1 //===- ELF.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_ELF_H
15 #define LLVM_OBJECT_ELF_H
17 #include "llvm/ADT/SmallVector.h"
18 #include "llvm/ADT/StringSwitch.h"
19 #include "llvm/ADT/Triple.h"
20 #include "llvm/ADT/DenseMap.h"
21 #include "llvm/ADT/PointerIntPair.h"
22 #include "llvm/Object/ObjectFile.h"
23 #include "llvm/Support/Casting.h"
24 #include "llvm/Support/ELF.h"
25 #include "llvm/Support/Endian.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/MemoryBuffer.h"
28 #include "llvm/Support/raw_ostream.h"
36 // Subclasses of ELFObjectFile may need this for template instantiation
37 inline std::pair<unsigned char, unsigned char>
38 getElfArchType(MemoryBuffer *Object) {
39 if (Object->getBufferSize() < ELF::EI_NIDENT)
40 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
41 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
42 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
45 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
46 template<support::endianness target_endianness>
47 struct ELFDataTypeTypedefHelperCommon {
48 typedef support::detail::packed_endian_specific_integral
49 <uint16_t, target_endianness, support::aligned> Elf_Half;
50 typedef support::detail::packed_endian_specific_integral
51 <uint32_t, target_endianness, support::aligned> Elf_Word;
52 typedef support::detail::packed_endian_specific_integral
53 <int32_t, target_endianness, support::aligned> Elf_Sword;
54 typedef support::detail::packed_endian_specific_integral
55 <uint64_t, target_endianness, support::aligned> Elf_Xword;
56 typedef support::detail::packed_endian_specific_integral
57 <int64_t, target_endianness, support::aligned> Elf_Sxword;
60 template<support::endianness target_endianness, bool is64Bits>
61 struct ELFDataTypeTypedefHelper;
64 template<support::endianness target_endianness>
65 struct ELFDataTypeTypedefHelper<target_endianness, false>
66 : ELFDataTypeTypedefHelperCommon<target_endianness> {
67 typedef uint32_t value_type;
68 typedef support::detail::packed_endian_specific_integral
69 <value_type, target_endianness, support::aligned> Elf_Addr;
70 typedef support::detail::packed_endian_specific_integral
71 <value_type, target_endianness, support::aligned> Elf_Off;
75 template<support::endianness target_endianness>
76 struct ELFDataTypeTypedefHelper<target_endianness, true>
77 : ELFDataTypeTypedefHelperCommon<target_endianness>{
78 typedef uint64_t value_type;
79 typedef support::detail::packed_endian_specific_integral
80 <value_type, target_endianness, support::aligned> Elf_Addr;
81 typedef support::detail::packed_endian_specific_integral
82 <value_type, target_endianness, support::aligned> Elf_Off;
85 // I really don't like doing this, but the alternative is copypasta.
86 #define LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits) \
88 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Addr Elf_Addr; \
90 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Off Elf_Off; \
92 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Half Elf_Half; \
94 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Word Elf_Word; \
96 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sword Elf_Sword; \
98 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Xword Elf_Xword; \
100 ELFDataTypeTypedefHelper<target_endianness, is64Bits>::Elf_Sxword Elf_Sxword;
103 template<support::endianness target_endianness, bool is64Bits>
104 struct Elf_Shdr_Base;
106 template<support::endianness target_endianness>
107 struct Elf_Shdr_Base<target_endianness, false> {
108 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
109 Elf_Word sh_name; // Section name (index into string table)
110 Elf_Word sh_type; // Section type (SHT_*)
111 Elf_Word sh_flags; // Section flags (SHF_*)
112 Elf_Addr sh_addr; // Address where section is to be loaded
113 Elf_Off sh_offset; // File offset of section data, in bytes
114 Elf_Word sh_size; // Size of section, in bytes
115 Elf_Word sh_link; // Section type-specific header table index link
116 Elf_Word sh_info; // Section type-specific extra information
117 Elf_Word sh_addralign;// Section address alignment
118 Elf_Word sh_entsize; // Size of records contained within the section
121 template<support::endianness target_endianness>
122 struct Elf_Shdr_Base<target_endianness, true> {
123 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
124 Elf_Word sh_name; // Section name (index into string table)
125 Elf_Word sh_type; // Section type (SHT_*)
126 Elf_Xword sh_flags; // Section flags (SHF_*)
127 Elf_Addr sh_addr; // Address where section is to be loaded
128 Elf_Off sh_offset; // File offset of section data, in bytes
129 Elf_Xword sh_size; // Size of section, in bytes
130 Elf_Word sh_link; // Section type-specific header table index link
131 Elf_Word sh_info; // Section type-specific extra information
132 Elf_Xword sh_addralign;// Section address alignment
133 Elf_Xword sh_entsize; // Size of records contained within the section
136 template<support::endianness target_endianness, bool is64Bits>
137 struct Elf_Shdr_Impl : Elf_Shdr_Base<target_endianness, is64Bits> {
138 using Elf_Shdr_Base<target_endianness, is64Bits>::sh_entsize;
139 using Elf_Shdr_Base<target_endianness, is64Bits>::sh_size;
141 /// @brief Get the number of entities this section contains if it has any.
142 unsigned getEntityCount() const {
145 return sh_size / sh_entsize;
149 template<support::endianness target_endianness, bool is64Bits>
152 template<support::endianness target_endianness>
153 struct Elf_Sym_Base<target_endianness, false> {
154 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
155 Elf_Word st_name; // Symbol name (index into string table)
156 Elf_Addr st_value; // Value or address associated with the symbol
157 Elf_Word st_size; // Size of the symbol
158 unsigned char st_info; // Symbol's type and binding attributes
159 unsigned char st_other; // Must be zero; reserved
160 Elf_Half st_shndx; // Which section (header table index) it's defined in
163 template<support::endianness target_endianness>
164 struct Elf_Sym_Base<target_endianness, true> {
165 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
166 Elf_Word st_name; // Symbol name (index into string table)
167 unsigned char st_info; // Symbol's type and binding attributes
168 unsigned char st_other; // Must be zero; reserved
169 Elf_Half st_shndx; // Which section (header table index) it's defined in
170 Elf_Addr st_value; // Value or address associated with the symbol
171 Elf_Xword st_size; // Size of the symbol
174 template<support::endianness target_endianness, bool is64Bits>
175 struct Elf_Sym_Impl : Elf_Sym_Base<target_endianness, is64Bits> {
176 using Elf_Sym_Base<target_endianness, is64Bits>::st_info;
178 // These accessors and mutators correspond to the ELF32_ST_BIND,
179 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
180 unsigned char getBinding() const { return st_info >> 4; }
181 unsigned char getType() const { return st_info & 0x0f; }
182 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
183 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
184 void setBindingAndType(unsigned char b, unsigned char t) {
185 st_info = (b << 4) + (t & 0x0f);
189 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
190 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
191 template<support::endianness target_endianness, bool is64Bits>
192 struct Elf_Versym_Impl {
193 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
194 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
197 template<support::endianness target_endianness, bool is64Bits>
198 struct Elf_Verdaux_Impl;
200 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
201 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
202 template<support::endianness target_endianness, bool is64Bits>
203 struct Elf_Verdef_Impl {
204 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
205 typedef Elf_Verdaux_Impl<target_endianness, is64Bits> Elf_Verdaux;
206 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
207 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
208 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
209 Elf_Half vd_cnt; // Number of Verdaux entries
210 Elf_Word vd_hash; // Hash of name
211 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
212 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
214 /// Get the first Verdaux entry for this Verdef.
215 const Elf_Verdaux *getAux() const {
216 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
220 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
221 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
222 template<support::endianness target_endianness, bool is64Bits>
223 struct Elf_Verdaux_Impl {
224 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
225 Elf_Word vda_name; // Version name (offset in string table)
226 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
229 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
230 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
231 template<support::endianness target_endianness, bool is64Bits>
232 struct Elf_Verneed_Impl {
233 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
234 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
235 Elf_Half vn_cnt; // Number of associated Vernaux entries
236 Elf_Word vn_file; // Library name (string table offset)
237 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
238 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
241 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
242 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
243 template<support::endianness target_endianness, bool is64Bits>
244 struct Elf_Vernaux_Impl {
245 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
246 Elf_Word vna_hash; // Hash of dependency name
247 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
248 Elf_Half vna_other; // Version index, used in .gnu.version entries
249 Elf_Word vna_name; // Dependency name
250 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
253 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
254 /// table section (.dynamic) look like.
