1 //===- ELF.h - ELF object file implementation -------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the ELFObjectFile template class.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_OBJECT_ELF_H
15 #define LLVM_OBJECT_ELF_H
17 #include "llvm/ADT/DenseMap.h"
18 #include "llvm/ADT/PointerIntPair.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/Object/ObjectFile.h"
23 #include "llvm/Support/Casting.h"
24 #include "llvm/Support/ELF.h"
25 #include "llvm/Support/Endian.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/MemoryBuffer.h"
28 #include "llvm/Support/raw_ostream.h"
36 using support::endianness;
38 template<endianness target_endianness, std::size_t max_alignment, bool is64Bits>
40 static const endianness TargetEndianness = target_endianness;
41 static const std::size_t MaxAlignment = max_alignment;
42 static const bool Is64Bits = is64Bits;
45 template<typename T, int max_align>
46 struct MaximumAlignment {
47 enum {value = AlignOf<T>::Alignment > max_align ? max_align
48 : AlignOf<T>::Alignment};
51 // Subclasses of ELFObjectFile may need this for template instantiation
52 inline std::pair<unsigned char, unsigned char>
53 getElfArchType(MemoryBuffer *Object) {
54 if (Object->getBufferSize() < ELF::EI_NIDENT)
55 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
56 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
57 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
60 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
61 template<endianness target_endianness, std::size_t max_alignment>
62 struct ELFDataTypeTypedefHelperCommon {
63 typedef support::detail::packed_endian_specific_integral
64 <uint16_t, target_endianness,
65 MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half;
66 typedef support::detail::packed_endian_specific_integral
67 <uint32_t, target_endianness,
68 MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word;
69 typedef support::detail::packed_endian_specific_integral
70 <int32_t, target_endianness,
71 MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword;
72 typedef support::detail::packed_endian_specific_integral
73 <uint64_t, target_endianness,
74 MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword;
75 typedef support::detail::packed_endian_specific_integral
76 <int64_t, target_endianness,
77 MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword;
81 struct ELFDataTypeTypedefHelper;
84 template<template<endianness, std::size_t, bool> class ELFT,
85 endianness TargetEndianness, std::size_t MaxAlign>
86 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, false> >
87 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
88 typedef uint32_t value_type;
89 typedef support::detail::packed_endian_specific_integral
90 <value_type, TargetEndianness,
91 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
92 typedef support::detail::packed_endian_specific_integral
93 <value_type, TargetEndianness,
94 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
98 template<template<endianness, std::size_t, bool> class ELFT,
99 endianness TargetEndianness, std::size_t MaxAlign>
100 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, true> >
101 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
102 typedef uint64_t value_type;
103 typedef support::detail::packed_endian_specific_integral
104 <value_type, TargetEndianness,
105 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
106 typedef support::detail::packed_endian_specific_integral
107 <value_type, TargetEndianness,
108 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
111 // I really don't like doing this, but the alternative is copypasta.
112 #define LLVM_ELF_IMPORT_TYPES(ELFT) \
113 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Addr Elf_Addr; \
114 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Off Elf_Off; \
115 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Half Elf_Half; \
116 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Word Elf_Word; \
117 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sword Elf_Sword; \
118 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Xword Elf_Xword; \
119 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sxword Elf_Sxword;
121 // This is required to get template types into a macro :(
122 #define LLVM_ELF_COMMA ,
126 struct Elf_Shdr_Base;
128 template<template<endianness, std::size_t, bool> class ELFT,
129 endianness TargetEndianness, std::size_t MaxAlign>
130 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, false> > {
131 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
132 MaxAlign LLVM_ELF_COMMA false>)
133 Elf_Word sh_name; // Section name (index into string table)
134 Elf_Word sh_type; // Section type (SHT_*)
135 Elf_Word sh_flags; // Section flags (SHF_*)
136 Elf_Addr sh_addr; // Address where section is to be loaded
137 Elf_Off sh_offset; // File offset of section data, in bytes
138 Elf_Word sh_size; // Size of section, in bytes
139 Elf_Word sh_link; // Section type-specific header table index link
140 Elf_Word sh_info; // Section type-specific extra information
141 Elf_Word sh_addralign;// Section address alignment
142 Elf_Word sh_entsize; // Size of records contained within the section
145 template<template<endianness, std::size_t, bool> class ELFT,
146 endianness TargetEndianness, std::size_t MaxAlign>
147 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, true> > {
148 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
149 MaxAlign LLVM_ELF_COMMA true>)
150 Elf_Word sh_name; // Section name (index into string table)
151 Elf_Word sh_type; // Section type (SHT_*)
152 Elf_Xword sh_flags; // Section flags (SHF_*)
153 Elf_Addr sh_addr; // Address where section is to be loaded
154 Elf_Off sh_offset; // File offset of section data, in bytes
155 Elf_Xword sh_size; // Size of section, in bytes
156 Elf_Word sh_link; // Section type-specific header table index link
157 Elf_Word sh_info; // Section type-specific extra information
158 Elf_Xword sh_addralign;// Section address alignment
159 Elf_Xword sh_entsize; // Size of records contained within the section
163 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
164 using Elf_Shdr_Base<ELFT>::sh_entsize;
165 using Elf_Shdr_Base<ELFT>::sh_size;
167 /// @brief Get the number of entities this section contains if it has any.
168 unsigned getEntityCount() const {
171 return sh_size / sh_entsize;
178 template<template<endianness, std::size_t, bool> class ELFT,
179 endianness TargetEndianness, std::size_t MaxAlign>
180 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, false> > {
181 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
182 MaxAlign LLVM_ELF_COMMA false>)
183 Elf_Word st_name; // Symbol name (index into string table)
184 Elf_Addr st_value; // Value or address associated with the symbol
185 Elf_Word st_size; // Size of the symbol
186 unsigned char st_info; // Symbol's type and binding attributes
187 unsigned char st_other; // Must be zero; reserved
188 Elf_Half st_shndx; // Which section (header table index) it's defined in
191 template<template<endianness, std::size_t, bool> class ELFT,
192 endianness TargetEndianness, std::size_t MaxAlign>
193 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, true> > {
194 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
195 MaxAlign LLVM_ELF_COMMA true>)
196 Elf_Word st_name; // Symbol name (index into string table)
197 unsigned char st_info; // Symbol's type and binding attributes
198 unsigned char st_other; // Must be zero; reserved
199 Elf_Half st_shndx; // Which section (header table index) it's defined in
200 Elf_Addr st_value; // Value or address associated with the symbol
201 Elf_Xword st_size; // Size of the symbol
205 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
206 using Elf_Sym_Base<ELFT>::st_info;
208 // These accessors and mutators correspond to the ELF32_ST_BIND,
209 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
210 unsigned char getBinding() const { return st_info >> 4; }
211 unsigned char getType() const { return st_info & 0x0f; }
212 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
213 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
214 void setBindingAndType(unsigned char b, unsigned char t) {
215 st_info = (b << 4) + (t & 0x0f);
219 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
220 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
222 struct Elf_Versym_Impl {
223 LLVM_ELF_IMPORT_TYPES(ELFT)
224 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
228 struct Elf_Verdaux_Impl;
230 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
231 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
233 struct Elf_Verdef_Impl {
234 LLVM_ELF_IMPORT_TYPES(ELFT)
235 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
236 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
237 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
238 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
239 Elf_Half vd_cnt; // Number of Verdaux entries
240 Elf_Word vd_hash; // Hash of name
241 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
242 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
244 /// Get the first Verdaux entry for this Verdef.
