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_Shdr *getSection(const Elf_Sym *symb) const;
794 const Elf_Shdr *getElfSection(section_iterator &It) const;
795 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
796 const Elf_Sym *getElfSymbol(uint32_t index) const;
798 // Methods for type inquiry through isa, cast, and dyn_cast
799 bool isDyldType() const { return isDyldELFObject; }
800 static inline bool classof(const Binary *v) {
801 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
806 // Iterate through the version definitions, and place each Elf_Verdef
807 // in the VersionMap according to its index.
809 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
810 unsigned vd_size = sec->sh_size; // Size of section in bytes
811 unsigned vd_count = sec->sh_info; // Number of Verdef entries
812 const char *sec_start = (const char*)base() + sec->sh_offset;
813 const char *sec_end = sec_start + vd_size;
814 // The first Verdef entry is at the start of the section.
815 const char *p = sec_start;
816 for (unsigned i = 0; i < vd_count; i++) {
817 if (p + sizeof(Elf_Verdef) > sec_end)
818 report_fatal_error("Section ended unexpectedly while scanning "
819 "version definitions.");
820 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
821 if (vd->vd_version != ELF::VER_DEF_CURRENT)
822 report_fatal_error("Unexpected verdef version");
823 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
824 if (index >= VersionMap.size())
825 VersionMap.resize(index+1);
826 VersionMap[index] = VersionMapEntry(vd);
831 // Iterate through the versions needed section, and place each Elf_Vernaux
832 // in the VersionMap according to its index.
834 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
835 unsigned vn_size = sec->sh_size; // Size of section in bytes
836 unsigned vn_count = sec->sh_info; // Number of Verneed entries
837 const char *sec_start = (const char*)base() + sec->sh_offset;
838 const char *sec_end = sec_start + vn_size;
839 // The first Verneed entry is at the start of the section.
840 const char *p = sec_start;
841 for (unsigned i = 0; i < vn_count; i++) {
842 if (p + sizeof(Elf_Verneed) > sec_end)
843 report_fatal_error("Section ended unexpectedly while scanning "
844 "version needed records.");
845 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
846 if (vn->vn_version != ELF::VER_NEED_CURRENT)
847 report_fatal_error("Unexpected verneed version");
848 // Iterate through the Vernaux entries
849 const char *paux = p + vn->vn_aux;
850 for (unsigned j = 0; j < vn->vn_cnt; j++) {
851 if (paux + sizeof(Elf_Vernaux) > sec_end)
852 report_fatal_error("Section ended unexpected while scanning auxiliary "
853 "version needed records.");
854 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
855 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
856 if (index >= VersionMap.size())
857 VersionMap.resize(index+1);
858 VersionMap[index] = VersionMapEntry(vna);
859 paux += vna->vna_next;
866 void ELFObjectFile<ELFT>::LoadVersionMap() const {
867 // If there is no dynamic symtab or version table, there is nothing to do.
868 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
871 // Has the VersionMap already been loaded?
872 if (VersionMap.size() > 0)
875 // The first two version indexes are reserved.
876 // Index 0 is LOCAL, index 1 is GLOBAL.
877 VersionMap.push_back(VersionMapEntry());
878 VersionMap.push_back(VersionMapEntry());
880 if (dot_gnu_version_d_sec)
881 LoadVersionDefs(dot_gnu_version_d_sec);
883 if (dot_gnu_version_r_sec)
884 LoadVersionNeeds(dot_gnu_version_r_sec);
888 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
890 const Elf_Sym *symb = getSymbol(Symb);
891 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
892 // FIXME: We really need to do proper error handling in the case of an invalid
893 // input file. Because we don't use exceptions, I think we'll just pass
894 // an error object around.
896 && SymbolTableSection
897 && symb >= (const Elf_Sym*)(base()
898 + SymbolTableSection->sh_offset)
899 && symb < (const Elf_Sym*)(base()
900 + SymbolTableSection->sh_offset
901 + SymbolTableSection->sh_size)))
902 // FIXME: Proper error handling.
903 report_fatal_error("Symb must point to a valid symbol!");
908 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
909 SymbolRef &Result) const {
910 validateSymbol(Symb);
911 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
914 // Check to see if we are at the end of this symbol table.
915 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
916 // We are at the end. If there are other symbol tables, jump to them.
917 // If the symbol table is .dynsym, we are iterating dynamic symbols,
918 // and there is only one table of these.
921 Symb.d.a = 1; // The 0th symbol in ELF is fake.
923 // Otherwise return the terminator.
