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;
390 template<support::endianness target_endianness, bool is64Bits>
391 struct Elf_Ehdr_Impl {
392 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
393 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
394 Elf_Half e_type; // Type of file (see ET_*)
395 Elf_Half e_machine; // Required architecture for this file (see EM_*)
396 Elf_Word e_version; // Must be equal to 1
397 Elf_Addr e_entry; // Address to jump to in order to start program
398 Elf_Off e_phoff; // Program header table's file offset, in bytes
399 Elf_Off e_shoff; // Section header table's file offset, in bytes
400 Elf_Word e_flags; // Processor-specific flags
401 Elf_Half e_ehsize; // Size of ELF header, in bytes
402 Elf_Half e_phentsize;// Size of an entry in the program header table
403 Elf_Half e_phnum; // Number of entries in the program header table
404 Elf_Half e_shentsize;// Size of an entry in the section header table
405 Elf_Half e_shnum; // Number of entries in the section header table
406 Elf_Half e_shstrndx; // Section header table index of section name
408 bool checkMagic() const {
409 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
411 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
412 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
415 template<support::endianness target_endianness, bool is64Bits>
416 class ELFObjectFile : public ObjectFile {
417 LLVM_ELF_IMPORT_TYPES(target_endianness, is64Bits)
419 typedef Elf_Ehdr_Impl<target_endianness, is64Bits> Elf_Ehdr;
420 typedef Elf_Shdr_Impl<target_endianness, is64Bits> Elf_Shdr;
421 typedef Elf_Sym_Impl<target_endianness, is64Bits> Elf_Sym;
422 typedef Elf_Dyn_Impl<target_endianness, is64Bits> Elf_Dyn;
423 typedef Elf_Rel_Impl<target_endianness, is64Bits, false> Elf_Rel;
424 typedef Elf_Rel_Impl<target_endianness, is64Bits, true> Elf_Rela;
425 typedef Elf_Verdef_Impl<target_endianness, is64Bits> Elf_Verdef;
426 typedef Elf_Verdaux_Impl<target_endianness, is64Bits> Elf_Verdaux;
427 typedef Elf_Verneed_Impl<target_endianness, is64Bits> Elf_Verneed;
428 typedef Elf_Vernaux_Impl<target_endianness, is64Bits> Elf_Vernaux;
429 typedef Elf_Versym_Impl<target_endianness, is64Bits> Elf_Versym;
430 typedef DynRefImpl<target_endianness, is64Bits> DynRef;
431 typedef content_iterator<DynRef> dyn_iterator;
434 // This flag is used for classof, to distinguish ELFObjectFile from
435 // its subclass. If more subclasses will be created, this flag will
436 // have to become an enum.
437 bool isDyldELFObject;
440 typedef SmallVector<const Elf_Shdr*, 1> Sections_t;
441 typedef DenseMap<unsigned, unsigned> IndexMap_t;
442 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
444 const Elf_Ehdr *Header;
445 const Elf_Shdr *SectionHeaderTable;
446 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
447 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
448 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
450 // SymbolTableSections[0] always points to the dynamic string table section
451 // header, or NULL if there is no dynamic string table.
452 Sections_t SymbolTableSections;
453 IndexMap_t SymbolTableSectionsIndexMap;
454 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
456 const Elf_Shdr *dot_dynamic_sec; // .dynamic
457 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
458 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
459 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
461 // Pointer to SONAME entry in dynamic string table
462 // This is set the first time getLoadName is called.
463 mutable const char *dt_soname;
465 // Records for each version index the corresponding Verdef or Vernaux entry.
466 // This is filled the first time LoadVersionMap() is called.
467 class VersionMapEntry : public PointerIntPair<const void*, 1> {
469 // If the integer is 0, this is an Elf_Verdef*.
470 // If the integer is 1, this is an Elf_Vernaux*.
471 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
472 VersionMapEntry(const Elf_Verdef *verdef)
473 : PointerIntPair<const void*, 1>(verdef, 0) { }
474 VersionMapEntry(const Elf_Vernaux *vernaux)
475 : PointerIntPair<const void*, 1>(vernaux, 1) { }
476 bool isNull() const { return getPointer() == NULL; }
477 bool isVerdef() const { return !isNull() && getInt() == 0; }
478 bool isVernaux() const { return !isNull() && getInt() == 1; }
479 const Elf_Verdef *getVerdef() const {
480 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
482 const Elf_Vernaux *getVernaux() const {
483 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
486 mutable SmallVector<VersionMapEntry, 16> VersionMap;
487 void LoadVersionDefs(const Elf_Shdr *sec) const;
488 void LoadVersionNeeds(const Elf_Shdr *ec) const;
489 void LoadVersionMap() const;
491 /// @brief Map sections to an array of relocation sections that reference
492 /// them sorted by section index.
493 RelocMap_t SectionRelocMap;
495 /// @brief Get the relocation section that contains \a Rel.
496 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
497 return getSection(Rel.w.b);
500 bool isRelocationHasAddend(DataRefImpl Rel) const;
502 const T *getEntry(uint16_t Section, uint32_t Entry) const;
504 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
505 const Elf_Shdr *getSection(DataRefImpl index) const;
506 const Elf_Shdr *getSection(uint32_t index) const;
507 const Elf_Rel *getRel(DataRefImpl Rel) const;
508 const Elf_Rela *getRela(DataRefImpl Rela) const;
509 const char *getString(uint32_t section, uint32_t offset) const;
510 const char *getString(const Elf_Shdr *section, uint32_t offset) 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 error_code getSymbolName(const Elf_Shdr *section,
524 StringRef &Res) const;
525 error_code getSectionName(const Elf_Shdr *section,
526 StringRef &Res) const;
527 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
528 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
529 bool &IsDefault) const;
531 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
532 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
533 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
534 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
535 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
536 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
537 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
538 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
539 virtual error_code getSymbolSection(DataRefImpl Symb,
540 section_iterator &Res) const;
542 friend class DynRefImpl<target_endianness, is64Bits>;
543 virtual error_code getDynNext(DataRefImpl DynData, DynRef &Result) const;
545 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
546 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
548 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
549 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
550 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
551 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
552 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
553 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
554 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
555 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
556 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
557 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
559 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
560 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
561 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
563 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
564 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
566 virtual error_code getRelocationNext(DataRefImpl Rel,
567 RelocationRef &Res) const;
568 virtual error_code getRelocationAddress(DataRefImpl Rel,
569 uint64_t &Res) const;
570 virtual error_code getRelocationOffset(DataRefImpl Rel,
571 uint64_t &Res) const;
572 virtual error_code getRelocationSymbol(DataRefImpl Rel,
573 SymbolRef &Res) const;
574 virtual error_code getRelocationType(DataRefImpl Rel,
575 uint64_t &Res) const;
576 virtual error_code getRelocationTypeName(DataRefImpl Rel,
577 SmallVectorImpl<char> &Result) const;
578 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
580 virtual error_code getRelocationValueString(DataRefImpl Rel,
581 SmallVectorImpl<char> &Result) const;
584 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
585 virtual symbol_iterator begin_symbols() const;
586 virtual symbol_iterator end_symbols() const;
588 virtual symbol_iterator begin_dynamic_symbols() const;
589 virtual symbol_iterator end_dynamic_symbols() const;
591 virtual section_iterator begin_sections() const;
592 virtual section_iterator end_sections() const;
594 virtual library_iterator begin_libraries_needed() const;
595 virtual library_iterator end_libraries_needed() const;
597 virtual dyn_iterator begin_dynamic_table() const;
598 virtual dyn_iterator end_dynamic_table() const;
600 virtual uint8_t getBytesInAddress() const;
601 virtual StringRef getFileFormatName() const;
602 virtual StringRef getObjectType() const { return "ELF"; }
603 virtual unsigned getArch() const;
604 virtual StringRef getLoadName() const;
605 virtual error_code getSectionContents(const Elf_Shdr *sec,
606 StringRef &Res) const;
608 uint64_t getNumSections() const;
609 uint64_t getStringTableIndex() const;
610 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
611 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
612 const Elf_Shdr *getElfSection(section_iterator &It) const;
613 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
615 // Methods for type inquiry through isa, cast, and dyn_cast
616 bool isDyldType() const { return isDyldELFObject; }
617 static inline bool classof(const Binary *v) {
618 return v->getType() == getELFType(target_endianness == support::little,
621 static inline bool classof(const ELFObjectFile *v) { return true; }
624 // Iterate through the version definitions, and place each Elf_Verdef
625 // in the VersionMap according to its index.
