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