1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===// 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 /// This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "ARMEHABIPrinter.h" 16 #include "DwarfCFIEHPrinter.h" 17 #include "Error.h" 18 #include "ObjDumper.h" 19 #include "StackMapPrinter.h" 20 #include "llvm-readobj.h" 21 #include "llvm/ADT/ArrayRef.h" 22 #include "llvm/ADT/DenseMap.h" 23 #include "llvm/ADT/Optional.h" 24 #include "llvm/ADT/PointerIntPair.h" 25 #include "llvm/ADT/SmallString.h" 26 #include "llvm/ADT/SmallVector.h" 27 #include "llvm/ADT/STLExtras.h" 28 #include "llvm/ADT/StringExtras.h" 29 #include "llvm/ADT/StringRef.h" 30 #include "llvm/ADT/Twine.h" 31 #include "llvm/BinaryFormat/ELF.h" 32 #include "llvm/Object/ELF.h" 33 #include "llvm/Object/ELFObjectFile.h" 34 #include "llvm/Object/ELFTypes.h" 35 #include "llvm/Object/Error.h" 36 #include "llvm/Object/ObjectFile.h" 37 #include "llvm/Object/StackMapParser.h" 38 #include "llvm/Support/AMDGPUMetadata.h" 39 #include "llvm/Support/ARMAttributeParser.h" 40 #include "llvm/Support/ARMBuildAttributes.h" 41 #include "llvm/Support/Casting.h" 42 #include "llvm/Support/Compiler.h" 43 #include "llvm/Support/Endian.h" 44 #include "llvm/Support/ErrorHandling.h" 45 #include "llvm/Support/Format.h" 46 #include "llvm/Support/FormattedStream.h" 47 #include "llvm/Support/MathExtras.h" 48 #include "llvm/Support/MipsABIFlags.h" 49 #include "llvm/Support/ScopedPrinter.h" 50 #include "llvm/Support/raw_ostream.h" 51 #include <algorithm> 52 #include <cinttypes> 53 #include <cstddef> 54 #include <cstdint> 55 #include <cstdlib> 56 #include <iterator> 57 #include <memory> 58 #include <string> 59 #include <system_error> 60 #include <vector> 61 62 using namespace llvm; 63 using namespace llvm::object; 64 using namespace ELF; 65 66 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 67 case ns::enum: return #enum; 68 69 #define ENUM_ENT(enum, altName) \ 70 { #enum, altName, ELF::enum } 71 72 #define ENUM_ENT_1(enum) \ 73 { #enum, #enum, ELF::enum } 74 75 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \ 76 case ns::enum: \ 77 return std::string(#enum).substr(3); 78 79 #define TYPEDEF_ELF_TYPES(ELFT) \ 80 using ELFO = ELFFile<ELFT>; \ 81 using Elf_Addr = typename ELFT::Addr; \ 82 using Elf_Shdr = typename ELFT::Shdr; \ 83 using Elf_Sym = typename ELFT::Sym; \ 84 using Elf_Dyn = typename ELFT::Dyn; \ 85 using Elf_Dyn_Range = typename ELFT::DynRange; \ 86 using Elf_Rel = typename ELFT::Rel; \ 87 using Elf_Rela = typename ELFT::Rela; \ 88 using Elf_Relr = typename ELFT::Relr; \ 89 using Elf_Rel_Range = typename ELFT::RelRange; \ 90 using Elf_Rela_Range = typename ELFT::RelaRange; \ 91 using Elf_Relr_Range = typename ELFT::RelrRange; \ 92 using Elf_Phdr = typename ELFT::Phdr; \ 93 using Elf_Half = typename ELFT::Half; \ 94 using Elf_Ehdr = typename ELFT::Ehdr; \ 95 using Elf_Word = typename ELFT::Word; \ 96 using Elf_Hash = typename ELFT::Hash; \ 97 using Elf_GnuHash = typename ELFT::GnuHash; \ 98 using Elf_Note = typename ELFT::Note; \ 99 using Elf_Sym_Range = typename ELFT::SymRange; \ 100 using Elf_Versym = typename ELFT::Versym; \ 101 using Elf_Verneed = typename ELFT::Verneed; \ 102 using Elf_Vernaux = typename ELFT::Vernaux; \ 103 using Elf_Verdef = typename ELFT::Verdef; \ 104 using Elf_Verdaux = typename ELFT::Verdaux; \ 105 using Elf_CGProfile = typename ELFT::CGProfile; \ 106 using uintX_t = typename ELFT::uint; 107 108 namespace { 109 110 template <class ELFT> class DumpStyle; 111 112 /// Represents a contiguous uniform range in the file. We cannot just create a 113 /// range directly because when creating one of these from the .dynamic table 114 /// the size, entity size and virtual address are different entries in arbitrary 115 /// order (DT_REL, DT_RELSZ, DT_RELENT for example). 116 struct DynRegionInfo { 117 DynRegionInfo() = default; 118 DynRegionInfo(const void *A, uint64_t S, uint64_t ES) 119 : Addr(A), Size(S), EntSize(ES) {} 120 121 /// Address in current address space. 122 const void *Addr = nullptr; 123 /// Size in bytes of the region. 124 uint64_t Size = 0; 125 /// Size of each entity in the region. 126 uint64_t EntSize = 0; 127 128 template <typename Type> ArrayRef<Type> getAsArrayRef() const { 129 const Type *Start = reinterpret_cast<const Type *>(Addr); 130 if (!Start) 131 return {Start, Start}; 132 if (EntSize != sizeof(Type) || Size % EntSize) 133 reportError("Invalid entity size"); 134 return {Start, Start + (Size / EntSize)}; 135 } 136 }; 137 138 template<typename ELFT> 139 class ELFDumper : public ObjDumper { 140 public: 141 ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer); 142 143 void printFileHeaders() override; 144 void printSections() override; 145 void printRelocations() override; 146 void printDynamicRelocations() override; 147 void printSymbols() override; 148 void printDynamicSymbols() override; 149 void printUnwindInfo() override; 150 151 void printDynamicTable() override; 152 void printNeededLibraries() override; 153 void printProgramHeaders() override; 154 void printSectionAsString(StringRef StringName) override; 155 void printSectionAsHex(StringRef StringName) override; 156 void printHashTable() override; 157 void printGnuHashTable() override; 158 void printLoadName() override; 159 void printVersionInfo() override; 160 void printGroupSections() override; 161 162 void printAttributes() override; 163 void printMipsPLTGOT() override; 164 void printMipsABIFlags() override; 165 void printMipsReginfo() override; 166 void printMipsOptions() override; 167 168 void printStackMap() const override; 169 170 void printHashHistogram() override; 171 172 void printCGProfile() override; 173 174 void printNotes() override; 175 176 void printELFLinkerOptions() override; 177 178 private: 179 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle; 180 181 TYPEDEF_ELF_TYPES(ELFT) 182 183 DynRegionInfo checkDRI(DynRegionInfo DRI) { 184 if (DRI.Addr < Obj->base() || 185 (const uint8_t *)DRI.Addr + DRI.Size > Obj->base() + Obj->getBufSize()) 186 error(llvm::object::object_error::parse_failed); 187 return DRI; 188 } 189 190 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) { 191 return checkDRI({Obj->base() + P->p_offset, P->p_filesz, EntSize}); 192 } 193 194 DynRegionInfo createDRIFrom(const Elf_Shdr *S) { 195 return checkDRI({Obj->base() + S->sh_offset, S->sh_size, S->sh_entsize}); 196 } 197 198 void parseDynamicTable(ArrayRef<const Elf_Phdr *> LoadSegments); 199 200 void printValue(uint64_t Type, uint64_t Value); 201 202 StringRef getDynamicString(uint64_t Offset) const; 203 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 204 bool &IsDefault) const; 205 void LoadVersionMap() const; 206 void LoadVersionNeeds(const Elf_Shdr *ec) const; 207 void LoadVersionDefs(const Elf_Shdr *sec) const; 208 209 const ELFO *Obj; 210 DynRegionInfo DynRelRegion; 211 DynRegionInfo DynRelaRegion; 212 DynRegionInfo DynRelrRegion; 213 DynRegionInfo DynPLTRelRegion; 214 DynRegionInfo DynSymRegion; 215 DynRegionInfo DynamicTable; 216 StringRef DynamicStringTable; 217 StringRef SOName; 218 const Elf_Hash *HashTable = nullptr; 219 const Elf_GnuHash *GnuHashTable = nullptr; 220 const Elf_Shdr *DotSymtabSec = nullptr; 221 const Elf_Shdr *DotCGProfileSec = nullptr; 222 StringRef DynSymtabName; 223 ArrayRef<Elf_Word> ShndxTable; 224 225 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 226 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 227 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 228 229 // Records for each version index the corresponding Verdef or Vernaux entry. 230 // This is filled the first time LoadVersionMap() is called. 231 class VersionMapEntry : public PointerIntPair<const void *, 1> { 232 public: 233 // If the integer is 0, this is an Elf_Verdef*. 234 // If the integer is 1, this is an Elf_Vernaux*. 235 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 236 VersionMapEntry(const Elf_Verdef *verdef) 237 : PointerIntPair<const void *, 1>(verdef, 0) {} 238 VersionMapEntry(const Elf_Vernaux *vernaux) 239 : PointerIntPair<const void *, 1>(vernaux, 1) {} 240 241 bool isNull() const { return getPointer() == nullptr; } 242 bool isVerdef() const { return !isNull() && getInt() == 0; } 243 bool isVernaux() const { return !isNull() && getInt() == 1; } 244 const Elf_Verdef *getVerdef() const { 245 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 246 } 247 const Elf_Vernaux *getVernaux() const { 248 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 249 } 250 }; 251 mutable SmallVector<VersionMapEntry, 16> VersionMap; 252 253 public: 254 Elf_Dyn_Range dynamic_table() const { 255 return DynamicTable.getAsArrayRef<Elf_Dyn>(); 256 } 257 258 Elf_Sym_Range dynamic_symbols() const { 259 return DynSymRegion.getAsArrayRef<Elf_Sym>(); 260 } 261 262 Elf_Rel_Range dyn_rels() const; 263 Elf_Rela_Range dyn_relas() const; 264 Elf_Relr_Range dyn_relrs() const; 265 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 266 bool IsDynamic) const; 267 void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym, 268 StringRef &SectionName, 269 unsigned &SectionIndex) const; 270 StringRef getStaticSymbolName(uint32_t Index) const; 271 272 void printSymbolsHelper(bool IsDynamic) const; 273 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 274 const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; } 275 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; } 276 StringRef getDynamicStringTable() const { return DynamicStringTable; } 277 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; } 278 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; } 279 const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; } 280 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; } 281 const Elf_Hash *getHashTable() const { return HashTable; } 282 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; } 283 }; 284 285 template <class ELFT> 286 void ELFDumper<ELFT>::printSectionAsHex(StringRef SectionName) { 287 char *StrPtr; 288 long SectionIndex = strtol(SectionName.data(), &StrPtr, 10); 289 const Elf_Shdr *Sec; 290 if (*StrPtr) 291 Sec = unwrapOrError(Obj->getSection(SectionName)); 292 else 293 Sec = unwrapOrError(Obj->getSection((unsigned int)SectionIndex)); 294 295 StringRef SecName = unwrapOrError(Obj->getSectionName(Sec)); 296 const uint8_t *SecContent = 297 reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset); 298 299 SectionHexDump(SecName, SecContent, Sec->sh_size); 300 } 301 302 template <class ELFT> 303 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const { 304 StringRef StrTable, SymtabName; 305 size_t Entries = 0; 306 Elf_Sym_Range Syms(nullptr, nullptr); 307 if (IsDynamic) { 308 StrTable = DynamicStringTable; 309 Syms = dynamic_symbols(); 310 SymtabName = DynSymtabName; 311 if (DynSymRegion.Addr) 312 Entries = DynSymRegion.Size / DynSymRegion.EntSize; 313 } else { 314 if (!DotSymtabSec) 315 return; 316 StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 317 Syms = unwrapOrError(Obj->symbols(DotSymtabSec)); 318 SymtabName = unwrapOrError(Obj->getSectionName(DotSymtabSec)); 319 Entries = DotSymtabSec->getEntityCount(); 320 } 321 if (Syms.begin() == Syms.end()) 322 return; 323 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries); 324 for (const auto &Sym : Syms) 325 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic); 326 } 327 328 template <class ELFT> class MipsGOTParser; 329 330 template <typename ELFT> class DumpStyle { 331 public: 332 using Elf_Shdr = typename ELFT::Shdr; 333 using Elf_Sym = typename ELFT::Sym; 334 335 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {} 336 virtual ~DumpStyle() = default; 337 338 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0; 339 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0; 340 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0; 341 virtual void printSections(const ELFFile<ELFT> *Obj) = 0; 342 virtual void printSymbols(const ELFFile<ELFT> *Obj) = 0; 343 virtual void printDynamicSymbols(const ELFFile<ELFT> *Obj) = 0; 344 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0; 345 virtual void printSymtabMessage(const ELFFile<ELFT> *obj, StringRef Name, 346 size_t Offset) {} 347 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol, 348 const Elf_Sym *FirstSym, StringRef StrTable, 349 bool IsDynamic) = 0; 350 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj) = 0; 351 virtual void printSectionAsString(const ELFFile<ELFT> *Obj, 352 StringRef SectionName) = 0; 353 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0; 354 virtual void printCGProfile(const ELFFile<ELFT> *Obj) = 0; 355 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0; 356 virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0; 357 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0; 358 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0; 359 const ELFDumper<ELFT> *dumper() const { return Dumper; } 360 361 private: 362 const ELFDumper<ELFT> *Dumper; 363 }; 364 365 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> { 366 formatted_raw_ostream OS; 367 368 public: 369 TYPEDEF_ELF_TYPES(ELFT) 370 371 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 372 : DumpStyle<ELFT>(Dumper), OS(W.getOStream()) {} 373 374 void printFileHeaders(const ELFO *Obj) override; 375 void printGroupSections(const ELFFile<ELFT> *Obj) override; 376 void printRelocations(const ELFO *Obj) override; 377 void printSections(const ELFO *Obj) override; 378 void printSymbols(const ELFO *Obj) override; 379 void printDynamicSymbols(const ELFO *Obj) override; 380 void printDynamicRelocations(const ELFO *Obj) override; 381 void printSymtabMessage(const ELFO *Obj, StringRef Name, 382 size_t Offset) override; 383 void printProgramHeaders(const ELFO *Obj) override; 384 void printSectionAsString(const ELFO *Obj, StringRef SectionName) override; 385 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 386 void printCGProfile(const ELFFile<ELFT> *Obj) override; 387 void printNotes(const ELFFile<ELFT> *Obj) override; 388 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 389 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 390 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 391 392 private: 393 struct Field { 394 StringRef Str; 395 unsigned Column; 396 397 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {} 398 Field(unsigned Col) : Str(""), Column(Col) {} 399 }; 400 401 template <typename T, typename TEnum> 402 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) { 403 for (const auto &EnumItem : EnumValues) 404 if (EnumItem.Value == Value) 405 return EnumItem.AltName; 406 return to_hexString(Value, false); 407 } 408 409 formatted_raw_ostream &printField(struct Field F) { 410 if (F.Column != 0) 411 OS.PadToColumn(F.Column); 412 OS << F.Str; 413 OS.flush(); 414 return OS; 415 } 416 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym, 417 StringRef StrTable, uint32_t Bucket); 418 void printRelocHeader(unsigned SType); 419 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 420 const Elf_Rela &R, bool IsRela); 421 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 422 StringRef StrTable, bool IsDynamic) override; 423 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol, 424 const Elf_Sym *FirstSym); 425 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela); 426 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 427 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 428 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 429 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec); 430 }; 431 432 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> { 433 public: 434 TYPEDEF_ELF_TYPES(ELFT) 435 436 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper) 437 : DumpStyle<ELFT>(Dumper), W(W) {} 438 439 void printFileHeaders(const ELFO *Obj) override; 440 void printGroupSections(const ELFFile<ELFT> *Obj) override; 441 void printRelocations(const ELFO *Obj) override; 442 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj); 443 void printSections(const ELFO *Obj) override; 444 void printSymbols(const ELFO *Obj) override; 445 void printDynamicSymbols(const ELFO *Obj) override; 446 void printDynamicRelocations(const ELFO *Obj) override; 447 void printProgramHeaders(const ELFO *Obj) override; 448 void printSectionAsString(const ELFO *Obj, StringRef SectionName) override; 449 void printHashHistogram(const ELFFile<ELFT> *Obj) override; 450 void printCGProfile(const ELFFile<ELFT> *Obj) override; 451 void printNotes(const ELFFile<ELFT> *Obj) override; 452 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override; 453 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override; 454 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override; 455 456 private: 457 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab); 458 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel); 459 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First, 460 StringRef StrTable, bool IsDynamic) override; 461 462 ScopedPrinter &W; 463 }; 464 465 } // end anonymous namespace 466 467 namespace llvm { 468 469 template <class ELFT> 470 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 471 ScopedPrinter &Writer, 472 std::unique_ptr<ObjDumper> &Result) { 473 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 474 return readobj_error::success; 475 } 476 477 std::error_code createELFDumper(const object::ObjectFile *Obj, 478 ScopedPrinter &Writer, 479 std::unique_ptr<ObjDumper> &Result) { 480 // Little-endian 32-bit 481 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 482 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 483 484 // Big-endian 32-bit 485 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 486 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 487 488 // Little-endian 64-bit 489 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 490 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 491 492 // Big-endian 64-bit 493 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 494 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 495 496 return readobj_error::unsupported_obj_file_format; 497 } 498 499 } // end namespace llvm 500 501 // Iterate through the versions needed section, and place each Elf_Vernaux 502 // in the VersionMap according to its index. 503 template <class ELFT> 504 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 505 unsigned vn_size = sec->sh_size; // Size of section in bytes 506 unsigned vn_count = sec->sh_info; // Number of Verneed entries 507 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 508 const char *sec_end = sec_start + vn_size; 509 // The first Verneed entry is at the start of the section. 510 const char *p = sec_start; 511 for (unsigned i = 0; i < vn_count; i++) { 512 if (p + sizeof(Elf_Verneed) > sec_end) 513 report_fatal_error("Section ended unexpectedly while scanning " 514 "version needed records."); 515 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 516 if (vn->vn_version != ELF::VER_NEED_CURRENT) 517 report_fatal_error("Unexpected verneed version"); 518 // Iterate through the Vernaux entries 519 const char *paux = p + vn->vn_aux; 520 for (unsigned j = 0; j < vn->vn_cnt; j++) { 521 if (paux + sizeof(Elf_Vernaux) > sec_end) 522 report_fatal_error("Section ended unexpected while scanning auxiliary " 523 "version needed records."); 524 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 525 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 526 if (index >= VersionMap.size()) 527 VersionMap.resize(index + 1); 528 VersionMap[index] = VersionMapEntry(vna); 529 paux += vna->vna_next; 530 } 531 p += vn->vn_next; 532 } 533 } 534 535 // Iterate through the version definitions, and place each Elf_Verdef 536 // in the VersionMap according to its index. 537 template <class ELFT> 538 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 539 unsigned vd_size = sec->sh_size; // Size of section in bytes 540 unsigned vd_count = sec->sh_info; // Number of Verdef entries 541 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 542 const char *sec_end = sec_start + vd_size; 543 // The first Verdef entry is at the start of the section. 