1 //===-- ELFDumper.cpp - ELF-specific dumper ---------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the ELF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "llvm-readobj.h" 16 #include "ARMAttributeParser.h" 17 #include "ARMEHABIPrinter.h" 18 #include "Error.h" 19 #include "ObjDumper.h" 20 #include "StackMapPrinter.h" 21 #include "StreamWriter.h" 22 #include "llvm/ADT/Optional.h" 23 #include "llvm/ADT/SmallString.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/Object/ELFObjectFile.h" 26 #include "llvm/Support/ARMBuildAttributes.h" 27 #include "llvm/Support/Compiler.h" 28 #include "llvm/Support/Format.h" 29 #include "llvm/Support/MathExtras.h" 30 #include "llvm/Support/MipsABIFlags.h" 31 #include "llvm/Support/raw_ostream.h" 32 33 using namespace llvm; 34 using namespace llvm::object; 35 using namespace ELF; 36 37 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \ 38 case ns::enum: return #enum; 39 40 namespace { 41 42 template<typename ELFT> 43 class ELFDumper : public ObjDumper { 44 public: 45 ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer); 46 47 void printFileHeaders() override; 48 void printSections() override; 49 void printRelocations() override; 50 void printDynamicRelocations() override; 51 void printSymbols() override; 52 void printDynamicSymbols() override; 53 void printUnwindInfo() override; 54 55 void printDynamicTable() override; 56 void printNeededLibraries() override; 57 void printProgramHeaders() override; 58 void printHashTable() override; 59 void printGnuHashTable() override; 60 void printLoadName() override; 61 void printVersionInfo() override; 62 63 void printAttributes() override; 64 void printMipsPLTGOT() override; 65 void printMipsABIFlags() override; 66 void printMipsReginfo() override; 67 68 void printStackMap() const override; 69 70 private: 71 typedef ELFFile<ELFT> ELFO; 72 typedef typename ELFO::Elf_Shdr Elf_Shdr; 73 typedef typename ELFO::Elf_Sym Elf_Sym; 74 typedef typename ELFO::Elf_Dyn Elf_Dyn; 75 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 76 typedef typename ELFO::Elf_Rel Elf_Rel; 77 typedef typename ELFO::Elf_Rela Elf_Rela; 78 typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range; 79 typedef typename ELFO::Elf_Phdr Elf_Phdr; 80 typedef typename ELFO::Elf_Half Elf_Half; 81 typedef typename ELFO::Elf_Hash Elf_Hash; 82 typedef typename ELFO::Elf_GnuHash Elf_GnuHash; 83 typedef typename ELFO::Elf_Ehdr Elf_Ehdr; 84 typedef typename ELFO::Elf_Word Elf_Word; 85 typedef typename ELFO::uintX_t uintX_t; 86 typedef typename ELFO::Elf_Versym Elf_Versym; 87 typedef typename ELFO::Elf_Verneed Elf_Verneed; 88 typedef typename ELFO::Elf_Vernaux Elf_Vernaux; 89 typedef typename ELFO::Elf_Verdef Elf_Verdef; 90 typedef typename ELFO::Elf_Verdaux Elf_Verdaux; 91 92 /// \brief Represents a region described by entries in the .dynamic table. 93 struct DynRegionInfo { 94 DynRegionInfo() : Addr(nullptr), Size(0), EntSize(0) {} 95 /// \brief Address in current address space. 96 const void *Addr; 97 /// \brief Size in bytes of the region. 98 uintX_t Size; 99 /// \brief Size of each entity in the region. 100 uintX_t EntSize; 101 }; 102 103 void printSymbolsHelper(bool IsDynamic); 104 void printSymbol(const Elf_Sym *Symbol, const Elf_Shdr *SymTab, 105 StringRef StrTable, bool IsDynamic); 106 107 void printRelocations(const Elf_Shdr *Sec); 108 void printRelocation(Elf_Rela Rel, const Elf_Shdr *SymTab); 109 void printValue(uint64_t Type, uint64_t Value); 110 111 const Elf_Rela *dyn_rela_begin() const; 112 const Elf_Rela *dyn_rela_end() const; 113 Elf_Rela_Range dyn_relas() const; 114 StringRef getDynamicString(uint64_t Offset) const; 115 const Elf_Dyn *dynamic_table_begin() const { 116 ErrorOr<const Elf_Dyn *> Ret = Obj->dynamic_table_begin(DynamicProgHeader); 117 error(Ret.getError()); 118 return *Ret; 119 } 120 const Elf_Dyn *dynamic_table_end() const { 121 ErrorOr<const Elf_Dyn *> Ret = Obj->dynamic_table_end(DynamicProgHeader); 122 error(Ret.getError()); 123 return *Ret; 124 } 125 StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb, 126 bool &IsDefault); 127 void LoadVersionMap(); 128 void LoadVersionNeeds(const Elf_Shdr *ec) const; 129 void LoadVersionDefs(const Elf_Shdr *sec) const; 130 131 const ELFO *Obj; 132 DynRegionInfo DynRelaRegion; 133 const Elf_Phdr *DynamicProgHeader = nullptr; 134 StringRef DynamicStringTable; 135 const Elf_Sym *DynSymStart = nullptr; 136 StringRef SOName; 137 const Elf_Hash *HashTable = nullptr; 138 const Elf_GnuHash *GnuHashTable = nullptr; 139 const Elf_Shdr *DotDynSymSec = nullptr; 140 const Elf_Shdr *DotSymtabSec = nullptr; 141 ArrayRef<Elf_Word> ShndxTable; 142 143 const Elf_Shdr *dot_gnu_version_sec = nullptr; // .gnu.version 144 const Elf_Shdr *dot_gnu_version_r_sec = nullptr; // .gnu.version_r 145 const Elf_Shdr *dot_gnu_version_d_sec = nullptr; // .gnu.version_d 146 147 // Records for each version index the corresponding Verdef or Vernaux entry. 148 // This is filled the first time LoadVersionMap() is called. 149 class VersionMapEntry : public PointerIntPair<const void *, 1> { 150 public: 151 // If the integer is 0, this is an Elf_Verdef*. 152 // If the integer is 1, this is an Elf_Vernaux*. 153 VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {} 154 VersionMapEntry(const Elf_Verdef *verdef) 155 : PointerIntPair<const void *, 1>(verdef, 0) {} 156 VersionMapEntry(const Elf_Vernaux *vernaux) 157 : PointerIntPair<const void *, 1>(vernaux, 1) {} 158 bool isNull() const { return getPointer() == nullptr; } 159 bool isVerdef() const { return !isNull() && getInt() == 0; } 160 bool isVernaux() const { return !isNull() && getInt() == 1; } 161 const Elf_Verdef *getVerdef() const { 162 return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr; 163 } 164 const Elf_Vernaux *getVernaux() const { 165 return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr; 166 } 167 }; 168 mutable SmallVector<VersionMapEntry, 16> VersionMap; 169 170 public: 171 Elf_Dyn_Range dynamic_table() const { 172 ErrorOr<Elf_Dyn_Range> Ret = Obj->dynamic_table(DynamicProgHeader); 173 error(Ret.getError()); 174 return *Ret; 175 } 176 177 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable, 178 bool IsDynamic); 179 const Elf_Shdr *getDotDynSymSec() const { return DotDynSymSec; } 180 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; } 181 ArrayRef<Elf_Word> getShndxTable() { return ShndxTable; } 182 }; 183 184 template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) { 185 if (!Val) { 186 error(Val.getError()); 187 return Default; 188 } 189 190 return *Val; 191 } 192 } // namespace 193 194 namespace llvm { 195 196 template <class ELFT> 197 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj, 198 StreamWriter &Writer, 199 std::unique_ptr<ObjDumper> &Result) { 200 Result.reset(new ELFDumper<ELFT>(Obj, Writer)); 201 return readobj_error::success; 202 } 203 204 std::error_code createELFDumper(const object::ObjectFile *Obj, 205 StreamWriter &Writer, 206 std::unique_ptr<ObjDumper> &Result) { 207 // Little-endian 32-bit 208 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj)) 209 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 210 211 // Big-endian 32-bit 212 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj)) 213 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 214 215 // Little-endian 64-bit 216 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj)) 217 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 218 219 // Big-endian 64-bit 220 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj)) 221 return createELFDumper(ELFObj->getELFFile(), Writer, Result); 222 223 return readobj_error::unsupported_obj_file_format; 224 } 225 226 } // namespace llvm 227 228 // Iterate through the versions needed section, and place each Elf_Vernaux 229 // in the VersionMap according to its index. 230 template <class ELFT> 231 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 232 unsigned vn_size = sec->sh_size; // Size of section in bytes 233 unsigned vn_count = sec->sh_info; // Number of Verneed entries 234 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 235 const char *sec_end = sec_start + vn_size; 236 // The first Verneed entry is at the start of the section. 237 const char *p = sec_start; 238 for (unsigned i = 0; i < vn_count; i++) { 239 if (p + sizeof(Elf_Verneed) > sec_end) 240 report_fatal_error("Section ended unexpectedly while scanning " 241 "version needed records."); 242 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 243 if (vn->vn_version != ELF::VER_NEED_CURRENT) 244 report_fatal_error("Unexpected verneed version"); 245 // Iterate through the Vernaux entries 246 const char *paux = p + vn->vn_aux; 247 for (unsigned j = 0; j < vn->vn_cnt; j++) { 248 if (paux + sizeof(Elf_Vernaux) > sec_end) 249 report_fatal_error("Section ended unexpected while scanning auxiliary " 250 "version needed records."); 251 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 252 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 253 if (index >= VersionMap.size()) 254 VersionMap.resize(index + 1); 255 VersionMap[index] = VersionMapEntry(vna); 256 paux += vna->vna_next; 257 } 258 p += vn->vn_next; 259 } 260 } 261 262 // Iterate through the version definitions, and place each Elf_Verdef 263 // in the VersionMap according to its index. 264 template <class ELFT> 265 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 266 unsigned vd_size = sec->sh_size; // Size of section in bytes 267 unsigned vd_count = sec->sh_info; // Number of Verdef entries 268 const char *sec_start = (const char *)Obj->base() + sec->sh_offset; 269 const char *sec_end = sec_start + vd_size; 270 // The first Verdef entry is at the start of the section. 271 const char *p = sec_start; 272 for (unsigned i = 0; i < vd_count; i++) { 273 if (p + sizeof(Elf_Verdef) > sec_end) 274 report_fatal_error("Section ended unexpectedly while scanning " 275 "version definitions."); 276 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 277 if (vd->vd_version != ELF::VER_DEF_CURRENT) 278 report_fatal_error("Unexpected verdef version"); 279 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 280 if (index >= VersionMap.size()) 281 VersionMap.resize(index + 1); 282 VersionMap[index] = VersionMapEntry(vd); 283 p += vd->vd_next; 284 } 285 } 286 287 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() { 288 // If there is no dynamic symtab or version table, there is nothing to do. 289 if (!DynSymStart || !dot_gnu_version_sec) 290 return; 291 292 // Has the VersionMap already been loaded? 