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 "llvm-readobj.h" 16 #include "ARMAttributeParser.h" 17 #include "ARMEHABIPrinter.h" 18 #include "Error.h" 19 #include "ObjDumper.h" 20 #include "StackMapPrinter.h" 21 #include "StreamWriter.h" 22 #include "llvm/ADT/Optional.h" 23 #include "llvm/ADT/SmallString.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/Object/ELFObjectFile.h" 26 #include "llvm/Support/ARMBuildAttributes.h" 27 #include "llvm/Support/Compiler.h" 28 #include "llvm/Support/Format.h" 29 #include "llvm/Support/MathExtras.h" 30 #include "llvm/Support/MipsABIFlags.h" 31 #include "llvm/Support/raw_ostream.h" 32 #include "llvm/Support/FormattedStream.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, StreamWriter &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; 123 124 void printStackMap() const override; 125 126 void printHashHistogram() override; 127 128 private: 129 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 130 typedef ELFFile<ELFT> ELFO; 131 typedef typename ELFO::Elf_Shdr Elf_Shdr; 132 typedef typename ELFO::Elf_Sym Elf_Sym; 133 typedef typename ELFO::Elf_Sym_Range Elf_Sym_Range; 134 typedef typename ELFO::Elf_Dyn Elf_Dyn; 135 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 136 typedef typename ELFO::Elf_Rel Elf_Rel; 137 typedef typename ELFO::Elf_Rela Elf_Rela; 138 typedef typename ELFO::Elf_Rel_Range Elf_Rel_Range; 139 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; 140 typedef typename ELFO::Elf_Phdr Elf_Phdr; 141 typedef typename ELFO::Elf_Half Elf_Half; 142 typedef typename ELFO::Elf_Hash Elf_Hash; 143 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; 144 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; 145 typedef typename ELFO::Elf_Word Elf_Word; 146 typedef typename ELFO::uintX_t uintX_t; 147 typedef typename ELFO::Elf_Versym Elf_Versym; 148 typedef typename ELFO::Elf_Verneed Elf_Verneed; 149 typedef typename ELFO::Elf_Vernaux Elf_Vernaux; 150 typedef typename ELFO::Elf_Verdef Elf_Verdef; 151 typedef typename ELFO::Elf_Verdaux Elf_Verdaux; 152 153 DynRegionInfo checkDRI(DynRegionInfo DRI) { 154 if (DRI.Addr < Obj->base() || 155 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 156 error(llvm::object::object_error::parse_failed); 157 return DRI; 158 } 159 160 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 161 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 162 } 163 164 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 165 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 166 } 167 168 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 169 170 void printValue(uint64_t Type, uint64_t Value); 171 172 StringRef getDynamicString(uint64_t Offset) const; 173 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 174 bool &IsDefault) const; 175 void LoadVersionMap() const; 176 void LoadVersionNeeds(const Elf_Shdr *ec) const; 177 void LoadVersionDefs(const Elf_Shdr *sec) const; 178 179 const ELFO *Obj; 180 DynRegionInfo DynRelRegion; 181 DynRegionInfo DynRelaRegion; 182 DynRegionInfo DynPLTRelRegion; 183 DynRegionInfo DynSymRegion; 184 DynRegionInfo DynamicTable; 185 StringRef DynamicStringTable; 186 StringRef SOName; 187 const Elf_Hash *HashTable = nullptr; 188 const Elf_GnuHash *GnuHashTable = nullptr; 189 const Elf_Shdr *DotSymtabSec = nullptr; 190 StringRef DynSymtabName; 191 ArrayRef<Elf_Word> ShndxTable; 192 193 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 194 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 195 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 196 197 // Records for each version index the corresponding Verdef or Vernaux entry. 198 // This is filled the first time LoadVersionMap() is called. 199 class VersionMapEntry : public PointerIntPair<const void *, 1> { 200 public: 201 // If the integer is 0, this is an Elf_Verdef*. 202 // If the integer is 1, this is an Elf_Vernaux*. 203 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 204 VersionMapEntry(const Elf_Verdef *verdef) 205 : PointerIntPair<const void *, 1>(verdef, 0) {} 206 VersionMapEntry(const Elf_Vernaux *vernaux) 207 : PointerIntPair<const void *, 1>(vernaux, 1) {} 208 bool isNull() const { return getPointer() == nullptr; } 209 bool isVerdef() const { return !isNull() && getInt() == 0; } 210 bool isVernaux() const { return !isNull() && getInt() == 1; } 211 const Elf_Verdef *getVerdef() const { 212 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 213 } 214 const Elf_Vernaux *getVernaux() const { 215 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 216 } 217 }; 218 mutable SmallVector<VersionMapEntry, 16> VersionMap; 219 220 public: 221 Elf_Dyn_Range dynamic_table() const { 222 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 223 } 224 225 Elf_Sym_Range dynamic_symbols() const { 226 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 227 } 228 229 Elf_Rel_Range dyn_rels() const; 230 Elf_Rela_Range dyn_relas() const; 231 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 232 bool IsDynamic) const; 233 234 void printSymbolsHelper(bool IsDynamic) const; 235 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 236 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 237 StringRef getDynamicStringTable() const { return DynamicStringTable; } 238 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 239 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 240 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 241 const Elf_Hash *getHashTable() const { return HashTable; } 242 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 243 }; 244 245 template <class ELFT> 246 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 247 StringRef StrTable, SymtabName; 248 size_t Entries = 0; 249 Elf_Sym_Range Syms(nullptr, nullptr); 250 if (IsDynamic) { 251 StrTable = DynamicStringTable; 252 Syms = dynamic_symbols(); 253 SymtabName = DynSymtabName; 254 if (DynSymRegion.Addr) 255 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 256 } else { 257 if (!DotSymtabSec) 258 return; 259 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 260 Syms = Obj->symbols(DotSymtabSec); 261 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 262 Entries = DotSymtabSec->getEntityCount(); 263 } 264 if (Syms.begin() == Syms.end()) 265 return; 266 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 267 for (const auto &Sym : Syms) 268 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 269 } 270 271 template <typename ELFT> class DumpStyle { 272 public: 273 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 274 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 275 276 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 277 virtual ~DumpStyle() {} 278 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 279 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 280 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 281 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 282 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 283 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 284 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 285 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 286 size_t Offset) { 287 return; 288 } 289 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 290 const Elf_Sym *FirstSym, StringRef StrTable, 291 bool IsDynamic) = 0; 292 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 293 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 294 const ELFDumper<ELFT> *dumper() const { return Dumper; } 295 private: 296 const ELFDumper<ELFT> *Dumper; 297 }; 298 299 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 300 formatted_raw_ostream OS; 301 public: 302 TYPEDEF_ELF_TYPES(ELFT) 303 GNUStyle(StreamWriter &W, ELFDumper<ELFT> *Dumper) 304 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 305 void printFileHeaders(const ELFO *Obj) override; 306 void printGroupSections(const ELFFile<ELFT> *Obj) override; 307 void printRelocations(const ELFO *Obj) override; 308 void printSections(const ELFO *Obj) override; 309 void printSymbols(const ELFO *Obj) override; 310 void printDynamicSymbols(const ELFO *Obj) override; 311 void printDynamicRelocations(const ELFO *Obj) override; 312 virtual void printSymtabMessage(const ELFO *Obj, StringRef Name, 313 size_t Offset) override; 314 void printProgramHeaders(const ELFO *Obj) override; 315 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 316 317 private: 318 struct Field { 319 StringRef Str; 320 unsigned Column; 321 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 322 Field(unsigned Col) : Str(""), Column(Col) {} 323 }; 324 325 template <typename T, typename TEnum> 326 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 327 for (const auto &EnumItem : EnumValues) 328 if (EnumItem.Value == Value) 329 return EnumItem.AltName; 330 return to_hexString(Value, false); 331 } 332 333 formatted_raw_ostream &printField(struct Field F) { 334 if (F.Column != 0) 335 OS.PadToColumn(F.Column); 336 OS << F.Str; 337 OS.flush(); 338 return OS; 339 } 340 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 341 const Elf_Rela &R, bool IsRela); 342 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 343 StringRef StrTable, bool IsDynamic) override; 344 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 345 const Elf_Sym *FirstSym); 346 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 347 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 348 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 349 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 350 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 351 }; 352 353 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 354 public: 355 TYPEDEF_ELF_TYPES(ELFT) 356 LLVMStyle(StreamWriter &W, ELFDumper<ELFT> *Dumper) 357 : DumpStyle<ELFT>(Dumper), W(W) {} 358 359 void printFileHeaders(const ELFO *Obj) override; 360 void printGroupSections(const ELFFile<ELFT> *Obj) override; 361 void printRelocations(const ELFO *Obj) override; 362 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 363 void printSections(const ELFO *Obj) override; 364 void printSymbols(const ELFO *Obj) override; 365 void printDynamicSymbols(const ELFO *Obj) override; 366 void printDynamicRelocations(const ELFO *Obj) override; 367 void printProgramHeaders(const ELFO *Obj) override; 368 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 369 370 private: 371 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 372 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 373 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 374 StringRef StrTable, bool IsDynamic) override; 375 StreamWriter &W; 376 }; 377 378 } // namespace 379 380 namespace llvm { 381 382 template <class ELFT> 383 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 384 StreamWriter &Writer, 385 std::unique_ptr<ObjDumper> &Result) { 386 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 387 return readobj_error::success; 388 } 389 390 std::error_code createELFDumper(const object::ObjectFile *Obj, 391 StreamWriter &Writer, 392 std::unique_ptr<ObjDumper> &Result) { 393 // Little-endian 32-bit 394 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 395 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 396 397 // Big-endian 32-bit 398 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 399 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 400 401 // Little-endian 64-bit 402 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 403 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 404 405 // Big-endian 64-bit 406 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 407 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 408 409 return readobj_error::unsupported_obj_file_format; 410 } 411 412 } // namespace llvm 413 414 // Iterate through the versions needed section, and place each Elf_Vernaux 415 // in the VersionMap according to its index. 416 template <class ELFT> 417 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 418 unsigned vn_size = sec->sh_size; // Size of section in bytes 419 unsigned vn_count = sec->sh_info; // Number of Verneed entries 420 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 421 const char *sec_end = sec_start + vn_size; 422 // The first Verneed entry is at the start of the section. 