255 template<support::endianness target_endianness, bool is64Bits>
258 template<support::endianness target_endianness>
259 struct Elf_Dyn_Base<target_endianness, false> {
260 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
268 template<support::endianness target_endianness>
269 struct Elf_Dyn_Base<target_endianness, true> {
270 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
278 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
279 template<support::endianness target_endianness, bool is64Bits>
280 struct Elf_Dyn_Impl : Elf_Dyn_Base<target_endianness, is64Bits> {
281 using Elf_Dyn_Base<target_endianness, is64Bits>::d_tag;
282 using Elf_Dyn_Base<target_endianness, is64Bits>::d_un;
283 int64_t getTag() const { return d_tag; }
284 uint64_t getVal() const { return d_un.d_val; }
285 uint64_t getPtr() const { return d_un.ptr; }
288 template<support::endianness target_endianness, bool is64Bits>
291 // DynRefImpl: Reference to an entry in the dynamic table
292 // This is an ELF-specific interface.
293 template<support::endianness target_endianness, bool is64Bits>
295 typedef Elf_Dyn_Impl<target_endianness, is64Bits> Elf_Dyn;
296 typedef ELFObjectFile<target_endianness, is64Bits> OwningType;
298 DataRefImpl DynPimpl;
299 const OwningType *OwningObject;
302 DynRefImpl() : OwningObject(NULL) { }
304 DynRefImpl(DataRefImpl DynP, const OwningType *Owner);
306 bool operator==(const DynRefImpl &Other) const;
307 bool operator <(const DynRefImpl &Other) const;
309 error_code getNext(DynRefImpl &Result) const;
310 int64_t getTag() const;
311 uint64_t getVal() const;
312 uint64_t getPtr() const;
314 DataRefImpl getRawDataRefImpl() const;
317 // Elf_Rel: Elf Relocation
318 template<support::endianness target_endianness, bool is64Bits, bool isRela>
321 template<support::endianness target_endianness>
322 struct Elf_Rel_Base<target_endianness, false, false> {
323 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
324 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
325 Elf_Word r_info; // Symbol table index and type of relocation to apply
328 template<support::endianness target_endianness>
329 struct Elf_Rel_Base<target_endianness, true, false> {
330 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
331 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
332 Elf_Xword r_info; // Symbol table index and type of relocation to apply
335 template<support::endianness target_endianness>
336 struct Elf_Rel_Base<target_endianness, false, true> {
337 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
338 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
339 Elf_Word r_info; // Symbol table index and type of relocation to apply
340 Elf_Sword r_addend; // Compute value for relocatable field by adding this
343 template<support::endianness target_endianness>
344 struct Elf_Rel_Base<target_endianness, true, true> {
345 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
346 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
347 Elf_Xword r_info; // Symbol table index and type of relocation to apply
348 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
351 template<support::endianness target_endianness, bool is64Bits, bool isRela>
354 template<support::endianness target_endianness, bool isRela>
355 struct Elf_Rel_Impl<target_endianness, true, isRela>
356 : Elf_Rel_Base<target_endianness, true, isRela> {
357 using Elf_Rel_Base<target_endianness, true, isRela>::r_info;
358 LLVM_ELF_IMPORT_TYPES(target_endianness, true)
360 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
361 // and ELF64_R_INFO macros defined in the ELF specification:
362 uint64_t getSymbol() const { return (r_info >> 32); }
363 unsigned char getType() const {
364 return (unsigned char) (r_info & 0xffffffffL);
366 void setSymbol(uint64_t s) { setSymbolAndType(s, getType()); }
367 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
368 void setSymbolAndType(uint64_t s, unsigned char t) {
369 r_info = (s << 32) + (t&0xffffffffL);
373 template<support::endianness target_endianness, bool isRela>
374 struct Elf_Rel_Impl<target_endianness, false, isRela>
375 : Elf_Rel_Base<target_endianness, false, isRela> {
376 using Elf_Rel_Base<target_endianness, false, isRela>::r_info;
377 LLVM_ELF_IMPORT_TYPES(target_endianness, false)
379 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
380 // and ELF32_R_INFO macros defined in the ELF specification:
381 uint32_t getSymbol() const { return (r_info >> 8); }
382 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
383 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
384 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
385 void setSymbolAndType(uint32_t s, unsigned char t) {
386 r_info = (s << 8) + t;
391 template<support::endianness target_endianness, bool is64Bits>
392 class ELFObjectFile : public ObjectFile {
393 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
395 typedef Elf_Shdr_Impl<target_endianness, is64Bits> Elf_Shdr;
396 typedef Elf_Sym_Impl<target_endianness, is64Bits> Elf_Sym;
397 typedef Elf_Dyn_Impl<target_endianness, is64Bits> Elf_Dyn;
398 typedef Elf_Rel_Impl<target_endianness, is64Bits, false> Elf_Rel;
399 typedef Elf_Rel_Impl<target_endianness, is64Bits, true> Elf_Rela;
400 typedef Elf_Verdef_Impl<target_endianness, is64Bits> Elf_Verdef;
401 typedef Elf_Verdaux_Impl<target_endianness, is64Bits> Elf_Verdaux;
402 typedef Elf_Verneed_Impl<target_endianness, is64Bits> Elf_Verneed;
403 typedef Elf_Vernaux_Impl<target_endianness, is64Bits> Elf_Vernaux;
404 typedef Elf_Versym_Impl<target_endianness, is64Bits> Elf_Versym;
405 typedef DynRefImpl<target_endianness, is64Bits> DynRef;
406 typedef content_iterator<DynRef> dyn_iterator;
410 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
411 Elf_Half e_type; // Type of file (see ET_*)
412 Elf_Half e_machine; // Required architecture for this file (see EM_*)
413 Elf_Word e_version; // Must be equal to 1
414 Elf_Addr e_entry; // Address to jump to in order to start program
415 Elf_Off e_phoff; // Program header table's file offset, in bytes
416 Elf_Off e_shoff; // Section header table's file offset, in bytes
417 Elf_Word e_flags; // Processor-specific flags
418 Elf_Half e_ehsize; // Size of ELF header, in bytes
419 Elf_Half e_phentsize;// Size of an entry in the program header table
420 Elf_Half e_phnum; // Number of entries in the program header table
421 Elf_Half e_shentsize;// Size of an entry in the section header table
422 Elf_Half e_shnum; // Number of entries in the section header table
423 Elf_Half e_shstrndx; // Section header table index of section name
425 bool checkMagic() const {
426 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
428 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
429 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
431 // This flag is used for classof, to distinguish ELFObjectFile from
432 // its subclass. If more subclasses will be created, this flag will
433 // have to become an enum.
434 bool isDyldELFObject;
437 typedef SmallVector<const Elf_Shdr*, 1> Sections_t;
438 typedef DenseMap<unsigned, unsigned> IndexMap_t;
439 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
441 const Elf_Ehdr *Header;
442 const Elf_Shdr *SectionHeaderTable;
443 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
444 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
445 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
447 // SymbolTableSections[0] always points to the dynamic string table section
448 // header, or NULL if there is no dynamic string table.
449 Sections_t SymbolTableSections;
450 IndexMap_t SymbolTableSectionsIndexMap;
451 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
453 const Elf_Shdr *dot_dynamic_sec; // .dynamic
454 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
455 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
456 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
458 // Pointer to SONAME entry in dynamic string table
459 // This is set the first time getLoadName is called.
460 mutable const char *dt_soname;
462 // Records for each version index the corresponding Verdef or Vernaux entry.
463 // This is filled the first time LoadVersionMap() is called.
464 class VersionMapEntry : public PointerIntPair<const void*, 1> {
466 // If the integer is 0, this is an Elf_Verdef*.
467 // If the integer is 1, this is an Elf_Vernaux*.
468 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
469 VersionMapEntry(const Elf_Verdef *verdef)
470 : PointerIntPair<const void*, 1>(verdef, 0) { }
471 VersionMapEntry(const Elf_Vernaux *vernaux)
472 : PointerIntPair<const void*, 1>(vernaux, 1) { }
473 bool isNull() const { return getPointer() == NULL; }
474 bool isVerdef() const { return !isNull() && getInt() == 0; }
475 bool isVernaux() const { return !isNull() && getInt() == 1; }
476 const Elf_Verdef *getVerdef() const {
477 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
479 const Elf_Vernaux *getVernaux() const {
480 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
483 mutable SmallVector<VersionMapEntry, 16> VersionMap;
484 void LoadVersionDefs(const Elf_Shdr *sec) const;
485 void LoadVersionNeeds(const Elf_Shdr *ec) const;
486 void LoadVersionMap() const;
488 /// @brief Map sections to an array of relocation sections that reference
489 /// them sorted by section index.
490 RelocMap_t SectionRelocMap;
492 /// @brief Get the relocation section that contains \a Rel.
