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 uint64_t getROffset(DataRefImpl Rel) const;
612 // Records for each version index the corresponding Verdef or Vernaux entry.
613 // This is filled the first time LoadVersionMap() is called.
614 class VersionMapEntry : public PointerIntPair<const void*, 1> {
616 // If the integer is 0, this is an Elf_Verdef*.
617 // If the integer is 1, this is an Elf_Vernaux*.
618 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
619 VersionMapEntry(const Elf_Verdef *verdef)
620 : PointerIntPair<const void*, 1>(verdef, 0) { }
621 VersionMapEntry(const Elf_Vernaux *vernaux)
622 : PointerIntPair<const void*, 1>(vernaux, 1) { }
623 bool isNull() const { return getPointer() == NULL; }
624 bool isVerdef() const { return !isNull() && getInt() == 0; }
625 bool isVernaux() const { return !isNull() && getInt() == 1; }
626 const Elf_Verdef *getVerdef() const {
627 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
629 const Elf_Vernaux *getVernaux() const {
630 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
633 mutable SmallVector<VersionMapEntry, 16> VersionMap;
634 void LoadVersionDefs(const Elf_Shdr *sec) const;
635 void LoadVersionNeeds(const Elf_Shdr *ec) const;
636 void LoadVersionMap() const;
638 /// @brief Map sections to an array of relocation sections that reference
639 /// them sorted by section index.
640 RelocMap_t SectionRelocMap;
642 /// @brief Get the relocation section that contains \a Rel.
643 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
644 return getSection(Rel.w.b);
648 bool isRelocationHasAddend(DataRefImpl Rel) const;
650 const T *getEntry(uint16_t Section, uint32_t Entry) const;
652 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
653 const Elf_Shdr *getSection(DataRefImpl index) const;
654 const Elf_Shdr *getSection(uint32_t index) const;
655 const Elf_Rel *getRel(DataRefImpl Rel) const;
656 const Elf_Rela *getRela(DataRefImpl Rela) const;
657 const char *getString(uint32_t section, uint32_t offset) const;
658 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
659 error_code getSymbolVersion(const Elf_Shdr *section,
662 bool &IsDefault) const;
663 void VerifyStrTab(const Elf_Shdr *sh) const;
666 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
667 void validateSymbol(DataRefImpl Symb) const;
668 StringRef getRelocationTypeName(uint32_t Type) const;
671 error_code getSymbolName(const Elf_Shdr *section,
673 StringRef &Res) const;
674 error_code getSectionName(const Elf_Shdr *section,
675 StringRef &Res) const;
676 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
677 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
678 bool &IsDefault) const;
679 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
681 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
682 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
683 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
684 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
685 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
686 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
687 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
688 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
689 virtual error_code getSymbolSection(DataRefImpl Symb,
690 section_iterator &Res) const;
691 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
693 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
694 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
696 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
697 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
698 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
699 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
700 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
701 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
702 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
703 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
704 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
705 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
707 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
708 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
709 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
710 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
712 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
713 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
715 virtual error_code getRelocationNext(DataRefImpl Rel,
716 RelocationRef &Res) const;
717 virtual error_code getRelocationAddress(DataRefImpl Rel,
718 uint64_t &Res) const;
719 virtual error_code getRelocationOffset(DataRefImpl Rel,
720 uint64_t &Res) const;
721 virtual error_code getRelocationSymbol(DataRefImpl Rel,
722 SymbolRef &Res) const;
723 virtual error_code getRelocationType(DataRefImpl Rel,
724 uint64_t &Res) const;
725 virtual error_code getRelocationTypeName(DataRefImpl Rel,
726 SmallVectorImpl<char> &Result) const;
727 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
729 virtual error_code getRelocationValueString(DataRefImpl Rel,
730 SmallVectorImpl<char> &Result) const;
733 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
735 bool isMips64EL() const {
736 return Header->e_machine == ELF::EM_MIPS &&
737 Header->getFileClass() == ELF::ELFCLASS64 &&
738 Header->getDataEncoding() == ELF::ELFDATA2LSB;
741 virtual symbol_iterator begin_symbols() const;
742 virtual symbol_iterator end_symbols() const;
744 virtual symbol_iterator begin_dynamic_symbols() const;
745 virtual symbol_iterator end_dynamic_symbols() const;
747 virtual section_iterator begin_sections() const;
748 virtual section_iterator end_sections() const;
750 virtual library_iterator begin_libraries_needed() const;
751 virtual library_iterator end_libraries_needed() const;
753 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
754 return SymbolTableSections[0];
757 const Elf_Shdr *getDynamicStringTableSectionHeader() const {
758 return dot_dynstr_sec;
761 Elf_Dyn_iterator begin_dynamic_table() const;
762 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
763 /// the section size.
764 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
766 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
767 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
769 return Elf_Sym_iterator(DynSymtab->sh_entsize,
770 (const char *)base() + DynSymtab->sh_offset);
771 return Elf_Sym_iterator(0, 0);
774 Elf_Sym_iterator end_elf_dynamic_symbols() const {
775 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
777 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
778 DynSymtab->sh_offset + DynSymtab->sh_size);
779 return Elf_Sym_iterator(0, 0);
782 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
783 return Elf_Rela_Iter(sec->sh_entsize,
784 (const char *)(base() + sec->sh_offset));
787 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
788 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
789 (base() + sec->sh_offset + sec->sh_size));
792 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
793 return Elf_Rel_Iter(sec->sh_entsize,
794 (const char *)(base() + sec->sh_offset));
797 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
798 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
799 (base() + sec->sh_offset + sec->sh_size));
802 /// \brief Iterate over program header table.
