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/DenseMap.h"
18 #include "llvm/ADT/PointerIntPair.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/Object/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 using support::endianness;
38 template<endianness target_endianness, std::size_t max_alignment, bool is64Bits>
40 static const endianness TargetEndianness = target_endianness;
41 static const std::size_t MaxAlignment = max_alignment;
42 static const bool Is64Bits = is64Bits;
45 template<typename T, int max_align>
46 struct MaximumAlignment {
47 enum {value = AlignOf<T>::Alignment > max_align ? max_align
48 : AlignOf<T>::Alignment};
51 // Subclasses of ELFObjectFile may need this for template instantiation
52 inline std::pair<unsigned char, unsigned char>
53 getElfArchType(MemoryBuffer *Object) {
54 if (Object->getBufferSize() < ELF::EI_NIDENT)
55 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
56 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
57 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
60 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
61 template<endianness target_endianness, std::size_t max_alignment>
62 struct ELFDataTypeTypedefHelperCommon {
63 typedef support::detail::packed_endian_specific_integral
64 <uint16_t, target_endianness,
65 MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half;
66 typedef support::detail::packed_endian_specific_integral
67 <uint32_t, target_endianness,
68 MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word;
69 typedef support::detail::packed_endian_specific_integral
70 <int32_t, target_endianness,
71 MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword;
72 typedef support::detail::packed_endian_specific_integral
73 <uint64_t, target_endianness,
74 MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword;
75 typedef support::detail::packed_endian_specific_integral
76 <int64_t, target_endianness,
77 MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword;
81 struct ELFDataTypeTypedefHelper;
84 template<endianness TargetEndianness, std::size_t MaxAlign>
85 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, false> >
86 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
87 typedef uint32_t value_type;
88 typedef support::detail::packed_endian_specific_integral
89 <value_type, TargetEndianness,
90 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
91 typedef support::detail::packed_endian_specific_integral
92 <value_type, TargetEndianness,
93 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
97 template<endianness TargetEndianness, std::size_t MaxAlign>
98 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, true> >
99 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
100 typedef uint64_t value_type;
101 typedef support::detail::packed_endian_specific_integral
102 <value_type, TargetEndianness,
103 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
104 typedef support::detail::packed_endian_specific_integral
105 <value_type, TargetEndianness,
106 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
109 // I really don't like doing this, but the alternative is copypasta.
110 #define LLVM_ELF_IMPORT_TYPES(E, M, W) \
111 typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Addr Elf_Addr; \
112 typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Off Elf_Off; \
113 typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Half Elf_Half; \
114 typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Word Elf_Word; \
116 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sword Elf_Sword; \
118 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Xword Elf_Xword; \
120 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sxword Elf_Sxword;
122 #define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) \
123 LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::MaxAlignment, \
128 struct Elf_Shdr_Base;
130 template<endianness TargetEndianness, std::size_t MaxAlign>
131 struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, false> > {
132 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
133 Elf_Word sh_name; // Section name (index into string table)
134 Elf_Word sh_type; // Section type (SHT_*)
135 Elf_Word sh_flags; // Section flags (SHF_*)
136 Elf_Addr sh_addr; // Address where section is to be loaded
137 Elf_Off sh_offset; // File offset of section data, in bytes
138 Elf_Word sh_size; // Size of section, in bytes
139 Elf_Word sh_link; // Section type-specific header table index link
140 Elf_Word sh_info; // Section type-specific extra information
141 Elf_Word sh_addralign;// Section address alignment
142 Elf_Word sh_entsize; // Size of records contained within the section
145 template<endianness TargetEndianness, std::size_t MaxAlign>
146 struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, true> > {
147 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
148 Elf_Word sh_name; // Section name (index into string table)
149 Elf_Word sh_type; // Section type (SHT_*)
150 Elf_Xword sh_flags; // Section flags (SHF_*)
151 Elf_Addr sh_addr; // Address where section is to be loaded
152 Elf_Off sh_offset; // File offset of section data, in bytes
153 Elf_Xword sh_size; // Size of section, in bytes
154 Elf_Word sh_link; // Section type-specific header table index link
155 Elf_Word sh_info; // Section type-specific extra information
156 Elf_Xword sh_addralign;// Section address alignment
157 Elf_Xword sh_entsize; // Size of records contained within the section
161 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
162 using Elf_Shdr_Base<ELFT>::sh_entsize;
163 using Elf_Shdr_Base<ELFT>::sh_size;
165 /// @brief Get the number of entities this section contains if it has any.
166 unsigned getEntityCount() const {
169 return sh_size / sh_entsize;
176 template<endianness TargetEndianness, std::size_t MaxAlign>
177 struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, false> > {
178 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
179 Elf_Word st_name; // Symbol name (index into string table)
180 Elf_Addr st_value; // Value or address associated with the symbol
181 Elf_Word st_size; // Size of the symbol
182 unsigned char st_info; // Symbol's type and binding attributes
183 unsigned char st_other; // Must be zero; reserved
184 Elf_Half st_shndx; // Which section (header table index) it's defined in
187 template<endianness TargetEndianness, std::size_t MaxAlign>
188 struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, true> > {
189 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
190 Elf_Word st_name; // Symbol name (index into string table)
191 unsigned char st_info; // Symbol's type and binding attributes
192 unsigned char st_other; // Must be zero; reserved
193 Elf_Half st_shndx; // Which section (header table index) it's defined in
194 Elf_Addr st_value; // Value or address associated with the symbol
195 Elf_Xword st_size; // Size of the symbol
199 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
200 using Elf_Sym_Base<ELFT>::st_info;
202 // These accessors and mutators correspond to the ELF32_ST_BIND,
203 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
204 unsigned char getBinding() const { return st_info >> 4; }
205 unsigned char getType() const { return st_info & 0x0f; }
206 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
207 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
208 void setBindingAndType(unsigned char b, unsigned char t) {
209 st_info = (b << 4) + (t & 0x0f);
213 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
214 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
216 struct Elf_Versym_Impl {
217 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
218 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
222 struct Elf_Verdaux_Impl;
224 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
225 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
227 struct Elf_Verdef_Impl {
228 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
229 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
230 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
231 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
232 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
233 Elf_Half vd_cnt; // Number of Verdaux entries
234 Elf_Word vd_hash; // Hash of name
235 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
236 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
238 /// Get the first Verdaux entry for this Verdef.
239 const Elf_Verdaux *getAux() const {
240 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
244 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
245 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
247 struct Elf_Verdaux_Impl {
248 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
249 Elf_Word vda_name; // Version name (offset in string table)
250 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
253 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
254 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
256 struct Elf_Verneed_Impl {
257 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
258 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
259 Elf_Half vn_cnt; // Number of associated Vernaux entries
260 Elf_Word vn_file; // Library name (string table offset)
261 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
262 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
265 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
266 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
268 struct Elf_Vernaux_Impl {
269 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
270 Elf_Word vna_hash; // Hash of dependency name
271 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
272 Elf_Half vna_other; // Version index, used in .gnu.version entries
273 Elf_Word vna_name; // Dependency name
274 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
277 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
278 /// table section (.dynamic) look like.
282 template<endianness TargetEndianness, std::size_t MaxAlign>
283 struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, false> > {
284 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
292 template<endianness TargetEndianness, std::size_t MaxAlign>
293 struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, true> > {
294 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
302 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
304 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
305 using Elf_Dyn_Base<ELFT>::d_tag;
306 using Elf_Dyn_Base<ELFT>::d_un;
307 int64_t getTag() const { return d_tag; }
308 uint64_t getVal() const { return d_un.d_val; }
309 uint64_t getPtr() const { return d_un.ptr; }
312 // Elf_Rel: Elf Relocation
313 template<class ELFT, bool isRela>
316 template<endianness TargetEndianness, std::size_t MaxAlign>
317 struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> {
318 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
319 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
320 Elf_Word r_info; // Symbol table index and type of relocation to apply
322 uint32_t getRInfo(bool isMips64EL) const {
326 void setRInfo(uint32_t R) {
331 template<endianness TargetEndianness, std::size_t MaxAlign>
332 struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> {
333 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
334 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
335 Elf_Xword r_info; // Symbol table index and type of relocation to apply
337 uint64_t getRInfo(bool isMips64EL) const {
341 // Mip64 little endian has a "special" encoding of r_info. Instead of one
342 // 64 bit little endian number, it is a little ending 32 bit number followed
343 // by a 32 bit big endian number.
