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;
516 const char *get() const { return Current; }
519 const uint64_t EntitySize;
523 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
524 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
525 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
526 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
527 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
528 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
529 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
530 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
531 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
532 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
533 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
534 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
535 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
536 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
537 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
538 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
541 // This flag is used for classof, to distinguish ELFObjectFile from
542 // its subclass. If more subclasses will be created, this flag will
543 // have to become an enum.
544 bool isDyldELFObject;
547 typedef SmallVector<const Elf_Shdr *, 2> Sections_t;
548 typedef DenseMap<unsigned, unsigned> IndexMap_t;
549 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
551 const Elf_Ehdr *Header;
552 const Elf_Shdr *SectionHeaderTable;
553 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
554 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
555 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
557 // SymbolTableSections[0] always points to the dynamic string table section
558 // header, or NULL if there is no dynamic string table.
559 Sections_t SymbolTableSections;
560 IndexMap_t SymbolTableSectionsIndexMap;
561 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
563 const Elf_Shdr *dot_dynamic_sec; // .dynamic
564 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
565 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
566 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
568 // Pointer to SONAME entry in dynamic string table
569 // This is set the first time getLoadName is called.
570 mutable const char *dt_soname;
573 // Records for each version index the corresponding Verdef or Vernaux entry.
574 // This is filled the first time LoadVersionMap() is called.
575 class VersionMapEntry : public PointerIntPair<const void*, 1> {
577 // If the integer is 0, this is an Elf_Verdef*.
578 // If the integer is 1, this is an Elf_Vernaux*.
579 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
580 VersionMapEntry(const Elf_Verdef *verdef)
581 : PointerIntPair<const void*, 1>(verdef, 0) { }
582 VersionMapEntry(const Elf_Vernaux *vernaux)
583 : PointerIntPair<const void*, 1>(vernaux, 1) { }
584 bool isNull() const { return getPointer() == NULL; }
585 bool isVerdef() const { return !isNull() && getInt() == 0; }
586 bool isVernaux() const { return !isNull() && getInt() == 1; }
587 const Elf_Verdef *getVerdef() const {
588 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
590 const Elf_Vernaux *getVernaux() const {
591 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
594 mutable SmallVector<VersionMapEntry, 16> VersionMap;
595 void LoadVersionDefs(const Elf_Shdr *sec) const;
596 void LoadVersionNeeds(const Elf_Shdr *ec) const;
597 void LoadVersionMap() const;
599 /// @brief Map sections to an array of relocation sections that reference
600 /// them sorted by section index.
601 RelocMap_t SectionRelocMap;
603 /// @brief Get the relocation section that contains \a Rel.
604 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
605 return getSection(Rel.w.b);
608 bool isRelocationHasAddend(DataRefImpl Rel) const;
610 const T *getEntry(uint16_t Section, uint32_t Entry) const;
612 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
613 const Elf_Shdr *getSection(DataRefImpl index) const;
614 const Elf_Shdr *getSection(uint32_t index) const;
615 const Elf_Rel *getRel(DataRefImpl Rel) const;
616 const Elf_Rela *getRela(DataRefImpl Rela) const;
617 const char *getString(uint32_t section, uint32_t offset) const;
618 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
619 error_code getSymbolVersion(const Elf_Shdr *section,
622 bool &IsDefault) const;
623 void VerifyStrTab(const Elf_Shdr *sh) const;
626 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
627 void validateSymbol(DataRefImpl Symb) const;
630 error_code getSymbolName(const Elf_Shdr *section,
632 StringRef &Res) const;
633 error_code getSectionName(const Elf_Shdr *section,
634 StringRef &Res) const;
635 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
636 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
637 bool &IsDefault) const;
638 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
640 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
641 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
642 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
643 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
644 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
645 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
646 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
647 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
648 virtual error_code getSymbolSection(DataRefImpl Symb,
649 section_iterator &Res) const;
650 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
652 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
653 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
655 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
656 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
657 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
658 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
659 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
660 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
661 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
662 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
663 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
664 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
666 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
667 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
668 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
669 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
671 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
672 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
674 virtual error_code getRelocationNext(DataRefImpl Rel,
675 RelocationRef &Res) const;
676 virtual error_code getRelocationAddress(DataRefImpl Rel,
677 uint64_t &Res) const;
678 virtual error_code getRelocationOffset(DataRefImpl Rel,
679 uint64_t &Res) const;
680 virtual error_code getRelocationSymbol(DataRefImpl Rel,
681 SymbolRef &Res) const;
682 virtual error_code getRelocationType(DataRefImpl Rel,
683 uint64_t &Res) const;
684 virtual error_code getRelocationTypeName(DataRefImpl Rel,
685 SmallVectorImpl<char> &Result) const;
686 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
688 virtual error_code getRelocationValueString(DataRefImpl Rel,
689 SmallVectorImpl<char> &Result) const;
692 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
693 virtual symbol_iterator begin_symbols() const;
694 virtual symbol_iterator end_symbols() const;
696 virtual symbol_iterator begin_dynamic_symbols() const;
697 virtual symbol_iterator end_dynamic_symbols() const;
699 virtual section_iterator begin_sections() const;
700 virtual section_iterator end_sections() const;
702 virtual library_iterator begin_libraries_needed() const;
703 virtual library_iterator end_libraries_needed() const;
705 Elf_Dyn_iterator begin_dynamic_table() const;
706 Elf_Dyn_iterator end_dynamic_table() const;
708 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
709 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
711 return Elf_Sym_iterator(DynSymtab->sh_entsize,
712 (const char *)base() + DynSymtab->sh_offset);
713 return Elf_Sym_iterator(0, 0);
716 Elf_Sym_iterator end_elf_dynamic_symbols() const {
717 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
719 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
720 DynSymtab->sh_offset + DynSymtab->sh_size);
721 return Elf_Sym_iterator(0, 0);
724 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
725 return Elf_Rela_Iter(sec->sh_entsize,
726 (const char *)(base() + sec->sh_offset));
729 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
730 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
731 (base() + sec->sh_offset + sec->sh_size));
734 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
735 return Elf_Rel_Iter(sec->sh_entsize,
736 (const char *)(base() + sec->sh_offset));
739 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
740 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
741 (base() + sec->sh_offset + sec->sh_size));
744 /// \brief Iterate over program header table.
