1 //===-- ELFDumper.cpp - ELF-specific dumper ---------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "ARMAttributeParser.h" 16 #include "ARMEHABIPrinter.h" 17 #include "Error.h" 18 #include "ObjDumper.h" 19 #include "StackMapPrinter.h" 20 #include "llvm-readobj.h" 21 #include "llvm/ADT/Optional.h" 22 #include "llvm/ADT/SmallString.h" 23 #include "llvm/ADT/StringExtras.h" 24 #include "llvm/Object/ELFObjectFile.h" 25 #include "llvm/Support/ARMBuildAttributes.h" 26 #include "llvm/Support/Compiler.h" 27 #include "llvm/Support/Format.h" 28 #include "llvm/Support/FormattedStream.h" 29 #include "llvm/Support/MathExtras.h" 30 #include "llvm/Support/MipsABIFlags.h" 31 #include "llvm/Support/ScopedPrinter.h" 32 #include "llvm/Support/raw_ostream.h" 33 34 using namespace llvm; 35 using namespace llvm::object; 36 using namespace ELF; 37 38 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 39 case ns::enum: return #enum; 40 41 #define ENUM_ENT(enum, altName) \ 42 { #enum, altName, ELF::enum } 43 44 #define ENUM_ENT_1(enum) \ 45 { #enum, #enum, ELF::enum } 46 47 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 48 case ns::enum: \ 49 return std::string(#enum).substr(3); 50 51 #define TYPEDEF_ELF_TYPES(ELFT) \ 52 typedef ELFFile<ELFT> ELFO; \ 53 typedef typename ELFO::Elf_Shdr Elf_Shdr; \ 54 typedef typename ELFO::Elf_Sym Elf_Sym; \ 55 typedef typename ELFO::Elf_Dyn Elf_Dyn; \ 56 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; \ 57 typedef typename ELFO::Elf_Rel Elf_Rel; \ 58 typedef typename ELFO::Elf_Rela Elf_Rela; \ 59 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; \ 60 typedef typename ELFO::Elf_Phdr Elf_Phdr; \ 61 typedef typename ELFO::Elf_Half Elf_Half; \ 62 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; \ 63 typedef typename ELFO::Elf_Word Elf_Word; \ 64 typedef typename ELFO::Elf_Hash Elf_Hash; \ 65 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; \ 66 typedef typename ELFO::uintX_t uintX_t; 67 68 namespace { 69 70 template <class ELFT> class DumpStyle; 71 72 /// Represents a contiguous uniform range in the file. We cannot just create a 73 /// range directly because when creating one of these from the .dynamic table 74 /// the size, entity size and virtual address are different entries in arbitrary 75 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 76 struct DynRegionInfo { 77 DynRegionInfo() : Addr(nullptr), Size(0), EntSize(0) {} 78 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 79 : Addr(A), Size(S), EntSize(ES) {} 80 /// \brief Address in current address space. 81 const void *Addr; 82 /// \brief Size in bytes of the region. 83 uint64_t Size; 84 /// \brief Size of each entity in the region. 85 uint64_t EntSize; 86 87 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 88 const Type *Start = reinterpret_cast<const Type *>(Addr); 89 if (!Start) 90 return {Start, Start}; 91 if (EntSize != sizeof(Type) || Size % EntSize) 92 reportError("Invalid entity size"); 93 return {Start, Start + (Size / EntSize)}; 94 } 95 }; 96 97 template<typename ELFT> 98 class ELFDumper : public ObjDumper { 99 public: 100 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 101 102 void printFileHeaders() override; 103 void printSections() override; 104 void printRelocations() override; 105 void printDynamicRelocations() override; 106 void printSymbols() override; 107 void printDynamicSymbols() override; 108 void printUnwindInfo() override; 109 110 void printDynamicTable() override; 111 void printNeededLibraries() override; 112 void printProgramHeaders() override; 113 void printHashTable() override; 114 void printGnuHashTable() override; 115 void printLoadName() override; 116 void printVersionInfo() override; 117 void printGroupSections() override; 118 119 void printAttributes() override; 120 void printMipsPLTGOT() override; 121 void printMipsABIFlags() override; 122 void printMipsReginfo() override; 123 void printMipsOptions() override; 124 125 void printStackMap() const override; 126 127 void printHashHistogram() override; 128 129 private: 130 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 131 typedef ELFFile<ELFT> ELFO; 132 typedef typename ELFO::Elf_Shdr Elf_Shdr; 133 typedef typename ELFO::Elf_Sym Elf_Sym; 134 typedef typename ELFO::Elf_Sym_Range Elf_Sym_Range; 135 typedef typename ELFO::Elf_Dyn Elf_Dyn; 136 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 137 typedef typename ELFO::Elf_Rel Elf_Rel; 138 typedef typename ELFO::Elf_Rela Elf_Rela; 139 typedef typename ELFO::Elf_Rel_Range Elf_Rel_Range; 140 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; 141 typedef typename ELFO::Elf_Phdr Elf_Phdr; 142 typedef typename ELFO::Elf_Half Elf_Half; 143 typedef typename ELFO::Elf_Hash Elf_Hash; 144 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; 145 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; 146 typedef typename ELFO::Elf_Word Elf_Word; 147 typedef typename ELFO::uintX_t uintX_t; 148 typedef typename ELFO::Elf_Versym Elf_Versym; 149 typedef typename ELFO::Elf_Verneed Elf_Verneed; 150 typedef typename ELFO::Elf_Vernaux Elf_Vernaux; 151 typedef typename ELFO::Elf_Verdef Elf_Verdef; 152 typedef typename ELFO::Elf_Verdaux Elf_Verdaux; 153 154 DynRegionInfo checkDRI(DynRegionInfo DRI) { 155 if (DRI.Addr < Obj->base() || 156 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 157 error(llvm::object::object_error::parse_failed); 158 return DRI; 159 } 160 161 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 162 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 163 } 164 165 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 166 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 167 } 168 169 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 170 171 void printValue(uint64_t Type, uint64_t Value); 172 173 StringRef getDynamicString(uint64_t Offset) const; 174 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 175 bool &IsDefault) const; 176 void LoadVersionMap() const; 177 void LoadVersionNeeds(const Elf_Shdr *ec) const; 178 void LoadVersionDefs(const Elf_Shdr *sec) const; 179 180 const ELFO *Obj; 181 DynRegionInfo DynRelRegion; 182 DynRegionInfo DynRelaRegion; 183 DynRegionInfo DynPLTRelRegion; 184 DynRegionInfo DynSymRegion; 185 DynRegionInfo DynamicTable; 186 StringRef DynamicStringTable; 187 StringRef SOName; 188 const Elf_Hash *HashTable = nullptr; 189 const Elf_GnuHash *GnuHashTable = nullptr; 190 const Elf_Shdr *DotSymtabSec = nullptr; 191 StringRef DynSymtabName; 192 ArrayRef<Elf_Word> ShndxTable; 193 194 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 195 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 196 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 197 198 // Records for each version index the corresponding Verdef or Vernaux entry. 199 // This is filled the first time LoadVersionMap() is called. 200 class VersionMapEntry : public PointerIntPair<const void *, 1> { 201 public: 202 // If the integer is 0, this is an Elf_Verdef*. 203 // If the integer is 1, this is an Elf_Vernaux*. 204 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 205 VersionMapEntry(const Elf_Verdef *verdef) 206 : PointerIntPair<const void *, 1>(verdef, 0) {} 207 VersionMapEntry(const Elf_Vernaux *vernaux) 208 : PointerIntPair<const void *, 1>(vernaux, 1) {} 209 bool isNull() const { return getPointer() == nullptr; } 210 bool isVerdef() const { return !isNull() && getInt() == 0; } 211 bool isVernaux() const { return !isNull() && getInt() == 1; } 212 const Elf_Verdef *getVerdef() const { 213 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 214 } 215 const Elf_Vernaux *getVernaux() const { 216 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 217 } 218 }; 219 mutable SmallVector<VersionMapEntry, 16> VersionMap; 220 221 public: 222 Elf_Dyn_Range dynamic_table() const { 223 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 224 } 225 226 Elf_Sym_Range dynamic_symbols() const { 227 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 228 } 229 230 Elf_Rel_Range dyn_rels() const; 231 Elf_Rela_Range dyn_relas() const; 232 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 233 bool IsDynamic) const; 234 235 void printSymbolsHelper(bool IsDynamic) const; 236 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 237 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 238 StringRef getDynamicStringTable() const { return DynamicStringTable; } 239 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 240 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 241 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 242 const Elf_Hash *getHashTable() const { return HashTable; } 243 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 244 }; 245 246 template <class ELFT> 247 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 248 StringRef StrTable, SymtabName; 249 size_t Entries = 0; 250 Elf_Sym_Range Syms(nullptr, nullptr); 251 if (IsDynamic) { 252 StrTable = DynamicStringTable; 253 Syms = dynamic_symbols(); 254 SymtabName = DynSymtabName; 255 if (DynSymRegion.Addr) 256 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 257 } else { 258 if (!DotSymtabSec) 259 return; 260 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 261 Syms = Obj->symbols(DotSymtabSec); 262 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 263 Entries = DotSymtabSec->getEntityCount(); 264 } 265 if (Syms.begin() == Syms.end()) 266 return; 267 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 268 for (const auto &Sym : Syms) 269 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 270 } 271 272 template <typename ELFT> class DumpStyle { 273 public: 274 using Elf_Shdr = typename ELFFile<ELFT>::Elf_Shdr; 275 using Elf_Sym = typename ELFFile<ELFT>::Elf_Sym; 276 277 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 278 virtual ~DumpStyle() {} 279 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 280 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 281 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 282 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 283 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 284 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 285 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 286 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 287 size_t Offset) { 288 return; 289 } 290 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 291 const Elf_Sym *FirstSym, StringRef StrTable, 292 bool IsDynamic) = 0; 293 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 294 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 295 const ELFDumper<ELFT> *dumper() const { return Dumper; } 296 private: 297 const ELFDumper<ELFT> *Dumper; 298 }; 299 300 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 301 formatted_raw_ostream OS; 302 public: 303 TYPEDEF_ELF_TYPES(ELFT) 304 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 305 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 306 void printFileHeaders(const ELFO *Obj) override; 307 void printGroupSections(const ELFFile<ELFT> *Obj) override; 308 void printRelocations(const ELFO *Obj) override; 309 void printSections(const ELFO *Obj) override; 310 void printSymbols(const ELFO *Obj) override; 311 void printDynamicSymbols(const ELFO *Obj) override; 312 void printDynamicRelocations(const ELFO *Obj) override; 313 virtual void printSymtabMessage(const ELFO *Obj, StringRef Name, 314 size_t Offset) override; 315 void printProgramHeaders(const ELFO *Obj) override; 316 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 317 318 private: 319 struct Field { 320 StringRef Str; 321 unsigned Column; 322 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 323 Field(unsigned Col) : Str(""), Column(Col) {} 324 }; 325 326 template <typename T, typename TEnum> 327 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 328 for (const auto &EnumItem : EnumValues) 329 if (EnumItem.Value == Value) 330 return EnumItem.AltName; 331 return to_hexString(Value, false); 332 } 333 334 formatted_raw_ostream &printField(struct Field F) { 335 if (F.Column != 0) 336 OS.PadToColumn(F.Column); 337 OS << F.Str; 338 OS.flush(); 339 return OS; 340 } 341 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 342 const Elf_Rela &R, bool IsRela); 343 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 344 StringRef StrTable, bool IsDynamic) override; 345 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 346 const Elf_Sym *FirstSym); 347 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 348 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 349 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 350 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 351 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 352 }; 353 354 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 355 public: 356 TYPEDEF_ELF_TYPES(ELFT) 357 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 358 : DumpStyle<ELFT>(Dumper), W(W) {} 359 360 void printFileHeaders(const ELFO *Obj) override; 361 void printGroupSections(const ELFFile<ELFT> *Obj) override; 362 void printRelocations(const ELFO *Obj) override; 363 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 364 void printSections(const ELFO *Obj) override; 365 void printSymbols(const ELFO *Obj) override; 366 void printDynamicSymbols(const ELFO *Obj) override; 367 void printDynamicRelocations(const ELFO *Obj) override; 368 void printProgramHeaders(const ELFO *Obj) override; 369 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 370 371 private: 372 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 373 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 374 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 375 StringRef StrTable, bool IsDynamic) override; 376 ScopedPrinter &W; 377 }; 378 379 } // namespace 380 381 namespace llvm { 382 383 template <class ELFT> 384 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 385 ScopedPrinter &Writer, 386 std::unique_ptr<ObjDumper> &Result) { 387 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 388 return readobj_error::success; 389 } 390 391 std::error_code createELFDumper(const object::ObjectFile *Obj, 392 ScopedPrinter &Writer, 393 std::unique_ptr<ObjDumper> &Result) { 394 // Little-endian 32-bit 395 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 396 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 397 398 // Big-endian 32-bit 399 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 400 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 401 402 // Little-endian 64-bit 403 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 404 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 405 406 // Big-endian 64-bit 407 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 408 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 409 410 return readobj_error::unsupported_obj_file_format; 411 } 412 413 } // namespace llvm 414 415 // Iterate through the versions needed section, and place each Elf_Vernaux 416 // in the VersionMap according to its index. 417 template <class ELFT> 418 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 419 unsigned vn_size = sec->sh_size; // Size of section in bytes 420 unsigned vn_count = sec->sh_info; // Number of Verneed entries 421 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 422 const char *sec_end = sec_start + vn_size; 423 // The first Verneed entry is at the start of the section. 424 const char *p = sec_start; 425 for (unsigned i = 0; i < vn_count; i++) { 426 if (p + sizeof(Elf_Verneed) > sec_end) 427 report_fatal_error("Section ended unexpectedly while scanning " 428 "version needed records."); 429 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 430 if (vn->vn_version != ELF::VER_NEED_CURRENT) 431 report_fatal_error("Unexpected verneed version"); 432 // Iterate through the Vernaux entries 433 const char *paux = p + vn->vn_aux; 434 for (unsigned j = 0; j < vn->vn_cnt; j++) { 435 if (paux + sizeof(Elf_Vernaux) > sec_end) 436 report_fatal_error("Section ended unexpected while scanning auxiliary " 437 "version needed records."); 438 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 439 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 440 if (index >= VersionMap.size()) 441 VersionMap.resize(index + 1); 442 VersionMap[index] = VersionMapEntry(vna); 443 paux += vna->vna_next; 444 } 445 p += vn->vn_next; 446 } 447 } 448 449 // Iterate through the version definitions, and place each Elf_Verdef 450 // in the VersionMap according to its index. 