344 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
345 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
348 void setRInfo(uint64_t R) {
349 // FIXME: Add mips64el support.
354 template<endianness TargetEndianness, std::size_t MaxAlign>
355 struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> {
356 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
357 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
358 Elf_Word r_info; // Symbol table index and type of relocation to apply
359 Elf_Sword r_addend; // Compute value for relocatable field by adding this
361 uint32_t getRInfo(bool isMips64EL) const {
365 void setRInfo(uint32_t R) {
370 template<endianness TargetEndianness, std::size_t MaxAlign>
371 struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> {
372 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
373 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
374 Elf_Xword r_info; // Symbol table index and type of relocation to apply
375 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
377 uint64_t getRInfo(bool isMips64EL) const {
378 // Mip64 little endian has a "special" encoding of r_info. Instead of one
379 // 64 bit little endian number, it is a little ending 32 bit number followed
380 // by a 32 bit big endian number.
384 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
385 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
387 void setRInfo(uint64_t R) {
388 // FIXME: Add mips64el support.
393 template<class ELFT, bool isRela>
396 template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
397 struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>, isRela>
398 : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, isRela> {
399 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
401 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
402 // and ELF64_R_INFO macros defined in the ELF specification:
403 uint32_t getSymbol(bool isMips64EL) const {
404 return (uint32_t) (this->getRInfo(isMips64EL) >> 32);
406 uint32_t getType(bool isMips64EL) const {
407 return (uint32_t) (this->getRInfo(isMips64EL) & 0xffffffffL);
409 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
410 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
411 void setSymbolAndType(uint32_t s, uint32_t t) {
412 this->setRInfo(((uint64_t)s << 32) + (t&0xffffffffL));
416 template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
417 struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>, isRela>
418 : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, isRela> {
419 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
421 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
422 // and ELF32_R_INFO macros defined in the ELF specification:
423 uint32_t getSymbol(bool isMips64EL) const {
424 return this->getRInfo(isMips64EL) >> 8;
426 unsigned char getType(bool isMips64EL) const {
427 return (unsigned char) (this->getRInfo(isMips64EL) & 0x0ff);
429 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
430 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
431 void setSymbolAndType(uint32_t s, unsigned char t) {
432 this->setRInfo((s << 8) + t);
437 struct Elf_Ehdr_Impl {
438 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
439 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
440 Elf_Half e_type; // Type of file (see ET_*)
441 Elf_Half e_machine; // Required architecture for this file (see EM_*)
442 Elf_Word e_version; // Must be equal to 1
443 Elf_Addr e_entry; // Address to jump to in order to start program
444 Elf_Off e_phoff; // Program header table's file offset, in bytes
445 Elf_Off e_shoff; // Section header table's file offset, in bytes
446 Elf_Word e_flags; // Processor-specific flags
447 Elf_Half e_ehsize; // Size of ELF header, in bytes
448 Elf_Half e_phentsize;// Size of an entry in the program header table
449 Elf_Half e_phnum; // Number of entries in the program header table
450 Elf_Half e_shentsize;// Size of an entry in the section header table
451 Elf_Half e_shnum; // Number of entries in the section header table
452 Elf_Half e_shstrndx; // Section header table index of section name
454 bool checkMagic() const {
455 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
457 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
458 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
462 struct Elf_Phdr_Impl;
464 template<endianness TargetEndianness, std::size_t MaxAlign>
465 struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, false> > {
466 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
467 Elf_Word p_type; // Type of segment
468 Elf_Off p_offset; // FileOffset where segment is located, in bytes
469 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
470 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
471 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
472 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
473 Elf_Word p_flags; // Segment flags
474 Elf_Word p_align; // Segment alignment constraint
477 template<endianness TargetEndianness, std::size_t MaxAlign>
478 struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, true> > {
479 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
480 Elf_Word p_type; // Type of segment
481 Elf_Word p_flags; // Segment flags
482 Elf_Off p_offset; // FileOffset where segment is located, in bytes
483 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
484 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
485 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
486 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
487 Elf_Xword p_align; // Segment alignment constraint
491 class ELFObjectFile : public ObjectFile {
492 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
495 /// \brief Iterate over constant sized entities.
497 class ELFEntityIterator {
499 typedef ptrdiff_t difference_type;
500 typedef EntT value_type;
501 typedef std::random_access_iterator_tag iterator_category;
502 typedef value_type &reference;
503 typedef value_type *pointer;
505 /// \brief Default construct iterator.
506 ELFEntityIterator() : EntitySize(0), Current(0) {}
507 ELFEntityIterator(uint64_t EntSize, const char *Start)
508 : EntitySize(EntSize)
511 reference operator *() {
512 assert(Current && "Attempted to dereference an invalid iterator!");
513 return *reinterpret_cast<pointer>(Current);
516 pointer operator ->() {
517 assert(Current && "Attempted to dereference an invalid iterator!");
518 return reinterpret_cast<pointer>(Current);
521 bool operator ==(const ELFEntityIterator &Other) {
522 return Current == Other.Current;
525 bool operator !=(const ELFEntityIterator &Other) {
526 return !(*this == Other);
529 ELFEntityIterator &operator ++() {
530 assert(Current && "Attempted to increment an invalid iterator!");
531 Current += EntitySize;
535 ELFEntityIterator operator ++(int) {
536 ELFEntityIterator Tmp = *this;
541 ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
542 EntitySize = Other.EntitySize;
543 Current = Other.Current;
547 difference_type operator -(const ELFEntityIterator &Other) const {
548 assert(EntitySize == Other.EntitySize &&
549 "Subtracting iterators of different EntitiySize!");
550 return (Current - Other.Current) / EntitySize;
553 const char *get() const { return Current; }
560 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
561 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
562 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
563 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
564 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
565 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
566 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
567 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
568 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
569 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
570 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
571 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
572 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
573 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
574 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
575 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
578 // This flag is used for classof, to distinguish ELFObjectFile from
579 // its subclass. If more subclasses will be created, this flag will
580 // have to become an enum.
581 bool isDyldELFObject;
584 typedef SmallVector<const Elf_Shdr *, 2> Sections_t;
585 typedef DenseMap<unsigned, unsigned> IndexMap_t;
586 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
588 const Elf_Ehdr *Header;
589 const Elf_Shdr *SectionHeaderTable;
590 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
591 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
592 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
594 // SymbolTableSections[0] always points to the dynamic string table section
595 // header, or NULL if there is no dynamic string table.
596 Sections_t SymbolTableSections;
597 IndexMap_t SymbolTableSectionsIndexMap;
598 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
600 const Elf_Shdr *dot_dynamic_sec; // .dynamic
601 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
602 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
603 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
605 // Pointer to SONAME entry in dynamic string table
606 // This is set the first time getLoadName is called.
607 mutable const char *dt_soname;
610 // Records for each version index the corresponding Verdef or Vernaux entry.
611 // This is filled the first time LoadVersionMap() is called.
612 class VersionMapEntry : public PointerIntPair<const void*, 1> {
614 // If the integer is 0, this is an Elf_Verdef*.
615 // If the integer is 1, this is an Elf_Vernaux*.
