTable = nullptr; 212 const Elf_Shdr *DotSymtabSec = nullptr; 213 StringRef DynSymtabName; 214 ArrayRef<Elf_Word> ShndxTable; 215 216 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 217 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 218 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 219 220 // Records for each version index the corresponding Verdef or Vernaux entry. 221 // This is filled the first time LoadVersionMap() is called. 222 class VersionMapEntry : public PointerIntPair<const void *, 1> { 223 public: 224 // If the integer is 0, this is an Elf_Verdef*. 225 // If the integer is 1, this is an Elf_Vernaux*. 226 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 227 VersionMapEntry(const Elf_Verdef *verdef) 228 : PointerIntPair<const void *, 1>(verdef, 0) {} 229 VersionMapEntry(const Elf_Vernaux *vernaux) 230 : PointerIntPair<const void *, 1>(vernaux, 1) {} 231 232 bool isNull() const { return getPointer() == nullptr; } 233 bool isVerdef() const { return !isNull() && getInt() == 0; } 234 bool isVernaux() const { return !isNull() && getInt() == 1; } 235 const Elf_Verdef *getVerdef() const { 236 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 237 } 238 const Elf_Vernaux *getVernaux() const { 239 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 240 } 241 }; 242 mutable SmallVector<VersionMapEntry, 16> VersionMap; 243 244 public: 245 Elf_Dyn_Range dynamic_table() const { 246 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 247 } 248 249 Elf_Sym_Range dynamic_symbols() const { 250 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 251 } 252 253 Elf_Rel_Range dyn_rels() const; 254 Elf_Rela_Range dyn_relas() const; 255 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 256 bool IsDynamic) const; 257 void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym, 258 StringRef &SectionName, 259 unsigned &SectionIndex) const; 260 261 void printSymbolsHelper(bool IsDynamic) const; 262 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 263 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 264 StringRef getDynamicStringTable() const { return DynamicStringTable; } 265 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 266 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 267 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 268 const Elf_Hash *getHashTable() const { return HashTable; } 269 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 270 }; 271 272 template <class ELFT> 273 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 274 StringRef StrTable, SymtabName; 275 size_t Entries = 0; 276 Elf_Sym_Range Syms(nullptr, nullptr); 277 if (IsDynamic) { 278 StrTable = DynamicStringTable; 279 Syms = dynamic_symbols(); 280 SymtabName = DynSymtabName; 281 if (DynSymRegion.Addr) 282 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 283 } else { 284 if (!DotSymtabSec) 285 return; 286 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 287 Syms = unwrapOrError(Obj->symbols(DotSymtabSec)); 288 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 289 Entries = DotSymtabSec->getEntityCount(); 290 } 291 if (Syms.begin() == Syms.end()) 292 return; 293 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 294 for (const auto &Sym : Syms) 295 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 296 } 297 298 template <class ELFT> class MipsGOTParser; 299 300 template <typename ELFT> class DumpStyle { 301 public: 302 using Elf_Shdr = typename ELFT::Shdr; 303 using Elf_Sym = typename ELFT::Sym; 304 305 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 306 virtual ~DumpStyle() = default; 307 308 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 309 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 310 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 311 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 312 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 313 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 314 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 315 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 316 size_t Offset) {} 317 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 318 const Elf_Sym *FirstSym, StringRef StrTable, 319 bool IsDynamic) = 0; 320 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 321 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 322 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0; 323 virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0; 324 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; 325 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; 326 const ELFDumper<ELFT> *dumper() const { return Dumper; } 327 328 private: 329 const ELFDumper<ELFT> *Dumper; 330 }; 331 332 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 333 formatted_raw_ostream OS; 334 335 public: 336 TYPEDEF_ELF_TYPES(ELFT) 337 338 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 339 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 340 341 void printFileHeaders(const ELFO *Obj) override; 342 void printGroupSections(const ELFFile<ELFT> *Obj) override; 343 void printRelocations(const ELFO *Obj) override; 344 void printSections(const ELFO *Obj) override; 345 void printSymbols(const ELFO *Obj) override; 346 void printDynamicSymbols(const ELFO *Obj) override; 347 void printDynamicRelocations(const ELFO *Obj) override; 348 void printSymtabMessage(const ELFO *Obj, StringRef Name, 349 size_t Offset) override; 350 void printProgramHeaders(const ELFO *Obj) override; 351 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 352 void printNotes(const ELFFile<ELFT> *Obj) override; 353 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 354 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 355 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 356 357 private: 358 struct Field { 359 StringRef Str; 360 unsigned Column; 361 362 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 363 Field(unsigned Col) : Str(""), Column(Col) {} 364 }; 365 366 template <typename T, typename TEnum> 367 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 368 for (const auto &EnumItem : EnumValues) 369 if (EnumItem.Value == Value) 370 return EnumItem.AltName; 371 return to_hexString(Value, false); 372 } 373 374 formatted_raw_ostream &printField(struct Field F) { 375 if (F.Column != 0) 376 OS.PadToColumn(F.Column); 377 OS << F.Str; 378 OS.flush(); 379 return OS; 380 } 381 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym, 382 StringRef StrTable, uint32_t Bucket); 383 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 384 const Elf_Rela &R, bool IsRela); 385 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 386 StringRef StrTable, bool IsDynamic) override; 387 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 388 const Elf_Sym *FirstSym); 389 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 390 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 391 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 392 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 393 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 394 }; 395 396 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 397 public: 398 TYPEDEF_ELF_TYPES(ELFT) 399 400 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 401 : DumpStyle<ELFT>(Dumper), W(W) {} 402 403 void printFileHeaders(const ELFO *Obj) override; 404 void printGroupSections(const ELFFile<ELFT> *Obj) override; 405 void printRelocations(const ELFO *Obj) override; 406 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 407 void printSections(const ELFO *Obj) override; 408 void printSymbols(const ELFO *Obj) override; 409 void printDynamicSymbols(const ELFO *Obj) override; 410 void printDynamicRelocations(const ELFO *Obj) override; 411 void printProgramHeaders(const ELFO *Obj) override; 412 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 413 void printNotes(const ELFFile<ELFT> *Obj) override; 414 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 415 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 416 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 417 418 private: 419 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 420 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 421 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 422 StringRef StrTable, bool IsDynamic) override; 423 424 ScopedPrinter &W; 425 }; 426 427 } // end anonymous namespace 428 429 namespace llvm { 430 431 template <class ELFT> 432 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 433 ScopedPrinter &Writer, 434 std::unique_ptr<ObjDumper> &Result) { 435 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 436 return readobj_error::success; 437 } 438 439 std::error_code createELFDumper(const object::ObjectFile *Obj, 440 ScopedPrinter &Writer, 441 std::unique_ptr<ObjDumper> &Result) { 442 // Little-endian 32-bit 443 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 444 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 445 446 // Big-endian 32-bit 447 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 448 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 449 450 // Little-endian 64-bit 451 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 452 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 453 454 // Big-endian 64-bit 455 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 456 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 457 458 return readobj_error::unsupported_obj_file_format; 459 } 460 461 } // end namespace llvm 462 463 // Iterate through the versions needed section, and place each Elf_Vernaux 464 // in the VersionMap according to its index. 465 template <class ELFT> 466 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 467 unsigned vn_size = sec->sh_size; // Size of section in bytes 468 unsigned vn_count = sec->sh_info; // Number of Verneed entries 469 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 470 const char *sec_end = sec_start + vn_size; 471 // The first Verneed entry is at the start of the section. 472 const char *p = sec_start; 473 for (unsigned i = 0; i < vn_count; i++) { 474 if (p + sizeof(Elf_Verneed) > sec_end) 475 report_fatal_error("Section ended unexpectedly while scanning " 476 "version needed records."); 477 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 478 if (vn->vn_version != ELF::VER_NEED_CURRENT) 479 report_fatal_error("Unexpected verneed version"); 480 // Iterate through the Vernaux entries 481 const char *paux = p + vn->vn_aux; 482 for (unsigned j = 0; j < vn->vn_cnt; j++) { 483 if (paux + sizeof(Elf_Vernaux) > sec_end) 484 report_fatal_error("Section ended unexpected while scanning auxiliary " 485 "version needed records."); 486 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 487 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 488 if (index >= VersionMap.size()) 489 VersionMap.resize(index + 1); 490 VersionMap[index] = VersionMapEntry(vna); 491 paux += vna->vna_next; 492 } 493 p += vn->vn_next; 494 } 495 } 496 497 // Iterate through the version definitions, and place each Elf_Verdef 498 // in the VersionMap according to its index. 499 template <class ELFT> 500 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 501 unsigned vd_size = sec->sh_size; // Size of section in bytes 502 unsigned vd_count = sec->sh_info; // Number of Verdef entries 503 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 504 const char *sec_end = sec_start + vd_size; 505 // The first Verdef entry is at the start of the section. 506 const char *p = sec_start; 507 for (unsigned i = 0; i < vd_count; i++) { 508 if (p + sizeof(Elf_Verdef) > sec_end) 509 report_fatal_error("Section ended unexpectedly while scanning " 510 "version definitions."); 511 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 512 if (vd->vd_version != ELF::VER_DEF_CURRENT) 513 report_fatal_error("Unexpected verdef version"); 514 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 515 if (index >= VersionMap.size()) 516 VersionMap.resize(index + 1); 517 VersionMap[index] = VersionMapEntry(vd); 518 p += vd->vd_next; 519 } 520 } 521 522 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 523 // If there is no dynamic symtab or version table, there is nothing to do. 524 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 525 return; 526 527 // Has the VersionMap already been loaded? 528 if (VersionMap.size() > 0) 529 return; 530 531 // The first two version indexes are reserved. 532 // Index 0 is LOCAL, index 1 is GLOBAL. 533 VersionMap.push_back(VersionMapEntry()); 534 VersionMap.push_back(VersionMapEntry()); 535 536 if (dot_gnu_version_d_sec) 537 LoadVersionDefs(dot_gnu_version_d_sec); 538 539 if (dot_gnu_version_r_sec) 540 LoadVersionNeeds(dot_gnu_version_r_sec); 541 } 542 543 template <typename ELFO, class ELFT> 544 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 545 const typename ELFO::Elf_Shdr *Sec, 546 ScopedPrinter &W) { 547 DictScope SS(W, "Version symbols"); 548 if (!Sec) 549 return; 550 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 551 W.printNumber("Section Name", Name, Sec->sh_name); 552 W.printHex("Address", Sec->sh_addr); 553 W.printHex("Offset", Sec->sh_offset); 554 W.printNumber("Link", Sec->sh_link); 555 556 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 557 StringRef StrTable = Dumper->getDynamicStringTable(); 558 559 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 560 ListScope Syms(W, "Symbols"); 561 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 562 DictScope S(W, "Symbol"); 563 std::string FullSymbolName = 564 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 565 W.printNumber("Version", *P); 566 W.printString("Name", FullSymbolName); 567 P += sizeof(typename ELFO::Elf_Half); 568 } 569 } 570 571 static const EnumEntry<unsigned> SymVersionFlags[] = { 572 {"Base", "BASE", VER_FLG_BASE}, 573 {"Weak", "WEAK", VER_FLG_WEAK}, 574 {"Info", "INFO", VER_FLG_INFO}}; 575 576 template <typename ELFO, class ELFT> 577 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 578 const ELFO *Obj, 579 const typename ELFO::Elf_Shdr *Sec, 580 ScopedPrinter &W) { 581 using VerDef = typename ELFO::Elf_Verdef; 582 using VerdAux = typename ELFO::Elf_Verdaux; 583 584 DictScope SD(W, "SHT_GNU_verdef"); 585 if (!Sec) 586 return; 587 588 // The number of entries in the section SHT_GNU_verdef 589 // is determined by DT_VERDEFNUM tag. 590 unsigned VerDefsNum = 0; 591 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 592 if (Dyn.d_tag == DT_VERDEFNUM) 593 VerDefsNum = Dyn.d_un.d_val; 594 } 595 const uint8_t *SecStartAddress = 596 (const uint8_t *)Obj->base() + Sec->sh_offset; 597 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 598 const uint8_t *P = SecStartAddress; 599 const typename ELFO::Elf_Shdr *StrTab = 600 unwrapOrError(Obj->getSection(Sec->sh_link)); 601 602 while (VerDefsNum--) { 603 if (P + sizeof(VerDef) > SecEndAddress) 604 report_fatal_error("invalid offset in the section"); 605 606 auto *VD = reinterpret_cast<const VerDef *>(P); 607 DictScope Def(W, "Definition"); 608 W.printNumber("Version", VD->vd_version); 609 W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags)); 610 W.printNumber("Index", VD->vd_ndx); 611 W.printNumber("Hash", VD->vd_hash); 612 W.printString("Name", 613 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 614 VD->getAux()->vda_name))); 615 if (!VD->vd_cnt) 616 report_fatal_error("at least one definition string must exist"); 617 if (VD->vd_cnt > 2) 618 report_fatal_error("more than one predecessor is not expected"); 619 620 if (VD->vd_cnt == 2) { 621 const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next; 622 const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux); 623 W.printString("Predecessor", 624 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 625 Aux->vda_name))); 626 } 627 628 P += VD->vd_next; 629 } 630 } 631 632 template <typename ELFO, class ELFT> 633 static void printVersionDependencySection(ELFDumper<ELFT> *Dumper, 634 const ELFO *Obj, 635 const typename ELFO::Elf_Shdr *Sec, 636 ScopedPrinter &W) { 637 using VerNeed = typename ELFO::Elf_Verneed; 638 using VernAux = typename ELFO::Elf_Vernaux; 639 640 DictScope SD(W, "SHT_GNU_verneed"); 641 if (!Sec) 642 return; 643 644 unsigned VerNeedNum = 0; 645 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) 646 if (Dyn.d_tag == DT_VERNEEDNUM) 647 VerNeedNum = Dyn.d_un.d_val; 648 649 const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset; 650 const typename ELFO::Elf_Shdr *StrTab = 651 unwrapOrError(Obj->getSection(Sec->sh_link)); 652 653 const uint8_t *P = SecData; 654 for (unsigned I = 0; I < VerNeedNum; ++I) { 655 const VerNeed *Need = reinterpret_cast<const VerNeed *>(P); 656 DictScope Entry(W, "Dependency"); 657 W.printNumber("Version", Need->vn_version); 658 W.printNumber("Count", Need->vn_cnt); 659 W.printString("FileName", 660 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 661 Need->vn_file))); 662 663 const uint8_t *PAux = P + Need->vn_aux; 664 for (unsigned J = 0; J < Need->vn_cnt; ++J) { 665 const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux); 666 DictScope Entry(W, "Entry"); 667 W.printNumber("Hash", Aux->vna_hash); 668 W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags)); 669 W.printNumber("Index", Aux->vna_other); 670 W.printString("Name", 671 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 672 Aux->vna_name))); 673 PAux += Aux->vna_next; 674 } 675 P += Need->vn_next; 676 } 677 } 678 679 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 680 // Dump version symbol section. 681 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 682 683 // Dump version definition section. 684 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 685 686 // Dump version dependency section. 687 printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W); 688 } 689 690 template <typename ELFT> 691 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 692 const Elf_Sym *symb, 693 bool &IsDefault) const { 694 // This is a dynamic symbol. Look in the GNU symbol version table. 