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
334 uint32_t getRInfo(bool isMips64EL) const {
338 void setRInfo(uint32_t R) {
343 template<template<endianness, std::size_t, bool> class ELFT,
344 endianness TargetEndianness, std::size_t MaxAlign>
345 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, false> {
346 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
347 MaxAlign LLVM_ELF_COMMA true>)
348 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
349 Elf_Xword r_info; // Symbol table index and type of relocation to apply
351 uint64_t getRInfo(bool isMips64EL) const {
355 // Mip64 little endian has a "special" encoding of r_info. Instead of one
356 // 64 bit little endian number, it is a little ending 32 bit number followed
357 // by a 32 bit big endian number.
358 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
359 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
362 void setRInfo(uint64_t R) {
363 // FIXME: Add mips64el support.
368 template<template<endianness, std::size_t, bool> class ELFT,
369 endianness TargetEndianness, std::size_t MaxAlign>
370 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, true> {
371 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
372 MaxAlign LLVM_ELF_COMMA false>)
373 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
374 Elf_Word r_info; // Symbol table index and type of relocation to apply
375 Elf_Sword r_addend; // Compute value for relocatable field by adding this
377 uint32_t getRInfo(bool isMips64EL) const {
381 void setRInfo(uint32_t R) {
386 template<template<endianness, std::size_t, bool> class ELFT,
387 endianness TargetEndianness, std::size_t MaxAlign>
388 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, true> {
389 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
390 MaxAlign LLVM_ELF_COMMA true>)
391 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
392 Elf_Xword r_info; // Symbol table index and type of relocation to apply
393 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
395 uint64_t getRInfo(bool isMips64EL) const {
396 // Mip64 little endian has a "special" encoding of r_info. Instead of one
397 // 64 bit little endian number, it is a little ending 32 bit number followed
398 // by a 32 bit big endian number.
402 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
403 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
405 void setRInfo(uint64_t R) {
406 // FIXME: Add mips64el support.
411 template<class ELFT, bool isRela>
414 template<template<endianness, std::size_t, bool> class ELFT,
415 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
416 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, true>, isRela>
417 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela> {
418 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
419 MaxAlign LLVM_ELF_COMMA true>)
421 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
422 // and ELF64_R_INFO macros defined in the ELF specification:
423 uint32_t getSymbol(bool isMips64EL) const {
424 return (uint32_t) (this->getRInfo(isMips64EL) >> 32);
426 uint32_t getType(bool isMips64EL) const {
427 return (uint32_t) (this->getRInfo(isMips64EL) & 0xffffffffL);
429 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
430 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
431 void setSymbolAndType(uint32_t s, uint32_t t) {
432 this->setRInfo(((uint64_t)s << 32) + (t&0xffffffffL));
436 template<template<endianness, std::size_t, bool> class ELFT,
437 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
438 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, false>, isRela>
439 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela> {
440 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
441 MaxAlign LLVM_ELF_COMMA false>)
443 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
444 // and ELF32_R_INFO macros defined in the ELF specification:
445 uint32_t getSymbol(bool isMips64EL) const {
446 return this->getRInfo(isMips64EL) >> 8;
448 unsigned char getType(bool isMips64EL) const {
449 return (unsigned char) (this->getRInfo(isMips64EL) & 0x0ff);
451 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
452 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
453 void setSymbolAndType(uint32_t s, unsigned char t) {
454 this->setRInfo((s << 8) + t);
459 struct Elf_Ehdr_Impl {
460 LLVM_ELF_IMPORT_TYPES(ELFT)
461 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
462 Elf_Half e_type; // Type of file (see ET_*)
463 Elf_Half e_machine; // Required architecture for this file (see EM_*)
464 Elf_Word e_version; // Must be equal to 1
465 Elf_Addr e_entry; // Address to jump to in order to start program
466 Elf_Off e_phoff; // Program header table's file offset, in bytes
467 Elf_Off e_shoff; // Section header table's file offset, in bytes
468 Elf_Word e_flags; // Processor-specific flags
469 Elf_Half e_ehsize; // Size of ELF header, in bytes
470 Elf_Half e_phentsize;// Size of an entry in the program header table
471 Elf_Half e_phnum; // Number of entries in the program header table
472 Elf_Half e_shentsize;// Size of an entry in the section header table
473 Elf_Half e_shnum; // Number of entries in the section header table
474 Elf_Half e_shstrndx; // Section header table index of section name
476 bool checkMagic() const {
477 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
479 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
480 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
484 struct Elf_Phdr_Impl;
486 template<template<endianness, std::size_t, bool> class ELFT,
487 endianness TargetEndianness, std::size_t MaxAlign>
488 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, false> > {
489 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
490 MaxAlign LLVM_ELF_COMMA false>)
491 Elf_Word p_type; // Type of segment
492 Elf_Off p_offset; // FileOffset where segment is located, in bytes
493 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
494 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
495 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
496 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
497 Elf_Word p_flags; // Segment flags
498 Elf_Word p_align; // Segment alignment constraint
501 template<template<endianness, std::size_t, bool> class ELFT,
502 endianness TargetEndianness, std::size_t MaxAlign>
503 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, true> > {
504 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
505 MaxAlign LLVM_ELF_COMMA true>)
506 Elf_Word p_type; // Type of segment
507 Elf_Word p_flags; // Segment flags
508 Elf_Off p_offset; // FileOffset where segment is located, in bytes
509 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
510 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
511 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
512 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
513 Elf_Xword p_align; // Segment alignment constraint
517 class ELFObjectFile : public ObjectFile {
518 LLVM_ELF_IMPORT_TYPES(ELFT)
521 /// \brief Iterate over constant sized entities.
523 class ELFEntityIterator {
525 typedef ptrdiff_t difference_type;
526 typedef EntT value_type;
527 typedef std::random_access_iterator_tag iterator_category;
528 typedef value_type &reference;
529 typedef value_type *pointer;
531 /// \brief Default construct iterator.
532 ELFEntityIterator() : EntitySize(0), Current(0) {}
533 ELFEntityIterator(uint64_t EntSize, const char *Start)
534 : EntitySize(EntSize)
537 reference operator *() {
538 assert(Current && "Attempted to dereference an invalid iterator!");
539 return *reinterpret_cast<pointer>(Current);
542 pointer operator ->() {
543 assert(Current && "Attempted to dereference an invalid iterator!");
544 return reinterpret_cast<pointer>(Current);
547 bool operator ==(const ELFEntityIterator &Other) {
548 return Current == Other.Current;
551 bool operator !=(const ELFEntityIterator &Other) {
552 return !(*this == Other);
555 ELFEntityIterator &operator ++() {
556 assert(Current && "Attempted to increment an invalid iterator!");
557 Current += EntitySize;
561 ELFEntityIterator operator ++(int) {
562 ELFEntityIterator Tmp = *this;
567 ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
568 EntitySize = Other.EntitySize;
569 Current = Other.Current;
573 difference_type operator -(const ELFEntityIterator &Other) const {
574 assert(EntitySize == Other.EntitySize &&
575 "Subtracting iterators of different EntitiySize!");
576 return (Current - Other.Current) / EntitySize;
579 const char *get() const { return Current; }
586 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
587 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
588 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
589 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
590 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
591 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
592 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
593 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
594 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
595 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
596 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
597 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
598 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
599 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
600 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
601 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
604 // This flag is used for classof, to distinguish ELFObjectFile from
605 // its subclass. If more subclasses will be created, this flag will
606 // have to become an enum.