423 const char *p = sec_start; 424 for (unsigned i = 0; i < vn_count; i++) { 425 if (p + sizeof(Elf_Verneed) > sec_end) 426 report_fatal_error("Section ended unexpectedly while scanning " 427 "version needed records."); 428 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 429 if (vn->vn_version != ELF::VER_NEED_CURRENT) 430 report_fatal_error("Unexpected verneed version"); 431 // Iterate through the Vernaux entries 432 const char *paux = p + vn->vn_aux; 433 for (unsigned j = 0; j < vn->vn_cnt; j++) { 434 if (paux + sizeof(Elf_Vernaux) > sec_end) 435 report_fatal_error("Section ended unexpected while scanning auxiliary " 436 "version needed records."); 437 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 438 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 439 if (index >= VersionMap.size()) 440 VersionMap.resize(index + 1); 441 VersionMap[index] = VersionMapEntry(vna); 442 paux += vna->vna_next; 443 } 444 p += vn->vn_next; 445 } 446 } 447 448 // Iterate through the version definitions, and place each Elf_Verdef 449 // in the VersionMap according to its index. 450 template <class ELFT> 451 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 452 unsigned vd_size = sec->sh_size; // Size of section in bytes 453 unsigned vd_count = sec->sh_info; // Number of Verdef entries 454 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 455 const char *sec_end = sec_start + vd_size; 456 // The first Verdef entry is at the start of the section. 457 const char *p = sec_start; 458 for (unsigned i = 0; i < vd_count; i++) { 459 if (p + sizeof(Elf_Verdef) > sec_end) 460 report_fatal_error("Section ended unexpectedly while scanning " 461 "version definitions."); 462 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 463 if (vd->vd_version != ELF::VER_DEF_CURRENT) 464 report_fatal_error("Unexpected verdef version"); 465 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 466 if (index >= VersionMap.size()) 467 VersionMap.resize(index + 1); 468 VersionMap[index] = VersionMapEntry(vd); 469 p += vd->vd_next; 470 } 471 } 472 473 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 474 // If there is no dynamic symtab or version table, there is nothing to do. 475 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 476 return; 477 478 // Has the VersionMap already been loaded? 479 if (VersionMap.size() > 0) 480 return; 481 482 // The first two version indexes are reserved. 483 // Index 0 is LOCAL, index 1 is GLOBAL. 484 VersionMap.push_back(VersionMapEntry()); 485 VersionMap.push_back(VersionMapEntry()); 486 487 if (dot_gnu_version_d_sec) 488 LoadVersionDefs(dot_gnu_version_d_sec); 489 490 if (dot_gnu_version_r_sec) 491 LoadVersionNeeds(dot_gnu_version_r_sec); 492 } 493 494 495 template <typename ELFO, class ELFT> 496 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, 497 const ELFO *Obj, 498 const typename ELFO::Elf_Shdr *Sec, 499 StreamWriter &W) { 500 DictScope SS(W, "Version symbols"); 501 if (!Sec) 502 return; 503 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 504 W.printNumber("Section Name", Name, Sec->sh_name); 505 W.printHex("Address", Sec->sh_addr); 506 W.printHex("Offset", Sec->sh_offset); 507 W.printNumber("Link", Sec->sh_link); 508 509 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 510 StringRef StrTable = Dumper->getDynamicStringTable(); 511 512 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 513 ListScope Syms(W, "Symbols"); 514 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 515 DictScope S(W, "Symbol"); 516 std::string FullSymbolName = 517 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 518 W.printNumber("Version", *P); 519 W.printString("Name", FullSymbolName); 520 P += sizeof(typename ELFO::Elf_Half); 521 } 522 } 523 524 template <typename ELFO, class ELFT> 525 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 526 const ELFO *Obj, 527 const typename ELFO::Elf_Shdr *Sec, 528 StreamWriter &W) { 529 DictScope SD(W, "Version definition"); 530 if (!Sec) 531 return; 532 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 533 W.printNumber("Section Name", Name, Sec->sh_name); 534 W.printHex("Address", Sec->sh_addr); 535 W.printHex("Offset", Sec->sh_offset); 536 W.printNumber("Link", Sec->sh_link); 537 538 unsigned verdef_entries = 0; 539 // The number of entries in the section SHT_GNU_verdef 540 // is determined by DT_VERDEFNUM tag. 541 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 542 if (Dyn.d_tag == DT_VERDEFNUM) 543 verdef_entries = Dyn.d_un.d_val; 544 } 545 const uint8_t *SecStartAddress = 546 (const uint8_t *)Obj->base() + Sec->sh_offset; 547 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 548 const uint8_t *P = SecStartAddress; 549 const typename ELFO::Elf_Shdr *StrTab = 550 unwrapOrError(Obj->getSection(Sec->sh_link)); 551 552 ListScope Entries(W, "Entries"); 553 for (unsigned i = 0; i < verdef_entries; ++i) { 554 if (P + sizeof(typename ELFO::Elf_Verdef) > SecEndAddress) 555 report_fatal_error("invalid offset in the section"); 556 auto *VD = reinterpret_cast<const typename ELFO::Elf_Verdef *>(P); 557 DictScope Entry(W, "Entry"); 558 W.printHex("Offset", (uintptr_t)P - (uintptr_t)SecStartAddress); 559 W.printNumber("Rev", VD->vd_version); 560 // FIXME: print something more readable. 561 W.printNumber("Flags", VD->vd_flags); 562 W.printNumber("Index", VD->vd_ndx); 563 W.printNumber("Cnt", VD->vd_cnt); 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_1(XCORE_SHF_CP_SECTION), 996 ENUM_ENT_1(XCORE_SHF_DP_SECTION), 997 }; 998 999 static const EnumEntry<unsigned> ElfAMDGPUSectionFlags[] = { 1000 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_GLOBAL), 1001 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_READONLY), 1002 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_CODE), 1003 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_AGENT) 1004 }; 1005 1006 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1007 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1008 }; 1009 1010 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1011 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1012 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1013 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1014 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1015 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1016 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1017 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1018 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1019 }; 1020 1021 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1022 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1023 }; 1024 1025 static std::string getGNUFlags(uint64_t Flags) { 1026 std::string Str; 1027 for (auto Entry : ElfSectionFlags) { 1028 uint64_t Flag = Entry.Value & Flags; 1029 Flags &= ~Entry.Value; 1030 switch (Flag) { 1031 case ELF::SHF_WRITE: 1032 case ELF::SHF_ALLOC: 1033 case ELF::SHF_EXECINSTR: 1034 case ELF::SHF_MERGE: 1035 case ELF::SHF_STRINGS: 1036 case ELF::SHF_INFO_LINK: 1037 case ELF::SHF_LINK_ORDER: 1038 case ELF::SHF_OS_NONCONFORMING: 1039 case ELF::SHF_GROUP: 1040 case ELF::SHF_TLS: 1041 case ELF::SHF_EXCLUDE: 1042 Str += Entry.AltName; 1043 break; 1044 default: 1045 if (Flags & ELF::SHF_MASKOS) 1046 Str += "o"; 1047 else if (Flags & ELF::SHF_MASKPROC) 1048 Str += "p"; 1049 else if (Flag) 1050 Str += "x"; 1051 } 1052 } 1053 return Str; 1054 } 1055 1056 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1057 // Check potentially overlapped processor-specific 1058 // program header type. 1059 switch (Arch) { 1060 case ELF::EM_AMDGPU: 1061 switch (Type) { 1062 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1063 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1064 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1065 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1066 } 1067 case ELF::EM_ARM: 1068 switch (Type) { 1069 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1070 } 1071 case ELF::EM_MIPS: 1072 case ELF::EM_MIPS_RS3_LE: 1073 switch (Type) { 1074 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1075 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1076 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1077 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1078 } 1079 } 1080 1081 switch (Type) { 1082 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1083 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1084 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1085 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1086 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1087 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1088 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1089 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1090 1091 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1092 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1093 1094 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1095 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1096 default: return ""; 1097 } 1098 } 1099 1100 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1101 switch (Type) { 1102 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1103 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1104 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1105 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1106 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1107 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1108 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1109 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1110 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1111 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1112 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1113 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1114 default: 1115 // All machine specific PT_* types 1116 switch (Arch) { 1117 case ELF::EM_AMDGPU: 1118 switch (Type) { 1119 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1120 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1121 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1122 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1123 } 1124 return ""; 1125 case ELF::EM_ARM: 1126 if (Type == ELF::PT_ARM_EXIDX) 1127 return "EXIDX"; 1128 return ""; 1129 case ELF::EM_MIPS: 1130 case ELF::EM_MIPS_RS3_LE: 1131 switch (Type) { 1132 case PT_MIPS_REGINFO: 1133 return "REGINFO"; 1134 case PT_MIPS_RTPROC: 1135 return "RTPROC"; 1136 case PT_MIPS_OPTIONS: 1137 return "OPTIONS"; 1138 case PT_MIPS_ABIFLAGS: 1139 return "ABIFLAGS"; 1140 } 1141 return ""; 1142 } 1143 } 1144 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1145 } 1146 1147 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1148 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1149 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1150 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1151 }; 1152 1153 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1154 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1155 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1156 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1157 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1158 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1159 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1160 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1161 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1162 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1163 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1164 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1165 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1166 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1167 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1168 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1169 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1170 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1171 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1172 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1173 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1174 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1175 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1176 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1177 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1178 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1179 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1180 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1181 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1182 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1183 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1184 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1185 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1186 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1187 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1188 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1189 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1190 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1191 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1192 