451 template <class ELFT> 452 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 453 unsigned vd_size = sec->sh_size; // Size of section in bytes 454 unsigned vd_count = sec->sh_info; // Number of Verdef entries 455 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 456 const char *sec_end = sec_start + vd_size; 457 // The first Verdef entry is at the start of the section. 458 const char *p = sec_start; 459 for (unsigned i = 0; i < vd_count; i++) { 460 if (p + sizeof(Elf_Verdef) > sec_end) 461 report_fatal_error("Section ended unexpectedly while scanning " 462 "version definitions."); 463 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 464 if (vd->vd_version != ELF::VER_DEF_CURRENT) 465 report_fatal_error("Unexpected verdef version"); 466 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 467 if (index >= VersionMap.size()) 468 VersionMap.resize(index + 1); 469 VersionMap[index] = VersionMapEntry(vd); 470 p += vd->vd_next; 471 } 472 } 473 474 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 475 // If there is no dynamic symtab or version table, there is nothing to do. 476 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 477 return; 478 479 // Has the VersionMap already been loaded? 480 if (VersionMap.size() > 0) 481 return; 482 483 // The first two version indexes are reserved. 484 // Index 0 is LOCAL, index 1 is GLOBAL. 485 VersionMap.push_back(VersionMapEntry()); 486 VersionMap.push_back(VersionMapEntry()); 487 488 if (dot_gnu_version_d_sec) 489 LoadVersionDefs(dot_gnu_version_d_sec); 490 491 if (dot_gnu_version_r_sec) 492 LoadVersionNeeds(dot_gnu_version_r_sec); 493 } 494 495 template <typename ELFO, class ELFT> 496 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 497 const typename ELFO::Elf_Shdr *Sec, 498 ScopedPrinter &W) { 499 DictScope SS(W, "Version symbols"); 500 if (!Sec) 501 return; 502 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 503 W.printNumber("Section Name", Name, Sec->sh_name); 504 W.printHex("Address", Sec->sh_addr); 505 W.printHex("Offset", Sec->sh_offset); 506 W.printNumber("Link", Sec->sh_link); 507 508 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 509 StringRef StrTable = Dumper->getDynamicStringTable(); 510 511 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 512 ListScope Syms(W, "Symbols"); 513 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 514 DictScope S(W, "Symbol"); 515 std::string FullSymbolName = 516 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 517 W.printNumber("Version", *P); 518 W.printString("Name", FullSymbolName); 519 P += sizeof(typename ELFO::Elf_Half); 520 } 521 } 522 523 static const EnumEntry<unsigned> SymVersionFlags[] = { 524 {"Base", "BASE", VER_FLG_BASE}, 525 {"Weak", "WEAK", VER_FLG_WEAK}, 526 {"Info", "INFO", VER_FLG_INFO}}; 527 528 template <typename ELFO, class ELFT> 529 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 530 const ELFO *Obj, 531 const typename ELFO::Elf_Shdr *Sec, 532 ScopedPrinter &W) { 533 typedef typename ELFO::Elf_Verdef VerDef; 534 typedef typename ELFO::Elf_Verdaux VerdAux; 535 536 DictScope SD(W, "SHT_GNU_verdef"); 537 if (!Sec) 538 return; 539 540 // The number of entries in the section SHT_GNU_verdef 541 // is determined by DT_VERDEFNUM tag. 542 unsigned VerDefsNum = 0; 543 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 544 if (Dyn.d_tag == DT_VERDEFNUM) 545 VerDefsNum = Dyn.d_un.d_val; 546 } 547 const uint8_t *SecStartAddress = 548 (const uint8_t *)Obj->base() + Sec->sh_offset; 549 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 550 const uint8_t *P = SecStartAddress; 551 const typename ELFO::Elf_Shdr *StrTab = 552 unwrapOrError(Obj->getSection(Sec->sh_link)); 553 554 while (VerDefsNum--) { 555 if (P + sizeof(VerDef) > SecEndAddress) 556 report_fatal_error("invalid offset in the section"); 557 558 auto *VD = reinterpret_cast<const VerDef *>(P); 559 DictScope Def(W, "Definition"); 560 W.printNumber("Version", VD->vd_version); 561 W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags)); 562 W.printNumber("Index", VD->vd_ndx); 563 W.printNumber("Hash", VD->vd_hash); 564 W.printString("Name", 565 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 566 VD->getAux()->vda_name))); 567 if (!VD->vd_cnt) 568 report_fatal_error("at least one definition string must exist"); 569 if (VD->vd_cnt > 2) 570 report_fatal_error("more than one predecessor is not expected"); 571 572 if (VD->vd_cnt == 2) { 573 const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next; 574 const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux); 575 W.printString("Predecessor", 576 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 577 Aux->vda_name))); 578 } 579 580 P += VD->vd_next; 581 } 582 } 583 584 template <typename ELFO, class ELFT> 585 static void printVersionDependencySection(ELFDumper<ELFT> *Dumper, 586 const ELFO *Obj, 587 const typename ELFO::Elf_Shdr *Sec, 588 ScopedPrinter &W) { 589 typedef typename ELFO::Elf_Verneed VerNeed; 590 typedef typename ELFO::Elf_Vernaux VernAux; 591 592 DictScope SD(W, "SHT_GNU_verneed"); 593 if (!Sec) 594 return; 595 596 unsigned VerNeedNum = 0; 597 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) 598 if (Dyn.d_tag == DT_VERNEEDNUM) 599 VerNeedNum = Dyn.d_un.d_val; 600 601 const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset; 602 const typename ELFO::Elf_Shdr *StrTab = 603 unwrapOrError(Obj->getSection(Sec->sh_link)); 604 605 const uint8_t *P = SecData; 606 for (unsigned I = 0; I < VerNeedNum; ++I) { 607 const VerNeed *Need = reinterpret_cast<const VerNeed *>(P); 608 DictScope Entry(W, "Dependency"); 609 W.printNumber("Version", Need->vn_version); 610 W.printNumber("Count", Need->vn_cnt); 611 W.printString("FileName", 612 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 613 Need->vn_file))); 614 615 const uint8_t *PAux = P + Need->vn_aux; 616 for (unsigned J = 0; J < Need->vn_cnt; ++J) { 617 const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux); 618 DictScope Entry(W, "Entry"); 619 W.printNumber("Hash", Aux->vna_hash); 620 W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags)); 621 W.printNumber("Index", Aux->vna_other); 622 W.printString("Name", 623 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 624 Aux->vna_name))); 625 PAux += Aux->vna_next; 626 } 627 P += Need->vn_next; 628 } 629 } 630 631 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 632 // Dump version symbol section. 633 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 634 635 // Dump version definition section. 636 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 637 638 // Dump version dependency section. 639 printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W); 640 } 641 642 template <typename ELFT> 643 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 644 const Elf_Sym *symb, 645 bool &IsDefault) const { 646 // This is a dynamic symbol. Look in the GNU symbol version table. 647 if (!dot_gnu_version_sec) { 648 // No version table. 649 IsDefault = false; 650 return StringRef(""); 651 } 652 653 // Determine the position in the symbol table of this entry. 654 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 655 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 656 sizeof(Elf_Sym); 657 658 // Get the corresponding version index entry 659 const Elf_Versym *vs = 660 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index); 661 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 662 663 // Special markers for unversioned symbols. 664 if (version_index == ELF::VER_NDX_LOCAL || 665 version_index == ELF::VER_NDX_GLOBAL) { 666 IsDefault = false; 667 return StringRef(""); 668 } 669 670 // Lookup this symbol in the version table 671 LoadVersionMap(); 672 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 673 reportError("Invalid version entry"); 674 const VersionMapEntry &entry = VersionMap[version_index]; 675 676 // Get the version name string 677 size_t name_offset; 678 if (entry.isVerdef()) { 679 // The first Verdaux entry holds the name. 680 name_offset = entry.getVerdef()->getAux()->vda_name; 681 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 682 } else { 683 name_offset = entry.getVernaux()->vna_name; 684 IsDefault = false; 685 } 686 if (name_offset >= StrTab.size()) 687 reportError("Invalid string offset"); 688 return StringRef(StrTab.data() + name_offset); 689 } 690 691 template <typename ELFT> 692 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 693 StringRef StrTable, 694 bool IsDynamic) const { 695 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 696 if (!IsDynamic) 697 return SymbolName; 698 699 std::string FullSymbolName(SymbolName); 700 701 bool IsDefault; 702 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 703 FullSymbolName += (IsDefault ? "@@" : "@"); 704 FullSymbolName += Version; 705 return FullSymbolName; 706 } 707 708 template <typename ELFO> 709 static void 710 getSectionNameIndex(const ELFO &Obj, const typename ELFO::Elf_Sym *Symbol, 711 const typename ELFO::Elf_Sym *FirstSym, 712 ArrayRef<typename ELFO::Elf_Word> ShndxTable, 713 StringRef &SectionName, unsigned &SectionIndex) { 714 SectionIndex = Symbol->st_shndx; 715 if (Symbol->isUndefined()) 716 SectionName = "Undefined"; 717 else if (Symbol->isProcessorSpecific()) 718 SectionName = "Processor Specific"; 719 else if (Symbol->isOSSpecific()) 720 SectionName = "Operating System Specific"; 721 else if (Symbol->isAbsolute()) 722 SectionName = "Absolute"; 723 else if (Symbol->isCommon()) 724 SectionName = "Common"; 725 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 726 SectionName = "Reserved"; 727 else { 728 if (SectionIndex == SHN_XINDEX) 729 SectionIndex = 730 Obj.getExtendedSymbolTableIndex(Symbol, FirstSym, ShndxTable); 731 const typename ELFO::Elf_Shdr *Sec = 732 unwrapOrError(Obj.getSection(SectionIndex)); 733 SectionName = unwrapOrError(Obj.getSectionName(Sec)); 734 } 735 } 736 737 template <class ELFO> 738 static const typename ELFO::Elf_Shdr * 739 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 740 for (const auto &Shdr : Obj->sections()) 741 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 742 return &Shdr; 743 return nullptr; 744 } 745 746 template <class ELFO> 747 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 748 StringRef Name) { 749 for (const auto &Shdr : Obj.sections()) { 750 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 751 return &Shdr; 752 } 753 return nullptr; 754 } 755 756 static const EnumEntry<unsigned> ElfClass[] = { 757 {"None", "none", ELF::ELFCLASSNONE}, 758 {"32-bit", "ELF32", ELF::ELFCLASS32}, 759 {"64-bit", "ELF64", ELF::ELFCLASS64}, 760 }; 761 762 static const EnumEntry<unsigned> ElfDataEncoding[] = { 763 {"None", "none", ELF::ELFDATANONE}, 764 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 765 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 766 }; 767 768 static const EnumEntry<unsigned> ElfObjectFileType[] = { 769 {"None", "NONE (none)", ELF::ET_NONE}, 770 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 771 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 772 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 773 {"Core", "CORE (Core file)", ELF::ET_CORE}, 774 }; 775 776 static const EnumEntry<unsigned> ElfOSABI[] = { 777 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 778 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 779 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 780 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 781 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 782 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 783 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 784 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 785 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 786 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 787 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 788 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 789 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 790 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 791 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 792 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 793 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 794 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 795 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX}, 796 {"ARM", "ARM", ELF::ELFOSABI_ARM}, 797 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 798 }; 799 800 static const EnumEntry<unsigned> ElfMachineType[] = { 801 ENUM_ENT(EM_NONE, "None"), 802 ENUM_ENT(EM_M32, "WE32100"), 803 ENUM_ENT(EM_SPARC, "Sparc"), 804 ENUM_ENT(EM_386, "Intel 80386"), 805 ENUM_ENT(EM_68K, "MC68000"), 806 ENUM_ENT(EM_88K, "MC88000"), 807 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 808 ENUM_ENT(EM_860, "Intel 80860"), 809 ENUM_ENT(EM_MIPS, "MIPS R3000"), 810 ENUM_ENT(EM_S370, "IBM System/370"), 811 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 812 ENUM_ENT(EM_PARISC, "HPPA"), 813 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 814 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 815 ENUM_ENT(EM_960, "Intel 80960"), 816 ENUM_ENT(EM_PPC, "PowerPC"), 817 ENUM_ENT(EM_PPC64, "PowerPC64"), 818 ENUM_ENT(EM_S390, "IBM S/390"), 819 ENUM_ENT(EM_SPU, "SPU"), 820 ENUM_ENT(EM_V800, "NEC V800 series"), 821 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 822 ENUM_ENT(EM_RH32, "TRW RH-32"), 823 ENUM_ENT(EM_RCE, "Motorola RCE"), 824 ENUM_ENT(EM_ARM, "ARM"), 825 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 826 ENUM_ENT(EM_SH, "Hitachi SH"), 827 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 828 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 829 ENUM_ENT(EM_ARC, "ARC"), 830 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 831 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 832 ENUM_ENT(EM_H8S, "Hitachi H8S"), 833 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 834 ENUM_ENT(EM_IA_64, "Intel IA-64"), 835 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 836 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 837 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 838 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 839 ENUM_ENT(EM_PCP, "Siemens PCP"), 840 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 841 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 842 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 843 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 844 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 845 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 846 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 847 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 848 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 849 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 850 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 851 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 852 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 853 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 854 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 855 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 856 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 857 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 858 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 859 ENUM_ENT(EM_VAX, "Digital VAX"), 860 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 861 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 862 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 