ELF.h revision 5de735a962a255676cf3a9bc255579d465670633 
1//===- ELF.h - ELF object file implementation -------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares the ELFObjectFile template class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_OBJECT_ELF_H
15#define LLVM_OBJECT_ELF_H
16
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"
29#include <algorithm>
30#include <limits>
31#include <utility>
32
33namespace llvm {
34namespace object {
35
36using support::endianness;
37
38template<endianness target_endianness, std::size_t max_alignment, bool is64Bits>
39struct ELFType {
40  static const endianness TargetEndianness = target_endianness;
41  static const std::size_t MaxAlignment = max_alignment;
42  static const bool Is64Bits = is64Bits;
43};
44
45template<typename T, int max_align>
46struct MaximumAlignment {
47  enum {value = AlignOf<T>::Alignment > max_align ? max_align
48                                                  : AlignOf<T>::Alignment};
49};
50
51// Subclasses of ELFObjectFile may need this for template instantiation
52inline std::pair<unsigned char, unsigned char>
53getElfArchType(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]);
58}
59
60// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
61template<endianness target_endianness, std::size_t max_alignment>
62struct 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;
78};
79
80template<class ELFT>
81struct ELFDataTypeTypedefHelper;
82
83/// ELF 32bit types.
84template<endianness TargetEndianness, std::size_t MaxAlign>
85struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, false> >
86  : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
87  typedef uint32_t value_type;
88  typedef support::detail::packed_endian_specific_integral
89    <value_type, TargetEndianness,
90     MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
91  typedef support::detail::packed_endian_specific_integral
92    <value_type, TargetEndianness,
93     MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
94};
95
96/// ELF 64bit types.
97template<endianness TargetEndianness, std::size_t MaxAlign>
98struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, true> >
99  : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
100  typedef uint64_t value_type;
101  typedef support::detail::packed_endian_specific_integral
102    <value_type, TargetEndianness,
103     MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
104  typedef support::detail::packed_endian_specific_integral
105    <value_type, TargetEndianness,
106     MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
107};
108
109// I really don't like doing this, but the alternative is copypasta.
110#define LLVM_ELF_IMPORT_TYPES(E, M, W)                                         \
111typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Addr Elf_Addr; \
112typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Off Elf_Off;   \
113typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Half Elf_Half; \
114typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Word Elf_Word; \
115typedef typename                                                               \
116  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sword Elf_Sword;              \
117typedef typename                                                               \
118  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Xword Elf_Xword;              \
119typedef typename                                                               \
120  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sxword Elf_Sxword;
121
122#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)                                       \
123  LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::MaxAlignment,            \
124  ELFT::Is64Bits)
125
126// Section header.
127template<class ELFT>
128struct Elf_Shdr_Base;
129
130template<endianness TargetEndianness, std::size_t MaxAlign>
131struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, false> > {
132  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, 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
143};
144
145template<endianness TargetEndianness, std::size_t MaxAlign>
146struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, true> > {
147  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
148  Elf_Word  sh_name;     // Section name (index into string table)
149  Elf_Word  sh_type;     // Section type (SHT_*)
150  Elf_Xword sh_flags;    // Section flags (SHF_*)
151  Elf_Addr  sh_addr;     // Address where section is to be loaded
152  Elf_Off   sh_offset;   // File offset of section data, in bytes
153  Elf_Xword sh_size;     // Size of section, in bytes
154  Elf_Word  sh_link;     // Section type-specific header table index link
155  Elf_Word  sh_info;     // Section type-specific extra information
156  Elf_Xword sh_addralign;// Section address alignment
157  Elf_Xword sh_entsize;  // Size of records contained within the section
158};
159
160template<class ELFT>
161struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
162  using Elf_Shdr_Base<ELFT>::sh_entsize;
163  using Elf_Shdr_Base<ELFT>::sh_size;
164
165  /// @brief Get the number of entities this section contains if it has any.
166  unsigned getEntityCount() const {
167    if (sh_entsize == 0)
168      return 0;
169    return sh_size / sh_entsize;
170  }
171};
172
173template<class ELFT>
174struct Elf_Sym_Base;
175
176template<endianness TargetEndianness, std::size_t MaxAlign>
177struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, false> > {
178  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
179  Elf_Word      st_name;  // Symbol name (index into string table)
180  Elf_Addr      st_value; // Value or address associated with the symbol
181  Elf_Word      st_size;  // Size of the symbol
182  unsigned char st_info;  // Symbol's type and binding attributes
183  unsigned char st_other; // Must be zero; reserved
184  Elf_Half      st_shndx; // Which section (header table index) it's defined in
185};
186
187template<endianness TargetEndianness, std::size_t MaxAlign>
188struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, true> > {
189  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
190  Elf_Word      st_name;  // Symbol name (index into string table)
191  unsigned char st_info;  // Symbol's type and binding attributes
192  unsigned char st_other; // Must be zero; reserved
193  Elf_Half      st_shndx; // Which section (header table index) it's defined in
194  Elf_Addr      st_value; // Value or address associated with the symbol
195  Elf_Xword     st_size;  // Size of the symbol
196};
197
198template<class ELFT>
199struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
200  using Elf_Sym_Base<ELFT>::st_info;
201
202  // These accessors and mutators correspond to the ELF32_ST_BIND,
203  // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
204  unsigned char getBinding() const { return st_info >> 4; }
205  unsigned char getType() const { return st_info & 0x0f; }
206  void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
207  void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
208  void setBindingAndType(unsigned char b, unsigned char t) {
209    st_info = (b << 4) + (t & 0x0f);
210  }
211};
212
213/// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
214/// (.gnu.version). This structure is identical for ELF32 and ELF64.
215template<class ELFT>
216struct Elf_Versym_Impl {
217  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
218  Elf_Half vs_index;   // Version index with flags (e.g. VERSYM_HIDDEN)
219};
220
221template<class ELFT>
222struct Elf_Verdaux_Impl;
223
224/// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
225/// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
226template<class ELFT>
227struct Elf_Verdef_Impl {
228  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
229  typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
230  Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
231  Elf_Half vd_flags;   // Bitwise flags (VER_DEF_*)
232  Elf_Half vd_ndx;     // Version index, used in .gnu.version entries
233  Elf_Half vd_cnt;     // Number of Verdaux entries
234  Elf_Word vd_hash;    // Hash of name
235  Elf_Word vd_aux;     // Offset to the first Verdaux entry (in bytes)
236  Elf_Word vd_next;    // Offset to the next Verdef entry (in bytes)
237
238  /// Get the first Verdaux entry for this Verdef.
239  const Elf_Verdaux *getAux() const {
240    return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
241  }
242};
243
244/// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
245/// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
246template<class ELFT>
247struct Elf_Verdaux_Impl {
248  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
249  Elf_Word vda_name; // Version name (offset in string table)
250  Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
251};
252
253/// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
254/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
255template<class ELFT>
256struct Elf_Verneed_Impl {
257  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
258  Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
259  Elf_Half vn_cnt;     // Number of associated Vernaux entries
260  Elf_Word vn_file;    // Library name (string table offset)
261  Elf_Word vn_aux;     // Offset to first Vernaux entry (in bytes)
262  Elf_Word vn_next;    // Offset to next Verneed entry (in bytes)
263};
264
265/// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
266/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
267template<class ELFT>
268struct Elf_Vernaux_Impl {
269  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
270  Elf_Word vna_hash;  // Hash of dependency name
271  Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
272  Elf_Half vna_other; // Version index, used in .gnu.version entries
273  Elf_Word vna_name;  // Dependency name
274  Elf_Word vna_next;  // Offset to next Vernaux entry (in bytes)
275};
276
277/// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
278///               table section (.dynamic) look like.
279template<class ELFT>
280struct Elf_Dyn_Base;
281
282template<endianness TargetEndianness, std::size_t MaxAlign>
283struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, false> > {
284  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
285  Elf_Sword d_tag;
286  union {
287    Elf_Word d_val;
288    Elf_Addr d_ptr;
289  } d_un;
290};
291
292template<endianness TargetEndianness, std::size_t MaxAlign>
293struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, true> > {
294  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
295  Elf_Sxword d_tag;
296  union {
297    Elf_Xword d_val;
298    Elf_Addr d_ptr;
299  } d_un;
300};
301
302/// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
303template<class ELFT>
304struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
305  using Elf_Dyn_Base<ELFT>::d_tag;
306  using Elf_Dyn_Base<ELFT>::d_un;
307  int64_t getTag() const { return d_tag; }
308  uint64_t getVal() const { return d_un.d_val; }
309  uint64_t getPtr() const { return d_un.ptr; }
310};
311
312// Elf_Rel: Elf Relocation
313template<class ELFT, bool isRela>
314struct Elf_Rel_Base;
315
316template<endianness TargetEndianness, std::size_t MaxAlign>
317struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> {
318  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
319  Elf_Addr r_offset;     // Location (file byte offset, or program virtual addr)
320  Elf_Word r_info;       // Symbol table index and type of relocation to apply
321
322  uint32_t getRInfo(bool isMips64EL) const {
323    assert(!isMips64EL);
324    return r_info;
325  }
326  void setRInfo(uint32_t R) {
327    r_info = R;
328  }
329};
330
331template<endianness TargetEndianness, std::size_t MaxAlign>
332struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> {
333  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
334  Elf_Addr  r_offset; // Location (file byte offset, or program virtual addr)
335  Elf_Xword r_info;   // Symbol table index and type of relocation to apply
336
337  uint64_t getRInfo(bool isMips64EL) const {
338    uint64_t t = r_info;
339    if (!isMips64EL)
340      return t;
341    // Mips64 little endian has a "special" encoding of r_info. Instead of one
342    // 64 bit little endian number, it is a little endian 32 bit number followed
343    // by a 32 bit big endian number.
344    return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
345      ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
346  }
347  void setRInfo(uint64_t R) {
348    // FIXME: Add mips64el support.
349    r_info = R;
350  }
351};
352
353template<endianness TargetEndianness, std::size_t MaxAlign>
354struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> {
355  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
356  Elf_Addr  r_offset; // Location (file byte offset, or program virtual addr)
357  Elf_Word  r_info;   // Symbol table index and type of relocation to apply
358  Elf_Sword r_addend; // Compute value for relocatable field by adding this
359
360  uint32_t getRInfo(bool isMips64EL) const {
361    assert(!isMips64EL);
362    return r_info;
363  }
364  void setRInfo(uint32_t R) {
365    r_info = R;
366  }
367};
368
369template<endianness TargetEndianness, std::size_t MaxAlign>
370struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> {
371  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
372  Elf_Addr   r_offset; // Location (file byte offset, or program virtual addr)
373  Elf_Xword  r_info;   // Symbol table index and type of relocation to apply
374  Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
375
376  uint64_t getRInfo(bool isMips64EL) const {
377    // Mips64 little endian has a "special" encoding of r_info. Instead of one
378    // 64 bit little endian number, it is a little endian 32 bit number followed
379    // by a 32 bit big endian number.
380    uint64_t t = r_info;
381    if (!isMips64EL)
382      return t;
383    return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
384      ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
385  }
386  void setRInfo(uint64_t R) {
387    // FIXME: Add mips64el support.