695 if (!dot_gnu_version_sec) { 696 // No version table. 697 IsDefault = false; 698 return StringRef(""); 699 } 700 701 // Determine the position in the symbol table of this entry. 702 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 703 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 704 sizeof(Elf_Sym); 705 706 // Get the corresponding version index entry 707 const Elf_Versym *vs = unwrapOrError( 708 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index)); 709 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 710 711 // Special markers for unversioned symbols. 712 if (version_index == ELF::VER_NDX_LOCAL || 713 version_index == ELF::VER_NDX_GLOBAL) { 714 IsDefault = false; 715 return StringRef(""); 716 } 717 718 // Lookup this symbol in the version table 719 LoadVersionMap(); 720 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 721 reportError("Invalid version entry"); 722 const VersionMapEntry &entry = VersionMap[version_index]; 723 724 // Get the version name string 725 size_t name_offset; 726 if (entry.isVerdef()) { 727 // The first Verdaux entry holds the name. 728 name_offset = entry.getVerdef()->getAux()->vda_name; 729 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 730 } else { 731 name_offset = entry.getVernaux()->vna_name; 732 IsDefault = false; 733 } 734 if (name_offset >= StrTab.size()) 735 reportError("Invalid string offset"); 736 return StringRef(StrTab.data() + name_offset); 737 } 738 739 template <typename ELFT> 740 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 741 StringRef StrTable, 742 bool IsDynamic) const { 743 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 744 if (!IsDynamic) 745 return SymbolName; 746 747 std::string FullSymbolName(SymbolName); 748 749 bool IsDefault; 750 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 751 FullSymbolName += (IsDefault ? "@@" : "@"); 752 FullSymbolName += Version; 753 return FullSymbolName; 754 } 755 756 template <typename ELFT> 757 void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol, 758 const Elf_Sym *FirstSym, 759 StringRef &SectionName, 760 unsigned &SectionIndex) const { 761 SectionIndex = Symbol->st_shndx; 762 if (Symbol->isUndefined()) 763 SectionName = "Undefined"; 764 else if (Symbol->isProcessorSpecific()) 765 SectionName = "Processor Specific"; 766 else if (Symbol->isOSSpecific()) 767 SectionName = "Operating System Specific"; 768 else if (Symbol->isAbsolute()) 769 SectionName = "Absolute"; 770 else if (Symbol->isCommon()) 771 SectionName = "Common"; 772 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 773 SectionName = "Reserved"; 774 else { 775 if (SectionIndex == SHN_XINDEX) 776 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 777 Symbol, FirstSym, ShndxTable)); 778 const typename ELFT::Shdr *Sec = 779 unwrapOrError(Obj->getSection(SectionIndex)); 780 SectionName = unwrapOrError(Obj->getSectionName(Sec)); 781 } 782 } 783 784 template <class ELFO> 785 static const typename ELFO::Elf_Shdr * 786 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 787 for (const auto &Shdr : unwrapOrError(Obj->sections())) 788 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 789 return &Shdr; 790 return nullptr; 791 } 792 793 template <class ELFO> 794 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 795 StringRef Name) { 796 for (const auto &Shdr : unwrapOrError(Obj.sections())) { 797 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 798 return &Shdr; 799 } 800 return nullptr; 801 } 802 803 static const EnumEntry<unsigned> ElfClass[] = { 804 {"None", "none", ELF::ELFCLASSNONE}, 805 {"32-bit", "ELF32", ELF::ELFCLASS32}, 806 {"64-bit", "ELF64", ELF::ELFCLASS64}, 807 }; 808 809 static const EnumEntry<unsigned> ElfDataEncoding[] = { 810 {"None", "none", ELF::ELFDATANONE}, 811 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 812 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 813 }; 814 815 static const EnumEntry<unsigned> ElfObjectFileType[] = { 816 {"None", "NONE (none)", ELF::ET_NONE}, 817 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 818 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 819 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 820 {"Core", "CORE (Core file)", ELF::ET_CORE}, 821 }; 822 823 static const EnumEntry<unsigned> ElfOSABI[] = { 824 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 825 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 826 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 827 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 828 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 829 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 830 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 831 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 832 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 833 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 834 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 835 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 836 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 837 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 838 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 839 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 840 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 841 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 842 }; 843 844 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 845 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 846 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 847 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 848 }; 849 850 static const EnumEntry<unsigned> ARMElfOSABI[] = { 851 {"ARM", "ARM", ELF::ELFOSABI_ARM} 852 }; 853 854 static const EnumEntry<unsigned> C6000ElfOSABI[] = { 855 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 856 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 857 }; 858 859 static const EnumEntry<unsigned> ElfMachineType[] = { 860 ENUM_ENT(EM_NONE, "None"), 861 ENUM_ENT(EM_M32, "WE32100"), 862 ENUM_ENT(EM_SPARC, "Sparc"), 863 ENUM_ENT(EM_386, "Intel 80386"), 864 ENUM_ENT(EM_68K, "MC68000"), 865 ENUM_ENT(EM_88K, "MC88000"), 866 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 867 ENUM_ENT(EM_860, "Intel 80860"), 868 ENUM_ENT(EM_MIPS, "MIPS R3000"), 869 ENUM_ENT(EM_S370, "IBM System/370"), 870 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 871 ENUM_ENT(EM_PARISC, "HPPA"), 872 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 873 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 874 ENUM_ENT(EM_960, "Intel 80960"), 875 ENUM_ENT(EM_PPC, "PowerPC"), 876 ENUM_ENT(EM_PPC64, "PowerPC64"), 877 ENUM_ENT(EM_S390, "IBM S/390"), 878 ENUM_ENT(EM_SPU, "SPU"), 879 ENUM_ENT(EM_V800, "NEC V800 series"), 880 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 881 ENUM_ENT(EM_RH32, "TRW RH-32"), 882 ENUM_ENT(EM_RCE, "Motorola RCE"), 883 ENUM_ENT(EM_ARM, "ARM"), 884 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 885 ENUM_ENT(EM_SH, "Hitachi SH"), 886 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 887 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 888 ENUM_ENT(EM_ARC, "ARC"), 889 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 890 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 891 ENUM_ENT(EM_H8S, "Hitachi H8S"), 892 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 893 ENUM_ENT(EM_IA_64, "Intel IA-64"), 894 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 895 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 896 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 897 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 898 ENUM_ENT(EM_PCP, "Siemens PCP"), 899 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 900 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 901 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 902 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 903 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 904 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 905 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 906 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 907 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 908 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 909 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 910 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 911 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 912 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 913 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 914 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 915 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 916 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 917 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 918 ENUM_ENT(EM_VAX, "Digital VAX"), 919 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 920 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 921 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 922 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 923 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 924 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 925 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 926 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 927 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 928 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 929 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 930 ENUM_ENT(EM_V850, "NEC v850"), 931 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 932 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 933 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 934 ENUM_ENT(EM_PJ, "picoJava"), 935 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 936 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 937 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 938 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 939 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 940 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 941 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 942 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 943 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 944 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 945 ENUM_ENT(EM_MAX, "MAX Processor"), 946 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 947 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 948 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 949 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 950 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 951 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 952 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 953 ENUM_ENT(EM_UNICORE, "Unicore"), 954 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 955 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 956 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 957 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 958 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 959 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 960 ENUM_ENT(EM_M16C, "Renesas M16C"), 961 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 962 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 963 ENUM_ENT(EM_M32C, "Renesas M32C"), 964 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 965 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 966 ENUM_ENT(EM_SHARC, "EM_SHARC"), 967 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 968 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 969 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 970 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 971 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 972 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 973 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 974 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 975 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 976 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 977 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 978 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 979 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 980 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 981 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 982 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 983 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 984 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 985 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 986 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 987 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 988 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 989 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 990 ENUM_ENT(EM_RX, "Renesas RX"), 991 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 992 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 993 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 994 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 995 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 996 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 997 ENUM_ENT(EM_L10M, "EM_L10M"), 998 ENUM_ENT(EM_K10M, "EM_K10M"), 999 ENUM_ENT(EM_AARCH64, "AArch64"), 1000 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 1001 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 1002 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 1003 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 1004 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 1005 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 1006 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 1007 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 1008 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 1009 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 1010 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 1011 ENUM_ENT(EM_RL78, "Renesas RL78"), 1012 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 1013 ENUM_ENT(EM_78KOR, "EM_78KOR"), 1014 ENUM_ENT(EM_56800EX, "EM_56800EX"), 1015 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 1016 ENUM_ENT(EM_RISCV, "RISC-V"), 1017 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 1018 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1019 ENUM_ENT(EM_BPF, "EM_BPF"), 1020 }; 1021 1022 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 1023 {"Local", "LOCAL", ELF::STB_LOCAL}, 1024 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1025 {"Weak", "WEAK", ELF::STB_WEAK}, 1026 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1027 1028 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1029 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1030 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1031 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1032 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1033 1034 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 1035 {"None", "NOTYPE", ELF::STT_NOTYPE}, 1036 {"Object", "OBJECT", ELF::STT_OBJECT}, 1037 {"Function", "FUNC", ELF::STT_FUNC}, 1038 {"Section", "SECTION", ELF::STT_SECTION}, 1039 {"File", "FILE", ELF::STT_FILE}, 1040 {"Common", "COMMON", ELF::STT_COMMON}, 1041 {"TLS", "TLS", ELF::STT_TLS}, 1042 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 1043 1044 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1045 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1046 }; 1047 1048 static const char *getGroupType(uint32_t Flag) { 1049 if (Flag & ELF::GRP_COMDAT) 1050 return "COMDAT"; 1051 else 1052 return "(unknown)"; 1053 } 1054 1055 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1056 ENUM_ENT(SHF_WRITE, "W"), 1057 ENUM_ENT(SHF_ALLOC, "A"), 1058 ENUM_ENT(SHF_EXCLUDE, "E"), 1059 ENUM_ENT(SHF_EXECINSTR, "X"), 1060 ENUM_ENT(SHF_MERGE, "M"), 1061 ENUM_ENT(SHF_STRINGS, "S"), 1062 ENUM_ENT(SHF_INFO_LINK, "I"), 1063 ENUM_ENT(SHF_LINK_ORDER, "L"), 1064 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 1065 ENUM_ENT(SHF_GROUP, "G"), 1066 ENUM_ENT(SHF_TLS, "T"), 1067 ENUM_ENT(SHF_MASKOS, "o"), 1068 ENUM_ENT(SHF_MASKPROC, "p"), 1069 ENUM_ENT_1(SHF_COMPRESSED), 1070 }; 1071 1072 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1073 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1074 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1075 }; 1076 1077 static const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1078 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE) 1079 }; 1080 1081 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1082 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1083 }; 1084 1085 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1086 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1087 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1088 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1089 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1090 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1091 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1092 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1093 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1094 }; 1095 1096 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1097 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1098 }; 1099 1100 static std::string getGNUFlags(uint64_t Flags) { 1101 std::string Str; 1102 for (auto Entry : ElfSectionFlags) { 1103 uint64_t Flag = Entry.Value & Flags; 1104 Flags &= ~Entry.Value; 1105 switch (Flag) { 1106 case ELF::SHF_WRITE: 1107 case ELF::SHF_ALLOC: 1108 case ELF::SHF_EXECINSTR: 1109 case ELF::SHF_MERGE: 1110 case ELF::SHF_STRINGS: 1111 case ELF::SHF_INFO_LINK: 1112 case ELF::SHF_LINK_ORDER: 1113 case ELF::SHF_OS_NONCONFORMING: 1114 case ELF::SHF_GROUP: 1115 case ELF::SHF_TLS: 1116 case ELF::SHF_EXCLUDE: 1117 Str += Entry.AltName; 