607 bool isDyldELFObject;
610 typedef SmallVector<const Elf_Shdr *, 2> Sections_t;
611 typedef DenseMap<unsigned, unsigned> IndexMap_t;
612 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
614 const Elf_Ehdr *Header;
615 const Elf_Shdr *SectionHeaderTable;
616 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
617 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
618 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
620 // SymbolTableSections[0] always points to the dynamic string table section
621 // header, or NULL if there is no dynamic string table.
622 Sections_t SymbolTableSections;
623 IndexMap_t SymbolTableSectionsIndexMap;
624 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
626 const Elf_Shdr *dot_dynamic_sec; // .dynamic
627 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
628 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
629 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
631 // Pointer to SONAME entry in dynamic string table
632 // This is set the first time getLoadName is called.
633 mutable const char *dt_soname;
636 // Records for each version index the corresponding Verdef or Vernaux entry.
637 // This is filled the first time LoadVersionMap() is called.
638 class VersionMapEntry : public PointerIntPair<const void*, 1> {
640 // If the integer is 0, this is an Elf_Verdef*.
641 // If the integer is 1, this is an Elf_Vernaux*.
642 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
643 VersionMapEntry(const Elf_Verdef *verdef)
644 : PointerIntPair<const void*, 1>(verdef, 0) { }
645 VersionMapEntry(const Elf_Vernaux *vernaux)
646 : PointerIntPair<const void*, 1>(vernaux, 1) { }
647 bool isNull() const { return getPointer() == NULL; }
648 bool isVerdef() const { return !isNull() && getInt() == 0; }
649 bool isVernaux() const { return !isNull() && getInt() == 1; }
650 const Elf_Verdef *getVerdef() const {
651 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
653 const Elf_Vernaux *getVernaux() const {
654 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
657 mutable SmallVector<VersionMapEntry, 16> VersionMap;
658 void LoadVersionDefs(const Elf_Shdr *sec) const;
659 void LoadVersionNeeds(const Elf_Shdr *ec) const;
660 void LoadVersionMap() const;
662 /// @brief Map sections to an array of relocation sections that reference
663 /// them sorted by section index.
664 RelocMap_t SectionRelocMap;
666 /// @brief Get the relocation section that contains \a Rel.
667 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
668 return getSection(Rel.w.b);
672 bool isRelocationHasAddend(DataRefImpl Rel) const;
674 const T *getEntry(uint16_t Section, uint32_t Entry) const;
676 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
677 const Elf_Shdr *getSection(DataRefImpl index) const;
678 const Elf_Shdr *getSection(uint32_t index) const;
679 const Elf_Rel *getRel(DataRefImpl Rel) const;
680 const Elf_Rela *getRela(DataRefImpl Rela) const;
681 const char *getString(uint32_t section, uint32_t offset) const;
682 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
683 error_code getSymbolVersion(const Elf_Shdr *section,
686 bool &IsDefault) const;
687 void VerifyStrTab(const Elf_Shdr *sh) const;
690 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
691 void validateSymbol(DataRefImpl Symb) const;
694 error_code getSymbolName(const Elf_Shdr *section,
696 StringRef &Res) const;
697 error_code getSectionName(const Elf_Shdr *section,
698 StringRef &Res) const;
699 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
700 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
701 bool &IsDefault) const;
702 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
704 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
705 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
706 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
707 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
708 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
709 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
710 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
711 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
712 virtual error_code getSymbolSection(DataRefImpl Symb,
713 section_iterator &Res) const;
714 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
716 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
717 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
719 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
720 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
721 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
722 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
723 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
724 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
725 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
726 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
727 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
728 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
730 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
731 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
732 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
733 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
735 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
736 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
738 virtual error_code getRelocationNext(DataRefImpl Rel,
739 RelocationRef &Res) const;
740 virtual error_code getRelocationAddress(DataRefImpl Rel,
741 uint64_t &Res) const;
742 virtual error_code getRelocationOffset(DataRefImpl Rel,
743 uint64_t &Res) const;
744 virtual error_code getRelocationSymbol(DataRefImpl Rel,
745 SymbolRef &Res) const;
746 virtual error_code getRelocationType(DataRefImpl Rel,
747 uint64_t &Res) const;
748 virtual error_code getRelocationTypeName(DataRefImpl Rel,
749 SmallVectorImpl<char> &Result) const;
750 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
752 virtual error_code getRelocationValueString(DataRefImpl Rel,
753 SmallVectorImpl<char> &Result) const;
756 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
758 bool isMips64EL() const {
759 return Header->e_machine == ELF::EM_MIPS &&
760 Header->getFileClass() == ELF::ELFCLASS64 &&
761 Header->getDataEncoding() == ELF::ELFDATA2LSB;
764 virtual symbol_iterator begin_symbols() const;
765 virtual symbol_iterator end_symbols() const;
767 virtual symbol_iterator begin_dynamic_symbols() const;
768 virtual symbol_iterator end_dynamic_symbols() const;
770 virtual section_iterator begin_sections() const;
771 virtual section_iterator end_sections() const;
773 virtual library_iterator begin_libraries_needed() const;
774 virtual library_iterator end_libraries_needed() const;
776 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
777 return SymbolTableSections[0];
780 const Elf_Shdr *getDynamicStringTableSectionHeader() const {
781 return dot_dynstr_sec;
784 Elf_Dyn_iterator begin_dynamic_table() const;
785 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
786 /// the section size.
787 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
789 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
790 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
792 return Elf_Sym_iterator(DynSymtab->sh_entsize,
793 (const char *)base() + DynSymtab->sh_offset);
794 return Elf_Sym_iterator(0, 0);
797 Elf_Sym_iterator end_elf_dynamic_symbols() const {
798 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
800 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
801 DynSymtab->sh_offset + DynSymtab->sh_size);
802 return Elf_Sym_iterator(0, 0);
805 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
806 return Elf_Rela_Iter(sec->sh_entsize,
807 (const char *)(base() + sec->sh_offset));
810 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
811 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
812 (base() + sec->sh_offset + sec->sh_size));
815 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
816 return Elf_Rel_Iter(sec->sh_entsize,
817 (const char *)(base() + sec->sh_offset));
820 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
821 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
822 (base() + sec->sh_offset + sec->sh_size));
825 /// \brief Iterate over program header table.