493 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
494 return getSection(Rel.w.b);
497 bool isRelocationHasAddend(DataRefImpl Rel) const;
499 const T *getEntry(uint16_t Section, uint32_t Entry) const;
501 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
502 const Elf_Shdr *getSection(DataRefImpl index) const;
503 const Elf_Shdr *getSection(uint32_t index) const;
504 const Elf_Rel *getRel(DataRefImpl Rel) const;
505 const Elf_Rela *getRela(DataRefImpl Rela) const;
506 const char *getString(uint32_t section, uint32_t offset) const;
507 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
508 error_code getSymbolName(const Elf_Shdr *section,
510 StringRef &Res) const;
511 error_code getSymbolVersion(const Elf_Shdr *section,
514 bool &IsDefault) const;
515 void VerifyStrTab(const Elf_Shdr *sh) const;
518 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
519 void validateSymbol(DataRefImpl Symb) const;
522 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
523 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
524 bool &IsDefault) const;
526 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
527 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
528 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
529 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
530 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
531 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
532 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
533 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
534 virtual error_code getSymbolSection(DataRefImpl Symb,
535 section_iterator &Res) const;
537 friend class DynRefImpl<target_endianness, is64Bits>;
538 virtual error_code getDynNext(DataRefImpl DynData, DynRef &Result) const;
540 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
541 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
543 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
544 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
545 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
546 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
547 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
548 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
549 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
550 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
551 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
552 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
554 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
555 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
556 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
558 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
559 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
561 virtual error_code getRelocationNext(DataRefImpl Rel,
562 RelocationRef &Res) const;
563 virtual error_code getRelocationAddress(DataRefImpl Rel,
564 uint64_t &Res) const;
565 virtual error_code getRelocationOffset(DataRefImpl Rel,
566 uint64_t &Res) const;
567 virtual error_code getRelocationSymbol(DataRefImpl Rel,
568 SymbolRef &Res) const;
569 virtual error_code getRelocationType(DataRefImpl Rel,
570 uint64_t &Res) const;
571 virtual error_code getRelocationTypeName(DataRefImpl Rel,
572 SmallVectorImpl<char> &Result) const;
573 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
575 virtual error_code getRelocationValueString(DataRefImpl Rel,
576 SmallVectorImpl<char> &Result) const;
579 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
580 virtual symbol_iterator begin_symbols() const;
581 virtual symbol_iterator end_symbols() const;
583 virtual symbol_iterator begin_dynamic_symbols() const;
584 virtual symbol_iterator end_dynamic_symbols() const;
586 virtual section_iterator begin_sections() const;
587 virtual section_iterator end_sections() const;
589 virtual library_iterator begin_libraries_needed() const;
590 virtual library_iterator end_libraries_needed() const;
592 virtual dyn_iterator begin_dynamic_table() const;
593 virtual dyn_iterator end_dynamic_table() const;
595 virtual uint8_t getBytesInAddress() const;
596 virtual StringRef getFileFormatName() const;
597 virtual StringRef getObjectType() const { return "ELF"; }
598 virtual unsigned getArch() const;
599 virtual StringRef getLoadName() const;
601 uint64_t getNumSections() const;
602 uint64_t getStringTableIndex() const;
603 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
604 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
606 // Methods for type inquiry through isa, cast, and dyn_cast
607 bool isDyldType() const { return isDyldELFObject; }
608 static inline bool classof(const Binary *v) {
609 return v->getType() == getELFType(target_endianness == support::little,
612 static inline bool classof(const ELFObjectFile *v) { return true; }
615 // Iterate through the version definitions, and place each Elf_Verdef
616 // in the VersionMap according to its index.
617 template<support::endianness target_endianness, bool is64Bits>
618 void ELFObjectFile<target_endianness, is64Bits>::
619 LoadVersionDefs(const Elf_Shdr *sec) const {
620 unsigned vd_size = sec->sh_size; // Size of section in bytes
621 unsigned vd_count = sec->sh_info; // Number of Verdef entries
622 const char *sec_start = (const char*)base() + sec->sh_offset;
623 const char *sec_end = sec_start + vd_size;
624 // The first Verdef entry is at the start of the section.
625 const char *p = sec_start;
626 for (unsigned i = 0; i < vd_count; i++) {
627 if (p + sizeof(Elf_Verdef) > sec_end)
628 report_fatal_error("Section ended unexpectedly while scanning "
629 "version definitions.");
630 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
631 if (vd->vd_version != ELF::VER_DEF_CURRENT)
632 report_fatal_error("Unexpected verdef version");
633 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
634 if (index >= VersionMap.size())
635 VersionMap.resize(index+1);
636 VersionMap[index] = VersionMapEntry(vd);
641 // Iterate through the versions needed section, and place each Elf_Vernaux
642 // in the VersionMap according to its index.
643 template<support::endianness target_endianness, bool is64Bits>
644 void ELFObjectFile<target_endianness, is64Bits>::
645 LoadVersionNeeds(const Elf_Shdr *sec) const {
646 unsigned vn_size = sec->sh_size; // Size of section in bytes
647 unsigned vn_count = sec->sh_info; // Number of Verneed entries
648 const char *sec_start = (const char*)base() + sec->sh_offset;
649 const char *sec_end = sec_start + vn_size;
650 // The first Verneed entry is at the start of the section.
651 const char *p = sec_start;
652 for (unsigned i = 0; i < vn_count; i++) {
653 if (p + sizeof(Elf_Verneed) > sec_end)
654 report_fatal_error("Section ended unexpectedly while scanning "
655 "version needed records.");
656 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
657 if (vn->vn_version != ELF::VER_NEED_CURRENT)
658 report_fatal_error("Unexpected verneed version");
659 // Iterate through the Vernaux entries
660 const char *paux = p + vn->vn_aux;
661 for (unsigned j = 0; j < vn->vn_cnt; j++) {
662 if (paux + sizeof(Elf_Vernaux) > sec_end)
663 report_fatal_error("Section ended unexpected while scanning auxiliary "
664 "version needed records.");
665 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
666 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
667 if (index >= VersionMap.size())
668 VersionMap.resize(index+1);
669 VersionMap[index] = VersionMapEntry(vna);
670 paux += vna->vna_next;
676 template<support::endianness target_endianness, bool is64Bits>
677 void ELFObjectFile<target_endianness, is64Bits>::LoadVersionMap() const {
678 // If there is no dynamic symtab or version table, there is nothing to do.
679 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
682 // Has the VersionMap already been loaded?
683 if (VersionMap.size() > 0)
686 // The first two version indexes are reserved.
687 // Index 0 is LOCAL, index 1 is GLOBAL.
688 VersionMap.push_back(VersionMapEntry());
689 VersionMap.push_back(VersionMapEntry());
691 if (dot_gnu_version_d_sec)
692 LoadVersionDefs(dot_gnu_version_d_sec);
694 if (dot_gnu_version_r_sec)
695 LoadVersionNeeds(dot_gnu_version_r_sec);
698 template<support::endianness target_endianness, bool is64Bits>
699 void ELFObjectFile<target_endianness, is64Bits>
700 ::validateSymbol(DataRefImpl Symb) const {
701 const Elf_Sym *symb = getSymbol(Symb);
702 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
703 // FIXME: We really need to do proper error handling in the case of an invalid
704 // input file. Because we don't use exceptions, I think we'll just pass
705 // an error object around.
707 && SymbolTableSection
708 && symb >= (const Elf_Sym*)(base()
709 + SymbolTableSection->sh_offset)
710 && symb < (const Elf_Sym*)(base()
711 + SymbolTableSection->sh_offset
712 + SymbolTableSection->sh_size)))
713 // FIXME: Proper error handling.
714 report_fatal_error("Symb must point to a valid symbol!");
717 template<support::endianness target_endianness, bool is64Bits>
718 error_code ELFObjectFile<target_endianness, is64Bits>
719 ::getSymbolNext(DataRefImpl Symb,
720 SymbolRef &Result) const {
721 validateSymbol(Symb);
722 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
725 // Check to see if we are at the end of this symbol table.
726 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
727 // We are at the end. If there are other symbol tables, jump to them.
728 // If the symbol table is .dynsym, we are iterating dynamic symbols,
729 // and there is only one table of these.
732 Symb.d.a = 1; // The 0th symbol in ELF is fake.
734 // Otherwise return the terminator.