626 template<support::endianness target_endianness, bool is64Bits>
627 void ELFObjectFile<target_endianness, is64Bits>::
628 LoadVersionDefs(const Elf_Shdr *sec) const {
629 unsigned vd_size = sec->sh_size; // Size of section in bytes
630 unsigned vd_count = sec->sh_info; // Number of Verdef entries
631 const char *sec_start = (const char*)base() + sec->sh_offset;
632 const char *sec_end = sec_start + vd_size;
633 // The first Verdef entry is at the start of the section.
634 const char *p = sec_start;
635 for (unsigned i = 0; i < vd_count; i++) {
636 if (p + sizeof(Elf_Verdef) > sec_end)
637 report_fatal_error("Section ended unexpectedly while scanning "
638 "version definitions.");
639 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
640 if (vd->vd_version != ELF::VER_DEF_CURRENT)
641 report_fatal_error("Unexpected verdef version");
642 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
643 if (index >= VersionMap.size())
644 VersionMap.resize(index+1);
645 VersionMap[index] = VersionMapEntry(vd);
650 // Iterate through the versions needed section, and place each Elf_Vernaux
651 // in the VersionMap according to its index.
652 template<support::endianness target_endianness, bool is64Bits>
653 void ELFObjectFile<target_endianness, is64Bits>::
654 LoadVersionNeeds(const Elf_Shdr *sec) const {
655 unsigned vn_size = sec->sh_size; // Size of section in bytes
656 unsigned vn_count = sec->sh_info; // Number of Verneed entries
657 const char *sec_start = (const char*)base() + sec->sh_offset;
658 const char *sec_end = sec_start + vn_size;
659 // The first Verneed entry is at the start of the section.
660 const char *p = sec_start;
661 for (unsigned i = 0; i < vn_count; i++) {
662 if (p + sizeof(Elf_Verneed) > sec_end)
663 report_fatal_error("Section ended unexpectedly while scanning "
664 "version needed records.");
665 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
666 if (vn->vn_version != ELF::VER_NEED_CURRENT)
667 report_fatal_error("Unexpected verneed version");
668 // Iterate through the Vernaux entries
669 const char *paux = p + vn->vn_aux;
670 for (unsigned j = 0; j < vn->vn_cnt; j++) {
671 if (paux + sizeof(Elf_Vernaux) > sec_end)
672 report_fatal_error("Section ended unexpected while scanning auxiliary "
673 "version needed records.");
674 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
675 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
676 if (index >= VersionMap.size())
677 VersionMap.resize(index+1);
678 VersionMap[index] = VersionMapEntry(vna);
679 paux += vna->vna_next;
685 template<support::endianness target_endianness, bool is64Bits>
686 void ELFObjectFile<target_endianness, is64Bits>::LoadVersionMap() const {
687 // If there is no dynamic symtab or version table, there is nothing to do.
688 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
691 // Has the VersionMap already been loaded?
692 if (VersionMap.size() > 0)
695 // The first two version indexes are reserved.
696 // Index 0 is LOCAL, index 1 is GLOBAL.
697 VersionMap.push_back(VersionMapEntry());
698 VersionMap.push_back(VersionMapEntry());
700 if (dot_gnu_version_d_sec)
701 LoadVersionDefs(dot_gnu_version_d_sec);
703 if (dot_gnu_version_r_sec)
704 LoadVersionNeeds(dot_gnu_version_r_sec);
707 template<support::endianness target_endianness, bool is64Bits>
708 void ELFObjectFile<target_endianness, is64Bits>
709 ::validateSymbol(DataRefImpl Symb) const {
710 const Elf_Sym *symb = getSymbol(Symb);
711 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
712 // FIXME: We really need to do proper error handling in the case of an invalid
713 // input file. Because we don't use exceptions, I think we'll just pass
714 // an error object around.
716 && SymbolTableSection
717 && symb >= (const Elf_Sym*)(base()
718 + SymbolTableSection->sh_offset)
719 && symb < (const Elf_Sym*)(base()
720 + SymbolTableSection->sh_offset
721 + SymbolTableSection->sh_size)))
722 // FIXME: Proper error handling.
723 report_fatal_error("Symb must point to a valid symbol!");
726 template<support::endianness target_endianness, bool is64Bits>
727 error_code ELFObjectFile<target_endianness, is64Bits>
728 ::getSymbolNext(DataRefImpl Symb,
729 SymbolRef &Result) const {
730 validateSymbol(Symb);
731 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
734 // Check to see if we are at the end of this symbol table.
735 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
736 // We are at the end. If there are other symbol tables, jump to them.
737 // If the symbol table is .dynsym, we are iterating dynamic symbols,
738 // and there is only one table of these.
741 Symb.d.a = 1; // The 0th symbol in ELF is fake.
743 // Otherwise return the terminator.
