1 //===- ELFObjectFile.h - ELF object file implementation ---------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the ELFObjectFile template class.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_OBJECT_ELFOBJECTFILE_H
15 #define LLVM_OBJECT_ELFOBJECTFILE_H
17 #include "llvm/ADT/DenseMap.h"
18 #include "llvm/ADT/PointerIntPair.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/Object/ELF.h"
23 #include "llvm/Object/ObjectFile.h"
24 #include "llvm/Support/Casting.h"
25 #include "llvm/Support/ELF.h"
26 #include "llvm/Support/Endian.h"
27 #include "llvm/Support/ErrorHandling.h"
28 #include "llvm/Support/MemoryBuffer.h"
29 #include "llvm/Support/raw_ostream.h"
38 class ELFObjectFileBase : public ObjectFile {
40 ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source);
43 virtual ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const = 0;
45 // FIXME: This is a bit of a hack. Every caller should know if it expecting
47 virtual bool hasRelocationAddend(DataRefImpl Rel) const = 0;
49 virtual std::pair<symbol_iterator, symbol_iterator>
50 getELFDynamicSymbolIterators() const = 0;
52 virtual uint64_t getSectionFlags(SectionRef Sec) const = 0;
53 virtual uint32_t getSectionType(SectionRef Sec) const = 0;
55 virtual uint64_t getSymbolSize(SymbolRef Symb) const = 0;
57 static inline bool classof(const Binary *v) { return v->isELF(); }
60 template <class ELFT> class ELFObjectFile : public ELFObjectFileBase {
62 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
64 typedef typename ELFFile<ELFT>::uintX_t uintX_t;
66 typedef typename ELFFile<ELFT>::Elf_Sym Elf_Sym;
67 typedef typename ELFFile<ELFT>::Elf_Shdr Elf_Shdr;
68 typedef typename ELFFile<ELFT>::Elf_Ehdr Elf_Ehdr;
69 typedef typename ELFFile<ELFT>::Elf_Rel Elf_Rel;
70 typedef typename ELFFile<ELFT>::Elf_Rela Elf_Rela;
71 typedef typename ELFFile<ELFT>::Elf_Dyn Elf_Dyn;
73 typedef typename ELFFile<ELFT>::Elf_Sym_Iter Elf_Sym_Iter;
74 typedef typename ELFFile<ELFT>::Elf_Shdr_Iter Elf_Shdr_Iter;
75 typedef typename ELFFile<ELFT>::Elf_Dyn_Iter Elf_Dyn_Iter;
77 uint64_t getSymbolSize(SymbolRef Symb) const override;
82 void moveSymbolNext(DataRefImpl &Symb) const override;
83 std::error_code getSymbolName(DataRefImpl Symb,
84 StringRef &Res) const override;
85 std::error_code getSymbolAddress(DataRefImpl Symb,
86 uint64_t &Res) const override;
87 uint32_t getSymbolAlignment(DataRefImpl Symb) const override;
88 uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override;
89 uint32_t getSymbolFlags(DataRefImpl Symb) const override;
90 std::error_code getSymbolOther(DataRefImpl Symb, uint8_t &Res) const override;
91 std::error_code getSymbolType(DataRefImpl Symb,
92 SymbolRef::Type &Res) const override;
93 section_iterator getSymbolSection(const Elf_Sym *Symb) const;
94 std::error_code getSymbolSection(DataRefImpl Symb,
95 section_iterator &Res) const override;
97 void moveSectionNext(DataRefImpl &Sec) const override;
98 std::error_code getSectionName(DataRefImpl Sec,
99 StringRef &Res) const override;
100 uint64_t getSectionAddress(DataRefImpl Sec) const override;
101 uint64_t getSectionSize(DataRefImpl Sec) const override;
102 std::error_code getSectionContents(DataRefImpl Sec,
103 StringRef &Res) const override;
104 uint64_t getSectionAlignment(DataRefImpl Sec) const override;
105 bool isSectionText(DataRefImpl Sec) const override;
106 bool isSectionData(DataRefImpl Sec) const override;
107 bool isSectionBSS(DataRefImpl Sec) const override;
108 bool isSectionVirtual(DataRefImpl Sec) const override;
109 bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
110 relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
111 relocation_iterator section_rel_end(DataRefImpl Sec) const override;
112 section_iterator getRelocatedSection(DataRefImpl Sec) const override;
114 void moveRelocationNext(DataRefImpl &Rel) const override;
115 std::error_code getRelocationAddress(DataRefImpl Rel,
116 uint64_t &Res) const override;
117 std::error_code getRelocationOffset(DataRefImpl Rel,
118 uint64_t &Res) const override;
119 symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
120 std::error_code getRelocationType(DataRefImpl Rel,
121 uint64_t &Res) const override;
123 getRelocationTypeName(DataRefImpl Rel,
124 SmallVectorImpl<char> &Result) const override;
126 uint64_t getROffset(DataRefImpl Rel) const;
127 StringRef getRelocationTypeName(uint32_t Type) const;
129 /// \brief Get the relocation section that contains \a Rel.