388    r_info = R;
389  }
390};
391
392template<class ELFT, bool isRela>
393struct Elf_Rel_Impl;
394
395template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
396struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>, isRela>
397       : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, isRela> {
398  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
399
400  // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
401  // and ELF64_R_INFO macros defined in the ELF specification:
402  uint32_t getSymbol(bool isMips64EL) const {
403    return (uint32_t) (this->getRInfo(isMips64EL) >> 32);
404  }
405  uint32_t getType(bool isMips64EL) const {
406    return (uint32_t) (this->getRInfo(isMips64EL) & 0xffffffffL);
407  }
408  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
409  void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
410  void setSymbolAndType(uint32_t s, uint32_t t) {
411    this->setRInfo(((uint64_t)s << 32) + (t&0xffffffffL));
412  }
413};
414
415template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
416struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>, isRela>
417       : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, isRela> {
418  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
419
420  // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
421  // and ELF32_R_INFO macros defined in the ELF specification:
422  uint32_t getSymbol(bool isMips64EL) const {
423    return this->getRInfo(isMips64EL) >> 8;
424  }
425  unsigned char getType(bool isMips64EL) const {
426    return (unsigned char) (this->getRInfo(isMips64EL) & 0x0ff);
427  }
428  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
429  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
430  void setSymbolAndType(uint32_t s, unsigned char t) {
431    this->setRInfo((s << 8) + t);
432  }
433};
434
435template<class ELFT>
436struct Elf_Ehdr_Impl {
437  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
438  unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
439  Elf_Half e_type;     // Type of file (see ET_*)
440  Elf_Half e_machine;  // Required architecture for this file (see EM_*)
441  Elf_Word e_version;  // Must be equal to 1
442  Elf_Addr e_entry;    // Address to jump to in order to start program
443  Elf_Off  e_phoff;    // Program header table's file offset, in bytes
444  Elf_Off  e_shoff;    // Section header table's file offset, in bytes
445  Elf_Word e_flags;    // Processor-specific flags
446  Elf_Half e_ehsize;   // Size of ELF header, in bytes
447  Elf_Half e_phentsize;// Size of an entry in the program header table
448  Elf_Half e_phnum;    // Number of entries in the program header table
449  Elf_Half e_shentsize;// Size of an entry in the section header table
450  Elf_Half e_shnum;    // Number of entries in the section header table
451  Elf_Half e_shstrndx; // Section header table index of section name
452                                 // string table
453  bool checkMagic() const {
454    return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
455  }
456   unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
457   unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
458};
459
460template<class ELFT>
461struct Elf_Phdr_Impl;
462
463template<endianness TargetEndianness, std::size_t MaxAlign>
464struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, false> > {
465  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
466  Elf_Word p_type;   // Type of segment
467  Elf_Off  p_offset; // FileOffset where segment is located, in bytes
468  Elf_Addr p_vaddr;  // Virtual Address of beginning of segment
469  Elf_Addr p_paddr;  // Physical address of beginning of segment (OS-specific)
470  Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
471  Elf_Word p_memsz;  // Num. of bytes in mem image of segment (may be zero)
472  Elf_Word p_flags;  // Segment flags
473  Elf_Word p_align;  // Segment alignment constraint
474};
475
476template<endianness TargetEndianness, std::size_t MaxAlign>
477struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, true> > {
478  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
479  Elf_Word p_type;   // Type of segment
480  Elf_Word p_flags;  // Segment flags
481  Elf_Off  p_offset; // FileOffset where segment is located, in bytes
482  Elf_Addr p_vaddr;  // Virtual Address of beginning of segment
483  Elf_Addr p_paddr;  // Physical address of beginning of segment (OS-specific)
484  Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
485  Elf_Xword p_memsz;  // Num. of bytes in mem image of segment (may be zero)
486  Elf_Xword p_align;  // Segment alignment constraint
487};
488
489template<class ELFT>
490class ELFObjectFile : public ObjectFile {
491  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
492
493public:
494  /// \brief Iterate over constant sized entities.
495  template<class EntT>
496  class ELFEntityIterator {
497  public:
498    typedef ptrdiff_t difference_type;
499    typedef EntT value_type;
500    typedef std::random_access_iterator_tag iterator_category;
501    typedef value_type &reference;
502    typedef value_type *pointer;
503
504    /// \brief Default construct iterator.
505    ELFEntityIterator() : EntitySize(0), Current(0) {}
506    ELFEntityIterator(uint64_t EntSize, const char *Start)
507      : EntitySize(EntSize)
508      , Current(Start) {}
509
510    reference operator *() {
511      assert(Current && "Attempted to dereference an invalid iterator!");
512      return *reinterpret_cast<pointer>(Current);
513    }
514
515    pointer operator ->() {
516      assert(Current && "Attempted to dereference an invalid iterator!");
517      return reinterpret_cast<pointer>(Current);
518    }
519
520    bool operator ==(const ELFEntityIterator &Other) {
521      return Current == Other.Current;
522    }
523
524    bool operator !=(const ELFEntityIterator &Other) {
525      return !(*this == Other);
526    }
527
528    ELFEntityIterator &operator ++() {
529      assert(Current && "Attempted to increment an invalid iterator!");
530      Current += EntitySize;
531      return *this;
532    }
533
534    ELFEntityIterator operator ++(int) {
535      ELFEntityIterator Tmp = *this;
536      ++*this;
537      return Tmp;
538    }
539
540    ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
541      EntitySize = Other.EntitySize;
542      Current = Other.Current;
543      return *this;
544    }
545
546    difference_type operator -(const ELFEntityIterator &Other) const {
547      assert(EntitySize == Other.EntitySize &&
548             "Subtracting iterators of different EntitiySize!");
549      return (Current - Other.Current) / EntitySize;
550    }
551
552    const char *get() const { return Current; }
553
554  private:
555    uint64_t EntitySize;
556    const char *Current;
557  };
558
559  typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
560  typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
561  typedef Elf_Sym_Impl<ELFT> Elf_Sym;
562  typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
563  typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
564  typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
565  typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
566  typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
567  typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
568  typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
569  typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
570  typedef Elf_Versym_Impl<ELFT> Elf_Versym;
571  typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
572  typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
573  typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
574  typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
575
576protected:
577  // This flag is used for classof, to distinguish ELFObjectFile from
578  // its subclass. If more subclasses will be created, this flag will
579  // have to become an enum.
580  bool isDyldELFObject;
581
582private:
583  const Elf_Ehdr *Header;
584  const Elf_Shdr *SectionHeaderTable;
585  const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
586  const Elf_Shdr *dot_strtab_sec;   // Symbol header string table.
587  const Elf_Shdr *dot_dynstr_sec;   // Dynamic symbol string table.
588
589  int SymbolTableIndex;
590  int DynamicSymbolTableIndex;
591  DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
592
593  const Elf_Shdr *dot_dynamic_sec;       // .dynamic
594  const Elf_Shdr *dot_gnu_version_sec;   // .gnu.version
595  const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
596  const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
597
598  // Pointer to SONAME entry in dynamic string table
599  // This is set the first time getLoadName is called.
600  mutable const char *dt_soname;
601
602private:
603  uint64_t getROffset(DataRefImpl Rel) const;
604
605  // Records for each version index the corresponding Verdef or Vernaux entry.
606  // This is filled the first time LoadVersionMap() is called.
607  class VersionMapEntry : public PointerIntPair<const void*, 1> {
608    public:
609    // If the integer is 0, this is an Elf_Verdef*.
610    // If the integer is 1, this is an Elf_Vernaux*.
611    VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
612    VersionMapEntry(const Elf_Verdef *verdef)
613        : PointerIntPair<const void*, 1>(verdef, 0) { }
614    VersionMapEntry(const Elf_Vernaux *vernaux)
615        : PointerIntPair<const void*, 1>(vernaux, 1) { }
616    bool isNull() const { return getPointer() == NULL; }
617    bool isVerdef() const { return !isNull() && getInt() == 0; }
618    bool isVernaux() const { return !isNull() && getInt() == 1; }
619    const Elf_Verdef *getVerdef() const {
620      return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
621    }
622    const Elf_Vernaux *getVernaux() const {
623      return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
624    }
625  };
626  mutable SmallVector<VersionMapEntry, 16> VersionMap;
627  void LoadVersionDefs(const Elf_Shdr *sec) const;
628  void LoadVersionNeeds(const Elf_Shdr *ec) const;
629  void LoadVersionMap() const;
630
631  /// @brief Get the relocation section that contains \a Rel.
632  const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
633    return getSection(Rel.d.a);
634  }
635
636public:
637  bool            isRelocationHasAddend(DataRefImpl Rel) const;
638  template<typename T>
639  const T        *getEntry(uint32_t Section, uint32_t Entry) const;
640  template<typename T>
641  const T        *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
642  const Elf_Shdr *getSection(DataRefImpl index) const;
643  const Elf_Shdr *getSection(uint32_t index) const;
644  const Elf_Rel  *getRel(DataRefImpl Rel) const;
645  const Elf_Rela *getRela(DataRefImpl Rela) const;
646  const char     *getString(uint32_t section, uint32_t offset) const;
647  const char     *getString(const Elf_Shdr *section, uint32_t offset) const;
648  error_code      getSymbolVersion(const Elf_Shdr *section,
649                                   const Elf_Sym *Symb,
650                                   StringRef &Version,
651                                   bool &IsDefault) const;
652  void VerifyStrTab(const Elf_Shdr *sh) const;
653
654protected:
655  const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
656  void            validateSymbol(DataRefImpl Symb) const;
657  StringRef       getRelocationTypeName(uint32_t Type) const;
658
659public:
660  error_code      getSymbolName(const Elf_Shdr *section,
661                                const Elf_Sym *Symb,
662                                StringRef &Res) const;
663  error_code      getSectionName(const Elf_Shdr *section,
664                                 StringRef &Res) const;
665  const Elf_Dyn  *getDyn(DataRefImpl DynData) const;
666  error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
667                              bool &IsDefault) const;
668  uint64_t getSymbolIndex(const Elf_Sym *sym) const;
669  error_code getRelocationAddend(DataRefImpl Rel, int64_t &Res) const;
670protected:
671  virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
672  virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
673  virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
674  virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
675  virtual error_code getSymbolAlignment(DataRefImpl Symb, uint32_t &Res) const;
676  virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
677  virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
678  virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
679  virtual error_code getSymbolType(DataRefImpl Symb,
680                                   SymbolRef::Type &Res) const;
681  virtual error_code getSymbolSection(DataRefImpl Symb,
682                                      section_iterator &Res) const;
683  virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
684
685  virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
686  virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
687
688  virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
689  virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
690  virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
691  virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
692  virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
693  virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
694  virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
695  virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
696  virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
697  virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
698                                                   bool &Res) const;
699  virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
700  virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
701  virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
702  virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
703                                           bool &Result) const;
704  virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
705  virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
706  virtual section_iterator getRelocatedSection(DataRefImpl Sec) const;
707
708  virtual error_code getRelocationNext(DataRefImpl Rel,
709                                       RelocationRef &Res) const;
710  virtual error_code getRelocationAddress(DataRefImpl Rel,
711                                          uint64_t &Res) const;
712  virtual error_code getRelocationOffset(DataRefImpl Rel,
713                                         uint64_t &Res) const;
714  virtual symbol_iterator getRelocationSymbol(DataRefImpl Rel) const;
715  virtual error_code getRelocationType(DataRefImpl Rel,
716                                       uint64_t &Res) const;
717  virtual error_code getRelocationTypeName(DataRefImpl Rel,
718                                           SmallVectorImpl<char> &Result) const;
719  virtual error_code getRelocationValueString(DataRefImpl Rel,
720                                           SmallVectorImpl<char> &Result) const;
721
722public:
723  ELFObjectFile(MemoryBuffer *Object, error_code &ec);
724
725  bool isMips64EL() const {
726    return Header->e_machine == ELF::EM_MIPS &&
727      Header->getFileClass() == ELF::ELFCLASS64 &&
728      Header->getDataEncoding() == ELF::ELFDATA2LSB;
729  }
730
731  virtual symbol_iterator begin_symbols() const;
732  virtual symbol_iterator end_symbols() const;
733
734  virtual symbol_iterator begin_dynamic_symbols() const;
735  virtual symbol_iterator end_dynamic_symbols() const;
736
737  virtual section_iterator begin_sections() const;
738  virtual section_iterator end_sections() const;
739
740  virtual library_iterator begin_libraries_needed() const;
741  virtual library_iterator end_libraries_needed() const;
742
743  const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
744    return getSection(DynamicSymbolTableIndex);
745  }
746
747  const Elf_Shdr *getDynamicStringTableSectionHeader() const {
748    return dot_dynstr_sec;
749  }
750
751  Elf_Dyn_iterator begin_dynamic_table() const;
752  /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
753  /// the section size.