744 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
745 Symb.d.a = std::numeric_limits<uint32_t>::max();
746 Symb.d.b = std::numeric_limits<uint32_t>::max();
750 Result = SymbolRef(Symb, this);
751 return object_error::success;
754 template<support::endianness target_endianness, bool is64Bits>
755 error_code ELFObjectFile<target_endianness, is64Bits>
756 ::getSymbolName(DataRefImpl Symb,
757 StringRef &Result) const {
758 validateSymbol(Symb);
759 const Elf_Sym *symb = getSymbol(Symb);
760 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
763 template<support::endianness target_endianness, bool is64Bits>
764 error_code ELFObjectFile<target_endianness, is64Bits>
765 ::getSymbolVersion(SymbolRef SymRef,
767 bool &IsDefault) const {
768 DataRefImpl Symb = SymRef.getRawDataRefImpl();
769 validateSymbol(Symb);
770 const Elf_Sym *symb = getSymbol(Symb);
771 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
775 template<support::endianness target_endianness, bool is64Bits>
776 ELF::Elf64_Word ELFObjectFile<target_endianness, is64Bits>
777 ::getSymbolTableIndex(const Elf_Sym *symb) const {
778 if (symb->st_shndx == ELF::SHN_XINDEX)
779 return ExtendedSymbolTable.lookup(symb);
780 return symb->st_shndx;
783 template<support::endianness target_endianness, bool is64Bits>
784 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
785 ELFObjectFile<target_endianness, is64Bits>
786 ::getSection(const Elf_Sym *symb) const {
787 if (symb->st_shndx == ELF::SHN_XINDEX)
788 return getSection(ExtendedSymbolTable.lookup(symb));
789 if (symb->st_shndx >= ELF::SHN_LORESERVE)
791 return getSection(symb->st_shndx);
794 template<support::endianness target_endianness, bool is64Bits>
795 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
796 ELFObjectFile<target_endianness, is64Bits>
797 ::getElfSection(section_iterator &It) const {
798 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
799 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
802 template<support::endianness target_endianness, bool is64Bits>
803 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
804 ELFObjectFile<target_endianness, is64Bits>
805 ::getElfSymbol(symbol_iterator &It) const {
806 return getSymbol(It->getRawDataRefImpl());
809 template<support::endianness target_endianness, bool is64Bits>
810 error_code ELFObjectFile<target_endianness, is64Bits>
811 ::getSymbolFileOffset(DataRefImpl Symb,
812 uint64_t &Result) const {
813 validateSymbol(Symb);
814 const Elf_Sym *symb = getSymbol(Symb);
815 const Elf_Shdr *Section;
816 switch (getSymbolTableIndex(symb)) {
817 case ELF::SHN_COMMON:
818 // Unintialized symbols have no offset in the object file
820 Result = UnknownAddressOrSize;
821 return object_error::success;
823 Result = symb->st_value;
824 return object_error::success;
825 default: Section = getSection(symb);
828 switch (symb->getType()) {
829 case ELF::STT_SECTION:
830 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
831 return object_error::success;
833 case ELF::STT_OBJECT:
834 case ELF::STT_NOTYPE:
835 Result = symb->st_value +
836 (Section ? Section->sh_offset : 0);
837 return object_error::success;
839 Result = UnknownAddressOrSize;
840 return object_error::success;
844 template<support::endianness target_endianness, bool is64Bits>
845 error_code ELFObjectFile<target_endianness, is64Bits>
846 ::getSymbolAddress(DataRefImpl Symb,
847 uint64_t &Result) const {
848 validateSymbol(Symb);
849 const Elf_Sym *symb = getSymbol(Symb);
850 const Elf_Shdr *Section;
851 switch (getSymbolTableIndex(symb)) {
852 case ELF::SHN_COMMON:
854 Result = UnknownAddressOrSize;
855 return object_error::success;
857 Result = symb->st_value;
858 return object_error::success;
859 default: Section = getSection(symb);
862 switch (symb->getType()) {
863 case ELF::STT_SECTION:
864 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
865 return object_error::success;
867 case ELF::STT_OBJECT:
868 case ELF::STT_NOTYPE:
869 Result = symb->st_value + (Section ? Section->sh_addr : 0);
870 return object_error::success;
872 Result = UnknownAddressOrSize;
873 return object_error::success;
877 template<support::endianness target_endianness, bool is64Bits>
878 error_code ELFObjectFile<target_endianness, is64Bits>
879 ::getSymbolSize(DataRefImpl Symb,
880 uint64_t &Result) const {
881 validateSymbol(Symb);
882 const Elf_Sym *symb = getSymbol(Symb);
883 if (symb->st_size == 0)
884 Result = UnknownAddressOrSize;
885 Result = symb->st_size;
886 return object_error::success;
889 template<support::endianness target_endianness, bool is64Bits>
890 error_code ELFObjectFile<target_endianness, is64Bits>
891 ::getSymbolNMTypeChar(DataRefImpl Symb,
892 char &Result) const {
893 validateSymbol(Symb);
894 const Elf_Sym *symb = getSymbol(Symb);
895 const Elf_Shdr *Section = getSection(symb);
900 switch (Section->sh_type) {
901 case ELF::SHT_PROGBITS:
902 case ELF::SHT_DYNAMIC:
903 switch (Section->sh_flags) {
904 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
906 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
909 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
910 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
914 case ELF::SHT_NOBITS: ret = 'b';
918 switch (getSymbolTableIndex(symb)) {
923 case ELF::SHN_ABS: ret = 'a'; break;
924 case ELF::SHN_COMMON: ret = 'c'; break;
927 switch (symb->getBinding()) {
928 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
930 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
933 if (symb->getType() == ELF::STT_OBJECT)
939 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
941 if (error_code ec = getSymbolName(Symb, name))
943 Result = StringSwitch<char>(name)
944 .StartsWith(".debug", 'N')
945 .StartsWith(".note", 'n')
947 return object_error::success;
951 return object_error::success;
954 template<support::endianness target_endianness, bool is64Bits>
955 error_code ELFObjectFile<target_endianness, is64Bits>
956 ::getSymbolType(DataRefImpl Symb,
957 SymbolRef::Type &Result) const {
958 validateSymbol(Symb);
959 const Elf_Sym *symb = getSymbol(Symb);
961 switch (symb->getType()) {
962 case ELF::STT_NOTYPE:
963 Result = SymbolRef::ST_Unknown;
965 case ELF::STT_SECTION:
966 Result = SymbolRef::ST_Debug;
969 Result = SymbolRef::ST_File;
972 Result = SymbolRef::ST_Function;
974 case ELF::STT_OBJECT:
975 case ELF::STT_COMMON:
977 Result = SymbolRef::ST_Data;
980 Result = SymbolRef::ST_Other;
983 return object_error::success;
986 template<support::endianness target_endianness, bool is64Bits>
987 error_code ELFObjectFile<target_endianness, is64Bits>
988 ::getSymbolFlags(DataRefImpl Symb,
989 uint32_t &Result) const {
990 validateSymbol(Symb);
991 const Elf_Sym *symb = getSymbol(Symb);
993 Result = SymbolRef::SF_None;
995 if (symb->getBinding() != ELF::STB_LOCAL)
996 Result |= SymbolRef::SF_Global;
998 if (symb->getBinding() == ELF::STB_WEAK)
999 Result |= SymbolRef::SF_Weak;
1001 if (symb->st_shndx == ELF::SHN_ABS)
1002 Result |= SymbolRef::SF_Absolute;
1004 if (symb->getType() == ELF::STT_FILE ||
1005 symb->getType() == ELF::STT_SECTION)
1006 Result |= SymbolRef::SF_FormatSpecific;
1008 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1009 Result |= SymbolRef::SF_Undefined;
1011 if (symb->getType() == ELF::STT_COMMON ||
1012 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1013 Result |= SymbolRef::SF_Common;
1015 if (symb->getType() == ELF::STT_TLS)
1016 Result |= SymbolRef::SF_ThreadLocal;
1018 return object_error::success;
1021 template<support::endianness target_endianness, bool is64Bits>
