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
33#include <ctype.h>
34
35namespace llvm {
36namespace object {
37
38using support::endianness;
39
40template<endianness target_endianness, std::size_t max_alignment, bool is64Bits>
41struct ELFType {
42  static const endianness TargetEndianness = target_endianness;
43  static const std::size_t MaxAlignment = max_alignment;
44  static const bool Is64Bits = is64Bits;
45};
46
47template<typename T, int max_align>
48struct MaximumAlignment {
49  enum {value = AlignOf<T>::Alignment > max_align ? max_align
50                                                  : AlignOf<T>::Alignment};
51};
52
53// Subclasses of ELFObjectFile may need this for template instantiation
54inline std::pair<unsigned char, unsigned char>
55getElfArchType(MemoryBuffer *Object) {
56  if (Object->getBufferSize() < ELF::EI_NIDENT)
57    return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
58  return std::make_pair((uint8_t) Object->getBufferStart()[ELF::EI_CLASS],
59                        (uint8_t) Object->getBufferStart()[ELF::EI_DATA]);
60}
61
62// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
63template<endianness target_endianness, std::size_t max_alignment>
64struct ELFDataTypeTypedefHelperCommon {
65  typedef support::detail::packed_endian_specific_integral
66    <uint16_t, target_endianness,
67     MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half;
68  typedef support::detail::packed_endian_specific_integral
69    <uint32_t, target_endianness,
70     MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word;
71  typedef support::detail::packed_endian_specific_integral
72    <int32_t, target_endianness,
73     MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword;
74  typedef support::detail::packed_endian_specific_integral
75    <uint64_t, target_endianness,
76     MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword;
77  typedef support::detail::packed_endian_specific_integral
78    <int64_t, target_endianness,
79     MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword;
80};
81
82template<class ELFT>
83struct ELFDataTypeTypedefHelper;
84
85/// ELF 32bit types.
86template<endianness TargetEndianness, std::size_t MaxAlign>
87struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, false> >
88  : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
89  typedef uint32_t value_type;
90  typedef support::detail::packed_endian_specific_integral
91    <value_type, TargetEndianness,
92     MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
93  typedef support::detail::packed_endian_specific_integral
94    <value_type, TargetEndianness,
95     MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
96};
97
98/// ELF 64bit types.
99template<endianness TargetEndianness, std::size_t MaxAlign>
100struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, true> >
101  : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
102  typedef uint64_t value_type;
103  typedef support::detail::packed_endian_specific_integral
104    <value_type, TargetEndianness,
105     MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
106  typedef support::detail::packed_endian_specific_integral
107    <value_type, TargetEndianness,
108     MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
109};
110
111// I really don't like doing this, but the alternative is copypasta.
112#define LLVM_ELF_IMPORT_TYPES(E, M, W)                                         \
113typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Addr Elf_Addr; \
114typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Off Elf_Off;   \
115typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Half Elf_Half; \
116typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Word Elf_Word; \
117typedef typename                                                               \
118  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sword Elf_Sword;              \
119typedef typename                                                               \
120  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Xword Elf_Xword;              \
121typedef typename                                                               \
122  ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sxword Elf_Sxword;
123
124#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)                                       \
125  LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::MaxAlignment,            \
126  ELFT::Is64Bits)
127
128// Section header.
129template<class ELFT>
130struct Elf_Shdr_Base;
131
132template<endianness TargetEndianness, std::size_t MaxAlign>
133struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, false> > {
134  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
135  Elf_Word sh_name;     // Section name (index into string table)
136  Elf_Word sh_type;     // Section type (SHT_*)
137  Elf_Word sh_flags;    // Section flags (SHF_*)
138  Elf_Addr sh_addr;     // Address where section is to be loaded
139  Elf_Off  sh_offset;   // File offset of section data, in bytes
140  Elf_Word sh_size;     // Size of section, in bytes
141  Elf_Word sh_link;     // Section type-specific header table index link
142  Elf_Word sh_info;     // Section type-specific extra information
143  Elf_Word sh_addralign;// Section address alignment
144  Elf_Word sh_entsize;  // Size of records contained within the section
145};
146
147template<endianness TargetEndianness, std::size_t MaxAlign>
148struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, true> > {
149  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
150  Elf_Word  sh_name;     // Section name (index into string table)
151  Elf_Word  sh_type;     // Section type (SHT_*)
152  Elf_Xword sh_flags;    // Section flags (SHF_*)
153  Elf_Addr  sh_addr;     // Address where section is to be loaded
154  Elf_Off   sh_offset;   // File offset of section data, in bytes
155  Elf_Xword sh_size;     // Size of section, in bytes
156  Elf_Word  sh_link;     // Section type-specific header table index link
157  Elf_Word  sh_info;     // Section type-specific extra information
158  Elf_Xword sh_addralign;// Section address alignment
159  Elf_Xword sh_entsize;  // Size of records contained within the section
160};
161
162template<class ELFT>
163struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
164  using Elf_Shdr_Base<ELFT>::sh_entsize;
165  using Elf_Shdr_Base<ELFT>::sh_size;
166
167  /// @brief Get the number of entities this section contains if it has any.
168  unsigned getEntityCount() const {
169    if (sh_entsize == 0)
170      return 0;
171    return sh_size / sh_entsize;
172  }
173};
174
175template<class ELFT>
176struct Elf_Sym_Base;
177
178template<endianness TargetEndianness, std::size_t MaxAlign>
179struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, false> > {
180  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
181  Elf_Word      st_name;  // Symbol name (index into string table)
182  Elf_Addr      st_value; // Value or address associated with the symbol
183  Elf_Word      st_size;  // Size of the symbol
184  unsigned char st_info;  // Symbol's type and binding attributes
185  unsigned char st_other; // Must be zero; reserved
186  Elf_Half      st_shndx; // Which section (header table index) it's defined in
187};
188
189template<endianness TargetEndianness, std::size_t MaxAlign>
190struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, true> > {
191  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
192  Elf_Word      st_name;  // Symbol name (index into string table)
193  unsigned char st_info;  // Symbol's type and binding attributes
194  unsigned char st_other; // Must be zero; reserved
195  Elf_Half      st_shndx; // Which section (header table index) it's defined in
196  Elf_Addr      st_value; // Value or address associated with the symbol
197  Elf_Xword     st_size;  // Size of the symbol
198};
199
200template<class ELFT>
201struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
202  using Elf_Sym_Base<ELFT>::st_info;
203
204  // These accessors and mutators correspond to the ELF32_ST_BIND,
205  // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
206  unsigned char getBinding() const { return st_info >> 4; }
207  unsigned char getType() const { return st_info & 0x0f; }
208  void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
209  void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
210  void setBindingAndType(unsigned char b, unsigned char t) {
211    st_info = (b << 4) + (t & 0x0f);
212  }
213};
214
215/// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
216/// (.gnu.version). This structure is identical for ELF32 and ELF64.
217template<class ELFT>
218struct Elf_Versym_Impl {
219  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
220  Elf_Half vs_index;   // Version index with flags (e.g. VERSYM_HIDDEN)
221};
222
223template<class ELFT>
224struct Elf_Verdaux_Impl;
225
226/// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
227/// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
228template<class ELFT>
229struct Elf_Verdef_Impl {
230  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
231  typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
232  Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
233  Elf_Half vd_flags;   // Bitwise flags (VER_DEF_*)
234  Elf_Half vd_ndx;     // Version index, used in .gnu.version entries
235  Elf_Half vd_cnt;     // Number of Verdaux entries
236  Elf_Word vd_hash;    // Hash of name
237  Elf_Word vd_aux;     // Offset to the first Verdaux entry (in bytes)
238  Elf_Word vd_next;    // Offset to the next Verdef entry (in bytes)
239
240  /// Get the first Verdaux entry for this Verdef.
241  const Elf_Verdaux *getAux() const {
242    return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
243  }
244};
245
246/// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
247/// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
248template<class ELFT>
249struct Elf_Verdaux_Impl {
250  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
251  Elf_Word vda_name; // Version name (offset in string table)
252  Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
253};
254
255/// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
256/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
257template<class ELFT>
258struct Elf_Verneed_Impl {
259  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
260  Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
261  Elf_Half vn_cnt;     // Number of associated Vernaux entries
262  Elf_Word vn_file;    // Library name (string table offset)
263  Elf_Word vn_aux;     // Offset to first Vernaux entry (in bytes)
264  Elf_Word vn_next;    // Offset to next Verneed entry (in bytes)
265};
266
267/// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
268/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
269template<class ELFT>
270struct Elf_Vernaux_Impl {
271  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
272  Elf_Word vna_hash;  // Hash of dependency name
273  Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
274  Elf_Half vna_other; // Version index, used in .gnu.version entries
275  Elf_Word vna_name;  // Dependency name
276  Elf_Word vna_next;  // Offset to next Vernaux entry (in bytes)
277};
278
279/// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
280///               table section (.dynamic) look like.
281template<class ELFT>
282struct Elf_Dyn_Base;
283
284template<endianness TargetEndianness, std::size_t MaxAlign>
285struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, false> > {
286  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
287  Elf_Sword d_tag;
288  union {
289    Elf_Word d_val;
290    Elf_Addr d_ptr;
291  } d_un;
292};
293
294template<endianness TargetEndianness, std::size_t MaxAlign>
295struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, true> > {
296  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
297  Elf_Sxword d_tag;
298  union {
299    Elf_Xword d_val;
300    Elf_Addr d_ptr;
301  } d_un;
302};
303
304/// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
305template<class ELFT>
306struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
307  using Elf_Dyn_Base<ELFT>::d_tag;
308  using Elf_Dyn_Base<ELFT>::d_un;
309  int64_t getTag() const { return d_tag; }
310  uint64_t getVal() const { return d_un.d_val; }
311  uint64_t getPtr() const { return d_un.ptr; }
312};
313
314// Elf_Rel: Elf Relocation
315template<class ELFT, bool isRela>
316struct Elf_Rel_Base;
317
318template<endianness TargetEndianness, std::size_t MaxAlign>
319struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> {
320  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
321  Elf_Addr r_offset;     // Location (file byte offset, or program virtual addr)
322  Elf_Word r_info;       // Symbol table index and type of relocation to apply
323
324  uint32_t getRInfo(bool isMips64EL) const {
325    assert(!isMips64EL);
326    return r_info;
327  }
328  void setRInfo(uint32_t R) {
329    r_info = R;
330  }
331};
332
333template<endianness TargetEndianness, std::size_t MaxAlign>
334struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> {
335  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
336  Elf_Addr  r_offset; // Location (file byte offset, or program virtual addr)
337  Elf_Xword r_info;   // Symbol table index and type of relocation to apply
338
339  uint64_t getRInfo(bool isMips64EL) const {
340    uint64_t t = r_info;
341    if (!isMips64EL)
342      return t;
343    // Mips64 little endian has a "special" encoding of r_info. Instead of one
344    // 64 bit little endian number, it is a little endian 32 bit number followed
345    // by a 32 bit big endian number.
346    return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
347      ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
348  }
349  void setRInfo(uint64_t R) {
350    // FIXME: Add mips64el support.