826 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
828 Elf_Phdr_Iter begin_program_headers() const {
829 return Elf_Phdr_Iter(Header->e_phentsize,
830 (const char*)base() + Header->e_phoff);
833 Elf_Phdr_Iter end_program_headers() const {
834 return Elf_Phdr_Iter(Header->e_phentsize,
835 (const char*)base() +
837 (Header->e_phnum * Header->e_phentsize));
840 virtual uint8_t getBytesInAddress() const;
841 virtual StringRef getFileFormatName() const;
842 virtual StringRef getObjectType() const { return "ELF"; }
843 virtual unsigned getArch() const;
844 virtual StringRef getLoadName() const;
845 virtual error_code getSectionContents(const Elf_Shdr *sec,
846 StringRef &Res) const;
848 uint64_t getNumSections() const;
849 uint64_t getStringTableIndex() const;
850 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
851 const Elf_Ehdr *getElfHeader() const;
852 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
853 const Elf_Shdr *getElfSection(section_iterator &It) const;
854 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
855 const Elf_Sym *getElfSymbol(uint32_t index) const;
857 // Methods for type inquiry through isa, cast, and dyn_cast
858 bool isDyldType() const { return isDyldELFObject; }
859 static inline bool classof(const Binary *v) {
860 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
865 // Iterate through the version definitions, and place each Elf_Verdef
866 // in the VersionMap according to its index.
868 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
869 unsigned vd_size = sec->sh_size; // Size of section in bytes
870 unsigned vd_count = sec->sh_info; // Number of Verdef entries
871 const char *sec_start = (const char*)base() + sec->sh_offset;
872 const char *sec_end = sec_start + vd_size;
873 // The first Verdef entry is at the start of the section.
874 const char *p = sec_start;
875 for (unsigned i = 0; i < vd_count; i++) {
876 if (p + sizeof(Elf_Verdef) > sec_end)
877 report_fatal_error("Section ended unexpectedly while scanning "
878 "version definitions.");
879 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
880 if (vd->vd_version != ELF::VER_DEF_CURRENT)
881 report_fatal_error("Unexpected verdef version");
882 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
883 if (index >= VersionMap.size())
884 VersionMap.resize(index+1);
885 VersionMap[index] = VersionMapEntry(vd);
890 // Iterate through the versions needed section, and place each Elf_Vernaux
891 // in the VersionMap according to its index.
893 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
894 unsigned vn_size = sec->sh_size; // Size of section in bytes
895 unsigned vn_count = sec->sh_info; // Number of Verneed entries
896 const char *sec_start = (const char*)base() + sec->sh_offset;
897 const char *sec_end = sec_start + vn_size;
898 // The first Verneed entry is at the start of the section.
899 const char *p = sec_start;
900 for (unsigned i = 0; i < vn_count; i++) {
901 if (p + sizeof(Elf_Verneed) > sec_end)
902 report_fatal_error("Section ended unexpectedly while scanning "
903 "version needed records.");
904 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
905 if (vn->vn_version != ELF::VER_NEED_CURRENT)
906 report_fatal_error("Unexpected verneed version");
907 // Iterate through the Vernaux entries
908 const char *paux = p + vn->vn_aux;
909 for (unsigned j = 0; j < vn->vn_cnt; j++) {
910 if (paux + sizeof(Elf_Vernaux) > sec_end)
911 report_fatal_error("Section ended unexpected while scanning auxiliary "
912 "version needed records.");
913 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
914 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
915 if (index >= VersionMap.size())
916 VersionMap.resize(index+1);
917 VersionMap[index] = VersionMapEntry(vna);
918 paux += vna->vna_next;
925 void ELFObjectFile<ELFT>::LoadVersionMap() const {
926 // If there is no dynamic symtab or version table, there is nothing to do.
927 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
930 // Has the VersionMap already been loaded?
931 if (VersionMap.size() > 0)
934 // The first two version indexes are reserved.
935 // Index 0 is LOCAL, index 1 is GLOBAL.
936 VersionMap.push_back(VersionMapEntry());
937 VersionMap.push_back(VersionMapEntry());
939 if (dot_gnu_version_d_sec)
940 LoadVersionDefs(dot_gnu_version_d_sec);
942 if (dot_gnu_version_r_sec)
943 LoadVersionNeeds(dot_gnu_version_r_sec);
947 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
949 const Elf_Sym *symb = getSymbol(Symb);
950 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
951 // FIXME: We really need to do proper error handling in the case of an invalid
952 // input file. Because we don't use exceptions, I think we'll just pass
953 // an error object around.
955 && SymbolTableSection
956 && symb >= (const Elf_Sym*)(base()
957 + SymbolTableSection->sh_offset)
958 && symb < (const Elf_Sym*)(base()
959 + SymbolTableSection->sh_offset
960 + SymbolTableSection->sh_size)))
961 // FIXME: Proper error handling.
962 report_fatal_error("Symb must point to a valid symbol!");
967 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
968 SymbolRef &Result) const {
969 validateSymbol(Symb);
970 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
973 // Check to see if we are at the end of this symbol table.
974 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
975 // We are at the end. If there are other symbol tables, jump to them.
976 // If the symbol table is .dynsym, we are iterating dynamic symbols,
977 // and there is only one table of these.
980 Symb.d.a = 1; // The 0th symbol in ELF is fake.
982 // Otherwise return the terminator.