1118 break; 1119 default: 1120 if (Flag & ELF::SHF_MASKOS) 1121 Str += "o"; 1122 else if (Flag & ELF::SHF_MASKPROC) 1123 Str += "p"; 1124 else if (Flag) 1125 Str += "x"; 1126 } 1127 } 1128 return Str; 1129 } 1130 1131 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1132 // Check potentially overlapped processor-specific 1133 // program header type. 1134 switch (Arch) { 1135 case ELF::EM_ARM: 1136 switch (Type) { 1137 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1138 } 1139 case ELF::EM_MIPS: 1140 case ELF::EM_MIPS_RS3_LE: 1141 switch (Type) { 1142 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1143 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1144 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1145 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1146 } 1147 } 1148 1149 switch (Type) { 1150 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1151 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1152 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1153 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1154 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1155 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1156 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1157 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1158 1159 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1160 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1161 1162 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1163 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1164 1165 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1166 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1167 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1168 1169 default: return ""; 1170 } 1171 } 1172 1173 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1174 switch (Type) { 1175 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1176 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1177 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1178 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1179 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1180 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1181 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1182 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1183 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1184 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1185 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1186 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1187 default: 1188 // All machine specific PT_* types 1189 switch (Arch) { 1190 case ELF::EM_ARM: 1191 if (Type == ELF::PT_ARM_EXIDX) 1192 return "EXIDX"; 1193 return ""; 1194 case ELF::EM_MIPS: 1195 case ELF::EM_MIPS_RS3_LE: 1196 switch (Type) { 1197 case PT_MIPS_REGINFO: 1198 return "REGINFO"; 1199 case PT_MIPS_RTPROC: 1200 return "RTPROC"; 1201 case PT_MIPS_OPTIONS: 1202 return "OPTIONS"; 1203 case PT_MIPS_ABIFLAGS: 1204 return "ABIFLAGS"; 1205 } 1206 return ""; 1207 } 1208 } 1209 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1210 } 1211 1212 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1213 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1214 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1215 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1216 }; 1217 1218 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1219 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1220 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1221 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1222 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1223 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1224 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1225 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1226 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1227 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1228 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1229 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1230 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1231 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1232 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1233 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1234 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1235 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1236 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1237 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1238 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1239 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1240 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1241 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1242 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1243 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1244 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1245 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1246 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1247 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1248 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1249 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1250 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1251 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1252 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1253 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1254 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1255 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1256 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1257 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1258 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1259 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1260 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1261 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1262 }; 1263 1264 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { 1265 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), 1266 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), 1267 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), 1268 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), 1269 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), 1270 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), 1271 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), 1272 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), 1273 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), 1274 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), 1275 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), 1276 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), 1277 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), 1278 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), 1279 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), 1280 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), 1281 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), 1282 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), 1283 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), 1284 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), 1285 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), 1286 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), 1287 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), 1288 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), 1289 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), 1290 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), 1291 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), 1292 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), 1293 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), 1294 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), 1295 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK) 1296 }; 1297 1298 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1299 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVC), 1300 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_SINGLE), 1301 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_DOUBLE), 1302 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_QUAD), 1303 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVE) 1304 }; 1305 1306 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1307 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1308 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1309 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1310 }; 1311 1312 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1313 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1314 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1315 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1316 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1317 }; 1318 1319 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1320 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1321 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1322 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1323 }; 1324 1325 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1326 switch (Odk) { 1327 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1328 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1329 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1330 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1331 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1332 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1333 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1334 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1335 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1336 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1337 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1338 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1339 default: 1340 return "Unknown"; 1341 } 1342 } 1343 1344 template <typename ELFT> 1345 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1346 : ObjDumper(Writer), Obj(Obj) { 1347 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1348 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 1349 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1350 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1351 continue; 1352 } 1353 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1354 continue; 1355 LoadSegments.push_back(&Phdr); 1356 } 1357 1358 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1359 switch (Sec.sh_type) { 1360 case ELF::SHT_SYMTAB: 1361 if (DotSymtabSec != nullptr) 1362 reportError("Multiple SHT_SYMTAB"); 1363 DotSymtabSec = &Sec; 1364 break; 1365 case ELF::SHT_DYNSYM: 1366 if (DynSymRegion.Size) 1367 reportError("Multiple SHT_DYNSYM"); 1368 DynSymRegion = createDRIFrom(&Sec); 1369 // This is only used (if Elf_Shdr present)for naming section in GNU style 1370 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1371 DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec)); 1372 break; 1373 case ELF::SHT_SYMTAB_SHNDX: 1374 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1375 break; 1376 case ELF::SHT_GNU_versym: 1377 if (dot_gnu_version_sec != nullptr) 1378 reportError("Multiple SHT_GNU_versym"); 1379 dot_gnu_version_sec = &Sec; 1380 break; 1381 case ELF::SHT_GNU_verdef: 1382 if (dot_gnu_version_d_sec != nullptr) 1383 reportError("Multiple SHT_GNU_verdef"); 1384 dot_gnu_version_d_sec = &Sec; 1385 break; 1386 case ELF::SHT_GNU_verneed: 1387 if (dot_gnu_version_r_sec != nullptr) 1388 reportError("Multiple SHT_GNU_verneed"); 1389 dot_gnu_version_r_sec = &Sec; 1390 break; 1391 } 1392 } 1393 1394 parseDynamicTable(LoadSegments); 1395 1396 if (opts::Output == opts::GNU) 1397 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1398 else 1399 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1400 } 1401 1402 template <typename ELFT> 1403 void ELFDumper<ELFT>::parseDynamicTable( 1404 ArrayRef<const Elf_Phdr *> LoadSegments) { 1405 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1406 const Elf_Phdr *const *I = 1407 std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr, 1408 [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) { 1409 return VAddr < Phdr->p_vaddr; 1410 }); 1411 if (I == LoadSegments.begin()) 1412 report_fatal_error("Virtual address is not in any segment"); 1413 --I; 1414 const Elf_Phdr &Phdr = **I; 1415 uint64_t Delta = VAddr - Phdr.p_vaddr; 1416 if (Delta >= Phdr.p_filesz) 1417 report_fatal_error("Virtual address is not in any segment"); 1418 return Obj->base() + Phdr.p_offset + Delta; 1419 }; 1420 1421 uint64_t SONameOffset = 0; 1422 const char *StringTableBegin = nullptr; 1423 uint64_t StringTableSize = 0; 1424 for (const Elf_Dyn &Dyn : dynamic_table()) { 1425 switch (Dyn.d_tag) { 1426 case ELF::DT_HASH: 1427 HashTable = 1428 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1429 break; 1430 case ELF::DT_GNU_HASH: 1431 GnuHashTable = 1432 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1433 break; 1434 case ELF::DT_STRTAB: 1435 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1436 break; 1437 case ELF::DT_STRSZ: 1438 StringTableSize = Dyn.getVal(); 1439 break; 1440 case ELF::DT_SYMTAB: 1441 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1442 DynSymRegion.EntSize = sizeof(Elf_Sym); 1443 break; 1444 case ELF::DT_RELA: 1445 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1446 break; 1447 case ELF::DT_RELASZ: 1448 DynRelaRegion.Size = Dyn.getVal(); 1449 break; 1450 case ELF::DT_RELAENT: 1451 DynRelaRegion.EntSize = Dyn.getVal(); 1452 break; 1453 case ELF::DT_SONAME: 1454 SONameOffset = Dyn.getVal(); 1455 break; 1456 case ELF::DT_REL: 1457 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1458 break; 1459 case ELF::DT_RELSZ: 1460 DynRelRegion.Size = Dyn.getVal(); 1461 break; 1462 case ELF::DT_RELENT: 1463 DynRelRegion.EntSize = Dyn.getVal(); 1464 break; 1465 case ELF::DT_PLTREL: 1466 if (Dyn.getVal() == DT_REL) 1467 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1468 else if (Dyn.getVal() == DT_RELA) 1469 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1470 else 1471 reportError(Twine("unknown DT_PLTREL value of ") + 1472 Twine((uint64_t)Dyn.getVal())); 1473 break; 1474 case ELF::DT_JMPREL: 1475 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1476 break; 1477 case ELF::DT_PLTRELSZ: 1478 DynPLTRelRegion.Size = Dyn.getVal(); 1479 break; 1480 } 1481 } 1482 if (StringTableBegin) 1483 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1484 if (SONameOffset) 1485 SOName = getDynamicString(SONameOffset); 1486 } 1487 1488 template <typename ELFT> 1489 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1490 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1491 } 1492 1493 template <typename ELFT> 1494 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1495 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1496 } 1497 1498 template<class ELFT> 1499 void ELFDumper<ELFT>::printFileHeaders() { 1500 ELFDumperStyle->printFileHeaders(Obj); 1501 } 1502 1503 template<class ELFT> 1504 void ELFDumper<ELFT>::printSections() { 1505 ELFDumperStyle->printSections(Obj); 1506 } 1507 1508 template<class ELFT> 1509 void ELFDumper<ELFT>::printRelocations() { 1510 ELFDumperStyle->printRelocations(Obj); 1511 } 1512 1513 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1514 ELFDumperStyle->printProgramHeaders(Obj); 1515 } 1516 1517 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1518 ELFDumperStyle->printDynamicRelocations(Obj); 1519 } 1520 1521 template<class ELFT> 1522 void ELFDumper<ELFT>::printSymbols() { 1523 ELFDumperStyle->printSymbols(Obj); 1524 } 1525 1526 template<class ELFT> 1527 void ELFDumper<ELFT>::printDynamicSymbols() { 1528 ELFDumperStyle->printDynamicSymbols(Obj); 1529 } 1530 1531 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1532 ELFDumperStyle->printHashHistogram(Obj); 1533 } 1534 1535 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 1536 ELFDumperStyle->printNotes(Obj); 1537 } 1538 1539 template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() { 1540 ELFDumperStyle->printELFLinkerOptions(Obj); 1541 } 1542 1543 static const char *getTypeString(unsigned Arch, uint64_t Type) { 1544 #define DYNAMIC_TAG(n, v) 1545 switch (Arch) { 1546 case EM_HEXAGON: 1547 switch (Type) { 1548 #define HEXAGON_DYNAMIC_TAG(name, value) \ 1549 case DT_##name: \ 1550 return #name; 1551 #include "llvm/BinaryFormat/DynamicTags.def" 1552 #undef HEXAGON_DYNAMIC_TAG 1553 } 1554 case EM_MIPS: 1555 switch (Type) { 1556 #define MIPS_DYNAMIC_TAG(name, value) \ 1557 case DT_##name: \ 1558 return #name; 1559 #include "llvm/BinaryFormat/DynamicTags.def" 1560 #undef MIPS_DYNAMIC_TAG 1561 } 1562 } 1563 #undef DYNAMIC_TAG 1564 switch (Type) { 1565 // Now handle all dynamic tags except the architecture specific ones 1566 #define MIPS_DYNAMIC_TAG(name, value) 1567 #define HEXAGON_DYNAMIC_TAG(name, value) 1568 // Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc. 1569 #define DYNAMIC_TAG_MARKER(name, value) 1570 #define DYNAMIC_TAG(name, value) \ 1571 case DT_##name: \ 1572 return #name; 1573 #include "llvm/BinaryFormat/DynamicTags.def" 1574 #undef DYNAMIC_TAG 1575 #undef MIPS_DYNAMIC_TAG 1576 #undef HEXAGON_DYNAMIC_TAG 1577 #undef DYNAMIC_TAG_MARKER 1578 default: return "unknown"; 1579 } 1580 } 1581 1582 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1583 { #enum, prefix##_##enum } 1584 1585 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1586 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1587 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1588 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1589 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1590 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1591 }; 1592 1593 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1594 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1595 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1596 