245 const Elf_Verdaux *getAux() const {
246 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
250 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
251 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
253 struct Elf_Verdaux_Impl {
254 LLVM_ELF_IMPORT_TYPES(ELFT)
255 Elf_Word vda_name; // Version name (offset in string table)
256 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
259 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
260 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
262 struct Elf_Verneed_Impl {
263 LLVM_ELF_IMPORT_TYPES(ELFT)
264 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
265 Elf_Half vn_cnt; // Number of associated Vernaux entries
266 Elf_Word vn_file; // Library name (string table offset)
267 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
268 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
271 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
272 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
274 struct Elf_Vernaux_Impl {
275 LLVM_ELF_IMPORT_TYPES(ELFT)
276 Elf_Word vna_hash; // Hash of dependency name
277 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
278 Elf_Half vna_other; // Version index, used in .gnu.version entries
279 Elf_Word vna_name; // Dependency name
280 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
283 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
284 /// table section (.dynamic) look like.
288 template<template<endianness, std::size_t, bool> class ELFT,
289 endianness TargetEndianness, std::size_t MaxAlign>
290 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, false> > {
291 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
292 MaxAlign LLVM_ELF_COMMA false>)
300 template<template<endianness, std::size_t, bool> class ELFT,
301 endianness TargetEndianness, std::size_t MaxAlign>
302 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, true> > {
303 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
304 MaxAlign LLVM_ELF_COMMA true>)
312 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
314 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
315 using Elf_Dyn_Base<ELFT>::d_tag;
316 using Elf_Dyn_Base<ELFT>::d_un;
317 int64_t getTag() const { return d_tag; }
318 uint64_t getVal() const { return d_un.d_val; }
319 uint64_t getPtr() const { return d_un.ptr; }
322 // Elf_Rel: Elf Relocation
323 template<class ELFT, bool isRela>
326 template<template<endianness, std::size_t, bool> class ELFT,
327 endianness TargetEndianness, std::size_t MaxAlign>
328 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, false> {
329 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
330 MaxAlign LLVM_ELF_COMMA false>)
331 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
332 Elf_Word r_info; // Symbol table index and type of relocation to apply
335 template<template<endianness, std::size_t, bool> class ELFT,
336 endianness TargetEndianness, std::size_t MaxAlign>
337 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, false> {
338 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
339 MaxAlign LLVM_ELF_COMMA true>)
340 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
341 Elf_Xword r_info; // Symbol table index and type of relocation to apply
344 template<template<endianness, std::size_t, bool> class ELFT,
345 endianness TargetEndianness, std::size_t MaxAlign>
346 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, true> {
347 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
348 MaxAlign LLVM_ELF_COMMA false>)
349 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
350 Elf_Word r_info; // Symbol table index and type of relocation to apply
351 Elf_Sword r_addend; // Compute value for relocatable field by adding this
354 template<template<endianness, std::size_t, bool> class ELFT,
355 endianness TargetEndianness, std::size_t MaxAlign>
356 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, true> {
357 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
358 MaxAlign LLVM_ELF_COMMA true>)
359 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
360 Elf_Xword r_info; // Symbol table index and type of relocation to apply
361 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
364 template<class ELFT, bool isRela>
367 template<template<endianness, std::size_t, bool> class ELFT,
368 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
369 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, true>, isRela>
370 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela> {
371 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela>::r_info;
372 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
373 MaxAlign LLVM_ELF_COMMA true>)
375 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
376 // and ELF64_R_INFO macros defined in the ELF specification:
377 uint32_t getSymbol() const { return (uint32_t) (r_info >> 32); }
378 uint32_t getType() const {
379 return (uint32_t) (r_info & 0xffffffffL);
381 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
382 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
383 void setSymbolAndType(uint32_t s, uint32_t t) {
384 r_info = ((uint64_t)s << 32) + (t&0xffffffffL);
388 template<template<endianness, std::size_t, bool> class ELFT,
389 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
390 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, false>, isRela>
391 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela> {
392 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela>::r_info;
393 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
394 MaxAlign LLVM_ELF_COMMA false>)
396 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
397 // and ELF32_R_INFO macros defined in the ELF specification:
398 uint32_t getSymbol() const { return (r_info >> 8); }
399 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
400 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
401 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
402 void setSymbolAndType(uint32_t s, unsigned char t) {
403 r_info = (s << 8) + t;
408 struct Elf_Ehdr_Impl {
409 LLVM_ELF_IMPORT_TYPES(ELFT)
410 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
411 Elf_Half e_type; // Type of file (see ET_*)
412 Elf_Half e_machine; // Required architecture for this file (see EM_*)
413 Elf_Word e_version; // Must be equal to 1
414 Elf_Addr e_entry; // Address to jump to in order to start program
415 Elf_Off e_phoff; // Program header table's file offset, in bytes
416 Elf_Off e_shoff; // Section header table's file offset, in bytes
417 Elf_Word e_flags; // Processor-specific flags
418 Elf_Half e_ehsize; // Size of ELF header, in bytes
419 Elf_Half e_phentsize;// Size of an entry in the program header table
420 Elf_Half e_phnum; // Number of entries in the program header table
421 Elf_Half e_shentsize;// Size of an entry in the section header table
422 Elf_Half e_shnum; // Number of entries in the section header table
423 Elf_Half e_shstrndx; // Section header table index of section name
425 bool checkMagic() const {
426 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
428 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
429 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
433 struct Elf_Phdr_Impl;
435 template<template<endianness, std::size_t, bool> class ELFT,
436 endianness TargetEndianness, std::size_t MaxAlign>
437 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, false> > {
438 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
439 MaxAlign LLVM_ELF_COMMA false>)
440 Elf_Word p_type; // Type of segment
441 Elf_Off p_offset; // FileOffset where segment is located, in bytes
442 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
443 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
444 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
445 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
446 Elf_Word p_flags; // Segment flags
447 Elf_Word p_align; // Segment alignment constraint
450 template<template<endianness, std::size_t, bool> class ELFT,
451 endianness TargetEndianness, std::size_t MaxAlign>
452 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, true> > {
453 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
454 MaxAlign LLVM_ELF_COMMA true>)
455 Elf_Word p_type; // Type of segment
456 Elf_Word p_flags; // Segment flags
457 Elf_Off p_offset; // FileOffset where segment is located, in bytes
458 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
459 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
460 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
461 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
462 Elf_Xword p_align; // Segment alignment constraint
466 class ELFObjectFile : public ObjectFile {
467 LLVM_ELF_IMPORT_TYPES(ELFT)
470 /// \brief Iterate over constant sized entities.
472 class ELFEntityIterator {
474 typedef void difference_type;
475 typedef EntT value_type;
476 typedef std::forward_iterator_tag iterator_category;
477 typedef value_type &reference;
478 typedef value_type *pointer;
480 /// \brief Default construct iterator.
481 ELFEntityIterator() : EntitySize(0), Current(0) {}
482 ELFEntityIterator(uint64_t EntSize, const char *Start)
483 : EntitySize(EntSize)
486 reference operator *() {
487 assert(Current && "Attempted to dereference an invalid iterator!");
488 return *reinterpret_cast<pointer>(Current);
491 pointer operator ->() {
492 assert(Current && "Attempted to dereference an invalid iterator!");
493 return reinterpret_cast<pointer>(Current);
496 bool operator ==(const ELFEntityIterator &Other) {
497 return Current == Other.Current;
500 bool operator !=(const ELFEntityIterator &Other) {
501 return !(*this == Other);
504 ELFEntityIterator &operator ++() {
505 assert(Current && "Attempted to increment an invalid iterator!");
506 Current += EntitySize;
510 ELFEntityIterator operator ++(int) {
511 ELFEntityIterator Tmp = *this;
517 const uint64_t EntitySize;
522 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
523 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
524 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
525 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
526 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
527 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
528 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
529 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
530 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
531 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
532 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
533 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
534 typedef ELFEntityIterator<const Elf_Dyn> dyn_iterator;
537 // This flag is used for classof, to distinguish ELFObjectFile from
538 // its subclass. If more subclasses will be created, this flag will
539 // have to become an enum.