924 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
925 Symb.d.a = std::numeric_limits<uint32_t>::max();
926 Symb.d.b = std::numeric_limits<uint32_t>::max();
930 Result = SymbolRef(Symb, this);
931 return object_error::success;
935 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
936 StringRef &Result) const {
937 validateSymbol(Symb);
938 const Elf_Sym *symb = getSymbol(Symb);
939 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
943 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
945 bool &IsDefault) const {
946 DataRefImpl Symb = SymRef.getRawDataRefImpl();
947 validateSymbol(Symb);
948 const Elf_Sym *symb = getSymbol(Symb);
949 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
954 ELF::Elf64_Word ELFObjectFile<ELFT>
955 ::getSymbolTableIndex(const Elf_Sym *symb) const {
956 if (symb->st_shndx == ELF::SHN_XINDEX)
957 return ExtendedSymbolTable.lookup(symb);
958 return symb->st_shndx;
962 const typename ELFObjectFile<ELFT>::Elf_Shdr *
963 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
964 if (symb->st_shndx == ELF::SHN_XINDEX)
965 return getSection(ExtendedSymbolTable.lookup(symb));
966 if (symb->st_shndx >= ELF::SHN_LORESERVE)
968 return getSection(symb->st_shndx);
972 const typename ELFObjectFile<ELFT>::Elf_Shdr *
973 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
974 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
975 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
979 const typename ELFObjectFile<ELFT>::Elf_Sym *
980 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
981 return getSymbol(It->getRawDataRefImpl());
985 const typename ELFObjectFile<ELFT>::Elf_Sym *
986 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
987 DataRefImpl SymbolData;
988 SymbolData.d.a = index;
990 return getSymbol(SymbolData);
994 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
995 uint64_t &Result) const {
996 validateSymbol(Symb);
997 const Elf_Sym *symb = getSymbol(Symb);
998 const Elf_Shdr *Section;
999 switch (getSymbolTableIndex(symb)) {
1000 case ELF::SHN_COMMON:
1001 // Unintialized symbols have no offset in the object file
1002 case ELF::SHN_UNDEF:
1003 Result = UnknownAddressOrSize;
1004 return object_error::success;
1006 Result = symb->st_value;
1007 return object_error::success;
1008 default: Section = getSection(symb);
1011 switch (symb->getType()) {
1012 case ELF::STT_SECTION:
1013 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1014 return object_error::success;
1016 case ELF::STT_OBJECT:
1017 case ELF::STT_NOTYPE:
1018 Result = symb->st_value +
1019 (Section ? Section->sh_offset : 0);
1020 return object_error::success;
1022 Result = UnknownAddressOrSize;
1023 return object_error::success;
1027 template<class ELFT>
1028 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1029 uint64_t &Result) const {
1030 validateSymbol(Symb);
1031 const Elf_Sym *symb = getSymbol(Symb);
1032 const Elf_Shdr *Section;
1033 switch (getSymbolTableIndex(symb)) {
1034 case ELF::SHN_COMMON:
1035 case ELF::SHN_UNDEF:
1036 Result = UnknownAddressOrSize;
1037 return object_error::success;
1039 Result = symb->st_value;
1040 return object_error::success;
1041 default: Section = getSection(symb);
1044 switch (symb->getType()) {
1045 case ELF::STT_SECTION:
1046 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1047 return object_error::success;
1049 case ELF::STT_OBJECT:
1050 case ELF::STT_NOTYPE:
1052 switch(Header->e_type) {
1055 IsRelocatable = false;
1058 IsRelocatable = true;
1060 Result = symb->st_value;
1062 // Clear the ARM/Thumb indicator flag.
1063 if (Header->e_machine == ELF::EM_ARM)
1066 if (IsRelocatable && Section != 0)
1067 Result += Section->sh_addr;
1068 return object_error::success;
1070 Result = UnknownAddressOrSize;
1071 return object_error::success;
1075 template<class ELFT>
1076 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1077 uint64_t &Result) const {
1078 validateSymbol(Symb);
1079 const Elf_Sym *symb = getSymbol(Symb);
1080 if (symb->st_size == 0)
1081 Result = UnknownAddressOrSize;
1082 Result = symb->st_size;
1083 return object_error::success;
1086 template<class ELFT>
1087 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1088 char &Result) const {
1089 validateSymbol(Symb);
1090 const Elf_Sym *symb = getSymbol(Symb);
1091 const Elf_Shdr *Section = getSection(symb);
1096 switch (Section->sh_type) {
1097 case ELF::SHT_PROGBITS:
1098 case ELF::SHT_DYNAMIC:
1099 switch (Section->sh_flags) {
1100 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1102 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1104 case ELF::SHF_ALLOC:
1105 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1106 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1110 case ELF::SHT_NOBITS: ret = 'b';
1114 switch (getSymbolTableIndex(symb)) {
1115 case ELF::SHN_UNDEF:
1119 case ELF::SHN_ABS: ret = 'a'; break;
1120 case ELF::SHN_COMMON: ret = 'c'; break;
1123 switch (symb->getBinding()) {
1124 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1126 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1129 if (symb->getType() == ELF::STT_OBJECT)
1135 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1137 if (error_code ec = getSymbolName(Symb, name))
1139 Result = StringSwitch<char>(name)
1140 .StartsWith(".debug", 'N')
1141 .StartsWith(".note", 'n')
1143 return object_error::success;
1147 return object_error::success;
1150 template<class ELFT>
1151 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1152 SymbolRef::Type &Result) const {
1153 validateSymbol(Symb);
