1 //===-- ELFDumper.cpp - ELF-specific dumper ---------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "ARMAttributeParser.h" 16 #include "ARMEHABIPrinter.h" 17 #include "Error.h" 18 #include "ObjDumper.h" 19 #include "StackMapPrinter.h" 20 #include "llvm-readobj.h" 21 #include "llvm/ADT/Optional.h" 22 #include "llvm/ADT/SmallString.h" 23 #include "llvm/ADT/StringExtras.h" 24 #include "llvm/Object/ELFObjectFile.h" 25 #include "llvm/Support/ARMBuildAttributes.h" 26 #include "llvm/Support/Compiler.h" 27 #include "llvm/Support/Format.h" 28 #include "llvm/Support/FormattedStream.h" 29 #include "llvm/Support/MathExtras.h" 30 #include "llvm/Support/MipsABIFlags.h" 31 #include "llvm/Support/ScopedPrinter.h" 32 #include "llvm/Support/raw_ostream.h" 33 34 using namespace llvm; 35 using namespace llvm::object; 36 using namespace ELF; 37 38 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 39 case ns::enum: return #enum; 40 41 #define ENUM_ENT(enum, altName) \ 42 { #enum, altName, ELF::enum } 43 44 #define ENUM_ENT_1(enum) \ 45 { #enum, #enum, ELF::enum } 46 47 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 48 case ns::enum: \ 49 return std::string(#enum).substr(3); 50 51 #define TYPEDEF_ELF_TYPES(ELFT) \ 52 typedef ELFFile<ELFT> ELFO; \ 53 typedef typename ELFO::Elf_Shdr Elf_Shdr; \ 54 typedef typename ELFO::Elf_Sym Elf_Sym; \ 55 typedef typename ELFO::Elf_Dyn Elf_Dyn; \ 56 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; \ 57 typedef typename ELFO::Elf_Rel Elf_Rel; \ 58 typedef typename ELFO::Elf_Rela Elf_Rela; \ 59 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; \ 60 typedef typename ELFO::Elf_Phdr Elf_Phdr; \ 61 typedef typename ELFO::Elf_Half Elf_Half; \ 62 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; \ 63 typedef typename ELFO::Elf_Word Elf_Word; \ 64 typedef typename ELFO::Elf_Hash Elf_Hash; \ 65 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; \ 66 typedef typename ELFO::uintX_t uintX_t; 67 68 namespace { 69 70 template <class ELFT> class DumpStyle; 71 72 /// Represents a contiguous uniform range in the file. We cannot just create a 73 /// range directly because when creating one of these from the .dynamic table 74 /// the size, entity size and virtual address are different entries in arbitrary 75 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 76 struct DynRegionInfo { 77 DynRegionInfo() : Addr(nullptr), Size(0), EntSize(0) {} 78 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 79 : Addr(A), Size(S), EntSize(ES) {} 80 /// \brief Address in current address space. 81 const void *Addr; 82 /// \brief Size in bytes of the region. 83 uint64_t Size; 84 /// \brief Size of each entity in the region. 85 uint64_t EntSize; 86 87 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 88 const Type *Start = reinterpret_cast<const Type *>(Addr); 89 if (!Start) 90 return {Start, Start}; 91 if (EntSize != sizeof(Type) || Size % EntSize) 92 reportError("Invalid entity size"); 93 return {Start, Start + (Size / EntSize)}; 94 } 95 }; 96 97 template<typename ELFT> 98 class ELFDumper : public ObjDumper { 99 public: 100 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 101 102 void printFileHeaders() override; 103 void printSections() override; 104 void printRelocations() override; 105 void printDynamicRelocations() override; 106 void printSymbols() override; 107 void printDynamicSymbols() override; 108 void printUnwindInfo() override; 109 110 void printDynamicTable() override; 111 void printNeededLibraries() override; 112 void printProgramHeaders() override; 113 void printHashTable() override; 114 void printGnuHashTable() override; 115 void printLoadName() override; 116 void printVersionInfo() override; 117 void printGroupSections() override; 118 119 void printAttributes() override; 120 void printMipsPLTGOT() override; 121 void printMipsABIFlags() override; 122 void printMipsReginfo() override; 123 void printMipsOptions() override; 124 125 void printStackMap() const override; 126 127 void printHashHistogram() override; 128 129 private: 130 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 131 typedef ELFFile<ELFT> ELFO; 132 typedef typename ELFO::Elf_Shdr Elf_Shdr; 133 typedef typename ELFO::Elf_Sym Elf_Sym; 134 typedef typename ELFO::Elf_Sym_Range Elf_Sym_Range; 135 typedef typename ELFO::Elf_Dyn Elf_Dyn; 136 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 137 typedef typename ELFO::Elf_Rel Elf_Rel; 138 typedef typename ELFO::Elf_Rela Elf_Rela; 139 typedef typename ELFO::Elf_Rel_Range Elf_Rel_Range; 140 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; 141 typedef typename ELFO::Elf_Phdr Elf_Phdr; 142 typedef typename ELFO::Elf_Half Elf_Half; 143 typedef typename ELFO::Elf_Hash Elf_Hash; 144 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; 145 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; 146 typedef typename ELFO::Elf_Word Elf_Word; 147 typedef typename ELFO::uintX_t uintX_t; 148 typedef typename ELFO::Elf_Versym Elf_Versym; 149 typedef typename ELFO::Elf_Verneed Elf_Verneed; 150 typedef typename ELFO::Elf_Vernaux Elf_Vernaux; 151 typedef typename ELFO::Elf_Verdef Elf_Verdef; 152 typedef typename ELFO::Elf_Verdaux Elf_Verdaux; 153 154 DynRegionInfo checkDRI(DynRegionInfo DRI) { 155 if (DRI.Addr < Obj->base() || 156 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 157 error(llvm::object::object_error::parse_failed); 158 return DRI; 159 } 160 161 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 162 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 163 } 164 165 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 166 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 167 } 168 169 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 170 171 void printValue(uint64_t Type, uint64_t Value); 172 173 StringRef getDynamicString(uint64_t Offset) const; 174 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 175 bool &IsDefault) const; 176 void LoadVersionMap() const; 177 void LoadVersionNeeds(const Elf_Shdr *ec) const; 178 void LoadVersionDefs(const Elf_Shdr *sec) const; 179 180 const ELFO *Obj; 181 DynRegionInfo DynRelRegion; 182 DynRegionInfo DynRelaRegion; 183 DynRegionInfo DynPLTRelRegion; 184 DynRegionInfo DynSymRegion; 185 DynRegionInfo DynamicTable; 186 StringRef DynamicStringTable; 187 StringRef SOName; 188 const Elf_Hash *HashTable = nullptr; 189 const Elf_GnuHash *GnuHashTable = nullptr; 190 const Elf_Shdr *DotSymtabSec = nullptr; 191 StringRef DynSymtabName; 192 ArrayRef<Elf_Word> ShndxTable; 193 194 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 195 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 196 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 197 198 // Records for each version index the corresponding Verdef or Vernaux entry. 199 // This is filled the first time LoadVersionMap() is called. 200 class VersionMapEntry : public PointerIntPair<const void *, 1> { 201 public: 202 // If the integer is 0, this is an Elf_Verdef*. 203 // If the integer is 1, this is an Elf_Vernaux*. 204 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 205 VersionMapEntry(const Elf_Verdef *verdef) 206 : PointerIntPair<const void *, 1>(verdef, 0) {} 207 VersionMapEntry(const Elf_Vernaux *vernaux) 208 : PointerIntPair<const void *, 1>(vernaux, 1) {} 209 bool isNull() const { return getPointer() == nullptr; } 210 bool isVerdef() const { return !isNull() && getInt() == 0; } 211 bool isVernaux() const { return !isNull() && getInt() == 1; } 212 const Elf_Verdef *getVerdef() const { 213 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 214 } 215 const Elf_Vernaux *getVernaux() const { 216 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 217 } 218 }; 219 mutable SmallVector<VersionMapEntry, 16> VersionMap; 220 221 public: 222 Elf_Dyn_Range dynamic_table() const { 223 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 224 } 225 226 Elf_Sym_Range dynamic_symbols() const { 227 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 228 } 229 230 Elf_Rel_Range dyn_rels() const; 231 Elf_Rela_Range dyn_relas() const; 232 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 233 bool IsDynamic) const; 234 235 void printSymbolsHelper(bool IsDynamic) const; 236 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 237 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 238 StringRef getDynamicStringTable() const { return DynamicStringTable; } 239 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 240 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 241 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 242 const Elf_Hash *getHashTable() const { return HashTable; } 243 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 244 }; 245 246 template <class ELFT> 247 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 248 StringRef StrTable, SymtabName; 249 size_t Entries = 0; 250 Elf_Sym_Range Syms(nullptr, nullptr); 251 if (IsDynamic) { 252 StrTable = DynamicStringTable; 253 Syms = dynamic_symbols(); 254 SymtabName = DynSymtabName; 255 if (DynSymRegion.Addr) 256 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 257 } else { 258 if (!DotSymtabSec) 259 return; 260 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 261 Syms = Obj->symbols(DotSymtabSec); 262 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 263 Entries = DotSymtabSec->getEntityCount(); 264 } 265 if (Syms.begin() == Syms.end()) 266 return; 267 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 268 for (const auto &Sym : Syms) 269 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 270 } 271 272 template <typename ELFT> class DumpStyle { 273 public: 274 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 275 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 276 277 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 278 virtual ~DumpStyle() {} 279 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 280 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 281 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 282 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 283 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 284 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 285 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 286 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 287 size_t Offset) { 288 return; 289 } 290 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 291 const Elf_Sym *FirstSym, StringRef StrTable, 292 bool IsDynamic) = 0; 293 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 294 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 295 const ELFDumper<ELFT> *dumper() const { return Dumper; } 296 private: 297 const ELFDumper<ELFT> *Dumper; 298 }; 299 300 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 301 formatted_raw_ostream OS; 302 public: 303 TYPEDEF_ELF_TYPES(ELFT) 304 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 305 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 306 void printFileHeaders(const ELFO *Obj) override; 307 void printGroupSections(const ELFFile<ELFT> *Obj) override; 308 void printRelocations(const ELFO *Obj) override; 309 void printSections(const ELFO *Obj) override; 310 void printSymbols(const ELFO *Obj) override; 311 void printDynamicSymbols(const ELFO *Obj) override; 312 void printDynamicRelocations(const ELFO *Obj) override; 313 virtual void printSymtabMessage(const ELFO *Obj, StringRef Name, 314 size_t Offset) override; 315 void printProgramHeaders(const ELFO *Obj) override; 316 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 317 318 private: 319 struct Field { 320 StringRef Str; 321 unsigned Column; 322 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 323 Field(unsigned Col) : Str(""), Column(Col) {} 324 }; 325 326 template <typename T, typename TEnum> 327 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 328 for (const auto &EnumItem : EnumValues) 329 if (EnumItem.Value == Value) 330 return EnumItem.AltName; 331 return to_hexString(Value, false); 332 } 333 334 formatted_raw_ostream &printField(struct Field F) { 335 if (F.Column != 0) 336 OS.PadToColumn(F.Column); 337 OS << F.Str; 338 OS.flush(); 339 return OS; 340 } 341 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 342 const Elf_Rela &R, bool IsRela); 343 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 344 StringRef StrTable, bool IsDynamic) override; 345 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 346 const Elf_Sym *FirstSym); 347 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 348 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 349 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 350 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 351 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 352 }; 353 354 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 355 public: 356 TYPEDEF_ELF_TYPES(ELFT) 357 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 358 : DumpStyle<ELFT>(Dumper), W(W) {} 359 360 void printFileHeaders(const ELFO *Obj) override; 361 void printGroupSections(const ELFFile<ELFT> *Obj) override; 362 void printRelocations(const ELFO *Obj) override; 363 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 364 void printSections(const ELFO *Obj) override; 365 void printSymbols(const ELFO *Obj) override; 366 void printDynamicSymbols(const ELFO *Obj) override; 367 void printDynamicRelocations(const ELFO *Obj) override; 368 void printProgramHeaders(const ELFO *Obj) override; 369 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 370 371 private: 372 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 373 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 374 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 375 StringRef StrTable, bool IsDynamic) override; 376 ScopedPrinter &W; 377 }; 378 379 } // namespace 380 381 namespace llvm { 382 383 template <class ELFT> 384 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 385 ScopedPrinter &Writer, 386 std::unique_ptr<ObjDumper> &Result) { 387 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 388 return readobj_error::success; 389 } 390 391 std::error_code createELFDumper(const object::ObjectFile *Obj, 392 ScopedPrinter &Writer, 393 std::unique_ptr<ObjDumper> &Result) { 394 // Little-endian 32-bit 395 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 396 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 397 398 // Big-endian 32-bit 399 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 400 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 401 402 // Little-endian 64-bit 403 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 404 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 405 406 // Big-endian 64-bit 407 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 408 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 409 410 return readobj_error::unsupported_obj_file_format; 411 } 412 413 } // namespace llvm 414 415 // Iterate through the versions needed section, and place each Elf_Vernaux 416 // in the VersionMap according to its index. 417 template <class ELFT> 418 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 419 unsigned vn_size = sec->sh_size; // Size of section in bytes 420 unsigned vn_count = sec->sh_info; // Number of Verneed entries 421 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 422 const char *sec_end = sec_start + vn_size; 423 // The first Verneed entry is at the start of the section. 