llvm.org GIT mirror llvm / 42d86b3 lib / Support / Dwarf.cpp
42d86b3

Tree @42d86b3 (Download .tar.gz)

Dwarf.cpp @42d86b3raw · history · blame

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
//===-- llvm/Support/Dwarf.cpp - Dwarf Framework ----------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains support for generic dwarf information.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/Dwarf.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"

using namespace llvm;
using namespace dwarf;

StringRef llvm::dwarf::TagString(unsigned Tag) {
  switch (Tag) {
  default:
    return StringRef();
#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR)                               \
  case DW_TAG_##NAME:                                                          \
    return "DW_TAG_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::getTag(StringRef TagString) {
  return StringSwitch<unsigned>(TagString)
#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR)                               \
      .Case("DW_TAG_" #NAME, DW_TAG_##NAME)
#include "llvm/Support/Dwarf.def"
      .Default(DW_TAG_invalid);
}

unsigned llvm::dwarf::TagVersion(dwarf::Tag Tag) {
  switch (Tag) {
  default:
    return 0;
#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR)                               \
  case DW_TAG_##NAME:                                                          \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::TagVendor(dwarf::Tag Tag) {
  switch (Tag) {
  default:
    return 0;
#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR)                               \
  case DW_TAG_##NAME:                                                          \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::ChildrenString(unsigned Children) {
  switch (Children) {
  case DW_CHILDREN_no:                   return "DW_CHILDREN_no";
  case DW_CHILDREN_yes:                  return "DW_CHILDREN_yes";
  }
  return StringRef();
}

StringRef llvm::dwarf::AttributeString(unsigned Attribute) {
  switch (Attribute) {
  default:
    return StringRef();
#define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR)                                \
  case DW_AT_##NAME:                                                           \
    return "DW_AT_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::AttributeVersion(dwarf::Attribute Attribute) {
  switch (Attribute) {
  default:
    return 0;
#define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR)                                \
  case DW_AT_##NAME:                                                           \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::AttributeVendor(dwarf::Attribute Attribute) {
  switch (Attribute) {
  default:
    return 0;
#define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR)                                \
  case DW_AT_##NAME:                                                           \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::FormEncodingString(unsigned Encoding) {
  switch (Encoding) {
  default:
    return StringRef();
#define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR)                              \
  case DW_FORM_##NAME:                                                         \
    return "DW_FORM_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::FormVersion(dwarf::Form Form) {
  switch (Form) {
  default:
    return 0;
#define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR)                              \
  case DW_FORM_##NAME:                                                         \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::FormVendor(dwarf::Form Form) {
  switch (Form) {
  default:
    return 0;
#define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR)                              \
  case DW_FORM_##NAME:                                                         \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::OperationEncodingString(unsigned Encoding) {
  switch (Encoding) {
  default:
    return StringRef();
#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR)                                \
  case DW_OP_##NAME:                                                           \
    return "DW_OP_" #NAME;
#include "llvm/Support/Dwarf.def"
  case DW_OP_LLVM_fragment:
    return "DW_OP_LLVM_fragment";
  }
}

unsigned llvm::dwarf::getOperationEncoding(StringRef OperationEncodingString) {
  return StringSwitch<unsigned>(OperationEncodingString)
#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR)                                \
      .Case("DW_OP_" #NAME, DW_OP_##NAME)
#include "llvm/Support/Dwarf.def"
      .Case("DW_OP_LLVM_fragment", DW_OP_LLVM_fragment)
      .Default(0);
}