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1193 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1194 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1195 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1196 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1197 }; 1198 1199 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1200 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1201 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1202 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1203 }; 1204 1205 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1206 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1207 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1208 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1209 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1210 }; 1211 1212 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1213 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1214 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1215 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1216 }; 1217 1218 template <typename ELFT> 1219 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer) 1220 : ObjDumper(Writer), Obj(Obj) { 1221 1222 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1223 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 1224 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1225 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1226 continue; 1227 } 1228 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1229 continue; 1230 LoadSegments.push_back(&Phdr); 1231 } 1232 1233 for (const Elf_Shdr &Sec : Obj->sections()) { 1234 switch (Sec.sh_type) { 1235 case ELF::SHT_SYMTAB: 1236 if (DotSymtabSec != nullptr) 1237 reportError("Multilpe SHT_SYMTAB"); 1238 DotSymtabSec = &Sec; 1239 break; 1240 case ELF::SHT_DYNSYM: 1241 if (DynSymRegion.Size) 1242 reportError("Multilpe SHT_DYNSYM"); 1243 DynSymRegion = createDRIFrom(&Sec); 1244 // This is only used (if Elf_Shdr present)for naming section in GNU style 1245 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1246 break; 1247 case ELF::SHT_SYMTAB_SHNDX: 1248 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1249 break; 1250 case ELF::SHT_GNU_versym: 1251 if (dot_gnu_version_sec != nullptr) 1252 reportError("Multiple SHT_GNU_versym"); 1253 dot_gnu_version_sec = &Sec; 1254 break; 1255 case ELF::SHT_GNU_verdef: 1256 if (dot_gnu_version_d_sec != nullptr) 1257 reportError("Multiple SHT_GNU_verdef"); 1258 dot_gnu_version_d_sec = &Sec; 1259 break; 1260 case ELF::SHT_GNU_verneed: 1261 if (dot_gnu_version_r_sec != nullptr) 1262 reportError("Multilpe SHT_GNU_verneed"); 1263 dot_gnu_version_r_sec = &Sec; 1264 break; 1265 } 1266 } 1267 1268 parseDynamicTable(LoadSegments); 1269 1270 if (opts::Output == opts::GNU) 1271 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1272 else 1273 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1274 } 1275 1276 template <typename ELFT> 1277 void ELFDumper<ELFT>::parseDynamicTable( 1278 ArrayRef<const Elf_Phdr *> LoadSegments) { 1279 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1280 const Elf_Phdr *const *I = std::upper_bound( 1281 LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>); 1282 if (I == LoadSegments.begin()) 1283 report_fatal_error("Virtual address is not in any segment"); 1284 --I; 1285 const Elf_Phdr &Phdr = **I; 1286 uint64_t Delta = VAddr - Phdr.p_vaddr; 1287 if (Delta >= Phdr.p_filesz) 1288 report_fatal_error("Virtual address is not in any segment"); 1289 return Obj->base() + Phdr.p_offset + Delta; 1290 }; 1291 1292 uint64_t SONameOffset = 0; 1293 const char *StringTableBegin = nullptr; 1294 uint64_t StringTableSize = 0; 1295 for (const Elf_Dyn &Dyn : dynamic_table()) { 1296 switch (Dyn.d_tag) { 1297 case ELF::DT_HASH: 1298 HashTable = 1299 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1300 break; 1301 case ELF::DT_GNU_HASH: 1302 GnuHashTable = 1303 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1304 break; 1305 case ELF::DT_STRTAB: 1306 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1307 break; 1308 case ELF::DT_STRSZ: 1309 StringTableSize = Dyn.getVal(); 1310 break; 1311 case ELF::DT_SYMTAB: 1312 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1313 DynSymRegion.EntSize = sizeof(Elf_Sym); 1314 break; 1315 case ELF::DT_RELA: 1316 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1317 break; 1318 case ELF::DT_RELASZ: 1319 DynRelaRegion.Size = Dyn.getVal(); 1320 break; 1321 case ELF::DT_RELAENT: 1322 DynRelaRegion.EntSize = Dyn.getVal(); 1323 break; 1324 case ELF::DT_SONAME: 1325 SONameOffset = Dyn.getVal(); 1326 break; 1327 case ELF::DT_REL: 1328 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1329 break; 1330 case ELF::DT_RELSZ: 1331 DynRelRegion.Size = Dyn.getVal(); 1332 break; 1333 case ELF::DT_RELENT: 1334 DynRelRegion.EntSize = Dyn.getVal(); 1335 break; 1336 case ELF::DT_PLTREL: 1337 if (Dyn.getVal() == DT_REL) 1338 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1339 else if (Dyn.getVal() == DT_RELA) 1340 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1341 else 1342 reportError(Twine("unknown DT_PLTREL value of ") + 1343 Twine((uint64_t)Dyn.getVal())); 1344 break; 1345 case ELF::DT_JMPREL: 1346 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1347 break; 1348 case ELF::DT_PLTRELSZ: 1349 DynPLTRelRegion.Size = Dyn.getVal(); 1350 break; 1351 } 1352 } 1353 if (StringTableBegin) 1354 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1355 if (SONameOffset) 1356 SOName = getDynamicString(SONameOffset); 1357 } 1358 1359 template <typename ELFT> 1360 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1361 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1362 } 1363 1364 template <typename ELFT> 1365 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1366 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1367 } 1368 1369 template<class ELFT> 1370 void ELFDumper<ELFT>::printFileHeaders() { 1371 ELFDumperStyle->printFileHeaders(Obj); 1372 } 1373 1374 template<class ELFT> 1375 void ELFDumper<ELFT>::printSections() { 1376 ELFDumperStyle->printSections(Obj); 1377 } 1378 1379 template<class ELFT> 1380 void ELFDumper<ELFT>::printRelocations() { 1381 ELFDumperStyle->printRelocations(Obj); 1382 } 1383 1384 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1385 ELFDumperStyle->printProgramHeaders(Obj); 1386 } 1387 1388 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1389 ELFDumperStyle->printDynamicRelocations(Obj); 1390 } 1391 1392 template<class ELFT> 1393 void ELFDumper<ELFT>::printSymbols() { 1394 ELFDumperStyle->printSymbols(Obj); 1395 } 1396 1397 template<class ELFT> 1398 void ELFDumper<ELFT>::printDynamicSymbols() { 1399 ELFDumperStyle->printDynamicSymbols(Obj); 1400 } 1401 1402 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1403 ELFDumperStyle->printHashHistogram(Obj); 1404 } 1405 #define LLVM_READOBJ_TYPE_CASE(name) \ 1406 case DT_##name: return #name 1407 1408 static const char *getTypeString(uint64_t Type) { 1409 switch (Type) { 1410 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1411 LLVM_READOBJ_TYPE_CASE(DEBUG); 1412 LLVM_READOBJ_TYPE_CASE(FINI); 1413 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1414 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1415 LLVM_READOBJ_TYPE_CASE(FLAGS); 1416 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1417 LLVM_READOBJ_TYPE_CASE(HASH); 1418 LLVM_READOBJ_TYPE_CASE(INIT); 1419 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1420 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1421 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1422 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1423 LLVM_READOBJ_TYPE_CASE(JMPREL); 1424 LLVM_READOBJ_TYPE_CASE(NEEDED); 1425 LLVM_READOBJ_TYPE_CASE(NULL); 1426 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1427 LLVM_READOBJ_TYPE_CASE(PLTREL); 1428 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1429 LLVM_READOBJ_TYPE_CASE(REL); 1430 LLVM_READOBJ_TYPE_CASE(RELA); 1431 LLVM_READOBJ_TYPE_CASE(RELENT); 1432 LLVM_READOBJ_TYPE_CASE(RELSZ); 1433 LLVM_READOBJ_TYPE_CASE(RELAENT); 1434 LLVM_READOBJ_TYPE_CASE(RELASZ); 1435 LLVM_READOBJ_TYPE_CASE(RPATH); 1436 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1437 LLVM_READOBJ_TYPE_CASE(SONAME); 1438 LLVM_READOBJ_TYPE_CASE(STRSZ); 1439 LLVM_READOBJ_TYPE_CASE(STRTAB); 1440 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1441 LLVM_READOBJ_TYPE_CASE(SYMENT); 1442 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1443 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1444 LLVM_READOBJ_TYPE_CASE(VERDEF); 1445 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1446 LLVM_READOBJ_TYPE_CASE(VERNEED); 1447 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1448 LLVM_READOBJ_TYPE_CASE(VERSYM); 1449 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1450 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1451 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1452 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1453 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1454 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1455 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1456 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1457 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1458 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1459 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1460 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1461 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1462 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1463 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1464 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1465 default: return "unknown"; 1466 } 1467 } 1468 1469 #undef LLVM_READOBJ_TYPE_CASE 1470 1471 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1472 { #enum, prefix##_##enum } 1473 1474 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1475 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1476 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1477 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1478 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1479 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1480 }; 1481 1482 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1483 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1484 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1485 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1486 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1487 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1488 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1489 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1490 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1491 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1492 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1493 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1494 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1495 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1496 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1497 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1498 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1499 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1500 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1501 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1502 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1503 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1504 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1505 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1506 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1507 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1508 }; 1509 1510 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1511 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1512 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1513 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1514 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1515 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1516 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1517 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1518 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1519 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1520 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1521 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1522 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1523 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1524 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1525 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1526 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1527 }; 1528 1529 #undef LLVM_READOBJ_DT_FLAG_ENT 1530 1531 template <typename T, typename TFlag> 1532 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1533 typedef EnumEntry<TFlag> FlagEntry; 1534 typedef SmallVector<FlagEntry, 10> FlagVector; 1535 FlagVector SetFlags; 1536 1537 for (const auto &Flag : Flags) { 1538 if (Flag.Value == 0) 1539 continue; 1540 1541 if ((Value & Flag.Value) == Flag.Value) 1542 SetFlags.push_back(Flag); 1543 } 1544 1545 for (const auto &Flag : SetFlags) { 1546 OS << Flag.Name << " "; 1547 } 1548 } 1549 1550 template <class ELFT> 1551 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1552 if (Value >= DynamicStringTable.size()) 1553 reportError("Invalid dynamic string table reference"); 1554 return StringRef(DynamicStringTable.data() + Value); 1555 } 1556 1557 template <class ELFT> 1558 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1559 raw_ostream &OS = W.getOStream(); 1560 switch (Type) { 1561 case DT_PLTREL: 1562 if (Value == DT_REL) { 1563 OS << "REL"; 1564 break; 1565 } else if (Value == DT_RELA) { 1566 OS << "RELA"; 1567 break; 1568 } 1569 // Fallthrough. 