540 bool isDyldELFObject;
543 typedef SmallVector<const Elf_Shdr*, 1> Sections_t;
544 typedef DenseMap<unsigned, unsigned> IndexMap_t;
545 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
547 const Elf_Ehdr *Header;
548 const Elf_Shdr *SectionHeaderTable;
549 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
550 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
551 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
553 // SymbolTableSections[0] always points to the dynamic string table section
554 // header, or NULL if there is no dynamic string table.
555 Sections_t SymbolTableSections;
556 IndexMap_t SymbolTableSectionsIndexMap;
557 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
559 const Elf_Shdr *dot_dynamic_sec; // .dynamic
560 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
561 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
562 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
564 // Pointer to SONAME entry in dynamic string table
565 // This is set the first time getLoadName is called.
566 mutable const char *dt_soname;
569 // Records for each version index the corresponding Verdef or Vernaux entry.
570 // This is filled the first time LoadVersionMap() is called.
571 class VersionMapEntry : public PointerIntPair<const void*, 1> {
573 // If the integer is 0, this is an Elf_Verdef*.
574 // If the integer is 1, this is an Elf_Vernaux*.
575 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
576 VersionMapEntry(const Elf_Verdef *verdef)
577 : PointerIntPair<const void*, 1>(verdef, 0) { }
578 VersionMapEntry(const Elf_Vernaux *vernaux)
579 : PointerIntPair<const void*, 1>(vernaux, 1) { }
580 bool isNull() const { return getPointer() == NULL; }
581 bool isVerdef() const { return !isNull() && getInt() == 0; }
582 bool isVernaux() const { return !isNull() && getInt() == 1; }
583 const Elf_Verdef *getVerdef() const {
584 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
586 const Elf_Vernaux *getVernaux() const {
587 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
590 mutable SmallVector<VersionMapEntry, 16> VersionMap;
591 void LoadVersionDefs(const Elf_Shdr *sec) const;
592 void LoadVersionNeeds(const Elf_Shdr *ec) const;
593 void LoadVersionMap() const;
595 /// @brief Map sections to an array of relocation sections that reference
596 /// them sorted by section index.
597 RelocMap_t SectionRelocMap;
599 /// @brief Get the relocation section that contains \a Rel.
600 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
601 return getSection(Rel.w.b);
604 bool isRelocationHasAddend(DataRefImpl Rel) const;
606 const T *getEntry(uint16_t Section, uint32_t Entry) const;
608 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
609 const Elf_Shdr *getSection(DataRefImpl index) const;
610 const Elf_Shdr *getSection(uint32_t index) const;
611 const Elf_Rel *getRel(DataRefImpl Rel) const;
612 const Elf_Rela *getRela(DataRefImpl Rela) const;
613 const char *getString(uint32_t section, uint32_t offset) const;
614 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
615 error_code getSymbolVersion(const Elf_Shdr *section,
618 bool &IsDefault) const;
619 void VerifyStrTab(const Elf_Shdr *sh) const;
622 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
623 void validateSymbol(DataRefImpl Symb) const;
626 error_code getSymbolName(const Elf_Shdr *section,
628 StringRef &Res) const;
629 error_code getSectionName(const Elf_Shdr *section,
630 StringRef &Res) const;
631 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
632 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
633 bool &IsDefault) const;
634 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
636 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
637 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
638 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
639 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
640 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
641 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
642 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
643 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
644 virtual error_code getSymbolSection(DataRefImpl Symb,
645 section_iterator &Res) const;
646 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
648 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
649 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
651 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
652 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
653 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
654 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
655 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
656 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
657 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
658 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
659 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
660 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
662 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
663 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
664 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
665 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
667 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
668 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
670 virtual error_code getRelocationNext(DataRefImpl Rel,
671 RelocationRef &Res) const;
672 virtual error_code getRelocationAddress(DataRefImpl Rel,
673 uint64_t &Res) const;
674 virtual error_code getRelocationOffset(DataRefImpl Rel,
675 uint64_t &Res) const;
676 virtual error_code getRelocationSymbol(DataRefImpl Rel,
677 SymbolRef &Res) const;
678 virtual error_code getRelocationType(DataRefImpl Rel,
679 uint64_t &Res) const;
680 virtual error_code getRelocationTypeName(DataRefImpl Rel,
681 SmallVectorImpl<char> &Result) const;
682 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
684 virtual error_code getRelocationValueString(DataRefImpl Rel,
685 SmallVectorImpl<char> &Result) const;
688 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
689 virtual symbol_iterator begin_symbols() const;
690 virtual symbol_iterator end_symbols() const;
692 virtual symbol_iterator begin_dynamic_symbols() const;
693 virtual symbol_iterator end_dynamic_symbols() const;
695 virtual section_iterator begin_sections() const;
696 virtual section_iterator end_sections() const;
698 virtual library_iterator begin_libraries_needed() const;
699 virtual library_iterator end_libraries_needed() const;
701 dyn_iterator begin_dynamic_table() const;
702 dyn_iterator end_dynamic_table() const;
704 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
705 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
707 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
708 return Elf_Rela_Iter(sec->sh_entsize,
709 (const char *)(base() + sec->sh_offset));
712 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
713 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
714 (base() + sec->sh_offset + sec->sh_size));
717 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
718 return Elf_Rel_Iter(sec->sh_entsize,
719 (const char *)(base() + sec->sh_offset));
722 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
723 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
724 (base() + sec->sh_offset + sec->sh_size));
727 /// \brief Iterate over program header table.
728 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
730 Elf_Phdr_Iter begin_program_headers() const {
731 return Elf_Phdr_Iter(Header->e_phentsize,
732 (const char*)base() + Header->e_phoff);
735 Elf_Phdr_Iter end_program_headers() const {
736 return Elf_Phdr_Iter(Header->e_phentsize,
737 (const char*)base() +
739 (Header->e_phnum * Header->e_phentsize));
742 virtual uint8_t getBytesInAddress() const;
743 virtual StringRef getFileFormatName() const;
744 virtual StringRef getObjectType() const { return "ELF"; }
745 virtual unsigned getArch() const;
746 virtual StringRef getLoadName() const;
747 virtual error_code getSectionContents(const Elf_Shdr *sec,
748 StringRef &Res) const;
750 uint64_t getNumSections() const;
751 uint64_t getStringTableIndex() const;
752 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
753 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
754 const Elf_Shdr *getElfSection(section_iterator &It) const;
755 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
756 const Elf_Sym *getElfSymbol(uint32_t index) const;
758 // Methods for type inquiry through isa, cast, and dyn_cast
759 bool isDyldType() const { return isDyldELFObject; }
760 static inline bool classof(const Binary *v) {
761 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
766 // Iterate through the version definitions, and place each Elf_Verdef
767 // in the VersionMap according to its index.
769 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
770 unsigned vd_size = sec->sh_size; // Size of section in bytes
771 unsigned vd_count = sec->sh_info; // Number of Verdef entries
772 const char *sec_start = (const char*)base() + sec->sh_offset;
773 const char *sec_end = sec_start + vd_size;
774 // The first Verdef entry is at the start of the section.
