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