745 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
747 Elf_Phdr_Iter begin_program_headers() const {
748 return Elf_Phdr_Iter(Header->e_phentsize,
749 (const char*)base() + Header->e_phoff);
752 Elf_Phdr_Iter end_program_headers() const {
753 return Elf_Phdr_Iter(Header->e_phentsize,
754 (const char*)base() +
756 (Header->e_phnum * Header->e_phentsize));
759 virtual uint8_t getBytesInAddress() const;
760 virtual StringRef getFileFormatName() const;
761 virtual StringRef getObjectType() const { return "ELF"; }
762 virtual unsigned getArch() const;
763 virtual StringRef getLoadName() const;
764 virtual error_code getSectionContents(const Elf_Shdr *sec,
765 StringRef &Res) const;
767 uint64_t getNumSections() const;
768 uint64_t getStringTableIndex() const;
769 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
770 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
771 const Elf_Shdr *getElfSection(section_iterator &It) const;
772 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
773 const Elf_Sym *getElfSymbol(uint32_t index) const;
775 // Methods for type inquiry through isa, cast, and dyn_cast
776 bool isDyldType() const { return isDyldELFObject; }
777 static inline bool classof(const Binary *v) {
778 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
783 // Iterate through the version definitions, and place each Elf_Verdef
784 // in the VersionMap according to its index.
786 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
787 unsigned vd_size = sec->sh_size; // Size of section in bytes
788 unsigned vd_count = sec->sh_info; // Number of Verdef entries
789 const char *sec_start = (const char*)base() + sec->sh_offset;
790 const char *sec_end = sec_start + vd_size;
791 // The first Verdef entry is at the start of the section.
792 const char *p = sec_start;
793 for (unsigned i = 0; i < vd_count; i++) {
794 if (p + sizeof(Elf_Verdef) > sec_end)
795 report_fatal_error("Section ended unexpectedly while scanning "
796 "version definitions.");
797 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
798 if (vd->vd_version != ELF::VER_DEF_CURRENT)
799 report_fatal_error("Unexpected verdef version");
800 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
801 if (index >= VersionMap.size())
802 VersionMap.resize(index+1);
803 VersionMap[index] = VersionMapEntry(vd);
808 // Iterate through the versions needed section, and place each Elf_Vernaux
809 // in the VersionMap according to its index.
811 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
812 unsigned vn_size = sec->sh_size; // Size of section in bytes
813 unsigned vn_count = sec->sh_info; // Number of Verneed entries
814 const char *sec_start = (const char*)base() + sec->sh_offset;
815 const char *sec_end = sec_start + vn_size;
816 // The first Verneed entry is at the start of the section.
817 const char *p = sec_start;
818 for (unsigned i = 0; i < vn_count; i++) {
819 if (p + sizeof(Elf_Verneed) > sec_end)
820 report_fatal_error("Section ended unexpectedly while scanning "
821 "version needed records.");
822 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
823 if (vn->vn_version != ELF::VER_NEED_CURRENT)
824 report_fatal_error("Unexpected verneed version");
825 // Iterate through the Vernaux entries
826 const char *paux = p + vn->vn_aux;
827 for (unsigned j = 0; j < vn->vn_cnt; j++) {
828 if (paux + sizeof(Elf_Vernaux) > sec_end)
829 report_fatal_error("Section ended unexpected while scanning auxiliary "
830 "version needed records.");
831 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
832 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
833 if (index >= VersionMap.size())
834 VersionMap.resize(index+1);
835 VersionMap[index] = VersionMapEntry(vna);
836 paux += vna->vna_next;
843 void ELFObjectFile<ELFT>::LoadVersionMap() const {
844 // If there is no dynamic symtab or version table, there is nothing to do.
845 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
848 // Has the VersionMap already been loaded?
849 if (VersionMap.size() > 0)
852 // The first two version indexes are reserved.
853 // Index 0 is LOCAL, index 1 is GLOBAL.
854 VersionMap.push_back(VersionMapEntry());
855 VersionMap.push_back(VersionMapEntry());
857 if (dot_gnu_version_d_sec)
858 LoadVersionDefs(dot_gnu_version_d_sec);
860 if (dot_gnu_version_r_sec)
861 LoadVersionNeeds(dot_gnu_version_r_sec);
865 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
866 const Elf_Sym *symb = getSymbol(Symb);
867 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
868 // FIXME: We really need to do proper error handling in the case of an invalid
869 // input file. Because we don't use exceptions, I think we'll just pass
870 // an error object around.
872 && SymbolTableSection
873 && symb >= (const Elf_Sym*)(base()
874 + SymbolTableSection->sh_offset)
875 && symb < (const Elf_Sym*)(base()
876 + SymbolTableSection->sh_offset
877 + SymbolTableSection->sh_size)))
878 // FIXME: Proper error handling.
879 report_fatal_error("Symb must point to a valid symbol!");
883 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
884 SymbolRef &Result) const {
885 validateSymbol(Symb);
886 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
889 // Check to see if we are at the end of this symbol table.
890 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
891 // We are at the end. If there are other symbol tables, jump to them.
892 // If the symbol table is .dynsym, we are iterating dynamic symbols,
893 // and there is only one table of these.
896 Symb.d.a = 1; // The 0th symbol in ELF is fake.
898 // Otherwise return the terminator.