1570 case DT_PLTGOT: 1571 case DT_HASH: 1572 case DT_STRTAB: 1573 case DT_SYMTAB: 1574 case DT_RELA: 1575 case DT_INIT: 1576 case DT_FINI: 1577 case DT_REL: 1578 case DT_JMPREL: 1579 case DT_INIT_ARRAY: 1580 case DT_FINI_ARRAY: 1581 case DT_PREINIT_ARRAY: 1582 case DT_DEBUG: 1583 case DT_VERDEF: 1584 case DT_VERNEED: 1585 case DT_VERSYM: 1586 case DT_GNU_HASH: 1587 case DT_NULL: 1588 case DT_MIPS_BASE_ADDRESS: 1589 case DT_MIPS_GOTSYM: 1590 case DT_MIPS_RLD_MAP: 1591 case DT_MIPS_RLD_MAP_REL: 1592 case DT_MIPS_PLTGOT: 1593 case DT_MIPS_OPTIONS: 1594 OS << format("0x%" PRIX64, Value); 1595 break; 1596 case DT_RELACOUNT: 1597 case DT_RELCOUNT: 1598 case DT_VERDEFNUM: 1599 case DT_VERNEEDNUM: 1600 case DT_MIPS_RLD_VERSION: 1601 case DT_MIPS_LOCAL_GOTNO: 1602 case DT_MIPS_SYMTABNO: 1603 case DT_MIPS_UNREFEXTNO: 1604 OS << Value; 1605 break; 1606 case DT_PLTRELSZ: 1607 case DT_RELASZ: 1608 case DT_RELAENT: 1609 case DT_STRSZ: 1610 case DT_SYMENT: 1611 case DT_RELSZ: 1612 case DT_RELENT: 1613 case DT_INIT_ARRAYSZ: 1614 case DT_FINI_ARRAYSZ: 1615 case DT_PREINIT_ARRAYSZ: 1616 OS << Value << " (bytes)"; 1617 break; 1618 case DT_NEEDED: 1619 OS << "SharedLibrary (" << getDynamicString(Value) << ")"; 1620 break; 1621 case DT_SONAME: 1622 OS << "LibrarySoname (" << getDynamicString(Value) << ")"; 1623 break; 1624 case DT_RPATH: 1625 case DT_RUNPATH: 1626 OS << getDynamicString(Value); 1627 break; 1628 case DT_MIPS_FLAGS: 1629 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1630 break; 1631 case DT_FLAGS: 1632 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1633 break; 1634 case DT_FLAGS_1: 1635 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1636 break; 1637 default: 1638 OS << format("0x%" PRIX64, Value); 1639 break; 1640 } 1641 } 1642 1643 template<class ELFT> 1644 void ELFDumper<ELFT>::printUnwindInfo() { 1645 W.startLine() << "UnwindInfo not implemented.\n"; 1646 } 1647 1648 namespace { 1649 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1650 const unsigned Machine = Obj->getHeader()->e_machine; 1651 if (Machine == EM_ARM) { 1652 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1653 W, Obj, DotSymtabSec); 1654 return Ctx.PrintUnwindInformation(); 1655 } 1656 W.startLine() << "UnwindInfo not implemented.\n"; 1657 } 1658 } 1659 1660 template<class ELFT> 1661 void ELFDumper<ELFT>::printDynamicTable() { 1662 auto I = dynamic_table().begin(); 1663 auto E = dynamic_table().end(); 1664 1665 if (I == E) 1666 return; 1667 1668 --E; 1669 while (I != E && E->getTag() == ELF::DT_NULL) 1670 --E; 1671 if (E->getTag() != ELF::DT_NULL) 1672 ++E; 1673 ++E; 1674 1675 ptrdiff_t Total = std::distance(I, E); 1676 if (Total == 0) 1677 return; 1678 1679 raw_ostream &OS = W.getOStream(); 1680 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1681 1682 bool Is64 = ELFT::Is64Bits; 1683 1684 W.startLine() 1685 << " Tag" << (Is64 ? " " : " ") << "Type" 1686 << " " << "Name/Value\n"; 1687 while (I != E) { 1688 const Elf_Dyn &Entry = *I; 1689 uintX_t Tag = Entry.getTag(); 1690 ++I; 1691 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, true) << " " 1692 << format("%-21s", getTypeString(Tag)); 1693 printValue(Tag, Entry.getVal()); 1694 OS << "\n"; 1695 } 1696 1697 W.startLine() << "]\n"; 1698 } 1699 1700 template<class ELFT> 1701 void ELFDumper<ELFT>::printNeededLibraries() { 1702 ListScope D(W, "NeededLibraries"); 1703 1704 typedef std::vector<StringRef> LibsTy; 1705 LibsTy Libs; 1706 1707 for (const auto &Entry : dynamic_table()) 1708 if (Entry.d_tag == ELF::DT_NEEDED) 1709 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1710 1711 std::stable_sort(Libs.begin(), Libs.end()); 1712 1713 for (const auto &L : Libs) { 1714 outs() << " " << L << "\n"; 1715 } 1716 } 1717 1718 1719 template <typename ELFT> 1720 void ELFDumper<ELFT>::printHashTable() { 1721 DictScope D(W, "HashTable"); 1722 if (!HashTable) 1723 return; 1724 W.printNumber("Num Buckets", HashTable->nbucket); 1725 W.printNumber("Num Chains", HashTable->nchain); 1726 W.printList("Buckets", HashTable->buckets()); 1727 W.printList("Chains", HashTable->chains()); 1728 } 1729 1730 template <typename ELFT> 1731 void ELFDumper<ELFT>::printGnuHashTable() { 1732 DictScope D(W, "GnuHashTable"); 1733 if (!GnuHashTable) 1734 return; 1735 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1736 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1737 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1738 W.printNumber("Shift Count", GnuHashTable->shift2); 1739 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1740 W.printList("Buckets", GnuHashTable->buckets()); 1741 Elf_Sym_Range Syms = dynamic_symbols(); 1742 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1743 if (!NumSyms) 1744 reportError("No dynamic symbol section"); 1745 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1746 } 1747 1748 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1749 outs() << "LoadName: " << SOName << '\n'; 1750 } 1751 1752 template <class ELFT> 1753 void ELFDumper<ELFT>::printAttributes() { 1754 W.startLine() << "Attributes not implemented.\n"; 1755 } 1756 1757 namespace { 1758 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1759 if (Obj->getHeader()->e_machine != EM_ARM) { 1760 W.startLine() << "Attributes not implemented.\n"; 1761 return; 1762 } 1763 1764 DictScope BA(W, "BuildAttributes"); 1765 for (const ELFO::Elf_Shdr &Sec : Obj->sections()) { 1766 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1767 continue; 1768 1769 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1770 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1771 errs() << "unrecognised FormatVersion: 0x" << utohexstr(Contents[0]) 1772 << '\n'; 1773 continue; 1774 } 1775 1776 W.printHex("FormatVersion", Contents[0]); 1777 if (Contents.size() == 1) 1778 continue; 1779 1780 ARMAttributeParser(W).Parse(Contents); 1781 } 1782 } 1783 } 1784 1785 namespace { 1786 template <class ELFT> class MipsGOTParser { 1787 public: 1788 typedef object::ELFFile<ELFT> ELFO; 1789 typedef typename ELFO::Elf_Shdr Elf_Shdr; 1790 typedef typename ELFO::Elf_Sym Elf_Sym; 1791 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 1792 typedef typename ELFO::Elf_Addr GOTEntry; 1793 typedef typename ELFO::Elf_Rel Elf_Rel; 1794 typedef typename ELFO::Elf_Rela Elf_Rela; 1795 1796 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1797 Elf_Dyn_Range DynTable, StreamWriter &W); 1798 1799 void parseGOT(); 1800 void parsePLT(); 1801 1802 private: 1803 ELFDumper<ELFT> *Dumper; 1804 const ELFO *Obj; 1805 StreamWriter &W; 1806 llvm::Optional<uint64_t> DtPltGot; 1807 llvm::Optional<uint64_t> DtLocalGotNum; 1808 llvm::Optional<uint64_t> DtGotSym; 1809 llvm::Optional<uint64_t> DtMipsPltGot; 1810 llvm::Optional<uint64_t> DtJmpRel; 1811 1812 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1813 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1814 1815 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1816 const GOTEntry *It); 1817 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1818 const GOTEntry *It, const Elf_Sym *Sym, 1819 StringRef StrTable, bool IsDynamic); 1820 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1821 const GOTEntry *It, StringRef Purpose); 1822 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1823 const GOTEntry *It, StringRef StrTable, 1824 const Elf_Sym *Sym); 1825 }; 1826 } 1827 1828 template <class ELFT> 1829 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1830 Elf_Dyn_Range DynTable, StreamWriter &W) 1831 : Dumper(Dumper), Obj(Obj), W(W) { 1832 for (const auto &Entry : DynTable) { 1833 switch (Entry.getTag()) { 1834 case ELF::DT_PLTGOT: 1835 DtPltGot = Entry.getVal(); 1836 break; 1837 case ELF::DT_MIPS_LOCAL_GOTNO: 1838 DtLocalGotNum = Entry.getVal(); 1839 break; 1840 case ELF::DT_MIPS_GOTSYM: 1841 DtGotSym = Entry.getVal(); 1842 break; 1843 case ELF::DT_MIPS_PLTGOT: 1844 DtMipsPltGot = Entry.getVal(); 1845 break; 1846 case ELF::DT_JMPREL: 1847 DtJmpRel = Entry.getVal(); 1848 break; 1849 } 1850 } 1851 } 1852 1853 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1854 // See "Global Offset Table" in Chapter 5 in the following document 1855 // for detailed GOT description. 1856 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1857 if (!DtPltGot) { 1858 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1859 return; 1860 } 1861 if (!DtLocalGotNum) { 1862 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1863 return; 1864 } 1865 if (!DtGotSym) { 1866 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1867 return; 1868 } 1869 1870 StringRef StrTable = Dumper->getDynamicStringTable(); 1871 const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin(); 1872 const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end(); 1873 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1874 1875 if (*DtGotSym > DynSymTotal) 1876 report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols"); 1877 1878 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1879 1880 if (*DtLocalGotNum + GlobalGotNum == 0) { 1881 W.startLine() << "GOT is empty.\n"; 1882 return; 1883 } 1884 1885 const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot); 1886 if (!GOTShdr) 1887 report_fatal_error("There is no not empty GOT section at 0x" + 1888 Twine::utohexstr(*DtPltGot)); 1889 1890 ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr)); 1891 1892 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT)) 1893 report_fatal_error("Number of GOT entries exceeds the size of GOT section"); 1894 1895 const GOTEntry *GotBegin = makeGOTIter(GOT, 0); 1896 const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum); 1897 const GOTEntry *It = GotBegin; 1898 1899 DictScope GS(W, "Primary GOT"); 1900 1901 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 1902 { 1903 ListScope RS(W, "Reserved entries"); 1904 1905 { 1906 DictScope D(W, "Entry"); 1907 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1908 W.printString("Purpose", StringRef("Lazy resolver")); 1909 } 1910 1911 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 1912 DictScope D(W, "Entry"); 1913 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1914 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 1915 } 1916 } 1917 { 1918 ListScope LS(W, "Local entries"); 1919 for (; It != GotLocalEnd; ++It) { 1920 DictScope D(W, "Entry"); 1921 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 1922 } 1923 } 1924 { 1925 ListScope GS(W, "Global entries"); 1926 1927 const GOTEntry *GotGlobalEnd = 1928 makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum); 1929 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 1930 for (; It != GotGlobalEnd; ++It) { 1931 DictScope D(W, "Entry"); 1932 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable, 1933 true); 1934 } 1935 } 1936 1937 std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum; 1938 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 1939 } 1940 1941 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 1942 if (!DtMipsPltGot) { 1943 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 1944 return; 1945 } 1946 if (!DtJmpRel) { 1947 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 1948 return; 1949 } 1950 1951 const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 1952 if (!PLTShdr) 1953 report_fatal_error("There is no not empty PLTGOT section at 0x " + 1954 Twine::utohexstr(*DtMipsPltGot)); 1955 ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr)); 1956 1957 const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel); 1958 if (!PLTRelShdr) 1959 