775 const char *p = sec_start;
776 for (unsigned i = 0; i < vd_count; i++) {
777 if (p + sizeof(Elf_Verdef) > sec_end)
778 report_fatal_error("Section ended unexpectedly while scanning "
779 "version definitions.");
780 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
781 if (vd->vd_version != ELF::VER_DEF_CURRENT)
782 report_fatal_error("Unexpected verdef version");
783 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
784 if (index >= VersionMap.size())
785 VersionMap.resize(index+1);
786 VersionMap[index] = VersionMapEntry(vd);
791 // Iterate through the versions needed section, and place each Elf_Vernaux
792 // in the VersionMap according to its index.
794 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
795 unsigned vn_size = sec->sh_size; // Size of section in bytes
796 unsigned vn_count = sec->sh_info; // Number of Verneed entries
797 const char *sec_start = (const char*)base() + sec->sh_offset;
798 const char *sec_end = sec_start + vn_size;
799 // The first Verneed entry is at the start of the section.
800 const char *p = sec_start;
801 for (unsigned i = 0; i < vn_count; i++) {
802 if (p + sizeof(Elf_Verneed) > sec_end)
803 report_fatal_error("Section ended unexpectedly while scanning "
804 "version needed records.");
805 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
806 if (vn->vn_version != ELF::VER_NEED_CURRENT)
807 report_fatal_error("Unexpected verneed version");
808 // Iterate through the Vernaux entries
809 const char *paux = p + vn->vn_aux;
810 for (unsigned j = 0; j < vn->vn_cnt; j++) {
811 if (paux + sizeof(Elf_Vernaux) > sec_end)
812 report_fatal_error("Section ended unexpected while scanning auxiliary "
813 "version needed records.");
814 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
815 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
816 if (index >= VersionMap.size())
817 VersionMap.resize(index+1);
818 VersionMap[index] = VersionMapEntry(vna);
819 paux += vna->vna_next;
826 void ELFObjectFile<ELFT>::LoadVersionMap() const {
827 // If there is no dynamic symtab or version table, there is nothing to do.
828 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
831 // Has the VersionMap already been loaded?
832 if (VersionMap.size() > 0)
835 // The first two version indexes are reserved.
836 // Index 0 is LOCAL, index 1 is GLOBAL.
837 VersionMap.push_back(VersionMapEntry());
838 VersionMap.push_back(VersionMapEntry());
840 if (dot_gnu_version_d_sec)
841 LoadVersionDefs(dot_gnu_version_d_sec);
843 if (dot_gnu_version_r_sec)
844 LoadVersionNeeds(dot_gnu_version_r_sec);
848 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
849 const Elf_Sym *symb = getSymbol(Symb);
850 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
851 // FIXME: We really need to do proper error handling in the case of an invalid
852 // input file. Because we don't use exceptions, I think we'll just pass
853 // an error object around.
855 && SymbolTableSection
856 && symb >= (const Elf_Sym*)(base()
857 + SymbolTableSection->sh_offset)
858 && symb < (const Elf_Sym*)(base()
859 + SymbolTableSection->sh_offset
860 + SymbolTableSection->sh_size)))
861 // FIXME: Proper error handling.
862 report_fatal_error("Symb must point to a valid symbol!");
866 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
867 SymbolRef &Result) const {
868 validateSymbol(Symb);
869 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
872 // Check to see if we are at the end of this symbol table.
873 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
874 // We are at the end. If there are other symbol tables, jump to them.
875 // If the symbol table is .dynsym, we are iterating dynamic symbols,
876 // and there is only one table of these.
879 Symb.d.a = 1; // The 0th symbol in ELF is fake.
881 // Otherwise return the terminator.
882 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
883 Symb.d.a = std::numeric_limits<uint32_t>::max();
884 Symb.d.b = std::numeric_limits<uint32_t>::max();
888 Result = SymbolRef(Symb, this);
889 return object_error::success;
893 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
894 StringRef &Result) const {
895 validateSymbol(Symb);
896 const Elf_Sym *symb = getSymbol(Symb);
897 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
901 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
903 bool &IsDefault) const {
904 DataRefImpl Symb = SymRef.getRawDataRefImpl();
905 validateSymbol(Symb);
906 const Elf_Sym *symb = getSymbol(Symb);
907 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
912 ELF::Elf64_Word ELFObjectFile<ELFT>
913 ::getSymbolTableIndex(const Elf_Sym *symb) const {
914 if (symb->st_shndx == ELF::SHN_XINDEX)
915 return ExtendedSymbolTable.lookup(symb);
916 return symb->st_shndx;
920 const typename ELFObjectFile<ELFT>::Elf_Shdr *
921 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
922 if (symb->st_shndx == ELF::SHN_XINDEX)
923 return getSection(ExtendedSymbolTable.lookup(symb));
924 if (symb->st_shndx >= ELF::SHN_LORESERVE)
926 return getSection(symb->st_shndx);
930 const typename ELFObjectFile<ELFT>::Elf_Shdr *
931 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
932 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
933 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
937 const typename ELFObjectFile<ELFT>::Elf_Sym *
938 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
939 return getSymbol(It->getRawDataRefImpl());
943 const typename ELFObjectFile<ELFT>::Elf_Sym *
944 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
945 DataRefImpl SymbolData;
946 SymbolData.d.a = index;
948 return getSymbol(SymbolData);
952 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
953 uint64_t &Result) const {
954 validateSymbol(Symb);
955 const Elf_Sym *symb = getSymbol(Symb);
956 const Elf_Shdr *Section;
957 switch (getSymbolTableIndex(symb)) {
958 case ELF::SHN_COMMON:
959 // Unintialized symbols have no offset in the object file
961 Result = UnknownAddressOrSize;
962 return object_error::success;
964 Result = symb->st_value;
965 return object_error::success;
966 default: Section = getSection(symb);
969 switch (symb->getType()) {
970 case ELF::STT_SECTION:
971 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
972 return object_error::success;
974 case ELF::STT_OBJECT:
975 case ELF::STT_NOTYPE:
976 Result = symb->st_value +
977 (Section ? Section->sh_offset : 0);
978 return object_error::success;
980 Result = UnknownAddressOrSize;
981 return object_error::success;
986 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
987 uint64_t &Result) const {
988 validateSymbol(Symb);
989 const Elf_Sym *symb = getSymbol(Symb);
990 const Elf_Shdr *Section;
991 switch (getSymbolTableIndex(symb)) {
992 case ELF::SHN_COMMON:
994 Result = UnknownAddressOrSize;
995 return object_error::success;
997 Result = symb->st_value;
998 return object_error::success;
999 default: Section = getSection(symb);
1002 switch (symb->getType()) {
1003 case ELF::STT_SECTION:
1004 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1005 return object_error::success;
1007 case ELF::STT_OBJECT:
1008 case ELF::STT_NOTYPE:
1010 switch(Header->e_type) {
1013 IsRelocatable = false;
1016 IsRelocatable = true;
1018 Result = symb->st_value;
1019 if (IsRelocatable && Section != 0)
1020 Result += Section->sh_addr;
1021 return object_error::success;
1023 Result = UnknownAddressOrSize;
1024 return object_error::success;
1028 template<class ELFT>
1029 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1030 uint64_t &Result) const {
1031 validateSymbol(Symb);
1032 const Elf_Sym *symb = getSymbol(Symb);
1033 if (symb->st_size == 0)
1034 Result = UnknownAddressOrSize;
1035 Result = symb->st_size;
1036 return object_error::success;
1039 template<class ELFT>
1040 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1041 char &Result) const {
1042 validateSymbol(Symb);
1043 const Elf_Sym *symb = getSymbol(Symb);
1044 const Elf_Shdr *Section = getSection(symb);
1049 switch (Section->sh_type) {
1050 case ELF::SHT_PROGBITS:
1051 case ELF::SHT_DYNAMIC:
1052 switch (Section->sh_flags) {
1053 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1055 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1057 case ELF::SHF_ALLOC:
1058 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1059 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1063 case ELF::SHT_NOBITS: ret = 'b';
1067 switch (getSymbolTableIndex(symb)) {
1068 case ELF::SHN_UNDEF:
1072 case ELF::SHN_ABS: ret = 'a'; break;
1073 case ELF::SHN_COMMON: ret = 'c'; break;
1076 switch (symb->getBinding()) {