983 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
984 Symb.d.a = std::numeric_limits<uint32_t>::max();
985 Symb.d.b = std::numeric_limits<uint32_t>::max();
989 Result = SymbolRef(Symb, this);
990 return object_error::success;
994 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
995 StringRef &Result) const {
996 validateSymbol(Symb);
997 const Elf_Sym *symb = getSymbol(Symb);
998 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
1001 template<class ELFT>
1002 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
1004 bool &IsDefault) const {
1005 DataRefImpl Symb = SymRef.getRawDataRefImpl();
1006 validateSymbol(Symb);
1007 const Elf_Sym *symb = getSymbol(Symb);
1008 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
1009 Version, IsDefault);
1012 template<class ELFT>
1013 ELF::Elf64_Word ELFObjectFile<ELFT>
1014 ::getSymbolTableIndex(const Elf_Sym *symb) const {
1015 if (symb->st_shndx == ELF::SHN_XINDEX)
1016 return ExtendedSymbolTable.lookup(symb);
1017 return symb->st_shndx;
1020 template<class ELFT>
1021 const typename ELFObjectFile<ELFT>::Elf_Shdr *
1022 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
1023 if (symb->st_shndx == ELF::SHN_XINDEX)
1024 return getSection(ExtendedSymbolTable.lookup(symb));
1025 if (symb->st_shndx >= ELF::SHN_LORESERVE)
1027 return getSection(symb->st_shndx);
1030 template<class ELFT>
1031 const typename ELFObjectFile<ELFT>::Elf_Ehdr *
1032 ELFObjectFile<ELFT>::getElfHeader() const {
1036 template<class ELFT>
1037 const typename ELFObjectFile<ELFT>::Elf_Shdr *
1038 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
1039 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
1040 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
1043 template<class ELFT>
1044 const typename ELFObjectFile<ELFT>::Elf_Sym *
1045 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
1046 return getSymbol(It->getRawDataRefImpl());
1049 template<class ELFT>
1050 const typename ELFObjectFile<ELFT>::Elf_Sym *
1051 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
1052 DataRefImpl SymbolData;
1053 SymbolData.d.a = index;
1055 return getSymbol(SymbolData);
1058 template<class ELFT>
1059 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1060 uint64_t &Result) const {
1061 validateSymbol(Symb);
1062 const Elf_Sym *symb = getSymbol(Symb);
1063 const Elf_Shdr *Section;
1064 switch (getSymbolTableIndex(symb)) {
1065 case ELF::SHN_COMMON:
1066 // Unintialized symbols have no offset in the object file
1067 case ELF::SHN_UNDEF:
1068 Result = UnknownAddressOrSize;
1069 return object_error::success;
1071 Result = symb->st_value;
1072 return object_error::success;
1073 default: Section = getSection(symb);
1076 switch (symb->getType()) {
1077 case ELF::STT_SECTION:
1078 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1079 return object_error::success;
1081 case ELF::STT_OBJECT:
1082 case ELF::STT_NOTYPE:
1083 Result = symb->st_value +
1084 (Section ? Section->sh_offset : 0);
1085 return object_error::success;
1087 Result = UnknownAddressOrSize;
1088 return object_error::success;
1092 template<class ELFT>
1093 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1094 uint64_t &Result) const {
1095 validateSymbol(Symb);
1096 const Elf_Sym *symb = getSymbol(Symb);
1097 const Elf_Shdr *Section;
1098 switch (getSymbolTableIndex(symb)) {
1099 case ELF::SHN_COMMON:
1100 case ELF::SHN_UNDEF:
1101 Result = UnknownAddressOrSize;
1102 return object_error::success;
1104 Result = symb->st_value;
1105 return object_error::success;
1106 default: Section = getSection(symb);
1109 switch (symb->getType()) {
1110 case ELF::STT_SECTION:
1111 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1112 return object_error::success;
1114 case ELF::STT_OBJECT:
1115 case ELF::STT_NOTYPE:
1117 switch(Header->e_type) {
1120 IsRelocatable = false;
1123 IsRelocatable = true;
1125 Result = symb->st_value;
1127 // Clear the ARM/Thumb indicator flag.
1128 if (Header->e_machine == ELF::EM_ARM)
1131 if (IsRelocatable && Section != 0)
1132 Result += Section->sh_addr;
1133 return object_error::success;
1135 Result = UnknownAddressOrSize;
1136 return object_error::success;
1140 template<class ELFT>
1141 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1142 uint64_t &Result) const {
1143 validateSymbol(Symb);
1144 const Elf_Sym *symb = getSymbol(Symb);
1145 if (symb->st_size == 0)
1146 Result = UnknownAddressOrSize;
1147 Result = symb->st_size;
1148 return object_error::success;
1151 template<class ELFT>
1152 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1153 char &Result) const {
1154 validateSymbol(Symb);
1155 const Elf_Sym *symb = getSymbol(Symb);
1156 const Elf_Shdr *Section = getSection(symb);
1161 switch (Section->sh_type) {
1162 case ELF::SHT_PROGBITS:
1163 case ELF::SHT_DYNAMIC:
1164 switch (Section->sh_flags) {
1165 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1167 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1169 case ELF::SHF_ALLOC:
1170 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1171 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1175 case ELF::SHT_NOBITS: ret = 'b';
1179 switch (getSymbolTableIndex(symb)) {
1180 case ELF::SHN_UNDEF:
1184 case ELF::SHN_ABS: ret = 'a'; break;
1185 case ELF::SHN_COMMON: ret = 'c'; break;
1188 switch (symb->getBinding()) {
1189 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1191 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1194 if (symb->getType() == ELF::STT_OBJECT)
1200 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1202 if (error_code ec = getSymbolName(Symb, name))
1204 Result = StringSwitch<char>(name)
1205 .StartsWith(".debug", 'N')
1206 .StartsWith(".note", 'n')
1208 return object_error::success;
1212 return object_error::success;
1215 template<class ELFT>
1216 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1217 SymbolRef::Type &Result) const {
1218 validateSymbol(Symb);
1219 const Elf_Sym *symb = getSymbol(Symb);
1221 switch (symb->getType()) {
1222 case ELF::STT_NOTYPE:
1223 Result = SymbolRef::ST_Unknown;
1225 case ELF::STT_SECTION:
1226 Result = SymbolRef::ST_Debug;
1229 Result = SymbolRef::ST_File;
1232 Result = SymbolRef::ST_Function;
1234 case ELF::STT_OBJECT:
1235 case ELF::STT_COMMON:
1237 Result = SymbolRef::ST_Data;
1240 Result = SymbolRef::ST_Other;
1243 return object_error::success;
1246 template<class ELFT>
1247 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1248 uint32_t &Result) const {
1249 validateSymbol(Symb);
1250 const Elf_Sym *symb = getSymbol(Symb);
1252 Result = SymbolRef::SF_None;
1254 if (symb->getBinding() != ELF::STB_LOCAL)
1255 Result |= SymbolRef::SF_Global;
1257 if (symb->getBinding() == ELF::STB_WEAK)
1258 Result |= SymbolRef::SF_Weak;
1260 if (symb->st_shndx == ELF::SHN_ABS)
1261 Result |= SymbolRef::SF_Absolute;
1263 if (symb->getType() == ELF::STT_FILE ||
1264 symb->getType() == ELF::STT_SECTION)
1265 Result |= SymbolRef::SF_FormatSpecific;
1267 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1268 Result |= SymbolRef::SF_Undefined;
1270 if (symb->getType() == ELF::STT_COMMON ||
1271 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1272 Result |= SymbolRef::SF_Common;
1274 if (symb->getType() == ELF::STT_TLS)
1275 Result |= SymbolRef::SF_ThreadLocal;
1277 return object_error::success;
1280 template<class ELFT>
1281 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1282 section_iterator &Res) const {
1283 validateSymbol(Symb);
1284 const Elf_Sym *symb = getSymbol(Symb);
1285 const Elf_Shdr *sec = getSection(symb);
1287 Res = end_sections();
1290 Sec.p = reinterpret_cast<intptr_t>(sec);
1291 Res = section_iterator(SectionRef(Sec, this));
1293 return object_error::success;
1296 template<class ELFT>
1297 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1298 uint64_t &Val) const {
1299 validateSymbol(Symb);
1300 const Elf_Sym *symb = getSymbol(Symb);
1301 Val = symb->st_value;
1302 return object_error::success;
1305 template<class ELFT>
1306 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1307 SectionRef &Result) const {
1308 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1309 sec += Header->e_shentsize;
1310 Sec.p = reinterpret_cast<intptr_t>(sec);
1311 Result = SectionRef(Sec, this);
1312 return object_error::success;
1315 template<class ELFT>
1316 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1317 StringRef &Result) const {
1318 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1319 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1320 return object_error::success;
1323 template<class ELFT>
1324 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1325 uint64_t &Result) const {
1326 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1327 Result = sec->sh_addr;
1328 return object_error::success;
1331 template<class ELFT>
1332 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1333 uint64_t &Result) const {
1334 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1335 Result = sec->sh_size;