1154 const Elf_Sym *symb = getSymbol(Symb);
1156 switch (symb->getType()) {
1157 case ELF::STT_NOTYPE:
1158 Result = SymbolRef::ST_Unknown;
1160 case ELF::STT_SECTION:
1161 Result = SymbolRef::ST_Debug;
1164 Result = SymbolRef::ST_File;
1167 Result = SymbolRef::ST_Function;
1169 case ELF::STT_OBJECT:
1170 case ELF::STT_COMMON:
1172 Result = SymbolRef::ST_Data;
1175 Result = SymbolRef::ST_Other;
1178 return object_error::success;
1181 template<class ELFT>
1182 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1183 uint32_t &Result) const {
1184 validateSymbol(Symb);
1185 const Elf_Sym *symb = getSymbol(Symb);
1187 Result = SymbolRef::SF_None;
1189 if (symb->getBinding() != ELF::STB_LOCAL)
1190 Result |= SymbolRef::SF_Global;
1192 if (symb->getBinding() == ELF::STB_WEAK)
1193 Result |= SymbolRef::SF_Weak;
1195 if (symb->st_shndx == ELF::SHN_ABS)
1196 Result |= SymbolRef::SF_Absolute;
1198 if (symb->getType() == ELF::STT_FILE ||
1199 symb->getType() == ELF::STT_SECTION)
1200 Result |= SymbolRef::SF_FormatSpecific;
1202 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1203 Result |= SymbolRef::SF_Undefined;
1205 if (symb->getType() == ELF::STT_COMMON ||
1206 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1207 Result |= SymbolRef::SF_Common;
1209 if (symb->getType() == ELF::STT_TLS)
1210 Result |= SymbolRef::SF_ThreadLocal;
1212 return object_error::success;
1215 template<class ELFT>
1216 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1217 section_iterator &Res) const {
1218 validateSymbol(Symb);
1219 const Elf_Sym *symb = getSymbol(Symb);
1220 const Elf_Shdr *sec = getSection(symb);
1222 Res = end_sections();
1225 Sec.p = reinterpret_cast<intptr_t>(sec);
1226 Res = section_iterator(SectionRef(Sec, this));
1228 return object_error::success;
1231 template<class ELFT>
1232 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1233 uint64_t &Val) const {
1234 validateSymbol(Symb);
1235 const Elf_Sym *symb = getSymbol(Symb);
1236 Val = symb->st_value;
1237 return object_error::success;
1240 template<class ELFT>
1241 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1242 SectionRef &Result) const {
1243 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1244 sec += Header->e_shentsize;
1245 Sec.p = reinterpret_cast<intptr_t>(sec);
1246 Result = SectionRef(Sec, this);
1247 return object_error::success;
1250 template<class ELFT>
1251 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1252 StringRef &Result) const {
1253 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1254 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1255 return object_error::success;
1258 template<class ELFT>
1259 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1260 uint64_t &Result) const {
1261 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1262 Result = sec->sh_addr;
1263 return object_error::success;
1266 template<class ELFT>
1267 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1268 uint64_t &Result) const {
1269 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1270 Result = sec->sh_size;
1271 return object_error::success;
1274 template<class ELFT>
1275 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1276 StringRef &Result) const {
1277 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1278 const char *start = (const char*)base() + sec->sh_offset;
1279 Result = StringRef(start, sec->sh_size);
1280 return object_error::success;
1283 template<class ELFT>
1284 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1285 StringRef &Result) const {
1286 const char *start = (const char*)base() + Sec->sh_offset;
1287 Result = StringRef(start, Sec->sh_size);
1288 return object_error::success;
1291 template<class ELFT>
1292 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1293 uint64_t &Result) const {
1294 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1295 Result = sec->sh_addralign;
1296 return object_error::success;
1299 template<class ELFT>
1300 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1301 bool &Result) const {
1302 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1303 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1307 return object_error::success;
1310 template<class ELFT>
1311 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1312 bool &Result) const {
1313 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1314 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1315 && sec->sh_type == ELF::SHT_PROGBITS)
1319 return object_error::success;
1322 template<class ELFT>
1323 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1324 bool &Result) const {
1325 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1326 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1327 && sec->sh_type == ELF::SHT_NOBITS)
1331 return object_error::success;
1334 template<class ELFT>
1335 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1336 DataRefImpl Sec, bool &Result) const {
1337 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1338 if (sec->sh_flags & ELF::SHF_ALLOC)
1342 return object_error::success;
1345 template<class ELFT>
1346 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1347 bool &Result) const {
1348 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1349 if (sec->sh_type == ELF::SHT_NOBITS)
1353 return object_error::success;
1356 template<class ELFT>
1357 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1358 bool &Result) const {
1359 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1360 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1361 // in the object image) and vice versa.
