LLVM  4.0.0
ELFTypes.h
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1 //===- ELFTypes.h - Endian specific types for ELF ---------------*- 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 #ifndef LLVM_OBJECT_ELFTYPES_H
11 #define LLVM_OBJECT_ELFTYPES_H
12 
13 #include "llvm/ADT/ArrayRef.h"
14 #include "llvm/Object/Error.h"
15 #include "llvm/Support/ELF.h"
16 #include "llvm/Support/Endian.h"
17 #include "llvm/Support/ErrorOr.h"
18 
19 namespace llvm {
20 namespace object {
21 
23 
24 template <class ELFT> struct Elf_Ehdr_Impl;
25 template <class ELFT> struct Elf_Shdr_Impl;
26 template <class ELFT> struct Elf_Sym_Impl;
27 template <class ELFT> struct Elf_Dyn_Impl;
28 template <class ELFT> struct Elf_Phdr_Impl;
29 template <class ELFT, bool isRela> struct Elf_Rel_Impl;
30 template <class ELFT> struct Elf_Verdef_Impl;
31 template <class ELFT> struct Elf_Verdaux_Impl;
32 template <class ELFT> struct Elf_Verneed_Impl;
33 template <class ELFT> struct Elf_Vernaux_Impl;
34 template <class ELFT> struct Elf_Versym_Impl;
35 template <class ELFT> struct Elf_Hash_Impl;
36 template <class ELFT> struct Elf_GnuHash_Impl;
37 template <class ELFT> struct Elf_Chdr_Impl;
38 
39 template <endianness E, bool Is64> struct ELFType {
40 private:
41  template <typename Ty>
43 
44 public:
45  static const endianness TargetEndianness = E;
46  static const bool Is64Bits = Is64;
47 
48  typedef typename std::conditional<Is64, uint64_t, uint32_t>::type uint;
70 
76  typedef packed<uint> Addr;
77  typedef packed<uint> Off;
78 };
79 
84 
85 // Use an alignment of 2 for the typedefs since that is the worst case for
86 // ELF files in archives.
87 
88 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
89 template <endianness target_endianness> struct ELFDataTypeTypedefHelperCommon {
91  uint16_t, target_endianness, 2> Elf_Half;
93  uint32_t, target_endianness, 2> Elf_Word;
95  int32_t, target_endianness, 2> Elf_Sword;
97  uint64_t, target_endianness, 2> Elf_Xword;
99  int64_t, target_endianness, 2> Elf_Sxword;
100 };
101 
102 template <class ELFT> struct ELFDataTypeTypedefHelper;
103 
104 /// ELF 32bit types.
105 template <endianness TargetEndianness>
106 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, false>>
107  : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
110  value_type, TargetEndianness, 2> Elf_Addr;
112  value_type, TargetEndianness, 2> Elf_Off;
113 };
114 
115 /// ELF 64bit types.
116 template <endianness TargetEndianness>
117 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, true>>
118  : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
119  typedef uint64_t value_type;
121  value_type, TargetEndianness, 2> Elf_Addr;
123  value_type, TargetEndianness, 2> Elf_Off;
124 };
125 
126 // I really don't like doing this, but the alternative is copypasta.
127 
128 #define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) \
129  typedef typename ELFT::Addr Elf_Addr; \
130  typedef typename ELFT::Off Elf_Off; \
131  typedef typename ELFT::Half Elf_Half; \
132  typedef typename ELFT::Word Elf_Word; \
133  typedef typename ELFT::Sword Elf_Sword; \
134  typedef typename ELFT::Xword Elf_Xword; \
135  typedef typename ELFT::Sxword Elf_Sxword;
136 
137 #define LLD_ELF_COMMA ,
138 #define LLVM_ELF_IMPORT_TYPES(E, W) \
139  LLVM_ELF_IMPORT_TYPES_ELFT(ELFType<E LLD_ELF_COMMA W>)
140 
141 // Section header.