616 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
617 VersionMapEntry(const Elf_Verdef *verdef)
618 : PointerIntPair<const void*, 1>(verdef, 0) { }
619 VersionMapEntry(const Elf_Vernaux *vernaux)
620 : PointerIntPair<const void*, 1>(vernaux, 1) { }
621 bool isNull() const { return getPointer() == NULL; }
622 bool isVerdef() const { return !isNull() && getInt() == 0; }
623 bool isVernaux() const { return !isNull() && getInt() == 1; }
624 const Elf_Verdef *getVerdef() const {
625 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
627 const Elf_Vernaux *getVernaux() const {
628 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
631 mutable SmallVector<VersionMapEntry, 16> VersionMap;
632 void LoadVersionDefs(const Elf_Shdr *sec) const;
633 void LoadVersionNeeds(const Elf_Shdr *ec) const;
634 void LoadVersionMap() const;
636 /// @brief Map sections to an array of relocation sections that reference
637 /// them sorted by section index.
638 RelocMap_t SectionRelocMap;
640 /// @brief Get the relocation section that contains \a Rel.
641 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
642 return getSection(Rel.w.b);
646 bool isRelocationHasAddend(DataRefImpl Rel) const;
648 const T *getEntry(uint16_t Section, uint32_t Entry) const;
650 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
651 const Elf_Shdr *getSection(DataRefImpl index) const;
652 const Elf_Shdr *getSection(uint32_t index) const;
653 const Elf_Rel *getRel(DataRefImpl Rel) const;
654 const Elf_Rela *getRela(DataRefImpl Rela) const;
655 const char *getString(uint32_t section, uint32_t offset) const;
656 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
657 error_code getSymbolVersion(const Elf_Shdr *section,
660 bool &IsDefault) const;
661 void VerifyStrTab(const Elf_Shdr *sh) const;
664 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
665 void validateSymbol(DataRefImpl Symb) const;
666 StringRef getRelocationTypeName(uint32_t Type) const;
669 error_code getSymbolName(const Elf_Shdr *section,
671 StringRef &Res) const;
672 error_code getSectionName(const Elf_Shdr *section,
673 StringRef &Res) const;
674 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
675 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
676 bool &IsDefault) const;
677 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
679 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
680 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
681 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
682 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
683 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
684 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
685 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
686 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
687 virtual error_code getSymbolSection(DataRefImpl Symb,
688 section_iterator &Res) const;
689 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
691 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
692 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
694 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
695 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
696 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
697 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
698 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
699 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
700 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
701 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
702 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
703 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
705 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
706 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
707 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
708 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
710 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
711 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
713 virtual error_code getRelocationNext(DataRefImpl Rel,
714 RelocationRef &Res) const;
715 virtual error_code getRelocationAddress(DataRefImpl Rel,
716 uint64_t &Res) const;
717 virtual error_code getRelocationOffset(DataRefImpl Rel,
718 uint64_t &Res) const;
719 virtual error_code getRelocationSymbol(DataRefImpl Rel,
720 SymbolRef &Res) const;
721 virtual error_code getRelocationType(DataRefImpl Rel,
722 uint64_t &Res) const;
723 virtual error_code getRelocationTypeName(DataRefImpl Rel,
724 SmallVectorImpl<char> &Result) const;
725 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
727 virtual error_code getRelocationValueString(DataRefImpl Rel,
728 SmallVectorImpl<char> &Result) const;
731 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
733 bool isMips64EL() const {
734 return Header->e_machine == ELF::EM_MIPS &&
735 Header->getFileClass() == ELF::ELFCLASS64 &&
736 Header->getDataEncoding() == ELF::ELFDATA2LSB;
739 virtual symbol_iterator begin_symbols() const;
740 virtual symbol_iterator end_symbols() const;
742 virtual symbol_iterator begin_dynamic_symbols() const;
743 virtual symbol_iterator end_dynamic_symbols() const;
745 virtual section_iterator begin_sections() const;
746 virtual section_iterator end_sections() const;
748 virtual library_iterator begin_libraries_needed() const;
749 virtual library_iterator end_libraries_needed() const;
751 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
752 return SymbolTableSections[0];
755 const Elf_Shdr *getDynamicStringTableSectionHeader() const {
756 return dot_dynstr_sec;
759 Elf_Dyn_iterator begin_dynamic_table() const;
760 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
761 /// the section size.
762 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
764 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
765 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
767 return Elf_Sym_iterator(DynSymtab->sh_entsize,
768 (const char *)base() + DynSymtab->sh_offset);
769 return Elf_Sym_iterator(0, 0);
772 Elf_Sym_iterator end_elf_dynamic_symbols() const {
773 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
775 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
776 DynSymtab->sh_offset + DynSymtab->sh_size);
777 return Elf_Sym_iterator(0, 0);
780 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
781 return Elf_Rela_Iter(sec->sh_entsize,
782 (const char *)(base() + sec->sh_offset));
785 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
786 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
787 (base() + sec->sh_offset + sec->sh_size));
790 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
791 return Elf_Rel_Iter(sec->sh_entsize,
792 (const char *)(base() + sec->sh_offset));
795 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
796 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
797 (base() + sec->sh_offset + sec->sh_size));
800 /// \brief Iterate over program header table.
801 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
803 Elf_Phdr_Iter begin_program_headers() const {
804 return Elf_Phdr_Iter(Header->e_phentsize,
805 (const char*)base() + Header->e_phoff);
808 Elf_Phdr_Iter end_program_headers() const {
809 return Elf_Phdr_Iter(Header->e_phentsize,
810 (const char*)base() +
812 (Header->e_phnum * Header->e_phentsize));
815 virtual uint8_t getBytesInAddress() const;
816 virtual StringRef getFileFormatName() const;
817 virtual StringRef getObjectType() const { return "ELF"; }
818 virtual unsigned getArch() const;
819 virtual StringRef getLoadName() const;
820 virtual error_code getSectionContents(const Elf_Shdr *sec,
821 StringRef &Res) const;
823 uint64_t getNumSections() const;
824 uint64_t getStringTableIndex() const;
825 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
826 const Elf_Ehdr *getElfHeader() const;
827 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
828 const Elf_Shdr *getElfSection(section_iterator &It) const;
829 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
830 const Elf_Sym *getElfSymbol(uint32_t index) const;
832 // Methods for type inquiry through isa, cast, and dyn_cast
833 bool isDyldType() const { return isDyldELFObject; }
834 static inline bool classof(const Binary *v) {
835 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
840 // Iterate through the version definitions, and place each Elf_Verdef
841 // in the VersionMap according to its index.
843 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
844 unsigned vd_size = sec->sh_size; // Size of section in bytes
845 unsigned vd_count = sec->sh_info; // Number of Verdef entries
846 const char *sec_start = (const char*)base() + sec->sh_offset;
847 const char *sec_end = sec_start + vd_size;
848 // The first Verdef entry is at the start of the section.
849 const char *p = sec_start;
850 for (unsigned i = 0; i < vd_count; i++) {
851 if (p + sizeof(Elf_Verdef) > sec_end)
852 report_fatal_error("Section ended unexpectedly while scanning "
853 "version definitions.");
854 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
855 if (vd->vd_version != ELF::VER_DEF_CURRENT)
856 report_fatal_error("Unexpected verdef version");
857 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
858 if (index >= VersionMap.size())
859 VersionMap.resize(index+1);
860 VersionMap[index] = VersionMapEntry(vd);
865 // Iterate through the versions needed section, and place each Elf_Vernaux
866 // in the VersionMap according to its index.
868 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
869 unsigned vn_size = sec->sh_size; // Size of section in bytes
870 unsigned vn_count = sec->sh_info; // Number of Verneed entries
871 const char *sec_start = (const char*)base() + sec->sh_offset;
872 const char *sec_end = sec_start + vn_size;
873 // The first Verneed entry is at the start of the section.