report_fatal_error("There is no not empty RELPLT section at 0x" + 1960 Twine::utohexstr(*DtJmpRel)); 1961 const Elf_Shdr *SymTable = 1962 unwrapOrError(Obj->getSection(PLTRelShdr->sh_link)); 1963 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable)); 1964 1965 const GOTEntry *PLTBegin = makeGOTIter(PLT, 0); 1966 const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT)); 1967 const GOTEntry *It = PLTBegin; 1968 1969 DictScope GS(W, "PLT GOT"); 1970 { 1971 ListScope RS(W, "Reserved entries"); 1972 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 1973 if (It != PLTEnd) 1974 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 1975 } 1976 { 1977 ListScope GS(W, "Entries"); 1978 1979 switch (PLTRelShdr->sh_type) { 1980 case ELF::SHT_REL: 1981 for (const Elf_Rel *RI = Obj->rel_begin(PLTRelShdr), 1982 *RE = Obj->rel_end(PLTRelShdr); 1983 RI != RE && It != PLTEnd; ++RI, ++It) { 1984 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 1985 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 1986 } 1987 break; 1988 case ELF::SHT_RELA: 1989 for (const Elf_Rela *RI = Obj->rela_begin(PLTRelShdr), 1990 *RE = Obj->rela_end(PLTRelShdr); 1991 RI != RE && It != PLTEnd; ++RI, ++It) { 1992 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 1993 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 1994 } 1995 break; 1996 } 1997 } 1998 } 1999 2000 template <class ELFT> 2001 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 2002 return GOT.size() / sizeof(GOTEntry); 2003 } 2004 2005 template <class ELFT> 2006 const typename MipsGOTParser<ELFT>::GOTEntry * 2007 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 2008 const char *Data = reinterpret_cast<const char *>(GOT.data()); 2009 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 2010 } 2011 2012 template <class ELFT> 2013 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 2014 const GOTEntry *BeginIt, 2015 const GOTEntry *It) { 2016 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2017 W.printHex("Address", GotAddr + Offset); 2018 W.printNumber("Access", Offset - 0x7ff0); 2019 W.printHex("Initial", *It); 2020 } 2021 2022 template <class ELFT> 2023 void MipsGOTParser<ELFT>::printGlobalGotEntry( 2024 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 2025 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 2026 printGotEntry(GotAddr, BeginIt, It); 2027 2028 W.printHex("Value", Sym->st_value); 2029 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2030 2031 unsigned SectionIndex = 0; 2032 StringRef SectionName; 2033 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2034 Dumper->getShndxTable(), SectionName, SectionIndex); 2035 W.printHex("Section", SectionName, SectionIndex); 2036 2037 std::string FullSymbolName = 2038 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 2039 W.printNumber("Name", FullSymbolName, Sym->st_name); 2040 } 2041 2042 template <class ELFT> 2043 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2044 const GOTEntry *BeginIt, 2045 const GOTEntry *It, StringRef Purpose) { 2046 DictScope D(W, "Entry"); 2047 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2048 W.printHex("Address", PLTAddr + Offset); 2049 W.printHex("Initial", *It); 2050 W.printString("Purpose", Purpose); 2051 } 2052 2053 template <class ELFT> 2054 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2055 const GOTEntry *BeginIt, 2056 const GOTEntry *It, StringRef StrTable, 2057 const Elf_Sym *Sym) { 2058 DictScope D(W, "Entry"); 2059 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2060 W.printHex("Address", PLTAddr + Offset); 2061 W.printHex("Initial", *It); 2062 W.printHex("Value", Sym->st_value); 2063 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2064 2065 unsigned SectionIndex = 0; 2066 StringRef SectionName; 2067 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2068 Dumper->getShndxTable(), SectionName, SectionIndex); 2069 W.printHex("Section", SectionName, SectionIndex); 2070 2071 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 2072 W.printNumber("Name", FullSymbolName, Sym->st_name); 2073 } 2074 2075 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2076 if (Obj->getHeader()->e_machine != EM_MIPS) { 2077 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2078 return; 2079 } 2080 2081 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2082 GOTParser.parseGOT(); 2083 GOTParser.parsePLT(); 2084 } 2085 2086 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2087 {"None", Mips::AFL_EXT_NONE}, 2088 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2089 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2090 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2091 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2092 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2093 {"LSI R4010", Mips::AFL_EXT_4010}, 2094 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2095 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2096 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2097 {"MIPS R4650", Mips::AFL_EXT_4650}, 2098 {"MIPS R5900", Mips::AFL_EXT_5900}, 2099 {"MIPS R10000", Mips::AFL_EXT_10000}, 2100 {"NEC VR4100", Mips::AFL_EXT_4100}, 2101 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2102 {"NEC VR4120", Mips::AFL_EXT_4120}, 2103 {"NEC VR5400", Mips::AFL_EXT_5400}, 2104 {"NEC VR5500", Mips::AFL_EXT_5500}, 2105 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2106 {"Toshiba R3900", Mips::AFL_EXT_3900} 2107 }; 2108 2109 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2110 {"DSP", Mips::AFL_ASE_DSP}, 2111 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2112 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2113 {"MCU", Mips::AFL_ASE_MCU}, 2114 {"MDMX", Mips::AFL_ASE_MDMX}, 2115 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2116 {"MT", Mips::AFL_ASE_MT}, 2117 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2118 {"VZ", Mips::AFL_ASE_VIRT}, 2119 {"MSA", Mips::AFL_ASE_MSA}, 2120 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2121 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2122 {"XPA", Mips::AFL_ASE_XPA} 2123 }; 2124 2125 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2126 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2127 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2128 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2129 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2130 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2131 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2132 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2133 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2134 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2135 Mips::Val_GNU_MIPS_ABI_FP_64A} 2136 }; 2137 2138 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2139 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2140 }; 2141 2142 static int getMipsRegisterSize(uint8_t Flag) { 2143 switch (Flag) { 2144 case Mips::AFL_REG_NONE: 2145 return 0; 2146 case Mips::AFL_REG_32: 2147 return 32; 2148 case Mips::AFL_REG_64: 2149 return 64; 2150 case Mips::AFL_REG_128: 2151 return 128; 2152 default: 2153 return -1; 2154 } 2155 } 2156 2157 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2158 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2159 if (!Shdr) { 2160 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2161 return; 2162 } 2163 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2164 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2165 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2166 return; 2167 } 2168 2169 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2170 2171 raw_ostream &OS = W.getOStream(); 2172 DictScope GS(W, "MIPS ABI Flags"); 2173 2174 W.printNumber("Version", Flags->version); 2175 W.startLine() << "ISA: "; 2176 if (Flags->isa_rev <= 1) 2177 OS << format("MIPS%u", Flags->isa_level); 2178 else 2179 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2180 OS << "\n"; 2181 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2182 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2183 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2184 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2185 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2186 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2187 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2188 W.printHex("Flags 2", Flags->flags2); 2189 } 2190 2191 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2192 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2193 if (!Shdr) { 2194 W.startLine() << "There is no .reginfo section in the file.\n"; 2195 return; 2196 } 2197 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2198 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2199 W.startLine() << "The .reginfo section has a wrong size.\n"; 2200 return; 2201 } 2202 2203 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2204 2205 DictScope GS(W, "MIPS RegInfo"); 2206 W.printHex("GP", Reginfo->ri_gp_value); 2207 W.printHex("General Mask", Reginfo->ri_gprmask); 2208 W.printHex("Co-Proc Mask0", Reginfo->ri_cprmask[0]); 2209 W.printHex("Co-Proc Mask1", Reginfo->ri_cprmask[1]); 2210 W.printHex("Co-Proc Mask2", Reginfo->ri_cprmask[2]); 2211 W.printHex("Co-Proc Mask3", Reginfo->ri_cprmask[3]); 2212 } 2213 2214 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2215 const Elf_Shdr *StackMapSection = nullptr; 2216 for (const auto &Sec : Obj->sections()) { 2217 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2218 if (Name == ".llvm_stackmaps") { 2219 StackMapSection = &Sec; 2220 break; 2221 } 2222 } 2223 2224 if (!StackMapSection) 2225 return; 2226 2227 StringRef StackMapContents; 2228 ArrayRef<uint8_t> StackMapContentsArray = 2229 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2230 2231 prettyPrintStackMap(llvm::outs(), StackMapV1Parser<ELFT::TargetEndianness>( 2232 StackMapContentsArray)); 2233 } 2234 2235 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2236 ELFDumperStyle->printGroupSections(Obj); 2237 } 2238 2239 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2240 StringRef Str2) { 2241 OS.PadToColumn(2u); 2242 OS << Str1; 2243 OS.PadToColumn(37u); 2244 OS << Str2 << "\n"; 2245 OS.flush(); 2246 } 2247 2248 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2249 const Elf_Ehdr *e = Obj->getHeader(); 2250 OS << "ELF Header:\n"; 2251 OS << " Magic: "; 2252 std::string Str; 2253 for (int i = 0; i < ELF::EI_NIDENT; i++) 2254 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2255 OS << "\n"; 2256 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2257 printFields(OS, "Class:", Str); 2258 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2259 printFields(OS, "Data:", Str); 2260 OS.PadToColumn(2u); 2261 OS << "Version:"; 2262 OS.PadToColumn(37u); 2263 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2264 if (e->e_version == ELF::EV_CURRENT) 2265 OS << " (current)"; 2266 OS << "\n"; 2267 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2268 printFields(OS, "OS/ABI:", Str); 2269 Str = "0x" + to_hexString(e->e_version); 2270 Str = to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2271 printFields(OS, "ABI Version:", Str); 2272 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2273 printFields(OS, "Type:", Str); 2274 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2275 printFields(OS, "Machine:", Str); 2276 Str = "0x" + to_hexString(e->e_version); 2277 printFields(OS, "Version:", Str); 2278 Str = "0x" + to_hexString(e->e_entry); 2279 printFields(OS, "Entry point address:", Str); 2280 Str = to_string(e->e_phoff) + " (bytes into file)"; 2281 printFields(OS, "Start of program headers:", Str); 2282 Str = to_string(e->e_shoff) + " (bytes into file)"; 2283 printFields(OS, "Start of section headers:", Str); 2284 Str = "0x" + to_hexString(e->e_flags); 2285 printFields(OS, "Flags:", Str); 2286 Str = to_string(e->e_ehsize) + " (bytes)"; 2287 printFields(OS, "Size of this header:", Str); 2288 Str = to_string(e->e_phentsize) + " (bytes)"; 2289 printFields(OS, "Size of program headers:", Str); 2290 Str = to_string(e->e_phnum); 2291 printFields(OS, "Number of program headers:", Str); 2292 Str = to_string(e->e_shentsize) + " (bytes)"; 2293 printFields(OS, "Size of section headers:", Str); 2294 Str = to_string(e->e_shnum); 2295 printFields(OS, "Number of section headers:", Str); 2296 Str = to_string(e->e_shstrndx); 2297 printFields(OS, "Section header string table index:", Str); 2298 } 2299 2300 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2301 uint32_t SectionIndex = 0; 2302 bool HasGroups = false; 2303 for (const Elf_Shdr &Sec : Obj->sections()) { 2304 if (Sec.sh_type == ELF::SHT_GROUP) { 2305 HasGroups = true; 2306 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2307 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2308 const Elf_Sym *Signature = 2309 Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 2310 ArrayRef<Elf_Word> Data = unwrapOrError( 2311 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2312 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2313 OS << "\n" << getGroupType(Data[0]) << " group section [" 2314 << format_decimal(SectionIndex, 5) << "] `" << Name << "' [" 2315 << StrTable.data() + Signature->st_name << "] contains " 2316 << (Data.size() - 1) << " sections:\n" 2317 << " [Index] Name\n"; 2318 for (auto &Ndx : Data.slice(1)) { 2319 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2320 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2321 OS << " [" << format_decimal(Ndx, 5) << "] " << Name 2322 << "\n"; 2323 } 2324 } 2325 ++SectionIndex; 2326 } 2327 if (!HasGroups) 2328 OS << "There are no section groups in this file.