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<template<endianness, std::size_t, bool> class ELFT,
85 endianness TargetEndianness, std::size_t MaxAlign>
86 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, false> >
87 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
88 typedef uint32_t value_type;
89 typedef support::detail::packed_endian_specific_integral
90 <value_type, TargetEndianness,
91 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
92 typedef support::detail::packed_endian_specific_integral
93 <value_type, TargetEndianness,
94 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
98 template<template<endianness, std::size_t, bool> class ELFT,
99 endianness TargetEndianness, std::size_t MaxAlign>
100 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, true> >
101 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
102 typedef uint64_t value_type;
103 typedef support::detail::packed_endian_specific_integral
104 <value_type, TargetEndianness,
105 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
106 typedef support::detail::packed_endian_specific_integral
107 <value_type, TargetEndianness,
108 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
111 // I really don't like doing this, but the alternative is copypasta.
112 #define LLVM_ELF_IMPORT_TYPES(ELFT) \
113 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Addr Elf_Addr; \
114 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Off Elf_Off; \
115 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Half Elf_Half; \
116 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Word Elf_Word; \
117 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sword Elf_Sword; \
118 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Xword Elf_Xword; \
119 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sxword Elf_Sxword;
121 // This is required to get template types into a macro :(
122 #define LLVM_ELF_COMMA ,
126 struct Elf_Shdr_Base;
128 template<template<endianness, std::size_t, bool> class ELFT,
129 endianness TargetEndianness, std::size_t MaxAlign>
130 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, false> > {
131 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
132 MaxAlign LLVM_ELF_COMMA 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<template<endianness, std::size_t, bool> class ELFT,
146 endianness TargetEndianness, std::size_t MaxAlign>
147 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, true> > {
148 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
149 MaxAlign LLVM_ELF_COMMA true>)
150 Elf_Word sh_name; // Section name (index into string table)
151 Elf_Word sh_type; // Section type (SHT_*)
152 Elf_Xword sh_flags; // Section flags (SHF_*)
153 Elf_Addr sh_addr; // Address where section is to be loaded
154 Elf_Off sh_offset; // File offset of section data, in bytes
155 Elf_Xword sh_size; // Size of section, in bytes
156 Elf_Word sh_link; // Section type-specific header table index link
157 Elf_Word sh_info; // Section type-specific extra information
158 Elf_Xword sh_addralign;// Section address alignment
159 Elf_Xword sh_entsize; // Size of records contained within the section
163 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
164 using Elf_Shdr_Base<ELFT>::sh_entsize;
165 using Elf_Shdr_Base<ELFT>::sh_size;
167 /// @brief Get the number of entities this section contains if it has any.
168 unsigned getEntityCount() const {
171 return sh_size / sh_entsize;
178 template<template<endianness, std::size_t, bool> class ELFT,
179 endianness TargetEndianness, std::size_t MaxAlign>
180 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, false> > {
181 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
182 MaxAlign LLVM_ELF_COMMA false>)
183 Elf_Word st_name; // Symbol name (index into string table)
184 Elf_Addr st_value; // Value or address associated with the symbol
185 Elf_Word st_size; // Size of the symbol
186 unsigned char st_info; // Symbol's type and binding attributes
187 unsigned char st_other; // Must be zero; reserved
188 Elf_Half st_shndx; // Which section (header table index) it's defined in
191 template<template<endianness, std::size_t, bool> class ELFT,
192 endianness TargetEndianness, std::size_t MaxAlign>
193 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, true> > {
194 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
195 MaxAlign LLVM_ELF_COMMA true>)
196 Elf_Word st_name; // Symbol name (index into string table)
197 unsigned char st_info; // Symbol's type and binding attributes
198 unsigned char st_other; // Must be zero; reserved
199 Elf_Half st_shndx; // Which section (header table index) it's defined in
200 Elf_Addr st_value; // Value or address associated with the symbol
201 Elf_Xword st_size; // Size of the symbol
205 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
206 using Elf_Sym_Base<ELFT>::st_info;
208 // These accessors and mutators correspond to the ELF32_ST_BIND,
209 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
210 unsigned char getBinding() const { return st_info >> 4; }
211 unsigned char getType() const { return st_info & 0x0f; }
212 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
213 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
214 void setBindingAndType(unsigned char b, unsigned char t) {
215 st_info = (b << 4) + (t & 0x0f);
219 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
220 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
222 struct Elf_Versym_Impl {
223 LLVM_ELF_IMPORT_TYPES(ELFT)
224 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
228 struct Elf_Verdaux_Impl;
230 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
231 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
233 struct Elf_Verdef_Impl {
234 LLVM_ELF_IMPORT_TYPES(ELFT)
235 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
236 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
237 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
238 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
239 Elf_Half vd_cnt; // Number of Verdaux entries
240 Elf_Word vd_hash; // Hash of name
241 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
242 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
244 /// Get the first Verdaux entry for this Verdef.
245 const Elf_Verdaux *getAux() const {
246 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
250 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
251 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
253 struct Elf_Verdaux_Impl {
254 LLVM_ELF_IMPORT_TYPES(ELFT)
255 Elf_Word vda_name; // Version name (offset in string table)
256 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
259 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
260 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
262 struct Elf_Verneed_Impl {
263 LLVM_ELF_IMPORT_TYPES(ELFT)
264 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
265 Elf_Half vn_cnt; // Number of associated Vernaux entries
266 Elf_Word vn_file; // Library name (string table offset)
267 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
268 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
271 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
272 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
274 struct Elf_Vernaux_Impl {
275 LLVM_ELF_IMPORT_TYPES(ELFT)
276 Elf_Word vna_hash; // Hash of dependency name
277 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
278 Elf_Half vna_other; // Version index, used in .gnu.version entries
279 Elf_Word vna_name; // Dependency name
280 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
283 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
284 /// table section (.dynamic) look like.