874 const char *p = sec_start;
875 for (unsigned i = 0; i < vn_count; i++) {
876 if (p + sizeof(Elf_Verneed) > sec_end)
877 report_fatal_error("Section ended unexpectedly while scanning "
878 "version needed records.");
879 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
880 if (vn->vn_version != ELF::VER_NEED_CURRENT)
881 report_fatal_error("Unexpected verneed version");
882 // Iterate through the Vernaux entries
883 const char *paux = p + vn->vn_aux;
884 for (unsigned j = 0; j < vn->vn_cnt; j++) {
885 if (paux + sizeof(Elf_Vernaux) > sec_end)
886 report_fatal_error("Section ended unexpected while scanning auxiliary "
887 "version needed records.");
888 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
889 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
890 if (index >= VersionMap.size())
891 VersionMap.resize(index+1);
892 VersionMap[index] = VersionMapEntry(vna);
893 paux += vna->vna_next;
900 void ELFObjectFile<ELFT>::LoadVersionMap() const {
901 // If there is no dynamic symtab or version table, there is nothing to do.
902 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
905 // Has the VersionMap already been loaded?
906 if (VersionMap.size() > 0)
909 // The first two version indexes are reserved.
910 // Index 0 is LOCAL, index 1 is GLOBAL.
911 VersionMap.push_back(VersionMapEntry());
912 VersionMap.push_back(VersionMapEntry());
914 if (dot_gnu_version_d_sec)
915 LoadVersionDefs(dot_gnu_version_d_sec);
917 if (dot_gnu_version_r_sec)
918 LoadVersionNeeds(dot_gnu_version_r_sec);
922 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
924 const Elf_Sym *symb = getSymbol(Symb);
925 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
926 // FIXME: We really need to do proper error handling in the case of an invalid
927 // input file. Because we don't use exceptions, I think we'll just pass
928 // an error object around.
930 && SymbolTableSection
931 && symb >= (const Elf_Sym*)(base()
932 + SymbolTableSection->sh_offset)
933 && symb < (const Elf_Sym*)(base()
934 + SymbolTableSection->sh_offset
935 + SymbolTableSection->sh_size)))
936 // FIXME: Proper error handling.
937 report_fatal_error("Symb must point to a valid symbol!");
942 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
943 SymbolRef &Result) const {
944 validateSymbol(Symb);
945 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
948 // Check to see if we are at the end of this symbol table.
949 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
950 // We are at the end. If there are other symbol tables, jump to them.
951 // If the symbol table is .dynsym, we are iterating dynamic symbols,
952 // and there is only one table of these.
955 Symb.d.a = 1; // The 0th symbol in ELF is fake.
957 // Otherwise return the terminator.
958 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
959 Symb.d.a = std::numeric_limits<uint32_t>::max();
960 Symb.d.b = std::numeric_limits<uint32_t>::max();
964 Result = SymbolRef(Symb, this);
965 return object_error::success;
969 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
970 StringRef &Result) const {
971 validateSymbol(Symb);
972 const Elf_Sym *symb = getSymbol(Symb);
973 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
977 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
979 bool &IsDefault) const {
980 DataRefImpl Symb = SymRef.getRawDataRefImpl();
981 validateSymbol(Symb);
982 const Elf_Sym *symb = getSymbol(Symb);
983 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
988 ELF::Elf64_Word ELFObjectFile<ELFT>
989 ::getSymbolTableIndex(const Elf_Sym *symb) const {
990 if (symb->st_shndx == ELF::SHN_XINDEX)
991 return ExtendedSymbolTable.lookup(symb);
992 return symb->st_shndx;
996 const typename ELFObjectFile<ELFT>::Elf_Shdr *
997 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
998 if (symb->st_shndx == ELF::SHN_XINDEX)
999 return getSection(ExtendedSymbolTable.lookup(symb));
1000 if (symb->st_shndx >= ELF::SHN_LORESERVE)
1002 return getSection(symb->st_shndx);
1005 template<class ELFT>
1006 const typename ELFObjectFile<ELFT>::Elf_Ehdr *
1007 ELFObjectFile<ELFT>::getElfHeader() const {
1011 template<class ELFT>
1012 const typename ELFObjectFile<ELFT>::Elf_Shdr *
1013 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
1014 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
1015 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
1018 template<class ELFT>
1019 const typename ELFObjectFile<ELFT>::Elf_Sym *
1020 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
1021 return getSymbol(It->getRawDataRefImpl());
1024 template<class ELFT>
1025 const typename ELFObjectFile<ELFT>::Elf_Sym *
1026 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
1027 DataRefImpl SymbolData;
1028 SymbolData.d.a = index;
1030 return getSymbol(SymbolData);
1033 template<class ELFT>
1034 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1035 uint64_t &Result) const {
1036 validateSymbol(Symb);
1037 const Elf_Sym *symb = getSymbol(Symb);
1038 const Elf_Shdr *Section;
1039 switch (getSymbolTableIndex(symb)) {
1040 case ELF::SHN_COMMON:
1041 // Unintialized symbols have no offset in the object file
1042 case ELF::SHN_UNDEF:
1043 Result = UnknownAddressOrSize;
1044 return object_error::success;
1046 Result = symb->st_value;
1047 return object_error::success;
1048 default: Section = getSection(symb);
1051 switch (symb->getType()) {
1052 case ELF::STT_SECTION:
1053 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1054 return object_error::success;
1056 case ELF::STT_OBJECT:
1057 case ELF::STT_NOTYPE:
1058 Result = symb->st_value +
1059 (Section ? Section->sh_offset : 0);
1060 return object_error::success;
1062 Result = UnknownAddressOrSize;
1063 return object_error::success;
1067 template<class ELFT>
1068 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1069 uint64_t &Result) const {
1070 validateSymbol(Symb);
1071 const Elf_Sym *symb = getSymbol(Symb);
1072 const Elf_Shdr *Section;
1073 switch (getSymbolTableIndex(symb)) {
1074 case ELF::SHN_COMMON:
1075 case ELF::SHN_UNDEF:
1076 Result = UnknownAddressOrSize;
1077 return object_error::success;
1079 Result = symb->st_value;
1080 return object_error::success;
1081 default: Section = getSection(symb);
1084 switch (symb->getType()) {
1085 case ELF::STT_SECTION:
1086 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1087 return object_error::success;
1089 case ELF::STT_OBJECT:
1090 case ELF::STT_NOTYPE:
1092 switch(Header->e_type) {
1095 IsRelocatable = false;
1098 IsRelocatable = true;
1100 Result = symb->st_value;
1102 // Clear the ARM/Thumb indicator flag.