1336 return object_error::success;
1339 template<class ELFT>
1340 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1341 StringRef &Result) const {
1342 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1343 const char *start = (const char*)base() + sec->sh_offset;
1344 Result = StringRef(start, sec->sh_size);
1345 return object_error::success;
1348 template<class ELFT>
1349 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1350 StringRef &Result) const {
1351 const char *start = (const char*)base() + Sec->sh_offset;
1352 Result = StringRef(start, Sec->sh_size);
1353 return object_error::success;
1356 template<class ELFT>
1357 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1358 uint64_t &Result) const {
1359 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1360 Result = sec->sh_addralign;
1361 return object_error::success;
1364 template<class ELFT>
1365 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1366 bool &Result) const {
1367 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1368 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1372 return object_error::success;
1375 template<class ELFT>
1376 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1377 bool &Result) const {
1378 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1379 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1380 && sec->sh_type == ELF::SHT_PROGBITS)
1384 return object_error::success;
1387 template<class ELFT>
1388 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1389 bool &Result) const {
1390 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1391 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1392 && sec->sh_type == ELF::SHT_NOBITS)
1396 return object_error::success;
1399 template<class ELFT>
1400 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1401 DataRefImpl Sec, bool &Result) const {
1402 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1403 if (sec->sh_flags & ELF::SHF_ALLOC)
1407 return object_error::success;
1410 template<class ELFT>
1411 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1412 bool &Result) const {
1413 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1414 if (sec->sh_type == ELF::SHT_NOBITS)
1418 return object_error::success;
1421 template<class ELFT>
1422 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1423 bool &Result) const {
1424 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1425 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1426 // in the object image) and vice versa.
1427 Result = sec->sh_type == ELF::SHT_NOBITS;
1428 return object_error::success;
1431 template<class ELFT>
1432 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1433 bool &Result) const {
1434 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1435 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1439 return object_error::success;
1442 template<class ELFT>
1443 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1445 bool &Result) const {
1446 validateSymbol(Symb);
1448 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1449 const Elf_Sym *symb = getSymbol(Symb);
1451 unsigned shndx = symb->st_shndx;
1452 bool Reserved = shndx >= ELF::SHN_LORESERVE
1453 && shndx <= ELF::SHN_HIRESERVE;
1455 Result = !Reserved && (sec == getSection(symb->st_shndx));
1456 return object_error::success;
1459 template<class ELFT>
1461 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1462 DataRefImpl RelData;
1463 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1464 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1465 if (sec != 0 && ittr != SectionRelocMap.end()) {
1466 RelData.w.a = getSection(ittr->second[0])->sh_info;
1467 RelData.w.b = ittr->second[0];
1470 return relocation_iterator(RelocationRef(RelData, this));
1473 template<class ELFT>
1475 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1476 DataRefImpl RelData;
1477 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1478 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1479 if (sec != 0 && ittr != SectionRelocMap.end()) {
1480 // Get the index of the last relocation section for this section.
1481 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1482 const Elf_Shdr *relocsec = getSection(relocsecindex);
1483 RelData.w.a = relocsec->sh_info;
1484 RelData.w.b = relocsecindex;
1485 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1487 return relocation_iterator(RelocationRef(RelData, this));
1491 template<class ELFT>
1492 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1493 RelocationRef &Result) const {
1495 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1496 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1497 // We have reached the end of the relocations for this section. See if there
1498 // is another relocation section.
1499 typename RelocMap_t::mapped_type relocseclist =
1500 SectionRelocMap.lookup(getSection(Rel.w.a));
1502 // Do a binary search for the current reloc section index (which must be
1503 // present). Then get the next one.
1504 typename RelocMap_t::mapped_type::const_iterator loc =
1505 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1508 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1509 // to the end iterator.
1510 if (loc != relocseclist.end()) {
1515 Result = RelocationRef(Rel, this);
1516 return object_error::success;
1519 template<class ELFT>
1520 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1521 SymbolRef &Result) const {
1523 const Elf_Shdr *sec = getSection(Rel.w.b);
1524 switch (sec->sh_type) {
1526 report_fatal_error("Invalid section type in Rel!");
1527 case ELF::SHT_REL : {
1528 symbolIdx = getRel(Rel)->getSymbol(isMips64EL());
1531 case ELF::SHT_RELA : {
1532 symbolIdx = getRela(Rel)->getSymbol(isMips64EL());
1536 DataRefImpl SymbolData;
1537 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1538 if (it == SymbolTableSectionsIndexMap.end())
1539 report_fatal_error("Relocation symbol table not found!");
1540 SymbolData.d.a = symbolIdx;
1541 SymbolData.d.b = it->second;
1542 Result = SymbolRef(SymbolData, this);
1543 return object_error::success;
1546 template<class ELFT>
1547 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1548 uint64_t &Result) const {
1550 const Elf_Shdr *sec = getSection(Rel.w.b);
1551 switch (sec->sh_type) {
1553 report_fatal_error("Invalid section type in Rel!");
1554 case ELF::SHT_REL : {
1555 offset = getRel(Rel)->r_offset;
1558 case ELF::SHT_RELA : {
1559 offset = getRela(Rel)->r_offset;
1565 return object_error::success;
1568 template<class ELFT>
1569 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1570 uint64_t &Result) const {
1572 const Elf_Shdr *sec = getSection(Rel.w.b);
1573 switch (sec->sh_type) {
1575 report_fatal_error("Invalid section type in Rel!");
1576 case ELF::SHT_REL : {
1577 offset = getRel(Rel)->r_offset;
1580 case ELF::SHT_RELA : {
1581 offset = getRela(Rel)->r_offset;
1586 Result = offset - sec->sh_addr;
1587 return object_error::success;
1590 template<class ELFT>
1591 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1592 uint64_t &Result) const {
1593 const Elf_Shdr *sec = getSection(Rel.w.b);
1594 switch (sec->sh_type) {
1596 report_fatal_error("Invalid section type in Rel!");
1597 case ELF::SHT_REL : {
1598 Result = getRel(Rel)->getType(isMips64EL());
1601 case ELF::SHT_RELA : {
1602 Result = getRela(Rel)->getType(isMips64EL());
1606 return object_error::success;
1609 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1610 case ELF::enum: res = #enum; break;
1612 template<class ELFT>
1613 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1614 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1615 const Elf_Shdr *sec = getSection(Rel.w.b);
1618 switch (sec->sh_type) {
1620 return object_error::parse_failed;
1621 case ELF::SHT_REL : {
1622 type = getRel(Rel)->getType(isMips64EL());
1625 case ELF::SHT_RELA : {
1626 type = getRela(Rel)->getType(isMips64EL());
1630 switch (Header->e_machine) {
1631 case ELF::EM_X86_64:
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1772 case ELF::EM_AARCH64:
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1947 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1948 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1949 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1950 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1951 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1952 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1953 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1954 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1955 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1956 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1989 case ELF::EM_HEXAGON:
1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
2012 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
2013 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
2014 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
2015 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