293 if (VersionMap.size() > 0) 294 return; 295 296 // The first two version indexes are reserved. 297 // Index 0 is LOCAL, index 1 is GLOBAL. 298 VersionMap.push_back(VersionMapEntry()); 299 VersionMap.push_back(VersionMapEntry()); 300 301 if (dot_gnu_version_d_sec) 302 LoadVersionDefs(dot_gnu_version_d_sec); 303 304 if (dot_gnu_version_r_sec) 305 LoadVersionNeeds(dot_gnu_version_r_sec); 306 } 307 308 309 template <typename ELFO, class ELFT> 310 static void printVersionSymbolSection(ELFDumper<ELFT> *Dumper, 311 const ELFO *Obj, 312 const typename ELFO::Elf_Shdr *Sec, 313 StreamWriter &W) { 314 DictScope SS(W, "Version symbols"); 315 if (!Sec) 316 return; 317 StringRef Name = errorOrDefault(Obj->getSectionName(Sec)); 318 W.printNumber("Section Name", Name, Sec->sh_name); 319 W.printHex("Address", Sec->sh_addr); 320 W.printHex("Offset", Sec->sh_offset); 321 W.printNumber("Link", Sec->sh_link); 322 323 const typename ELFO::Elf_Shdr *DynSymSec = Dumper->getDotDynSymSec(); 324 const uint8_t *P = (const uint8_t *)Obj->base() + Sec->sh_offset; 325 ErrorOr<StringRef> StrTableOrErr = 326 Obj->getStringTableForSymtab(*DynSymSec); 327 error(StrTableOrErr.getError()); 328 329 // Same number of entries in the dynamic symbol table (DT_SYMTAB). 330 ListScope Syms(W, "Symbols"); 331 for (const typename ELFO::Elf_Sym &Sym : Obj->symbols(DynSymSec)) { 332 DictScope S(W, "Symbol"); 333 std::string FullSymbolName = 334 Dumper->getFullSymbolName(&Sym, *StrTableOrErr, true /* IsDynamic */); 335 W.printNumber("Version", *P); 336 W.printString("Name", FullSymbolName); 337 P += sizeof(typename ELFO::Elf_Half); 338 } 339 } 340 341 template <typename ELFO, class ELFT> 342 static void printVersionDefinitionSection(ELFDumper<ELFT> *Dumper, 343 const ELFO *Obj, 344 const typename ELFO::Elf_Shdr *Sec, 345 StreamWriter &W) { 346 DictScope SD(W, "Version definition"); 347 if (!Sec) 348 return; 349 StringRef Name = errorOrDefault(Obj->getSectionName(Sec)); 350 W.printNumber("Section Name", Name, Sec->sh_name); 351 W.printHex("Address", Sec->sh_addr); 352 W.printHex("Offset", Sec->sh_offset); 353 W.printNumber("Link", Sec->sh_link); 354 355 unsigned verdef_entries = 0; 356 // The number of entries in the section SHT_GNU_verdef 357 // is determined by DT_VERDEFNUM tag. 358 for (const typename ELFO::Elf_Dyn &Dyn : Dumper->dynamic_table()) { 359 if (Dyn.d_tag == DT_VERDEFNUM) 360 verdef_entries = Dyn.d_un.d_val; 361 } 362 const uint8_t *SecStartAddress = 363 (const uint8_t *)Obj->base() + Sec->sh_offset; 364 const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size; 365 const uint8_t *P = SecStartAddress; 366 ErrorOr<const typename ELFO::Elf_Shdr *> StrTabOrErr = 367 Obj->getSection(Sec->sh_link); 368 error(StrTabOrErr.getError()); 369 370 ListScope Entries(W, "Entries"); 371 for (unsigned i = 0; i < verdef_entries; ++i) { 372 if (P + sizeof(typename ELFO::Elf_Verdef) > SecEndAddress) 373 report_fatal_error("invalid offset in the section"); 374 auto *VD = reinterpret_cast<const typename ELFO::Elf_Verdef *>(P); 375 DictScope Entry(W, "Entry"); 376 W.printHex("Offset", (uintptr_t)P - (uintptr_t)SecStartAddress); 377 W.printNumber("Rev", VD->vd_version); 378 // FIXME: print something more readable. 379 W.printNumber("Flags", VD->vd_flags); 380 W.printNumber("Index", VD->vd_ndx); 381 W.printNumber("Cnt", VD->vd_cnt); 382 W.printString("Name", StringRef((const char *)(Obj->base() + 383 (*StrTabOrErr)->sh_offset + 384 VD->getAux()->vda_name))); 385 P += VD->vd_next; 386 } 387 } 388 389 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() { 390 // Dump version symbol section. 391 printVersionSymbolSection(this, Obj, dot_gnu_version_sec, W); 392 393 // Dump version definition section. 394 printVersionDefinitionSection(this, Obj, dot_gnu_version_d_sec, W); 395 } 396 397 template <typename ELFT> 398 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab, 399 const Elf_Sym *symb, 400 bool &IsDefault) { 401 // This is a dynamic symbol. Look in the GNU symbol version table. 402 if (!dot_gnu_version_sec) { 403 // No version table. 404 IsDefault = false; 405 return StringRef(""); 406 } 407 408 // Determine the position in the symbol table of this entry. 409 size_t entry_index = (reinterpret_cast<uintptr_t>(symb) - 410 reinterpret_cast<uintptr_t>(DynSymStart)) / 411 sizeof(Elf_Sym); 412 413 // Get the corresponding version index entry 414 const Elf_Versym *vs = 415 Obj->template getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index); 416 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 417 418 // Special markers for unversioned symbols. 419 if (version_index == ELF::VER_NDX_LOCAL || 420 version_index == ELF::VER_NDX_GLOBAL) { 421 IsDefault = false; 422 return StringRef(""); 423 } 424 425 // Lookup this symbol in the version table 426 LoadVersionMap(); 427 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 428 reportError("Invalid version entry"); 429 const VersionMapEntry &entry = VersionMap[version_index]; 430 431 // Get the version name string 432 size_t name_offset; 433 if (entry.isVerdef()) { 434 // The first Verdaux entry holds the name. 435 name_offset = entry.getVerdef()->getAux()->vda_name; 436 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 437 } else { 438 name_offset = entry.getVernaux()->vna_name; 439 IsDefault = false; 440 } 441 if (name_offset >= StrTab.size()) 442 reportError("Invalid string offset"); 443 return StringRef(StrTab.data() + name_offset); 444 } 445 446 template <typename ELFT> 447 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol, 448 StringRef StrTable, 449 bool IsDynamic) { 450 StringRef SymbolName = errorOrDefault(Symbol->getName(StrTable)); 451 if (!IsDynamic) 452 return SymbolName; 453 454 std::string FullSymbolName(SymbolName); 455 456 bool IsDefault; 457 StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault); 458 FullSymbolName += (IsDefault ? "@@" : "@"); 459 FullSymbolName += Version; 460 return FullSymbolName; 461 } 462 463 template <typename ELFO> 464 static void 465 getSectionNameIndex(const ELFO &Obj, const typename ELFO::Elf_Sym *Symbol, 466 const typename ELFO::Elf_Shdr *SymTab, 467 ArrayRef<typename ELFO::Elf_Word> ShndxTable, 468 StringRef &SectionName, unsigned &SectionIndex) { 469 SectionIndex = Symbol->st_shndx; 470 if (Symbol->isUndefined()) 471 SectionName = "Undefined"; 472 else if (Symbol->isProcessorSpecific()) 473 SectionName = "Processor Specific"; 474 else if (Symbol->isOSSpecific()) 475 SectionName = "Operating System Specific"; 476 else if (Symbol->isAbsolute()) 477 SectionName = "Absolute"; 478 else if (Symbol->isCommon()) 479 SectionName = "Common"; 480 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX) 481 SectionName = "Reserved"; 482 else { 483 if (SectionIndex == SHN_XINDEX) 484 SectionIndex = 485 Obj.getExtendedSymbolTableIndex(Symbol, SymTab, ShndxTable); 486 ErrorOr<const typename ELFO::Elf_Shdr *> Sec = Obj.getSection(SectionIndex); 487 error(Sec.getError()); 488 SectionName = errorOrDefault(Obj.getSectionName(*Sec)); 489 } 490 } 491 492 template <class ELFO> 493 static const typename ELFO::Elf_Shdr *findSectionByAddress(const ELFO *Obj, 494 uint64_t Addr) { 495 for (const auto &Shdr : Obj->sections()) 496 if (Shdr.sh_addr == Addr) 497 return &Shdr; 498 return nullptr; 499 } 500 501 template <class ELFO> 502 static const typename ELFO::Elf_Shdr *findSectionByName(const ELFO &Obj, 503 StringRef Name) { 504 for (const auto &Shdr : Obj.sections()) { 505 if (Name == errorOrDefault(Obj.getSectionName(&Shdr))) 506 return &Shdr; 507 } 508 return nullptr; 509 } 510 511 static const EnumEntry<unsigned> ElfClass[] = { 512 { "None", ELF::ELFCLASSNONE }, 513 { "32-bit", ELF::ELFCLASS32 }, 514 { "64-bit", ELF::ELFCLASS64 }, 515 }; 516 517 static const EnumEntry<unsigned> ElfDataEncoding[] = { 518 { "None", ELF::ELFDATANONE }, 519 { "LittleEndian", ELF::ELFDATA2LSB }, 520 { "BigEndian", ELF::ELFDATA2MSB }, 521 }; 522 523 static const EnumEntry<unsigned> ElfObjectFileType[] = { 524 { "None", ELF::ET_NONE }, 525 { "Relocatable", ELF::ET_REL }, 526 { "Executable", ELF::ET_EXEC }, 527 { "SharedObject", ELF::ET_DYN }, 528 { "Core", ELF::ET_CORE }, 529 }; 530 531 static const EnumEntry<unsigned> ElfOSABI[] = { 532 { "SystemV", ELF::ELFOSABI_NONE }, 533 { "HPUX", ELF::ELFOSABI_HPUX }, 534 { "NetBSD", ELF::ELFOSABI_NETBSD }, 535 { "GNU/Linux", ELF::ELFOSABI_LINUX }, 536 { "GNU/Hurd", ELF::ELFOSABI_HURD }, 537 { "Solaris", ELF::ELFOSABI_SOLARIS }, 538 { "AIX", ELF::ELFOSABI_AIX }, 539 { "IRIX", ELF::ELFOSABI_IRIX }, 540 { "FreeBSD", ELF::ELFOSABI_FREEBSD }, 541 { "TRU64", ELF::ELFOSABI_TRU64 }, 542 { "Modesto", ELF::ELFOSABI_MODESTO }, 543 { "OpenBSD", ELF::ELFOSABI_OPENBSD }, 544 { "OpenVMS", ELF::ELFOSABI_OPENVMS }, 545 { "NSK", ELF::ELFOSABI_NSK }, 546 { "AROS", ELF::ELFOSABI_AROS }, 547 { "FenixOS", ELF::ELFOSABI_FENIXOS }, 548 { "CloudABI", ELF::ELFOSABI_CLOUDABI }, 549 { "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI }, 550 { "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX }, 551 { "ARM", ELF::ELFOSABI_ARM }, 552 { "Standalone" , ELF::ELFOSABI_STANDALONE } 553 }; 554 555 static const EnumEntry<unsigned> ElfMachineType[] = { 556 LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE ), 557 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32 ), 558 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC ), 559 LLVM_READOBJ_ENUM_ENT(ELF, EM_386 ), 560 LLVM_READOBJ_ENUM_ENT(ELF, EM_68K ), 561 LLVM_READOBJ_ENUM_ENT(ELF, EM_88K ), 562 LLVM_READOBJ_ENUM_ENT(ELF, EM_IAMCU ), 563 LLVM_READOBJ_ENUM_ENT(ELF, EM_860 ), 564 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS ), 565 LLVM_READOBJ_ENUM_ENT(ELF, EM_S370 ), 566 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE ), 567 LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC ), 568 LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500 ), 569 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS ), 570 LLVM_READOBJ_ENUM_ENT(ELF, EM_960 ), 571 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC ), 572 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64 ), 573 LLVM_READOBJ_ENUM_ENT(ELF, EM_S390 ), 574 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU ), 575 LLVM_READOBJ_ENUM_ENT(ELF, EM_V800 ), 576 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20 ), 577 LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32 ), 578 LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE ), 579 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM ), 580 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA ), 581 LLVM_READOBJ_ENUM_ENT(ELF, EM_SH ), 582 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9 ), 583 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE ), 584 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC ), 585 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300 ), 586 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H ), 587 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S ), 588 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500 ), 589 LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64 ), 590 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X ), 591 LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE ), 592 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12 ), 593 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA ), 594 LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP ), 595 LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU ), 596 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1 ), 597 LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE ), 598 LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16 ), 599 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100 ), 600 LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ ), 601 LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64 ), 602 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP ), 603 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10 ), 604 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11 ), 605 LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66 ), 606 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS ), 607 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7 ), 608 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16 ), 609 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11 ), 610 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08 ), 611 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05 ), 612 LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX ), 613 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19 ), 614 LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX ), 615 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS ), 616 LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN ), 617 LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH ), 618 LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP ), 619 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX ), 620 LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY ), 621 LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM ), 622 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR ), 623 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30 ), 624 LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V ), 625 LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V ), 626 LLVM_READOBJ_ENUM_ENT(ELF, EM_V850 ), 627 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R ), 628 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300 ), 629 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200 ), 630 LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ ), 631 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC ), 632 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT ), 633 LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA ), 634 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE ), 635 LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP ), 636 LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K ), 637 LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC ), 638 LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K ), 639 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200 ), 640 LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K ), 641 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX ), 642 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR ), 643 LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16 ), 644 LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430 ), 645 LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN ), 646 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33 ), 647 LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP ), 648 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA ), 649 LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE ), 650 LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS ), 651 LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP ), 652 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ), 653 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX ), 654 LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE ), 655 LLVM_READOBJ_ENUM_ENT(ELF, EM_C166 ), 656 LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C ), 657 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F ), 658 LLVM_READOBJ_ENUM_ENT(ELF, EM_CE ), 659 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C ), 660 LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000 ), 661 LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08 ), 662 LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC ), 663 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2 ), 664 LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7 ), 665 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24 ), 666 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3 ), 667 LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32), 668 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17 ), 669 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000 ), 670 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000 ), 671 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500 ), 672 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS ), 673 LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C ), 674 LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C ), 675 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA ), 676 LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON ), 677 LLVM_READOBJ_ENUM_ENT(ELF, EM_8051 ), 678 LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X ), 679 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32 ), 680 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1 ), 681 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X ), 682 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30 ), 683 LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16 ), 684 LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK ), 685 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2 ), 686 LLVM_READOBJ_ENUM_ENT(ELF, EM_RX ), 687 LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG ), 688 LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS ), 689 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16 ), 690 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16 ), 691 LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU ), 692 LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X ), 693 LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M ), 694 LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M ), 695 LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64 ), 696 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32 ), 697 LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8 ), 698 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64 ), 699 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO ), 700 LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA ), 701 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX ), 702 LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD ), 703 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST ), 704 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND ), 705 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ), 706 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8 ), 707 LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78 ), 708 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5 ), 709 LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR ), 710 LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX ), 711 LLVM_READOBJ_ENUM_ENT(ELF, EM_AMDGPU ) 712 }; 713 714 static const EnumEntry<unsigned> ElfSymbolBindings[] = { 715 { "Local", ELF::STB_LOCAL }, 716 { "Global", ELF::STB_GLOBAL }, 717 { "Weak", ELF::STB_WEAK }, 718 { "Unique", ELF::STB_GNU_UNIQUE } 719 }; 720 721 static const EnumEntry<unsigned> ElfSymbolTypes[] = { 722 { "None", ELF::STT_NOTYPE }, 723 { "Object", ELF::STT_OBJECT }, 724 { "Function", ELF::STT_FUNC }, 725 { "Section", ELF::STT_SECTION }, 726 { "File", ELF::STT_FILE }, 727 { "Common", ELF::STT_COMMON }, 728 { "TLS", ELF::STT_TLS }, 729 { "GNU_IFunc", ELF::STT_GNU_IFUNC } 730 }; 731 732 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = { 733 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL }, 734 { "AMDGPU_HSA_INDIRECT_FUNCTION", ELF::STT_AMDGPU_HSA_INDIRECT_FUNCTION }, 735 { "AMDGPU_HSA_METADATA", ELF::STT_AMDGPU_HSA_METADATA } 736 }; 737 738 static const char *getElfSectionType(unsigned Arch, unsigned Type) { 739 switch (Arch) { 740 case ELF::EM_ARM: 741 switch (Type) { 742 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX); 743 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP); 744 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES); 745 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY); 746 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION); 747 } 748 case ELF::EM_HEXAGON: 749 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); } 750 case ELF::EM_X86_64: 751 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); } 752 case ELF::EM_MIPS: 