1022 error_code ELFObjectFile<target_endianness, is64Bits>
1023 ::getSymbolSection(DataRefImpl Symb,
1024 section_iterator &Res) const {
1025 validateSymbol(Symb);
1026 const Elf_Sym *symb = getSymbol(Symb);
1027 const Elf_Shdr *sec = getSection(symb);
1029 Res = end_sections();
1032 Sec.p = reinterpret_cast<intptr_t>(sec);
1033 Res = section_iterator(SectionRef(Sec, this));
1035 return object_error::success;
1038 template<support::endianness target_endianness, bool is64Bits>
1039 error_code ELFObjectFile<target_endianness, is64Bits>
1040 ::getSectionNext(DataRefImpl Sec, SectionRef &Result) const {
1041 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1042 sec += Header->e_shentsize;
1043 Sec.p = reinterpret_cast<intptr_t>(sec);
1044 Result = SectionRef(Sec, this);
1045 return object_error::success;
1048 template<support::endianness target_endianness, bool is64Bits>
1049 error_code ELFObjectFile<target_endianness, is64Bits>
1050 ::getSectionName(DataRefImpl Sec,
1051 StringRef &Result) const {
1052 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1053 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1054 return object_error::success;
1057 template<support::endianness target_endianness, bool is64Bits>
1058 error_code ELFObjectFile<target_endianness, is64Bits>
1059 ::getSectionAddress(DataRefImpl Sec,
1060 uint64_t &Result) const {
1061 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1062 Result = sec->sh_addr;
1063 return object_error::success;
1066 template<support::endianness target_endianness, bool is64Bits>
1067 error_code ELFObjectFile<target_endianness, is64Bits>
1068 ::getSectionSize(DataRefImpl Sec,
1069 uint64_t &Result) const {
1070 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1071 Result = sec->sh_size;
1072 return object_error::success;
1075 template<support::endianness target_endianness, bool is64Bits>
1076 error_code ELFObjectFile<target_endianness, is64Bits>
1077 ::getSectionContents(DataRefImpl Sec,
1078 StringRef &Result) const {
1079 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1080 const char *start = (const char*)base() + sec->sh_offset;
1081 Result = StringRef(start, sec->sh_size);
1082 return object_error::success;
1085 template<support::endianness target_endianness, bool is64Bits>
1086 error_code ELFObjectFile<target_endianness, is64Bits>
1087 ::getSectionContents(const Elf_Shdr *Sec,
1088 StringRef &Result) const {
1089 const char *start = (const char*)base() + Sec->sh_offset;
1090 Result = StringRef(start, Sec->sh_size);
1091 return object_error::success;
1094 template<support::endianness target_endianness, bool is64Bits>
1095 error_code ELFObjectFile<target_endianness, is64Bits>
1096 ::getSectionAlignment(DataRefImpl Sec,
1097 uint64_t &Result) const {
1098 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1099 Result = sec->sh_addralign;
1100 return object_error::success;
1103 template<support::endianness target_endianness, bool is64Bits>
1104 error_code ELFObjectFile<target_endianness, is64Bits>
1105 ::isSectionText(DataRefImpl Sec,
1106 bool &Result) const {
1107 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1108 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1112 return object_error::success;
1115 template<support::endianness target_endianness, bool is64Bits>
1116 error_code ELFObjectFile<target_endianness, is64Bits>
1117 ::isSectionData(DataRefImpl Sec,
1118 bool &Result) const {
1119 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1120 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1121 && sec->sh_type == ELF::SHT_PROGBITS)
1125 return object_error::success;
1128 template<support::endianness target_endianness, bool is64Bits>
1129 error_code ELFObjectFile<target_endianness, is64Bits>
1130 ::isSectionBSS(DataRefImpl Sec,
1131 bool &Result) const {
1132 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1133 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1134 && sec->sh_type == ELF::SHT_NOBITS)
1138 return object_error::success;
1141 template<support::endianness target_endianness, bool is64Bits>
1142 error_code ELFObjectFile<target_endianness, is64Bits>
1143 ::isSectionRequiredForExecution(DataRefImpl Sec,
1144 bool &Result) const {
1145 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1146 if (sec->sh_flags & ELF::SHF_ALLOC)
1150 return object_error::success;
1153 template<support::endianness target_endianness, bool is64Bits>
1154 error_code ELFObjectFile<target_endianness, is64Bits>
1155 ::isSectionVirtual(DataRefImpl Sec,
1156 bool &Result) const {
1157 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1158 if (sec->sh_type == ELF::SHT_NOBITS)
1162 return object_error::success;
1165 template<support::endianness target_endianness, bool is64Bits>
1166 error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRefImpl Sec,
1167 bool &Result) const {
1168 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1169 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1170 // in the object image) and vice versa.
1171 if (sec->sh_flags & ELF::SHT_NOBITS)
1175 return object_error::success;
1178 template<support::endianness target_endianness, bool is64Bits>
1179 error_code ELFObjectFile<target_endianness, is64Bits>
1180 ::sectionContainsSymbol(DataRefImpl Sec,
1182 bool &Result) const {
1183 // FIXME: Unimplemented.
1185 return object_error::success;
1188 template<support::endianness target_endianness, bool is64Bits>
1189 relocation_iterator ELFObjectFile<target_endianness, is64Bits>
1190 ::getSectionRelBegin(DataRefImpl Sec) const {
1191 DataRefImpl RelData;
1192 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1193 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1194 if (sec != 0 && ittr != SectionRelocMap.end()) {
1195 RelData.w.a = getSection(ittr->second[0])->sh_info;
1196 RelData.w.b = ittr->second[0];
1199 return relocation_iterator(RelocationRef(RelData, this));
1202 template<support::endianness target_endianness, bool is64Bits>
1203 relocation_iterator ELFObjectFile<target_endianness, is64Bits>
1204 ::getSectionRelEnd(DataRefImpl Sec) const {
1205 DataRefImpl RelData;
1206 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1207 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1208 if (sec != 0 && ittr != SectionRelocMap.end()) {
1209 // Get the index of the last relocation section for this section.
1210 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1211 const Elf_Shdr *relocsec = getSection(relocsecindex);
1212 RelData.w.a = relocsec->sh_info;
1213 RelData.w.b = relocsecindex;
1214 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1216 return relocation_iterator(RelocationRef(RelData, this));
1220 template<support::endianness target_endianness, bool is64Bits>
1221 error_code ELFObjectFile<target_endianness, is64Bits>
1222 ::getRelocationNext(DataRefImpl Rel,
1223 RelocationRef &Result) const {
1225 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1226 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1227 // We have reached the end of the relocations for this section. See if there
1228 // is another relocation section.
1229 typename RelocMap_t::mapped_type relocseclist =
1230 SectionRelocMap.lookup(getSection(Rel.w.a));
1232 // Do a binary search for the current reloc section index (which must be
1233 // present). Then get the next one.
1234 typename RelocMap_t::mapped_type::const_iterator loc =
1235 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1238 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1239 // to the end iterator.