754  Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
755
756  Elf_Sym_iterator begin_elf_dynamic_symbols() const {
757    const Elf_Shdr *DynSymtab = getDynamicSymbolTableSectionHeader();
758    if (DynSymtab)
759      return Elf_Sym_iterator(DynSymtab->sh_entsize,
760                              (const char *)base() + DynSymtab->sh_offset);
761    return Elf_Sym_iterator(0, 0);
762  }
763
764  Elf_Sym_iterator end_elf_dynamic_symbols() const {
765    const Elf_Shdr *DynSymtab = getDynamicSymbolTableSectionHeader();
766    if (DynSymtab)
767      return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
768                              DynSymtab->sh_offset + DynSymtab->sh_size);
769    return Elf_Sym_iterator(0, 0);
770  }
771
772  Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
773    return Elf_Rela_Iter(sec->sh_entsize,
774                         (const char *)(base() + sec->sh_offset));
775  }
776
777  Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
778    return Elf_Rela_Iter(sec->sh_entsize, (const char *)
779                         (base() + sec->sh_offset + sec->sh_size));
780  }
781
782  Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
783    return Elf_Rel_Iter(sec->sh_entsize,
784                        (const char *)(base() + sec->sh_offset));
785  }
786
787  Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
788    return Elf_Rel_Iter(sec->sh_entsize, (const char *)
789                        (base() + sec->sh_offset + sec->sh_size));
790  }
791
792  /// \brief Iterate over program header table.
793  typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
794
795  Elf_Phdr_Iter begin_program_headers() const {
796    return Elf_Phdr_Iter(Header->e_phentsize,
797                         (const char*)base() + Header->e_phoff);
798  }
799
800  Elf_Phdr_Iter end_program_headers() const {
801    return Elf_Phdr_Iter(Header->e_phentsize,
802                         (const char*)base() +
803                           Header->e_phoff +
804                           (Header->e_phnum * Header->e_phentsize));
805  }
806
807  virtual uint8_t getBytesInAddress() const;
808  virtual StringRef getFileFormatName() const;
809  virtual StringRef getObjectType() const { return "ELF"; }
810  virtual unsigned getArch() const;
811  virtual StringRef getLoadName() const;
812  virtual error_code getSectionContents(const Elf_Shdr *sec,
813                                        StringRef &Res) const;
814
815  uint64_t getNumSections() const;
816  uint64_t getStringTableIndex() const;
817  ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
818  const Elf_Ehdr *getElfHeader() const;
819  const Elf_Shdr *getSection(const Elf_Sym *symb) const;
820  const Elf_Shdr *getElfSection(section_iterator &It) const;
821  const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
822  const Elf_Sym *getElfSymbol(uint32_t index) const;
823
824  // Methods for type inquiry through isa, cast, and dyn_cast
825  bool isDyldType() const { return isDyldELFObject; }
826  static inline bool classof(const Binary *v) {
827    return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
828                                      ELFT::Is64Bits);
829  }
830};
831
832// Use an alignment of 2 for the typedefs since that is the worst case for
833// ELF files in archives.
834typedef ELFObjectFile<ELFType<support::little, 2, false> > ELF32LEObjectFile;
835typedef ELFObjectFile<ELFType<support::little, 2, true> > ELF64LEObjectFile;
836typedef ELFObjectFile<ELFType<support::big, 2, false> > ELF32BEObjectFile;
837typedef ELFObjectFile<ELFType<support::big, 2, true> > ELF64BEObjectFile;
838
839// Iterate through the version definitions, and place each Elf_Verdef
840// in the VersionMap according to its index.
841template<class ELFT>
842void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
843  unsigned vd_size = sec->sh_size; // Size of section in bytes
844  unsigned vd_count = sec->sh_info; // Number of Verdef entries
845  const char *sec_start = (const char*)base() + sec->sh_offset;
846  const char *sec_end = sec_start + vd_size;
847  // The first Verdef entry is at the start of the section.
848  const char *p = sec_start;
849  for (unsigned i = 0; i < vd_count; i++) {
850    if (p + sizeof(Elf_Verdef) > sec_end)
851      report_fatal_error("Section ended unexpectedly while scanning "
852                         "version definitions.");
853    const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
854    if (vd->vd_version != ELF::VER_DEF_CURRENT)
855      report_fatal_error("Unexpected verdef version");
856    size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
857    if (index >= VersionMap.size())
858      VersionMap.resize(index+1);
859    VersionMap[index] = VersionMapEntry(vd);
860    p += vd->vd_next;
861  }
862}
863
864// Iterate through the versions needed section, and place each Elf_Vernaux
865// in the VersionMap according to its index.
866template<class ELFT>
867void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
868  unsigned vn_size = sec->sh_size; // Size of section in bytes
869  unsigned vn_count = sec->sh_info; // Number of Verneed entries
870  const char *sec_start = (const char*)base() + sec->sh_offset;
871  const char *sec_end = sec_start + vn_size;
872  // The first Verneed entry is at the start of the section.
873  const char *p = sec_start;
874  for (unsigned i = 0; i < vn_count; i++) {
875    if (p + sizeof(Elf_Verneed) > sec_end)
876      report_fatal_error("Section ended unexpectedly while scanning "
877                         "version needed records.");
878    const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
879    if (vn->vn_version != ELF::VER_NEED_CURRENT)
880      report_fatal_error("Unexpected verneed version");
881    // Iterate through the Vernaux entries
882    const char *paux = p + vn->vn_aux;
883    for (unsigned j = 0; j < vn->vn_cnt; j++) {
884      if (paux + sizeof(Elf_Vernaux) > sec_end)
885        report_fatal_error("Section ended unexpected while scanning auxiliary "
886                           "version needed records.");
887      const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
888      size_t index = vna->vna_other & ELF::VERSYM_VERSION;
889      if (index >= VersionMap.size())
890        VersionMap.resize(index+1);
891      VersionMap[index] = VersionMapEntry(vna);
892      paux += vna->vna_next;
893    }
894    p += vn->vn_next;
895  }
896}
897
898template<class ELFT>
899void ELFObjectFile<ELFT>::LoadVersionMap() const {
900  // If there is no dynamic symtab or version table, there is nothing to do.
901  if (getDynamicStringTableSectionHeader() == NULL ||
902      dot_gnu_version_sec == NULL)
903    return;
904
905  // Has the VersionMap already been loaded?
906  if (VersionMap.size() > 0)
907    return;
908
909  // The first two version indexes are reserved.
910  // Index 0 is LOCAL, index 1 is GLOBAL.
911  VersionMap.push_back(VersionMapEntry());
912  VersionMap.push_back(VersionMapEntry());
913
914  if (dot_gnu_version_d_sec)
915    LoadVersionDefs(dot_gnu_version_d_sec);
916
917  if (dot_gnu_version_r_sec)
918    LoadVersionNeeds(dot_gnu_version_r_sec);
919}
920
921template<class ELFT>
922void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
923#ifndef NDEBUG
924  const Elf_Sym  *symb = getSymbol(Symb);
925  const Elf_Shdr *SymbolTableSection = getSection(Symb.d.b);
926  // FIXME: We really need to do proper error handling in the case of an invalid
927  //        input file. Because we don't use exceptions, I think we'll just pass
928  //        an error object around.
929  if (!(  symb
930        && SymbolTableSection
931        && symb >= (const Elf_Sym*)(base()
932                   + SymbolTableSection->sh_offset)
933        && symb <  (const Elf_Sym*)(base()
934                   + SymbolTableSection->sh_offset
935                   + SymbolTableSection->sh_size)))
936    // FIXME: Proper error handling.