unsigned llvm::dwarf::OperationVersion(dwarf::LocationAtom Op) {
  switch (Op) {
  default:
    return 0;
#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR)                                \
  case DW_OP_##NAME:                                                           \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::OperationVendor(dwarf::LocationAtom Op) {
  switch (Op) {
  default:
    return 0;
#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR)                                \
  case DW_OP_##NAME:                                                           \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::AttributeEncodingString(unsigned Encoding) {
  switch (Encoding) {
  default:
    return StringRef();
#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR)                               \
  case DW_ATE_##NAME:                                                          \
    return "DW_ATE_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::getAttributeEncoding(StringRef EncodingString) {
  return StringSwitch<unsigned>(EncodingString)
#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR)                               \
      .Case("DW_ATE_" #NAME, DW_ATE_##NAME)
#include "llvm/Support/Dwarf.def"
      .Default(0);
}

unsigned llvm::dwarf::AttributeEncodingVersion(dwarf::TypeKind ATE) {
  switch (ATE) {
  default:
    return 0;
#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR)                               \
  case DW_ATE_##NAME:                                                          \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::AttributeEncodingVendor(dwarf::TypeKind ATE) {
  switch (ATE) {
  default:
    return 0;
#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR)                               \
  case DW_ATE_##NAME:                                                          \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::DecimalSignString(unsigned Sign) {
  switch (Sign) {
  case DW_DS_unsigned:                   return "DW_DS_unsigned";
  case DW_DS_leading_overpunch:          return "DW_DS_leading_overpunch";
  case DW_DS_trailing_overpunch:         return "DW_DS_trailing_overpunch";
  case DW_DS_leading_separate:           return "DW_DS_leading_separate";
  case DW_DS_trailing_separate:          return "DW_DS_trailing_separate";
  }
  return StringRef();
}

StringRef llvm::dwarf::EndianityString(unsigned Endian) {
  switch (Endian) {
  case DW_END_default:                   return "DW_END_default";
  case DW_END_big:                       return "DW_END_big";
  case DW_END_little:                    return "DW_END_little";
  case DW_END_lo_user:                   return "DW_END_lo_user";
  case DW_END_hi_user:                   return "DW_END_hi_user";
  }
  return StringRef();
}

StringRef llvm::dwarf::AccessibilityString(unsigned Access) {
  switch (Access) {
  // Accessibility codes
  case DW_ACCESS_public:                 return "DW_ACCESS_public";
  case DW_ACCESS_protected:              return "DW_ACCESS_protected";
  case DW_ACCESS_private:                return "DW_ACCESS_private";
  }
  return StringRef();
}

StringRef llvm::dwarf::VisibilityString(unsigned Visibility) {
  switch (Visibility) {
  case DW_VIS_local:                     return "DW_VIS_local";
  case DW_VIS_exported:                  return "DW_VIS_exported";
  case DW_VIS_qualified:                 return "DW_VIS_qualified";
  }
  return StringRef();
}

StringRef llvm::dwarf::VirtualityString(unsigned Virtuality) {
  switch (Virtuality) {
  default:
    return StringRef();
#define HANDLE_DW_VIRTUALITY(ID, NAME)                                         \
  case DW_VIRTUALITY_##NAME:                                                   \
    return "DW_VIRTUALITY_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::getVirtuality(StringRef VirtualityString) {
  return StringSwitch<unsigned>(VirtualityString)
#define HANDLE_DW_VIRTUALITY(ID, NAME)                                         \
  .Case("DW_VIRTUALITY_" #NAME, DW_VIRTUALITY_##NAME)
#include "llvm/Support/Dwarf.def"
      .Default(DW_VIRTUALITY_invalid);
}

StringRef llvm::dwarf::LanguageString(unsigned Language) {
  switch (Language) {
  default:
    return StringRef();
#define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR)                              \
  case DW_LANG_##NAME:                                                         \
    return "DW_LANG_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::getLanguage(StringRef LanguageString) {
  return StringSwitch<unsigned>(LanguageString)
#define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR)                              \
  .Case("DW_LANG_" #NAME, DW_LANG_##NAME)
#include "llvm/Support/Dwarf.def"
      .Default(0);
}