424 const char *p = sec_start; 425 for (unsigned i = 0; i < vn_count; i++) { 426 if (p + sizeof(Elf_Verneed) > sec_end) 427 report_fatal_error("Section ended unexpectedly while scanning " 428 "version needed records."); 429 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 430 if (vn->vn_version != ELF::VER_NEED_CURRENT) 431 report_fatal_error("Unexpected verneed version"); 432 // Iterate through the Vernaux entries 433 const char *paux = p + vn->vn_aux; 434 for (unsigned j = 0; j < vn->vn_cnt; j++) { 435 if (paux + sizeof(Elf_Vernaux) > sec_end) 436 report_fatal_error("Section ended unexpected while scanning auxiliary " 437 "version needed records."); 438 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 439 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 440 if (index >= VersionMap.size()) 441 VersionMap.resize(index + 1); 442 VersionMap[index] = VersionMapEntry(vna); 443 paux += vna->vna_next; 444 } 445 p += vn->vn_next; 446 } 447 } 448 449 // Iterate through the version definitions, and place each Elf_Verdef 450 // in the VersionMap according to its index. 451 template <class ELFT> 452 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 453 unsigned vd_size = sec->sh_size; // Size of section in bytes 454 unsigned vd_count = sec->sh_info; // Number of Verdef entries 455 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 456 const char *sec_end = sec_start + vd_size; 457 // The first Verdef entry is at the start of the section. 458 const char *p = sec_start; 459 for (unsigned i = 0; i < vd_count; i++) { 460 if (p + sizeof(Elf_Verdef) > sec_end) 461 report_fatal_error("Section ended unexpectedly while scanning " 462 "version definitions."); 463 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 464 if (vd->vd_version != ELF::VER_DEF_CURRENT) 465 report_fatal_error("Unexpected verdef version"); 466 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 467 if (index >= VersionMap.size()) 468 VersionMap.resize(index + 1); 469 VersionMap[index] = VersionMapEntry(vd); 470 p += vd->vd_next; 471 } 472 } 473 474 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 475 // If there is no dynamic symtab or version table, there is nothing to do. 476 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 477 return; 478 479 // Has the VersionMap already been loaded? 480 if (VersionMap.size() > 0) 481 return; 482 483 // The first two version indexes are reserved. 484 // Index 0 is LOCAL, index 1 is GLOBAL. 485 VersionMap.push_back(VersionMapEntry()); 486 VersionMap.push_back(VersionMapEntry()); 487 488 if (dot_gnu_version_d_sec) 489 LoadVersionDefs(dot_gnu_version_d_sec); 490 491 if (dot_gnu_version_r_sec) 492 LoadVersionNeeds(dot_gnu_version_r_sec); 493 } 494 495 template <typename ELFO, class ELFT> 496 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 497 const typename ELFO::Elf_Shdr *Sec, 498 ScopedPrinter &W) { 499 DictScope SS(W, "Version symbols"); 500 if (!Sec) 501 return; 502 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 503 W.printNumber("Section Name", Name, Sec->sh_name); 504 W.printHex("Address", Sec->sh_addr); 505 W.printHex("Offset", Sec->sh_offset); 506 W.printNumber("Link", Sec->sh_link); 507 508 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 509 StringRef StrTable = Dumper->getDynamicStringTable(); 510 511 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 512 ListScope Syms(W, "Symbols"); 513 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 514 DictScope S(W, "Symbol"); 515 std::string FullSymbolName = 516 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 517 W.printNumber("Version", *P); 518 W.printString("Name", FullSymbolName); 519 P += sizeof(typename ELFO::Elf_Half); 520 } 521 } 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 DictScope SD(W, "Version definition"); 529 if (!Sec) 530 return; 531 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 532 W.printNumber("Section Name", Name, Sec->sh_name); 533 W.printHex("Address", Sec->sh_addr); 534 W.printHex("Offset", Sec->sh_offset); 535 W.printNumber("Link", Sec->sh_link); 536 537 unsigned verdef_entries = 0; 538 // The number of entries in the section SHT_GNU_verdef 539 // is determined by DT_VERDEFNUM tag. 540 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 541 if (Dyn.d_tag == DT_VERDEFNUM) 542 verdef_entries = Dyn.d_un.d_val; 543 } 544 const uint8_t *SecStartAddress = 545 (const uint8_t *)Obj->base() + Sec->sh_offset; 546 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 547 const uint8_t *P = SecStartAddress; 548 const typename ELFO::Elf_Shdr *StrTab = 549 unwrapOrError(Obj->getSection(Sec->sh_link)); 550 551 ListScope Entries(W, "Entries"); 552 for (unsigned i = 0; i < verdef_entries; ++i) { 553 if (P + sizeof(typename ELFO::Elf_Verdef) > SecEndAddress) 554 report_fatal_error("invalid offset in the section"); 555 auto *VD = reinterpret_cast<const typename ELFO::Elf_Verdef *>(P); 556 DictScope Entry(W, "Entry"); 557 W.printHex("Offset", (uintptr_t)P - (uintptr_t)SecStartAddress); 558 W.printNumber("Rev", VD->vd_version); 559 // FIXME: print something more readable. 560 W.printNumber("Flags", VD->vd_flags); 561 W.printNumber("Index", VD->vd_ndx); 562 W.printNumber("Cnt", VD->vd_cnt); 563 W.printNumber("Hash", VD->vd_hash); 564 W.printString("Name", 565 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 566 VD->getAux()->vda_name))); 567 P += VD->vd_next; 568 } 569 } 570 571 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 572 // Dump version symbol section. 573 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 574 575 // Dump version definition section. 576 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 577 } 578 579 template <typename ELFT> 580 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 581 const Elf_Sym *symb, 582 bool &IsDefault) const { 583 // This is a dynamic symbol. Look in the GNU symbol version table. 584 if (!dot_gnu_version_sec) { 585 // No version table. 586 IsDefault = false; 587 return StringRef(""); 588 } 589 590 // Determine the position in the symbol table of this entry. 591 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 592 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 593 sizeof(Elf_Sym); 594 595 // Get the corresponding version index entry 596 const Elf_Versym *vs = 597 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index); 598 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 599 600 // Special markers for unversioned symbols. 601 if (version_index == ELF::VER_NDX_LOCAL || 602 version_index == ELF::VER_NDX_GLOBAL) { 603 IsDefault = false; 604 return StringRef(""); 605 } 606 607 // Lookup this symbol in the version table 608 LoadVersionMap(); 609 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 610 reportError("Invalid version entry"); 611 const VersionMapEntry &entry = VersionMap[version_index]; 612 613 // Get the version name string 614 size_t name_offset; 615 if (entry.isVerdef()) { 616 // The first Verdaux entry holds the name. 617 name_offset = entry.getVerdef()->getAux()->vda_name; 618 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 619 } else { 620 name_offset = entry.getVernaux()->vna_name; 621 IsDefault = false; 622 } 623 if (name_offset >= StrTab.size()) 624 reportError("Invalid string offset"); 625 return StringRef(StrTab.data() + name_offset); 626 } 627 628 template <typename ELFT> 629 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 630 StringRef StrTable, 631 bool IsDynamic) const { 632 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 633 if (!IsDynamic) 634 return SymbolName; 635 636 std::string FullSymbolName(SymbolName); 637 638 bool IsDefault; 639 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 640 FullSymbolName += (IsDefault ? "@@" : "@"); 641 FullSymbolName += Version; 642 return FullSymbolName; 643 } 644 645 template <typename ELFO> 646 static void 647 getSectionNameIndex(const ELFO &Obj, const typename ELFO::Elf_Sym *Symbol, 648 const typename ELFO::Elf_Sym *FirstSym, 649 ArrayRef<typename ELFO::Elf_Word> ShndxTable, 650 StringRef &SectionName, unsigned &SectionIndex) { 651 SectionIndex = Symbol->st_shndx; 652 if (Symbol->isUndefined()) 653 SectionName = "Undefined"; 654 else if (Symbol->isProcessorSpecific()) 655 SectionName = "Processor Specific"; 656 else if (Symbol->isOSSpecific()) 657 SectionName = "Operating System Specific"; 658 else if (Symbol->isAbsolute()) 659 SectionName = "Absolute"; 660 else if (Symbol->isCommon()) 661 SectionName = "Common"; 662 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 663 SectionName = "Reserved"; 664 else { 665 if (SectionIndex == SHN_XINDEX) 666 SectionIndex = 667 Obj.getExtendedSymbolTableIndex(Symbol, FirstSym, ShndxTable); 668 const typename ELFO::Elf_Shdr *Sec = 669 unwrapOrError(Obj.getSection(SectionIndex)); 670 SectionName = unwrapOrError(Obj.getSectionName(Sec)); 671 } 672 } 673 674 template <class ELFO> 675 static const typename ELFO::Elf_Shdr * 676 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 677 for (const auto &Shdr : Obj->sections()) 678 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 679 return &Shdr; 680 return nullptr; 681 } 682 683 template <class ELFO> 684 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 685 StringRef Name) { 686 for (const auto &Shdr : Obj.sections()) { 687 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 688 return &Shdr; 689 } 690 return nullptr; 691 } 692 693 static const EnumEntry<unsigned> ElfClass[] = { 694 {"None", "none", ELF::ELFCLASSNONE}, 695 {"32-bit", "ELF32", ELF::ELFCLASS32}, 696 {"64-bit", "ELF64", ELF::ELFCLASS64}, 697 }; 698 699 static const EnumEntry<unsigned> ElfDataEncoding[] = { 700 {"None", "none", ELF::ELFDATANONE}, 701 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 702 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 703 }; 704 705 static const EnumEntry<unsigned> ElfObjectFileType[] = { 706 {"None", "NONE (none)", ELF::ET_NONE}, 707 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 708 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 709 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 710 {"Core", "CORE (Core file)", ELF::ET_CORE}, 711 }; 712 713 static const EnumEntry<unsigned> ElfOSABI[] = { 714 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 715 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 716 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 717 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 718 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 719 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 720 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 721 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 722 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 723 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 724 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 725 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 726 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 727 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 728 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 729 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 730 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 731 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 732 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX}, 733 {"ARM", "ARM", ELF::ELFOSABI_ARM}, 734 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 735 }; 736 737 static const EnumEntry<unsigned> ElfMachineType[] = { 738 ENUM_ENT(EM_NONE, "None"), 739 ENUM_ENT(EM_M32, "WE32100"), 740 ENUM_ENT(EM_SPARC, "Sparc"), 741 ENUM_ENT(EM_386, "Intel 80386"), 742 ENUM_ENT(EM_68K, "MC68000"), 743 ENUM_ENT(EM_88K, "MC88000"), 744 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 745 ENUM_ENT(EM_860, "Intel 80860"), 746 ENUM_ENT(EM_MIPS, "MIPS R3000"), 747 ENUM_ENT(EM_S370, "IBM System/370"), 748 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 749 ENUM_ENT(EM_PARISC, "HPPA"), 750 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 751 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 752 ENUM_ENT(EM_960, "Intel 80960"), 753 ENUM_ENT(EM_PPC, "PowerPC"), 754 ENUM_ENT(EM_PPC64, "PowerPC64"), 755 ENUM_ENT(EM_S390, "IBM S/390"), 756 ENUM_ENT(EM_SPU, "SPU"), 757 ENUM_ENT(EM_V800, "NEC V800 series"), 758 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 759 ENUM_ENT(EM_RH32, "TRW RH-32"), 760 ENUM_ENT(EM_RCE, "Motorola RCE"), 761 ENUM_ENT(EM_ARM, "ARM"), 762 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 763 ENUM_ENT(EM_SH, "Hitachi SH"), 764 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 765 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 766 ENUM_ENT(EM_ARC, "ARC"), 767 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 768 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 769 ENUM_ENT(EM_H8S, "Hitachi H8S"), 770 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 771 ENUM_ENT(EM_IA_64, "Intel IA-64"), 772 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 773 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 774 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 775 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 776 ENUM_ENT(EM_PCP, "Siemens PCP"), 777 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 778 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 779 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 780 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 781 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 782 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 783 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 784 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 785 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 786 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 787 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 788 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 789 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 790 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 791 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 792 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 793 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 794 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 795 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 796 ENUM_ENT(EM_VAX, "Digital VAX"), 797 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 798 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 799 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 800 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 801 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 802 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 803 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 804 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 805 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 806 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 807 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 808 ENUM_ENT(EM_V850, "NEC v850"), 809 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 810 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 811 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 812 ENUM_ENT(EM_PJ, "picoJava"), 813 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 814 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 815 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 816 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 817 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 818 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 819 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 820 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 821 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 822 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 823 ENUM_ENT(EM_MAX, "MAX Processor"), 824 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 825 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 826 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 827 