735 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
736 Symb.d.a = std::numeric_limits<uint32_t>::max();
737 Symb.d.b = std::numeric_limits<uint32_t>::max();
741 Result = SymbolRef(Symb, this);
742 return object_error::success;
745 template<support::endianness target_endianness, bool is64Bits>
746 error_code ELFObjectFile<target_endianness, is64Bits>
747 ::getSymbolName(DataRefImpl Symb,
748 StringRef &Result) const {
749 validateSymbol(Symb);
750 const Elf_Sym *symb = getSymbol(Symb);
751 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
754 template<support::endianness target_endianness, bool is64Bits>
755 error_code ELFObjectFile<target_endianness, is64Bits>
756 ::getSymbolVersion(SymbolRef SymRef,
758 bool &IsDefault) const {
759 DataRefImpl Symb = SymRef.getRawDataRefImpl();
760 validateSymbol(Symb);
761 const Elf_Sym *symb = getSymbol(Symb);
762 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
766 template<support::endianness target_endianness, bool is64Bits>
767 ELF::Elf64_Word ELFObjectFile<target_endianness, is64Bits>
768 ::getSymbolTableIndex(const Elf_Sym *symb) const {
769 if (symb->st_shndx == ELF::SHN_XINDEX)
770 return ExtendedSymbolTable.lookup(symb);
771 return symb->st_shndx;
774 template<support::endianness target_endianness, bool is64Bits>
775 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
776 ELFObjectFile<target_endianness, is64Bits>
777 ::getSection(const Elf_Sym *symb) const {
778 if (symb->st_shndx == ELF::SHN_XINDEX)
779 return getSection(ExtendedSymbolTable.lookup(symb));
780 if (symb->st_shndx >= ELF::SHN_LORESERVE)
782 return getSection(symb->st_shndx);
785 template<support::endianness target_endianness, bool is64Bits>
786 error_code ELFObjectFile<target_endianness, is64Bits>
787 ::getSymbolFileOffset(DataRefImpl Symb,
788 uint64_t &Result) const {
789 validateSymbol(Symb);
790 const Elf_Sym *symb = getSymbol(Symb);
791 const Elf_Shdr *Section;
792 switch (getSymbolTableIndex(symb)) {
793 case ELF::SHN_COMMON:
794 // Unintialized symbols have no offset in the object file
796 Result = UnknownAddressOrSize;
797 return object_error::success;
799 Result = symb->st_value;
800 return object_error::success;
801 default: Section = getSection(symb);
804 switch (symb->getType()) {
805 case ELF::STT_SECTION:
806 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
807 return object_error::success;
809 case ELF::STT_OBJECT:
810 case ELF::STT_NOTYPE:
811 Result = symb->st_value +
812 (Section ? Section->sh_offset : 0);
813 return object_error::success;
815 Result = UnknownAddressOrSize;
816 return object_error::success;
820 template<support::endianness target_endianness, bool is64Bits>
821 error_code ELFObjectFile<target_endianness, is64Bits>
822 ::getSymbolAddress(DataRefImpl Symb,
823 uint64_t &Result) const {
824 validateSymbol(Symb);
825 const Elf_Sym *symb = getSymbol(Symb);
826 const Elf_Shdr *Section;
827 switch (getSymbolTableIndex(symb)) {
828 case ELF::SHN_COMMON:
830 Result = UnknownAddressOrSize;
831 return object_error::success;
833 Result = symb->st_value;
834 return object_error::success;
835 default: Section = getSection(symb);
838 switch (symb->getType()) {
839 case ELF::STT_SECTION:
840 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
841 return object_error::success;
843 case ELF::STT_OBJECT:
844 case ELF::STT_NOTYPE:
845 Result = symb->st_value + (Section ? Section->sh_addr : 0);
846 return object_error::success;
848 Result = UnknownAddressOrSize;
849 return object_error::success;
853 template<support::endianness target_endianness, bool is64Bits>
854 error_code ELFObjectFile<target_endianness, is64Bits>
855 ::getSymbolSize(DataRefImpl Symb,
856 uint64_t &Result) const {
857 validateSymbol(Symb);
858 const Elf_Sym *symb = getSymbol(Symb);
859 if (symb->st_size == 0)
860 Result = UnknownAddressOrSize;
861 Result = symb->st_size;
862 return object_error::success;
865 template<support::endianness target_endianness, bool is64Bits>
866 error_code ELFObjectFile<target_endianness, is64Bits>
867 ::getSymbolNMTypeChar(DataRefImpl Symb,
868 char &Result) const {
869 validateSymbol(Symb);
870 const Elf_Sym *symb = getSymbol(Symb);
871 const Elf_Shdr *Section = getSection(symb);
876 switch (Section->sh_type) {
877 case ELF::SHT_PROGBITS:
878 case ELF::SHT_DYNAMIC:
879 switch (Section->sh_flags) {
880 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
882 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
885 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
886 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
890 case ELF::SHT_NOBITS: ret = 'b';
894 switch (getSymbolTableIndex(symb)) {
899 case ELF::SHN_ABS: ret = 'a'; break;
900 case ELF::SHN_COMMON: ret = 'c'; break;
903 switch (symb->getBinding()) {
904 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
906 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
909 if (symb->getType() == ELF::STT_OBJECT)
915 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
917 if (error_code ec = getSymbolName(Symb, name))
919 Result = StringSwitch<char>(name)
920 .StartsWith(".debug", 'N')
921 .StartsWith(".note", 'n')
923 return object_error::success;
927 return object_error::success;
930 template<support::endianness target_endianness, bool is64Bits>
931 error_code ELFObjectFile<target_endianness, is64Bits>
932 ::getSymbolType(DataRefImpl Symb,
933 SymbolRef::Type &Result) const {
934 validateSymbol(Symb);
935 const Elf_Sym *symb = getSymbol(Symb);
937 switch (symb->getType()) {
938 case ELF::STT_NOTYPE:
939 Result = SymbolRef::ST_Unknown;
941 case ELF::STT_SECTION:
942 Result = SymbolRef::ST_Debug;
945 Result = SymbolRef::ST_File;
948 Result = SymbolRef::ST_Function;
950 case ELF::STT_OBJECT:
951 case ELF::STT_COMMON:
953 Result = SymbolRef::ST_Data;
956 Result = SymbolRef::ST_Other;
959 return object_error::success;
962 template<support::endianness target_endianness, bool is64Bits>
963 error_code ELFObjectFile<target_endianness, is64Bits>
964 ::getSymbolFlags(DataRefImpl Symb,
965 uint32_t &Result) const {
966 validateSymbol(Symb);
967 const Elf_Sym *symb = getSymbol(Symb);
969 Result = SymbolRef::SF_None;
971 if (symb->getBinding() != ELF::STB_LOCAL)
972 Result |= SymbolRef::SF_Global;
974 if (symb->getBinding() == ELF::STB_WEAK)
975 Result |= SymbolRef::SF_Weak;
977 if (symb->st_shndx == ELF::SHN_ABS)
978 Result |= SymbolRef::SF_Absolute;
980 if (symb->getType() == ELF::STT_FILE ||
981 symb->getType() == ELF::STT_SECTION)
982 Result |= SymbolRef::SF_FormatSpecific;
984 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
985 Result |= SymbolRef::SF_Undefined;
987 if (symb->getType() == ELF::STT_COMMON ||
988 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
989 Result |= SymbolRef::SF_Common;
991 if (symb->getType() == ELF::STT_TLS)
992 Result |= SymbolRef::SF_ThreadLocal;
994 return object_error::success;
997 template<support::endianness target_endianness, bool is64Bits>
998 error_code ELFObjectFile<target_endianness, is64Bits>
999 ::getSymbolSection(DataRefImpl Symb,
1000 section_iterator &Res) const {
1001 validateSymbol(Symb);
1002 const Elf_Sym *symb = getSymbol(Symb);
1003 const Elf_Shdr *sec = getSection(symb);
1005 Res = end_sections();
1008 Sec.p = reinterpret_cast<intptr_t>(sec);
1009 Res = section_iterator(SectionRef(Sec, this));
1011 return object_error::success;
1014 template<support::endianness target_endianness, bool is64Bits>
1015 error_code ELFObjectFile<target_endianness, is64Bits>
1016 ::getSectionNext(DataRefImpl Sec, SectionRef &Result) const {
1017 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1018 sec += Header->e_shentsize;
1019 Sec.p = reinterpret_cast<intptr_t>(sec);
1020 Result = SectionRef(Sec, this);
1021 return object_error::success;
1024 template<support::endianness target_endianness, bool is64Bits>
1025 error_code ELFObjectFile<target_endianness, is64Bits>
1026 ::getSectionName(DataRefImpl Sec,
1027 StringRef &Result) const {
1028 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1029 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1030 return object_error::success;
1033 template<support::endianness target_endianness, bool is64Bits>
1034 error_code ELFObjectFile<target_endianness, is64Bits>
1035 ::getSectionAddress(DataRefImpl Sec,
1036 uint64_t &Result) const {
1037 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1038 Result = sec->sh_addr;
1039 return object_error::success;
1042 template<support::endianness target_endianness, bool is64Bits>
1043 error_code ELFObjectFile<target_endianness, is64Bits>
1044 ::getSectionSize(DataRefImpl Sec,
1045 uint64_t &Result) const {
1046 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1047 Result = sec->sh_size;
1048 return object_error::success;
1051 template<support::endianness target_endianness, bool is64Bits>
1052 error_code ELFObjectFile<target_endianness, is64Bits>
1053 ::getSectionContents(DataRefImpl Sec,
1054 StringRef &Result) const {
1055 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1056 const char *start = (const char*)base() + sec->sh_offset;
1057 Result = StringRef(start, sec->sh_size);
1058 return object_error::success;
1061 template<support::endianness target_endianness, bool is64Bits>
1062 error_code ELFObjectFile<target_endianness, is64Bits>
1063 ::getSectionAlignment(DataRefImpl Sec,
1064 uint64_t &Result) const {
1065 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1066 Result = sec->sh_addralign;
1067 return object_error::success;
1070 template<support::endianness target_endianness, bool is64Bits>
1071 error_code ELFObjectFile<target_endianness, is64Bits>
1072 ::isSectionText(DataRefImpl Sec,
1073 bool &Result) const {
1074 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1075 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1079 return object_error::success;
1082 template<support::endianness target_endianness, bool is64Bits>
1083 error_code ELFObjectFile<target_endianness, is64Bits>
1084 ::isSectionData(DataRefImpl Sec,
1085 bool &Result) const {
1086 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1087 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1088 && sec->sh_type == ELF::SHT_PROGBITS)
1092 return object_error::success;
1095 template<support::endianness target_endianness, bool is64Bits>
1096 error_code ELFObjectFile<target_endianness, is64Bits>
1097 ::isSectionBSS(DataRefImpl Sec,
1098 bool &Result) const {
1099 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1100 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1101 && sec->sh_type == ELF::SHT_NOBITS)
1105 return object_error::success;
1108 template<support::endianness target_endianness, bool is64Bits>
1109 error_code ELFObjectFile<target_endianness, is64Bits>
1110 ::isSectionRequiredForExecution(DataRefImpl Sec,
1111 bool &Result) const {
1112 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1113 if (sec->sh_flags & ELF::SHF_ALLOC)
1117 return object_error::success;
1120 template<support::endianness target_endianness, bool is64Bits>
1121 error_code ELFObjectFile<target_endianness, is64Bits>
1122 ::isSectionVirtual(DataRefImpl Sec,
1123 bool &Result) const {
1124 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1125 if (sec->sh_type == ELF::SHT_NOBITS)
1129 return object_error::success;
1132 template<support::endianness target_endianness, bool is64Bits>
1133 error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRefImpl Sec,
1134 bool &Result) const {
1135 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1136 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1137 // in the object image) and vice versa.