unsigned llvm::dwarf::LanguageVersion(dwarf::SourceLanguage Lang) {
  switch (Lang) {
  default:
    return 0;
#define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR)                              \
  case DW_LANG_##NAME:                                                         \
    return VERSION;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::LanguageVendor(dwarf::SourceLanguage Lang) {
  switch (Lang) {
  default:
    return 0;
#define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR)                              \
  case DW_LANG_##NAME:                                                         \
    return DWARF_VENDOR_##VENDOR;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::CaseString(unsigned Case) {
  switch (Case) {
  case DW_ID_case_sensitive:             return "DW_ID_case_sensitive";
  case DW_ID_up_case:                    return "DW_ID_up_case";
  case DW_ID_down_case:                  return "DW_ID_down_case";
  case DW_ID_case_insensitive:           return "DW_ID_case_insensitive";
  }
  return StringRef();
}

StringRef llvm::dwarf::ConventionString(unsigned CC) {
  switch (CC) {
  default:
    return StringRef();
#define HANDLE_DW_CC(ID, NAME)                                               \
  case DW_CC_##NAME:                                                         \
    return "DW_CC_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

unsigned llvm::dwarf::getCallingConvention(StringRef CCString) {
  return StringSwitch<unsigned>(CCString)
#define HANDLE_DW_CC(ID, NAME) .Case("DW_CC_" #NAME, DW_CC_##NAME)
#include "llvm/Support/Dwarf.def"
      .Default(0);
}

StringRef llvm::dwarf::InlineCodeString(unsigned Code) {
  switch (Code) {
  case DW_INL_not_inlined:               return "DW_INL_not_inlined";
  case DW_INL_inlined:                   return "DW_INL_inlined";
  case DW_INL_declared_not_inlined:      return "DW_INL_declared_not_inlined";
  case DW_INL_declared_inlined:          return "DW_INL_declared_inlined";
  }
  return StringRef();
}

StringRef llvm::dwarf::ArrayOrderString(unsigned Order) {
  switch (Order) {
  case DW_ORD_row_major:                 return "DW_ORD_row_major";
  case DW_ORD_col_major:                 return "DW_ORD_col_major";
  }
  return StringRef();
}

StringRef llvm::dwarf::DiscriminantString(unsigned Discriminant) {
  switch (Discriminant) {
  case DW_DSC_label:                     return "DW_DSC_label";
  case DW_DSC_range:                     return "DW_DSC_range";
  }
  return StringRef();
}

StringRef llvm::dwarf::LNStandardString(unsigned Standard) {
  switch (Standard) {
  default:
    return StringRef();
#define HANDLE_DW_LNS(ID, NAME)                                               \
  case DW_LNS_##NAME:                                                         \
    return "DW_LNS_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::LNExtendedString(unsigned Encoding) {
  switch (Encoding) {
  default:
    return StringRef();
#define HANDLE_DW_LNE(ID, NAME)                                               \
  case DW_LNE_##NAME:                                                         \
    return "DW_LNE_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::MacinfoString(unsigned Encoding) {
  switch (Encoding) {
  // Macinfo Type Encodings
  case DW_MACINFO_define:                return "DW_MACINFO_define";
  case DW_MACINFO_undef:                 return "DW_MACINFO_undef";
  case DW_MACINFO_start_file:            return "DW_MACINFO_start_file";
  case DW_MACINFO_end_file:              return "DW_MACINFO_end_file";
  case DW_MACINFO_vendor_ext:            return "DW_MACINFO_vendor_ext";
  case DW_MACINFO_invalid:               return "DW_MACINFO_invalid";
  }
  return StringRef();
}

unsigned llvm::dwarf::getMacinfo(StringRef MacinfoString) {
  return StringSwitch<unsigned>(MacinfoString)
      .Case("DW_MACINFO_define", DW_MACINFO_define)
      .Case("DW_MACINFO_undef", DW_MACINFO_undef)
      .Case("DW_MACINFO_start_file", DW_MACINFO_start_file)
      .Case("DW_MACINFO_end_file", DW_MACINFO_end_file)
      .Case("DW_MACINFO_vendor_ext", DW_MACINFO_vendor_ext)
      .Default(DW_MACINFO_invalid);
}