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 828 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 829 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 830 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 831 ENUM_ENT(EM_UNICORE, "Unicore"), 832 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 833 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 834 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 835 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 836 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 837 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 838 ENUM_ENT(EM_M16C, "Renesas M16C"), 839 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 840 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 841 ENUM_ENT(EM_M32C, "Renesas M32C"), 842 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 843 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 844 ENUM_ENT(EM_SHARC, "EM_SHARC"), 845 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 846 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 847 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 848 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 849 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 850 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 851 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 852 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 853 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 854 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 855 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 856 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 857 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 858 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 859 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 860 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 861 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 862 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 863 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 864 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 865 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 866 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 867 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 868 ENUM_ENT(EM_RX, "Renesas RX"), 869 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 870 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 871 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 872 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 873 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 874 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 875 ENUM_ENT(EM_L10M, "EM_L10M"), 876 ENUM_ENT(EM_K10M, "EM_K10M"), 877 ENUM_ENT(EM_AARCH64, "AArch64"), 878 ENUM_ENT(EM_AVR32, "Atmel AVR 8-bit microcontroller"), 879 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 880 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 881 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 882 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 883 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 884 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 885 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 886 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 887 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 888 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 889 ENUM_ENT(EM_RL78, "Renesas RL78"), 890 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 891 ENUM_ENT(EM_78KOR, "EM_78KOR"), 892 ENUM_ENT(EM_56800EX, "EM_56800EX"), 893 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 894 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 895 ENUM_ENT(EM_LANAI, "EM_LANAI"), 896 }; 897 898 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 899 {"Local", "LOCAL", ELF::STB_LOCAL}, 900 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 901 {"Weak", "WEAK", ELF::STB_WEAK}, 902 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 903 904 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 905 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 906 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 907 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 908 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 909 910 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 911 {"None", "NOTYPE", ELF::STT_NOTYPE}, 912 {"Object", "OBJECT", ELF::STT_OBJECT}, 913 {"Function", "FUNC", ELF::STT_FUNC}, 914 {"Section", "SECTION", ELF::STT_SECTION}, 915 {"File", "FILE", ELF::STT_FILE}, 916 {"Common", "COMMON", ELF::STT_COMMON}, 917 {"TLS", "TLS", ELF::STT_TLS}, 918 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 919 920 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 921 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL }, 922 { "AMDGPU_HSA_INDIRECT_FUNCTION", ELF::STT_AMDGPU_HSA_INDIRECT_FUNCTION }, 923 { "AMDGPU_HSA_METADATA", ELF::STT_AMDGPU_HSA_METADATA } 924 }; 925 926 static const char *getElfSectionType(unsigned Arch, unsigned Type) { 927 switch (Arch) { 928 case ELF::EM_ARM: 929 switch (Type) { 930 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX); 931 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP); 932 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES); 933 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY); 934 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION); 935 } 936 case ELF::EM_HEXAGON: 937 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); } 938 case ELF::EM_X86_64: 939 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); } 940 case ELF::EM_MIPS: 941 case ELF::EM_MIPS_RS3_LE: 942 switch (Type) { 943 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO); 944 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS); 945 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS); 946 } 947 } 948 949 switch (Type) { 950 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL ); 951 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS ); 952 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB ); 953 LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB ); 954 LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA ); 955 LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH ); 956 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC ); 957 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE ); 958 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS ); 959 LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL ); 960 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB ); 961 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM ); 962 LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY ); 963 LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY ); 964 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY ); 965 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP ); 966 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX ); 967 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES ); 968 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH ); 969 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef ); 970 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed ); 971 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym ); 972 default: return ""; 973 } 974 } 975 976 static const char *getGroupType(uint32_t Flag) { 977 if (Flag & ELF::GRP_COMDAT) 978 return "COMDAT"; 979 else 980 return "(unknown)"; 981 } 982 983 static const EnumEntry<unsigned> ElfSectionFlags[] = { 984 ENUM_ENT(SHF_WRITE, "W"), 985 ENUM_ENT(SHF_ALLOC, "A"), 986 ENUM_ENT(SHF_EXCLUDE, "E"), 987 ENUM_ENT(SHF_EXECINSTR, "X"), 988 ENUM_ENT(SHF_MERGE, "M"), 989 ENUM_ENT(SHF_STRINGS, "S"), 990 ENUM_ENT(SHF_INFO_LINK, "I"), 991 ENUM_ENT(SHF_LINK_ORDER, "L"), 992 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 993 ENUM_ENT(SHF_GROUP, "G"), 994 ENUM_ENT(SHF_TLS, "T"), 995 ENUM_ENT(SHF_MASKOS, "o"), 996 ENUM_ENT(SHF_MASKPROC, "p"), 997 ENUM_ENT_1(SHF_COMPRESSED), 998 }; 999 1000 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1001 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1002 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1003 }; 1004 1005 static const EnumEntry<unsigned> ElfAMDGPUSectionFlags[] = { 1006 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_GLOBAL), 1007 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_READONLY), 1008 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_CODE), 1009 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_AGENT) 1010 }; 1011 1012 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1013 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1014 }; 1015 1016 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1017 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1018 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1019 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1020 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1021 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1022 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1023 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1024 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1025 }; 1026 1027 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1028 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1029 }; 1030 1031 static std::string getGNUFlags(uint64_t Flags) { 1032 std::string Str; 1033 for (auto Entry : ElfSectionFlags) { 1034 uint64_t Flag = Entry.Value & Flags; 1035 Flags &= ~Entry.Value; 1036 switch (Flag) { 1037 case ELF::SHF_WRITE: 1038 case ELF::SHF_ALLOC: 1039 case ELF::SHF_EXECINSTR: 1040 case ELF::SHF_MERGE: 1041 case ELF::SHF_STRINGS: 1042 case ELF::SHF_INFO_LINK: 1043 case ELF::SHF_LINK_ORDER: 1044 case ELF::SHF_OS_NONCONFORMING: 1045 case ELF::SHF_GROUP: 1046 case ELF::SHF_TLS: 1047 case ELF::SHF_EXCLUDE: 1048 Str += Entry.AltName; 1049 break; 1050 default: 1051 if (Flag & ELF::SHF_MASKOS) 1052 Str += "o"; 1053 else if (Flag & ELF::SHF_MASKPROC) 1054 Str += "p"; 1055 else if (Flag) 1056 Str += "x"; 1057 } 1058 } 1059 return Str; 1060 } 1061 1062 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1063 // Check potentially overlapped processor-specific 1064 // program header type. 1065 switch (Arch) { 1066 case ELF::EM_AMDGPU: 1067 switch (Type) { 1068 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1069 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1070 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1071 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1072 } 1073 case ELF::EM_ARM: 1074 switch (Type) { 1075 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1076 } 1077 case ELF::EM_MIPS: 1078 case ELF::EM_MIPS_RS3_LE: 1079 switch (Type) { 1080 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1081 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1082 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1083 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1084 } 1085 } 1086 1087 switch (Type) { 1088 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1089 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1090 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1091 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1092 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1093 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1094 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1095 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1096 1097 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1098 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1099 1100 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1101 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1102 default: return ""; 1103 } 1104 } 1105 1106 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1107 switch (Type) { 1108 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1109 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1110 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1111 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1112 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1113 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1114 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1115 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1116 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1117 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1118 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1119 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1120 default: 1121 // All machine specific PT_* types 1122 switch (Arch) { 1123 case ELF::EM_AMDGPU: 1124 switch (Type) { 1125 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1126 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1127 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1128 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1129 } 1130 return ""; 1131 case ELF::EM_ARM: 1132 if (Type == ELF::PT_ARM_EXIDX) 1133 return "EXIDX"; 1134 return ""; 1135 case ELF::EM_MIPS: 1136 case ELF::EM_MIPS_RS3_LE: 1137 switch (Type) { 1138 case PT_MIPS_REGINFO: 1139 return "REGINFO"; 1140 case PT_MIPS_RTPROC: 1141 return "RTPROC"; 1142 case PT_MIPS_OPTIONS: 1143 return "OPTIONS"; 1144 case PT_MIPS_ABIFLAGS: 1145 return "ABIFLAGS"; 1146 } 1147 return ""; 1148 } 1149 } 1150 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1151 } 1152 1153 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1154 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1155 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1156 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1157 }; 1158 1159 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1160 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1161 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1162 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1163 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1164 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1165 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1166 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1167 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1168 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1169 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1170 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1171 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1172 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1173 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1174 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1175 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1176 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1177 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1178 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1179 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1180 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1181 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1182 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1183 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1184 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1185 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1186 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1187 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1188 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1189 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1190 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1191 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1192 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1193 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1194 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1195 