\n"; 2329 } 2330 2331 template <class ELFT> 2332 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2333 const Elf_Rela &R, bool IsRela) { 2334 std::string Offset, Info, Addend = "", Value; 2335 SmallString<32> RelocName; 2336 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2337 StringRef TargetName; 2338 const Elf_Sym *Sym = nullptr; 2339 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2340 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2341 2342 // First two fields are bit width dependent. The rest of them are after are 2343 // fixed width. 2344 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2345 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2346 Sym = Obj->getRelocationSymbol(&R, SymTab); 2347 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2348 const Elf_Shdr *Sec = unwrapOrError( 2349 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2350 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2351 } else if (Sym) { 2352 TargetName = unwrapOrError(Sym->getName(StrTable)); 2353 } 2354 2355 if (Sym && IsRela) { 2356 if (R.r_addend < 0) 2357 Addend = " - "; 2358 else 2359 Addend = " + "; 2360 } 2361 2362 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2363 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2364 2365 int64_t RelAddend = R.r_addend; 2366 if (IsRela) 2367 Addend += to_hexString(std::abs(RelAddend), false); 2368 2369 if (Sym) 2370 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2371 2372 Fields[0].Str = Offset; 2373 Fields[1].Str = Info; 2374 Fields[2].Str = RelocName; 2375 Fields[3].Str = Value; 2376 Fields[4].Str = TargetName; 2377 for (auto &field : Fields) 2378 printField(field); 2379 OS << Addend; 2380 OS << "\n"; 2381 } 2382 2383 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2384 if (Is64) 2385 OS << " Offset Info Type" 2386 << " Symbol's Value Symbol's Name"; 2387 else 2388 OS << " Offset Info Type Sym. Value " 2389 << "Symbol's Name"; 2390 if (IsRela) 2391 OS << (IsRela ? " + Addend" : ""); 2392 OS << "\n"; 2393 } 2394 2395 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2396 bool HasRelocSections = false; 2397 for (const Elf_Shdr &Sec : Obj->sections()) { 2398 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 2399 continue; 2400 HasRelocSections = true; 2401 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2402 unsigned Entries = Sec.getEntityCount(); 2403 uintX_t Offset = Sec.sh_offset; 2404 OS << "\nRelocation section '" << Name << "' at offset 0x" 2405 << to_hexString(Offset, false) << " contains " << Entries 2406 << " entries:\n"; 2407 printRelocHeader(OS, ELFT::Is64Bits, (Sec.sh_type == ELF::SHT_RELA)); 2408 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2409 if (Sec.sh_type == ELF::SHT_REL) { 2410 for (const auto &R : Obj->rels(&Sec)) { 2411 Elf_Rela Rela; 2412 Rela.r_offset = R.r_offset; 2413 Rela.r_info = R.r_info; 2414 Rela.r_addend = 0; 2415 printRelocation(Obj, SymTab, Rela, false); 2416 } 2417 } else { 2418 for (const auto &R : Obj->relas(&Sec)) 2419 printRelocation(Obj, SymTab, R, true); 2420 } 2421 } 2422 if (!HasRelocSections) 2423 OS << "\nThere are no relocations in this file.\n"; 2424 } 2425 2426 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2427 using namespace ELF; 2428 switch (Arch) { 2429 case EM_ARM: 2430 switch (Type) { 2431 case SHT_ARM_EXIDX: 2432 return "ARM_EXIDX"; 2433 case SHT_ARM_PREEMPTMAP: 2434 return "ARM_PREEMPTMAP"; 2435 case SHT_ARM_ATTRIBUTES: 2436 return "ARM_ATTRIBUTES"; 2437 case SHT_ARM_DEBUGOVERLAY: 2438 return "ARM_DEBUGOVERLAY"; 2439 case SHT_ARM_OVERLAYSECTION: 2440 return "ARM_OVERLAYSECTION"; 2441 } 2442 case EM_X86_64: 2443 switch (Type) { 2444 case SHT_X86_64_UNWIND: 2445 return "X86_64_UNWIND"; 2446 } 2447 case EM_MIPS: 2448 case EM_MIPS_RS3_LE: 2449 switch (Type) { 2450 case SHT_MIPS_REGINFO: 2451 return "MIPS_REGINFO"; 2452 case SHT_MIPS_OPTIONS: 2453 return "MIPS_OPTIONS"; 2454 case SHT_MIPS_ABIFLAGS: 2455 return "MIPS_ABIFLAGS"; 2456 } 2457 } 2458 switch (Type) { 2459 case SHT_NULL: 2460 return "NULL"; 2461 case SHT_PROGBITS: 2462 return "PROGBITS"; 2463 case SHT_SYMTAB: 2464 return "SYMTAB"; 2465 case SHT_STRTAB: 2466 return "STRTAB"; 2467 case SHT_RELA: 2468 return "RELA"; 2469 case SHT_HASH: 2470 return "HASH"; 2471 case SHT_DYNAMIC: 2472 return "DYNAMIC"; 2473 case SHT_NOTE: 2474 return "NOTE"; 2475 case SHT_NOBITS: 2476 return "NOBITS"; 2477 case SHT_REL: 2478 return "REL"; 2479 case SHT_SHLIB: 2480 return "SHLIB"; 2481 case SHT_DYNSYM: 2482 return "DYNSYM"; 2483 case SHT_INIT_ARRAY: 2484 return "INIT_ARRAY"; 2485 case SHT_FINI_ARRAY: 2486 return "FINI_ARRAY"; 2487 case SHT_PREINIT_ARRAY: 2488 return "PREINIT_ARRAY"; 2489 case SHT_GROUP: 2490 return "GROUP"; 2491 case SHT_SYMTAB_SHNDX: 2492 return "SYMTAB SECTION INDICES"; 2493 // FIXME: Parse processor specific GNU attributes 2494 case SHT_GNU_ATTRIBUTES: 2495 return "ATTRIBUTES"; 2496 case SHT_GNU_HASH: 2497 return "GNU_HASH"; 2498 case SHT_GNU_verdef: 2499 return "VERDEF"; 2500 case SHT_GNU_verneed: 2501 return "VERNEED"; 2502 case SHT_GNU_versym: 2503 return "VERSYM"; 2504 default: 2505 return ""; 2506 } 2507 return ""; 2508 } 2509 2510 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2511 size_t SectionIndex = 0; 2512 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2513 Alignment; 2514 unsigned Bias; 2515 unsigned Width; 2516 2517 if (ELFT::Is64Bits) { 2518 Bias = 0; 2519 Width = 16; 2520 } else { 2521 Bias = 8; 2522 Width = 8; 2523 } 2524 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2525 << " section headers, starting at offset " 2526 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2527 OS << "Section Headers:\n"; 2528 Field Fields[11] = {{"[Nr]", 2}, 2529 {"Name", 7}, 2530 {"Type", 25}, 2531 {"Address", 41}, 2532 {"Off", 58 - Bias}, 2533 {"Size", 65 - Bias}, 2534 {"ES", 72 - Bias}, 2535 {"Flg", 75 - Bias}, 2536 {"Lk", 79 - Bias}, 2537 {"Inf", 82 - Bias}, 2538 {"Al", 86 - Bias}}; 2539 for (auto &f : Fields) 2540 printField(f); 2541 OS << "\n"; 2542 2543 for (const Elf_Shdr &Sec : Obj->sections()) { 2544 Number = to_string(SectionIndex); 2545 Fields[0].Str = Number; 2546 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2547 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2548 Fields[2].Str = Type; 2549 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2550 Fields[3].Str = Address; 2551 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2552 Fields[4].Str = Offset; 2553 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2554 Fields[5].Str = Size; 2555 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2556 Fields[6].Str = EntrySize; 2557 Flags = getGNUFlags(Sec.sh_flags); 2558 Fields[7].Str = Flags; 2559 Link = to_string(Sec.sh_link); 2560 Fields[8].Str = Link; 2561 Info = to_string(Sec.sh_info); 2562 Fields[9].Str = Info; 2563 Alignment = to_string(Sec.sh_addralign); 2564 Fields[10].Str = Alignment; 2565 OS.PadToColumn(Fields[0].Column); 2566 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2567 for (int i = 1; i < 7; i++) 2568 printField(Fields[i]); 2569 OS.PadToColumn(Fields[7].Column); 2570 OS << right_justify(Fields[7].Str, 3); 2571 OS.PadToColumn(Fields[8].Column); 2572 OS << right_justify(Fields[8].Str, 2); 2573 OS.PadToColumn(Fields[9].Column); 2574 OS << right_justify(Fields[9].Str, 3); 2575 OS.PadToColumn(Fields[10].Column); 2576 OS << right_justify(Fields[10].Str, 2); 2577 OS << "\n"; 2578 ++SectionIndex; 2579 } 2580 OS << "Key to Flags:\n" 2581 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2582 "(large)\n" 2583 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2584 x (unknown)\n" 2585 << " O (extra OS processing required) o (OS specific),\ 2586 p (processor specific)\n"; 2587 } 2588 2589 template <class ELFT> 2590 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2591 size_t Entries) { 2592 if (Name.size()) 2593 OS << "\nSymbol table '" << Name << "' contains " << Entries 2594 << " entries:\n"; 2595 else 2596 OS << "\n Symbol table for image:\n"; 2597 2598 if (ELFT::Is64Bits) 2599 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2600 else 2601 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2602 } 2603 2604 template <class ELFT> 2605 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2606 const Elf_Sym *Symbol, 2607 const Elf_Sym *FirstSym) { 2608 unsigned SectionIndex = Symbol->st_shndx; 2609 switch (SectionIndex) { 2610 case ELF::SHN_UNDEF: 2611 return "UND"; 2612 case ELF::SHN_ABS: 2613 return "ABS"; 2614 case ELF::SHN_COMMON: 2615 return "COM"; 2616 case ELF::SHN_XINDEX: 2617 SectionIndex = Obj->getExtendedSymbolTableIndex( 2618 Symbol, FirstSym, this->dumper()->getShndxTable()); 2619 default: 2620 // Find if: 2621 // Processor specific 2622 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2623 return std::string("PRC[0x") + 2624 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2625 // OS specific 2626 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2627 return std::string("OS[0x") + 2628 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2629 // Architecture reserved: 2630 if (SectionIndex >= ELF::SHN_LORESERVE && 2631 SectionIndex <= ELF::SHN_HIRESERVE) 2632 return std::string("RSV[0x") + 2633 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2634 // A normal section with an index 2635 return to_string(format_decimal(SectionIndex, 3)); 2636 } 2637 } 2638 2639 template <class ELFT> 2640 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2641 const Elf_Sym *FirstSym, StringRef StrTable, 2642 bool IsDynamic) { 2643 static int Idx = 0; 2644 static bool Dynamic = true; 2645 size_t Width; 2646 2647 // If this function was called with a different value from IsDynamic 2648 // from last call, happens when we move from dynamic to static symbol 2649 // table, "Num" field should be reset. 2650 if (!Dynamic != !IsDynamic) { 2651 Idx = 0; 2652 Dynamic = false; 2653 } 2654 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2655 unsigned Bias = 0; 2656 if (ELFT::Is64Bits) { 2657 Bias = 8; 2658 Width = 16; 2659 } else { 2660 Bias = 0; 2661 Width = 8; 2662 } 2663 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2664 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2665 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2666 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2667 Size = to_string(format_decimal(Symbol->st_size, 5)); 2668 unsigned char SymbolType = Symbol->getType(); 2669 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2670 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2671 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2672 else 2673 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2674 unsigned Vis = Symbol->getVisibility(); 2675 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2676 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2677 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2678 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2679 Fields[0].Str = Num; 2680 Fields[1].Str = Value; 2681 Fields[2].Str = Size; 2682 Fields[3].Str = Type; 2683 Fields[4].Str = Binding; 2684 Fields[5].Str = Visibility; 2685 Fields[6].Str = Section; 2686 Fields[7].Str = Name; 2687 for (auto &Entry : Fields) 2688 printField(Entry); 2689 OS << "\n"; 2690 } 2691 2692 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2693 this->dumper()->printSymbolsHelper(true); 2694 this->dumper()->printSymbolsHelper(false); 2695 } 2696 2697 template <class ELFT> 2698 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2699 this->dumper()->printSymbolsHelper(true); 2700 } 2701 2702 static inline std::string printPhdrFlags(unsigned Flag) { 2703 std::string Str; 2704 Str = (Flag & PF_R) ? "R" : " "; 2705 Str += (Flag & PF_W) ? "W" : " "; 2706 Str += (Flag & PF_X) ? "E" : " "; 2707 return Str; 2708 } 2709 