LLVM  10.0.0svn
ELFObjectFile.h
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1 //===- ELFObjectFile.h - ELF object file implementation ---------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares the ELFObjectFile template class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_OBJECT_ELFOBJECTFILE_H
14 #define LLVM_OBJECT_ELFOBJECTFILE_H
15 
16 #include "llvm/ADT/ArrayRef.h"
17 #include "llvm/ADT/STLExtras.h"
18 #include "llvm/ADT/SmallVector.h"
19 #include "llvm/ADT/StringRef.h"
20 #include "llvm/ADT/Triple.h"
22 #include "llvm/BinaryFormat/ELF.h"
24 #include "llvm/Object/Binary.h"
25 #include "llvm/Object/ELF.h"
26 #include "llvm/Object/ELFTypes.h"
27 #include "llvm/Object/Error.h"
28 #include "llvm/Object/ObjectFile.h"
32 #include "llvm/Support/Casting.h"
33 #include "llvm/Support/Endian.h"
34 #include "llvm/Support/Error.h"
37 #include <cassert>
38 #include <cstdint>
39 #include <system_error>
40 
41 namespace llvm {
42 namespace object {
43 
44 constexpr int NumElfSymbolTypes = 8;
46 
48 
49 class ELFObjectFileBase : public ObjectFile {
50  friend class ELFRelocationRef;
51  friend class ELFSectionRef;
52  friend class ELFSymbolRef;
53 
54 protected:
56 
57  virtual uint64_t getSymbolSize(DataRefImpl Symb) const = 0;
58  virtual uint8_t getSymbolBinding(DataRefImpl Symb) const = 0;
59  virtual uint8_t getSymbolOther(DataRefImpl Symb) const = 0;
60  virtual uint8_t getSymbolELFType(DataRefImpl Symb) const = 0;
61 
62  virtual uint32_t getSectionType(DataRefImpl Sec) const = 0;
63  virtual uint64_t getSectionFlags(DataRefImpl Sec) const = 0;
64  virtual uint64_t getSectionOffset(DataRefImpl Sec) const = 0;
65 
66  virtual Expected<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
67  virtual Error getBuildAttributes(ARMAttributeParser &Attributes) const = 0;
68 
69 public:
71 
73 
74  /// Returns platform-specific object flags, if any.
75  virtual unsigned getPlatformFlags() const = 0;
76 
78 
79  static bool classof(const Binary *v) { return v->isELF(); }
80 
81  SubtargetFeatures getFeatures() const override;
82 
84 
86 
88 
89  void setARMSubArch(Triple &TheTriple) const override;
90 
91  virtual uint16_t getEType() const = 0;
92 
93  virtual uint16_t getEMachine() const = 0;
94 
95  std::vector<std::pair<DataRefImpl, uint64_t>> getPltAddresses() const;
96 };
97 
98 class ELFSectionRef : public SectionRef {
99 public:
101  assert(isa<ELFObjectFileBase>(SectionRef::getObject()));
102  }
103 
104  const ELFObjectFileBase *getObject() const {
105  return cast<ELFObjectFileBase>(SectionRef::getObject());
106  }
107 
108  uint32_t getType() const {
109  return getObject()->getSectionType(getRawDataRefImpl());
110  }
111 
112  uint64_t getFlags() const {
113  return getObject()->getSectionFlags(getRawDataRefImpl());
114  }
115 
116  uint64_t getOffset() const {
117  return getObject()->getSectionOffset(getRawDataRefImpl());
118  }
119 };
120 
122 public:
124  assert(isa<ELFObjectFileBase>(B->getObject()));
125  }
126 
127  const ELFSectionRef *operator->() const {
128  return static_cast<const ELFSectionRef *>(section_iterator::operator->());
129  }
130 
131  const ELFSectionRef &operator*() const {
132  return static_cast<const ELFSectionRef &>(section_iterator::operator*());
133  }
134 };
135 
136 class ELFSymbolRef : public SymbolRef {
137 public:
139  assert(isa<ELFObjectFileBase>(SymbolRef::getObject()));
140  }
141 
142  const ELFObjectFileBase *getObject() const {
143  return cast<ELFObjectFileBase>(BasicSymbolRef::getObject());
144  }
145 
146  uint64_t getSize() const {
147  return getObject()->getSymbolSize(getRawDataRefImpl());
148  }
149 
150  uint8_t getBinding() const {
151  return getObject()->getSymbolBinding(getRawDataRefImpl());
152  }
153 
154  uint8_t getOther() const {
155  return getObject()->getSymbolOther(getRawDataRefImpl());
156  }
157 
158  uint8_t getELFType() const {
159  return getObject()->getSymbolELFType(getRawDataRefImpl());
160  }
161 
163  uint8_t Type = getELFType();
164  for (auto &EE : ElfSymbolTypes) {
165  if (EE.Value == Type) {
166  return EE.AltName;
167  }
168  }
169  return "";
170  }
171 };
172 
174 public:
176  : symbol_iterator(SymbolRef(B->getRawDataRefImpl(),
177  cast<ELFObjectFileBase>(B->getObject()))) {}
178 
179  const ELFSymbolRef *operator->() const {
180  return static_cast<const ELFSymbolRef *>(symbol_iterator::operator->());
181  }
182 
183  const ELFSymbolRef &operator*() const {
184  return static_cast<const ELFSymbolRef &>(symbol_iterator::operator*());
185  }
186 };
187 
189 public:
191  assert(isa<ELFObjectFileBase>(RelocationRef::getObject()));
192  }
193 
194  const ELFObjectFileBase *getObject() const {
195  return cast<ELFObjectFileBase>(RelocationRef::getObject());
196  }
197 
199  return getObject()->getRelocationAddend(getRawDataRefImpl());
200  }
201 };
202 
204 public:
207  B->getRawDataRefImpl(), cast<ELFObjectFileBase>(B->getObject()))) {}
208 
209  const ELFRelocationRef *operator->() const {
210  return static_cast<const ELFRelocationRef *>(
212  }
213 
214  const ELFRelocationRef &operator*() const {
215  return static_cast<const ELFRelocationRef &>(
217  }
218 };
219 
223 }
224 
225 template <class ELFT> class ELFObjectFile : public ELFObjectFileBase {
226  uint16_t getEMachine() const override;
227  uint16_t getEType() const override;
228  uint64_t getSymbolSize(DataRefImpl Sym) const override;
229 
230 public:
232 
233  using uintX_t = typename ELFT::uint;
234 
235  using Elf_Sym = typename ELFT::Sym;
236  using Elf_Shdr = typename ELFT::Shdr;
237  using Elf_Ehdr = typename ELFT::Ehdr;
238  using Elf_Rel = typename ELFT::Rel;
239  using Elf_Rela = typename ELFT::Rela;
240  using Elf_Dyn = typename ELFT::Dyn;
241 
242 private:
243  ELFObjectFile(MemoryBufferRef Object, ELFFile<ELFT> EF,
244  const Elf_Shdr *DotDynSymSec, const Elf_Shdr *DotSymtabSec,
245  ArrayRef<Elf_Word> ShndxTable);
246 
247 protected:
248  ELFFile<ELFT> EF;
249 
250  const Elf_Shdr *DotDynSymSec = nullptr; // Dynamic symbol table section.