937    report_fatal_error("Symb must point to a valid symbol!");
938#endif
939}
940
941template<class ELFT>
942error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
943                                              SymbolRef &Result) const {
944  validateSymbol(Symb);
945  ++Symb.d.a;
946  Result = SymbolRef(Symb, this);
947  return object_error::success;
948}
949
950template<class ELFT>
951error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
952                                              StringRef &Result) const {
953  validateSymbol(Symb);
954  const Elf_Sym *symb = getSymbol(Symb);
955  return getSymbolName(getSection(Symb.d.b), symb, Result);
956}
957
958template<class ELFT>
959error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
960                                                 StringRef &Version,
961                                                 bool &IsDefault) const {
962  DataRefImpl Symb = SymRef.getRawDataRefImpl();
963  validateSymbol(Symb);
964  const Elf_Sym *symb = getSymbol(Symb);
965  return getSymbolVersion(getSection(Symb.d.b), symb, Version, IsDefault);
966}
967
968template<class ELFT>
969ELF::Elf64_Word ELFObjectFile<ELFT>
970                             ::getSymbolTableIndex(const Elf_Sym *symb) const {
971  if (symb->st_shndx == ELF::SHN_XINDEX)
972    return ExtendedSymbolTable.lookup(symb);
973  return symb->st_shndx;
974}
975
976template<class ELFT>
977const typename ELFObjectFile<ELFT>::Elf_Shdr *
978ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
979  if (symb->st_shndx == ELF::SHN_XINDEX)
980    return getSection(ExtendedSymbolTable.lookup(symb));
981  if (symb->st_shndx >= ELF::SHN_LORESERVE)
982    return 0;
983  return getSection(symb->st_shndx);
984}
985
986template<class ELFT>
987const typename ELFObjectFile<ELFT>::Elf_Ehdr *
988ELFObjectFile<ELFT>::getElfHeader() const {
989  return Header;
990}
991
992template<class ELFT>
993const typename ELFObjectFile<ELFT>::Elf_Shdr *
994ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
995  llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
996  return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
997}
998
999template<class ELFT>
1000const typename ELFObjectFile<ELFT>::Elf_Sym *
1001ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
1002  return getSymbol(It->getRawDataRefImpl());
1003}
1004
1005template<class ELFT>
1006const typename ELFObjectFile<ELFT>::Elf_Sym *
1007ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
1008  DataRefImpl SymbolData;
1009  SymbolData.d.a = index;
1010  SymbolData.d.b = SymbolTableIndex;
1011  return getSymbol(SymbolData);
1012}
1013
1014template<class ELFT>
1015error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1016                                                    uint64_t &Result) const {
1017  validateSymbol(Symb);
1018  const Elf_Sym  *symb = getSymbol(Symb);
1019  const Elf_Shdr *Section;
1020  switch (getSymbolTableIndex(symb)) {
1021  case ELF::SHN_COMMON:
1022   // Unintialized symbols have no offset in the object file
1023  case ELF::SHN_UNDEF:
1024    Result = UnknownAddressOrSize;
1025    return object_error::success;
1026  case ELF::SHN_ABS:
1027    Result = symb->st_value;
1028    return object_error::success;
1029  default: Section = getSection(symb);
1030  }
1031
1032  switch (symb->getType()) {
1033  case ELF::STT_SECTION:
1034    Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1035    return object_error::success;
1036  case ELF::STT_FUNC:
1037  case ELF::STT_OBJECT:
1038  case ELF::STT_NOTYPE:
1039    Result = symb->st_value +
1040             (Section ? Section->sh_offset : 0);
1041    return object_error::success;
1042  default:
1043    Result = UnknownAddressOrSize;
1044    return object_error::success;
1045  }
1046}
1047
1048template<class ELFT>
1049error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1050                                                 uint64_t &Result) const {
1051  validateSymbol(Symb);
1052  const Elf_Sym  *symb = getSymbol(Symb);
1053  const Elf_Shdr *Section;
1054  switch (getSymbolTableIndex(symb)) {
1055  case ELF::SHN_COMMON:
1056  case ELF::SHN_UNDEF:
1057    Result = UnknownAddressOrSize;
1058    return object_error::success;
1059  case ELF::SHN_ABS:
1060    Result = symb->st_value;
1061    return object_error::success;
1062  default: Section = getSection(symb);
1063  }
1064
1065  switch (symb->getType()) {
1066  case ELF::STT_SECTION:
1067    Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1068    return object_error::success;
1069  case ELF::STT_FUNC:
1070  case ELF::STT_OBJECT:
1071  case ELF::STT_NOTYPE:
1072    bool IsRelocatable;
1073    switch(Header->e_type) {
1074    case ELF::ET_EXEC:
1075    case ELF::ET_DYN:
1076      IsRelocatable = false;
1077      break;
1078    default:
1079      IsRelocatable = true;
1080    }
1081    Result = symb->st_value;
1082
1083    // Clear the ARM/Thumb indicator flag.
1084    if (Header->e_machine == ELF::EM_ARM)
1085      Result &= ~1;
1086
1087    if (IsRelocatable && Section != 0)
1088      Result += Section->sh_addr;
1089    return object_error::success;
1090  default:
1091    Result = UnknownAddressOrSize;
1092    return object_error::success;
1093  }
1094}
1095
1096template<class ELFT>
1097error_code ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb,
1098                                                   uint32_t &Res) const {
1099  uint32_t flags;
1100  getSymbolFlags(Symb, flags);
1101  if (flags & SymbolRef::SF_Common) {
1102    uint64_t Value;
1103    getSymbolValue(Symb, Value);
1104    Res = Value;
1105  } else {
1106    Res = 0;
1107  }
1108  return object_error::success;
1109}
1110
1111template<class ELFT>
1112error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1113                                              uint64_t &Result) const {
1114  validateSymbol(Symb);
1115  const Elf_Sym  *symb = getSymbol(Symb);
1116  if (symb->st_size == 0)
1117    Result = UnknownAddressOrSize;
1118  Result = symb->st_size;
1119  return object_error::success;
1120}
1121
1122template<class ELFT>
1123error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1124                                                    char &Result) const {
1125  validateSymbol(Symb);
1126  const Elf_Sym  *symb = getSymbol(Symb);
1127  const Elf_Shdr *Section = getSection(symb);
1128
1129  char ret = '?';
1130
1131  if (Section) {
1132    switch (Section->sh_type) {
1133    case ELF::SHT_PROGBITS:
1134    case ELF::SHT_DYNAMIC:
1135      switch (Section->sh_flags) {
1136      case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1137        ret = 't'; break;
1138      case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1139        ret = 'd'; break;
1140      case ELF::SHF_ALLOC:
1141      case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1142      case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1143        ret = 'r'; break;
1144      }
1145      break;
1146    case ELF::SHT_NOBITS: ret = 'b';
1147    }
1148  }
1149
1150  switch (getSymbolTableIndex(symb)) {
1151  case ELF::SHN_UNDEF:
1152    if (ret == '?')
1153      ret = 'U';
1154    break;
1155  case ELF::SHN_ABS: ret = 'a'; break;
1156  case ELF::SHN_COMMON: ret = 'c'; break;
1157  }
1158
1159  switch (symb->getBinding()) {
1160  case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1161  case ELF::STB_WEAK:
1162    if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1163      ret = 'w';
1164    else
1165      if (symb->getType() == ELF::STT_OBJECT)
1166        ret = 'V';
1167      else
1168        ret = 'W';
1169  }
1170
1171  if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1172    StringRef name;
1173    if (error_code ec = getSymbolName(Symb, name))
1174      return ec;
1175    Result = StringSwitch<char>(name)
1176      .StartsWith(".debug", 'N')
1177      .StartsWith(".note", 'n')
1178      .Default('?');
1179    return object_error::success;
1180  }
1181
1182  Result = ret;
1183  return object_error::success;
1184}
1185
1186template<class ELFT>
1187error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1188                                              SymbolRef::Type &Result) const {
1189  validateSymbol(Symb);
1190  const Elf_Sym  *symb = getSymbol(Symb);
1191
1192  switch (symb->getType()) {
1193  case ELF::STT_NOTYPE:
1194    Result = SymbolRef::ST_Unknown;
1195    break;
1196  case ELF::STT_SECTION:
1197    Result = SymbolRef::ST_Debug;
1198    break;
1199  case ELF::STT_FILE:
1200    Result = SymbolRef::ST_File;
1201    break;
1202  case ELF::STT_FUNC:
1203    Result = SymbolRef::ST_Function;
1204    break;
1205  case ELF::STT_OBJECT:
1206  case ELF::STT_COMMON:
1207  case ELF::STT_TLS:
1208    Result = SymbolRef::ST_Data;
1209    break;
1210  default:
1211    Result = SymbolRef::ST_Other;
1212    break;
1213  }
1214  return object_error::success;
1215}
1216
1217template<class ELFT>
1218error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1219                                               uint32_t &Result) const {
1220  validateSymbol(Symb);
1221  const Elf_Sym  *symb = getSymbol(Symb);
1222
1223  Result = SymbolRef::SF_None;
1224
1225  if (symb->getBinding() != ELF::STB_LOCAL)
1226    Result |= SymbolRef::SF_Global;
1227
1228  if (symb->getBinding() == ELF::STB_WEAK)
1229    Result |= SymbolRef::SF_Weak;
1230
1231  if (symb->st_shndx == ELF::SHN_ABS)
1232    Result |= SymbolRef::SF_Absolute;
1233
1234  if (symb->getType() == ELF::STT_FILE ||
1235      symb->getType() == ELF::STT_SECTION)
1236    Result |= SymbolRef::SF_FormatSpecific;
1237
1238  if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1239    Result |= SymbolRef::SF_Undefined;
1240
1241  if (symb->getType() == ELF::STT_COMMON ||
1242      getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1243    Result |= SymbolRef::SF_Common;
1244
1245  if (symb->getType() == ELF::STT_TLS)
1246    Result |= SymbolRef::SF_ThreadLocal;
1247
1248  return object_error::success;
1249}
1250
1251template<class ELFT>
1252error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1253                                                 section_iterator &Res) const {
1254  validateSymbol(Symb);
1255  const Elf_Sym  *symb = getSymbol(Symb);
1256  const Elf_Shdr *sec = getSection(symb);
1257  if (!sec)
1258    Res = end_sections();
1259  else {
1260    DataRefImpl Sec;
1261    Sec.p = reinterpret_cast<intptr_t>(sec);
1262    Res = section_iterator(SectionRef(Sec, this));
1263  }
1264  return object_error::success;
1265}
1266
1267template<class ELFT>
1268error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1269                                               uint64_t &Val) const {
1270  validateSymbol(Symb);
1271  const Elf_Sym *symb = getSymbol(Symb);
1272  Val = symb->st_value;
1273  return object_error::success;
1274}
1275
1276template<class ELFT>
1277error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1278                                               SectionRef &Result) const {
1279  const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1280  sec += Header->e_shentsize;
1281  Sec.p = reinterpret_cast<intptr_t>(sec);
1282  Result = SectionRef(Sec, this);
1283  return object_error::success;
1284}
1285
1286template<class ELFT>
1287error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1288                                               StringRef &Result) const {
1289  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1290  Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1291  return object_error::success;
1292}
1293
1294template<class ELFT>
1295error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1296                                                  uint64_t &Result) const {
1297  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1298  Result = sec->sh_addr;
1299  return object_error::success;
1300}
1301
1302template<class ELFT>
1303error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1304                                               uint64_t &Result) const {
1305  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1306  Result = sec->sh_size;
1307  return object_error::success;
1308}
1309
1310template<class ELFT>
1311error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1312                                                   StringRef &Result) const {
1313  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1314  const char *start = (const char*)base() + sec->sh_offset;
1315  Result = StringRef(start, sec->sh_size);
1316  return object_error::success;
1317}
1318
1319template<class ELFT>
1320error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1321                                                   StringRef &Result) const {
1322  const char *start = (const char*)base() + Sec->sh_offset;
1323  Result = StringRef(start, Sec->sh_size);
1324  return object_error::success;
1325}
1326
1327template<class ELFT>
1328error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1329                                                    uint64_t &Result) const {
1330  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1331  Result = sec->sh_addralign;
1332  return object_error::success;
1333}
1334
1335template<class ELFT>
1336error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1337                                              bool &Result) const {
1338  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1339  if (sec->sh_flags & ELF::SHF_EXECINSTR)
1340    Result = true;
1341  else
1342    Result = false;
1343  return object_error::success;
1344}
1345
1346template<class ELFT>
1347error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1348                                              bool &Result) const {
1349  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1350  if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1351      && sec->sh_type == ELF::SHT_PROGBITS)
1352    Result = true;
1353  else
1354    Result = false;
1355  return object_error::success;
1356}
1357
1358template<class ELFT>
1359error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1360                                             bool &Result) const {
1361  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1362  if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1363      && sec->sh_type == ELF::SHT_NOBITS)
1364    Result = true;
1365  else
1366    Result = false;
1367  return object_error::success;
1368}
1369
1370template<class ELFT>
1371error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1372    DataRefImpl Sec, bool &Result) const {
1373  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1374  if (sec->sh_flags & ELF::SHF_ALLOC)
1375    Result = true;
1376  else
1377    Result = false;
1378  return object_error::success;
1379}
1380
1381template<class ELFT>
1382error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1383                                                 bool &Result) const {
1384  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1385  if (sec->sh_type == ELF::SHT_NOBITS)
1386    Result = true;
1387  else
1388    Result = false;
1389  return object_error::success;
1390}
1391
1392template<class ELFT>
1393error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1394                                                  bool &Result) const {
1395  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1396  // For ELF, all zero-init sections are virtual (that is, they occupy no space
1397  //   in the object image) and vice versa.