351    r_info = R;
352  }
353};
354
355template<endianness TargetEndianness, std::size_t MaxAlign>
356struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> {
357  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
358  Elf_Addr  r_offset; // Location (file byte offset, or program virtual addr)
359  Elf_Word  r_info;   // Symbol table index and type of relocation to apply
360  Elf_Sword r_addend; // Compute value for relocatable field by adding this
361
362  uint32_t getRInfo(bool isMips64EL) const {
363    assert(!isMips64EL);
364    return r_info;
365  }
366  void setRInfo(uint32_t R) {
367    r_info = R;
368  }
369};
370
371template<endianness TargetEndianness, std::size_t MaxAlign>
372struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> {
373  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
374  Elf_Addr   r_offset; // Location (file byte offset, or program virtual addr)
375  Elf_Xword  r_info;   // Symbol table index and type of relocation to apply
376  Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
377
378  uint64_t getRInfo(bool isMips64EL) const {
379    // Mips64 little endian has a "special" encoding of r_info. Instead of one
380    // 64 bit little endian number, it is a little endian 32 bit number followed
381    // by a 32 bit big endian number.
382    uint64_t t = r_info;
383    if (!isMips64EL)
384      return t;
385    return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
386      ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
387  }
388  void setRInfo(uint64_t R) {
389    // FIXME: Add mips64el support.
390    r_info = R;
391  }
392};
393
394template<class ELFT, bool isRela>
395struct Elf_Rel_Impl;
396
397template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
398struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>, isRela>
399       : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, isRela> {
400  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
401
402  // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
403  // and ELF64_R_INFO macros defined in the ELF specification:
404  uint32_t getSymbol(bool isMips64EL) const {
405    return (uint32_t) (this->getRInfo(isMips64EL) >> 32);
406  }
407  uint32_t getType(bool isMips64EL) const {
408    return (uint32_t) (this->getRInfo(isMips64EL) & 0xffffffffL);
409  }
410  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
411  void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
412  void setSymbolAndType(uint32_t s, uint32_t t) {
413    this->setRInfo(((uint64_t)s << 32) + (t&0xffffffffL));
414  }
415};
416
417template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
418struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>, isRela>
419       : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, isRela> {
420  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
421
422  // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
423  // and ELF32_R_INFO macros defined in the ELF specification:
424  uint32_t getSymbol(bool isMips64EL) const {
425    return this->getRInfo(isMips64EL) >> 8;
426  }
427  unsigned char getType(bool isMips64EL) const {
428    return (unsigned char) (this->getRInfo(isMips64EL) & 0x0ff);
429  }
430  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
431  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
432  void setSymbolAndType(uint32_t s, unsigned char t) {
433    this->setRInfo((s << 8) + t);
434  }
435};
436
437template<class ELFT>
438struct Elf_Ehdr_Impl {
439  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
440  unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
441  Elf_Half e_type;     // Type of file (see ET_*)
442  Elf_Half e_machine;  // Required architecture for this file (see EM_*)
443  Elf_Word e_version;  // Must be equal to 1
444  Elf_Addr e_entry;    // Address to jump to in order to start program
445  Elf_Off  e_phoff;    // Program header table's file offset, in bytes
446  Elf_Off  e_shoff;    // Section header table's file offset, in bytes
447  Elf_Word e_flags;    // Processor-specific flags
448  Elf_Half e_ehsize;   // Size of ELF header, in bytes
449  Elf_Half e_phentsize;// Size of an entry in the program header table
450  Elf_Half e_phnum;    // Number of entries in the program header table
451  Elf_Half e_shentsize;// Size of an entry in the section header table
452  Elf_Half e_shnum;    // Number of entries in the section header table
453  Elf_Half e_shstrndx; // Section header table index of section name
454                                 // string table
455  bool checkMagic() const {
456    return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
457  }
458   unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
459   unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
460};
461
462template<class ELFT>
463struct Elf_Phdr_Impl;
464
465template<endianness TargetEndianness, std::size_t MaxAlign>
466struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, false> > {
467  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
468  Elf_Word p_type;   // Type of segment
469  Elf_Off  p_offset; // FileOffset where segment is located, in bytes
470  Elf_Addr p_vaddr;  // Virtual Address of beginning of segment
471  Elf_Addr p_paddr;  // Physical address of beginning of segment (OS-specific)
472  Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
473  Elf_Word p_memsz;  // Num. of bytes in mem image of segment (may be zero)
474  Elf_Word p_flags;  // Segment flags
475  Elf_Word p_align;  // Segment alignment constraint
476};
477
478template<endianness TargetEndianness, std::size_t MaxAlign>
479struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, true> > {
480  LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
481  Elf_Word p_type;   // Type of segment
482  Elf_Word p_flags;  // Segment flags
483  Elf_Off  p_offset; // FileOffset where segment is located, in bytes
484  Elf_Addr p_vaddr;  // Virtual Address of beginning of segment
485  Elf_Addr p_paddr;  // Physical address of beginning of segment (OS-specific)
486  Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
487  Elf_Xword p_memsz;  // Num. of bytes in mem image of segment (may be zero)
488  Elf_Xword p_align;  // Segment alignment constraint
489};
490
491template<class ELFT>
492class ELFObjectFile : public ObjectFile {
493  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
494
495public:
496  /// \brief Iterate over constant sized entities.
497  template<class EntT>
498  class ELFEntityIterator {
499  public:
500    typedef ptrdiff_t difference_type;
501    typedef EntT value_type;
502    typedef std::random_access_iterator_tag iterator_category;
503    typedef value_type &reference;
504    typedef value_type *pointer;
505
506    /// \brief Default construct iterator.
507    ELFEntityIterator() : EntitySize(0), Current(0) {}
508    ELFEntityIterator(uint64_t EntSize, const char *Start)
509      : EntitySize(EntSize)
510      , Current(Start) {}
511
512    reference operator *() {
513      assert(Current && "Attempted to dereference an invalid iterator!");
514      return *reinterpret_cast<pointer>(Current);
515    }
516
517    pointer operator ->() {
518      assert(Current && "Attempted to dereference an invalid iterator!");
519      return reinterpret_cast<pointer>(Current);
520    }
521
522    bool operator ==(const ELFEntityIterator &Other) {
523      return Current == Other.Current;
524    }
525
526    bool operator !=(const ELFEntityIterator &Other) {
527      return !(*this == Other);
528    }
529
530    ELFEntityIterator &operator ++() {
531      assert(Current && "Attempted to increment an invalid iterator!");
532      Current += EntitySize;
533      return *this;
534    }
535
536    ELFEntityIterator operator ++(int) {
537      ELFEntityIterator Tmp = *this;
538      ++*this;
539      return Tmp;
540    }
541
542    ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
543      EntitySize = Other.EntitySize;
544      Current = Other.Current;
545      return *this;
546    }
547
548    difference_type operator -(const ELFEntityIterator &Other) const {
549      assert(EntitySize == Other.EntitySize &&
550             "Subtracting iterators of different EntitiySize!");
551      return (Current - Other.Current) / EntitySize;
552    }
553
554    const char *get() const { return Current; }
555
556  private:
557    uint64_t EntitySize;
558    const char *Current;
559  };
560
561  typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
562  typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
563  typedef Elf_Sym_Impl<ELFT> Elf_Sym;
564  typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
565  typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
566  typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
567  typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
568  typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
569  typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
570  typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
571  typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
572  typedef Elf_Versym_Impl<ELFT> Elf_Versym;
573  typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
574  typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
575  typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
576  typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
577
578protected:
579  // This flag is used for classof, to distinguish ELFObjectFile from
580  // its subclass. If more subclasses will be created, this flag will
581  // have to become an enum.
582  bool isDyldELFObject;
583
584private:
585  const Elf_Ehdr *Header;
586  const Elf_Shdr *SectionHeaderTable;
587  const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
588  const Elf_Shdr *dot_strtab_sec;   // Symbol header string table.
589  const Elf_Shdr *dot_dynstr_sec;   // Dynamic symbol string table.
590
591  int SymbolTableIndex;
592  int DynamicSymbolTableIndex;
593  DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
594
595  const Elf_Shdr *dot_dynamic_sec;       // .dynamic
596  const Elf_Shdr *dot_gnu_version_sec;   // .gnu.version
597  const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
598  const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
599
600  // Pointer to SONAME entry in dynamic string table
601  // This is set the first time getLoadName is called.
602  mutable const char *dt_soname;
603
604private:
605  uint64_t getROffset(DataRefImpl Rel) const;
606
607  // Records for each version index the corresponding Verdef or Vernaux entry.
608  // This is filled the first time LoadVersionMap() is called.
609  class VersionMapEntry : public PointerIntPair<const void*, 1> {
610    public:
611    // If the integer is 0, this is an Elf_Verdef*.
612    // If the integer is 1, this is an Elf_Vernaux*.
613    VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
614    VersionMapEntry(const Elf_Verdef *verdef)
615        : PointerIntPair<const void*, 1>(verdef, 0) { }
616    VersionMapEntry(const Elf_Vernaux *vernaux)
617        : PointerIntPair<const void*, 1>(vernaux, 1) { }
618    bool isNull() const { return getPointer() == NULL; }
619    bool isVerdef() const { return !isNull() && getInt() == 0; }
620    bool isVernaux() const { return !isNull() && getInt() == 1; }
621    const Elf_Verdef *getVerdef() const {
622      return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
623    }
624    const Elf_Vernaux *getVernaux() const {
625      return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
626    }
627  };
628  mutable SmallVector<VersionMapEntry, 16> VersionMap;
629  void LoadVersionDefs(const Elf_Shdr *sec) const;
630  void LoadVersionNeeds(const Elf_Shdr *ec) const;
631  void LoadVersionMap() const;
632
633  /// @brief Get the relocation section that contains \a Rel.