1240 if (loc != relocseclist.end()) {
1245 Result = RelocationRef(Rel, this);
1246 return object_error::success;
1249 template<support::endianness target_endianness, bool is64Bits>
1250 error_code ELFObjectFile<target_endianness, is64Bits>
1251 ::getRelocationSymbol(DataRefImpl Rel,
1252 SymbolRef &Result) const {
1254 const Elf_Shdr *sec = getSection(Rel.w.b);
1255 switch (sec->sh_type) {
1257 report_fatal_error("Invalid section type in Rel!");
1258 case ELF::SHT_REL : {
1259 symbolIdx = getRel(Rel)->getSymbol();
1262 case ELF::SHT_RELA : {
1263 symbolIdx = getRela(Rel)->getSymbol();
1267 DataRefImpl SymbolData;
1268 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1269 if (it == SymbolTableSectionsIndexMap.end())
1270 report_fatal_error("Relocation symbol table not found!");
1271 SymbolData.d.a = symbolIdx;
1272 SymbolData.d.b = it->second;
1273 Result = SymbolRef(SymbolData, this);
1274 return object_error::success;
1277 template<support::endianness target_endianness, bool is64Bits>
1278 error_code ELFObjectFile<target_endianness, is64Bits>
1279 ::getRelocationAddress(DataRefImpl Rel,
1280 uint64_t &Result) const {
1282 const Elf_Shdr *sec = getSection(Rel.w.b);
1283 switch (sec->sh_type) {
1285 report_fatal_error("Invalid section type in Rel!");
1286 case ELF::SHT_REL : {
1287 offset = getRel(Rel)->r_offset;
1290 case ELF::SHT_RELA : {
1291 offset = getRela(Rel)->r_offset;
1297 return object_error::success;
1300 template<support::endianness target_endianness, bool is64Bits>
1301 error_code ELFObjectFile<target_endianness, is64Bits>
1302 ::getRelocationOffset(DataRefImpl Rel,
1303 uint64_t &Result) const {
1305 const Elf_Shdr *sec = getSection(Rel.w.b);
1306 switch (sec->sh_type) {
1308 report_fatal_error("Invalid section type in Rel!");
1309 case ELF::SHT_REL : {
1310 offset = getRel(Rel)->r_offset;
1313 case ELF::SHT_RELA : {
1314 offset = getRela(Rel)->r_offset;
1319 Result = offset - sec->sh_addr;
1320 return object_error::success;
1323 template<support::endianness target_endianness, bool is64Bits>
1324 error_code ELFObjectFile<target_endianness, is64Bits>
1325 ::getRelocationType(DataRefImpl Rel,
1326 uint64_t &Result) const {
1327 const Elf_Shdr *sec = getSection(Rel.w.b);
1328 switch (sec->sh_type) {
1330 report_fatal_error("Invalid section type in Rel!");
1331 case ELF::SHT_REL : {
1332 Result = getRel(Rel)->getType();
1335 case ELF::SHT_RELA : {
1336 Result = getRela(Rel)->getType();
1340 return object_error::success;
1343 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1344 case ELF::enum: res = #enum; break;
1346 template<support::endianness target_endianness, bool is64Bits>
1347 error_code ELFObjectFile<target_endianness, is64Bits>
1348 ::getRelocationTypeName(DataRefImpl Rel,
1349 SmallVectorImpl<char> &Result) const {
1350 const Elf_Shdr *sec = getSection(Rel.w.b);
1353 switch (sec->sh_type) {
1355 return object_error::parse_failed;
1356 case ELF::SHT_REL : {
1357 type = getRel(Rel)->getType();
1360 case ELF::SHT_RELA : {
1361 type = getRela(Rel)->getType();
1365 switch (Header->e_machine) {
1366 case ELF::EM_X86_64:
1368 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1369 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1370 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1371 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1372 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1373 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1374 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1375 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1376 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1377 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1378 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1379 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1380 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1381 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1382 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1383 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1384 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1385 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1386 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1387 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1388 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1389 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1390 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1391 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1392 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1393 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1394 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1395 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1396 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1397 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1398 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1399 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1406 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1407 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1408 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1409 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1410 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1411 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1412 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1413 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1414 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1415 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1416 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1417 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1418 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1419 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1420 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1421 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1422 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1423 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1424 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1425 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1426 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1427 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1428 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1429 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1430 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1431 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1432 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1433 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1434 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1435 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1436 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1437 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1438 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1439 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1440 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1441 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1442 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1443 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1444 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1445 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1452 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1453 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1454 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1455 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1456 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1457 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1458 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1459 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1460 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1461 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1462 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1463 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1464 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1465 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1466 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1467 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1468 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1469 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1470 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1471 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1472 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1473 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1474 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1475 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1476 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1477 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1478 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1479 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1480 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1481 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1482 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1483 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1484 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1485 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1486 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1487 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1488 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1489 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1490 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1491 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1492 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1493 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1494 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1495 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1496 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1497 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1498 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1499 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1500 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1501 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1502 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1503 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1504 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1505 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1506 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1507 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1508 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1509 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1510 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1511 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1512 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1513 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1514 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1515 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1516 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1517 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1518 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1519 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1520 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1521 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1522 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1523 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1524 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1525 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1526 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1527 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1528 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1529 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1530 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1531 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1532 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1533 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1534 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1535 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1536 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1537 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1538 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1539 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1540 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1541 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1542 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1543 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1544 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1545 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1546 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1547 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1548 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1549 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1550 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1551 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1552 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1553 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1554 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1555 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1556 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1557 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1558 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1559 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1560 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1561 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1562 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1563 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1564 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1565 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1566 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1567 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1587 case ELF::EM_HEXAGON:
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1591 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1592 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
1682 Result.append(res.begin(), res.end());
1683 return object_error::success;
1686 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
1688 template<support::endianness target_endianness, bool is64Bits>
1689 error_code ELFObjectFile<target_endianness, is64Bits>
1690 ::getRelocationAdditionalInfo(DataRefImpl Rel,
1691 int64_t &Result) const {
1692 const Elf_Shdr *sec = getSection(Rel.w.b);
1693 switch (sec->sh_type) {
1695 report_fatal_error("Invalid section type in Rel!");
1696 case ELF::SHT_REL : {
1698 return object_error::success;
1700 case ELF::SHT_RELA : {
1701 Result = getRela(Rel)->r_addend;
1702 return object_error::success;
1707 template<support::endianness target_endianness, bool is64Bits>
1708 error_code ELFObjectFile<target_endianness, is64Bits>
1709 ::getRelocationValueString(DataRefImpl Rel,
1710 SmallVectorImpl<char> &Result) const {
1711 const Elf_Shdr *sec = getSection(Rel.w.b);
1715 uint16_t symbol_index = 0;
1716 switch (sec->sh_type) {
1718 return object_error::parse_failed;
1719 case ELF::SHT_REL: {
1720 type = getRel(Rel)->getType();
1721 symbol_index = getRel(Rel)->getSymbol();
1722 // TODO: Read implicit addend from section data.
1725 case ELF::SHT_RELA: {
1726 type = getRela(Rel)->getType();
1727 symbol_index = getRela(Rel)->getSymbol();
1728 addend = getRela(Rel)->r_addend;
1732 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
1734 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
1736 switch (Header->e_machine) {
1737 case ELF::EM_X86_64:
1739 case ELF::R_X86_64_PC8:
1740 case ELF::R_X86_64_PC16:
1741 case ELF::R_X86_64_PC32: {
1743 raw_string_ostream fmt(fmtbuf);
1744 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
1746 Result.append(fmtbuf.begin(), fmtbuf.end());
1749 case ELF::R_X86_64_8:
1750 case ELF::R_X86_64_16:
1751 case ELF::R_X86_64_32:
1752 case ELF::R_X86_64_32S:
1753 case ELF::R_X86_64_64: {
1755 raw_string_ostream fmt(fmtbuf);
1756 fmt << symname << (addend < 0 ? "" : "+") << addend;
1758 Result.append(fmtbuf.begin(), fmtbuf.end());
1766 case ELF::EM_HEXAGON:
1773 Result.append(res.begin(), res.end());
1774 return object_error::success;
1777 // Verify that the last byte in the string table in a null.
1778 template<support::endianness target_endianness, bool is64Bits>
1779 void ELFObjectFile<target_endianness, is64Bits>
1780 ::VerifyStrTab(const Elf_Shdr *sh) const {
1781 const char *strtab = (const char*)base() + sh->sh_offset;
1782 if (strtab[sh->sh_size - 1] != 0)
1783 // FIXME: Proper error handling.
1784 report_fatal_error("String table must end with a null terminator!");
1787 template<support::endianness target_endianness, bool is64Bits>
1788 ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
1790 : ObjectFile(getELFType(target_endianness == support::little, is64Bits),
1792 , isDyldELFObject(false)
1793 , SectionHeaderTable(0)
1794 , dot_shstrtab_sec(0)
1797 , dot_dynamic_sec(0)
1798 , dot_gnu_version_sec(0)
1799 , dot_gnu_version_r_sec(0)
1800 , dot_gnu_version_d_sec(0)
1804 const uint64_t FileSize = Data->getBufferSize();
1806 if (sizeof(Elf_Ehdr) > FileSize)
1807 // FIXME: Proper error handling.