544 const char *p = sec_start; 545 for (unsigned i = 0; i < vd_count; i++) { 546 if (p + sizeof(Elf_Verdef) > sec_end) 547 report_fatal_error("Section ended unexpectedly while scanning " 548 "version definitions."); 549 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 550 if (vd->vd_version != ELF::VER_DEF_CURRENT) 551 report_fatal_error("Unexpected verdef version"); 552 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 553 if (index >= VersionMap.size()) 554 VersionMap.resize(index + 1); 555 VersionMap[index] = VersionMapEntry(vd); 556 p += vd->vd_next; 557 } 558 } 559 560 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const { 561 // If there is no dynamic symtab or version table, there is nothing to do. 562 if (!DynSymRegion.Addr || !dot_gnu_version_sec) 563 return; 564 565 // Has the VersionMap already been loaded? 566 if (VersionMap.size() > 0) 567 return; 568 569 // The first two version indexes are reserved. 570 // Index 0 is LOCAL, index 1 is GLOBAL. 571 VersionMap.push_back(VersionMapEntry()); 572 VersionMap.push_back(VersionMapEntry()); 573 574 if (dot_gnu_version_d_sec) 575 LoadVersionDefs(dot_gnu_version_d_sec); 576 577 if (dot_gnu_version_r_sec) 578 LoadVersionNeeds(dot_gnu_version_r_sec); 579 } 580 581 template <typename ELFO, class ELFT> 582 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 583 const typename ELFO::Elf_Shdr *Sec, 584 ScopedPrinter &W) { 585 DictScope SS(W, "Version symbols"); 586 if (!Sec) 587 return; 588 StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 589 W.printNumber("Section Name", Name, Sec->sh_name); 590 W.printHex("Address", Sec->sh_addr); 591 W.printHex("Offset", Sec->sh_offset); 592 W.printNumber("Link", Sec->sh_link); 593 594 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 595 StringRef StrTable = Dumper->getDynamicStringTable(); 596 597 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 598 ListScope Syms(W, "Symbols"); 599 for (const typename ELFO::Elf_Sym &Sym : Dumper->dynamic_symbols()) { 600 DictScope S(W, "Symbol"); 601 std::string FullSymbolName = 602 Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */); 603 W.printNumber("Version", *P); 604 W.printString("Name", FullSymbolName); 605 P += sizeof(typename ELFO::Elf_Half); 606 } 607 } 608 609 static const EnumEntry<unsigned> SymVersionFlags[] = { 610 {"Base", "BASE", VER_FLG_BASE}, 611 {"Weak", "WEAK", VER_FLG_WEAK}, 612 {"Info", "INFO", VER_FLG_INFO}}; 613 614 template <typename ELFO, class ELFT> 615 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 616 const ELFO *Obj, 617 const typename ELFO::Elf_Shdr *Sec, 618 ScopedPrinter &W) { 619 using VerDef = typename ELFO::Elf_Verdef; 620 using VerdAux = typename ELFO::Elf_Verdaux; 621 622 DictScope SD(W, "SHT_GNU_verdef"); 623 if (!Sec) 624 return; 625 626 // The number of entries in the section SHT_GNU_verdef 627 // is determined by DT_VERDEFNUM tag. 628 unsigned VerDefsNum = 0; 629 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 630 if (Dyn.d_tag == DT_VERDEFNUM) 631 VerDefsNum = Dyn.d_un.d_val; 632 } 633 const uint8_t *SecStartAddress = 634 (const uint8_t *)Obj->base() + Sec->sh_offset; 635 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 636 const uint8_t *P = SecStartAddress; 637 const typename ELFO::Elf_Shdr *StrTab = 638 unwrapOrError(Obj->getSection(Sec->sh_link)); 639 640 while (VerDefsNum--) { 641 if (P + sizeof(VerDef) > SecEndAddress) 642 report_fatal_error("invalid offset in the section"); 643 644 auto *VD = reinterpret_cast<const VerDef *>(P); 645 DictScope Def(W, "Definition"); 646 W.printNumber("Version", VD->vd_version); 647 W.printEnum("Flags", VD->vd_flags, makeArrayRef(SymVersionFlags)); 648 W.printNumber("Index", VD->vd_ndx); 649 W.printNumber("Hash", VD->vd_hash); 650 W.printString("Name", 651 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 652 VD->getAux()->vda_name))); 653 if (!VD->vd_cnt) 654 report_fatal_error("at least one definition string must exist"); 655 if (VD->vd_cnt > 2) 656 report_fatal_error("more than one predecessor is not expected"); 657 658 if (VD->vd_cnt == 2) { 659 const uint8_t *PAux = P + VD->vd_aux + VD->getAux()->vda_next; 660 const VerdAux *Aux = reinterpret_cast<const VerdAux *>(PAux); 661 W.printString("Predecessor", 662 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 663 Aux->vda_name))); 664 } 665 666 P += VD->vd_next; 667 } 668 } 669 670 template <typename ELFO, class ELFT> 671 static void printVersionDependencySection(ELFDumper<ELFT> *Dumper, 672 const ELFO *Obj, 673 const typename ELFO::Elf_Shdr *Sec, 674 ScopedPrinter &W) { 675 using VerNeed = typename ELFO::Elf_Verneed; 676 using VernAux = typename ELFO::Elf_Vernaux; 677 678 DictScope SD(W, "SHT_GNU_verneed"); 679 if (!Sec) 680 return; 681 682 unsigned VerNeedNum = 0; 683 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) 684 if (Dyn.d_tag == DT_VERNEEDNUM) 685 VerNeedNum = Dyn.d_un.d_val; 686 687 const uint8_t *SecData = (const uint8_t *)Obj->base() + Sec->sh_offset; 688 const typename ELFO::Elf_Shdr *StrTab = 689 unwrapOrError(Obj->getSection(Sec->sh_link)); 690 691 const uint8_t *P = SecData; 692 for (unsigned I = 0; I < VerNeedNum; ++I) { 693 const VerNeed *Need = reinterpret_cast<const VerNeed *>(P); 694 DictScope Entry(W, "Dependency"); 695 W.printNumber("Version", Need->vn_version); 696 W.printNumber("Count", Need->vn_cnt); 697 W.printString("FileName", 698 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 699 Need->vn_file))); 700 701 const uint8_t *PAux = P + Need->vn_aux; 702 for (unsigned J = 0; J < Need->vn_cnt; ++J) { 703 const VernAux *Aux = reinterpret_cast<const VernAux *>(PAux); 704 DictScope Entry(W, "Entry"); 705 W.printNumber("Hash", Aux->vna_hash); 706 W.printEnum("Flags", Aux->vna_flags, makeArrayRef(SymVersionFlags)); 707 W.printNumber("Index", Aux->vna_other); 708 W.printString("Name", 709 StringRef((const char *)(Obj->base() + StrTab->sh_offset + 710 Aux->vna_name))); 711 PAux += Aux->vna_next; 712 } 713 P += Need->vn_next; 714 } 715 } 716 717 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 718 // Dump version symbol section. 719 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 720 721 // Dump version definition section. 722 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 723 724 // Dump version dependency section. 725 printVersionDependencySection(this, Obj, dot_gnu_version_r_sec, W); 726 } 727 728 template <typename ELFT> 729 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 730 const Elf_Sym *symb, 731 bool &IsDefault) const { 732 // This is a dynamic symbol. Look in the GNU symbol version table. 733 if (!dot_gnu_version_sec) { 734 // No version table. 735 IsDefault = false; 736 return StringRef(""); 737 } 738 739 // Determine the position in the symbol table of this entry. 740 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 741 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) / 742 sizeof(Elf_Sym); 743 744 // Get the corresponding version index entry 745 const Elf_Versym *vs = unwrapOrError( 746 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index)); 747 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 748 749 // Special markers for unversioned symbols. 750 if (version_index == ELF::VER_NDX_LOCAL || 751 version_index == ELF::VER_NDX_GLOBAL) { 752 IsDefault = false; 753 return StringRef(""); 754 } 755 756 // Lookup this symbol in the version table 757 LoadVersionMap(); 758 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 759 reportError("Invalid version entry"); 760 const VersionMapEntry &entry = VersionMap[version_index]; 761 762 // Get the version name string 763 size_t name_offset; 764 if (entry.isVerdef()) { 765 // The first Verdaux entry holds the name. 766 name_offset = entry.getVerdef()->getAux()->vda_name; 767 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 768 } else { 769 name_offset = entry.getVernaux()->vna_name; 770 IsDefault = false; 771 } 772 if (name_offset >= StrTab.size()) 773 reportError("Invalid string offset"); 774 return StringRef(StrTab.data() + name_offset); 775 } 776 777 template <typename ELFT> 778 StringRef ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const { 779 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*DotSymtabSec)); 780 Elf_Sym_Range Syms = unwrapOrError(Obj->symbols(DotSymtabSec)); 781 if (Index >= Syms.size()) 782 reportError("Invalid symbol index"); 783 const Elf_Sym *Sym = &Syms[Index]; 784 return unwrapOrError(Sym->getName(StrTable)); 785 } 786 787 template <typename ELFT> 788 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 789 StringRef StrTable, 790 bool IsDynamic) const { 791 StringRef SymbolName = unwrapOrError(Symbol->getName(StrTable)); 792 if (!IsDynamic) 793 return SymbolName; 794 795 std::string FullSymbolName(SymbolName); 796 797 bool IsDefault; 798 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 799 FullSymbolName += (IsDefault ? "@@" : "@"); 800 FullSymbolName += Version; 801 return FullSymbolName; 802 } 803 804 template <typename ELFT> 805 void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol, 806 const Elf_Sym *FirstSym, 807 StringRef &SectionName, 808 unsigned &SectionIndex) const { 809 SectionIndex = Symbol->st_shndx; 810 if (Symbol->isUndefined()) 811 SectionName = "Undefined"; 812 else if (Symbol->isProcessorSpecific()) 813 SectionName = "Processor Specific"; 814 else if (Symbol->isOSSpecific()) 815 SectionName = "Operating System Specific"; 816 else if (Symbol->isAbsolute()) 817 SectionName = "Absolute"; 818 else if (Symbol->isCommon()) 819 SectionName = "Common"; 820 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 821 SectionName = "Reserved"; 822 else { 823 if (SectionIndex == SHN_XINDEX) 824 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 825 Symbol, FirstSym, ShndxTable)); 826 const typename ELFT::Shdr *Sec = 827 unwrapOrError(Obj->getSection(SectionIndex)); 828 SectionName = unwrapOrError(Obj->getSectionName(Sec)); 829 } 830 } 831 832 template <class ELFO> 833 static const typename ELFO::Elf_Shdr * 834 findNotEmptySectionByAddress(const ELFO *Obj, uint64_t Addr) { 835 for (const auto &Shdr : unwrapOrError(Obj->sections())) 836 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0) 837 return &Shdr; 838 return nullptr; 839 } 840 841 template <class ELFO> 842 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 843 StringRef Name) { 844 for (const auto &Shdr : unwrapOrError(Obj.sections())) { 845 if (Name == unwrapOrError(Obj.getSectionName(&Shdr))) 846 return &Shdr; 847 } 848 return nullptr; 849 } 850 851 static const EnumEntry<unsigned> ElfClass[] = { 852 {"None", "none", ELF::ELFCLASSNONE}, 853 {"32-bit", "ELF32", ELF::ELFCLASS32}, 854 {"64-bit", "ELF64", ELF::ELFCLASS64}, 855 }; 856 857 static const EnumEntry<unsigned> ElfDataEncoding[] = { 858 {"None", "none", ELF::ELFDATANONE}, 859 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB}, 860 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB}, 861 }; 862 863 static const EnumEntry<unsigned> ElfObjectFileType[] = { 864 {"None", "NONE (none)", ELF::ET_NONE}, 865 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL}, 866 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC}, 867 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN}, 868 {"Core", "CORE (Core file)", ELF::ET_CORE}, 869 }; 870 871 static const EnumEntry<unsigned> ElfOSABI[] = { 872 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE}, 873 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX}, 874 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD}, 875 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX}, 876 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD}, 877 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS}, 878 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX}, 879 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX}, 880 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD}, 881 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64}, 882 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO}, 883 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD}, 884 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS}, 885 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK}, 886 {"AROS", "AROS", ELF::ELFOSABI_AROS}, 887 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS}, 888 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI}, 889 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE} 890 }; 891 892 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = { 893 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}, 894 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL}, 895 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D} 896 }; 897 898 static const EnumEntry<unsigned> ARMElfOSABI[] = { 899 {"ARM", "ARM", ELF::ELFOSABI_ARM} 900 }; 901 902 static const EnumEntry<unsigned> C6000ElfOSABI[] = { 903 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI}, 904 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX} 905 }; 906 907 static const EnumEntry<unsigned> ElfMachineType[] = { 908 ENUM_ENT(EM_NONE, "None"), 909 ENUM_ENT(EM_M32, "WE32100"), 910 ENUM_ENT(EM_SPARC, "Sparc"), 911 ENUM_ENT(EM_386, "Intel 80386"), 912 ENUM_ENT(EM_68K, "MC68000"), 913 ENUM_ENT(EM_88K, "MC88000"), 914 ENUM_ENT(EM_IAMCU, "EM_IAMCU"), 915 ENUM_ENT(EM_860, "Intel 80860"), 916 ENUM_ENT(EM_MIPS, "MIPS R3000"), 917 ENUM_ENT(EM_S370, "IBM System/370"), 918 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"), 919 ENUM_ENT(EM_PARISC, "HPPA"), 920 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"), 921 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"), 922 ENUM_ENT(EM_960, "Intel 80960"), 923 ENUM_ENT(EM_PPC, "PowerPC"), 924 ENUM_ENT(EM_PPC64, "PowerPC64"), 925 ENUM_ENT(EM_S390, "IBM S/390"), 926 ENUM_ENT(EM_SPU, "SPU"), 927 ENUM_ENT(EM_V800, "NEC V800 series"), 928 ENUM_ENT(EM_FR20, "Fujistsu FR20"), 929 ENUM_ENT(EM_RH32, "TRW RH-32"), 930 ENUM_ENT(EM_RCE, "Motorola RCE"), 931 ENUM_ENT(EM_ARM, "ARM"), 932 ENUM_ENT(EM_ALPHA, "EM_ALPHA"), 933 ENUM_ENT(EM_SH, "Hitachi SH"), 934 ENUM_ENT(EM_SPARCV9, "Sparc v9"), 935 ENUM_ENT(EM_TRICORE, "Siemens Tricore"), 936 ENUM_ENT(EM_ARC, "ARC"), 937 ENUM_ENT(EM_H8_300, "Hitachi H8/300"), 938 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"), 939 ENUM_ENT(EM_H8S, "Hitachi H8S"), 940 ENUM_ENT(EM_H8_500, "Hitachi H8/500"), 941 ENUM_ENT(EM_IA_64, "Intel IA-64"), 942 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"), 943 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"), 944 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"), 945 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"), 946 ENUM_ENT(EM_PCP, "Siemens PCP"), 947 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"), 948 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"), 949 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"), 950 ENUM_ENT(EM_ME16, "Toyota ME16 processor"), 951 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"), 952 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"), 953 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"), 954 ENUM_ENT(EM_PDSP, "Sony DSP processor"), 955 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"), 956 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"), 957 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"), 958 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"), 959 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"), 960 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"), 961 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"), 962 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"), 963 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"), 964 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"), 965 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"), 966 ENUM_ENT(EM_VAX, "Digital VAX"), 967 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"), 968 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"), 969 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"), 970 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"), 971 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"), 972 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"), 973 ENUM_ENT(EM_PRISM, "Vitesse Prism"), 974 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"), 975 ENUM_ENT(EM_FR30, "Fujitsu FR30"), 976 ENUM_ENT(EM_D10V, "Mitsubishi D10V"), 977 ENUM_ENT(EM_D30V, "Mitsubishi D30V"), 978 ENUM_ENT(EM_V850, "NEC v850"), 979 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"), 980 ENUM_ENT(EM_MN10300, "Matsushita MN10300"), 981 ENUM_ENT(EM_MN10200, "Matsushita MN10200"), 982 ENUM_ENT(EM_PJ, "picoJava"), 983 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"), 984 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"), 985 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"), 986 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"), 987 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"), 988 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"), 989 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"), 990 ENUM_ENT(EM_SNP1K, "EM_SNP1K"), 991 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"), 992 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"), 993 ENUM_ENT(EM_MAX, "MAX Processor"), 994 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"), 995 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"), 996 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"), 997 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"), 998 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"), 999 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"), 1000 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"), 1001 ENUM_ENT(EM_UNICORE, "Unicore"), 1002 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"), 1003 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"), 1004 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"), 1005 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"), 1006 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"), 1007 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"), 1008 ENUM_ENT(EM_M16C, "Renesas M16C"), 1009 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"), 1010 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"), 1011 ENUM_ENT(EM_M32C, "Renesas M32C"), 1012 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"), 1013 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"), 1014 ENUM_ENT(EM_SHARC, "EM_SHARC"), 1015 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"), 1016 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"), 1017 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"), 1018 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"), 1019 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"), 1020 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"), 1021 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"), 1022 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"), 1023 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"), 1024 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"), 1025 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"), 1026 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"), 1027 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"), 1028 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"), 1029 ENUM_ENT(EM_8051, "Intel 8051 and variants"), 1030 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"), 1031 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"), 1032 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"), 1033 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"), 1034 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"), 1035 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"), 1036 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"), 1037 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"), 1038 ENUM_ENT(EM_RX, "Renesas RX"), 1039 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"), 1040 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"), 1041 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"), 1042 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"), 1043 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"), 1044 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"), 1045 ENUM_ENT(EM_L10M, "EM_L10M"), 1046 ENUM_ENT(EM_K10M, "EM_K10M"), 1047 ENUM_ENT(EM_AARCH64, "AArch64"), 1048 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"), 1049 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"), 1050 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"), 