2710 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 2711 // PT_TLS must only have SHF_TLS sections 2712 template <class ELFT> 2713 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 2714 const Elf_Shdr &Sec) { 2715 return (((Sec.sh_flags & ELF::SHF_TLS) && 2716 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 2717 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 2718 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 2719 } 2720 2721 // Non-SHT_NOBITS must have its offset inside the segment 2722 // Only non-zero section can be at end of segment 2723 template <class ELFT> 2724 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2725 if (Sec.sh_type == ELF::SHT_NOBITS) 2726 return true; 2727 bool IsSpecial = 2728 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2729 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2730 auto SectionSize = 2731 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2732 if (Sec.sh_offset >= Phdr.p_offset) 2733 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 2734 /*only non-zero sized sections at end*/ && 2735 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 2736 return false; 2737 } 2738 2739 // SHF_ALLOC must have VMA inside segment 2740 // Only non-zero section can be at end of segment 2741 template <class ELFT> 2742 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2743 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 2744 return true; 2745 bool IsSpecial = 2746 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2747 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2748 auto SectionSize = 2749 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2750 if (Sec.sh_addr >= Phdr.p_vaddr) 2751 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 2752 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 2753 return false; 2754 } 2755 2756 // No section with zero size must be at start or end of PT_DYNAMIC 2757 template <class ELFT> 2758 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2759 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 2760 return true; 2761 // Is section within the phdr both based on offset and VMA ? 2762 return ((Sec.sh_type == ELF::SHT_NOBITS) || 2763 (Sec.sh_offset > Phdr.p_offset && 2764 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 2765 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 2766 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 2767 } 2768 2769 template <class ELFT> 2770 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 2771 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2772 unsigned Width = ELFT::Is64Bits ? 18 : 10; 2773 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 2774 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 2775 2776 const Elf_Ehdr *Header = Obj->getHeader(); 2777 Field Fields[8] = {2, 17, 26, 37 + Bias, 2778 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 2779 OS << "\nElf file type is " 2780 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 2781 << "Entry point " << format_hex(Header->e_entry, 1) << "\n" 2782 << "There are " << Header->e_phnum << " program headers," 2783 << " starting at offset " << Header->e_phoff << "\n\n" 2784 << "Program Headers:\n"; 2785 if (ELFT::Is64Bits) 2786 OS << " Type Offset VirtAddr PhysAddr " 2787 << " FileSiz MemSiz Flg Align\n"; 2788 else 2789 OS << " Type Offset VirtAddr PhysAddr FileSiz " 2790 << "MemSiz Flg Align\n"; 2791 for (const auto &Phdr : Obj->program_headers()) { 2792 Type = getElfPtType(Header->e_machine, Phdr.p_type); 2793 Offset = to_string(format_hex(Phdr.p_offset, 8)); 2794 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 2795 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 2796 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 2797 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 2798 Flag = printPhdrFlags(Phdr.p_flags); 2799 Align = to_string(format_hex(Phdr.p_align, 1)); 2800 Fields[0].Str = Type; 2801 Fields[1].Str = Offset; 2802 Fields[2].Str = VMA; 2803 Fields[3].Str = LMA; 2804 Fields[4].Str = FileSz; 2805 Fields[5].Str = MemSz; 2806 Fields[6].Str = Flag; 2807 Fields[7].Str = Align; 2808 for (auto Field : Fields) 2809 printField(Field); 2810 if (Phdr.p_type == ELF::PT_INTERP) { 2811 OS << "\n [Requesting program interpreter: "; 2812 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 2813 } 2814 OS << "\n"; 2815 } 2816 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 2817 int Phnum = 0; 2818 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 2819 std::string Sections; 2820 OS << format(" %2.2d ", Phnum++); 2821 for (const Elf_Shdr &Sec : Obj->sections()) { 2822 // Check if each section is in a segment and then print mapping. 2823 // readelf additionally makes sure it does not print zero sized sections 2824 // at end of segments and for PT_DYNAMIC both start and end of section 2825 // .tbss must only be shown in PT_TLS section. 2826 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 2827 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 2828 Phdr.p_type != ELF::PT_TLS; 2829 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 2830 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 2831 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 2832 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 2833 } 2834 OS << Sections << "\n"; 2835 OS.flush(); 2836 } 2837 } 2838 2839 template <class ELFT> 2840 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 2841 bool IsRela) { 2842 SmallString<32> RelocName; 2843 StringRef SymbolName; 2844 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2845 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2846 // First two fields are bit width dependent. The rest of them are after are 2847 // fixed width. 2848 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2849 2850 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 2851 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 2852 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2853 SymbolName = 2854 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 2855 std::string Addend = "", Info, Offset, Value; 2856 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2857 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2858 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2859 int64_t RelAddend = R.r_addend; 2860 if (SymbolName.size() && IsRela) { 2861 if (R.r_addend < 0) 2862 Addend = " - "; 2863 else 2864 Addend = " + "; 2865 } 2866 2867 if (!SymbolName.size() && Sym->getValue() == 0) 2868 Value = ""; 2869 2870 if (IsRela) 2871 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 2872 2873 2874 Fields[0].Str = Offset; 2875 Fields[1].Str = Info; 2876 Fields[2].Str = RelocName.c_str(); 2877 Fields[3].Str = Value; 2878 Fields[4].Str = SymbolName; 2879 for (auto &Field : Fields) 2880 printField(Field); 2881 OS << Addend; 2882 OS << "\n"; 2883 } 2884 2885 template <class ELFT> 2886 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 2887 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 2888 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 2889 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 2890 if (DynRelaRegion.Size > 0) { 2891 OS << "\n'RELA' relocation section at offset " 2892 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 2893 Obj->base(), 2894 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 2895 printRelocHeader(OS, ELFT::Is64Bits, true); 2896 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 2897 printDynamicRelocation(Obj, Rela, true); 2898 } 2899 if (DynRelRegion.Size > 0) { 2900 OS << "\n'REL' relocation section at offset " 2901 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 2902 Obj->base(), 2903 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 2904 printRelocHeader(OS, ELFT::Is64Bits, false); 2905 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 2906 Elf_Rela Rela; 2907 Rela.r_offset = Rel.r_offset; 2908 Rela.r_info = Rel.r_info; 2909 Rela.r_addend = 0; 2910 printDynamicRelocation(Obj, Rela, false); 2911 } 2912 } 2913 if (DynPLTRelRegion.Size) { 2914 OS << "\n'PLT' relocation section at offset " 2915 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 2916 Obj->base(), 2917 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 2918 } 2919 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 2920 printRelocHeader(OS, ELFT::Is64Bits, true); 2921 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 2922 printDynamicRelocation(Obj, Rela, true); 2923 } else { 2924 printRelocHeader(OS, ELFT::Is64Bits, false); 2925 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 2926 Elf_Rela Rela; 2927 Rela.r_offset = Rel.r_offset; 2928 Rela.r_info = Rel.r_info; 2929 Rela.r_addend = 0; 2930 printDynamicRelocation(Obj, Rela, false); 2931 } 2932 } 2933 } 2934 2935 // Hash histogram shows statistics of how efficient the hash was for the 2936 // dynamic symbol table. The table shows number of hash buckets for different 2937 // lengths of chains as absolute number and percentage of the total buckets. 2938 // Additionally cumulative coverage of symbols for each set of buckets. 2939 template <class ELFT> 2940 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 2941 2942 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 2943 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 2944 2945 // Print histogram for .hash section 2946 if (HashTable) { 2947 size_t NBucket = HashTable->nbucket; 2948 size_t NChain = HashTable->nchain; 2949 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 2950 ArrayRef<Elf_Word> Chains = HashTable->chains(); 2951 size_t TotalSyms = 0; 2952 // If hash table is correct, we have at least chains with 0 length 2953 size_t MaxChain = 1; 2954 size_t CumulativeNonZero = 0; 2955 2956 if (NChain == 0 || NBucket == 0) 2957 return; 2958 2959 std::vector<size_t> ChainLen(NBucket, 0); 2960 // Go over all buckets and and note chain lengths of each bucket (total 2961 // unique chain lengths). 2962 for (size_t B = 0; B < NBucket; B++) { 2963 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 2964 if (MaxChain <= ++ChainLen[B]) 2965 MaxChain++; 2966 TotalSyms += ChainLen[B]; 2967 } 2968 2969 if (!TotalSyms) 2970 return; 2971 2972 std::vector<size_t> Count(MaxChain, 0) ; 2973 // Count how long is the chain for each bucket 2974 for (size_t B = 0; B < NBucket; B++) 2975 ++Count[ChainLen[B]]; 2976 // Print Number of buckets with each chain lengths and their cumulative 2977 // coverage of the symbols 2978 OS << "Histogram for bucket list length (total of " << NBucket 2979 << " buckets)\n" 2980 << " Length Number % of total Coverage\n"; 2981 for (size_t I = 0; I < MaxChain; I++) { 2982 CumulativeNonZero += Count[I] * I; 2983 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 2984 (Count[I] * 100.0) / NBucket, 2985 (CumulativeNonZero * 100.0) / TotalSyms); 2986 } 2987 } 2988 2989 // Print histogram for .gnu.hash section 2990 if (GnuHashTable) { 2991 size_t NBucket = GnuHashTable->nbuckets; 2992 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 2993 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 2994 if (!NumSyms) 2995 return; 2996 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 2997 size_t Symndx = GnuHashTable->symndx; 2998 size_t TotalSyms = 0; 2999 size_t MaxChain = 1; 3000 size_t CumulativeNonZero = 0; 3001 3002 if (Chains.size() == 0 || NBucket == 0) 3003 return; 3004 3005 std::vector<size_t> ChainLen(NBucket, 0); 3006 3007 for (size_t B = 0; B < NBucket; B++) { 3008 if (!Buckets[B]) 3009 continue; 3010 size_t Len = 1; 3011 for (size_t C = Buckets[B] - Symndx; 3012 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3013 if (MaxChain < ++Len) 3014 MaxChain++; 3015 ChainLen[B] = Len; 3016 TotalSyms += Len; 3017 } 3018 MaxChain++; 3019 3020 if (!TotalSyms) 3021 return; 3022 3023 std::vector<size_t> Count(MaxChain, 0) ; 3024 for (size_t B = 0; B < NBucket; B++) 3025 ++Count[ChainLen[B]]; 3026 // Print Number of buckets with each chain lengths and their cumulative 3027 // coverage of the symbols 3028 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3029 << " buckets)\n" 3030 << " Length Number % of total Coverage\n"; 3031 for (size_t I = 0; I <MaxChain; I++) { 3032 CumulativeNonZero += Count[I] * I; 3033 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3034 (Count[I] * 100.0) / NBucket, 3035 (CumulativeNonZero * 100.0) / TotalSyms); 3036 } 3037 } 3038 } 3039 3040 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3041 const Elf_Ehdr *e = Obj->getHeader(); 3042 { 3043 DictScope D(W, "ElfHeader"); 3044 { 3045 DictScope D(W, "Ident"); 3046 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3047 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3048 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3049 makeArrayRef(ElfDataEncoding)); 3050 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3051 3052 // Handle architecture specific OS/ABI values. 