130 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
131 return EF.getSection(Rel.d.a);
134 const Elf_Rel *getRel(DataRefImpl Rel) const;
135 const Elf_Rela *getRela(DataRefImpl Rela) const;
137 Elf_Sym_Iter toELFSymIter(DataRefImpl Symb) const {
138 bool IsDynamic = Symb.p & 1;
141 EF.begin_dynamic_symbols().getEntSize(),
142 reinterpret_cast<const char *>(Symb.p & ~uintptr_t(1)), IsDynamic);
143 return Elf_Sym_Iter(EF.begin_symbols().getEntSize(),
144 reinterpret_cast<const char *>(Symb.p), IsDynamic);
147 DataRefImpl toDRI(Elf_Sym_Iter Symb) const {
149 DRI.p = reinterpret_cast<uintptr_t>(Symb.get()) |
150 static_cast<uintptr_t>(Symb.isDynamic());
154 Elf_Shdr_Iter toELFShdrIter(DataRefImpl Sec) const {
155 return Elf_Shdr_Iter(EF.getHeader()->e_shentsize,
156 reinterpret_cast<const char *>(Sec.p));
159 DataRefImpl toDRI(Elf_Shdr_Iter Sec) const {
161 DRI.p = reinterpret_cast<uintptr_t>(Sec.get());
165 DataRefImpl toDRI(const Elf_Shdr *Sec) const {
167 DRI.p = reinterpret_cast<uintptr_t>(Sec);
171 Elf_Dyn_Iter toELFDynIter(DataRefImpl Dyn) const {
172 return Elf_Dyn_Iter(EF.begin_dynamic_table().getEntSize(),
173 reinterpret_cast<const char *>(Dyn.p));
176 DataRefImpl toDRI(Elf_Dyn_Iter Dyn) const {
178 DRI.p = reinterpret_cast<uintptr_t>(Dyn.get());
182 bool isExportedToOtherDSO(const Elf_Sym *ESym) const {
183 unsigned char Binding = ESym->getBinding();
184 unsigned char Visibility = ESym->getVisibility();
186 // A symbol is exported if its binding is either GLOBAL or WEAK, and its
187 // visibility is either DEFAULT or PROTECTED. All other symbols are not
189 if ((Binding == ELF::STB_GLOBAL || Binding == ELF::STB_WEAK) &&
190 (Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_PROTECTED))
196 // This flag is used for classof, to distinguish ELFObjectFile from
197 // its subclass. If more subclasses will be created, this flag will
198 // have to become an enum.
199 bool isDyldELFObject;
202 ELFObjectFile(MemoryBufferRef Object, std::error_code &EC);
204 const Elf_Sym *getSymbol(DataRefImpl Symb) const;
206 basic_symbol_iterator symbol_begin_impl() const override;
207 basic_symbol_iterator symbol_end_impl() const override;
209 symbol_iterator dynamic_symbol_begin() const;
210 symbol_iterator dynamic_symbol_end() const;
212 section_iterator section_begin() const override;
213 section_iterator section_end() const override;
215 ErrorOr<int64_t> getRelocationAddend(DataRefImpl Rel) const override;
216 bool hasRelocationAddend(DataRefImpl Rel) const override;
218 uint64_t getSectionFlags(SectionRef Sec) const override;
219 uint32_t getSectionType(SectionRef Sec) const override;
221 uint8_t getBytesInAddress() const override;
222 StringRef getFileFormatName() const override;
223 unsigned getArch() const override;
224 StringRef getLoadName() const;
226 std::error_code getPlatformFlags(unsigned &Result) const override {
227 Result = EF.getHeader()->e_flags;
228 return std::error_code();
231 const ELFFile<ELFT> *getELFFile() const { return &EF; }
233 bool isDyldType() const { return isDyldELFObject; }
234 static inline bool classof(const Binary *v) {
235 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
239 std::pair<symbol_iterator, symbol_iterator>
240 getELFDynamicSymbolIterators() const override;
242 bool isRelocatableObject() const override;
245 typedef ELFObjectFile<ELFType<support::little, false>> ELF32LEObjectFile;
246 typedef ELFObjectFile<ELFType<support::little, true>> ELF64LEObjectFile;
247 typedef ELFObjectFile<ELFType<support::big, false>> ELF32BEObjectFile;
248 typedef ELFObjectFile<ELFType<support::big, true>> ELF64BEObjectFile;
250 template <class ELFT>
251 void ELFObjectFile<ELFT>::moveSymbolNext(DataRefImpl &Symb) const {
252 Symb = toDRI(++toELFSymIter(Symb));
255 template <class ELFT>
256 std::error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