142 template <class ELFT> struct Elf_Shdr_Base;
143 
144 template <endianness TargetEndianness>
145 struct Elf_Shdr_Base<ELFType<TargetEndianness, false>> {
146  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
147  Elf_Word sh_name; // Section name (index into string table)
148  Elf_Word sh_type; // Section type (SHT_*)
149  Elf_Word sh_flags; // Section flags (SHF_*)
150  Elf_Addr sh_addr; // Address where section is to be loaded
151  Elf_Off sh_offset; // File offset of section data, in bytes
152  Elf_Word sh_size; // Size of section, in bytes
153  Elf_Word sh_link; // Section type-specific header table index link
154  Elf_Word sh_info; // Section type-specific extra information
155  Elf_Word sh_addralign; // Section address alignment
156  Elf_Word sh_entsize; // Size of records contained within the section
157 };
158 
159 template <endianness TargetEndianness>
160 struct Elf_Shdr_Base<ELFType<TargetEndianness, true>> {
161  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
162  Elf_Word sh_name; // Section name (index into string table)
163  Elf_Word sh_type; // Section type (SHT_*)
164  Elf_Xword sh_flags; // Section flags (SHF_*)
165  Elf_Addr sh_addr; // Address where section is to be loaded
166  Elf_Off sh_offset; // File offset of section data, in bytes
167  Elf_Xword sh_size; // Size of section, in bytes
168  Elf_Word sh_link; // Section type-specific header table index link
169  Elf_Word sh_info; // Section type-specific extra information
170  Elf_Xword sh_addralign; // Section address alignment
171  Elf_Xword sh_entsize; // Size of records contained within the section
172 };
173 
174 template <class ELFT>
175 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
178 
179  /// @brief Get the number of entities this section contains if it has any.
180  unsigned getEntityCount() const {
181  if (sh_entsize == 0)
182  return 0;
183  return sh_size / sh_entsize;
184  }
185 };
186 
187 template <class ELFT> struct Elf_Sym_Base;
188 
189 template <endianness TargetEndianness>
190 struct Elf_Sym_Base<ELFType<TargetEndianness, false>> {
191  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
192  Elf_Word st_name; // Symbol name (index into string table)
193  Elf_Addr st_value; // Value or address associated with the symbol
194  Elf_Word st_size; // Size of the symbol
195  unsigned char st_info; // Symbol's type and binding attributes
196  unsigned char st_other; // Must be zero; reserved
197  Elf_Half st_shndx; // Which section (header table index) it's defined in
198 };
199 
200 template <endianness TargetEndianness>
201 struct Elf_Sym_Base<ELFType<TargetEndianness, true>> {
202  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
203  Elf_Word st_name; // Symbol name (index into string table)
204  unsigned char st_info; // Symbol's type and binding attributes
205  unsigned char st_other; // Must be zero; reserved
206  Elf_Half st_shndx; // Which section (header table index) it's defined in
207  Elf_Addr st_value; // Value or address associated with the symbol
208  Elf_Xword st_size; // Size of the symbol
209 };
210 
211 template <class ELFT>
212 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
217 
218  // These accessors and mutators correspond to the ELF32_ST_BIND,
219  // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
220  unsigned char getBinding() const { return st_info >> 4; }
221  unsigned char getType() const { return st_info & 0x0f; }
222  uint64_t getValue() const { return st_value; }
223  void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
224  void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
225  void setBindingAndType(unsigned char b, unsigned char t) {
226  st_info = (b << 4) + (t & 0x0f);
227  }
228 
229  /// Access to the STV_xxx flag stored in the first two bits of st_other.