803 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
805 Elf_Phdr_Iter begin_program_headers() const {
806 return Elf_Phdr_Iter(Header->e_phentsize,
807 (const char*)base() + Header->e_phoff);
810 Elf_Phdr_Iter end_program_headers() const {
811 return Elf_Phdr_Iter(Header->e_phentsize,
812 (const char*)base() +
814 (Header->e_phnum * Header->e_phentsize));
817 virtual uint8_t getBytesInAddress() const;
818 virtual StringRef getFileFormatName() const;
819 virtual StringRef getObjectType() const { return "ELF"; }
820 virtual unsigned getArch() const;
821 virtual StringRef getLoadName() const;
822 virtual error_code getSectionContents(const Elf_Shdr *sec,
823 StringRef &Res) const;
825 uint64_t getNumSections() const;
826 uint64_t getStringTableIndex() const;
827 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
828 const Elf_Ehdr *getElfHeader() const;
829 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
830 const Elf_Shdr *getElfSection(section_iterator &It) const;
831 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
832 const Elf_Sym *getElfSymbol(uint32_t index) const;
834 // Methods for type inquiry through isa, cast, and dyn_cast
835 bool isDyldType() const { return isDyldELFObject; }
836 static inline bool classof(const Binary *v) {
837 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
842 // Iterate through the version definitions, and place each Elf_Verdef
843 // in the VersionMap according to its index.
845 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
846 unsigned vd_size = sec->sh_size; // Size of section in bytes
847 unsigned vd_count = sec->sh_info; // Number of Verdef entries
848 const char *sec_start = (const char*)base() + sec->sh_offset;
849 const char *sec_end = sec_start + vd_size;
850 // The first Verdef entry is at the start of the section.
851 const char *p = sec_start;
852 for (unsigned i = 0; i < vd_count; i++) {
853 if (p + sizeof(Elf_Verdef) > sec_end)
854 report_fatal_error("Section ended unexpectedly while scanning "
855 "version definitions.");
856 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
857 if (vd->vd_version != ELF::VER_DEF_CURRENT)
858 report_fatal_error("Unexpected verdef version");
859 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
860 if (index >= VersionMap.size())
861 VersionMap.resize(index+1);
862 VersionMap[index] = VersionMapEntry(vd);
867 // Iterate through the versions needed section, and place each Elf_Vernaux
868 // in the VersionMap according to its index.
870 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
871 unsigned vn_size = sec->sh_size; // Size of section in bytes
872 unsigned vn_count = sec->sh_info; // Number of Verneed entries
873 const char *sec_start = (const char*)base() + sec->sh_offset;
874 const char *sec_end = sec_start + vn_size;
875 // The first Verneed entry is at the start of the section.
876 const char *p = sec_start;
877 for (unsigned i = 0; i < vn_count; i++) {
878 if (p + sizeof(Elf_Verneed) > sec_end)
879 report_fatal_error("Section ended unexpectedly while scanning "
880 "version needed records.");
881 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
882 if (vn->vn_version != ELF::VER_NEED_CURRENT)
883 report_fatal_error("Unexpected verneed version");
884 // Iterate through the Vernaux entries
885 const char *paux = p + vn->vn_aux;
886 for (unsigned j = 0; j < vn->vn_cnt; j++) {
887 if (paux + sizeof(Elf_Vernaux) > sec_end)
888 report_fatal_error("Section ended unexpected while scanning auxiliary "
889 "version needed records.");
890 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
891 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
892 if (index >= VersionMap.size())
893 VersionMap.resize(index+1);
894 VersionMap[index] = VersionMapEntry(vna);
895 paux += vna->vna_next;
902 void ELFObjectFile<ELFT>::LoadVersionMap() const {
903 // If there is no dynamic symtab or version table, there is nothing to do.
904 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
907 // Has the VersionMap already been loaded?
908 if (VersionMap.size() > 0)
911 // The first two version indexes are reserved.
912 // Index 0 is LOCAL, index 1 is GLOBAL.
913 VersionMap.push_back(VersionMapEntry());
914 VersionMap.push_back(VersionMapEntry());
916 if (dot_gnu_version_d_sec)
917 LoadVersionDefs(dot_gnu_version_d_sec);
919 if (dot_gnu_version_r_sec)
920 LoadVersionNeeds(dot_gnu_version_r_sec);
924 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
926 const Elf_Sym *symb = getSymbol(Symb);
927 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
928 // FIXME: We really need to do proper error handling in the case of an invalid
929 // input file. Because we don't use exceptions, I think we'll just pass
930 // an error object around.
932 && SymbolTableSection
933 && symb >= (const Elf_Sym*)(base()
934 + SymbolTableSection->sh_offset)
935 && symb < (const Elf_Sym*)(base()
936 + SymbolTableSection->sh_offset
937 + SymbolTableSection->sh_size)))
938 // FIXME: Proper error handling.
939 report_fatal_error("Symb must point to a valid symbol!");
944 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
945 SymbolRef &Result) const {
946 validateSymbol(Symb);
947 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
950 // Check to see if we are at the end of this symbol table.
951 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
952 // We are at the end. If there are other symbol tables, jump to them.
953 // If the symbol table is .dynsym, we are iterating dynamic symbols,
954 // and there is only one table of these.
957 Symb.d.a = 1; // The 0th symbol in ELF is fake.
959 // Otherwise return the terminator.