1808 report_fatal_error("File too short!");
1810 Header = reinterpret_cast<const Elf_Ehdr *>(base());
1812 if (Header->e_shoff == 0)
1815 const uint64_t SectionTableOffset = Header->e_shoff;
1817 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
1818 // FIXME: Proper error handling.
1819 report_fatal_error("Section header table goes past end of file!");
1821 // The getNumSections() call below depends on SectionHeaderTable being set.
1822 SectionHeaderTable =
1823 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
1824 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
1826 if (SectionTableOffset + SectionTableSize > FileSize)
1827 // FIXME: Proper error handling.
1828 report_fatal_error("Section table goes past end of file!");
1830 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
1831 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
1832 const Elf_Shdr* sh = SectionHeaderTable;
1834 // Reserve SymbolTableSections[0] for .dynsym
1835 SymbolTableSections.push_back(NULL);
1837 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
1838 switch (sh->sh_type) {
1839 case ELF::SHT_SYMTAB_SHNDX: {
1840 if (SymbolTableSectionHeaderIndex)
1841 // FIXME: Proper error handling.
1842 report_fatal_error("More than one .symtab_shndx!");
1843 SymbolTableSectionHeaderIndex = sh;
1846 case ELF::SHT_SYMTAB: {
1847 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
1848 SymbolTableSections.push_back(sh);
1851 case ELF::SHT_DYNSYM: {
1852 if (SymbolTableSections[0] != NULL)
1853 // FIXME: Proper error handling.
1854 report_fatal_error("More than one .dynsym!");
1855 SymbolTableSectionsIndexMap[i] = 0;
1856 SymbolTableSections[0] = sh;
1860 case ELF::SHT_RELA: {
1861 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
1864 case ELF::SHT_DYNAMIC: {
1865 if (dot_dynamic_sec != NULL)
1866 // FIXME: Proper error handling.
1867 report_fatal_error("More than one .dynamic!");
1868 dot_dynamic_sec = sh;
1871 case ELF::SHT_GNU_versym: {
1872 if (dot_gnu_version_sec != NULL)
1873 // FIXME: Proper error handling.
1874 report_fatal_error("More than one .gnu.version section!");
1875 dot_gnu_version_sec = sh;
1878 case ELF::SHT_GNU_verdef: {
1879 if (dot_gnu_version_d_sec != NULL)
1880 // FIXME: Proper error handling.
1881 report_fatal_error("More than one .gnu.version_d section!");
1882 dot_gnu_version_d_sec = sh;
1885 case ELF::SHT_GNU_verneed: {
1886 if (dot_gnu_version_r_sec != NULL)
1887 // FIXME: Proper error handling.
1888 report_fatal_error("More than one .gnu.version_r section!");
1889 dot_gnu_version_r_sec = sh;
1896 // Sort section relocation lists by index.
1897 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
1898 e = SectionRelocMap.end(); i != e; ++i) {
1899 std::sort(i->second.begin(), i->second.end());
1902 // Get string table sections.
1903 dot_shstrtab_sec = getSection(getStringTableIndex());
1904 if (dot_shstrtab_sec) {
1905 // Verify that the last byte in the string table in a null.
1906 VerifyStrTab(dot_shstrtab_sec);
1909 // Merge this into the above loop.
1910 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
1911 *e = i + getNumSections() * Header->e_shentsize;
1912 i != e; i += Header->e_shentsize) {
1913 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
1914 if (sh->sh_type == ELF::SHT_STRTAB) {
1915 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
1916 if (SectionName == ".strtab") {
1917 if (dot_strtab_sec != 0)
1918 // FIXME: Proper error handling.
1919 report_fatal_error("Already found section named .strtab!");
1920 dot_strtab_sec = sh;
1921 VerifyStrTab(dot_strtab_sec);
1922 } else if (SectionName == ".dynstr") {
1923 if (dot_dynstr_sec != 0)
1924 // FIXME: Proper error handling.
1925 report_fatal_error("Already found section named .dynstr!");
1926 dot_dynstr_sec = sh;
1927 VerifyStrTab(dot_dynstr_sec);
1932 // Build symbol name side-mapping if there is one.
1933 if (SymbolTableSectionHeaderIndex) {
1934 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
1935 SymbolTableSectionHeaderIndex->sh_offset);
1937 for (symbol_iterator si = begin_symbols(),
1938 se = end_symbols(); si != se; si.increment(ec)) {
1940 report_fatal_error("Fewer extended symbol table entries than symbols!");
1941 if (*ShndxTable != ELF::SHN_UNDEF)
1942 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
1948 template<support::endianness target_endianness, bool is64Bits>
1949 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1950 ::begin_symbols() const {
1951 DataRefImpl SymbolData;
1952 if (SymbolTableSections.size() <= 1) {
1953 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1954 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1956 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
1957 SymbolData.d.b = 1; // The 0th table is .dynsym
1959 return symbol_iterator(SymbolRef(SymbolData, this));
1962 template<support::endianness target_endianness, bool is64Bits>
1963 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1964 ::end_symbols() const {
1965 DataRefImpl SymbolData;
1966 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1967 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1968 return symbol_iterator(SymbolRef(SymbolData, this));
1971 template<support::endianness target_endianness, bool is64Bits>
1972 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1973 ::begin_dynamic_symbols() const {
1974 DataRefImpl SymbolData;
1975 if (SymbolTableSections[0] == NULL) {
1976 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1977 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1979 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
1980 SymbolData.d.b = 0; // The 0th table is .dynsym
1982 return symbol_iterator(SymbolRef(SymbolData, this));
1985 template<support::endianness target_endianness, bool is64Bits>
1986 symbol_iterator ELFObjectFile<target_endianness, is64Bits>
1987 ::end_dynamic_symbols() const {
1988 DataRefImpl SymbolData;
1989 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
1990 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
1991 return symbol_iterator(SymbolRef(SymbolData, this));
1994 template<support::endianness target_endianness, bool is64Bits>
1995 section_iterator ELFObjectFile<target_endianness, is64Bits>
1996 ::begin_sections() const {
1998 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
1999 return section_iterator(SectionRef(ret, this));
2002 template<support::endianness target_endianness, bool is64Bits>
2003 section_iterator ELFObjectFile<target_endianness, is64Bits>
2004 ::end_sections() const {
2006 ret.p = reinterpret_cast<intptr_t>(base()
2008 + (Header->e_shentsize*getNumSections()));
2009 return section_iterator(SectionRef(ret, this));
2012 template<support::endianness target_endianness, bool is64Bits>
2013 typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
2014 ELFObjectFile<target_endianness, is64Bits>::begin_dynamic_table() const {
2015 DataRefImpl DynData;
2016 if (dot_dynamic_sec == NULL || dot_dynamic_sec->sh_size == 0) {
2017 DynData.d.a = std::numeric_limits<uint32_t>::max();
2021 return dyn_iterator(DynRef(DynData, this));
2024 template<support::endianness target_endianness, bool is64Bits>
2025 typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
2026 ELFObjectFile<target_endianness, is64Bits>
2027 ::end_dynamic_table() const {
2028 DataRefImpl DynData;
2029 DynData.d.a = std::numeric_limits<uint32_t>::max();
2030 return dyn_iterator(DynRef(DynData, this));
2033 template<support::endianness target_endianness, bool is64Bits>
2034 error_code ELFObjectFile<target_endianness, is64Bits>
2035 ::getDynNext(DataRefImpl DynData,
2036 DynRef &Result) const {
2039 // Check to see if we are at the end of .dynamic
2040 if (DynData.d.a >= dot_dynamic_sec->getEntityCount()) {
2041 // We are at the end. Return the terminator.