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1597 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1598 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1599 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1600 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1601 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1602 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1603 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1604 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1605 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1606 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1607 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1608 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1609 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1610 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1611 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1612 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1613 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1614 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1615 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1616 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1617 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1618 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1619 }; 1620 1621 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1622 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1623 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1624 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1625 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1626 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1627 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1628 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1629 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1630 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1631 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1632 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1633 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1634 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1635 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1636 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1637 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1638 }; 1639 1640 #undef LLVM_READOBJ_DT_FLAG_ENT 1641 1642 template <typename T, typename TFlag> 1643 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1644 using FlagEntry = EnumEntry<TFlag>; 1645 using FlagVector = SmallVector<FlagEntry, 10>; 1646 FlagVector SetFlags; 1647 1648 for (const auto &Flag : Flags) { 1649 if (Flag.Value == 0) 1650 continue; 1651 1652 if ((Value & Flag.Value) == Flag.Value) 1653 SetFlags.push_back(Flag); 1654 } 1655 1656 for (const auto &Flag : SetFlags) { 1657 OS << Flag.Name << " "; 1658 } 1659 } 1660 1661 template <class ELFT> 1662 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1663 if (Value >= DynamicStringTable.size()) 1664 reportError("Invalid dynamic string table reference"); 1665 return StringRef(DynamicStringTable.data() + Value); 1666 } 1667 1668 static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) { 1669 OS << Tag << ": [" << Name << "]"; 1670 } 1671 1672 template <class ELFT> 1673 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1674 raw_ostream &OS = W.getOStream(); 1675 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1676 switch (Type) { 1677 case DT_PLTREL: 1678 if (Value == DT_REL) { 1679 OS << "REL"; 1680 break; 1681 } else if (Value == DT_RELA) { 1682 OS << "RELA"; 1683 break; 1684 } 1685 LLVM_FALLTHROUGH; 1686 case DT_PLTGOT: 1687 case DT_HASH: 1688 case DT_STRTAB: 1689 case DT_SYMTAB: 1690 case DT_RELA: 1691 case DT_INIT: 1692 case DT_FINI: 1693 case DT_REL: 1694 case DT_JMPREL: 1695 case DT_INIT_ARRAY: 1696 case DT_FINI_ARRAY: 1697 case DT_PREINIT_ARRAY: 1698 case DT_DEBUG: 1699 case DT_VERDEF: 1700 case DT_VERNEED: 1701 case DT_VERSYM: 1702 case DT_GNU_HASH: 1703 case DT_NULL: 1704 case DT_MIPS_BASE_ADDRESS: 1705 case DT_MIPS_GOTSYM: 1706 case DT_MIPS_RLD_MAP: 1707 case DT_MIPS_RLD_MAP_REL: 1708 case DT_MIPS_PLTGOT: 1709 case DT_MIPS_OPTIONS: 1710 OS << format(ConvChar, Value); 1711 break; 1712 case DT_RELACOUNT: 1713 case DT_RELCOUNT: 1714 case DT_VERDEFNUM: 1715 case DT_VERNEEDNUM: 1716 case DT_MIPS_RLD_VERSION: 1717 case DT_MIPS_LOCAL_GOTNO: 1718 case DT_MIPS_SYMTABNO: 1719 case DT_MIPS_UNREFEXTNO: 1720 OS << Value; 1721 break; 1722 case DT_PLTRELSZ: 1723 case DT_RELASZ: 1724 case DT_RELAENT: 1725 case DT_STRSZ: 1726 case DT_SYMENT: 1727 case DT_RELSZ: 1728 case DT_RELENT: 1729 case DT_INIT_ARRAYSZ: 1730 case DT_FINI_ARRAYSZ: 1731 case DT_PREINIT_ARRAYSZ: 1732 case DT_ANDROID_RELSZ: 1733 case DT_ANDROID_RELASZ: 1734 OS << Value << " (bytes)"; 1735 break; 1736 case DT_NEEDED: 1737 printLibrary(OS, "Shared library", getDynamicString(Value)); 1738 break; 1739 case DT_SONAME: 1740 printLibrary(OS, "Library soname", getDynamicString(Value)); 1741 break; 1742 case DT_AUXILIARY: 1743 printLibrary(OS, "Auxiliary library", getDynamicString(Value)); 1744 break; 1745 case DT_FILTER: 1746 printLibrary(OS, "Filter library", getDynamicString(Value)); 1747 break; 1748 case DT_RPATH: 1749 case DT_RUNPATH: 1750 OS << getDynamicString(Value); 1751 break; 1752 case DT_MIPS_FLAGS: 1753 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1754 break; 1755 case DT_FLAGS: 1756 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1757 break; 1758 case DT_FLAGS_1: 1759 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1760 break; 1761 default: 1762 OS << format(ConvChar, Value); 1763 break; 1764 } 1765 } 1766 1767 template<class ELFT> 1768 void ELFDumper<ELFT>::printUnwindInfo() { 1769 const unsigned Machine = Obj->getHeader()->e_machine; 1770 if (Machine == EM_386 || Machine == EM_X86_64) { 1771 DwarfCFIEH::PrinterContext<ELFT> Ctx(W, Obj); 1772 return Ctx.printUnwindInformation(); 1773 } 1774 W.startLine() << "UnwindInfo not implemented.\n"; 1775 } 1776 1777 namespace { 1778 1779 template <> void ELFDumper<ELF32LE>::printUnwindInfo() { 1780 const unsigned Machine = Obj->getHeader()->e_machine; 1781 if (Machine == EM_ARM) { 1782 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, DotSymtabSec); 1783 return Ctx.PrintUnwindInformation(); 1784 } 1785 W.startLine() << "UnwindInfo not implemented.\n"; 1786 } 1787 1788 } // end anonymous namespace 1789 1790 template<class ELFT> 1791 void ELFDumper<ELFT>::printDynamicTable() { 1792 auto I = dynamic_table().begin(); 1793 auto E = dynamic_table().end(); 1794 1795 if (I == E) 1796 return; 1797 1798 --E; 1799 while (I != E && E->getTag() == ELF::DT_NULL) 1800 --E; 1801 if (E->getTag() != ELF::DT_NULL) 1802 ++E; 1803 ++E; 1804 1805 ptrdiff_t Total = std::distance(I, E); 1806 if (Total == 0) 1807 return; 1808 1809 raw_ostream &OS = W.getOStream(); 1810 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1811 1812 bool Is64 = ELFT::Is64Bits; 1813 1814 W.startLine() 1815 << " Tag" << (Is64 ? " " : " ") << "Type" 1816 << " " << "Name/Value\n"; 1817 while (I != E) { 1818 const Elf_Dyn &Entry = *I; 1819 uintX_t Tag = Entry.getTag(); 1820 ++I; 1821 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1822 << format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag)); 1823 printValue(Tag, Entry.getVal()); 1824 OS << "\n"; 1825 } 1826 1827 W.startLine() << "]\n"; 1828 } 1829 1830 template<class ELFT> 1831 void ELFDumper<ELFT>::printNeededLibraries() { 1832 ListScope D(W, "NeededLibraries"); 1833 1834 using LibsTy = std::vector<StringRef>; 1835 LibsTy Libs; 1836 1837 for (const auto &Entry : dynamic_table()) 1838 if (Entry.d_tag == ELF::DT_NEEDED) 1839 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1840 1841 std::stable_sort(Libs.begin(), Libs.end()); 1842 1843 for (const auto &L : Libs) 1844 W.startLine() << L << "\n"; 1845 } 1846 1847 1848 template <typename ELFT> 1849 void ELFDumper<ELFT>::printHashTable() { 1850 DictScope D(W, "HashTable"); 1851 if (!HashTable) 1852 return; 1853 W.printNumber("Num Buckets", HashTable->nbucket); 1854 W.printNumber("Num Chains", HashTable->nchain); 1855 W.printList("Buckets", HashTable->buckets()); 1856 W.printList("Chains", HashTable->chains()); 1857 } 1858 1859 template <typename ELFT> 1860 void ELFDumper<ELFT>::printGnuHashTable() { 1861 DictScope D(W, "GnuHashTable"); 1862 if (!GnuHashTable) 1863 return; 1864 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1865 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1866 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1867 W.printNumber("Shift Count", GnuHashTable->shift2); 1868 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1869 W.printList("Buckets", GnuHashTable->buckets()); 1870 Elf_Sym_Range Syms = dynamic_symbols(); 1871 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1872 if (!NumSyms) 1873 reportError("No dynamic symbol section"); 1874 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1875 } 1876 1877 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1878 W.printString("LoadName", SOName); 1879 } 1880 1881 template <class ELFT> 1882 void ELFDumper<ELFT>::printAttributes() { 1883 W.startLine() << "Attributes not implemented.\n"; 1884 } 1885 1886 namespace { 1887 1888 template <> void ELFDumper<ELF32LE>::printAttributes() { 1889 if (Obj->getHeader()->e_machine != EM_ARM) { 1890 W.startLine() << "Attributes not implemented.\n"; 1891 return; 1892 } 1893 1894 DictScope BA(W, "BuildAttributes"); 1895 for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1896 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1897 continue; 1898 1899 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1900 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1901 errs() << "unrecognised FormatVersion: 0x" 1902 << Twine::utohexstr(Contents[0]) << '\n'; 1903 continue; 1904 } 1905 1906 W.printHex("FormatVersion", Contents[0]); 1907 if (Contents.size() == 1) 1908 continue; 1909 1910 ARMAttributeParser(&W).Parse(Contents, true); 1911 } 1912 } 1913 1914 template <class ELFT> class MipsGOTParser { 1915 public: 1916 TYPEDEF_ELF_TYPES(ELFT) 1917 using Entry = typename ELFO::Elf_Addr; 1918 using Entries = ArrayRef<Entry>; 1919 1920 const bool IsStatic; 1921 const ELFO * const Obj; 1922 1923 MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); 1924 1925 bool hasGot() const { return !GotEntries.empty(); } 1926 bool hasPlt() const { return !PltEntries.empty(); } 1927 1928 uint64_t getGp() const; 1929 1930 const Entry *getGotLazyResolver() const; 1931 const Entry *getGotModulePointer() const; 1932 const Entry *getPltLazyResolver() const; 1933 const Entry *getPltModulePointer() const; 1934 1935 Entries getLocalEntries() const; 1936 Entries getGlobalEntries() const; 1937 Entries getOtherEntries() const; 1938 Entries getPltEntries() const; 1939 1940 uint64_t getGotAddress(const Entry * E) const; 1941 int64_t getGotOffset(const Entry * E) const; 1942 const Elf_Sym *getGotSym(const Entry *E) const; 1943 1944 uint64_t getPltAddress(const Entry * E) const; 1945 const Elf_Sym *getPltSym(const Entry *E) const; 1946 1947 StringRef getPltStrTable() const { return PltStrTable; } 1948 1949 private: 1950 const Elf_Shdr *GotSec; 1951 size_t LocalNum; 1952 size_t GlobalNum; 1953 1954 const Elf_Shdr *PltSec; 1955 const Elf_Shdr *PltRelSec; 1956 const Elf_Shdr *PltSymTable; 1957 Elf_Sym_Range GotDynSyms; 1958 StringRef PltStrTable; 1959 1960 Entries GotEntries; 1961 Entries PltEntries; 1962 }; 1963 1964 } // end anonymous namespace 1965 1966 template <class ELFT> 1967 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, 1968 Elf_Sym_Range DynSyms) 1969 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0), 1970 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr) { 1971 // See "Global Offset Table" in Chapter 5 in the following document 1972 // for detailed GOT description. 1973 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1974 1975 // Find static GOT secton. 1976 if (IsStatic) { 1977 GotSec = findSectionByName(*Obj, ".got"); 1978 if (!GotSec) 1979 reportError("Cannot find .got section"); 1980 1981 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 1982 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 1983 Content.size() / sizeof(Entry)); 1984 LocalNum = GotEntries.size(); 1985 return; 1986 } 1987 1988 // Lookup dynamic table tags which define GOT/PLT layouts. 1989 Optional<uint64_t> DtPltGot; 1990 Optional<uint64_t> DtLocalGotNum; 1991 Optional<uint64_t> DtGotSym; 1992 Optional<uint64_t> DtMipsPltGot; 1993 Optional<uint64_t> DtJmpRel; 1994 for (const auto &Entry : DynTable) { 1995 switch (Entry.getTag()) { 1996 case ELF::DT_PLTGOT: 1997 DtPltGot = Entry.getVal(); 1998 break; 1999 case ELF::DT_MIPS_LOCAL_GOTNO: 2000 DtLocalGotNum = Entry.getVal(); 2001 break; 2002 case ELF::DT_MIPS_GOTSYM: 2003 DtGotSym = Entry.getVal(); 2004 break; 2005 case ELF::DT_MIPS_PLTGOT: 2006 DtMipsPltGot = Entry.getVal(); 2007 break; 2008 case ELF::DT_JMPREL: 2009 DtJmpRel = Entry.getVal(); 2010 break; 2011 } 2012 } 2013 2014 // Find dynamic GOT section. 2015 if (DtPltGot || DtLocalGotNum || DtGotSym) { 2016 if (!DtPltGot) 2017 report_fatal_error("Cannot find PLTGOT dynamic table tag."); 2018 if (!DtLocalGotNum) 2019 report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag."); 2020 if (!DtGotSym) 2021 report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag."); 2022 2023 size_t DynSymTotal = DynSyms.size(); 2024 if (*DtGotSym > DynSymTotal) 2025 reportError("MIPS_GOTSYM exceeds a number of dynamic symbols"); 2026 2027 GotSec = findNotEmptySectionByAddress(Obj, *DtPltGot); 2028 if (!GotSec) 2029 reportError("There is no not empty GOT section at 0x" + 2030 Twine::utohexstr(*DtPltGot)); 2031 2032 LocalNum = *DtLocalGotNum; 2033 GlobalNum = DynSymTotal - *DtGotSym; 2034 2035 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 2036 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2037 Content.size() / sizeof(Entry)); 2038 GotDynSyms = DynSyms.drop_front(*DtGotSym); 2039 } 2040 2041 // Find PLT section. 2042 if (DtMipsPltGot || DtJmpRel) { 2043 if (!DtMipsPltGot) 2044 report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag."); 2045 if (!DtJmpRel) 2046 report_fatal_error("Cannot find JMPREL dynamic table tag."); 2047 2048 PltSec = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2049 if (!PltSec) 2050 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2051 Twine::utohexstr(*DtMipsPltGot)); 2052 2053 PltRelSec = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2054 if (!PltRelSec) 2055 report_fatal_error("There is no not empty RELPLT section at 0x" + 2056 Twine::utohexstr(*DtJmpRel)); 2057 2058 ArrayRef<uint8_t> PltContent = 2059 unwrapOrError(Obj->getSectionContents(PltSec)); 2060 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()), 2061 PltContent.size() / sizeof(Entry)); 2062 2063 PltSymTable = unwrapOrError(Obj->getSection(PltRelSec->sh_link)); 2064 PltStrTable = unwrapOrError(Obj->getStringTableForSymtab(*PltSymTable)); 2065 } 2066 } 2067 2068 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 2069 return GotSec->sh_addr + 0x7ff0; 2070 } 2071 2072 template <class ELFT> 2073 const typename MipsGOTParser<ELFT>::Entry * 2074 MipsGOTParser<ELFT>::getGotLazyResolver() const { 2075 return LocalNum > 0 ? &GotEntries[0] : nullptr; 2076 } 2077 2078 template <class ELFT> 2079 const typename MipsGOTParser<ELFT>::Entry * 2080 MipsGOTParser<ELFT>::getGotModulePointer() const { 2081 if (LocalNum < 2) 2082 return nullptr; 2083 const Entry &E = GotEntries[1]; 2084 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 2085 return nullptr; 2086 return &E; 2087 } 2088 2089 template <class ELFT> 2090 typename MipsGOTParser<ELFT>::Entries 2091 MipsGOTParser<ELFT>::getLocalEntries() const { 2092 size_t Skip = getGotModulePointer() ? 