863 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 864 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 865 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 866 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 867 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 868 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 869 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 870 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 871 ENUM_ENT(EM_V850, "NEC v850"), 872 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 873 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 874 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 875 ENUM_ENT(EM_PJ, "picoJava"), 876 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 877 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 878 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 879 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 880 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 881 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 882 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 883 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 884 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 885 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 886 ENUM_ENT(EM_MAX, "MAX Processor"), 887 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 888 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 889 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 890 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 891 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 892 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 893 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 894 ENUM_ENT(EM_UNICORE, "Unicore"), 895 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 896 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 897 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 898 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 899 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 900 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 901 ENUM_ENT(EM_M16C, "Renesas M16C"), 902 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 903 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 904 ENUM_ENT(EM_M32C, "Renesas M32C"), 905 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 906 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 907 ENUM_ENT(EM_SHARC, "EM_SHARC"), 908 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 909 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 910 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 911 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 912 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 913 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 914 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 915 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 916 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 917 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 918 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 919 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 920 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 921 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 922 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 923 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 924 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 925 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 926 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 927 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 928 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 929 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 930 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 931 ENUM_ENT(EM_RX, "Renesas RX"), 932 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 933 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 934 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 935 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 936 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 937 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 938 ENUM_ENT(EM_L10M, "EM_L10M"), 939 ENUM_ENT(EM_K10M, "EM_K10M"), 940 ENUM_ENT(EM_AARCH64, "AArch64"), 941 ENUM_ENT(EM_AVR32, "Atmel AVR 8-bit microcontroller"), 942 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 943 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 944 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 945 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 946 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 947 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 948 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 949 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 950 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 951 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 952 ENUM_ENT(EM_RL78, "Renesas RL78"), 953 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 954 ENUM_ENT(EM_78KOR, "EM_78KOR"), 955 ENUM_ENT(EM_56800EX, "EM_56800EX"), 956 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 957 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 958 ENUM_ENT(EM_LANAI, "EM_LANAI"), 959 }; 960 961 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 962 {"Local", "LOCAL", ELF::STB_LOCAL}, 963 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 964 {"Weak", "WEAK", ELF::STB_WEAK}, 965 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 966 967 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 968 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 969 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 970 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 971 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 972 973 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 974 {"None", "NOTYPE", ELF::STT_NOTYPE}, 975 {"Object", "OBJECT", ELF::STT_OBJECT}, 976 {"Function", "FUNC", ELF::STT_FUNC}, 977 {"Section", "SECTION", ELF::STT_SECTION}, 978 {"File", "FILE", ELF::STT_FILE}, 979 {"Common", "COMMON", ELF::STT_COMMON}, 980 {"TLS", "TLS", ELF::STT_TLS}, 981 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 982 983 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 984 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL }, 985 { "AMDGPU_HSA_INDIRECT_FUNCTION", ELF::STT_AMDGPU_HSA_INDIRECT_FUNCTION }, 986 { "AMDGPU_HSA_METADATA", ELF::STT_AMDGPU_HSA_METADATA } 987 }; 988 989 static const char *getElfSectionType(unsigned Arch, unsigned Type) { 990 switch (Arch) { 991 case ELF::EM_ARM: 992 switch (Type) { 993 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX); 994 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP); 995 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES); 996 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY); 997 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION); 998 } 999 case ELF::EM_HEXAGON: 1000 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); } 1001 case ELF::EM_X86_64: 1002 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); } 1003 case ELF::EM_MIPS: 1004 case ELF::EM_MIPS_RS3_LE: 1005 switch (Type) { 1006 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO); 1007 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS); 1008 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS); 1009 } 1010 } 1011 1012 switch (Type) { 1013 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL ); 1014 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS ); 1015 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB ); 1016 LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB ); 1017 LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA ); 1018 LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH ); 1019 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC ); 1020 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE ); 1021 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS ); 1022 LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL ); 1023 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB ); 1024 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM ); 1025 LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY ); 1026 LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY ); 1027 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY ); 1028 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP ); 1029 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX ); 1030 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES ); 1031 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH ); 1032 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef ); 1033 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed ); 1034 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym ); 1035 default: return ""; 1036 } 1037 } 1038 1039 static const char *getGroupType(uint32_t Flag) { 1040 if (Flag & ELF::GRP_COMDAT) 1041 return "COMDAT"; 1042 else 1043 return "(unknown)"; 1044 } 1045 1046 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1047 ENUM_ENT(SHF_WRITE, "W"), 1048 ENUM_ENT(SHF_ALLOC, "A"), 1049 ENUM_ENT(SHF_EXCLUDE, "E"), 1050 ENUM_ENT(SHF_EXECINSTR, "X"), 1051 ENUM_ENT(SHF_MERGE, "M"), 1052 ENUM_ENT(SHF_STRINGS, "S"), 1053 ENUM_ENT(SHF_INFO_LINK, "I"), 1054 ENUM_ENT(SHF_LINK_ORDER, "L"), 1055 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 1056 ENUM_ENT(SHF_GROUP, "G"), 1057 ENUM_ENT(SHF_TLS, "T"), 1058 ENUM_ENT(SHF_MASKOS, "o"), 1059 ENUM_ENT(SHF_MASKPROC, "p"), 1060 ENUM_ENT_1(SHF_COMPRESSED), 1061 }; 1062 1063 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1064 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1065 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1066 }; 1067 1068 static const EnumEntry<unsigned> ElfAMDGPUSectionFlags[] = { 1069 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_GLOBAL), 1070 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_READONLY), 1071 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_CODE), 1072 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_AGENT) 1073 }; 1074 1075 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1076 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1077 }; 1078 1079 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1080 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1081 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1082 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1083 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1084 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1085 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1086 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1087 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1088 }; 1089 1090 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1091 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1092 }; 1093 1094 static std::string getGNUFlags(uint64_t Flags) { 1095 std::string Str; 1096 for (auto Entry : ElfSectionFlags) { 1097 uint64_t Flag = Entry.Value & Flags; 1098 Flags &= ~Entry.Value; 1099 switch (Flag) { 1100 case ELF::SHF_WRITE: 1101 case ELF::SHF_ALLOC: 1102 case ELF::SHF_EXECINSTR: 1103 case ELF::SHF_MERGE: 1104 case ELF::SHF_STRINGS: 1105 case ELF::SHF_INFO_LINK: 1106 case ELF::SHF_LINK_ORDER: 1107 case ELF::SHF_OS_NONCONFORMING: 1108 case ELF::SHF_GROUP: 1109 case ELF::SHF_TLS: 1110 case ELF::SHF_EXCLUDE: 1111 Str += Entry.AltName; 1112 break; 1113 default: 1114 if (Flag & ELF::SHF_MASKOS) 1115 Str += "o"; 1116 else if (Flag & ELF::SHF_MASKPROC) 1117 Str += "p"; 1118 else if (Flag) 1119 Str += "x"; 1120 } 1121 } 1122 return Str; 1123 } 1124 1125 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1126 // Check potentially overlapped processor-specific 1127 // program header type. 1128 switch (Arch) { 1129 case ELF::EM_AMDGPU: 1130 switch (Type) { 1131 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1132 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1133 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1134 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1135 } 1136 case ELF::EM_ARM: 1137 switch (Type) { 1138 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1139 } 1140 case ELF::EM_MIPS: 1141 case ELF::EM_MIPS_RS3_LE: 1142 switch (Type) { 1143 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1144 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1145 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1146 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1147 } 1148 } 1149 1150 switch (Type) { 1151 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1152 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1153 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1154 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1155 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1156 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1157 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1158 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1159 1160 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1161 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1162 1163 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1164 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1165 default: return ""; 1166 } 1167 } 1168 1169 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1170 switch (Type) { 1171 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1172 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1173 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1174 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1175 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1176 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1177 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1178 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1179 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1180 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1181 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1182 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1183 default: 1184 // All machine specific PT_* types 1185 switch (Arch) { 1186 case ELF::EM_AMDGPU: 1187 switch (Type) { 1188 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 1189 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 1190 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 1191 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 1192 } 1193 return ""; 1194 case ELF::EM_ARM: 1195 if (Type == ELF::PT_ARM_EXIDX) 1196 return "EXIDX"; 1197 return ""; 1198 case ELF::EM_MIPS: 1199 case ELF::EM_MIPS_RS3_LE: 1200 switch (Type) { 1201 case PT_MIPS_REGINFO: 1202 return "REGINFO"; 1203 case PT_MIPS_RTPROC: 1204 return "RTPROC"; 1205 case PT_MIPS_OPTIONS: 1206 return "OPTIONS"; 1207 case PT_MIPS_ABIFLAGS: 1208 return "ABIFLAGS"; 1209 } 1210 return ""; 1211 } 1212 } 1213 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1214 } 1215 1216 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1217 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1218 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1219 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1220 }; 1221 1222 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1223 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1224 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1225 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1226 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1227 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1228 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1229 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1230 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1231 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1232 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1233 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1234 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1235 