251  const Elf_Shdr *DotSymtabSec = nullptr; // Symbol table section.
252  ArrayRef<Elf_Word> ShndxTable;
253 
254  void moveSymbolNext(DataRefImpl &Symb) const override;
256  Expected<uint64_t> getSymbolAddress(DataRefImpl Symb) const override;
257  uint64_t getSymbolValueImpl(DataRefImpl Symb) const override;
259  uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override;
260  uint32_t getSymbolFlags(DataRefImpl Symb) const override;
261  uint8_t getSymbolBinding(DataRefImpl Symb) const override;
262  uint8_t getSymbolOther(DataRefImpl Symb) const override;
263  uint8_t getSymbolELFType(DataRefImpl Symb) const override;
266  const Elf_Shdr *SymTab) const;
268 
269  void moveSectionNext(DataRefImpl &Sec) const override;
270  Expected<StringRef> getSectionName(DataRefImpl Sec) const override;
271  uint64_t getSectionAddress(DataRefImpl Sec) const override;
272  uint64_t getSectionIndex(DataRefImpl Sec) const override;
273  uint64_t getSectionSize(DataRefImpl Sec) const override;
274  Expected<ArrayRef<uint8_t>>
275  getSectionContents(DataRefImpl Sec) const override;
276  uint64_t getSectionAlignment(DataRefImpl Sec) const override;
277  bool isSectionCompressed(DataRefImpl Sec) const override;
278  bool isSectionText(DataRefImpl Sec) const override;
279  bool isSectionData(DataRefImpl Sec) const override;
280  bool isSectionBSS(DataRefImpl Sec) const override;
281  bool isSectionVirtual(DataRefImpl Sec) const override;
282  bool isBerkeleyText(DataRefImpl Sec) const override;
283  bool isBerkeleyData(DataRefImpl Sec) const override;
285  relocation_iterator section_rel_end(DataRefImpl Sec) const override;
286  std::vector<SectionRef> dynamic_relocation_sections() const override;
288 
289  void moveRelocationNext(DataRefImpl &Rel) const override;
290  uint64_t getRelocationOffset(DataRefImpl Rel) const override;
291  symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
292  uint64_t getRelocationType(DataRefImpl Rel) const override;
294  SmallVectorImpl<char> &Result) const override;
295 
296  uint32_t getSectionType(DataRefImpl Sec) const override;
297  uint64_t getSectionFlags(DataRefImpl Sec) const override;
298  uint64_t getSectionOffset(DataRefImpl Sec) const override;
300 
301  /// Get the relocation section that contains \a Rel.
302  const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
303  auto RelSecOrErr = EF.getSection(Rel.d.a);
304  if (!RelSecOrErr)
305  report_fatal_error(errorToErrorCode(RelSecOrErr.takeError()).message());
306  return *RelSecOrErr;
307  }
308 
309  DataRefImpl toDRI(const Elf_Shdr *SymTable, unsigned SymbolNum) const {
310  DataRefImpl DRI;
311  if (!SymTable) {
312  DRI.d.a = 0;
313  DRI.d.b = 0;
314  return DRI;
315  }
316  assert(SymTable->sh_type == ELF::SHT_SYMTAB ||
317  SymTable->sh_type == ELF::SHT_DYNSYM);
318 
319  auto SectionsOrErr = EF.sections();
320  if (!SectionsOrErr) {
321  DRI.d.a = 0;
322  DRI.d.b = 0;
323  return DRI;
324  }
325  uintptr_t SHT = reinterpret_cast<uintptr_t>((*SectionsOrErr).begin());
326  unsigned SymTableIndex =
327  (reinterpret_cast<uintptr_t>(SymTable) - SHT) / sizeof(Elf_Shdr);
328 
329  DRI.d.a = SymTableIndex;
330  DRI.d.b = SymbolNum;
331  return DRI;
332  }
333 
334  const Elf_Shdr *toELFShdrIter(DataRefImpl Sec) const {
335  return reinterpret_cast<const Elf_Shdr *>(Sec.p);
336  }
337 
338  DataRefImpl toDRI(const Elf_Shdr *Sec) const {
339  DataRefImpl DRI;
340  DRI.p = reinterpret_cast<uintptr_t>(Sec);
341  return DRI;
342  }
343 
344  DataRefImpl toDRI(const Elf_Dyn *Dyn) const {
345  DataRefImpl DRI;
346  DRI.p = reinterpret_cast<uintptr_t>(Dyn);
347  return DRI;
348  }
349 
350  bool isExportedToOtherDSO(const Elf_Sym *ESym) const {
351  unsigned char Binding = ESym->getBinding();
352  unsigned char Visibility = ESym->getVisibility();
353 
354  // A symbol is exported if its binding is either GLOBAL or WEAK, and its
355  // visibility is either DEFAULT or PROTECTED. All other symbols are not
356  // exported.
357  return (
358  (Binding == ELF::STB_GLOBAL || Binding == ELF::STB_WEAK ||
359  Binding == ELF::STB_GNU_UNIQUE) &&
360  (Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_PROTECTED));
361  }
362 
363  Error getBuildAttributes(ARMAttributeParser &Attributes) const override {
364  auto SectionsOrErr = EF.sections();
365  if (!SectionsOrErr)
366  return SectionsOrErr.takeError();
367 
368  for (const Elf_Shdr &Sec : *SectionsOrErr) {
369  if (Sec.sh_type == ELF::SHT_ARM_ATTRIBUTES) {
370  auto ErrorOrContents = EF.getSectionContents(&Sec);
371  if (!ErrorOrContents)
372  return ErrorOrContents.takeError();
373 
374  auto Contents = ErrorOrContents.get();
375  if (Contents[0] != ARMBuildAttrs::Format_Version || Contents.size() == 1)
376  return Error::success();
377 
378  Attributes.Parse(Contents, ELFT::TargetEndianness == support::little);
379  break;
380  }
381  }
382  return Error::success();
383  }
384 
385  // This flag is used for classof, to distinguish ELFObjectFile from
386  // its subclass. If more subclasses will be created, this flag will
387  // have to become an enum.