960 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
961 Symb.d.a = std::numeric_limits<uint32_t>::max();
962 Symb.d.b = std::numeric_limits<uint32_t>::max();
966 Result = SymbolRef(Symb, this);
967 return object_error::success;
971 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
972 StringRef &Result) const {
973 validateSymbol(Symb);
974 const Elf_Sym *symb = getSymbol(Symb);
975 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
979 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
981 bool &IsDefault) const {
982 DataRefImpl Symb = SymRef.getRawDataRefImpl();
983 validateSymbol(Symb);
984 const Elf_Sym *symb = getSymbol(Symb);
985 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
990 ELF::Elf64_Word ELFObjectFile<ELFT>
991 ::getSymbolTableIndex(const Elf_Sym *symb) const {
992 if (symb->st_shndx == ELF::SHN_XINDEX)
993 return ExtendedSymbolTable.lookup(symb);
994 return symb->st_shndx;
998 const typename ELFObjectFile<ELFT>::Elf_Shdr *
999 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
1000 if (symb->st_shndx == ELF::SHN_XINDEX)
1001 return getSection(ExtendedSymbolTable.lookup(symb));
1002 if (symb->st_shndx >= ELF::SHN_LORESERVE)
1004 return getSection(symb->st_shndx);
1007 template<class ELFT>
1008 const typename ELFObjectFile<ELFT>::Elf_Ehdr *
1009 ELFObjectFile<ELFT>::getElfHeader() const {
1013 template<class ELFT>
1014 const typename ELFObjectFile<ELFT>::Elf_Shdr *
1015 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
1016 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
1017 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
1020 template<class ELFT>
1021 const typename ELFObjectFile<ELFT>::Elf_Sym *
1022 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
1023 return getSymbol(It->getRawDataRefImpl());
1026 template<class ELFT>
1027 const typename ELFObjectFile<ELFT>::Elf_Sym *
1028 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
1029 DataRefImpl SymbolData;
1030 SymbolData.d.a = index;
1032 return getSymbol(SymbolData);
1035 template<class ELFT>
1036 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1037 uint64_t &Result) const {
1038 validateSymbol(Symb);
1039 const Elf_Sym *symb = getSymbol(Symb);
1040 const Elf_Shdr *Section;
1041 switch (getSymbolTableIndex(symb)) {
1042 case ELF::SHN_COMMON:
1043 // Unintialized symbols have no offset in the object file
1044 case ELF::SHN_UNDEF:
1045 Result = UnknownAddressOrSize;
1046 return object_error::success;
1048 Result = symb->st_value;
1049 return object_error::success;
1050 default: Section = getSection(symb);
1053 switch (symb->getType()) {
1054 case ELF::STT_SECTION:
1055 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1056 return object_error::success;
1058 case ELF::STT_OBJECT:
1059 case ELF::STT_NOTYPE:
1060 Result = symb->st_value +
1061 (Section ? Section->sh_offset : 0);
1062 return object_error::success;
1064 Result = UnknownAddressOrSize;
1065 return object_error::success;
1069 template<class ELFT>
1070 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1071 uint64_t &Result) const {
1072 validateSymbol(Symb);
1073 const Elf_Sym *symb = getSymbol(Symb);
1074 const Elf_Shdr *Section;
1075 switch (getSymbolTableIndex(symb)) {
1076 case ELF::SHN_COMMON:
1077 case ELF::SHN_UNDEF:
1078 Result = UnknownAddressOrSize;
1079 return object_error::success;
1081 Result = symb->st_value;
1082 return object_error::success;
1083 default: Section = getSection(symb);
1086 switch (symb->getType()) {
1087 case ELF::STT_SECTION:
1088 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1089 return object_error::success;
1091 case ELF::STT_OBJECT:
1092 case ELF::STT_NOTYPE:
1094 switch(Header->e_type) {
1097 IsRelocatable = false;
1100 IsRelocatable = true;
1102 Result = symb->st_value;
1104 // Clear the ARM/Thumb indicator flag.
1105 if (Header->e_machine == ELF::EM_ARM)
1108 if (IsRelocatable && Section != 0)
1109 Result += Section->sh_addr;
1110 return object_error::success;
1112 Result = UnknownAddressOrSize;
1113 return object_error::success;
1117 template<class ELFT>
1118 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1119 uint64_t &Result) const {
1120 validateSymbol(Symb);
1121 const Elf_Sym *symb = getSymbol(Symb);
1122 if (symb->st_size == 0)
1123 Result = UnknownAddressOrSize;
1124 Result = symb->st_size;
1125 return object_error::success;
1128 template<class ELFT>
1129 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1130 char &Result) const {
1131 validateSymbol(Symb);
1132 const Elf_Sym *symb = getSymbol(Symb);
1133 const Elf_Shdr *Section = getSection(symb);
1138 switch (Section->sh_type) {
1139 case ELF::SHT_PROGBITS:
1140 case ELF::SHT_DYNAMIC:
1141 switch (Section->sh_flags) {
1142 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1144 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1146 case ELF::SHF_ALLOC:
1147 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1148 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1152 case ELF::SHT_NOBITS: ret = 'b';
1156 switch (getSymbolTableIndex(symb)) {
1157 case ELF::SHN_UNDEF:
1161 case ELF::SHN_ABS: ret = 'a'; break;
1162 case ELF::SHN_COMMON: ret = 'c'; break;
1165 switch (symb->getBinding()) {
1166 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1168 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1171 if (symb->getType() == ELF::STT_OBJECT)
1177 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1179 if (error_code ec = getSymbolName(Symb, name))
1181 Result = StringSwitch<char>(name)
1182 .StartsWith(".debug", 'N')
1183 .StartsWith(".note", 'n')
1185 return object_error::success;
1189 return object_error::success;
1192 template<class ELFT>
1193 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1194 SymbolRef::Type &Result) const {
1195 validateSymbol(Symb);
1196 const Elf_Sym *symb = getSymbol(Symb);
1198 switch (symb->getType()) {
1199 case ELF::STT_NOTYPE:
1200 Result = SymbolRef::ST_Unknown;
1202 case ELF::STT_SECTION:
1203 Result = SymbolRef::ST_Debug;
1206 Result = SymbolRef::ST_File;
1209 Result = SymbolRef::ST_Function;
1211 case ELF::STT_OBJECT:
1212 case ELF::STT_COMMON:
1214 Result = SymbolRef::ST_Data;
1217 Result = SymbolRef::ST_Other;
1220 return object_error::success;
1223 template<class ELFT>
1224 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1225 uint32_t &Result) const {
1226 validateSymbol(Symb);
1227 const Elf_Sym *symb = getSymbol(Symb);
1229 Result = SymbolRef::SF_None;
1231 if (symb->getBinding() != ELF::STB_LOCAL)
1232 Result |= SymbolRef::SF_Global;
1234 if (symb->getBinding() == ELF::STB_WEAK)
1235 Result |= SymbolRef::SF_Weak;
1237 if (symb->st_shndx == ELF::SHN_ABS)
1238 Result |= SymbolRef::SF_Absolute;
1240 if (symb->getType() == ELF::STT_FILE ||
1241 symb->getType() == ELF::STT_SECTION)
1242 Result |= SymbolRef::SF_FormatSpecific;
1244 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1245 Result |= SymbolRef::SF_Undefined;
1247 if (symb->getType() == ELF::STT_COMMON ||
1248 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1249 Result |= SymbolRef::SF_Common;