288 template<template<endianness, std::size_t, bool> class ELFT,
289 endianness TargetEndianness, std::size_t MaxAlign>
290 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, false> > {
291 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
292 MaxAlign LLVM_ELF_COMMA false>)
300 template<template<endianness, std::size_t, bool> class ELFT,
301 endianness TargetEndianness, std::size_t MaxAlign>
302 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, true> > {
303 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
304 MaxAlign LLVM_ELF_COMMA true>)
312 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
314 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
315 using Elf_Dyn_Base<ELFT>::d_tag;
316 using Elf_Dyn_Base<ELFT>::d_un;
317 int64_t getTag() const { return d_tag; }
318 uint64_t getVal() const { return d_un.d_val; }
319 uint64_t getPtr() const { return d_un.ptr; }
322 // Elf_Rel: Elf Relocation
323 template<class ELFT, bool isRela>
326 template<template<endianness, std::size_t, bool> class ELFT,
327 endianness TargetEndianness, std::size_t MaxAlign>
328 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, false> {
329 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
330 MaxAlign LLVM_ELF_COMMA false>)
331 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
332 Elf_Word r_info; // Symbol table index and type of relocation to apply
335 template<template<endianness, std::size_t, bool> class ELFT,
336 endianness TargetEndianness, std::size_t MaxAlign>
337 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, false> {
338 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
339 MaxAlign LLVM_ELF_COMMA true>)
340 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
341 Elf_Xword r_info; // Symbol table index and type of relocation to apply
344 template<template<endianness, std::size_t, bool> class ELFT,
345 endianness TargetEndianness, std::size_t MaxAlign>
346 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, true> {
347 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
348 MaxAlign LLVM_ELF_COMMA false>)
349 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
350 Elf_Word r_info; // Symbol table index and type of relocation to apply
351 Elf_Sword r_addend; // Compute value for relocatable field by adding this
354 template<template<endianness, std::size_t, bool> class ELFT,
355 endianness TargetEndianness, std::size_t MaxAlign>
356 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, true> {
357 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
358 MaxAlign LLVM_ELF_COMMA true>)
359 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
360 Elf_Xword r_info; // Symbol table index and type of relocation to apply
361 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
364 template<class ELFT, bool isRela>
367 template<template<endianness, std::size_t, bool> class ELFT,
368 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
369 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, true>, isRela>
370 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela> {
371 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela>::r_info;
372 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
373 MaxAlign LLVM_ELF_COMMA true>)
375 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
376 // and ELF64_R_INFO macros defined in the ELF specification:
377 uint32_t getSymbol() const { return (uint32_t) (r_info >> 32); }
378 uint32_t getType() const {
379 return (uint32_t) (r_info & 0xffffffffL);
381 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
382 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
383 void setSymbolAndType(uint32_t s, uint32_t t) {
384 r_info = ((uint64_t)s << 32) + (t&0xffffffffL);
388 template<template<endianness, std::size_t, bool> class ELFT,
389 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
390 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, false>, isRela>
391 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela> {
392 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela>::r_info;
393 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
394 MaxAlign LLVM_ELF_COMMA false>)
396 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
397 // and ELF32_R_INFO macros defined in the ELF specification:
398 uint32_t getSymbol() const { return (r_info >> 8); }
399 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
400 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
401 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
402 void setSymbolAndType(uint32_t s, unsigned char t) {
403 r_info = (s << 8) + t;
408 struct Elf_Ehdr_Impl {
409 LLVM_ELF_IMPORT_TYPES(ELFT)
410 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
411 Elf_Half e_type; // Type of file (see ET_*)
412 Elf_Half e_machine; // Required architecture for this file (see EM_*)
413 Elf_Word e_version; // Must be equal to 1
414 Elf_Addr e_entry; // Address to jump to in order to start program
415 Elf_Off e_phoff; // Program header table's file offset, in bytes
416 Elf_Off e_shoff; // Section header table's file offset, in bytes
417 Elf_Word e_flags; // Processor-specific flags
418 Elf_Half e_ehsize; // Size of ELF header, in bytes
419 Elf_Half e_phentsize;// Size of an entry in the program header table
420 Elf_Half e_phnum; // Number of entries in the program header table
421 Elf_Half e_shentsize;// Size of an entry in the section header table
422 Elf_Half e_shnum; // Number of entries in the section header table
423 Elf_Half e_shstrndx; // Section header table index of section name
425 bool checkMagic() const {
426 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
428 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
429 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
433 struct Elf_Phdr_Impl;
435 template<template<endianness, std::size_t, bool> class ELFT,
436 endianness TargetEndianness, std::size_t MaxAlign>
437 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, false> > {
438 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
439 MaxAlign LLVM_ELF_COMMA false>)
440 Elf_Word p_type; // Type of segment
441 Elf_Off p_offset; // FileOffset where segment is located, in bytes
442 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
443 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
444 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
445 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
446 Elf_Word p_flags; // Segment flags
447 Elf_Word p_align; // Segment alignment constraint
450 template<template<endianness, std::size_t, bool> class ELFT,
451 endianness TargetEndianness, std::size_t MaxAlign>
452 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, true> > {
453 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
454 MaxAlign LLVM_ELF_COMMA true>)
455 Elf_Word p_type; // Type of segment
456 Elf_Word p_flags; // Segment flags
457 Elf_Off p_offset; // FileOffset where segment is located, in bytes
458 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
459 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
460 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
461 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
462 Elf_Xword p_align; // Segment alignment constraint
466 class ELFObjectFile : public ObjectFile {
467 LLVM_ELF_IMPORT_TYPES(ELFT)
470 /// \brief Iterate over constant sized entities.
472 class ELFEntityIterator {
474 typedef ptrdiff_t difference_type;
475 typedef EntT value_type;
476 typedef std::random_access_iterator_tag iterator_category;
477 typedef value_type &reference;
478 typedef value_type *pointer;
480 /// \brief Default construct iterator.
481 ELFEntityIterator() : EntitySize(0), Current(0) {}
482 ELFEntityIterator(uint64_t EntSize, const char *Start)
483 : EntitySize(EntSize)
486 reference operator *() {
487 assert(Current && "Attempted to dereference an invalid iterator!");
488 return *reinterpret_cast<pointer>(Current);
491 pointer operator ->() {
492 assert(Current && "Attempted to dereference an invalid iterator!");
493 return reinterpret_cast<pointer>(Current);
496 bool operator ==(const ELFEntityIterator &Other) {
497 return Current == Other.Current;
500 bool operator !=(const ELFEntityIterator &Other) {
501 return !(*this == Other);
504 ELFEntityIterator &operator ++() {
505 assert(Current && "Attempted to increment an invalid iterator!");
506 Current += EntitySize;
510 ELFEntityIterator operator ++(int) {
511 ELFEntityIterator Tmp = *this;
516 ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
517 EntitySize = Other.EntitySize;
518 Current = Other.Current;
522 difference_type operator -(const ELFEntityIterator &Other) const {
523 assert(EntitySize == Other.EntitySize &&
524 "Subtracting iterators of different EntitiySize!");
525 return (Current - Other.Current) / EntitySize;
528 const char *get() const { return Current; }
535 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
536 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
537 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
538 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
539 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
540 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
541 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
542 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
543 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
544 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
545 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
546 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
547 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
548 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
549 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
550 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
553 // This flag is used for classof, to distinguish ELFObjectFile from
554 // its subclass. If more subclasses will be created, this flag will
555 // have to become an enum.
556 bool isDyldELFObject;
559 typedef SmallVector<const Elf_Shdr *, 2> Sections_t;
560 typedef DenseMap<unsigned, unsigned> IndexMap_t;
561 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
563 const Elf_Ehdr *Header;
564 const Elf_Shdr *SectionHeaderTable;
565 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
566 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
567 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
569 // SymbolTableSections[0] always points to the dynamic string table section
570 // header, or NULL if there is no dynamic string table.
571 Sections_t SymbolTableSections;
572 IndexMap_t SymbolTableSectionsIndexMap;
573 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
575 const Elf_Shdr *dot_dynamic_sec; // .dynamic
576 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
577 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
578 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
580 // Pointer to SONAME entry in dynamic string table
581 // This is set the first time getLoadName is called.
582 mutable const char *dt_soname;
585 // Records for each version index the corresponding Verdef or Vernaux entry.
586 // This is filled the first time LoadVersionMap() is called.
587 class VersionMapEntry : public PointerIntPair<const void*, 1> {
589 // If the integer is 0, this is an Elf_Verdef*.
590 // If the integer is 1, this is an Elf_Vernaux*.
591 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
592 VersionMapEntry(const Elf_Verdef *verdef)
593 : PointerIntPair<const void*, 1>(verdef, 0) { }
594 VersionMapEntry(const Elf_Vernaux *vernaux)
595 : PointerIntPair<const void*, 1>(vernaux, 1) { }
596 bool isNull() const { return getPointer() == NULL; }
597 bool isVerdef() const { return !isNull() && getInt() == 0; }
598 bool isVernaux() const { return !isNull() && getInt() == 1; }
599 const Elf_Verdef *getVerdef() const {
600 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
602 const Elf_Vernaux *getVernaux() const {
603 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
606 mutable SmallVector<VersionMapEntry, 16> VersionMap;
607 void LoadVersionDefs(const Elf_Shdr *sec) const;
608 void LoadVersionNeeds(const Elf_Shdr *ec) const;
609 void LoadVersionMap() const;
611 /// @brief Map sections to an array of relocation sections that reference
612 /// them sorted by section index.