389 
390 public:
392  static Expected<ELFObjectFile<ELFT>> create(MemoryBufferRef Object);
393 
394  const Elf_Rel *getRel(DataRefImpl Rel) const;
395  const Elf_Rela *getRela(DataRefImpl Rela) const;
396 
397  const Elf_Sym *getSymbol(DataRefImpl Sym) const {
398  auto Ret = EF.template getEntry<Elf_Sym>(Sym.d.a, Sym.d.b);
399  if (!Ret)
400  report_fatal_error(errorToErrorCode(Ret.takeError()).message());
401  return *Ret;
402  }
403 
404  const Elf_Shdr *getSection(DataRefImpl Sec) const {
405  return reinterpret_cast<const Elf_Shdr *>(Sec.p);
406  }
407 
408  basic_symbol_iterator symbol_begin() const override;
409  basic_symbol_iterator symbol_end() const override;
410 
411  elf_symbol_iterator dynamic_symbol_begin() const;
412  elf_symbol_iterator dynamic_symbol_end() const;
413 
414  section_iterator section_begin() const override;
415  section_iterator section_end() const override;
416 
418 
419  uint8_t getBytesInAddress() const override;
420  StringRef getFileFormatName() const override;
421  Triple::ArchType getArch() const override;
422  Expected<uint64_t> getStartAddress() const override;
423 
424  unsigned getPlatformFlags() const override { return EF.getHeader()->e_flags; }
425 
426  const ELFFile<ELFT> *getELFFile() const { return &EF; }
427 
428  bool isDyldType() const { return isDyldELFObject; }
429  static bool classof(const Binary *v) {
430  return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
431  ELFT::Is64Bits);
432  }
433 
435 
436  bool isRelocatableObject() const override;
437 };
438 
443 
444 template <class ELFT>
446  ++Sym.d.b;
447 }
448 
449 template <class ELFT>
451  const Elf_Sym *ESym = getSymbol(Sym);
452  auto SymTabOrErr = EF.getSection(Sym.d.a);
453  if (!SymTabOrErr)
454  return SymTabOrErr.takeError();
455  const Elf_Shdr *SymTableSec = *SymTabOrErr;
456  auto StrTabOrErr = EF.getSection(SymTableSec->sh_link);
457  if (!StrTabOrErr)
458  return StrTabOrErr.takeError();
459  const Elf_Shdr *StringTableSec = *StrTabOrErr;
460  auto SymStrTabOrErr = EF.getStringTable(StringTableSec);
461  if (!SymStrTabOrErr)
462  return SymStrTabOrErr.takeError();
463  Expected<StringRef> Name = ESym->getName(*SymStrTabOrErr);
464 
465  // If the symbol name is empty use the section name.
466  if ((!Name || Name->empty()) && ESym->getType() == ELF::STT_SECTION) {
467  StringRef SecName;
469  if (Sec && !(*Sec)->getName(SecName))
470  return SecName;
471  }
472  return Name;
473 }
474 
475 template <class ELFT>
477  return getSection(Sec)->sh_flags;
478 }
479 
480 template <class ELFT>
482  return getSection(Sec)->sh_type;
483 }
484 
485 template <class ELFT>
487  return getSection(Sec)->sh_offset;
488 }
489 
490 template <class ELFT>
492  const Elf_Sym *ESym = getSymbol(Symb);
493  uint64_t Ret = ESym->st_value;
494  if (ESym->st_shndx == ELF::SHN_ABS)
495  return Ret;
496 
497  const Elf_Ehdr *Header = EF.getHeader();
498  // Clear the ARM/Thumb or microMIPS indicator flag.
499  if ((Header->e_machine == ELF::EM_ARM || Header->e_machine == ELF::EM_MIPS) &&
500  ESym->getType() == ELF::STT_FUNC)
501  Ret &= ~1;
502 
503  return Ret;
504 }
505 
506 template <class ELFT>
509  uint64_t Result = getSymbolValue(Symb);
510  const Elf_Sym *ESym = getSymbol(Symb);
511  switch (ESym->st_shndx) {
512  case ELF::SHN_COMMON:
513  case ELF::SHN_UNDEF:
514  case ELF::SHN_ABS:
515  return Result;
516  }
517 
518  const Elf_Ehdr *Header = EF.getHeader();
519  auto SymTabOrErr = EF.getSection(Symb.d.a);
520  if (!SymTabOrErr)
521  return SymTabOrErr.takeError();
522  const Elf_Shdr *SymTab = *SymTabOrErr;
523 
524  if (Header->e_type == ELF::ET_REL) {
525  auto SectionOrErr = EF.getSection(ESym, SymTab, ShndxTable);
526  if (!SectionOrErr)
527  return SectionOrErr.takeError();
528  const Elf_Shdr *Section = *SectionOrErr;
529  if (Section)
530  Result += Section->sh_addr;
531  }
532 
533  return Result;
534 }
535 
536 template <class ELFT>
538  const Elf_Sym *Sym = getSymbol(Symb);
539  if (Sym->st_shndx == ELF::SHN_COMMON)
540  return Sym->st_value;
541  return 0;
542 }
543 
544 template <class ELFT>
545 uint16_t ELFObjectFile<ELFT>::getEMachine() const {
546  return EF.getHeader()->e_machine;
547 }
548 
549 template <class ELFT> uint16_t ELFObjectFile<ELFT>::getEType() const {
550  return EF.getHeader()->e_type;
551 }
552 
553 template <class ELFT>
555  return getSymbol(Sym)->st_size;
556 }
557 
558 template <class ELFT>
560  return getSymbol(Symb)->st_size;
561 }
562 
563 template <class ELFT>
565  return getSymbol(Symb)->getBinding();
566 }
567 
568 template <class ELFT>
570  return getSymbol(Symb)->st_other;
571 }
572 
573 template <class ELFT>
575  return getSymbol(Symb)->getType();
576 }
577 
578 template <class ELFT>
581  const Elf_Sym *ESym = getSymbol(Symb);
582 
583  switch (ESym->getType()) {
584  case ELF::STT_NOTYPE:
585  return SymbolRef::ST_Unknown;
586  case ELF::STT_SECTION:
587  return SymbolRef::ST_Debug;
588  case ELF::STT_FILE:
589  return SymbolRef::ST_File;
590  case ELF::STT_FUNC:
591  return SymbolRef::ST_Function;
592  case ELF::STT_OBJECT:
593  case ELF::STT_COMMON:
594  case ELF::STT_TLS:
595  return SymbolRef::ST_Data;
596  default:
597  return SymbolRef::ST_Other;
598  }
599 }
600 
601 template <class ELFT>
603  const Elf_Sym *ESym = getSymbol(Sym);
604 
605  uint32_t Result = SymbolRef::SF_None;
606 
607  if (ESym->getBinding() != ELF::STB_LOCAL)
608  Result |= SymbolRef::SF_Global;
609 
610  if (ESym->getBinding() == ELF::STB_WEAK)
611  Result |= SymbolRef::SF_Weak;
612 
613  if (ESym->st_shndx == ELF::SHN_ABS)
614  Result |= SymbolRef::SF_Absolute;
615 
616  if (ESym->getType() == ELF::STT_FILE || ESym->getType() == ELF::STT_SECTION)
618 
619  auto DotSymtabSecSyms = EF.symbols(DotSymtabSec);
620  if (DotSymtabSecSyms && ESym == (*DotSymtabSecSyms).begin())
622  auto DotDynSymSecSyms = EF.symbols(DotDynSymSec);
623  if (DotDynSymSecSyms && ESym == (*DotDynSymSecSyms).begin())
625 
626  if (EF.getHeader()->e_machine == ELF::EM_ARM) {
627  if (Expected<StringRef> NameOrErr = getSymbolName(Sym)) {
628  StringRef Name = *NameOrErr;
629  if (Name.startswith("$d") || Name.startswith("$t") ||
630  Name.startswith("$a"))
632  } else {
633  // TODO: Actually report errors helpfully.