1251 if (symb->getType() == ELF::STT_TLS)
1252 Result |= SymbolRef::SF_ThreadLocal;
1254 return object_error::success;
1257 template<class ELFT>
1258 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1259 section_iterator &Res) const {
1260 validateSymbol(Symb);
1261 const Elf_Sym *symb = getSymbol(Symb);
1262 const Elf_Shdr *sec = getSection(symb);
1264 Res = end_sections();
1267 Sec.p = reinterpret_cast<intptr_t>(sec);
1268 Res = section_iterator(SectionRef(Sec, this));
1270 return object_error::success;
1273 template<class ELFT>
1274 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1275 uint64_t &Val) const {
1276 validateSymbol(Symb);
1277 const Elf_Sym *symb = getSymbol(Symb);
1278 Val = symb->st_value;
1279 return object_error::success;
1282 template<class ELFT>
1283 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1284 SectionRef &Result) const {
1285 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1286 sec += Header->e_shentsize;
1287 Sec.p = reinterpret_cast<intptr_t>(sec);
1288 Result = SectionRef(Sec, this);
1289 return object_error::success;
1292 template<class ELFT>
1293 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1294 StringRef &Result) const {
1295 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1296 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1297 return object_error::success;
1300 template<class ELFT>
1301 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1302 uint64_t &Result) const {
1303 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1304 Result = sec->sh_addr;
1305 return object_error::success;
1308 template<class ELFT>
1309 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1310 uint64_t &Result) const {
1311 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1312 Result = sec->sh_size;
1313 return object_error::success;
1316 template<class ELFT>
1317 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1318 StringRef &Result) const {
1319 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1320 const char *start = (const char*)base() + sec->sh_offset;
1321 Result = StringRef(start, sec->sh_size);
1322 return object_error::success;
1325 template<class ELFT>
1326 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1327 StringRef &Result) const {
1328 const char *start = (const char*)base() + Sec->sh_offset;
1329 Result = StringRef(start, Sec->sh_size);
1330 return object_error::success;
1333 template<class ELFT>
1334 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1335 uint64_t &Result) const {
1336 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1337 Result = sec->sh_addralign;
1338 return object_error::success;
1341 template<class ELFT>
1342 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1343 bool &Result) const {
1344 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1345 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1349 return object_error::success;
1352 template<class ELFT>
1353 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1354 bool &Result) const {
1355 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1356 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1357 && sec->sh_type == ELF::SHT_PROGBITS)
1361 return object_error::success;
1364 template<class ELFT>
1365 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1366 bool &Result) const {
1367 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1368 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1369 && sec->sh_type == ELF::SHT_NOBITS)
1373 return object_error::success;
1376 template<class ELFT>
1377 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1378 DataRefImpl Sec, bool &Result) const {
1379 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1380 if (sec->sh_flags & ELF::SHF_ALLOC)
1384 return object_error::success;
1387 template<class ELFT>
1388 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1389 bool &Result) const {
1390 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1391 if (sec->sh_type == ELF::SHT_NOBITS)
1395 return object_error::success;
1398 template<class ELFT>
1399 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1400 bool &Result) const {
1401 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1402 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1403 // in the object image) and vice versa.
1404 Result = sec->sh_type == ELF::SHT_NOBITS;
1405 return object_error::success;
1408 template<class ELFT>
1409 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1410 bool &Result) const {
1411 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1412 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1416 return object_error::success;
1419 template<class ELFT>
1420 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1422 bool &Result) const {
1423 validateSymbol(Symb);
1425 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1426 const Elf_Sym *symb = getSymbol(Symb);
1428 unsigned shndx = symb->st_shndx;
1429 bool Reserved = shndx >= ELF::SHN_LORESERVE
1430 && shndx <= ELF::SHN_HIRESERVE;
1432 Result = !Reserved && (sec == getSection(symb->st_shndx));
1433 return object_error::success;
1436 template<class ELFT>
1438 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1439 DataRefImpl RelData;
1440 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1441 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1442 if (sec != 0 && ittr != SectionRelocMap.end()) {
1443 RelData.w.a = getSection(ittr->second[0])->sh_info;
1444 RelData.w.b = ittr->second[0];
1447 return relocation_iterator(RelocationRef(RelData, this));
1450 template<class ELFT>
1452 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1453 DataRefImpl RelData;
1454 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1455 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1456 if (sec != 0 && ittr != SectionRelocMap.end()) {
1457 // Get the index of the last relocation section for this section.
1458 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1459 const Elf_Shdr *relocsec = getSection(relocsecindex);
1460 RelData.w.a = relocsec->sh_info;
1461 RelData.w.b = relocsecindex;
1462 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1464 return relocation_iterator(RelocationRef(RelData, this));
1468 template<class ELFT>
1469 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1470 RelocationRef &Result) const {
1472 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1473 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1474 // We have reached the end of the relocations for this section. See if there
1475 // is another relocation section.
1476 typename RelocMap_t::mapped_type relocseclist =
1477 SectionRelocMap.lookup(getSection(Rel.w.a));
1479 // Do a binary search for the current reloc section index (which must be
1480 // present). Then get the next one.
1481 typename RelocMap_t::mapped_type::const_iterator loc =
1482 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1485 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1486 // to the end iterator.