1138 if (sec->sh_flags & ELF::SHT_NOBITS)
1142 return object_error::success;
1145 template<support::endianness target_endianness, bool is64Bits>
1146 error_code ELFObjectFile<target_endianness, is64Bits>
1147 ::sectionContainsSymbol(DataRefImpl Sec,
1149 bool &Result) const {
1150 // FIXME: Unimplemented.
1152 return object_error::success;
1155 template<support::endianness target_endianness, bool is64Bits>
1156 relocation_iterator ELFObjectFile<target_endianness, is64Bits>
1157 ::getSectionRelBegin(DataRefImpl Sec) const {
1158 DataRefImpl RelData;
1159 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1160 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1161 if (sec != 0 && ittr != SectionRelocMap.end()) {
1162 RelData.w.a = getSection(ittr->second[0])->sh_info;
1163 RelData.w.b = ittr->second[0];
1166 return relocation_iterator(RelocationRef(RelData, this));
1169 template<support::endianness target_endianness, bool is64Bits>
1170 relocation_iterator ELFObjectFile<target_endianness, is64Bits>
1171 ::getSectionRelEnd(DataRefImpl Sec) const {
1172 DataRefImpl RelData;
1173 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1174 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1175 if (sec != 0 && ittr != SectionRelocMap.end()) {
1176 // Get the index of the last relocation section for this section.
1177 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1178 const Elf_Shdr *relocsec = getSection(relocsecindex);
1179 RelData.w.a = relocsec->sh_info;
1180 RelData.w.b = relocsecindex;
1181 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1183 return relocation_iterator(RelocationRef(RelData, this));
1187 template<support::endianness target_endianness, bool is64Bits>
1188 error_code ELFObjectFile<target_endianness, is64Bits>
1189 ::getRelocationNext(DataRefImpl Rel,
1190 RelocationRef &Result) const {
1192 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1193 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1194 // We have reached the end of the relocations for this section. See if there
1195 // is another relocation section.
1196 typename RelocMap_t::mapped_type relocseclist =
1197 SectionRelocMap.lookup(getSection(Rel.w.a));
1199 // Do a binary search for the current reloc section index (which must be
1200 // present). Then get the next one.
1201 typename RelocMap_t::mapped_type::const_iterator loc =
1202 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1205 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1206 // to the end iterator.
1207 if (loc != relocseclist.end()) {
1212 Result = RelocationRef(Rel, this);
1213 return object_error::success;
1216 template<support::endianness target_endianness, bool is64Bits>
1217 error_code ELFObjectFile<target_endianness, is64Bits>
1218 ::getRelocationSymbol(DataRefImpl Rel,
1219 SymbolRef &Result) const {
1221 const Elf_Shdr *sec = getSection(Rel.w.b);
1222 switch (sec->sh_type) {
1224 report_fatal_error("Invalid section type in Rel!");
1225 case ELF::SHT_REL : {
1226 symbolIdx = getRel(Rel)->getSymbol();
1229 case ELF::SHT_RELA : {
1230 symbolIdx = getRela(Rel)->getSymbol();
1234 DataRefImpl SymbolData;
1235 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1236 if (it == SymbolTableSectionsIndexMap.end())
1237 report_fatal_error("Relocation symbol table not found!");
1238 SymbolData.d.a = symbolIdx;
1239 SymbolData.d.b = it->second;
1240 Result = SymbolRef(SymbolData, this);
1241 return object_error::success;
1244 template<support::endianness target_endianness, bool is64Bits>
1245 error_code ELFObjectFile<target_endianness, is64Bits>
1246 ::getRelocationAddress(DataRefImpl Rel,
1247 uint64_t &Result) const {
1249 const Elf_Shdr *sec = getSection(Rel.w.b);
1250 switch (sec->sh_type) {
1252 report_fatal_error("Invalid section type in Rel!");
1253 case ELF::SHT_REL : {
1254 offset = getRel(Rel)->r_offset;
1257 case ELF::SHT_RELA : {
1258 offset = getRela(Rel)->r_offset;
1264 return object_error::success;
1267 template<support::endianness target_endianness, bool is64Bits>
1268 error_code ELFObjectFile<target_endianness, is64Bits>
1269 ::getRelocationOffset(DataRefImpl Rel,
1270 uint64_t &Result) const {
1272 const Elf_Shdr *sec = getSection(Rel.w.b);
1273 switch (sec->sh_type) {
1275 report_fatal_error("Invalid section type in Rel!");
1276 case ELF::SHT_REL : {
1277 offset = getRel(Rel)->r_offset;
1280 case ELF::SHT_RELA : {
1281 offset = getRela(Rel)->r_offset;
1286 Result = offset - sec->sh_addr;
1287 return object_error::success;
1290 template<support::endianness target_endianness, bool is64Bits>
1291 error_code ELFObjectFile<target_endianness, is64Bits>
1292 ::getRelocationType(DataRefImpl Rel,
1293 uint64_t &Result) const {
1294 const Elf_Shdr *sec = getSection(Rel.w.b);
1295 switch (sec->sh_type) {
1297 report_fatal_error("Invalid section type in Rel!");
1298 case ELF::SHT_REL : {
1299 Result = getRel(Rel)->getType();
1302 case ELF::SHT_RELA : {
1303 Result = getRela(Rel)->getType();
1307 return object_error::success;
1310 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1311 case ELF::enum: res = #enum; break;
1313 template<support::endianness target_endianness, bool is64Bits>
1314 error_code ELFObjectFile<target_endianness, is64Bits>
1315 ::getRelocationTypeName(DataRefImpl Rel,
1316 SmallVectorImpl<char> &Result) const {
1317 const Elf_Shdr *sec = getSection(Rel.w.b);
1320 switch (sec->sh_type) {
1322 return object_error::parse_failed;
1323 case ELF::SHT_REL : {
1324 type = getRel(Rel)->getType();
1327 case ELF::SHT_RELA : {
1328 type = getRela(Rel)->getType();
1332 switch (Header->e_machine) {
1333 case ELF::EM_X86_64:
1335 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1336 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1337 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1338 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1339 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1340 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1341 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1342 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1343 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1344 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1345 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1346 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1347 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1348 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1349 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1350 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1351 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1352 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1353 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1354 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1355 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1356 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1357 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1358 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1359 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1360 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1361 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1362 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1363 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1364 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1365 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1366 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1373 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1374 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1375 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1376 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1377 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1378 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1379 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1380 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1381 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1382 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1383 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1384 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1385 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1386 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1387 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1388 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1389 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1390 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1391 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1392 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1393 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1394 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1395 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1396 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1397 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1398 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1399 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1400 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1401 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1402 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1403 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1404 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1405 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1406 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1407 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1408 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1409 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1410 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1411 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1412 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1417 case ELF::EM_HEXAGON:
1419 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1420 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1421 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1422 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1423 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1424 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1425 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1426 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1427 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1428 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1429 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1430 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1431 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1432 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1433 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1434 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1435 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1436 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1437 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1438 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1439 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1440 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1441 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1442 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1443 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1444 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1445 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1446 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1447 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1448 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1449 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1450 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1451 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1452 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1453 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1454 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1455 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1456 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1457 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1458 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1459 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1460 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1461 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1462 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1463 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1464 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1465 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1466 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1467 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1468 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1469 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1470 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1471 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1472 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1473 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1474 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1475 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1476 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1477 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1478 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1479 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1480 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1481 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1482 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1483 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1484 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1485 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1486 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1487 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1488 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1489 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1490 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1491 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1492 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
1493 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
1494 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
1495 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
1496 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
1497 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
1498 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
1499 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
1500 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
1501 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
1502 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
1503 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
1504 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
1512 Result.append(res.begin(), res.end());
1513 return object_error::success;
1516 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
1518 template<support::endianness target_endianness, bool is64Bits>
1519 error_code ELFObjectFile<target_endianness, is64Bits>
1520 ::getRelocationAdditionalInfo(DataRefImpl Rel,
1521 int64_t &Result) const {
1522 const Elf_Shdr *sec = getSection(Rel.w.b);
1523 switch (sec->sh_type) {
1525 report_fatal_error("Invalid section type in Rel!");
1526 case ELF::SHT_REL : {
1528 return object_error::success;
1530 case ELF::SHT_RELA : {
1531 Result = getRela(Rel)->r_addend;
1532 return object_error::success;
1537 template<support::endianness target_endianness, bool is64Bits>
1538 error_code ELFObjectFile<target_endianness, is64Bits>
1539 ::getRelocationValueString(DataRefImpl Rel,
1540 SmallVectorImpl<char> &Result) const {
1541 const Elf_Shdr *sec = getSection(Rel.w.b);
1545 uint16_t symbol_index = 0;
1546 switch (sec->sh_type) {
1548 return object_error::parse_failed;
1549 case ELF::SHT_REL : {
1550 type = getRel(Rel)->getType();
1551 symbol_index = getRel(Rel)->getSymbol();
1552 // TODO: Read implicit addend from section data.