257 StringRef &Result) const {
258 ErrorOr<StringRef> Name = EF.getSymbolName(toELFSymIter(Symb));
260 return Name.getError();
262 return std::error_code();
265 template <class ELFT>
266 uint64_t ELFObjectFile<ELFT>::getSectionFlags(SectionRef Sec) const {
267 DataRefImpl DRI = Sec.getRawDataRefImpl();
268 return toELFShdrIter(DRI)->sh_flags;
271 template <class ELFT>
272 uint32_t ELFObjectFile<ELFT>::getSectionType(SectionRef Sec) const {
273 DataRefImpl DRI = Sec.getRawDataRefImpl();
274 return toELFShdrIter(DRI)->sh_type;
277 template <class ELFT>
278 std::error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
279 uint64_t &Result) const {
280 const Elf_Sym *ESym = getSymbol(Symb);
281 switch (ESym->st_shndx) {
282 case ELF::SHN_COMMON:
284 Result = UnknownAddress;
285 return std::error_code();
287 Result = ESym->st_value;
288 return std::error_code();
293 const Elf_Ehdr *Header = EF.getHeader();
294 Result = ESym->st_value;
296 // Clear the ARM/Thumb or microMIPS indicator flag.
297 if ((Header->e_machine == ELF::EM_ARM || Header->e_machine == ELF::EM_MIPS) &&
298 ESym->getType() == ELF::STT_FUNC)
301 if (Header->e_type == ELF::ET_REL) {
302 const typename ELFFile<ELFT>::Elf_Shdr * Section = EF.getSection(ESym);
303 if (Section != nullptr)
304 Result += Section->sh_addr;
307 return std::error_code();
310 template <class ELFT>
311 uint32_t ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb) const {
312 Elf_Sym_Iter Sym = toELFSymIter(Symb);
313 if (Sym->st_shndx == ELF::SHN_COMMON)
314 return Sym->st_value;
318 template <class ELFT>
319 uint64_t ELFObjectFile<ELFT>::getSymbolSize(SymbolRef Symb) const {
320 return toELFSymIter(Symb.getRawDataRefImpl())->st_size;
323 template <class ELFT>
324 uint64_t ELFObjectFile<ELFT>::getCommonSymbolSizeImpl(DataRefImpl Symb) const {
325 return toELFSymIter(Symb)->st_size;
328 template <class ELFT>
329 std::error_code ELFObjectFile<ELFT>::getSymbolOther(DataRefImpl Symb,
330 uint8_t &Result) const {
331 Result = toELFSymIter(Symb)->st_other;
332 return std::error_code();
335 template <class ELFT>
337 ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
338 SymbolRef::Type &Result) const {
339 const Elf_Sym *ESym = getSymbol(Symb);
341 switch (ESym->getType()) {
342 case ELF::STT_NOTYPE:
343 Result = SymbolRef::ST_Unknown;
345 case ELF::STT_SECTION:
346 Result = SymbolRef::ST_Debug;
349 Result = SymbolRef::ST_File;
352 Result = SymbolRef::ST_Function;
354 case ELF::STT_OBJECT:
355 case ELF::STT_COMMON:
357 Result = SymbolRef::ST_Data;
360 Result = SymbolRef::ST_Other;
363 return std::error_code();
366 template <class ELFT>
367 uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb) const {
368 Elf_Sym_Iter EIter = toELFSymIter(Symb);
369 const Elf_Sym *ESym = &*EIter;
371 uint32_t Result = SymbolRef::SF_None;
373 if (ESym->getBinding() != ELF::STB_LOCAL)
374 Result |= SymbolRef::SF_Global;
376 if (ESym->getBinding() == ELF::STB_WEAK)
377 Result |= SymbolRef::SF_Weak;
379 if (ESym->st_shndx == ELF::SHN_ABS)
380 Result |= SymbolRef::SF_Absolute;
382 if (ESym->getType() == ELF::STT_FILE || ESym->getType() == ELF::STT_SECTION ||
383 EIter == EF.begin_symbols() || EIter == EF.begin_dynamic_symbols())
384 Result |= SymbolRef::SF_FormatSpecific;
386 if (ESym->st_shndx == ELF::SHN_UNDEF)
387 Result |= SymbolRef::SF_Undefined;
389 if (ESym->getType() == ELF::STT_COMMON || ESym->st_shndx == ELF::SHN_COMMON)
390 Result |= SymbolRef::SF_Common;
392 if (isExportedToOtherDSO(ESym))
393 Result |= SymbolRef::SF_Exported;
395 if (ESym->getVisibility() == ELF::STV_HIDDEN)
396 Result |= SymbolRef::SF_Hidden;
401 template <class ELFT>
403 ELFObjectFile<ELFT>::getSymbolSection(const Elf_Sym *ESym) const {
404 const Elf_Shdr *ESec = EF.getSection(ESym);
406 return section_end();
409 Sec.p = reinterpret_cast<intptr_t>(ESec);
410 return section_iterator(SectionRef(Sec, this));