2016 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
2017 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
2018 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
2019 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
2020 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
2021 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
2022 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
2023 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
2024 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
2025 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
2026 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
2027 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
2028 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
2029 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
2030 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
2031 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
2032 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
2033 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
2034 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
2035 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
2036 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
2037 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
2038 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
2039 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
2040 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
2041 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
2042 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
2043 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
2044 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
2045 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
2046 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
2047 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
2048 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
2049 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
2050 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
2051 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
2052 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
2053 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
2054 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
2055 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
2056 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
2057 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
2058 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
2059 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
2060 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
2061 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
2062 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
2063 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
2064 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2065 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2066 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2067 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2068 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2069 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2070 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2071 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2072 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2073 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2074 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2075 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2076 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2084 Result.append(res.begin(), res.end());
2085 return object_error::success;
2088 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2090 template<class ELFT>
2091 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
2092 DataRefImpl Rel, int64_t &Result) const {
2093 const Elf_Shdr *sec = getSection(Rel.w.b);
2094 switch (sec->sh_type) {
2096 report_fatal_error("Invalid section type in Rel!");
2097 case ELF::SHT_REL : {
2099 return object_error::success;
2101 case ELF::SHT_RELA : {
2102 Result = getRela(Rel)->r_addend;
2103 return object_error::success;
2108 template<class ELFT>
2109 error_code ELFObjectFile<ELFT>::getRelocationValueString(
2110 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2111 const Elf_Shdr *sec = getSection(Rel.w.b);
2115 uint16_t symbol_index = 0;
2116 switch (sec->sh_type) {
2118 return object_error::parse_failed;
2119 case ELF::SHT_REL: {
2120 type = getRel(Rel)->getType(isMips64EL());
2121 symbol_index = getRel(Rel)->getSymbol(isMips64EL());
2122 // TODO: Read implicit addend from section data.
2125 case ELF::SHT_RELA: {
2126 type = getRela(Rel)->getType(isMips64EL());
2127 symbol_index = getRela(Rel)->getSymbol(isMips64EL());
2128 addend = getRela(Rel)->r_addend;
2132 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2134 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2136 switch (Header->e_machine) {
2137 case ELF::EM_X86_64:
2139 case ELF::R_X86_64_PC8:
2140 case ELF::R_X86_64_PC16:
2141 case ELF::R_X86_64_PC32: {
2143 raw_string_ostream fmt(fmtbuf);
2144 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2146 Result.append(fmtbuf.begin(), fmtbuf.end());
2149 case ELF::R_X86_64_8:
2150 case ELF::R_X86_64_16:
2151 case ELF::R_X86_64_32:
2152 case ELF::R_X86_64_32S:
2153 case ELF::R_X86_64_64: {
2155 raw_string_ostream fmt(fmtbuf);
2156 fmt << symname << (addend < 0 ? "" : "+") << addend;
2158 Result.append(fmtbuf.begin(), fmtbuf.end());
2165 case ELF::EM_AARCH64:
2167 case ELF::EM_HEXAGON:
2174 Result.append(res.begin(), res.end());
2175 return object_error::success;
2178 // Verify that the last byte in the string table in a null.
2179 template<class ELFT>
2180 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2181 const char *strtab = (const char*)base() + sh->sh_offset;
2182 if (strtab[sh->sh_size - 1] != 0)
2183 // FIXME: Proper error handling.
2184 report_fatal_error("String table must end with a null terminator!");
2187 template<class ELFT>
2188 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2189 : ObjectFile(getELFType(
2190 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2194 , isDyldELFObject(false)
2195 , SectionHeaderTable(0)
2196 , dot_shstrtab_sec(0)
2199 , dot_dynamic_sec(0)
2200 , dot_gnu_version_sec(0)
2201 , dot_gnu_version_r_sec(0)
2202 , dot_gnu_version_d_sec(0)
2206 const uint64_t FileSize = Data->getBufferSize();
2208 if (sizeof(Elf_Ehdr) > FileSize)
2209 // FIXME: Proper error handling.
2210 report_fatal_error("File too short!");
2212 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2214 if (Header->e_shoff == 0)
2217 const uint64_t SectionTableOffset = Header->e_shoff;
2219 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2220 // FIXME: Proper error handling.
2221 report_fatal_error("Section header table goes past end of file!");
2223 // The getNumSections() call below depends on SectionHeaderTable being set.
2224 SectionHeaderTable =
2225 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2226 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2228 if (SectionTableOffset + SectionTableSize > FileSize)
2229 // FIXME: Proper error handling.
2230 report_fatal_error("Section table goes past end of file!");
2232 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2233 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2234 const Elf_Shdr* sh = SectionHeaderTable;
2236 // Reserve SymbolTableSections[0] for .dynsym
2237 SymbolTableSections.push_back(NULL);
2239 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2240 switch (sh->sh_type) {
2241 case ELF::SHT_SYMTAB_SHNDX: {
2242 if (SymbolTableSectionHeaderIndex)
2243 // FIXME: Proper error handling.
2244 report_fatal_error("More than one .symtab_shndx!");
2245 SymbolTableSectionHeaderIndex = sh;
2248 case ELF::SHT_SYMTAB: {
2249 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2250 SymbolTableSections.push_back(sh);
2253 case ELF::SHT_DYNSYM: {
2254 if (SymbolTableSections[0] != NULL)
2255 // FIXME: Proper error handling.
2256 report_fatal_error("More than one .dynsym!");
2257 SymbolTableSectionsIndexMap[i] = 0;
2258 SymbolTableSections[0] = sh;
2262 case ELF::SHT_RELA: {
2263 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2266 case ELF::SHT_DYNAMIC: {
2267 if (dot_dynamic_sec != NULL)
2268 // FIXME: Proper error handling.
2269 report_fatal_error("More than one .dynamic!");
2270 dot_dynamic_sec = sh;
2273 case ELF::SHT_GNU_versym: {
2274 if (dot_gnu_version_sec != NULL)
2275 // FIXME: Proper error handling.
2276 report_fatal_error("More than one .gnu.version section!");
2277 dot_gnu_version_sec = sh;
2280 case ELF::SHT_GNU_verdef: {
2281 if (dot_gnu_version_d_sec != NULL)
2282 // FIXME: Proper error handling.
2283 report_fatal_error("More than one .gnu.version_d section!");
2284 dot_gnu_version_d_sec = sh;
2287 case ELF::SHT_GNU_verneed: {
2288 if (dot_gnu_version_r_sec != NULL)
2289 // FIXME: Proper error handling.