753 case ELF::EM_MIPS_RS3_LE: 754 switch (Type) { 755 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO); 756 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS); 757 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS); 758 } 759 } 760 761 switch (Type) { 762 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL ); 763 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS ); 764 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB ); 765 LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB ); 766 LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA ); 767 LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH ); 768 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC ); 769 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE ); 770 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS ); 771 LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL ); 772 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB ); 773 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM ); 774 LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY ); 775 LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY ); 776 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY ); 777 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP ); 778 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX ); 779 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES ); 780 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH ); 781 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef ); 782 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed ); 783 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym ); 784 default: return ""; 785 } 786 } 787 788 static const EnumEntry<unsigned> ElfSectionFlags[] = { 789 LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE ), 790 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC ), 791 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE ), 792 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR ), 793 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE ), 794 LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS ), 795 LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK ), 796 LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER ), 797 LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING), 798 LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP ), 799 LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS ), 800 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION), 801 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION), 802 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP ), 803 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_GLOBAL), 804 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_READONLY), 805 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_CODE), 806 LLVM_READOBJ_ENUM_ENT(ELF, SHF_AMDGPU_HSA_AGENT) 807 }; 808 809 static const char *getElfSegmentType(unsigned Arch, unsigned Type) { 810 // Check potentially overlapped processor-specific 811 // program header type. 812 switch (Arch) { 813 case ELF::EM_AMDGPU: 814 switch (Type) { 815 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM); 816 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT); 817 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_READONLY_AGENT); 818 LLVM_READOBJ_ENUM_CASE(ELF, PT_AMDGPU_HSA_LOAD_CODE_AGENT); 819 } 820 case ELF::EM_ARM: 821 switch (Type) { 822 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); 823 } 824 case ELF::EM_MIPS: 825 case ELF::EM_MIPS_RS3_LE: 826 switch (Type) { 827 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO); 828 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC); 829 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS); 830 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS); 831 } 832 } 833 834 switch (Type) { 835 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL ); 836 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD ); 837 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC); 838 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP ); 839 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE ); 840 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB ); 841 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR ); 842 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS ); 843 844 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME); 845 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND); 846 847 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK); 848 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO); 849 default: return ""; 850 } 851 } 852 853 static const EnumEntry<unsigned> ElfSegmentFlags[] = { 854 LLVM_READOBJ_ENUM_ENT(ELF, PF_X), 855 LLVM_READOBJ_ENUM_ENT(ELF, PF_W), 856 LLVM_READOBJ_ENUM_ENT(ELF, PF_R) 857 }; 858 859 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = { 860 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER), 861 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC), 862 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC), 863 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2), 864 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE), 865 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64), 866 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008), 867 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32), 868 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64), 869 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32), 870 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64), 871 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900), 872 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010), 873 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100), 874 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650), 875 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120), 876 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111), 877 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1), 878 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON), 879 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR), 880 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2), 881 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3), 882 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400), 883 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900), 884 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500), 885 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000), 886 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E), 887 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F), 888 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A), 889 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS), 890 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16), 891 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX), 892 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1), 893 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2), 894 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3), 895 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4), 896 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5), 897 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32), 898 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64), 899 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2), 900 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2), 901 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6), 902 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6) 903 }; 904 905 template <typename ELFT> 906 ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer) 907 : ObjDumper(Writer), Obj(Obj) { 908 909 SmallVector<const Elf_Phdr *, 4> LoadSegments; 910 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 911 if (Phdr.p_type == ELF::PT_DYNAMIC) { 912 DynamicProgHeader = &Phdr; 913 continue; 914 } 915 if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0) 916 continue; 917 LoadSegments.push_back(&Phdr); 918 } 919 920 auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * { 921 const Elf_Phdr **I = std::upper_bound( 922 LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>); 923 if (I == LoadSegments.begin()) 924 report_fatal_error("Virtual address is not in any segment"); 925 --I; 926 const Elf_Phdr &Phdr = **I; 927 uint64_t Delta = VAddr - Phdr.p_vaddr; 928 if (Delta >= Phdr.p_filesz) 929 report_fatal_error("Virtual address is not in any segment"); 930 return Obj->base() + Phdr.p_offset + Delta; 931 }; 932 933 uint64_t SONameOffset = 0; 934 const char *StringTableBegin = nullptr; 935 uint64_t StringTableSize = 0; 936 for (const Elf_Dyn &Dyn : dynamic_table()) { 937 switch (Dyn.d_tag) { 938 case ELF::DT_HASH: 939 HashTable = 940 reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr())); 941 break; 942 case ELF::DT_GNU_HASH: 943 GnuHashTable = 944 reinterpret_cast<const Elf_GnuHash *>(toMappedAddr(Dyn.getPtr())); 945 break; 946 case ELF::DT_RELA: 947 DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr()); 948 break; 949 case ELF::DT_RELASZ: 950 DynRelaRegion.Size = Dyn.getVal(); 951 break; 952 case ELF::DT_RELAENT: 953 DynRelaRegion.EntSize = Dyn.getVal(); 954 break; 955 case ELF::DT_SONAME: 956 SONameOffset = Dyn.getVal(); 957 break; 958 case ELF::DT_STRTAB: 959 StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr()); 960 break; 961 case ELF::DT_STRSZ: 962 StringTableSize = Dyn.getVal(); 963 break; 964 case ELF::DT_SYMTAB: 965 DynSymStart = 966 reinterpret_cast<const Elf_Sym *>(toMappedAddr(Dyn.getPtr())); 967 break; 968 } 969 } 970 if (StringTableBegin) 971 DynamicStringTable = StringRef(StringTableBegin, StringTableSize); 972 if (SONameOffset) 973 SOName = getDynamicString(SONameOffset); 974 975 for (const Elf_Shdr &Sec : Obj->sections()) { 976 switch (Sec.sh_type) { 977 case ELF::SHT_GNU_versym: 978 if (dot_gnu_version_sec != nullptr) 979 reportError("Multiple SHT_GNU_versym"); 980 dot_gnu_version_sec = &Sec; 981 break; 982 case ELF::SHT_GNU_verdef: 983 if (dot_gnu_version_d_sec != nullptr) 984 reportError("Multiple SHT_GNU_verdef"); 985 dot_gnu_version_d_sec = &Sec; 986 break; 987 case ELF::SHT_GNU_verneed: 988 if (dot_gnu_version_r_sec != nullptr) 989 reportError("Multilpe