1362 Result = sec->sh_type == ELF::SHT_NOBITS;
1363 return object_error::success;
1366 template<class ELFT>
1367 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1368 bool &Result) const {
1369 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1370 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1374 return object_error::success;
1377 template<class ELFT>
1378 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1380 bool &Result) const {
1381 validateSymbol(Symb);
1383 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1384 const Elf_Sym *symb = getSymbol(Symb);
1386 unsigned shndx = symb->st_shndx;
1387 bool Reserved = shndx >= ELF::SHN_LORESERVE
1388 && shndx <= ELF::SHN_HIRESERVE;
1390 Result = !Reserved && (sec == getSection(symb->st_shndx));
1391 return object_error::success;
1394 template<class ELFT>
1396 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1397 DataRefImpl RelData;
1398 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1399 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1400 if (sec != 0 && ittr != SectionRelocMap.end()) {
1401 RelData.w.a = getSection(ittr->second[0])->sh_info;
1402 RelData.w.b = ittr->second[0];
1405 return relocation_iterator(RelocationRef(RelData, this));
1408 template<class ELFT>
1410 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1411 DataRefImpl RelData;
1412 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1413 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1414 if (sec != 0 && ittr != SectionRelocMap.end()) {
1415 // Get the index of the last relocation section for this section.
1416 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1417 const Elf_Shdr *relocsec = getSection(relocsecindex);
1418 RelData.w.a = relocsec->sh_info;
1419 RelData.w.b = relocsecindex;
1420 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1422 return relocation_iterator(RelocationRef(RelData, this));
1426 template<class ELFT>
1427 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1428 RelocationRef &Result) const {
1430 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1431 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1432 // We have reached the end of the relocations for this section. See if there
1433 // is another relocation section.
1434 typename RelocMap_t::mapped_type relocseclist =
1435 SectionRelocMap.lookup(getSection(Rel.w.a));
1437 // Do a binary search for the current reloc section index (which must be
1438 // present). Then get the next one.
1439 typename RelocMap_t::mapped_type::const_iterator loc =
1440 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1443 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1444 // to the end iterator.
1445 if (loc != relocseclist.end()) {
1450 Result = RelocationRef(Rel, this);
1451 return object_error::success;
1454 template<class ELFT>
1455 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1456 SymbolRef &Result) const {
1458 const Elf_Shdr *sec = getSection(Rel.w.b);
1459 switch (sec->sh_type) {
1461 report_fatal_error("Invalid section type in Rel!");
1462 case ELF::SHT_REL : {
1463 symbolIdx = getRel(Rel)->getSymbol();
1466 case ELF::SHT_RELA : {
1467 symbolIdx = getRela(Rel)->getSymbol();
1471 DataRefImpl SymbolData;
1472 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1473 if (it == SymbolTableSectionsIndexMap.end())
1474 report_fatal_error("Relocation symbol table not found!");
1475 SymbolData.d.a = symbolIdx;
1476 SymbolData.d.b = it->second;
1477 Result = SymbolRef(SymbolData, this);
1478 return object_error::success;
1481 template<class ELFT>
1482 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1483 uint64_t &Result) const {
1485 const Elf_Shdr *sec = getSection(Rel.w.b);
1486 switch (sec->sh_type) {
1488 report_fatal_error("Invalid section type in Rel!");
1489 case ELF::SHT_REL : {
1490 offset = getRel(Rel)->r_offset;
1493 case ELF::SHT_RELA : {
1494 offset = getRela(Rel)->r_offset;
1500 return object_error::success;
1503 template<class ELFT>
1504 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1505 uint64_t &Result) const {
1507 const Elf_Shdr *sec = getSection(Rel.w.b);
1508 switch (sec->sh_type) {
1510 report_fatal_error("Invalid section type in Rel!");
1511 case ELF::SHT_REL : {
1512 offset = getRel(Rel)->r_offset;
1515 case ELF::SHT_RELA : {
1516 offset = getRela(Rel)->r_offset;
1521 Result = offset - sec->sh_addr;
1522 return object_error::success;
1525 template<class ELFT>
1526 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1527 uint64_t &Result) const {
1528 const Elf_Shdr *sec = getSection(Rel.w.b);
1529 switch (sec->sh_type) {
1531 report_fatal_error("Invalid section type in Rel!");
1532 case ELF::SHT_REL : {
1533 Result = getRel(Rel)->getType();
1536 case ELF::SHT_RELA : {
1537 Result = getRela(Rel)->getType();
1541 return object_error::success;
1544 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1545 case ELF::enum: res = #enum; break;
1547 template<class ELFT>
1548 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1549 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1550 const Elf_Shdr *sec = getSection(Rel.w.b);
1553 switch (sec->sh_type) {
1555 return object_error::parse_failed;
1556 case ELF::SHT_REL : {
1557 type = getRel(Rel)->getType();
1560 case ELF::SHT_RELA : {
1561 type = getRela(Rel)->getType();
1565 switch (Header->e_machine) {
1566 case ELF::EM_X86_64:
1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1591 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1592 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1707 case ELF::EM_AARCH64:
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1924 case ELF::EM_HEXAGON:
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1947 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1948 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1949 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1950 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1951 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1952 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1953 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1954 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1955 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1956 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1985 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1986 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1987 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1988 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1989 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1990 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2019 Result.append(res.begin(), res.end());
2020 return object_error::success;
2023 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2025 template<class ELFT>
2026 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
2027 DataRefImpl Rel, int64_t &Result) const {
2028 const Elf_Shdr *sec = getSection(Rel.w.b);
2029 switch (sec->sh_type) {
2031 report_fatal_error("Invalid section type in Rel!");
2032 case ELF::SHT_REL : {
2034 return object_error::success;
2036 case ELF::SHT_RELA : {
2037 Result = getRela(Rel)->r_addend;
2038 return object_error::success;
2043 template<class ELFT>
2044 error_code ELFObjectFile<ELFT>::getRelocationValueString(
2045 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2046 const Elf_Shdr *sec = getSection(Rel.w.b);
2050 uint16_t symbol_index = 0;
2051 switch (sec->sh_type) {
2053 return object_error::parse_failed;
2054 case ELF::SHT_REL: {
2055 type = getRel(Rel)->getType();
2056 symbol_index = getRel(Rel)->getSymbol();
2057 // TODO: Read implicit addend from section data.