1051 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"), 1052 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"), 1053 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"), 1054 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"), 1055 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"), 1056 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"), 1057 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"), 1058 ENUM_ENT(EM_OPEN8, "EM_OPEN8"), 1059 ENUM_ENT(EM_RL78, "Renesas RL78"), 1060 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"), 1061 ENUM_ENT(EM_78KOR, "EM_78KOR"), 1062 ENUM_ENT(EM_56800EX, "EM_56800EX"), 1063 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"), 1064 ENUM_ENT(EM_RISCV, "RISC-V"), 1065 ENUM_ENT(EM_WEBASSEMBLY, "EM_WEBASSEMBLY"), 1066 ENUM_ENT(EM_LANAI, "EM_LANAI"), 1067 ENUM_ENT(EM_BPF, "EM_BPF"), 1068 }; 1069 1070 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 1071 {"Local", "LOCAL", ELF::STB_LOCAL}, 1072 {"Global", "GLOBAL", ELF::STB_GLOBAL}, 1073 {"Weak", "WEAK", ELF::STB_WEAK}, 1074 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}}; 1075 1076 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = { 1077 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT}, 1078 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL}, 1079 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN}, 1080 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}}; 1081 1082 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 1083 {"None", "NOTYPE", ELF::STT_NOTYPE}, 1084 {"Object", "OBJECT", ELF::STT_OBJECT}, 1085 {"Function", "FUNC", ELF::STT_FUNC}, 1086 {"Section", "SECTION", ELF::STT_SECTION}, 1087 {"File", "FILE", ELF::STT_FILE}, 1088 {"Common", "COMMON", ELF::STT_COMMON}, 1089 {"TLS", "TLS", ELF::STT_TLS}, 1090 {"GNU_IFunc", "IFUNC", ELF::STT_GNU_IFUNC}}; 1091 1092 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 1093 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL } 1094 }; 1095 1096 static const char *getGroupType(uint32_t Flag) { 1097 if (Flag & ELF::GRP_COMDAT) 1098 return "COMDAT"; 1099 else 1100 return "(unknown)"; 1101 } 1102 1103 static const EnumEntry<unsigned> ElfSectionFlags[] = { 1104 ENUM_ENT(SHF_WRITE, "W"), 1105 ENUM_ENT(SHF_ALLOC, "A"), 1106 ENUM_ENT(SHF_EXCLUDE, "E"), 1107 ENUM_ENT(SHF_EXECINSTR, "X"), 1108 ENUM_ENT(SHF_MERGE, "M"), 1109 ENUM_ENT(SHF_STRINGS, "S"), 1110 ENUM_ENT(SHF_INFO_LINK, "I"), 1111 ENUM_ENT(SHF_LINK_ORDER, "L"), 1112 ENUM_ENT(SHF_OS_NONCONFORMING, "o"), 1113 ENUM_ENT(SHF_GROUP, "G"), 1114 ENUM_ENT(SHF_TLS, "T"), 1115 ENUM_ENT(SHF_MASKOS, "o"), 1116 ENUM_ENT(SHF_MASKPROC, "p"), 1117 ENUM_ENT_1(SHF_COMPRESSED), 1118 }; 1119 1120 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = { 1121 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 1122 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION) 1123 }; 1124 1125 static const EnumEntry<unsigned> ElfARMSectionFlags[] = { 1126 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE) 1127 }; 1128 1129 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = { 1130 LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL) 1131 }; 1132 1133 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = { 1134 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES), 1135 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES ), 1136 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL ), 1137 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP), 1138 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL ), 1139 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE ), 1140 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR ), 1141 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING ) 1142 }; 1143 1144 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = { 1145 LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE) 1146 }; 1147 1148 static std::string getGNUFlags(uint64_t Flags) { 1149 std::string Str; 1150 for (auto Entry : ElfSectionFlags) { 1151 uint64_t Flag = Entry.Value & Flags; 1152 Flags &= ~Entry.Value; 1153 switch (Flag) { 1154 case ELF::SHF_WRITE: 1155 case ELF::SHF_ALLOC: 1156 case ELF::SHF_EXECINSTR: 1157 case ELF::SHF_MERGE: 1158 case ELF::SHF_STRINGS: 1159 case ELF::SHF_INFO_LINK: 1160 case ELF::SHF_LINK_ORDER: 1161 case ELF::SHF_OS_NONCONFORMING: 1162 case ELF::SHF_GROUP: 1163 case ELF::SHF_TLS: 1164 case ELF::SHF_EXCLUDE: 1165 Str += Entry.AltName; 1166 break; 1167 default: 1168 if (Flag & ELF::SHF_MASKOS) 1169 Str += "o"; 1170 else if (Flag & ELF::SHF_MASKPROC) 1171 Str += "p"; 1172 else if (Flag) 1173 Str += "x"; 1174 } 1175 } 1176 return Str; 1177 } 1178 1179 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 1180 // Check potentially overlapped processor-specific 1181 // program header type. 1182 switch (Arch) { 1183 case ELF::EM_ARM: 1184 switch (Type) { 1185 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 1186 } 1187 case ELF::EM_MIPS: 1188 case ELF::EM_MIPS_RS3_LE: 1189 switch (Type) { 1190 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 1191 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 1192 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 1193 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 1194 } 1195 } 1196 1197 switch (Type) { 1198 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 1199 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 1200 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 1201 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 1202 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 1203 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 1204 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 1205 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 1206 1207 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 1208 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 1209 1210 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 1211 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 1212 1213 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE); 1214 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED); 1215 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA); 1216 1217 default: return ""; 1218 } 1219 } 1220 1221 static std::string getElfPtType(unsigned Arch, unsigned Type) { 1222 switch (Type) { 1223 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL) 1224 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD) 1225 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC) 1226 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP) 1227 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE) 1228 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB) 1229 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR) 1230 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS) 1231 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME) 1232 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND) 1233 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK) 1234 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO) 1235 default: 1236 // All machine specific PT_* types 1237 switch (Arch) { 1238 case ELF::EM_ARM: 1239 if (Type == ELF::PT_ARM_EXIDX) 1240 return "EXIDX"; 1241 return ""; 1242 case ELF::EM_MIPS: 1243 case ELF::EM_MIPS_RS3_LE: 1244 switch (Type) { 1245 case PT_MIPS_REGINFO: 1246 return "REGINFO"; 1247 case PT_MIPS_RTPROC: 1248 return "RTPROC"; 1249 case PT_MIPS_OPTIONS: 1250 return "OPTIONS"; 1251 case PT_MIPS_ABIFLAGS: 1252 return "ABIFLAGS"; 1253 } 1254 return ""; 1255 } 1256 } 1257 return std::string("<unknown>: ") + to_string(format_hex(Type, 1)); 1258 } 1259 1260 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 1261 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 1262 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 1263 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 1264 }; 1265 1266 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 1267 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 1268 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 1269 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 1270 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 1271 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 1272 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 1273 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 1274 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 1275 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 1276 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 1277 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 1278 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 1279 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 1280 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 1281 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 1282 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 1283 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 1284 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 1285 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 1286 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 1287 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 1288 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 1289 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 1290 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 1291 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 1292 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 1293 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 1294 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 1295 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 1296 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 1297 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 1298 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 1299 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 1300 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 1301 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 1302 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 1303 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 1304 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 1305 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 1306 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 1307 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 1308 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 1309 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 1310 }; 1311 1312 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = { 1313 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE), 1314 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600), 1315 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630), 1316 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880), 1317 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670), 1318 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710), 1319 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730), 1320 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770), 1321 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR), 1322 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS), 1323 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER), 1324 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD), 1325 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO), 1326 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS), 1327 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS), 1328 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN), 1329 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS), 1330 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600), 1331 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601), 1332 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700), 1333 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701), 1334 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702), 1335 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703), 1336 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704), 1337 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801), 1338 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802), 1339 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803), 1340 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810), 1341 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900), 1342 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902), 1343 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904), 1344 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906), 1345 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK) 1346 }; 1347 1348 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = { 1349 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVC), 1350 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_SINGLE), 1351 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_DOUBLE), 1352 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_FLOAT_ABI_QUAD), 1353 LLVM_READOBJ_ENUM_ENT(ELF, EF_RISCV_RVE) 1354 }; 1355 1356 static const EnumEntry<unsigned> ElfSymOtherFlags[] = { 1357 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL), 1358 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN), 1359 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED) 1360 }; 1361 1362 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = { 1363 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1364 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1365 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC), 1366 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS) 1367 }; 1368 1369 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = { 1370 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL), 1371 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT), 1372 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16) 1373 }; 1374 1375 static const char *getElfMipsOptionsOdkType(unsigned Odk) { 1376 switch (Odk) { 1377 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL); 1378 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO); 1379 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS); 1380 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD); 1381 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH); 1382 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL); 1383 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS); 1384 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND); 1385 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR); 1386 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP); 1387 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT); 1388 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE); 1389 default: 1390 return "Unknown"; 1391 } 1392 } 1393 1394 template <typename ELFT> 1395 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, ScopedPrinter &Writer) 1396 : ObjDumper(Writer), Obj(Obj) { 1397 SmallVector<const Elf_Phdr *, 4> LoadSegments; 1398 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 1399 if (Phdr.p_type == ELF::PT_DYNAMIC) { 1400 DynamicTable = createDRIFrom(&Phdr, sizeof(Elf_Dyn)); 1401 continue; 1402 } 1403 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 1404 continue; 1405 LoadSegments.push_back(&Phdr); 1406 } 1407 1408 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1409 switch (Sec.sh_type) { 1410 case ELF::SHT_SYMTAB: 1411 if (DotSymtabSec != nullptr) 1412 reportError("Multiple SHT_SYMTAB"); 1413 DotSymtabSec = &Sec; 1414 break; 1415 case ELF::SHT_DYNSYM: 1416 if (DynSymRegion.Size) 1417 reportError("Multiple SHT_DYNSYM"); 1418 DynSymRegion = createDRIFrom(&Sec); 1419 // This is only used (if Elf_Shdr present)for naming section in GNU style 1420 DynSymtabName = unwrapOrError(Obj->getSectionName(&Sec)); 1421 DynamicStringTable = unwrapOrError(Obj->getStringTableForSymtab(Sec)); 1422 break; 1423 case ELF::SHT_SYMTAB_SHNDX: 1424 ShndxTable = unwrapOrError(Obj->getSHNDXTable(Sec)); 1425 break; 1426 case ELF::SHT_GNU_versym: 1427 if (dot_gnu_version_sec != nullptr) 1428 reportError("Multiple SHT_GNU_versym"); 1429 dot_gnu_version_sec = &Sec; 1430 break; 1431 case ELF::SHT_GNU_verdef: 1432 if (dot_gnu_version_d_sec != nullptr) 1433 reportError("Multiple SHT_GNU_verdef"); 1434 dot_gnu_version_d_sec = &Sec; 1435 break; 1436 case ELF::SHT_GNU_verneed: 1437 if (dot_gnu_version_r_sec != nullptr) 1438 reportError("Multiple SHT_GNU_verneed"); 1439 dot_gnu_version_r_sec = &Sec; 1440 break; 1441 case ELF::SHT_LLVM_CALL_GRAPH_PROFILE: 1442 if (DotCGProfileSec != nullptr) 1443 reportError("Multiple .note.llvm.cgprofile"); 1444 DotCGProfileSec = &Sec; 1445 } 1446 } 1447 1448 parseDynamicTable(LoadSegments); 1449 1450 if (opts::Output == opts::GNU) 1451 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this)); 1452 else 1453 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this)); 1454 } 1455 1456 template <typename ELFT> 1457 void ELFDumper<ELFT>::parseDynamicTable( 1458 ArrayRef<const Elf_Phdr *> LoadSegments) { 1459 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 1460 const Elf_Phdr *const *I = 1461 std::upper_bound(LoadSegments.begin(), LoadSegments.end(), VAddr, 1462 [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) { 1463 return VAddr < Phdr->p_vaddr; 1464 }); 1465 if (I == LoadSegments.begin()) 1466 report_fatal_error("Virtual address is not in any segment"); 1467 --I; 1468 const Elf_Phdr &Phdr = **I; 1469 uint64_t Delta = VAddr - Phdr.p_vaddr; 1470 if (Delta >= Phdr.p_filesz) 1471 report_fatal_error("Virtual address is not in any segment"); 1472 return Obj->base() + Phdr.p_offset + Delta; 1473 }; 1474 1475 uint64_t SONameOffset = 0; 1476 const char *StringTableBegin = nullptr; 1477 uint64_t StringTableSize = 0; 1478 for (const Elf_Dyn &Dyn : dynamic_table()) { 1479 switch (Dyn.d_tag) { 1480 case ELF::DT_HASH: 1481 HashTable = 1482 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 1483 break; 1484 case ELF::DT_GNU_HASH: 1485 GnuHashTable = 1486 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 1487 break; 1488 case ELF::DT_STRTAB: 1489 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 1490 break; 1491 case ELF::DT_STRSZ: 1492 StringTableSize = Dyn.getVal(); 1493 break; 1494 case ELF::DT_SYMTAB: 1495 DynSymRegion.Addr = toMappedAddr(Dyn.getPtr()); 1496 DynSymRegion.EntSize = sizeof(Elf_Sym); 1497 break; 1498 case ELF::DT_RELA: 1499 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 1500 break; 1501 case ELF::DT_RELASZ: 1502 DynRelaRegion.Size = Dyn.getVal(); 1503 break; 1504 case ELF::DT_RELAENT: 1505 DynRelaRegion.EntSize = Dyn.getVal(); 1506 break; 1507 case ELF::DT_SONAME: 1508 SONameOffset = Dyn.getVal(); 1509 break; 1510 case ELF::DT_REL: 1511 DynRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1512 break; 1513 case ELF::DT_RELSZ: 1514 DynRelRegion.Size = Dyn.getVal(); 1515 break; 1516 case ELF::DT_RELENT: 1517 DynRelRegion.EntSize = Dyn.getVal(); 1518 break; 1519 case ELF::DT_RELR: 1520 case ELF::DT_ANDROID_RELR: 1521 DynRelrRegion.Addr = toMappedAddr(Dyn.getPtr()); 1522 break; 1523 case ELF::DT_RELRSZ: 1524 case ELF::DT_ANDROID_RELRSZ: 1525 DynRelrRegion.Size = Dyn.getVal(); 1526 break; 1527 case ELF::DT_RELRENT: 1528 case ELF::DT_ANDROID_RELRENT: 1529 DynRelrRegion.EntSize = Dyn.getVal(); 1530 break; 1531 case ELF::DT_PLTREL: 1532 if (Dyn.getVal() == DT_REL) 1533 DynPLTRelRegion.EntSize = sizeof(Elf_Rel); 1534 else if (Dyn.getVal() == DT_RELA) 1535 DynPLTRelRegion.EntSize = sizeof(Elf_Rela); 1536 else 1537 reportError(Twine("unknown DT_PLTREL value of ") + 1538 Twine((uint64_t)Dyn.getVal())); 1539 break; 1540 case ELF::DT_JMPREL: 1541 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getPtr()); 1542 break; 1543 case ELF::DT_PLTRELSZ: 1544 DynPLTRelRegion.Size = Dyn.getVal(); 1545 break; 1546 } 1547 } 1548 if (StringTableBegin) 1549 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 1550 if (SONameOffset) 1551 SOName = getDynamicString(SONameOffset); 1552 } 1553 1554 template <typename ELFT> 1555 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const { 1556 return DynRelRegion.getAsArrayRef<Elf_Rel>(); 1557 } 1558 1559 template <typename ELFT> 1560 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1561 return DynRelaRegion.getAsArrayRef<Elf_Rela>(); 1562 } 1563 1564 template <typename ELFT> 1565 typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const { 1566 return DynRelrRegion.getAsArrayRef<Elf_Relr>(); 1567 } 1568 1569 template<class ELFT> 1570 void ELFDumper<ELFT>::printFileHeaders() { 1571 ELFDumperStyle->printFileHeaders(Obj); 1572 } 1573 1574 template<class ELFT> 1575 void ELFDumper<ELFT>::printSections() { 1576 ELFDumperStyle->printSections(Obj); 1577 } 1578 1579 template<class ELFT> 1580 void ELFDumper<ELFT>::printRelocations() { 1581 ELFDumperStyle->printRelocations(Obj); 1582 } 1583 1584 template <class ELFT> void ELFDumper<ELFT>::printProgramHeaders() { 1585 ELFDumperStyle->printProgramHeaders(Obj); 1586 } 1587 1588 template <class ELFT> 1589 void ELFDumper<ELFT>::printSectionAsString(StringRef SectionName) { 1590 ELFDumperStyle->printSectionAsString(Obj, SectionName); 1591 } 1592 1593 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() { 1594 ELFDumperStyle->printDynamicRelocations(Obj); 1595 } 1596 1597 template<class ELFT> 1598 void ELFDumper<ELFT>::printSymbols() { 1599 ELFDumperStyle->printSymbols(Obj); 1600 } 1601 1602 template<class ELFT> 1603 void ELFDumper<ELFT>::printDynamicSymbols() { 1604 ELFDumperStyle->printDynamicSymbols(Obj); 1605 } 1606 1607 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() { 1608 ELFDumperStyle->printHashHistogram(Obj); 1609 } 1610 1611 template <class ELFT> void ELFDumper<ELFT>::printCGProfile() { 1612 ELFDumperStyle->printCGProfile(Obj); 1613 } 1614 1615 template <class ELFT> void ELFDumper<ELFT>::printNotes() { 1616 ELFDumperStyle->printNotes(Obj); 1617 } 1618 1619 template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() { 1620 ELFDumperStyle->printELFLinkerOptions(Obj); 1621 } 1622 1623 static const char *getTypeString(unsigned Arch, uint64_t Type) { 1624 #define DYNAMIC_TAG(n, v) 1625 switch (Arch) { 1626 case EM_HEXAGON: 1627 switch (Type) { 1628 #define HEXAGON_DYNAMIC_TAG(name, value) \ 1629 case DT_##name: \ 1630 return #name; 1631 #include "llvm/BinaryFormat/DynamicTags.def" 1632 #undef HEXAGON_DYNAMIC_TAG 1633 } 1634 1635 case EM_MIPS: 1636 switch (Type) { 1637 #define MIPS_DYNAMIC_TAG(name, value) \ 1638 case DT_##name: \ 1639 return #name; 1640 #include "llvm/BinaryFormat/DynamicTags.def" 1641 #undef MIPS_DYNAMIC_TAG 1642 } 1643 1644 case EM_PPC64: 1645 switch(Type) { 1646 #define PPC64_DYNAMIC_TAG(name, value) \ 1647 case DT_##name: \ 1648 return #name; 1649 #include "llvm/BinaryFormat/DynamicTags.def" 1650 #undef PPC64_DYNAMIC_TAG 1651 } 1652 } 1653 #undef DYNAMIC_TAG 1654 switch (Type) { 1655 // Now handle all dynamic tags except the architecture specific ones 1656 #define MIPS_DYNAMIC_TAG(name, value) 1657 #define HEXAGON_DYNAMIC_TAG(name, value) 1658 #define PPC64_DYNAMIC_TAG(name, value) 1659 // Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc. 1660 #define DYNAMIC_TAG_MARKER(name, value) 1661 #define DYNAMIC_TAG(name, value) \ 1662 case DT_##name: \ 1663 return #name; 1664 #include "llvm/BinaryFormat/DynamicTags.def" 1665 #undef DYNAMIC_TAG 1666 #undef MIPS_DYNAMIC_TAG 1667 #undef HEXAGON_DYNAMIC_TAG 1668 #undef PPC64_DYNAMIC_TAG 1669 #undef DYNAMIC_TAG_MARKER 1670 default: return "unknown"; 1671 } 1672 } 1673 1674 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1675 { #enum, prefix##_##enum } 1676 1677 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1678 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1679 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1680 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1681 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1682 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1683 }; 1684 1685 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1686 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1687 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1688 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1689 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1690 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1691 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1692 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1693 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1694 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1695 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1696 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1697 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1698 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1699 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1700 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1701 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1702 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1703 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1704 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1705 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1706 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1707 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1708 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1709 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1710 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1711 }; 1712 1713 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1714 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1715 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1716 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1717 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1718 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1719 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1720 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1721 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1722 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1723 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1724 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1725 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1726 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1727 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1728 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1729 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1730 }; 1731 1732 #undef LLVM_READOBJ_DT_FLAG_ENT 1733 1734 template <typename T, typename TFlag> 1735 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1736 using FlagEntry = EnumEntry<TFlag>; 1737 using FlagVector = SmallVector<FlagEntry, 10>; 1738 FlagVector SetFlags; 1739 1740 for (const auto &Flag : Flags) { 1741 if (Flag.Value == 0) 1742 continue; 1743 1744 if ((Value & Flag.Value) == Flag.Value) 1745 SetFlags.push_back(Flag); 1746 } 1747 1748 for (const auto &Flag : SetFlags) { 1749 OS << Flag.Name << " "; 1750 } 1751 } 1752 1753 template <class ELFT> 1754 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1755 if (Value >= DynamicStringTable.size()) 1756 reportError("Invalid dynamic string table reference"); 1757 return StringRef(DynamicStringTable.data() + Value); 1758 } 1759 1760 static void printLibrary(raw_ostream &OS, const Twine &Tag, const Twine &Name) { 1761 OS << Tag << ": [" << Name << "]"; 1762 } 1763 1764 template <class ELFT> 1765 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1766 raw_ostream &OS = W.getOStream(); 1767 const char* ConvChar = (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64; 1768 switch (Type) { 1769 case DT_PLTREL: 1770 if (Value == DT_REL) { 1771 OS << "REL"; 1772 break; 1773 } else if (Value == DT_RELA) { 1774 OS << "RELA"; 1775 break; 1776 } 1777 LLVM_FALLTHROUGH; 1778 case DT_PLTGOT: 1779 case DT_HASH: 1780 case DT_STRTAB: 1781 case DT_SYMTAB: 1782 case DT_RELA: 1783 case DT_INIT: 1784 case DT_FINI: 1785 case DT_REL: 1786 case DT_JMPREL: 1787 case DT_INIT_ARRAY: 1788 case DT_FINI_ARRAY: 1789 case DT_PREINIT_ARRAY: 1790 case DT_DEBUG: 1791 case DT_VERDEF: 1792 case DT_VERNEED: 1793 case DT_VERSYM: 1794 case DT_GNU_HASH: 1795 case DT_NULL: 1796 case DT_MIPS_BASE_ADDRESS: 1797 case DT_MIPS_GOTSYM: 1798 case DT_MIPS_RLD_MAP: 1799 case DT_MIPS_RLD_MAP_REL: 1800 case DT_MIPS_PLTGOT: 1801 case DT_MIPS_OPTIONS: 1802 OS << format(ConvChar, Value); 1803 break; 1804 case DT_RELACOUNT: 1805 case DT_RELCOUNT: 1806 case DT_VERDEFNUM: 1807 case DT_VERNEEDNUM: 1808 case DT_MIPS_RLD_VERSION: 1809 case DT_MIPS_LOCAL_GOTNO: 1810 case DT_MIPS_SYMTABNO: 1811 case DT_MIPS_UNREFEXTNO: 1812 OS << Value; 1813 break; 1814 case DT_PLTRELSZ: 1815 case DT_RELASZ: 1816 case DT_RELAENT: 1817 case DT_STRSZ: 1818 case DT_SYMENT: 1819 case DT_RELSZ: 1820 case DT_RELENT: 1821 case DT_INIT_ARRAYSZ: 1822 case DT_FINI_ARRAYSZ: 1823 case DT_PREINIT_ARRAYSZ: 1824 case DT_ANDROID_RELSZ: 1825 case DT_ANDROID_RELASZ: 1826 OS << Value << " (bytes)"; 1827 break; 1828 case DT_NEEDED: 1829 printLibrary(OS, "Shared library", getDynamicString(Value)); 1830 break; 1831 case DT_SONAME: 1832 printLibrary(OS, "Library soname", getDynamicString(Value)); 1833 break; 1834 case DT_AUXILIARY: 1835 printLibrary(OS, "Auxiliary library", getDynamicString(Value)); 1836 break; 1837 case DT_FILTER: 1838 printLibrary(OS, "Filter library", getDynamicString(Value)); 1839 break; 1840 case DT_RPATH: 1841 case DT_RUNPATH: 1842 OS << getDynamicString(Value); 1843 break; 1844 case DT_MIPS_FLAGS: 1845 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1846 break; 1847 case DT_FLAGS: 1848 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1849 break; 1850 case DT_FLAGS_1: 1851 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1852 break; 1853 default: 1854 OS << format(ConvChar, Value); 1855 break; 1856 } 1857 } 1858 1859 template<class ELFT> 1860 void ELFDumper<ELFT>::printUnwindInfo() { 1861 const unsigned Machine = Obj->getHeader()->e_machine; 1862 if (Machine == EM_386 || Machine == EM_X86_64) { 1863 DwarfCFIEH::PrinterContext<ELFT> Ctx(W, Obj); 1864 return Ctx.printUnwindInformation(); 1865 } 1866 W.startLine() << "UnwindInfo not implemented.\n"; 1867 } 1868 1869 namespace { 1870 1871 template <> void ELFDumper<ELF32LE>::printUnwindInfo() { 1872 const unsigned Machine = Obj->getHeader()->e_machine; 1873 if (Machine == EM_ARM) { 1874 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, DotSymtabSec); 1875 return Ctx.PrintUnwindInformation(); 1876 } 1877 W.startLine() << "UnwindInfo not implemented.\n"; 1878 } 1879 1880 } // end anonymous namespace 1881 1882 template<class ELFT> 1883 void ELFDumper<ELFT>::printDynamicTable() { 1884 auto I = dynamic_table().begin(); 1885 auto E = dynamic_table().end(); 1886 1887 if (I == E) 1888 return; 1889 1890 --E; 1891 while (I != E && E->getTag() == ELF::DT_NULL) 1892 --E; 1893 if (E->getTag() != ELF::DT_NULL) 1894 ++E; 1895 ++E; 1896 1897 ptrdiff_t Total = std::distance(I, E); 1898 if (Total == 0) 1899 return; 1900 1901 raw_ostream &OS = W.getOStream(); 1902 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1903 1904 bool Is64 = ELFT::Is64Bits; 1905 1906 W.startLine() 1907 << " Tag" << (Is64 ? " " : " ") << "Type" 1908 << " " << "Name/Value\n"; 1909 while (I != E) { 1910 const Elf_Dyn &Entry = *I; 1911 uintX_t Tag = Entry.getTag(); 1912 ++I; 1913 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, opts::Output != opts::GNU) << " " 1914 << format("%-21s", getTypeString(Obj->getHeader()->e_machine, Tag)); 1915 printValue(Tag, Entry.getVal()); 1916 OS << "\n"; 1917 } 1918 1919 W.startLine() << "]\n"; 1920 } 1921 1922 template<class ELFT> 1923 void ELFDumper<ELFT>::printNeededLibraries() { 1924 ListScope D(W, "NeededLibraries"); 1925 1926 using LibsTy = std::vector<StringRef>; 1927 LibsTy Libs; 1928 1929 for (const auto &Entry : dynamic_table()) 1930 if (Entry.d_tag == ELF::DT_NEEDED) 1931 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1932 1933 std::stable_sort(Libs.begin(), Libs.end()); 1934 1935 for (const auto &L : Libs) 1936 W.startLine() << L << "\n"; 1937 } 1938 1939 1940 template <typename ELFT> 1941 void ELFDumper<ELFT>::printHashTable() { 1942 DictScope D(W, "HashTable"); 1943 if (!HashTable) 1944 return; 1945 W.printNumber("Num Buckets", HashTable->nbucket); 1946 W.printNumber("Num Chains", HashTable->nchain); 1947 W.printList("Buckets", HashTable->buckets()); 1948 W.printList("Chains", HashTable->chains()); 1949 } 1950 1951 template <typename ELFT> 1952 void ELFDumper<ELFT>::printGnuHashTable() { 1953 DictScope D(W, "GnuHashTable"); 1954 if (!GnuHashTable) 1955 return; 1956 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1957 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1958 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1959 W.printNumber("Shift Count", GnuHashTable->shift2); 1960 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1961 W.printList("Buckets", GnuHashTable->buckets()); 1962 Elf_Sym_Range Syms = dynamic_symbols(); 1963 unsigned NumSyms = std::distance(Syms.begin(), Syms.end()); 1964 if (!NumSyms) 1965 reportError("No dynamic symbol section"); 1966 W.printHexList("Values", GnuHashTable->values(NumSyms)); 1967 } 1968 1969 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1970 W.printString("LoadName", SOName); 1971 } 1972 1973 template <class ELFT> 1974 void ELFDumper<ELFT>::printAttributes() { 1975 W.startLine() << "Attributes not implemented.\n"; 1976 } 1977 1978 namespace { 1979 1980 template <> void ELFDumper<ELF32LE>::printAttributes() { 1981 if (Obj->getHeader()->e_machine != EM_ARM) { 1982 W.startLine() << "Attributes not implemented.\n"; 1983 return; 1984 } 1985 1986 DictScope BA(W, "BuildAttributes"); 1987 for (const ELFO::Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 1988 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1989 continue; 1990 1991 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Sec)); 1992 if (Contents[0] != ARMBuildAttrs::Format_Version) { 1993 errs() << "unrecognised FormatVersion: 0x" 1994 << Twine::utohexstr(Contents[0]) << '\n'; 1995 continue; 1996 } 1997 1998 W.printHex("FormatVersion", Contents[0]); 1999 if (Contents.size() == 1) 2000 continue; 2001 2002 ARMAttributeParser(&W).Parse(Contents, true); 2003 } 2004 } 2005 2006 template <class ELFT> class MipsGOTParser { 2007 public: 2008 TYPEDEF_ELF_TYPES(ELFT) 2009 using Entry = typename ELFO::Elf_Addr; 2010 using Entries = ArrayRef<Entry>; 2011 2012 const bool IsStatic; 2013 const ELFO * const Obj; 2014 2015 MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms); 2016 2017 bool hasGot() const { return !GotEntries.empty(); } 2018 bool hasPlt() const { return !PltEntries.empty(); } 2019 2020 uint64_t getGp() const; 2021 2022 const Entry *getGotLazyResolver() const; 2023 const Entry *getGotModulePointer() const; 2024 const Entry *getPltLazyResolver() const; 2025 const Entry *getPltModulePointer() const; 2026 2027 Entries getLocalEntries() const; 2028 Entries getGlobalEntries() const; 2029 Entries getOtherEntries() const; 2030 Entries getPltEntries() const; 2031 2032 uint64_t getGotAddress(const Entry * E) const; 2033 int64_t getGotOffset(const Entry * E) const; 2034 const Elf_Sym *getGotSym(const Entry *E) const; 2035 2036 uint64_t getPltAddress(const Entry * E) const; 2037 const Elf_Sym *getPltSym(const Entry *E) const; 2038 2039 StringRef getPltStrTable() const { return PltStrTable; } 2040 2041 private: 2042 const Elf_Shdr *GotSec; 2043 size_t LocalNum; 2044 size_t GlobalNum; 2045 2046 const Elf_Shdr *PltSec; 2047 const Elf_Shdr *PltRelSec; 2048 const Elf_Shdr *PltSymTable; 2049 Elf_Sym_Range GotDynSyms; 2050 StringRef PltStrTable; 2051 2052 Entries GotEntries; 2053 Entries PltEntries; 2054 }; 2055 2056 } // end anonymous namespace 2057 2058 template <class ELFT> 2059 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, Elf_Dyn_Range DynTable, 2060 Elf_Sym_Range DynSyms) 2061 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0), 2062 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr) { 2063 // See "Global Offset Table" in Chapter 5 in the following document 2064 // for detailed GOT description. 2065 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 2066 2067 // Find static GOT secton. 2068 if (IsStatic) { 2069 GotSec = findSectionByName(*Obj, ".got"); 2070 if (!GotSec) 2071 reportError("Cannot find .got section"); 2072 2073 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 2074 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2075 Content.size() / sizeof(Entry)); 2076 LocalNum = GotEntries.size(); 2077 return; 2078 } 2079 2080 // Lookup dynamic table tags which define GOT/PLT layouts. 2081 Optional<uint64_t> DtPltGot; 2082 Optional<uint64_t> DtLocalGotNum; 2083 Optional<uint64_t> DtGotSym; 2084 Optional<uint64_t> DtMipsPltGot; 2085 Optional<uint64_t> DtJmpRel; 2086 for (const auto &Entry : DynTable) { 2087 switch (Entry.getTag()) { 2088 case ELF::DT_PLTGOT: 2089 DtPltGot = Entry.getVal(); 2090 break; 2091 case ELF::DT_MIPS_LOCAL_GOTNO: 2092 DtLocalGotNum = Entry.getVal(); 2093 break; 2094 case ELF::DT_MIPS_GOTSYM: 2095 DtGotSym = Entry.getVal(); 2096 break; 2097 case ELF::DT_MIPS_PLTGOT: 2098 DtMipsPltGot = Entry.getVal(); 2099 break; 2100 case ELF::DT_JMPREL: 2101 DtJmpRel = Entry.getVal(); 2102 break; 2103 } 2104 } 2105 2106 // Find dynamic GOT section. 2107 if (DtPltGot || DtLocalGotNum || DtGotSym) { 2108 if (!DtPltGot) 2109 report_fatal_error("Cannot find PLTGOT dynamic table tag."); 2110 if (!DtLocalGotNum) 2111 report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag."); 2112 if (!DtGotSym) 2113 report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag."); 2114 2115 size_t DynSymTotal = DynSyms.size(); 2116 if (*DtGotSym > DynSymTotal) 2117 reportError("MIPS_GOTSYM exceeds a number of dynamic symbols"); 2118 2119 GotSec = findNotEmptySectionByAddress(Obj, *DtPltGot); 2120 if (!GotSec) 2121 reportError("There is no not empty GOT section at 0x" + 2122 Twine::utohexstr(*DtPltGot)); 2123 2124 LocalNum = *DtLocalGotNum; 2125 GlobalNum = DynSymTotal - *DtGotSym; 2126 2127 ArrayRef<uint8_t> Content = unwrapOrError(Obj->getSectionContents(GotSec)); 2128 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()), 2129 Content.size() / sizeof(Entry)); 2130 GotDynSyms = DynSyms.drop_front(*DtGotSym); 2131 } 2132 2133 // Find PLT section. 2134 if (DtMipsPltGot || DtJmpRel) { 2135 if (!DtMipsPltGot) 2136 report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag."); 2137 if (!DtJmpRel) 2138 report_fatal_error("Cannot find JMPREL dynamic table tag."); 2139 2140 PltSec = findNotEmptySectionByAddress(Obj, *DtMipsPltGot); 2141 if (!PltSec) 2142 report_fatal_error("There is no not empty PLTGOT section at 0x " + 2143 Twine::utohexstr(*DtMipsPltGot)); 2144 2145 PltRelSec = findNotEmptySectionByAddress(Obj, *DtJmpRel); 2146 if (!PltRelSec) 2147 report_fatal_error("There is no not empty RELPLT section at 0x" + 2148 Twine::utohexstr(*DtJmpRel)); 2149 2150 ArrayRef<uint8_t> PltContent = 2151 unwrapOrError(Obj->getSectionContents(PltSec)); 2152 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()), 2153 PltContent.size() / sizeof(Entry)); 2154 2155 PltSymTable = unwrapOrError(Obj->getSection(PltRelSec->sh_link)); 2156 PltStrTable = unwrapOrError(Obj->getStringTableForSymtab(*PltSymTable)); 2157 } 2158 } 2159 2160 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const { 2161 return GotSec->sh_addr + 0x7ff0; 2162 } 2163 2164 template <class ELFT> 2165 const typename MipsGOTParser<ELFT>::Entry * 2166 MipsGOTParser<ELFT>::getGotLazyResolver() const { 2167 return LocalNum > 0 ? &GotEntries[0] : nullptr; 2168 } 2169 2170 template <class ELFT> 2171 const typename MipsGOTParser<ELFT>::Entry * 2172 MipsGOTParser<ELFT>::getGotModulePointer() const { 2173 if (LocalNum < 2) 2174 return nullptr; 2175 const Entry &E = GotEntries[1]; 2176 if ((E >> (sizeof(Entry) * 8 - 1)) == 0) 2177 return nullptr; 2178 return &E; 2179 } 2180 2181 template <class ELFT> 2182 typename MipsGOTParser<ELFT>::Entries 2183 MipsGOTParser<ELFT>::getLocalEntries() const { 2184 size_t Skip = getGotModulePointer() ? 