1398  Result = sec->sh_type == ELF::SHT_NOBITS;
1399  return object_error::success;
1400}
1401
1402template<class ELFT>
1403error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1404                                                      bool &Result) const {
1405  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1406  if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1407    Result = false;
1408  else
1409    Result = true;
1410  return object_error::success;
1411}
1412
1413template<class ELFT>
1414error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1415                                                      DataRefImpl Symb,
1416                                                      bool &Result) const {
1417  validateSymbol(Symb);
1418
1419  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1420  const Elf_Sym  *symb = getSymbol(Symb);
1421
1422  unsigned shndx = symb->st_shndx;
1423  bool Reserved = shndx >= ELF::SHN_LORESERVE
1424               && shndx <= ELF::SHN_HIRESERVE;
1425
1426  Result = !Reserved && (sec == getSection(symb->st_shndx));
1427  return object_error::success;
1428}
1429
1430template<class ELFT>
1431relocation_iterator
1432ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1433  DataRefImpl RelData;
1434  uintptr_t SHT = reinterpret_cast<uintptr_t>(SectionHeaderTable);
1435  RelData.d.a = (Sec.p - SHT) / Header->e_shentsize;
1436  RelData.d.b = 0;
1437  return relocation_iterator(RelocationRef(RelData, this));
1438}
1439
1440template<class ELFT>
1441relocation_iterator
1442ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1443  DataRefImpl RelData;
1444  uintptr_t SHT = reinterpret_cast<uintptr_t>(SectionHeaderTable);
1445  const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1446  RelData.d.a = (Sec.p - SHT) / Header->e_shentsize;
1447  if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
1448    RelData.d.b = 0;
1449  else
1450    RelData.d.b = S->sh_size / S->sh_entsize;
1451
1452  return relocation_iterator(RelocationRef(RelData, this));
1453}
1454
1455template <class ELFT>
1456section_iterator
1457ELFObjectFile<ELFT>::getRelocatedSection(DataRefImpl Sec) const {
1458  if (Header->e_type != ELF::ET_REL)
1459    return end_sections();
1460
1461  const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1462  unsigned sh_type = S->sh_type;
1463  if (sh_type != ELF::SHT_RELA && sh_type != ELF::SHT_REL)
1464    return end_sections();
1465
1466  assert(S->sh_info != 0);
1467  const Elf_Shdr *R = getSection(S->sh_info);
1468  DataRefImpl D;
1469  D.p = reinterpret_cast<uintptr_t>(R);
1470  return section_iterator(SectionRef(D, this));
1471}
1472
1473// Relocations
1474template<class ELFT>
1475error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1476                                                  RelocationRef &Result) const {
1477  ++Rel.d.b;
1478  Result = RelocationRef(Rel, this);
1479  return object_error::success;
1480}
1481
1482template <class ELFT>
1483symbol_iterator
1484ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel) const {
1485  uint32_t symbolIdx;
1486  const Elf_Shdr *sec = getRelSection(Rel);
1487  switch (sec->sh_type) {
1488    default :
1489      report_fatal_error("Invalid section type in Rel!");
1490    case ELF::SHT_REL : {
1491      symbolIdx = getRel(Rel)->getSymbol(isMips64EL());
1492      break;
1493    }
1494    case ELF::SHT_RELA : {
1495      symbolIdx = getRela(Rel)->getSymbol(isMips64EL());
1496      break;
1497    }
1498  }
1499  if (!symbolIdx)
1500    return end_symbols();
1501
1502  DataRefImpl SymbolData;
1503  SymbolData.d.a = symbolIdx;
1504  SymbolData.d.b = sec->sh_link;
1505  return symbol_iterator(SymbolRef(SymbolData, this));
1506}
1507
1508template<class ELFT>
1509error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1510                                                     uint64_t &Result) const {
1511  assert((Header->e_type == ELF::ET_EXEC || Header->e_type == ELF::ET_DYN) &&
1512         "Only executable and shared objects files have addresses");
1513  Result = getROffset(Rel);
1514  return object_error::success;
1515}
1516
1517template<class ELFT>
1518error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1519                                                    uint64_t &Result) const {
1520  assert(Header->e_type == ELF::ET_REL &&
1521         "Only relocatable object files have relocation offsets");
1522  Result = getROffset(Rel);
1523  return object_error::success;
1524}
1525
1526template<class ELFT>
1527uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const {
1528  const Elf_Shdr *sec = getRelSection(Rel);
1529  switch (sec->sh_type) {
1530  default:
1531    report_fatal_error("Invalid section type in Rel!");
1532  case ELF::SHT_REL:
1533    return getRel(Rel)->r_offset;
1534  case ELF::SHT_RELA:
1535    return getRela(Rel)->r_offset;
1536  }
1537}
1538
1539template<class ELFT>
1540error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1541                                                  uint64_t &Result) const {
1542  const Elf_Shdr *sec = getRelSection(Rel);
1543  switch (sec->sh_type) {
1544    default :
1545      report_fatal_error("Invalid section type in Rel!");
1546    case ELF::SHT_REL : {
1547      Result = getRel(Rel)->getType(isMips64EL());
1548      break;
1549    }
1550    case ELF::SHT_RELA : {
1551      Result = getRela(Rel)->getType(isMips64EL());
1552      break;
1553    }
1554  }
1555  return object_error::success;
1556}
1557
1558#define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1559  case ELF::enum: Res = #enum; break;
1560
1561template<class ELFT>
1562StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
1563  StringRef Res = "Unknown";
1564  switch (Header->e_machine) {
1565  case ELF::EM_X86_64:
1566    switch (Type) {
1567      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1568      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1569      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1570      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1571      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1572      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1573      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1574      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1575      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1576      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1577      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1578      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1579      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1580      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1581      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1582      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1583      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1584      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1585      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1586      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1587      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1588      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1589      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1590      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1591      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1592      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1593      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1594      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT64);
1595      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL64);
1596      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC64);
1597      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPLT64);
1598      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLTOFF64);
1599      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1600      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1601      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1602      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1603      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1604      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_IRELATIVE);
1605    default: break;
1606    }
1607    break;
1608  case ELF::EM_386:
1609    switch (Type) {
1610      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1611      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1612      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1613      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1614      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1615      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1616      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1617      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1618      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1619      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1620      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1621      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1622      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1623      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1624      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1625      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1626      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1627      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1628      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1629      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1630      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1631      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1632      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1633      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1634      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1635      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1636      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1637      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1638      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1639      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1640      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1641      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1642      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1643      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1644      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1645      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1646      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1647      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1648      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1649      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1650    default: break;
1651    }
1652    break;
1653  case ELF::EM_MIPS:
1654    switch (Type) {
1655      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1656      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1657      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1658      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1659      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1660      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1661      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1662      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1663      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1664      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1665      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1666      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1667      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1668      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1669      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1670      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1671      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1672      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1673      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1674      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1675      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1676      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1677      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1678      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1679      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1680      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1681      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1682      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1683      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1684      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1685      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1686      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1687      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1688      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1689      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1690      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1691      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1692      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1693      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1694      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1695      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1696      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1697      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1698      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1699      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1700      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1701      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1702      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1703      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1704      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1705      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1706      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NUM);
1707    default: break;
1708    }
1709    break;
1710  case ELF::EM_AARCH64:
1711    switch (Type) {
1712      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1713      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1714      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1715      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1716      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1717      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1718      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1719      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1720      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1721      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1722      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1723      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1724      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1725      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1726      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1727      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1728      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1729      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1730      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1731      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1732      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1733      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1734      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1735      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1736      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1737      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1738      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1739      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1740      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1741      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1742      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1743      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1744      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1745      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1746      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1747      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1748      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1749      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1750      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1751      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1752      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1753      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1754      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1755      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1756      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1757      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1758      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1759      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1760      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1761      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1762      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1763      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1764      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1765      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1766      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1767      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1768      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1769      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1770      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1771      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1772      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1773      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1774      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1775      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1776      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1777      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1778      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1779      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1780      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1781      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1782      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1783      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1784      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1785    default: break;
1786    }
1787    break;
1788  case ELF::EM_ARM:
1789    switch (Type) {
1790      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1791      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1792      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1793      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1794      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1795      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1796      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1797      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1798      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1799      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1800      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1801      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1802      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1803      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1804      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1805      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1806      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1807      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1808      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1809      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1810      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1811      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1812      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1813      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1814      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1815      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1816      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1817      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1818      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1819      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1820      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1821      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1822      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1823      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1824      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1825      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1826      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1827      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1828      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1829      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1830      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1831      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1832      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1833      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1834      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1835      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1836      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1837      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1838      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1839      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1840      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1841      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1842      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1843      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1844      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1845      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1846      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1847      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1848      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1849      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1850      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1851      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1852      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1853      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1854      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1855      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1856      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1857      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1858      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1859      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1860      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1861      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1862      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1863      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1864      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1865      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1866      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1867      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1868      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1869      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1870      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1871      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1872      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1873      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1874      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1875      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1876      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1877      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1878      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1879      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1880      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1881      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1882      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1883      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1884      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1885      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1886      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1887      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1888      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1889      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1890      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1891      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1892      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1893      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1894      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1895      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1896      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1897      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1898      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1899      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1900      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1901      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1902      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1903      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1904      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1905      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1906      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1907      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1908      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1909      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1910      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1911      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1912      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1913      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1914      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1915      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1916      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1917      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1918      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1919      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1920      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1921    default: break;