634  const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
635    return getSection(Rel.d.a);
636  }
637
638public:
639  bool            isRelocationHasAddend(DataRefImpl Rel) const;
640  template<typename T>
641  const T        *getEntry(uint32_t Section, uint32_t Entry) const;
642  template<typename T>
643  const T        *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
644  const Elf_Shdr *getSection(DataRefImpl index) const;
645  const Elf_Shdr *getSection(uint32_t index) const;
646  const Elf_Rel  *getRel(DataRefImpl Rel) const;
647  const Elf_Rela *getRela(DataRefImpl Rela) const;
648  const char     *getString(uint32_t section, uint32_t offset) const;
649  const char     *getString(const Elf_Shdr *section, uint32_t offset) const;
650  error_code      getSymbolVersion(const Elf_Shdr *section,
651                                   const Elf_Sym *Symb,
652                                   StringRef &Version,
653                                   bool &IsDefault) const;
654  void VerifyStrTab(const Elf_Shdr *sh) const;
655
656protected:
657  const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
658  void            validateSymbol(DataRefImpl Symb) const;
659  StringRef       getRelocationTypeName(uint32_t Type) const;
660
661public:
662  error_code      getSymbolName(const Elf_Shdr *section,
663                                const Elf_Sym *Symb,
664                                StringRef &Res) const;
665  error_code      getSectionName(const Elf_Shdr *section,
666                                 StringRef &Res) const;
667  const Elf_Dyn  *getDyn(DataRefImpl DynData) const;
668  error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
669                              bool &IsDefault) const;
670  uint64_t getSymbolIndex(const Elf_Sym *sym) const;
671  error_code getRelocationAddend(DataRefImpl Rel, int64_t &Res) const;
672protected:
673  virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
674  virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
675  virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
676  virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
677  virtual error_code getSymbolAlignment(DataRefImpl Symb, uint32_t &Res) const;
678  virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
679  virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
680  virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
681  virtual error_code getSymbolType(DataRefImpl Symb,
682                                   SymbolRef::Type &Res) const;
683  virtual error_code getSymbolSection(DataRefImpl Symb,
684                                      section_iterator &Res) const;
685  virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
686
687  virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
688  virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
689
690  virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
691  virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
692  virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
693  virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
694  virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
695  virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
696  virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
697  virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
698  virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
699  virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
700                                                   bool &Res) const;
701  virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
702  virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
703  virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
704  virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
705                                           bool &Result) const;
706  virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
707  virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
708  virtual section_iterator getRelocatedSection(DataRefImpl Sec) const;
709
710  virtual error_code getRelocationNext(DataRefImpl Rel,
711                                       RelocationRef &Res) const;
712  virtual error_code getRelocationAddress(DataRefImpl Rel,
713                                          uint64_t &Res) const;
714  virtual error_code getRelocationOffset(DataRefImpl Rel,
715                                         uint64_t &Res) const;
716  virtual symbol_iterator getRelocationSymbol(DataRefImpl Rel) const;
717  virtual error_code getRelocationType(DataRefImpl Rel,
718                                       uint64_t &Res) const;
719  virtual error_code getRelocationTypeName(DataRefImpl Rel,
720                                           SmallVectorImpl<char> &Result) const;
721  virtual error_code getRelocationValueString(DataRefImpl Rel,
722                                           SmallVectorImpl<char> &Result) const;
723
724public:
725  ELFObjectFile(MemoryBuffer *Object, error_code &ec);
726
727  bool isMips64EL() const {
728    return Header->e_machine == ELF::EM_MIPS &&
729      Header->getFileClass() == ELF::ELFCLASS64 &&
730      Header->getDataEncoding() == ELF::ELFDATA2LSB;
731  }
732
733  virtual symbol_iterator begin_symbols() const;
734  virtual symbol_iterator end_symbols() const;
735
736  virtual symbol_iterator begin_dynamic_symbols() const;
737  virtual symbol_iterator end_dynamic_symbols() const;
738
739  virtual section_iterator begin_sections() const;
740  virtual section_iterator end_sections() const;
741
742  virtual library_iterator begin_libraries_needed() const;
743  virtual library_iterator end_libraries_needed() const;
744
745  const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
746    return getSection(DynamicSymbolTableIndex);
747  }
748
749  const Elf_Shdr *getDynamicStringTableSectionHeader() const {
750    return dot_dynstr_sec;
751  }
752
753  Elf_Dyn_iterator begin_dynamic_table() const;
754  /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
755  /// the section size.
756  Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
757
758  Elf_Sym_iterator begin_elf_dynamic_symbols() const {
759    const Elf_Shdr *DynSymtab = getDynamicSymbolTableSectionHeader();
760    if (DynSymtab)
761      return Elf_Sym_iterator(DynSymtab->sh_entsize,
762                              (const char *)base() + DynSymtab->sh_offset);
763    return Elf_Sym_iterator(0, 0);
764  }
765
766  Elf_Sym_iterator end_elf_dynamic_symbols() const {
767    const Elf_Shdr *DynSymtab = getDynamicSymbolTableSectionHeader();
768    if (DynSymtab)
769      return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
770                              DynSymtab->sh_offset + DynSymtab->sh_size);
771    return Elf_Sym_iterator(0, 0);
772  }
773
774  Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
775    return Elf_Rela_Iter(sec->sh_entsize,
776                         (const char *)(base() + sec->sh_offset));
777  }
778
779  Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
780    return Elf_Rela_Iter(sec->sh_entsize, (const char *)
781                         (base() + sec->sh_offset + sec->sh_size));
782  }
783
784  Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
785    return Elf_Rel_Iter(sec->sh_entsize,
786                        (const char *)(base() + sec->sh_offset));
787  }
788
789  Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
790    return Elf_Rel_Iter(sec->sh_entsize, (const char *)
791                        (base() + sec->sh_offset + sec->sh_size));
792  }
793
794  /// \brief Iterate over program header table.
795  typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
796
797  Elf_Phdr_Iter begin_program_headers() const {
798    return Elf_Phdr_Iter(Header->e_phentsize,
799                         (const char*)base() + Header->e_phoff);
800  }
801
802  Elf_Phdr_Iter end_program_headers() const {
803    return Elf_Phdr_Iter(Header->e_phentsize,
804                         (const char*)base() +
805                           Header->e_phoff +
806                           (Header->e_phnum * Header->e_phentsize));
807  }
808
809  virtual uint8_t getBytesInAddress() const;
810  virtual StringRef getFileFormatName() const;
811  virtual StringRef getObjectType() const { return "ELF"; }
812  virtual unsigned getArch() const;
813  virtual StringRef getLoadName() const;
814  virtual error_code getSectionContents(const Elf_Shdr *sec,
815                                        StringRef &Res) const;
816
817  uint64_t getNumSections() const;
818  uint64_t getStringTableIndex() const;
819  ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
820  const Elf_Ehdr *getElfHeader() const;
821  const Elf_Shdr *getSection(const Elf_Sym *symb) const;
822  const Elf_Shdr *getElfSection(section_iterator &It) const;
823  const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
824  const Elf_Sym *getElfSymbol(uint32_t index) const;
825
826  // Methods for type inquiry through isa, cast, and dyn_cast
827  bool isDyldType() const { return isDyldELFObject; }
828  static inline bool classof(const Binary *v) {
829    return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
830                                      ELFT::Is64Bits);
831  }
832};
833
834// Use an alignment of 2 for the typedefs since that is the worst case for
835// ELF files in archives.
836typedef ELFObjectFile<ELFType<support::little, 2, false> > ELF32LEObjectFile;
837typedef ELFObjectFile<ELFType<support::little, 2, true> > ELF64LEObjectFile;
838typedef ELFObjectFile<ELFType<support::big, 2, false> > ELF32BEObjectFile;
839typedef ELFObjectFile<ELFType<support::big, 2, true> > ELF64BEObjectFile;
840
841// Iterate through the version definitions, and place each Elf_Verdef
842// in the VersionMap according to its index.
843template<class ELFT>
844void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
845  unsigned vd_size = sec->sh_size; // Size of section in bytes
846  unsigned vd_count = sec->sh_info; // Number of Verdef entries
847  const char *sec_start = (const char*)base() + sec->sh_offset;
848  const char *sec_end = sec_start + vd_size;
849  // The first Verdef entry is at the start of the section.
850  const char *p = sec_start;
851  for (unsigned i = 0; i < vd_count; i++) {
852    if (p + sizeof(Elf_Verdef) > sec_end)
853      report_fatal_error("Section ended unexpectedly while scanning "
854                         "version definitions.");
855    const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
856    if (vd->vd_version != ELF::VER_DEF_CURRENT)
857      report_fatal_error("Unexpected verdef version");
858    size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
859    if (index >= VersionMap.size())
860      VersionMap.resize(index+1);
861    VersionMap[index] = VersionMapEntry(vd);
862    p += vd->vd_next;
863  }
864}
865
866// Iterate through the versions needed section, and place each Elf_Vernaux
867// in the VersionMap according to its index.
868template<class ELFT>
869void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
870  unsigned vn_size = sec->sh_size; // Size of section in bytes
871  unsigned vn_count = sec->sh_info; // Number of Verneed entries
872  const char *sec_start = (const char*)base() + sec->sh_offset;
873  const char *sec_end = sec_start + vn_size;
874  // The first Verneed entry is at the start of the section.
875  const char *p = sec_start;
876  for (unsigned i = 0; i < vn_count; i++) {
877    if (p + sizeof(Elf_Verneed) > sec_end)
878      report_fatal_error("Section ended unexpectedly while scanning "
879                         "version needed records.");
880    const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
881    if (vn->vn_version != ELF::VER_NEED_CURRENT)
882      report_fatal_error("Unexpected verneed version");
883    // Iterate through the Vernaux entries
884    const char *paux = p + vn->vn_aux;
885    for (unsigned j = 0; j < vn->vn_cnt; j++) {
886      if (paux + sizeof(Elf_Vernaux) > sec_end)
887        report_fatal_error("Section ended unexpected while scanning auxiliary "
888                           "version needed records.");
889      const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
890      size_t index = vna->vna_other & ELF::VERSYM_VERSION;
891      if (index >= VersionMap.size())
892        VersionMap.resize(index+1);
893      VersionMap[index] = VersionMapEntry(vna);
894      paux += vna->vna_next;
895    }
896    p += vn->vn_next;
897  }
898}
899
900template<class ELFT>
901void ELFObjectFile<ELFT>::LoadVersionMap() const {
902  // If there is no dynamic symtab or version table, there is nothing to do.
903  if (getDynamicStringTableSectionHeader() == NULL ||
904      dot_gnu_version_sec == NULL)
905    return;
906
907  // Has the VersionMap already been loaded?
908  if (VersionMap.size() > 0)
909    return;
910
911  // The first two version indexes are reserved.
912  // Index 0 is LOCAL, index 1 is GLOBAL.
913  VersionMap.push_back(VersionMapEntry());
914  VersionMap.push_back(VersionMapEntry());
915
916  if (dot_gnu_version_d_sec)
917    LoadVersionDefs(dot_gnu_version_d_sec);
918
919  if (dot_gnu_version_r_sec)
920    LoadVersionNeeds(dot_gnu_version_r_sec);
921}
922
923template<class ELFT>
924void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
925#ifndef NDEBUG
926  const Elf_Sym  *symb = getSymbol(Symb);
927  const Elf_Shdr *SymbolTableSection = getSection(Symb.d.b);
928  // FIXME: We really need to do proper error handling in the case of an invalid
929  //        input file. Because we don't use exceptions, I think we'll just pass
930  //        an error object around.
931  if (!(  symb
932        && SymbolTableSection
933        && symb >= (const Elf_Sym*)(base()
934                   + SymbolTableSection->sh_offset)
935        && symb <  (const Elf_Sym*)(base()
936                   + SymbolTableSection->sh_offset
937                   + SymbolTableSection->sh_size)))
938    // FIXME: Proper error handling.