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1196 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1197 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1198 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1199 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1200 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1201 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1202 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1203 }; 1204 1205 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1206 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1207 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1208 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1209 }; 1210 1211 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1212 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1213 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1214 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1215 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1216 }; 1217 1218 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1219 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1220 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1221 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1222 }; 1223 1224 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1225 switch (Odk) { 1226 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1227 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1228 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1229 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1230 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1231 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1232 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1233 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1234 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1235 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1236 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1237 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1238 default: 1239 return "Unknown"; 1240 } 1241 } 1242 1243 template <typename ELFT> 1244 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1245 : ObjDumper(Writer), Obj(Obj) { 1246 1247 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1248 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 1249 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1250 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1251 continue; 1252 } 1253 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1254 continue; 1255 LoadSegments.push_back(&Phdr); 1256 } 1257 1258 for (const Elf_Shdr &Sec : Obj->sections()) { 1259 switch (Sec.sh_type) { 1260 case ELF::SHT_SYMTAB: 1261 if (DotSymtabSec != nullptr) 1262 reportError("Multilpe SHT_SYMTAB"); 1263 DotSymtabSec = &Sec; 1264 break; 1265 case ELF::SHT_DYNSYM: 1266 if (DynSymRegion.Size) 1267 reportError("Multilpe SHT_DYNSYM"); 1268 DynSymRegion = createDRIFrom(&Sec); 1269 // This is only used (if Elf_Shdr present)for naming section in GNU style 1270 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1271 break; 1272 case ELF::SHT_SYMTAB_SHNDX: 1273 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1274 break; 1275 case ELF::SHT_GNU_versym: 1276 if (dot_gnu_version_sec != nullptr) 1277 reportError("Multiple SHT_GNU_versym"); 1278 dot_gnu_version_sec = &Sec; 1279 break; 1280 case ELF::SHT_GNU_verdef: 1281 if (dot_gnu_version_d_sec != nullptr) 1282 reportError("Multiple SHT_GNU_verdef"); 1283 dot_gnu_version_d_sec = &Sec; 1284 break; 1285 case ELF::SHT_GNU_verneed: 1286 if (dot_gnu_version_r_sec != nullptr) 1287 reportError("Multilpe SHT_GNU_verneed"); 1288 dot_gnu_version_r_sec = &Sec; 1289 break; 1290 } 1291 } 1292 1293 parseDynamicTable(LoadSegments); 1294 1295 if (opts::Output == opts::GNU) 1296 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1297 else 1298 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1299 } 1300 1301 template <typename ELFT> 1302 void ELFDumper<ELFT>::parseDynamicTable( 1303 ArrayRef<const Elf_Phdr *> LoadSegments) { 1304 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1305 const Elf_Phdr *const *I = std::upper_bound( 1306 LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>); 1307 if (I == LoadSegments.begin()) 1308 report_fatal_error("Virtual address is not in any segment"); 1309 --I; 1310 const Elf_Phdr &Phdr = **I; 1311 uint64_t Delta = VAddr - Phdr.p_vaddr; 1312 if (Delta >= Phdr.p_filesz) 1313 report_fatal_error("Virtual address is not in any segment"); 1314 return Obj->base() + Phdr.p_offset + Delta; 1315 }; 1316 1317 uint64_t SONameOffset = 0; 1318 const char *StringTableBegin = nullptr; 1319 uint64_t StringTableSize = 0; 1320 for (const Elf_Dyn &Dyn : dynamic_table()) { 1321 switch (Dyn.d_tag) { 1322 case ELF::DT_HASH: 1323 HashTable = 1324 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1325 break; 1326 case ELF::DT_GNU_HASH: 1327 GnuHashTable = 1328 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1329 break; 1330 case ELF::DT_STRTAB: 1331 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1332 break; 1333 case ELF::DT_STRSZ: 1334 StringTableSize = Dyn.getVal(); 1335 break; 1336 case ELF::DT_SYMTAB: 1337 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1338 DynSymRegion.EntSize = sizeof(Elf_Sym); 1339 break; 1340 case ELF::DT_RELA: 1341 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1342 break; 1343 case ELF::DT_RELASZ: 1344 DynRelaRegion.Size = Dyn.getVal(); 1345 break; 1346 case ELF::DT_RELAENT: 1347 DynRelaRegion.EntSize = Dyn.getVal(); 1348 break; 1349 case ELF::DT_SONAME: 1350 SONameOffset = Dyn.getVal(); 1351 break; 1352 case ELF::DT_REL: 1353 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1354 break; 1355 case ELF::DT_RELSZ: 1356 DynRelRegion.Size = Dyn.getVal(); 1357 break; 1358 case ELF::DT_RELENT: 1359 DynRelRegion.EntSize = Dyn.getVal(); 1360 break; 1361 case ELF::DT_PLTREL: 1362 if (Dyn.getVal() == DT_REL) 1363 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1364 else if (Dyn.getVal() == DT_RELA) 1365 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1366 else 1367 reportError(Twine("unknown DT_PLTREL value of ") + 1368 Twine((uint64_t)Dyn.getVal())); 1369 break; 1370 case ELF::DT_JMPREL: 1371 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1372 break; 1373 case ELF::DT_PLTRELSZ: 1374 DynPLTRelRegion.Size = Dyn.getVal(); 1375 break; 1376 } 1377 } 1378 if (StringTableBegin) 1379 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1380 if (SONameOffset) 1381 SOName = getDynamicString(SONameOffset); 1382 } 1383 1384 template <typename ELFT> 1385 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1386 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1387 } 1388 1389 template <typename ELFT> 1390 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1391 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1392 } 1393 1394 template<class ELFT> 1395 void ELFDumper<ELFT>::printFileHeaders() { 1396 ELFDumperStyle->printFileHeaders(Obj); 1397 } 1398 1399 template<class ELFT> 1400 void ELFDumper<ELFT>::printSections() { 1401 ELFDumperStyle->printSections(Obj); 1402 } 1403 1404 template<class ELFT> 1405 void ELFDumper<ELFT>::printRelocations() { 1406 ELFDumperStyle->printRelocations(Obj); 1407 } 1408 1409 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1410 ELFDumperStyle->printProgramHeaders(Obj); 1411 } 1412 1413 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1414 ELFDumperStyle->printDynamicRelocations(Obj); 1415 } 1416 1417 template<class ELFT> 1418 void ELFDumper<ELFT>::printSymbols() { 1419 ELFDumperStyle->printSymbols(Obj); 1420 } 1421 1422 template<class ELFT> 1423 void ELFDumper<ELFT>::printDynamicSymbols() { 1424 ELFDumperStyle->printDynamicSymbols(Obj); 1425 } 1426 1427 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1428 ELFDumperStyle->printHashHistogram(Obj); 1429 } 1430 #define LLVM_READOBJ_TYPE_CASE(name) \ 1431 case DT_##name: return #name 1432 1433 static const char *getTypeString(uint64_t Type) { 1434 switch (Type) { 1435 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1436 LLVM_READOBJ_TYPE_CASE(DEBUG); 1437 LLVM_READOBJ_TYPE_CASE(FINI); 1438 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1439 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1440 LLVM_READOBJ_TYPE_CASE(FLAGS); 1441 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1442 LLVM_READOBJ_TYPE_CASE(HASH); 1443 LLVM_READOBJ_TYPE_CASE(INIT); 1444 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1445 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1446 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1447 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1448 LLVM_READOBJ_TYPE_CASE(JMPREL); 1449 LLVM_READOBJ_TYPE_CASE(NEEDED); 1450 LLVM_READOBJ_TYPE_CASE(NULL); 1451 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1452 LLVM_READOBJ_TYPE_CASE(PLTREL); 1453 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1454 LLVM_READOBJ_TYPE_CASE(REL); 1455 LLVM_READOBJ_TYPE_CASE(RELA); 1456 LLVM_READOBJ_TYPE_CASE(RELENT); 1457 LLVM_READOBJ_TYPE_CASE(RELSZ); 1458 LLVM_READOBJ_TYPE_CASE(RELAENT); 1459 LLVM_READOBJ_TYPE_CASE(RELASZ); 1460 LLVM_READOBJ_TYPE_CASE(RPATH); 1461 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1462 LLVM_READOBJ_TYPE_CASE(SONAME); 1463 LLVM_READOBJ_TYPE_CASE(STRSZ); 1464 LLVM_READOBJ_TYPE_CASE(STRTAB); 1465 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1466 LLVM_READOBJ_TYPE_CASE(SYMENT); 1467 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1468 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1469 LLVM_READOBJ_TYPE_CASE(VERDEF); 1470 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1471 LLVM_READOBJ_TYPE_CASE(VERNEED); 1472 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1473 LLVM_READOBJ_TYPE_CASE(VERSYM); 1474 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1475 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1476 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1477 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1478 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1479 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1480 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1481 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1482 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1483 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1484 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1485 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1486 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1487 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1488 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1489 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1490 default: return "unknown"; 1491 } 1492 } 1493 1494 #undef LLVM_READOBJ_TYPE_CASE 1495 1496 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1497 { #enum, prefix##_##enum } 1498 1499 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1500 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1501 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1502 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1503 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1504 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1505 }; 1506 1507 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1508 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1509 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1510 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1511 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1512 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1513 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1514 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1515 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1516 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1517 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1518 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1519 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1520 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1521 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1522 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1523 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1524 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1525 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1526 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1527 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1528 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1529 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1530 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1531 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1532 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1533 }; 1534 1535 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1536 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1537 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1538 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1539 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1540 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1541 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1542 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1543 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1544 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1545 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1546 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1547 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1548 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1549 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1550 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1551 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1552 }; 1553 1554 #undef LLVM_READOBJ_DT_FLAG_ENT 1555 1556 template <typename T, typename TFlag> 1557 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1558 typedef EnumEntry<TFlag> FlagEntry; 1559 typedef SmallVector<FlagEntry, 10> FlagVector; 1560 FlagVector SetFlags; 1561 1562 for (const auto &Flag : Flags) { 1563 if (Flag.Value == 0) 1564 continue; 1565 1566 if ((Value & Flag.Value) == Flag.Value) 1567 SetFlags.push_back(Flag); 1568 } 1569 1570 for (const auto &Flag : SetFlags) { 1571 OS << Flag.Name << " "; 1572 } 1573 } 1574 1575 template <class ELFT> 1576 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1577 if (Value >= DynamicStringTable.size()) 1578 reportError("Invalid dynamic string table reference"); 1579 return StringRef(DynamicStringTable.data() + Value); 1580 } 1581 1582 template <class ELFT> 1583 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1584 raw_ostream &OS = W.getOStream(); 1585 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1586 switch (Type) { 1587 case DT_PLTREL: 1588 if (Value == DT_REL) { 1589 OS << "REL"; 1590 break; 1591 } else if (Value == DT_RELA) { 1592 OS << "RELA"; 1593 break; 1594 } 1595 // Fallthrough. 