613 RelocMap_t SectionRelocMap;
615 /// @brief Get the relocation section that contains \a Rel.
616 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
617 return getSection(Rel.w.b);
621 bool isRelocationHasAddend(DataRefImpl Rel) const;
623 const T *getEntry(uint16_t Section, uint32_t Entry) const;
625 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
626 const Elf_Shdr *getSection(DataRefImpl index) const;
627 const Elf_Shdr *getSection(uint32_t index) const;
628 const Elf_Rel *getRel(DataRefImpl Rel) const;
629 const Elf_Rela *getRela(DataRefImpl Rela) const;
630 const char *getString(uint32_t section, uint32_t offset) const;
631 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
632 error_code getSymbolVersion(const Elf_Shdr *section,
635 bool &IsDefault) const;
636 void VerifyStrTab(const Elf_Shdr *sh) const;
639 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
640 void validateSymbol(DataRefImpl Symb) const;
643 error_code getSymbolName(const Elf_Shdr *section,
645 StringRef &Res) const;
646 error_code getSectionName(const Elf_Shdr *section,
647 StringRef &Res) const;
648 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
649 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
650 bool &IsDefault) const;
651 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
653 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
654 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
655 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
656 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
657 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
658 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
659 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
660 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
661 virtual error_code getSymbolSection(DataRefImpl Symb,
662 section_iterator &Res) const;
663 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
665 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
666 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
668 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
669 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
670 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
671 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
672 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
673 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
674 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
675 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
676 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
677 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
679 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
680 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
681 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
682 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
684 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
685 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
687 virtual error_code getRelocationNext(DataRefImpl Rel,
688 RelocationRef &Res) const;
689 virtual error_code getRelocationAddress(DataRefImpl Rel,
690 uint64_t &Res) const;
691 virtual error_code getRelocationOffset(DataRefImpl Rel,
692 uint64_t &Res) const;
693 virtual error_code getRelocationSymbol(DataRefImpl Rel,
694 SymbolRef &Res) const;
695 virtual error_code getRelocationType(DataRefImpl Rel,
696 uint64_t &Res) const;
697 virtual error_code getRelocationTypeName(DataRefImpl Rel,
698 SmallVectorImpl<char> &Result) const;
699 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
701 virtual error_code getRelocationValueString(DataRefImpl Rel,
702 SmallVectorImpl<char> &Result) const;
705 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
706 virtual symbol_iterator begin_symbols() const;
707 virtual symbol_iterator end_symbols() const;
709 virtual symbol_iterator begin_dynamic_symbols() const;
710 virtual symbol_iterator end_dynamic_symbols() const;
712 virtual section_iterator begin_sections() const;
713 virtual section_iterator end_sections() const;
715 virtual library_iterator begin_libraries_needed() const;
716 virtual library_iterator end_libraries_needed() const;
718 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
719 return SymbolTableSections[0];
722 const Elf_Shdr *getDynamicStringTableSectionHeader() const {
723 return dot_dynstr_sec;
726 Elf_Dyn_iterator begin_dynamic_table() const;
727 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
728 /// the section size.
729 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
731 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
732 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
734 return Elf_Sym_iterator(DynSymtab->sh_entsize,
735 (const char *)base() + DynSymtab->sh_offset);
736 return Elf_Sym_iterator(0, 0);
739 Elf_Sym_iterator end_elf_dynamic_symbols() const {
740 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
742 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
743 DynSymtab->sh_offset + DynSymtab->sh_size);
744 return Elf_Sym_iterator(0, 0);
747 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
748 return Elf_Rela_Iter(sec->sh_entsize,
749 (const char *)(base() + sec->sh_offset));
752 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
753 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
754 (base() + sec->sh_offset + sec->sh_size));
757 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
758 return Elf_Rel_Iter(sec->sh_entsize,
759 (const char *)(base() + sec->sh_offset));
762 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
763 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
764 (base() + sec->sh_offset + sec->sh_size));
767 /// \brief Iterate over program header table.
768 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
770 Elf_Phdr_Iter begin_program_headers() const {
771 return Elf_Phdr_Iter(Header->e_phentsize,
772 (const char*)base() + Header->e_phoff);
775 Elf_Phdr_Iter end_program_headers() const {
776 return Elf_Phdr_Iter(Header->e_phentsize,
777 (const char*)base() +
779 (Header->e_phnum * Header->e_phentsize));
782 virtual uint8_t getBytesInAddress() const;
783 virtual StringRef getFileFormatName() const;
784 virtual StringRef getObjectType() const { return "ELF"; }
785 virtual unsigned getArch() const;
786 virtual StringRef getLoadName() const;
787 virtual error_code getSectionContents(const Elf_Shdr *sec,
788 StringRef &Res) const;
790 uint64_t getNumSections() const;
791 uint64_t getStringTableIndex() const;
792 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
793 const Elf_Ehdr *getElfHeader() const;
794 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
795 const Elf_Shdr *getElfSection(section_iterator &It) const;
796 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
797 const Elf_Sym *getElfSymbol(uint32_t index) const;
799 // Methods for type inquiry through isa, cast, and dyn_cast
800 bool isDyldType() const { return isDyldELFObject; }
801 static inline bool classof(const Binary *v) {
802 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
807 // Iterate through the version definitions, and place each Elf_Verdef
808 // in the VersionMap according to its index.
810 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
811 unsigned vd_size = sec->sh_size; // Size of section in bytes
812 unsigned vd_count = sec->sh_info; // Number of Verdef entries
813 const char *sec_start = (const char*)base() + sec->sh_offset;
814 const char *sec_end = sec_start + vd_size;
815 // The first Verdef entry is at the start of the section.
816 const char *p = sec_start;
817 for (unsigned i = 0; i < vd_count; i++) {
818 if (p + sizeof(Elf_Verdef) > sec_end)
819 report_fatal_error("Section ended unexpectedly while scanning "
820 "version definitions.");
821 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
822 if (vd->vd_version != ELF::VER_DEF_CURRENT)
823 report_fatal_error("Unexpected verdef version");
824 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
825 if (index >= VersionMap.size())
826 VersionMap.resize(index+1);
827 VersionMap[index] = VersionMapEntry(vd);
832 // Iterate through the versions needed section, and place each Elf_Vernaux
833 // in the VersionMap according to its index.
835 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
836 unsigned vn_size = sec->sh_size; // Size of section in bytes
837 unsigned vn_count = sec->sh_info; // Number of Verneed entries
838 const char *sec_start = (const char*)base() + sec->sh_offset;
839 const char *sec_end = sec_start + vn_size;
840 // The first Verneed entry is at the start of the section.