1103 if (Header->e_machine == ELF::EM_ARM)
1106 if (IsRelocatable && Section != 0)
1107 Result += Section->sh_addr;
1108 return object_error::success;
1110 Result = UnknownAddressOrSize;
1111 return object_error::success;
1115 template<class ELFT>
1116 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1117 uint64_t &Result) const {
1118 validateSymbol(Symb);
1119 const Elf_Sym *symb = getSymbol(Symb);
1120 if (symb->st_size == 0)
1121 Result = UnknownAddressOrSize;
1122 Result = symb->st_size;
1123 return object_error::success;
1126 template<class ELFT>
1127 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1128 char &Result) const {
1129 validateSymbol(Symb);
1130 const Elf_Sym *symb = getSymbol(Symb);
1131 const Elf_Shdr *Section = getSection(symb);
1136 switch (Section->sh_type) {
1137 case ELF::SHT_PROGBITS:
1138 case ELF::SHT_DYNAMIC:
1139 switch (Section->sh_flags) {
1140 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1142 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1144 case ELF::SHF_ALLOC:
1145 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1146 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1150 case ELF::SHT_NOBITS: ret = 'b';
1154 switch (getSymbolTableIndex(symb)) {
1155 case ELF::SHN_UNDEF:
1159 case ELF::SHN_ABS: ret = 'a'; break;
1160 case ELF::SHN_COMMON: ret = 'c'; break;
1163 switch (symb->getBinding()) {
1164 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1166 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1169 if (symb->getType() == ELF::STT_OBJECT)
1175 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1177 if (error_code ec = getSymbolName(Symb, name))
1179 Result = StringSwitch<char>(name)
1180 .StartsWith(".debug", 'N')
1181 .StartsWith(".note", 'n')
1183 return object_error::success;
1187 return object_error::success;
1190 template<class ELFT>
1191 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1192 SymbolRef::Type &Result) const {
1193 validateSymbol(Symb);
1194 const Elf_Sym *symb = getSymbol(Symb);
1196 switch (symb->getType()) {
1197 case ELF::STT_NOTYPE:
1198 Result = SymbolRef::ST_Unknown;
1200 case ELF::STT_SECTION:
1201 Result = SymbolRef::ST_Debug;
1204 Result = SymbolRef::ST_File;
1207 Result = SymbolRef::ST_Function;
1209 case ELF::STT_OBJECT:
1210 case ELF::STT_COMMON:
1212 Result = SymbolRef::ST_Data;
1215 Result = SymbolRef::ST_Other;
1218 return object_error::success;
1221 template<class ELFT>
1222 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1223 uint32_t &Result) const {
1224 validateSymbol(Symb);
1225 const Elf_Sym *symb = getSymbol(Symb);
1227 Result = SymbolRef::SF_None;
1229 if (symb->getBinding() != ELF::STB_LOCAL)
1230 Result |= SymbolRef::SF_Global;
1232 if (symb->getBinding() == ELF::STB_WEAK)
1233 Result |= SymbolRef::SF_Weak;
1235 if (symb->st_shndx == ELF::SHN_ABS)
1236 Result |= SymbolRef::SF_Absolute;
1238 if (symb->getType() == ELF::STT_FILE ||
1239 symb->getType() == ELF::STT_SECTION)
1240 Result |= SymbolRef::SF_FormatSpecific;
1242 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1243 Result |= SymbolRef::SF_Undefined;
1245 if (symb->getType() == ELF::STT_COMMON ||
1246 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1247 Result |= SymbolRef::SF_Common;
1249 if (symb->getType() == ELF::STT_TLS)
1250 Result |= SymbolRef::SF_ThreadLocal;
1252 return object_error::success;
1255 template<class ELFT>
1256 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1257 section_iterator &Res) const {
1258 validateSymbol(Symb);
1259 const Elf_Sym *symb = getSymbol(Symb);
1260 const Elf_Shdr *sec = getSection(symb);
1262 Res = end_sections();
1265 Sec.p = reinterpret_cast<intptr_t>(sec);
1266 Res = section_iterator(SectionRef(Sec, this));
1268 return object_error::success;
1271 template<class ELFT>
1272 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1273 uint64_t &Val) const {
1274 validateSymbol(Symb);
1275 const Elf_Sym *symb = getSymbol(Symb);
1276 Val = symb->st_value;
1277 return object_error::success;
1280 template<class ELFT>
1281 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1282 SectionRef &Result) const {
1283 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1284 sec += Header->e_shentsize;
1285 Sec.p = reinterpret_cast<intptr_t>(sec);
1286 Result = SectionRef(Sec, this);
1287 return object_error::success;
1290 template<class ELFT>
1291 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1292 StringRef &Result) const {
1293 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1294 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1295 return object_error::success;
1298 template<class ELFT>
1299 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1300 uint64_t &Result) const {
1301 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1302 Result = sec->sh_addr;
1303 return object_error::success;
1306 template<class ELFT>
1307 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1308 uint64_t &Result) const {
1309 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1310 Result = sec->sh_size;
1311 return object_error::success;
1314 template<class ELFT>
1315 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1316 StringRef &Result) const {
1317 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1318 const char *start = (const char*)base() + sec->sh_offset;
1319 Result = StringRef(start, sec->sh_size);
1320 return object_error::success;
1323 template<class ELFT>
1324 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1325 StringRef &Result) const {
1326 const char *start = (const char*)base() + Sec->sh_offset;
1327 Result = StringRef(start, Sec->sh_size);
1328 return object_error::success;
1331 template<class ELFT>
1332 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1333 uint64_t &Result) const {
1334 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1335 Result = sec->sh_addralign;
1336 return object_error::success;
1339 template<class ELFT>
1340 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1341 bool &Result) const {
1342 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1343 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1347 return object_error::success;
1350 template<class ELFT>
1351 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1352 bool &Result) const {
1353 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1354 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1355 && sec->sh_type == ELF::SHT_PROGBITS)
1359 return object_error::success;
1362 template<class ELFT>
1363 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1364 bool &Result) const {
1365 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1366 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1367 && sec->sh_type == ELF::SHT_NOBITS)
1371 return object_error::success;
1374 template<class ELFT>
1375 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1376 DataRefImpl Sec, bool &Result) const {
1377 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1378 if (sec->sh_flags & ELF::SHF_ALLOC)
1382 return object_error::success;
1385 template<class ELFT>
1386 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1387 bool &Result) const {
1388 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1389 if (sec->sh_type == ELF::SHT_NOBITS)
1393 return object_error::success;
1396 template<class ELFT>
1397 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1398 bool &Result) const {
1399 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1400 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1401 // in the object image) and vice versa.
1402 Result = sec->sh_type == ELF::SHT_NOBITS;
1403 return object_error::success;
1406 template<class ELFT>
1407 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1408 bool &Result) const {
1409 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1410 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1414 return object_error::success;
1417 template<class ELFT>
1418 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1420 bool &Result) const {
1421 validateSymbol(Symb);
1423 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1424 const Elf_Sym *symb = getSymbol(Symb);
1426 unsigned shndx = symb->st_shndx;
1427 bool Reserved = shndx >= ELF::SHN_LORESERVE
1428 && shndx <= ELF::SHN_HIRESERVE;
1430 Result = !Reserved && (sec == getSection(symb->st_shndx));
1431 return object_error::success;
1434 template<class ELFT>
1436 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1437 DataRefImpl RelData;
1438 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1439 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1440 if (sec != 0 && ittr != SectionRelocMap.end()) {
1441 RelData.w.a = getSection(ittr->second[0])->sh_info;
1442 RelData.w.b = ittr->second[0];
1445 return relocation_iterator(RelocationRef(RelData, this));
1448 template<class ELFT>
1450 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1451 DataRefImpl RelData;
1452 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1453 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1454 if (sec != 0 && ittr != SectionRelocMap.end()) {
1455 // Get the index of the last relocation section for this section.
1456 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1457 const Elf_Shdr *relocsec = getSection(relocsecindex);
1458 RelData.w.a = relocsec->sh_info;
1459 RelData.w.b = relocsecindex;
1460 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1462 return relocation_iterator(RelocationRef(RelData, this));
1466 template<class ELFT>
1467 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1468 RelocationRef &Result) const {
1470 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1471 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1472 // We have reached the end of the relocations for this section. See if there
1473 // is another relocation section.
1474 typename RelocMap_t::mapped_type relocseclist =
1475 SectionRelocMap.lookup(getSection(Rel.w.a));
1477 // Do a binary search for the current reloc section index (which must be
1478 // present). Then get the next one.
1479 typename RelocMap_t::mapped_type::const_iterator loc =
1480 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1483 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1484 // to the end iterator.