414 template <class ELFT>
416 ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
417 section_iterator &Res) const {
418 Res = getSymbolSection(getSymbol(Symb));
419 return std::error_code();
422 template <class ELFT>
423 void ELFObjectFile<ELFT>::moveSectionNext(DataRefImpl &Sec) const {
424 Sec = toDRI(++toELFShdrIter(Sec));
427 template <class ELFT>
428 std::error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
429 StringRef &Result) const {
430 ErrorOr<StringRef> Name = EF.getSectionName(&*toELFShdrIter(Sec));
432 return Name.getError();
434 return std::error_code();
437 template <class ELFT>
438 uint64_t ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec) const {
439 return toELFShdrIter(Sec)->sh_addr;
442 template <class ELFT>
443 uint64_t ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec) const {
444 return toELFShdrIter(Sec)->sh_size;
447 template <class ELFT>
449 ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
450 StringRef &Result) const {
451 Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
452 Result = StringRef((const char *)base() + EShdr->sh_offset, EShdr->sh_size);
453 return std::error_code();
456 template <class ELFT>
457 uint64_t ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec) const {
458 return toELFShdrIter(Sec)->sh_addralign;
461 template <class ELFT>
462 bool ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec) const {
463 return toELFShdrIter(Sec)->sh_flags & ELF::SHF_EXECINSTR;
466 template <class ELFT>
467 bool ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec) const {
468 Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
469 return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
470 EShdr->sh_type == ELF::SHT_PROGBITS;
473 template <class ELFT>
474 bool ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec) const {
475 Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
476 return EShdr->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) &&
477 EShdr->sh_type == ELF::SHT_NOBITS;
480 template <class ELFT>
481 bool ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec) const {
482 return toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
485 template <class ELFT>
486 bool ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
487 DataRefImpl Symb) const {
488 Elf_Sym_Iter ESym = toELFSymIter(Symb);
490 uintX_t Index = ESym->st_shndx;
491 bool Reserved = Index >= ELF::SHN_LORESERVE && Index <= ELF::SHN_HIRESERVE;
493 return !Reserved && (&*toELFShdrIter(Sec) == EF.getSection(ESym->st_shndx));
496 template <class ELFT>
498 ELFObjectFile<ELFT>::section_rel_begin(DataRefImpl Sec) const {
500 uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.begin_sections().get());
501 RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
503 return relocation_iterator(RelocationRef(RelData, this));
506 template <class ELFT>
508 ELFObjectFile<ELFT>::section_rel_end(DataRefImpl Sec) const {
510 uintptr_t SHT = reinterpret_cast<uintptr_t>(EF.begin_sections().get());
511 const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
512 RelData.d.a = (Sec.p - SHT) / EF.getHeader()->e_shentsize;
513 if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
516 RelData.d.b = S->sh_size / S->sh_entsize;
518 return relocation_iterator(RelocationRef(RelData, this));
521 template <class ELFT>
523 ELFObjectFile<ELFT>::getRelocatedSection(DataRefImpl Sec) const {
524 if (EF.getHeader()->e_type != ELF::ET_REL)
525 return section_end();
527 Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
528 uintX_t Type = EShdr->sh_type;
529 if (Type != ELF::SHT_REL && Type != ELF::SHT_RELA)
530 return section_end();
532 const Elf_Shdr *R = EF.getSection(EShdr->sh_info);
533 return section_iterator(SectionRef(toDRI(R), this));
537 template <class ELFT>
538 void ELFObjectFile<ELFT>::moveRelocationNext(DataRefImpl &Rel) const {