841 const char *p = sec_start;
842 for (unsigned i = 0; i < vn_count; i++) {
843 if (p + sizeof(Elf_Verneed) > sec_end)
844 report_fatal_error("Section ended unexpectedly while scanning "
845 "version needed records.");
846 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
847 if (vn->vn_version != ELF::VER_NEED_CURRENT)
848 report_fatal_error("Unexpected verneed version");
849 // Iterate through the Vernaux entries
850 const char *paux = p + vn->vn_aux;
851 for (unsigned j = 0; j < vn->vn_cnt; j++) {
852 if (paux + sizeof(Elf_Vernaux) > sec_end)
853 report_fatal_error("Section ended unexpected while scanning auxiliary "
854 "version needed records.");
855 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
856 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
857 if (index >= VersionMap.size())
858 VersionMap.resize(index+1);
859 VersionMap[index] = VersionMapEntry(vna);
860 paux += vna->vna_next;
867 void ELFObjectFile<ELFT>::LoadVersionMap() const {
868 // If there is no dynamic symtab or version table, there is nothing to do.
869 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
872 // Has the VersionMap already been loaded?
873 if (VersionMap.size() > 0)
876 // The first two version indexes are reserved.
877 // Index 0 is LOCAL, index 1 is GLOBAL.
878 VersionMap.push_back(VersionMapEntry());
879 VersionMap.push_back(VersionMapEntry());
881 if (dot_gnu_version_d_sec)
882 LoadVersionDefs(dot_gnu_version_d_sec);
884 if (dot_gnu_version_r_sec)
885 LoadVersionNeeds(dot_gnu_version_r_sec);
889 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
891 const Elf_Sym *symb = getSymbol(Symb);
892 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
893 // FIXME: We really need to do proper error handling in the case of an invalid
894 // input file. Because we don't use exceptions, I think we'll just pass
895 // an error object around.
897 && SymbolTableSection
898 && symb >= (const Elf_Sym*)(base()
899 + SymbolTableSection->sh_offset)
900 && symb < (const Elf_Sym*)(base()
901 + SymbolTableSection->sh_offset
902 + SymbolTableSection->sh_size)))
903 // FIXME: Proper error handling.
904 report_fatal_error("Symb must point to a valid symbol!");
909 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
910 SymbolRef &Result) const {
911 validateSymbol(Symb);
912 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
915 // Check to see if we are at the end of this symbol table.
916 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
917 // We are at the end. If there are other symbol tables, jump to them.
918 // If the symbol table is .dynsym, we are iterating dynamic symbols,
919 // and there is only one table of these.
922 Symb.d.a = 1; // The 0th symbol in ELF is fake.
924 // Otherwise return the terminator.
925 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
926 Symb.d.a = std::numeric_limits<uint32_t>::max();
927 Symb.d.b = std::numeric_limits<uint32_t>::max();
931 Result = SymbolRef(Symb, this);
932 return object_error::success;
936 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
937 StringRef &Result) const {
938 validateSymbol(Symb);
939 const Elf_Sym *symb = getSymbol(Symb);
940 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
944 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
946 bool &IsDefault) const {
947 DataRefImpl Symb = SymRef.getRawDataRefImpl();
948 validateSymbol(Symb);
949 const Elf_Sym *symb = getSymbol(Symb);
950 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
955 ELF::Elf64_Word ELFObjectFile<ELFT>
956 ::getSymbolTableIndex(const Elf_Sym *symb) const {
957 if (symb->st_shndx == ELF::SHN_XINDEX)
958 return ExtendedSymbolTable.lookup(symb);
959 return symb->st_shndx;
963 const typename ELFObjectFile<ELFT>::Elf_Shdr *
964 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
965 if (symb->st_shndx == ELF::SHN_XINDEX)
966 return getSection(ExtendedSymbolTable.lookup(symb));
967 if (symb->st_shndx >= ELF::SHN_LORESERVE)
969 return getSection(symb->st_shndx);
973 const typename ELFObjectFile<ELFT>::Elf_Ehdr *
974 ELFObjectFile<ELFT>::getElfHeader() const {
979 const typename ELFObjectFile<ELFT>::Elf_Shdr *
980 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
981 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
982 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
986 const typename ELFObjectFile<ELFT>::Elf_Sym *
987 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
988 return getSymbol(It->getRawDataRefImpl());
992 const typename ELFObjectFile<ELFT>::Elf_Sym *
993 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
994 DataRefImpl SymbolData;
995 SymbolData.d.a = index;
997 return getSymbol(SymbolData);
1000 template<class ELFT>
1001 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1002 uint64_t &Result) const {
1003 validateSymbol(Symb);
1004 const Elf_Sym *symb = getSymbol(Symb);
1005 const Elf_Shdr *Section;
1006 switch (getSymbolTableIndex(symb)) {
1007 case ELF::SHN_COMMON:
1008 // Unintialized symbols have no offset in the object file
1009 case ELF::SHN_UNDEF:
1010 Result = UnknownAddressOrSize;
1011 return object_error::success;
1013 Result = symb->st_value;
1014 return object_error::success;
1015 default: Section = getSection(symb);
1018 switch (symb->getType()) {
1019 case ELF::STT_SECTION:
1020 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1021 return object_error::success;
1023 case ELF::STT_OBJECT:
1024 case ELF::STT_NOTYPE:
1025 Result = symb->st_value +
1026 (Section ? Section->sh_offset : 0);
1027 return object_error::success;
1029 Result = UnknownAddressOrSize;
1030 return object_error::success;
1034 template<class ELFT>
1035 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1036 uint64_t &Result) const {
1037 validateSymbol(Symb);
1038 const Elf_Sym *symb = getSymbol(Symb);
1039 const Elf_Shdr *Section;
1040 switch (getSymbolTableIndex(symb)) {
1041 case ELF::SHN_COMMON:
1042 case ELF::SHN_UNDEF:
1043 Result = UnknownAddressOrSize;
1044 return object_error::success;
1046 Result = symb->st_value;
1047 return object_error::success;
1048 default: Section = getSection(symb);
1051 switch (symb->getType()) {
1052 case ELF::STT_SECTION:
1053 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1054 return object_error::success;
1056 case ELF::STT_OBJECT:
1057 case ELF::STT_NOTYPE:
1059 switch(Header->e_type) {
1062 IsRelocatable = false;
1065 IsRelocatable = true;
1067 Result = symb->st_value;
1069 // Clear the ARM/Thumb indicator flag.