899 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
900 Symb.d.a = std::numeric_limits<uint32_t>::max();
901 Symb.d.b = std::numeric_limits<uint32_t>::max();
905 Result = SymbolRef(Symb, this);
906 return object_error::success;
910 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
911 StringRef &Result) const {
912 validateSymbol(Symb);
913 const Elf_Sym *symb = getSymbol(Symb);
914 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
918 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
920 bool &IsDefault) const {
921 DataRefImpl Symb = SymRef.getRawDataRefImpl();
922 validateSymbol(Symb);
923 const Elf_Sym *symb = getSymbol(Symb);
924 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
929 ELF::Elf64_Word ELFObjectFile<ELFT>
930 ::getSymbolTableIndex(const Elf_Sym *symb) const {
931 if (symb->st_shndx == ELF::SHN_XINDEX)
932 return ExtendedSymbolTable.lookup(symb);
933 return symb->st_shndx;
937 const typename ELFObjectFile<ELFT>::Elf_Shdr *
938 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
939 if (symb->st_shndx == ELF::SHN_XINDEX)
940 return getSection(ExtendedSymbolTable.lookup(symb));
941 if (symb->st_shndx >= ELF::SHN_LORESERVE)
943 return getSection(symb->st_shndx);
947 const typename ELFObjectFile<ELFT>::Elf_Shdr *
948 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
949 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
950 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
954 const typename ELFObjectFile<ELFT>::Elf_Sym *
955 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
956 return getSymbol(It->getRawDataRefImpl());
960 const typename ELFObjectFile<ELFT>::Elf_Sym *
961 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
962 DataRefImpl SymbolData;
963 SymbolData.d.a = index;
965 return getSymbol(SymbolData);
969 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
970 uint64_t &Result) const {
971 validateSymbol(Symb);
972 const Elf_Sym *symb = getSymbol(Symb);
973 const Elf_Shdr *Section;
974 switch (getSymbolTableIndex(symb)) {
975 case ELF::SHN_COMMON:
976 // Unintialized symbols have no offset in the object file
978 Result = UnknownAddressOrSize;
979 return object_error::success;
981 Result = symb->st_value;
982 return object_error::success;
983 default: Section = getSection(symb);
986 switch (symb->getType()) {
987 case ELF::STT_SECTION:
988 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
989 return object_error::success;
991 case ELF::STT_OBJECT:
992 case ELF::STT_NOTYPE:
993 Result = symb->st_value +
994 (Section ? Section->sh_offset : 0);
995 return object_error::success;
997 Result = UnknownAddressOrSize;
998 return object_error::success;
1002 template<class ELFT>
1003 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1004 uint64_t &Result) const {
1005 validateSymbol(Symb);
1006 const Elf_Sym *symb = getSymbol(Symb);
1007 const Elf_Shdr *Section;
1008 switch (getSymbolTableIndex(symb)) {
1009 case ELF::SHN_COMMON:
1010 case ELF::SHN_UNDEF:
1011 Result = UnknownAddressOrSize;
1012 return object_error::success;
1014 Result = symb->st_value;
1015 return object_error::success;
1016 default: Section = getSection(symb);
1019 switch (symb->getType()) {
1020 case ELF::STT_SECTION:
1021 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1022 return object_error::success;
1024 case ELF::STT_OBJECT:
1025 case ELF::STT_NOTYPE:
1027 switch(Header->e_type) {
1030 IsRelocatable = false;
1033 IsRelocatable = true;
1035 Result = symb->st_value;
1036 if (IsRelocatable && Section != 0)
1037 Result += Section->sh_addr;
1038 return object_error::success;
1040 Result = UnknownAddressOrSize;
1041 return object_error::success;
1045 template<class ELFT>
1046 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1047 uint64_t &Result) const {
1048 validateSymbol(Symb);
1049 const Elf_Sym *symb = getSymbol(Symb);
1050 if (symb->st_size == 0)
1051 Result = UnknownAddressOrSize;
1052 Result = symb->st_size;
1053 return object_error::success;
1056 template<class ELFT>
1057 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1058 char &Result) const {
1059 validateSymbol(Symb);
1060 const Elf_Sym *symb = getSymbol(Symb);
1061 const Elf_Shdr *Section = getSection(symb);
1066 switch (Section->sh_type) {
1067 case ELF::SHT_PROGBITS:
1068 case ELF::SHT_DYNAMIC:
1069 switch (Section->sh_flags) {
1070 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1072 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1074 case ELF::SHF_ALLOC:
1075 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1076 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1080 case ELF::SHT_NOBITS: ret = 'b';
1084 switch (getSymbolTableIndex(symb)) {
1085 case ELF::SHN_UNDEF:
1089 case ELF::SHN_ABS: ret = 'a'; break;
1090 case ELF::SHN_COMMON: ret = 'c'; break;
1093 switch (symb->getBinding()) {
1094 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1096 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1099 if (symb->getType() == ELF::STT_OBJECT)
1105 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1107 if (error_code ec = getSymbolName(Symb, name))
1109 Result = StringSwitch<char>(name)
1110 .StartsWith(".debug", 'N')
1111 .StartsWith(".note", 'n')
1113 return object_error::success;
1117 return object_error::success;
1120 template<class ELFT>
1121 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1122 SymbolRef::Type &Result) const {
1123 validateSymbol(Symb);
1124 const Elf_Sym *symb = getSymbol(Symb);
1126 switch (symb->getType()) {
1127 case ELF::STT_NOTYPE:
1128 Result = SymbolRef::ST_Unknown;
1130 case ELF::STT_SECTION:
1131 Result = SymbolRef::ST_Debug;
1134 Result = SymbolRef::ST_File;
1137 Result = SymbolRef::ST_Function;
1139 case ELF::STT_OBJECT:
1140 case ELF::STT_COMMON:
1142 Result = SymbolRef::ST_Data;
1145 Result = SymbolRef::ST_Other;
1148 return object_error::success;
1151 template<class ELFT>
1152 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1153 uint32_t &Result) const {
1154 validateSymbol(Symb);
1155 const Elf_Sym *symb = getSymbol(Symb);
1157 Result = SymbolRef::SF_None;
1159 if (symb->getBinding() != ELF::STB_LOCAL)
1160 Result |= SymbolRef::SF_Global;
1162 if (symb->getBinding() == ELF::STB_WEAK)
1163 Result |= SymbolRef::SF_Weak;
1165 if (symb->st_shndx == ELF::SHN_ABS)
1166 Result |= SymbolRef::SF_Absolute;
1168 if (symb->getType() == ELF::STT_FILE ||
1169 symb->getType() == ELF::STT_SECTION)
1170 Result |= SymbolRef::SF_FormatSpecific;