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1236 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1237 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1238 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1239 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1240 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1241 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1242 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1243 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1244 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1245 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1246 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1247 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1248 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1249 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1250 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1251 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1252 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1253 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1254 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1255 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1256 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1257 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1258 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1259 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1260 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1261 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1262 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1263 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1264 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1265 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1266 }; 1267 1268 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1269 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1270 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1271 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1272 }; 1273 1274 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1275 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1276 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1277 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1278 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1279 }; 1280 1281 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1282 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1283 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1284 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1285 }; 1286 1287 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1288 switch (Odk) { 1289 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1290 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1291 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1292 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1293 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1294 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1295 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1296 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1297 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1298 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1299 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1300 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1301 default: 1302 return "Unknown"; 1303 } 1304 } 1305 1306 template <typename ELFT> 1307 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1308 : ObjDumper(Writer), Obj(Obj) { 1309 1310 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1311 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 1312 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1313 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1314 continue; 1315 } 1316 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1317 continue; 1318 LoadSegments.push_back(&Phdr); 1319 } 1320 1321 for (const Elf_Shdr &Sec : Obj->sections()) { 1322 switch (Sec.sh_type) { 1323 case ELF::SHT_SYMTAB: 1324 if (DotSymtabSec != nullptr) 1325 reportError("Multilpe SHT_SYMTAB"); 1326 DotSymtabSec = &Sec; 1327 break; 1328 case ELF::SHT_DYNSYM: 1329 if (DynSymRegion.Size) 1330 reportError("Multilpe SHT_DYNSYM"); 1331 DynSymRegion = createDRIFrom(&Sec); 1332 // This is only used (if Elf_Shdr present)for naming section in GNU style 1333 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1334 break; 1335 case ELF::SHT_SYMTAB_SHNDX: 1336 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1337 break; 1338 case ELF::SHT_GNU_versym: 1339 if (dot_gnu_version_sec != nullptr) 1340 reportError("Multiple SHT_GNU_versym"); 1341 dot_gnu_version_sec = &Sec; 1342 break; 1343 case ELF::SHT_GNU_verdef: 1344 if (dot_gnu_version_d_sec != nullptr) 1345 reportError("Multiple SHT_GNU_verdef"); 1346 dot_gnu_version_d_sec = &Sec; 1347 break; 1348 case ELF::SHT_GNU_verneed: 1349 if (dot_gnu_version_r_sec != nullptr) 1350 reportError("Multilpe SHT_GNU_verneed"); 1351 dot_gnu_version_r_sec = &Sec; 1352 break; 1353 } 1354 } 1355 1356 parseDynamicTable(LoadSegments); 1357 1358 if (opts::Output == opts::GNU) 1359 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1360 else 1361 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1362 } 1363 1364 template <typename ELFT> 1365 void ELFDumper<ELFT>::parseDynamicTable( 1366 ArrayRef<const Elf_Phdr *> LoadSegments) { 1367 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1368 const Elf_Phdr *const *I = std::upper_bound( 1369 LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>); 1370 if (I == LoadSegments.begin()) 1371 report_fatal_error("Virtual address is not in any segment"); 1372 --I; 1373 const Elf_Phdr &Phdr = **I; 1374 uint64_t Delta = VAddr - Phdr.p_vaddr; 1375 if (Delta >= Phdr.p_filesz) 1376 report_fatal_error("Virtual address is not in any segment"); 1377 return Obj->base() + Phdr.p_offset + Delta; 1378 }; 1379 1380 uint64_t SONameOffset = 0; 1381 const char *StringTableBegin = nullptr; 1382 uint64_t StringTableSize = 0; 1383 for (const Elf_Dyn &Dyn : dynamic_table()) { 1384 switch (Dyn.d_tag) { 1385 case ELF::DT_HASH: 1386 HashTable = 1387 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1388 break; 1389 case ELF::DT_GNU_HASH: 1390 GnuHashTable = 1391 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1392 break; 1393 case ELF::DT_STRTAB: 1394 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1395 break; 1396 case ELF::DT_STRSZ: 1397 StringTableSize = Dyn.getVal(); 1398 break; 1399 case ELF::DT_SYMTAB: 1400 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1401 DynSymRegion.EntSize = sizeof(Elf_Sym); 1402 break; 1403 case ELF::DT_RELA: 1404 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1405 break; 1406 case ELF::DT_RELASZ: 1407 DynRelaRegion.Size = Dyn.getVal(); 1408 break; 1409 case ELF::DT_RELAENT: 1410 DynRelaRegion.EntSize = Dyn.getVal(); 1411 break; 1412 case ELF::DT_SONAME: 1413 SONameOffset = Dyn.getVal(); 1414 break; 1415 case ELF::DT_REL: 1416 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1417 break; 1418 case ELF::DT_RELSZ: 1419 DynRelRegion.Size = Dyn.getVal(); 1420 break; 1421 case ELF::DT_RELENT: 1422 DynRelRegion.EntSize = Dyn.getVal(); 1423 break; 1424 case ELF::DT_PLTREL: 1425 if (Dyn.getVal() == DT_REL) 1426 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1427 else if (Dyn.getVal() == DT_RELA) 1428 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1429 else 1430 reportError(Twine("unknown DT_PLTREL value of ") + 1431 Twine((uint64_t)Dyn.getVal())); 1432 break; 1433 case ELF::DT_JMPREL: 1434 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1435 break; 1436 case ELF::DT_PLTRELSZ: 1437 DynPLTRelRegion.Size = Dyn.getVal(); 1438 break; 1439 } 1440 } 1441 if (StringTableBegin) 1442 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1443 if (SONameOffset) 1444 SOName = getDynamicString(SONameOffset); 1445 } 1446 1447 template <typename ELFT> 1448 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1449 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1450 } 1451 1452 template <typename ELFT> 1453 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1454 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1455 } 1456 1457 template<class ELFT> 1458 void ELFDumper<ELFT>::printFileHeaders() { 1459 ELFDumperStyle->printFileHeaders(Obj); 1460 } 1461 1462 template<class ELFT> 1463 void ELFDumper<ELFT>::printSections() { 1464 ELFDumperStyle->printSections(Obj); 1465 } 1466 1467 template<class ELFT> 1468 void ELFDumper<ELFT>::printRelocations() { 1469 ELFDumperStyle->printRelocations(Obj); 1470 } 1471 1472 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1473 ELFDumperStyle->printProgramHeaders(Obj); 1474 } 1475 1476 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1477 ELFDumperStyle->printDynamicRelocations(Obj); 1478 } 1479 1480 template<class ELFT> 1481 void ELFDumper<ELFT>::printSymbols() { 1482 ELFDumperStyle->printSymbols(Obj); 1483 } 1484 1485 template<class ELFT> 1486 void ELFDumper<ELFT>::printDynamicSymbols() { 1487 ELFDumperStyle->printDynamicSymbols(Obj); 1488 } 1489 1490 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1491 ELFDumperStyle->printHashHistogram(Obj); 1492 } 1493 #define LLVM_READOBJ_TYPE_CASE(name) \ 1494 case DT_##name: return #name 1495 1496 static const char *getTypeString(uint64_t Type) { 1497 switch (Type) { 1498 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1499 LLVM_READOBJ_TYPE_CASE(DEBUG); 1500 LLVM_READOBJ_TYPE_CASE(FINI); 1501 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1502 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1503 LLVM_READOBJ_TYPE_CASE(FLAGS); 1504 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1505 LLVM_READOBJ_TYPE_CASE(HASH); 1506 LLVM_READOBJ_TYPE_CASE(INIT); 1507 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1508 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1509 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1510 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1511 LLVM_READOBJ_TYPE_CASE(JMPREL); 1512 LLVM_READOBJ_TYPE_CASE(NEEDED); 1513 LLVM_READOBJ_TYPE_CASE(NULL); 1514 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1515 LLVM_READOBJ_TYPE_CASE(PLTREL); 1516 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1517 LLVM_READOBJ_TYPE_CASE(REL); 1518 LLVM_READOBJ_TYPE_CASE(RELA); 1519 LLVM_READOBJ_TYPE_CASE(RELENT); 1520 LLVM_READOBJ_TYPE_CASE(RELSZ); 1521 LLVM_READOBJ_TYPE_CASE(RELAENT); 1522 LLVM_READOBJ_TYPE_CASE(RELASZ); 1523 LLVM_READOBJ_TYPE_CASE(RPATH); 1524 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1525 LLVM_READOBJ_TYPE_CASE(SONAME); 1526 LLVM_READOBJ_TYPE_CASE(STRSZ); 1527 LLVM_READOBJ_TYPE_CASE(STRTAB); 1528 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1529 LLVM_READOBJ_TYPE_CASE(SYMENT); 1530 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1531 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1532 LLVM_READOBJ_TYPE_CASE(VERDEF); 1533 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1534 LLVM_READOBJ_TYPE_CASE(VERNEED); 1535 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1536 LLVM_READOBJ_TYPE_CASE(VERSYM); 1537 LLVM_READOBJ_TYPE_CASE(RELACOUNT); 1538 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1539 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1540 LLVM_READOBJ_TYPE_CASE(TLSDESC_PLT); 1541 LLVM_READOBJ_TYPE_CASE(TLSDESC_GOT); 1542 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1543 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1544 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1545 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1546 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1547 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1548 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1549 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1550 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1551 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1552 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1553 default: return "unknown"; 1554 } 1555 } 1556 1557 #undef LLVM_READOBJ_TYPE_CASE 1558 1559 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1560 { #enum, prefix##_##enum } 1561 1562 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1563 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1564 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1565 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1566 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1567 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1568 }; 1569 1570 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1571 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1572 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1573 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1574 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1575 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1576 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1577 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1578 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1579 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1580 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1581 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1582 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1583 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1584 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1585 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1586 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1587 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1588 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1589 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1590 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1591 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1592 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1593 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1594 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1595 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1596 }; 1597 1598 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1599 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1600 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1601 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1602 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1603 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1604 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1605 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1606 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1607 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1608 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1609 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1610 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1611 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1612 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1613 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1614 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1615 }; 1616 1617 #undef LLVM_READOBJ_DT_FLAG_ENT 1618 1619 template <typename T, typename TFlag> 1620 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1621 typedef EnumEntry<TFlag> FlagEntry; 1622 typedef SmallVector<FlagEntry, 10> FlagVector; 1623 FlagVector SetFlags; 1624 1625 for (const auto &Flag : Flags) { 1626 if (Flag.Value == 0) 1627 continue; 1628 1629 if ((Value & Flag.Value) == Flag.Value) 1630 SetFlags.push_back(Flag); 1631 } 1632 1633 for (const auto &Flag : SetFlags) { 1634 OS << Flag.Name << " "; 1635 } 1636 } 1637 1638 template <class ELFT> 1639 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1640 if (Value >= DynamicStringTable.size()) 1641 reportError("Invalid dynamic string table reference"); 1642 return StringRef(DynamicStringTable.data() + Value); 1643 } 1644 1645 template <class ELFT> 1646 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1647 raw_ostream &OS = W.getOStream(); 1648 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1649 switch (Type) { 1650 case DT_PLTREL: 1651 if (Value == DT_REL) { 1652 OS << "REL"; 1653 break; 1654 } else if (Value == DT_RELA) { 1655 OS << "RELA"; 1656 break; 1657 } 1658 // Fallthrough. 