634  consumeError(NameOrErr.takeError());
635  }
636  if (ESym->getType() == ELF::STT_FUNC && (ESym->st_value & 1) == 1)
637  Result |= SymbolRef::SF_Thumb;
638  }
639 
640  if (ESym->st_shndx == ELF::SHN_UNDEF)
641  Result |= SymbolRef::SF_Undefined;
642 
643  if (ESym->getType() == ELF::STT_COMMON || ESym->st_shndx == ELF::SHN_COMMON)
644  Result |= SymbolRef::SF_Common;
645 
646  if (isExportedToOtherDSO(ESym))
647  Result |= SymbolRef::SF_Exported;
648 
649  if (ESym->getVisibility() == ELF::STV_HIDDEN)
650  Result |= SymbolRef::SF_Hidden;
651 
652  return Result;
653 }
654 
655 template <class ELFT>
658  const Elf_Shdr *SymTab) const {
659  auto ESecOrErr = EF.getSection(ESym, SymTab, ShndxTable);
660  if (!ESecOrErr)
661  return ESecOrErr.takeError();
662 
663  const Elf_Shdr *ESec = *ESecOrErr;
664  if (!ESec)
665  return section_end();
666 
667  DataRefImpl Sec;
668  Sec.p = reinterpret_cast<intptr_t>(ESec);
669  return section_iterator(SectionRef(Sec, this));
670 }
671 
672 template <class ELFT>
675  const Elf_Sym *Sym = getSymbol(Symb);
676  auto SymTabOrErr = EF.getSection(Symb.d.a);
677  if (!SymTabOrErr)
678  return SymTabOrErr.takeError();
679  const Elf_Shdr *SymTab = *SymTabOrErr;
680  return getSymbolSection(Sym, SymTab);
681 }
682 
683 template <class ELFT>
685  const Elf_Shdr *ESec = getSection(Sec);
686  Sec = toDRI(++ESec);
687 }
688 
689 template <class ELFT>
691  return EF.getSectionName(&*getSection(Sec));
692 }
693 
694 template <class ELFT>
696  return getSection(Sec)->sh_addr;
697 }
698 
699 template <class ELFT>
701  auto SectionsOrErr = EF.sections();
702  handleAllErrors(std::move(SectionsOrErr.takeError()),
703  [](const ErrorInfoBase &) {
704  llvm_unreachable("unable to get section index");
705  });
706  const Elf_Shdr *First = SectionsOrErr->begin();
707  return getSection(Sec) - First;
708 }
709 
710 template <class ELFT>
712  return getSection(Sec)->sh_size;
713 }
714 
715 template <class ELFT>
718  const Elf_Shdr *EShdr = getSection(Sec);
719  if (std::error_code EC =
721  (uintptr_t)base() + EShdr->sh_offset, EShdr->sh_size))
722  return errorCodeToError(EC);
723  return makeArrayRef((const uint8_t *)base() + EShdr->sh_offset,
724  EShdr->sh_size);
725 }
726 
727 template <class ELFT>
729  return getSection(Sec)->sh_addralign;
730 }
731 
732 template <class ELFT>
734  return getSection(Sec)->sh_flags & ELF::SHF_COMPRESSED;
735 }
736 
737 template <class ELFT>
739  return getSection(Sec)->sh_flags & ELF::SHF_EXECINSTR;
740 }
741 
742 template <class ELFT>
744  const Elf_Shdr *EShdr = getSection(Sec);
745  return EShdr->sh_type == ELF::SHT_PROGBITS &&
746  EShdr->sh_flags & ELF::SHF_ALLOC &&
747  !(EShdr->sh_flags & ELF::SHF_EXECINSTR);
748 }
749 
750 template <class ELFT>
752  const Elf_Shdr *EShdr = getSection(Sec);
753  return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
754  EShdr->sh_type == ELF::SHT_NOBITS;
755 }
756 
757 template <class ELFT>
758 std::vector<SectionRef>
760  std::vector<SectionRef> Res;
761  std::vector<uintptr_t> Offsets;
762 
763  auto SectionsOrErr = EF.sections();
764  if (!SectionsOrErr)
765  return Res;
766 
767  for (const Elf_Shdr &Sec : *SectionsOrErr) {
768  if (Sec.sh_type != ELF::SHT_DYNAMIC)
769  continue;
770  Elf_Dyn *Dynamic =
771  reinterpret_cast<Elf_Dyn *>((uintptr_t)base() + Sec.sh_offset);
772  for (; Dynamic->d_tag != ELF::DT_NULL; Dynamic++) {
773  if (Dynamic->d_tag == ELF::DT_REL || Dynamic->d_tag == ELF::DT_RELA ||
774  Dynamic->d_tag == ELF::DT_JMPREL) {
775  Offsets.push_back(Dynamic->d_un.d_val);
776  }
777  }
778  }
779  for (const Elf_Shdr &Sec : *SectionsOrErr) {
780  if (is_contained(Offsets, Sec.sh_addr))
781  Res.emplace_back(toDRI(&Sec), this);
782  }
783  return Res;
784 }
785 
786 template <class ELFT>
788  return getSection(Sec)->sh_type == ELF::SHT_NOBITS;
789 }
790 
791 template <class ELFT>
793  return getSection(Sec)->sh_flags & ELF::SHF_ALLOC &&
794  (getSection(Sec)->sh_flags & ELF::SHF_EXECINSTR ||
795  !(getSection(Sec)->sh_flags & ELF::SHF_WRITE));
796 }
797 
798 template <class ELFT>
800  const Elf_Shdr *EShdr = getSection(Sec);
801  return !isBerkeleyText(Sec) && EShdr->sh_type != ELF::SHT_NOBITS &&
802  EShdr->sh_flags & ELF::SHF_ALLOC;
803 }
804 
805 template <class ELFT>
808  DataRefImpl RelData;
809  auto SectionsOrErr = EF.sections();
810  if (!SectionsOrErr)
812  uintptr_t SHT = reinterpret_cast<uintptr_t>((*SectionsOrErr).begin());
813  RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
814  RelData.d.b = 0;
815  return relocation_iterator(RelocationRef(RelData, this));
816 }
817 
818 template <class ELFT>
821  const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
823  if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
824  return Begin;
825  DataRefImpl RelData = Begin->getRawDataRefImpl();
826  const Elf_Shdr *RelSec = getRelSection(RelData);
827 
828  // Error check sh_link here so that getRelocationSymbol can just use it.