2 : 1; 2185 if (LocalNum - Skip <= 0) 2186 return Entries(); 2187 return GotEntries.slice(Skip, LocalNum - Skip); 2188 } 2189 2190 template <class ELFT> 2191 typename MipsGOTParser<ELFT>::Entries 2192 MipsGOTParser<ELFT>::getGlobalEntries() const { 2193 if (GlobalNum == 0) 2194 return Entries(); 2195 return GotEntries.slice(LocalNum, GlobalNum); 2196 } 2197 2198 template <class ELFT> 2199 typename MipsGOTParser<ELFT>::Entries 2200 MipsGOTParser<ELFT>::getOtherEntries() const { 2201 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum; 2202 if (OtherNum == 0) 2203 return Entries(); 2204 return GotEntries.slice(LocalNum + GlobalNum, OtherNum); 2205 } 2206 2207 template <class ELFT> 2208 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const { 2209 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2210 return GotSec->sh_addr + Offset; 2211 } 2212 2213 template <class ELFT> 2214 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const { 2215 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry); 2216 return Offset - 0x7ff0; 2217 } 2218 2219 template <class ELFT> 2220 const typename MipsGOTParser<ELFT>::Elf_Sym * 2221 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const { 2222 int64_t Offset = std::distance(GotEntries.data(), E); 2223 return &GotDynSyms[Offset - LocalNum]; 2224 } 2225 2226 template <class ELFT> 2227 const typename MipsGOTParser<ELFT>::Entry * 2228 MipsGOTParser<ELFT>::getPltLazyResolver() const { 2229 return PltEntries.empty() ? nullptr : &PltEntries[0]; 2230 } 2231 2232 template <class ELFT> 2233 const typename MipsGOTParser<ELFT>::Entry * 2234 MipsGOTParser<ELFT>::getPltModulePointer() const { 2235 return PltEntries.size() < 2 ? nullptr : &PltEntries[1]; 2236 } 2237 2238 template <class ELFT> 2239 typename MipsGOTParser<ELFT>::Entries 2240 MipsGOTParser<ELFT>::getPltEntries() const { 2241 if (PltEntries.size() <= 2) 2242 return Entries(); 2243 return PltEntries.slice(2, PltEntries.size() - 2); 2244 } 2245 2246 template <class ELFT> 2247 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const { 2248 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry); 2249 return PltSec->sh_addr + Offset; 2250 } 2251 2252 template <class ELFT> 2253 const typename MipsGOTParser<ELFT>::Elf_Sym * 2254 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const { 2255 int64_t Offset = std::distance(getPltEntries().data(), E); 2256 if (PltRelSec->sh_type == ELF::SHT_REL) { 2257 Elf_Rel_Range Rels = unwrapOrError(Obj->rels(PltRelSec)); 2258 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2259 } else { 2260 Elf_Rela_Range Rels = unwrapOrError(Obj->relas(PltRelSec)); 2261 return unwrapOrError(Obj->getRelocationSymbol(&Rels[Offset], PltSymTable)); 2262 } 2263 } 2264 2265 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2266 if (Obj->getHeader()->e_machine != EM_MIPS) 2267 reportError("MIPS PLT GOT is available for MIPS targets only"); 2268 2269 MipsGOTParser<ELFT> Parser(Obj, dynamic_table(), dynamic_symbols()); 2270 if (Parser.hasGot()) 2271 ELFDumperStyle->printMipsGOT(Parser); 2272 if (Parser.hasPlt()) 2273 ELFDumperStyle->printMipsPLT(Parser); 2274 } 2275 2276 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2277 {"None", Mips::AFL_EXT_NONE}, 2278 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2279 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2280 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2281 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2282 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2283 {"LSI R4010", Mips::AFL_EXT_4010}, 2284 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2285 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2286 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2287 {"MIPS R4650", Mips::AFL_EXT_4650}, 2288 {"MIPS R5900", Mips::AFL_EXT_5900}, 2289 {"MIPS R10000", Mips::AFL_EXT_10000}, 2290 {"NEC VR4100", Mips::AFL_EXT_4100}, 2291 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2292 {"NEC VR4120", Mips::AFL_EXT_4120}, 2293 {"NEC VR5400", Mips::AFL_EXT_5400}, 2294 {"NEC VR5500", Mips::AFL_EXT_5500}, 2295 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2296 {"Toshiba R3900", Mips::AFL_EXT_3900} 2297 }; 2298 2299 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2300 {"DSP", Mips::AFL_ASE_DSP}, 2301 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2302 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2303 {"MCU", Mips::AFL_ASE_MCU}, 2304 {"MDMX", Mips::AFL_ASE_MDMX}, 2305 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2306 {"MT", Mips::AFL_ASE_MT}, 2307 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2308 {"VZ", Mips::AFL_ASE_VIRT}, 2309 {"MSA", Mips::AFL_ASE_MSA}, 2310 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2311 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2312 {"XPA", Mips::AFL_ASE_XPA}, 2313 {"CRC", Mips::AFL_ASE_CRC}, 2314 {"GINV", Mips::AFL_ASE_GINV}, 2315 }; 2316 2317 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2318 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2319 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2320 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2321 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2322 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2323 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2324 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2325 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2326 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2327 Mips::Val_GNU_MIPS_ABI_FP_64A} 2328 }; 2329 2330 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2331 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2332 }; 2333 2334 static int getMipsRegisterSize(uint8_t Flag) { 2335 switch (Flag) { 2336 case Mips::AFL_REG_NONE: 2337 return 0; 2338 case Mips::AFL_REG_32: 2339 return 32; 2340 case Mips::AFL_REG_64: 2341 return 64; 2342 case Mips::AFL_REG_128: 2343 return 128; 2344 default: 2345 return -1; 2346 } 2347 } 2348 2349 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2350 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2351 if (!Shdr) { 2352 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2353 return; 2354 } 2355 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2356 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2357 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2358 return; 2359 } 2360 2361 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data()); 2362 2363 raw_ostream &OS = W.getOStream(); 2364 DictScope GS(W, "MIPS ABI Flags"); 2365 2366 W.printNumber("Version", Flags->version); 2367 W.startLine() << "ISA: "; 2368 if (Flags->isa_rev <= 1) 2369 OS << format("MIPS%u", Flags->isa_level); 2370 else 2371 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2372 OS << "\n"; 2373 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2374 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2375 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2376 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2377 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2378 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2379 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2380 W.printHex("Flags 2", Flags->flags2); 2381 } 2382 2383 template <class ELFT> 2384 static void printMipsReginfoData(ScopedPrinter &W, 2385 const Elf_Mips_RegInfo<ELFT> &Reginfo) { 2386 W.printHex("GP", Reginfo.ri_gp_value); 2387 W.printHex("General Mask", Reginfo.ri_gprmask); 2388 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]); 2389 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]); 2390 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]); 2391 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]); 2392 } 2393 2394 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2395 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2396 if (!Shdr) { 2397 W.startLine() << "There is no .reginfo section in the file.\n"; 2398 return; 2399 } 2400 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2401 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2402 W.startLine() << "The .reginfo section has a wrong size.\n"; 2403 return; 2404 } 2405 2406 DictScope GS(W, "MIPS RegInfo"); 2407 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data()); 2408 printMipsReginfoData(W, *Reginfo); 2409 } 2410 2411 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() { 2412 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.options"); 2413 if (!Shdr) { 2414 W.startLine() << "There is no .MIPS.options section in the file.\n"; 2415 return; 2416 } 2417 2418 DictScope GS(W, "MIPS Options"); 2419 2420 ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr)); 2421 while (!Sec.empty()) { 2422 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) { 2423 W.startLine() << "The .MIPS.options section has a wrong size.\n"; 2424 return; 2425 } 2426 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data()); 2427 DictScope GS(W, getElfMipsOptionsOdkType(O->kind)); 2428 switch (O->kind) { 2429 case ODK_REGINFO: 2430 printMipsReginfoData(W, O->getRegInfo()); 2431 break; 2432 default: 2433 W.startLine() << "Unsupported MIPS options tag.\n"; 2434 break; 2435 } 2436 Sec = Sec.slice(O->size); 2437 } 2438 } 2439 2440 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2441 const Elf_Shdr *StackMapSection = nullptr; 2442 for (const auto &Sec : unwrapOrError(Obj->sections())) { 2443 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2444 if (Name == ".llvm_stackmaps") { 2445 StackMapSection = &Sec; 2446 break; 2447 } 2448 } 2449 2450 if (!StackMapSection) 2451 return; 2452 2453 ArrayRef<uint8_t> StackMapContentsArray = 2454 unwrapOrError(Obj->getSectionContents(StackMapSection)); 2455 2456 prettyPrintStackMap( 2457 W, StackMapV2Parser<ELFT::TargetEndianness>(StackMapContentsArray)); 2458 } 2459 2460 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() { 2461 ELFDumperStyle->printGroupSections(Obj); 2462 } 2463 2464 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1, 2465 StringRef Str2) { 2466 OS.PadToColumn(2u); 2467 OS << Str1; 2468 OS.PadToColumn(37u); 2469 OS << Str2 << "\n"; 2470 OS.flush(); 2471 } 2472 2473 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 2474 const Elf_Ehdr *e = Obj->getHeader(); 2475 OS << "ELF Header:\n"; 2476 OS << " Magic: "; 2477 std::string Str; 2478 for (int i = 0; i < ELF::EI_NIDENT; i++) 2479 OS << format(" %02x", static_cast<int>(e->e_ident[i])); 2480 OS << "\n"; 2481 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 2482 printFields(OS, "Class:", Str); 2483 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding)); 2484 printFields(OS, "Data:", Str); 2485 OS.PadToColumn(2u); 2486 OS << "Version:"; 2487 OS.PadToColumn(37u); 2488 OS << to_hexString(e->e_ident[ELF::EI_VERSION]); 2489 if (e->e_version == ELF::EV_CURRENT) 2490 OS << " (current)"; 2491 OS << "\n"; 2492 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI)); 2493 printFields(OS, "OS/ABI:", Str); 2494 Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]); 2495 printFields(OS, "ABI Version:", Str); 2496 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType)); 2497 printFields(OS, "Type:", Str); 2498 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType)); 2499 printFields(OS, "Machine:", Str); 2500 Str = "0x" + to_hexString(e->e_version); 2501 printFields(OS, "Version:", Str); 2502 Str = "0x" + to_hexString(e->e_entry); 2503 printFields(OS, "Entry point address:", Str); 2504 Str = to_string(e->e_phoff) + " (bytes into file)"; 2505 printFields(OS, "Start of program headers:", Str); 2506 Str = to_string(e->e_shoff) + " (bytes into file)"; 2507 printFields(OS, "Start of section headers:", Str); 2508 Str = "0x" + to_hexString(e->e_flags); 2509 printFields(OS, "Flags:", Str); 2510 Str = to_string(e->e_ehsize) + " (bytes)"; 2511 printFields(OS, "Size of this header:", Str); 2512 Str = to_string(e->e_phentsize) + " (bytes)"; 2513 printFields(OS, "Size of program headers:", Str); 2514 Str = to_string(e->e_phnum); 2515 printFields(OS, "Number of program headers:", Str); 2516 Str = to_string(e->e_shentsize) + " (bytes)"; 2517 printFields(OS, "Size of section headers:", Str); 2518 Str = to_string(e->e_shnum); 2519 printFields(OS, "Number of section headers:", Str); 2520 Str = to_string(e->e_shstrndx); 2521 printFields(OS, "Section header string table index:", Str); 2522 } 2523 2524 namespace { 2525 struct GroupMember { 2526 StringRef Name; 2527 uint64_t Index; 2528 }; 2529 2530 struct GroupSection { 2531 StringRef Name; 2532 StringRef Signature; 2533 uint64_t ShName; 2534 uint64_t Index; 2535 uint32_t Link; 2536 uint32_t Info; 2537 uint32_t Type; 2538 std::vector<GroupMember> Members; 2539 }; 2540 2541 template <class ELFT> 2542 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj) { 2543 using Elf_Shdr = typename ELFT::Shdr; 2544 using Elf_Sym = typename ELFT::Sym; 2545 using Elf_Word = typename ELFT::Word; 2546 2547 std::vector<GroupSection> Ret; 2548 uint64_t I = 0; 2549 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2550 ++I; 2551 if (Sec.sh_type != ELF::SHT_GROUP) 2552 continue; 2553 2554 const Elf_Shdr *Symtab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2555 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 2556 const Elf_Sym *Sym = 2557 unwrapOrError(Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info)); 2558 auto Data = 2559 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_Word>(&Sec)); 2560 2561 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2562 StringRef Signature = StrTable.data() + Sym->st_name; 2563 Ret.push_back({Name, 2564 Signature, 2565 Sec.sh_name, 2566 I - 1, 2567 Sec.sh_link, 2568 Sec.sh_info, 2569 Data[0], 2570 {}}); 2571 2572 std::vector<GroupMember> &GM = Ret.back().Members; 2573 for (uint32_t Ndx : Data.slice(1)) { 2574 auto Sec = unwrapOrError(Obj->getSection(Ndx)); 2575 const StringRef Name = unwrapOrError(Obj->getSectionName(Sec)); 2576 GM.push_back({Name, Ndx}); 2577 } 2578 } 2579 return Ret; 2580 } 2581 2582 DenseMap<uint64_t, const GroupSection *> 2583 mapSectionsToGroups(ArrayRef<GroupSection> Groups) { 2584 DenseMap<uint64_t, const GroupSection *> Ret; 2585 for (const GroupSection &G : Groups) 2586 for (const GroupMember &GM : G.Members) 2587 Ret.insert({GM.Index, &G}); 2588 return Ret; 2589 } 2590 2591 } // namespace 2592 2593 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) { 2594 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 2595 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 2596 for (const GroupSection &G : V) { 2597 OS << "\n" 2598 << getGroupType(G.Type) << " group section [" 2599 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature 2600 << "] contains " << G.Members.size() << " sections:\n" 2601 << " [Index] Name\n"; 2602 for (const GroupMember &GM : G.Members) { 2603 const GroupSection *MainGroup = Map[GM.Index]; 2604 if (MainGroup != &G) { 2605 OS.flush(); 2606 errs() << "Error: section [" << format_decimal(GM.Index, 5) 2607 << "] in group section [" << format_decimal(G.Index, 5) 2608 << "] already in group section [" 2609 << format_decimal(MainGroup->Index, 5) << "]"; 2610 errs().flush(); 2611 continue; 2612 } 2613 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n"; 2614 } 2615 } 2616 2617 if (V.empty()) 2618 OS << "There are no section groups in this file.\n"; 2619 } 2620 2621 template <class ELFT> 2622 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab, 2623 const Elf_Rela &R, bool IsRela) { 2624 std::string Offset, Info, Addend, Value; 2625 SmallString<32> RelocName; 2626 StringRef TargetName; 2627 const Elf_Sym *Sym = nullptr; 2628 unsigned Width = ELFT::Is64Bits ? 16 : 8; 2629 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 2630 2631 // First two fields are bit width dependent. The rest of them are after are 2632 // fixed width. 2633 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 2634 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 2635 Sym = unwrapOrError(Obj->getRelocationSymbol(&R, SymTab)); 2636 if (Sym && Sym->getType() == ELF::STT_SECTION) { 2637 const Elf_Shdr *Sec = unwrapOrError( 2638 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 2639 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 2640 } else if (Sym) { 2641 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 2642 TargetName = unwrapOrError(Sym->getName(StrTable)); 2643 } 2644 2645 if (Sym && IsRela) { 2646 if (R.r_addend < 0) 2647 Addend = " - "; 2648 else 2649 Addend = " + "; 2650 } 2651 2652 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 2653 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 2654 2655 int64_t RelAddend = R.r_addend; 2656 if (IsRela) 2657 Addend += to_hexString(std::abs(RelAddend), false); 2658 2659 if (Sym) 2660 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 2661 2662 Fields[0].Str = Offset; 2663 Fields[1].Str = Info; 2664 Fields[2].Str = RelocName; 2665 Fields[3].Str = Value; 2666 Fields[4].Str = TargetName; 2667 for (auto &field : Fields) 2668 printField(field); 2669 OS << Addend; 2670 OS << "\n"; 2671 } 2672 2673 template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) { 2674 bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA; 2675 bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR; 2676 if (ELFT::Is64Bits) 2677 OS << " "; 2678 else 2679 OS << " "; 2680 if (IsRelr && opts::RawRelr) 2681 OS << "Data "; 2682 else 2683 OS << "Offset"; 2684 if (ELFT::Is64Bits) 2685 OS << " Info Type" 2686 << " Symbol's Value Symbol's Name"; 2687 else 2688 OS << " Info Type Sym. Value Symbol's Name"; 2689 if (IsRela) 2690 OS << " + Addend"; 2691 OS << "\n"; 2692 } 2693 2694 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) { 2695 bool HasRelocSections = false; 2696 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2697 if (Sec.sh_type != ELF::SHT_REL && 2698 Sec.sh_type != ELF::SHT_RELA && 2699 Sec.sh_type != ELF::SHT_RELR && 2700 Sec.sh_type != ELF::SHT_ANDROID_REL && 2701 Sec.sh_type != ELF::SHT_ANDROID_RELA && 2702 Sec.sh_type != ELF::SHT_ANDROID_RELR) 2703 continue; 2704 HasRelocSections = true; 2705 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 2706 unsigned Entries = Sec.getEntityCount(); 2707 std::vector<Elf_Rela> AndroidRelas; 2708 if (Sec.sh_type == ELF::SHT_ANDROID_REL || 2709 Sec.sh_type == ELF::SHT_ANDROID_RELA) { 2710 // Android's packed relocation section needs to be unpacked first 2711 // to get the actual number of entries. 2712 AndroidRelas = unwrapOrError(Obj->android_relas(&Sec)); 2713 Entries = AndroidRelas.size(); 2714 } 2715 std::vector<Elf_Rela> RelrRelas; 2716 if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR || 2717 Sec.sh_type == ELF::SHT_ANDROID_RELR)) { 2718 // .relr.dyn relative relocation section needs to be unpacked first 2719 // to get the actual number of entries. 2720 Elf_Relr_Range Relrs = unwrapOrError(Obj->relrs(&Sec)); 2721 RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs)); 2722 Entries = RelrRelas.size(); 2723 } 2724 uintX_t Offset = Sec.sh_offset; 2725 OS << "\nRelocation section '" << Name << "' at offset 0x" 2726 << to_hexString(Offset, false) << " contains " << Entries 2727 << " entries:\n"; 2728 printRelocHeader(Sec.sh_type); 2729 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec.sh_link)); 2730 switch (Sec.sh_type) { 2731 case ELF::SHT_REL: 2732 for (const auto &R : unwrapOrError(Obj->rels(&Sec))) { 2733 Elf_Rela Rela; 2734 Rela.r_offset = R.r_offset; 2735 Rela.r_info = R.r_info; 2736 Rela.r_addend = 0; 2737 printRelocation(Obj, SymTab, Rela, false); 2738 } 2739 break; 2740 case ELF::SHT_RELA: 2741 for (const auto &R : unwrapOrError(Obj->relas(&Sec))) 2742 printRelocation(Obj, SymTab, R, true); 2743 break; 2744 case ELF::SHT_RELR: 2745 case ELF::SHT_ANDROID_RELR: 2746 if (opts::RawRelr) 2747 for (const auto &R : unwrapOrError(Obj->relrs(&Sec))) 2748 OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) 2749 << "\n"; 2750 else 2751 for (const auto &R : RelrRelas) 2752 printRelocation(Obj, SymTab, R, false); 2753 break; 2754 case ELF::SHT_ANDROID_REL: 2755 case ELF::SHT_ANDROID_RELA: 2756 for (const auto &R : AndroidRelas) 2757 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA); 2758 break; 2759 } 2760 } 2761 if (!HasRelocSections) 2762 OS << "\nThere are no relocations in this file.