3053 if (e->e_machine == ELF::EM_AMDGPU && 3054 e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA) 3055 W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA); 3056 else 3057 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], 3058 makeArrayRef(ElfOSABI)); 3059 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3060 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3061 } 3062 3063 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3064 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3065 W.printNumber("Version", e->e_version); 3066 W.printHex("Entry", e->e_entry); 3067 W.printHex("ProgramHeaderOffset", e->e_phoff); 3068 W.printHex("SectionHeaderOffset", e->e_shoff); 3069 if (e->e_machine == EM_MIPS) 3070 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3071 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3072 unsigned(ELF::EF_MIPS_MACH)); 3073 else 3074 W.printFlags("Flags", e->e_flags); 3075 W.printNumber("HeaderSize", e->e_ehsize); 3076 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3077 W.printNumber("ProgramHeaderCount", e->e_phnum); 3078 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3079 W.printNumber("SectionHeaderCount", e->e_shnum); 3080 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3081 } 3082 } 3083 3084 template <class ELFT> 3085 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3086 DictScope Lists(W, "Groups"); 3087 uint32_t SectionIndex = 0; 3088 bool HasGroups = false; 3089 for (const Elf_Shdr &Sec : Obj->sections()) { 3090 if (Sec.sh_type == ELF::SHT_GROUP) { 3091 HasGroups = true; 3092 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 3093 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3094 const Elf_Sym *Sym = Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 3095 auto Data = unwrapOrError( 3096 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 3097 DictScope D(W, "Group"); 3098 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3099 W.printNumber("Name", Name, Sec.sh_name); 3100 W.printNumber("Index", SectionIndex); 3101 W.printHex("Type", getGroupType(Data[0]), Data[0]); 3102 W.startLine() << "Signature: " << StrTable.data() + Sym->st_name << "\n"; 3103 { 3104 ListScope L(W, "Section(s) in group"); 3105 size_t Member = 1; 3106 while (Member < Data.size()) { 3107 auto Sec = unwrapOrError(Obj->getSection(Data[Member])); 3108 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 3109 W.startLine() << Name << " (" << Data[Member++] << ")\n"; 3110 } 3111 } 3112 } 3113 ++SectionIndex; 3114 } 3115 if (!HasGroups) 3116 W.startLine() << "There are no group sections in the file.\n"; 3117 } 3118 3119 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3120 ListScope D(W, "Relocations"); 3121 3122 int SectionNumber = -1; 3123 for (const Elf_Shdr &Sec : Obj->sections()) { 3124 ++SectionNumber; 3125 3126 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 3127 continue; 3128 3129 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3130 3131 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3132 W.indent(); 3133 3134 printRelocations(&Sec, Obj); 3135 3136 W.unindent(); 3137 W.startLine() << "}\n"; 3138 } 3139 } 3140 3141 template <class ELFT> 3142 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3143 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3144 3145 switch (Sec->sh_type) { 3146 case ELF::SHT_REL: 3147 for (const Elf_Rel &R : Obj->rels(Sec)) { 3148 Elf_Rela Rela; 3149 Rela.r_offset = R.r_offset; 3150 Rela.r_info = R.r_info; 3151 Rela.r_addend = 0; 3152 printRelocation(Obj, Rela, SymTab); 3153 } 3154 break; 3155 case ELF::SHT_RELA: 3156 for (const Elf_Rela &R : Obj->relas(Sec)) 3157 printRelocation(Obj, R, SymTab); 3158 break; 3159 } 3160 } 3161 3162 template <class ELFT> 3163 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3164 const Elf_Shdr *SymTab) { 3165 SmallString<32> RelocName; 3166 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3167 StringRef TargetName; 3168 const Elf_Sym *Sym = Obj->getRelocationSymbol(&Rel, SymTab); 3169 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3170 const Elf_Shdr *Sec = unwrapOrError( 3171 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3172 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3173 } else if (Sym) { 3174 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3175 TargetName = unwrapOrError(Sym->getName(StrTable)); 3176 } 3177 3178 if (opts::ExpandRelocs) { 3179 DictScope Group(W, "Relocation"); 3180 W.printHex("Offset", Rel.r_offset); 3181 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3182 W.printNumber("Symbol", TargetName.size() > 0 ? TargetName : "-", 3183 Rel.getSymbol(Obj->isMips64EL())); 3184 W.printHex("Addend", Rel.r_addend); 3185 } else { 3186 raw_ostream &OS = W.startLine(); 3187 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3188 << (TargetName.size() > 0 ? TargetName : "-") << " " 3189 << W.hex(Rel.r_addend) << "\n"; 3190 } 3191 } 3192 3193 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3194 ListScope SectionsD(W, "Sections"); 3195 3196 int SectionIndex = -1; 3197 for (const Elf_Shdr &Sec : Obj->sections()) { 3198 ++SectionIndex; 3199 3200 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3201 3202 DictScope SectionD(W, "Section"); 3203 W.printNumber("Index", SectionIndex); 3204 W.printNumber("Name", Name, Sec.sh_name); 3205 W.printHex("Type", 3206 getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type), 3207 Sec.sh_type); 3208 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3209 std::end(ElfSectionFlags)); 3210 switch (Obj->getHeader()->e_machine) { 3211 case EM_AMDGPU: 3212 SectionFlags.insert(SectionFlags.end(), std::begin(ElfAMDGPUSectionFlags), 3213 std::end(ElfAMDGPUSectionFlags)); 3214 break; 3215 case EM_HEXAGON: 3216 SectionFlags.insert(SectionFlags.end(), 3217 std::begin(ElfHexagonSectionFlags), 3218 std::end(ElfHexagonSectionFlags)); 3219 break; 3220 case EM_MIPS: 3221 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3222 std::end(ElfMipsSectionFlags)); 3223 break; 3224 case EM_X86_64: 3225 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3226 std::end(ElfX86_64SectionFlags)); 3227 break; 3228 default: 3229 // Nothing to do. 3230 break; 3231 } 3232 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3233 W.printHex("Address", Sec.sh_addr); 3234 W.printHex("Offset", Sec.sh_offset); 3235 W.printNumber("Size", Sec.sh_size); 3236 W.printNumber("Link", Sec.sh_link); 3237 W.printNumber("Info", Sec.sh_info); 3238 W.printNumber("AddressAlignment", Sec.sh_addralign); 3239 W.printNumber("EntrySize", Sec.sh_entsize); 3240 3241 if (opts::SectionRelocations) { 3242 ListScope D(W, "Relocations"); 3243 printRelocations(&Sec, Obj); 3244 } 3245 3246 if (opts::SectionSymbols) { 3247 ListScope D(W, "Symbols"); 3248 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3249 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3250 3251 for (const Elf_Sym &Sym : Obj->symbols(Symtab)) { 3252 const Elf_Shdr *SymSec = unwrapOrError( 3253 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3254 if (SymSec == &Sec) 3255 printSymbol(Obj, &Sym, Obj->symbol_begin(Symtab), StrTable, false); 3256 } 3257 } 3258 3259 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3260 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3261 W.printBinaryBlock("SectionData", 3262 StringRef((const char *)Data.data(), Data.size())); 3263 } 3264 } 3265 } 3266 3267 template <class ELFT> 3268 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3269 const Elf_Sym *First, StringRef StrTable, 3270 bool IsDynamic) { 3271 unsigned SectionIndex = 0; 3272 StringRef SectionName; 3273 getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(), 3274 SectionName, SectionIndex); 3275 std::string FullSymbolName = 3276 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3277 unsigned char SymbolType = Symbol->getType(); 3278 3279 DictScope D(W, "Symbol"); 3280 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3281 W.printHex("Value", Symbol->st_value); 3282 W.printNumber("Size", Symbol->st_size); 3283 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3284 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3285 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3286 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3287 else 3288 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3289 if (Symbol->st_other == 0) 3290 // Usually st_other flag is zero. Do not pollute the output 3291 // by flags enumeration in that case. 3292 W.printNumber("Other", 0); 3293 else { 3294 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3295 std::end(ElfSymOtherFlags)); 3296 if (Obj->getHeader()->e_machine == EM_MIPS) { 3297 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3298 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3299 // cases separately. 3300 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3301 SymOtherFlags.insert(SymOtherFlags.end(), 3302 std::begin(ElfMips16SymOtherFlags), 3303 std::end(ElfMips16SymOtherFlags)); 3304 else 3305 SymOtherFlags.insert(SymOtherFlags.end(), 3306 std::begin(ElfMipsSymOtherFlags), 3307 std::end(ElfMipsSymOtherFlags)); 3308 } 3309 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3310 } 3311 W.printHex("Section", SectionName, SectionIndex); 3312 } 3313 3314 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3315 ListScope Group(W, "Symbols"); 3316 this->dumper()->printSymbolsHelper(false); 3317 } 3318 3319 template <class ELFT> 3320 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3321 ListScope Group(W, "DynamicSymbols"); 3322 this->dumper()->printSymbolsHelper(true); 3323 } 3324 3325 template <class ELFT> 3326 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3327 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3328 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3329 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3330 if (DynRelRegion.Size && DynRelaRegion.Size) 3331 report_fatal_error("There are both REL and RELA dynamic relocations"); 3332 W.startLine() << "Dynamic Relocations {\n"; 3333 W.indent(); 3334 if (DynRelaRegion.Size > 0) 3335 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3336 printDynamicRelocation(Obj, Rela); 3337 else 3338 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3339 Elf_Rela Rela; 3340 Rela.r_offset = Rel.r_offset; 3341 Rela.r_info = Rel.r_info; 3342 Rela.r_addend = 0; 3343 printDynamicRelocation(Obj, Rela); 3344 } 3345 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3346 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3347 printDynamicRelocation(Obj, Rela); 3348 else 3349 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3350 Elf_Rela Rela; 3351 Rela.r_offset = Rel.r_offset; 3352 Rela.r_info = Rel.r_info; 3353 Rela.r_addend = 0; 3354 printDynamicRelocation(Obj, Rela); 3355 } 3356 W.unindent(); 3357 W.startLine() << "}\n"; 3358 } 3359 3360 template <class ELFT> 3361 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 3362 SmallString<32> RelocName; 3363 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3364 StringRef SymbolName; 3365 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 3366 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3367 SymbolName = 3368 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3369 if (opts::ExpandRelocs) { 3370 DictScope Group(W, "Relocation"); 3371 W.printHex("Offset", Rel.r_offset); 3372 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3373 W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-"); 3374 W.printHex("Addend", Rel.r_addend); 3375 } else { 3376 raw_ostream &OS = W.startLine(); 3377 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3378 << (SymbolName.size() > 0 ? SymbolName : "-") << " " 3379 << W.hex(Rel.r_addend) << "\n"; 3380 } 3381 } 3382 3383 template <class ELFT> 3384 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3385 ListScope L(W, "ProgramHeaders"); 3386 3387 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 3388 DictScope P(W, "ProgramHeader"); 3389 W.printHex("Type", 3390 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 3391 Phdr.p_type); 3392 W.printHex("Offset", Phdr.p_offset); 3393 W.printHex("VirtualAddress", Phdr.p_vaddr); 3394 W.printHex("PhysicalAddress", Phdr.p_paddr); 3395 W.printNumber("FileSize", Phdr.p_filesz); 3396 W.printNumber("MemSize", Phdr.p_memsz); 3397 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 3398 W.printNumber("Alignment", Phdr.p_align); 3399 } 3400 } 3401 template <class ELFT> 3402 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3403 W.startLine() << "Hash Histogram not implemented!\n"; 3404 } 3405