939    report_fatal_error("Symb must point to a valid symbol!");
940#endif
941}
942
943template<class ELFT>
944error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
945                                              SymbolRef &Result) const {
946  validateSymbol(Symb);
947  ++Symb.d.a;
948  Result = SymbolRef(Symb, this);
949  return object_error::success;
950}
951
952template<class ELFT>
953error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
954                                              StringRef &Result) const {
955  validateSymbol(Symb);
956  const Elf_Sym *symb = getSymbol(Symb);
957  return getSymbolName(getSection(Symb.d.b), symb, Result);
958}
959
960template<class ELFT>
961error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
962                                                 StringRef &Version,
963                                                 bool &IsDefault) const {
964  DataRefImpl Symb = SymRef.getRawDataRefImpl();
965  validateSymbol(Symb);
966  const Elf_Sym *symb = getSymbol(Symb);
967  return getSymbolVersion(getSection(Symb.d.b), symb, Version, IsDefault);
968}
969
970template<class ELFT>
971ELF::Elf64_Word ELFObjectFile<ELFT>
972                             ::getSymbolTableIndex(const Elf_Sym *symb) const {
973  if (symb->st_shndx == ELF::SHN_XINDEX)
974    return ExtendedSymbolTable.lookup(symb);
975  return symb->st_shndx;
976}
977
978template<class ELFT>
979const typename ELFObjectFile<ELFT>::Elf_Shdr *
980ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
981  if (symb->st_shndx == ELF::SHN_XINDEX)
982    return getSection(ExtendedSymbolTable.lookup(symb));
983  if (symb->st_shndx >= ELF::SHN_LORESERVE)
984    return 0;
985  return getSection(symb->st_shndx);
986}
987
988template<class ELFT>
989const typename ELFObjectFile<ELFT>::Elf_Ehdr *
990ELFObjectFile<ELFT>::getElfHeader() const {
991  return Header;
992}
993
994template<class ELFT>
995const typename ELFObjectFile<ELFT>::Elf_Shdr *
996ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
997  llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
998  return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
999}
1000
1001template<class ELFT>
1002const typename ELFObjectFile<ELFT>::Elf_Sym *
1003ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
1004  return getSymbol(It->getRawDataRefImpl());
1005}
1006
1007template<class ELFT>
1008const typename ELFObjectFile<ELFT>::Elf_Sym *
1009ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
1010  DataRefImpl SymbolData;
1011  SymbolData.d.a = index;
1012  SymbolData.d.b = SymbolTableIndex;
1013  return getSymbol(SymbolData);
1014}
1015
1016template<class ELFT>
1017error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
1018                                                    uint64_t &Result) const {
1019  validateSymbol(Symb);
1020  const Elf_Sym  *symb = getSymbol(Symb);
1021  const Elf_Shdr *Section;
1022  switch (getSymbolTableIndex(symb)) {
1023  case ELF::SHN_COMMON:
1024   // Unintialized symbols have no offset in the object file
1025  case ELF::SHN_UNDEF:
1026    Result = UnknownAddressOrSize;
1027    return object_error::success;
1028  case ELF::SHN_ABS:
1029    Result = symb->st_value;
1030    return object_error::success;
1031  default: Section = getSection(symb);
1032  }
1033
1034  switch (symb->getType()) {
1035  case ELF::STT_SECTION:
1036    Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1037    return object_error::success;
1038  case ELF::STT_FUNC:
1039  case ELF::STT_OBJECT:
1040  case ELF::STT_NOTYPE:
1041    Result = symb->st_value +
1042             (Section ? Section->sh_offset : 0);
1043    return object_error::success;
1044  default:
1045    Result = UnknownAddressOrSize;
1046    return object_error::success;
1047  }
1048}
1049
1050template<class ELFT>
1051error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1052                                                 uint64_t &Result) const {
1053  validateSymbol(Symb);
1054  const Elf_Sym  *symb = getSymbol(Symb);
1055  const Elf_Shdr *Section;
1056  switch (getSymbolTableIndex(symb)) {
1057  case ELF::SHN_COMMON:
1058  case ELF::SHN_UNDEF:
1059    Result = UnknownAddressOrSize;
1060    return object_error::success;
1061  case ELF::SHN_ABS:
1062    Result = symb->st_value;
1063    return object_error::success;
1064  default: Section = getSection(symb);
1065  }
1066
1067  switch (symb->getType()) {
1068  case ELF::STT_SECTION:
1069    Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1070    return object_error::success;
1071  case ELF::STT_FUNC:
1072  case ELF::STT_OBJECT:
1073  case ELF::STT_NOTYPE:
1074    bool IsRelocatable;
1075    switch(Header->e_type) {
1076    case ELF::ET_EXEC:
1077    case ELF::ET_DYN:
1078      IsRelocatable = false;
1079      break;
1080    default:
1081      IsRelocatable = true;
1082    }
1083    Result = symb->st_value;
1084
1085    // Clear the ARM/Thumb indicator flag.
1086    if (Header->e_machine == ELF::EM_ARM)
1087      Result &= ~1;
1088
1089    if (IsRelocatable && Section != 0)
1090      Result += Section->sh_addr;
1091    return object_error::success;
1092  default:
1093    Result = UnknownAddressOrSize;
1094    return object_error::success;
1095  }
1096}
1097
1098template<class ELFT>
1099error_code ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb,
1100                                                   uint32_t &Res) const {
1101  uint32_t flags;
1102  getSymbolFlags(Symb, flags);
1103  if (flags & SymbolRef::SF_Common) {
1104    uint64_t Value;
1105    getSymbolValue(Symb, Value);
1106    Res = Value;
1107  } else {
1108    Res = 0;
1109  }
1110  return object_error::success;
1111}
1112
1113template<class ELFT>
1114error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1115                                              uint64_t &Result) const {
1116  validateSymbol(Symb);
1117  const Elf_Sym  *symb = getSymbol(Symb);
1118  if (symb->st_size == 0)
1119    Result = UnknownAddressOrSize;
1120  Result = symb->st_size;
1121  return object_error::success;
1122}
1123
1124template<class ELFT>
1125error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1126                                                    char &Result) const {
1127  validateSymbol(Symb);
1128  const Elf_Sym  *symb = getSymbol(Symb);
1129  const Elf_Shdr *Section = getSection(symb);
1130
1131  char ret = '?';
1132
1133  if (Section) {
1134    switch (Section->sh_type) {
1135    case ELF::SHT_PROGBITS:
1136    case ELF::SHT_DYNAMIC:
1137      switch (Section->sh_flags) {
1138      case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1139        ret = 't'; break;
1140      case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1141        ret = 'd'; break;
1142      case ELF::SHF_ALLOC:
1143      case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1144      case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1145        ret = 'r'; break;
1146      }
1147      break;
1148    case ELF::SHT_NOBITS: ret = 'b';
1149    }
1150  }
1151
1152  switch (getSymbolTableIndex(symb)) {
1153  case ELF::SHN_UNDEF:
1154    if (ret == '?')
1155      ret = 'U';
1156    break;
1157  case ELF::SHN_ABS: ret = 'a'; break;
1158  case ELF::SHN_COMMON: ret = 'c'; break;
1159  }
1160
1161  switch (symb->getBinding()) {
1162  case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1163  case ELF::STB_WEAK:
1164    if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1165      ret = 'w';
1166    else
1167      if (symb->getType() == ELF::STT_OBJECT)
1168        ret = 'V';
1169      else
1170        ret = 'W';
1171  }
1172
1173  if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1174    StringRef name;
1175    if (error_code ec = getSymbolName(Symb, name))
1176      return ec;
1177    Result = StringSwitch<char>(name)
1178      .StartsWith(".debug", 'N')
1179      .StartsWith(".note", 'n')
1180      .Default('?');
1181    return object_error::success;
1182  }
1183
1184  Result = ret;
1185  return object_error::success;
1186}
1187
1188template<class ELFT>
1189error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1190                                              SymbolRef::Type &Result) const {
1191  validateSymbol(Symb);
1192  const Elf_Sym  *symb = getSymbol(Symb);
1193
1194  switch (symb->getType()) {
1195  case ELF::STT_NOTYPE:
1196    Result = SymbolRef::ST_Unknown;
1197    break;
1198  case ELF::STT_SECTION:
1199    Result = SymbolRef::ST_Debug;
1200    break;
1201  case ELF::STT_FILE:
1202    Result = SymbolRef::ST_File;
1203    break;
1204  case ELF::STT_FUNC:
1205    Result = SymbolRef::ST_Function;
1206    break;
1207  case ELF::STT_OBJECT:
1208  case ELF::STT_COMMON:
1209  case ELF::STT_TLS:
1210    Result = SymbolRef::ST_Data;
1211    break;
1212  default:
1213    Result = SymbolRef::ST_Other;
1214    break;
1215  }
1216  return object_error::success;
1217}
1218
1219template<class ELFT>
1220error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1221                                               uint32_t &Result) const {
1222  validateSymbol(Symb);
1223  const Elf_Sym  *symb = getSymbol(Symb);
1224
1225  Result = SymbolRef::SF_None;
1226
1227  if (symb->getBinding() != ELF::STB_LOCAL)
1228    Result |= SymbolRef::SF_Global;
1229
1230  if (symb->getBinding() == ELF::STB_WEAK)
1231    Result |= SymbolRef::SF_Weak;
1232
1233  if (symb->st_shndx == ELF::SHN_ABS)
1234    Result |= SymbolRef::SF_Absolute;
1235
1236  if (symb->getType() == ELF::STT_FILE ||
1237      symb->getType() == ELF::STT_SECTION ||
1238      Symb == begin_symbols()->getRawDataRefImpl())
1239    Result |= SymbolRef::SF_FormatSpecific;
1240
1241  if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1242    Result |= SymbolRef::SF_Undefined;
1243
1244  if (symb->getType() == ELF::STT_COMMON ||
1245      getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1246    Result |= SymbolRef::SF_Common;
1247
1248  if (symb->getType() == ELF::STT_TLS)
1249    Result |= SymbolRef::SF_ThreadLocal;
1250
1251  return object_error::success;
1252}
1253
1254template<class ELFT>
1255error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1256                                                 section_iterator &Res) const {
1257  validateSymbol(Symb);
1258  const Elf_Sym  *symb = getSymbol(Symb);
1259  const Elf_Shdr *sec = getSection(symb);
1260  if (!sec)
1261    Res = end_sections();
1262  else {
1263    DataRefImpl Sec;
1264    Sec.p = reinterpret_cast<intptr_t>(sec);
1265    Res = section_iterator(SectionRef(Sec, this));
1266  }
1267  return object_error::success;
1268}
1269
1270template<class ELFT>
1271error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1272                                               uint64_t &Val) const {
1273  validateSymbol(Symb);
1274  const Elf_Sym *symb = getSymbol(Symb);
1275  Val = symb->st_value;
1276  return object_error::success;
1277}
1278
1279template<class ELFT>
1280error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1281                                               SectionRef &Result) const {
1282  const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1283  sec += Header->e_shentsize;
1284  Sec.p = reinterpret_cast<intptr_t>(sec);
1285  Result = SectionRef(Sec, this);
1286  return object_error::success;
1287}
1288
1289template<class ELFT>
1290error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1291                                               StringRef &Result) const {
1292  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1293  Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1294  return object_error::success;
1295}
1296
1297template<class ELFT>
1298error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1299                                                  uint64_t &Result) const {
1300  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1301  Result = sec->sh_addr;
1302  return object_error::success;
1303}
1304
1305template<class ELFT>
1306error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1307                                               uint64_t &Result) const {
1308  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1309  Result = sec->sh_size;
1310  return object_error::success;
1311}
1312
1313template<class ELFT>
1314error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1315                                                   StringRef &Result) const {
1316  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1317  const char *start = (const char*)base() + sec->sh_offset;
1318  Result = StringRef(start, sec->sh_size);
1319  return object_error::success;
1320}
1321
1322template<class ELFT>
1323error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1324                                                   StringRef &Result) const {
1325  const char *start = (const char*)base() + Sec->sh_offset;
1326  Result = StringRef(start, Sec->sh_size);
1327  return object_error::success;
1328}
1329
1330template<class ELFT>
1331error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1332                                                    uint64_t &Result) const {
1333  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1334  Result = sec->sh_addralign;
1335  return object_error::success;
1336}
1337
1338template<class ELFT>
1339error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1340                                              bool &Result) const {
1341  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1342  if (sec->sh_flags & ELF::SHF_EXECINSTR)
1343    Result = true;
1344  else
1345    Result = false;
1346  return object_error::success;
1347}
1348
1349template<class ELFT>
1350error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1351                                              bool &Result) const {
1352  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1353  if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1354      && sec->sh_type == ELF::SHT_PROGBITS)
1355    Result = true;
1356  else
1357    Result = false;
1358  return object_error::success;
1359}
1360
1361template<class ELFT>
1362error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1363                                             bool &Result) const {
1364  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1365  if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1366      && sec->sh_type == ELF::SHT_NOBITS)
1367    Result = true;
1368  else
1369    Result = false;
1370  return object_error::success;
1371}
1372
1373template<class ELFT>
1374error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1375    DataRefImpl Sec, bool &Result) const {
1376  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1377  if (sec->sh_flags & ELF::SHF_ALLOC)
1378    Result = true;
1379  else
1380    Result = false;
1381  return object_error::success;
1382}
1383
1384template<class ELFT>
1385error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1386                                                 bool &Result) const {
1387  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1388  if (sec->sh_type == ELF::SHT_NOBITS)
1389    Result = true;
1390  else
1391    Result = false;
1392  return object_error::success;
1393}
1394
1395template<class ELFT>
1396error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1397                                                  bool &Result) const {
1398  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1399  // For ELF, all zero-init sections are virtual (that is, they occupy no space
1400  //   in the object image) and vice versa.