829  auto SymSecOrErr = EF.getSection(RelSec->sh_link);
830  if (!SymSecOrErr)
831  report_fatal_error(errorToErrorCode(SymSecOrErr.takeError()).message());
832 
833  RelData.d.b += S->sh_size / S->sh_entsize;
834  return relocation_iterator(RelocationRef(RelData, this));
835 }
836 
837 template <class ELFT>
840  if (EF.getHeader()->e_type != ELF::ET_REL)
841  return section_end();
842 
843  const Elf_Shdr *EShdr = getSection(Sec);
844  uintX_t Type = EShdr->sh_type;
845  if (Type != ELF::SHT_REL && Type != ELF::SHT_RELA)
846  return section_end();
847 
848  auto R = EF.getSection(EShdr->sh_info);
849  if (!R)
850  report_fatal_error(errorToErrorCode(R.takeError()).message());
851  return section_iterator(SectionRef(toDRI(*R), this));
852 }
853 
854 // Relocations
855 template <class ELFT>
857  ++Rel.d.b;
858 }
859 
860 template <class ELFT>
863  uint32_t symbolIdx;
864  const Elf_Shdr *sec = getRelSection(Rel);
865  if (sec->sh_type == ELF::SHT_REL)
866  symbolIdx = getRel(Rel)->getSymbol(EF.isMips64EL());
867  else
868  symbolIdx = getRela(Rel)->getSymbol(EF.isMips64EL());
869  if (!symbolIdx)
870  return symbol_end();
871 
872  // FIXME: error check symbolIdx
873  DataRefImpl SymbolData;
874  SymbolData.d.a = sec->sh_link;
875  SymbolData.d.b = symbolIdx;
876  return symbol_iterator(SymbolRef(SymbolData, this));
877 }
878 
879 template <class ELFT>
881  const Elf_Shdr *sec = getRelSection(Rel);
882  if (sec->sh_type == ELF::SHT_REL)
883  return getRel(Rel)->r_offset;
884 
885  return getRela(Rel)->r_offset;
886 }
887 
888 template <class ELFT>
890  const Elf_Shdr *sec = getRelSection(Rel);
891  if (sec->sh_type == ELF::SHT_REL)
892  return getRel(Rel)->getType(EF.isMips64EL());
893  else
894  return getRela(Rel)->getType(EF.isMips64EL());
895 }
896 
897 template <class ELFT>
899  return getELFRelocationTypeName(EF.getHeader()->e_machine, Type);
900 }
901 
902 template <class ELFT>
904  DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
906  EF.getRelocationTypeName(type, Result);
907 }
908 
909 template <class ELFT>
912  if (getRelSection(Rel)->sh_type != ELF::SHT_RELA)
913  return createError("Section is not SHT_RELA");
914  return (int64_t)getRela(Rel)->r_addend;
915 }
916 
917 template <class ELFT>
918 const typename ELFObjectFile<ELFT>::Elf_Rel *
920  assert(getRelSection(Rel)->sh_type == ELF::SHT_REL);
921  auto Ret = EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
922  if (!Ret)
923  report_fatal_error(errorToErrorCode(Ret.takeError()).message());
924  return *Ret;
925 }
926 
927 template <class ELFT>
928 const typename ELFObjectFile<ELFT>::Elf_Rela *
930  assert(getRelSection(Rela)->sh_type == ELF::SHT_RELA);
931  auto Ret = EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
932  if (!Ret)
933  report_fatal_error(errorToErrorCode(Ret.takeError()).message());
934  return *Ret;
935 }
936 
937 template <class ELFT>
940  auto EFOrErr = ELFFile<ELFT>::create(Object.getBuffer());
941  if (Error E = EFOrErr.takeError())
942  return std::move(E);
943  auto EF = std::move(*EFOrErr);
944 
945  auto SectionsOrErr = EF.sections();
946  if (!SectionsOrErr)
947  return SectionsOrErr.takeError();
948 
949  const Elf_Shdr *DotDynSymSec = nullptr;
950  const Elf_Shdr *DotSymtabSec = nullptr;
951  ArrayRef<Elf_Word> ShndxTable;
952  for (const Elf_Shdr &Sec : *SectionsOrErr) {
953  switch (Sec.sh_type) {
954  case ELF::SHT_DYNSYM: {
955  if (!DotDynSymSec)
956  DotDynSymSec = &Sec;
957  break;
958  }
959  case ELF::SHT_SYMTAB: {
960  if (!DotSymtabSec)
961  DotSymtabSec = &Sec;
962  break;
963  }
964  case ELF::SHT_SYMTAB_SHNDX: {
965  auto TableOrErr = EF.getSHNDXTable(Sec);
966  if (!TableOrErr)
967  return TableOrErr.takeError();
968  ShndxTable = *TableOrErr;
969  break;
970  }
971  }
972  }
973  return ELFObjectFile<ELFT>(Object, EF, DotDynSymSec, DotSymtabSec,
974  ShndxTable);
975 }
976 
977 template <class ELFT>
979  const Elf_Shdr *DotDynSymSec,
980  const Elf_Shdr *DotSymtabSec,
981  ArrayRef<Elf_Word> ShndxTable)
983  getELFType(ELFT::TargetEndianness == support::little, ELFT::Is64Bits),
984  Object),
985  EF(EF), DotDynSymSec(DotDynSymSec), DotSymtabSec(DotSymtabSec),
986  ShndxTable(ShndxTable) {}
987 
988 template <class ELFT>
989 ELFObjectFile<ELFT>::ELFObjectFile(ELFObjectFile<ELFT> &&Other)
990  : ELFObjectFile(Other.Data, Other.EF, Other.DotDynSymSec,
991  Other.DotSymtabSec, Other.ShndxTable) {}
992 
993 template <class ELFT>
995  DataRefImpl Sym =
996  toDRI(DotSymtabSec,
997  DotSymtabSec && DotSymtabSec->sh_size >= sizeof(Elf_Sym) ? 1 : 0);
998  return basic_symbol_iterator(SymbolRef(Sym, this));
999 }
1000 
1001 template <class ELFT>
1003  const Elf_Shdr *SymTab = DotSymtabSec;
1004  if (!SymTab)
1005  return symbol_begin();
1006  DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
1007  return basic_symbol_iterator(SymbolRef(Sym, this));
1008 }
1009 
1010 template <class ELFT>
1012  DataRefImpl Sym = toDRI(DotDynSymSec, 0);
1013  return symbol_iterator(SymbolRef(Sym, this));
1014 }
1015 
1016 template <class ELFT>
1018  const Elf_Shdr *SymTab = DotDynSymSec;
1019  if (!SymTab)
1020  return dynamic_symbol_begin();
1021  DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
1022  return basic_symbol_iterator(SymbolRef(Sym, this));
1023 }
1024 
1025 template <class ELFT>
1027  auto SectionsOrErr = EF.sections();
1028  if (!SectionsOrErr)
1029  return section_iterator(SectionRef());
1030  return section_iterator(SectionRef(toDRI((*SectionsOrErr).begin()), this));
1031 }
1032 
1033 template <class ELFT>
1035  auto SectionsOrErr = EF.sections();
1036  if (!SectionsOrErr)
1037  return section_iterator(SectionRef());
1038  return section_iterator(SectionRef(toDRI((*SectionsOrErr).end()), this));
1039 }
1040 
1041 template <class ELFT>
1043  return ELFT::Is64Bits ? 8 : 4;
1044 }
1045 
1046 template <class ELFT>
1048  bool IsLittleEndian = ELFT::TargetEndianness == support::little;
1049  switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
1050  case ELF::ELFCLASS32:
1051  switch (EF.getHeader()->e_machine) {
1052  case ELF::EM_386:
1053  return "ELF32-i386";
1054  case ELF::EM_IAMCU:
1055  return "ELF32-iamcu";
1056  case ELF::EM_X86_64:
1057  return "ELF32-x86-64";
1058  case ELF::EM_ARM:
1059  return (IsLittleEndian ? "ELF32-arm-little" : "ELF32-arm-big");
1060  case ELF::EM_AVR:
1061  return "ELF32-avr";
1062  case ELF::EM_HEXAGON:
1063  return "ELF32-hexagon";
1064  case ELF::EM_LANAI:
1065  return "ELF32-lanai";
1066  case ELF::EM_MIPS:
1067  return "ELF32-mips";
1068  case ELF::EM_MSP430:
1069  return "ELF32-msp430";
1070  case ELF::EM_PPC:
1071  return "ELF32-ppc";
1072  case ELF::EM_RISCV:
1073  return "ELF32-riscv";
1074  case ELF::EM_SPARC:
1075  case ELF::EM_SPARC32PLUS:
1076  return "ELF32-sparc";
1077  case ELF::EM_AMDGPU:
1078  return "ELF32-amdgpu";
1079  default:
1080  return "ELF32-unknown";
1081  }
1082  case ELF::ELFCLASS64:
1083  switch (EF.getHeader()->e_machine) {
1084  case ELF::EM_386:
1085  return "ELF64-i386";
1086  case ELF::EM_X86_64:
1087  return "ELF64-x86-64";
1088  case ELF::EM_AARCH64:
1089  return (IsLittleEndian ? "ELF64-aarch64-little" : "ELF64-aarch64-big");
1090  case ELF::EM_PPC64:
1091  return "ELF64-ppc64";
1092  case ELF::EM_RISCV:
1093  return "ELF64-riscv";
1094  case ELF::EM_S390:
1095  return "ELF64-s390";
1096  case ELF::EM_SPARCV9:
1097  return "ELF64-sparc";
1098  case ELF::EM_MIPS:
1099  return "ELF64-mips";
1100  case ELF::EM_AMDGPU:
1101  return "ELF64-amdgpu";
1102  case ELF::EM_BPF:
1103  return "ELF64-BPF";
1104  default:
1105  return "ELF64-unknown";
1106  }
1107  default:
1108  // FIXME: Proper error handling.