1555 case ELF::SHT_RELA : {
1556 type = getRela(Rel)->getType();
1557 symbol_index = getRela(Rel)->getSymbol();
1558 addend = getRela(Rel)->r_addend;
1562 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
1564 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
1566 switch (Header->e_machine) {
1567 case ELF::EM_X86_64:
1569 case ELF::R_X86_64_32S:
1572 case ELF::R_X86_64_PC32: {
1574 raw_string_ostream fmt(fmtbuf);
1575 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
1577 Result.append(fmtbuf.begin(), fmtbuf.end());
1584 case ELF::EM_HEXAGON:
1591 Result.append(res.begin(), res.end());
1592 return object_error::success;
1595 // Verify that the last byte in the string table in a null.
1596 template<support::endianness target_endianness, bool is64Bits>
1597 void ELFObjectFile<target_endianness, is64Bits>
1598 ::VerifyStrTab(const Elf_Shdr *sh) const {
1599 const char *strtab = (const char*)base() + sh->sh_offset;
1600 if (strtab[sh->sh_size - 1] != 0)
1601 // FIXME: Proper error handling.
1602 report_fatal_error("String table must end with a null terminator!");
1605 template<support::endianness target_endianness, bool is64Bits>
1606 ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
1608 : ObjectFile(getELFType(target_endianness == support::little, is64Bits),
1610 , isDyldELFObject(false)
1611 , SectionHeaderTable(0)
1612 , dot_shstrtab_sec(0)
1615 , dot_dynamic_sec(0)
1616 , dot_gnu_version_sec(0)
1617 , dot_gnu_version_r_sec(0)
1618 , dot_gnu_version_d_sec(0)
1622 const uint64_t FileSize = Data->getBufferSize();
1624 if (sizeof(Elf_Ehdr) > FileSize)
1625 // FIXME: Proper error handling.
1626 report_fatal_error("File too short!");
1628 Header = reinterpret_cast<const Elf_Ehdr *>(base());
1630 if (Header->e_shoff == 0)
1633 const uint64_t SectionTableOffset = Header->e_shoff;
1635 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
1636 // FIXME: Proper error handling.
1637 report_fatal_error("Section header table goes past end of file!");
1639 // The getNumSections() call below depends on SectionHeaderTable being set.
1640 SectionHeaderTable =
1641 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
1642 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
1644 if (SectionTableOffset + SectionTableSize > FileSize)
1645 // FIXME: Proper error handling.
1646 report_fatal_error("Section table goes past end of file!");
1648 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
1649 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
1650 const Elf_Shdr* sh = SectionHeaderTable;
1652 // Reserve SymbolTableSections[0] for .dynsym
1653 SymbolTableSections.push_back(NULL);
1655 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
1656 switch (sh->sh_type) {
1657 case ELF::SHT_SYMTAB_SHNDX: {
1658 if (SymbolTableSectionHeaderIndex)
1659 // FIXME: Proper error handling.
1660 report_fatal_error("More than one .symtab_shndx!");
1661 SymbolTableSectionHeaderIndex = sh;
1664 case ELF::SHT_SYMTAB: {
1665 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
1666 SymbolTableSections.push_back(sh);
1669 case ELF::SHT_DYNSYM: {
1670 if (SymbolTableSections[0] != NULL)
1671 // FIXME: Proper error handling.
1672 report_fatal_error("More than one .dynsym!");
1673 SymbolTableSectionsIndexMap[i] = 0;
1674 SymbolTableSections[0] = sh;
1678 case ELF::SHT_RELA: {
1679 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
1682 case ELF::SHT_DYNAMIC: {
1683 if (dot_dynamic_sec != NULL)
1684 // FIXME: Proper error handling.
1685 report_fatal_error("More than one .dynamic!");
1686 dot_dynamic_sec = sh;
1689 case ELF::SHT_GNU_versym: {
1690 if (dot_gnu_version_sec != NULL)
1691 // FIXME: Proper error handling.
1692 report_fatal_error("More than one .gnu.version section!");
1693 dot_gnu_version_sec = sh;
1696 case ELF::SHT_GNU_verdef: {
1697 if (dot_gnu_version_d_sec != NULL)
1698 // FIXME: Proper error handling.
1699 report_fatal_error("More than one .gnu.version_d section!");
1700 dot_gnu_version_d_sec = sh;
1703 case ELF::SHT_GNU_verneed: {
1704 if (dot_gnu_version_r_sec != NULL)
1705 // FIXME: Proper error handling.
1706 report_fatal_error("More than one .gnu.version_r section!");
1707 dot_gnu_version_r_sec = sh;
1714 // Sort section relocation lists by index.
1715 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
1716 e = SectionRelocMap.end(); i != e; ++i) {
1717 std::sort(i->second.begin(), i->second.end());
1720 // Get string table sections.
1721 dot_shstrtab_sec = getSection(getStringTableIndex());
1722 if (dot_shstrtab_sec) {
1723 // Verify that the last byte in the string table in a null.
1724 VerifyStrTab(dot_shstrtab_sec);
1727 // Merge this into the above loop.
1728 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
1729 *e = i + getNumSections() * Header->e_shentsize;
1730 i != e; i += Header->e_shentsize) {
1731 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
1732 if (sh->sh_type == ELF::SHT_STRTAB) {
1733 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
1734 if (SectionName == ".strtab") {
1735 if (dot_strtab_sec != 0)
1736 // FIXME: Proper error handling.
1737 report_fatal_error("Already found section named .strtab!");
1738 dot_strtab_sec = sh;
1739 VerifyStrTab(dot_strtab_sec);
1740 } else if (SectionName == ".dynstr") {
1741 if (dot_dynstr_sec != 0)
1742 // FIXME: Proper error handling.
1743 report_fatal_error("Already found section named .dynstr!");
1744 dot_dynstr_sec = sh;
1745 VerifyStrTab(dot_dynstr_sec);
1750 // Build symbol name side-mapping if there is one.