2290 report_fatal_error("More than one .gnu.version_r section!");
2291 dot_gnu_version_r_sec = sh;
2298 // Sort section relocation lists by index.
2299 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2300 e = SectionRelocMap.end(); i != e; ++i) {
2301 std::sort(i->second.begin(), i->second.end());
2304 // Get string table sections.
2305 dot_shstrtab_sec = getSection(getStringTableIndex());
2306 if (dot_shstrtab_sec) {
2307 // Verify that the last byte in the string table in a null.
2308 VerifyStrTab(dot_shstrtab_sec);
2311 // Merge this into the above loop.
2312 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2313 *e = i + getNumSections() * Header->e_shentsize;
2314 i != e; i += Header->e_shentsize) {
2315 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2316 if (sh->sh_type == ELF::SHT_STRTAB) {
2317 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2318 if (SectionName == ".strtab") {
2319 if (dot_strtab_sec != 0)
2320 // FIXME: Proper error handling.
2321 report_fatal_error("Already found section named .strtab!");
2322 dot_strtab_sec = sh;
2323 VerifyStrTab(dot_strtab_sec);
2324 } else if (SectionName == ".dynstr") {
2325 if (dot_dynstr_sec != 0)
2326 // FIXME: Proper error handling.
2327 report_fatal_error("Already found section named .dynstr!");
2328 dot_dynstr_sec = sh;
2329 VerifyStrTab(dot_dynstr_sec);
2334 // Build symbol name side-mapping if there is one.
2335 if (SymbolTableSectionHeaderIndex) {
2336 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2337 SymbolTableSectionHeaderIndex->sh_offset);
2339 for (symbol_iterator si = begin_symbols(),
2340 se = end_symbols(); si != se; si.increment(ec)) {
2342 report_fatal_error("Fewer extended symbol table entries than symbols!");
2343 if (*ShndxTable != ELF::SHN_UNDEF)
2344 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2350 // Get the symbol table index in the symtab section given a symbol
2351 template<class ELFT>
2352 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2353 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2354 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2355 uintptr_t SymLoc = uintptr_t(Sym);
2356 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2357 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2358 uint64_t SymOffset = SymLoc - SymTabLoc;
2359 assert(SymOffset % SymTab->sh_entsize == 0 &&
2360 "Symbol not multiple of symbol size!");
2361 return SymOffset / SymTab->sh_entsize;
2364 template<class ELFT>
2365 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2366 DataRefImpl SymbolData;
2367 if (SymbolTableSections.size() <= 1) {
2368 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2369 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2371 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2372 SymbolData.d.b = 1; // The 0th table is .dynsym
2374 return symbol_iterator(SymbolRef(SymbolData, this));
2377 template<class ELFT>
2378 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2379 DataRefImpl SymbolData;
2380 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2381 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2382 return symbol_iterator(SymbolRef(SymbolData, this));
2385 template<class ELFT>
2386 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2387 DataRefImpl SymbolData;
2388 if (SymbolTableSections[0] == NULL) {
2389 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2390 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2392 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2393 SymbolData.d.b = 0; // The 0th table is .dynsym
2395 return symbol_iterator(SymbolRef(SymbolData, this));
2398 template<class ELFT>
2399 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2400 DataRefImpl SymbolData;
2401 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2402 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2403 return symbol_iterator(SymbolRef(SymbolData, this));
2406 template<class ELFT>
2407 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2409 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2410 return section_iterator(SectionRef(ret, this));
2413 template<class ELFT>
2414 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2416 ret.p = reinterpret_cast<intptr_t>(base()
2418 + (Header->e_shentsize*getNumSections()));
2419 return section_iterator(SectionRef(ret, this));
2422 template<class ELFT>
2423 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2424 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2425 if (dot_dynamic_sec)
2426 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2427 (const char *)base() + dot_dynamic_sec->sh_offset);
2428 return Elf_Dyn_iterator(0, 0);
2431 template<class ELFT>
2432 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2433 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2434 if (dot_dynamic_sec) {
2435 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2436 (const char *)base() + dot_dynamic_sec->sh_offset +
2437 dot_dynamic_sec->sh_size);
2440 Elf_Dyn_iterator Start = begin_dynamic_table();
2441 while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2444 // Include the DT_NULL.
2451 return Elf_Dyn_iterator(0, 0);
2454 template<class ELFT>
2455 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2457 // Find the DT_SONAME entry
2458 Elf_Dyn_iterator it = begin_dynamic_table();
2459 Elf_Dyn_iterator ie = end_dynamic_table();
2460 while (it != ie && it->getTag() != ELF::DT_SONAME)
2464 if (dot_dynstr_sec == NULL)
2465 report_fatal_error("Dynamic string table is missing");
2466 dt_soname = getString(dot_dynstr_sec, it->getVal());
2474 template<class ELFT>
2475 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2476 // Find the first DT_NEEDED entry
2477 Elf_Dyn_iterator i = begin_dynamic_table();
2478 Elf_Dyn_iterator e = end_dynamic_table();
2479 while (i != e && i->getTag() != ELF::DT_NEEDED)
2483 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2484 return library_iterator(LibraryRef(DRI, this));
2487 template<class ELFT>
2488 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2489 LibraryRef &Result) const {
2490 // Use the same DataRefImpl format as DynRef.
2491 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2492 reinterpret_cast<const char *>(Data.p));
2493 Elf_Dyn_iterator e = end_dynamic_table();
2495 // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2498 while (i != e && i->getTag() != ELF::DT_NEEDED);
2501 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2502 Result = LibraryRef(DRI, this);
2503 return object_error::success;
2506 template<class ELFT>
2507 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2508 StringRef &Res) const {
2509 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2510 reinterpret_cast<const char *>(Data.p));
2511 if (i == end_dynamic_table())
2512 report_fatal_error("getLibraryPath() called on iterator end");
2514 if (i->getTag() != ELF::DT_NEEDED)
2515 report_fatal_error("Invalid library_iterator");
2517 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2518 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2519 // the time, but the specification allows exceptions.
2520 // TODO: This should really use DT_STRTAB instead. Doing this requires
2521 // reading the program headers.
2522 if (dot_dynstr_sec == NULL)
2523 report_fatal_error("Dynamic string table is missing");
2524 Res = getString(dot_dynstr_sec, i->getVal());
2525 return object_error::success;
2528 template<class ELFT>
2529 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2530 Elf_Dyn_iterator e = end_dynamic_table();
2532 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2533 return library_iterator(LibraryRef(DRI, this));
2536 template<class ELFT>
2537 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2538 return ELFT::Is64Bits ? 8 : 4;
2541 template<class ELFT>
2542 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2543 switch(Header->e_ident[ELF::EI_CLASS]) {
2544 case ELF::ELFCLASS32:
2545 switch(Header->e_machine) {
2547 return "ELF32-i386";
2548 case ELF::EM_X86_64:
2549 return "ELF32-x86-64";
2552 case ELF::EM_HEXAGON:
2553 return "ELF32-hexagon";
2555 return "ELF32-mips";
2557 return "ELF32-unknown";
2559 case ELF::ELFCLASS64:
2560 switch(Header->e_machine) {
2562 return "ELF64-i386";
2563 case ELF::EM_X86_64:
2564 return "ELF64-x86-64";
2565 case ELF::EM_AARCH64:
2566 return "ELF64-aarch64";
2568 return "ELF64-ppc64";
2570 return "ELF64-unknown";
2573 // FIXME: Proper error handling.