230  /// STV_DEFAULT: 0
231  /// STV_INTERNAL: 1
232  /// STV_HIDDEN: 2
233  /// STV_PROTECTED: 3
234  unsigned char getVisibility() const { return st_other & 0x3; }
235  void setVisibility(unsigned char v) {
236  assert(v < 4 && "Invalid value for visibility");
237  st_other = (st_other & ~0x3) | v;
238  }
239 
240  bool isAbsolute() const { return st_shndx == ELF::SHN_ABS; }
241  bool isCommon() const {
242  return getType() == ELF::STT_COMMON || st_shndx == ELF::SHN_COMMON;
243  }
244  bool isDefined() const { return !isUndefined(); }
245  bool isProcessorSpecific() const {
246  return st_shndx >= ELF::SHN_LOPROC && st_shndx <= ELF::SHN_HIPROC;
247  }
248  bool isOSSpecific() const {
249  return st_shndx >= ELF::SHN_LOOS && st_shndx <= ELF::SHN_HIOS;
250  }
251  bool isReserved() const {
252  // ELF::SHN_HIRESERVE is 0xffff so st_shndx <= ELF::SHN_HIRESERVE is always
253  // true and some compilers warn about it.
254  return st_shndx >= ELF::SHN_LORESERVE;
255  }
256  bool isUndefined() const { return st_shndx == ELF::SHN_UNDEF; }
257  bool isExternal() const {
258  return getBinding() != ELF::STB_LOCAL;
259  }
260 
261  Expected<StringRef> getName(StringRef StrTab) const;
262 };
263 
264 template <class ELFT>
266  uint32_t Offset = this->st_name;
267  if (Offset >= StrTab.size())
269  return StringRef(StrTab.data() + Offset);
270 }
271 
272 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
273 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
274 template <class ELFT>
275 struct Elf_Versym_Impl {
277  Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
278 };
279 
280 template <class ELFT> struct Elf_Verdaux_Impl;
281 
282 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
283 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
284 template <class ELFT>
285 struct Elf_Verdef_Impl {
287  typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
288  Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
289  Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
290  Elf_Half vd_ndx; // Version index, used in .gnu.version entries
291  Elf_Half vd_cnt; // Number of Verdaux entries
292  Elf_Word vd_hash; // Hash of name
293  Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
294  Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
295 
296  /// Get the first Verdaux entry for this Verdef.
297  const Elf_Verdaux *getAux() const {
298  return reinterpret_cast<const Elf_Verdaux *>((const char *)this + vd_aux);
299  }
300 };
301 
302 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
303 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
304 template <class ELFT>
305 struct Elf_Verdaux_Impl {
307  Elf_Word vda_name; // Version name (offset in string table)
308  Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
309 };
310 
311 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
312 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
313 template <class ELFT>
314 struct Elf_Verneed_Impl {
316  Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
317  Elf_Half vn_cnt; // Number of associated Vernaux entries
318  Elf_Word vn_file; // Library name (string table offset)
319  Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
320  Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
321 };
322 
323 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
324 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
325 template <class ELFT>
326 struct Elf_Vernaux_Impl {
328  Elf_Word vna_hash; // Hash of dependency name
329  Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
330  Elf_Half vna_other; // Version index, used in .gnu.version entries
331  Elf_Word vna_name; // Dependency name
332  Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
333 };
334 
335 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
336 /// table section (.dynamic) look like.
337 template <class ELFT> struct Elf_Dyn_Base;
338 
339 template <endianness TargetEndianness>
340 struct Elf_Dyn_Base<ELFType<TargetEndianness, false>> {
341  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
342  Elf_Sword d_tag;
343  union {
344  Elf_Word d_val;
345  Elf_Addr d_ptr;
346  } d_un;
347 };
348 
349 template <endianness TargetEndianness>
350 struct Elf_Dyn_Base<ELFType<TargetEndianness, true>> {
351  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
352  Elf_Sxword d_tag;
353  union {
354  Elf_Xword d_val;
355  Elf_Addr d_ptr;
356  } d_un;
357 };
358 
359 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters.