1401  Result = sec->sh_type == ELF::SHT_NOBITS;
1402  return object_error::success;
1403}
1404
1405template<class ELFT>
1406error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1407                                                      bool &Result) const {
1408  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1409  if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1410    Result = false;
1411  else
1412    Result = true;
1413  return object_error::success;
1414}
1415
1416template<class ELFT>
1417error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1418                                                      DataRefImpl Symb,
1419                                                      bool &Result) const {
1420  validateSymbol(Symb);
1421
1422  const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1423  const Elf_Sym  *symb = getSymbol(Symb);
1424
1425  unsigned shndx = symb->st_shndx;
1426  bool Reserved = shndx >= ELF::SHN_LORESERVE
1427               && shndx <= ELF::SHN_HIRESERVE;
1428
1429  Result = !Reserved && (sec == getSection(symb->st_shndx));
1430  return object_error::success;
1431}
1432
1433template<class ELFT>
1434relocation_iterator
1435ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1436  DataRefImpl RelData;
1437  uintptr_t SHT = reinterpret_cast<uintptr_t>(SectionHeaderTable);
1438  RelData.d.a = (Sec.p - SHT) / Header->e_shentsize;
1439  RelData.d.b = 0;
1440  return relocation_iterator(RelocationRef(RelData, this));
1441}
1442
1443template<class ELFT>
1444relocation_iterator
1445ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1446  DataRefImpl RelData;
1447  uintptr_t SHT = reinterpret_cast<uintptr_t>(SectionHeaderTable);
1448  const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1449  RelData.d.a = (Sec.p - SHT) / Header->e_shentsize;
1450  if (S->sh_type != ELF::SHT_RELA && S->sh_type != ELF::SHT_REL)
1451    RelData.d.b = 0;
1452  else
1453    RelData.d.b = S->sh_size / S->sh_entsize;
1454
1455  return relocation_iterator(RelocationRef(RelData, this));
1456}
1457
1458template <class ELFT>
1459section_iterator
1460ELFObjectFile<ELFT>::getRelocatedSection(DataRefImpl Sec) const {
1461  if (Header->e_type != ELF::ET_REL)
1462    return end_sections();
1463
1464  const Elf_Shdr *S = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1465  unsigned sh_type = S->sh_type;
1466  if (sh_type != ELF::SHT_RELA && sh_type != ELF::SHT_REL)
1467    return end_sections();
1468
1469  assert(S->sh_info != 0);
1470  const Elf_Shdr *R = getSection(S->sh_info);
1471  DataRefImpl D;
1472  D.p = reinterpret_cast<uintptr_t>(R);
1473  return section_iterator(SectionRef(D, this));
1474}
1475
1476// Relocations
1477template<class ELFT>
1478error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1479                                                  RelocationRef &Result) const {
1480  ++Rel.d.b;
1481  Result = RelocationRef(Rel, this);
1482  return object_error::success;
1483}
1484
1485template <class ELFT>
1486symbol_iterator
1487ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel) const {
1488  uint32_t symbolIdx;
1489  const Elf_Shdr *sec = getRelSection(Rel);
1490  switch (sec->sh_type) {
1491    default :
1492      report_fatal_error("Invalid section type in Rel!");
1493    case ELF::SHT_REL : {
1494      symbolIdx = getRel(Rel)->getSymbol(isMips64EL());
1495      break;
1496    }
1497    case ELF::SHT_RELA : {
1498      symbolIdx = getRela(Rel)->getSymbol(isMips64EL());
1499      break;
1500    }
1501  }
1502  if (!symbolIdx)
1503    return end_symbols();
1504
1505  DataRefImpl SymbolData;
1506  SymbolData.d.a = symbolIdx;
1507  SymbolData.d.b = sec->sh_link;
1508  return symbol_iterator(SymbolRef(SymbolData, this));
1509}
1510
1511template<class ELFT>
1512error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1513                                                     uint64_t &Result) const {
1514  assert((Header->e_type == ELF::ET_EXEC || Header->e_type == ELF::ET_DYN) &&
1515         "Only executable and shared objects files have addresses");
1516  Result = getROffset(Rel);
1517  return object_error::success;
1518}
1519
1520template<class ELFT>
1521error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1522                                                    uint64_t &Result) const {
1523  assert(Header->e_type == ELF::ET_REL &&
1524         "Only relocatable object files have relocation offsets");
1525  Result = getROffset(Rel);
1526  return object_error::success;
1527}
1528
1529template<class ELFT>
1530uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const {
1531  const Elf_Shdr *sec = getRelSection(Rel);
1532  switch (sec->sh_type) {
1533  default:
1534    report_fatal_error("Invalid section type in Rel!");
1535  case ELF::SHT_REL:
1536    return getRel(Rel)->r_offset;
1537  case ELF::SHT_RELA:
1538    return getRela(Rel)->r_offset;
1539  }
1540}
1541
1542template<class ELFT>
1543error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1544                                                  uint64_t &Result) const {
1545  const Elf_Shdr *sec = getRelSection(Rel);
1546  switch (sec->sh_type) {
1547    default :
1548      report_fatal_error("Invalid section type in Rel!");
1549    case ELF::SHT_REL : {
1550      Result = getRel(Rel)->getType(isMips64EL());
1551      break;
1552    }
1553    case ELF::SHT_RELA : {
1554      Result = getRela(Rel)->getType(isMips64EL());
1555      break;
1556    }
1557  }
1558  return object_error::success;
1559}
1560
1561#define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1562  case ELF::enum: Res = #enum; break;
1563
1564template<class ELFT>
1565StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const {
1566  StringRef Res = "Unknown";
1567  switch (Header->e_machine) {
1568  case ELF::EM_X86_64:
1569    switch (Type) {
1570      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1571      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1572      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1573      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1574      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1575      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1576      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1577      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1578      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1579      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1580      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1581      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1582      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1583      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1584      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1585      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1586      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1587      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1588      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1589      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1590      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1591      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1592      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1593      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1594      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1595      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1596      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1597      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT64);
1598      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL64);
1599      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC64);
1600      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPLT64);
1601      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLTOFF64);
1602      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1603      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1604      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1605      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1606      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1607      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_IRELATIVE);
1608    default: break;
1609    }
1610    break;
1611  case ELF::EM_386:
1612    switch (Type) {
1613      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1614      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1615      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1616      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1617      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1618      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1619      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1620      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1621      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1622      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1623      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1624      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1625      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1626      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1627      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1628      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1629      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1630      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1631      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1632      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1633      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1634      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1635      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1636      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1637      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1638      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1639      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1640      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1641      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1642      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1643      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1644      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1645      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1646      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1647      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1648      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1649      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1650      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1651      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1652      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1653    default: break;
1654    }
1655    break;
1656  case ELF::EM_MIPS:
1657    switch (Type) {
1658      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE);
1659      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16);
1660      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32);
1661      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32);
1662      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26);
1663      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16);
1664      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16);
1665      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16);
1666      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL);
1667      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16);
1668      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16);
1669      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16);
1670      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32);
1671      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_UNUSED1);
1672      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_UNUSED2);
1673      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5);
1674      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6);
1675      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64);
1676      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP);
1677      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE);
1678      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST);
1679      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16);
1680      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16);
1681      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB);
1682      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A);
1683      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B);
1684      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE);
1685      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER);
1686      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST);
1687      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16);
1688      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16);
1689      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP);
1690      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16);
1691      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE);
1692      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP);
1693      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT);
1694      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR);
1695      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32);
1696      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32);
1697      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64);
1698      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64);
1699      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD);
1700      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM);
1701      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16);
1702      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16);
1703      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL);
1704      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32);
1705      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64);
1706      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16);
1707      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16);
1708      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT);
1709      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY);
1710      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT);
1711      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NUM);
1712    default: break;
1713    }
1714    break;
1715  case ELF::EM_AARCH64:
1716    switch (Type) {
1717      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1718      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1719      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1720      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1721      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1722      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1723      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1724      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1725      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1726      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1727      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1728      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1729      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1730      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1731      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1732      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1733      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1734      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1735      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1736      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1737      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1738      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1739      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1740      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1741      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1742      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1743      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1744      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1745      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1746      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1747      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1748      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1749      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1750      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1751      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1752      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1753      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1754      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1755      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1756      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1757      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1758      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1759      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1760      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1761      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1762      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1763      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1764      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1765      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1766      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1767      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1768      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1769      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1770      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1771      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1772      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1773      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1774      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1775      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1776      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1777      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1778      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1779      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1780      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1781      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1782      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1783      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1784      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1785      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1786      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1787      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1788      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1789      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1790    default: break;
1791    }
1792    break;
1793  case ELF::EM_ARM:
1794    switch (Type) {
1795      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1796      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1797      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1798      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1799      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1800      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1801      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1802      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1803      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1804      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1805      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1806      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1807      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1808      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1809      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1810      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1811      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1812      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1813      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1814      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1815      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1816      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1817      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1818      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1819      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1820      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1821      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1822      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1823      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1824      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1825      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1826      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1827      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1828      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1829      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1830      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1831      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1832      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1833      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1834      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1835      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1836      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1837      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1838      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1839      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1840      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1841      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1842      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1843      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1844      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1845      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1846      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1847      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1848      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1849      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1850      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1851      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1852      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1853      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1854      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1855      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1856      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1857      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1858      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1859      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1860      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1861      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1862      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1863      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1864      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1865      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1866      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1867      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1868      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1869      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1870      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1871      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1872      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1873      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1874      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1875      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1876      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1877      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1878      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1879      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1880      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1881      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1882      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1883      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1884      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1885      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1886      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1887      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1888      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1889      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1890      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1891      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1892      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1893      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1894      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1895      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1896      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1897      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1898      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1899      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1900      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1901      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1902      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1903      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1904      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1905      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1906      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1907      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1908      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1909      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1910      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1911      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1912      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1913      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1914      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1915      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1916      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1917      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1918      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1919      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1920      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1921      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1922      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1923      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1924      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1925      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1926    default: break;