\n"; 2763 } 2764 2765 std::string getSectionTypeString(unsigned Arch, unsigned Type) { 2766 using namespace ELF; 2767 2768 switch (Arch) { 2769 case EM_ARM: 2770 switch (Type) { 2771 case SHT_ARM_EXIDX: 2772 return "ARM_EXIDX"; 2773 case SHT_ARM_PREEMPTMAP: 2774 return "ARM_PREEMPTMAP"; 2775 case SHT_ARM_ATTRIBUTES: 2776 return "ARM_ATTRIBUTES"; 2777 case SHT_ARM_DEBUGOVERLAY: 2778 return "ARM_DEBUGOVERLAY"; 2779 case SHT_ARM_OVERLAYSECTION: 2780 return "ARM_OVERLAYSECTION"; 2781 } 2782 case EM_X86_64: 2783 switch (Type) { 2784 case SHT_X86_64_UNWIND: 2785 return "X86_64_UNWIND"; 2786 } 2787 case EM_MIPS: 2788 case EM_MIPS_RS3_LE: 2789 switch (Type) { 2790 case SHT_MIPS_REGINFO: 2791 return "MIPS_REGINFO"; 2792 case SHT_MIPS_OPTIONS: 2793 return "MIPS_OPTIONS"; 2794 case SHT_MIPS_ABIFLAGS: 2795 return "MIPS_ABIFLAGS"; 2796 case SHT_MIPS_DWARF: 2797 return "SHT_MIPS_DWARF"; 2798 } 2799 } 2800 switch (Type) { 2801 case SHT_NULL: 2802 return "NULL"; 2803 case SHT_PROGBITS: 2804 return "PROGBITS"; 2805 case SHT_SYMTAB: 2806 return "SYMTAB"; 2807 case SHT_STRTAB: 2808 return "STRTAB"; 2809 case SHT_RELA: 2810 return "RELA"; 2811 case SHT_HASH: 2812 return "HASH"; 2813 case SHT_DYNAMIC: 2814 return "DYNAMIC"; 2815 case SHT_NOTE: 2816 return "NOTE"; 2817 case SHT_NOBITS: 2818 return "NOBITS"; 2819 case SHT_REL: 2820 return "REL"; 2821 case SHT_SHLIB: 2822 return "SHLIB"; 2823 case SHT_DYNSYM: 2824 return "DYNSYM"; 2825 case SHT_INIT_ARRAY: 2826 return "INIT_ARRAY"; 2827 case SHT_FINI_ARRAY: 2828 return "FINI_ARRAY"; 2829 case SHT_PREINIT_ARRAY: 2830 return "PREINIT_ARRAY"; 2831 case SHT_GROUP: 2832 return "GROUP"; 2833 case SHT_SYMTAB_SHNDX: 2834 return "SYMTAB SECTION INDICES"; 2835 case SHT_RELR: 2836 case SHT_ANDROID_RELR: 2837 return "RELR"; 2838 case SHT_LLVM_ODRTAB: 2839 return "LLVM_ODRTAB"; 2840 case SHT_LLVM_LINKER_OPTIONS: 2841 return "LLVM_LINKER_OPTIONS"; 2842 case SHT_LLVM_CALL_GRAPH_PROFILE: 2843 return "LLVM_CALL_GRAPH_PROFILE"; 2844 // FIXME: Parse processor specific GNU attributes 2845 case SHT_GNU_ATTRIBUTES: 2846 return "ATTRIBUTES"; 2847 case SHT_GNU_HASH: 2848 return "GNU_HASH"; 2849 case SHT_GNU_verdef: 2850 return "VERDEF"; 2851 case SHT_GNU_verneed: 2852 return "VERNEED"; 2853 case SHT_GNU_versym: 2854 return "VERSYM"; 2855 default: 2856 return ""; 2857 } 2858 return ""; 2859 } 2860 2861 template <class ELFT> void GNUStyle<ELFT>::printSections(const ELFO *Obj) { 2862 size_t SectionIndex = 0; 2863 std::string Number, Type, Size, Address, Offset, Flags, Link, Info, EntrySize, 2864 Alignment; 2865 unsigned Bias; 2866 unsigned Width; 2867 2868 if (ELFT::Is64Bits) { 2869 Bias = 0; 2870 Width = 16; 2871 } else { 2872 Bias = 8; 2873 Width = 8; 2874 } 2875 OS << "There are " << to_string(Obj->getHeader()->e_shnum) 2876 << " section headers, starting at offset " 2877 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n"; 2878 OS << "Section Headers:\n"; 2879 Field Fields[11] = {{"[Nr]", 2}, 2880 {"Name", 7}, 2881 {"Type", 25}, 2882 {"Address", 41}, 2883 {"Off", 58 - Bias}, 2884 {"Size", 65 - Bias}, 2885 {"ES", 72 - Bias}, 2886 {"Flg", 75 - Bias}, 2887 {"Lk", 79 - Bias}, 2888 {"Inf", 82 - Bias}, 2889 {"Al", 86 - Bias}}; 2890 for (auto &f : Fields) 2891 printField(f); 2892 OS << "\n"; 2893 2894 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 2895 Number = to_string(SectionIndex); 2896 Fields[0].Str = Number; 2897 Fields[1].Str = unwrapOrError(Obj->getSectionName(&Sec)); 2898 Type = getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type); 2899 Fields[2].Str = Type; 2900 Address = to_string(format_hex_no_prefix(Sec.sh_addr, Width)); 2901 Fields[3].Str = Address; 2902 Offset = to_string(format_hex_no_prefix(Sec.sh_offset, 6)); 2903 Fields[4].Str = Offset; 2904 Size = to_string(format_hex_no_prefix(Sec.sh_size, 6)); 2905 Fields[5].Str = Size; 2906 EntrySize = to_string(format_hex_no_prefix(Sec.sh_entsize, 2)); 2907 Fields[6].Str = EntrySize; 2908 Flags = getGNUFlags(Sec.sh_flags); 2909 Fields[7].Str = Flags; 2910 Link = to_string(Sec.sh_link); 2911 Fields[8].Str = Link; 2912 Info = to_string(Sec.sh_info); 2913 Fields[9].Str = Info; 2914 Alignment = to_string(Sec.sh_addralign); 2915 Fields[10].Str = Alignment; 2916 OS.PadToColumn(Fields[0].Column); 2917 OS << "[" << right_justify(Fields[0].Str, 2) << "]"; 2918 for (int i = 1; i < 7; i++) 2919 printField(Fields[i]); 2920 OS.PadToColumn(Fields[7].Column); 2921 OS << right_justify(Fields[7].Str, 3); 2922 OS.PadToColumn(Fields[8].Column); 2923 OS << right_justify(Fields[8].Str, 2); 2924 OS.PadToColumn(Fields[9].Column); 2925 OS << right_justify(Fields[9].Str, 3); 2926 OS.PadToColumn(Fields[10].Column); 2927 OS << right_justify(Fields[10].Str, 2); 2928 OS << "\n"; 2929 ++SectionIndex; 2930 } 2931 OS << "Key to Flags:\n" 2932 << " W (write), A (alloc), X (execute), M (merge), S (strings), l " 2933 "(large)\n" 2934 << " I (info), L (link order), G (group), T (TLS), E (exclude),\ 2935 x (unknown)\n" 2936 << " O (extra OS processing required) o (OS specific),\ 2937 p (processor specific)\n"; 2938 } 2939 2940 template <class ELFT> 2941 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name, 2942 size_t Entries) { 2943 if (!Name.empty()) 2944 OS << "\nSymbol table '" << Name << "' contains " << Entries 2945 << " entries:\n"; 2946 else 2947 OS << "\n Symbol table for image:\n"; 2948 2949 if (ELFT::Is64Bits) 2950 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2951 else 2952 OS << " Num: Value Size Type Bind Vis Ndx Name\n"; 2953 } 2954 2955 template <class ELFT> 2956 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj, 2957 const Elf_Sym *Symbol, 2958 const Elf_Sym *FirstSym) { 2959 unsigned SectionIndex = Symbol->st_shndx; 2960 switch (SectionIndex) { 2961 case ELF::SHN_UNDEF: 2962 return "UND"; 2963 case ELF::SHN_ABS: 2964 return "ABS"; 2965 case ELF::SHN_COMMON: 2966 return "COM"; 2967 case ELF::SHN_XINDEX: 2968 SectionIndex = unwrapOrError(object::getExtendedSymbolTableIndex<ELFT>( 2969 Symbol, FirstSym, this->dumper()->getShndxTable())); 2970 LLVM_FALLTHROUGH; 2971 default: 2972 // Find if: 2973 // Processor specific 2974 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC) 2975 return std::string("PRC[0x") + 2976 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2977 // OS specific 2978 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS) 2979 return std::string("OS[0x") + 2980 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2981 // Architecture reserved: 2982 if (SectionIndex >= ELF::SHN_LORESERVE && 2983 SectionIndex <= ELF::SHN_HIRESERVE) 2984 return std::string("RSV[0x") + 2985 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]"; 2986 // A normal section with an index 2987 return to_string(format_decimal(SectionIndex, 3)); 2988 } 2989 } 2990 2991 template <class ELFT> 2992 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 2993 const Elf_Sym *FirstSym, StringRef StrTable, 2994 bool IsDynamic) { 2995 static int Idx = 0; 2996 static bool Dynamic = true; 2997 size_t Width; 2998 2999 // If this function was called with a different value from IsDynamic 3000 // from last call, happens when we move from dynamic to static symbol 3001 // table, "Num" field should be reset. 3002 if (!Dynamic != !IsDynamic) { 3003 Idx = 0; 3004 Dynamic = false; 3005 } 3006 std::string Num, Name, Value, Size, Binding, Type, Visibility, Section; 3007 unsigned Bias = 0; 3008 if (ELFT::Is64Bits) { 3009 Bias = 8; 3010 Width = 16; 3011 } else { 3012 Bias = 0; 3013 Width = 8; 3014 } 3015 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias, 3016 31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias}; 3017 Num = to_string(format_decimal(Idx++, 6)) + ":"; 3018 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 3019 Size = to_string(format_decimal(Symbol->st_size, 5)); 3020 unsigned char SymbolType = Symbol->getType(); 3021 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3022 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3023 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3024 else 3025 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 3026 unsigned Vis = Symbol->getVisibility(); 3027 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3028 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 3029 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 3030 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 3031 Fields[0].Str = Num; 3032 Fields[1].Str = Value; 3033 Fields[2].Str = Size; 3034 Fields[3].Str = Type; 3035 Fields[4].Str = Binding; 3036 Fields[5].Str = Visibility; 3037 Fields[6].Str = Section; 3038 Fields[7].Str = Name; 3039 for (auto &Entry : Fields) 3040 printField(Entry); 3041 OS << "\n"; 3042 } 3043 template <class ELFT> 3044 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, 3045 uint32_t Sym, StringRef StrTable, 3046 uint32_t Bucket) { 3047 std::string Num, Buc, Name, Value, Size, Binding, Type, Visibility, Section; 3048 unsigned Width, Bias = 0; 3049 if (ELFT::Is64Bits) { 3050 Bias = 8; 3051 Width = 16; 3052 } else { 3053 Bias = 0; 3054 Width = 8; 3055 } 3056 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias, 3057 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias}; 3058 Num = to_string(format_decimal(Sym, 5)); 3059 Buc = to_string(format_decimal(Bucket, 3)) + ":"; 3060 3061 const auto Symbol = FirstSym + Sym; 3062 Value = to_string(format_hex_no_prefix(Symbol->st_value, Width)); 3063 Size = to_string(format_decimal(Symbol->st_size, 5)); 3064 unsigned char SymbolType = Symbol->getType(); 3065 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 3066 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 3067 Type = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 3068 else 3069 Type = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes)); 3070 unsigned Vis = Symbol->getVisibility(); 3071 Binding = printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 3072 Visibility = printEnum(Vis, makeArrayRef(ElfSymbolVisibilities)); 3073 Section = getSymbolSectionNdx(Obj, Symbol, FirstSym); 3074 Name = this->dumper()->getFullSymbolName(Symbol, StrTable, true); 3075 Fields[0].Str = Num; 3076 Fields[1].Str = Buc; 3077 Fields[2].Str = Value; 3078 Fields[3].Str = Size; 3079 Fields[4].Str = Type; 3080 Fields[5].Str = Binding; 3081 Fields[6].Str = Visibility; 3082 Fields[7].Str = Section; 3083 Fields[8].Str = Name; 3084 for (auto &Entry : Fields) 3085 printField(Entry); 3086 OS << "\n"; 3087 } 3088 3089 template <class ELFT> void GNUStyle<ELFT>::printSymbols(const ELFO *Obj) { 3090 if (opts::DynamicSymbols) 3091 return; 3092 this->dumper()->printSymbolsHelper(true); 3093 this->dumper()->printSymbolsHelper(false); 3094 } 3095 3096 template <class ELFT> 3097 void GNUStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 3098 if (this->dumper()->getDynamicStringTable().empty()) 3099 return; 3100 auto StringTable = this->dumper()->getDynamicStringTable(); 3101 auto DynSyms = this->dumper()->dynamic_symbols(); 3102 auto GnuHash = this->dumper()->getGnuHashTable(); 3103 auto SysVHash = this->dumper()->getHashTable(); 3104 3105 // If no hash or .gnu.hash found, try using symbol table 3106 if (GnuHash == nullptr && SysVHash == nullptr) 3107 this->dumper()->printSymbolsHelper(true); 3108 3109 // Try printing .hash 3110 if (this->dumper()->getHashTable()) { 3111 OS << "\n Symbol table of .hash for image:\n"; 3112 if (ELFT::Is64Bits) 3113 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3114 else 3115 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3116 OS << "\n"; 3117 3118 uint32_t NBuckets = SysVHash->nbucket; 3119 uint32_t NChains = SysVHash->nchain; 3120 auto Buckets = SysVHash->buckets(); 3121 auto Chains = SysVHash->chains(); 3122 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 3123 if (Buckets[Buc] == ELF::STN_UNDEF) 3124 continue; 3125 for (uint32_t Ch = Buckets[Buc]; Ch < NChains; Ch = Chains[Ch]) { 3126 if (Ch == ELF::STN_UNDEF) 3127 break; 3128 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc); 3129 } 3130 } 3131 } 3132 3133 // Try printing .gnu.hash 3134 if (GnuHash) { 3135 OS << "\n Symbol table of .gnu.hash for image:\n"; 3136 if (ELFT::Is64Bits) 3137 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3138 else 3139 OS << " Num Buc: Value Size Type Bind Vis Ndx Name"; 3140 OS << "\n"; 3141 uint32_t NBuckets = GnuHash->nbuckets; 3142 auto Buckets = GnuHash->buckets(); 3143 for (uint32_t Buc = 0; Buc < NBuckets; Buc++) { 3144 if (Buckets[Buc] == ELF::STN_UNDEF) 3145 continue; 3146 uint32_t Index = Buckets[Buc]; 3147 uint32_t GnuHashable = Index - GnuHash->symndx; 3148 // Print whole chain 3149 while (true) { 3150 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc); 3151 // Chain ends at symbol with stopper bit 3152 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1) 3153 break; 3154 } 3155 } 3156 } 3157 } 3158 3159 static inline std::string printPhdrFlags(unsigned Flag) { 3160 std::string Str; 3161 Str = (Flag & PF_R) ? "R" : " "; 3162 Str += (Flag & PF_W) ? "W" : " "; 3163 Str += (Flag & PF_X) ? "E" : " "; 3164 return Str; 3165 } 3166 3167 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO 3168 // PT_TLS must only have SHF_TLS sections 3169 template <class ELFT> 3170 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr, 3171 const Elf_Shdr &Sec) { 3172 return (((Sec.sh_flags & ELF::SHF_TLS) && 3173 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) || 3174 (Phdr.p_type == ELF::PT_GNU_RELRO))) || 3175 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS)); 3176 } 3177 3178 // Non-SHT_NOBITS must have its offset inside the segment 3179 // Only non-zero section can be at end of segment 3180 template <class ELFT> 3181 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3182 if (Sec.sh_type == ELF::SHT_NOBITS) 3183 return true; 3184 bool IsSpecial = 3185 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3186 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3187 auto SectionSize = 3188 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3189 if (Sec.sh_offset >= Phdr.p_offset) 3190 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset) 3191 /*only non-zero sized sections at end*/ && 3192 (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz)); 3193 return false; 3194 } 3195 3196 // SHF_ALLOC must have VMA inside segment 3197 // Only non-zero section can be at end of segment 3198 template <class ELFT> 3199 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3200 if (!(Sec.sh_flags & ELF::SHF_ALLOC)) 3201 return true; 3202 bool IsSpecial = 3203 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0); 3204 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties 3205 auto SectionSize = 3206 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size; 3207 if (Sec.sh_addr >= Phdr.p_vaddr) 3208 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) && 3209 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz)); 3210 return false; 3211 } 3212 3213 // No section with zero size must be at start or end of PT_DYNAMIC 3214 template <class ELFT> 3215 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) { 3216 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0) 3217 return true; 3218 // Is section within the phdr both based on offset and VMA ? 3219 return ((Sec.sh_type == ELF::SHT_NOBITS) || 3220 (Sec.sh_offset > Phdr.p_offset && 3221 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) && 3222 (!(Sec.sh_flags & ELF::SHF_ALLOC) || 3223 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz)); 3224 } 3225 3226 template <class ELFT> 3227 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 3228 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3229 unsigned Width = ELFT::Is64Bits ? 18 : 10; 3230 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7; 3231 std::string Type, Offset, VMA, LMA, FileSz, MemSz, Flag, Align; 3232 3233 const Elf_Ehdr *Header = Obj->getHeader(); 3234 Field Fields[8] = {2, 17, 26, 37 + Bias, 3235 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias}; 3236 OS << "\nElf file type is " 3237 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n" 3238 << "Entry point " << format_hex(Header->e_entry, 3) << "\n" 3239 << "There are " << Header->e_phnum << " program headers," 3240 << " starting at offset " << Header->e_phoff << "\n\n" 3241 << "Program Headers:\n"; 3242 if (ELFT::Is64Bits) 3243 OS << " Type Offset VirtAddr PhysAddr " 3244 << " FileSiz MemSiz Flg Align\n"; 3245 else 3246 OS << " Type Offset VirtAddr PhysAddr FileSiz " 3247 << "MemSiz Flg Align\n"; 3248 for (const auto &Phdr : unwrapOrError(Obj->program_headers())) { 3249 Type = getElfPtType(Header->e_machine, Phdr.p_type); 3250 Offset = to_string(format_hex(Phdr.p_offset, 8)); 3251 VMA = to_string(format_hex(Phdr.p_vaddr, Width)); 3252 LMA = to_string(format_hex(Phdr.p_paddr, Width)); 3253 FileSz = to_string(format_hex(Phdr.p_filesz, SizeWidth)); 3254 MemSz = to_string(format_hex(Phdr.p_memsz, SizeWidth)); 3255 Flag = printPhdrFlags(Phdr.p_flags); 3256 Align = to_string(format_hex(Phdr.p_align, 1)); 3257 Fields[0].Str = Type; 3258 Fields[1].Str = Offset; 3259 Fields[2].Str = VMA; 3260 Fields[3].Str = LMA; 3261 Fields[4].Str = FileSz; 3262 Fields[5].Str = MemSz; 3263 Fields[6].Str = Flag; 3264 Fields[7].Str = Align; 3265 for (auto Field : Fields) 3266 printField(Field); 3267 if (Phdr.p_type == ELF::PT_INTERP) { 3268 OS << "\n [Requesting program interpreter: "; 3269 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]"; 3270 } 3271 OS << "\n"; 3272 } 3273 OS << "\n Section to Segment mapping:\n Segment Sections...\n"; 3274 int Phnum = 0; 3275 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 3276 std::string Sections; 3277 OS << format(" %2.2d ", Phnum++); 3278 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 3279 // Check if each section is in a segment and then print mapping. 3280 // readelf additionally makes sure it does not print zero sized sections 3281 // at end of segments and for PT_DYNAMIC both start and end of section 3282 // .tbss must only be shown in PT_TLS section. 3283 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) && 3284 ((Sec.sh_flags & ELF::SHF_TLS) != 0) && 3285 Phdr.p_type != ELF::PT_TLS; 3286 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) && 3287 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) && 3288 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) 3289 Sections += unwrapOrError(Obj->getSectionName(&Sec)).str() + " "; 3290 } 3291 OS << Sections << "\n"; 3292 OS.flush(); 3293 } 3294 } 3295 3296 template <class ELFT> 3297 void GNUStyle<ELFT>::printSectionAsString(const ELFO *Obj, 3298 StringRef SectionName) { 3299 char *StrPtr; 3300 long SectionIndex = strtol(SectionName.data(), &StrPtr, 10); 3301 const Elf_Shdr *Sec; 3302 if (*StrPtr) 3303 Sec = unwrapOrError(Obj->getSection(SectionName)); 3304 else 3305 Sec = unwrapOrError(Obj->getSection((unsigned int)SectionIndex)); 3306 3307 StringRef SecName = unwrapOrError(Obj->getSectionName(Sec)); 3308 OS << "String dump of section '" << SecName << "':\n"; 3309 const char *SecContent = 3310 reinterpret_cast<const char *>(Obj->base() + Sec->sh_offset); 3311 const char *CurrentWord = SecContent; 3312 const char *SecEnd = SecContent + Sec->sh_size; 3313 while (CurrentWord <= SecEnd) { 3314 size_t WordSize = strnlen(CurrentWord, SecEnd - CurrentWord); 3315 if (!WordSize) { 3316 CurrentWord++; 3317 continue; 3318 } 3319 OS << format("[%6tx]", CurrentWord - SecContent); 3320 OS << format(" %.*s\n", WordSize, CurrentWord); 3321 CurrentWord += WordSize + 1; 3322 } 3323 OS.flush(); 3324 } 3325 3326 template <class ELFT> 3327 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R, 3328 bool IsRela) { 3329 SmallString<32> RelocName; 3330 StringRef SymbolName; 3331 unsigned Width = ELFT::Is64Bits ? 16 : 8; 3332 unsigned Bias = ELFT::Is64Bits ? 8 : 0; 3333 // First two fields are bit width dependent. The rest of them are after are 3334 // fixed width. 