1109  report_fatal_error("Invalid ELFCLASS!");
1110  }
1111 }
1112 
1113 template <class ELFT> Triple::ArchType ELFObjectFile<ELFT>::getArch() const {
1114  bool IsLittleEndian = ELFT::TargetEndianness == support::little;
1115  switch (EF.getHeader()->e_machine) {
1116  case ELF::EM_386:
1117  case ELF::EM_IAMCU:
1118  return Triple::x86;
1119  case ELF::EM_X86_64:
1120  return Triple::x86_64;
1121  case ELF::EM_AARCH64:
1122  return IsLittleEndian ? Triple::aarch64 : Triple::aarch64_be;
1123  case ELF::EM_ARM:
1124  return Triple::arm;
1125  case ELF::EM_AVR:
1126  return Triple::avr;
1127  case ELF::EM_HEXAGON:
1128  return Triple::hexagon;
1129  case ELF::EM_LANAI:
1130  return Triple::lanai;
1131  case ELF::EM_MIPS:
1132  switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
1133  case ELF::ELFCLASS32:
1134  return IsLittleEndian ? Triple::mipsel : Triple::mips;
1135  case ELF::ELFCLASS64:
1136  return IsLittleEndian ? Triple::mips64el : Triple::mips64;
1137  default:
1138  report_fatal_error("Invalid ELFCLASS!");
1139  }
1140  case ELF::EM_MSP430:
1141  return Triple::msp430;
1142  case ELF::EM_PPC:
1143  return Triple::ppc;
1144  case ELF::EM_PPC64:
1145  return IsLittleEndian ? Triple::ppc64le : Triple::ppc64;
1146  case ELF::EM_RISCV:
1147  switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
1148  case ELF::ELFCLASS32:
1149  return Triple::riscv32;
1150  case ELF::ELFCLASS64:
1151  return Triple::riscv64;
1152  default:
1153  report_fatal_error("Invalid ELFCLASS!");
1154  }
1155  case ELF::EM_S390:
1156  return Triple::systemz;
1157 
1158  case ELF::EM_SPARC:
1159  case ELF::EM_SPARC32PLUS:
1160  return IsLittleEndian ? Triple::sparcel : Triple::sparc;
1161  case ELF::EM_SPARCV9:
1162  return Triple::sparcv9;
1163 
1164  case ELF::EM_AMDGPU: {
1165  if (!IsLittleEndian)
1166  return Triple::UnknownArch;
1167 
1168  unsigned MACH = EF.getHeader()->e_flags & ELF::EF_AMDGPU_MACH;
1169  if (MACH >= ELF::EF_AMDGPU_MACH_R600_FIRST &&
1171  return Triple::r600;
1172  if (MACH >= ELF::EF_AMDGPU_MACH_AMDGCN_FIRST &&
1174  return Triple::amdgcn;
1175 
1176  return Triple::UnknownArch;
1177  }
1178 
1179  case ELF::EM_BPF:
1180  return IsLittleEndian ? Triple::bpfel : Triple::bpfeb;
1181 
1182  default:
1183  return Triple::UnknownArch;
1184  }
1185 }
1186 
1187 template <class ELFT>
1189  return EF.getHeader()->e_entry;
1190 }
1191 
1192 template <class ELFT>
1196 }
1197 
1198 template <class ELFT> bool ELFObjectFile<ELFT>::isRelocatableObject() const {
1199  return EF.getHeader()->e_type == ELF::ET_REL;
1200 }
1201 
1202 } // end namespace object
1203 } // end namespace llvm
1204 
1205 #endif // LLVM_OBJECT_ELFOBJECTFILE_H
const content_type & operator*() const
Definition: SymbolicFile.h:78
void getRelocationTypeName(DataRefImpl Rel, SmallVectorImpl< char > &Result) const override
uint64_t getSectionSize(DataRefImpl Sec) const override
virtual uint16_t getEMachine() const =0
static bool classof(const Binary *v)
Expected< uint64_t > getStartAddress() const override
friend class SymbolRef
Definition: ObjectFile.h:244
virtual bool isBerkeleyData(DataRefImpl Sec) const
Definition: ObjectFile.cpp:81
LLVM_ATTRIBUTE_NORETURN void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:139
This class represents lattice values for constants.
Definition: AllocatorList.h:23
static Expected< ELFFile > create(StringRef Object)
Definition: ELF.h:479
SubtargetFeatures getFeatures() const override
struct llvm::object::DataRefImpl::@295 d
const Elf_Shdr * toELFShdrIter(DataRefImpl Sec) const
std::vector< SectionRef > dynamic_relocation_sections() const override
bool isSectionBSS(DataRefImpl Sec) const override
bool isSectionText(DataRefImpl Sec) const override
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
friend class SectionRef
Definition: ObjectFile.h:258
uint8_t getBinding() const
elf_relocation_iterator(const relocation_iterator &B)
LLVM_NODISCARD bool startswith(StringRef Prefix) const
Check if this string starts with the given Prefix.