1659 case DT_PLTGOT: 1660 case DT_HASH: 1661 case DT_STRTAB: 1662 case DT_SYMTAB: 1663 case DT_RELA: 1664 case DT_INIT: 1665 case DT_FINI: 1666 case DT_REL: 1667 case DT_JMPREL: 1668 case DT_INIT_ARRAY: 1669 case DT_FINI_ARRAY: 1670 case DT_PREINIT_ARRAY: 1671 case DT_DEBUG: 1672 case DT_VERDEF: 1673 case DT_VERNEED: 1674 case DT_VERSYM: 1675 case DT_GNU_HASH: 1676 case DT_NULL: 1677 case DT_MIPS_BASE_ADDRESS: 1678 case DT_MIPS_GOTSYM: 1679 case DT_MIPS_RLD_MAP: 1680 case DT_MIPS_RLD_MAP_REL: 1681 case DT_MIPS_PLTGOT: 1682 case DT_MIPS_OPTIONS: 1683 OS << format(ConvChar, Value); 1684 break; 1685 case DT_RELACOUNT: 1686 case DT_RELCOUNT: 1687 case DT_VERDEFNUM: 1688 case DT_VERNEEDNUM: 1689 case DT_MIPS_RLD_VERSION: 1690 case DT_MIPS_LOCAL_GOTNO: 1691 case DT_MIPS_SYMTABNO: 1692 case DT_MIPS_UNREFEXTNO: 1693 OS << Value; 1694 break; 1695 case DT_PLTRELSZ: 1696 case DT_RELASZ: 1697 case DT_RELAENT: 1698 case DT_STRSZ: 1699 case DT_SYMENT: 1700 case DT_RELSZ: 1701 case DT_RELENT: 1702 case DT_INIT_ARRAYSZ: 1703 case DT_FINI_ARRAYSZ: 1704 case DT_PREINIT_ARRAYSZ: 1705 OS << Value << " (bytes)"; 1706 break; 1707 case DT_NEEDED: 1708 OS << "SharedLibrary (" << getDynamicString(Value) << ")"; 1709 break; 1710 case DT_SONAME: 1711 OS << "LibrarySoname (" << getDynamicString(Value) << ")"; 1712 break; 1713 case DT_RPATH: 1714 case DT_RUNPATH: 1715 OS << getDynamicString(Value); 1716 break; 1717 case DT_MIPS_FLAGS: 1718 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1719 break; 1720 case DT_FLAGS: 1721 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1722 break; 1723 case DT_FLAGS_1: 1724 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1725 break; 1726 default: 1727 OS << format(ConvChar, Value); 1728 break; 1729 } 1730 } 1731 1732 template<class ELFT> 1733 void ELFDumper<ELFT>::printUnwindInfo() { 1734 W.startLine() << "UnwindInfo not implemented.\n"; 1735 } 1736 1737 namespace { 1738 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1739 const unsigned Machine = Obj->getHeader()->e_machine; 1740 if (Machine == EM_ARM) { 1741 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1742 W, Obj, DotSymtabSec); 1743 return Ctx.PrintUnwindInformation(); 1744 } 1745 W.startLine() << "UnwindInfo not implemented.\n"; 1746 } 1747 } 1748 1749 template<class ELFT> 1750 void ELFDumper<ELFT>::printDynamicTable() { 1751 auto I = dynamic_table().begin(); 1752 auto E = dynamic_table().end(); 1753 1754 if (I == E) 1755 return; 1756 1757 --E; 1758 while (I != E && E->getTag() == ELF::DT_NULL) 1759 --E; 1760 if (E->getTag() != ELF::DT_NULL) 1761 ++E; 1762 ++E; 1763 1764 ptrdiff_t Total = std::distance(I, E); 1765 if (Total == 0) 1766 return; 1767 1768 raw_ostream &OS = W.getOStream(); 1769 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1770 1771 bool Is64 = ELFT::Is64Bits; 1772 1773 W.startLine() 1774 << " Tag" << (Is64 ? " " : " ") << "Type" 1775 << " " << "Name/Value\n"; 1776 while (I != E) { 1777 const Elf_Dyn &Entry = *I; 1778 uintX_t Tag = Entry.getTag(); 1779 ++I; 1780 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1781 << format("%-21s", getTypeString(Tag)); 1782 printValue(Tag, Entry.getVal()); 1783 OS << "\n"; 1784 } 1785 1786 W.startLine() << "]\n"; 1787 } 1788 1789 template<class ELFT> 1790 void ELFDumper<ELFT>::printNeededLibraries() { 1791 ListScope D(W, "NeededLibraries"); 1792 1793 typedef std::vector<StringRef> LibsTy; 1794 LibsTy Libs; 1795 1796 for (const auto &Entry : dynamic_table()) 1797 if (Entry.d_tag == ELF::DT_NEEDED) 1798 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1799 1800 std::stable_sort(Libs.begin(), Libs.end()); 1801 1802 for (const auto &L : Libs) { 1803 outs() << " " << L << "\n"; 1804 } 1805 } 1806 1807 1808 template <typename ELFT> 1809 void ELFDumper<ELFT>::printHashTable() { 1810 DictScope D(W, "HashTable"); 1811 if (!HashTable) 1812 return; 1813 W.printNumber("Num Buckets", HashTable->nbucket); 1814 W.printNumber("Num Chains", HashTable->nchain); 1815 W.printList("Buckets", HashTable->buckets()); 1816 W.printList("Chains", HashTable->chains()); 1817 } 1818 1819 template <typename ELFT> 1820 void ELFDumper<ELFT>::printGnuHashTable() { 1821 DictScope D(W, "GnuHashTable"); 1822 if (!GnuHashTable) 1823 return; 1824 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1825 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1826 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1827 W.printNumber("Shift Count", GnuHashTable->shift2); 1828 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1829 W.printList("Buckets", GnuHashTable->buckets()); 1830 Elf_Sym_Range Syms = dynamic_symbols(); 1831 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1832 if (!NumSyms) 1833 reportError("No dynamic symbol section"); 1834 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1835 } 1836 1837 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1838 outs() << "LoadName: " << SOName << '\n'; 1839 } 1840 1841 template <class ELFT> 1842 void ELFDumper<ELFT>::printAttributes() { 1843 W.startLine() << "Attributes not implemented.\n"; 1844 } 1845 1846 namespace { 1847 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1848 if (Obj->getHeader()->e_machine != EM_ARM) { 1849 W.startLine() << "Attributes not implemented.\n"; 1850 return; 1851 } 1852 1853 DictScope BA(W, "BuildAttributes"); 1854 for (const ELFO::Elf_Shdr &Sec : Obj->sections()) { 1855 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1856 continue; 1857 1858 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1859 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1860 errs() << "unrecognised FormatVersion: 0x" << utohexstr(Contents[0]) 1861 << '\n'; 1862 continue; 1863 } 1864 1865 W.printHex("FormatVersion", Contents[0]); 1866 if (Contents.size() == 1) 1867 continue; 1868 1869 ARMAttributeParser(W).Parse(Contents); 1870 } 1871 } 1872 } 1873 1874 namespace { 1875 template <class ELFT> class MipsGOTParser { 1876 public: 1877 typedef object::ELFFile<ELFT> ELFO; 1878 typedef typename ELFO::Elf_Shdr Elf_Shdr; 1879 typedef typename ELFO::Elf_Sym Elf_Sym; 1880 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 1881 typedef typename ELFO::Elf_Addr GOTEntry; 1882 typedef typename ELFO::Elf_Rel Elf_Rel; 1883 typedef typename ELFO::Elf_Rela Elf_Rela; 1884 1885 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1886 Elf_Dyn_Range DynTable, ScopedPrinter &W); 1887 1888 void parseGOT(); 1889 void parsePLT(); 1890 1891 private: 1892 ELFDumper<ELFT> *Dumper; 1893 const ELFO *Obj; 1894 ScopedPrinter &W; 1895 llvm::Optional<uint64_t> DtPltGot; 1896 llvm::Optional<uint64_t> DtLocalGotNum; 1897 llvm::Optional<uint64_t> DtGotSym; 1898 llvm::Optional<uint64_t> DtMipsPltGot; 1899 llvm::Optional<uint64_t> DtJmpRel; 1900 1901 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1902 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1903 1904 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1905 const GOTEntry *It); 1906 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1907 const GOTEntry *It, const Elf_Sym *Sym, 1908 StringRef StrTable, bool IsDynamic); 1909 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1910 const GOTEntry *It, StringRef Purpose); 1911 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1912 const GOTEntry *It, StringRef StrTable, 1913 const Elf_Sym *Sym); 1914 }; 1915 } 1916 1917 template <class ELFT> 1918 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1919 Elf_Dyn_Range DynTable, ScopedPrinter &W) 1920 : Dumper(Dumper), Obj(Obj), W(W) { 1921 for (const auto &Entry : DynTable) { 1922 switch (Entry.getTag()) { 1923 case ELF::DT_PLTGOT: 1924 DtPltGot = Entry.getVal(); 1925 break; 1926 case ELF::DT_MIPS_LOCAL_GOTNO: 1927 DtLocalGotNum = Entry.getVal(); 1928 break; 1929 case ELF::DT_MIPS_GOTSYM: 1930 DtGotSym = Entry.getVal(); 1931 break; 1932 case ELF::DT_MIPS_PLTGOT: 1933 DtMipsPltGot = Entry.getVal(); 1934 break; 1935 case ELF::DT_JMPREL: 1936 DtJmpRel = Entry.getVal(); 1937 break; 1938 } 1939 } 1940 } 1941 1942 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1943 // See "Global Offset Table" in Chapter 5 in the following document 1944 // for detailed GOT description. 1945 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1946 if (!DtPltGot) { 1947 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1948 return; 1949 } 1950 if (!DtLocalGotNum) { 1951 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1952 return; 1953 } 1954 if (!DtGotSym) { 1955 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1956 return; 1957 } 1958 1959 StringRef StrTable = Dumper->getDynamicStringTable(); 1960 const Elf_Sym *DynSymBegin = Dumper->dynamic_symbols().begin(); 1961 const Elf_Sym *DynSymEnd = Dumper->dynamic_symbols().end(); 1962 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1963 1964 if (*DtGotSym > DynSymTotal) 1965 report_fatal_error("MIPS_GOTSYM exceeds a number of dynamic symbols"); 1966 1967 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1968 1969 if (*DtLocalGotNum + GlobalGotNum == 0) { 1970 W.startLine() << "GOT is empty.\n"; 1971 return; 1972 } 1973 1974 const Elf_Shdr *GOTShdr = findNotEmptySectionByAddress(Obj, *DtPltGot); 1975 if (!GOTShdr) 1976 report_fatal_error("There is no not empty GOT section at 0x" + 1977 Twine::utohexstr(*DtPltGot)); 1978 1979 ArrayRef<uint8_t> GOT = unwrapOrError(Obj->getSectionContents(GOTShdr)); 1980 1981 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(GOT)) 1982 report_fatal_error("Number of GOT entries exceeds the size of GOT section"); 1983 1984 const GOTEntry *GotBegin = makeGOTIter(GOT, 0); 1985 const GOTEntry *GotLocalEnd = makeGOTIter(GOT, *DtLocalGotNum); 1986 const GOTEntry *It = GotBegin; 1987 1988 DictScope GS(W, "Primary GOT"); 1989 1990 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 1991 { 1992 ListScope RS(W, "Reserved entries"); 1993 1994 { 1995 DictScope D(W, "Entry"); 1996 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1997 W.printString("Purpose", StringRef("Lazy resolver")); 1998 } 1999 2000 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 2001 DictScope D(W, "Entry"); 2002 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 2003 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 2004 } 2005 } 2006 { 2007 ListScope LS(W, "Local entries"); 2008 for (; It != GotLocalEnd; ++It) { 2009 DictScope D(W, "Entry"); 2010 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 2011 } 2012 } 2013 { 2014 ListScope GS(W, "Global entries"); 2015 2016 const GOTEntry *GotGlobalEnd = 2017 makeGOTIter(GOT, *DtLocalGotNum + GlobalGotNum); 2018 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 2019 for (; It != GotGlobalEnd; ++It) { 2020 DictScope D(W, "Entry"); 2021 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, StrTable, 2022 true); 2023 } 2024 } 2025 2026 std::size_t SpecGotNum = getGOTTotal(GOT) - *DtLocalGotNum - GlobalGotNum; 2027 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 2028 } 2029 2030 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 2031 if (!DtMipsPltGot) { 2032 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 2033 return; 2034 } 2035 if (!DtJmpRel) { 2036 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 2037 return; 2038 } 2039 2040 const Elf_Shdr *PLTShdr = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2041 if (!PLTShdr) 2042 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2043 Twine::utohexstr(*DtMipsPltGot)); 2044 ArrayRef<uint8_t> PLT = unwrapOrError(Obj->getSectionContents(PLTShdr)); 2045 2046 const Elf_Shdr *PLTRelShdr = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2047 if (!PLTRelShdr) 2048 report_fatal_error("There is no not empty RELPLT section at 0x" + 2049 Twine::utohexstr(*DtJmpRel)); 2050 const Elf_Shdr *SymTable = 2051 unwrapOrError(Obj->getSection(PLTRelShdr->sh_link)); 2052 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTable)); 2053 2054 const GOTEntry *PLTBegin = makeGOTIter(PLT, 0); 2055 const GOTEntry *PLTEnd = makeGOTIter(PLT, getGOTTotal(PLT)); 2056 const GOTEntry *It = PLTBegin; 2057 2058 DictScope GS(W, "PLT GOT"); 2059 { 2060 ListScope RS(W, "Reserved entries"); 2061 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 2062 if (It != PLTEnd) 2063 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 2064 } 2065 { 2066 ListScope GS(W, "Entries"); 2067 2068 switch (PLTRelShdr->sh_type) { 2069 case ELF::SHT_REL: 2070 for (const Elf_Rel *RI = Obj->rel_begin(PLTRelShdr), 2071 *RE = Obj->rel_end(PLTRelShdr); 2072 RI != RE && It != PLTEnd; ++RI, ++It) { 2073 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 2074 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2075 } 2076 break; 2077 case ELF::SHT_RELA: 2078 for (const Elf_Rela *RI = Obj->rela_begin(PLTRelShdr), 2079 *RE = Obj->rela_end(PLTRelShdr); 2080 RI != RE && It != PLTEnd; ++RI, ++It) { 2081 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 2082 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, StrTable, Sym); 2083 } 2084 break; 2085 } 2086 } 2087 } 2088 2089 template <class ELFT> 2090 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 2091 return GOT.size() / sizeof(GOTEntry); 2092 } 2093 2094 template <class ELFT> 2095 const typename MipsGOTParser<ELFT>::GOTEntry * 2096 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 2097 const char *Data = reinterpret_cast<const char *>(GOT.data()); 2098 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 2099 } 2100 2101 template <class ELFT> 2102 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 2103 const GOTEntry *BeginIt, 2104 const GOTEntry *It) { 2105 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2106 W.printHex("Address", GotAddr + Offset); 2107 W.printNumber("Access", Offset - 0x7ff0); 2108 W.printHex("Initial", *It); 2109 } 2110 2111 template <class ELFT> 2112 void MipsGOTParser<ELFT>::printGlobalGotEntry( 2113 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 2114 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 2115 printGotEntry(GotAddr, BeginIt, It); 2116 2117 W.printHex("Value", Sym->st_value); 2118 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2119 2120 unsigned SectionIndex = 0; 2121 StringRef SectionName; 2122 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2123 Dumper->getShndxTable(), SectionName, SectionIndex); 2124 W.printHex("Section", SectionName, SectionIndex); 2125 2126 std::string FullSymbolName = 2127 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 2128 W.printNumber("Name", FullSymbolName, Sym->st_name); 2129 } 2130 2131 template <class ELFT> 2132 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2133 const GOTEntry *BeginIt, 2134 const GOTEntry *It, StringRef Purpose) { 2135 DictScope D(W, "Entry"); 2136 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2137 W.printHex("Address", PLTAddr + Offset); 2138 W.printHex("Initial", *It); 2139 W.printString("Purpose", Purpose); 2140 } 2141 2142 template <class ELFT> 2143 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 2144 const GOTEntry *BeginIt, 2145 const GOTEntry *It, StringRef StrTable, 2146 const Elf_Sym *Sym) { 2147 DictScope D(W, "Entry"); 2148 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 2149 W.printHex("Address", PLTAddr + Offset); 2150 W.printHex("Initial", *It); 2151 W.printHex("Value", Sym->st_value); 2152 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 2153 2154 unsigned SectionIndex = 0; 2155 StringRef SectionName; 2156 getSectionNameIndex(*Obj, Sym, Dumper->dynamic_symbols().begin(), 2157 Dumper->getShndxTable(), SectionName, SectionIndex); 2158 W.printHex("Section", SectionName, SectionIndex); 2159 2160 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 2161 W.printNumber("Name", FullSymbolName, Sym->st_name); 2162 } 2163 2164 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2165 if (Obj->getHeader()->e_machine != EM_MIPS) { 2166 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2167 return; 2168 } 2169 2170 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2171 GOTParser.parseGOT(); 2172 GOTParser.parsePLT(); 2173 } 2174 2175 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2176 {"None", Mips::AFL_EXT_NONE}, 2177 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2178 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2179 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2180 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2181 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2182 {"LSI R4010", Mips::AFL_EXT_4010}, 2183 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2184 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2185 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2186 {"MIPS R4650", Mips::AFL_EXT_4650}, 2187 {"MIPS R5900", Mips::AFL_EXT_5900}, 2188 {"MIPS R10000", Mips::AFL_EXT_10000}, 2189 {"NEC VR4100", Mips::AFL_EXT_4100}, 2190 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2191 {"NEC VR4120", Mips::AFL_EXT_4120}, 2192 {"NEC VR5400", Mips::AFL_EXT_5400}, 2193 {"NEC VR5500", Mips::AFL_EXT_5500}, 2194 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2195 {"Toshiba R3900", Mips::AFL_EXT_3900} 2196 }; 2197 2198 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2199 {"DSP", Mips::AFL_ASE_DSP}, 2200 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2201 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2202 {"MCU", Mips::AFL_ASE_MCU}, 2203 {"MDMX", Mips::AFL_ASE_MDMX}, 2204 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2205 {"MT", Mips::AFL_ASE_MT}, 2206 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2207 {"VZ", Mips::AFL_ASE_VIRT}, 2208 {"MSA", Mips::AFL_ASE_MSA}, 2209 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2210 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2211 {"XPA", Mips::AFL_ASE_XPA} 2212 }; 2213 2214 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2215 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2216 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2217 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2218 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2219 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2220 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2221 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2222 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2223 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2224 Mips::Val_GNU_MIPS_ABI_FP_64A} 2225 }; 2226 2227 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2228 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2229 }; 2230 2231 static int getMipsRegisterSize(uint8_t Flag) { 2232 switch (Flag) { 2233 case Mips::AFL_REG_NONE: 2234 return 0; 2235 case Mips::AFL_REG_32: 2236 return 32; 2237 case Mips::AFL_REG_64: 2238 return 64; 2239 case Mips::AFL_REG_128: 2240 return 128; 2241 default: 2242 return -1; 2243 } 2244 } 2245 2246 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2247 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2248 if (!Shdr) { 2249 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2250 return; 2251 } 2252 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2253 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2254 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2255 return; 2256 } 2257 2258 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2259 2260 raw_ostream &OS = W.getOStream(); 2261 DictScope GS(W, "MIPS ABI Flags"); 2262 2263 W.printNumber("Version", Flags->version); 2264 W.startLine() << "ISA: "; 2265 if (Flags->isa_rev <= 1) 2266 OS << format("MIPS%u", Flags->isa_level); 2267 else 2268 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2269 OS << "\n"; 2270 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2271 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2272 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2273 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2274 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2275 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2276 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2277 W.printHex("Flags 2", Flags->flags2); 2278 } 2279 2280 template <class ELFT> 2281 static void printMipsReginfoData(ScopedPrinter &W, 2282 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2283 W.printHex("GP", Reginfo.ri_gp_value); 2284 W.printHex("General Mask", Reginfo.ri_gprmask); 2285 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2286 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2287 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2288 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2289 } 2290 2291 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2292 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2293 if (!Shdr) { 2294 W.startLine() << "There is no .reginfo section in the file.\n"; 2295 return; 2296 } 2297 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2298 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2299 W.startLine() << "The .reginfo section has a wrong size.\n"; 2300 return; 2301 } 2302 2303 DictScope GS(W, "MIPS RegInfo"); 2304 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2305 printMipsReginfoData(W, *Reginfo); 2306 } 2307 2308 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2309 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2310 if (!Shdr) { 2311 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2312 return; 2313 } 2314 2315 DictScope GS(W, "MIPS Options"); 2316 2317 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2318 while (!Sec.empty()) { 2319 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2320 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2321 return; 2322 } 2323 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2324 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2325 switch (O->kind) { 2326 case ODK_REGINFO: 2327 printMipsReginfoData(W, O->getRegInfo()); 2328 break; 2329 default: 2330 W.startLine() << "Unsupported MIPS options tag.\n"; 2331 break; 2332 } 2333 Sec = Sec.slice(O->size); 2334 } 2335 } 2336 2337 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2338 const Elf_Shdr *StackMapSection = nullptr; 2339 for (const auto &Sec : Obj->sections()) { 2340 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2341 if (Name == ".llvm_stackmaps") { 2342 StackMapSection = &Sec; 2343 break; 2344 } 2345 } 2346 2347 if (!StackMapSection) 2348 return; 2349 2350 StringRef StackMapContents; 2351 ArrayRef<uint8_t> StackMapContentsArray = 2352 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2353 2354 prettyPrintStackMap(llvm::outs(), StackMapV1Parser<ELFT::TargetEndianness>( 2355 StackMapContentsArray)); 2356 } 2357 2358 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2359 ELFDumperStyle->printGroupSections(Obj); 2360 } 2361 2362 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2363 StringRef Str2) { 2364 OS.PadToColumn(2u); 2365 OS << Str1; 2366 OS.PadToColumn(37u); 2367 OS << Str2 << "\n"; 2368 OS.flush(); 2369 } 2370 2371 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2372 const Elf_Ehdr *e = Obj->getHeader(); 2373 OS << "ELF Header:\n"; 2374 OS << " Magic: "; 2375 std::string Str; 2376 for (int i = 0; i < ELF::EI_NIDENT; i++) 2377 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2378 OS << "\n"; 2379 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2380 printFields(OS, "Class:", Str); 2381 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2382 printFields(OS, "Data:", Str); 2383 OS.PadToColumn(2u); 2384 OS << "Version:"; 2385 OS.PadToColumn(37u); 2386 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2387 if (e->e_version == ELF::EV_CURRENT) 2388 OS << " (current)"; 2389 OS << "\n"; 2390 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2391 printFields(OS, "OS/ABI:", Str); 2392 Str = "0x" + to_hexString(e->e_version); 2393 Str = to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2394 printFields(OS, "ABI Version:", Str); 2395 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2396 printFields(OS, "Type:", Str); 2397 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2398 printFields(OS, "Machine:", Str); 2399 Str = "0x" + to_hexString(e->e_version); 2400 printFields(OS, "Version:", Str); 2401 Str = "0x" + to_hexString(e->e_entry); 2402 printFields(OS, "Entry point address:", Str); 2403 Str = to_string(e->e_phoff) + " (bytes into file)"; 2404 printFields(OS, "Start of program headers:", Str); 2405 Str = to_string(e->e_shoff) + " (bytes into file)"; 2406 printFields(OS, "Start of section headers:", Str); 2407 Str = "0x" + to_hexString(e->e_flags); 2408 printFields(OS, "Flags:", Str); 2409 Str = to_string(e->e_ehsize) + " (bytes)"; 2410 printFields(OS, "Size of this header:", Str); 2411 Str = to_string(e->e_phentsize) + " (bytes)"; 2412 printFields(OS, "Size of program headers:", Str); 2413 Str = to_string(e->e_phnum); 2414 printFields(OS, "Number of program headers:", Str); 2415 Str = to_string(e->e_shentsize) + " (bytes)"; 2416 printFields(OS, "Size of section headers:", Str); 2417 Str = to_string(e->e_shnum); 2418 printFields(OS, "Number of section headers:", Str); 2419 Str = to_string(e->e_shstrndx); 2420 printFields(OS, "Section header string table index:", Str); 2421 } 2422 2423 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2424 uint32_t SectionIndex = 0; 2425 bool HasGroups = false; 2426 for (const Elf_Shdr &Sec : Obj->sections()) { 2427 if (Sec.sh_type == ELF::SHT_GROUP) { 2428 HasGroups = true; 2429 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2430 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2431 const Elf_Sym *Signature = 2432 Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 2433 ArrayRef<Elf_Word> Data = unwrapOrError( 2434 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2435 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2436 OS << "\n" << getGroupType(Data[0]) << " group section [" 2437 << format_decimal(SectionIndex, 5) << "] `" << Name << "' [" 2438 << StrTable.data() + Signature->st_name << "] contains " 2439 << (Data.size() - 1) << " sections:\n" 2440 << " [Index] Name\n"; 2441 for (auto &Ndx : Data.slice(1)) { 2442 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2443 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2444 OS << " [" << format_decimal(Ndx, 5) << "] " << Name 2445 << "\n"; 2446 } 2447 } 2448 ++SectionIndex; 2449 } 2450 if (!HasGroups) 2451 OS << "There are no section groups in this file.\n"; 2452 } 2453 2454 template <class ELFT> 2455 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2456 const Elf_Rela &R, bool IsRela) { 2457 std::string Offset, Info, Addend = "", Value; 2458 SmallString<32> RelocName; 2459 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2460 StringRef TargetName; 2461 const Elf_Sym *Sym = nullptr; 2462 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2463 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2464 2465 // First two fields are bit width dependent. The rest of them are after are 2466 // fixed width. 2467 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2468 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2469 Sym = Obj->getRelocationSymbol(&R, SymTab); 2470 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2471 const Elf_Shdr *Sec = unwrapOrError( 2472 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2473 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2474 } else if (Sym) { 2475 TargetName = unwrapOrError(Sym->getName(StrTable)); 2476 } 2477 2478 if (Sym && IsRela) { 2479 if (R.r_addend < 0) 2480 Addend = " - "; 2481 else 2482 Addend = " + "; 2483 } 2484 2485 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2486 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2487 2488 int64_t RelAddend = R.r_addend; 2489 if (IsRela) 2490 Addend += to_hexString(std::abs(RelAddend), false); 2491 2492 if (Sym) 2493 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2494 2495 Fields[0].Str = Offset; 2496 Fields[1].Str = Info; 2497 Fields[2].Str = RelocName; 2498 Fields[3].Str = Value; 2499 Fields[4].Str = TargetName; 2500 for (auto &field : Fields) 2501 printField(field); 2502 OS << Addend; 2503 OS << "\n"; 2504 } 2505 2506 static inline void printRelocHeader(raw_ostream &OS, bool Is64, bool IsRela) { 2507 if (Is64) 2508 OS << " Offset Info Type" 2509 << " Symbol's Value Symbol's Name"; 2510 else 2511 OS << " Offset Info Type Sym. Value " 2512 << "Symbol's Name"; 2513 if (IsRela) 2514 OS << (IsRela ? " + Addend" : ""); 2515 OS << "\n"; 2516 } 2517 2518 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2519 bool HasRelocSections = false; 2520 for (const Elf_Shdr &Sec : Obj->sections()) { 2521 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 2522 continue; 2523 HasRelocSections = true; 2524 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2525 unsigned Entries = Sec.getEntityCount(); 2526 uintX_t Offset = Sec.sh_offset; 2527 OS << "\nRelocation section '" << Name << "' at offset 0x" 2528 << to_hexString(Offset, false) << " contains " << Entries 2529 << " entries:\n"; 2530 printRelocHeader(OS, ELFT::Is64Bits, (Sec.sh_type == ELF::SHT_RELA)); 2531 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2532 if (Sec.sh_type == ELF::SHT_REL) { 2533 for (const auto &R : Obj->rels(&Sec)) { 2534 Elf_Rela Rela; 2535 Rela.r_offset = R.r_offset; 2536 Rela.r_info = R.r_info; 2537 Rela.r_addend = 0; 2538 printRelocation(Obj, SymTab, Rela, false); 2539 } 2540 } else { 2541 for (const auto &R : Obj->relas(&Sec)) 2542 printRelocation(Obj, SymTab, R, true); 2543 } 2544 } 2545 if (!HasRelocSections) 2546 OS << "\nThere are no relocations in this file.