SHT_GNU_verneed"); 990 dot_gnu_version_r_sec = &Sec; 991 break; 992 case ELF::SHT_DYNSYM: 993 if (DotDynSymSec != nullptr) 994 reportError("Multilpe SHT_DYNSYM"); 995 DotDynSymSec = &Sec; 996 break; 997 case ELF::SHT_SYMTAB: 998 if (DotSymtabSec != nullptr) 999 reportError("Multilpe SHT_SYMTAB"); 1000 DotSymtabSec = &Sec; 1001 break; 1002 case ELF::SHT_SYMTAB_SHNDX: { 1003 ErrorOr<ArrayRef<Elf_Word>> TableOrErr = Obj->getSHNDXTable(Sec); 1004 error(TableOrErr.getError()); 1005 ShndxTable = *TableOrErr; 1006 break; 1007 } 1008 } 1009 } 1010 } 1011 1012 template <typename ELFT> 1013 const typename ELFDumper<ELFT>::Elf_Rela * 1014 ELFDumper<ELFT>::dyn_rela_begin() const { 1015 if (DynRelaRegion.Size && DynRelaRegion.EntSize != sizeof(Elf_Rela)) 1016 report_fatal_error("Invalid relocation entry size"); 1017 return reinterpret_cast<const Elf_Rela *>(DynRelaRegion.Addr); 1018 } 1019 1020 template <typename ELFT> 1021 const typename ELFDumper<ELFT>::Elf_Rela * 1022 ELFDumper<ELFT>::dyn_rela_end() const { 1023 uint64_t Size = DynRelaRegion.Size; 1024 if (Size % sizeof(Elf_Rela)) 1025 report_fatal_error("Invalid relocation table size"); 1026 return dyn_rela_begin() + Size / sizeof(Elf_Rela); 1027 } 1028 1029 template <typename ELFT> 1030 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const { 1031 return make_range(dyn_rela_begin(), dyn_rela_end()); 1032 } 1033 1034 template<class ELFT> 1035 void ELFDumper<ELFT>::printFileHeaders() { 1036 const Elf_Ehdr *Header = Obj->getHeader(); 1037 1038 { 1039 DictScope D(W, "ElfHeader"); 1040 { 1041 DictScope D(W, "Ident"); 1042 W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0, 1043 4)); 1044 W.printEnum ("Class", Header->e_ident[ELF::EI_CLASS], 1045 makeArrayRef(ElfClass)); 1046 W.printEnum ("DataEncoding", Header->e_ident[ELF::EI_DATA], 1047 makeArrayRef(ElfDataEncoding)); 1048 W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]); 1049 1050 // Handle architecture specific OS/ABI values. 1051 if (Header->e_machine == ELF::EM_AMDGPU && 1052 Header->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA) 1053 W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA); 1054 else 1055 W.printEnum ("OS/ABI", Header->e_ident[ELF::EI_OSABI], 1056 makeArrayRef(ElfOSABI)); 1057 W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]); 1058 W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD)); 1059 } 1060 1061 W.printEnum ("Type", Header->e_type, makeArrayRef(ElfObjectFileType)); 1062 W.printEnum ("Machine", Header->e_machine, makeArrayRef(ElfMachineType)); 1063 W.printNumber("Version", Header->e_version); 1064 W.printHex ("Entry", Header->e_entry); 1065 W.printHex ("ProgramHeaderOffset", Header->e_phoff); 1066 W.printHex ("SectionHeaderOffset", Header->e_shoff); 1067 if (Header->e_machine == EM_MIPS) 1068 W.printFlags("Flags", Header->e_flags, makeArrayRef(ElfHeaderMipsFlags), 1069 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI), 1070 unsigned(ELF::EF_MIPS_MACH)); 1071 else 1072 W.printFlags("Flags", Header->e_flags); 1073 W.printNumber("HeaderSize", Header->e_ehsize); 1074 W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize); 1075 W.printNumber("ProgramHeaderCount", Header->e_phnum); 1076 W.printNumber("SectionHeaderEntrySize", Header->e_shentsize); 1077 W.printNumber("SectionHeaderCount", Header->e_shnum); 1078 W.printNumber("StringTableSectionIndex", Header->e_shstrndx); 1079 } 1080 } 1081 1082 template<class ELFT> 1083 void ELFDumper<ELFT>::printSections() { 1084 ListScope SectionsD(W, "Sections"); 1085 1086 int SectionIndex = -1; 1087 for (const Elf_Shdr &Sec : Obj->sections()) { 1088 ++SectionIndex; 1089 1090 StringRef Name = errorOrDefault(Obj->getSectionName(&Sec)); 1091 1092 DictScope SectionD(W, "Section"); 1093 W.printNumber("Index", SectionIndex); 1094 W.printNumber("Name", Name, Sec.sh_name); 1095 W.printHex("Type", 1096 getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type), 1097 Sec.sh_type); 1098 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(ElfSectionFlags)); 1099 W.printHex("Address", Sec.sh_addr); 1100 W.printHex("Offset", Sec.sh_offset); 1101 W.printNumber("Size", Sec.sh_size); 1102 W.printNumber("Link", Sec.sh_link); 1103 W.printNumber("Info", Sec.sh_info); 1104 W.printNumber("AddressAlignment", Sec.sh_addralign); 1105 W.printNumber("EntrySize", Sec.sh_entsize); 1106 1107 if (opts::SectionRelocations) { 1108 ListScope D(W, "Relocations"); 1109 printRelocations(&Sec); 1110 } 1111 1112 if (opts::SectionSymbols) { 1113 ListScope D(W, "Symbols"); 1114 const Elf_Shdr *Symtab = DotSymtabSec; 1115 ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*Symtab); 1116 error(StrTableOrErr.getError()); 1117 StringRef StrTable = *StrTableOrErr; 1118 1119 for (const Elf_Sym &Sym : Obj->symbols(Symtab)) { 1120 ErrorOr<const Elf_Shdr *> SymSec = 1121 Obj->getSection(&Sym, Symtab, ShndxTable); 1122 if (!SymSec) 1123 continue; 1124 if (*SymSec == &Sec) 1125 printSymbol(&Sym, Symtab, StrTable, false); 1126 } 1127 } 1128 1129 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) { 1130 ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(&Sec)); 1131 W.printBinaryBlock("SectionData", 1132 StringRef((const char *)Data.data(), Data.size())); 1133 } 1134 } 1135 } 1136 1137 template<class ELFT> 1138 void ELFDumper<ELFT>::printRelocations() { 1139 ListScope D(W, "Relocations"); 1140 1141 int SectionNumber = -1; 1142 for (const Elf_Shdr &Sec : Obj->sections()) { 1143 ++SectionNumber; 1144 1145 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA) 1146 continue; 1147 1148 StringRef Name = errorOrDefault(Obj->getSectionName(&Sec)); 1149 1150 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 1151 W.indent(); 1152 1153 printRelocations(&Sec); 1154 1155 W.unindent(); 1156 W.startLine() << "}\n"; 1157 } 1158 } 1159 1160 template<class ELFT> 1161 void ELFDumper<ELFT>::printDynamicRelocations() { 1162 W.startLine() << "Dynamic Relocations {\n"; 1163 W.indent(); 1164 for (const Elf_Rela &Rel : dyn_relas()) { 1165 SmallString<32> RelocName; 1166 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 1167 StringRef SymbolName; 1168 uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL()); 1169 const Elf_Sym *Sym = DynSymStart + SymIndex; 1170 SymbolName = errorOrDefault(Sym->getName(DynamicStringTable)); 1171 if (opts::ExpandRelocs) { 1172 DictScope Group(W, "Relocation"); 1173 W.printHex("Offset", Rel.r_offset); 1174 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 1175 W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-"); 1176 W.printHex("Addend", Rel.r_addend); 1177 } 1178 else { 1179 raw_ostream& OS = W.startLine(); 1180 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 1181 << (SymbolName.size() > 0 ? SymbolName : "-") << " " 1182 << W.hex(Rel.r_addend) << "\n"; 1183 } 1184 } 1185 W.unindent(); 1186 W.startLine() << "}\n"; 1187 } 1188 1189 template <class ELFT> 1190 void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) { 1191 ErrorOr<const Elf_Shdr *> SymTabOrErr = Obj->getSection(Sec->sh_link); 1192 error(SymTabOrErr.getError()); 1193 const Elf_Shdr *SymTab = *SymTabOrErr; 1194 1195 switch (Sec->sh_type) { 1196 case ELF::SHT_REL: 1197 for (const Elf_Rel &R : Obj->rels(Sec)) { 1198 Elf_Rela Rela; 1199 Rela.r_offset = R.r_offset; 1200 Rela.r_info = R.r_info; 1201 Rela.r_addend = 0; 1202 printRelocation(Rela, SymTab); 1203 } 1204 break; 1205 case ELF::SHT_RELA: 1206 for (const Elf_Rela &R : Obj->relas(Sec)) 1207 printRelocation(R, SymTab); 1208 break; 1209 } 1210 } 1211 1212 template <class ELFT> 1213 void ELFDumper<ELFT>::printRelocation(Elf_Rela Rel, const Elf_Shdr *SymTab) { 1214 SmallString<32> RelocName; 1215 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName); 1216 StringRef TargetName; 1217 const Elf_Sym *Sym = Obj->getRelocationSymbol(&Rel, SymTab); 1218 if (Sym && Sym->getType() == ELF::STT_SECTION) { 1219 ErrorOr<const Elf_Shdr *> Sec = Obj->getSection(Sym, SymTab, ShndxTable); 1220 error(Sec.getError()); 1221 ErrorOr<StringRef> SecName = Obj->getSectionName(*Sec); 1222 if (SecName) 1223 TargetName = SecName.get(); 1224 } else if (Sym) { 1225 ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*SymTab); 1226 error(StrTableOrErr.getError()); 1227 TargetName = errorOrDefault(Sym->getName(*StrTableOrErr)); 1228 } 1229 1230 if (opts::ExpandRelocs) { 1231 DictScope Group(W, "Relocation"); 1232 W.printHex("Offset", Rel.r_offset); 1233 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL())); 1234 W.printNumber("Symbol", TargetName.size() > 0 ? TargetName : "-", 1235 Rel.getSymbol(Obj->isMips64EL())); 1236 W.printHex("Addend", Rel.r_addend); 1237 } else { 1238 raw_ostream& OS = W.startLine(); 1239 OS << W.hex(Rel.r_offset) << " " << RelocName << " " 1240 << (TargetName.size() > 0 ? TargetName : "-") << " " 1241 << W.hex(Rel.r_addend) << "\n"; 1242 } 1243 } 1244 1245 template<class ELFT> 1246 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) { 1247 const Elf_Shdr *Symtab = (IsDynamic) ? DotDynSymSec : DotSymtabSec; 1248 if (!Symtab) 1249 return; 1250 ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*Symtab); 1251 error(StrTableOrErr.getError()); 1252 StringRef StrTable = *StrTableOrErr; 1253 for (const Elf_Sym &Sym : Obj->symbols(Symtab)) 1254 printSymbol(&Sym, Symtab, StrTable, IsDynamic); 1255 } 1256 1257 template<class ELFT> 1258 void ELFDumper<ELFT>::printSymbols() { 1259 ListScope Group(W, "Symbols"); 1260 printSymbolsHelper(false); 1261 } 1262 1263 template<class ELFT> 1264 void ELFDumper<ELFT>::printDynamicSymbols() { 1265 ListScope Group(W, "DynamicSymbols"); 1266 printSymbolsHelper(true); 1267 } 1268 1269 template <class ELFT> 1270 void ELFDumper<ELFT>::printSymbol(const Elf_Sym *Symbol, const Elf_Shdr *SymTab, 1271 StringRef StrTable, bool IsDynamic) { 1272 unsigned SectionIndex = 0; 1273 StringRef SectionName; 1274 getSectionNameIndex(*Obj, Symbol, SymTab, ShndxTable, SectionName, 1275 SectionIndex); 1276 std::string FullSymbolName = getFullSymbolName(Symbol, StrTable, IsDynamic); 1277 unsigned char SymbolType = Symbol->getType(); 1278 1279 DictScope D(W, "Symbol"); 1280 W.printNumber("Name", FullSymbolName, Symbol->st_name); 1281 W.printHex ("Value", Symbol->st_value); 1282 W.printNumber("Size", Symbol->st_size); 