2060 case ELF::SHT_RELA: {
2061 type = getRela(Rel)->getType();
2062 symbol_index = getRela(Rel)->getSymbol();
2063 addend = getRela(Rel)->r_addend;
2067 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2069 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2071 switch (Header->e_machine) {
2072 case ELF::EM_X86_64:
2074 case ELF::R_X86_64_PC8:
2075 case ELF::R_X86_64_PC16:
2076 case ELF::R_X86_64_PC32: {
2078 raw_string_ostream fmt(fmtbuf);
2079 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2081 Result.append(fmtbuf.begin(), fmtbuf.end());
2084 case ELF::R_X86_64_8:
2085 case ELF::R_X86_64_16:
2086 case ELF::R_X86_64_32:
2087 case ELF::R_X86_64_32S:
2088 case ELF::R_X86_64_64: {
2090 raw_string_ostream fmt(fmtbuf);
2091 fmt << symname << (addend < 0 ? "" : "+") << addend;
2093 Result.append(fmtbuf.begin(), fmtbuf.end());
2100 case ELF::EM_AARCH64:
2102 case ELF::EM_HEXAGON:
2109 Result.append(res.begin(), res.end());
2110 return object_error::success;
2113 // Verify that the last byte in the string table in a null.
2114 template<class ELFT>
2115 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2116 const char *strtab = (const char*)base() + sh->sh_offset;
2117 if (strtab[sh->sh_size - 1] != 0)
2118 // FIXME: Proper error handling.
2119 report_fatal_error("String table must end with a null terminator!");
2122 template<class ELFT>
2123 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2124 : ObjectFile(getELFType(
2125 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2129 , isDyldELFObject(false)
2130 , SectionHeaderTable(0)
2131 , dot_shstrtab_sec(0)
2134 , dot_dynamic_sec(0)
2135 , dot_gnu_version_sec(0)
2136 , dot_gnu_version_r_sec(0)
2137 , dot_gnu_version_d_sec(0)
2141 const uint64_t FileSize = Data->getBufferSize();
2143 if (sizeof(Elf_Ehdr) > FileSize)
2144 // FIXME: Proper error handling.
2145 report_fatal_error("File too short!");
2147 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2149 if (Header->e_shoff == 0)
2152 const uint64_t SectionTableOffset = Header->e_shoff;
2154 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2155 // FIXME: Proper error handling.
2156 report_fatal_error("Section header table goes past end of file!");
2158 // The getNumSections() call below depends on SectionHeaderTable being set.
2159 SectionHeaderTable =
2160 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2161 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2163 if (SectionTableOffset + SectionTableSize > FileSize)
2164 // FIXME: Proper error handling.
2165 report_fatal_error("Section table goes past end of file!");
2167 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2168 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2169 const Elf_Shdr* sh = SectionHeaderTable;
2171 // Reserve SymbolTableSections[0] for .dynsym
2172 SymbolTableSections.push_back(NULL);
2174 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2175 switch (sh->sh_type) {
2176 case ELF::SHT_SYMTAB_SHNDX: {
2177 if (SymbolTableSectionHeaderIndex)
2178 // FIXME: Proper error handling.
2179 report_fatal_error("More than one .symtab_shndx!");
2180 SymbolTableSectionHeaderIndex = sh;
2183 case ELF::SHT_SYMTAB: {
2184 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2185 SymbolTableSections.push_back(sh);
2188 case ELF::SHT_DYNSYM: {
2189 if (SymbolTableSections[0] != NULL)
2190 // FIXME: Proper error handling.