1927    }
1928    break;
1929  case ELF::EM_HEXAGON:
1930    switch (Type) {
1931      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1932      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1933      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1934      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1935      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1936      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1937      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1938      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1939      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1940      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1941      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1942      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1943      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1944      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1945      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1946      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1947      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1948      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1949      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1950      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1951      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1952      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1953      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1954      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1955      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1956      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1957      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1958      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1959      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1960      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1961      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1962      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1963      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1964      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1965      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1966      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1967      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1968      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1969      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1970      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1971      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1972      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1973      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1974      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1975      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1976      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1977      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1978      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1979      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1980      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1981      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1982      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1983      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1984      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1985      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1986      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1987      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1988      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1989      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1990      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1991      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1992      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1993      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1994      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1995      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1996      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1997      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1998      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1999      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
2000      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
2001      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
2002      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
2003      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
2004      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
2005      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
2006      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
2007      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
2008      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
2009      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
2010      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
2011      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
2012      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
2013      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
2014      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
2015      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
2016      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
2017    default: break;
2018    }
2019    break;
2020  case ELF::EM_PPC:
2021    switch (Type) {
2022      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_NONE);
2023      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR32);
2024      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR24);
2025      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16);
2026      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_LO);
2027      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HI);
2028      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HA);
2029      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14);
2030      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRTAKEN);
2031      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRNTAKEN);
2032      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL24);
2033      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14);
2034      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRTAKEN);
2035      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRNTAKEN);
2036      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16);
2037      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_LO);
2038      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HI);
2039      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HA);
2040      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32);
2041      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TLS);
2042      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPMOD32);
2043      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16);
2044      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_LO);
2045      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HI);
2046      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HA);
2047      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL32);
2048      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16);
2049      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_LO);
2050      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_HI);
2051      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL16_HA);
2052      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPREL32);
2053      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16);
2054      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_LO);
2055      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_HI);
2056      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSGD16_HA);
2057      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16);
2058      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_LO);
2059      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_HI);
2060      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TLSLD16_HA);
2061      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16);
2062      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_LO);
2063      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_HI);
2064      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_TPREL16_HA);
2065      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16);
2066      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_LO);
2067      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_HI);
2068      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT_DTPREL16_HA);
2069      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TLSGD);
2070      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TLSLD);
2071      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16);
2072      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_LO);
2073      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_HI);
2074      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL16_HA);
2075    default: break;
2076    }
2077    break;
2078  case ELF::EM_PPC64:
2079    switch (Type) {
2080      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_NONE);
2081      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR32);
2082      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR24);
2083      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16);
2084      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO);
2085      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HI);
2086      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HA);
2087      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14);
2088      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14_BRTAKEN);
2089      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14_BRNTAKEN);
2090      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL24);
2091      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14);
2092      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14_BRTAKEN);
2093      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL14_BRNTAKEN);
2094      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16);
2095      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_LO);
2096      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_HI);
2097      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_HA);
2098      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32);
2099      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64);
2100      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER);
2101      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHERA);
2102      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST);
2103      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHESTA);
2104      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64);
2105      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16);
2106      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO);
2107      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HI);
2108      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA);
2109      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC);
2110      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS);
2111      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO_DS);
2112      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_DS);
2113      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT16_LO_DS);
2114      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_DS);
2115      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO_DS);
2116      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLS);
2117      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPMOD64);
2118      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16);
2119      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO);
2120      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HI);
2121      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HA);
2122      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL64);
2123      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16);
2124      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO);
2125      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HI);
2126      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HA);
2127      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL64);
2128      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16);
2129      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_LO);
2130      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HI);
2131      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HA);
2132      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16);
2133      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_LO);
2134      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HI);
2135      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HA);
2136      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_DS);
2137      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_LO_DS);
2138      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HI);
2139      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HA);
2140      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_DS);
2141      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_LO_DS);
2142      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_HI);
2143      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_DTPREL16_HA);
2144      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_DS);
2145      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO_DS);
2146      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHER);
2147      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHERA);
2148      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHEST);
2149      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HIGHESTA);
2150      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_DS);
2151      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO_DS);
2152      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHER);
2153      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHERA);
2154      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHEST);
2155      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HIGHESTA);
2156      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSGD);
2157      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSLD);
2158      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16);
2159      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_LO);
2160      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_HI);
2161      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL16_HA);
2162    default: break;
2163    }
2164    break;
2165  case ELF::EM_S390:
2166    switch (Type) {
2167      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_NONE);
2168      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_8);
2169      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_12);
2170      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_16);
2171      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_32);
2172      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32);
2173      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT12);
2174      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT32);
2175      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32);
2176      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_COPY);
2177      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GLOB_DAT);
2178      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_JMP_SLOT);
2179      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_RELATIVE);
2180      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF);
2181      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPC);
2182      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT16);
2183      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16);
2184      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16DBL);
2185      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT16DBL);
2186      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32DBL);
2187      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32DBL);
2188      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPCDBL);
2189      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_64);
2190      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC64);
2191      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT64);
2192      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT64);
2193      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTENT);
2194      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF16);
2195      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF64);
2196      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT12);
2197      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT16);
2198      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT32);
2199      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT64);
2200      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLTENT);
2201      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF16);
2202      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF32);
2203      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF64);
2204      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LOAD);
2205      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GDCALL);
2206      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDCALL);
2207      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD32);
2208      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD64);
2209      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE12);
2210      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE32);
2211      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE64);
2212      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM32);
2213      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM64);
2214      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE32);
2215      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE64);
2216      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IEENT);
2217      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE32);
2218      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE64);
2219      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO32);
2220      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO64);
2221      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPMOD);
2222      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPOFF);
2223      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_TPOFF);
2224      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_20);
2225      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT20);
2226      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT20);
2227      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE20);
2228      LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_IRELATIVE);
2229    default: break;
2230    }
2231    break;
2232  default: break;
2233  }
2234  return Res;
2235}
2236
2237#undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
2238
2239template<class ELFT>
2240error_code ELFObjectFile<ELFT>::getRelocationTypeName(
2241    DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2242  const Elf_Shdr *sec = getRelSection(Rel);
2243  uint32_t type;
2244  switch (sec->sh_type) {
2245    default :
2246      return object_error::parse_failed;
2247    case ELF::SHT_REL : {
2248      type = getRel(Rel)->getType(isMips64EL());
2249      break;
2250    }
2251    case ELF::SHT_RELA : {
2252      type = getRela(Rel)->getType(isMips64EL());
2253      break;
2254    }
2255  }
2256
2257  if (!isMips64EL()) {
2258    StringRef Name = getRelocationTypeName(type);
2259    Result.append(Name.begin(), Name.end());
2260  } else {
2261    uint8_t Type1 = (type >>  0) & 0xFF;
2262    uint8_t Type2 = (type >>  8) & 0xFF;
2263    uint8_t Type3 = (type >> 16) & 0xFF;
2264
2265    // Concat all three relocation type names.
2266    StringRef Name = getRelocationTypeName(Type1);
2267    Result.append(Name.begin(), Name.end());
2268
2269    Name = getRelocationTypeName(Type2);
2270    Result.append(1, '/');
2271    Result.append(Name.begin(), Name.end());
2272
2273    Name = getRelocationTypeName(Type3);
2274    Result.append(1, '/');
2275    Result.append(Name.begin(), Name.end());
2276  }
2277
2278  return object_error::success;
2279}
2280
2281template<class ELFT>
2282error_code ELFObjectFile<ELFT>::getRelocationAddend(
2283    DataRefImpl Rel, int64_t &Result) const {
2284  const Elf_Shdr *sec = getRelSection(Rel);
2285  switch (sec->sh_type) {
2286    default :
2287      report_fatal_error("Invalid section type in Rel!");
2288    case ELF::SHT_REL : {
2289      Result = 0;
2290      return object_error::success;
2291    }
2292    case ELF::SHT_RELA : {
2293      Result = getRela(Rel)->r_addend;
2294      return object_error::success;
2295    }
2296  }
2297}
2298
2299template<class ELFT>
2300error_code ELFObjectFile<ELFT>::getRelocationValueString(
2301    DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
2302  const Elf_Shdr *sec = getRelSection(Rel);
2303  uint8_t type;
2304  StringRef res;
2305  int64_t addend = 0;
2306  uint16_t symbol_index = 0;
2307  switch (sec->sh_type) {
2308    default:
2309      return object_error::parse_failed;
2310    case ELF::SHT_REL: {
2311      type = getRel(Rel)->getType(isMips64EL());
2312      symbol_index = getRel(Rel)->getSymbol(isMips64EL());
2313      // TODO: Read implicit addend from section data.
2314      break;
2315    }
2316    case ELF::SHT_RELA: {
2317      type = getRela(Rel)->getType(isMips64EL());
2318      symbol_index = getRela(Rel)->getSymbol(isMips64EL());
2319      addend = getRela(Rel)->r_addend;
2320      break;
2321    }
2322  }
2323  const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2324  StringRef symname;
2325  if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2326    return ec;
2327  switch (Header->e_machine) {
2328  case ELF::EM_X86_64:
2329    switch (type) {
2330    case ELF::R_X86_64_PC8:
2331    case ELF::R_X86_64_PC16:
2332    case ELF::R_X86_64_PC32: {
2333        std::string fmtbuf;
2334        raw_string_ostream fmt(fmtbuf);
2335        fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2336        fmt.flush();
2337        Result.append(fmtbuf.begin(), fmtbuf.end());
2338      }
2339      break;
2340    case ELF::R_X86_64_8:
2341    case ELF::R_X86_64_16:
2342    case ELF::R_X86_64_32:
2343    case ELF::R_X86_64_32S:
2344    case ELF::R_X86_64_64: {
2345        std::string fmtbuf;
2346        raw_string_ostream fmt(fmtbuf);
2347        fmt << symname << (addend < 0 ? "" : "+") << addend;
2348        fmt.flush();
2349        Result.append(fmtbuf.begin(), fmtbuf.end());
2350      }
2351      break;
2352    default:
2353      res = "Unknown";
2354    }
2355    break;
2356  case ELF::EM_AARCH64: {
2357    std::string fmtbuf;
2358    raw_string_ostream fmt(fmtbuf);
2359    fmt << symname;
2360    if (addend != 0)
2361      fmt << (addend < 0 ? "" : "+") << addend;
2362    fmt.flush();
2363    Result.append(fmtbuf.begin(), fmtbuf.end());
2364    break;
2365  }
2366  case ELF::EM_ARM:
2367  case ELF::EM_HEXAGON:
2368    res = symname;
2369    break;
2370  default:
2371    res = "Unknown";
2372  }
2373  if (Result.empty())
2374    Result.append(res.begin(), res.end());
2375  return object_error::success;
2376}
2377
2378// Verify that the last byte in the string table in a null.
2379template<class ELFT>
2380void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2381  const char *strtab = (const char*)base() + sh->sh_offset;
2382  if (strtab[sh->sh_size - 1] != 0)
2383    // FIXME: Proper error handling.
2384    report_fatal_error("String table must end with a null terminator!");
2385}
2386
2387template<class ELFT>
2388ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2389  : ObjectFile(getELFType(
2390      static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2391      ELFT::Is64Bits),
2392      Object)
2393  , isDyldELFObject(false)
2394  , SectionHeaderTable(0)
2395  , dot_shstrtab_sec(0)
2396  , dot_strtab_sec(0)
2397  , dot_dynstr_sec(0)
2398  , dot_dynamic_sec(0)
2399  , dot_gnu_version_sec(0)
2400  , dot_gnu_version_r_sec(0)
2401  , dot_gnu_version_d_sec(0)
2402  , dt_soname(0)
2403 {
2404
2405  const uint64_t FileSize = Data->getBufferSize();
2406
2407  if (sizeof(Elf_Ehdr) > FileSize)
2408    // FIXME: Proper error handling.
2409    report_fatal_error("File too short!");
2410
2411  Header = reinterpret_cast<const Elf_Ehdr *>(base());
2412
2413  if (Header->e_shoff == 0)
2414    return;
2415
2416  const uint64_t SectionTableOffset = Header->e_shoff;
2417
2418  if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2419    // FIXME: Proper error handling.