1922    }
1923    break;
1924  case ELF::EM_HEXAGON:
1925    switch (Type) {
1926      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1927      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1928      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1929      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1930      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1931      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1932      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1933      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1934      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1935      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1936      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1937      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1938      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1939      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1940      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1941      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1942      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1943      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1944      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1945      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1946      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1947      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1948      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1949      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1950      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1951      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1952      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1953      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1954      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1955      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1956      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1957      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1958      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1959      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1960      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1961      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1962      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1963      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1964      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1965      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1966      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1967      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1968      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1969      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1970      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1971      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1972      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1973      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1974      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1975      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1976      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1977      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1978      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1979      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1980      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1981      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1982      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1983      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1984      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1985      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1986      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1987      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1988      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1989      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1990      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1991      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1992      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1993      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1994      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1995      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1996      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1997      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1998      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1999      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2000      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2001      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2002      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2003      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2004      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2005      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2006      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2007      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2008      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2009      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2010      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2011      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2012    default: break;
2013    }
2014    break;
2015  case ELF::EM_PPC:
2016    switch (Type) {
2017      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_NONE);
2018      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR32);
2019      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR24);
2020      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16);
2021      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_LO);
2022      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HI);
2023      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HA);
2024      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14);
2025      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRTAKEN);
2026      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRNTAKEN);
2027      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL24);
2028      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14);
2029      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRTAKEN);
2030      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRNTAKEN);
2031      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16);
2032      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_LO);
2033      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HI);
2034      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HA);
2035      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32);
2036      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16);
2037      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_LO);
2038      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HI);
2039      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HA);
2040      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16);
2041      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_LO);
2042      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_HI);
2043      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_HA);
2044      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16);
2045      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_LO);
2046      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_HI);
2047      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_HA);
2048      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16);
2049      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_LO);
2050      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_HI);
2051      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_HA);
2052      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_DS);
2053      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_LO_DS);
2054      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_HI);
2055      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_HA);
2056      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_DS);
2057      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_LO_DS);
2058      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_HI);
2059      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_HA);
2060      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16);
2061      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_LO);
2062      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_HI);
2063      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_HA);
2064    default: break;
2065    }
2066    break;
2067  case ELF::EM_PPC64:
2068    switch (Type) {
2069      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_NONE);
2070      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR32);
2071      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR24);
2072      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16);
2073      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO);
2074      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HI);
2075      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HA);
2076      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14);
2077      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14_BRTAKEN);
2078      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14_BRNTAKEN);
2079      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL24);
2080      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14);
2081      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14_BRTAKEN);
2082      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14_BRNTAKEN);
2083      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16);
2084      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_LO);
2085      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_HI);
2086      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_HA);
2087      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32);
2088      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64);
2089      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER);
2090      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHERA);
2091      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST);
2092      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHESTA);
2093      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64);
2094      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16);
2095      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO);
2096      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HI);
2097      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA);
2098      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC);
2099      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS);
2100      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO_DS);
2101      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_DS);
2102      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_LO_DS);
2103      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_DS);
2104      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO_DS);
2105      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLS);
2106      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16);
2107      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO);
2108      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HI);
2109      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HA);
2110      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16);
2111      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO);
2112      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HI);
2113      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HA);
2114      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16);
2115      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_LO);
2116      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HI);
2117      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HA);
2118      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16);
2119      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_LO);
2120      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HI);
2121      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HA);
2122      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_DS);
2123      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_LO_DS);
2124      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HI);
2125      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HA);
2126      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_DS);
2127      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_LO_DS);
2128      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_HI);
2129      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_HA);
2130      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_DS);
2131      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO_DS);
2132      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHER);
2133      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHERA);
2134      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHEST);
2135      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHESTA);
2136      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_DS);
2137      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO_DS);
2138      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHER);
2139      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHERA);
2140      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHEST);
2141      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHESTA);
2142      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSGD);
2143      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSLD);
2144      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16);
2145      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_LO);
2146      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_HI);
2147      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_HA);
2148    default: break;
2149    }
2150    break;
2151  case ELF::EM_S390:
2152    switch (Type) {
2153      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_NONE);
2154      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_8);
2155      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_12);
2156      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_16);
2157      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_32);
2158      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32);
2159      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT12);
2160      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT32);
2161      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32);
2162      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_COPY);
2163      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GLOB_DAT);
2164      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_JMP_SLOT);
2165      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_RELATIVE);
2166      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF);
2167      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPC);
2168      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT16);
2169      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16);
2170      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16DBL);
2171      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT16DBL);
2172      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32DBL);
2173      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32DBL);
2174      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPCDBL);
2175      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_64);
2176      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC64);
2177      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT64);
2178      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT64);
2179      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTENT);
2180      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF16);
2181      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF64);
2182      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT12);
2183      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT16);
2184      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT32);
2185      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT64);
2186      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLTENT);
2187      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF16);
2188      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF32);
2189      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF64);
2190      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LOAD);
2191      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GDCALL);
2192      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDCALL);
2193      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD32);
2194      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD64);
2195      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE12);
2196      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE32);
2197      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE64);
2198      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM32);
2199      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM64);
2200      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE32);
2201      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE64);
2202      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IEENT);
2203      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE32);
2204      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE64);
2205      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO32);
2206      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO64);
2207      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPMOD);
2208      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPOFF);
2209      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_TPOFF);
2210      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_20);
2211      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT20);
2212      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT20);
2213      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE20);
2214      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_IRELATIVE);
2215    default: break;
2216    }
2217    break;
2218  default: break;
2219  }
2220  return Res;
2221}
2222
2223#undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2224
2225template<class ELFT>
2226error_code ELFObjectFile<ELFT>::getRelocationTypeName(
2227    DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2228  const Elf_Shdr *sec = getRelSection(Rel);
2229  uint32_t type;
2230  switch (sec->sh_type) {
2231    default :
2232      return object_error::parse_failed;
2233    case ELF::SHT_REL : {
2234      type = getRel(Rel)->getType(isMips64EL());
2235      break;
2236    }
2237    case ELF::SHT_RELA : {
2238      type = getRela(Rel)->getType(isMips64EL());
2239      break;
2240    }
2241  }
2242
2243  if (!isMips64EL()) {
2244    StringRef Name = getRelocationTypeName(type);
2245    Result.append(Name.begin(), Name.end());
2246  } else {
2247    uint8_t Type1 = (type >>  0) & 0xFF;
2248    uint8_t Type2 = (type >>  8) & 0xFF;
2249    uint8_t Type3 = (type >> 16) & 0xFF;
2250
2251    // Concat all three relocation type names.
2252    StringRef Name = getRelocationTypeName(Type1);
2253    Result.append(Name.begin(), Name.end());
2254
2255    Name = getRelocationTypeName(Type2);
2256    Result.append(1, '/');
2257    Result.append(Name.begin(), Name.end());
2258
2259    Name = getRelocationTypeName(Type3);
2260    Result.append(1, '/');
2261    Result.append(Name.begin(), Name.end());
2262  }
2263
2264  return object_error::success;
2265}
2266
2267template<class ELFT>
2268error_code ELFObjectFile<ELFT>::getRelocationAddend(
2269    DataRefImpl Rel, int64_t &Result) const {
2270  const Elf_Shdr *sec = getRelSection(Rel);
2271  switch (sec->sh_type) {
2272    default :
2273      report_fatal_error("Invalid section type in Rel!");
2274    case ELF::SHT_REL : {
2275      Result = 0;
2276      return object_error::success;
2277    }
2278    case ELF::SHT_RELA : {
2279      Result = getRela(Rel)->r_addend;
2280      return object_error::success;
2281    }
2282  }
2283}
2284
2285template<class ELFT>
2286error_code ELFObjectFile<ELFT>::getRelocationValueString(
2287    DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2288  const Elf_Shdr *sec = getRelSection(Rel);
2289  uint8_t type;
2290  StringRef res;
2291  int64_t addend = 0;
2292  uint16_t symbol_index = 0;
2293  switch (sec->sh_type) {
2294    default:
2295      return object_error::parse_failed;
2296    case ELF::SHT_REL: {
2297      type = getRel(Rel)->getType(isMips64EL());
2298      symbol_index = getRel(Rel)->getSymbol(isMips64EL());
2299      // TODO: Read implicit addend from section data.
2300      break;
2301    }
2302    case ELF::SHT_RELA: {
2303      type = getRela(Rel)->getType(isMips64EL());
2304      symbol_index = getRela(Rel)->getSymbol(isMips64EL());
2305      addend = getRela(Rel)->r_addend;
2306      break;
2307    }
2308  }
2309  const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2310  StringRef symname;
2311  if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2312    return ec;
2313  switch (Header->e_machine) {
2314  case ELF::EM_X86_64:
2315    switch (type) {
2316    case ELF::R_X86_64_PC8:
2317    case ELF::R_X86_64_PC16:
2318    case ELF::R_X86_64_PC32: {
2319        std::string fmtbuf;
2320        raw_string_ostream fmt(fmtbuf);
2321        fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2322        fmt.flush();
2323        Result.append(fmtbuf.begin(), fmtbuf.end());
2324      }
2325      break;
2326    case ELF::R_X86_64_8:
2327    case ELF::R_X86_64_16:
2328    case ELF::R_X86_64_32:
2329    case ELF::R_X86_64_32S:
2330    case ELF::R_X86_64_64: {
2331        std::string fmtbuf;
2332        raw_string_ostream fmt(fmtbuf);
2333        fmt << symname << (addend < 0 ? "" : "+") << addend;
2334        fmt.flush();
2335        Result.append(fmtbuf.begin(), fmtbuf.end());
2336      }
2337      break;
2338    default:
2339      res = "Unknown";
2340    }
2341    break;
2342  case ELF::EM_AARCH64: {
2343    std::string fmtbuf;
2344    raw_string_ostream fmt(fmtbuf);
2345    fmt << symname;
2346    if (addend != 0)
2347      fmt << (addend < 0 ? "" : "+") << addend;
2348    fmt.flush();
2349    Result.append(fmtbuf.begin(), fmtbuf.end());
2350    break;
2351  }
2352  case ELF::EM_ARM:
2353  case ELF::EM_HEXAGON:
2354    res = symname;
2355    break;
2356  default:
2357    res = "Unknown";
2358  }
2359  if (Result.empty())
2360    Result.append(res.begin(), res.end());
2361  return object_error::success;
2362}
2363
2364// Verify that the last byte in the string table in a null.
2365template<class ELFT>
2366void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2367  const char *strtab = (const char*)base() + sh->sh_offset;
2368  if (strtab[sh->sh_size - 1] != 0)
2369    // FIXME: Proper error handling.
2370    report_fatal_error("String table must end with a null terminator!");
2371}
2372
2373template<class ELFT>
2374ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2375  : ObjectFile(getELFType(
2376      static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2377      ELFT::Is64Bits),
2378      Object)
2379  , isDyldELFObject(false)
2380  , SectionHeaderTable(0)
2381  , dot_shstrtab_sec(0)
2382  , dot_strtab_sec(0)
2383  , dot_dynstr_sec(0)
2384  , dot_dynamic_sec(0)
2385  , dot_gnu_version_sec(0)
2386  , dot_gnu_version_r_sec(0)
2387  , dot_gnu_version_d_sec(0)
2388  , dt_soname(0)
2389 {
2390
2391  const uint64_t FileSize = Data->getBufferSize();
2392
2393  if (sizeof(Elf_Ehdr) > FileSize)
2394    // FIXME: Proper error handling.
2395    report_fatal_error("File too short!");
2396
2397  Header = reinterpret_cast<const Elf_Ehdr *>(base());
2398
2399  if (Header->e_shoff == 0)
2400    return;
2401
2402  const uint64_t SectionTableOffset = Header->e_shoff;
2403
2404  if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2405    // FIXME: Proper error handling.
2406    report_fatal_error("Section header table goes past end of file!");
2407
2408  // The getNumSections() call below depends on SectionHeaderTable being set.
2409  SectionHeaderTable =
2410    reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2411  const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2412
2413  if (SectionTableOffset + SectionTableSize > FileSize)
2414    // FIXME: Proper error handling.