2 : 1; 2093 if (LocalNum - Skip <= 0) 2094 return Entries(); 2095 return GotEntries.slice(Skip, LocalNum - Skip); 2096 } 2097 2098 template <class ELFT> 2099 typename MipsGOTParser<ELFT>::Entries 2100 MipsGOTParser<ELFT>::getGlobalEntries() const { 2101 if (GlobalNum == 0) 2102 return Entries(); 2103 return GotEntries.slice(LocalNum, GlobalNum); 2104 } 2105 2106 template <class ELFT> 2107 typename MipsGOTParser<ELFT>::Entries 2108 MipsGOTParser<ELFT>::getOtherEntries() const { 2109 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 2110 if (OtherNum == 0) 2111 return Entries(); 2112 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 2113 } 2114 2115 template <class ELFT> 2116 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 2117 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2118 return GotSec->sh_addr + Offset; 2119 } 2120 2121 template <class ELFT> 2122 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 2123 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2124 return Offset - 0x7ff0; 2125 } 2126 2127 template <class ELFT> 2128 const typename MipsGOTParser<ELFT>::Elf_Sym * 2129 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 2130 int64_t Offset = std::distance(GotEntries.data(), E); 2131 return &GotDynSyms[Offset - LocalNum]; 2132 } 2133 2134 template <class ELFT> 2135 const typename MipsGOTParser<ELFT>::Entry * 2136 MipsGOTParser<ELFT>::getPltLazyResolver() const { 2137 return PltEntries.empty() ? nullptr : &PltEntries[0]; 2138 } 2139 2140 template <class ELFT> 2141 const typename MipsGOTParser<ELFT>::Entry * 2142 MipsGOTParser<ELFT>::getPltModulePointer() const { 2143 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 2144 } 2145 2146 template <class ELFT> 2147 typename MipsGOTParser<ELFT>::Entries 2148 MipsGOTParser<ELFT>::getPltEntries() const { 2149 if (PltEntries.size() <= 2) 2150 return Entries(); 2151 return PltEntries.slice(2, PltEntries.size() - 2); 2152 } 2153 2154 template <class ELFT> 2155 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 2156 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 2157 return PltSec->sh_addr + Offset; 2158 } 2159 2160 template <class ELFT> 2161 const typename MipsGOTParser<ELFT>::Elf_Sym * 2162 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 2163 int64_t Offset = std::distance(getPltEntries().data(), E); 2164 if (PltRelSec->sh_type == ELF::SHT_REL) { 2165 Elf_Rel_Range Rels = unwrapOrError(Obj->rels(PltRelSec)); 2166 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2167 } else { 2168 Elf_Rela_Range Rels = unwrapOrError(Obj->relas(PltRelSec)); 2169 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2170 } 2171 } 2172 2173 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2174 if (Obj->getHeader()->e_machine != EM_MIPS) 2175 reportError("MIPS PLT GOT is available for MIPS targets only"); 2176 2177 MipsGOTParser<ELFT> Parser(Obj, dynamic_table(), dynamic_symbols()); 2178 if (Parser.hasGot()) 2179 ELFDumperStyle->printMipsGOT(Parser); 2180 if (Parser.hasPlt()) 2181 ELFDumperStyle->printMipsPLT(Parser); 2182 } 2183 2184 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2185 {"None", Mips::AFL_EXT_NONE}, 2186 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2187 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2188 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2189 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2190 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2191 {"LSI R4010", Mips::AFL_EXT_4010}, 2192 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2193 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2194 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2195 {"MIPS R4650", Mips::AFL_EXT_4650}, 2196 {"MIPS R5900", Mips::AFL_EXT_5900}, 2197 {"MIPS R10000", Mips::AFL_EXT_10000}, 2198 {"NEC VR4100", Mips::AFL_EXT_4100}, 2199 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2200 {"NEC VR4120", Mips::AFL_EXT_4120}, 2201 {"NEC VR5400", Mips::AFL_EXT_5400}, 2202 {"NEC VR5500", Mips::AFL_EXT_5500}, 2203 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2204 {"Toshiba R3900", Mips::AFL_EXT_3900} 2205 }; 2206 2207 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2208 {"DSP", Mips::AFL_ASE_DSP}, 2209 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2210 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2211 {"MCU", Mips::AFL_ASE_MCU}, 2212 {"MDMX", Mips::AFL_ASE_MDMX}, 2213 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2214 {"MT", Mips::AFL_ASE_MT}, 2215 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2216 {"VZ", Mips::AFL_ASE_VIRT}, 2217 {"MSA", Mips::AFL_ASE_MSA}, 2218 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2219 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2220 {"XPA", Mips::AFL_ASE_XPA}, 2221 {"CRC", Mips::AFL_ASE_CRC}, 2222 }; 2223 2224 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2225 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2226 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2227 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2228 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2229 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2230 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2231 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2232 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2233 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2234 Mips::Val_GNU_MIPS_ABI_FP_64A} 2235 }; 2236 2237 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2238 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2239 }; 2240 2241 static int getMipsRegisterSize(uint8_t Flag) { 2242 switch (Flag) { 2243 case Mips::AFL_REG_NONE: 2244 return 0; 2245 case Mips::AFL_REG_32: 2246 return 32; 2247 case Mips::AFL_REG_64: 2248 return 64; 2249 case Mips::AFL_REG_128: 2250 return 128; 2251 default: 2252 return -1; 2253 } 2254 } 2255 2256 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2257 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2258 if (!Shdr) { 2259 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2260 return; 2261 } 2262 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2263 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2264 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2265 return; 2266 } 2267 2268 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2269 2270 raw_ostream &OS = W.getOStream(); 2271 DictScope GS(W, "MIPS ABI Flags"); 2272 2273 W.printNumber("Version", Flags->version); 2274 W.startLine() << "ISA: "; 2275 if (Flags->isa_rev <= 1) 2276 OS << format("MIPS%u", Flags->isa_level); 2277 else 2278 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2279 OS << "\n"; 2280 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2281 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2282 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2283 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2284 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2285 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2286 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2287 W.printHex("Flags 2", Flags->flags2); 2288 } 2289 2290 template <class ELFT> 2291 static void printMipsReginfoData(ScopedPrinter &W, 2292 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2293 W.printHex("GP", Reginfo.ri_gp_value); 2294 W.printHex("General Mask", Reginfo.ri_gprmask); 2295 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2296 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2297 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2298 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2299 } 2300 2301 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2302 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2303 if (!Shdr) { 2304 W.startLine() << "There is no .reginfo section in the file.\n"; 2305 return; 2306 } 2307 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2308 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2309 W.startLine() << "The .reginfo section has a wrong size.\n"; 2310 return; 2311 } 2312 2313 DictScope GS(W, "MIPS RegInfo"); 2314 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2315 printMipsReginfoData(W, *Reginfo); 2316 } 2317 2318 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2319 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2320 if (!Shdr) { 2321 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2322 return; 2323 } 2324 2325 DictScope GS(W, "MIPS Options"); 2326 2327 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2328 while (!Sec.empty()) { 2329 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2330 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2331 return; 2332 } 2333 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2334 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2335 switch (O->kind) { 2336 case ODK_REGINFO: 2337 printMipsReginfoData(W, O->getRegInfo()); 2338 break; 2339 default: 2340 W.startLine() << "Unsupported MIPS options tag.\n"; 2341 break; 2342 } 2343 Sec = Sec.slice(O->size); 2344 } 2345 } 2346 2347 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2348 const Elf_Shdr *StackMapSection = nullptr; 2349 for (const auto &Sec : unwrapOrError(Obj->sections())) { 2350 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2351 if (Name == ".llvm_stackmaps") { 2352 StackMapSection = &Sec; 2353 break; 2354 } 2355 } 2356 2357 if (!StackMapSection) 2358 return; 2359 2360 ArrayRef<uint8_t> StackMapContentsArray = 2361 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2362 2363 prettyPrintStackMap( 2364 W, StackMapV2Parser<ELFT::TargetEndianness>(StackMapContentsArray)); 2365 } 2366 2367 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2368 ELFDumperStyle->printGroupSections(Obj); 2369 } 2370 2371 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2372 StringRef Str2) { 2373 OS.PadToColumn(2u); 2374 OS << Str1; 2375 OS.PadToColumn(37u); 2376 OS << Str2 << "\n"; 2377 OS.flush(); 2378 } 2379 2380 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2381 const Elf_Ehdr *e = Obj->getHeader(); 2382 OS << "ELF Header:\n"; 2383 OS << " Magic: "; 2384 std::string Str; 2385 for (int i = 0; i < ELF::EI_NIDENT; i++) 2386 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2387 OS << "\n"; 2388 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2389 printFields(OS, "Class:", Str); 2390 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2391 printFields(OS, "Data:", Str); 2392 OS.PadToColumn(2u); 2393 OS << "Version:"; 2394 OS.PadToColumn(37u); 2395 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2396 if (e->e_version == ELF::EV_CURRENT) 2397 OS << " (current)"; 2398 OS << "\n"; 2399 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2400 printFields(OS, "OS/ABI:", Str); 2401 Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2402 printFields(OS, "ABI Version:", Str); 2403 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2404 printFields(OS, "Type:", Str); 2405 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2406 printFields(OS, "Machine:", Str); 2407 Str = "0x" + to_hexString(e->e_version); 2408 printFields(OS, "Version:", Str); 2409 Str = "0x" + to_hexString(e->e_entry); 2410 printFields(OS, "Entry point address:", Str); 2411 Str = to_string(e->e_phoff) + " (bytes into file)"; 2412 printFields(OS, "Start of program headers:", Str); 2413 Str = to_string(e->e_shoff) + " (bytes into file)"; 2414 printFields(OS, "Start of section headers:", Str); 2415 Str = "0x" + to_hexString(e->e_flags); 2416 printFields(OS, "Flags:", Str); 2417 Str = to_string(e->e_ehsize) + " (bytes)"; 2418 printFields(OS, "Size of this header:", Str); 2419 Str = to_string(e->e_phentsize) + " (bytes)"; 2420 printFields(OS, "Size of program headers:", Str); 2421 Str = to_string(e->e_phnum); 2422 printFields(OS, "Number of program headers:", Str); 2423 Str = to_string(e->e_shentsize) + " (bytes)"; 2424 printFields(OS, "Size of section headers:", Str); 2425 Str = to_string(e->e_shnum); 2426 printFields(OS, "Number of section headers:", Str); 2427 Str = to_string(e->e_shstrndx); 2428 printFields(OS, "Section header string table index:", Str); 2429 } 2430 2431 namespace { 2432 struct GroupMember { 2433 StringRef Name; 2434 uint64_t Index; 2435 }; 2436 2437 struct GroupSection { 2438 StringRef Name; 2439 StringRef Signature; 2440 uint64_t ShName; 2441 uint64_t Index; 2442 uint32_t Link; 2443 uint32_t Info; 2444 uint32_t Type; 2445 std::vector<GroupMember> Members; 2446 }; 2447 2448 template <class ELFT> 2449 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) { 2450 using Elf_Shdr = typename ELFT::Shdr; 2451 using Elf_Sym = typename ELFT::Sym; 2452 using Elf_Word = typename ELFT::Word; 2453 2454 std::vector<GroupSection> Ret; 2455 uint64_t I = 0; 2456 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2457 ++I; 2458 if (Sec.sh_type != ELF::SHT_GROUP) 2459 continue; 2460 2461 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2462 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2463 const Elf_Sym *Sym = 2464 unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 2465 auto Data = 2466 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2467 2468 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2469 StringRef Signature = StrTable.data() + Sym->st_name; 2470 Ret.push_back({Name, 2471 Signature, 2472 Sec.sh_name, 2473 I - 1, 2474 Sec.sh_link, 2475 Sec.sh_info, 2476 Data[0], 2477 {}}); 2478 2479 std::vector<GroupMember> &GM = Ret.back().Members; 2480 for (uint32_t Ndx : Data.slice(1)) { 2481 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2482 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2483 GM.push_back({Name, Ndx}); 2484 } 2485 } 2486 return Ret; 2487 } 2488 2489 DenseMap<uint64_t, const GroupSection *> 2490 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 2491 DenseMap<uint64_t, const GroupSection *> Ret; 2492 for (const GroupSection &G : Groups) 2493 for (const GroupMember &GM : G.Members) 2494 Ret.insert({GM.Index, &G}); 2495 return Ret; 2496 } 2497 2498 } // namespace 2499 2500 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2501 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 2502 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 2503 for (const GroupSection &G : V) { 2504 OS << "\n" 2505 << getGroupType(G.Type) << " group section [" 2506 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 2507 << "] contains " << G.Members.size() << " sections:\n" 2508 << " [Index] Name\n"; 2509 for (const GroupMember &GM : G.Members) { 2510 const GroupSection *MainGroup = Map[GM.Index]; 2511 if (MainGroup != &G) { 2512 OS.flush(); 2513 errs() << "Error: section [" << format_decimal(GM.Index, 5) 2514 << "] in group section [" << format_decimal(G.Index, 5) 2515 << "] already in group section [" 2516 << format_decimal(MainGroup->Index, 5) << "]"; 2517 errs().flush(); 2518 continue; 2519 } 2520 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 2521 } 2522 } 2523 2524 if (V.empty()) 2525 OS << "There are no section groups in this file.\n"; 2526 } 2527 2528 template <class ELFT> 2529 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2530 const Elf_Rela &R, bool IsRela) { 2531 std::string Offset, Info, Addend, Value; 2532 SmallString<32> RelocName; 2533 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2534 StringRef TargetName; 2535 const Elf_Sym *Sym = nullptr; 2536 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2537 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2538 2539 // First two fields are bit width dependent. The rest of them are after are 2540 // fixed width. 2541 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2542 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2543 Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab)); 2544 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2545 const Elf_Shdr *Sec = unwrapOrError( 2546 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2547 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2548 } else if (Sym) { 2549 TargetName = unwrapOrError(Sym->getName(StrTable)); 2550 } 2551 2552 if (Sym && IsRela) { 2553 if (R.r_addend < 0) 2554 Addend = " - "; 2555 else 2556 Addend = " + "; 2557 } 2558 2559 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2560 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2561 2562 int64_t RelAddend = R.r_addend; 2563 if (IsRela) 2564 Addend += to_hexString(std::abs(RelAddend), false); 2565 2566 if (Sym) 2567 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2568 2569 Fields[0].Str = Offset; 2570 Fields[1].Str = Info; 2571 Fields[2].Str = RelocName; 2572 Fields[3].Str = Value; 2573 Fields[4].Str = TargetName; 2574 for (auto &field : Fields) 2575 printField(field); 2576 OS << Addend; 2577 OS << "\n"; 2578 } 2579 2580 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2581 if (Is64) 2582 OS << " Offset Info Type" 2583 << " Symbol's Value Symbol's Name"; 2584 else 2585 OS << " Offset Info Type Sym. Value " 2586 << "Symbol's Name"; 2587 if (IsRela) 2588 OS << (IsRela ? " + Addend" : ""); 2589 OS << "\n"; 2590 } 2591 2592 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2593 bool HasRelocSections = false; 2594 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2595 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 2596 Sec.sh_type != ELF::SHT_ANDROID_REL && 2597 Sec.sh_type != ELF::SHT_ANDROID_RELA) 2598 continue; 2599 HasRelocSections = true; 2600 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2601 unsigned Entries = Sec.getEntityCount(); 2602 uintX_t Offset = Sec.sh_offset; 2603 OS << "\nRelocation section '" << Name << "' at offset 0x" 2604 << to_hexString(Offset, false) << " contains " << Entries 2605 << " entries:\n"; 2606 printRelocHeader(OS, ELFT::Is64Bits, 2607 Sec.sh_type == ELF::SHT_RELA || 2608 Sec.sh_type == ELF::SHT_ANDROID_RELA); 2609 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2610 switch (Sec.sh_type) { 2611 case ELF::SHT_REL: 2612 for (const auto &R : unwrapOrError(Obj->rels(&Sec))) { 2613 Elf_Rela Rela; 2614 Rela.r_offset = R.r_offset; 2615 Rela.r_info = R.r_info; 2616 Rela.r_addend = 0; 2617 printRelocation(Obj, SymTab, Rela, false); 2618 } 2619 break; 2620 case ELF::SHT_RELA: 2621 for (const auto &R : unwrapOrError(Obj->relas(&Sec))) 2622 printRelocation(Obj, SymTab, R, true); 2623 break; 2624 case ELF::SHT_ANDROID_REL: 2625 case ELF::SHT_ANDROID_RELA: 2626 for (const auto &R : unwrapOrError(Obj->android_relas(&Sec))) 2627 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA); 2628 break; 2629 } 2630 } 2631 if (!HasRelocSections) 2632 OS << "\nThere are no relocations in this file.