1485 if (loc != relocseclist.end()) {
1490 Result = RelocationRef(Rel, this);
1491 return object_error::success;
1494 template<class ELFT>
1495 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1496 SymbolRef &Result) const {
1498 const Elf_Shdr *sec = getSection(Rel.w.b);
1499 switch (sec->sh_type) {
1501 report_fatal_error("Invalid section type in Rel!");
1502 case ELF::SHT_REL : {
1503 symbolIdx = getRel(Rel)->getSymbol(isMips64EL());
1506 case ELF::SHT_RELA : {
1507 symbolIdx = getRela(Rel)->getSymbol(isMips64EL());
1511 DataRefImpl SymbolData;
1512 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1513 if (it == SymbolTableSectionsIndexMap.end())
1514 report_fatal_error("Relocation symbol table not found!");
1515 SymbolData.d.a = symbolIdx;
1516 SymbolData.d.b = it->second;
1517 Result = SymbolRef(SymbolData, this);
1518 return object_error::success;
1521 template<class ELFT>
1522 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1523 uint64_t &Result) const {
1525 const Elf_Shdr *sec = getSection(Rel.w.b);
1526 switch (sec->sh_type) {
1528 report_fatal_error("Invalid section type in Rel!");
1529 case ELF::SHT_REL : {
1530 offset = getRel(Rel)->r_offset;
1533 case ELF::SHT_RELA : {
1534 offset = getRela(Rel)->r_offset;
1540 return object_error::success;
1543 template<class ELFT>
1544 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1545 uint64_t &Result) const {
1547 const Elf_Shdr *sec = getSection(Rel.w.b);
1548 switch (sec->sh_type) {
1550 report_fatal_error("Invalid section type in Rel!");
1551 case ELF::SHT_REL : {
1552 offset = getRel(Rel)->r_offset;
1555 case ELF::SHT_RELA : {
1556 offset = getRela(Rel)->r_offset;
1561 Result = offset - sec->sh_addr;
1562 return object_error::success;
1565 template<class ELFT>
1566 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1567 uint64_t &Result) const {
1568 const Elf_Shdr *sec = getSection(Rel.w.b);
1569 switch (sec->sh_type) {
1571 report_fatal_error("Invalid section type in Rel!");
1572 case ELF::SHT_REL : {
1573 Result = getRel(Rel)->getType(isMips64EL());
1576 case ELF::SHT_RELA : {
1577 Result = getRela(Rel)->getType(isMips64EL());
1581 return object_error::success;
1584 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1585 case ELF::enum: Res = #enum; break;
1587 template<class ELFT>
1588 StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
1589 StringRef Res = "Unknown";
1590 switch (Header->e_machine) {
1591 case ELF::EM_X86_64:
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT64);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL64);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC64);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPLT64);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLTOFF64);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_IRELATIVE);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NUM);
1736 case ELF::EM_AARCH64:
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1950 case ELF::EM_HEXAGON:
1952 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1953 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1954 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1955 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1956 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1985 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1986 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1987 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1988 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1989 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1990 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
2012 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
2013 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
2014 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
2015 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
2016 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
2017 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
2018 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
2019 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
2020 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
2021 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
2022 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
2023 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
2024 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
2025 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2026 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2027 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2028 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2029 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2030 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2031 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2032 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2033 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2034 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2035 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2036 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2037 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2043 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_NONE);
2044 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR32);
2045 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR24);
2046 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16);
2047 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_LO);
2048 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HI);
2049 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HA);
2050 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14);
2051 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRTAKEN);
2052 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRNTAKEN);
2053 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL24);
2054 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14);
2055 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRTAKEN);
2056 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRNTAKEN);
2057 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32);
2058 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_LO);
2059 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HA);
2065 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_NONE);
2066 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR32);
2067 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO);
2068 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HI);
2069 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14);
2070 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL24);
2071 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32);
2072 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64);
2073 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER);
2074 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST);
2075 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64);
2076 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16);
2077 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO);
2078 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA);
2079 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC);
2080 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS);
2081 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO_DS);
2082 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_DS);
2083 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO_DS);
2084 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLS);
2085 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO);
2086 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HA);
2087 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO);
2088 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HA);
2089 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_LO);
2090 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HA);
2091 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_LO);
2092 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HA);
2093 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_LO_DS);
2094 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HA);
2095 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSGD);
2096 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSLD);
2105 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2107 template<class ELFT>
2108 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
2109 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2110 const Elf_Shdr *sec = getSection(Rel.w.b);
2112 switch (sec->sh_type) {
2114 return object_error::parse_failed;
2115 case ELF::SHT_REL : {
2116 type = getRel(Rel)->getType(isMips64EL());
2119 case ELF::SHT_RELA : {
2120 type = getRela(Rel)->getType(isMips64EL());
2125 if (!isMips64EL()) {
2126 StringRef Name = getRelocationTypeName(type);
2127 Result.append(Name.begin(), Name.end());
2129 uint8_t Type1 = (type >> 0) & 0xFF;
2130 uint8_t Type2 = (type >> 8) & 0xFF;
2131 uint8_t Type3 = (type >> 16) & 0xFF;
2133 // Concat all three relocation type names.
2134 StringRef Name = getRelocationTypeName(Type1);
2135 Result.append(Name.begin(), Name.end());
2137 Name = getRelocationTypeName(Type2);
2138 Result.append(1, '/');
2139 Result.append(Name.begin(), Name.end());
2141 Name = getRelocationTypeName(Type3);
2142 Result.append(1, '/');
2143 Result.append(Name.begin(), Name.end());
2146 return object_error::success;
2149 template<class ELFT>
2150 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
2151 DataRefImpl Rel, int64_t &Result) const {
2152 const Elf_Shdr *sec = getSection(Rel.w.b);
2153 switch (sec->sh_type) {
2155 report_fatal_error("Invalid section type in Rel!");
2156 case ELF::SHT_REL : {
2158 return object_error::success;
2160 case ELF::SHT_RELA : {
2161 Result = getRela(Rel)->r_addend;
2162 return object_error::success;
2167 template<class ELFT>
2168 error_code ELFObjectFile<ELFT>::getRelocationValueString(
2169 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2170 const Elf_Shdr *sec = getSection(Rel.w.b);
2174 uint16_t symbol_index = 0;
2175 switch (sec->sh_type) {
2177 return object_error::parse_failed;
2178 case ELF::SHT_REL: {
2179 type = getRel(Rel)->getType(isMips64EL());
2180 symbol_index = getRel(Rel)->getSymbol(isMips64EL());
2181 // TODO: Read implicit addend from section data.
2184 case ELF::SHT_RELA: {
2185 type = getRela(Rel)->getType(isMips64EL());
2186 symbol_index = getRela(Rel)->getSymbol(isMips64EL());
2187 addend = getRela(Rel)->r_addend;
2191 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2193 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2195 switch (Header->e_machine) {
2196 case ELF::EM_X86_64:
2198 case ELF::R_X86_64_PC8:
2199 case ELF::R_X86_64_PC16:
2200 case ELF::R_X86_64_PC32: {
2202 raw_string_ostream fmt(fmtbuf);
2203 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2205 Result.append(fmtbuf.begin(), fmtbuf.end());
2208 case ELF::R_X86_64_8:
2209 case ELF::R_X86_64_16:
2210 case ELF::R_X86_64_32:
2211 case ELF::R_X86_64_32S:
2212 case ELF::R_X86_64_64: {
2214 raw_string_ostream fmt(fmtbuf);
2215 fmt << symname << (addend < 0 ? "" : "+") << addend;
2217 Result.append(fmtbuf.begin(), fmtbuf.end());
2224 case ELF::EM_AARCH64:
2226 case ELF::EM_HEXAGON:
2233 Result.append(res.begin(), res.end());
2234 return object_error::success;
2237 // Verify that the last byte in the string table in a null.
2238 template<class ELFT>
2239 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2240 const char *strtab = (const char*)base() + sh->sh_offset;
2241 if (strtab[sh->sh_size - 1] != 0)
2242 // FIXME: Proper error handling.
2243 report_fatal_error("String table must end with a null terminator!");
2246 template<class ELFT>
2247 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2248 : ObjectFile(getELFType(
2249 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2252 , isDyldELFObject(false)
2253 , SectionHeaderTable(0)
2254 , dot_shstrtab_sec(0)
2257 , dot_dynamic_sec(0)
2258 , dot_gnu_version_sec(0)
2259 , dot_gnu_version_r_sec(0)
2260 , dot_gnu_version_d_sec(0)
2264 const uint64_t FileSize = Data->getBufferSize();
2266 if (sizeof(Elf_Ehdr) > FileSize)
2267 // FIXME: Proper error handling.
2268 report_fatal_error("File too short!");
2270 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2272 if (Header->e_shoff == 0)
2275 const uint64_t SectionTableOffset = Header->e_shoff;
2277 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2278 // FIXME: Proper error handling.
2279 report_fatal_error("Section header table goes past end of file!");
2281 // The getNumSections() call below depends on SectionHeaderTable being set.