1596 case DT_PLTGOT: 1597 case DT_HASH: 1598 case DT_STRTAB: 1599 case DT_SYMTAB: 1600 case DT_RELA: 1601 case DT_INIT: 1602 case DT_FINI: 1603 case DT_REL: 1604 case DT_JMPREL: 1605 case DT_INIT_ARRAY: 1606 case DT_FINI_ARRAY: 1607 case DT_PREINIT_ARRAY: 1608 case DT_DEBUG: 1609 case DT_VERDEF: 1610 case DT_VERNEED: 1611 case DT_VERSYM: 1612 case DT_GNU_HASH: 1613 case DT_NULL: 1614 case DT_MIPS_BASE_ADDRESS: 1615 case DT_MIPS_GOTSYM: 1616 case DT_MIPS_RLD_MAP: 1617 case DT_MIPS_RLD_MAP_REL: 1618 case DT_MIPS_PLTGOT: 1619 case DT_MIPS_OPTIONS: 1620 OS << format(ConvChar, Value); 1621 break; 1622 case DT_RELACOUNT: 1623 case DT_RELCOUNT: 1624 case DT_VERDEFNUM: 1625 case DT_VERNEEDNUM: 1626 case DT_MIPS_RLD_VERSION: 1627 case DT_MIPS_LOCAL_GOTNO: 1628 case DT_MIPS_SYMTABNO: 1629 case DT_MIPS_UNREFEXTNO: 1630 OS << Value; 1631 break; 1632 case DT_PLTRELSZ: 1633 case DT_RELASZ: 1634 case DT_RELAENT: 1635 case DT_STRSZ: 1636 case DT_SYMENT: 1637 case DT_RELSZ: 1638 case DT_RELENT: 1639 case DT_INIT_ARRAYSZ: 1640 case DT_FINI_ARRAYSZ: 1641 case DT_PREINIT_ARRAYSZ: 1642 OS << Value << " (bytes)"; 1643 break; 1644 case DT_NEEDED: 1645 OS << "SharedLibrary (" << getDynamicString(Value) << ")"; 1646 break; 1647 case DT_SONAME: 1648 OS << "LibrarySoname (" << getDynamicString(Value) << ")"; 1649 break; 1650 case DT_RPATH: 1651 case DT_RUNPATH: 1652 OS << getDynamicString(Value); 1653 break; 1654 case DT_MIPS_FLAGS: 1655 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1656 break; 1657 case DT_FLAGS: 1658 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1659 break; 1660 case DT_FLAGS_1: 1661 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1662 break; 1663 default: 1664 OS << format(ConvChar, Value); 1665 break; 1666 } 1667 } 1668 1669 template<class ELFT> 1670 void ELFDumper<ELFT>::printUnwindInfo() { 1671 W.startLine() << "UnwindInfo not implemented.\n"; 1672 } 1673 1674 namespace { 1675 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1676 const unsigned Machine = Obj->getHeader()->e_machine; 1677 if (Machine == EM_ARM) { 1678 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1679 W, Obj, DotSymtabSec); 1680 return Ctx.PrintUnwindInformation(); 1681 } 1682 W.startLine() << "UnwindInfo not implemented.\n"; 1683 } 1684 } 1685 1686 template<class ELFT> 1687 void ELFDumper<ELFT>::printDynamicTable() { 1688 auto I = dynamic_table().begin(); 1689 auto E = dynamic_table().end(); 1690 1691 if (I == E) 1692 return; 1693 1694 --E; 1695 while (I != E && E->getTag() == ELF::DT_NULL) 1696 --E; 1697 if (E->getTag() != ELF::DT_NULL) 1698 ++E; 1699 ++E; 1700 1701 ptrdiff_t Total = std::distance(I, E); 1702 if (Total == 0) 1703 return; 1704 1705 raw_ostream &OS = W.getOStream(); 1706 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1707 1708 bool Is64 = ELFT::Is64Bits; 1709 1710 W.startLine() 1711 << " Tag" << (Is64 ? " " : " ") << "Type" 1712 << " " << "Name/Value\n"; 1713 while (I != E) { 1714 const Elf_Dyn &Entry = *I; 1715 uintX_t Tag = Entry.getTag(); 1716 ++I; 1717 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1718 << format("%-21s", getTypeString(Tag)); 1719 printValue(Tag, Entry.getVal()); 1720 OS << "\n"; 1721 } 1722 1723 W.startLine() << "]\n"; 1724 } 1725 1726 template<class ELFT> 1727 void ELFDumper<ELFT>::printNeededLibraries() { 1728 ListScope D(W, "NeededLibraries"); 1729 1730 typedef std::vector<StringRef> LibsTy; 1731 LibsTy Libs; 1732 1733 for (const auto &Entry : dynamic_table()) 1734 if (Entry.d_tag == ELF::DT_NEEDED) 1735 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1736 1737 std::stable_sort(Libs.begin(), Libs.end()); 1738 1739 for (const auto &L : Libs) { 1740 outs() << " " << L << "\n"; 1741 } 1742 } 1743 1744 1745 template <typename ELFT> 1746 void ELFDumper<ELFT>::printHashTable() { 1747 DictScope D(W, "HashTable"); 1748 if (!HashTable) 1749 return; 1750 W.printNumber("Num Buckets", HashTable->nbucket); 1751 W.printNumber("Num Chains", HashTable->nchain); 1752 W.printList("Buckets", HashTable->buckets()); 1753 W.printList("Chains", HashTable->chains()); 1754 } 1755 1756 template <typename ELFT> 1757 void ELFDumper<ELFT>::printGnuHashTable() { 1758 DictScope D(W, "GnuHashTable"); 1759 if (!GnuHashTable) 1760 return; 1761 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1762 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1763 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1764 W.printNumber("Shift Count", GnuHashTable->shift2); 1765 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1766 W.printList("Buckets", GnuHashTable->buckets()); 1767 Elf_Sym_Range Syms = dynamic_symbols(); 1768 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1769 if (!NumSyms) 1770 reportError("No dynamic symbol section"); 1771 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1772 } 1773 1774 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1775 outs() << "LoadName: " << SOName << '\n'; 1776 } 1777 1778 template <class ELFT> 1779 void ELFDumper<ELFT>::printAttributes() { 1780 W.startLine() << "Attributes not implemented.\n"; 1781 } 1782 1783 namespace { 1784 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1785 if (Obj->getHeader()->e_machine != EM_ARM) { 1786 W.startLine() << "Attributes not implemented.\n"; 1787 return; 1788 } 1789 1790 DictScope BA(W, "BuildAttributes"); 1791 for (const ELFO::Elf_Shdr &Sec : Obj->sections()) { 1792 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1793 continue; 1794 1795 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1796 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1797 errs() << "unrecognised FormatVersion: 0x" << utohexstr(Contents[0]) 1798 << '\n'; 1799 continue; 1800 } 1801 1802 W.printHex("FormatVersion", Contents[0]); 1803 if (Contents.size() == 1) 1804 continue; 1805 1806 ARMAttributeParser(W).Parse(Contents); 1807 } 1808 } 1809 } 1810 1811 namespace { 1812 template <class ELFT> class MipsGOTParser { 1813 public: 1814 typedef object::ELFFile<ELFT> ELFO; 1815 typedef typename ELFO::Elf_Shdr Elf_Shdr; 1816 typedef typename ELFO::Elf_Sym Elf_Sym; 1817 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 1818 typedef typename ELFO::Elf_Addr GOTEntry; 1819 typedef typename ELFO::Elf_Rel Elf_Rel; 1820 typedef typename ELFO::Elf_Rela Elf_Rela; 1821 1822 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1823 Elf_Dyn_Range DynTable, ScopedPrinter &W); 1824 1825 void parseGOT(); 1826 void parsePLT(); 1827 1828 private: 1829 ELFDumper<ELFT> *Dumper; 1830 const ELFO *Obj; 1831 ScopedPrinter &W; 1832 llvm::Optional<uint64_t> DtPltGot; 1833 llvm::Optional<uint64_t> DtLocalGotNum; 1834 llvm::Optional<uint64_t> DtGotSym; 1835 llvm::Optional<uint64_t> DtMipsPltGot; 1836 llvm::Optional<uint64_t> DtJmpRel; 1837 1838 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1839 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1840 1841 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1842 const GOTEntry *It); 1843 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1844 const GOTEntry *It, const Elf_Sym *Sym, 1845 StringRef StrTable, bool IsDynamic); 1846 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1847 const GOTEntry *It, StringRef Purpose); 1848 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1849 const GOTEntry *It, StringRef StrTable, 1850 const Elf_Sym *Sym); 1851 }; 1852 } 1853 1854 template <class ELFT> 1855 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1856 Elf_Dyn_Range DynTable, ScopedPrinter &W) 1857 : Dumper(Dumper), Obj(Obj), W(W) { 1858 for (const auto &Entry : DynTable) { 1859 switch (Entry.getTag()) { 1860 case ELF::DT_PLTGOT: 1861 DtPltGot = Entry.getVal(); 1862 break; 1863 case ELF::DT_MIPS_LOCAL_GOTNO: 1864 DtLocalGotNum = Entry.getVal(); 1865 break; 1866 case ELF::DT_MIPS_GOTSYM: 1867 DtGotSym = Entry.getVal(); 1868 break; 1869 case ELF::DT_MIPS_PLTGOT: 1870 DtMipsPltGot = Entry.getVal(); 1871 break; 1872 case ELF::DT_JMPREL: 1873 DtJmpRel = Entry.getVal(); 1874 break; 1875 } 1876 } 1877 } 1878 1879 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1880 // See "Global Offset Table" in Chapter 5 in the following document 1881 // for detailed GOT description. 1882 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1883 if (!DtPltGot) { 1884 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1885 return; 1886 } 1887 if (!DtLocalGotNum) { 1888 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1889 return; 1890 } 1891 if (!DtGotSym) { 1892 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1893 return; 1894 } 1895 1896 StringRef StrTable = Dumper->getDynamicStringTable(); 1897 const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin(); 1898 const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end(); 1899 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1900 1901 if (*DtGotSym > DynSymTotal) 1902 report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols"); 1903 1904 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1905 1906 if (*DtLocalGotNum + GlobalGotNum == 0) { 1907 W.startLine() << "GOT is empty.\n"; 1908 return; 1909 } 1910 1911 const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot); 1912 if (!GOTShdr) 1913 report_fatal_error("There is no not empty GOT section at 0x" + 1914 Twine::utohexstr(*DtPltGot)); 1915 1916 ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr)); 1917 1918 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT)) 1919 report_fatal_error("Number of GOT entries exceeds the size of GOT section"); 1920 1921 const GOTEntry *GotBegin = makeGOTIter(GOT, 0); 1922 const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum); 1923 const GOTEntry *It = GotBegin; 1924 1925 DictScope GS(W, "Primary GOT"); 1926 1927 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 1928 { 1929 ListScope RS(W, "Reserved entries"); 1930 1931 { 1932 DictScope D(W, "Entry"); 1933 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1934 W.printString("Purpose", StringRef("Lazy resolver")); 1935 } 1936 1937 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 1938 DictScope D(W, "Entry"); 1939 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1940 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 1941 } 1942 } 1943 { 1944 ListScope LS(W, "Local entries"); 1945 for (; It != GotLocalEnd; ++It) { 1946 DictScope D(W, "Entry"); 1947 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 1948 } 1949 } 1950 { 1951 ListScope GS(W, "Global entries"); 1952 1953 const GOTEntry *GotGlobalEnd = 1954 makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum); 1955 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 1956 for (; It != GotGlobalEnd; ++It) { 1957 DictScope D(W, "Entry"); 1958 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable, 1959 true); 1960 } 1961 } 1962 1963 std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum; 1964 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 1965 } 1966 1967 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 1968 if (!DtMipsPltGot) { 1969 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 1970 return; 1971 } 1972 if (!DtJmpRel) { 1973 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 1974 return; 1975 } 1976 1977 const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 1978 if (!PLTShdr) 1979 report_fatal_error("There is no not empty PLTGOT section at 0x " + 1980 Twine::utohexstr(*DtMipsPltGot)); 1981 ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr)); 1982 1983 const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel); 1984 if (!PLTRelShdr) 1985 report_fatal_error("There is no not empty RELPLT section at 0x" + 1986 Twine::utohexstr(*DtJmpRel)); 1987 const Elf_Shdr *SymTable = 1988 unwrapOrError(Obj->getSection(PLTRelShdr->sh_link)); 1989 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable)); 1990 1991 const GOTEntry *PLTBegin = makeGOTIter(PLT, 0); 1992 const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT)); 1993 const GOTEntry *It = PLTBegin; 1994 1995 DictScope GS(W, "PLT GOT"); 1996 { 1997 ListScope RS(W, "Reserved entries"); 1998 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 1999 if (It != PLTEnd) 2000 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 2001 } 2002 { 2003 ListScope GS(W, "Entries"); 2004 2005 switch (PLTRelShdr->sh_type) { 2006 case ELF::SHT_REL: 2007 for (const Elf_Rel *RI = Obj->rel_begin(PLTRelShdr), 2008 *RE = Obj->rel_end(PLTRelShdr); 2009 RI != RE && It != PLTEnd; ++RI, ++It) { 2010 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 2011 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2012 } 2013 break; 2014 case ELF::SHT_RELA: 2015 for (const Elf_Rela *RI = Obj->rela_begin(PLTRelShdr), 2016 *RE = Obj->rela_end(PLTRelShdr); 2017 RI != RE && It != PLTEnd; ++RI, ++It) { 2018 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 2019 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2020 } 2021 break; 2022 } 2023 } 2024 } 2025 2026 template <class ELFT> 2027 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 2028 return GOT.size() / sizeof(GOTEntry); 2029 } 2030 2031 template <class ELFT> 2032 const typename MipsGOTParser<ELFT>::GOTEntry * 2033 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 2034 const char *Data = reinterpret_cast<const char *>(GOT.data()); 2035 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 2036 } 2037 2038 template <class ELFT> 2039 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 2040 const GOTEntry *BeginIt, 2041 const GOTEntry *It) { 2042 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2043 W.printHex("Address", GotAddr + Offset); 2044 W.printNumber("Access", Offset - 0x7ff0); 2045 W.printHex("Initial", *It); 2046 } 2047 2048 template <class ELFT> 2049 void MipsGOTParser<ELFT>::printGlobalGotEntry( 2050 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 2051 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 2052 printGotEntry(GotAddr, BeginIt, It); 2053 2054 W.printHex("Value", Sym->st_value); 2055 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2056 2057 unsigned SectionIndex = 0; 2058 StringRef SectionName; 2059 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2060 Dumper->getShndxTable(), SectionName, SectionIndex); 2061 W.printHex("Section", SectionName, SectionIndex); 2062 2063 std::string FullSymbolName = 2064 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 2065 W.printNumber("Name", FullSymbolName, Sym->st_name); 2066 } 2067 2068 template <class ELFT> 2069 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2070 const GOTEntry *BeginIt, 2071 const GOTEntry *It, StringRef Purpose) { 2072 DictScope D(W, "Entry"); 2073 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2074 W.printHex("Address", PLTAddr + Offset); 2075 W.printHex("Initial", *It); 2076 W.printString("Purpose", Purpose); 2077 } 2078 2079 template <class ELFT> 2080 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2081 const GOTEntry *BeginIt, 2082 const GOTEntry *It, StringRef StrTable, 2083 const Elf_Sym *Sym) { 2084 DictScope D(W, "Entry"); 2085 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2086 W.printHex("Address", PLTAddr + Offset); 2087 W.printHex("Initial", *It); 2088 W.printHex("Value", Sym->st_value); 2089 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2090 2091 unsigned SectionIndex = 0; 2092 StringRef SectionName; 2093 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2094 Dumper->getShndxTable(), SectionName, SectionIndex); 2095 W.printHex("Section", SectionName, SectionIndex); 2096 2097 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 2098 W.printNumber("Name", FullSymbolName, Sym->st_name); 2099 } 2100 2101 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2102 if (Obj->getHeader()->e_machine != EM_MIPS) { 2103 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2104 return; 2105 } 2106 2107 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2108 GOTParser.parseGOT(); 2109 GOTParser.parsePLT(); 2110 } 2111 2112 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2113 {"None", Mips::AFL_EXT_NONE}, 2114 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2115 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2116 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2117 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2118 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2119 {"LSI R4010", Mips::AFL_EXT_4010}, 2120 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2121 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2122 