\n"; 2547 } 2548 2549 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2550 using namespace ELF; 2551 switch (Arch) { 2552 case EM_ARM: 2553 switch (Type) { 2554 case SHT_ARM_EXIDX: 2555 return "ARM_EXIDX"; 2556 case SHT_ARM_PREEMPTMAP: 2557 return "ARM_PREEMPTMAP"; 2558 case SHT_ARM_ATTRIBUTES: 2559 return "ARM_ATTRIBUTES"; 2560 case SHT_ARM_DEBUGOVERLAY: 2561 return "ARM_DEBUGOVERLAY"; 2562 case SHT_ARM_OVERLAYSECTION: 2563 return "ARM_OVERLAYSECTION"; 2564 } 2565 case EM_X86_64: 2566 switch (Type) { 2567 case SHT_X86_64_UNWIND: 2568 return "X86_64_UNWIND"; 2569 } 2570 case EM_MIPS: 2571 case EM_MIPS_RS3_LE: 2572 switch (Type) { 2573 case SHT_MIPS_REGINFO: 2574 return "MIPS_REGINFO"; 2575 case SHT_MIPS_OPTIONS: 2576 return "MIPS_OPTIONS"; 2577 case SHT_MIPS_ABIFLAGS: 2578 return "MIPS_ABIFLAGS"; 2579 } 2580 } 2581 switch (Type) { 2582 case SHT_NULL: 2583 return "NULL"; 2584 case SHT_PROGBITS: 2585 return "PROGBITS"; 2586 case SHT_SYMTAB: 2587 return "SYMTAB"; 2588 case SHT_STRTAB: 2589 return "STRTAB"; 2590 case SHT_RELA: 2591 return "RELA"; 2592 case SHT_HASH: 2593 return "HASH"; 2594 case SHT_DYNAMIC: 2595 return "DYNAMIC"; 2596 case SHT_NOTE: 2597 return "NOTE"; 2598 case SHT_NOBITS: 2599 return "NOBITS"; 2600 case SHT_REL: 2601 return "REL"; 2602 case SHT_SHLIB: 2603 return "SHLIB"; 2604 case SHT_DYNSYM: 2605 return "DYNSYM"; 2606 case SHT_INIT_ARRAY: 2607 return "INIT_ARRAY"; 2608 case SHT_FINI_ARRAY: 2609 return "FINI_ARRAY"; 2610 case SHT_PREINIT_ARRAY: 2611 return "PREINIT_ARRAY"; 2612 case SHT_GROUP: 2613 return "GROUP"; 2614 case SHT_SYMTAB_SHNDX: 2615 return "SYMTAB SECTION INDICES"; 2616 // FIXME: Parse processor specific GNU attributes 2617 case SHT_GNU_ATTRIBUTES: 2618 return "ATTRIBUTES"; 2619 case SHT_GNU_HASH: 2620 return "GNU_HASH"; 2621 case SHT_GNU_verdef: 2622 return "VERDEF"; 2623 case SHT_GNU_verneed: 2624 return "VERNEED"; 2625 case SHT_GNU_versym: 2626 return "VERSYM"; 2627 default: 2628 return ""; 2629 } 2630 return ""; 2631 } 2632 2633 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2634 size_t SectionIndex = 0; 2635 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2636 Alignment; 2637 unsigned Bias; 2638 unsigned Width; 2639 2640 if (ELFT::Is64Bits) { 2641 Bias = 0; 2642 Width = 16; 2643 } else { 2644 Bias = 8; 2645 Width = 8; 2646 } 2647 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2648 << " section headers, starting at offset " 2649 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2650 OS << "Section Headers:\n"; 2651 Field Fields[11] = {{"[Nr]", 2}, 2652 {"Name", 7}, 2653 {"Type", 25}, 2654 {"Address", 41}, 2655 {"Off", 58 - Bias}, 2656 {"Size", 65 - Bias}, 2657 {"ES", 72 - Bias}, 2658 {"Flg", 75 - Bias}, 2659 {"Lk", 79 - Bias}, 2660 {"Inf", 82 - Bias}, 2661 {"Al", 86 - Bias}}; 2662 for (auto &f : Fields) 2663 printField(f); 2664 OS << "\n"; 2665 2666 for (const Elf_Shdr &Sec : Obj->sections()) { 2667 Number = to_string(SectionIndex); 2668 Fields[0].Str = Number; 2669 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2670 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2671 Fields[2].Str = Type; 2672 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2673 Fields[3].Str = Address; 2674 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2675 Fields[4].Str = Offset; 2676 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2677 Fields[5].Str = Size; 2678 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2679 Fields[6].Str = EntrySize; 2680 Flags = getGNUFlags(Sec.sh_flags); 2681 Fields[7].Str = Flags; 2682 Link = to_string(Sec.sh_link); 2683 Fields[8].Str = Link; 2684 Info = to_string(Sec.sh_info); 2685 Fields[9].Str = Info; 2686 Alignment = to_string(Sec.sh_addralign); 2687 Fields[10].Str = Alignment; 2688 OS.PadToColumn(Fields[0].Column); 2689 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2690 for (int i = 1; i < 7; i++) 2691 printField(Fields[i]); 2692 OS.PadToColumn(Fields[7].Column); 2693 OS << right_justify(Fields[7].Str, 3); 2694 OS.PadToColumn(Fields[8].Column); 2695 OS << right_justify(Fields[8].Str, 2); 2696 OS.PadToColumn(Fields[9].Column); 2697 OS << right_justify(Fields[9].Str, 3); 2698 OS.PadToColumn(Fields[10].Column); 2699 OS << right_justify(Fields[10].Str, 2); 2700 OS << "\n"; 2701 ++SectionIndex; 2702 } 2703 OS << "Key to Flags:\n" 2704 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2705 "(large)\n" 2706 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2707 x (unknown)\n" 2708 << " O (extra OS processing required) o (OS specific),\ 2709 p (processor specific)\n"; 2710 } 2711 2712 template <class ELFT> 2713 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2714 size_t Entries) { 2715 if (Name.size()) 2716 OS << "\nSymbol table '" << Name << "' contains " << Entries 2717 << " entries:\n"; 2718 else 2719 OS << "\n Symbol table for image:\n"; 2720 2721 if (ELFT::Is64Bits) 2722 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2723 else 2724 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2725 } 2726 2727 template <class ELFT> 2728 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2729 const Elf_Sym *Symbol, 2730 const Elf_Sym *FirstSym) { 2731 unsigned SectionIndex = Symbol->st_shndx; 2732 switch (SectionIndex) { 2733 case ELF::SHN_UNDEF: 2734 return "UND"; 2735 case ELF::SHN_ABS: 2736 return "ABS"; 2737 case ELF::SHN_COMMON: 2738 return "COM"; 2739 case ELF::SHN_XINDEX: 2740 SectionIndex = Obj->getExtendedSymbolTableIndex( 2741 Symbol, FirstSym, this->dumper()->getShndxTable()); 2742 default: 2743 // Find if: 2744 // Processor specific 2745 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2746 return std::string("PRC[0x") + 2747 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2748 // OS specific 2749 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2750 return std::string("OS[0x") + 2751 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2752 // Architecture reserved: 2753 if (SectionIndex >= ELF::SHN_LORESERVE && 2754 SectionIndex <= ELF::SHN_HIRESERVE) 2755 return std::string("RSV[0x") + 2756 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2757 // A normal section with an index 2758 return to_string(format_decimal(SectionIndex, 3)); 2759 } 2760 } 2761 2762 template <class ELFT> 2763 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2764 const Elf_Sym *FirstSym, StringRef StrTable, 2765 bool IsDynamic) { 2766 static int Idx = 0; 2767 static bool Dynamic = true; 2768 size_t Width; 2769 2770 // If this function was called with a different value from IsDynamic 2771 // from last call, happens when we move from dynamic to static symbol 2772 // table, "Num" field should be reset. 2773 if (!Dynamic != !IsDynamic) { 2774 Idx = 0; 2775 Dynamic = false; 2776 } 2777 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 2778 unsigned Bias = 0; 2779 if (ELFT::Is64Bits) { 2780 Bias = 8; 2781 Width = 16; 2782 } else { 2783 Bias = 0; 2784 Width = 8; 2785 } 2786 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 2787 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 2788 Num = to_string(format_decimal(Idx++, 6)) + ":"; 2789 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 2790 Size = to_string(format_decimal(Symbol->st_size, 5)); 2791 unsigned char SymbolType = Symbol->getType(); 2792 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 2793 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 2794 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 2795 else 2796 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 2797 unsigned Vis = Symbol->getVisibility(); 2798 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 2799 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 2800 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 2801 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 2802 Fields[0].Str = Num; 2803 Fields[1].Str = Value; 2804 Fields[2].Str = Size; 2805 Fields[3].Str = Type; 2806 Fields[4].Str = Binding; 2807 Fields[5].Str = Visibility; 2808 Fields[6].Str = Section; 2809 Fields[7].Str = Name; 2810 for (auto &Entry : Fields) 2811 printField(Entry); 2812 OS << "\n"; 2813 } 2814 2815 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 2816 this->dumper()->printSymbolsHelper(true); 2817 this->dumper()->printSymbolsHelper(false); 2818 } 2819 2820 template <class ELFT> 2821 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 2822 this->dumper()->printSymbolsHelper(true); 2823 } 2824 2825 static inline std::string printPhdrFlags(unsigned Flag) { 2826 std::string Str; 2827 Str = (Flag & PF_R) ? "R" : " "; 2828 Str += (Flag & PF_W) ? "W" : " "; 2829 Str += (Flag & PF_X) ? "E" : " "; 2830 return Str; 2831 } 2832 2833 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 2834 // PT_TLS must only have SHF_TLS sections 2835 template <class ELFT> 2836 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 2837 const Elf_Shdr &Sec) { 2838 return (((Sec.sh_flags & ELF::SHF_TLS) && 2839 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 2840 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 2841 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 2842 } 2843 2844 // Non-SHT_NOBITS must have its offset inside the segment 2845 // Only non-zero section can be at end of segment 2846 template <class ELFT> 2847 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2848 if (Sec.sh_type == ELF::SHT_NOBITS) 2849 return true; 2850 bool IsSpecial = 2851 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2852 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2853 auto SectionSize = 2854 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2855 if (Sec.sh_offset >= Phdr.p_offset) 2856 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 2857 /*only non-zero sized sections at end*/ && 2858 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 2859 return false; 2860 } 2861 2862 // SHF_ALLOC must have VMA inside segment 2863 // Only non-zero section can be at end of segment 2864 template <class ELFT> 2865 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2866 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 2867 return true; 2868 bool IsSpecial = 2869 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 2870 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 2871 auto SectionSize = 2872 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 2873 if (Sec.sh_addr >= Phdr.p_vaddr) 2874 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 2875 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 2876 return false; 2877 } 2878 2879 // No section with zero size must be at start or end of PT_DYNAMIC 2880 template <class ELFT> 2881 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 2882 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 2883 return true; 2884 // Is section within the phdr both based on offset and VMA ? 2885 return ((Sec.sh_type == ELF::SHT_NOBITS) || 2886 (Sec.sh_offset > Phdr.p_offset && 2887 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 2888 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 2889 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 2890 } 2891 2892 template <class ELFT> 2893 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 2894 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2895 unsigned Width = ELFT::Is64Bits ? 18 : 10; 2896 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 2897 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 2898 2899 const Elf_Ehdr *Header = Obj->getHeader(); 2900 Field Fields[8] = {2, 17, 26, 37 + Bias, 2901 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 2902 OS << "\nElf file type is " 2903 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 2904 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 2905 << "There are " << Header->e_phnum << " program headers," 2906 << " starting at offset " << Header->e_phoff << "\n\n" 2907 << "Program Headers:\n"; 2908 if (ELFT::Is64Bits) 2909 OS << " Type Offset VirtAddr PhysAddr " 2910 << " FileSiz MemSiz Flg Align\n"; 2911 else 2912 OS << " Type Offset VirtAddr PhysAddr FileSiz " 2913 << "MemSiz Flg Align\n"; 2914 for (const auto &Phdr : Obj->program_headers()) { 2915 Type = getElfPtType(Header->e_machine, Phdr.p_type); 2916 Offset = to_string(format_hex(Phdr.p_offset, 8)); 2917 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 2918 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 2919 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 2920 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 2921 Flag = printPhdrFlags(Phdr.p_flags); 2922 Align = to_string(format_hex(Phdr.p_align, 1)); 2923 Fields[0].Str = Type; 2924 Fields[1].Str = Offset; 2925 Fields[2].Str = VMA; 2926 Fields[3].Str = LMA; 2927 Fields[4].Str = FileSz; 2928 Fields[5].Str = MemSz; 2929 Fields[6].Str = Flag; 2930 Fields[7].Str = Align; 2931 for (auto Field : Fields) 2932 printField(Field); 2933 if (Phdr.p_type == ELF::PT_INTERP) { 2934 OS << "\n [Requesting program interpreter: "; 2935 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 2936 } 2937 OS << "\n"; 2938 } 2939 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 2940 int Phnum = 0; 2941 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 2942 std::string Sections; 2943 OS << format(" %2.2d ", Phnum++); 2944 for (const Elf_Shdr &Sec : Obj->sections()) { 2945 // Check if each section is in a segment and then print mapping. 2946 // readelf additionally makes sure it does not print zero sized sections 2947 // at end of segments and for PT_DYNAMIC both start and end of section 2948 // .tbss must only be shown in PT_TLS section. 2949 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 2950 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 2951 Phdr.p_type != ELF::PT_TLS; 2952 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 2953 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 2954 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 2955 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 2956 } 2957 OS << Sections << "\n"; 2958 OS.flush(); 2959 } 2960 } 2961 2962 template <class ELFT> 2963 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 2964 bool IsRela) { 2965 SmallString<32> RelocName; 2966 StringRef SymbolName; 2967 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2968 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2969 // First two fields are bit width dependent. The rest of them are after are 2970 // fixed width. 2971 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2972 2973 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 2974 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 2975 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2976 SymbolName = 2977 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 2978 std::string Addend = "", Info, Offset, Value; 2979 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2980 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2981 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2982 int64_t RelAddend = R.r_addend; 2983 if (SymbolName.size() && IsRela) { 2984 if (R.r_addend < 0) 2985 Addend = " - "; 2986 else 2987 Addend = " + "; 2988 } 2989 2990 if (!SymbolName.size() && Sym->getValue() == 0) 2991 Value = ""; 2992 2993 if (IsRela) 2994 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 2995 2996 2997 Fields[0].Str = Offset; 2998 Fields[1].Str = Info; 2999 Fields[2].Str = RelocName.c_str(); 3000 Fields[3].Str = Value; 3001 Fields[4].Str = SymbolName; 3002 for (auto &Field : Fields) 3003 printField(Field); 3004 OS << Addend; 3005 OS << "\n"; 3006 } 3007 3008 template <class ELFT> 3009 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3010 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3011 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3012 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3013 if (DynRelaRegion.Size > 0) { 3014 OS << "\n'RELA' relocation section at offset " 3015 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3016 Obj->base(), 3017 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3018 printRelocHeader(OS, ELFT::Is64Bits, true); 3019 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3020 printDynamicRelocation(Obj, Rela, true); 3021 } 3022 if (DynRelRegion.Size > 0) { 3023 OS << "\n'REL' relocation section at offset " 3024 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3025 Obj->base(), 3026 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3027 printRelocHeader(OS, ELFT::Is64Bits, false); 3028 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3029 Elf_Rela Rela; 3030 Rela.r_offset = Rel.r_offset; 3031 Rela.r_info = Rel.r_info; 3032 Rela.r_addend = 0; 3033 printDynamicRelocation(Obj, Rela, false); 3034 } 3035 } 3036 if (DynPLTRelRegion.Size) { 3037 OS << "\n'PLT' relocation section at offset " 3038 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3039 Obj->base(), 3040 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3041 } 3042 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3043 printRelocHeader(OS, ELFT::Is64Bits, true); 3044 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3045 printDynamicRelocation(Obj, Rela, true); 3046 } else { 3047 printRelocHeader(OS, ELFT::Is64Bits, false); 3048 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3049 Elf_Rela Rela; 3050 Rela.r_offset = Rel.r_offset; 3051 Rela.r_info = Rel.r_info; 3052 Rela.r_addend = 0; 3053 printDynamicRelocation(Obj, Rela, false); 3054 } 3055 } 3056 } 3057 3058 // Hash histogram shows statistics of how efficient the hash was for the 3059 // dynamic symbol table. The table shows number of hash buckets for different 3060 // lengths of chains as absolute number and percentage of the total buckets. 3061 // Additionally cumulative coverage of symbols for each set of buckets. 3062 template <class ELFT> 3063 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3064 3065 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3066 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3067 3068 // Print histogram for .hash section 3069 if (HashTable) { 3070 size_t NBucket = HashTable->nbucket; 3071 size_t NChain = HashTable->nchain; 3072 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3073 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3074 size_t TotalSyms = 0; 3075 // If hash table is correct, we have at least chains with 0 length 3076 size_t MaxChain = 1; 3077 size_t CumulativeNonZero = 0; 3078 3079 if (NChain == 0 || NBucket == 0) 3080 return; 3081 3082 std::vector<size_t> ChainLen(NBucket, 0); 3083 // Go over all buckets and and note chain lengths of each bucket (total 3084 // unique chain lengths). 