1487 if (loc != relocseclist.end()) {
1492 Result = RelocationRef(Rel, this);
1493 return object_error::success;
1496 template<class ELFT>
1497 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1498 SymbolRef &Result) const {
1500 const Elf_Shdr *sec = getSection(Rel.w.b);
1501 switch (sec->sh_type) {
1503 report_fatal_error("Invalid section type in Rel!");
1504 case ELF::SHT_REL : {
1505 symbolIdx = getRel(Rel)->getSymbol(isMips64EL());
1508 case ELF::SHT_RELA : {
1509 symbolIdx = getRela(Rel)->getSymbol(isMips64EL());
1513 DataRefImpl SymbolData;
1514 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1515 if (it == SymbolTableSectionsIndexMap.end())
1516 report_fatal_error("Relocation symbol table not found!");
1517 SymbolData.d.a = symbolIdx;
1518 SymbolData.d.b = it->second;
1519 Result = SymbolRef(SymbolData, this);
1520 return object_error::success;
1523 template<class ELFT>
1524 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1525 uint64_t &Result) const {
1526 assert((Header->e_type == ELF::ET_EXEC || Header->e_type == ELF::ET_DYN) &&
1527 "Only executable and shared objects files have addresses");
1528 Result = getROffset(Rel);
1529 return object_error::success;
1532 template<class ELFT>
1533 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1534 uint64_t &Result) const {
1535 assert(Header->e_type == ELF::ET_REL &&
1536 "Only relocatable object files have relocation offsets");
1537 Result = getROffset(Rel);
1538 return object_error::success;
1541 template<class ELFT>
1542 uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const {
1543 const Elf_Shdr *sec = getSection(Rel.w.b);
1544 switch (sec->sh_type) {
1546 report_fatal_error("Invalid section type in Rel!");
1548 return getRel(Rel)->r_offset;
1550 return getRela(Rel)->r_offset;
1554 template<class ELFT>
1555 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1556 uint64_t &Result) const {
1557 const Elf_Shdr *sec = getSection(Rel.w.b);
1558 switch (sec->sh_type) {
1560 report_fatal_error("Invalid section type in Rel!");
1561 case ELF::SHT_REL : {
1562 Result = getRel(Rel)->getType(isMips64EL());
1565 case ELF::SHT_RELA : {
1566 Result = getRela(Rel)->getType(isMips64EL());
1570 return object_error::success;
1573 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1574 case ELF::enum: Res = #enum; break;
1576 template<class ELFT>
1577 StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
1578 StringRef Res = "Unknown";
1579 switch (Header->e_machine) {
1580 case ELF::EM_X86_64:
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1591 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1592 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT64);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL64);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC64);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPLT64);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLTOFF64);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_IRELATIVE);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NUM);
1725 case ELF::EM_AARCH64:
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1939 case ELF::EM_HEXAGON:
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1947 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1948 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1949 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1950 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1951 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1952 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1953 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1954 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1955 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1956 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1985 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1986 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1987 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1988 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1989 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1990 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
2012 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
2013 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
2014 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2015 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2016 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2017 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2018 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2019 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2020 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2021 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2022 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2023 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2024 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2025 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2026 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2032 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_NONE);
2033 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR32);
2034 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR24);
2035 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16);
2036 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_LO);
2037 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HI);
2038 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HA);
2039 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14);
2040 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRTAKEN);
2041 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRNTAKEN);
2042 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL24);
2043 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14);
2044 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRTAKEN);
2045 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRNTAKEN);
2046 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32);
2047 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_LO);
2048 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HA);
2054 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_NONE);
2055 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR32);
2056 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO);
2057 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HI);
2058 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14);
2059 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL24);
2060 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32);
2061 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64);
2062 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER);
2063 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST);
2064 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64);
2065 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16);
2066 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO);
2067 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA);
2068 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC);
2069 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS);
2070 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO_DS);
2071 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_DS);
2072 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO_DS);
2073 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLS);
2074 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO);
2075 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HA);
2076 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO);
2077 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HA);
2078 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_LO);
2079 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HA);
2080 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_LO);
2081 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HA);
2082 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_LO_DS);
2083 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HA);
2084 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSGD);
2085 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSLD);
2094 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2096 template<class ELFT>
2097 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
2098 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2099 const Elf_Shdr *sec = getSection(Rel.w.b);
2101 switch (sec->sh_type) {
2103 return object_error::parse_failed;
2104 case ELF::SHT_REL : {
2105 type = getRel(Rel)->getType(isMips64EL());
2108 case ELF::SHT_RELA : {
2109 type = getRela(Rel)->getType(isMips64EL());
2114 if (!isMips64EL()) {
2115 StringRef Name = getRelocationTypeName(type);
2116 Result.append(Name.begin(), Name.end());
2118 uint8_t Type1 = (type >> 0) & 0xFF;
2119 uint8_t Type2 = (type >> 8) & 0xFF;
2120 uint8_t Type3 = (type >> 16) & 0xFF;
2122 // Concat all three relocation type names.
2123 StringRef Name = getRelocationTypeName(Type1);
2124 Result.append(Name.begin(), Name.end());
2126 Name = getRelocationTypeName(Type2);
2127 Result.append(1, '/');
2128 Result.append(Name.begin(), Name.end());
2130 Name = getRelocationTypeName(Type3);
2131 Result.append(1, '/');
2132 Result.append(Name.begin(), Name.end());
2135 return object_error::success;
2138 template<class ELFT>
2139 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
2140 DataRefImpl Rel, int64_t &Result) const {
2141 const Elf_Shdr *sec = getSection(Rel.w.b);
2142 switch (sec->sh_type) {
2144 report_fatal_error("Invalid section type in Rel!");
2145 case ELF::SHT_REL : {
2147 return object_error::success;
2149 case ELF::SHT_RELA : {
2150 Result = getRela(Rel)->r_addend;
2151 return object_error::success;
2156 template<class ELFT>
2157 error_code ELFObjectFile<ELFT>::getRelocationValueString(
2158 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2159 const Elf_Shdr *sec = getSection(Rel.w.b);
2163 uint16_t symbol_index = 0;
2164 switch (sec->sh_type) {
2166 return object_error::parse_failed;
2167 case ELF::SHT_REL: {
2168 type = getRel(Rel)->getType(isMips64EL());
2169 symbol_index = getRel(Rel)->getSymbol(isMips64EL());
2170 // TODO: Read implicit addend from section data.