2191 report_fatal_error("More than one .dynsym!");
2192 SymbolTableSectionsIndexMap[i] = 0;
2193 SymbolTableSections[0] = sh;
2197 case ELF::SHT_RELA: {
2198 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2201 case ELF::SHT_DYNAMIC: {
2202 if (dot_dynamic_sec != NULL)
2203 // FIXME: Proper error handling.
2204 report_fatal_error("More than one .dynamic!");
2205 dot_dynamic_sec = sh;
2208 case ELF::SHT_GNU_versym: {
2209 if (dot_gnu_version_sec != NULL)
2210 // FIXME: Proper error handling.
2211 report_fatal_error("More than one .gnu.version section!");
2212 dot_gnu_version_sec = sh;
2215 case ELF::SHT_GNU_verdef: {
2216 if (dot_gnu_version_d_sec != NULL)
2217 // FIXME: Proper error handling.
2218 report_fatal_error("More than one .gnu.version_d section!");
2219 dot_gnu_version_d_sec = sh;
2222 case ELF::SHT_GNU_verneed: {
2223 if (dot_gnu_version_r_sec != NULL)
2224 // FIXME: Proper error handling.
2225 report_fatal_error("More than one .gnu.version_r section!");
2226 dot_gnu_version_r_sec = sh;
2233 // Sort section relocation lists by index.
2234 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2235 e = SectionRelocMap.end(); i != e; ++i) {
2236 std::sort(i->second.begin(), i->second.end());
2239 // Get string table sections.
2240 dot_shstrtab_sec = getSection(getStringTableIndex());
2241 if (dot_shstrtab_sec) {
2242 // Verify that the last byte in the string table in a null.
2243 VerifyStrTab(dot_shstrtab_sec);
2246 // Merge this into the above loop.
2247 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2248 *e = i + getNumSections() * Header->e_shentsize;
2249 i != e; i += Header->e_shentsize) {
2250 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2251 if (sh->sh_type == ELF::SHT_STRTAB) {
2252 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2253 if (SectionName == ".strtab") {
2254 if (dot_strtab_sec != 0)
2255 // FIXME: Proper error handling.
2256 report_fatal_error("Already found section named .strtab!");
2257 dot_strtab_sec = sh;
2258 VerifyStrTab(dot_strtab_sec);
2259 } else if (SectionName == ".dynstr") {
2260 if (dot_dynstr_sec != 0)
2261 // FIXME: Proper error handling.
2262 report_fatal_error("Already found section named .dynstr!");
2263 dot_dynstr_sec = sh;
2264 VerifyStrTab(dot_dynstr_sec);
2269 // Build symbol name side-mapping if there is one.
2270 if (SymbolTableSectionHeaderIndex) {
2271 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2272 SymbolTableSectionHeaderIndex->sh_offset);
2274 for (symbol_iterator si = begin_symbols(),
2275 se = end_symbols(); si != se; si.increment(ec)) {
2277 report_fatal_error("Fewer extended symbol table entries than symbols!");
2278 if (*ShndxTable != ELF::SHN_UNDEF)
2279 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2285 // Get the symbol table index in the symtab section given a symbol
2286 template<class ELFT>
2287 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2288 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2289 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2290 uintptr_t SymLoc = uintptr_t(Sym);
2291 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2292 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2293 uint64_t SymOffset = SymLoc - SymTabLoc;
2294 assert(SymOffset % SymTab->sh_entsize == 0 &&
2295 "Symbol not multiple of symbol size!");
2296 return SymOffset / SymTab->sh_entsize;
2299 template<class ELFT>
2300 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2301 DataRefImpl SymbolData;
2302 if (SymbolTableSections.size() <= 1) {
2303 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2304 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2306 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2307 SymbolData.d.b = 1; // The 0th table is .dynsym
2309 return symbol_iterator(SymbolRef(SymbolData, this));
2312 template<class ELFT>
2313 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2314 DataRefImpl SymbolData;
2315 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2316 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2317 return symbol_iterator(SymbolRef(SymbolData, this));
2320 template<class ELFT>
2321 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2322 DataRefImpl SymbolData;
2323 if (SymbolTableSections[0] == NULL) {
2324 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2325 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2327 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2328 SymbolData.d.b = 0; // The 0th table is .dynsym
2330 return symbol_iterator(SymbolRef(SymbolData, this));
2333 template<class ELFT>
2334 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2335 DataRefImpl SymbolData;
2336 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2337 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2338 return symbol_iterator(SymbolRef(SymbolData, this));
2341 template<class ELFT>
2342 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2344 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2345 return section_iterator(SectionRef(ret, this));
2348 template<class ELFT>
2349 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2351 ret.p = reinterpret_cast<intptr_t>(base()
2353 + (Header->e_shentsize*getNumSections()));
2354 return section_iterator(SectionRef(ret, this));
2357 template<class ELFT>
2358 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2359 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2360 if (dot_dynamic_sec)
2361 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2362 (const char *)base() + dot_dynamic_sec->sh_offset);
2363 return Elf_Dyn_iterator(0, 0);
2366 template<class ELFT>
2367 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2368 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2369 if (dot_dynamic_sec) {
2370 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2371 (const char *)base() + dot_dynamic_sec->sh_offset +
2372 dot_dynamic_sec->sh_size);
2375 Elf_Dyn_iterator Start = begin_dynamic_table();
2376 while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2379 // Include the DT_NULL.