2415    report_fatal_error("Section table goes past end of file!");
2416
2417  // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2418  const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2419  const Elf_Shdr* sh = SectionHeaderTable;
2420
2421  SymbolTableIndex = -1;
2422  DynamicSymbolTableIndex = -1;
2423
2424  for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2425    switch (sh->sh_type) {
2426    case ELF::SHT_SYMTAB_SHNDX: {
2427      if (SymbolTableSectionHeaderIndex)
2428        // FIXME: Proper error handling.
2429        report_fatal_error("More than one .symtab_shndx!");
2430      SymbolTableSectionHeaderIndex = sh;
2431      break;
2432    }
2433    case ELF::SHT_SYMTAB: {
2434      if (SymbolTableIndex != -1)
2435        report_fatal_error("More than one SHT_SYMTAB!");
2436      SymbolTableIndex = i;
2437      break;
2438    }
2439    case ELF::SHT_DYNSYM: {
2440      if (DynamicSymbolTableIndex != -1)
2441        // FIXME: Proper error handling.
2442        report_fatal_error("More than one SHT_DYNSYM!");
2443      DynamicSymbolTableIndex = i;
2444      break;
2445    }
2446    case ELF::SHT_REL:
2447    case ELF::SHT_RELA:
2448      break;
2449    case ELF::SHT_DYNAMIC: {
2450      if (dot_dynamic_sec != NULL)
2451        // FIXME: Proper error handling.
2452        report_fatal_error("More than one .dynamic!");
2453      dot_dynamic_sec = sh;
2454      break;
2455    }
2456    case ELF::SHT_GNU_versym: {
2457      if (dot_gnu_version_sec != NULL)
2458        // FIXME: Proper error handling.
2459        report_fatal_error("More than one .gnu.version section!");
2460      dot_gnu_version_sec = sh;
2461      break;
2462    }
2463    case ELF::SHT_GNU_verdef: {
2464      if (dot_gnu_version_d_sec != NULL)
2465        // FIXME: Proper error handling.
2466        report_fatal_error("More than one .gnu.version_d section!");
2467      dot_gnu_version_d_sec = sh;
2468      break;
2469    }
2470    case ELF::SHT_GNU_verneed: {
2471      if (dot_gnu_version_r_sec != NULL)
2472        // FIXME: Proper error handling.
2473        report_fatal_error("More than one .gnu.version_r section!");
2474      dot_gnu_version_r_sec = sh;
2475      break;
2476    }
2477    }
2478    ++sh;
2479  }
2480
2481  // Get string table sections.
2482  dot_shstrtab_sec = getSection(getStringTableIndex());
2483  if (dot_shstrtab_sec) {
2484    // Verify that the last byte in the string table in a null.
2485    VerifyStrTab(dot_shstrtab_sec);
2486  }
2487
2488  // Merge this into the above loop.
2489  for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2490                  *e = i + getNumSections() * Header->e_shentsize;
2491                   i != e; i += Header->e_shentsize) {
2492    const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2493    if (sh->sh_type == ELF::SHT_STRTAB) {
2494      StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2495      if (SectionName == ".strtab") {
2496        if (dot_strtab_sec != 0)
2497          // FIXME: Proper error handling.
2498          report_fatal_error("Already found section named .strtab!");
2499        dot_strtab_sec = sh;
2500        VerifyStrTab(dot_strtab_sec);
2501      } else if (SectionName == ".dynstr") {
2502        if (dot_dynstr_sec != 0)
2503          // FIXME: Proper error handling.
2504          report_fatal_error("Already found section named .dynstr!");
2505        dot_dynstr_sec = sh;
2506        VerifyStrTab(dot_dynstr_sec);
2507      }
2508    }
2509  }
2510
2511  // Build symbol name side-mapping if there is one.
2512  if (SymbolTableSectionHeaderIndex) {
2513    const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2514                                      SymbolTableSectionHeaderIndex->sh_offset);
2515    error_code ec;
2516    for (symbol_iterator si = begin_symbols(),
2517                         se = end_symbols(); si != se; si.increment(ec)) {
2518      if (ec)
2519        report_fatal_error("Fewer extended symbol table entries than symbols!");
2520      if (*ShndxTable != ELF::SHN_UNDEF)
2521        ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2522      ++ShndxTable;
2523    }
2524  }
2525}
2526
2527// Get the symbol table index in the symtab section given a symbol
2528template<class ELFT>
2529uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2530  const Elf_Shdr *SymTab = getSection(SymbolTableIndex);
2531  uintptr_t SymLoc = uintptr_t(Sym);
2532  uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2533  assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2534  uint64_t SymOffset = SymLoc - SymTabLoc;
2535  assert(SymOffset % SymTab->sh_entsize == 0 &&
2536         "Symbol not multiple of symbol size!");
2537  return SymOffset / SymTab->sh_entsize;
2538}
2539
2540template<class ELFT>
2541symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2542  DataRefImpl SymbolData;
2543  if (SymbolTableIndex == -1) {
2544    SymbolData.d.a = 0;
2545    SymbolData.d.b = 0;
2546  } else {
2547    SymbolData.d.a = 0;
2548    SymbolData.d.b = SymbolTableIndex;
2549  }
2550  return symbol_iterator(SymbolRef(SymbolData, this));
2551}
2552
2553template<class ELFT>
2554symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2555  DataRefImpl SymbolData;
2556  if (SymbolTableIndex == -1) {
2557    SymbolData.d.a = 0;
2558    SymbolData.d.b = 0;
2559  } else {
2560    const Elf_Shdr *SymbolTableSection = getSection(SymbolTableIndex);
2561    SymbolData.d.a = SymbolTableSection->getEntityCount();
2562    SymbolData.d.b = SymbolTableIndex;
2563  }
2564  return symbol_iterator(SymbolRef(SymbolData, this));
2565}
2566
2567template<class ELFT>
2568symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2569  DataRefImpl SymbolData;
2570  if (DynamicSymbolTableIndex == -1) {
2571    SymbolData.d.a = 0;
2572    SymbolData.d.b = 0;
2573  } else {
2574    SymbolData.d.a = 0;
2575    SymbolData.d.b = DynamicSymbolTableIndex;
2576  }
2577  return symbol_iterator(SymbolRef(SymbolData, this));
2578}
2579
2580template<class ELFT>
2581symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2582  DataRefImpl SymbolData;
2583  if (DynamicSymbolTableIndex == -1) {
2584    SymbolData.d.a = 0;
2585    SymbolData.d.b = 0;
2586  } else {
2587    const Elf_Shdr *SymbolTableSection = getSection(DynamicSymbolTableIndex);
2588    SymbolData.d.a = SymbolTableSection->getEntityCount();
2589    SymbolData.d.b = DynamicSymbolTableIndex;
2590  }
2591  return symbol_iterator(SymbolRef(SymbolData, this));
2592}
2593
2594template<class ELFT>
2595section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2596  DataRefImpl ret;
2597  ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2598  return section_iterator(SectionRef(ret, this));
2599}
2600
2601template<class ELFT>
2602section_iterator ELFObjectFile<ELFT>::end_sections() const {
2603  DataRefImpl ret;
2604  ret.p = reinterpret_cast<intptr_t>(base()
2605                                     + Header->e_shoff
2606                                     + (Header->e_shentsize*getNumSections()));
2607  return section_iterator(SectionRef(ret, this));
2608}
2609
2610template<class ELFT>
2611typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2612ELFObjectFile<ELFT>::begin_dynamic_table() const {
2613  if (dot_dynamic_sec)
2614    return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2615                            (const char *)base() + dot_dynamic_sec->sh_offset);
2616  return Elf_Dyn_iterator(0, 0);
2617}
2618
2619template<class ELFT>
2620typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2621ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2622  if (dot_dynamic_sec) {
2623    Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2624                         (const char *)base() + dot_dynamic_sec->sh_offset +
2625                         dot_dynamic_sec->sh_size);
2626
2627    if (NULLEnd) {
2628      Elf_Dyn_iterator Start = begin_dynamic_table();
2629      while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2630        ++Start;
2631
2632      // Include the DT_NULL.
2633      if (Start != Ret)
2634        ++Start;
2635      Ret = Start;
2636    }
2637    return Ret;
2638  }
2639  return Elf_Dyn_iterator(0, 0);
2640}
2641
2642template<class ELFT>
2643StringRef ELFObjectFile<ELFT>::getLoadName() const {
2644  if (!dt_soname) {
2645    // Find the DT_SONAME entry
2646    Elf_Dyn_iterator it = begin_dynamic_table();
2647    Elf_Dyn_iterator ie = end_dynamic_table();
2648    while (it != ie && it->getTag() != ELF::DT_SONAME)
2649      ++it;
2650
2651    if (it != ie) {
2652      if (dot_dynstr_sec == NULL)
2653        report_fatal_error("Dynamic string table is missing");
2654      dt_soname = getString(dot_dynstr_sec, it->getVal());
2655    } else {
2656      dt_soname = "";
2657    }
2658  }
2659  return dt_soname;
2660}
2661
2662template<class ELFT>
2663library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2664  // Find the first DT_NEEDED entry
2665  Elf_Dyn_iterator i = begin_dynamic_table();
2666  Elf_Dyn_iterator e = end_dynamic_table();
2667  while (i != e && i->getTag() != ELF::DT_NEEDED)
2668    ++i;
2669
2670  DataRefImpl DRI;
2671  DRI.p = reinterpret_cast<uintptr_t>(i.get());
2672  return library_iterator(LibraryRef(DRI, this));
2673}
2674
2675template<class ELFT>
2676error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2677                                               LibraryRef &Result) const {
2678  // Use the same DataRefImpl format as DynRef.
2679  Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2680                                        reinterpret_cast<const char *>(Data.p));
2681  Elf_Dyn_iterator e = end_dynamic_table();
2682
2683  // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2684  do
2685    ++i;
2686  while (i != e && i->getTag() != ELF::DT_NEEDED);
2687
2688  DataRefImpl DRI;
2689  DRI.p = reinterpret_cast<uintptr_t>(i.get());
2690  Result = LibraryRef(DRI, this);
2691  return object_error::success;
2692}
2693
2694template<class ELFT>
2695error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2696                                               StringRef &Res) const {
2697  Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2698                                        reinterpret_cast<const char *>(Data.p));
2699  if (i == end_dynamic_table())
2700    report_fatal_error("getLibraryPath() called on iterator end");
2701
2702  if (i->getTag() != ELF::DT_NEEDED)
2703    report_fatal_error("Invalid library_iterator");
2704
2705  // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2706  // THis works as long as DT_STRTAB == .dynstr. This is true most of
2707  // the time, but the specification allows exceptions.
2708  // TODO: This should really use DT_STRTAB instead. Doing this requires
2709  // reading the program headers.