2042 DynData.d.a = std::numeric_limits<uint32_t>::max();
2045 Result = DynRef(DynData, this);
2046 return object_error::success;
2049 template<support::endianness target_endianness, bool is64Bits>
2051 ELFObjectFile<target_endianness, is64Bits>::getLoadName() const {
2053 // Find the DT_SONAME entry
2054 dyn_iterator it = begin_dynamic_table();
2055 dyn_iterator ie = end_dynamic_table();
2058 if (it->getTag() == ELF::DT_SONAME)
2062 report_fatal_error("dynamic table iteration failed");
2065 if (dot_dynstr_sec == NULL)
2066 report_fatal_error("Dynamic string table is missing");
2067 dt_soname = getString(dot_dynstr_sec, it->getVal());
2075 template<support::endianness target_endianness, bool is64Bits>
2076 library_iterator ELFObjectFile<target_endianness, is64Bits>
2077 ::begin_libraries_needed() const {
2078 // Find the first DT_NEEDED entry
2079 dyn_iterator i = begin_dynamic_table();
2080 dyn_iterator e = end_dynamic_table();
2083 if (i->getTag() == ELF::DT_NEEDED)
2087 report_fatal_error("dynamic table iteration failed");
2089 // Use the same DataRefImpl format as DynRef.
2090 return library_iterator(LibraryRef(i->getRawDataRefImpl(), this));
2093 template<support::endianness target_endianness, bool is64Bits>
2094 error_code ELFObjectFile<target_endianness, is64Bits>
2095 ::getLibraryNext(DataRefImpl Data,
2096 LibraryRef &Result) const {
2097 // Use the same DataRefImpl format as DynRef.
2098 dyn_iterator i = dyn_iterator(DynRef(Data, this));
2099 dyn_iterator e = end_dynamic_table();
2101 // Skip the current dynamic table entry.
2105 // TODO: proper error handling
2107 report_fatal_error("dynamic table iteration failed");
2110 // Find the next DT_NEEDED entry.
2112 if (i->getTag() == ELF::DT_NEEDED)
2116 report_fatal_error("dynamic table iteration failed");
2118 Result = LibraryRef(i->getRawDataRefImpl(), this);
2119 return object_error::success;
2122 template<support::endianness target_endianness, bool is64Bits>
2123 error_code ELFObjectFile<target_endianness, is64Bits>
2124 ::getLibraryPath(DataRefImpl Data, StringRef &Res) const {
2125 dyn_iterator i = dyn_iterator(DynRef(Data, this));
2126 if (i == end_dynamic_table())
2127 report_fatal_error("getLibraryPath() called on iterator end");
2129 if (i->getTag() != ELF::DT_NEEDED)
2130 report_fatal_error("Invalid library_iterator");
2132 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2133 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2134 // the time, but the specification allows exceptions.
2135 // TODO: This should really use DT_STRTAB instead. Doing this requires
2136 // reading the program headers.
2137 if (dot_dynstr_sec == NULL)
2138 report_fatal_error("Dynamic string table is missing");
2139 Res = getString(dot_dynstr_sec, i->getVal());
2140 return object_error::success;
2143 template<support::endianness target_endianness, bool is64Bits>
2144 library_iterator ELFObjectFile<target_endianness, is64Bits>
2145 ::end_libraries_needed() const {
2146 dyn_iterator e = end_dynamic_table();
2147 // Use the same DataRefImpl format as DynRef.
2148 return library_iterator(LibraryRef(e->getRawDataRefImpl(), this));
2151 template<support::endianness target_endianness, bool is64Bits>
2152 uint8_t ELFObjectFile<target_endianness, is64Bits>::getBytesInAddress() const {
2153 return is64Bits ? 8 : 4;
2156 template<support::endianness target_endianness, bool is64Bits>
2157 StringRef ELFObjectFile<target_endianness, is64Bits>
2158 ::getFileFormatName() const {
2159 switch(Header->e_ident[ELF::EI_CLASS]) {
2160 case ELF::ELFCLASS32:
2161 switch(Header->e_machine) {
2163 return "ELF32-i386";
2164 case ELF::EM_X86_64:
2165 return "ELF32-x86-64";
2168 case ELF::EM_HEXAGON:
2169 return "ELF32-hexagon";
2171 return "ELF32-unknown";
2173 case ELF::ELFCLASS64:
2174 switch(Header->e_machine) {
2176 return "ELF64-i386";
2177 case ELF::EM_X86_64:
2178 return "ELF64-x86-64";
2180 return "ELF64-unknown";
2183 // FIXME: Proper error handling.
2184 report_fatal_error("Invalid ELFCLASS!");
2188 template<support::endianness target_endianness, bool is64Bits>
2189 unsigned ELFObjectFile<target_endianness, is64Bits>::getArch() const {
2190 switch(Header->e_machine) {
2193 case ELF::EM_X86_64:
2194 return Triple::x86_64;
2197 case ELF::EM_HEXAGON:
2198 return Triple::hexagon;
2200 return (target_endianness == support::little) ?
2201 Triple::mipsel : Triple::mips;
2203 return Triple::UnknownArch;
2207 template<support::endianness target_endianness, bool is64Bits>
2208 uint64_t ELFObjectFile<target_endianness, is64Bits>::getNumSections() const {
2209 assert(Header && "Header not initialized!");
2210 if (Header->e_shnum == ELF::SHN_UNDEF) {
2211 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2212 return SectionHeaderTable->sh_size;
2214 return Header->e_shnum;
2217 template<support::endianness target_endianness, bool is64Bits>
2219 ELFObjectFile<target_endianness, is64Bits>::getStringTableIndex() const {
2220 if (Header->e_shnum == ELF::SHN_UNDEF) {
2221 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2222 return SectionHeaderTable->sh_link;
2223 if (Header->e_shstrndx >= getNumSections())
2226 return Header->e_shstrndx;
2230 template<support::endianness target_endianness, bool is64Bits>
2231 template<typename T>
2233 ELFObjectFile<target_endianness, is64Bits>::getEntry(uint16_t Section,
2234 uint32_t Entry) const {
2235 return getEntry<T>(getSection(Section), Entry);
2238 template<support::endianness target_endianness, bool is64Bits>
2239 template<typename T>
2241 ELFObjectFile<target_endianness, is64Bits>::getEntry(const Elf_Shdr * Section,
2242 uint32_t Entry) const {
2243 return reinterpret_cast<const T *>(
2245 + Section->sh_offset
2246 + (Entry * Section->sh_entsize));
2249 template<support::endianness target_endianness, bool is64Bits>
2250 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
2251 ELFObjectFile<target_endianness, is64Bits>::getSymbol(DataRefImpl Symb) const {
2252 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2255 template<support::endianness target_endianness, bool is64Bits>
2256 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Dyn *
2257 ELFObjectFile<target_endianness, is64Bits>::getDyn(DataRefImpl DynData) const {
2258 return getEntry<Elf_Dyn>(dot_dynamic_sec, DynData.d.a);
2261 template<support::endianness target_endianness, bool is64Bits>
2262 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rel *
2263 ELFObjectFile<target_endianness, is64Bits>::getRel(DataRefImpl Rel) const {
2264 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2267 template<support::endianness target_endianness, bool is64Bits>
2268 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rela *
2269 ELFObjectFile<target_endianness, is64Bits>::getRela(DataRefImpl Rela) const {
2270 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2273 template<support::endianness target_endianness, bool is64Bits>
2274 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
2275 ELFObjectFile<target_endianness, is64Bits>::getSection(DataRefImpl Symb) const {
2276 const Elf_Shdr *sec = getSection(Symb.d.b);
2277 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2278 // FIXME: Proper error handling.