1751 if (SymbolTableSectionHeaderIndex) {
1752 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
1753 SymbolTableSectionHeaderIndex->sh_offset);
1755 for (symbol_iterator si = begin_symbols(),
1756 se = end_symbols(); si != se; si.increment(ec)) {
1758 report_fatal_error("Fewer extended symbol table entries than symbols!");
1759 if (*ShndxTable != ELF::SHN_UNDEF)
1760 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
1766 template<support::endianness target_endianness, bool is64Bits>
1767 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1768 ::begin_symbols() const {
1769 DataRefImpl SymbolData;
1770 if (SymbolTableSections.size() <= 1) {
1771 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1772 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1774 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
1775 SymbolData.d.b = 1; // The 0th table is .dynsym
1777 return symbol_iterator(SymbolRef(SymbolData, this));
1780 template<support::endianness target_endianness, bool is64Bits>
1781 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1782 ::end_symbols() const {
1783 DataRefImpl SymbolData;
1784 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1785 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1786 return symbol_iterator(SymbolRef(SymbolData, this));
1789 template<support::endianness target_endianness, bool is64Bits>
1790 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1791 ::begin_dynamic_symbols() const {
1792 DataRefImpl SymbolData;
1793 if (SymbolTableSections[0] == NULL) {
1794 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1795 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1797 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
1798 SymbolData.d.b = 0; // The 0th table is .dynsym
1800 return symbol_iterator(SymbolRef(SymbolData, this));
1803 template<support::endianness target_endianness, bool is64Bits>
1804 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1805 ::end_dynamic_symbols() const {
1806 DataRefImpl SymbolData;
1807 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1808 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1809 return symbol_iterator(SymbolRef(SymbolData, this));
1812 template<support::endianness target_endianness, bool is64Bits>
1813 section_iterator ELFObjectFile<target_endianness, is64Bits>
1814 ::begin_sections() const {
1816 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
1817 return section_iterator(SectionRef(ret, this));
1820 template<support::endianness target_endianness, bool is64Bits>
1821 section_iterator ELFObjectFile<target_endianness, is64Bits>
1822 ::end_sections() const {
1824 ret.p = reinterpret_cast<intptr_t>(base()
1826 + (Header->e_shentsize*getNumSections()));
1827 return section_iterator(SectionRef(ret, this));
1830 template<support::endianness target_endianness, bool is64Bits>
1831 typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
1832 ELFObjectFile<target_endianness, is64Bits>::begin_dynamic_table() const {
1833 DataRefImpl DynData;
1834 if (dot_dynamic_sec == NULL || dot_dynamic_sec->sh_size == 0) {
1835 DynData.d.a = std::numeric_limits<uint32_t>::max();
1839 return dyn_iterator(DynRef(DynData, this));
1842 template<support::endianness target_endianness, bool is64Bits>
1843 typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
1844 ELFObjectFile<target_endianness, is64Bits>
1845 ::end_dynamic_table() const {
1846 DataRefImpl DynData;
1847 DynData.d.a = std::numeric_limits<uint32_t>::max();
1848 return dyn_iterator(DynRef(DynData, this));
1851 template<support::endianness target_endianness, bool is64Bits>
1852 error_code ELFObjectFile<target_endianness, is64Bits>
1853 ::getDynNext(DataRefImpl DynData,
1854 DynRef &Result) const {
1857 // Check to see if we are at the end of .dynamic
1858 if (DynData.d.a >= dot_dynamic_sec->getEntityCount()) {
1859 // We are at the end. Return the terminator.
1860 DynData.d.a = std::numeric_limits<uint32_t>::max();
1863 Result = DynRef(DynData, this);
1864 return object_error::success;
1867 template<support::endianness target_endianness, bool is64Bits>
1869 ELFObjectFile<target_endianness, is64Bits>::getLoadName() const {
1871 // Find the DT_SONAME entry
1872 dyn_iterator it = begin_dynamic_table();
1873 dyn_iterator ie = end_dynamic_table();
1876 if (it->getTag() == ELF::DT_SONAME)
1880 report_fatal_error("dynamic table iteration failed");
1883 if (dot_dynstr_sec == NULL)
1884 report_fatal_error("Dynamic string table is missing");
1885 dt_soname = getString(dot_dynstr_sec, it->getVal());
1893 template<support::endianness target_endianness, bool is64Bits>
1894 library_iterator ELFObjectFile<target_endianness, is64Bits>
1895 ::begin_libraries_needed() const {
1896 // Find the first DT_NEEDED entry
1897 dyn_iterator i = begin_dynamic_table();
1898 dyn_iterator e = end_dynamic_table();
1901 if (i->getTag() == ELF::DT_NEEDED)
1905 report_fatal_error("dynamic table iteration failed");
1907 // Use the same DataRefImpl format as DynRef.
1908 return library_iterator(LibraryRef(i->getRawDataRefImpl(), this));
1911 template<support::endianness target_endianness, bool is64Bits>
1912 error_code ELFObjectFile<target_endianness, is64Bits>
1913 ::getLibraryNext(DataRefImpl Data,
1914 LibraryRef &Result) const {
1915 // Use the same DataRefImpl format as DynRef.
1916 dyn_iterator i = dyn_iterator(DynRef(Data, this));
1917 dyn_iterator e = end_dynamic_table();
1919 // Skip the current dynamic table entry.
1923 // TODO: proper error handling
1925 report_fatal_error("dynamic table iteration failed");
1928 // Find the next DT_NEEDED entry.
1930 if (i->getTag() == ELF::DT_NEEDED)
1934 report_fatal_error("dynamic table iteration failed");
1936 Result = LibraryRef(i->getRawDataRefImpl(), this);
1937 return object_error::success;
1940 template<support::endianness target_endianness, bool is64Bits>
1941 error_code ELFObjectFile<target_endianness, is64Bits>
1942 ::getLibraryPath(DataRefImpl Data, StringRef &Res) const {
1943 dyn_iterator i = dyn_iterator(DynRef(Data, this));
1944 if (i == end_dynamic_table())
1945 report_fatal_error("getLibraryPath() called on iterator end");
1947 if (i->getTag() != ELF::DT_NEEDED)
1948 report_fatal_error("Invalid library_iterator");
1950 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
1951 // THis works as long as DT_STRTAB == .dynstr. This is true most of
1952 // the time, but the specification allows exceptions.
1953 // TODO: This should really use DT_STRTAB instead. Doing this requires
1954 // reading the program headers.
1955 if (dot_dynstr_sec == NULL)
1956 report_fatal_error("Dynamic string table is missing");
1957 Res = getString(dot_dynstr_sec, i->getVal());
1958 return object_error::success;
1961 template<support::endianness target_endianness, bool is64Bits>
1962 library_iterator ELFObjectFile<target_endianness, is64Bits>
1963 ::end_libraries_needed() const {
1964 dyn_iterator e = end_dynamic_table();
1965 // Use the same DataRefImpl format as DynRef.
1966 return library_iterator(LibraryRef(e->getRawDataRefImpl(), this));
1969 template<support::endianness target_endianness, bool is64Bits>
1970 uint8_t ELFObjectFile<target_endianness, is64Bits>::getBytesInAddress() const {
1971 return is64Bits ? 8 : 4;
1974 template<support::endianness target_endianness, bool is64Bits>
1975 StringRef ELFObjectFile<target_endianness, is64Bits>
1976 ::getFileFormatName() const {
1977 switch(Header->e_ident[ELF::EI_CLASS]) {
1978 case ELF::ELFCLASS32:
1979 switch(Header->e_machine) {
1981 return "ELF32-i386";
1982 case ELF::EM_X86_64:
1983 return "ELF32-x86-64";
1986 case ELF::EM_HEXAGON:
1987 return "ELF32-hexagon";
1989 return "ELF32-unknown";
1991 case ELF::ELFCLASS64:
1992 switch(Header->e_machine) {
1994 return "ELF64-i386";
1995 case ELF::EM_X86_64:
1996 return "ELF64-x86-64";
1998 return "ELF64-unknown";
2001 // FIXME: Proper error handling.