1283 W.printEnum ("Binding", Symbol->getBinding(), 1284 makeArrayRef(ElfSymbolBindings)); 1285 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU && 1286 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS) 1287 W.printEnum ("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes)); 1288 else 1289 W.printEnum ("Type", SymbolType, makeArrayRef(ElfSymbolTypes)); 1290 W.printNumber("Other", Symbol->st_other); 1291 W.printHex("Section", SectionName, SectionIndex); 1292 } 1293 1294 #define LLVM_READOBJ_TYPE_CASE(name) \ 1295 case DT_##name: return #name 1296 1297 static const char *getTypeString(uint64_t Type) { 1298 switch (Type) { 1299 LLVM_READOBJ_TYPE_CASE(BIND_NOW); 1300 LLVM_READOBJ_TYPE_CASE(DEBUG); 1301 LLVM_READOBJ_TYPE_CASE(FINI); 1302 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY); 1303 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ); 1304 LLVM_READOBJ_TYPE_CASE(FLAGS); 1305 LLVM_READOBJ_TYPE_CASE(FLAGS_1); 1306 LLVM_READOBJ_TYPE_CASE(HASH); 1307 LLVM_READOBJ_TYPE_CASE(INIT); 1308 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY); 1309 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ); 1310 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY); 1311 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ); 1312 LLVM_READOBJ_TYPE_CASE(JMPREL); 1313 LLVM_READOBJ_TYPE_CASE(NEEDED); 1314 LLVM_READOBJ_TYPE_CASE(NULL); 1315 LLVM_READOBJ_TYPE_CASE(PLTGOT); 1316 LLVM_READOBJ_TYPE_CASE(PLTREL); 1317 LLVM_READOBJ_TYPE_CASE(PLTRELSZ); 1318 LLVM_READOBJ_TYPE_CASE(REL); 1319 LLVM_READOBJ_TYPE_CASE(RELA); 1320 LLVM_READOBJ_TYPE_CASE(RELENT); 1321 LLVM_READOBJ_TYPE_CASE(RELSZ); 1322 LLVM_READOBJ_TYPE_CASE(RELAENT); 1323 LLVM_READOBJ_TYPE_CASE(RELASZ); 1324 LLVM_READOBJ_TYPE_CASE(RPATH); 1325 LLVM_READOBJ_TYPE_CASE(RUNPATH); 1326 LLVM_READOBJ_TYPE_CASE(SONAME); 1327 LLVM_READOBJ_TYPE_CASE(STRSZ); 1328 LLVM_READOBJ_TYPE_CASE(STRTAB); 1329 LLVM_READOBJ_TYPE_CASE(SYMBOLIC); 1330 LLVM_READOBJ_TYPE_CASE(SYMENT); 1331 LLVM_READOBJ_TYPE_CASE(SYMTAB); 1332 LLVM_READOBJ_TYPE_CASE(TEXTREL); 1333 LLVM_READOBJ_TYPE_CASE(VERDEF); 1334 LLVM_READOBJ_TYPE_CASE(VERDEFNUM); 1335 LLVM_READOBJ_TYPE_CASE(VERNEED); 1336 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM); 1337 LLVM_READOBJ_TYPE_CASE(VERSYM); 1338 LLVM_READOBJ_TYPE_CASE(RELCOUNT); 1339 LLVM_READOBJ_TYPE_CASE(GNU_HASH); 1340 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION); 1341 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP_REL); 1342 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS); 1343 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS); 1344 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO); 1345 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO); 1346 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO); 1347 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM); 1348 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP); 1349 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT); 1350 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS); 1351 default: return "unknown"; 1352 } 1353 } 1354 1355 #undef LLVM_READOBJ_TYPE_CASE 1356 1357 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \ 1358 { #enum, prefix##_##enum } 1359 1360 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = { 1361 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN), 1362 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC), 1363 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL), 1364 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW), 1365 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS) 1366 }; 1367 1368 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = { 1369 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW), 1370 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL), 1371 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP), 1372 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE), 1373 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR), 1374 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST), 1375 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN), 1376 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN), 1377 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT), 1378 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS), 1379 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE), 1380 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB), 1381 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP), 1382 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT), 1383 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE), 1384 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE), 1385 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT), 1386 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF), 1387 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS), 1388 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR), 1389 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED), 1390 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC), 1391 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE), 1392 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT), 1393 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON) 1394 }; 1395 1396 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = { 1397 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE), 1398 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART), 1399 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT), 1400 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT), 1401 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE), 1402 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY), 1403 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT), 1404 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS), 1405 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT), 1406 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE), 1407 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD), 1408 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART), 1409 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED), 1410 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD), 1411 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF), 1412 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE) 1413 }; 1414 1415 #undef LLVM_READOBJ_DT_FLAG_ENT 1416 1417 template <typename T, typename TFlag> 1418 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) { 1419 typedef EnumEntry<TFlag> FlagEntry; 1420 typedef SmallVector<FlagEntry, 10> FlagVector; 1421 FlagVector SetFlags; 1422 1423 for (const auto &Flag : Flags) { 1424 if (Flag.Value == 0) 1425 continue; 1426 1427 if ((Value & Flag.Value) == Flag.Value) 1428 SetFlags.push_back(Flag); 1429 } 1430 1431 for (const auto &Flag : SetFlags) { 1432 OS << Flag.Name << " "; 1433 } 1434 } 1435 1436 template <class ELFT> 1437 StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const { 1438 if (Value >= DynamicStringTable.size()) 1439 reportError("Invalid dynamic string table reference"); 1440 return StringRef(DynamicStringTable.data() + Value); 1441 } 1442 1443 template <class ELFT> 1444 void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) { 1445 raw_ostream &OS = W.getOStream(); 1446 switch (Type) { 1447 case DT_PLTREL: 1448 if (Value == DT_REL) { 1449 OS << "REL"; 1450 break; 1451 } else if (Value == DT_RELA) { 1452 OS << "RELA"; 1453 break; 1454 } 1455 // Fallthrough. 1456 case DT_PLTGOT: 1457 case DT_HASH: 1458 case DT_STRTAB: 1459 case DT_SYMTAB: 1460 case DT_RELA: 1461 case DT_INIT: 1462 case DT_FINI: 1463 case DT_REL: 1464 case DT_JMPREL: 1465 case DT_INIT_ARRAY: 1466 case DT_FINI_ARRAY: 1467 case DT_PREINIT_ARRAY: 1468 case DT_DEBUG: 1469 case DT_VERDEF: 1470 case DT_VERNEED: 1471 case DT_VERSYM: 1472 case DT_GNU_HASH: 1473 case DT_NULL: 1474 case DT_MIPS_BASE_ADDRESS: 1475 case DT_MIPS_GOTSYM: 1476 case DT_MIPS_RLD_MAP: 1477 case DT_MIPS_RLD_MAP_REL: 1478 case DT_MIPS_PLTGOT: 1479 case DT_MIPS_OPTIONS: 1480 OS << format("0x%" PRIX64, Value); 1481 break; 1482 case DT_RELCOUNT: 1483 case DT_VERDEFNUM: 1484 case DT_VERNEEDNUM: 1485 case DT_MIPS_RLD_VERSION: 1486 case DT_MIPS_LOCAL_GOTNO: 1487 case DT_MIPS_SYMTABNO: 1488 case DT_MIPS_UNREFEXTNO: 1489 OS << Value; 1490 break; 1491 case DT_PLTRELSZ: 1492 case DT_RELASZ: 1493 case DT_RELAENT: 1494 case DT_STRSZ: 1495 case DT_SYMENT: 1496 case DT_RELSZ: 1497 case DT_RELENT: 1498 case DT_INIT_ARRAYSZ: 1499 case DT_FINI_ARRAYSZ: 1500 case DT_PREINIT_ARRAYSZ: 1501 OS << Value << " (bytes)"; 1502 break; 1503 case DT_NEEDED: 1504 OS << "SharedLibrary (" << getDynamicString(Value) << ")"; 1505 break; 1506 case DT_SONAME: 1507 OS << "LibrarySoname (" << getDynamicString(Value) << ")"; 1508 break; 1509 case DT_RPATH: 1510 case DT_RUNPATH: 1511 OS << getDynamicString(Value); 1512 break; 1513 case DT_MIPS_FLAGS: 1514 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS); 1515 break; 1516 case DT_FLAGS: 1517 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS); 1518 break; 1519 case DT_FLAGS_1: 1520 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS); 1521 break; 1522 default: 1523 OS << format("0x%" PRIX64, Value); 1524 break; 1525 } 1526 } 1527 1528 template<class ELFT> 1529 void ELFDumper<ELFT>::printUnwindInfo() { 1530 W.startLine() << "UnwindInfo not implemented.\n"; 1531 } 1532 1533 namespace { 1534 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() { 1535 const unsigned Machine = Obj->getHeader()->e_machine; 1536 if (Machine == EM_ARM) { 1537 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx( 1538 W, Obj, DotSymtabSec); 1539 return Ctx.PrintUnwindInformation(); 1540 } 1541 W.startLine() << "UnwindInfo not implemented.