1077 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1079 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1082 if (symb->getType() == ELF::STT_OBJECT)
1088 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1090 if (error_code ec = getSymbolName(Symb, name))
1092 Result = StringSwitch<char>(name)
1093 .StartsWith(".debug", 'N')
1094 .StartsWith(".note", 'n')
1096 return object_error::success;
1100 return object_error::success;
1103 template<class ELFT>
1104 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1105 SymbolRef::Type &Result) const {
1106 validateSymbol(Symb);
1107 const Elf_Sym *symb = getSymbol(Symb);
1109 switch (symb->getType()) {
1110 case ELF::STT_NOTYPE:
1111 Result = SymbolRef::ST_Unknown;
1113 case ELF::STT_SECTION:
1114 Result = SymbolRef::ST_Debug;
1117 Result = SymbolRef::ST_File;
1120 Result = SymbolRef::ST_Function;
1122 case ELF::STT_OBJECT:
1123 case ELF::STT_COMMON:
1125 Result = SymbolRef::ST_Data;
1128 Result = SymbolRef::ST_Other;
1131 return object_error::success;
1134 template<class ELFT>
1135 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1136 uint32_t &Result) const {
1137 validateSymbol(Symb);
1138 const Elf_Sym *symb = getSymbol(Symb);
1140 Result = SymbolRef::SF_None;
1142 if (symb->getBinding() != ELF::STB_LOCAL)
1143 Result |= SymbolRef::SF_Global;
1145 if (symb->getBinding() == ELF::STB_WEAK)
1146 Result |= SymbolRef::SF_Weak;
1148 if (symb->st_shndx == ELF::SHN_ABS)
1149 Result |= SymbolRef::SF_Absolute;
1151 if (symb->getType() == ELF::STT_FILE ||
1152 symb->getType() == ELF::STT_SECTION)
1153 Result |= SymbolRef::SF_FormatSpecific;
1155 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1156 Result |= SymbolRef::SF_Undefined;
1158 if (symb->getType() == ELF::STT_COMMON ||
1159 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1160 Result |= SymbolRef::SF_Common;
1162 if (symb->getType() == ELF::STT_TLS)
1163 Result |= SymbolRef::SF_ThreadLocal;
1165 return object_error::success;
1168 template<class ELFT>
1169 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1170 section_iterator &Res) const {
1171 validateSymbol(Symb);
1172 const Elf_Sym *symb = getSymbol(Symb);
1173 const Elf_Shdr *sec = getSection(symb);
1175 Res = end_sections();
1178 Sec.p = reinterpret_cast<intptr_t>(sec);
1179 Res = section_iterator(SectionRef(Sec, this));
1181 return object_error::success;
1184 template<class ELFT>
1185 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1186 uint64_t &Val) const {
1187 validateSymbol(Symb);
1188 const Elf_Sym *symb = getSymbol(Symb);
1189 Val = symb->st_value;
1190 return object_error::success;
1193 template<class ELFT>
1194 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1195 SectionRef &Result) const {
1196 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1197 sec += Header->e_shentsize;
1198 Sec.p = reinterpret_cast<intptr_t>(sec);
1199 Result = SectionRef(Sec, this);
1200 return object_error::success;
1203 template<class ELFT>
1204 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1205 StringRef &Result) const {
1206 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1207 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1208 return object_error::success;
1211 template<class ELFT>
1212 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1213 uint64_t &Result) const {
1214 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1215 Result = sec->sh_addr;
1216 return object_error::success;
1219 template<class ELFT>
1220 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1221 uint64_t &Result) const {
1222 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1223 Result = sec->sh_size;
1224 return object_error::success;
1227 template<class ELFT>
1228 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1229 StringRef &Result) const {
1230 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1231 const char *start = (const char*)base() + sec->sh_offset;
1232 Result = StringRef(start, sec->sh_size);
1233 return object_error::success;
1236 template<class ELFT>
1237 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1238 StringRef &Result) const {
1239 const char *start = (const char*)base() + Sec->sh_offset;
1240 Result = StringRef(start, Sec->sh_size);
1241 return object_error::success;
1244 template<class ELFT>
1245 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1246 uint64_t &Result) const {
1247 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1248 Result = sec->sh_addralign;
1249 return object_error::success;
1252 template<class ELFT>
1253 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1254 bool &Result) const {
1255 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1256 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1260 return object_error::success;
1263 template<class ELFT>
1264 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1265 bool &Result) const {
1266 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1267 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1268 && sec->sh_type == ELF::SHT_PROGBITS)
1272 return object_error::success;
1275 template<class ELFT>
1276 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1277 bool &Result) const {
1278 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1279 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1280 && sec->sh_type == ELF::SHT_NOBITS)
1284 return object_error::success;
1287 template<class ELFT>
1288 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1289 DataRefImpl Sec, bool &Result) const {
1290 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1291 if (sec->sh_flags & ELF::SHF_ALLOC)
1295 return object_error::success;
1298 template<class ELFT>
1299 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1300 bool &Result) const {
1301 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1302 if (sec->sh_type == ELF::SHT_NOBITS)
1306 return object_error::success;
1309 template<class ELFT>
1310 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1311 bool &Result) const {
1312 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1313 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1314 // in the object image) and vice versa.
1315 Result = sec->sh_type == ELF::SHT_NOBITS;
1316 return object_error::success;
1319 template<class ELFT>
1320 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1321 bool &Result) const {
1322 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1323 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1327 return object_error::success;
1330 template<class ELFT>
1331 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1333 bool &Result) const {
1334 // FIXME: Unimplemented.
1336 return object_error::success;
1339 template<class ELFT>
1341 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1342 DataRefImpl RelData;
1343 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1344 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1345 if (sec != 0 && ittr != SectionRelocMap.end()) {
1346 RelData.w.a = getSection(ittr->second[0])->sh_info;
1347 RelData.w.b = ittr->second[0];
1350 return relocation_iterator(RelocationRef(RelData, this));
1353 template<class ELFT>
1355 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1356 DataRefImpl RelData;
1357 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1358 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1359 if (sec != 0 && ittr != SectionRelocMap.end()) {
1360 // Get the index of the last relocation section for this section.
1361 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1362 const Elf_Shdr *relocsec = getSection(relocsecindex);
1363 RelData.w.a = relocsec->sh_info;
1364 RelData.w.b = relocsecindex;
1365 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1367 return relocation_iterator(RelocationRef(RelData, this));
1371 template<class ELFT>
1372 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1373 RelocationRef &Result) const {
1375 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1376 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1377 // We have reached the end of the relocations for this section. See if there
1378 // is another relocation section.
1379 typename RelocMap_t::mapped_type relocseclist =
1380 SectionRelocMap.lookup(getSection(Rel.w.a));
1382 // Do a binary search for the current reloc section index (which must be
1383 // present). Then get the next one.
1384 typename RelocMap_t::mapped_type::const_iterator loc =
1385 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1388 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1389 // to the end iterator.