2386 return Elf_Dyn_iterator(0, 0);
2389 template<class ELFT>
2390 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2392 // Find the DT_SONAME entry
2393 Elf_Dyn_iterator it = begin_dynamic_table();
2394 Elf_Dyn_iterator ie = end_dynamic_table();
2395 while (it != ie && it->getTag() != ELF::DT_SONAME)
2399 if (dot_dynstr_sec == NULL)
2400 report_fatal_error("Dynamic string table is missing");
2401 dt_soname = getString(dot_dynstr_sec, it->getVal());
2409 template<class ELFT>
2410 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2411 // Find the first DT_NEEDED entry
2412 Elf_Dyn_iterator i = begin_dynamic_table();
2413 Elf_Dyn_iterator e = end_dynamic_table();
2414 while (i != e && i->getTag() != ELF::DT_NEEDED)
2418 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2419 return library_iterator(LibraryRef(DRI, this));
2422 template<class ELFT>
2423 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2424 LibraryRef &Result) const {
2425 // Use the same DataRefImpl format as DynRef.
2426 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2427 reinterpret_cast<const char *>(Data.p));
2428 Elf_Dyn_iterator e = end_dynamic_table();
2430 // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2433 while (i != e && i->getTag() != ELF::DT_NEEDED);
2436 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2437 Result = LibraryRef(DRI, this);
2438 return object_error::success;
2441 template<class ELFT>
2442 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2443 StringRef &Res) const {
2444 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2445 reinterpret_cast<const char *>(Data.p));
2446 if (i == end_dynamic_table())
2447 report_fatal_error("getLibraryPath() called on iterator end");
2449 if (i->getTag() != ELF::DT_NEEDED)
2450 report_fatal_error("Invalid library_iterator");
2452 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2453 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2454 // the time, but the specification allows exceptions.
2455 // TODO: This should really use DT_STRTAB instead. Doing this requires
2456 // reading the program headers.
2457 if (dot_dynstr_sec == NULL)
2458 report_fatal_error("Dynamic string table is missing");
2459 Res = getString(dot_dynstr_sec, i->getVal());
2460 return object_error::success;
2463 template<class ELFT>
2464 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2465 Elf_Dyn_iterator e = end_dynamic_table();
2467 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2468 return library_iterator(LibraryRef(DRI, this));
2471 template<class ELFT>
2472 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2473 return ELFT::Is64Bits ? 8 : 4;
2476 template<class ELFT>
2477 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2478 switch(Header->e_ident[ELF::EI_CLASS]) {
2479 case ELF::ELFCLASS32:
2480 switch(Header->e_machine) {
2482 return "ELF32-i386";
2483 case ELF::EM_X86_64:
2484 return "ELF32-x86-64";
2487 case ELF::EM_HEXAGON:
2488 return "ELF32-hexagon";
2490 return "ELF32-mips";
2492 return "ELF32-unknown";
2494 case ELF::ELFCLASS64:
2495 switch(Header->e_machine) {
2497 return "ELF64-i386";
2498 case ELF::EM_X86_64:
2499 return "ELF64-x86-64";
2500 case ELF::EM_AARCH64:
2501 return "ELF64-aarch64";
2503 return "ELF64-ppc64";
2505 return "ELF64-unknown";
2508 // FIXME: Proper error handling.
2509 report_fatal_error("Invalid ELFCLASS!");
2513 template<class ELFT>
2514 unsigned ELFObjectFile<ELFT>::getArch() const {
2515 switch(Header->e_machine) {
2518 case ELF::EM_X86_64:
2519 return Triple::x86_64;
2520 case ELF::EM_AARCH64:
2521 return Triple::aarch64;
2524 case ELF::EM_HEXAGON:
2525 return Triple::hexagon;
2527 return (ELFT::TargetEndianness == support::little) ?
2528 Triple::mipsel : Triple::mips;
2530 return Triple::ppc64;
2532 return Triple::UnknownArch;
2536 template<class ELFT>
2537 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2538 assert(Header && "Header not initialized!");
2539 if (Header->e_shnum == ELF::SHN_UNDEF) {
2540 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2541 return SectionHeaderTable->sh_size;
2543 return Header->e_shnum;
2546 template<class ELFT>
2548 ELFObjectFile<ELFT>::getStringTableIndex() const {
2549 if (Header->e_shnum == ELF::SHN_UNDEF) {
2550 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2551 return SectionHeaderTable->sh_link;
2552 if (Header->e_shstrndx >= getNumSections())
2555 return Header->e_shstrndx;
2558 template<class ELFT>
2559 template<typename T>
2561 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2562 return getEntry<T>(getSection(Section), Entry);
2565 template<class ELFT>
2566 template<typename T>
2568 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2569 return reinterpret_cast<const T *>(
2571 + Section->sh_offset
2572 + (Entry * Section->sh_entsize));
2575 template<class ELFT>
2576 const typename ELFObjectFile<ELFT>::Elf_Sym *
2577 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2578 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2581 template<class ELFT>
2582 const typename ELFObjectFile<ELFT>::Elf_Rel *
2583 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2584 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2587 template<class ELFT>
2588 const typename ELFObjectFile<ELFT>::Elf_Rela *
2589 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2590 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2593 template<class ELFT>
2594 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2595 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2596 const Elf_Shdr *sec = getSection(Symb.d.b);
2597 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2598 // FIXME: Proper error handling.