\n"; 2633 } 2634 2635 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2636 using namespace ELF; 2637 2638 switch (Arch) { 2639 case EM_ARM: 2640 switch (Type) { 2641 case SHT_ARM_EXIDX: 2642 return "ARM_EXIDX"; 2643 case SHT_ARM_PREEMPTMAP: 2644 return "ARM_PREEMPTMAP"; 2645 case SHT_ARM_ATTRIBUTES: 2646 return "ARM_ATTRIBUTES"; 2647 case SHT_ARM_DEBUGOVERLAY: 2648 return "ARM_DEBUGOVERLAY"; 2649 case SHT_ARM_OVERLAYSECTION: 2650 return "ARM_OVERLAYSECTION"; 2651 } 2652 case EM_X86_64: 2653 switch (Type) { 2654 case SHT_X86_64_UNWIND: 2655 return "X86_64_UNWIND"; 2656 } 2657 case EM_MIPS: 2658 case EM_MIPS_RS3_LE: 2659 switch (Type) { 2660 case SHT_MIPS_REGINFO: 2661 return "MIPS_REGINFO"; 2662 case SHT_MIPS_OPTIONS: 2663 return "MIPS_OPTIONS"; 2664 case SHT_MIPS_ABIFLAGS: 2665 return "MIPS_ABIFLAGS"; 2666 case SHT_MIPS_DWARF: 2667 return "SHT_MIPS_DWARF"; 2668 } 2669 } 2670 switch (Type) { 2671 case SHT_NULL: 2672 return "NULL"; 2673 case SHT_PROGBITS: 2674 return "PROGBITS"; 2675 case SHT_SYMTAB: 2676 return "SYMTAB"; 2677 case SHT_STRTAB: 2678 return "STRTAB"; 2679 case SHT_RELA: 2680 return "RELA"; 2681 case SHT_HASH: 2682 return "HASH"; 2683 case SHT_DYNAMIC: 2684 return "DYNAMIC"; 2685 case SHT_NOTE: 2686 return "NOTE"; 2687 case SHT_NOBITS: 2688 return "NOBITS"; 2689 case SHT_REL: 2690 return "REL"; 2691 case SHT_SHLIB: 2692 return "SHLIB"; 2693 case SHT_DYNSYM: 2694 return "DYNSYM"; 2695 case SHT_INIT_ARRAY: 2696 return "INIT_ARRAY"; 2697 case SHT_FINI_ARRAY: 2698 return "FINI_ARRAY"; 2699 case SHT_PREINIT_ARRAY: 2700 return "PREINIT_ARRAY"; 2701 case SHT_GROUP: 2702 return "GROUP"; 2703 case SHT_SYMTAB_SHNDX: 2704 return "SYMTAB SECTION INDICES"; 2705 case SHT_LLVM_ODRTAB: 2706 return "LLVM_ODRTAB"; 2707 case SHT_LLVM_LINKER_OPTIONS: 2708 return "LLVM_LINKER_OPTIONS"; 2709 // FIXME: Parse processor specific GNU attributes 2710 case SHT_GNU_ATTRIBUTES: 2711 return "ATTRIBUTES"; 2712 case SHT_GNU_HASH: 2713 return "GNU_HASH"; 2714 case SHT_GNU_verdef: 2715 return "VERDEF"; 2716 case SHT_GNU_verneed: 2717 return "VERNEED"; 2718 case SHT_GNU_versym: 2719 return "VERSYM"; 2720 default: 2721 return ""; 2722 } 2723 return ""; 2724 } 2725 2726 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2727 size_t SectionIndex = 0; 2728 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2729 Alignment; 2730 unsigned Bias; 2731 unsigned Width; 2732 2733 if (ELFT::Is64Bits) { 2734 Bias = 0; 2735 Width = 16; 2736 } else { 2737 Bias = 8; 2738 Width = 8; 2739 } 2740 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2741 << " section headers, starting at offset " 2742 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2743 OS << "Section Headers:\n"; 2744 Field Fields[11] = {{"[Nr]", 2}, 2745 {"Name", 7}, 2746 {"Type", 25}, 2747 {"Address", 41}, 2748 {"Off", 58 - Bias}, 2749 {"Size", 65 - Bias}, 2750 {"ES", 72 - Bias}, 2751 {"Flg", 75 - Bias}, 2752 {"Lk", 79 - Bias}, 2753 {"Inf", 82 - Bias}, 2754 {"Al", 86 - Bias}}; 2755 for (auto &f : Fields) 2756 printField(f); 2757 OS << "\n"; 2758 2759 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2760 Number = to_string(SectionIndex); 2761 Fields[0].Str = Number; 2762 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2763 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2764 Fields[2].Str = Type; 2765 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2766 Fields[3].Str = Address; 2767 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2768 Fields[4].Str = Offset; 2769 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2770 Fields[5].Str = Size; 2771 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2772 Fields[6].Str = EntrySize; 2773 Flags = getGNUFlags(Sec.sh_flags); 2774 Fields[7].Str = Flags; 2775 Link = to_string(Sec.sh_link); 2776 Fields[8].Str = Link; 2777 Info = to_string(Sec.sh_info); 2778 Fields[9].Str = Info; 2779 Alignment = to_string(Sec.sh_addralign); 2780 Fields[10].Str = Alignment; 2781 OS.PadToColumn(Fields[0].Column); 2782 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2783 for (int i = 1; i < 7; i++) 2784 printField(Fields[i]); 2785 OS.PadToColumn(Fields[7].Column); 2786 OS << right_justify(Fields[7].Str, 3); 2787 OS.PadToColumn(Fields[8].Column); 2788 OS << right_justify(Fields[8].Str, 2); 2789 OS.PadToColumn(Fields[9].Column); 2790 OS << right_justify(Fields[9].Str, 3); 2791 OS.PadToColumn(Fields[10].Column); 2792 OS << right_justify(Fields[10].Str, 2); 2793 OS << "\n"; 2794 ++SectionIndex; 2795 } 2796 OS << "Key to Flags:\n" 2797 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2798 "(large)\n" 2799 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2800 x (unknown)\n" 2801 << " O (extra OS processing required) o (OS specific),\ 2802 p (processor specific)\n"; 2803 } 2804 2805 template <class ELFT> 2806 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2807 size_t Entries) { 2808 if (!Name.empty()) 2809 OS << "\nSymbol table '" << Name << "' contains " << Entries 2810 << " entries:\n"; 2811 else 2812 OS << "\n Symbol table for image:\n"; 2813 2814 if (ELFT::Is64Bits) 2815 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2816 else 2817 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2818 } 2819 2820 template <class ELFT> 2821 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2822 const Elf_Sym *Symbol, 2823 const Elf_Sym *FirstSym) { 2824 unsigned SectionIndex = Symbol->st_shndx; 2825 switch (SectionIndex) { 2826 case ELF::SHN_UNDEF: 2827 return "UND"; 2828 case ELF::SHN_ABS: 2829 return "ABS"; 2830 case ELF::SHN_COMMON: 2831 return "COM"; 2832 case ELF::SHN_XINDEX: 2833 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 2834 Symbol, FirstSym, this->dumper()->getShndxTable())); 2835 LLVM_FALLTHROUGH; 2836 default: 2837 // Find if: 2838 // Processor specific 2839 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2840 return std::string("PRC[0x") + 2841 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2842 // OS specific 2843 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2844 return std::string("OS[0x") + 2845 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2846 // Architecture reserved: 2847 if (SectionIndex >= ELF::SHN_LORESERVE && 2848 SectionIndex <= ELF::SHN_HIRESERVE) 2849 return std::string("RSV[0x") + 2850 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2851 // A normal section with an index 2852 return to_string(format_decimal(SectionIndex, 3)); 2853 } 2854 } 2855 2856 template <class ELFT> 2857 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2858 const Elf_Sym *FirstSym, StringRef StrTable, 2859 bool IsDynamic) { 2860 static int Idx = 0; 2861 static bool Dynamic = true; 2862 size_t Width; 2863 2864 // If this function was called with a different value from IsDynamic 2865 // from last call, happens when we move from dynamic to static symbol 2866 // table, "Num" field should be reset. 2867 if (!Dynamic != !IsDynamic) { 2868 Idx = 0; 2869 Dynamic = false; 2870 } 2871 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2872 unsigned Bias = 0; 2873 if (ELFT::Is64Bits) { 2874 Bias = 8; 2875 Width = 16; 2876 } else { 2877 Bias = 0; 2878 Width = 8; 2879 } 2880 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2881 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2882 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2883 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2884 Size = to_string(format_decimal(Symbol->st_size, 5)); 2885 unsigned char SymbolType = Symbol->getType(); 2886 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2887 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2888 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2889 else 2890 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2891 unsigned Vis = Symbol->getVisibility(); 2892 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2893 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2894 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2895 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2896 Fields[0].Str = Num; 2897 Fields[1].Str = Value; 2898 Fields[2].Str = Size; 2899 Fields[3].Str = Type; 2900 Fields[4].Str = Binding; 2901 Fields[5].Str = Visibility; 2902 Fields[6].Str = Section; 2903 Fields[7].Str = Name; 2904 for (auto &Entry : Fields) 2905 printField(Entry); 2906 OS << "\n"; 2907 } 2908 template <class ELFT> 2909 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 2910 uint32_t Sym, StringRef StrTable, 2911 uint32_t Bucket) { 2912 std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section; 2913 unsigned Width, Bias = 0; 2914 if (ELFT::Is64Bits) { 2915 Bias = 8; 2916 Width = 16; 2917 } else { 2918 Bias = 0; 2919 Width = 8; 2920 } 2921 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 2922 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 2923 Num = to_string(format_decimal(Sym, 5)); 2924 Buc = to_string(format_decimal(Bucket, 3)) + ":"; 2925 2926 const auto Symbol = FirstSym + Sym; 2927 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2928 Size = to_string(format_decimal(Symbol->st_size, 5)); 2929 unsigned char SymbolType = Symbol->getType(); 2930 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2931 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2932 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2933 else 2934 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2935 unsigned Vis = Symbol->getVisibility(); 2936 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2937 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2938 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2939 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 2940 Fields[0].Str = Num; 2941 Fields[1].Str = Buc; 2942 Fields[2].Str = Value; 2943 Fields[3].Str = Size; 2944 Fields[4].Str = Type; 2945 Fields[5].Str = Binding; 2946 Fields[6].Str = Visibility; 2947 Fields[7].Str = Section; 2948 Fields[8].Str = Name; 2949 for (auto &Entry : Fields) 2950 printField(Entry); 2951 OS << "\n"; 2952 } 2953 2954 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2955 if (opts::DynamicSymbols) 2956 return; 2957 this->dumper()->printSymbolsHelper(true); 2958 this->dumper()->printSymbolsHelper(false); 2959 } 2960 2961 template <class ELFT> 2962 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2963 if (this->dumper()->getDynamicStringTable().empty()) 2964 return; 2965 auto StringTable = this->dumper()->getDynamicStringTable(); 2966 auto DynSyms = this->dumper()->dynamic_symbols(); 2967 auto GnuHash = this->dumper()->getGnuHashTable(); 2968 auto SysVHash = this->dumper()->getHashTable(); 2969 2970 // If no hash or .gnu.hash found, try using symbol table 2971 if (GnuHash == nullptr && SysVHash == nullptr) 2972 this->dumper()->printSymbolsHelper(true); 2973 2974 // Try printing .hash 2975 if (this->dumper()->getHashTable()) { 2976 OS << "\n Symbol table of .hash for image:\n"; 2977 if (ELFT::Is64Bits) 2978 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2979 else 2980 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 2981 OS << "\n"; 2982 2983 uint32_t NBuckets = SysVHash->nbucket; 2984 uint32_t NChains = SysVHash->nchain; 2985 auto Buckets = SysVHash->buckets(); 2986 auto Chains = SysVHash->chains(); 2987 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 2988 if (Buckets[Buc] == ELF::STN_UNDEF) 2989 continue; 2990 for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) { 2991 if (Ch == ELF::STN_UNDEF) 2992 break; 2993 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc); 2994 } 2995 } 2996 } 2997 2998 // Try printing .gnu.hash 2999 if (GnuHash) { 3000 OS << "\n Symbol table of .gnu.hash for image:\n"; 3001 if (ELFT::Is64Bits) 3002 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3003 else 3004 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3005 OS << "\n"; 3006 uint32_t NBuckets = GnuHash->nbuckets; 3007 auto Buckets = GnuHash->buckets(); 3008 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 3009 if (Buckets[Buc] == ELF::STN_UNDEF) 3010 continue; 3011 uint32_t Index = Buckets[Buc]; 3012 uint32_t GnuHashable = Index - GnuHash->symndx; 3013 // Print whole chain 3014 while (true) { 3015 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc); 3016 // Chain ends at symbol with stopper bit 3017 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1) 3018 break; 3019 } 3020 } 3021 } 3022 } 3023 3024 static inline std::string printPhdrFlags(unsigned Flag) { 3025 std::string Str; 3026 Str = (Flag & PF_R) ? "R" : " "; 3027 Str += (Flag & PF_W) ? "W" : " "; 3028 Str += (Flag & PF_X) ? "E" : " "; 3029 return Str; 3030 } 3031 3032 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 3033 // PT_TLS must only have SHF_TLS sections 3034 template <class ELFT> 3035 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 3036 const Elf_Shdr &Sec) { 3037 return (((Sec.sh_flags & ELF::SHF_TLS) && 3038 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 3039 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 3040 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 3041 } 3042 3043 // Non-SHT_NOBITS must have its offset inside the segment 3044 // Only non-zero section can be at end of segment 3045 template <class ELFT> 3046 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3047 if (Sec.sh_type == ELF::SHT_NOBITS) 3048 return true; 3049 bool IsSpecial = 3050 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3051 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3052 auto SectionSize = 3053 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3054 if (Sec.sh_offset >= Phdr.p_offset) 3055 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 3056 /*only non-zero sized sections at end*/ && 3057 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 3058 return false; 3059 } 3060 3061 // SHF_ALLOC must have VMA inside segment 3062 // Only non-zero section can be at end of segment 3063 template <class ELFT> 3064 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3065 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 3066 return true; 3067 bool IsSpecial = 3068 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3069 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3070 auto SectionSize = 3071 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3072 if (Sec.sh_addr >= Phdr.p_vaddr) 3073 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 3074 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 3075 return false; 3076 } 3077 3078 // No section with zero size must be at start or end of PT_DYNAMIC 3079 template <class ELFT> 3080 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3081 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 3082 return true; 3083 // Is section within the phdr both based on offset and VMA ? 3084 return ((Sec.sh_type == ELF::SHT_NOBITS) || 3085 (Sec.sh_offset > Phdr.p_offset && 3086 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 3087 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 3088 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 3089 } 3090 3091 template <class ELFT> 3092 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3093 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3094 unsigned Width = ELFT::Is64Bits ? 18 : 10; 3095 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 3096 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 3097 3098 const Elf_Ehdr *Header = Obj->getHeader(); 3099 Field Fields[8] = {2, 17, 26, 37 + Bias, 3100 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 3101 OS << "\nElf file type is " 3102 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 3103 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 3104 << "There are " << Header->e_phnum << " program headers," 3105 << " starting at offset " << Header->e_phoff << "\n\n" 3106 << "Program Headers:\n"; 3107 if (ELFT::Is64Bits) 3108 OS << " Type Offset VirtAddr PhysAddr " 3109 << " FileSiz MemSiz Flg Align\n"; 3110 else 3111 OS << " Type Offset VirtAddr PhysAddr FileSiz " 3112 << "MemSiz Flg Align\n"; 3113 for (const auto &Phdr : unwrapOrError(Obj->program_headers())) { 3114 Type = getElfPtType(Header->e_machine, Phdr.p_type); 3115 Offset = to_string(format_hex(Phdr.p_offset, 8)); 3116 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 3117 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 3118 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 3119 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 3120 Flag = printPhdrFlags(Phdr.p_flags); 3121 Align = to_string(format_hex(Phdr.p_align, 1)); 3122 Fields[0].Str = Type; 3123 Fields[1].Str = Offset; 3124 Fields[2].Str = VMA; 3125 Fields[3].Str = LMA; 3126 Fields[4].Str = FileSz; 3127 Fields[5].Str = MemSz; 3128 Fields[6].Str = Flag; 3129 Fields[7].Str = Align; 3130 for (auto Field : Fields) 3131 printField(Field); 3132 if (Phdr.p_type == ELF::PT_INTERP) { 3133 OS << "\n [Requesting program interpreter: "; 3134 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 3135 } 3136 OS << "\n"; 3137 } 3138 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 3139 int Phnum = 0; 3140 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3141 std::string Sections; 3142 OS << format(" %2.2d ", Phnum++); 3143 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3144 // Check if each section is in a segment and then print mapping. 3145 // readelf additionally makes sure it does not print zero sized sections 3146 // at end of segments and for PT_DYNAMIC both start and end of section 3147 // .tbss must only be shown in PT_TLS section. 3148 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 3149 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 3150 Phdr.p_type != ELF::PT_TLS; 3151 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 3152 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 3153 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 3154 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 3155 } 3156 OS << Sections << "\n"; 3157 OS.flush(); 3158 } 3159 } 3160 3161 template <class ELFT> 3162 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 3163 bool IsRela) { 3164 SmallString<32> RelocName; 3165 StringRef SymbolName; 3166 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3167 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3168 // First two fields are bit width dependent. The rest of them are after are 3169 // fixed width. 