542 template <class ELFT>
544 ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel) const {
546 const Elf_Shdr *sec = getRelSection(Rel);
547 switch (sec->sh_type) {
549 report_fatal_error("Invalid section type in Rel!");
551 symbolIdx = getRel(Rel)->getSymbol(EF.isMips64EL());
554 case ELF::SHT_RELA: {
555 symbolIdx = getRela(Rel)->getSymbol(EF.isMips64EL());
562 const Elf_Shdr *SymSec = EF.getSection(sec->sh_link);
564 DataRefImpl SymbolData;
565 switch (SymSec->sh_type) {
567 report_fatal_error("Invalid symbol table section type!");
568 case ELF::SHT_SYMTAB:
569 SymbolData = toDRI(EF.begin_symbols() + symbolIdx);
571 case ELF::SHT_DYNSYM:
572 SymbolData = toDRI(EF.begin_dynamic_symbols() + symbolIdx);
576 return symbol_iterator(SymbolRef(SymbolData, this));
579 template <class ELFT>
581 ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
582 uint64_t &Result) const {
583 uint64_t ROffset = getROffset(Rel);
584 const Elf_Ehdr *Header = EF.getHeader();
586 if (Header->e_type == ELF::ET_REL) {
587 const Elf_Shdr *RelocationSec = getRelSection(Rel);
588 const Elf_Shdr *RelocatedSec = EF.getSection(RelocationSec->sh_info);
589 Result = ROffset + RelocatedSec->sh_addr;
594 return std::error_code();
597 template <class ELFT>
599 ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
600 uint64_t &Result) const {
601 assert(EF.getHeader()->e_type == ELF::ET_REL &&
602 "Only relocatable object files have relocation offsets");
603 Result = getROffset(Rel);
604 return std::error_code();
607 template <class ELFT>
608 uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const {
609 const Elf_Shdr *sec = getRelSection(Rel);
610 switch (sec->sh_type) {
612 report_fatal_error("Invalid section type in Rel!");
614 return getRel(Rel)->r_offset;
616 return getRela(Rel)->r_offset;
620 template <class ELFT>
621 std::error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
622 uint64_t &Result) const {
623 const Elf_Shdr *sec = getRelSection(Rel);
624 switch (sec->sh_type) {
626 report_fatal_error("Invalid section type in Rel!");
628 Result = getRel(Rel)->getType(EF.isMips64EL());
631 case ELF::SHT_RELA: {
632 Result = getRela(Rel)->getType(EF.isMips64EL());
636 return std::error_code();
639 template <class ELFT>
640 StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
641 return getELFRelocationTypeName(EF.getHeader()->e_machine, Type);
644 template <class ELFT>
645 std::error_code ELFObjectFile<ELFT>::getRelocationTypeName(
646 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
647 const Elf_Shdr *sec = getRelSection(Rel);
649 switch (sec->sh_type) {
651 return object_error::parse_failed;
653 type = getRel(Rel)->getType(EF.isMips64EL());
656 case ELF::SHT_RELA: {
657 type = getRela(Rel)->getType(EF.isMips64EL());
662 EF.getRelocationTypeName(type, Result);
663 return std::error_code();
666 template <class ELFT>
668 ELFObjectFile<ELFT>::getRelocationAddend(DataRefImpl Rel) const {
669 if (getRelSection(Rel)->sh_type != ELF::SHT_RELA)
670 return object_error::parse_failed;
671 return (int64_t)getRela(Rel)->r_addend;
674 template <class ELFT>
675 bool ELFObjectFile<ELFT>::hasRelocationAddend(DataRefImpl Rel) const {
676 return getRelSection(Rel)->sh_type == ELF::SHT_RELA;
679 template <class ELFT>
680 const typename ELFFile<ELFT>::Elf_Sym *
681 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
682 return &*toELFSymIter(Symb);
685 template <class ELFT>
686 const typename ELFObjectFile<ELFT>::Elf_Rel *
687 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
688 return EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
691 template <class ELFT>
692 const typename ELFObjectFile<ELFT>::Elf_Rela *
693 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
694 return EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
697 template <class ELFT>
698 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBufferRef Object, std::error_code &EC)