\n"; 1542 } 1543 } 1544 1545 template<class ELFT> 1546 void ELFDumper<ELFT>::printDynamicTable() { 1547 auto I = dynamic_table_begin(); 1548 auto E = dynamic_table_end(); 1549 1550 if (I == E) 1551 return; 1552 1553 --E; 1554 while (I != E && E->getTag() == ELF::DT_NULL) 1555 --E; 1556 if (E->getTag() != ELF::DT_NULL) 1557 ++E; 1558 ++E; 1559 1560 ptrdiff_t Total = std::distance(I, E); 1561 if (Total == 0) 1562 return; 1563 1564 raw_ostream &OS = W.getOStream(); 1565 W.startLine() << "DynamicSection [ (" << Total << " entries)\n"; 1566 1567 bool Is64 = ELFT::Is64Bits; 1568 1569 W.startLine() 1570 << " Tag" << (Is64 ? " " : " ") << "Type" 1571 << " " << "Name/Value\n"; 1572 while (I != E) { 1573 const Elf_Dyn &Entry = *I; 1574 uintX_t Tag = Entry.getTag(); 1575 ++I; 1576 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, true) << " " 1577 << format("%-21s", getTypeString(Tag)); 1578 printValue(Tag, Entry.getVal()); 1579 OS << "\n"; 1580 } 1581 1582 W.startLine() << "]\n"; 1583 } 1584 1585 template<class ELFT> 1586 void ELFDumper<ELFT>::printNeededLibraries() { 1587 ListScope D(W, "NeededLibraries"); 1588 1589 typedef std::vector<StringRef> LibsTy; 1590 LibsTy Libs; 1591 1592 for (const auto &Entry : dynamic_table()) 1593 if (Entry.d_tag == ELF::DT_NEEDED) 1594 Libs.push_back(getDynamicString(Entry.d_un.d_val)); 1595 1596 std::stable_sort(Libs.begin(), Libs.end()); 1597 1598 for (const auto &L : Libs) { 1599 outs() << " " << L << "\n"; 1600 } 1601 } 1602 1603 template<class ELFT> 1604 void ELFDumper<ELFT>::printProgramHeaders() { 1605 ListScope L(W, "ProgramHeaders"); 1606 1607 for (const Elf_Phdr &Phdr : Obj->program_headers()) { 1608 DictScope P(W, "ProgramHeader"); 1609 W.printHex("Type", 1610 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type), 1611 Phdr.p_type); 1612 W.printHex("Offset", Phdr.p_offset); 1613 W.printHex("VirtualAddress", Phdr.p_vaddr); 1614 W.printHex("PhysicalAddress", Phdr.p_paddr); 1615 W.printNumber("FileSize", Phdr.p_filesz); 1616 W.printNumber("MemSize", Phdr.p_memsz); 1617 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags)); 1618 W.printNumber("Alignment", Phdr.p_align); 1619 } 1620 } 1621 1622 template <typename ELFT> 1623 void ELFDumper<ELFT>::printHashTable() { 1624 DictScope D(W, "HashTable"); 1625 if (!HashTable) 1626 return; 1627 W.printNumber("Num Buckets", HashTable->nbucket); 1628 W.printNumber("Num Chains", HashTable->nchain); 1629 W.printList("Buckets", HashTable->buckets()); 1630 W.printList("Chains", HashTable->chains()); 1631 } 1632 1633 template <typename ELFT> 1634 void ELFDumper<ELFT>::printGnuHashTable() { 1635 DictScope D(W, "GnuHashTable"); 1636 if (!GnuHashTable) 1637 return; 1638 W.printNumber("Num Buckets", GnuHashTable->nbuckets); 1639 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx); 1640 W.printNumber("Num Mask Words", GnuHashTable->maskwords); 1641 W.printNumber("Shift Count", GnuHashTable->shift2); 1642 W.printHexList("Bloom Filter", GnuHashTable->filter()); 1643 W.printList("Buckets", GnuHashTable->buckets()); 1644 if (!DotDynSymSec) 1645 reportError("No dynamic symbol section"); 1646 W.printHexList("Values", 1647 GnuHashTable->values(DotDynSymSec->getEntityCount())); 1648 } 1649 1650 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() { 1651 outs() << "LoadName: " << SOName << '\n'; 1652 } 1653 1654 template <class ELFT> 1655 void ELFDumper<ELFT>::printAttributes() { 1656 W.startLine() << "Attributes not implemented.\n"; 1657 } 1658 1659 namespace { 1660 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() { 1661 if (Obj->getHeader()->e_machine != EM_ARM) { 1662 W.startLine() << "Attributes not implemented.\n"; 1663 return; 1664 } 1665 1666 DictScope BA(W, "BuildAttributes"); 1667 for (const ELFO::Elf_Shdr &Sec : Obj->sections()) { 1668 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES) 1669 continue; 1670 1671 ErrorOr<ArrayRef<uint8_t>> Contents = Obj->getSectionContents(&Sec); 1672 if (!Contents) 1673 continue; 1674 1675 if ((*Contents)[0] != ARMBuildAttrs::Format_Version) { 1676 errs() << "unrecognised FormatVersion: 0x" << utohexstr((*Contents)[0]) 1677 << '\n'; 1678 continue; 1679 } 1680 1681 W.printHex("FormatVersion", (*Contents)[0]); 1682 if (Contents->size() == 1) 1683 continue; 1684 1685 ARMAttributeParser(W).Parse(*Contents); 1686 } 1687 } 1688 } 1689 1690 namespace { 1691 template <class ELFT> class MipsGOTParser { 1692 public: 1693 typedef object::ELFFile<ELFT> ELFO; 1694 typedef typename ELFO::Elf_Shdr Elf_Shdr; 1695 typedef typename ELFO::Elf_Sym Elf_Sym; 1696 typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range; 1697 typedef typename ELFO::Elf_Addr GOTEntry; 1698 typedef typename ELFO::Elf_Rel Elf_Rel; 1699 typedef typename ELFO::Elf_Rela Elf_Rela; 1700 1701 MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1702 Elf_Dyn_Range DynTable, StreamWriter &W); 1703 1704 void parseGOT(); 1705 void parsePLT(); 1706 1707 private: 1708 ELFDumper<ELFT> *Dumper; 1709 const ELFO *Obj; 1710 StreamWriter &W; 1711 llvm::Optional<uint64_t> DtPltGot; 1712 llvm::Optional<uint64_t> DtLocalGotNum; 1713 llvm::Optional<uint64_t> DtGotSym; 1714 llvm::Optional<uint64_t> DtMipsPltGot; 1715 llvm::Optional<uint64_t> DtJmpRel; 1716 1717 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const; 1718 const GOTEntry *makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum); 1719 1720 void printGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1721 const GOTEntry *It); 1722 void printGlobalGotEntry(uint64_t GotAddr, const GOTEntry *BeginIt, 1723 const GOTEntry *It, const Elf_Sym *Sym, 1724 StringRef StrTable, bool IsDynamic); 1725 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1726 const GOTEntry *It, StringRef Purpose); 1727 void printPLTEntry(uint64_t PLTAddr, const GOTEntry *BeginIt, 1728 const GOTEntry *It, StringRef StrTable, 1729 const Elf_Sym *Sym); 1730 }; 1731 } 1732 1733 template <class ELFT> 1734 MipsGOTParser<ELFT>::MipsGOTParser(ELFDumper<ELFT> *Dumper, const ELFO *Obj, 1735 Elf_Dyn_Range DynTable, StreamWriter &W) 1736 : Dumper(Dumper), Obj(Obj), W(W) { 1737 for (const auto &Entry : DynTable) { 1738 switch (Entry.getTag()) { 1739 case ELF::DT_PLTGOT: 1740 DtPltGot = Entry.getVal(); 1741 break; 1742 case ELF::DT_MIPS_LOCAL_GOTNO: 1743 DtLocalGotNum = Entry.getVal(); 1744 break; 1745 case ELF::DT_MIPS_GOTSYM: 1746 DtGotSym = Entry.getVal(); 1747 break; 1748 case ELF::DT_MIPS_PLTGOT: 1749 DtMipsPltGot = Entry.getVal(); 1750 break; 1751 case ELF::DT_JMPREL: 1752 DtJmpRel = Entry.getVal(); 1753 break; 1754 } 1755 } 1756 } 1757 1758 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() { 1759 // See "Global Offset Table" in Chapter 5 in the following document 1760 // for detailed GOT description. 1761 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf 1762 if (!DtPltGot) { 1763 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n"; 1764 return; 1765 } 1766 if (!DtLocalGotNum) { 1767 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n"; 1768 return; 1769 } 1770 if (!DtGotSym) { 1771 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n"; 1772 return; 1773 } 1774 1775 const Elf_Shdr *GOTShdr = findSectionByAddress(Obj, *DtPltGot); 1776 if (!GOTShdr) { 1777 W.startLine() << "There is no .got section in the file.\n"; 1778 return; 1779 } 1780 1781 ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(GOTShdr); 1782 if (!GOT) { 1783 W.startLine() << "The .got section is empty.\n"; 1784 return; 1785 } 1786 1787 if (*DtLocalGotNum > getGOTTotal(*GOT)) { 1788 W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n"; 1789 return; 1790 } 1791 1792 const Elf_Shdr *DynSymSec = Dumper->getDotDynSymSec(); 1793 ErrorOr<StringRef> StrTable = Obj->getStringTableForSymtab(*DynSymSec); 1794 error(StrTable.getError()); 1795 const Elf_Sym *DynSymBegin = Obj->symbol_begin(DynSymSec); 1796 const Elf_Sym *DynSymEnd = Obj->symbol_end(DynSymSec); 1797 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd)); 1798 1799 if (*DtGotSym > DynSymTotal) { 1800 W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n"; 1801 return; 1802 } 1803 1804 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym; 1805 1806 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) { 1807 W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n"; 1808 return; 1809 } 1810 1811 const GOTEntry *GotBegin = makeGOTIter(*GOT, 0); 1812 const GOTEntry *GotLocalEnd = makeGOTIter(*GOT, *DtLocalGotNum); 1813 const GOTEntry *It = GotBegin; 1814 1815 DictScope GS(W, "Primary GOT"); 1816 1817 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0); 1818 { 1819 ListScope RS(W, "Reserved entries"); 1820 1821 { 1822 DictScope D(W, "Entry"); 1823 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1824 W.printString("Purpose", StringRef("Lazy resolver")); 1825 } 1826 1827 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) { 1828 DictScope D(W, "Entry"); 1829 printGotEntry(GOTShdr->sh_addr, GotBegin, It++); 1830 W.printString("Purpose", StringRef("Module pointer (GNU extension)")); 1831 } 1832 } 1833 { 1834 ListScope LS(W, "Local entries"); 1835 for (; It != GotLocalEnd; ++It) { 1836 DictScope D(W, "Entry"); 1837 printGotEntry(GOTShdr->sh_addr, GotBegin, It); 1838 } 1839 } 1840 { 1841 ListScope GS(W, "Global entries"); 1842 1843 const GOTEntry *GotGlobalEnd = 1844 makeGOTIter(*GOT, *DtLocalGotNum + GlobalGotNum); 1845 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym; 1846 for (; It != GotGlobalEnd; ++It) { 1847 DictScope D(W, "Entry"); 1848 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, 1849 *StrTable, true); 1850 } 1851 } 1852 1853 std::size_t SpecGotNum = getGOTTotal(*GOT) - *DtLocalGotNum - GlobalGotNum; 1854 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum)); 1855 } 1856 1857 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() { 1858 if (!DtMipsPltGot) { 1859 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n"; 1860 return; 1861 } 1862 if (!DtJmpRel) { 1863 W.startLine() << "Cannot find JMPREL dynamic table tag.\n"; 1864 return; 1865 } 1866 1867 const Elf_Shdr *PLTShdr = findSectionByAddress(Obj, *DtMipsPltGot); 1868 if (!PLTShdr) { 1869 W.startLine() << "There is no .got.plt section in the file.\n"; 1870 return; 1871 } 1872 ErrorOr<ArrayRef<uint8_t>> PLT = Obj->getSectionContents(PLTShdr); 1873 if (!PLT) { 1874 W.startLine() << "The .got.plt section is empty.\n"; 1875 return; 1876 } 1877 1878 const Elf_Shdr *PLTRelShdr = findSectionByAddress(Obj, *DtJmpRel); 1879 if (!PLTShdr) { 1880 W.startLine() << "There is no .rel.plt section in the file.