1070 if (Header->e_machine == ELF::EM_ARM)
1073 if (IsRelocatable && Section != 0)
1074 Result += Section->sh_addr;
1075 return object_error::success;
1077 Result = UnknownAddressOrSize;
1078 return object_error::success;
1082 template<class ELFT>
1083 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1084 uint64_t &Result) const {
1085 validateSymbol(Symb);
1086 const Elf_Sym *symb = getSymbol(Symb);
1087 if (symb->st_size == 0)
1088 Result = UnknownAddressOrSize;
1089 Result = symb->st_size;
1090 return object_error::success;
1093 template<class ELFT>
1094 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1095 char &Result) const {
1096 validateSymbol(Symb);
1097 const Elf_Sym *symb = getSymbol(Symb);
1098 const Elf_Shdr *Section = getSection(symb);
1103 switch (Section->sh_type) {
1104 case ELF::SHT_PROGBITS:
1105 case ELF::SHT_DYNAMIC:
1106 switch (Section->sh_flags) {
1107 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1109 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1111 case ELF::SHF_ALLOC:
1112 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1113 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1117 case ELF::SHT_NOBITS: ret = 'b';
1121 switch (getSymbolTableIndex(symb)) {
1122 case ELF::SHN_UNDEF:
1126 case ELF::SHN_ABS: ret = 'a'; break;
1127 case ELF::SHN_COMMON: ret = 'c'; break;
1130 switch (symb->getBinding()) {
1131 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1133 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1136 if (symb->getType() == ELF::STT_OBJECT)
1142 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1144 if (error_code ec = getSymbolName(Symb, name))
1146 Result = StringSwitch<char>(name)
1147 .StartsWith(".debug", 'N')
1148 .StartsWith(".note", 'n')
1150 return object_error::success;
1154 return object_error::success;
1157 template<class ELFT>
1158 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1159 SymbolRef::Type &Result) const {
1160 validateSymbol(Symb);
1161 const Elf_Sym *symb = getSymbol(Symb);
1163 switch (symb->getType()) {
1164 case ELF::STT_NOTYPE:
1165 Result = SymbolRef::ST_Unknown;
1167 case ELF::STT_SECTION:
1168 Result = SymbolRef::ST_Debug;
1171 Result = SymbolRef::ST_File;
1174 Result = SymbolRef::ST_Function;
1176 case ELF::STT_OBJECT:
1177 case ELF::STT_COMMON:
1179 Result = SymbolRef::ST_Data;
1182 Result = SymbolRef::ST_Other;
1185 return object_error::success;
1188 template<class ELFT>
1189 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1190 uint32_t &Result) const {
1191 validateSymbol(Symb);
1192 const Elf_Sym *symb = getSymbol(Symb);
1194 Result = SymbolRef::SF_None;
1196 if (symb->getBinding() != ELF::STB_LOCAL)
1197 Result |= SymbolRef::SF_Global;
1199 if (symb->getBinding() == ELF::STB_WEAK)
1200 Result |= SymbolRef::SF_Weak;
1202 if (symb->st_shndx == ELF::SHN_ABS)
1203 Result |= SymbolRef::SF_Absolute;
1205 if (symb->getType() == ELF::STT_FILE ||
1206 symb->getType() == ELF::STT_SECTION)
1207 Result |= SymbolRef::SF_FormatSpecific;
1209 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1210 Result |= SymbolRef::SF_Undefined;
1212 if (symb->getType() == ELF::STT_COMMON ||
1213 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1214 Result |= SymbolRef::SF_Common;
1216 if (symb->getType() == ELF::STT_TLS)
1217 Result |= SymbolRef::SF_ThreadLocal;
1219 return object_error::success;
1222 template<class ELFT>
1223 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1224 section_iterator &Res) const {
1225 validateSymbol(Symb);
1226 const Elf_Sym *symb = getSymbol(Symb);
1227 const Elf_Shdr *sec = getSection(symb);
1229 Res = end_sections();
1232 Sec.p = reinterpret_cast<intptr_t>(sec);
1233 Res = section_iterator(SectionRef(Sec, this));
1235 return object_error::success;
1238 template<class ELFT>
1239 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1240 uint64_t &Val) const {
1241 validateSymbol(Symb);
1242 const Elf_Sym *symb = getSymbol(Symb);
1243 Val = symb->st_value;
1244 return object_error::success;
1247 template<class ELFT>
1248 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1249 SectionRef &Result) const {
1250 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1251 sec += Header->e_shentsize;
1252 Sec.p = reinterpret_cast<intptr_t>(sec);
1253 Result = SectionRef(Sec, this);
1254 return object_error::success;
1257 template<class ELFT>
1258 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1259 StringRef &Result) const {
1260 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1261 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1262 return object_error::success;
1265 template<class ELFT>
1266 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1267 uint64_t &Result) const {
1268 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1269 Result = sec->sh_addr;
1270 return object_error::success;
1273 template<class ELFT>
1274 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1275 uint64_t &Result) const {
1276 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1277 Result = sec->sh_size;
1278 return object_error::success;
1281 template<class ELFT>
1282 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1283 StringRef &Result) const {
1284 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1285 const char *start = (const char*)base() + sec->sh_offset;
1286 Result = StringRef(start, sec->sh_size);
1287 return object_error::success;
1290 template<class ELFT>
1291 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1292 StringRef &Result) const {
1293 const char *start = (const char*)base() + Sec->sh_offset;
1294 Result = StringRef(start, Sec->sh_size);
1295 return object_error::success;
1298 template<class ELFT>
1299 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1300 uint64_t &Result) const {
1301 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1302 Result = sec->sh_addralign;
1303 return object_error::success;
1306 template<class ELFT>
1307 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1308 bool &Result) const {
1309 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1310 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1314 return object_error::success;
1317 template<class ELFT>
1318 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1319 bool &Result) const {
1320 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1321 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1322 && sec->sh_type == ELF::SHT_PROGBITS)
1326 return object_error::success;
1329 template<class ELFT>
1330 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1331 bool &Result) const {
1332 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1333 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1334 && sec->sh_type == ELF::SHT_NOBITS)
1338 return object_error::success;
1341 template<class ELFT>
1342 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1343 DataRefImpl Sec, bool &Result) const {
1344 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1345 if (sec->sh_flags & ELF::SHF_ALLOC)
1349 return object_error::success;
1352 template<class ELFT>
1353 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1354 bool &Result) const {
1355 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1356 if (sec->sh_type == ELF::SHT_NOBITS)
1360 return object_error::success;
1363 template<class ELFT>
1364 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1365 bool &Result) const {
1366 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1367 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1368 // in the object image) and vice versa.
1369 Result = sec->sh_type == ELF::SHT_NOBITS;
1370 return object_error::success;
1373 template<class ELFT>
1374 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1375 bool &Result) const {
1376 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1377 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1381 return object_error::success;
1384 template<class ELFT>
1385 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1387 bool &Result) const {
1388 validateSymbol(Symb);
1390 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1391 const Elf_Sym *symb = getSymbol(Symb);
1393 unsigned shndx = symb->st_shndx;
1394 bool Reserved = shndx >= ELF::SHN_LORESERVE
1395 && shndx <= ELF::SHN_HIRESERVE;
1397 Result = !Reserved && (sec == getSection(symb->st_shndx));
1398 return object_error::success;
1401 template<class ELFT>
1403 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1404 DataRefImpl RelData;
1405 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1406 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1407 if (sec != 0 && ittr != SectionRelocMap.end()) {
1408 RelData.w.a = getSection(ittr->second[0])->sh_info;
1409 RelData.w.b = ittr->second[0];
1412 return relocation_iterator(RelocationRef(RelData, this));
1415 template<class ELFT>
1417 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1418 DataRefImpl RelData;
1419 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1420 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1421 if (sec != 0 && ittr != SectionRelocMap.end()) {
1422 // Get the index of the last relocation section for this section.
1423 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1424 const Elf_Shdr *relocsec = getSection(relocsecindex);
1425 RelData.w.a = relocsec->sh_info;
1426 RelData.w.b = relocsecindex;
1427 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1429 return relocation_iterator(RelocationRef(RelData, this));
1433 template<class ELFT>
1434 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1435 RelocationRef &Result) const {
1437 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1438 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1439 // We have reached the end of the relocations for this section. See if there
1440 // is another relocation section.
1441 typename RelocMap_t::mapped_type relocseclist =
1442 SectionRelocMap.lookup(getSection(Rel.w.a));
1444 // Do a binary search for the current reloc section index (which must be
1445 // present). Then get the next one.
1446 typename RelocMap_t::mapped_type::const_iterator loc =
1447 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1450 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1451 // to the end iterator.