3335 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias}; 3336 3337 uint32_t SymIndex = R.getSymbol(Obj->isMips64EL()); 3338 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 3339 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName); 3340 SymbolName = 3341 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 3342 std::string Addend, Info, Offset, Value; 3343 Offset = to_string(format_hex_no_prefix(R.r_offset, Width)); 3344 Info = to_string(format_hex_no_prefix(R.r_info, Width)); 3345 Value = to_string(format_hex_no_prefix(Sym->getValue(), Width)); 3346 int64_t RelAddend = R.r_addend; 3347 if (!SymbolName.empty() && IsRela) { 3348 if (R.r_addend < 0) 3349 Addend = " - "; 3350 else 3351 Addend = " + "; 3352 } 3353 3354 if (SymbolName.empty() && Sym->getValue() == 0) 3355 Value = ""; 3356 3357 if (IsRela) 3358 Addend += to_string(format_hex_no_prefix(std::abs(RelAddend), 1)); 3359 3360 3361 Fields[0].Str = Offset; 3362 Fields[1].Str = Info; 3363 Fields[2].Str = RelocName.c_str(); 3364 Fields[3].Str = Value; 3365 Fields[4].Str = SymbolName; 3366 for (auto &Field : Fields) 3367 printField(Field); 3368 OS << Addend; 3369 OS << "\n"; 3370 } 3371 3372 template <class ELFT> 3373 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 3374 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 3375 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 3376 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 3377 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 3378 if (DynRelaRegion.Size > 0) { 3379 OS << "\n'RELA' relocation section at offset " 3380 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) - 3381 Obj->base(), 3382 1) << " contains " << DynRelaRegion.Size << " bytes:\n"; 3383 printRelocHeader(ELF::SHT_RELA); 3384 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 3385 printDynamicRelocation(Obj, Rela, true); 3386 } 3387 if (DynRelRegion.Size > 0) { 3388 OS << "\n'REL' relocation section at offset " 3389 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) - 3390 Obj->base(), 3391 1) << " contains " << DynRelRegion.Size << " bytes:\n"; 3392 printRelocHeader(ELF::SHT_REL); 3393 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 3394 Elf_Rela Rela; 3395 Rela.r_offset = Rel.r_offset; 3396 Rela.r_info = Rel.r_info; 3397 Rela.r_addend = 0; 3398 printDynamicRelocation(Obj, Rela, false); 3399 } 3400 } 3401 if (DynRelrRegion.Size > 0) { 3402 OS << "\n'RELR' relocation section at offset " 3403 << format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) - 3404 Obj->base(), 3405 1) << " contains " << DynRelrRegion.Size << " bytes:\n"; 3406 printRelocHeader(ELF::SHT_REL); 3407 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 3408 std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs)); 3409 for (const Elf_Rela &Rela : RelrRelas) { 3410 printDynamicRelocation(Obj, Rela, false); 3411 } 3412 } 3413 if (DynPLTRelRegion.Size) { 3414 OS << "\n'PLT' relocation section at offset " 3415 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) - 3416 Obj->base(), 3417 1) << " contains " << DynPLTRelRegion.Size << " bytes:\n"; 3418 } 3419 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) { 3420 printRelocHeader(ELF::SHT_RELA); 3421 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 3422 printDynamicRelocation(Obj, Rela, true); 3423 } else { 3424 printRelocHeader(ELF::SHT_REL); 3425 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 3426 Elf_Rela Rela; 3427 Rela.r_offset = Rel.r_offset; 3428 Rela.r_info = Rel.r_info; 3429 Rela.r_addend = 0; 3430 printDynamicRelocation(Obj, Rela, false); 3431 } 3432 } 3433 } 3434 3435 // Hash histogram shows statistics of how efficient the hash was for the 3436 // dynamic symbol table. The table shows number of hash buckets for different 3437 // lengths of chains as absolute number and percentage of the total buckets. 3438 // Additionally cumulative coverage of symbols for each set of buckets. 3439 template <class ELFT> 3440 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 3441 3442 const Elf_Hash *HashTable = this->dumper()->getHashTable(); 3443 const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable(); 3444 3445 // Print histogram for .hash section 3446 if (HashTable) { 3447 size_t NBucket = HashTable->nbucket; 3448 size_t NChain = HashTable->nchain; 3449 ArrayRef<Elf_Word> Buckets = HashTable->buckets(); 3450 ArrayRef<Elf_Word> Chains = HashTable->chains(); 3451 size_t TotalSyms = 0; 3452 // If hash table is correct, we have at least chains with 0 length 3453 size_t MaxChain = 1; 3454 size_t CumulativeNonZero = 0; 3455 3456 if (NChain == 0 || NBucket == 0) 3457 return; 3458 3459 std::vector<size_t> ChainLen(NBucket, 0); 3460 // Go over all buckets and and note chain lengths of each bucket (total 3461 // unique chain lengths). 3462 for (size_t B = 0; B < NBucket; B++) { 3463 for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C]) 3464 if (MaxChain <= ++ChainLen[B]) 3465 MaxChain++; 3466 TotalSyms += ChainLen[B]; 3467 } 3468 3469 if (!TotalSyms) 3470 return; 3471 3472 std::vector<size_t> Count(MaxChain, 0) ; 3473 // Count how long is the chain for each bucket 3474 for (size_t B = 0; B < NBucket; B++) 3475 ++Count[ChainLen[B]]; 3476 // Print Number of buckets with each chain lengths and their cumulative 3477 // coverage of the symbols 3478 OS << "Histogram for bucket list length (total of " << NBucket 3479 << " buckets)\n" 3480 << " Length Number % of total Coverage\n"; 3481 for (size_t I = 0; I < MaxChain; I++) { 3482 CumulativeNonZero += Count[I] * I; 3483 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3484 (Count[I] * 100.0) / NBucket, 3485 (CumulativeNonZero * 100.0) / TotalSyms); 3486 } 3487 } 3488 3489 // Print histogram for .gnu.hash section 3490 if (GnuHashTable) { 3491 size_t NBucket = GnuHashTable->nbuckets; 3492 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets(); 3493 unsigned NumSyms = this->dumper()->dynamic_symbols().size(); 3494 if (!NumSyms) 3495 return; 3496 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms); 3497 size_t Symndx = GnuHashTable->symndx; 3498 size_t TotalSyms = 0; 3499 size_t MaxChain = 1; 3500 size_t CumulativeNonZero = 0; 3501 3502 if (Chains.empty() || NBucket == 0) 3503 return; 3504 3505 std::vector<size_t> ChainLen(NBucket, 0); 3506 3507 for (size_t B = 0; B < NBucket; B++) { 3508 if (!Buckets[B]) 3509 continue; 3510 size_t Len = 1; 3511 for (size_t C = Buckets[B] - Symndx; 3512 C < Chains.size() && (Chains[C] & 1) == 0; C++) 3513 if (MaxChain < ++Len) 3514 MaxChain++; 3515 ChainLen[B] = Len; 3516 TotalSyms += Len; 3517 } 3518 MaxChain++; 3519 3520 if (!TotalSyms) 3521 return; 3522 3523 std::vector<size_t> Count(MaxChain, 0) ; 3524 for (size_t B = 0; B < NBucket; B++) 3525 ++Count[ChainLen[B]]; 3526 // Print Number of buckets with each chain lengths and their cumulative 3527 // coverage of the symbols 3528 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket 3529 << " buckets)\n" 3530 << " Length Number % of total Coverage\n"; 3531 for (size_t I = 0; I <MaxChain; I++) { 3532 CumulativeNonZero += Count[I] * I; 3533 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I], 3534 (Count[I] * 100.0) / NBucket, 3535 (CumulativeNonZero * 100.0) / TotalSyms); 3536 } 3537 } 3538 } 3539 3540 template <class ELFT> 3541 void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 3542 OS << "GNUStyle::printCGProfile not implemented\n"; 3543 } 3544 3545 static std::string getGNUNoteTypeName(const uint32_t NT) { 3546 static const struct { 3547 uint32_t ID; 3548 const char *Name; 3549 } Notes[] = { 3550 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"}, 3551 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"}, 3552 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"}, 3553 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"}, 3554 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"}, 3555 }; 3556 3557 for (const auto &Note : Notes) 3558 if (Note.ID == NT) 3559 return std::string(Note.Name); 3560 3561 std::string string; 3562 raw_string_ostream OS(string); 3563 OS << format("Unknown note type (0x%08x)", NT); 3564 return OS.str(); 3565 } 3566 3567 static std::string getFreeBSDNoteTypeName(const uint32_t NT) { 3568 static const struct { 3569 uint32_t ID; 3570 const char *Name; 3571 } Notes[] = { 3572 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"}, 3573 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"}, 3574 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"}, 3575 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"}, 3576 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"}, 3577 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"}, 3578 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"}, 3579 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"}, 3580 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS, 3581 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"}, 3582 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"}, 3583 }; 3584 3585 for (const auto &Note : Notes) 3586 if (Note.ID == NT) 3587 return std::string(Note.Name); 3588 3589 std::string string; 3590 raw_string_ostream OS(string); 3591 OS << format("Unknown note type (0x%08x)", NT); 3592 return OS.str(); 3593 } 3594 3595 static std::string getAMDGPUNoteTypeName(const uint32_t NT) { 3596 static const struct { 3597 uint32_t ID; 3598 const char *Name; 3599 } Notes[] = { 3600 {ELF::NT_AMD_AMDGPU_HSA_METADATA, 3601 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"}, 3602 {ELF::NT_AMD_AMDGPU_ISA, 3603 "NT_AMD_AMDGPU_ISA (ISA Version)"}, 3604 {ELF::NT_AMD_AMDGPU_PAL_METADATA, 3605 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"} 3606 }; 3607 3608 for (const auto &Note : Notes) 3609 if (Note.ID == NT) 3610 return std::string(Note.Name); 3611 3612 std::string string; 3613 raw_string_ostream OS(string); 3614 OS << format("Unknown note type (0x%08x)", NT); 3615 return OS.str(); 3616 } 3617 3618 template <typename ELFT> 3619 static void printGNUProperty(raw_ostream &OS, uint32_t Type, uint32_t DataSize, 3620 ArrayRef<uint8_t> Data) { 3621 switch (Type) { 3622 default: 3623 OS << format(" <application-specific type 0x%x>\n", Type); 3624 return; 3625 case GNU_PROPERTY_STACK_SIZE: { 3626 OS << " stack size: "; 3627 if (DataSize == sizeof(typename ELFT::uint)) 3628 OS << format("0x%llx\n", 3629 (uint64_t)(*(const typename ELFT::Addr *)Data.data())); 3630 else 3631 OS << format("<corrupt length: 0x%x>\n", DataSize); 3632 break; 3633 } 3634 case GNU_PROPERTY_NO_COPY_ON_PROTECTED: 3635 OS << " no copy on protected"; 3636 if (DataSize) 3637 OS << format(" <corrupt length: 0x%x>", DataSize); 3638 OS << "\n"; 3639 break; 3640 case GNU_PROPERTY_X86_FEATURE_1_AND: 3641 OS << " X86 features: "; 3642 if (DataSize != 4 && DataSize != 8) { 3643 OS << format("<corrupt length: 0x%x>\n", DataSize); 3644 break; 3645 } 3646 uint64_t CFProtection = 3647 (DataSize == 4) 3648 ? support::endian::read32<ELFT::TargetEndianness>(Data.data()) 3649 : support::endian::read64<ELFT::TargetEndianness>(Data.data()); 3650 if (CFProtection == 0) { 3651 OS << "none\n"; 3652 break; 3653 } 3654 if (CFProtection & GNU_PROPERTY_X86_FEATURE_1_IBT) { 3655 OS << "IBT"; 3656 CFProtection &= ~GNU_PROPERTY_X86_FEATURE_1_IBT; 3657 if (CFProtection) 3658 OS << ", "; 3659 } 3660 if (CFProtection & GNU_PROPERTY_X86_FEATURE_1_SHSTK) { 3661 OS << "SHSTK"; 3662 CFProtection &= ~GNU_PROPERTY_X86_FEATURE_1_SHSTK; 3663 if (CFProtection) 3664 OS << ", "; 3665 } 3666 if (CFProtection) 3667 OS << format("<unknown flags: 0x%llx>", CFProtection); 3668 OS << "\n"; 3669 break; 3670 } 3671 } 3672 3673 template <typename ELFT> 3674 static void printGNUNote(raw_ostream &OS, uint32_t NoteType, 3675 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3676 using Elf_Word = typename ELFT::Word; 3677 3678 switch (NoteType) { 3679 default: 3680 return; 3681 case ELF::NT_GNU_ABI_TAG: { 3682 static const char *OSNames[] = { 3683 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl", 3684 }; 3685 3686 StringRef OSName = "Unknown"; 3687 if (Words[0] < array_lengthof(OSNames)) 3688 OSName = OSNames[Words[0]]; 3689 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3]; 3690 3691 if (Words.size() < 4) 3692 OS << " <corrupt GNU_ABI_TAG>"; 3693 else 3694 OS << " OS: " << OSName << ", ABI: " << Major << "." << Minor << "." 3695 << Patch; 3696 break; 3697 } 3698 case ELF::NT_GNU_BUILD_ID: { 3699 OS << " Build ID: "; 3700 ArrayRef<uint8_t> ID(reinterpret_cast<const uint8_t *>(Words.data()), Size); 3701 for (const auto &B : ID) 3702 OS << format_hex_no_prefix(B, 2); 3703 break; 3704 } 3705 case ELF::NT_GNU_GOLD_VERSION: 3706 OS << " Version: " 3707 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3708 break; 3709 case ELF::NT_GNU_PROPERTY_TYPE_0: 3710 OS << " Properties:"; 3711 3712 ArrayRef<uint8_t> Arr(reinterpret_cast<const uint8_t *>(Words.data()), 3713 Size); 3714 while (Arr.size() >= 8) { 3715 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data()); 3716 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4); 3717 Arr = Arr.drop_front(8); 3718 3719 // Take padding size into account if present. 3720 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint)); 3721 if (Arr.size() < PaddedSize) { 3722 OS << format(" <corrupt type (0x%x) datasz: 0x%x>\n", Type, 3723 DataSize); 3724 break; 3725 } 3726 printGNUProperty<ELFT>(OS, Type, DataSize, Arr.take_front(PaddedSize)); 3727 Arr = Arr.drop_front(PaddedSize); 3728 } 3729 3730 if (!Arr.empty()) 3731 OS << " <corrupted GNU_PROPERTY_TYPE_0>"; 3732 break; 3733 } 3734 OS << '\n'; 3735 } 3736 3737 template <typename ELFT> 3738 static void printAMDGPUNote(raw_ostream &OS, uint32_t NoteType, 3739 ArrayRef<typename ELFT::Word> Words, size_t Size) { 3740 switch (NoteType) { 3741 default: 3742 return; 3743 case ELF::NT_AMD_AMDGPU_HSA_METADATA: 3744 OS << " HSA Metadata:\n" 3745 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3746 break; 3747 case ELF::NT_AMD_AMDGPU_ISA: 3748 OS << " ISA Version:\n" 3749 << " " 3750 << StringRef(reinterpret_cast<const char *>(Words.data()), Size); 3751 break; 3752 case ELF::NT_AMD_AMDGPU_PAL_METADATA: 3753 const uint32_t *PALMetadataBegin = reinterpret_cast<const uint32_t *>(Words.data()); 3754 const uint32_t *PALMetadataEnd = PALMetadataBegin + Size; 3755 std::vector<uint32_t> PALMetadata(PALMetadataBegin, PALMetadataEnd); 3756 std::string PALMetadataString; 3757 auto Error = AMDGPU::PALMD::toString(PALMetadata, PALMetadataString); 3758 OS << " PAL Metadata:\n"; 3759 if (Error) { 3760 OS << " Invalid"; 3761 return; 3762 } 3763 OS << PALMetadataString; 3764 break; 3765 } 3766 OS.flush(); 3767 } 3768 3769 template <class ELFT> 3770 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 3771 const Elf_Ehdr *e = Obj->getHeader(); 3772 bool IsCore = e->e_type == ELF::ET_CORE; 3773 3774 auto PrintHeader = [&](const typename ELFT::Off Offset, 3775 const typename ELFT::Addr Size) { 3776 OS << "Displaying notes found at file offset " << format_hex(Offset, 10) 3777 << " with length " << format_hex(Size, 10) << ":\n" 3778 << " Owner Data size\tDescription\n"; 3779 }; 3780 3781 auto ProcessNote = [&](const Elf_Note &Note) { 3782 StringRef Name = Note.getName(); 3783 ArrayRef<Elf_Word> Descriptor = Note.getDesc(); 3784 Elf_Word Type = Note.getType(); 3785 3786 OS << " " << Name << std::string(22 - Name.size(), ' ') 3787 << format_hex(Descriptor.size(), 10) << '\t'; 3788 3789 if (Name == "GNU") { 3790 OS << getGNUNoteTypeName(Type) << '\n'; 3791 printGNUNote<ELFT>(OS, Type, Descriptor, Descriptor.size()); 3792 } else if (Name == "FreeBSD") { 3793 OS << getFreeBSDNoteTypeName(Type) << '\n'; 3794 } else if (Name == "AMD") { 3795 OS << getAMDGPUNoteTypeName(Type) << '\n'; 3796 printAMDGPUNote<ELFT>(OS, Type, Descriptor, Descriptor.size()); 3797 } else { 3798 OS << "Unknown note type: (" << format_hex(Type, 10) << ')'; 3799 } 3800 OS << '\n'; 3801 }; 3802 3803 if (IsCore) { 3804 for (const auto &P : unwrapOrError(Obj->program_headers())) { 3805 if (P.p_type != PT_NOTE) 3806 continue; 3807 PrintHeader(P.p_offset, P.p_filesz); 3808 Error Err = Error::success(); 3809 for (const auto &Note : Obj->notes(P, Err)) 3810 ProcessNote(Note); 3811 if (Err) 3812 error(std::move(Err)); 3813 } 3814 } else { 3815 for (const auto &S : unwrapOrError(Obj->sections())) { 3816 if (S.sh_type != SHT_NOTE) 3817 continue; 3818 PrintHeader(S.sh_offset, S.sh_size); 3819 Error Err = Error::success(); 3820 for (const auto &Note : Obj->notes(S, Err)) 3821 ProcessNote(Note); 3822 if (Err) 3823 error(std::move(Err)); 3824 } 3825 } 3826 } 3827 3828 template <class ELFT> 3829 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 3830 OS << "printELFLinkerOptions not implemented!\n"; 3831 } 3832 3833 template <class ELFT> 3834 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 3835 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3836 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3837 OS.PadToColumn(2); 3838 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3839 OS.PadToColumn(11 + Bias); 3840 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)"; 3841 OS.PadToColumn(22 + Bias); 3842 OS << format_hex_no_prefix(*E, 8 + Bias); 3843 OS.PadToColumn(31 + 2 * Bias); 3844 OS << Purpose << "\n"; 3845 }; 3846 3847 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n"); 3848 OS << " Canonical gp value: " 3849 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n"; 3850 3851 OS << " Reserved entries:\n"; 3852 OS << " Address Access Initial Purpose\n"; 3853 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver"); 3854 if (Parser.getGotModulePointer()) 3855 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)"); 3856 3857 if (!Parser.getLocalEntries().empty()) { 3858 OS << "\n"; 3859 OS << " Local entries:\n"; 3860 OS << " Address Access Initial\n"; 3861 for (auto &E : Parser.getLocalEntries()) 3862 PrintEntry(&E, ""); 3863 } 3864 3865 if (Parser.IsStatic) 3866 return; 3867 3868 if (!Parser.getGlobalEntries().empty()) { 3869 OS << "\n"; 3870 OS << " Global entries:\n"; 3871 OS << " Address Access Initial Sym.Val. Type Ndx Name\n"; 3872 for (auto &E : Parser.getGlobalEntries()) { 3873 const Elf_Sym *Sym = Parser.getGotSym(&E); 3874 std::string SymName = this->dumper()->getFullSymbolName( 3875 Sym, this->dumper()->getDynamicStringTable(), false); 3876 3877 OS.PadToColumn(2); 3878 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3879 OS.PadToColumn(11 + Bias); 3880 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)"; 3881 OS.PadToColumn(22 + Bias); 3882 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3883 OS.PadToColumn(31 + 2 * Bias); 3884 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3885 OS.PadToColumn(40 + 3 * Bias); 3886 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3887 OS.PadToColumn(48 + 3 * Bias); 3888 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3889 this->dumper()->dynamic_symbols().begin()); 3890 OS.PadToColumn(52 + 3 * Bias); 3891 OS << SymName << "\n"; 3892 } 3893 } 3894 3895 if (!Parser.getOtherEntries().empty()) 3896 OS << "\n Number of TLS and multi-GOT entries " 3897 << Parser.getOtherEntries().size() << "\n"; 3898 } 3899 3900 template <class ELFT> 3901 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 3902 size_t Bias = ELFT::Is64Bits ? 