2002 report_fatal_error("Invalid ELFCLASS!");
2006 template<support::endianness target_endianness, bool is64Bits>
2007 unsigned ELFObjectFile<target_endianness, is64Bits>::getArch() const {
2008 switch(Header->e_machine) {
2011 case ELF::EM_X86_64:
2012 return Triple::x86_64;
2015 case ELF::EM_HEXAGON:
2016 return Triple::hexagon;
2018 return Triple::UnknownArch;
2022 template<support::endianness target_endianness, bool is64Bits>
2023 uint64_t ELFObjectFile<target_endianness, is64Bits>::getNumSections() const {
2024 assert(Header && "Header not initialized!");
2025 if (Header->e_shnum == ELF::SHN_UNDEF) {
2026 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2027 return SectionHeaderTable->sh_size;
2029 return Header->e_shnum;
2032 template<support::endianness target_endianness, bool is64Bits>
2034 ELFObjectFile<target_endianness, is64Bits>::getStringTableIndex() const {
2035 if (Header->e_shnum == ELF::SHN_UNDEF) {
2036 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2037 return SectionHeaderTable->sh_link;
2038 if (Header->e_shstrndx >= getNumSections())
2041 return Header->e_shstrndx;
2045 template<support::endianness target_endianness, bool is64Bits>
2046 template<typename T>
2048 ELFObjectFile<target_endianness, is64Bits>::getEntry(uint16_t Section,
2049 uint32_t Entry) const {
2050 return getEntry<T>(getSection(Section), Entry);
2053 template<support::endianness target_endianness, bool is64Bits>
2054 template<typename T>
2056 ELFObjectFile<target_endianness, is64Bits>::getEntry(const Elf_Shdr * Section,
2057 uint32_t Entry) const {
2058 return reinterpret_cast<const T *>(
2060 + Section->sh_offset
2061 + (Entry * Section->sh_entsize));
2064 template<support::endianness target_endianness, bool is64Bits>
2065 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
2066 ELFObjectFile<target_endianness, is64Bits>::getSymbol(DataRefImpl Symb) const {
2067 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2070 template<support::endianness target_endianness, bool is64Bits>
2071 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Dyn *
2072 ELFObjectFile<target_endianness, is64Bits>::getDyn(DataRefImpl DynData) const {
2073 return getEntry<Elf_Dyn>(dot_dynamic_sec, DynData.d.a);
2076 template<support::endianness target_endianness, bool is64Bits>
2077 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rel *
2078 ELFObjectFile<target_endianness, is64Bits>::getRel(DataRefImpl Rel) const {
2079 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2082 template<support::endianness target_endianness, bool is64Bits>
2083 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rela *
2084 ELFObjectFile<target_endianness, is64Bits>::getRela(DataRefImpl Rela) const {
2085 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2088 template<support::endianness target_endianness, bool is64Bits>
2089 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
2090 ELFObjectFile<target_endianness, is64Bits>::getSection(DataRefImpl Symb) const {
2091 const Elf_Shdr *sec = getSection(Symb.d.b);
2092 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2093 // FIXME: Proper error handling.
2094 report_fatal_error("Invalid symbol table section!");
2098 template<support::endianness target_endianness, bool is64Bits>
2099 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
2100 ELFObjectFile<target_endianness, is64Bits>::getSection(uint32_t index) const {
2103 if (!SectionHeaderTable || index >= getNumSections())
2104 // FIXME: Proper error handling.
2105 report_fatal_error("Invalid section index!");
2107 return reinterpret_cast<const Elf_Shdr *>(
2108 reinterpret_cast<const char *>(SectionHeaderTable)
2109 + (index * Header->e_shentsize));
2112 template<support::endianness target_endianness, bool is64Bits>
2113 const char *ELFObjectFile<target_endianness, is64Bits>
2114 ::getString(uint32_t section,
2115 ELF::Elf32_Word offset) const {
2116 return getString(getSection(section), offset);
2119 template<support::endianness target_endianness, bool is64Bits>
2120 const char *ELFObjectFile<target_endianness, is64Bits>
2121 ::getString(const Elf_Shdr *section,
2122 ELF::Elf32_Word offset) const {
2123 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2124 if (offset >= section->sh_size)
2125 // FIXME: Proper error handling.
2126 report_fatal_error("Symbol name offset outside of string table!");
2127 return (const char *)base() + section->sh_offset + offset;
2130 template<support::endianness target_endianness, bool is64Bits>
2131 error_code ELFObjectFile<target_endianness, is64Bits>
2132 ::getSymbolName(const Elf_Shdr *section,
2133 const Elf_Sym *symb,
2134 StringRef &Result) const {
2135 if (symb->st_name == 0) {
2136 const Elf_Shdr *section = getSection(symb);
2140 Result = getString(dot_shstrtab_sec, section->sh_name);
2141 return object_error::success;
2144 if (section == SymbolTableSections[0]) {
2145 // Symbol is in .dynsym, use .dynstr string table
2146 Result = getString(dot_dynstr_sec, symb->st_name);
2148 // Use the default symbol table name section.
2149 Result = getString(dot_strtab_sec, symb->st_name);
2151 return object_error::success;
2154 template<support::endianness target_endianness, bool is64Bits>
2155 error_code ELFObjectFile<target_endianness, is64Bits>
2156 ::getSymbolVersion(const Elf_Shdr *section,
2157 const Elf_Sym *symb,
2159 bool &IsDefault) const {
2160 // Handle non-dynamic symbols.
2161 if (section != SymbolTableSections[0]) {
2162 // Non-dynamic symbols can have versions in their names
2163 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2164 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2166 error_code ec = getSymbolName(section, symb, Name);
2167 if (ec != object_error::success)
2169 size_t atpos = Name.find('@');
2170 if (atpos == StringRef::npos) {
2173 return object_error::success;
2176 if (atpos < Name.size() && Name[atpos] == '@') {
2182 Version = Name.substr(atpos);
2183 return object_error::success;
2186 // This is a dynamic symbol. Look in the GNU symbol version table.
2187 if (dot_gnu_version_sec == NULL) {
2188 // No version table.
2191 return object_error::success;
2194 // Determine the position in the symbol table of this entry.
2195 const char *sec_start = (const char*)base() + section->sh_offset;
2196 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2198 // Get the corresponding version index entry
2199 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2200 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2202 // Special markers for unversioned symbols.
2203 if (version_index == ELF::VER_NDX_LOCAL ||
2204 version_index == ELF::VER_NDX_GLOBAL) {
2207 return object_error::success;
2210 // Lookup this symbol in the version table
2212 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2213 report_fatal_error("Symbol has version index without corresponding "
2214 "define or reference entry");
2215 const VersionMapEntry &entry = VersionMap[version_index];
2217 // Get the version name string
2219 if (entry.isVerdef()) {
2220 // The first Verdaux entry holds the name.
2221 name_offset = entry.getVerdef()->getAux()->vda_name;
2223 name_offset = entry.getVernaux()->vna_name;
2225 Version = getString(dot_dynstr_sec, name_offset);
2228 if (entry.isVerdef()) {
2229 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2234 return object_error::success;
2237 template<support::endianness target_endianness, bool is64Bits>
2238 inline DynRefImpl<target_endianness, is64Bits>
2239 ::DynRefImpl(DataRefImpl DynP, const OwningType *Owner)
2241 , OwningObject(Owner) {}
2243 template<support::endianness target_endianness, bool is64Bits>
2244 inline bool DynRefImpl<target_endianness, is64Bits>
2245 ::operator==(const DynRefImpl &Other) const {
2246 return DynPimpl == Other.DynPimpl;
2249 template<support::endianness target_endianness, bool is64Bits>
2250 inline bool DynRefImpl<target_endianness, is64Bits>
2251 ::operator <(const DynRefImpl &Other) const {
2252 return DynPimpl < Other.DynPimpl;
2255 template<support::endianness target_endianness, bool is64Bits>
2256 inline error_code DynRefImpl<target_endianness, is64Bits>
2257 ::getNext(DynRefImpl &Result) const {
2258 return OwningObject->getDynNext(DynPimpl, Result);
2261 template<support::endianness target_endianness, bool is64Bits>
2262 inline int64_t DynRefImpl<target_endianness, is64Bits>
2264 return OwningObject->getDyn(DynPimpl)->d_tag;
2267 template<support::endianness target_endianness, bool is64Bits>
2268 inline uint64_t DynRefImpl<target_endianness, is64Bits>
2270 return OwningObject->getDyn(DynPimpl)->d_un.d_val;
2273 template<support::endianness target_endianness, bool is64Bits>
2274 inline uint64_t DynRefImpl<target_endianness, is64Bits>
2276 return OwningObject->getDyn(DynPimpl)->d_un.d_ptr;
2279 template<support::endianness target_endianness, bool is64Bits>
2280 inline DataRefImpl DynRefImpl<target_endianness, is64Bits>
2281 ::getRawDataRefImpl() const {
2285 /// This is a generic interface for retrieving GNU symbol version
2286 /// information from an ELFObjectFile.
2287 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2288 const SymbolRef &Sym,
2291 // Little-endian 32-bit
2292 if (const ELFObjectFile<support::little, false> *ELFObj =
2293 dyn_cast<ELFObjectFile<support::little, false> >(Obj))
2294 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2296 // Big-endian 32-bit
2297 if (const ELFObjectFile<support::big, false> *ELFObj =
2298 dyn_cast<ELFObjectFile<support::big, false> >(Obj))
2299 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2301 // Little-endian 64-bit
2302 if (const ELFObjectFile<support::little, true> *ELFObj =
2303 dyn_cast<ELFObjectFile<support::little, true> >(Obj))
2304 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2306 // Big-endian 64-bit
2307 if (const ELFObjectFile<support::big, true> *ELFObj =
2308 dyn_cast<ELFObjectFile<support::big, true> >(Obj))
2309 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2311 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");