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2123 {"MIPS R4650", Mips::AFL_EXT_4650}, 2124 {"MIPS R5900", Mips::AFL_EXT_5900}, 2125 {"MIPS R10000", Mips::AFL_EXT_10000}, 2126 {"NEC VR4100", Mips::AFL_EXT_4100}, 2127 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2128 {"NEC VR4120", Mips::AFL_EXT_4120}, 2129 {"NEC VR5400", Mips::AFL_EXT_5400}, 2130 {"NEC VR5500", Mips::AFL_EXT_5500}, 2131 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2132 {"Toshiba R3900", Mips::AFL_EXT_3900} 2133 }; 2134 2135 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2136 {"DSP", Mips::AFL_ASE_DSP}, 2137 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2138 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2139 {"MCU", Mips::AFL_ASE_MCU}, 2140 {"MDMX", Mips::AFL_ASE_MDMX}, 2141 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2142 {"MT", Mips::AFL_ASE_MT}, 2143 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2144 {"VZ", Mips::AFL_ASE_VIRT}, 2145 {"MSA", Mips::AFL_ASE_MSA}, 2146 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2147 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2148 {"XPA", Mips::AFL_ASE_XPA} 2149 }; 2150 2151 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2152 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2153 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2154 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2155 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2156 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2157 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2158 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2159 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2160 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2161 Mips::Val_GNU_MIPS_ABI_FP_64A} 2162 }; 2163 2164 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2165 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2166 }; 2167 2168 static int getMipsRegisterSize(uint8_t Flag) { 2169 switch (Flag) { 2170 case Mips::AFL_REG_NONE: 2171 return 0; 2172 case Mips::AFL_REG_32: 2173 return 32; 2174 case Mips::AFL_REG_64: 2175 return 64; 2176 case Mips::AFL_REG_128: 2177 return 128; 2178 default: 2179 return -1; 2180 } 2181 } 2182 2183 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2184 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2185 if (!Shdr) { 2186 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2187 return; 2188 } 2189 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2190 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2191 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2192 return; 2193 } 2194 2195 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2196 2197 raw_ostream &OS = W.getOStream(); 2198 DictScope GS(W, "MIPS ABI Flags"); 2199 2200 W.printNumber("Version", Flags->version); 2201 W.startLine() << "ISA: "; 2202 if (Flags->isa_rev <= 1) 2203 OS << format("MIPS%u", Flags->isa_level); 2204 else 2205 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2206 OS << "\n"; 2207 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2208 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2209 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2210 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2211 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2212 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2213 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2214 W.printHex("Flags 2", Flags->flags2); 2215 } 2216 2217 template <class ELFT> 2218 static void printMipsReginfoData(ScopedPrinter &W, 2219 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2220 W.printHex("GP", Reginfo.ri_gp_value); 2221 W.printHex("General Mask", Reginfo.ri_gprmask); 2222 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2223 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2224 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2225 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2226 } 2227 2228 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2229 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2230 if (!Shdr) { 2231 W.startLine() << "There is no .reginfo section in the file.\n"; 2232 return; 2233 } 2234 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2235 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2236 W.startLine() << "The .reginfo section has a wrong size.\n"; 2237 return; 2238 } 2239 2240 DictScope GS(W, "MIPS RegInfo"); 2241 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2242 printMipsReginfoData(W, *Reginfo); 2243 } 2244 2245 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2246 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2247 if (!Shdr) { 2248 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2249 return; 2250 } 2251 2252 DictScope GS(W, "MIPS Options"); 2253 2254 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2255 while (!Sec.empty()) { 2256 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2257 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2258 return; 2259 } 2260 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2261 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2262 switch (O->kind) { 2263 case ODK_REGINFO: 2264 printMipsReginfoData(W, O->getRegInfo()); 2265 break; 2266 default: 2267 W.startLine() << "Unsupported MIPS options tag.\n"; 2268 break; 2269 } 2270 Sec = Sec.slice(O->size); 2271 } 2272 } 2273 2274 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2275 const Elf_Shdr *StackMapSection = nullptr; 2276 for (const auto &Sec : Obj->sections()) { 2277 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2278 if (Name == ".llvm_stackmaps") { 2279 StackMapSection = &Sec; 2280 break; 2281 } 2282 } 2283 2284 if (!StackMapSection) 2285 return; 2286 2287 StringRef StackMapContents; 2288 ArrayRef<uint8_t> StackMapContentsArray = 2289 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2290 2291 prettyPrintStackMap(llvm::outs(), StackMapV1Parser<ELFT::TargetEndianness>( 2292 StackMapContentsArray)); 2293 } 2294 2295 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2296 ELFDumperStyle->printGroupSections(Obj); 2297 } 2298 2299 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2300 StringRef Str2) { 2301 OS.PadToColumn(2u); 2302 OS << Str1; 2303 OS.PadToColumn(37u); 2304 OS << Str2 << "\n"; 2305 OS.flush(); 2306 } 2307 2308 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2309 const Elf_Ehdr *e = Obj->getHeader(); 2310 OS << "ELF Header:\n"; 2311 OS << " Magic: "; 2312 std::string Str; 2313 for (int i = 0; i < ELF::EI_NIDENT; i++) 2314 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2315 OS << "\n"; 2316 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2317 printFields(OS, "Class:", Str); 2318 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2319 printFields(OS, "Data:", Str); 2320 OS.PadToColumn(2u); 2321 OS << "Version:"; 2322 OS.PadToColumn(37u); 2323 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2324 if (e->e_version == ELF::EV_CURRENT) 2325 OS << " (current)"; 2326 OS << "\n"; 2327 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2328 printFields(OS, "OS/ABI:", Str); 2329 Str = "0x" + to_hexString(e->e_version); 2330 Str = to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2331 printFields(OS, "ABI Version:", Str); 2332 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2333 printFields(OS, "Type:", Str); 2334 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2335 printFields(OS, "Machine:", Str); 2336 Str = "0x" + to_hexString(e->e_version); 2337 printFields(OS, "Version:", Str); 2338 Str = "0x" + to_hexString(e->e_entry); 2339 printFields(OS, "Entry point address:", Str); 2340 Str = to_string(e->e_phoff) + " (bytes into file)"; 2341 printFields(OS, "Start of program headers:", Str); 2342 Str = to_string(e->e_shoff) + " (bytes into file)"; 2343 printFields(OS, "Start of section headers:", Str); 2344 Str = "0x" + to_hexString(e->e_flags); 2345 printFields(OS, "Flags:", Str); 2346 Str = to_string(e->e_ehsize) + " (bytes)"; 2347 printFields(OS, "Size of this header:", Str); 2348 Str = to_string(e->e_phentsize) + " (bytes)"; 2349 printFields(OS, "Size of program headers:", Str); 2350 Str = to_string(e->e_phnum); 2351 printFields(OS, "Number of program headers:", Str); 2352 Str = to_string(e->e_shentsize) + " (bytes)"; 2353 printFields(OS, "Size of section headers:", Str); 2354 Str = to_string(e->e_shnum); 2355 printFields(OS, "Number of section headers:", Str); 2356 Str = to_string(e->e_shstrndx); 2357 printFields(OS, "Section header string table index:", Str); 2358 } 2359 2360 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2361 uint32_t SectionIndex = 0; 2362 bool HasGroups = false; 2363 for (const Elf_Shdr &Sec : Obj->sections()) { 2364 if (Sec.sh_type == ELF::SHT_GROUP) { 2365 HasGroups = true; 2366 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2367 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2368 const Elf_Sym *Signature = 2369 Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 2370 ArrayRef<Elf_Word> Data = unwrapOrError( 2371 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2372 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2373 OS << "\n" << getGroupType(Data[0]) << " group section [" 2374 << format_decimal(SectionIndex, 5) << "] `" << Name << "' [" 2375 << StrTable.data() + Signature->st_name << "] contains " 2376 << (Data.size() - 1) << " sections:\n" 2377 << " [Index] Name\n"; 2378 for (auto &Ndx : Data.slice(1)) { 2379 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2380 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2381 OS << " [" << format_decimal(Ndx, 5) << "] " << Name 2382 << "\n"; 2383 } 2384 } 2385 ++SectionIndex; 2386 } 2387 if (!HasGroups) 2388 OS << "There are no section groups in this file.\n"; 2389 } 2390 2391 template <class ELFT> 2392 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2393 const Elf_Rela &R, bool IsRela) { 2394 std::string Offset, Info, Addend = "", Value; 2395 SmallString<32> RelocName; 2396 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2397 StringRef TargetName; 2398 const Elf_Sym *Sym = nullptr; 2399 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2400 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2401 2402 // First two fields are bit width dependent. The rest of them are after are 2403 // fixed width. 2404 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2405 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2406 Sym = Obj->getRelocationSymbol(&R, SymTab); 2407 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2408 const Elf_Shdr *Sec = unwrapOrError( 2409 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2410 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2411 } else if (Sym) { 2412 TargetName = unwrapOrError(Sym->getName(StrTable)); 2413 } 2414 2415 if (Sym && IsRela) { 2416 if (R.r_addend < 0) 2417 Addend = " - "; 2418 else 2419 Addend = " + "; 2420 } 2421 2422 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2423 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2424 2425 int64_t RelAddend = R.r_addend; 2426 if (IsRela) 2427 Addend += to_hexString(std::abs(RelAddend), false); 2428 2429 if (Sym) 2430 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2431 2432 Fields[0].Str = Offset; 2433 Fields[1].Str = Info; 2434 Fields[2].Str = RelocName; 2435 Fields[3].Str = Value; 2436 Fields[4].Str = TargetName; 2437 for (auto &field : Fields) 2438 printField(field); 2439 OS << Addend; 2440 OS << "\n"; 2441 } 2442 2443 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2444 if (Is64) 2445 OS << " Offset Info Type" 2446 << " Symbol's Value Symbol's Name"; 2447 else 2448 OS << " Offset Info Type Sym. Value " 2449 << "Symbol's Name"; 2450 if (IsRela) 2451 OS << (IsRela ? " + Addend" : ""); 2452 OS << "\n"; 2453 } 2454 2455 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2456 bool HasRelocSections = false; 2457 for (const Elf_Shdr &Sec : Obj->sections()) { 2458 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 2459 continue; 2460 HasRelocSections = true; 2461 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2462 unsigned Entries = Sec.getEntityCount(); 2463 uintX_t Offset = Sec.sh_offset; 2464 OS << "\nRelocation section '" << Name << "' at offset 0x" 2465 << to_hexString(Offset, false) << " contains " << Entries 2466 << " entries:\n"; 2467 printRelocHeader(OS, ELFT::Is64Bits, (Sec.sh_type == ELF::SHT_RELA)); 2468 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2469 if (Sec.sh_type == ELF::SHT_REL) { 2470 for (const auto &R : Obj->rels(&Sec)) { 2471 Elf_Rela Rela; 2472 Rela.r_offset = R.r_offset; 2473 Rela.r_info = R.r_info; 2474 Rela.r_addend = 0; 2475 printRelocation(Obj, SymTab, Rela, false); 2476 } 2477 } else { 2478 for (const auto &R : Obj->relas(&Sec)) 2479 printRelocation(Obj, SymTab, R, true); 2480 } 2481 } 2482 if (!HasRelocSections) 2483 OS << "\nThere are no relocations in this file.\n"; 2484 } 2485 2486 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2487 using namespace ELF; 2488 switch (Arch) { 2489 case EM_ARM: 2490 switch (Type) { 2491 case SHT_ARM_EXIDX: 2492 return "ARM_EXIDX"; 2493 case SHT_ARM_PREEMPTMAP: 2494 return "ARM_PREEMPTMAP"; 2495 case SHT_ARM_ATTRIBUTES: 2496 return "ARM_ATTRIBUTES"; 2497 case SHT_ARM_DEBUGOVERLAY: 2498 return "ARM_DEBUGOVERLAY"; 2499 case SHT_ARM_OVERLAYSECTION: 2500 return "ARM_OVERLAYSECTION"; 2501 } 2502 case EM_X86_64: 2503 switch (Type) { 2504 case SHT_X86_64_UNWIND: 2505 return "X86_64_UNWIND"; 2506 } 2507 case EM_MIPS: 2508 case EM_MIPS_RS3_LE: 2509 switch (Type) { 2510 case SHT_MIPS_REGINFO: 2511 return "MIPS_REGINFO"; 2512 case SHT_MIPS_OPTIONS: 2513 return "MIPS_OPTIONS"; 2514 case SHT_MIPS_ABIFLAGS: 2515 return "MIPS_ABIFLAGS"; 2516 } 2517 } 2518 switch (Type) { 2519 case SHT_NULL: 2520 return "NULL"; 2521 case SHT_PROGBITS: 2522 return "PROGBITS"; 2523 case SHT_SYMTAB: 2524 return "SYMTAB"; 2525 case SHT_STRTAB: 2526 return "STRTAB"; 2527 case SHT_RELA: 2528 return "RELA"; 2529 case SHT_HASH: 2530 return "HASH"; 2531 case SHT_DYNAMIC: 2532 return "DYNAMIC"; 2533 case SHT_NOTE: 2534 return "NOTE"; 2535 case SHT_NOBITS: 2536 return "NOBITS"; 2537 case SHT_REL: 2538 return "REL"; 2539 case SHT_SHLIB: 2540 return "SHLIB"; 2541 case SHT_DYNSYM: 2542 return "DYNSYM"; 2543 case SHT_INIT_ARRAY: 2544 return "INIT_ARRAY"; 2545 case SHT_FINI_ARRAY: 2546 return "FINI_ARRAY"; 2547 case SHT_PREINIT_ARRAY: 2548 return "PREINIT_ARRAY"; 2549 case SHT_GROUP: 2550 return "GROUP"; 2551 case SHT_SYMTAB_SHNDX: 2552 return "SYMTAB SECTION INDICES"; 2553 // FIXME: Parse processor specific GNU attributes 2554 case SHT_GNU_ATTRIBUTES: 2555 return "ATTRIBUTES"; 2556 case SHT_GNU_HASH: 2557 return "GNU_HASH"; 2558 case SHT_GNU_verdef: 2559 return "VERDEF"; 2560 case SHT_GNU_verneed: 2561 return "VERNEED"; 2562 case SHT_GNU_versym: 2563 return "VERSYM"; 2564 default: 2565 return ""; 2566 } 2567 return ""; 2568 } 2569 2570 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2571 size_t SectionIndex = 0; 2572 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2573 Alignment; 2574 unsigned Bias; 2575 unsigned Width; 2576 2577 if (ELFT::Is64Bits) { 2578 Bias = 0; 2579 Width = 16; 2580 } else { 2581 Bias = 8; 2582 Width = 8; 2583 } 2584 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2585 << " section headers, starting at offset " 2586 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2587 OS << "Section Headers:\n"; 2588 Field Fields[11] = {{"[Nr]", 2}, 2589 {"Name", 7}, 2590 {"Type", 25}, 2591 {"Address", 41}, 2592 {"Off", 58 - Bias}, 2593 {"Size", 65 - Bias}, 2594 {"ES", 72 - Bias}, 2595 {"Flg", 75 - Bias}, 2596 {"Lk", 79 - Bias}, 2597 {"Inf", 82 - Bias}, 2598 {"Al", 86 - Bias}}; 