2710  if (dot_dynstr_sec == NULL)
2711    report_fatal_error("Dynamic string table is missing");
2712  Res = getString(dot_dynstr_sec, i->getVal());
2713  return object_error::success;
2714}
2715
2716template<class ELFT>
2717library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2718  Elf_Dyn_iterator e = end_dynamic_table();
2719  DataRefImpl DRI;
2720  DRI.p = reinterpret_cast<uintptr_t>(e.get());
2721  return library_iterator(LibraryRef(DRI, this));
2722}
2723
2724template<class ELFT>
2725uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2726  return ELFT::Is64Bits ? 8 : 4;
2727}
2728
2729template<class ELFT>
2730StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2731  switch(Header->e_ident[ELF::EI_CLASS]) {
2732  case ELF::ELFCLASS32:
2733    switch(Header->e_machine) {
2734    case ELF::EM_386:
2735      return "ELF32-i386";
2736    case ELF::EM_X86_64:
2737      return "ELF32-x86-64";
2738    case ELF::EM_ARM:
2739      return "ELF32-arm";
2740    case ELF::EM_HEXAGON:
2741      return "ELF32-hexagon";
2742    case ELF::EM_MIPS:
2743      return "ELF32-mips";
2744    case ELF::EM_PPC:
2745      return "ELF32-ppc";
2746    default:
2747      return "ELF32-unknown";
2748    }
2749  case ELF::ELFCLASS64:
2750    switch(Header->e_machine) {
2751    case ELF::EM_386:
2752      return "ELF64-i386";
2753    case ELF::EM_X86_64:
2754      return "ELF64-x86-64";
2755    case ELF::EM_AARCH64:
2756      return "ELF64-aarch64";
2757    case ELF::EM_PPC64:
2758      return "ELF64-ppc64";
2759    case ELF::EM_S390:
2760      return "ELF64-s390";
2761    default:
2762      return "ELF64-unknown";
2763    }
2764  default:
2765    // FIXME: Proper error handling.
2766    report_fatal_error("Invalid ELFCLASS!");
2767  }
2768}
2769
2770template<class ELFT>
2771unsigned ELFObjectFile<ELFT>::getArch() const {
2772  switch(Header->e_machine) {
2773  case ELF::EM_386:
2774    return Triple::x86;
2775  case ELF::EM_X86_64:
2776    return Triple::x86_64;
2777  case ELF::EM_AARCH64:
2778    return Triple::aarch64;
2779  case ELF::EM_ARM:
2780    return Triple::arm;
2781  case ELF::EM_HEXAGON:
2782    return Triple::hexagon;
2783  case ELF::EM_MIPS:
2784    return (ELFT::TargetEndianness == support::little) ?
2785           Triple::mipsel : Triple::mips;
2786  case ELF::EM_PPC64:
2787    return Triple::ppc64;
2788  case ELF::EM_S390:
2789    return Triple::systemz;
2790  default:
2791    return Triple::UnknownArch;
2792  }
2793}
2794
2795template<class ELFT>
2796uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2797  assert(Header && "Header not initialized!");
2798  if (Header->e_shnum == ELF::SHN_UNDEF) {
2799    assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2800    return SectionHeaderTable->sh_size;
2801  }
2802  return Header->e_shnum;
2803}
2804
2805template<class ELFT>
2806uint64_t
2807ELFObjectFile<ELFT>::getStringTableIndex() const {
2808  if (Header->e_shnum == ELF::SHN_UNDEF) {
2809    if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2810      return SectionHeaderTable->sh_link;
2811    if (Header->e_shstrndx >= getNumSections())
2812      return 0;
2813  }
2814  return Header->e_shstrndx;
2815}
2816
2817template<class ELFT>
2818template<typename T>
2819inline const T *
2820ELFObjectFile<ELFT>::getEntry(uint32_t Section, uint32_t Entry) const {
2821  return getEntry<T>(getSection(Section), Entry);
2822}
2823
2824template<class ELFT>
2825template<typename T>
2826inline const T *
2827ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2828  return reinterpret_cast<const T *>(
2829           base()
2830           + Section->sh_offset
2831           + (Entry * Section->sh_entsize));
2832}
2833
2834template<class ELFT>
2835const typename ELFObjectFile<ELFT>::Elf_Sym *
2836ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2837  return getEntry<Elf_Sym>(Symb.d.b, Symb.d.a);
2838}
2839
2840template<class ELFT>
2841const typename ELFObjectFile<ELFT>::Elf_Rel *
2842ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2843  return getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
2844}
2845
2846template<class ELFT>
2847const typename ELFObjectFile<ELFT>::Elf_Rela *
2848ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2849  return getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
2850}
2851
2852template<class ELFT>
2853const typename ELFObjectFile<ELFT>::Elf_Shdr *
2854ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2855  const Elf_Shdr *sec = getSection(Symb.d.b);
2856  if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2857    // FIXME: Proper error handling.
2858    report_fatal_error("Invalid symbol table section!");
2859  return sec;
2860}
2861
2862template<class ELFT>
2863const typename ELFObjectFile<ELFT>::Elf_Shdr *
2864ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2865  if (index == 0)
2866    return 0;
2867  if (!SectionHeaderTable || index >= getNumSections())
2868    // FIXME: Proper error handling.
2869    report_fatal_error("Invalid section index!");
2870
2871  return reinterpret_cast<const Elf_Shdr *>(
2872         reinterpret_cast<const char *>(SectionHeaderTable)
2873         + (index * Header->e_shentsize));
2874}
2875
2876template<class ELFT>
2877const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2878                                           ELF::Elf32_Word offset) const {
2879  return getString(getSection(section), offset);
2880}
2881
2882template<class ELFT>
2883const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2884                                           ELF::Elf32_Word offset) const {
2885  assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2886  if (offset >= section->sh_size)
2887    // FIXME: Proper error handling.
2888    report_fatal_error("Symbol name offset outside of string table!");
2889  return (const char *)base() + section->sh_offset + offset;
2890}
2891
2892template<class ELFT>
2893error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2894                                              const Elf_Sym *symb,
2895                                              StringRef &Result) const {
2896  if (symb->st_name == 0) {
2897    const Elf_Shdr *section = getSection(symb);
2898    if (!section)
2899      Result = "";
2900    else
2901      Result = getString(dot_shstrtab_sec, section->sh_name);
2902    return object_error::success;
2903  }
2904
2905  if (DynamicSymbolTableIndex != -1 &&
2906      section == getSection(DynamicSymbolTableIndex)) {
2907    // Symbol is in .dynsym, use .dynstr string table
2908    Result = getString(dot_dynstr_sec, symb->st_name);
2909  } else {
2910    // Use the default symbol table name section.
2911    Result = getString(dot_strtab_sec, symb->st_name);
2912  }
2913  return object_error::success;
2914}
2915
2916template<class ELFT>
2917error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2918                                               StringRef &Result) const {
2919  Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2920  return object_error::success;
2921}
2922
2923template<class ELFT>
2924error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2925                                                 const Elf_Sym *symb,
2926                                                 StringRef &Version,
2927                                                 bool &IsDefault) const {
2928  // Handle non-dynamic symbols.
2929  if (section != getSection(DynamicSymbolTableIndex)) {
2930    // Non-dynamic symbols can have versions in their names
2931    // A name of the form 'foo@V1' indicates version 'V1', non-default.
2932    // A name of the form 'foo@@V2' indicates version 'V2', default version.
2933    StringRef Name;
2934    error_code ec = getSymbolName(section, symb, Name);
2935    if (ec != object_error::success)
2936      return ec;
2937    size_t atpos = Name.find('@');
2938    if (atpos == StringRef::npos) {
2939      Version = "";
2940      IsDefault = false;
2941      return object_error::success;
2942    }
2943    ++atpos;
2944    if (atpos < Name.size() && Name[atpos] == '@') {
2945      IsDefault = true;
2946      ++atpos;
2947    } else {
2948      IsDefault = false;
2949    }
2950    Version = Name.substr(atpos);
2951    return object_error::success;
2952  }
2953
2954  // This is a dynamic symbol. Look in the GNU symbol version table.
2955  if (dot_gnu_version_sec == NULL) {
2956    // No version table.
2957    Version = "";
2958    IsDefault = false;
2959    return object_error::success;
2960  }
2961
2962  // Determine the position in the symbol table of this entry.
2963  const char *sec_start = (const char*)base() + section->sh_offset;
2964  size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2965
2966  // Get the corresponding version index entry
2967  const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2968  size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2969
2970  // Special markers for unversioned symbols.
2971  if (version_index == ELF::VER_NDX_LOCAL ||
2972      version_index == ELF::VER_NDX_GLOBAL) {
2973    Version = "";
2974    IsDefault = false;
2975    return object_error::success;
2976  }
2977
2978  // Lookup this symbol in the version table
2979  LoadVersionMap();
2980  if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2981    report_fatal_error("Symbol has version index without corresponding "
2982                       "define or reference entry");
2983  const VersionMapEntry &entry = VersionMap[version_index];
2984
2985  // Get the version name string
2986  size_t name_offset;
2987  if (entry.isVerdef()) {
2988    // The first Verdaux entry holds the name.
2989    name_offset = entry.getVerdef()->getAux()->vda_name;
2990  } else {
2991    name_offset = entry.getVernaux()->vna_name;
2992  }
2993  Version = getString(dot_dynstr_sec, name_offset);
2994
2995  // Set IsDefault
2996  if (entry.isVerdef()) {
2997    IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2998  } else {
2999    IsDefault = false;
3000  }
3001
3002  return object_error::success;
3003}
3004
3005/// FIXME: Maybe we should have a base ElfObjectFile that is not a template
3006/// and make these member functions?
3007static inline error_code getELFRelocationAddend(const RelocationRef R,
3008                                                int64_t &Addend) {
3009  const ObjectFile *Obj = R.getObjectFile();
3010  DataRefImpl DRI = R.getRawDataRefImpl();
3011  // Little-endian 32-bit
3012  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
3013    return ELFObj->getRelocationAddend(DRI, Addend);
3014
3015  // Big-endian 32-bit
3016  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
3017    return ELFObj->getRelocationAddend(DRI, Addend);
3018
3019  // Little-endian 64-bit
3020  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
3021    return ELFObj->getRelocationAddend(DRI, Addend);
3022
3023  // Big-endian 64-bit
3024  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
3025    return ELFObj->getRelocationAddend(DRI, Addend);
3026
3027  llvm_unreachable("Object passed to getELFRelocationAddend() is not ELF");
3028}
3029
3030/// This is a generic interface for retrieving GNU symbol version
3031/// information from an ELFObjectFile.
3032static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
3033                                             const SymbolRef &Sym,
3034                                             StringRef &Version,
3035                                             bool &IsDefault) {
3036  // Little-endian 32-bit
3037  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
3038    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3039
3040  // Big-endian 32-bit
3041  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
3042    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3043
3044  // Little-endian 64-bit
3045  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
3046    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3047
3048  // Big-endian 64-bit
3049  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
3050    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3051
3052  llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
3053}
3054
3055/// This function returns the hash value for a symbol in the .dynsym section
3056/// Name of the API remains consistent as specified in the libelf
3057/// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
3058static inline unsigned elf_hash(StringRef &symbolName) {
3059  unsigned h = 0, g;
3060  for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
3061    h = (h << 4) + symbolName[i];
3062    g = h & 0xf0000000L;
3063    if (g != 0)
3064      h ^= g >> 24;
3065    h &= ~g;
3066  }
3067  return h;
3068}
3069
3070}
3071}
3072
3073#endif
3074