3170 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3171 3172 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 3173 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3174 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3175 SymbolName = 3176 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3177 std::string Addend, Info, Offset, Value; 3178 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 3179 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 3180 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3181 int64_t RelAddend = R.r_addend; 3182 if (!SymbolName.empty() && IsRela) { 3183 if (R.r_addend < 0) 3184 Addend = " - "; 3185 else 3186 Addend = " + "; 3187 } 3188 3189 if (SymbolName.empty() && Sym->getValue() == 0) 3190 Value = ""; 3191 3192 if (IsRela) 3193 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 3194 3195 3196 Fields[0].Str = Offset; 3197 Fields[1].Str = Info; 3198 Fields[2].Str = RelocName.c_str(); 3199 Fields[3].Str = Value; 3200 Fields[4].Str = SymbolName; 3201 for (auto &Field : Fields) 3202 printField(Field); 3203 OS << Addend; 3204 OS << "\n"; 3205 } 3206 3207 template <class ELFT> 3208 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3209 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3210 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3211 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3212 if (DynRelaRegion.Size > 0) { 3213 OS << "\n'RELA' relocation section at offset " 3214 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3215 Obj->base(), 3216 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3217 printRelocHeader(OS, ELFT::Is64Bits, true); 3218 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3219 printDynamicRelocation(Obj, Rela, true); 3220 } 3221 if (DynRelRegion.Size > 0) { 3222 OS << "\n'REL' relocation section at offset " 3223 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3224 Obj->base(), 3225 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3226 printRelocHeader(OS, ELFT::Is64Bits, false); 3227 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3228 Elf_Rela Rela; 3229 Rela.r_offset = Rel.r_offset; 3230 Rela.r_info = Rel.r_info; 3231 Rela.r_addend = 0; 3232 printDynamicRelocation(Obj, Rela, false); 3233 } 3234 } 3235 if (DynPLTRelRegion.Size) { 3236 OS << "\n'PLT' relocation section at offset " 3237 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3238 Obj->base(), 3239 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3240 } 3241 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3242 printRelocHeader(OS, ELFT::Is64Bits, true); 3243 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3244 printDynamicRelocation(Obj, Rela, true); 3245 } else { 3246 printRelocHeader(OS, ELFT::Is64Bits, false); 3247 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3248 Elf_Rela Rela; 3249 Rela.r_offset = Rel.r_offset; 3250 Rela.r_info = Rel.r_info; 3251 Rela.r_addend = 0; 3252 printDynamicRelocation(Obj, Rela, false); 3253 } 3254 } 3255 } 3256 3257 // Hash histogram shows statistics of how efficient the hash was for the 3258 // dynamic symbol table. The table shows number of hash buckets for different 3259 // lengths of chains as absolute number and percentage of the total buckets. 3260 // Additionally cumulative coverage of symbols for each set of buckets. 3261 template <class ELFT> 3262 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3263 3264 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3265 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3266 3267 // Print histogram for .hash section 3268 if (HashTable) { 3269 size_t NBucket = HashTable->nbucket; 3270 size_t NChain = HashTable->nchain; 3271 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3272 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3273 size_t TotalSyms = 0; 3274 // If hash table is correct, we have at least chains with 0 length 3275 size_t MaxChain = 1; 3276 size_t CumulativeNonZero = 0; 3277 3278 if (NChain == 0 || NBucket == 0) 3279 return; 3280 3281 std::vector<size_t> ChainLen(NBucket, 0); 3282 // Go over all buckets and and note chain lengths of each bucket (total 3283 // unique chain lengths). 3284 for (size_t B = 0; B < NBucket; B++) { 3285 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3286 if (MaxChain <= ++ChainLen[B]) 3287 MaxChain++; 3288 TotalSyms += ChainLen[B]; 3289 } 3290 3291 if (!TotalSyms) 3292 return; 3293 3294 std::vector<size_t> Count(MaxChain, 0) ; 3295 // Count how long is the chain for each bucket 3296 for (size_t B = 0; B < NBucket; B++) 3297 ++Count[ChainLen[B]]; 3298 // Print Number of buckets with each chain lengths and their cumulative 3299 // coverage of the symbols 3300 OS << "Histogram for bucket list length (total of " << NBucket 3301 << " buckets)\n" 3302 << " Length Number % of total Coverage\n"; 3303 for (size_t I = 0; I < MaxChain; I++) { 3304 CumulativeNonZero += Count[I] * I; 3305 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3306 (Count[I] * 100.0) / NBucket, 3307 (CumulativeNonZero * 100.0) / TotalSyms); 3308 } 3309 } 3310 3311 // Print histogram for .gnu.hash section 3312 if (GnuHashTable) { 3313 size_t NBucket = GnuHashTable->nbuckets; 3314 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3315 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3316 if (!NumSyms) 3317 return; 3318 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3319 size_t Symndx = GnuHashTable->symndx; 3320 size_t TotalSyms = 0; 3321 size_t MaxChain = 1; 3322 size_t CumulativeNonZero = 0; 3323 3324 if (Chains.empty() || NBucket == 0) 3325 return; 3326 3327 std::vector<size_t> ChainLen(NBucket, 0); 3328 3329 for (size_t B = 0; B < NBucket; B++) { 3330 if (!Buckets[B]) 3331 continue; 3332 size_t Len = 1; 3333 for (size_t C = Buckets[B] - Symndx; 3334 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3335 if (MaxChain < ++Len) 3336 MaxChain++; 3337 ChainLen[B] = Len; 3338 TotalSyms += Len; 3339 } 3340 MaxChain++; 3341 3342 if (!TotalSyms) 3343 return; 3344 3345 std::vector<size_t> Count(MaxChain, 0) ; 3346 for (size_t B = 0; B < NBucket; B++) 3347 ++Count[ChainLen[B]]; 3348 // Print Number of buckets with each chain lengths and their cumulative 3349 // coverage of the symbols 3350 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3351 << " buckets)\n" 3352 << " Length Number % of total Coverage\n"; 3353 for (size_t I = 0; I <MaxChain; I++) { 3354 CumulativeNonZero += Count[I] * I; 3355 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3356 (Count[I] * 100.0) / NBucket, 3357 (CumulativeNonZero * 100.0) / TotalSyms); 3358 } 3359 } 3360 } 3361 3362 static std::string getGNUNoteTypeName(const uint32_t NT) { 3363 static const struct { 3364 uint32_t ID; 3365 const char *Name; 3366 } Notes[] = { 3367 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 3368 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 3369 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 3370 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 3371 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, 3372 }; 3373 3374 for (const auto &Note : Notes) 3375 if (Note.ID == NT) 3376 return std::string(Note.Name); 3377 3378 std::string string; 3379 raw_string_ostream OS(string); 3380 OS << format("Unknown note type (0x%08x)", NT); 3381 return OS.str(); 3382 } 3383 3384 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 3385 static const struct { 3386 uint32_t ID; 3387 const char *Name; 3388 } Notes[] = { 3389 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 3390 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 3391 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 3392 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 3393 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 3394 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 3395 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 3396 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 3397 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 3398 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 3399 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 3400 }; 3401 3402 for (const auto &Note : Notes) 3403 if (Note.ID == NT) 3404 return std::string(Note.Name); 3405 3406 std::string string; 3407 raw_string_ostream OS(string); 3408 OS << format("Unknown note type (0x%08x)", NT); 3409 return OS.str(); 3410 } 3411 3412 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 3413 static const struct { 3414 uint32_t ID; 3415 const char *Name; 3416 } Notes[] = { 3417 {ELF::NT_AMD_AMDGPU_HSA_METADATA, 3418 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 3419 {ELF::NT_AMD_AMDGPU_ISA, 3420 "NT_AMD_AMDGPU_ISA (ISA Version)"}, 3421 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 3422 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"} 3423 }; 3424 3425 for (const auto &Note : Notes) 3426 if (Note.ID == NT) 3427 return std::string(Note.Name); 3428 3429 std::string string; 3430 raw_string_ostream OS(string); 3431 OS << format("Unknown note type (0x%08x)", NT); 3432 return OS.str(); 3433 } 3434 3435 template <typename ELFT> 3436 static void printGNUProperty(raw_ostream &OS, uint32_t Type, uint32_t DataSize, 3437 ArrayRef<uint8_t> Data) { 3438 switch (Type) { 3439 default: 3440 OS << format(" <application-specific type 0x%x>\n", Type); 3441 return; 3442 case GNU_PROPERTY_STACK_SIZE: { 3443 OS << " stack size: "; 3444 if (DataSize == sizeof(typename ELFT::uint)) 3445 OS << format("0x%x\n", 3446 (uint64_t)(*(const typename ELFT::Addr *)Data.data())); 3447 else 3448 OS << format("<corrupt length: 0x%x>\n", DataSize); 3449 break; 3450 } 3451 case GNU_PROPERTY_NO_COPY_ON_PROTECTED: 3452 OS << " no copy on protected"; 3453 if (DataSize) 3454 OS << format(" <corrupt length: 0x%x>", DataSize); 3455 OS << "\n"; 3456 break; 3457 } 3458 } 3459 3460 template <typename ELFT> 3461 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 3462 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3463 using Elf_Word = typename ELFT::Word; 3464 3465 switch (NoteType) { 3466 default: 3467 return; 3468 case ELF::NT_GNU_ABI_TAG: { 3469 static const char *OSNames[] = { 3470 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 3471 }; 3472 3473 StringRef OSName = "Unknown"; 3474 if (Words[0] < array_lengthof(OSNames)) 3475 OSName = OSNames[Words[0]]; 3476 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 3477 3478 if (Words.size() < 4) 3479 OS << " <corrupt GNU_ABI_TAG>"; 3480 else 3481 OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "." 3482 << Patch; 3483 break; 3484 } 3485 case ELF::NT_GNU_BUILD_ID: { 3486 OS << " Build ID: "; 3487 ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size); 3488 for (const auto &B : ID) 3489 OS << format_hex_no_prefix(B, 2); 3490 break; 3491 } 3492 case ELF::NT_GNU_GOLD_VERSION: 3493 OS << " Version: " 3494 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3495 break; 3496 case ELF::NT_GNU_PROPERTY_TYPE_0: 3497 OS << " Properties:"; 3498 3499 ArrayRef<uint8_t> Arr(reinterpret_cast<const uint8_t *>(Words.data()), 3500 Size); 3501 while (Arr.size() >= 8) { 3502 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); 3503 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); 3504 Arr = Arr.drop_front(8); 3505 3506 // Take padding size into account if present. 3507 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); 3508 if (Arr.size() < PaddedSize) { 3509 OS << format(" <corrupt type (0x%x) datasz: 0x%x>\n", Type, 3510 DataSize); 3511 break; 3512 } 3513 printGNUProperty<ELFT>(OS, Type, DataSize, Arr.take_front(PaddedSize)); 3514 Arr = Arr.drop_front(PaddedSize); 3515 } 3516 3517 if (!Arr.empty()) 3518 OS << " <corrupted GNU_PROPERTY_TYPE_0>"; 3519 break; 3520 } 3521 OS << '\n'; 3522 } 3523 3524 template <typename ELFT> 3525 static void printAMDGPUNote(raw_ostream &OS, uint32_t NoteType, 3526 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3527 switch (NoteType) { 3528 default: 3529 return; 3530 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 3531 OS << " HSA Metadata:\n" 3532 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3533 break; 3534 case ELF::NT_AMD_AMDGPU_ISA: 3535 OS << " ISA Version:\n" 3536 << " " 3537 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3538 break; 3539 case ELF::NT_AMD_AMDGPU_PAL_METADATA: 3540 const uint32_t *PALMetadataBegin = reinterpret_cast<const uint32_t *>(Words.data()); 3541 const uint32_t *PALMetadataEnd = PALMetadataBegin + Size; 3542 std::vector<uint32_t> PALMetadata(PALMetadataBegin, PALMetadataEnd); 3543 std::string PALMetadataString; 3544 auto Error = AMDGPU::PALMD::toString(PALMetadata, PALMetadataString); 3545 OS << " PAL Metadata:\n"; 3546 if (Error) { 3547 OS << " Invalid"; 3548 return; 3549 } 3550 OS << PALMetadataString; 3551 break; 3552 } 3553 OS.flush(); 3554 } 3555 3556 template <class ELFT> 3557 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3558 const Elf_Ehdr *e = Obj->getHeader(); 3559 bool IsCore = e->e_type == ELF::ET_CORE; 3560 3561 auto PrintHeader = [&](const typename ELFT::Off Offset, 3562 const typename ELFT::Addr Size) { 3563 OS << "Displaying notes found at file offset " << format_hex(Offset, 10) 3564 << " with length " << format_hex(Size, 10) << ":\n" 3565 << " Owner Data size\tDescription\n"; 3566 }; 3567 3568 auto ProcessNote = [&](const Elf_Note &Note) { 3569 StringRef Name = Note.getName(); 3570 ArrayRef<Elf_Word> Descriptor = Note.getDesc(); 3571 Elf_Word Type = Note.getType(); 3572 3573 OS << " " << Name << std::string(22 - Name.size(), ' ') 3574 << format_hex(Descriptor.size(), 10) << '\t'; 3575 3576 if (Name == "GNU") { 3577 OS << getGNUNoteTypeName(Type) << '\n'; 3578 printGNUNote<ELFT>(OS, Type, Descriptor, Descriptor.size()); 3579 } else if (Name == "FreeBSD") { 3580 OS << getFreeBSDNoteTypeName(Type) << '\n'; 3581 } else if (Name == "AMD") { 3582 OS << getAMDGPUNoteTypeName(Type) << '\n'; 3583 printAMDGPUNote<ELFT>(OS, Type, Descriptor, Descriptor.size()); 3584 } else { 3585 OS << "Unknown note type: (" << format_hex(Type, 10) << ')'; 3586 } 3587 OS << '\n'; 3588 }; 3589 3590 if (IsCore) { 3591 for (const auto &P : unwrapOrError(Obj->program_headers())) { 3592 if (P.p_type != PT_NOTE) 3593 continue; 3594 PrintHeader(P.p_offset, P.p_filesz); 3595 Error Err = Error::success(); 3596 for (const auto &Note : Obj->notes(P, Err)) 3597 ProcessNote(Note); 3598 if (Err) 3599 error(std::move(Err)); 3600 } 3601 } else { 3602 for (const auto &S : unwrapOrError(Obj->sections())) { 3603 if (S.sh_type != SHT_NOTE) 3604 continue; 3605 PrintHeader(S.sh_offset, S.sh_size); 3606 Error Err = Error::success(); 3607 for (const auto &Note : Obj->notes(S, Err)) 3608 ProcessNote(Note); 3609 if (Err) 3610 error(std::move(Err)); 3611 } 3612 } 3613 } 3614 3615 template <class ELFT> 3616 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 3617 OS << "printELFLinkerOptions not implemented!\n"; 3618 } 3619 3620 template <class ELFT> 3621 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 3622 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3623 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3624 OS.PadToColumn(2); 3625 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3626 OS.PadToColumn(11 + Bias); 3627 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 3628 OS.PadToColumn(22 + Bias); 3629 OS << format_hex_no_prefix(*E, 8 + Bias); 3630 OS.PadToColumn(31 + 2 * Bias); 3631 OS << Purpose << "\n"; 3632 }; 3633 3634 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 3635 OS << " Canonical gp value: " 3636 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 3637 3638 OS << " Reserved entries:\n"; 3639 OS << " Address Access Initial Purpose\n"; 3640 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 3641 if (Parser.getGotModulePointer()) 3642 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 3643 3644 if (!Parser.getLocalEntries().empty()) { 3645 OS << "\n"; 3646 OS << " Local entries:\n"; 3647 OS << " Address Access Initial\n"; 3648 for (auto &E : Parser.getLocalEntries()) 3649 PrintEntry(&E, ""); 3650 } 3651 3652 if (Parser.IsStatic) 3653 return; 3654 3655 if (!Parser.getGlobalEntries().empty()) { 3656 OS << "\n"; 3657 OS << " Global entries:\n"; 3658 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 3659 for (auto &E : Parser.getGlobalEntries()) { 3660 const Elf_Sym *Sym = Parser.getGotSym(&E); 3661 std::string SymName = this->dumper()->getFullSymbolName( 3662 Sym, this->dumper()->getDynamicStringTable(), false); 3663 3664 OS.PadToColumn(2); 3665 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3666 OS.PadToColumn(11 + Bias); 3667 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 3668 OS.PadToColumn(22 + Bias); 3669 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3670 OS.PadToColumn(31 + 2 * Bias); 3671 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3672 OS.PadToColumn(40 + 3 * Bias); 3673 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3674 OS.PadToColumn(48 + 3 * Bias); 3675 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3676 this->dumper()->dynamic_symbols().begin()); 3677 OS.PadToColumn(52 + 3 * Bias); 3678 OS << SymName << "\n"; 3679 } 3680 } 3681 3682 if (!Parser.getOtherEntries().empty()) 3683 OS << "\n Number of TLS and multi-GOT entries " 3684 << Parser.getOtherEntries().size() << "\n"; 3685 } 3686 3687 template <class ELFT> 3688 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 3689 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3690 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3691 OS.PadToColumn(2); 3692 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3693 OS.PadToColumn(11 + Bias); 3694 OS << format_hex_no_prefix(*E, 8 + Bias); 3695 OS.PadToColumn(20 + 2 * Bias); 3696 OS << Purpose << "\n"; 3697 }; 3698 3699 OS << "PLT GOT:\n\n"; 3700 3701 OS << " Reserved entries:\n"; 3702 OS << " Address Initial Purpose\n"; 3703 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 3704 if (Parser.getPltModulePointer()) 3705 PrintEntry(Parser.getGotModulePointer(), "Module pointer"); 3706 3707 if (!Parser.getPltEntries().empty()) { 3708 OS << "\n"; 3709 OS << " Entries:\n"; 3710 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 3711 for (auto &E : Parser.getPltEntries()) { 3712 const Elf_Sym *Sym = Parser.getPltSym(&E); 3713 std::string SymName = this->dumper()->getFullSymbolName( 3714 Sym, this->dumper()->getDynamicStringTable(), false); 3715 3716 OS.PadToColumn(2); 3717 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3718 OS.PadToColumn(11 + Bias); 3719 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3720 OS.PadToColumn(20 + 2 * Bias); 3721 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3722 OS.PadToColumn(29 + 3 * Bias); 3723 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3724 OS.PadToColumn(37 + 3 * Bias); 3725 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3726 this->dumper()->dynamic_symbols().begin()); 3727 OS.PadToColumn(41 + 3 * Bias); 3728 OS << SymName << "\n"; 