2599 for (auto &f : Fields) 2600 printField(f); 2601 OS << "\n"; 2602 2603 for (const Elf_Shdr &Sec : Obj->sections()) { 2604 Number = to_string(SectionIndex); 2605 Fields[0].Str = Number; 2606 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2607 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2608 Fields[2].Str = Type; 2609 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2610 Fields[3].Str = Address; 2611 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2612 Fields[4].Str = Offset; 2613 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2614 Fields[5].Str = Size; 2615 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2616 Fields[6].Str = EntrySize; 2617 Flags = getGNUFlags(Sec.sh_flags); 2618 Fields[7].Str = Flags; 2619 Link = to_string(Sec.sh_link); 2620 Fields[8].Str = Link; 2621 Info = to_string(Sec.sh_info); 2622 Fields[9].Str = Info; 2623 Alignment = to_string(Sec.sh_addralign); 2624 Fields[10].Str = Alignment; 2625 OS.PadToColumn(Fields[0].Column); 2626 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2627 for (int i = 1; i < 7; i++) 2628 printField(Fields[i]); 2629 OS.PadToColumn(Fields[7].Column); 2630 OS << right_justify(Fields[7].Str, 3); 2631 OS.PadToColumn(Fields[8].Column); 2632 OS << right_justify(Fields[8].Str, 2); 2633 OS.PadToColumn(Fields[9].Column); 2634 OS << right_justify(Fields[9].Str, 3); 2635 OS.PadToColumn(Fields[10].Column); 2636 OS << right_justify(Fields[10].Str, 2); 2637 OS << "\n"; 2638 ++SectionIndex; 2639 } 2640 OS << "Key to Flags:\n" 2641 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2642 "(large)\n" 2643 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2644 x (unknown)\n" 2645 << " O (extra OS processing required) o (OS specific),\ 2646 p (processor specific)\n"; 2647 } 2648 2649 template <class ELFT> 2650 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2651 size_t Entries) { 2652 if (Name.size()) 2653 OS << "\nSymbol table '" << Name << "' contains " << Entries 2654 << " entries:\n"; 2655 else 2656 OS << "\n Symbol table for image:\n"; 2657 2658 if (ELFT::Is64Bits) 2659 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2660 else 2661 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2662 } 2663 2664 template <class ELFT> 2665 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2666 const Elf_Sym *Symbol, 2667 const Elf_Sym *FirstSym) { 2668 unsigned SectionIndex = Symbol->st_shndx; 2669 switch (SectionIndex) { 2670 case ELF::SHN_UNDEF: 2671 return "UND"; 2672 case ELF::SHN_ABS: 2673 return "ABS"; 2674 case ELF::SHN_COMMON: 2675 return "COM"; 2676 case ELF::SHN_XINDEX: 2677 SectionIndex = Obj->getExtendedSymbolTableIndex( 2678 Symbol, FirstSym, this->dumper()->getShndxTable()); 2679 default: 2680 // Find if: 2681 // Processor specific 2682 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2683 return std::string("PRC[0x") + 2684 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2685 // OS specific 2686 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2687 return std::string("OS[0x") + 2688 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2689 // Architecture reserved: 2690 if (SectionIndex >= ELF::SHN_LORESERVE && 2691 SectionIndex <= ELF::SHN_HIRESERVE) 2692 return std::string("RSV[0x") + 2693 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2694 // A normal section with an index 2695 return to_string(format_decimal(SectionIndex, 3)); 2696 } 2697 } 2698 2699 template <class ELFT> 2700 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2701 const Elf_Sym *FirstSym, StringRef StrTable, 2702 bool IsDynamic) { 2703 static int Idx = 0; 2704 static bool Dynamic = true; 2705 size_t Width; 2706 2707 // If this function was called with a different value from IsDynamic 2708 // from last call, happens when we move from dynamic to static symbol 2709 // table, "Num" field should be reset. 2710 if (!Dynamic != !IsDynamic) { 2711 Idx = 0; 2712 Dynamic = false; 2713 } 2714 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2715 unsigned Bias = 0; 2716 if (ELFT::Is64Bits) { 2717 Bias = 8; 2718 Width = 16; 2719 } else { 2720 Bias = 0; 2721 Width = 8; 2722 } 2723 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2724 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2725 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2726 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2727 Size = to_string(format_decimal(Symbol->st_size, 5)); 2728 unsigned char SymbolType = Symbol->getType(); 2729 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2730 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2731 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2732 else 2733 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2734 unsigned Vis = Symbol->getVisibility(); 2735 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2736 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2737 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2738 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2739 Fields[0].Str = Num; 2740 Fields[1].Str = Value; 2741 Fields[2].Str = Size; 2742 Fields[3].Str = Type; 2743 Fields[4].Str = Binding; 2744 Fields[5].Str = Visibility; 2745 Fields[6].Str = Section; 2746 Fields[7].Str = Name; 2747 for (auto &Entry : Fields) 2748 printField(Entry); 2749 OS << "\n"; 2750 } 2751 2752 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2753 this->dumper()->printSymbolsHelper(true); 2754 this->dumper()->printSymbolsHelper(false); 2755 } 2756 2757 template <class ELFT> 2758 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2759 this->dumper()->printSymbolsHelper(true); 2760 } 2761 2762 static inline std::string printPhdrFlags(unsigned Flag) { 2763 std::string Str; 2764 Str = (Flag & PF_R) ? "R" : " "; 2765 Str += (Flag & PF_W) ? "W" : " "; 2766 Str += (Flag & PF_X) ? "E" : " "; 2767 return Str; 2768 } 2769 2770 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 2771 // PT_TLS must only have SHF_TLS sections 2772 template <class ELFT> 2773 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 2774 const Elf_Shdr &Sec) { 2775 return (((Sec.sh_flags & ELF::SHF_TLS) && 2776 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 2777 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 2778 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 2779 } 2780 2781 // Non-SHT_NOBITS must have its offset inside the segment 2782 // Only non-zero section can be at end of segment 2783 template <class ELFT> 2784 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2785 if (Sec.sh_type == ELF::SHT_NOBITS) 2786 return true; 2787 bool IsSpecial = 2788 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2789 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2790 auto SectionSize = 2791 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2792 if (Sec.sh_offset >= Phdr.p_offset) 2793 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 2794 /*only non-zero sized sections at end*/ && 2795 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 2796 return false; 2797 } 2798 2799 // SHF_ALLOC must have VMA inside segment 2800 // Only non-zero section can be at end of segment 2801 template <class ELFT> 2802 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2803 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 2804 return true; 2805 bool IsSpecial = 2806 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2807 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2808 auto SectionSize = 2809 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2810 if (Sec.sh_addr >= Phdr.p_vaddr) 2811 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 2812 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 2813 return false; 2814 } 2815 2816 // No section with zero size must be at start or end of PT_DYNAMIC 2817 template <class ELFT> 2818 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2819 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 2820 return true; 2821 // Is section within the phdr both based on offset and VMA ? 2822 return ((Sec.sh_type == ELF::SHT_NOBITS) || 2823 (Sec.sh_offset > Phdr.p_offset && 2824 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 2825 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 2826 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 2827 } 2828 2829 template <class ELFT> 2830 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 2831 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2832 unsigned Width = ELFT::Is64Bits ? 18 : 10; 2833 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 2834 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 2835 2836 const Elf_Ehdr *Header = Obj->getHeader(); 2837 Field Fields[8] = {2, 17, 26, 37 + Bias, 2838 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 2839 OS << "\nElf file type is " 2840 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 2841 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 2842 << "There are " << Header->e_phnum << " program headers," 2843 << " starting at offset " << Header->e_phoff << "\n\n" 2844 << "Program Headers:\n"; 2845 if (ELFT::Is64Bits) 2846 OS << " Type Offset VirtAddr PhysAddr " 2847 << " FileSiz MemSiz Flg Align\n"; 2848 else 2849 OS << " Type Offset VirtAddr PhysAddr FileSiz " 2850 << "MemSiz Flg Align\n"; 2851 for (const auto &Phdr : Obj->program_headers()) { 2852 Type = getElfPtType(Header->e_machine, Phdr.p_type); 2853 Offset = to_string(format_hex(Phdr.p_offset, 8)); 2854 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 2855 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 2856 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 2857 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 2858 Flag = printPhdrFlags(Phdr.p_flags); 2859 Align = to_string(format_hex(Phdr.p_align, 1)); 2860 Fields[0].Str = Type; 2861 Fields[1].Str = Offset; 2862 Fields[2].Str = VMA; 2863 Fields[3].Str = LMA; 2864 Fields[4].Str = FileSz; 2865 Fields[5].Str = MemSz; 2866 Fields[6].Str = Flag; 2867 Fields[7].Str = Align; 2868 for (auto Field : Fields) 2869 printField(Field); 2870 if (Phdr.p_type == ELF::PT_INTERP) { 2871 OS << "\n [Requesting program interpreter: "; 2872 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 2873 } 2874 OS << "\n"; 2875 } 2876 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 2877 int Phnum = 0; 2878 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 2879 std::string Sections; 2880 OS << format(" %2.2d ", Phnum++); 2881 for (const Elf_Shdr &Sec : Obj->sections()) { 2882 // Check if each section is in a segment and then print mapping. 2883 // readelf additionally makes sure it does not print zero sized sections 2884 // at end of segments and for PT_DYNAMIC both start and end of section 2885 // .tbss must only be shown in PT_TLS section. 2886 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 2887 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 2888 Phdr.p_type != ELF::PT_TLS; 2889 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 2890 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 2891 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 2892 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 2893 } 2894 OS << Sections << "\n"; 2895 OS.flush(); 2896 } 2897 } 2898 2899 template <class ELFT> 2900 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 2901 bool IsRela) { 2902 SmallString<32> RelocName; 2903 StringRef SymbolName; 2904 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2905 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2906 // First two fields are bit width dependent. The rest of them are after are 2907 // fixed width. 2908 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2909 2910 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 2911 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 2912 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2913 SymbolName = 2914 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 2915 std::string Addend = "", Info, Offset, Value; 2916 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2917 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2918 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2919 int64_t RelAddend = R.r_addend; 2920 if (SymbolName.size() && IsRela) { 2921 if (R.r_addend < 0) 2922 Addend = " - "; 2923 else 2924 Addend = " + "; 2925 } 2926 2927 if (!SymbolName.size() && Sym->getValue() == 0) 2928 Value = ""; 2929 2930 if (IsRela) 2931 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 2932 2933 2934 Fields[0].Str = Offset; 2935 Fields[1].Str = Info; 2936 Fields[2].Str = RelocName.c_str(); 2937 Fields[3].Str = Value; 2938 Fields[4].Str = SymbolName; 2939 for (auto &Field : Fields) 2940 printField(Field); 2941 OS << Addend; 2942 OS << "\n"; 2943 } 2944 2945 template <class ELFT> 2946 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 2947 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 2948 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 2949 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 2950 if (DynRelaRegion.Size > 0) { 2951 OS << "\n'RELA' relocation section at offset " 2952 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 2953 Obj->base(), 2954 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 2955 printRelocHeader(OS, ELFT::Is64Bits, true); 2956 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 2957 printDynamicRelocation(Obj, Rela, true); 2958 } 2959 if (DynRelRegion.Size > 0) { 2960 OS << "\n'REL' relocation section at offset " 2961 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 2962 Obj->base(), 2963 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 2964 printRelocHeader(OS, ELFT::Is64Bits, false); 2965 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 2966 Elf_Rela Rela; 2967 Rela.r_offset = Rel.r_offset; 2968 Rela.r_info = Rel.r_info; 2969 Rela.r_addend = 0; 2970 printDynamicRelocation(Obj, Rela, false); 2971 } 2972 } 2973 if (DynPLTRelRegion.Size) { 2974 OS << "\n'PLT' relocation section at offset " 2975 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 2976 Obj->base(), 2977 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 2978 } 2979 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 2980 printRelocHeader(OS, ELFT::Is64Bits, true); 2981 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 2982 printDynamicRelocation(Obj, Rela, true); 2983 } else { 2984 printRelocHeader(OS, ELFT::Is64Bits, false); 2985 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 2986 Elf_Rela Rela; 2987 Rela.r_offset = Rel.r_offset; 2988 Rela.r_info = Rel.r_info; 2989 Rela.r_addend = 0; 2990 printDynamicRelocation(Obj, Rela, false); 2991 } 2992 } 2993 } 2994 2995 // Hash histogram shows statistics of how efficient the hash was for the 2996 // dynamic symbol table. The table shows number of hash buckets for different 2997 // lengths of chains as absolute number and percentage of the total buckets. 2998 // Additionally cumulative coverage of symbols for each set of buckets. 2999 template <class ELFT> 3000 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3001 3002 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3003 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3004 3005 // Print histogram for .hash section 3006 if (HashTable) { 3007 size_t NBucket = HashTable->nbucket; 3008 size_t NChain = HashTable->nchain; 3009 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3010 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3011 size_t TotalSyms = 0; 3012 // If hash table is correct, we have at least chains with 0 length 3013 size_t MaxChain = 1; 3014 size_t CumulativeNonZero = 0; 3015 3016 if (NChain == 0 || NBucket == 0) 3017 return; 3018 3019 std::vector<size_t> ChainLen(NBucket, 0); 3020 // Go over all buckets and and note chain lengths of each bucket (total 3021 // unique chain lengths). 