1172 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1173 Result |= SymbolRef::SF_Undefined;
1175 if (symb->getType() == ELF::STT_COMMON ||
1176 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1177 Result |= SymbolRef::SF_Common;
1179 if (symb->getType() == ELF::STT_TLS)
1180 Result |= SymbolRef::SF_ThreadLocal;
1182 return object_error::success;
1185 template<class ELFT>
1186 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1187 section_iterator &Res) const {
1188 validateSymbol(Symb);
1189 const Elf_Sym *symb = getSymbol(Symb);
1190 const Elf_Shdr *sec = getSection(symb);
1192 Res = end_sections();
1195 Sec.p = reinterpret_cast<intptr_t>(sec);
1196 Res = section_iterator(SectionRef(Sec, this));
1198 return object_error::success;
1201 template<class ELFT>
1202 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1203 uint64_t &Val) const {
1204 validateSymbol(Symb);
1205 const Elf_Sym *symb = getSymbol(Symb);
1206 Val = symb->st_value;
1207 return object_error::success;
1210 template<class ELFT>
1211 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1212 SectionRef &Result) const {
1213 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1214 sec += Header->e_shentsize;
1215 Sec.p = reinterpret_cast<intptr_t>(sec);
1216 Result = SectionRef(Sec, this);
1217 return object_error::success;
1220 template<class ELFT>
1221 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1222 StringRef &Result) const {
1223 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1224 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1225 return object_error::success;
1228 template<class ELFT>
1229 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1230 uint64_t &Result) const {
1231 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1232 Result = sec->sh_addr;
1233 return object_error::success;
1236 template<class ELFT>
1237 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1238 uint64_t &Result) const {
1239 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1240 Result = sec->sh_size;
1241 return object_error::success;
1244 template<class ELFT>
1245 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1246 StringRef &Result) const {
1247 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1248 const char *start = (const char*)base() + sec->sh_offset;
1249 Result = StringRef(start, sec->sh_size);
1250 return object_error::success;
1253 template<class ELFT>
1254 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1255 StringRef &Result) const {
1256 const char *start = (const char*)base() + Sec->sh_offset;
1257 Result = StringRef(start, Sec->sh_size);
1258 return object_error::success;
1261 template<class ELFT>
1262 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1263 uint64_t &Result) const {
1264 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1265 Result = sec->sh_addralign;
1266 return object_error::success;
1269 template<class ELFT>
1270 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1271 bool &Result) const {
1272 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1273 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1277 return object_error::success;
1280 template<class ELFT>
1281 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1282 bool &Result) const {
1283 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1284 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1285 && sec->sh_type == ELF::SHT_PROGBITS)
1289 return object_error::success;
1292 template<class ELFT>
1293 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1294 bool &Result) const {
1295 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1296 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1297 && sec->sh_type == ELF::SHT_NOBITS)
1301 return object_error::success;
1304 template<class ELFT>
1305 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1306 DataRefImpl Sec, bool &Result) const {
1307 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1308 if (sec->sh_flags & ELF::SHF_ALLOC)
1312 return object_error::success;
1315 template<class ELFT>
1316 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1317 bool &Result) const {
1318 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1319 if (sec->sh_type == ELF::SHT_NOBITS)
1323 return object_error::success;
1326 template<class ELFT>
1327 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1328 bool &Result) const {
1329 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1330 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1331 // in the object image) and vice versa.
1332 Result = sec->sh_type == ELF::SHT_NOBITS;
1333 return object_error::success;
1336 template<class ELFT>
1337 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1338 bool &Result) const {
1339 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1340 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1344 return object_error::success;
1347 template<class ELFT>
1348 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1350 bool &Result) const {
1351 // FIXME: Unimplemented.
1353 return object_error::success;
1356 template<class ELFT>
1358 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1359 DataRefImpl RelData;
1360 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1361 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1362 if (sec != 0 && ittr != SectionRelocMap.end()) {
1363 RelData.w.a = getSection(ittr->second[0])->sh_info;
1364 RelData.w.b = ittr->second[0];
1367 return relocation_iterator(RelocationRef(RelData, this));
1370 template<class ELFT>
1372 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1373 DataRefImpl RelData;
1374 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1375 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1376 if (sec != 0 && ittr != SectionRelocMap.end()) {
1377 // Get the index of the last relocation section for this section.
1378 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1379 const Elf_Shdr *relocsec = getSection(relocsecindex);
1380 RelData.w.a = relocsec->sh_info;
1381 RelData.w.b = relocsecindex;
1382 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1384 return relocation_iterator(RelocationRef(RelData, this));
1388 template<class ELFT>
1389 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1390 RelocationRef &Result) const {
1392 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1393 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1394 // We have reached the end of the relocations for this section. See if there
1395 // is another relocation section.