360 template <class ELFT>
361 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
364  typedef typename std::conditional<ELFT::Is64Bits,
365  int64_t, int32_t>::type intX_t;
366  typedef typename std::conditional<ELFT::Is64Bits,
367  uint64_t, uint32_t>::type uintX_t;
368  intX_t getTag() const { return d_tag; }
369  uintX_t getVal() const { return d_un.d_val; }
370  uintX_t getPtr() const { return d_un.d_ptr; }
371 };
372 
373 template <endianness TargetEndianness>
374 struct Elf_Rel_Impl<ELFType<TargetEndianness, false>, false> {
375  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
376  static const bool IsRela = false;
377  Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
378  Elf_Word r_info; // Symbol table index and type of relocation to apply
379 
380  uint32_t getRInfo(bool isMips64EL) const {
381  assert(!isMips64EL);
382  return r_info;
383  }
384  void setRInfo(uint32_t R, bool IsMips64EL) {
385  assert(!IsMips64EL);
386  r_info = R;
387  }
388 
389  // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
390  // and ELF32_R_INFO macros defined in the ELF specification:
391  uint32_t getSymbol(bool isMips64EL) const {
392  return this->getRInfo(isMips64EL) >> 8;
393  }
394  unsigned char getType(bool isMips64EL) const {
395  return (unsigned char)(this->getRInfo(isMips64EL) & 0x0ff);
396  }
397  void setSymbol(uint32_t s, bool IsMips64EL) {
398  setSymbolAndType(s, getType(), IsMips64EL);
399  }
400  void setType(unsigned char t, bool IsMips64EL) {
401  setSymbolAndType(getSymbol(), t, IsMips64EL);
402  }
403  void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL) {
404  this->setRInfo((s << 8) + t, IsMips64EL);
405  }
406 };
407 
408 template <endianness TargetEndianness>
409 struct Elf_Rel_Impl<ELFType<TargetEndianness, false>, true>
410  : public Elf_Rel_Impl<ELFType<TargetEndianness, false>, false> {
411  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
412  static const bool IsRela = true;
413  Elf_Sword r_addend; // Compute value for relocatable field by adding this
414 };
415 
416 template <endianness TargetEndianness>
417 struct Elf_Rel_Impl<ELFType<TargetEndianness, true>, false> {
418  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
419  static const bool IsRela = false;
420  Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
421  Elf_Xword r_info; // Symbol table index and type of relocation to apply
422 
423  uint64_t getRInfo(bool isMips64EL) const {
424  uint64_t t = r_info;
425  if (!isMips64EL)
426  return t;
427  // Mips64 little endian has a "special" encoding of r_info. Instead of one
428  // 64 bit little endian number, it is a little endian 32 bit number followed
429  // by a 32 bit big endian number.
430  return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
431  ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
432  }
433  void setRInfo(uint64_t R, bool IsMips64EL) {
434  if (IsMips64EL)
435  r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
436  ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
437  else
438  r_info = R;
439  }
440 
441  // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
442  // and ELF64_R_INFO macros defined in the ELF specification:
443  uint32_t getSymbol(bool isMips64EL) const {
444  return (uint32_t)(this->getRInfo(isMips64EL) >> 32);
445  }
446  uint32_t getType(bool isMips64EL) const {
447  return (uint32_t)(this->getRInfo(isMips64EL) & 0xffffffffL);
448  }
449  void setSymbol(uint32_t s, bool IsMips64EL) {
450  setSymbolAndType(s, getType(), IsMips64EL);
451  }
452  void setType(uint32_t t, bool IsMips64EL) {
453  setSymbolAndType(getSymbol(), t, IsMips64EL);
454  }
455  void setSymbolAndType(uint32_t s, uint32_t t, bool IsMips64EL) {
456  this->setRInfo(((uint64_t)s << 32) + (t & 0xffffffffL), IsMips64EL);
457  }
458 };
459 
460 template <endianness TargetEndianness>