2173 case ELF::SHT_RELA: {
2174 type = getRela(Rel)->getType(isMips64EL());
2175 symbol_index = getRela(Rel)->getSymbol(isMips64EL());
2176 addend = getRela(Rel)->r_addend;
2180 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2182 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2184 switch (Header->e_machine) {
2185 case ELF::EM_X86_64:
2187 case ELF::R_X86_64_PC8:
2188 case ELF::R_X86_64_PC16:
2189 case ELF::R_X86_64_PC32: {
2191 raw_string_ostream fmt(fmtbuf);
2192 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2194 Result.append(fmtbuf.begin(), fmtbuf.end());
2197 case ELF::R_X86_64_8:
2198 case ELF::R_X86_64_16:
2199 case ELF::R_X86_64_32:
2200 case ELF::R_X86_64_32S:
2201 case ELF::R_X86_64_64: {
2203 raw_string_ostream fmt(fmtbuf);
2204 fmt << symname << (addend < 0 ? "" : "+") << addend;
2206 Result.append(fmtbuf.begin(), fmtbuf.end());
2213 case ELF::EM_AARCH64:
2215 case ELF::EM_HEXAGON:
2222 Result.append(res.begin(), res.end());
2223 return object_error::success;
2226 // Verify that the last byte in the string table in a null.
2227 template<class ELFT>
2228 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2229 const char *strtab = (const char*)base() + sh->sh_offset;
2230 if (strtab[sh->sh_size - 1] != 0)
2231 // FIXME: Proper error handling.
2232 report_fatal_error("String table must end with a null terminator!");
2235 template<class ELFT>
2236 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2237 : ObjectFile(getELFType(
2238 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2241 , isDyldELFObject(false)
2242 , SectionHeaderTable(0)
2243 , dot_shstrtab_sec(0)
2246 , dot_dynamic_sec(0)
2247 , dot_gnu_version_sec(0)
2248 , dot_gnu_version_r_sec(0)
2249 , dot_gnu_version_d_sec(0)
2253 const uint64_t FileSize = Data->getBufferSize();
2255 if (sizeof(Elf_Ehdr) > FileSize)
2256 // FIXME: Proper error handling.
2257 report_fatal_error("File too short!");
2259 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2261 if (Header->e_shoff == 0)
2264 const uint64_t SectionTableOffset = Header->e_shoff;
2266 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2267 // FIXME: Proper error handling.
2268 report_fatal_error("Section header table goes past end of file!");
2270 // The getNumSections() call below depends on SectionHeaderTable being set.
2271 SectionHeaderTable =
2272 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2273 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2275 if (SectionTableOffset + SectionTableSize > FileSize)
2276 // FIXME: Proper error handling.
2277 report_fatal_error("Section table goes past end of file!");
2279 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2280 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2281 const Elf_Shdr* sh = SectionHeaderTable;
2283 // Reserve SymbolTableSections[0] for .dynsym
2284 SymbolTableSections.push_back(NULL);
2286 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2287 switch (sh->sh_type) {
2288 case ELF::SHT_SYMTAB_SHNDX: {
2289 if (SymbolTableSectionHeaderIndex)
2290 // FIXME: Proper error handling.
2291 report_fatal_error("More than one .symtab_shndx!");
2292 SymbolTableSectionHeaderIndex = sh;
2295 case ELF::SHT_SYMTAB: {
2296 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2297 SymbolTableSections.push_back(sh);
2300 case ELF::SHT_DYNSYM: {
2301 if (SymbolTableSections[0] != NULL)
2302 // FIXME: Proper error handling.
2303 report_fatal_error("More than one .dynsym!");
2304 SymbolTableSectionsIndexMap[i] = 0;
2305 SymbolTableSections[0] = sh;
2309 case ELF::SHT_RELA: {
2310 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2313 case ELF::SHT_DYNAMIC: {
2314 if (dot_dynamic_sec != NULL)
2315 // FIXME: Proper error handling.
2316 report_fatal_error("More than one .dynamic!");
2317 dot_dynamic_sec = sh;
2320 case ELF::SHT_GNU_versym: {
2321 if (dot_gnu_version_sec != NULL)
2322 // FIXME: Proper error handling.
2323 report_fatal_error("More than one .gnu.version section!");
2324 dot_gnu_version_sec = sh;
2327 case ELF::SHT_GNU_verdef: {
2328 if (dot_gnu_version_d_sec != NULL)
2329 // FIXME: Proper error handling.
2330 report_fatal_error("More than one .gnu.version_d section!");
2331 dot_gnu_version_d_sec = sh;
2334 case ELF::SHT_GNU_verneed: {
2335 if (dot_gnu_version_r_sec != NULL)
2336 // FIXME: Proper error handling.
2337 report_fatal_error("More than one .gnu.version_r section!");
2338 dot_gnu_version_r_sec = sh;
2345 // Sort section relocation lists by index.
2346 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2347 e = SectionRelocMap.end(); i != e; ++i) {
2348 std::sort(i->second.begin(), i->second.end());
2351 // Get string table sections.
2352 dot_shstrtab_sec = getSection(getStringTableIndex());
2353 if (dot_shstrtab_sec) {
2354 // Verify that the last byte in the string table in a null.
2355 VerifyStrTab(dot_shstrtab_sec);
2358 // Merge this into the above loop.
2359 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2360 *e = i + getNumSections() * Header->e_shentsize;
2361 i != e; i += Header->e_shentsize) {
2362 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2363 if (sh->sh_type == ELF::SHT_STRTAB) {
2364 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2365 if (SectionName == ".strtab") {
2366 if (dot_strtab_sec != 0)
2367 // FIXME: Proper error handling.
2368 report_fatal_error("Already found section named .strtab!");
2369 dot_strtab_sec = sh;
2370 VerifyStrTab(dot_strtab_sec);
2371 } else if (SectionName == ".dynstr") {
2372 if (dot_dynstr_sec != 0)
2373 // FIXME: Proper error handling.
2374 report_fatal_error("Already found section named .dynstr!");
2375 dot_dynstr_sec = sh;
2376 VerifyStrTab(dot_dynstr_sec);
2381 // Build symbol name side-mapping if there is one.