1390 if (loc != relocseclist.end()) {
1395 Result = RelocationRef(Rel, this);
1396 return object_error::success;
1399 template<class ELFT>
1400 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1401 SymbolRef &Result) const {
1403 const Elf_Shdr *sec = getSection(Rel.w.b);
1404 switch (sec->sh_type) {
1406 report_fatal_error("Invalid section type in Rel!");
1407 case ELF::SHT_REL : {
1408 symbolIdx = getRel(Rel)->getSymbol();
1411 case ELF::SHT_RELA : {
1412 symbolIdx = getRela(Rel)->getSymbol();
1416 DataRefImpl SymbolData;
1417 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1418 if (it == SymbolTableSectionsIndexMap.end())
1419 report_fatal_error("Relocation symbol table not found!");
1420 SymbolData.d.a = symbolIdx;
1421 SymbolData.d.b = it->second;
1422 Result = SymbolRef(SymbolData, this);
1423 return object_error::success;
1426 template<class ELFT>
1427 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1428 uint64_t &Result) const {
1430 const Elf_Shdr *sec = getSection(Rel.w.b);
1431 switch (sec->sh_type) {
1433 report_fatal_error("Invalid section type in Rel!");
1434 case ELF::SHT_REL : {
1435 offset = getRel(Rel)->r_offset;
1438 case ELF::SHT_RELA : {
1439 offset = getRela(Rel)->r_offset;
1445 return object_error::success;
1448 template<class ELFT>
1449 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1450 uint64_t &Result) const {
1452 const Elf_Shdr *sec = getSection(Rel.w.b);
1453 switch (sec->sh_type) {
1455 report_fatal_error("Invalid section type in Rel!");
1456 case ELF::SHT_REL : {
1457 offset = getRel(Rel)->r_offset;
1460 case ELF::SHT_RELA : {
1461 offset = getRela(Rel)->r_offset;
1466 Result = offset - sec->sh_addr;
1467 return object_error::success;
1470 template<class ELFT>
1471 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1472 uint64_t &Result) const {
1473 const Elf_Shdr *sec = getSection(Rel.w.b);
1474 switch (sec->sh_type) {
1476 report_fatal_error("Invalid section type in Rel!");
1477 case ELF::SHT_REL : {
1478 Result = getRel(Rel)->getType();
1481 case ELF::SHT_RELA : {
1482 Result = getRela(Rel)->getType();
1486 return object_error::success;
1489 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1490 case ELF::enum: res = #enum; break;
1492 template<class ELFT>
1493 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1494 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1495 const Elf_Shdr *sec = getSection(Rel.w.b);
1498 switch (sec->sh_type) {
1500 return object_error::parse_failed;
1501 case ELF::SHT_REL : {
1502 type = getRel(Rel)->getType();
1505 case ELF::SHT_RELA : {
1506 type = getRela(Rel)->getType();
1510 switch (Header->e_machine) {
1511 case ELF::EM_X86_64:
1513 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1514 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1515 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1516 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1517 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1518 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1519 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1520 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1521 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1522 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1523 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1524 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1525 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1526 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1527 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1528 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1529 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1530 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1531 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1532 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1533 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1534 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1535 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1536 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1537 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1538 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1539 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1540 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1541 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1542 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1543 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1544 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1551 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1552 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1553 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1554 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1555 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1556 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1557 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1558 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1559 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1560 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1561 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1562 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1563 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1564 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1565 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1566 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1567 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1595 case ELF::EM_AARCH64:
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1812 case ELF::EM_HEXAGON:
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
1907 Result.append(res.begin(), res.end());
1908 return object_error::success;
1911 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
1913 template<class ELFT>
1914 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
1915 DataRefImpl Rel, int64_t &Result) const {
1916 const Elf_Shdr *sec = getSection(Rel.w.b);
1917 switch (sec->sh_type) {
1919 report_fatal_error("Invalid section type in Rel!");
1920 case ELF::SHT_REL : {
1922 return object_error::success;
1924 case ELF::SHT_RELA : {
1925 Result = getRela(Rel)->r_addend;
1926 return object_error::success;
1931 template<class ELFT>
1932 error_code ELFObjectFile<ELFT>::getRelocationValueString(
1933 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1934 const Elf_Shdr *sec = getSection(Rel.w.b);
1938 uint16_t symbol_index = 0;
1939 switch (sec->sh_type) {
1941 return object_error::parse_failed;
1942 case ELF::SHT_REL: {
1943 type = getRel(Rel)->getType();
1944 symbol_index = getRel(Rel)->getSymbol();
1945 // TODO: Read implicit addend from section data.
1948 case ELF::SHT_RELA: {
1949 type = getRela(Rel)->getType();
1950 symbol_index = getRela(Rel)->getSymbol();
1951 addend = getRela(Rel)->r_addend;
1955 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
1957 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
1959 switch (Header->e_machine) {
1960 case ELF::EM_X86_64:
1962 case ELF::R_X86_64_PC8:
1963 case ELF::R_X86_64_PC16:
1964 case ELF::R_X86_64_PC32: {
1966 raw_string_ostream fmt(fmtbuf);
1967 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
1969 Result.append(fmtbuf.begin(), fmtbuf.end());
1972 case ELF::R_X86_64_8:
1973 case ELF::R_X86_64_16:
1974 case ELF::R_X86_64_32:
1975 case ELF::R_X86_64_32S:
1976 case ELF::R_X86_64_64: {
1978 raw_string_ostream fmt(fmtbuf);
1979 fmt << symname << (addend < 0 ? "" : "+") << addend;
1981 Result.append(fmtbuf.begin(), fmtbuf.end());
1988 case ELF::EM_AARCH64:
1990 case ELF::EM_HEXAGON:
1997 Result.append(res.begin(), res.end());
1998 return object_error::success;
2001 // Verify that the last byte in the string table in a null.
2002 template<class ELFT>
2003 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2004 const char *strtab = (const char*)base() + sh->sh_offset;
2005 if (strtab[sh->sh_size - 1] != 0)
2006 // FIXME: Proper error handling.
2007 report_fatal_error("String table must end with a null terminator!");
2010 template<class ELFT>
2011 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2012 : ObjectFile(getELFType(
2013 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2017 , isDyldELFObject(false)
2018 , SectionHeaderTable(0)
2019 , dot_shstrtab_sec(0)
2022 , dot_dynamic_sec(0)
2023 , dot_gnu_version_sec(0)
2024 , dot_gnu_version_r_sec(0)
2025 , dot_gnu_version_d_sec(0)
2029 const uint64_t FileSize = Data->getBufferSize();
2031 if (sizeof(Elf_Ehdr) > FileSize)
2032 // FIXME: Proper error handling.
2033 report_fatal_error("File too short!");
2035 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2037 if (Header->e_shoff == 0)
2040 const uint64_t SectionTableOffset = Header->e_shoff;
2042 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2043 // FIXME: Proper error handling.
2044 report_fatal_error("Section header table goes past end of file!");
2046 // The getNumSections() call below depends on SectionHeaderTable being set.
2047 SectionHeaderTable =
2048 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2049 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2051 if (SectionTableOffset + SectionTableSize > FileSize)
2052 // FIXME: Proper error handling.
2053 report_fatal_error("Section table goes past end of file!");
2055 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2056 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2057 const Elf_Shdr* sh = SectionHeaderTable;
2059 // Reserve SymbolTableSections[0] for .dynsym
2060 SymbolTableSections.push_back(NULL);
2062 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2063 switch (sh->sh_type) {
2064 case ELF::SHT_SYMTAB_SHNDX: {
2065 if (SymbolTableSectionHeaderIndex)
2066 // FIXME: Proper error handling.
2067 report_fatal_error("More than one .symtab_shndx!");
2068 SymbolTableSectionHeaderIndex = sh;
2071 case ELF::SHT_SYMTAB: {
2072 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2073 SymbolTableSections.push_back(sh);
2076 case ELF::SHT_DYNSYM: {
2077 if (SymbolTableSections[0] != NULL)
2078 // FIXME: Proper error handling.