461 struct Elf_Rel_Impl<ELFType<TargetEndianness, true>, true>
462  : public Elf_Rel_Impl<ELFType<TargetEndianness, true>, false> {
463  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
464  static const bool IsRela = true;
465  Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
466 };
467 
468 template <class ELFT>
469 struct Elf_Ehdr_Impl {
471  unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
472  Elf_Half e_type; // Type of file (see ET_*)
473  Elf_Half e_machine; // Required architecture for this file (see EM_*)
474  Elf_Word e_version; // Must be equal to 1
475  Elf_Addr e_entry; // Address to jump to in order to start program
476  Elf_Off e_phoff; // Program header table's file offset, in bytes
477  Elf_Off e_shoff; // Section header table's file offset, in bytes
478  Elf_Word e_flags; // Processor-specific flags
479  Elf_Half e_ehsize; // Size of ELF header, in bytes
480  Elf_Half e_phentsize; // Size of an entry in the program header table
481  Elf_Half e_phnum; // Number of entries in the program header table
482  Elf_Half e_shentsize; // Size of an entry in the section header table
483  Elf_Half e_shnum; // Number of entries in the section header table
484  Elf_Half e_shstrndx; // Section header table index of section name
485  // string table
486  bool checkMagic() const {
487  return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
488  }
489  unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
490  unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
491 };
492 
493 template <class ELFT> struct Elf_Phdr_Impl;
494 
495 template <endianness TargetEndianness>
496 struct Elf_Phdr_Impl<ELFType<TargetEndianness, false>> {
497  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
498  Elf_Word p_type; // Type of segment
499  Elf_Off p_offset; // FileOffset where segment is located, in bytes
500  Elf_Addr p_vaddr; // Virtual Address of beginning of segment
501  Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
502  Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
503  Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
504  Elf_Word p_flags; // Segment flags
505  Elf_Word p_align; // Segment alignment constraint
506 };
507 
508 template <endianness TargetEndianness>
509 struct Elf_Phdr_Impl<ELFType<TargetEndianness, true>> {
510  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
511  Elf_Word p_type; // Type of segment
512  Elf_Word p_flags; // Segment flags
513  Elf_Off p_offset; // FileOffset where segment is located, in bytes
514  Elf_Addr p_vaddr; // Virtual Address of beginning of segment
515  Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
516  Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
517  Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
518  Elf_Xword p_align; // Segment alignment constraint
519 };
520 
521 // ELFT needed for endianness.
522 template <class ELFT>
523 struct Elf_Hash_Impl {
525  Elf_Word nbucket;
526  Elf_Word nchain;
527 
528  ArrayRef<Elf_Word> buckets() const {
529  return ArrayRef<Elf_Word>(&nbucket + 2, &nbucket + 2 + nbucket);
530  }
531 
533  return ArrayRef<Elf_Word>(&nbucket + 2 + nbucket,
534  &nbucket + 2 + nbucket + nchain);
535  }
536 };
537 
538 // .gnu.hash section
539 template <class ELFT>
540 struct Elf_GnuHash_Impl {
542  Elf_Word nbuckets;
543  Elf_Word symndx;
544  Elf_Word maskwords;
545  Elf_Word shift2;
546 
547  ArrayRef<Elf_Off> filter() const {
548  return ArrayRef<Elf_Off>(reinterpret_cast<const Elf_Off *>(&shift2 + 1),
549  maskwords);
550  }
551 
553  return ArrayRef<Elf_Word>(
554  reinterpret_cast<const Elf_Word *>(filter().end()), nbuckets);
555  }
556 
557  ArrayRef<Elf_Word> values(unsigned DynamicSymCount) const {
558  return ArrayRef<Elf_Word>(buckets().end(), DynamicSymCount - symndx);
559  }
560 };
561 
562 // Compressed section headers.