2279 report_fatal_error("Invalid symbol table section!");
2283 template<support::endianness target_endianness, bool is64Bits>
2284 const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
2285 ELFObjectFile<target_endianness, is64Bits>::getSection(uint32_t index) const {
2288 if (!SectionHeaderTable || index >= getNumSections())
2289 // FIXME: Proper error handling.
2290 report_fatal_error("Invalid section index!");
2292 return reinterpret_cast<const Elf_Shdr *>(
2293 reinterpret_cast<const char *>(SectionHeaderTable)
2294 + (index * Header->e_shentsize));
2297 template<support::endianness target_endianness, bool is64Bits>
2298 const char *ELFObjectFile<target_endianness, is64Bits>
2299 ::getString(uint32_t section,
2300 ELF::Elf32_Word offset) const {
2301 return getString(getSection(section), offset);
2304 template<support::endianness target_endianness, bool is64Bits>
2305 const char *ELFObjectFile<target_endianness, is64Bits>
2306 ::getString(const Elf_Shdr *section,
2307 ELF::Elf32_Word offset) const {
2308 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2309 if (offset >= section->sh_size)
2310 // FIXME: Proper error handling.
2311 report_fatal_error("Symbol name offset outside of string table!");
2312 return (const char *)base() + section->sh_offset + offset;
2315 template<support::endianness target_endianness, bool is64Bits>
2316 error_code ELFObjectFile<target_endianness, is64Bits>
2317 ::getSymbolName(const Elf_Shdr *section,
2318 const Elf_Sym *symb,
2319 StringRef &Result) const {
2320 if (symb->st_name == 0) {
2321 const Elf_Shdr *section = getSection(symb);
2325 Result = getString(dot_shstrtab_sec, section->sh_name);
2326 return object_error::success;
2329 if (section == SymbolTableSections[0]) {
2330 // Symbol is in .dynsym, use .dynstr string table
2331 Result = getString(dot_dynstr_sec, symb->st_name);
2333 // Use the default symbol table name section.
2334 Result = getString(dot_strtab_sec, symb->st_name);
2336 return object_error::success;
2339 template<support::endianness target_endianness, bool is64Bits>
2340 error_code ELFObjectFile<target_endianness, is64Bits>
2341 ::getSectionName(const Elf_Shdr *section,
2342 StringRef &Result) const {
2343 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2344 return object_error::success;
2347 template<support::endianness target_endianness, bool is64Bits>
2348 error_code ELFObjectFile<target_endianness, is64Bits>
2349 ::getSymbolVersion(const Elf_Shdr *section,
2350 const Elf_Sym *symb,
2352 bool &IsDefault) const {
2353 // Handle non-dynamic symbols.
2354 if (section != SymbolTableSections[0]) {
2355 // Non-dynamic symbols can have versions in their names
2356 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2357 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2359 error_code ec = getSymbolName(section, symb, Name);
2360 if (ec != object_error::success)
2362 size_t atpos = Name.find('@');
2363 if (atpos == StringRef::npos) {
2366 return object_error::success;
2369 if (atpos < Name.size() && Name[atpos] == '@') {
2375 Version = Name.substr(atpos);
2376 return object_error::success;
2379 // This is a dynamic symbol. Look in the GNU symbol version table.
2380 if (dot_gnu_version_sec == NULL) {
2381 // No version table.
2384 return object_error::success;
2387 // Determine the position in the symbol table of this entry.
2388 const char *sec_start = (const char*)base() + section->sh_offset;
2389 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2391 // Get the corresponding version index entry
2392 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2393 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2395 // Special markers for unversioned symbols.
2396 if (version_index == ELF::VER_NDX_LOCAL ||
2397 version_index == ELF::VER_NDX_GLOBAL) {
2400 return object_error::success;
2403 // Lookup this symbol in the version table
2405 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2406 report_fatal_error("Symbol has version index without corresponding "
2407 "define or reference entry");
2408 const VersionMapEntry &entry = VersionMap[version_index];
2410 // Get the version name string
2412 if (entry.isVerdef()) {
2413 // The first Verdaux entry holds the name.
2414 name_offset = entry.getVerdef()->getAux()->vda_name;
2416 name_offset = entry.getVernaux()->vna_name;
2418 Version = getString(dot_dynstr_sec, name_offset);
2421 if (entry.isVerdef()) {
2422 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2427 return object_error::success;
2430 template<support::endianness target_endianness, bool is64Bits>
2431 inline DynRefImpl<target_endianness, is64Bits>
2432 ::DynRefImpl(DataRefImpl DynP, const OwningType *Owner)
2434 , OwningObject(Owner) {}
2436 template<support::endianness target_endianness, bool is64Bits>
2437 inline bool DynRefImpl<target_endianness, is64Bits>
2438 ::operator==(const DynRefImpl &Other) const {
2439 return DynPimpl == Other.DynPimpl;
2442 template<support::endianness target_endianness, bool is64Bits>
2443 inline bool DynRefImpl<target_endianness, is64Bits>
2444 ::operator <(const DynRefImpl &Other) const {
2445 return DynPimpl < Other.DynPimpl;
2448 template<support::endianness target_endianness, bool is64Bits>
2449 inline error_code DynRefImpl<target_endianness, is64Bits>
2450 ::getNext(DynRefImpl &Result) const {
2451 return OwningObject->getDynNext(DynPimpl, Result);
2454 template<support::endianness target_endianness, bool is64Bits>
2455 inline int64_t DynRefImpl<target_endianness, is64Bits>
2457 return OwningObject->getDyn(DynPimpl)->d_tag;
2460 template<support::endianness target_endianness, bool is64Bits>
2461 inline uint64_t DynRefImpl<target_endianness, is64Bits>
2463 return OwningObject->getDyn(DynPimpl)->d_un.d_val;
2466 template<support::endianness target_endianness, bool is64Bits>
2467 inline uint64_t DynRefImpl<target_endianness, is64Bits>
2469 return OwningObject->getDyn(DynPimpl)->d_un.d_ptr;
2472 template<support::endianness target_endianness, bool is64Bits>
2473 inline DataRefImpl DynRefImpl<target_endianness, is64Bits>
2474 ::getRawDataRefImpl() const {
2478 /// This is a generic interface for retrieving GNU symbol version
2479 /// information from an ELFObjectFile.
2480 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2481 const SymbolRef &Sym,
2484 // Little-endian 32-bit
2485 if (const ELFObjectFile<support::little, false> *ELFObj =
2486 dyn_cast<ELFObjectFile<support::little, false> >(Obj))
2487 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2489 // Big-endian 32-bit
2490 if (const ELFObjectFile<support::big, false> *ELFObj =
2491 dyn_cast<ELFObjectFile<support::big, false> >(Obj))
2492 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2494 // Little-endian 64-bit
2495 if (const ELFObjectFile<support::little, true> *ELFObj =
2496 dyn_cast<ELFObjectFile<support::little, true> >(Obj))
2497 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2499 // Big-endian 64-bit
2500 if (const ELFObjectFile<support::big, true> *ELFObj =
2501 dyn_cast<ELFObjectFile<support::big, true> >(Obj))
2502 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2504 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");