2382 if (SymbolTableSectionHeaderIndex) {
2383 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2384 SymbolTableSectionHeaderIndex->sh_offset);
2386 for (symbol_iterator si = begin_symbols(),
2387 se = end_symbols(); si != se; si.increment(ec)) {
2389 report_fatal_error("Fewer extended symbol table entries than symbols!");
2390 if (*ShndxTable != ELF::SHN_UNDEF)
2391 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2397 // Get the symbol table index in the symtab section given a symbol
2398 template<class ELFT>
2399 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2400 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2401 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2402 uintptr_t SymLoc = uintptr_t(Sym);
2403 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2404 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2405 uint64_t SymOffset = SymLoc - SymTabLoc;
2406 assert(SymOffset % SymTab->sh_entsize == 0 &&
2407 "Symbol not multiple of symbol size!");
2408 return SymOffset / SymTab->sh_entsize;
2411 template<class ELFT>
2412 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2413 DataRefImpl SymbolData;
2414 if (SymbolTableSections.size() <= 1) {
2415 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2416 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2418 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2419 SymbolData.d.b = 1; // The 0th table is .dynsym
2421 return symbol_iterator(SymbolRef(SymbolData, this));
2424 template<class ELFT>
2425 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2426 DataRefImpl SymbolData;
2427 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2428 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2429 return symbol_iterator(SymbolRef(SymbolData, this));
2432 template<class ELFT>
2433 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2434 DataRefImpl SymbolData;
2435 if (SymbolTableSections[0] == NULL) {
2436 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2437 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2439 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2440 SymbolData.d.b = 0; // The 0th table is .dynsym
2442 return symbol_iterator(SymbolRef(SymbolData, this));
2445 template<class ELFT>
2446 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2447 DataRefImpl SymbolData;
2448 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2449 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2450 return symbol_iterator(SymbolRef(SymbolData, this));
2453 template<class ELFT>
2454 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2456 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2457 return section_iterator(SectionRef(ret, this));
2460 template<class ELFT>
2461 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2463 ret.p = reinterpret_cast<intptr_t>(base()
2465 + (Header->e_shentsize*getNumSections()));
2466 return section_iterator(SectionRef(ret, this));
2469 template<class ELFT>
2470 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2471 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2472 if (dot_dynamic_sec)
2473 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2474 (const char *)base() + dot_dynamic_sec->sh_offset);
2475 return Elf_Dyn_iterator(0, 0);
2478 template<class ELFT>
2479 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2480 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2481 if (dot_dynamic_sec) {
2482 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2483 (const char *)base() + dot_dynamic_sec->sh_offset +
2484 dot_dynamic_sec->sh_size);
2487 Elf_Dyn_iterator Start = begin_dynamic_table();
2488 while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2491 // Include the DT_NULL.
2498 return Elf_Dyn_iterator(0, 0);
2501 template<class ELFT>
2502 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2504 // Find the DT_SONAME entry
2505 Elf_Dyn_iterator it = begin_dynamic_table();
2506 Elf_Dyn_iterator ie = end_dynamic_table();
2507 while (it != ie && it->getTag() != ELF::DT_SONAME)
2511 if (dot_dynstr_sec == NULL)
2512 report_fatal_error("Dynamic string table is missing");
2513 dt_soname = getString(dot_dynstr_sec, it->getVal());
2521 template<class ELFT>
2522 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2523 // Find the first DT_NEEDED entry
2524 Elf_Dyn_iterator i = begin_dynamic_table();
2525 Elf_Dyn_iterator e = end_dynamic_table();
2526 while (i != e && i->getTag() != ELF::DT_NEEDED)
2530 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2531 return library_iterator(LibraryRef(DRI, this));
2534 template<class ELFT>
2535 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2536 LibraryRef &Result) const {
2537 // Use the same DataRefImpl format as DynRef.
2538 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2539 reinterpret_cast<const char *>(Data.p));
2540 Elf_Dyn_iterator e = end_dynamic_table();
2542 // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2545 while (i != e && i->getTag() != ELF::DT_NEEDED);
2548 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2549 Result = LibraryRef(DRI, this);
2550 return object_error::success;
2553 template<class ELFT>
2554 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2555 StringRef &Res) const {
2556 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2557 reinterpret_cast<const char *>(Data.p));
2558 if (i == end_dynamic_table())
2559 report_fatal_error("getLibraryPath() called on iterator end");
2561 if (i->getTag() != ELF::DT_NEEDED)
2562 report_fatal_error("Invalid library_iterator");
2564 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2565 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2566 // the time, but the specification allows exceptions.
2567 // TODO: This should really use DT_STRTAB instead. Doing this requires
2568 // reading the program headers.
2569 if (dot_dynstr_sec == NULL)
2570 report_fatal_error("Dynamic string table is missing");
2571 Res = getString(dot_dynstr_sec, i->getVal());
2572 return object_error::success;
2575 template<class ELFT>
2576 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2577 Elf_Dyn_iterator e = end_dynamic_table();
2579 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2580 return library_iterator(LibraryRef(DRI, this));
2583 template<class ELFT>
2584 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2585 return ELFT::Is64Bits ? 8 : 4;
2588 template<class ELFT>
2589 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2590 switch(Header->e_ident[ELF::EI_CLASS]) {
2591 case ELF::ELFCLASS32:
2592 switch(Header->e_machine) {
2594 return "ELF32-i386";
2595 case ELF::EM_X86_64:
2596 return "ELF32-x86-64";
2599 case ELF::EM_HEXAGON:
2600 return "ELF32-hexagon";
2602 return "ELF32-mips";
2604 return "ELF32-unknown";
2606 case ELF::ELFCLASS64:
2607 switch(Header->e_machine) {
2609 return "ELF64-i386";
2610 case ELF::EM_X86_64:
2611 return "ELF64-x86-64";
2612 case ELF::EM_AARCH64:
2613 return "ELF64-aarch64";
2615 return "ELF64-ppc64";
2617 return "ELF64-unknown";
2620 // FIXME: Proper error handling.