2599 report_fatal_error("Invalid symbol table section!");
2603 template<class ELFT>
2604 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2605 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2608 if (!SectionHeaderTable || index >= getNumSections())
2609 // FIXME: Proper error handling.
2610 report_fatal_error("Invalid section index!");
2612 return reinterpret_cast<const Elf_Shdr *>(
2613 reinterpret_cast<const char *>(SectionHeaderTable)
2614 + (index * Header->e_shentsize));
2617 template<class ELFT>
2618 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2619 ELF::Elf32_Word offset) const {
2620 return getString(getSection(section), offset);
2623 template<class ELFT>
2624 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2625 ELF::Elf32_Word offset) const {
2626 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2627 if (offset >= section->sh_size)
2628 // FIXME: Proper error handling.
2629 report_fatal_error("Symbol name offset outside of string table!");
2630 return (const char *)base() + section->sh_offset + offset;
2633 template<class ELFT>
2634 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2635 const Elf_Sym *symb,
2636 StringRef &Result) const {
2637 if (symb->st_name == 0) {
2638 const Elf_Shdr *section = getSection(symb);
2642 Result = getString(dot_shstrtab_sec, section->sh_name);
2643 return object_error::success;
2646 if (section == SymbolTableSections[0]) {
2647 // Symbol is in .dynsym, use .dynstr string table
2648 Result = getString(dot_dynstr_sec, symb->st_name);
2650 // Use the default symbol table name section.
2651 Result = getString(dot_strtab_sec, symb->st_name);
2653 return object_error::success;
2656 template<class ELFT>
2657 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2658 StringRef &Result) const {
2659 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2660 return object_error::success;
2663 template<class ELFT>
2664 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2665 const Elf_Sym *symb,
2667 bool &IsDefault) const {
2668 // Handle non-dynamic symbols.
2669 if (section != SymbolTableSections[0]) {
2670 // Non-dynamic symbols can have versions in their names
2671 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2672 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2674 error_code ec = getSymbolName(section, symb, Name);
2675 if (ec != object_error::success)
2677 size_t atpos = Name.find('@');
2678 if (atpos == StringRef::npos) {
2681 return object_error::success;
2684 if (atpos < Name.size() && Name[atpos] == '@') {
2690 Version = Name.substr(atpos);
2691 return object_error::success;
2694 // This is a dynamic symbol. Look in the GNU symbol version table.
2695 if (dot_gnu_version_sec == NULL) {
2696 // No version table.
2699 return object_error::success;
2702 // Determine the position in the symbol table of this entry.
2703 const char *sec_start = (const char*)base() + section->sh_offset;
2704 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2706 // Get the corresponding version index entry
2707 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2708 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2710 // Special markers for unversioned symbols.
2711 if (version_index == ELF::VER_NDX_LOCAL ||
2712 version_index == ELF::VER_NDX_GLOBAL) {
2715 return object_error::success;
2718 // Lookup this symbol in the version table
2720 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2721 report_fatal_error("Symbol has version index without corresponding "
2722 "define or reference entry");
2723 const VersionMapEntry &entry = VersionMap[version_index];
2725 // Get the version name string
2727 if (entry.isVerdef()) {
2728 // The first Verdaux entry holds the name.
2729 name_offset = entry.getVerdef()->getAux()->vda_name;
2731 name_offset = entry.getVernaux()->vna_name;
2733 Version = getString(dot_dynstr_sec, name_offset);
2736 if (entry.isVerdef()) {
2737 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2742 return object_error::success;
2745 /// This is a generic interface for retrieving GNU symbol version
2746 /// information from an ELFObjectFile.
2747 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2748 const SymbolRef &Sym,
2751 // Little-endian 32-bit
2752 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2753 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2754 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2756 // Big-endian 32-bit
2757 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2758 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2759 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2761 // Little-endian 64-bit
2762 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2763 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2764 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2766 // Big-endian 64-bit
2767 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2768 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2769 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2771 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2774 /// This function returns the hash value for a symbol in the .dynsym section
2775 /// Name of the API remains consistent as specified in the libelf
2776 /// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
2777 static inline unsigned elf_hash(StringRef &symbolName) {
2779 for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
2780 h = (h << 4) + symbolName[i];
2781 g = h & 0xf0000000L;