3729 } 3730 } 3731 } 3732 3733 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3734 const Elf_Ehdr *e = Obj->getHeader(); 3735 { 3736 DictScope D(W, "ElfHeader"); 3737 { 3738 DictScope D(W, "Ident"); 3739 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3740 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3741 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3742 makeArrayRef(ElfDataEncoding)); 3743 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3744 3745 auto OSABI = makeArrayRef(ElfOSABI); 3746 if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 3747 e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 3748 switch (e->e_machine) { 3749 case ELF::EM_AMDGPU: 3750 OSABI = makeArrayRef(AMDGPUElfOSABI); 3751 break; 3752 case ELF::EM_ARM: 3753 OSABI = makeArrayRef(ARMElfOSABI); 3754 break; 3755 case ELF::EM_TI_C6000: 3756 OSABI = makeArrayRef(C6000ElfOSABI); 3757 break; 3758 } 3759 } 3760 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI); 3761 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3762 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3763 } 3764 3765 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3766 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3767 W.printNumber("Version", e->e_version); 3768 W.printHex("Entry", e->e_entry); 3769 W.printHex("ProgramHeaderOffset", e->e_phoff); 3770 W.printHex("SectionHeaderOffset", e->e_shoff); 3771 if (e->e_machine == EM_MIPS) 3772 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3773 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3774 unsigned(ELF::EF_MIPS_MACH)); 3775 else if (e->e_machine == EM_AMDGPU) 3776 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 3777 unsigned(ELF::EF_AMDGPU_MACH)); 3778 else if (e->e_machine == EM_RISCV) 3779 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3780 else 3781 W.printFlags("Flags", e->e_flags); 3782 W.printNumber("HeaderSize", e->e_ehsize); 3783 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3784 W.printNumber("ProgramHeaderCount", e->e_phnum); 3785 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3786 W.printNumber("SectionHeaderCount", e->e_shnum); 3787 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3788 } 3789 } 3790 3791 template <class ELFT> 3792 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3793 DictScope Lists(W, "Groups"); 3794 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 3795 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 3796 for (const GroupSection &G : V) { 3797 DictScope D(W, "Group"); 3798 W.printNumber("Name", G.Name, G.ShName); 3799 W.printNumber("Index", G.Index); 3800 W.printNumber("Link", G.Link); 3801 W.printNumber("Info", G.Info); 3802 W.printHex("Type", getGroupType(G.Type), G.Type); 3803 W.startLine() << "Signature: " << G.Signature << "\n"; 3804 3805 ListScope L(W, "Section(s) in group"); 3806 for (const GroupMember &GM : G.Members) { 3807 const GroupSection *MainGroup = Map[GM.Index]; 3808 if (MainGroup != &G) { 3809 W.flush(); 3810 errs() << "Error: " << GM.Name << " (" << GM.Index 3811 << ") in a group " + G.Name + " (" << G.Index 3812 << ") is already in a group " + MainGroup->Name + " (" 3813 << MainGroup->Index << ")\n"; 3814 errs().flush(); 3815 continue; 3816 } 3817 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 3818 } 3819 } 3820 3821 if (V.empty()) 3822 W.startLine() << "There are no group sections in the file.\n"; 3823 } 3824 3825 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3826 ListScope D(W, "Relocations"); 3827 3828 int SectionNumber = -1; 3829 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3830 ++SectionNumber; 3831 3832 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA && 3833 Sec.sh_type != ELF::SHT_ANDROID_REL && 3834 Sec.sh_type != ELF::SHT_ANDROID_RELA) 3835 continue; 3836 3837 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3838 3839 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3840 W.indent(); 3841 3842 printRelocations(&Sec, Obj); 3843 3844 W.unindent(); 3845 W.startLine() << "}\n"; 3846 } 3847 } 3848 3849 template <class ELFT> 3850 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3851 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3852 3853 switch (Sec->sh_type) { 3854 case ELF::SHT_REL: 3855 for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) { 3856 Elf_Rela Rela; 3857 Rela.r_offset = R.r_offset; 3858 Rela.r_info = R.r_info; 3859 Rela.r_addend = 0; 3860 printRelocation(Obj, Rela, SymTab); 3861 } 3862 break; 3863 case ELF::SHT_RELA: 3864 for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec))) 3865 printRelocation(Obj, R, SymTab); 3866 break; 3867 case ELF::SHT_ANDROID_REL: 3868 case ELF::SHT_ANDROID_RELA: 3869 for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec))) 3870 printRelocation(Obj, R, SymTab); 3871 break; 3872 } 3873 } 3874 3875 template <class ELFT> 3876 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3877 const Elf_Shdr *SymTab) { 3878 SmallString<32> RelocName; 3879 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3880 StringRef TargetName; 3881 const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab)); 3882 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3883 const Elf_Shdr *Sec = unwrapOrError( 3884 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3885 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3886 } else if (Sym) { 3887 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3888 TargetName = unwrapOrError(Sym->getName(StrTable)); 3889 } 3890 3891 if (opts::ExpandRelocs) { 3892 DictScope Group(W, "Relocation"); 3893 W.printHex("Offset", Rel.r_offset); 3894 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3895 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 3896 Rel.getSymbol(Obj->isMips64EL())); 3897 W.printHex("Addend", Rel.r_addend); 3898 } else { 3899 raw_ostream &OS = W.startLine(); 3900 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3901 << (!TargetName.empty() ? TargetName : "-") << " " 3902 << W.hex(Rel.r_addend) << "\n"; 3903 } 3904 } 3905 3906 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3907 ListScope SectionsD(W, "Sections"); 3908 3909 int SectionIndex = -1; 3910 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3911 ++SectionIndex; 3912 3913 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3914 3915 DictScope SectionD(W, "Section"); 3916 W.printNumber("Index", SectionIndex); 3917 W.printNumber("Name", Name, Sec.sh_name); 3918 W.printHex( 3919 "Type", 3920 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 3921 Sec.sh_type); 3922 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3923 std::end(ElfSectionFlags)); 3924 switch (Obj->getHeader()->e_machine) { 3925 case EM_ARM: 3926 SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags), 3927 std::end(ElfARMSectionFlags)); 3928 break; 3929 case EM_HEXAGON: 3930 SectionFlags.insert(SectionFlags.end(), 3931 std::begin(ElfHexagonSectionFlags), 3932 std::end(ElfHexagonSectionFlags)); 3933 break; 3934 case EM_MIPS: 3935 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3936 std::end(ElfMipsSectionFlags)); 3937 break; 3938 case EM_X86_64: 3939 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3940 std::end(ElfX86_64SectionFlags)); 3941 break; 3942 case EM_XCORE: 3943 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3944 std::end(ElfXCoreSectionFlags)); 3945 break; 3946 default: 3947 // Nothing to do. 3948 break; 3949 } 3950 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3951 W.printHex("Address", Sec.sh_addr); 3952 W.printHex("Offset", Sec.sh_offset); 3953 W.printNumber("Size", Sec.sh_size); 3954 W.printNumber("Link", Sec.sh_link); 3955 W.printNumber("Info", Sec.sh_info); 3956 W.printNumber("AddressAlignment", Sec.sh_addralign); 3957 W.printNumber("EntrySize", Sec.sh_entsize); 3958 3959 if (opts::SectionRelocations) { 3960 ListScope D(W, "Relocations"); 3961 printRelocations(&Sec, Obj); 3962 } 3963 3964 if (opts::SectionSymbols) { 3965 ListScope D(W, "Symbols"); 3966 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3967 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3968 3969 for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) { 3970 const Elf_Shdr *SymSec = unwrapOrError( 3971 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3972 if (SymSec == &Sec) 3973 printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(), 3974 StrTable, false); 3975 } 3976 } 3977 3978 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3979 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3980 W.printBinaryBlock("SectionData", 3981 StringRef((const char *)Data.data(), Data.size())); 3982 } 3983 } 3984 } 3985 3986 template <class ELFT> 3987 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3988 const Elf_Sym *First, StringRef StrTable, 3989 bool IsDynamic) { 3990 unsigned SectionIndex = 0; 3991 StringRef SectionName; 3992 this->dumper()->getSectionNameIndex(Symbol, First, SectionName, SectionIndex); 3993 std::string FullSymbolName = 3994 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3995 unsigned char SymbolType = Symbol->getType(); 3996 3997 DictScope D(W, "Symbol"); 3998 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3999 W.printHex("Value", Symbol->st_value); 4000 W.printNumber("Size", Symbol->st_size); 4001 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4002 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4003 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4004 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4005 else 4006 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 4007 if (Symbol->st_other == 0) 4008 // Usually st_other flag is zero. Do not pollute the output 4009 // by flags enumeration in that case. 4010 W.printNumber("Other", 0); 4011 else { 4012 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 4013 std::end(ElfSymOtherFlags)); 4014 if (Obj->getHeader()->e_machine == EM_MIPS) { 4015 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 4016 // flag overlapped with other ST_MIPS_xxx flags. So consider both 4017 // cases separately. 4018 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 4019 SymOtherFlags.insert(SymOtherFlags.end(), 4020 std::begin(ElfMips16SymOtherFlags), 4021 std::end(ElfMips16SymOtherFlags)); 4022 else 4023 SymOtherFlags.insert(SymOtherFlags.end(), 4024 std::begin(ElfMipsSymOtherFlags), 4025 std::end(ElfMipsSymOtherFlags)); 4026 } 4027 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 4028 } 4029 W.printHex("Section", SectionName, SectionIndex); 4030 } 4031 4032 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 4033 ListScope Group(W, "Symbols"); 4034 this->dumper()->printSymbolsHelper(false); 4035 } 4036 4037 template <class ELFT> 4038 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 4039 ListScope Group(W, "DynamicSymbols"); 4040 this->dumper()->printSymbolsHelper(true); 4041 } 4042 4043 template <class ELFT> 4044 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 4045 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 4046 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 4047 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 4048 if (DynRelRegion.Size && DynRelaRegion.Size) 4049 report_fatal_error("There are both REL and RELA dynamic relocations"); 4050 W.startLine() << "Dynamic Relocations {\n"; 4051 W.indent(); 4052 if (DynRelaRegion.Size > 0) 4053 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 4054 printDynamicRelocation(Obj, Rela); 4055 else 4056 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 4057 Elf_Rela Rela; 4058 Rela.r_offset = Rel.r_offset; 4059 Rela.r_info = Rel.r_info; 4060 Rela.r_addend = 0; 4061 printDynamicRelocation(Obj, Rela); 4062 } 4063 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 4064 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 4065 printDynamicRelocation(Obj, Rela); 4066 else 4067 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 4068 Elf_Rela Rela; 4069 Rela.r_offset = Rel.r_offset; 4070 Rela.r_info = Rel.r_info; 4071 Rela.r_addend = 0; 4072 printDynamicRelocation(Obj, Rela); 4073 } 4074 W.unindent(); 4075 W.startLine() << "}\n"; 4076 } 4077 4078 template <class ELFT> 4079 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 4080 SmallString<32> RelocName; 4081 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 4082 StringRef SymbolName; 4083 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 4084 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 4085 SymbolName = 4086 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 4087 if (opts::ExpandRelocs) { 4088 DictScope Group(W, "Relocation"); 4089 W.printHex("Offset", Rel.r_offset); 4090 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 4091 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 4092 W.printHex("Addend", Rel.r_addend); 4093 } else { 4094 raw_ostream &OS = W.startLine(); 4095 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 4096 << (!SymbolName.empty() ? SymbolName : "-") << " " 4097 << W.hex(Rel.r_addend) << "\n"; 4098 } 4099 } 4100 4101 template <class ELFT> 4102 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 4103 ListScope L(W, "ProgramHeaders"); 4104 4105 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 4106 DictScope P(W, "ProgramHeader"); 4107 W.printHex("Type", 4108 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 4109 Phdr.p_type); 4110 W.printHex("Offset", Phdr.p_offset); 4111 W.printHex("VirtualAddress", Phdr.p_vaddr); 4112 W.printHex("PhysicalAddress", Phdr.p_paddr); 4113 W.printNumber("FileSize", Phdr.p_filesz); 4114 W.printNumber("MemSize", Phdr.p_memsz); 4115 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 4116 W.printNumber("Alignment", Phdr.p_align); 4117 } 4118 } 4119 4120 template <class ELFT> 4121 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 4122 W.startLine() << "Hash Histogram not implemented!\n"; 4123 } 4124 4125 template <class ELFT> 4126 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 4127 W.startLine() << "printNotes not implemented!\n"; 4128 } 4129 4130 template <class ELFT> 4131 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 4132 ListScope L(W, "LinkerOptions"); 4133 4134 for (const Elf_Shdr &Shdr : unwrapOrError(Obj->sections())) { 4135 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) 4136 continue; 4137 4138 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Shdr)); 4139 for (const uint8_t *P = Contents.begin(), *E = Contents.end(); P < E; ) { 4140 StringRef Key = StringRef(reinterpret_cast<const char *>(P)); 4141 StringRef Value = 4142 StringRef(reinterpret_cast<const char *>(P) + Key.size() + 1); 4143 4144 W.printString(Key, Value); 4145 4146 P = P + Key.size() + Value.size() + 2; 4147 } 4148 } 4149 } 4150 4151 template <class ELFT> 4152 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 4153 auto PrintEntry = [&](const Elf_Addr *E) { 4154 W.printHex("Address", Parser.getGotAddress(E)); 4155 W.printNumber("Access", Parser.getGotOffset(E)); 4156 W.printHex("Initial", *E); 4157 }; 4158 4159 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 4160 4161 W.printHex("Canonical gp value", Parser.getGp()); 4162 { 4163 ListScope RS(W, "Reserved entries"); 4164 { 4165 DictScope D(W, "Entry"); 4166 PrintEntry(Parser.getGotLazyResolver()); 4167 W.printString("Purpose", StringRef("Lazy resolver")); 4168 } 4169 4170 if (Parser.getGotModulePointer()) { 4171 DictScope D(W, "Entry"); 4172 PrintEntry(Parser.getGotModulePointer()); 4173 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 4174 } 4175 } 4176 { 4177 ListScope LS(W, "Local entries"); 4178 for (auto &E : Parser.getLocalEntries()) { 4179 DictScope D(W, "Entry"); 4180 PrintEntry(&E); 4181 } 4182 } 4183 4184 if (Parser.IsStatic) 4185 return; 4186 4187 { 4188 ListScope GS(W, "Global entries"); 4189 for (auto &E : Parser.getGlobalEntries()) { 4190 DictScope D(W, "Entry"); 4191 4192 PrintEntry(&E); 4193 4194 const Elf_Sym *Sym = Parser.getGotSym(&E); 4195 W.printHex("Value", Sym->st_value); 4196 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4197 4198 unsigned SectionIndex = 0; 4199 StringRef SectionName; 4200 this->dumper()->getSectionNameIndex( 4201 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4202 SectionIndex); 4203 W.printHex("Section", SectionName, SectionIndex); 4204 4205 std::string SymName = this->dumper()->getFullSymbolName( 4206 Sym, this->dumper()->getDynamicStringTable(), true); 4207 W.printNumber("Name", SymName, Sym->st_name); 4208 } 4209 } 4210 4211 W.printNumber("Number of TLS and multi-GOT entries", 4212 uint64_t(Parser.getOtherEntries().size())); 4213 } 4214 4215 template <class ELFT> 4216 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 4217 auto PrintEntry = [&](const Elf_Addr *E) { 4218 W.printHex("Address", Parser.getPltAddress(E)); 4219 W.printHex("Initial", *E); 4220 }; 4221 4222 DictScope GS(W, "PLT GOT"); 4223 4224 { 4225 ListScope RS(W, "Reserved entries"); 4226 { 4227 DictScope D(W, "Entry"); 4228 PrintEntry(Parser.getPltLazyResolver()); 4229 W.printString("Purpose", StringRef("PLT lazy resolver")); 4230 } 4231 4232 if (auto E = Parser.getPltModulePointer()) { 4233 DictScope D(W, "Entry"); 4234 PrintEntry(E); 4235 W.printString("Purpose", StringRef("Module pointer")); 4236 } 4237 } 4238 { 4239 ListScope LS(W, "Entries"); 4240 for (auto &E : Parser.getPltEntries()) { 4241 DictScope D(W, "Entry"); 4242 PrintEntry(&E); 4243 4244 const Elf_Sym *Sym = Parser.getPltSym(&E); 4245 W.printHex("Value", Sym->st_value); 4246 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4247 4248 unsigned SectionIndex = 0; 4249 StringRef SectionName; 4250 this->dumper()->getSectionNameIndex( 4251 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4252 SectionIndex); 4253 W.printHex("Section", SectionName, SectionIndex); 4254 4255 std::string SymName = 4256 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true); 4257 W.printNumber("Name", SymName, Sym->st_name); 4258 } 4259 } 4260 } 4261