3022 for (size_t B = 0; B < NBucket; B++) { 3023 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3024 if (MaxChain <= ++ChainLen[B]) 3025 MaxChain++; 3026 TotalSyms += ChainLen[B]; 3027 } 3028 3029 if (!TotalSyms) 3030 return; 3031 3032 std::vector<size_t> Count(MaxChain, 0) ; 3033 // Count how long is the chain for each bucket 3034 for (size_t B = 0; B < NBucket; B++) 3035 ++Count[ChainLen[B]]; 3036 // Print Number of buckets with each chain lengths and their cumulative 3037 // coverage of the symbols 3038 OS << "Histogram for bucket list length (total of " << NBucket 3039 << " buckets)\n" 3040 << " Length Number % of total Coverage\n"; 3041 for (size_t I = 0; I < MaxChain; I++) { 3042 CumulativeNonZero += Count[I] * I; 3043 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3044 (Count[I] * 100.0) / NBucket, 3045 (CumulativeNonZero * 100.0) / TotalSyms); 3046 } 3047 } 3048 3049 // Print histogram for .gnu.hash section 3050 if (GnuHashTable) { 3051 size_t NBucket = GnuHashTable->nbuckets; 3052 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3053 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3054 if (!NumSyms) 3055 return; 3056 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3057 size_t Symndx = GnuHashTable->symndx; 3058 size_t TotalSyms = 0; 3059 size_t MaxChain = 1; 3060 size_t CumulativeNonZero = 0; 3061 3062 if (Chains.size() == 0 || NBucket == 0) 3063 return; 3064 3065 std::vector<size_t> ChainLen(NBucket, 0); 3066 3067 for (size_t B = 0; B < NBucket; B++) { 3068 if (!Buckets[B]) 3069 continue; 3070 size_t Len = 1; 3071 for (size_t C = Buckets[B] - Symndx; 3072 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3073 if (MaxChain < ++Len) 3074 MaxChain++; 3075 ChainLen[B] = Len; 3076 TotalSyms += Len; 3077 } 3078 MaxChain++; 3079 3080 if (!TotalSyms) 3081 return; 3082 3083 std::vector<size_t> Count(MaxChain, 0) ; 3084 for (size_t B = 0; B < NBucket; B++) 3085 ++Count[ChainLen[B]]; 3086 // Print Number of buckets with each chain lengths and their cumulative 3087 // coverage of the symbols 3088 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3089 << " buckets)\n" 3090 << " Length Number % of total Coverage\n"; 3091 for (size_t I = 0; I <MaxChain; I++) { 3092 CumulativeNonZero += Count[I] * I; 3093 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3094 (Count[I] * 100.0) / NBucket, 3095 (CumulativeNonZero * 100.0) / TotalSyms); 3096 } 3097 } 3098 } 3099 3100 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3101 const Elf_Ehdr *e = Obj->getHeader(); 3102 { 3103 DictScope D(W, "ElfHeader"); 3104 { 3105 DictScope D(W, "Ident"); 3106 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3107 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3108 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3109 makeArrayRef(ElfDataEncoding)); 3110 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3111 3112 // Handle architecture specific OS/ABI values. 3113 if (e->e_machine == ELF::EM_AMDGPU && 3114 e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA) 3115 W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA); 3116 else 3117 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], 3118 makeArrayRef(ElfOSABI)); 3119 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3120 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3121 } 3122 3123 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3124 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3125 W.printNumber("Version", e->e_version); 3126 W.printHex("Entry", e->e_entry); 3127 W.printHex("ProgramHeaderOffset", e->e_phoff); 3128 W.printHex("SectionHeaderOffset", e->e_shoff); 3129 if (e->e_machine == EM_MIPS) 3130 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3131 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3132 unsigned(ELF::EF_MIPS_MACH)); 3133 else 3134 W.printFlags("Flags", e->e_flags); 3135 W.printNumber("HeaderSize", e->e_ehsize); 3136 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3137 W.printNumber("ProgramHeaderCount", e->e_phnum); 3138 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3139 W.printNumber("SectionHeaderCount", e->e_shnum); 3140 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3141 } 3142 } 3143 3144 template <class ELFT> 3145 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3146 DictScope Lists(W, "Groups"); 3147 uint32_t SectionIndex = 0; 3148 bool HasGroups = false; 3149 for (const Elf_Shdr &Sec : Obj->sections()) { 3150 if (Sec.sh_type == ELF::SHT_GROUP) { 3151 HasGroups = true; 3152 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 3153 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3154 const Elf_Sym *Sym = Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 3155 auto Data = unwrapOrError( 3156 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 3157 DictScope D(W, "Group"); 3158 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3159 W.printNumber("Name", Name, Sec.sh_name); 3160 W.printNumber("Index", SectionIndex); 3161 W.printHex("Type", getGroupType(Data[0]), Data[0]); 3162 W.startLine() << "Signature: " << StrTable.data() + Sym->st_name << "\n"; 3163 { 3164 ListScope L(W, "Section(s) in group"); 3165 size_t Member = 1; 3166 while (Member < Data.size()) { 3167 auto Sec = unwrapOrError(Obj->getSection(Data[Member])); 3168 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 3169 W.startLine() << Name << " (" << Data[Member++] << ")\n"; 3170 } 3171 } 3172 } 3173 ++SectionIndex; 3174 } 3175 if (!HasGroups) 3176 W.startLine() << "There are no group sections in the file.\n"; 3177 } 3178 3179 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3180 ListScope D(W, "Relocations"); 3181 3182 int SectionNumber = -1; 3183 for (const Elf_Shdr &Sec : Obj->sections()) { 3184 ++SectionNumber; 3185 3186 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 3187 continue; 3188 3189 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3190 3191 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3192 W.indent(); 3193 3194 printRelocations(&Sec, Obj); 3195 3196 W.unindent(); 3197 W.startLine() << "}\n"; 3198 } 3199 } 3200 3201 template <class ELFT> 3202 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3203 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3204 3205 switch (Sec->sh_type) { 3206 case ELF::SHT_REL: 3207 for (const Elf_Rel &R : Obj->rels(Sec)) { 3208 Elf_Rela Rela; 3209 Rela.r_offset = R.r_offset; 3210 Rela.r_info = R.r_info; 3211 Rela.r_addend = 0; 3212 printRelocation(Obj, Rela, SymTab); 3213 } 3214 break; 3215 case ELF::SHT_RELA: 3216 for (const Elf_Rela &R : Obj->relas(Sec)) 3217 printRelocation(Obj, R, SymTab); 3218 break; 3219 } 3220 } 3221 3222 template <class ELFT> 3223 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3224 const Elf_Shdr *SymTab) { 3225 SmallString<32> RelocName; 3226 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3227 StringRef TargetName; 3228 const Elf_Sym *Sym = Obj->getRelocationSymbol(&Rel, SymTab); 3229 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3230 const Elf_Shdr *Sec = unwrapOrError( 3231 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3232 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3233 } else if (Sym) { 3234 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3235 TargetName = unwrapOrError(Sym->getName(StrTable)); 3236 } 3237 3238 if (opts::ExpandRelocs) { 3239 DictScope Group(W, "Relocation"); 3240 W.printHex("Offset", Rel.r_offset); 3241 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3242 W.printNumber("Symbol", TargetName.size() > 0 ? TargetName : "-", 3243 Rel.getSymbol(Obj->isMips64EL())); 3244 W.printHex("Addend", Rel.r_addend); 3245 } else { 3246 raw_ostream &OS = W.startLine(); 3247 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3248 << (TargetName.size() > 0 ? TargetName : "-") << " " 3249 << W.hex(Rel.r_addend) << "\n"; 3250 } 3251 } 3252 3253 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3254 ListScope SectionsD(W, "Sections"); 3255 3256 int SectionIndex = -1; 3257 for (const Elf_Shdr &Sec : Obj->sections()) { 3258 ++SectionIndex; 3259 3260 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3261 3262 DictScope SectionD(W, "Section"); 3263 W.printNumber("Index", SectionIndex); 3264 W.printNumber("Name", Name, Sec.sh_name); 3265 W.printHex("Type", 3266 getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type), 3267 Sec.sh_type); 3268 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3269 std::end(ElfSectionFlags)); 3270 switch (Obj->getHeader()->e_machine) { 3271 case EM_AMDGPU: 3272 SectionFlags.insert(SectionFlags.end(), std::begin(ElfAMDGPUSectionFlags), 3273 std::end(ElfAMDGPUSectionFlags)); 3274 break; 3275 case EM_HEXAGON: 3276 SectionFlags.insert(SectionFlags.end(), 3277 std::begin(ElfHexagonSectionFlags), 3278 std::end(ElfHexagonSectionFlags)); 3279 break; 3280 case EM_MIPS: 3281 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3282 std::end(ElfMipsSectionFlags)); 3283 break; 3284 case EM_X86_64: 3285 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3286 std::end(ElfX86_64SectionFlags)); 3287 break; 3288 case EM_XCORE: 3289 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3290 std::end(ElfXCoreSectionFlags)); 3291 break; 3292 default: 3293 // Nothing to do. 3294 break; 3295 } 3296 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3297 W.printHex("Address", Sec.sh_addr); 3298 W.printHex("Offset", Sec.sh_offset); 3299 W.printNumber("Size", Sec.sh_size); 3300 W.printNumber("Link", Sec.sh_link); 3301 W.printNumber("Info", Sec.sh_info); 3302 W.printNumber("AddressAlignment", Sec.sh_addralign); 3303 W.printNumber("EntrySize", Sec.sh_entsize); 3304 3305 if (opts::SectionRelocations) { 3306 ListScope D(W, "Relocations"); 3307 printRelocations(&Sec, Obj); 3308 } 3309 3310 if (opts::SectionSymbols) { 3311 ListScope D(W, "Symbols"); 3312 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3313 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3314 3315 for (const Elf_Sym &Sym : Obj->symbols(Symtab)) { 3316 const Elf_Shdr *SymSec = unwrapOrError( 3317 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3318 if (SymSec == &Sec) 3319 printSymbol(Obj, &Sym, Obj->symbol_begin(Symtab), StrTable, false); 3320 } 3321 } 3322 3323 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3324 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3325 W.printBinaryBlock("SectionData", 3326 StringRef((const char *)Data.data(), Data.size())); 3327 } 3328 } 3329 } 3330 3331 template <class ELFT> 3332 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3333 const Elf_Sym *First, StringRef StrTable, 3334 bool IsDynamic) { 3335 unsigned SectionIndex = 0; 3336 StringRef SectionName; 3337 getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(), 3338 SectionName, SectionIndex); 3339 std::string FullSymbolName = 3340 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3341 unsigned char SymbolType = Symbol->getType(); 3342 3343 DictScope D(W, "Symbol"); 3344 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3345 W.printHex("Value", Symbol->st_value); 3346 W.printNumber("Size", Symbol->st_size); 3347 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3348 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3349 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3350 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3351 else 3352 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3353 if (Symbol->st_other == 0) 3354 // Usually st_other flag is zero. Do not pollute the output 3355 // by flags enumeration in that case. 3356 W.printNumber("Other", 0); 3357 else { 3358 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3359 std::end(ElfSymOtherFlags)); 3360 if (Obj->getHeader()->e_machine == EM_MIPS) { 3361 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3362 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3363 // cases separately. 3364 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3365 SymOtherFlags.insert(SymOtherFlags.end(), 3366 std::begin(ElfMips16SymOtherFlags), 3367 std::end(ElfMips16SymOtherFlags)); 3368 else 3369 SymOtherFlags.insert(SymOtherFlags.end(), 3370 std::begin(ElfMipsSymOtherFlags), 3371 std::end(ElfMipsSymOtherFlags)); 3372 } 3373 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3374 } 3375 W.printHex("Section", SectionName, SectionIndex); 3376 } 3377 3378 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3379 ListScope Group(W, "Symbols"); 3380 this->dumper()->printSymbolsHelper(false); 3381 } 3382 3383 template <class ELFT> 3384 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3385 ListScope Group(W, "DynamicSymbols"); 3386 this->dumper()->printSymbolsHelper(true); 3387 } 3388 3389 template <class ELFT> 3390 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3391 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3392 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3393 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3394 if (DynRelRegion.Size && DynRelaRegion.Size) 3395 report_fatal_error("There are both REL and RELA dynamic relocations"); 3396 W.startLine() << "Dynamic Relocations {\n"; 3397 W.indent(); 3398 if (DynRelaRegion.Size > 0) 3399 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3400 printDynamicRelocation(Obj, Rela); 3401 else 3402 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3403 Elf_Rela Rela; 3404 Rela.r_offset = Rel.r_offset; 3405 Rela.r_info = Rel.r_info; 3406 Rela.r_addend = 0; 3407 printDynamicRelocation(Obj, Rela); 3408 } 3409 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3410 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3411 printDynamicRelocation(Obj, Rela); 3412 else 3413 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3414 Elf_Rela Rela; 3415 Rela.r_offset = Rel.r_offset; 3416 Rela.r_info = Rel.r_info; 3417 Rela.r_addend = 0; 3418 printDynamicRelocation(Obj, Rela); 3419 } 3420 W.unindent(); 3421 W.startLine() << "}\n"; 3422 } 3423 3424 template <class ELFT> 3425 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 3426 SmallString<32> RelocName; 3427 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3428 StringRef SymbolName; 3429 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 3430 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3431 SymbolName = 3432 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3433 if (opts::ExpandRelocs) { 3434 DictScope Group(W, "Relocation"); 3435 W.printHex("Offset", Rel.r_offset); 3436 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3437 W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-"); 3438 W.printHex("Addend", Rel.r_addend); 3439 } else { 3440 raw_ostream &OS = W.startLine(); 3441 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3442 << (SymbolName.size() > 0 ? SymbolName : "-") << " " 3443 << W.hex(Rel.r_addend) << "\n"; 3444 } 3445 } 3446 3447 template <class ELFT> 3448 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3449 ListScope L(W, "ProgramHeaders"); 3450 3451 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 3452 DictScope P(W, "ProgramHeader"); 3453 W.printHex("Type", 3454 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 3455 Phdr.p_type); 3456 W.printHex("Offset", Phdr.p_offset); 3457 W.printHex("VirtualAddress", Phdr.p_vaddr); 3458 W.printHex("PhysicalAddress", Phdr.p_paddr); 3459 W.printNumber("FileSize", Phdr.p_filesz); 3460 W.printNumber("MemSize", Phdr.p_memsz); 3461 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 3462 W.printNumber("Alignment", Phdr.p_align); 3463 } 3464 } 3465 template <class ELFT> 3466 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3467 W.startLine() << "Hash Histogram not implemented!\n"; 3468 } 3469