1396 typename RelocMap_t::mapped_type relocseclist =
1397 SectionRelocMap.lookup(getSection(Rel.w.a));
1399 // Do a binary search for the current reloc section index (which must be
1400 // present). Then get the next one.
1401 typename RelocMap_t::mapped_type::const_iterator loc =
1402 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1405 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1406 // to the end iterator.
1407 if (loc != relocseclist.end()) {
1412 Result = RelocationRef(Rel, this);
1413 return object_error::success;
1416 template<class ELFT>
1417 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1418 SymbolRef &Result) const {
1420 const Elf_Shdr *sec = getSection(Rel.w.b);
1421 switch (sec->sh_type) {
1423 report_fatal_error("Invalid section type in Rel!");
1424 case ELF::SHT_REL : {
1425 symbolIdx = getRel(Rel)->getSymbol();
1428 case ELF::SHT_RELA : {
1429 symbolIdx = getRela(Rel)->getSymbol();
1433 DataRefImpl SymbolData;
1434 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1435 if (it == SymbolTableSectionsIndexMap.end())
1436 report_fatal_error("Relocation symbol table not found!");
1437 SymbolData.d.a = symbolIdx;
1438 SymbolData.d.b = it->second;
1439 Result = SymbolRef(SymbolData, this);
1440 return object_error::success;
1443 template<class ELFT>
1444 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1445 uint64_t &Result) const {
1447 const Elf_Shdr *sec = getSection(Rel.w.b);
1448 switch (sec->sh_type) {
1450 report_fatal_error("Invalid section type in Rel!");
1451 case ELF::SHT_REL : {
1452 offset = getRel(Rel)->r_offset;
1455 case ELF::SHT_RELA : {
1456 offset = getRela(Rel)->r_offset;
1462 return object_error::success;
1465 template<class ELFT>
1466 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1467 uint64_t &Result) const {
1469 const Elf_Shdr *sec = getSection(Rel.w.b);
1470 switch (sec->sh_type) {
1472 report_fatal_error("Invalid section type in Rel!");
1473 case ELF::SHT_REL : {
1474 offset = getRel(Rel)->r_offset;
1477 case ELF::SHT_RELA : {
1478 offset = getRela(Rel)->r_offset;
1483 Result = offset - sec->sh_addr;
1484 return object_error::success;
1487 template<class ELFT>
1488 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1489 uint64_t &Result) const {
1490 const Elf_Shdr *sec = getSection(Rel.w.b);
1491 switch (sec->sh_type) {
1493 report_fatal_error("Invalid section type in Rel!");
1494 case ELF::SHT_REL : {
1495 Result = getRel(Rel)->getType();
1498 case ELF::SHT_RELA : {
1499 Result = getRela(Rel)->getType();
1503 return object_error::success;
1506 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1507 case ELF::enum: res = #enum; break;
1509 template<class ELFT>
1510 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1511 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1512 const Elf_Shdr *sec = getSection(Rel.w.b);
1515 switch (sec->sh_type) {
1517 return object_error::parse_failed;
1518 case ELF::SHT_REL : {
1519 type = getRel(Rel)->getType();
1522 case ELF::SHT_RELA : {
1523 type = getRela(Rel)->getType();
1527 switch (Header->e_machine) {
1528 case ELF::EM_X86_64:
1530 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1531 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1532 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1533 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1534 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1535 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1536 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1537 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1538 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1539 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1540 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1541 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1542 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1543 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1544 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1545 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1546 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1547 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1548 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1549 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1550 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1551 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1552 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1553 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1554 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1555 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1556 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1557 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1558 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1559 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1560 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1561 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1589 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1590 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1591 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1592 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1593 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1594 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1612 case ELF::EM_AARCH64:
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1636 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1637 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1638 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1639 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1640 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1829 case ELF::EM_HEXAGON:
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
1924 Result.append(res.begin(), res.end());
1925 return object_error::success;
1928 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
1930 template<class ELFT>
1931 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
1932 DataRefImpl Rel, int64_t &Result) const {
1933 const Elf_Shdr *sec = getSection(Rel.w.b);
1934 switch (sec->sh_type) {
1936 report_fatal_error("Invalid section type in Rel!");
1937 case ELF::SHT_REL : {
1939 return object_error::success;
1941 case ELF::SHT_RELA : {
1942 Result = getRela(Rel)->r_addend;
1943 return object_error::success;
1948 template<class ELFT>
1949 error_code ELFObjectFile<ELFT>::getRelocationValueString(
1950 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1951 const Elf_Shdr *sec = getSection(Rel.w.b);
1955 uint16_t symbol_index = 0;
1956 switch (sec->sh_type) {
1958 return object_error::parse_failed;
1959 case ELF::SHT_REL: {
1960 type = getRel(Rel)->getType();
1961 symbol_index = getRel(Rel)->getSymbol();
1962 // TODO: Read implicit addend from section data.
1965 case ELF::SHT_RELA: {
1966 type = getRela(Rel)->getType();
1967 symbol_index = getRela(Rel)->getSymbol();
1968 addend = getRela(Rel)->r_addend;
1972 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
1974 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
1976 switch (Header->e_machine) {
1977 case ELF::EM_X86_64:
1979 case ELF::R_X86_64_PC8:
1980 case ELF::R_X86_64_PC16:
1981 case ELF::R_X86_64_PC32: {
1983 raw_string_ostream fmt(fmtbuf);
1984 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
1986 Result.append(fmtbuf.begin(), fmtbuf.end());
1989 case ELF::R_X86_64_8:
1990 case ELF::R_X86_64_16:
1991 case ELF::R_X86_64_32:
1992 case ELF::R_X86_64_32S:
1993 case ELF::R_X86_64_64: {
1995 raw_string_ostream fmt(fmtbuf);
1996 fmt << symname << (addend < 0 ? "" : "+") << addend;
1998 Result.append(fmtbuf.begin(), fmtbuf.end());
2005 case ELF::EM_AARCH64:
2007 case ELF::EM_HEXAGON:
2014 Result.append(res.begin(), res.end());
2015 return object_error::success;
2018 // Verify that the last byte in the string table in a null.