563 // http://www.sco.com/developers/gabi/latest/ch4.sheader.html#compression_header
564 template <endianness TargetEndianness>
565 struct Elf_Chdr_Impl<ELFType<TargetEndianness, false>> {
566  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
567  Elf_Word ch_type;
568  Elf_Word ch_size;
569  Elf_Word ch_addralign;
570 };
571 
572 template <endianness TargetEndianness>
573 struct Elf_Chdr_Impl<ELFType<TargetEndianness, true>> {
574  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
575  Elf_Word ch_type;
576  Elf_Word ch_reserved;
577  Elf_Xword ch_size;
578  Elf_Xword ch_addralign;
579 };
580 
581 // MIPS .reginfo section
582 template <class ELFT>
584 
585 template <llvm::support::endianness TargetEndianness>
586 struct Elf_Mips_RegInfo<ELFType<TargetEndianness, false>> {
587  LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
588  Elf_Word ri_gprmask; // bit-mask of used general registers
589  Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
590  Elf_Addr ri_gp_value; // gp register value
591 };
592 
593 template <llvm::support::endianness TargetEndianness>
594 struct Elf_Mips_RegInfo<ELFType<TargetEndianness, true>> {
595  LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
596  Elf_Word ri_gprmask; // bit-mask of used general registers
597  Elf_Word ri_pad; // unused padding field
598  Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
599  Elf_Addr ri_gp_value; // gp register value
600 };
601 
602 // .MIPS.options section
603 template <class ELFT> struct Elf_Mips_Options {
605  uint8_t kind; // Determines interpretation of variable part of descriptor
606  uint8_t size; // Byte size of descriptor, including this header
607  Elf_Half section; // Section header index of section affected,
608  // or 0 for global options
609  Elf_Word info; // Kind-specific information
610 
611  Elf_Mips_RegInfo<ELFT> &getRegInfo() {
613  return *reinterpret_cast<Elf_Mips_RegInfo<ELFT> *>(
614  (uint8_t *)this + sizeof(Elf_Mips_Options));
615  }
617  return const_cast<Elf_Mips_Options *>(this)->getRegInfo();
618  }
619 };
620 
621 // .MIPS.abiflags section content
622 template <class ELFT> struct Elf_Mips_ABIFlags {
624  Elf_Half version; // Version of the structure
625  uint8_t isa_level; // ISA level: 1-5, 32, and 64
626  uint8_t isa_rev; // ISA revision (0 for MIPS I - MIPS V)
627  uint8_t gpr_size; // General purpose registers size
628  uint8_t cpr1_size; // Co-processor 1 registers size
629  uint8_t cpr2_size; // Co-processor 2 registers size
630  uint8_t fp_abi; // Floating-point ABI flag
631  Elf_Word isa_ext; // Processor-specific extension
632  Elf_Word ases; // ASEs flags
633  Elf_Word flags1; // General flags
634  Elf_Word flags2; // General flags
635 };
636 
637 } // end namespace object.
638 } // end namespace llvm.
639 
640 #endif
MachineLoop * L
unsigned char getType() const
Definition: ELFTypes.h:221
void setSymbolAndType(uint32_t s, uint32_t t, bool IsMips64EL)
Definition: ELFTypes.h:455
Elf_Shdr_Impl< ELFType< E, Is64 > > Shdr
Definition: ELFTypes.h:50
ArrayRef< Rel > RelRange
Definition: ELFTypes.h:67
void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL)
Definition: ELFTypes.h:403
void setVisibility(unsigned char v)
Definition: ELFTypes.h:235
Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section (.gnu.version_d).
Definition: ELFTypes.h:30
unsigned char getDataEncoding() const
Definition: ELFTypes.h:490
packed< int64_t > Sxword
Definition: ELFTypes.h:75
packed< uint > Off
Definition: ELFTypes.h:77
bool isAbsolute() const
Definition: ELFTypes.h:240
std::conditional< ELFT::Is64Bits, uint64_t, uint32_t >::type uintX_t
Definition: ELFTypes.h:367
ArrayRef< Elf_Word > values(unsigned DynamicSymCount) const
Definition: ELFTypes.h:557
void setBinding(unsigned char b)
Definition: ELFTypes.h:223
ArrayRef< Phdr > PhdrRange
Definition: ELFTypes.h:69
FunctionType * getType(LLVMContext &Context, ID id, ArrayRef< Type * > Tys=None)
Return the function type for an intrinsic.