2079 report_fatal_error("More than one .dynsym!");
2080 SymbolTableSectionsIndexMap[i] = 0;
2081 SymbolTableSections[0] = sh;
2085 case ELF::SHT_RELA: {
2086 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2089 case ELF::SHT_DYNAMIC: {
2090 if (dot_dynamic_sec != NULL)
2091 // FIXME: Proper error handling.
2092 report_fatal_error("More than one .dynamic!");
2093 dot_dynamic_sec = sh;
2096 case ELF::SHT_GNU_versym: {
2097 if (dot_gnu_version_sec != NULL)
2098 // FIXME: Proper error handling.
2099 report_fatal_error("More than one .gnu.version section!");
2100 dot_gnu_version_sec = sh;
2103 case ELF::SHT_GNU_verdef: {
2104 if (dot_gnu_version_d_sec != NULL)
2105 // FIXME: Proper error handling.
2106 report_fatal_error("More than one .gnu.version_d section!");
2107 dot_gnu_version_d_sec = sh;
2110 case ELF::SHT_GNU_verneed: {
2111 if (dot_gnu_version_r_sec != NULL)
2112 // FIXME: Proper error handling.
2113 report_fatal_error("More than one .gnu.version_r section!");
2114 dot_gnu_version_r_sec = sh;
2121 // Sort section relocation lists by index.
2122 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2123 e = SectionRelocMap.end(); i != e; ++i) {
2124 std::sort(i->second.begin(), i->second.end());
2127 // Get string table sections.
2128 dot_shstrtab_sec = getSection(getStringTableIndex());
2129 if (dot_shstrtab_sec) {
2130 // Verify that the last byte in the string table in a null.
2131 VerifyStrTab(dot_shstrtab_sec);
2134 // Merge this into the above loop.
2135 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2136 *e = i + getNumSections() * Header->e_shentsize;
2137 i != e; i += Header->e_shentsize) {
2138 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2139 if (sh->sh_type == ELF::SHT_STRTAB) {
2140 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2141 if (SectionName == ".strtab") {
2142 if (dot_strtab_sec != 0)
2143 // FIXME: Proper error handling.
2144 report_fatal_error("Already found section named .strtab!");
2145 dot_strtab_sec = sh;
2146 VerifyStrTab(dot_strtab_sec);
2147 } else if (SectionName == ".dynstr") {
2148 if (dot_dynstr_sec != 0)
2149 // FIXME: Proper error handling.
2150 report_fatal_error("Already found section named .dynstr!");
2151 dot_dynstr_sec = sh;
2152 VerifyStrTab(dot_dynstr_sec);
2157 // Build symbol name side-mapping if there is one.
2158 if (SymbolTableSectionHeaderIndex) {
2159 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2160 SymbolTableSectionHeaderIndex->sh_offset);
2162 for (symbol_iterator si = begin_symbols(),
2163 se = end_symbols(); si != se; si.increment(ec)) {
2165 report_fatal_error("Fewer extended symbol table entries than symbols!");
2166 if (*ShndxTable != ELF::SHN_UNDEF)
2167 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2173 // Get the symbol table index in the symtab section given a symbol
2174 template<class ELFT>
2175 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2176 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2177 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2178 uintptr_t SymLoc = uintptr_t(Sym);
2179 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2180 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2181 uint64_t SymOffset = SymLoc - SymTabLoc;
2182 assert(SymOffset % SymTab->sh_entsize == 0 &&
2183 "Symbol not multiple of symbol size!");
2184 return SymOffset / SymTab->sh_entsize;
2187 template<class ELFT>
2188 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2189 DataRefImpl SymbolData;
2190 if (SymbolTableSections.size() <= 1) {
2191 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2192 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2194 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2195 SymbolData.d.b = 1; // The 0th table is .dynsym
2197 return symbol_iterator(SymbolRef(SymbolData, this));
2200 template<class ELFT>
2201 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2202 DataRefImpl SymbolData;
2203 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2204 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2205 return symbol_iterator(SymbolRef(SymbolData, this));
2208 template<class ELFT>
2209 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2210 DataRefImpl SymbolData;
2211 if (SymbolTableSections[0] == NULL) {
2212 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2213 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2215 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2216 SymbolData.d.b = 0; // The 0th table is .dynsym
2218 return symbol_iterator(SymbolRef(SymbolData, this));
2221 template<class ELFT>
2222 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2223 DataRefImpl SymbolData;
2224 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2225 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2226 return symbol_iterator(SymbolRef(SymbolData, this));
2229 template<class ELFT>
2230 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2232 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2233 return section_iterator(SectionRef(ret, this));
2236 template<class ELFT>
2237 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2239 ret.p = reinterpret_cast<intptr_t>(base()
2241 + (Header->e_shentsize*getNumSections()));
2242 return section_iterator(SectionRef(ret, this));
2245 template<class ELFT>
2246 typename ELFObjectFile<ELFT>::dyn_iterator
2247 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2248 if (dot_dynamic_sec)
2249 return dyn_iterator(dot_dynamic_sec->sh_entsize, (const char *)base() + dot_dynamic_sec->sh_offset);
2250 return dyn_iterator(0, 0);
2253 template<class ELFT>
2254 typename ELFObjectFile<ELFT>::dyn_iterator
2255 ELFObjectFile<ELFT>::end_dynamic_table() const {
2256 if (dot_dynamic_sec)
2257 return dyn_iterator(dot_dynamic_sec->sh_entsize, (const char *)base() + dot_dynamic_sec->sh_offset + dot_dynamic_sec->sh_size);
2258 return dyn_iterator(0, 0);
2261 template<class ELFT>
2262 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2264 // Find the DT_SONAME entry
2265 dyn_iterator it = begin_dynamic_table();
2266 dyn_iterator ie = end_dynamic_table();
2267 for (; it != ie; ++it) {
2268 if (it->getTag() == ELF::DT_SONAME)
2272 if (dot_dynstr_sec == NULL)
2273 report_fatal_error("Dynamic string table is missing");
2274 dt_soname = getString(dot_dynstr_sec, it->getVal());
2282 template<class ELFT>
2283 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2284 // Find the first DT_NEEDED entry
2285 dyn_iterator i = begin_dynamic_table();
2286 dyn_iterator e = end_dynamic_table();
2288 if (i->getTag() == ELF::DT_NEEDED)
2293 DRI.p = reinterpret_cast<uintptr_t>(&*i);
2294 return library_iterator(LibraryRef(DRI, this));
2297 template<class ELFT>
2298 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2299 LibraryRef &Result) const {
2300 // Use the same DataRefImpl format as DynRef.
2301 dyn_iterator i = dyn_iterator(dot_dynamic_sec->sh_entsize, reinterpret_cast<const char *>(Data.p));
2302 dyn_iterator e = end_dynamic_table();
2304 // Skip the current dynamic table entry.
2307 // Find the next DT_NEEDED entry.
2308 for (; i != e && i->getTag() != ELF::DT_NEEDED; ++i);
2311 DRI.p = reinterpret_cast<uintptr_t>(&*i);
2312 Result = LibraryRef(DRI, this);
2313 return object_error::success;
2316 template<class ELFT>
2317 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2318 StringRef &Res) const {
2319 dyn_iterator i = dyn_iterator(dot_dynamic_sec->sh_entsize, reinterpret_cast<const char *>(Data.p));
2320 if (i == end_dynamic_table())
2321 report_fatal_error("getLibraryPath() called on iterator end");
2323 if (i->getTag() != ELF::DT_NEEDED)
2324 report_fatal_error("Invalid library_iterator");
2326 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2327 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2328 // the time, but the specification allows exceptions.