3085 for (size_t B = 0; B < NBucket; B++) { 3086 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3087 if (MaxChain <= ++ChainLen[B]) 3088 MaxChain++; 3089 TotalSyms += ChainLen[B]; 3090 } 3091 3092 if (!TotalSyms) 3093 return; 3094 3095 std::vector<size_t> Count(MaxChain, 0) ; 3096 // Count how long is the chain for each bucket 3097 for (size_t B = 0; B < NBucket; B++) 3098 ++Count[ChainLen[B]]; 3099 // Print Number of buckets with each chain lengths and their cumulative 3100 // coverage of the symbols 3101 OS << "Histogram for bucket list length (total of " << NBucket 3102 << " buckets)\n" 3103 << " Length Number % of total Coverage\n"; 3104 for (size_t I = 0; I < MaxChain; I++) { 3105 CumulativeNonZero += Count[I] * I; 3106 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3107 (Count[I] * 100.0) / NBucket, 3108 (CumulativeNonZero * 100.0) / TotalSyms); 3109 } 3110 } 3111 3112 // Print histogram for .gnu.hash section 3113 if (GnuHashTable) { 3114 size_t NBucket = GnuHashTable->nbuckets; 3115 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3116 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3117 if (!NumSyms) 3118 return; 3119 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3120 size_t Symndx = GnuHashTable->symndx; 3121 size_t TotalSyms = 0; 3122 size_t MaxChain = 1; 3123 size_t CumulativeNonZero = 0; 3124 3125 if (Chains.size() == 0 || NBucket == 0) 3126 return; 3127 3128 std::vector<size_t> ChainLen(NBucket, 0); 3129 3130 for (size_t B = 0; B < NBucket; B++) { 3131 if (!Buckets[B]) 3132 continue; 3133 size_t Len = 1; 3134 for (size_t C = Buckets[B] - Symndx; 3135 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3136 if (MaxChain < ++Len) 3137 MaxChain++; 3138 ChainLen[B] = Len; 3139 TotalSyms += Len; 3140 } 3141 MaxChain++; 3142 3143 if (!TotalSyms) 3144 return; 3145 3146 std::vector<size_t> Count(MaxChain, 0) ; 3147 for (size_t B = 0; B < NBucket; B++) 3148 ++Count[ChainLen[B]]; 3149 // Print Number of buckets with each chain lengths and their cumulative 3150 // coverage of the symbols 3151 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3152 << " buckets)\n" 3153 << " Length Number % of total Coverage\n"; 3154 for (size_t I = 0; I <MaxChain; I++) { 3155 CumulativeNonZero += Count[I] * I; 3156 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3157 (Count[I] * 100.0) / NBucket, 3158 (CumulativeNonZero * 100.0) / TotalSyms); 3159 } 3160 } 3161 } 3162 3163 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3164 const Elf_Ehdr *e = Obj->getHeader(); 3165 { 3166 DictScope D(W, "ElfHeader"); 3167 { 3168 DictScope D(W, "Ident"); 3169 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3170 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3171 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3172 makeArrayRef(ElfDataEncoding)); 3173 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3174 3175 // Handle architecture specific OS/ABI values. 3176 if (e->e_machine == ELF::EM_AMDGPU && 3177 e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA) 3178 W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA); 3179 else 3180 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], 3181 makeArrayRef(ElfOSABI)); 3182 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3183 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3184 } 3185 3186 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3187 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3188 W.printNumber("Version", e->e_version); 3189 W.printHex("Entry", e->e_entry); 3190 W.printHex("ProgramHeaderOffset", e->e_phoff); 3191 W.printHex("SectionHeaderOffset", e->e_shoff); 3192 if (e->e_machine == EM_MIPS) 3193 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3194 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3195 unsigned(ELF::EF_MIPS_MACH)); 3196 else 3197 W.printFlags("Flags", e->e_flags); 3198 W.printNumber("HeaderSize", e->e_ehsize); 3199 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3200 W.printNumber("ProgramHeaderCount", e->e_phnum); 3201 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3202 W.printNumber("SectionHeaderCount", e->e_shnum); 3203 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 3204 } 3205 } 3206 3207 template <class ELFT> 3208 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 3209 DictScope Lists(W, "Groups"); 3210 uint32_t SectionIndex = 0; 3211 bool HasGroups = false; 3212 for (const Elf_Shdr &Sec : Obj->sections()) { 3213 if (Sec.sh_type == ELF::SHT_GROUP) { 3214 HasGroups = true; 3215 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 3216 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3217 const Elf_Sym *Sym = Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info); 3218 auto Data = unwrapOrError( 3219 Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 3220 DictScope D(W, "Group"); 3221 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3222 W.printNumber("Name", Name, Sec.sh_name); 3223 W.printNumber("Index", SectionIndex); 3224 W.printHex("Type", getGroupType(Data[0]), Data[0]); 3225 W.startLine() << "Signature: " << StrTable.data() + Sym->st_name << "\n"; 3226 { 3227 ListScope L(W, "Section(s) in group"); 3228 size_t Member = 1; 3229 while (Member < Data.size()) { 3230 auto Sec = unwrapOrError(Obj->getSection(Data[Member])); 3231 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 3232 W.startLine() << Name << " (" << Data[Member++] << ")\n"; 3233 } 3234 } 3235 } 3236 ++SectionIndex; 3237 } 3238 if (!HasGroups) 3239 W.startLine() << "There are no group sections in the file.\n"; 3240 } 3241 3242 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 3243 ListScope D(W, "Relocations"); 3244 3245 int SectionNumber = -1; 3246 for (const Elf_Shdr &Sec : Obj->sections()) { 3247 ++SectionNumber; 3248 3249 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 3250 continue; 3251 3252 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3253 3254 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 3255 W.indent(); 3256 3257 printRelocations(&Sec, Obj); 3258 3259 W.unindent(); 3260 W.startLine() << "}\n"; 3261 } 3262 } 3263 3264 template <class ELFT> 3265 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 3266 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 3267 3268 switch (Sec->sh_type) { 3269 case ELF::SHT_REL: 3270 for (const Elf_Rel &R : Obj->rels(Sec)) { 3271 Elf_Rela Rela; 3272 Rela.r_offset = R.r_offset; 3273 Rela.r_info = R.r_info; 3274 Rela.r_addend = 0; 3275 printRelocation(Obj, Rela, SymTab); 3276 } 3277 break; 3278 case ELF::SHT_RELA: 3279 for (const Elf_Rela &R : Obj->relas(Sec)) 3280 printRelocation(Obj, R, SymTab); 3281 break; 3282 } 3283 } 3284 3285 template <class ELFT> 3286 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 3287 const Elf_Shdr *SymTab) { 3288 SmallString<32> RelocName; 3289 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3290 StringRef TargetName; 3291 const Elf_Sym *Sym = Obj->getRelocationSymbol(&Rel, SymTab); 3292 if (Sym && Sym->getType() == ELF::STT_SECTION) { 3293 const Elf_Shdr *Sec = unwrapOrError( 3294 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 3295 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 3296 } else if (Sym) { 3297 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 3298 TargetName = unwrapOrError(Sym->getName(StrTable)); 3299 } 3300 3301 if (opts::ExpandRelocs) { 3302 DictScope Group(W, "Relocation"); 3303 W.printHex("Offset", Rel.r_offset); 3304 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3305 W.printNumber("Symbol", TargetName.size() > 0 ? TargetName : "-", 3306 Rel.getSymbol(Obj->isMips64EL())); 3307 W.printHex("Addend", Rel.r_addend); 3308 } else { 3309 raw_ostream &OS = W.startLine(); 3310 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3311 << (TargetName.size() > 0 ? TargetName : "-") << " " 3312 << W.hex(Rel.r_addend) << "\n"; 3313 } 3314 } 3315 3316 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 3317 ListScope SectionsD(W, "Sections"); 3318 3319 int SectionIndex = -1; 3320 for (const Elf_Shdr &Sec : Obj->sections()) { 3321 ++SectionIndex; 3322 3323 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 3324 3325 DictScope SectionD(W, "Section"); 3326 W.printNumber("Index", SectionIndex); 3327 W.printNumber("Name", Name, Sec.sh_name); 3328 W.printHex("Type", 3329 getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type), 3330 Sec.sh_type); 3331 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 3332 std::end(ElfSectionFlags)); 3333 switch (Obj->getHeader()->e_machine) { 3334 case EM_AMDGPU: 3335 SectionFlags.insert(SectionFlags.end(), std::begin(ElfAMDGPUSectionFlags), 3336 std::end(ElfAMDGPUSectionFlags)); 3337 break; 3338 case EM_HEXAGON: 3339 SectionFlags.insert(SectionFlags.end(), 3340 std::begin(ElfHexagonSectionFlags), 3341 std::end(ElfHexagonSectionFlags)); 3342 break; 3343 case EM_MIPS: 3344 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 3345 std::end(ElfMipsSectionFlags)); 3346 break; 3347 case EM_X86_64: 3348 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 3349 std::end(ElfX86_64SectionFlags)); 3350 break; 3351 case EM_XCORE: 3352 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 3353 std::end(ElfXCoreSectionFlags)); 3354 break; 3355 default: 3356 // Nothing to do. 3357 break; 3358 } 3359 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 3360 W.printHex("Address", Sec.sh_addr); 3361 W.printHex("Offset", Sec.sh_offset); 3362 W.printNumber("Size", Sec.sh_size); 3363 W.printNumber("Link", Sec.sh_link); 3364 W.printNumber("Info", Sec.sh_info); 3365 W.printNumber("AddressAlignment", Sec.sh_addralign); 3366 W.printNumber("EntrySize", Sec.sh_entsize); 3367 3368 if (opts::SectionRelocations) { 3369 ListScope D(W, "Relocations"); 3370 printRelocations(&Sec, Obj); 3371 } 3372 3373 if (opts::SectionSymbols) { 3374 ListScope D(W, "Symbols"); 3375 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 3376 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 3377 3378 for (const Elf_Sym &Sym : Obj->symbols(Symtab)) { 3379 const Elf_Shdr *SymSec = unwrapOrError( 3380 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 3381 if (SymSec == &Sec) 3382 printSymbol(Obj, &Sym, Obj->symbol_begin(Symtab), StrTable, false); 3383 } 3384 } 3385 3386 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 3387 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 3388 W.printBinaryBlock("SectionData", 3389 StringRef((const char *)Data.data(), Data.size())); 3390 } 3391 } 3392 } 3393 3394 template <class ELFT> 3395 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 3396 const Elf_Sym *First, StringRef StrTable, 3397 bool IsDynamic) { 3398 unsigned SectionIndex = 0; 3399 StringRef SectionName; 3400 getSectionNameIndex(*Obj, Symbol, First, this->dumper()->getShndxTable(), 3401 SectionName, SectionIndex); 3402 std::string FullSymbolName = 3403 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3404 unsigned char SymbolType = Symbol->getType(); 3405 3406 DictScope D(W, "Symbol"); 3407 W.printNumber("Name", FullSymbolName, Symbol->st_name); 3408 W.printHex("Value", Symbol->st_value); 3409 W.printNumber("Size", Symbol->st_size); 3410 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3411 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3412 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3413 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3414 else 3415 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 3416 if (Symbol->st_other == 0) 3417 // Usually st_other flag is zero. Do not pollute the output 3418 // by flags enumeration in that case. 3419 W.printNumber("Other", 0); 3420 else { 3421 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 3422 std::end(ElfSymOtherFlags)); 3423 if (Obj->getHeader()->e_machine == EM_MIPS) { 3424 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 3425 // flag overlapped with other ST_MIPS_xxx flags. So consider both 3426 // cases separately. 3427 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 3428 SymOtherFlags.insert(SymOtherFlags.end(), 3429 std::begin(ElfMips16SymOtherFlags), 3430 std::end(ElfMips16SymOtherFlags)); 3431 else 3432 SymOtherFlags.insert(SymOtherFlags.end(), 3433 std::begin(ElfMipsSymOtherFlags), 3434 std::end(ElfMipsSymOtherFlags)); 3435 } 3436 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 3437 } 3438 W.printHex("Section", SectionName, SectionIndex); 3439 } 3440 3441 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 3442 ListScope Group(W, "Symbols"); 3443 this->dumper()->printSymbolsHelper(false); 3444 } 3445 3446 template <class ELFT> 3447 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3448 ListScope Group(W, "DynamicSymbols"); 3449 this->dumper()->printSymbolsHelper(true); 3450 } 3451 3452 template <class ELFT> 3453 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3454 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3455 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3456 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3457 if (DynRelRegion.Size && DynRelaRegion.Size) 3458 report_fatal_error("There are both REL and RELA dynamic relocations"); 3459 W.startLine() << "Dynamic Relocations {\n"; 3460 W.indent(); 3461 if (DynRelaRegion.Size > 0) 3462 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3463 printDynamicRelocation(Obj, Rela); 3464 else 3465 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3466 Elf_Rela Rela; 3467 Rela.r_offset = Rel.r_offset; 3468 Rela.r_info = Rel.r_info; 3469 Rela.r_addend = 0; 3470 printDynamicRelocation(Obj, Rela); 3471 } 3472 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 3473 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3474 printDynamicRelocation(Obj, Rela); 3475 else 3476 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3477 Elf_Rela Rela; 3478 Rela.r_offset = Rel.r_offset; 3479 Rela.r_info = Rel.r_info; 3480 Rela.r_addend = 0; 3481 printDynamicRelocation(Obj, Rela); 3482 } 3483 W.unindent(); 3484 W.startLine() << "}\n"; 3485 } 3486 3487 template <class ELFT> 3488 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 3489 SmallString<32> RelocName; 3490 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 3491 StringRef SymbolName; 3492 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 3493 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3494 SymbolName = 3495 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3496 if (opts::ExpandRelocs) { 3497 DictScope Group(W, "Relocation"); 3498 W.printHex("Offset", Rel.r_offset); 3499 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 3500 W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-"); 3501 W.printHex("Addend", Rel.r_addend); 3502 } else { 3503 raw_ostream &OS = W.startLine(); 3504 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 3505 << (SymbolName.size() > 0 ? SymbolName : "-") << " " 3506 << W.hex(Rel.r_addend) << "\n"; 3507 } 3508 } 3509 3510 template <class ELFT> 3511 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3512 ListScope L(W, "ProgramHeaders"); 3513 3514 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 3515 DictScope P(W, "ProgramHeader"); 3516 W.printHex("Type", 3517 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 3518 Phdr.p_type); 3519 W.printHex("Offset", Phdr.p_offset); 3520 W.printHex("VirtualAddress", Phdr.p_vaddr); 3521 W.printHex("PhysicalAddress", Phdr.p_paddr); 3522 W.printNumber("FileSize", Phdr.p_filesz); 3523 W.printNumber("MemSize", Phdr.p_memsz); 3524 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 3525 W.printNumber("Alignment", Phdr.p_align); 3526 } 3527 } 3528 template <class ELFT> 3529 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3530 W.startLine() << "Hash Histogram not implemented!\n"; 3531 } 3532