2420    report_fatal_error("Section header table goes past end of file!");
2421
2422  // The getNumSections() call below depends on SectionHeaderTable being set.
2423  SectionHeaderTable =
2424    reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2425  const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2426
2427  if (SectionTableOffset + SectionTableSize > FileSize)
2428    // FIXME: Proper error handling.
2429    report_fatal_error("Section table goes past end of file!");
2430
2431  // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2432  const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2433  const Elf_Shdr* sh = SectionHeaderTable;
2434
2435  SymbolTableIndex = -1;
2436  DynamicSymbolTableIndex = -1;
2437
2438  for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2439    switch (sh->sh_type) {
2440    case ELF::SHT_SYMTAB_SHNDX: {
2441      if (SymbolTableSectionHeaderIndex)
2442        // FIXME: Proper error handling.
2443        report_fatal_error("More than one .symtab_shndx!");
2444      SymbolTableSectionHeaderIndex = sh;
2445      break;
2446    }
2447    case ELF::SHT_SYMTAB: {
2448      if (SymbolTableIndex != -1)
2449        report_fatal_error("More than one SHT_SYMTAB!");
2450      SymbolTableIndex = i;
2451      break;
2452    }
2453    case ELF::SHT_DYNSYM: {
2454      if (DynamicSymbolTableIndex != -1)
2455        // FIXME: Proper error handling.
2456        report_fatal_error("More than one SHT_DYNSYM!");
2457      DynamicSymbolTableIndex = i;
2458      break;
2459    }
2460    case ELF::SHT_REL:
2461    case ELF::SHT_RELA:
2462      break;
2463    case ELF::SHT_DYNAMIC: {
2464      if (dot_dynamic_sec != NULL)
2465        // FIXME: Proper error handling.
2466        report_fatal_error("More than one .dynamic!");
2467      dot_dynamic_sec = sh;
2468      break;
2469    }
2470    case ELF::SHT_GNU_versym: {
2471      if (dot_gnu_version_sec != NULL)
2472        // FIXME: Proper error handling.
2473        report_fatal_error("More than one .gnu.version section!");
2474      dot_gnu_version_sec = sh;
2475      break;
2476    }
2477    case ELF::SHT_GNU_verdef: {
2478      if (dot_gnu_version_d_sec != NULL)
2479        // FIXME: Proper error handling.
2480        report_fatal_error("More than one .gnu.version_d section!");
2481      dot_gnu_version_d_sec = sh;
2482      break;
2483    }
2484    case ELF::SHT_GNU_verneed: {
2485      if (dot_gnu_version_r_sec != NULL)
2486        // FIXME: Proper error handling.
2487        report_fatal_error("More than one .gnu.version_r section!");
2488      dot_gnu_version_r_sec = sh;
2489      break;
2490    }
2491    }
2492    ++sh;
2493  }
2494
2495  // Get string table sections.
2496  dot_shstrtab_sec = getSection(getStringTableIndex());
2497  if (dot_shstrtab_sec) {
2498    // Verify that the last byte in the string table in a null.
2499    VerifyStrTab(dot_shstrtab_sec);
2500  }
2501
2502  // Merge this into the above loop.
2503  for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2504                  *e = i + getNumSections() * Header->e_shentsize;
2505                   i != e; i += Header->e_shentsize) {
2506    const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2507    if (sh->sh_type == ELF::SHT_STRTAB) {
2508      StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2509      if (SectionName == ".strtab") {
2510        if (dot_strtab_sec != 0)
2511          // FIXME: Proper error handling.
2512          report_fatal_error("Already found section named .strtab!");
2513        dot_strtab_sec = sh;
2514        VerifyStrTab(dot_strtab_sec);
2515      } else if (SectionName == ".dynstr") {
2516        if (dot_dynstr_sec != 0)
2517          // FIXME: Proper error handling.
2518          report_fatal_error("Already found section named .dynstr!");
2519        dot_dynstr_sec = sh;
2520        VerifyStrTab(dot_dynstr_sec);
2521      }
2522    }
2523  }
2524
2525  // Build symbol name side-mapping if there is one.
2526  if (SymbolTableSectionHeaderIndex) {
2527    const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2528                                      SymbolTableSectionHeaderIndex->sh_offset);
2529    error_code ec;
2530    for (symbol_iterator si = begin_symbols(),
2531                         se = end_symbols(); si != se; si.increment(ec)) {
2532      if (ec)
2533        report_fatal_error("Fewer extended symbol table entries than symbols!");
2534      if (*ShndxTable != ELF::SHN_UNDEF)
2535        ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2536      ++ShndxTable;
2537    }
2538  }
2539}
2540
2541// Get the symbol table index in the symtab section given a symbol
2542template<class ELFT>
2543uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2544  const Elf_Shdr *SymTab = getSection(SymbolTableIndex);
2545  uintptr_t SymLoc = uintptr_t(Sym);
2546  uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2547  assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2548  uint64_t SymOffset = SymLoc - SymTabLoc;
2549  assert(SymOffset % SymTab->sh_entsize == 0 &&
2550         "Symbol not multiple of symbol size!");
2551  return SymOffset / SymTab->sh_entsize;
2552}
2553
2554template<class ELFT>
2555symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2556  DataRefImpl SymbolData;
2557  if (SymbolTableIndex == -1) {
2558    SymbolData.d.a = 0;
2559    SymbolData.d.b = 0;
2560  } else {
2561    SymbolData.d.a = 0;
2562    SymbolData.d.b = SymbolTableIndex;
2563  }
2564  return symbol_iterator(SymbolRef(SymbolData, this));
2565}
2566
2567template<class ELFT>
2568symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2569  DataRefImpl SymbolData;
2570  if (SymbolTableIndex == -1) {
2571    SymbolData.d.a = 0;
2572    SymbolData.d.b = 0;
2573  } else {
2574    const Elf_Shdr *SymbolTableSection = getSection(SymbolTableIndex);
2575    SymbolData.d.a = SymbolTableSection->getEntityCount();
2576    SymbolData.d.b = SymbolTableIndex;
2577  }
2578  return symbol_iterator(SymbolRef(SymbolData, this));
2579}
2580
2581template<class ELFT>
2582symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2583  DataRefImpl SymbolData;
2584  if (DynamicSymbolTableIndex == -1) {
2585    SymbolData.d.a = 0;
2586    SymbolData.d.b = 0;
2587  } else {
2588    SymbolData.d.a = 0;
2589    SymbolData.d.b = DynamicSymbolTableIndex;
2590  }
2591  return symbol_iterator(SymbolRef(SymbolData, this));
2592}
2593
2594template<class ELFT>
2595symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2596  DataRefImpl SymbolData;
2597  if (DynamicSymbolTableIndex == -1) {
2598    SymbolData.d.a = 0;
2599    SymbolData.d.b = 0;
2600  } else {
2601    const Elf_Shdr *SymbolTableSection = getSection(DynamicSymbolTableIndex);
2602    SymbolData.d.a = SymbolTableSection->getEntityCount();
2603    SymbolData.d.b = DynamicSymbolTableIndex;
2604  }
2605  return symbol_iterator(SymbolRef(SymbolData, this));
2606}
2607
2608template<class ELFT>
2609section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2610  DataRefImpl ret;
2611  ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2612  return section_iterator(SectionRef(ret, this));
2613}
2614
2615template<class ELFT>
2616section_iterator ELFObjectFile<ELFT>::end_sections() const {
2617  DataRefImpl ret;
2618  ret.p = reinterpret_cast<intptr_t>(base()
2619                                     + Header->e_shoff
2620                                     + (Header->e_shentsize*getNumSections()));
2621  return section_iterator(SectionRef(ret, this));
2622}
2623
2624template<class ELFT>
2625typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2626ELFObjectFile<ELFT>::begin_dynamic_table() const {
2627  if (dot_dynamic_sec)
2628    return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2629                            (const char *)base() + dot_dynamic_sec->sh_offset);
2630  return Elf_Dyn_iterator(0, 0);
2631}
2632
2633template<class ELFT>
2634typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2635ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2636  if (dot_dynamic_sec) {
2637    Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2638                         (const char *)base() + dot_dynamic_sec->sh_offset +
2639                         dot_dynamic_sec->sh_size);
2640
2641    if (NULLEnd) {
2642      Elf_Dyn_iterator Start = begin_dynamic_table();
2643      while (Start != Ret && Start->getTag() != ELF::DT_NULL)
2644        ++Start;
2645
2646      // Include the DT_NULL.
2647      if (Start != Ret)
2648        ++Start;
2649      Ret = Start;
2650    }
2651    return Ret;
2652  }
2653  return Elf_Dyn_iterator(0, 0);
2654}
2655
2656template<class ELFT>
2657StringRef ELFObjectFile<ELFT>::getLoadName() const {
2658  if (!dt_soname) {
2659    // Find the DT_SONAME entry
2660    Elf_Dyn_iterator it = begin_dynamic_table();
2661    Elf_Dyn_iterator ie = end_dynamic_table();
2662    while (it != ie && it->getTag() != ELF::DT_SONAME)
2663      ++it;
2664
2665    if (it != ie) {
2666      if (dot_dynstr_sec == NULL)
2667        report_fatal_error("Dynamic string table is missing");
2668      dt_soname = getString(dot_dynstr_sec, it->getVal());
2669    } else {
2670      dt_soname = "";
2671    }
2672  }
2673  return dt_soname;
2674}
2675
2676template<class ELFT>
2677library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2678  // Find the first DT_NEEDED entry
2679  Elf_Dyn_iterator i = begin_dynamic_table();
2680  Elf_Dyn_iterator e = end_dynamic_table();
2681  while (i != e && i->getTag() != ELF::DT_NEEDED)
2682    ++i;
2683
2684  DataRefImpl DRI;
2685  DRI.p = reinterpret_cast<uintptr_t>(i.get());
2686  return library_iterator(LibraryRef(DRI, this));
2687}
2688
2689template<class ELFT>
2690error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2691                                               LibraryRef &Result) const {
2692  // Use the same DataRefImpl format as DynRef.
2693  Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2694                                        reinterpret_cast<const char *>(Data.p));
2695  Elf_Dyn_iterator e = end_dynamic_table();
2696
2697  // Skip the current dynamic table entry and find the next DT_NEEDED entry.
2698  do
2699    ++i;
2700  while (i != e && i->getTag() != ELF::DT_NEEDED);
2701
2702  DataRefImpl DRI;
2703  DRI.p = reinterpret_cast<uintptr_t>(i.get());
2704  Result = LibraryRef(DRI, this);
2705  return object_error::success;
2706}
2707
2708template<class ELFT>
2709error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2710                                               StringRef &Res) const {
2711  Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2712                                        reinterpret_cast<const char *>(Data.p));
2713  if (i == end_dynamic_table())
2714    report_fatal_error("getLibraryPath() called on iterator end");
2715
2716  if (i->getTag() != ELF::DT_NEEDED)
2717    report_fatal_error("Invalid library_iterator");
2718
2719  // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2720  // THis works as long as DT_STRTAB == .dynstr. This is true most of
2721  // the time, but the specification allows exceptions.
2722  // TODO: This should really use DT_STRTAB instead. Doing this requires
2723  // reading the program headers.