1452 if (loc != relocseclist.end()) {
1457 Result = RelocationRef(Rel, this);
1458 return object_error::success;
1461 template<class ELFT>
1462 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1463 SymbolRef &Result) const {
1465 const Elf_Shdr *sec = getSection(Rel.w.b);
1466 switch (sec->sh_type) {
1468 report_fatal_error("Invalid section type in Rel!");
1469 case ELF::SHT_REL : {
1470 symbolIdx = getRel(Rel)->getSymbol();
1473 case ELF::SHT_RELA : {
1474 symbolIdx = getRela(Rel)->getSymbol();
1478 DataRefImpl SymbolData;
1479 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1480 if (it == SymbolTableSectionsIndexMap.end())
1481 report_fatal_error("Relocation symbol table not found!");
1482 SymbolData.d.a = symbolIdx;
1483 SymbolData.d.b = it->second;
1484 Result = SymbolRef(SymbolData, this);
1485 return object_error::success;
1488 template<class ELFT>
1489 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1490 uint64_t &Result) const {
1492 const Elf_Shdr *sec = getSection(Rel.w.b);
1493 switch (sec->sh_type) {
1495 report_fatal_error("Invalid section type in Rel!");
1496 case ELF::SHT_REL : {
1497 offset = getRel(Rel)->r_offset;
1500 case ELF::SHT_RELA : {
1501 offset = getRela(Rel)->r_offset;
1507 return object_error::success;
1510 template<class ELFT>
1511 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1512 uint64_t &Result) const {
1514 const Elf_Shdr *sec = getSection(Rel.w.b);
1515 switch (sec->sh_type) {
1517 report_fatal_error("Invalid section type in Rel!");
1518 case ELF::SHT_REL : {
1519 offset = getRel(Rel)->r_offset;
1522 case ELF::SHT_RELA : {
1523 offset = getRela(Rel)->r_offset;
1528 Result = offset - sec->sh_addr;
1529 return object_error::success;
1532 template<class ELFT>
1533 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1534 uint64_t &Result) const {
1535 const Elf_Shdr *sec = getSection(Rel.w.b);
1536 switch (sec->sh_type) {
1538 report_fatal_error("Invalid section type in Rel!");
1539 case ELF::SHT_REL : {
1540 Result = getRel(Rel)->getType();
1543 case ELF::SHT_RELA : {
1544 Result = getRela(Rel)->getType();
1548 return object_error::success;
1551 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1552 case ELF::enum: res = #enum; break;
1554 template<class ELFT>
1555 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1556 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1557 const Elf_Shdr *sec = getSection(Rel.w.b);
1560 switch (sec->sh_type) {
1562 return object_error::parse_failed;
1563 case ELF::SHT_REL : {
1564 type = getRel(Rel)->getType();
1567 case ELF::SHT_RELA : {
1568 type = getRela(Rel)->getType();
1572 switch (Header->e_machine) {
1573 case ELF::EM_X86_64:
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1591 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1592 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1714 case ELF::EM_AARCH64:
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1931 case ELF::EM_HEXAGON:
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1947 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1948 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1949 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1950 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1951 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1952 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1953 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1954 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1955 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1956 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1985 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1986 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1987 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1988 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1989 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1990 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2012 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2013 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2014 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2015 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2016 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2017 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2018 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2026 Result.append(res.begin(), res.end());
2027 return object_error::success;
2030 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2032 template<class ELFT>
2033 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
2034 DataRefImpl Rel, int64_t &Result) const {
2035 const Elf_Shdr *sec = getSection(Rel.w.b);
2036 switch (sec->sh_type) {
2038 report_fatal_error("Invalid section type in Rel!");
2039 case ELF::SHT_REL : {
2041 return object_error::success;
2043 case ELF::SHT_RELA : {
2044 Result = getRela(Rel)->r_addend;
2045 return object_error::success;
2050 template<class ELFT>
2051 error_code ELFObjectFile<ELFT>::getRelocationValueString(
2052 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2053 const Elf_Shdr *sec = getSection(Rel.w.b);
2057 uint16_t symbol_index = 0;
2058 switch (sec->sh_type) {
2060 return object_error::parse_failed;
2061 case ELF::SHT_REL: {
2062 type = getRel(Rel)->getType();
2063 symbol_index = getRel(Rel)->getSymbol();
2064 // TODO: Read implicit addend from section data.
2067 case ELF::SHT_RELA: {
2068 type = getRela(Rel)->getType();
2069 symbol_index = getRela(Rel)->getSymbol();
2070 addend = getRela(Rel)->r_addend;
2074 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2076 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2078 switch (Header->e_machine) {
2079 case ELF::EM_X86_64:
2081 case ELF::R_X86_64_PC8:
2082 case ELF::R_X86_64_PC16:
2083 case ELF::R_X86_64_PC32: {
2085 raw_string_ostream fmt(fmtbuf);
2086 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2088 Result.append(fmtbuf.begin(), fmtbuf.end());
2091 case ELF::R_X86_64_8:
2092 case ELF::R_X86_64_16:
2093 case ELF::R_X86_64_32:
2094 case ELF::R_X86_64_32S:
2095 case ELF::R_X86_64_64: {
2097 raw_string_ostream fmt(fmtbuf);
2098 fmt << symname << (addend < 0 ? "" : "+") << addend;
2100 Result.append(fmtbuf.begin(), fmtbuf.end());
2107 case ELF::EM_AARCH64:
2109 case ELF::EM_HEXAGON:
2116 Result.append(res.begin(), res.end());
2117 return object_error::success;
2120 // Verify that the last byte in the string table in a null.
2121 template<class ELFT>
2122 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2123 const char *strtab = (const char*)base() + sh->sh_offset;
2124 if (strtab[sh->sh_size - 1] != 0)
2125 // FIXME: Proper error handling.
2126 report_fatal_error("String table must end with a null terminator!");
2129 template<class ELFT>
2130 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2131 : ObjectFile(getELFType(
2132 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2136 , isDyldELFObject(false)
2137 , SectionHeaderTable(0)
2138 , dot_shstrtab_sec(0)
2141 , dot_dynamic_sec(0)
2142 , dot_gnu_version_sec(0)
2143 , dot_gnu_version_r_sec(0)
2144 , dot_gnu_version_d_sec(0)
2148 const uint64_t FileSize = Data->getBufferSize();
2150 if (sizeof(Elf_Ehdr) > FileSize)
2151 // FIXME: Proper error handling.
2152 report_fatal_error("File too short!");
2154 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2156 if (Header->e_shoff == 0)
2159 const uint64_t SectionTableOffset = Header->e_shoff;
2161 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2162 // FIXME: Proper error handling.
2163 report_fatal_error("Section header table goes past end of file!");
2165 // The getNumSections() call below depends on SectionHeaderTable being set.
2166 SectionHeaderTable =
2167 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2168 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2170 if (SectionTableOffset + SectionTableSize > FileSize)
2171 // FIXME: Proper error handling.
2172 report_fatal_error("Section table goes past end of file!");
2174 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2175 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2176 const Elf_Shdr* sh = SectionHeaderTable;
2178 // Reserve SymbolTableSections[0] for .dynsym
2179 SymbolTableSections.push_back(NULL);
2181 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2182 switch (sh->sh_type) {
2183 case ELF::SHT_SYMTAB_SHNDX: {
2184 if (SymbolTableSectionHeaderIndex)
2185 // FIXME: Proper error handling.
2186 report_fatal_error("More than one .symtab_shndx!");
2187 SymbolTableSectionHeaderIndex = sh;
2190 case ELF::SHT_SYMTAB: {
2191 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2192 SymbolTableSections.push_back(sh);
2195 case ELF::SHT_DYNSYM: {
2196 if (SymbolTableSections[0] != NULL)
2197 // FIXME: Proper error handling.