2574 report_fatal_error("Invalid ELFCLASS!");
2578 template<class ELFT>
2579 unsigned ELFObjectFile<ELFT>::getArch() const {
2580 switch(Header->e_machine) {
2583 case ELF::EM_X86_64:
2584 return Triple::x86_64;
2585 case ELF::EM_AARCH64:
2586 return Triple::aarch64;
2589 case ELF::EM_HEXAGON:
2590 return Triple::hexagon;
2592 return (ELFT::TargetEndianness == support::little) ?
2593 Triple::mipsel : Triple::mips;
2595 return Triple::ppc64;
2597 return Triple::UnknownArch;
2601 template<class ELFT>
2602 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2603 assert(Header && "Header not initialized!");
2604 if (Header->e_shnum == ELF::SHN_UNDEF) {
2605 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2606 return SectionHeaderTable->sh_size;
2608 return Header->e_shnum;
2611 template<class ELFT>
2613 ELFObjectFile<ELFT>::getStringTableIndex() const {
2614 if (Header->e_shnum == ELF::SHN_UNDEF) {
2615 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2616 return SectionHeaderTable->sh_link;
2617 if (Header->e_shstrndx >= getNumSections())
2620 return Header->e_shstrndx;
2623 template<class ELFT>
2624 template<typename T>
2626 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2627 return getEntry<T>(getSection(Section), Entry);
2630 template<class ELFT>
2631 template<typename T>
2633 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2634 return reinterpret_cast<const T *>(
2636 + Section->sh_offset
2637 + (Entry * Section->sh_entsize));
2640 template<class ELFT>
2641 const typename ELFObjectFile<ELFT>::Elf_Sym *
2642 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2643 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2646 template<class ELFT>
2647 const typename ELFObjectFile<ELFT>::Elf_Rel *
2648 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2649 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2652 template<class ELFT>
2653 const typename ELFObjectFile<ELFT>::Elf_Rela *
2654 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2655 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2658 template<class ELFT>
2659 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2660 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2661 const Elf_Shdr *sec = getSection(Symb.d.b);
2662 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2663 // FIXME: Proper error handling.
2664 report_fatal_error("Invalid symbol table section!");
2668 template<class ELFT>
2669 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2670 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2673 if (!SectionHeaderTable || index >= getNumSections())
2674 // FIXME: Proper error handling.
2675 report_fatal_error("Invalid section index!");
2677 return reinterpret_cast<const Elf_Shdr *>(
2678 reinterpret_cast<const char *>(SectionHeaderTable)
2679 + (index * Header->e_shentsize));
2682 template<class ELFT>
2683 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2684 ELF::Elf32_Word offset) const {
2685 return getString(getSection(section), offset);
2688 template<class ELFT>
2689 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2690 ELF::Elf32_Word offset) const {
2691 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2692 if (offset >= section->sh_size)
2693 // FIXME: Proper error handling.
2694 report_fatal_error("Symbol name offset outside of string table!");
2695 return (const char *)base() + section->sh_offset + offset;
2698 template<class ELFT>
2699 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2700 const Elf_Sym *symb,
2701 StringRef &Result) const {
2702 if (symb->st_name == 0) {
2703 const Elf_Shdr *section = getSection(symb);
2707 Result = getString(dot_shstrtab_sec, section->sh_name);
2708 return object_error::success;
2711 if (section == SymbolTableSections[0]) {
2712 // Symbol is in .dynsym, use .dynstr string table
2713 Result = getString(dot_dynstr_sec, symb->st_name);
2715 // Use the default symbol table name section.
2716 Result = getString(dot_strtab_sec, symb->st_name);
2718 return object_error::success;
2721 template<class ELFT>
2722 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2723 StringRef &Result) const {
2724 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2725 return object_error::success;
2728 template<class ELFT>
2729 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2730 const Elf_Sym *symb,
2732 bool &IsDefault) const {
2733 // Handle non-dynamic symbols.
2734 if (section != SymbolTableSections[0]) {
2735 // Non-dynamic symbols can have versions in their names
2736 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2737 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2739 error_code ec = getSymbolName(section, symb, Name);
2740 if (ec != object_error::success)
2742 size_t atpos = Name.find('@');
2743 if (atpos == StringRef::npos) {
2746 return object_error::success;
2749 if (atpos < Name.size() && Name[atpos] == '@') {
2755 Version = Name.substr(atpos);
2756 return object_error::success;
2759 // This is a dynamic symbol. Look in the GNU symbol version table.
2760 if (dot_gnu_version_sec == NULL) {
2761 // No version table.
2764 return object_error::success;
2767 // Determine the position in the symbol table of this entry.
2768 const char *sec_start = (const char*)base() + section->sh_offset;
2769 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2771 // Get the corresponding version index entry
2772 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2773 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2775 // Special markers for unversioned symbols.
2776 if (version_index == ELF::VER_NDX_LOCAL ||
2777 version_index == ELF::VER_NDX_GLOBAL) {
2780 return object_error::success;
2783 // Lookup this symbol in the version table
2785 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2786 report_fatal_error("Symbol has version index without corresponding "
2787 "define or reference entry");
2788 const VersionMapEntry &entry = VersionMap[version_index];
2790 // Get the version name string
2792 if (entry.isVerdef()) {
2793 // The first Verdaux entry holds the name.
2794 name_offset = entry.getVerdef()->getAux()->vda_name;
2796 name_offset = entry.getVernaux()->vna_name;
2798 Version = getString(dot_dynstr_sec, name_offset);
2801 if (entry.isVerdef()) {
2802 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2807 return object_error::success;
2810 /// This is a generic interface for retrieving GNU symbol version
2811 /// information from an ELFObjectFile.
2812 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2813 const SymbolRef &Sym,
2816 // Little-endian 32-bit
2817 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2818 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2819 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2821 // Big-endian 32-bit
2822 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2823 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2824 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2826 // Little-endian 64-bit
2827 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2828 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2829 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2831 // Big-endian 64-bit
2832 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2833 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2834 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2836 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2839 /// This function returns the hash value for a symbol in the .dynsym section
2840 /// Name of the API remains consistent as specified in the libelf
2841 /// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
2842 static inline unsigned elf_hash(StringRef &symbolName) {
2844 for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
2845 h = (h << 4) + symbolName[i];
2846 g = h & 0xf0000000L;