\n"; 1881 return; 1882 } 1883 ErrorOr<const Elf_Shdr *> SymTableOrErr = 1884 Obj->getSection(PLTRelShdr->sh_link); 1885 error(SymTableOrErr.getError()); 1886 const Elf_Shdr *SymTable = *SymTableOrErr; 1887 ErrorOr<StringRef> StrTable = Obj->getStringTableForSymtab(*SymTable); 1888 error(StrTable.getError()); 1889 1890 const GOTEntry *PLTBegin = makeGOTIter(*PLT, 0); 1891 const GOTEntry *PLTEnd = makeGOTIter(*PLT, getGOTTotal(*PLT)); 1892 const GOTEntry *It = PLTBegin; 1893 1894 DictScope GS(W, "PLT GOT"); 1895 { 1896 ListScope RS(W, "Reserved entries"); 1897 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver"); 1898 if (It != PLTEnd) 1899 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer"); 1900 } 1901 { 1902 ListScope GS(W, "Entries"); 1903 1904 switch (PLTRelShdr->sh_type) { 1905 case ELF::SHT_REL: 1906 for (const Elf_Rel *RI = Obj->rel_begin(PLTRelShdr), 1907 *RE = Obj->rel_end(PLTRelShdr); 1908 RI != RE && It != PLTEnd; ++RI, ++It) { 1909 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 1910 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym); 1911 } 1912 break; 1913 case ELF::SHT_RELA: 1914 for (const Elf_Rela *RI = Obj->rela_begin(PLTRelShdr), 1915 *RE = Obj->rela_end(PLTRelShdr); 1916 RI != RE && It != PLTEnd; ++RI, ++It) { 1917 const Elf_Sym *Sym = Obj->getRelocationSymbol(&*RI, SymTable); 1918 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym); 1919 } 1920 break; 1921 } 1922 } 1923 } 1924 1925 template <class ELFT> 1926 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const { 1927 return GOT.size() / sizeof(GOTEntry); 1928 } 1929 1930 template <class ELFT> 1931 const typename MipsGOTParser<ELFT>::GOTEntry * 1932 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) { 1933 const char *Data = reinterpret_cast<const char *>(GOT.data()); 1934 return reinterpret_cast<const GOTEntry *>(Data + EntryNum * sizeof(GOTEntry)); 1935 } 1936 1937 template <class ELFT> 1938 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, 1939 const GOTEntry *BeginIt, 1940 const GOTEntry *It) { 1941 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 1942 W.printHex("Address", GotAddr + Offset); 1943 W.printNumber("Access", Offset - 0x7ff0); 1944 W.printHex("Initial", *It); 1945 } 1946 1947 template <class ELFT> 1948 void MipsGOTParser<ELFT>::printGlobalGotEntry( 1949 uint64_t GotAddr, const GOTEntry *BeginIt, const GOTEntry *It, 1950 const Elf_Sym *Sym, StringRef StrTable, bool IsDynamic) { 1951 printGotEntry(GotAddr, BeginIt, It); 1952 1953 W.printHex("Value", Sym->st_value); 1954 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 1955 1956 unsigned SectionIndex = 0; 1957 StringRef SectionName; 1958 getSectionNameIndex(*Obj, Sym, Dumper->getDotDynSymSec(), 1959 Dumper->getShndxTable(), SectionName, SectionIndex); 1960 W.printHex("Section", SectionName, SectionIndex); 1961 1962 std::string FullSymbolName = 1963 Dumper->getFullSymbolName(Sym, StrTable, IsDynamic); 1964 W.printNumber("Name", FullSymbolName, Sym->st_name); 1965 } 1966 1967 template <class ELFT> 1968 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 1969 const GOTEntry *BeginIt, 1970 const GOTEntry *It, StringRef Purpose) { 1971 DictScope D(W, "Entry"); 1972 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 1973 W.printHex("Address", PLTAddr + Offset); 1974 W.printHex("Initial", *It); 1975 W.printString("Purpose", Purpose); 1976 } 1977 1978 template <class ELFT> 1979 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, 1980 const GOTEntry *BeginIt, 1981 const GOTEntry *It, StringRef StrTable, 1982 const Elf_Sym *Sym) { 1983 DictScope D(W, "Entry"); 1984 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry); 1985 W.printHex("Address", PLTAddr + Offset); 1986 W.printHex("Initial", *It); 1987 W.printHex("Value", Sym->st_value); 1988 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes)); 1989 1990 unsigned SectionIndex = 0; 1991 StringRef SectionName; 1992 getSectionNameIndex(*Obj, Sym, Dumper->getDotDynSymSec(), 1993 Dumper->getShndxTable(), SectionName, SectionIndex); 1994 W.printHex("Section", SectionName, SectionIndex); 1995 1996 std::string FullSymbolName = Dumper->getFullSymbolName(Sym, StrTable, true); 1997 W.printNumber("Name", FullSymbolName, Sym->st_name); 1998 } 1999 2000 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() { 2001 if (Obj->getHeader()->e_machine != EM_MIPS) { 2002 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n"; 2003 return; 2004 } 2005 2006 MipsGOTParser<ELFT> GOTParser(this, Obj, dynamic_table(), W); 2007 GOTParser.parseGOT(); 2008 GOTParser.parsePLT(); 2009 } 2010 2011 static const EnumEntry<unsigned> ElfMipsISAExtType[] = { 2012 {"None", Mips::AFL_EXT_NONE}, 2013 {"Broadcom SB-1", Mips::AFL_EXT_SB1}, 2014 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON}, 2015 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2}, 2016 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP}, 2017 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3}, 2018 {"LSI R4010", Mips::AFL_EXT_4010}, 2019 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E}, 2020 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F}, 2021 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A}, 2022 {"MIPS R4650", Mips::AFL_EXT_4650}, 2023 {"MIPS R5900", Mips::AFL_EXT_5900}, 2024 {"MIPS R10000", Mips::AFL_EXT_10000}, 2025 {"NEC VR4100", Mips::AFL_EXT_4100}, 2026 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111}, 2027 {"NEC VR4120", Mips::AFL_EXT_4120}, 2028 {"NEC VR5400", Mips::AFL_EXT_5400}, 2029 {"NEC VR5500", Mips::AFL_EXT_5500}, 2030 {"RMI Xlr", Mips::AFL_EXT_XLR}, 2031 {"Toshiba R3900", Mips::AFL_EXT_3900} 2032 }; 2033 2034 static const EnumEntry<unsigned> ElfMipsASEFlags[] = { 2035 {"DSP", Mips::AFL_ASE_DSP}, 2036 {"DSPR2", Mips::AFL_ASE_DSPR2}, 2037 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA}, 2038 {"MCU", Mips::AFL_ASE_MCU}, 2039 {"MDMX", Mips::AFL_ASE_MDMX}, 2040 {"MIPS-3D", Mips::AFL_ASE_MIPS3D}, 2041 {"MT", Mips::AFL_ASE_MT}, 2042 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS}, 2043 {"VZ", Mips::AFL_ASE_VIRT}, 2044 {"MSA", Mips::AFL_ASE_MSA}, 2045 {"MIPS16", Mips::AFL_ASE_MIPS16}, 2046 {"microMIPS", Mips::AFL_ASE_MICROMIPS}, 2047 {"XPA", Mips::AFL_ASE_XPA} 2048 }; 2049 2050 static const EnumEntry<unsigned> ElfMipsFpABIType[] = { 2051 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY}, 2052 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE}, 2053 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE}, 2054 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT}, 2055 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)", 2056 Mips::Val_GNU_MIPS_ABI_FP_OLD_64}, 2057 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX}, 2058 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64}, 2059 {"Hard float compat (32-bit CPU, 64-bit FPU)", 2060 Mips::Val_GNU_MIPS_ABI_FP_64A} 2061 }; 2062 2063 static const EnumEntry<unsigned> ElfMipsFlags1[] { 2064 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG}, 2065 }; 2066 2067 static int getMipsRegisterSize(uint8_t Flag) { 2068 switch (Flag) { 2069 case Mips::AFL_REG_NONE: 2070 return 0; 2071 case Mips::AFL_REG_32: 2072 return 32; 2073 case Mips::AFL_REG_64: 2074 return 64; 2075 case Mips::AFL_REG_128: 2076 return 128; 2077 default: 2078 return -1; 2079 } 2080 } 2081 2082 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() { 2083 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags"); 2084 if (!Shdr) { 2085 W.startLine() << "There is no .MIPS.abiflags section in the file.\n"; 2086 return; 2087 } 2088 ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr); 2089 if (!Sec) { 2090 W.startLine() << "The .MIPS.abiflags section is empty.\n"; 2091 return; 2092 } 2093 if (Sec->size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) { 2094 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n"; 2095 return; 2096 } 2097 2098 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec->data()); 2099 2100 raw_ostream &OS = W.getOStream(); 2101 DictScope GS(W, "MIPS ABI Flags"); 2102 2103 W.printNumber("Version", Flags->version); 2104 W.startLine() << "ISA: "; 2105 if (Flags->isa_rev <= 1) 2106 OS << format("MIPS%u", Flags->isa_level); 2107 else 2108 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev); 2109 OS << "\n"; 2110 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)); 2111 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags)); 2112 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType)); 2113 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size)); 2114 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size)); 2115 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size)); 2116 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1)); 2117 W.printHex("Flags 2", Flags->flags2); 2118 } 2119 2120 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() { 2121 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo"); 2122 if (!Shdr) { 2123 W.startLine() << "There is no .reginfo section in the file.\n"; 2124 return; 2125 } 2126 ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr); 2127 if (!Sec) { 2128 W.startLine() << "The .reginfo section is empty.\n"; 2129 return; 2130 } 2131 if (Sec->size() != sizeof(Elf_Mips_RegInfo<ELFT>)) { 2132 W.startLine() << "The .reginfo section has a wrong size.\n"; 2133 return; 2134 } 2135 2136 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec->data()); 2137 2138 DictScope GS(W, "MIPS RegInfo"); 2139 W.printHex("GP", Reginfo->ri_gp_value); 2140 W.printHex("General Mask", Reginfo->ri_gprmask); 2141 W.printHex("Co-Proc Mask0", Reginfo->ri_cprmask[0]); 2142 W.printHex("Co-Proc Mask1", Reginfo->ri_cprmask[1]); 2143 W.printHex("Co-Proc Mask2", Reginfo->ri_cprmask[2]); 2144 W.printHex("Co-Proc Mask3", Reginfo->ri_cprmask[3]); 2145 } 2146 2147 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const { 2148 const Elf_Shdr *StackMapSection = nullptr; 2149 for (const auto &Sec : Obj->sections()) { 2150 ErrorOr<StringRef> Name = Obj->getSectionName(&Sec); 2151 if (*Name == ".llvm_stackmaps") { 2152 StackMapSection = &Sec; 2153 break; 2154 } 2155 } 2156 2157 if (!StackMapSection) 2158 return; 2159 2160 StringRef StackMapContents; 2161 ErrorOr<ArrayRef<uint8_t>> StackMapContentsArray = 2162 Obj->getSectionContents(StackMapSection); 2163 2164 prettyPrintStackMap( 2165 llvm::outs(), 2166 StackMapV1Parser<ELFT::TargetEndianness>(*StackMapContentsArray)); 2167 } 2168