2198 report_fatal_error("More than one .dynsym!");
2199 SymbolTableSectionsIndexMap[i] = 0;
2200 SymbolTableSections[0] = sh;
2204 case ELF::SHT_RELA: {
2205 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2208 case ELF::SHT_DYNAMIC: {
2209 if (dot_dynamic_sec != NULL)
2210 // FIXME: Proper error handling.
2211 report_fatal_error("More than one .dynamic!");
2212 dot_dynamic_sec = sh;
2215 case ELF::SHT_GNU_versym: {
2216 if (dot_gnu_version_sec != NULL)
2217 // FIXME: Proper error handling.
2218 report_fatal_error("More than one .gnu.version section!");
2219 dot_gnu_version_sec = sh;
2222 case ELF::SHT_GNU_verdef: {
2223 if (dot_gnu_version_d_sec != NULL)
2224 // FIXME: Proper error handling.
2225 report_fatal_error("More than one .gnu.version_d section!");
2226 dot_gnu_version_d_sec = sh;
2229 case ELF::SHT_GNU_verneed: {
2230 if (dot_gnu_version_r_sec != NULL)
2231 // FIXME: Proper error handling.
2232 report_fatal_error("More than one .gnu.version_r section!");
2233 dot_gnu_version_r_sec = sh;
2240 // Sort section relocation lists by index.
2241 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2242 e = SectionRelocMap.end(); i != e; ++i) {
2243 std::sort(i->second.begin(), i->second.end());
2246 // Get string table sections.
2247 dot_shstrtab_sec = getSection(getStringTableIndex());
2248 if (dot_shstrtab_sec) {
2249 // Verify that the last byte in the string table in a null.
2250 VerifyStrTab(dot_shstrtab_sec);
2253 // Merge this into the above loop.
2254 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2255 *e = i + getNumSections() * Header->e_shentsize;
2256 i != e; i += Header->e_shentsize) {
2257 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2258 if (sh->sh_type == ELF::SHT_STRTAB) {
2259 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2260 if (SectionName == ".strtab") {
2261 if (dot_strtab_sec != 0)
2262 // FIXME: Proper error handling.
2263 report_fatal_error("Already found section named .strtab!");
2264 dot_strtab_sec = sh;
2265 VerifyStrTab(dot_strtab_sec);
2266 } else if (SectionName == ".dynstr") {
2267 if (dot_dynstr_sec != 0)
2268 // FIXME: Proper error handling.
2269 report_fatal_error("Already found section named .dynstr!");
2270 dot_dynstr_sec = sh;
2271 VerifyStrTab(dot_dynstr_sec);
2276 // Build symbol name side-mapping if there is one.
2277 if (SymbolTableSectionHeaderIndex) {
2278 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2279 SymbolTableSectionHeaderIndex->sh_offset);
2281 for (symbol_iterator si = begin_symbols(),
2282 se = end_symbols(); si != se; si.increment(ec)) {
2284 report_fatal_error("Fewer extended symbol table entries than symbols!");
2285 if (*ShndxTable != ELF::SHN_UNDEF)
2286 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2292 // Get the symbol table index in the symtab section given a symbol
2293 template<class ELFT>
2294 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2295 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2296 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2297 uintptr_t SymLoc = uintptr_t(Sym);
2298 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2299 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2300 uint64_t SymOffset = SymLoc - SymTabLoc;
2301 assert(SymOffset % SymTab->sh_entsize == 0 &&
2302 "Symbol not multiple of symbol size!");
2303 return SymOffset / SymTab->sh_entsize;
2306 template<class ELFT>
2307 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2308 DataRefImpl SymbolData;
2309 if (SymbolTableSections.size() <= 1) {
2310 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2311 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2313 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2314 SymbolData.d.b = 1; // The 0th table is .dynsym
2316 return symbol_iterator(SymbolRef(SymbolData, this));
2319 template<class ELFT>
2320 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2321 DataRefImpl SymbolData;
2322 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2323 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2324 return symbol_iterator(SymbolRef(SymbolData, this));
2327 template<class ELFT>
2328 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2329 DataRefImpl SymbolData;
2330 if (SymbolTableSections[0] == NULL) {
2331 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2332 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2334 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2335 SymbolData.d.b = 0; // The 0th table is .dynsym
2337 return symbol_iterator(SymbolRef(SymbolData, this));
2340 template<class ELFT>
2341 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2342 DataRefImpl SymbolData;
2343 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2344 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2345 return symbol_iterator(SymbolRef(SymbolData, this));
2348 template<class ELFT>
2349 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2351 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2352 return section_iterator(SectionRef(ret, this));
2355 template<class ELFT>
2356 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2358 ret.p = reinterpret_cast<intptr_t>(base()
2360 + (Header->e_shentsize*getNumSections()));
2361 return section_iterator(SectionRef(ret, this));
2364 template<class ELFT>
2365 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2366 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2367 if (dot_dynamic_sec)
2368 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2369 (const char *)base() + dot_dynamic_sec->sh_offset);
2370 return Elf_Dyn_iterator(0, 0);
2373 template<class ELFT>
2374 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2375 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2376 if (dot_dynamic_sec) {
2377 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2378 (const char *)base() + dot_dynamic_sec->sh_offset +
2379 dot_dynamic_sec->sh_size);
2382 Elf_Dyn_iterator Start = begin_dynamic_table();
2383 while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2386 // Include the DT_NULL.
2393 return Elf_Dyn_iterator(0, 0);
2396 template<class ELFT>
2397 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2399 // Find the DT_SONAME entry
2400 Elf_Dyn_iterator it = begin_dynamic_table();
2401 Elf_Dyn_iterator ie = end_dynamic_table();
2402 while (it != ie && it->getTag() != ELF::DT_SONAME)
2406 if (dot_dynstr_sec == NULL)
2407 report_fatal_error("Dynamic string table is missing");
2408 dt_soname = getString(dot_dynstr_sec, it->getVal());
2416 template<class ELFT>
2417 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2418 // Find the first DT_NEEDED entry
2419 Elf_Dyn_iterator i = begin_dynamic_table();
2420 Elf_Dyn_iterator e = end_dynamic_table();
2421 while (i != e && i->getTag() != ELF::DT_NEEDED)
2425 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2426 return library_iterator(LibraryRef(DRI, this));
2429 template<class ELFT>
2430 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2431 LibraryRef &Result) const {
2432 // Use the same DataRefImpl format as DynRef.
2433 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2434 reinterpret_cast<const char *>(Data.p));
2435 Elf_Dyn_iterator e = end_dynamic_table();
2437 // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2440 while (i != e && i->getTag() != ELF::DT_NEEDED);
2443 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2444 Result = LibraryRef(DRI, this);
2445 return object_error::success;
2448 template<class ELFT>
2449 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2450 StringRef &Res) const {
2451 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2452 reinterpret_cast<const char *>(Data.p));
2453 if (i == end_dynamic_table())
2454 report_fatal_error("getLibraryPath() called on iterator end");
2456 if (i->getTag() != ELF::DT_NEEDED)
2457 report_fatal_error("Invalid library_iterator");
2459 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2460 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2461 // the time, but the specification allows exceptions.
2462 // TODO: This should really use DT_STRTAB instead. Doing this requires
2463 // reading the program headers.