2621 report_fatal_error("Invalid ELFCLASS!");
2625 template<class ELFT>
2626 unsigned ELFObjectFile<ELFT>::getArch() const {
2627 switch(Header->e_machine) {
2630 case ELF::EM_X86_64:
2631 return Triple::x86_64;
2632 case ELF::EM_AARCH64:
2633 return Triple::aarch64;
2636 case ELF::EM_HEXAGON:
2637 return Triple::hexagon;
2639 return (ELFT::TargetEndianness == support::little) ?
2640 Triple::mipsel : Triple::mips;
2642 return Triple::ppc64;
2644 return Triple::UnknownArch;
2648 template<class ELFT>
2649 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2650 assert(Header && "Header not initialized!");
2651 if (Header->e_shnum == ELF::SHN_UNDEF) {
2652 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2653 return SectionHeaderTable->sh_size;
2655 return Header->e_shnum;
2658 template<class ELFT>
2660 ELFObjectFile<ELFT>::getStringTableIndex() const {
2661 if (Header->e_shnum == ELF::SHN_UNDEF) {
2662 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2663 return SectionHeaderTable->sh_link;
2664 if (Header->e_shstrndx >= getNumSections())
2667 return Header->e_shstrndx;
2670 template<class ELFT>
2671 template<typename T>
2673 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2674 return getEntry<T>(getSection(Section), Entry);
2677 template<class ELFT>
2678 template<typename T>
2680 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2681 return reinterpret_cast<const T *>(
2683 + Section->sh_offset
2684 + (Entry * Section->sh_entsize));
2687 template<class ELFT>
2688 const typename ELFObjectFile<ELFT>::Elf_Sym *
2689 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2690 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2693 template<class ELFT>
2694 const typename ELFObjectFile<ELFT>::Elf_Rel *
2695 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2696 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2699 template<class ELFT>
2700 const typename ELFObjectFile<ELFT>::Elf_Rela *
2701 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2702 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2705 template<class ELFT>
2706 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2707 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2708 const Elf_Shdr *sec = getSection(Symb.d.b);
2709 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2710 // FIXME: Proper error handling.
2711 report_fatal_error("Invalid symbol table section!");
2715 template<class ELFT>
2716 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2717 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2720 if (!SectionHeaderTable || index >= getNumSections())
2721 // FIXME: Proper error handling.
2722 report_fatal_error("Invalid section index!");
2724 return reinterpret_cast<const Elf_Shdr *>(
2725 reinterpret_cast<const char *>(SectionHeaderTable)
2726 + (index * Header->e_shentsize));
2729 template<class ELFT>
2730 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2731 ELF::Elf32_Word offset) const {
2732 return getString(getSection(section), offset);
2735 template<class ELFT>
2736 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2737 ELF::Elf32_Word offset) const {
2738 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2739 if (offset >= section->sh_size)
2740 // FIXME: Proper error handling.
2741 report_fatal_error("Symbol name offset outside of string table!");
2742 return (const char *)base() + section->sh_offset + offset;
2745 template<class ELFT>
2746 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2747 const Elf_Sym *symb,
2748 StringRef &Result) const {
2749 if (symb->st_name == 0) {
2750 const Elf_Shdr *section = getSection(symb);
2754 Result = getString(dot_shstrtab_sec, section->sh_name);
2755 return object_error::success;
2758 if (section == SymbolTableSections[0]) {
2759 // Symbol is in .dynsym, use .dynstr string table
2760 Result = getString(dot_dynstr_sec, symb->st_name);
2762 // Use the default symbol table name section.
2763 Result = getString(dot_strtab_sec, symb->st_name);
2765 return object_error::success;
2768 template<class ELFT>
2769 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2770 StringRef &Result) const {
2771 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2772 return object_error::success;
2775 template<class ELFT>
2776 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2777 const Elf_Sym *symb,
2779 bool &IsDefault) const {
2780 // Handle non-dynamic symbols.
2781 if (section != SymbolTableSections[0]) {
2782 // Non-dynamic symbols can have versions in their names
2783 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2784 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2786 error_code ec = getSymbolName(section, symb, Name);
2787 if (ec != object_error::success)
2789 size_t atpos = Name.find('@');
2790 if (atpos == StringRef::npos) {
2793 return object_error::success;
2796 if (atpos < Name.size() && Name[atpos] == '@') {
2802 Version = Name.substr(atpos);
2803 return object_error::success;
2806 // This is a dynamic symbol. Look in the GNU symbol version table.
2807 if (dot_gnu_version_sec == NULL) {
2808 // No version table.
2811 return object_error::success;
2814 // Determine the position in the symbol table of this entry.
2815 const char *sec_start = (const char*)base() + section->sh_offset;
2816 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2818 // Get the corresponding version index entry
2819 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2820 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2822 // Special markers for unversioned symbols.
2823 if (version_index == ELF::VER_NDX_LOCAL ||
2824 version_index == ELF::VER_NDX_GLOBAL) {
2827 return object_error::success;
2830 // Lookup this symbol in the version table
2832 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2833 report_fatal_error("Symbol has version index without corresponding "
2834 "define or reference entry");
2835 const VersionMapEntry &entry = VersionMap[version_index];
2837 // Get the version name string
2839 if (entry.isVerdef()) {
2840 // The first Verdaux entry holds the name.
2841 name_offset = entry.getVerdef()->getAux()->vda_name;
2843 name_offset = entry.getVernaux()->vna_name;
2845 Version = getString(dot_dynstr_sec, name_offset);
2848 if (entry.isVerdef()) {
2849 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2854 return object_error::success;
2857 /// This is a generic interface for retrieving GNU symbol version
2858 /// information from an ELFObjectFile.
2859 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2860 const SymbolRef &Sym,
2863 // Little-endian 32-bit
2864 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2865 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2866 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2868 // Big-endian 32-bit
2869 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2870 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2871 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2873 // Little-endian 64-bit
2874 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2875 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2876 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2878 // Big-endian 64-bit
2879 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2880 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2881 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2883 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2886 /// This function returns the hash value for a symbol in the .dynsym section
2887 /// Name of the API remains consistent as specified in the libelf
2888 /// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
2889 static inline unsigned elf_hash(StringRef &symbolName) {
2891 for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
2892 h = (h << 4) + symbolName[i];
2893 g = h & 0xf0000000L;