StringRef llvm::dwarf::CallFrameString(unsigned Encoding) {
  switch (Encoding) {
  default:
    return StringRef();
#define HANDLE_DW_CFA(ID, NAME)                                               \
  case DW_CFA_##NAME:                                                         \
    return "DW_CFA_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::ApplePropertyString(unsigned Prop) {
  switch (Prop) {
  default:
    return StringRef();
#define HANDLE_DW_APPLE_PROPERTY(ID, NAME)                                               \
  case DW_APPLE_PROPERTY_##NAME:                                                         \
    return "DW_APPLE_PROPERTY_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::UnitTypeString(unsigned UT) {
  switch (UT) {
  default:
    return StringRef();
#define HANDLE_DW_UT(ID, NAME)                                                 \
  case DW_UT_##NAME:                                                           \
    return "DW_UT_" #NAME;
#include "llvm/Support/Dwarf.def"
  }
}

StringRef llvm::dwarf::AtomTypeString(unsigned AT) {
  switch (AT) {
  case dwarf::DW_ATOM_null:
    return "DW_ATOM_null";
  case dwarf::DW_ATOM_die_offset:
    return "DW_ATOM_die_offset";
  case DW_ATOM_cu_offset:
    return "DW_ATOM_cu_offset";
  case DW_ATOM_die_tag:
    return "DW_ATOM_die_tag";
  case DW_ATOM_type_flags:
    return "DW_ATOM_type_flags";
  }
  return StringRef();
}

StringRef llvm::dwarf::GDBIndexEntryKindString(GDBIndexEntryKind Kind) {
  switch (Kind) {
  case GIEK_NONE:
    return "NONE";
  case GIEK_TYPE:
    return "TYPE";
  case GIEK_VARIABLE:
    return "VARIABLE";
  case GIEK_FUNCTION:
    return "FUNCTION";
  case GIEK_OTHER:
    return "OTHER";
  case GIEK_UNUSED5:
    return "UNUSED5";
  case GIEK_UNUSED6:
    return "UNUSED6";
  case GIEK_UNUSED7:
    return "UNUSED7";
  }
  llvm_unreachable("Unknown GDBIndexEntryKind value");
}

StringRef
llvm::dwarf::GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage) {
  switch (Linkage) {
  case GIEL_EXTERNAL:
    return "EXTERNAL";
  case GIEL_STATIC:
    return "STATIC";
  }
  llvm_unreachable("Unknown GDBIndexEntryLinkage value");
}

StringRef llvm::dwarf::AttributeValueString(uint16_t Attr, unsigned Val) {
  switch (Attr) {
  case DW_AT_accessibility:
    return AccessibilityString(Val);
  case DW_AT_virtuality:
    return VirtualityString(Val);
  case DW_AT_language:
    return LanguageString(Val);
  case DW_AT_encoding:
    return AttributeEncodingString(Val);
  case DW_AT_decimal_sign:
    return DecimalSignString(Val);
  case DW_AT_endianity:
    return EndianityString(Val);
  case DW_AT_visibility:
    return VisibilityString(Val);
  case DW_AT_identifier_case:
    return CaseString(Val);
  case DW_AT_calling_convention:
    return ConventionString(Val);
  case DW_AT_inline:
    return InlineCodeString(Val);
  case DW_AT_ordering:
    return ArrayOrderString(Val);
  case DW_AT_discr_value:
    return DiscriminantString(Val);
  }

  return StringRef();
}

bool llvm::dwarf::isValidFormForVersion(Form F, unsigned Version,
                                        bool ExtensionsOk) {
  if (FormVendor(F) == DWARF_VENDOR_DWARF) {
    unsigned FV = FormVersion(F);
    return FV > 0 && FV <= Version;
  }
  return ExtensionsOk;
}