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