2282 SectionHeaderTable =
2283 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2284 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2286 if (SectionTableOffset + SectionTableSize > FileSize)
2287 // FIXME: Proper error handling.
2288 report_fatal_error("Section table goes past end of file!");
2290 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2291 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2292 const Elf_Shdr* sh = SectionHeaderTable;
2294 // Reserve SymbolTableSections[0] for .dynsym
2295 SymbolTableSections.push_back(NULL);
2297 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2298 switch (sh->sh_type) {
2299 case ELF::SHT_SYMTAB_SHNDX: {
2300 if (SymbolTableSectionHeaderIndex)
2301 // FIXME: Proper error handling.
2302 report_fatal_error("More than one .symtab_shndx!");
2303 SymbolTableSectionHeaderIndex = sh;
2306 case ELF::SHT_SYMTAB: {
2307 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2308 SymbolTableSections.push_back(sh);
2311 case ELF::SHT_DYNSYM: {
2312 if (SymbolTableSections[0] != NULL)
2313 // FIXME: Proper error handling.
2314 report_fatal_error("More than one .dynsym!");
2315 SymbolTableSectionsIndexMap[i] = 0;
2316 SymbolTableSections[0] = sh;
2320 case ELF::SHT_RELA: {
2321 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2324 case ELF::SHT_DYNAMIC: {
2325 if (dot_dynamic_sec != NULL)
2326 // FIXME: Proper error handling.
2327 report_fatal_error("More than one .dynamic!");
2328 dot_dynamic_sec = sh;
2331 case ELF::SHT_GNU_versym: {
2332 if (dot_gnu_version_sec != NULL)
2333 // FIXME: Proper error handling.
2334 report_fatal_error("More than one .gnu.version section!");
2335 dot_gnu_version_sec = sh;
2338 case ELF::SHT_GNU_verdef: {
2339 if (dot_gnu_version_d_sec != NULL)
2340 // FIXME: Proper error handling.
2341 report_fatal_error("More than one .gnu.version_d section!");
2342 dot_gnu_version_d_sec = sh;
2345 case ELF::SHT_GNU_verneed: {
2346 if (dot_gnu_version_r_sec != NULL)
2347 // FIXME: Proper error handling.
2348 report_fatal_error("More than one .gnu.version_r section!");
2349 dot_gnu_version_r_sec = sh;
2356 // Sort section relocation lists by index.
2357 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2358 e = SectionRelocMap.end(); i != e; ++i) {
2359 std::sort(i->second.begin(), i->second.end());
2362 // Get string table sections.
2363 dot_shstrtab_sec = getSection(getStringTableIndex());
2364 if (dot_shstrtab_sec) {
2365 // Verify that the last byte in the string table in a null.
2366 VerifyStrTab(dot_shstrtab_sec);
2369 // Merge this into the above loop.
2370 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2371 *e = i + getNumSections() * Header->e_shentsize;
2372 i != e; i += Header->e_shentsize) {
2373 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2374 if (sh->sh_type == ELF::SHT_STRTAB) {
2375 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2376 if (SectionName == ".strtab") {
2377 if (dot_strtab_sec != 0)
2378 // FIXME: Proper error handling.
2379 report_fatal_error("Already found section named .strtab!");
2380 dot_strtab_sec = sh;
2381 VerifyStrTab(dot_strtab_sec);
2382 } else if (SectionName == ".dynstr") {
2383 if (dot_dynstr_sec != 0)
2384 // FIXME: Proper error handling.
2385 report_fatal_error("Already found section named .dynstr!");
2386 dot_dynstr_sec = sh;
2387 VerifyStrTab(dot_dynstr_sec);
2392 // Build symbol name side-mapping if there is one.
2393 if (SymbolTableSectionHeaderIndex) {
2394 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2395 SymbolTableSectionHeaderIndex->sh_offset);
2397 for (symbol_iterator si = begin_symbols(),
2398 se = end_symbols(); si != se; si.increment(ec)) {
2400 report_fatal_error("Fewer extended symbol table entries than symbols!");
2401 if (*ShndxTable != ELF::SHN_UNDEF)
2402 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2408 // Get the symbol table index in the symtab section given a symbol
2409 template<class ELFT>
2410 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2411 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2412 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2413 uintptr_t SymLoc = uintptr_t(Sym);
2414 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2415 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2416 uint64_t SymOffset = SymLoc - SymTabLoc;
2417 assert(SymOffset % SymTab->sh_entsize == 0 &&
2418 "Symbol not multiple of symbol size!");
2419 return SymOffset / SymTab->sh_entsize;
2422 template<class ELFT>
2423 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2424 DataRefImpl SymbolData;
2425 if (SymbolTableSections.size() <= 1) {
2426 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2427 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2429 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2430 SymbolData.d.b = 1; // The 0th table is .dynsym
2432 return symbol_iterator(SymbolRef(SymbolData, this));
2435 template<class ELFT>
2436 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2437 DataRefImpl SymbolData;
2438 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2439 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2440 return symbol_iterator(SymbolRef(SymbolData, this));
2443 template<class ELFT>
2444 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2445 DataRefImpl SymbolData;
2446 if (SymbolTableSections[0] == NULL) {
2447 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2448 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2450 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2451 SymbolData.d.b = 0; // The 0th table is .dynsym
2453 return symbol_iterator(SymbolRef(SymbolData, this));
2456 template<class ELFT>
2457 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2458 DataRefImpl SymbolData;
2459 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2460 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2461 return symbol_iterator(SymbolRef(SymbolData, this));
2464 template<class ELFT>
2465 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2467 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2468 return section_iterator(SectionRef(ret, this));
2471 template<class ELFT>
2472 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2474 ret.p = reinterpret_cast<intptr_t>(base()
2476 + (Header->e_shentsize*getNumSections()));
2477 return section_iterator(SectionRef(ret, this));
2480 template<class ELFT>
2481 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2482 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2483 if (dot_dynamic_sec)
2484 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2485 (const char *)base() + dot_dynamic_sec->sh_offset);
2486 return Elf_Dyn_iterator(0, 0);
2489 template<class ELFT>
2490 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2491 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2492 if (dot_dynamic_sec) {
2493 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2494 (const char *)base() + dot_dynamic_sec->sh_offset +
2495 dot_dynamic_sec->sh_size);
2498 Elf_Dyn_iterator Start = begin_dynamic_table();
2499 while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2502 // Include the DT_NULL.
2509 return Elf_Dyn_iterator(0, 0);
2512 template<class ELFT>
2513 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2515 // Find the DT_SONAME entry
2516 Elf_Dyn_iterator it = begin_dynamic_table();
2517 Elf_Dyn_iterator ie = end_dynamic_table();
2518 while (it != ie && it->getTag() != ELF::DT_SONAME)
2522 if (dot_dynstr_sec == NULL)
2523 report_fatal_error("Dynamic string table is missing");
2524 dt_soname = getString(dot_dynstr_sec, it->getVal());
2532 template<class ELFT>
2533 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2534 // Find the first DT_NEEDED entry
2535 Elf_Dyn_iterator i = begin_dynamic_table();
2536 Elf_Dyn_iterator e = end_dynamic_table();
2537 while (i != e && i->getTag() != ELF::DT_NEEDED)
2541 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2542 return library_iterator(LibraryRef(DRI, this));
2545 template<class ELFT>
2546 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2547 LibraryRef &Result) const {
2548 // Use the same DataRefImpl format as DynRef.
2549 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2550 reinterpret_cast<const char *>(Data.p));
2551 Elf_Dyn_iterator e = end_dynamic_table();
2553 // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2556 while (i != e && i->getTag() != ELF::DT_NEEDED);
2559 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2560 Result = LibraryRef(DRI, this);
2561 return object_error::success;
2564 template<class ELFT>
2565 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2566 StringRef &Res) const {
2567 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2568 reinterpret_cast<const char *>(Data.p));
2569 if (i == end_dynamic_table())
2570 report_fatal_error("getLibraryPath() called on iterator end");
2572 if (i->getTag() != ELF::DT_NEEDED)
2573 report_fatal_error("Invalid library_iterator");
2575 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2576 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2577 // the time, but the specification allows exceptions.