2464 if (dot_dynstr_sec == NULL)
2465 report_fatal_error("Dynamic string table is missing");
2466 Res = getString(dot_dynstr_sec, i->getVal());
2467 return object_error::success;
2470 template<class ELFT>
2471 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2472 Elf_Dyn_iterator e = end_dynamic_table();
2474 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2475 return library_iterator(LibraryRef(DRI, this));
2478 template<class ELFT>
2479 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2480 return ELFT::Is64Bits ? 8 : 4;
2483 template<class ELFT>
2484 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2485 switch(Header->e_ident[ELF::EI_CLASS]) {
2486 case ELF::ELFCLASS32:
2487 switch(Header->e_machine) {
2489 return "ELF32-i386";
2490 case ELF::EM_X86_64:
2491 return "ELF32-x86-64";
2494 case ELF::EM_HEXAGON:
2495 return "ELF32-hexagon";
2497 return "ELF32-mips";
2499 return "ELF32-unknown";
2501 case ELF::ELFCLASS64:
2502 switch(Header->e_machine) {
2504 return "ELF64-i386";
2505 case ELF::EM_X86_64:
2506 return "ELF64-x86-64";
2507 case ELF::EM_AARCH64:
2508 return "ELF64-aarch64";
2510 return "ELF64-ppc64";
2512 return "ELF64-unknown";
2515 // FIXME: Proper error handling.
2516 report_fatal_error("Invalid ELFCLASS!");
2520 template<class ELFT>
2521 unsigned ELFObjectFile<ELFT>::getArch() const {
2522 switch(Header->e_machine) {
2525 case ELF::EM_X86_64:
2526 return Triple::x86_64;
2527 case ELF::EM_AARCH64:
2528 return Triple::aarch64;
2531 case ELF::EM_HEXAGON:
2532 return Triple::hexagon;
2534 return (ELFT::TargetEndianness == support::little) ?
2535 Triple::mipsel : Triple::mips;
2537 return Triple::ppc64;
2539 return Triple::UnknownArch;
2543 template<class ELFT>
2544 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2545 assert(Header && "Header not initialized!");
2546 if (Header->e_shnum == ELF::SHN_UNDEF) {
2547 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2548 return SectionHeaderTable->sh_size;
2550 return Header->e_shnum;
2553 template<class ELFT>
2555 ELFObjectFile<ELFT>::getStringTableIndex() const {
2556 if (Header->e_shnum == ELF::SHN_UNDEF) {
2557 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2558 return SectionHeaderTable->sh_link;
2559 if (Header->e_shstrndx >= getNumSections())
2562 return Header->e_shstrndx;
2565 template<class ELFT>
2566 template<typename T>
2568 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2569 return getEntry<T>(getSection(Section), Entry);
2572 template<class ELFT>
2573 template<typename T>
2575 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2576 return reinterpret_cast<const T *>(
2578 + Section->sh_offset
2579 + (Entry * Section->sh_entsize));
2582 template<class ELFT>
2583 const typename ELFObjectFile<ELFT>::Elf_Sym *
2584 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2585 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2588 template<class ELFT>
2589 const typename ELFObjectFile<ELFT>::Elf_Rel *
2590 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2591 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2594 template<class ELFT>
2595 const typename ELFObjectFile<ELFT>::Elf_Rela *
2596 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2597 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2600 template<class ELFT>
2601 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2602 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2603 const Elf_Shdr *sec = getSection(Symb.d.b);
2604 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2605 // FIXME: Proper error handling.
2606 report_fatal_error("Invalid symbol table section!");
2610 template<class ELFT>
2611 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2612 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2615 if (!SectionHeaderTable || index >= getNumSections())
2616 // FIXME: Proper error handling.
2617 report_fatal_error("Invalid section index!");
2619 return reinterpret_cast<const Elf_Shdr *>(
2620 reinterpret_cast<const char *>(SectionHeaderTable)
2621 + (index * Header->e_shentsize));
2624 template<class ELFT>
2625 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2626 ELF::Elf32_Word offset) const {
2627 return getString(getSection(section), offset);
2630 template<class ELFT>
2631 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2632 ELF::Elf32_Word offset) const {
2633 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2634 if (offset >= section->sh_size)
2635 // FIXME: Proper error handling.
2636 report_fatal_error("Symbol name offset outside of string table!");
2637 return (const char *)base() + section->sh_offset + offset;
2640 template<class ELFT>
2641 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2642 const Elf_Sym *symb,
2643 StringRef &Result) const {
2644 if (symb->st_name == 0) {
2645 const Elf_Shdr *section = getSection(symb);
2649 Result = getString(dot_shstrtab_sec, section->sh_name);
2650 return object_error::success;
2653 if (section == SymbolTableSections[0]) {
2654 // Symbol is in .dynsym, use .dynstr string table
2655 Result = getString(dot_dynstr_sec, symb->st_name);
2657 // Use the default symbol table name section.
2658 Result = getString(dot_strtab_sec, symb->st_name);
2660 return object_error::success;
2663 template<class ELFT>
2664 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2665 StringRef &Result) const {
2666 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2667 return object_error::success;
2670 template<class ELFT>
2671 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2672 const Elf_Sym *symb,
2674 bool &IsDefault) const {
2675 // Handle non-dynamic symbols.
2676 if (section != SymbolTableSections[0]) {
2677 // Non-dynamic symbols can have versions in their names
2678 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2679 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2681 error_code ec = getSymbolName(section, symb, Name);
2682 if (ec != object_error::success)
2684 size_t atpos = Name.find('@');
2685 if (atpos == StringRef::npos) {
2688 return object_error::success;
2691 if (atpos < Name.size() && Name[atpos] == '@') {
2697 Version = Name.substr(atpos);
2698 return object_error::success;
2701 // This is a dynamic symbol. Look in the GNU symbol version table.
2702 if (dot_gnu_version_sec == NULL) {
2703 // No version table.
2706 return object_error::success;
2709 // Determine the position in the symbol table of this entry.
2710 const char *sec_start = (const char*)base() + section->sh_offset;
2711 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2713 // Get the corresponding version index entry
2714 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2715 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2717 // Special markers for unversioned symbols.
2718 if (version_index == ELF::VER_NDX_LOCAL ||
2719 version_index == ELF::VER_NDX_GLOBAL) {
2722 return object_error::success;
2725 // Lookup this symbol in the version table
2727 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2728 report_fatal_error("Symbol has version index without corresponding "
2729 "define or reference entry");
2730 const VersionMapEntry &entry = VersionMap[version_index];
2732 // Get the version name string
2734 if (entry.isVerdef()) {
2735 // The first Verdaux entry holds the name.
2736 name_offset = entry.getVerdef()->getAux()->vda_name;
2738 name_offset = entry.getVernaux()->vna_name;
2740 Version = getString(dot_dynstr_sec, name_offset);
2743 if (entry.isVerdef()) {
2744 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2749 return object_error::success;
2752 /// This is a generic interface for retrieving GNU symbol version
2753 /// information from an ELFObjectFile.
2754 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2755 const SymbolRef &Sym,
2758 // Little-endian 32-bit
2759 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2760 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2761 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2763 // Big-endian 32-bit
2764 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2765 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2766 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2768 // Little-endian 64-bit
2769 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2770 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2771 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2773 // Big-endian 64-bit
2774 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2775 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2776 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2778 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2781 /// This function returns the hash value for a symbol in the .dynsym section
2782 /// Name of the API remains consistent as specified in the libelf
2783 /// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
2784 static inline unsigned elf_hash(StringRef &symbolName) {
2786 for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
2787 h = (h << 4) + symbolName[i];
2788 g = h & 0xf0000000L;