2329 // TODO: This should really use DT_STRTAB instead. Doing this requires
2330 // reading the program headers.
2331 if (dot_dynstr_sec == NULL)
2332 report_fatal_error("Dynamic string table is missing");
2333 Res = getString(dot_dynstr_sec, i->getVal());
2334 return object_error::success;
2337 template<class ELFT>
2338 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2339 dyn_iterator e = end_dynamic_table();
2341 DRI.p = reinterpret_cast<uintptr_t>(&*e);
2342 return library_iterator(LibraryRef(DRI, this));
2345 template<class ELFT>
2346 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2347 return ELFT::Is64Bits ? 8 : 4;
2350 template<class ELFT>
2351 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2352 switch(Header->e_ident[ELF::EI_CLASS]) {
2353 case ELF::ELFCLASS32:
2354 switch(Header->e_machine) {
2356 return "ELF32-i386";
2357 case ELF::EM_X86_64:
2358 return "ELF32-x86-64";
2361 case ELF::EM_HEXAGON:
2362 return "ELF32-hexagon";
2364 return "ELF32-mips";
2366 return "ELF32-unknown";
2368 case ELF::ELFCLASS64:
2369 switch(Header->e_machine) {
2371 return "ELF64-i386";
2372 case ELF::EM_X86_64:
2373 return "ELF64-x86-64";
2374 case ELF::EM_AARCH64:
2375 return "ELF64-aarch64";
2377 return "ELF64-ppc64";
2379 return "ELF64-unknown";
2382 // FIXME: Proper error handling.
2383 report_fatal_error("Invalid ELFCLASS!");
2387 template<class ELFT>
2388 unsigned ELFObjectFile<ELFT>::getArch() const {
2389 switch(Header->e_machine) {
2392 case ELF::EM_X86_64:
2393 return Triple::x86_64;
2394 case ELF::EM_AARCH64:
2395 return Triple::aarch64;
2398 case ELF::EM_HEXAGON:
2399 return Triple::hexagon;
2401 return (ELFT::TargetEndianness == support::little) ?
2402 Triple::mipsel : Triple::mips;
2404 return Triple::ppc64;
2406 return Triple::UnknownArch;
2410 template<class ELFT>
2411 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2412 assert(Header && "Header not initialized!");
2413 if (Header->e_shnum == ELF::SHN_UNDEF) {
2414 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2415 return SectionHeaderTable->sh_size;
2417 return Header->e_shnum;
2420 template<class ELFT>
2422 ELFObjectFile<ELFT>::getStringTableIndex() const {
2423 if (Header->e_shnum == ELF::SHN_UNDEF) {
2424 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2425 return SectionHeaderTable->sh_link;
2426 if (Header->e_shstrndx >= getNumSections())
2429 return Header->e_shstrndx;
2432 template<class ELFT>
2433 template<typename T>
2435 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2436 return getEntry<T>(getSection(Section), Entry);
2439 template<class ELFT>
2440 template<typename T>
2442 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2443 return reinterpret_cast<const T *>(
2445 + Section->sh_offset
2446 + (Entry * Section->sh_entsize));
2449 template<class ELFT>
2450 const typename ELFObjectFile<ELFT>::Elf_Sym *
2451 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2452 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2455 template<class ELFT>
2456 const typename ELFObjectFile<ELFT>::Elf_Rel *
2457 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2458 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2461 template<class ELFT>
2462 const typename ELFObjectFile<ELFT>::Elf_Rela *
2463 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2464 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2467 template<class ELFT>
2468 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2469 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2470 const Elf_Shdr *sec = getSection(Symb.d.b);
2471 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2472 // FIXME: Proper error handling.
2473 report_fatal_error("Invalid symbol table section!");
2477 template<class ELFT>
2478 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2479 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2482 if (!SectionHeaderTable || index >= getNumSections())
2483 // FIXME: Proper error handling.
2484 report_fatal_error("Invalid section index!");
2486 return reinterpret_cast<const Elf_Shdr *>(
2487 reinterpret_cast<const char *>(SectionHeaderTable)
2488 + (index * Header->e_shentsize));
2491 template<class ELFT>
2492 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2493 ELF::Elf32_Word offset) const {
2494 return getString(getSection(section), offset);
2497 template<class ELFT>
2498 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2499 ELF::Elf32_Word offset) const {
2500 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2501 if (offset >= section->sh_size)
2502 // FIXME: Proper error handling.
2503 report_fatal_error("Symbol name offset outside of string table!");
2504 return (const char *)base() + section->sh_offset + offset;
2507 template<class ELFT>
2508 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2509 const Elf_Sym *symb,
2510 StringRef &Result) const {
2511 if (symb->st_name == 0) {
2512 const Elf_Shdr *section = getSection(symb);
2516 Result = getString(dot_shstrtab_sec, section->sh_name);
2517 return object_error::success;
2520 if (section == SymbolTableSections[0]) {
2521 // Symbol is in .dynsym, use .dynstr string table
2522 Result = getString(dot_dynstr_sec, symb->st_name);
2524 // Use the default symbol table name section.
2525 Result = getString(dot_strtab_sec, symb->st_name);
2527 return object_error::success;
2530 template<class ELFT>
2531 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2532 StringRef &Result) const {
2533 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2534 return object_error::success;
2537 template<class ELFT>
2538 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2539 const Elf_Sym *symb,
2541 bool &IsDefault) const {
2542 // Handle non-dynamic symbols.
2543 if (section != SymbolTableSections[0]) {
2544 // Non-dynamic symbols can have versions in their names
2545 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2546 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2548 error_code ec = getSymbolName(section, symb, Name);
2549 if (ec != object_error::success)
2551 size_t atpos = Name.find('@');
2552 if (atpos == StringRef::npos) {
2555 return object_error::success;
2558 if (atpos < Name.size() && Name[atpos] == '@') {
2564 Version = Name.substr(atpos);
2565 return object_error::success;
2568 // This is a dynamic symbol. Look in the GNU symbol version table.
2569 if (dot_gnu_version_sec == NULL) {
2570 // No version table.
2573 return object_error::success;
2576 // Determine the position in the symbol table of this entry.
2577 const char *sec_start = (const char*)base() + section->sh_offset;
2578 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2580 // Get the corresponding version index entry
2581 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2582 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2584 // Special markers for unversioned symbols.
2585 if (version_index == ELF::VER_NDX_LOCAL ||
2586 version_index == ELF::VER_NDX_GLOBAL) {
2589 return object_error::success;
2592 // Lookup this symbol in the version table
2594 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2595 report_fatal_error("Symbol has version index without corresponding "
2596 "define or reference entry");
2597 const VersionMapEntry &entry = VersionMap[version_index];
2599 // Get the version name string
2601 if (entry.isVerdef()) {
2602 // The first Verdaux entry holds the name.
2603 name_offset = entry.getVerdef()->getAux()->vda_name;
2605 name_offset = entry.getVernaux()->vna_name;
2607 Version = getString(dot_dynstr_sec, name_offset);
2610 if (entry.isVerdef()) {
2611 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2616 return object_error::success;
2619 /// This is a generic interface for retrieving GNU symbol version
2620 /// information from an ELFObjectFile.
2621 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2622 const SymbolRef &Sym,
2625 // Little-endian 32-bit
2626 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2627 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2628 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2630 // Big-endian 32-bit
2631 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2632 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2633 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2635 // Little-endian 64-bit
2636 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2637 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2638 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2640 // Big-endian 64-bit
2641 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2642 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2643 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2645 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");