2724  if (dot_dynstr_sec == NULL)
2725    report_fatal_error("Dynamic string table is missing");
2726  Res = getString(dot_dynstr_sec, i->getVal());
2727  return object_error::success;
2728}
2729
2730template<class ELFT>
2731library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2732  Elf_Dyn_iterator e = end_dynamic_table();
2733  DataRefImpl DRI;
2734  DRI.p = reinterpret_cast<uintptr_t>(e.get());
2735  return library_iterator(LibraryRef(DRI, this));
2736}
2737
2738template<class ELFT>
2739uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2740  return ELFT::Is64Bits ? 8 : 4;
2741}
2742
2743template<class ELFT>
2744StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2745  switch(Header->e_ident[ELF::EI_CLASS]) {
2746  case ELF::ELFCLASS32:
2747    switch(Header->e_machine) {
2748    case ELF::EM_386:
2749      return "ELF32-i386";
2750    case ELF::EM_X86_64:
2751      return "ELF32-x86-64";
2752    case ELF::EM_ARM:
2753      return "ELF32-arm";
2754    case ELF::EM_HEXAGON:
2755      return "ELF32-hexagon";
2756    case ELF::EM_MIPS:
2757      return "ELF32-mips";
2758    case ELF::EM_PPC:
2759      return "ELF32-ppc";
2760    default:
2761      return "ELF32-unknown";
2762    }
2763  case ELF::ELFCLASS64:
2764    switch(Header->e_machine) {
2765    case ELF::EM_386:
2766      return "ELF64-i386";
2767    case ELF::EM_X86_64:
2768      return "ELF64-x86-64";
2769    case ELF::EM_AARCH64:
2770      return "ELF64-aarch64";
2771    case ELF::EM_PPC64:
2772      return "ELF64-ppc64";
2773    case ELF::EM_S390:
2774      return "ELF64-s390";
2775    default:
2776      return "ELF64-unknown";
2777    }
2778  default:
2779    // FIXME: Proper error handling.
2780    report_fatal_error("Invalid ELFCLASS!");
2781  }
2782}
2783
2784template<class ELFT>
2785unsigned ELFObjectFile<ELFT>::getArch() const {
2786  switch(Header->e_machine) {
2787  case ELF::EM_386:
2788    return Triple::x86;
2789  case ELF::EM_X86_64:
2790    return Triple::x86_64;
2791  case ELF::EM_AARCH64:
2792    return Triple::aarch64;
2793  case ELF::EM_ARM:
2794    return Triple::arm;
2795  case ELF::EM_HEXAGON:
2796    return Triple::hexagon;
2797  case ELF::EM_MIPS:
2798    return (ELFT::TargetEndianness == support::little) ?
2799           Triple::mipsel : Triple::mips;
2800  case ELF::EM_PPC64:
2801    return (ELFT::TargetEndianness == support::little) ?
2802           Triple::ppc64le : Triple::ppc64;
2803  case ELF::EM_S390:
2804    return Triple::systemz;
2805  default:
2806    return Triple::UnknownArch;
2807  }
2808}
2809
2810template<class ELFT>
2811uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2812  assert(Header && "Header not initialized!");
2813  if (Header->e_shnum == ELF::SHN_UNDEF) {
2814    assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2815    return SectionHeaderTable->sh_size;
2816  }
2817  return Header->e_shnum;
2818}
2819
2820template<class ELFT>
2821uint64_t
2822ELFObjectFile<ELFT>::getStringTableIndex() const {
2823  if (Header->e_shnum == ELF::SHN_UNDEF) {
2824    if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2825      return SectionHeaderTable->sh_link;
2826    if (Header->e_shstrndx >= getNumSections())
2827      return 0;
2828  }
2829  return Header->e_shstrndx;
2830}
2831
2832template<class ELFT>
2833template<typename T>
2834inline const T *
2835ELFObjectFile<ELFT>::getEntry(uint32_t Section, uint32_t Entry) const {
2836  return getEntry<T>(getSection(Section), Entry);
2837}
2838
2839template<class ELFT>
2840template<typename T>
2841inline const T *
2842ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2843  return reinterpret_cast<const T *>(
2844           base()
2845           + Section->sh_offset
2846           + (Entry * Section->sh_entsize));
2847}
2848
2849template<class ELFT>
2850const typename ELFObjectFile<ELFT>::Elf_Sym *
2851ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2852  return getEntry<Elf_Sym>(Symb.d.b, Symb.d.a);
2853}
2854
2855template<class ELFT>
2856const typename ELFObjectFile<ELFT>::Elf_Rel *
2857ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2858  return getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
2859}
2860
2861template<class ELFT>
2862const typename ELFObjectFile<ELFT>::Elf_Rela *
2863ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2864  return getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
2865}
2866
2867template<class ELFT>
2868const typename ELFObjectFile<ELFT>::Elf_Shdr *
2869ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2870  const Elf_Shdr *sec = getSection(Symb.d.b);
2871  if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2872    // FIXME: Proper error handling.
2873    report_fatal_error("Invalid symbol table section!");
2874  return sec;
2875}
2876
2877template<class ELFT>
2878const typename ELFObjectFile<ELFT>::Elf_Shdr *
2879ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2880  if (index == 0)
2881    return 0;
2882  if (!SectionHeaderTable || index >= getNumSections())
2883    // FIXME: Proper error handling.
2884    report_fatal_error("Invalid section index!");
2885
2886  return reinterpret_cast<const Elf_Shdr *>(
2887         reinterpret_cast<const char *>(SectionHeaderTable)
2888         + (index * Header->e_shentsize));
2889}
2890
2891template<class ELFT>
2892const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2893                                           ELF::Elf32_Word offset) const {
2894  return getString(getSection(section), offset);
2895}
2896
2897template<class ELFT>
2898const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2899                                           ELF::Elf32_Word offset) const {
2900  assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2901  if (offset >= section->sh_size)
2902    // FIXME: Proper error handling.
2903    report_fatal_error("Symbol name offset outside of string table!");
2904  return (const char *)base() + section->sh_offset + offset;
2905}
2906
2907template<class ELFT>
2908error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2909                                              const Elf_Sym *symb,
2910                                              StringRef &Result) const {
2911  if (symb->st_name == 0) {
2912    const Elf_Shdr *section = getSection(symb);
2913    if (!section)
2914      Result = "";
2915    else
2916      Result = getString(dot_shstrtab_sec, section->sh_name);
2917    return object_error::success;
2918  }
2919
2920  if (DynamicSymbolTableIndex != -1 &&
2921      section == getSection(DynamicSymbolTableIndex)) {
2922    // Symbol is in .dynsym, use .dynstr string table
2923    Result = getString(dot_dynstr_sec, symb->st_name);
2924  } else {
2925    // Use the default symbol table name section.
2926    Result = getString(dot_strtab_sec, symb->st_name);
2927  }
2928  return object_error::success;
2929}
2930
2931template<class ELFT>
2932error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2933                                               StringRef &Result) const {
2934  Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2935  return object_error::success;
2936}
2937
2938template<class ELFT>
2939error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2940                                                 const Elf_Sym *symb,
2941                                                 StringRef &Version,
2942                                                 bool &IsDefault) const {
2943  // Handle non-dynamic symbols.
2944  if (section != getSection(DynamicSymbolTableIndex)) {
2945    // Non-dynamic symbols can have versions in their names
2946    // A name of the form 'foo@V1' indicates version 'V1', non-default.
2947    // A name of the form 'foo@@V2' indicates version 'V2', default version.
2948    StringRef Name;
2949    error_code ec = getSymbolName(section, symb, Name);
2950    if (ec != object_error::success)
2951      return ec;
2952    size_t atpos = Name.find('@');
2953    if (atpos == StringRef::npos) {
2954      Version = "";
2955      IsDefault = false;
2956      return object_error::success;
2957    }
2958    ++atpos;
2959    if (atpos < Name.size() && Name[atpos] == '@') {
2960      IsDefault = true;
2961      ++atpos;
2962    } else {
2963      IsDefault = false;
2964    }
2965    Version = Name.substr(atpos);
2966    return object_error::success;
2967  }
2968
2969  // This is a dynamic symbol. Look in the GNU symbol version table.
2970  if (dot_gnu_version_sec == NULL) {
2971    // No version table.
2972    Version = "";
2973    IsDefault = false;
2974    return object_error::success;
2975  }
2976
2977  // Determine the position in the symbol table of this entry.
2978  const char *sec_start = (const char*)base() + section->sh_offset;
2979  size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2980
2981  // Get the corresponding version index entry
2982  const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2983  size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2984
2985  // Special markers for unversioned symbols.
2986  if (version_index == ELF::VER_NDX_LOCAL ||
2987      version_index == ELF::VER_NDX_GLOBAL) {
2988    Version = "";
2989    IsDefault = false;
2990    return object_error::success;
2991  }
2992
2993  // Lookup this symbol in the version table
2994  LoadVersionMap();
2995  if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2996    report_fatal_error("Symbol has version index without corresponding "
2997                       "define or reference entry");
2998  const VersionMapEntry &entry = VersionMap[version_index];
2999
3000  // Get the version name string
3001  size_t name_offset;
3002  if (entry.isVerdef()) {
3003    // The first Verdaux entry holds the name.
3004    name_offset = entry.getVerdef()->getAux()->vda_name;
3005  } else {
3006    name_offset = entry.getVernaux()->vna_name;
3007  }
3008  Version = getString(dot_dynstr_sec, name_offset);
3009
3010  // Set IsDefault
3011  if (entry.isVerdef()) {
3012    IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
3013  } else {
3014    IsDefault = false;
3015  }
3016
3017  return object_error::success;
3018}
3019
3020/// FIXME: Maybe we should have a base ElfObjectFile that is not a template
3021/// and make these member functions?
3022static inline error_code getELFRelocationAddend(const RelocationRef R,
3023                                                int64_t &Addend) {
3024  const ObjectFile *Obj = R.getObjectFile();
3025  DataRefImpl DRI = R.getRawDataRefImpl();
3026  // Little-endian 32-bit
3027  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
3028    return ELFObj->getRelocationAddend(DRI, Addend);
3029
3030  // Big-endian 32-bit
3031  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
3032    return ELFObj->getRelocationAddend(DRI, Addend);
3033
3034  // Little-endian 64-bit
3035  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
3036    return ELFObj->getRelocationAddend(DRI, Addend);
3037
3038  // Big-endian 64-bit
3039  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
3040    return ELFObj->getRelocationAddend(DRI, Addend);
3041
3042  llvm_unreachable("Object passed to getELFRelocationAddend() is not ELF");
3043}
3044
3045/// This is a generic interface for retrieving GNU symbol version
3046/// information from an ELFObjectFile.
3047static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
3048                                             const SymbolRef &Sym,
3049                                             StringRef &Version,
3050                                             bool &IsDefault) {
3051  // Little-endian 32-bit
3052  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
3053    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3054
3055  // Big-endian 32-bit
3056  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
3057    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3058
3059  // Little-endian 64-bit
3060  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
3061    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3062
3063  // Big-endian 64-bit
3064  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
3065    return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
3066
3067  llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
3068}
3069
3070/// This function returns the hash value for a symbol in the .dynsym section
3071/// Name of the API remains consistent as specified in the libelf
3072/// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash
3073static inline unsigned elf_hash(StringRef &symbolName) {
3074  unsigned h = 0, g;
3075  for (unsigned i = 0, j = symbolName.size(); i < j; i++) {
3076    h = (h << 4) + symbolName[i];
3077    g = h & 0xf0000000L;
3078    if (g != 0)
3079      h ^= g >> 24;
3080    h &= ~g;
3081  }
3082  return h;
3083}
3084
3085}
3086}
3087
3088#endif
3089