2019 template<class ELFT>
2020 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2021 const char *strtab = (const char*)base() + sh->sh_offset;
2022 if (strtab[sh->sh_size - 1] != 0)
2023 // FIXME: Proper error handling.
2024 report_fatal_error("String table must end with a null terminator!");
2027 template<class ELFT>
2028 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2029 : ObjectFile(getELFType(
2030 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2034 , isDyldELFObject(false)
2035 , SectionHeaderTable(0)
2036 , dot_shstrtab_sec(0)
2039 , dot_dynamic_sec(0)
2040 , dot_gnu_version_sec(0)
2041 , dot_gnu_version_r_sec(0)
2042 , dot_gnu_version_d_sec(0)
2046 const uint64_t FileSize = Data->getBufferSize();
2048 if (sizeof(Elf_Ehdr) > FileSize)
2049 // FIXME: Proper error handling.
2050 report_fatal_error("File too short!");
2052 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2054 if (Header->e_shoff == 0)
2057 const uint64_t SectionTableOffset = Header->e_shoff;
2059 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2060 // FIXME: Proper error handling.
2061 report_fatal_error("Section header table goes past end of file!");
2063 // The getNumSections() call below depends on SectionHeaderTable being set.
2064 SectionHeaderTable =
2065 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2066 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2068 if (SectionTableOffset + SectionTableSize > FileSize)
2069 // FIXME: Proper error handling.
2070 report_fatal_error("Section table goes past end of file!");
2072 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2073 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2074 const Elf_Shdr* sh = SectionHeaderTable;
2076 // Reserve SymbolTableSections[0] for .dynsym
2077 SymbolTableSections.push_back(NULL);
2079 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2080 switch (sh->sh_type) {
2081 case ELF::SHT_SYMTAB_SHNDX: {
2082 if (SymbolTableSectionHeaderIndex)
2083 // FIXME: Proper error handling.
2084 report_fatal_error("More than one .symtab_shndx!");
2085 SymbolTableSectionHeaderIndex = sh;
2088 case ELF::SHT_SYMTAB: {
2089 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2090 SymbolTableSections.push_back(sh);
2093 case ELF::SHT_DYNSYM: {
2094 if (SymbolTableSections[0] != NULL)
2095 // FIXME: Proper error handling.
2096 report_fatal_error("More than one .dynsym!");
2097 SymbolTableSectionsIndexMap[i] = 0;
2098 SymbolTableSections[0] = sh;
2102 case ELF::SHT_RELA: {
2103 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2106 case ELF::SHT_DYNAMIC: {
2107 if (dot_dynamic_sec != NULL)
2108 // FIXME: Proper error handling.
2109 report_fatal_error("More than one .dynamic!");
2110 dot_dynamic_sec = sh;
2113 case ELF::SHT_GNU_versym: {
2114 if (dot_gnu_version_sec != NULL)
2115 // FIXME: Proper error handling.
2116 report_fatal_error("More than one .gnu.version section!");
2117 dot_gnu_version_sec = sh;
2120 case ELF::SHT_GNU_verdef: {
2121 if (dot_gnu_version_d_sec != NULL)
2122 // FIXME: Proper error handling.
2123 report_fatal_error("More than one .gnu.version_d section!");
2124 dot_gnu_version_d_sec = sh;
2127 case ELF::SHT_GNU_verneed: {
2128 if (dot_gnu_version_r_sec != NULL)
2129 // FIXME: Proper error handling.
2130 report_fatal_error("More than one .gnu.version_r section!");
2131 dot_gnu_version_r_sec = sh;
2138 // Sort section relocation lists by index.
2139 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2140 e = SectionRelocMap.end(); i != e; ++i) {
2141 std::sort(i->second.begin(), i->second.end());
2144 // Get string table sections.
2145 dot_shstrtab_sec = getSection(getStringTableIndex());
2146 if (dot_shstrtab_sec) {
2147 // Verify that the last byte in the string table in a null.
2148 VerifyStrTab(dot_shstrtab_sec);
2151 // Merge this into the above loop.
2152 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2153 *e = i + getNumSections() * Header->e_shentsize;
2154 i != e; i += Header->e_shentsize) {
2155 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2156 if (sh->sh_type == ELF::SHT_STRTAB) {
2157 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2158 if (SectionName == ".strtab") {
2159 if (dot_strtab_sec != 0)
2160 // FIXME: Proper error handling.
2161 report_fatal_error("Already found section named .strtab!");
2162 dot_strtab_sec = sh;
2163 VerifyStrTab(dot_strtab_sec);
2164 } else if (SectionName == ".dynstr") {
2165 if (dot_dynstr_sec != 0)
2166 // FIXME: Proper error handling.
2167 report_fatal_error("Already found section named .dynstr!");
2168 dot_dynstr_sec = sh;
2169 VerifyStrTab(dot_dynstr_sec);
2174 // Build symbol name side-mapping if there is one.