8 : 0; 3903 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) { 3904 OS.PadToColumn(2); 3905 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias); 3906 OS.PadToColumn(11 + Bias); 3907 OS << format_hex_no_prefix(*E, 8 + Bias); 3908 OS.PadToColumn(20 + 2 * Bias); 3909 OS << Purpose << "\n"; 3910 }; 3911 3912 OS << "PLT GOT:\n\n"; 3913 3914 OS << " Reserved entries:\n"; 3915 OS << " Address Initial Purpose\n"; 3916 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver"); 3917 if (Parser.getPltModulePointer()) 3918 PrintEntry(Parser.getGotModulePointer(), "Module pointer"); 3919 3920 if (!Parser.getPltEntries().empty()) { 3921 OS << "\n"; 3922 OS << " Entries:\n"; 3923 OS << " Address Initial Sym.Val. Type Ndx Name\n"; 3924 for (auto &E : Parser.getPltEntries()) { 3925 const Elf_Sym *Sym = Parser.getPltSym(&E); 3926 std::string SymName = this->dumper()->getFullSymbolName( 3927 Sym, this->dumper()->getDynamicStringTable(), false); 3928 3929 OS.PadToColumn(2); 3930 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias)); 3931 OS.PadToColumn(11 + Bias); 3932 OS << to_string(format_hex_no_prefix(E, 8 + Bias)); 3933 OS.PadToColumn(20 + 2 * Bias); 3934 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias)); 3935 OS.PadToColumn(29 + 3 * Bias); 3936 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes)); 3937 OS.PadToColumn(37 + 3 * Bias); 3938 OS << getSymbolSectionNdx(Parser.Obj, Sym, 3939 this->dumper()->dynamic_symbols().begin()); 3940 OS.PadToColumn(41 + 3 * Bias); 3941 OS << SymName << "\n"; 3942 } 3943 } 3944 } 3945 3946 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) { 3947 const Elf_Ehdr *e = Obj->getHeader(); 3948 { 3949 DictScope D(W, "ElfHeader"); 3950 { 3951 DictScope D(W, "Ident"); 3952 W.printBinary("Magic", makeArrayRef(e->e_ident).slice(ELF::EI_MAG0, 4)); 3953 W.printEnum("Class", e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass)); 3954 W.printEnum("DataEncoding", e->e_ident[ELF::EI_DATA], 3955 makeArrayRef(ElfDataEncoding)); 3956 W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]); 3957 3958 auto OSABI = makeArrayRef(ElfOSABI); 3959 if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH && 3960 e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) { 3961 switch (e->e_machine) { 3962 case ELF::EM_AMDGPU: 3963 OSABI = makeArrayRef(AMDGPUElfOSABI); 3964 break; 3965 case ELF::EM_ARM: 3966 OSABI = makeArrayRef(ARMElfOSABI); 3967 break; 3968 case ELF::EM_TI_C6000: 3969 OSABI = makeArrayRef(C6000ElfOSABI); 3970 break; 3971 } 3972 } 3973 W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI); 3974 W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]); 3975 W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD)); 3976 } 3977 3978 W.printEnum("Type", e->e_type, makeArrayRef(ElfObjectFileType)); 3979 W.printEnum("Machine", e->e_machine, makeArrayRef(ElfMachineType)); 3980 W.printNumber("Version", e->e_version); 3981 W.printHex("Entry", e->e_entry); 3982 W.printHex("ProgramHeaderOffset", e->e_phoff); 3983 W.printHex("SectionHeaderOffset", e->e_shoff); 3984 if (e->e_machine == EM_MIPS) 3985 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderMipsFlags), 3986 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 3987 unsigned(ELF::EF_MIPS_MACH)); 3988 else if (e->e_machine == EM_AMDGPU) 3989 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags), 3990 unsigned(ELF::EF_AMDGPU_MACH)); 3991 else if (e->e_machine == EM_RISCV) 3992 W.printFlags("Flags", e->e_flags, makeArrayRef(ElfHeaderRISCVFlags)); 3993 else 3994 W.printFlags("Flags", e->e_flags); 3995 W.printNumber("HeaderSize", e->e_ehsize); 3996 W.printNumber("ProgramHeaderEntrySize", e->e_phentsize); 3997 W.printNumber("ProgramHeaderCount", e->e_phnum); 3998 W.printNumber("SectionHeaderEntrySize", e->e_shentsize); 3999 W.printNumber("SectionHeaderCount", e->e_shnum); 4000 W.printNumber("StringTableSectionIndex", e->e_shstrndx); 4001 } 4002 } 4003 4004 template <class ELFT> 4005 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) { 4006 DictScope Lists(W, "Groups"); 4007 std::vector<GroupSection> V = getGroups<ELFT>(Obj); 4008 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V); 4009 for (const GroupSection &G : V) { 4010 DictScope D(W, "Group"); 4011 W.printNumber("Name", G.Name, G.ShName); 4012 W.printNumber("Index", G.Index); 4013 W.printNumber("Link", G.Link); 4014 W.printNumber("Info", G.Info); 4015 W.printHex("Type", getGroupType(G.Type), G.Type); 4016 W.startLine() << "Signature: " << G.Signature << "\n"; 4017 4018 ListScope L(W, "Section(s) in group"); 4019 for (const GroupMember &GM : G.Members) { 4020 const GroupSection *MainGroup = Map[GM.Index]; 4021 if (MainGroup != &G) { 4022 W.flush(); 4023 errs() << "Error: " << GM.Name << " (" << GM.Index 4024 << ") in a group " + G.Name + " (" << G.Index 4025 << ") is already in a group " + MainGroup->Name + " (" 4026 << MainGroup->Index << ")\n"; 4027 errs().flush(); 4028 continue; 4029 } 4030 W.startLine() << GM.Name << " (" << GM.Index << ")\n"; 4031 } 4032 } 4033 4034 if (V.empty()) 4035 W.startLine() << "There are no group sections in the file.\n"; 4036 } 4037 4038 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) { 4039 ListScope D(W, "Relocations"); 4040 4041 int SectionNumber = -1; 4042 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 4043 ++SectionNumber; 4044 4045 if (Sec.sh_type != ELF::SHT_REL && 4046 Sec.sh_type != ELF::SHT_RELA && 4047 Sec.sh_type != ELF::SHT_RELR && 4048 Sec.sh_type != ELF::SHT_ANDROID_REL && 4049 Sec.sh_type != ELF::SHT_ANDROID_RELA && 4050 Sec.sh_type != ELF::SHT_ANDROID_RELR) 4051 continue; 4052 4053 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 4054 4055 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 4056 W.indent(); 4057 4058 printRelocations(&Sec, Obj); 4059 4060 W.unindent(); 4061 W.startLine() << "}\n"; 4062 } 4063 } 4064 4065 template <class ELFT> 4066 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) { 4067 const Elf_Shdr *SymTab = unwrapOrError(Obj->getSection(Sec->sh_link)); 4068 4069 switch (Sec->sh_type) { 4070 case ELF::SHT_REL: 4071 for (const Elf_Rel &R : unwrapOrError(Obj->rels(Sec))) { 4072 Elf_Rela Rela; 4073 Rela.r_offset = R.r_offset; 4074 Rela.r_info = R.r_info; 4075 Rela.r_addend = 0; 4076 printRelocation(Obj, Rela, SymTab); 4077 } 4078 break; 4079 case ELF::SHT_RELA: 4080 for (const Elf_Rela &R : unwrapOrError(Obj->relas(Sec))) 4081 printRelocation(Obj, R, SymTab); 4082 break; 4083 case ELF::SHT_RELR: 4084 case ELF::SHT_ANDROID_RELR: { 4085 Elf_Relr_Range Relrs = unwrapOrError(Obj->relrs(Sec)); 4086 if (opts::RawRelr) { 4087 for (const Elf_Relr &R : Relrs) 4088 W.startLine() << W.hex(R) << "\n"; 4089 } else { 4090 std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs)); 4091 for (const Elf_Rela &R : RelrRelas) 4092 printRelocation(Obj, R, SymTab); 4093 } 4094 break; 4095 } 4096 case ELF::SHT_ANDROID_REL: 4097 case ELF::SHT_ANDROID_RELA: 4098 for (const Elf_Rela &R : unwrapOrError(Obj->android_relas(Sec))) 4099 printRelocation(Obj, R, SymTab); 4100 break; 4101 } 4102 } 4103 4104 template <class ELFT> 4105 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel, 4106 const Elf_Shdr *SymTab) { 4107 SmallString<32> RelocName; 4108 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 4109 StringRef TargetName; 4110 const Elf_Sym *Sym = unwrapOrError(Obj->getRelocationSymbol(&Rel, SymTab)); 4111 if (Sym && Sym->getType() == ELF::STT_SECTION) { 4112 const Elf_Shdr *Sec = unwrapOrError( 4113 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable())); 4114 TargetName = unwrapOrError(Obj->getSectionName(Sec)); 4115 } else if (Sym) { 4116 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*SymTab)); 4117 TargetName = unwrapOrError(Sym->getName(StrTable)); 4118 } 4119 4120 if (opts::ExpandRelocs) { 4121 DictScope Group(W, "Relocation"); 4122 W.printHex("Offset", Rel.r_offset); 4123 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 4124 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-", 4125 Rel.getSymbol(Obj->isMips64EL())); 4126 W.printHex("Addend", Rel.r_addend); 4127 } else { 4128 raw_ostream &OS = W.startLine(); 4129 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 4130 << (!TargetName.empty() ? TargetName : "-") << " " 4131 << W.hex(Rel.r_addend) << "\n"; 4132 } 4133 } 4134 4135 template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) { 4136 ListScope SectionsD(W, "Sections"); 4137 4138 int SectionIndex = -1; 4139 for (const Elf_Shdr &Sec : unwrapOrError(Obj->sections())) { 4140 ++SectionIndex; 4141 4142 StringRef Name = unwrapOrError(Obj->getSectionName(&Sec)); 4143 4144 DictScope SectionD(W, "Section"); 4145 W.printNumber("Index", SectionIndex); 4146 W.printNumber("Name", Name, Sec.sh_name); 4147 W.printHex( 4148 "Type", 4149 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type), 4150 Sec.sh_type); 4151 std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags), 4152 std::end(ElfSectionFlags)); 4153 switch (Obj->getHeader()->e_machine) { 4154 case EM_ARM: 4155 SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags), 4156 std::end(ElfARMSectionFlags)); 4157 break; 4158 case EM_HEXAGON: 4159 SectionFlags.insert(SectionFlags.end(), 4160 std::begin(ElfHexagonSectionFlags), 4161 std::end(ElfHexagonSectionFlags)); 4162 break; 4163 case EM_MIPS: 4164 SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags), 4165 std::end(ElfMipsSectionFlags)); 4166 break; 4167 case EM_X86_64: 4168 SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags), 4169 std::end(ElfX86_64SectionFlags)); 4170 break; 4171 case EM_XCORE: 4172 SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags), 4173 std::end(ElfXCoreSectionFlags)); 4174 break; 4175 default: 4176 // Nothing to do. 4177 break; 4178 } 4179 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags)); 4180 W.printHex("Address", Sec.sh_addr); 4181 W.printHex("Offset", Sec.sh_offset); 4182 W.printNumber("Size", Sec.sh_size); 4183 W.printNumber("Link", Sec.sh_link); 4184 W.printNumber("Info", Sec.sh_info); 4185 W.printNumber("AddressAlignment", Sec.sh_addralign); 4186 W.printNumber("EntrySize", Sec.sh_entsize); 4187 4188 if (opts::SectionRelocations) { 4189 ListScope D(W, "Relocations"); 4190 printRelocations(&Sec, Obj); 4191 } 4192 4193 if (opts::SectionSymbols) { 4194 ListScope D(W, "Symbols"); 4195 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec(); 4196 StringRef StrTable = unwrapOrError(Obj->getStringTableForSymtab(*Symtab)); 4197 4198 for (const Elf_Sym &Sym : unwrapOrError(Obj->symbols(Symtab))) { 4199 const Elf_Shdr *SymSec = unwrapOrError( 4200 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable())); 4201 if (SymSec == &Sec) 4202 printSymbol(Obj, &Sym, unwrapOrError(Obj->symbols(Symtab)).begin(), 4203 StrTable, false); 4204 } 4205 } 4206 4207 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 4208 ArrayRef<uint8_t> Data = unwrapOrError(Obj->getSectionContents(&Sec)); 4209 W.printBinaryBlock("SectionData", 4210 StringRef((const char *)Data.data(), Data.size())); 4211 } 4212 } 4213 } 4214 4215 template <class ELFT> 4216 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, 4217 const Elf_Sym *First, StringRef StrTable, 4218 bool IsDynamic) { 4219 unsigned SectionIndex = 0; 4220 StringRef SectionName; 4221 this->dumper()->getSectionNameIndex(Symbol, First, SectionName, SectionIndex); 4222 std::string FullSymbolName = 4223 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic); 4224 unsigned char SymbolType = Symbol->getType(); 4225 4226 DictScope D(W, "Symbol"); 4227 W.printNumber("Name", FullSymbolName, Symbol->st_name); 4228 W.printHex("Value", Symbol->st_value); 4229 W.printNumber("Size", Symbol->st_size); 4230 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings)); 4231 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 4232 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 4233 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 4234 else 4235 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 4236 if (Symbol->st_other == 0) 4237 // Usually st_other flag is zero. Do not pollute the output 4238 // by flags enumeration in that case. 4239 W.printNumber("Other", 0); 4240 else { 4241 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags), 4242 std::end(ElfSymOtherFlags)); 4243 if (Obj->getHeader()->e_machine == EM_MIPS) { 4244 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16 4245 // flag overlapped with other ST_MIPS_xxx flags. So consider both 4246 // cases separately. 4247 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16) 4248 SymOtherFlags.insert(SymOtherFlags.end(), 4249 std::begin(ElfMips16SymOtherFlags), 4250 std::end(ElfMips16SymOtherFlags)); 4251 else 4252 SymOtherFlags.insert(SymOtherFlags.end(), 4253 std::begin(ElfMipsSymOtherFlags), 4254 std::end(ElfMipsSymOtherFlags)); 4255 } 4256 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u); 4257 } 4258 W.printHex("Section", SectionName, SectionIndex); 4259 } 4260 4261 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) { 4262 ListScope Group(W, "Symbols"); 4263 this->dumper()->printSymbolsHelper(false); 4264 } 4265 4266 template <class ELFT> 4267 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) { 4268 ListScope Group(W, "DynamicSymbols"); 4269 this->dumper()->printSymbolsHelper(true); 4270 } 4271 4272 template <class ELFT> 4273 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) { 4274 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion(); 4275 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion(); 4276 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion(); 4277 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion(); 4278 if (DynRelRegion.Size && DynRelaRegion.Size) 4279 report_fatal_error("There are both REL and RELA dynamic relocations"); 4280 W.startLine() << "Dynamic Relocations {\n"; 4281 W.indent(); 4282 if (DynRelaRegion.Size > 0) 4283 for (const Elf_Rela &Rela : this->dumper()->dyn_relas()) 4284 printDynamicRelocation(Obj, Rela); 4285 else 4286 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) { 4287 Elf_Rela Rela; 4288 Rela.r_offset = Rel.r_offset; 4289 Rela.r_info = Rel.r_info; 4290 Rela.r_addend = 0; 4291 printDynamicRelocation(Obj, Rela); 4292 } 4293 if (DynRelrRegion.Size > 0) { 4294 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs(); 4295 std::vector<Elf_Rela> RelrRelas = unwrapOrError(Obj->decode_relrs(Relrs)); 4296 for (const Elf_Rela &Rela : RelrRelas) 4297 printDynamicRelocation(Obj, Rela); 4298 } 4299 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) 4300 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>()) 4301 printDynamicRelocation(Obj, Rela); 4302 else 4303 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) { 4304 Elf_Rela Rela; 4305 Rela.r_offset = Rel.r_offset; 4306 Rela.r_info = Rel.r_info; 4307 Rela.r_addend = 0; 4308 printDynamicRelocation(Obj, Rela); 4309 } 4310 W.unindent(); 4311 W.startLine() << "}\n"; 4312 } 4313 4314 template <class ELFT> 4315 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) { 4316 SmallString<32> RelocName; 4317 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 4318 StringRef SymbolName; 4319 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 4320 const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex; 4321 SymbolName = 4322 unwrapOrError(Sym->getName(this->dumper()->getDynamicStringTable())); 4323 if (opts::ExpandRelocs) { 4324 DictScope Group(W, "Relocation"); 4325 W.printHex("Offset", Rel.r_offset); 4326 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 4327 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-"); 4328 W.printHex("Addend", Rel.r_addend); 4329 } else { 4330 raw_ostream &OS = W.startLine(); 4331 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 4332 << (!SymbolName.empty() ? SymbolName : "-") << " " 4333 << W.hex(Rel.r_addend) << "\n"; 4334 } 4335 } 4336 4337 template <class ELFT> 4338 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) { 4339 ListScope L(W, "ProgramHeaders"); 4340 4341 for (const Elf_Phdr &Phdr : unwrapOrError(Obj->program_headers())) { 4342 DictScope P(W, "ProgramHeader"); 4343 W.printHex("Type", 4344 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 4345 Phdr.p_type); 4346 W.printHex("Offset", Phdr.p_offset); 4347 W.printHex("VirtualAddress", Phdr.p_vaddr); 4348 W.printHex("PhysicalAddress", Phdr.p_paddr); 4349 W.printNumber("FileSize", Phdr.p_filesz); 4350 W.printNumber("MemSize", Phdr.p_memsz); 4351 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 4352 W.printNumber("Alignment", Phdr.p_align); 4353 } 4354 } 4355 4356 template <class ELFT> 4357 void LLVMStyle<ELFT>::printSectionAsString(const ELFO *Obj, 4358 StringRef SectionName) { 4359 char *StrPtr; 4360 long SectionIndex = strtol(SectionName.data(), &StrPtr, 10); 4361 const Elf_Shdr *Sec; 4362 if (*StrPtr) 4363 Sec = unwrapOrError(Obj->getSection(SectionName)); 4364 else 4365 Sec = unwrapOrError(Obj->getSection((unsigned int)SectionIndex)); 4366 4367 StringRef SecName = unwrapOrError(Obj->getSectionName(Sec)); 4368 W.startLine() << "String dump of section '" << SecName << "':\n"; 4369 const char *SecContent = 4370 reinterpret_cast<const char *>(Obj->base() + Sec->sh_offset); 4371 const char *CurrentWord = SecContent; 4372 const char *SecEnd = SecContent + Sec->sh_size; 4373 while (CurrentWord <= SecEnd) { 4374 size_t WordSize = strnlen(CurrentWord, SecEnd - CurrentWord); 4375 if (!WordSize) { 4376 CurrentWord++; 4377 continue; 4378 } 4379 W.startLine() << "[" 4380 << to_string( 4381 format_hex_no_prefix((CurrentWord - SecContent), 6)) 4382 << "]"; 4383 W.startLine() << format(" %.*s\n", WordSize, CurrentWord); 4384 CurrentWord += WordSize + 1; 4385 } 4386 } 4387 4388 template <class ELFT> 4389 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) { 4390 W.startLine() << "Hash Histogram not implemented!\n"; 4391 } 4392 4393 template <class ELFT> 4394 void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) { 4395 ListScope L(W, "CGProfile"); 4396 if (!this->dumper()->getDotCGProfileSec()) 4397 return; 4398 auto CGProfile = 4399 unwrapOrError(Obj->template getSectionContentsAsArray<Elf_CGProfile>( 4400 this->dumper()->getDotCGProfileSec())); 4401 for (const Elf_CGProfile &CGPE : CGProfile) { 4402 DictScope D(W, "CGProfileEntry"); 4403 W.printNumber("From", this->dumper()->getStaticSymbolName(CGPE.cgp_from), 4404 CGPE.cgp_from); 4405 W.printNumber("To", this->dumper()->getStaticSymbolName(CGPE.cgp_to), 4406 CGPE.cgp_to); 4407 W.printNumber("Weight", CGPE.cgp_weight); 4408 } 4409 } 4410 4411 template <class ELFT> 4412 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) { 4413 W.startLine() << "printNotes not implemented!\n"; 4414 } 4415 4416 template <class ELFT> 4417 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) { 4418 ListScope L(W, "LinkerOptions"); 4419 4420 for (const Elf_Shdr &Shdr : unwrapOrError(Obj->sections())) { 4421 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS) 4422 continue; 4423 4424 ArrayRef<uint8_t> Contents = unwrapOrError(Obj->getSectionContents(&Shdr)); 4425 for (const uint8_t *P = Contents.begin(), *E = Contents.end(); P < E; ) { 4426 StringRef Key = StringRef(reinterpret_cast<const char *>(P)); 4427 StringRef Value = 4428 StringRef(reinterpret_cast<const char *>(P) + Key.size() + 1); 4429 4430 W.printString(Key, Value); 4431 4432 P = P + Key.size() + Value.size() + 2; 4433 } 4434 } 4435 } 4436 4437 template <class ELFT> 4438 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) { 4439 auto PrintEntry = [&](const Elf_Addr *E) { 4440 W.printHex("Address", Parser.getGotAddress(E)); 4441 W.printNumber("Access", Parser.getGotOffset(E)); 4442 W.printHex("Initial", *E); 4443 }; 4444 4445 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT"); 4446 4447 W.printHex("Canonical gp value", Parser.getGp()); 4448 { 4449 ListScope RS(W, "Reserved entries"); 4450 { 4451 DictScope D(W, "Entry"); 4452 PrintEntry(Parser.getGotLazyResolver()); 4453 W.printString("Purpose", StringRef("Lazy resolver")); 4454 } 4455 4456 if (Parser.getGotModulePointer()) { 4457 DictScope D(W, "Entry"); 4458 PrintEntry(Parser.getGotModulePointer()); 4459 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 4460 } 4461 } 4462 { 4463 ListScope LS(W, "Local entries"); 4464 for (auto &E : Parser.getLocalEntries()) { 4465 DictScope D(W, "Entry"); 4466 PrintEntry(&E); 4467 } 4468 } 4469 4470 if (Parser.IsStatic) 4471 return; 4472 4473 { 4474 ListScope GS(W, "Global entries"); 4475 for (auto &E : Parser.getGlobalEntries()) { 4476 DictScope D(W, "Entry"); 4477 4478 PrintEntry(&E); 4479 4480 const Elf_Sym *Sym = Parser.getGotSym(&E); 4481 W.printHex("Value", Sym->st_value); 4482 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4483 4484 unsigned SectionIndex = 0; 4485 StringRef SectionName; 4486 this->dumper()->getSectionNameIndex( 4487 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4488 SectionIndex); 4489 W.printHex("Section", SectionName, SectionIndex); 4490 4491 std::string SymName = this->dumper()->getFullSymbolName( 4492 Sym, this->dumper()->getDynamicStringTable(), true); 4493 W.printNumber("Name", SymName, Sym->st_name); 4494 } 4495 } 4496 4497 W.printNumber("Number of TLS and multi-GOT entries", 4498 uint64_t(Parser.getOtherEntries().size())); 4499 } 4500 4501 template <class ELFT> 4502 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) { 4503 auto PrintEntry = [&](const Elf_Addr *E) { 4504 W.printHex("Address", Parser.getPltAddress(E)); 4505 W.printHex("Initial", *E); 4506 }; 4507 4508 DictScope GS(W, "PLT GOT"); 4509 4510 { 4511 ListScope RS(W, "Reserved entries"); 4512 { 4513 DictScope D(W, "Entry"); 4514 PrintEntry(Parser.getPltLazyResolver()); 4515 W.printString("Purpose", StringRef("PLT lazy resolver")); 4516 } 4517 4518 if (auto E = Parser.getPltModulePointer()) { 4519 DictScope D(W, "Entry"); 4520 PrintEntry(E); 4521 W.printString("Purpose", StringRef("Module pointer")); 4522 } 4523 } 4524 { 4525 ListScope LS(W, "Entries"); 4526 for (auto &E : Parser.getPltEntries()) { 4527 DictScope D(W, "Entry"); 4528 PrintEntry(&E); 4529 4530 const Elf_Sym *Sym = Parser.getPltSym(&E); 4531 W.printHex("Value", Sym->st_value); 4532 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 4533 4534 unsigned SectionIndex = 0; 4535 StringRef SectionName; 4536 this->dumper()->getSectionNameIndex( 4537 Sym, this->dumper()->dynamic_symbols().begin(), SectionName, 4538 SectionIndex); 4539 W.printHex("Section", SectionName, SectionIndex); 4540 4541 std::string SymName = 4542 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true); 4543 W.printNumber("Name", SymName, Sym->st_name); 4544 } 4545 } 4546 } 4547