2578 // TODO: This should really use DT_STRTAB instead. Doing this requires
2579 // reading the program headers.
2580 if (dot_dynstr_sec == NULL)
2581 report_fatal_error("Dynamic string table is missing");
2582 Res = getString(dot_dynstr_sec, i->getVal());
2583 return object_error::success;
2586 template<class ELFT>
2587 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2588 Elf_Dyn_iterator e = end_dynamic_table();
2590 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2591 return library_iterator(LibraryRef(DRI, this));
2594 template<class ELFT>
2595 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2596 return ELFT::Is64Bits ? 8 : 4;
2599 template<class ELFT>
2600 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2601 switch(Header->e_ident[ELF::EI_CLASS]) {
2602 case ELF::ELFCLASS32:
2603 switch(Header->e_machine) {
2605 return "ELF32-i386";
2606 case ELF::EM_X86_64:
2607 return "ELF32-x86-64";
2610 case ELF::EM_HEXAGON:
2611 return "ELF32-hexagon";
2613 return "ELF32-mips";
2615 return "ELF32-unknown";
2617 case ELF::ELFCLASS64:
2618 switch(Header->e_machine) {
2620 return "ELF64-i386";
2621 case ELF::EM_X86_64:
2622 return "ELF64-x86-64";
2623 case ELF::EM_AARCH64:
2624 return "ELF64-aarch64";
2626 return "ELF64-ppc64";
2628 return "ELF64-unknown";
2631 // FIXME: Proper error handling.
2632 report_fatal_error("Invalid ELFCLASS!");
2636 template<class ELFT>
2637 unsigned ELFObjectFile<ELFT>::getArch() const {
2638 switch(Header->e_machine) {
2641 case ELF::EM_X86_64:
2642 return Triple::x86_64;
2643 case ELF::EM_AARCH64:
2644 return Triple::aarch64;
2647 case ELF::EM_HEXAGON:
2648 return Triple::hexagon;
2650 return (ELFT::TargetEndianness == support::little) ?
2651 Triple::mipsel : Triple::mips;
2653 return Triple::ppc64;
2655 return Triple::UnknownArch;
2659 template<class ELFT>
2660 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2661 assert(Header && "Header not initialized!");
2662 if (Header->e_shnum == ELF::SHN_UNDEF) {
2663 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2664 return SectionHeaderTable->sh_size;
2666 return Header->e_shnum;
2669 template<class ELFT>
2671 ELFObjectFile<ELFT>::getStringTableIndex() const {
2672 if (Header->e_shnum == ELF::SHN_UNDEF) {
2673 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2674 return SectionHeaderTable->sh_link;
2675 if (Header->e_shstrndx >= getNumSections())
2678 return Header->e_shstrndx;
2681 template<class ELFT>
2682 template<typename T>
2684 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2685 return getEntry<T>(getSection(Section), Entry);
2688 template<class ELFT>
2689 template<typename T>
2691 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2692 return reinterpret_cast<const T *>(
2694 + Section->sh_offset
2695 + (Entry * Section->sh_entsize));
2698 template<class ELFT>
2699 const typename ELFObjectFile<ELFT>::Elf_Sym *
2700 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2701 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2704 template<class ELFT>
2705 const typename ELFObjectFile<ELFT>::Elf_Rel *
2706 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2707 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2710 template<class ELFT>
2711 const typename ELFObjectFile<ELFT>::Elf_Rela *
2712 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2713 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2716 template<class ELFT>
2717 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2718 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2719 const Elf_Shdr *sec = getSection(Symb.d.b);
2720 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2721 // FIXME: Proper error handling.
2722 report_fatal_error("Invalid symbol table section!");
2726 template<class ELFT>
2727 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2728 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2731 if (!SectionHeaderTable || index >= getNumSections())
2732 // FIXME: Proper error handling.
2733 report_fatal_error("Invalid section index!");
2735 return reinterpret_cast<const Elf_Shdr *>(
2736 reinterpret_cast<const char *>(SectionHeaderTable)
2737 + (index * Header->e_shentsize));
2740 template<class ELFT>
2741 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2742 ELF::Elf32_Word offset) const {
2743 return getString(getSection(section), offset);
2746 template<class ELFT>
2747 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2748 ELF::Elf32_Word offset) const {
2749 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2750 if (offset >= section->sh_size)
2751 // FIXME: Proper error handling.
2752 report_fatal_error("Symbol name offset outside of string table!");
2753 return (const char *)base() + section->sh_offset + offset;
2756 template<class ELFT>
2757 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2758 const Elf_Sym *symb,
2759 StringRef &Result) const {
2760 if (symb->st_name == 0) {
2761 const Elf_Shdr *section = getSection(symb);
2765 Result = getString(dot_shstrtab_sec, section->sh_name);
2766 return object_error::success;
2769 if (section == SymbolTableSections[0]) {
2770 // Symbol is in .dynsym, use .dynstr string table
2771 Result = getString(dot_dynstr_sec, symb->st_name);
2773 // Use the default symbol table name section.
2774 Result = getString(dot_strtab_sec, symb->st_name);
2776 return object_error::success;
2779 template<class ELFT>
2780 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2781 StringRef &Result) const {
2782 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2783 return object_error::success;
2786 template<class ELFT>
2787 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2788 const Elf_Sym *symb,
2790 bool &IsDefault) const {
2791 // Handle non-dynamic symbols.
2792 if (section != SymbolTableSections[0]) {
2793 // Non-dynamic symbols can have versions in their names
2794 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2795 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2797 error_code ec = getSymbolName(section, symb, Name);
2798 if (ec != object_error::success)
2800 size_t atpos = Name.find('@');
2801 if (atpos == StringRef::npos) {
2804 return object_error::success;
2807 if (atpos < Name.size() && Name[atpos] == '@') {
2813 Version = Name.substr(atpos);
2814 return object_error::success;
2817 // This is a dynamic symbol. Look in the GNU symbol version table.
2818 if (dot_gnu_version_sec == NULL) {
2819 // No version table.
2822 return object_error::success;
2825 // Determine the position in the symbol table of this entry.
2826 const char *sec_start = (const char*)base() + section->sh_offset;
2827 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2829 // Get the corresponding version index entry
2830 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2831 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2833 // Special markers for unversioned symbols.
2834 if (version_index == ELF::VER_NDX_LOCAL ||
2835 version_index == ELF::VER_NDX_GLOBAL) {
2838 return object_error::success;
2841 // Lookup this symbol in the version table
2843 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2844 report_fatal_error("Symbol has version index without corresponding "
2845 "define or reference entry");
2846 const VersionMapEntry &entry = VersionMap[version_index];
2848 // Get the version name string
2850 if (entry.isVerdef()) {
2851 // The first Verdaux entry holds the name.
2852 name_offset = entry.getVerdef()->getAux()->vda_name;
2854 name_offset = entry.getVernaux()->vna_name;
2856 Version = getString(dot_dynstr_sec, name_offset);
2859 if (entry.isVerdef()) {
2860 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2865 return object_error::success;
2868 /// This is a generic interface for retrieving GNU symbol version
2869 /// information from an ELFObjectFile.
2870 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2871 const SymbolRef &Sym,
2874 // Little-endian 32-bit
2875 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2876 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2877 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2879 // Big-endian 32-bit
2880 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2881 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2882 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2884 // Little-endian 64-bit
2885 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2886 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2887 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2889 // Big-endian 64-bit
2890 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2891 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2892 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2894 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2897 /// This function returns the hash value for a symbol in the .dynsym section
2898 /// Name of the API remains consistent as specified in the libelf
2899 /// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
2900 static inline unsigned elf_hash(StringRef &symbolName) {
2902 for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
2903 h = (h << 4) + symbolName[i];
2904 g = h & 0xf0000000L;