Definition: Function.cpp:905
bool isOSSpecific() const
Definition: ELFTypes.h:248
Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters.
Definition: ELFTypes.h:27
static const endianness TargetEndianness
Definition: ELFTypes.h:45
ELFType< support::little, true > ELF64LE
Definition: ELFTypes.h:82
ELFType< support::big, false > ELF32BE
Definition: ELFTypes.h:81
uint64_t getValue() const
Definition: ELFTypes.h:222
lazy value info
support::detail::packed_endian_specific_integral< int32_t, target_endianness, 2 > Elf_Sword
Definition: ELFTypes.h:95
unsigned char getFileClass() const
Definition: ELFTypes.h:489
static F t[256]
support::detail::packed_endian_specific_integral< value_type, TargetEndianness, 2 > Elf_Addr
Definition: ELFTypes.h:121
ArrayRef< Shdr > ShdrRange
Definition: ELFTypes.h:65
Elf_Dyn_Impl< ELFType< E, Is64 > > Dyn
Definition: ELFTypes.h:52
static StringRef getName(Value *V)
Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed section (.gnu.version_r).
Definition: ELFTypes.h:32
Tagged union holding either a T or a Error.
Elf_Versym_Impl< ELFType< E, Is64 > > Versym
Definition: ELFTypes.h:60
Elf_Chdr_Impl< ELFType< E, Is64 > > Chdr
Definition: ELFTypes.h:63
ArrayRef< Sym > SymRange
Definition: ELFTypes.h:66
Elf_GnuHash_Impl< ELFType< E, Is64 > > GnuHash
Definition: ELFTypes.h:62
#define LLVM_ELF_IMPORT_TYPES(E, W)
Definition: ELFTypes.h:138
ArrayRef< Elf_Word > buckets() const
Definition: ELFTypes.h:552
Function Alias Analysis false
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:33
support::detail::packed_endian_specific_integral< uint16_t, target_endianness, 2 > Elf_Half
Definition: ELFTypes.h:91
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t size() const
size - Get the string size.
Definition: StringRef.h:135
bool isDefined() const
Definition: ELFTypes.h:244
Expected< const typename ELFT::Sym * > getSymbol(typename ELFT::SymRange Symbols, uint32_t Index)
Definition: Object/ELF.h:236
support::detail::packed_endian_specific_integral< value_type, TargetEndianness, 2 > Elf_Addr
Definition: ELFTypes.h:110
Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef section (...
Definition: ELFTypes.h:31
static GCRegistry::Add< CoreCLRGC > E("coreclr","CoreCLR-compatible GC")
bool isProcessorSpecific() const
Definition: ELFTypes.h:245
ArrayRef< Dyn > DynRange
Definition: ELFTypes.h:64
uintX_t getVal() const
Definition: ELFTypes.h:369
ELFType< support::little, false > ELF32LE
Definition: ELFTypes.h:80
ArrayRef< Rela > RelaRange
Definition: ELFTypes.h:68
Expected< StringRef > getName(StringRef StrTab) const
Definition: ELFTypes.h:265
void setType(unsigned char t)
Definition: ELFTypes.h:224
support::detail::packed_endian_specific_integral< value_type, TargetEndianness, 2 > Elf_Off
Definition: ELFTypes.h:123
Error errorCodeToError(std::error_code EC)
Helper for converting an std::error_code to a Error.
packed< uint32_t > Word
Definition: ELFTypes.h:72
unsigned char getVisibility() const
Access to the STV_xxx flag stored in the first two bits of st_other.