700 getELFType(static_cast<endianness>(ELFT::TargetEndianness) ==
704 EF(Data.getBuffer(), EC) {}
706 template <class ELFT>
707 basic_symbol_iterator ELFObjectFile<ELFT>::symbol_begin_impl() const {
708 return basic_symbol_iterator(SymbolRef(toDRI(EF.begin_symbols()), this));
711 template <class ELFT>
712 basic_symbol_iterator ELFObjectFile<ELFT>::symbol_end_impl() const {
713 return basic_symbol_iterator(SymbolRef(toDRI(EF.end_symbols()), this));
716 template <class ELFT>
717 symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
718 return symbol_iterator(SymbolRef(toDRI(EF.begin_dynamic_symbols()), this));
721 template <class ELFT>
722 symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_end() const {
723 return symbol_iterator(SymbolRef(toDRI(EF.end_dynamic_symbols()), this));
726 template <class ELFT>
727 section_iterator ELFObjectFile<ELFT>::section_begin() const {
728 return section_iterator(SectionRef(toDRI(EF.begin_sections()), this));
731 template <class ELFT>
732 section_iterator ELFObjectFile<ELFT>::section_end() const {
733 return section_iterator(SectionRef(toDRI(EF.end_sections()), this));
736 template <class ELFT>
737 StringRef ELFObjectFile<ELFT>::getLoadName() const {
738 Elf_Dyn_Iter DI = EF.begin_dynamic_table();
739 Elf_Dyn_Iter DE = EF.end_dynamic_table();
741 while (DI != DE && DI->getTag() != ELF::DT_SONAME)
745 return EF.getDynamicString(DI->getVal());
749 template <class ELFT>
750 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
751 return ELFT::Is64Bits ? 8 : 4;
754 template <class ELFT>
755 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
756 bool IsLittleEndian = ELFT::TargetEndianness == support::little;
757 switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
758 case ELF::ELFCLASS32:
759 switch (EF.getHeader()->e_machine) {
763 return "ELF32-x86-64";
765 return (IsLittleEndian ? "ELF32-arm-little" : "ELF32-arm-big");
766 case ELF::EM_HEXAGON:
767 return "ELF32-hexagon";
773 case ELF::EM_SPARC32PLUS:
774 return "ELF32-sparc";
776 return "ELF32-unknown";
778 case ELF::ELFCLASS64:
779 switch (EF.getHeader()->e_machine) {
783 return "ELF64-x86-64";
784 case ELF::EM_AARCH64:
785 return (IsLittleEndian ? "ELF64-aarch64-little" : "ELF64-aarch64-big");
787 return "ELF64-ppc64";
790 case ELF::EM_SPARCV9:
791 return "ELF64-sparc";
795 return "ELF64-unknown";
798 // FIXME: Proper error handling.
799 report_fatal_error("Invalid ELFCLASS!");
803 template <class ELFT>
804 unsigned ELFObjectFile<ELFT>::getArch() const {
805 bool IsLittleEndian = ELFT::TargetEndianness == support::little;
806 switch (EF.getHeader()->e_machine) {
810 return Triple::x86_64;
811 case ELF::EM_AARCH64:
812 return Triple::aarch64;
815 case ELF::EM_HEXAGON:
816 return Triple::hexagon;
818 switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
819 case ELF::ELFCLASS32:
820 return IsLittleEndian ? Triple::mipsel : Triple::mips;
821 case ELF::ELFCLASS64:
822 return IsLittleEndian ? Triple::mips64el : Triple::mips64;
824 report_fatal_error("Invalid ELFCLASS!");
829 return IsLittleEndian ? Triple::ppc64le : Triple::ppc64;
831 return Triple::systemz;
834 case ELF::EM_SPARC32PLUS:
835 return IsLittleEndian ? Triple::sparcel : Triple::sparc;
836 case ELF::EM_SPARCV9:
837 return Triple::sparcv9;
840 return Triple::UnknownArch;
844 template <class ELFT>
845 std::pair<symbol_iterator, symbol_iterator>
846 ELFObjectFile<ELFT>::getELFDynamicSymbolIterators() const {
847 return std::make_pair(dynamic_symbol_begin(), dynamic_symbol_end());
850 template <class ELFT> bool ELFObjectFile<ELFT>::isRelocatableObject() const {
851 return EF.getHeader()->e_type == ELF::ET_REL;
854 inline std::pair<symbol_iterator, symbol_iterator>
855 getELFDynamicSymbolIterators(const SymbolicFile *Obj) {
856 return cast<ELFObjectFileBase>(Obj)->getELFDynamicSymbolIterators();