Definition: StringRef.h:256
This provides a very simple, boring adaptor for a begin and end iterator into a range type...
const ELFObjectFileBase * getObject() const
void moveSymbolNext(DataRefImpl &Symb) const override
static std::error_code checkOffset(MemoryBufferRef M, uintptr_t Addr, const uint64_t Size)
Definition: Binary.h:157
bool isRelocatableObject() const override
True if this is a relocatable object (.o/.obj).
Expected< StringRef > getSymbolName(DataRefImpl Symb) const override
Offsets
Offsets in bytes from the start of the input buffer.
Definition: SIInstrInfo.h:1100
virtual bool isSectionBSS(DataRefImpl Sec) const =0
This class is the base class for all object file types.
Definition: ObjectFile.h:226
elf_symbol_iterator_range symbols() const
virtual Expected< ArrayRef< uint8_t > > getSectionContents(DataRefImpl Sec) const =0
typename ELFT::Rel Elf_Rel
virtual uint64_t getRelocationOffset(DataRefImpl Rel) const =0
const uint8_t * base() const
Definition: ObjectFile.h:232
ELFYAML::ELF_STV Visibility
Definition: ELFYAML.cpp:876
const ObjectFile * getObject() const
Definition: ObjectFile.h:559
virtual uint32_t getSymbolAlignment(DataRefImpl Symb) const
Definition: ObjectFile.cpp:67
Base class for error info classes.
Definition: Error.h:48
bool isSectionVirtual(DataRefImpl Sec) const override
virtual Expected< StringRef > getSymbolName(DataRefImpl Symb) const =0
uint32_t getSectionType(DataRefImpl Sec) const override
virtual Expected< int64_t > getRelocationAddend(DataRefImpl Rel) const =0
void moveRelocationNext(DataRefImpl &Rel) const override
virtual relocation_iterator section_rel_end(DataRefImpl Sec) const =0
basic_symbol_iterator symbol_begin() const override
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override
virtual basic_symbol_iterator symbol_begin() const =0
Definition: BitVector.h:937
void setARMSubArch(Triple &TheTriple) const override
uint8_t getSymbolOther(DataRefImpl Symb) const override
ArrayRef< T > makeArrayRef(const T &OneElt)
Construct an ArrayRef from a single element.
Definition: ArrayRef.h:450
const Elf_Shdr * DotSymtabSec
uint64_t getSectionAlignment(DataRefImpl Sec) const override
Expected< Elf_Shdr_Range > sections() const
Definition: ELF.h:488
StringRef getBuffer() const
Definition: MemoryBuffer.h:272
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:41
This is a value type class that represents a single relocation in the list of relocations in the obje...
Definition: ObjectFile.h:52
static Expected< const T * > getObject(MemoryBufferRef M, const void *Ptr, const uint64_t Size=sizeof(T))
Expected< section_iterator > getSymbolSection(const Elf_Sym *Symb, const Elf_Shdr *SymTab) const
elf_section_iterator(const section_iterator &B)
typename ELFT::Ehdr Elf_Ehdr
virtual uint64_t getSectionIndex(DataRefImpl Sec) const =0
const ELFObjectFileBase * getObject() const
Tagged union holding either a T or a Error.
Definition: CachePruning.h:22
Expected< StringRef > getSectionName(DataRefImpl Sec) const override
ELFYAML::ELF_STO Other
Definition: ELFYAML.cpp:877
Expected< const typename ELFT::Shdr * > getSection(typename ELFT::ShdrRange Sections, uint32_t Index)
Definition: ELF.h:294
virtual relocation_iterator section_rel_begin(DataRefImpl Sec) const =0
content_iterator< SectionRef > section_iterator
Definition: ObjectFile.h:48
uint64_t getSymbolValueImpl(DataRefImpl Symb) const override
const ObjectFile * getObject() const
Definition: ObjectFile.h:408
static Error createError(const Twine &Err)
Definition: ELF.h:47
uint8_t getBytesInAddress() const override
The number of bytes used to represent an address in this object file format.
DataRefImpl toDRI(const Elf_Shdr *SymTable, unsigned SymbolNum) const
virtual Error getBuildAttributes(ARMAttributeParser &Attributes) const =0
virtual uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const =0
section_iterator section_begin() const override
MemoryBufferRef getMemoryBufferRef() const
Definition: Binary.cpp:43
void moveSectionNext(DataRefImpl &Sec) const override
elf_symbol_iterator_range getDynamicSymbolIterators() const override
virtual uint64_t getSectionAlignment(DataRefImpl Sec) const =0
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:32
virtual Expected< uint64_t > getStartAddress() const
Definition: ObjectFile.h:327
const llvm::EnumEntry< unsigned > ElfSymbolTypes[NumElfSymbolTypes]
DataRefImpl toDRI(const Elf_Dyn *Dyn) const
constexpr int NumElfSymbolTypes
Definition: ELFObjectFile.h:44
const ObjectFile * getObject() const
Definition: ObjectFile.h:521
virtual uint64_t getSectionOffset(DataRefImpl Sec) const =0
std::enable_if<!is_simple_type< Y >::value, typename cast_retty< X, const Y >::ret_type >::type cast(const Y &Val)
Definition: Casting.h:249
elf_symbol_iterator dynamic_symbol_begin() const
relocation_iterator section_rel_end(DataRefImpl Sec) const override
typename ELFT::Shdr Elf_Shdr
Expected< int64_t > getRelocationAddend(DataRefImpl Rel) const override
std::vector< std::pair< DataRefImpl, uint64_t > > getPltAddresses() const
const content_type * operator->() const
Definition: SymbolicFile.h:76
unsigned getPlatformFlags() const override
Returns platform-specific object flags, if any.
const Elf_Shdr * getSection(DataRefImpl Sec) const
virtual Expected< SymbolRef::Type > getSymbolType(DataRefImpl Symb) const =0
virtual uint32_t getSymbolFlags(DataRefImpl Symb) const =0
uint8_t getSymbolBinding(DataRefImpl Symb) const override
const Elf_Sym * getSymbol(DataRefImpl Sym) const
ELFRelocationRef(const RelocationRef &B)
static bool classof(const Binary *v)
Definition: ELFObjectFile.h:79
const ELFObjectFileBase * getObject() const
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
const Elf_Rela * getRela(DataRefImpl Rela) const
virtual uint8_t getBytesInAddress() const =0
The number of bytes used to represent an address in this object file format.
virtual void moveRelocationNext(DataRefImpl &Rel) const =0
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:45
unsigned int getType() const
Definition: Binary.h:97
uint32_t getSymbolFlags(DataRefImpl Symb) const override
virtual uint64_t getSectionFlags(DataRefImpl Sec) const =0
iterator_range< elf_symbol_iterator > elf_symbol_iterator_range
Definition: ELFObjectFile.h:70
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
Error errorCodeToError(std::error_code EC)
Helper for converting an std::error_code to a Error.