2175 if (SymbolTableSectionHeaderIndex) {
2176 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2177 SymbolTableSectionHeaderIndex->sh_offset);
2179 for (symbol_iterator si = begin_symbols(),
2180 se = end_symbols(); si != se; si.increment(ec)) {
2182 report_fatal_error("Fewer extended symbol table entries than symbols!");
2183 if (*ShndxTable != ELF::SHN_UNDEF)
2184 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2190 // Get the symbol table index in the symtab section given a symbol
2191 template<class ELFT>
2192 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2193 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2194 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2195 uintptr_t SymLoc = uintptr_t(Sym);
2196 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2197 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2198 uint64_t SymOffset = SymLoc - SymTabLoc;
2199 assert(SymOffset % SymTab->sh_entsize == 0 &&
2200 "Symbol not multiple of symbol size!");
2201 return SymOffset / SymTab->sh_entsize;
2204 template<class ELFT>
2205 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2206 DataRefImpl SymbolData;
2207 if (SymbolTableSections.size() <= 1) {
2208 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2209 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2211 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2212 SymbolData.d.b = 1; // The 0th table is .dynsym
2214 return symbol_iterator(SymbolRef(SymbolData, this));
2217 template<class ELFT>
2218 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2219 DataRefImpl SymbolData;
2220 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2221 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2222 return symbol_iterator(SymbolRef(SymbolData, this));
2225 template<class ELFT>
2226 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2227 DataRefImpl SymbolData;
2228 if (SymbolTableSections[0] == NULL) {
2229 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2230 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2232 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2233 SymbolData.d.b = 0; // The 0th table is .dynsym
2235 return symbol_iterator(SymbolRef(SymbolData, this));
2238 template<class ELFT>
2239 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2240 DataRefImpl SymbolData;
2241 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2242 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2243 return symbol_iterator(SymbolRef(SymbolData, this));
2246 template<class ELFT>
2247 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2249 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2250 return section_iterator(SectionRef(ret, this));
2253 template<class ELFT>
2254 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2256 ret.p = reinterpret_cast<intptr_t>(base()
2258 + (Header->e_shentsize*getNumSections()));
2259 return section_iterator(SectionRef(ret, this));
2262 template<class ELFT>
2263 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2264 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2265 if (dot_dynamic_sec)
2266 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2267 (const char *)base() + dot_dynamic_sec->sh_offset);
2268 return Elf_Dyn_iterator(0, 0);
2271 template<class ELFT>
2272 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2273 ELFObjectFile<ELFT>::end_dynamic_table() const {
2274 if (dot_dynamic_sec)
2275 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2276 (const char *)base() + dot_dynamic_sec->sh_offset +
2277 dot_dynamic_sec->sh_size);
2278 return Elf_Dyn_iterator(0, 0);
2281 template<class ELFT>
2282 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2284 // Find the DT_SONAME entry
2285 Elf_Dyn_iterator it = begin_dynamic_table();
2286 Elf_Dyn_iterator ie = end_dynamic_table();
2287 for (; it != ie; ++it) {
2288 if (it->getTag() == ELF::DT_SONAME)
2292 if (dot_dynstr_sec == NULL)
2293 report_fatal_error("Dynamic string table is missing");
2294 dt_soname = getString(dot_dynstr_sec, it->getVal());
2302 template<class ELFT>
2303 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2304 // Find the first DT_NEEDED entry
2305 Elf_Dyn_iterator i = begin_dynamic_table();
2306 Elf_Dyn_iterator e = end_dynamic_table();
2307 for (; i != e; ++i) {
2308 if (i->getTag() == ELF::DT_NEEDED)
2313 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2314 return library_iterator(LibraryRef(DRI, this));
2317 template<class ELFT>
2318 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2319 LibraryRef &Result) const {
2320 // Use the same DataRefImpl format as DynRef.
2321 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2322 reinterpret_cast<const char *>(Data.p));
2323 Elf_Dyn_iterator e = end_dynamic_table();
2325 // Skip the current dynamic table entry.
2328 // Find the next DT_NEEDED entry.
2329 for (; i != e && i->getTag() != ELF::DT_NEEDED; ++i);
2332 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2333 Result = LibraryRef(DRI, this);
2334 return object_error::success;
2337 template<class ELFT>
2338 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2339 StringRef &Res) const {
2340 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2341 reinterpret_cast<const char *>(Data.p));
2342 if (i == end_dynamic_table())
2343 report_fatal_error("getLibraryPath() called on iterator end");
2345 if (i->getTag() != ELF::DT_NEEDED)
2346 report_fatal_error("Invalid library_iterator");
2348 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2349 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2350 // the time, but the specification allows exceptions.
2351 // TODO: This should really use DT_STRTAB instead. Doing this requires
2352 // reading the program headers.
2353 if (dot_dynstr_sec == NULL)
2354 report_fatal_error("Dynamic string table is missing");
2355 Res = getString(dot_dynstr_sec, i->getVal());
2356 return object_error::success;
2359 template<class ELFT>
2360 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2361 Elf_Dyn_iterator e = end_dynamic_table();
2363 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2364 return library_iterator(LibraryRef(DRI, this));
2367 template<class ELFT>
2368 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2369 return ELFT::Is64Bits ? 8 : 4;
2372 template<class ELFT>
2373 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2374 switch(Header->e_ident[ELF::EI_CLASS]) {
2375 case ELF::ELFCLASS32:
2376 switch(Header->e_machine) {
2378 return "ELF32-i386";
2379 case ELF::EM_X86_64:
2380 return "ELF32-x86-64";
2383 case ELF::EM_HEXAGON:
2384 return "ELF32-hexagon";
2386 return "ELF32-mips";
2388 return "ELF32-unknown";
2390 case ELF::ELFCLASS64:
2391 switch(Header->e_machine) {
2393 return "ELF64-i386";
2394 case ELF::EM_X86_64:
2395 return "ELF64-x86-64";
2396 case ELF::EM_AARCH64:
2397 return "ELF64-aarch64";
2399 return "ELF64-ppc64";
2401 return "ELF64-unknown";
2404 // FIXME: Proper error handling.