Definition: ELFTypes.h:234
Elf_Dyn_Base: This structure matches the form of entries in the dynamic table section (...
Definition: ELFTypes.h:337
uint32_t Offset
Elf_Rel_Impl< ELFType< E, Is64 >, true > Rela
Definition: ELFTypes.h:55
packed< uint16_t > Half
Definition: ELFTypes.h:71
ELFType< support::big, true > ELF64BE
Definition: ELFTypes.h:83
bool isUndefined() const
Definition: ELFTypes.h:256
packed< uint64_t > Xword
Definition: ELFTypes.h:74
Elf_Vernaux_Impl< ELFType< E, Is64 > > Vernaux
Definition: ELFTypes.h:59
Elf_Rel_Impl< ELFType< E, Is64 >, false > Rel
Definition: ELFTypes.h:54
support::detail::packed_endian_specific_integral< uint32_t, target_endianness, 2 > Elf_Word
Definition: ELFTypes.h:93
static const char ElfMagic[]
Definition: Support/ELF.h:46
bool isReserved() const
Definition: ELFTypes.h:251
Elf_Ehdr_Impl< ELFType< E, Is64 > > Ehdr
Definition: ELFTypes.h:49
Elf_Hash_Impl< ELFType< E, Is64 > > Hash
Definition: ELFTypes.h:61
std::conditional< Is64, uint64_t, uint32_t >::type uint
Definition: ELFTypes.h:48
packed< int32_t > Sword
Definition: ELFTypes.h:73
void setBindingAndType(unsigned char b, unsigned char t)
Definition: ELFTypes.h:225
bool isCommon() const
Definition: ELFTypes.h:241
Elf_Phdr_Impl< ELFType< E, Is64 > > Phdr
Definition: ELFTypes.h:53
support::detail::packed_endian_specific_integral< int64_t, target_endianness, 2 > Elf_Sxword
Definition: ELFTypes.h:99
Elf_Verdef_Impl< ELFType< E, Is64 > > Verdef
Definition: ELFTypes.h:56
std::conditional< ELFT::Is64Bits, int64_t, int32_t >::type intX_t
Definition: ELFTypes.h:365
Basic Alias true
Elf_Versym: This is the structure of entries in the SHT_GNU_versym section (.gnu.version).
Definition: ELFTypes.h:34
ArrayRef< Elf_Word > chains() const
Definition: ELFTypes.h:532
intX_t getTag() const
Definition: ELFTypes.h:368
unsigned getEntityCount() const
Get the number of entities this section contains if it has any.
Definition: ELFTypes.h:180
uintX_t getPtr() const
Definition: ELFTypes.h:370
Provides ErrorOr<T> smart pointer.
packed< uint > Addr
Definition: ELFTypes.h:76
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
support::detail::packed_endian_specific_integral< value_type, TargetEndianness, 2 > Elf_Off
Definition: ELFTypes.h:112
aarch64 promote const
static const bool Is64Bits
Definition: ELFTypes.h:46
const Elf_Mips_RegInfo< ELFT > & getRegInfo() const
Definition: ELFTypes.h:616
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE const char * data() const
data - Get a pointer to the start of the string (which may not be null terminated).
Definition: StringRef.h:125
#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
Definition: ELFTypes.h:128
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:47
Elf_Verneed_Impl< ELFType< E, Is64 > > Verneed
Definition: ELFTypes.h:58
Elf_Verdaux_Impl< ELFType< E, Is64 > > Verdaux
Definition: ELFTypes.h:57
bool isExternal() const
Definition: ELFTypes.h:257
Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed section (.gnu.version_r).
Definition: ELFTypes.h:33
unsigned char getBinding() const
Definition: ELFTypes.h:220
support::detail::packed_endian_specific_integral< uint64_t, target_endianness, 2 > Elf_Xword
Definition: ELFTypes.h:97
Elf_Sym_Impl< ELFType< E, Is64 > > Sym
Definition: ELFTypes.h:51