Definition: Error.cpp:87
typename ELFT::Sym Elf_Sym
const Elf_Shdr * DotDynSymSec
Expected< int64_t > getAddend() const
static unsigned int getELFType(bool isLE, bool is64Bits)
Definition: Binary.h:73
section_iterator getRelocatedSection(DataRefImpl Sec) const override
const Elf_Rel * getRel(DataRefImpl Rel) const
virtual std::vector< SectionRef > dynamic_relocation_sections() const
Definition: ObjectFile.h:302
uint32_t getSymbolAlignment(DataRefImpl Symb) const override
bool isSectionData(DataRefImpl Sec) const override
typename ELFT::Dyn Elf_Dyn
virtual Expected< StringRef > getSectionName(DataRefImpl Sec) const =0
virtual basic_symbol_iterator symbol_end() const =0
static Expected< ELFObjectFile< ELFT > > create(MemoryBufferRef Object)
StringRef getELFTypeName() const
bool isExportedToOtherDSO(const Elf_Sym *ESym) const
uint8_t getSymbolELFType(DataRefImpl Symb) const override
uint64_t getSectionIndex(DataRefImpl Sec) const override
bool isELF() const
Definition: Binary.h:114
StringRef getFileFormatName() const override
const ELFSymbolRef & operator*() const
void consumeError(Error Err)
Consume a Error without doing anything.
Definition: Error.h:981
const ELFSectionRef & operator*() const
DataRefImpl toDRI(const Elf_Shdr *Sec) const
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const ELFSectionRef * operator->() const
ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source)
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
uint64_t getSectionAddress(DataRefImpl Sec) const override
uint64_t getRelocationOffset(DataRefImpl Rel) const override
bool isBerkeleyText(DataRefImpl Sec) const override
iterator_range< T > make_range(T x, T y)
Convenience function for iterating over sub-ranges.
StringRef getELFRelocationTypeName(uint32_t Machine, uint32_t Type)
Definition: ELF.cpp:22
typename ELFT::Rela Elf_Rela
void handleAllErrors(Error E, HandlerTs &&... Handlers)
Behaves the same as handleErrors, except that by contract all errors must be handled by the given han...
Definition: Error.h:904
virtual Expected< uint64_t > getSymbolAddress(DataRefImpl Symb) const =0
static ErrorSuccess success()
Create a success value.
Definition: Error.h:326
uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override
friend class RelocationRef
Definition: ObjectFile.h:283
const ELFFile< ELFT > * getELFFile() const
virtual section_iterator section_begin() const =0
const SymbolicFile * getObject() const
Definition: SymbolicFile.h:207
const SymbolRef & operator*() const
Definition: ObjectFile.h:217
virtual uint64_t getSectionAddress(DataRefImpl Sec) const =0
virtual Triple::ArchType getArch() const =0
uint64_t getSymbolValue(DataRefImpl Symb) const
Definition: ObjectFile.cpp:50
virtual unsigned getPlatformFlags() const =0
Returns platform-specific object flags, if any.
virtual symbol_iterator getRelocationSymbol(DataRefImpl Rel) const =0
uint64_t getSectionFlags(DataRefImpl Sec) const override
Expected< uint64_t > getSymbolAddress(DataRefImpl Symb) const override
Triple::ArchType getArch() const override
content_iterator< BasicSymbolRef > basic_symbol_iterator
Definition: SymbolicFile.h:138
elf_symbol_iterator dynamic_symbol_end() const
A range adaptor for a pair of iterators.
MemoryBufferRef Data
Definition: Binary.h:37
Manages the enabling and disabling of subtarget specific features.
bool isBerkeleyData(DataRefImpl Sec) const override
uint64_t getOffset() const
virtual bool isSectionText(DataRefImpl Sec) const =0
virtual uint64_t getSymbolSize(DataRefImpl Symb) const =0
SubtargetFeatures getMIPSFeatures() const
This is a value type class that represents a single symbol in the list of symbols in the object file...
Definition: ObjectFile.h:165
relocation_iterator section_rel_begin(DataRefImpl Sec) const override
Expected< SymbolRef::Type > getSymbolType(DataRefImpl Symb) const override
uint8_t getELFType() const
virtual void moveSectionNext(DataRefImpl &Sec) const =0
Error getBuildAttributes(ARMAttributeParser &Attributes) const override
virtual section_iterator section_end() const =0
virtual bool isBerkeleyText(DataRefImpl Sec) const
Definition: ObjectFile.cpp:77
basic_symbol_iterator symbol_end() const override
virtual uint16_t getEType() const =0
bool isSectionCompressed(DataRefImpl Sec) const override
virtual bool isSectionData(DataRefImpl Sec) const =0
ELFSectionRef(const SectionRef &B)
Expected< ArrayRef< uint8_t > > getSectionContents(DataRefImpl Sec) const override
const ELFSymbolRef * operator->() const
uint64_t getSectionOffset(DataRefImpl Sec) const override
virtual section_iterator getRelocatedSection(DataRefImpl Sec) const
Definition: ObjectFile.cpp:85
virtual uint32_t getSectionType(DataRefImpl Sec) const =0
virtual void moveSymbolNext(DataRefImpl &Symb) const =0
virtual uint64_t getSymbolValueImpl(DataRefImpl Symb) const =0
virtual bool isRelocatableObject() const =0
True if this is a relocatable object (.o/.obj).
section_iterator section_end() const override
virtual uint8_t getSymbolBinding(DataRefImpl Symb) const =0
const SymbolRef * operator->() const
Definition: ObjectFile.h:212
virtual bool isSectionCompressed(DataRefImpl Sec) const =0
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
virtual Expected< section_iterator > getSymbolSection(DataRefImpl Symb) const =0
uint64_t getSize() const
aarch64 promote const
virtual elf_symbol_iterator_range getDynamicSymbolIterators() const =0
virtual bool isSectionVirtual(DataRefImpl Sec) const =0
void Parse(ArrayRef< uint8_t > Section, bool isLittle)
virtual uint64_t getSectionSize(DataRefImpl Sec) const =0
Lightweight error class with error context and mandatory checking.
Definition: Error.h:157
virtual void getRelocationTypeName(DataRefImpl Rel, SmallVectorImpl< char > &Result) const =0
const ELFRelocationRef & operator*() const
content_iterator< RelocationRef > relocation_iterator
Definition: ObjectFile.h:77
SubtargetFeatures getARMFeatures() const
uint64_t getRelocationType(DataRefImpl Rel) const override
#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
Definition: ELFTypes.h:103
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
virtual uint8_t getSymbolELFType(DataRefImpl Symb) const =0
SubtargetFeatures getRISCVFeatures() const
const Elf_Ehdr * getHeader() const
Definition: ELF.h:108
virtual uint8_t getSymbolOther(DataRefImpl Symb) const =0
const ELFRelocationRef * operator->() const
elf_symbol_iterator(const basic_symbol_iterator &B)
virtual StringRef getFileFormatName() const =0
virtual uint64_t getRelocationType(DataRefImpl Rel) const =0
std::error_code errorToErrorCode(Error Err)
Helper for converting an ECError to a std::error_code.
Definition: Error.cpp:93
typename ELFT::uint uintX_t
This is a value type class that represents a single section in the list of sections in the object fil...
Definition: ObjectFile.h:81
ELFSymbolRef(const SymbolRef &B)
bool is_contained(R &&Range, const E &Element)
Wrapper function around std::find to detect if an element exists in a container.
Definition: STLExtras.h:1251