2405 report_fatal_error("Invalid ELFCLASS!");
2409 template<class ELFT>
2410 unsigned ELFObjectFile<ELFT>::getArch() const {
2411 switch(Header->e_machine) {
2414 case ELF::EM_X86_64:
2415 return Triple::x86_64;
2416 case ELF::EM_AARCH64:
2417 return Triple::aarch64;
2420 case ELF::EM_HEXAGON:
2421 return Triple::hexagon;
2423 return (ELFT::TargetEndianness == support::little) ?
2424 Triple::mipsel : Triple::mips;
2426 return Triple::ppc64;
2428 return Triple::UnknownArch;
2432 template<class ELFT>
2433 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2434 assert(Header && "Header not initialized!");
2435 if (Header->e_shnum == ELF::SHN_UNDEF) {
2436 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2437 return SectionHeaderTable->sh_size;
2439 return Header->e_shnum;
2442 template<class ELFT>
2444 ELFObjectFile<ELFT>::getStringTableIndex() const {
2445 if (Header->e_shnum == ELF::SHN_UNDEF) {
2446 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2447 return SectionHeaderTable->sh_link;
2448 if (Header->e_shstrndx >= getNumSections())
2451 return Header->e_shstrndx;
2454 template<class ELFT>
2455 template<typename T>
2457 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2458 return getEntry<T>(getSection(Section), Entry);
2461 template<class ELFT>
2462 template<typename T>
2464 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2465 return reinterpret_cast<const T *>(
2467 + Section->sh_offset
2468 + (Entry * Section->sh_entsize));
2471 template<class ELFT>
2472 const typename ELFObjectFile<ELFT>::Elf_Sym *
2473 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2474 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2477 template<class ELFT>
2478 const typename ELFObjectFile<ELFT>::Elf_Rel *
2479 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2480 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2483 template<class ELFT>
2484 const typename ELFObjectFile<ELFT>::Elf_Rela *
2485 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2486 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2489 template<class ELFT>
2490 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2491 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2492 const Elf_Shdr *sec = getSection(Symb.d.b);
2493 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2494 // FIXME: Proper error handling.
2495 report_fatal_error("Invalid symbol table section!");
2499 template<class ELFT>
2500 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2501 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2504 if (!SectionHeaderTable || index >= getNumSections())
2505 // FIXME: Proper error handling.
2506 report_fatal_error("Invalid section index!");
2508 return reinterpret_cast<const Elf_Shdr *>(
2509 reinterpret_cast<const char *>(SectionHeaderTable)
2510 + (index * Header->e_shentsize));
2513 template<class ELFT>
2514 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2515 ELF::Elf32_Word offset) const {
2516 return getString(getSection(section), offset);
2519 template<class ELFT>
2520 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2521 ELF::Elf32_Word offset) const {
2522 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2523 if (offset >= section->sh_size)
2524 // FIXME: Proper error handling.
2525 report_fatal_error("Symbol name offset outside of string table!");
2526 return (const char *)base() + section->sh_offset + offset;
2529 template<class ELFT>
2530 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2531 const Elf_Sym *symb,
2532 StringRef &Result) const {
2533 if (symb->st_name == 0) {
2534 const Elf_Shdr *section = getSection(symb);
2538 Result = getString(dot_shstrtab_sec, section->sh_name);
2539 return object_error::success;
2542 if (section == SymbolTableSections[0]) {
2543 // Symbol is in .dynsym, use .dynstr string table
2544 Result = getString(dot_dynstr_sec, symb->st_name);
2546 // Use the default symbol table name section.
2547 Result = getString(dot_strtab_sec, symb->st_name);
2549 return object_error::success;
2552 template<class ELFT>
2553 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2554 StringRef &Result) const {
2555 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2556 return object_error::success;
2559 template<class ELFT>
2560 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2561 const Elf_Sym *symb,
2563 bool &IsDefault) const {
2564 // Handle non-dynamic symbols.
2565 if (section != SymbolTableSections[0]) {
2566 // Non-dynamic symbols can have versions in their names
2567 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2568 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2570 error_code ec = getSymbolName(section, symb, Name);
2571 if (ec != object_error::success)
2573 size_t atpos = Name.find('@');
2574 if (atpos == StringRef::npos) {
2577 return object_error::success;
2580 if (atpos < Name.size() && Name[atpos] == '@') {
2586 Version = Name.substr(atpos);
2587 return object_error::success;
2590 // This is a dynamic symbol. Look in the GNU symbol version table.
2591 if (dot_gnu_version_sec == NULL) {
2592 // No version table.
2595 return object_error::success;
2598 // Determine the position in the symbol table of this entry.
2599 const char *sec_start = (const char*)base() + section->sh_offset;
2600 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2602 // Get the corresponding version index entry
2603 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2604 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2606 // Special markers for unversioned symbols.
2607 if (version_index == ELF::VER_NDX_LOCAL ||
2608 version_index == ELF::VER_NDX_GLOBAL) {
2611 return object_error::success;
2614 // Lookup this symbol in the version table
2616 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2617 report_fatal_error("Symbol has version index without corresponding "
2618 "define or reference entry");
2619 const VersionMapEntry &entry = VersionMap[version_index];
2621 // Get the version name string
2623 if (entry.isVerdef()) {
2624 // The first Verdaux entry holds the name.
2625 name_offset = entry.getVerdef()->getAux()->vda_name;
2627 name_offset = entry.getVernaux()->vna_name;
2629 Version = getString(dot_dynstr_sec, name_offset);
2632 if (entry.isVerdef()) {
2633 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2638 return object_error::success;
2641 /// This is a generic interface for retrieving GNU symbol version
2642 /// information from an ELFObjectFile.
2643 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2644 const SymbolRef &Sym,
2647 // Little-endian 32-bit
2648 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2649 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2650 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2652 // Big-endian 32-bit
2653 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2654 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2655 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2657 // Little-endian 64-bit
2658 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2659 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2660 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2662 // Big-endian 64-bit
2663 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2664 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2665 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2667 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");