Coverage Report

Created: 2017-10-03 07:32

/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/CodeGen/AsmPrinter/DIE.cpp
Line
Count
Source (jump to first uncovered line)
1
//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
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
// Data structures for DWARF info entries.
11
//
12
//===----------------------------------------------------------------------===//
13
14
#include "llvm/CodeGen/DIE.h"
15
#include "DwarfCompileUnit.h"
16
#include "DwarfDebug.h"
17
#include "DwarfUnit.h"
18
#include "llvm/ADT/Twine.h"
19
#include "llvm/CodeGen/AsmPrinter.h"
20
#include "llvm/IR/DataLayout.h"
21
#include "llvm/MC/MCAsmInfo.h"
22
#include "llvm/MC/MCContext.h"
23
#include "llvm/MC/MCStreamer.h"
24
#include "llvm/MC/MCSymbol.h"
25
#include "llvm/Support/Debug.h"
26
#include "llvm/Support/ErrorHandling.h"
27
#include "llvm/Support/Format.h"
28
#include "llvm/Support/FormattedStream.h"
29
#include "llvm/Support/LEB128.h"
30
#include "llvm/Support/MD5.h"
31
#include "llvm/Support/raw_ostream.h"
32
using namespace llvm;
33
34
#define DEBUG_TYPE "dwarfdebug"
35
36
//===----------------------------------------------------------------------===//
37
// DIEAbbrevData Implementation
38
//===----------------------------------------------------------------------===//
39
40
/// Profile - Used to gather unique data for the abbreviation folding set.
41
///
42
443k
void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
43
443k
  // Explicitly cast to an integer type for which FoldingSetNodeID has
44
443k
  // overloads.  Otherwise MSVC 2010 thinks this call is ambiguous.
45
443k
  ID.AddInteger(unsigned(Attribute));
46
443k
  ID.AddInteger(unsigned(Form));
47
443k
  if (Form == dwarf::DW_FORM_implicit_const)
48
6
    ID.AddInteger(Value);
49
443k
}
50
51
//===----------------------------------------------------------------------===//
52
// DIEAbbrev Implementation
53
//===----------------------------------------------------------------------===//
54
55
/// Profile - Used to gather unique data for the abbreviation folding set.
56
///
57
117k
void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
58
117k
  ID.AddInteger(unsigned(Tag));
59
117k
  ID.AddInteger(unsigned(Children));
60
117k
61
117k
  // For each attribute description.
62
560k
  for (unsigned i = 0, N = Data.size(); 
i < N560k
;
++i443k
)
63
443k
    Data[i].Profile(ID);
64
117k
}
65
66
/// Emit - Print the abbreviation using the specified asm printer.
67
///
68
10.0k
void DIEAbbrev::Emit(const AsmPrinter *AP) const {
69
10.0k
  // Emit its Dwarf tag type.
70
10.0k
  AP->EmitULEB128(Tag, dwarf::TagString(Tag).data());
71
10.0k
72
10.0k
  // Emit whether it has children DIEs.
73
10.0k
  AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children).data());
74
10.0k
75
10.0k
  // For each attribute description.
76
54.7k
  for (unsigned i = 0, N = Data.size(); 
i < N54.7k
;
++i44.7k
) {
77
44.7k
    const DIEAbbrevData &AttrData = Data[i];
78
44.7k
79
44.7k
    // Emit attribute type.
80
44.7k
    AP->EmitULEB128(AttrData.getAttribute(),
81
44.7k
                    dwarf::AttributeString(AttrData.getAttribute()).data());
82
44.7k
83
44.7k
    // Emit form type.
84
#ifndef NDEBUG
85
    // Could be an assertion, but this way we can see the failing form code
86
    // easily, which helps track down where it came from.
87
    if (!dwarf::isValidFormForVersion(AttrData.getForm(),
88
                                      AP->getDwarfVersion())) {
89
      DEBUG(dbgs() << "Invalid form " << format("0x%x", AttrData.getForm())
90
                   << " for DWARF version " << AP->getDwarfVersion() << "\n");
91
      llvm_unreachable("Invalid form for specified DWARF version");
92
    }
93
#endif
94
    AP->EmitULEB128(AttrData.getForm(),
95
44.7k
                    dwarf::FormEncodingString(AttrData.getForm()).data());
96
44.7k
97
44.7k
    // Emit value for DW_FORM_implicit_const.
98
44.7k
    if (AttrData.getForm() == dwarf::DW_FORM_implicit_const)
99
4
      AP->EmitSLEB128(AttrData.getValue());
100
44.7k
  }
101
10.0k
102
10.0k
  // Mark end of abbreviation.
103
10.0k
  AP->EmitULEB128(0, "EOM(1)");
104
10.0k
  AP->EmitULEB128(0, "EOM(2)");
105
10.0k
}
106
107
LLVM_DUMP_METHOD
108
0
void DIEAbbrev::print(raw_ostream &O) const {
109
0
  O << "Abbreviation @"
110
0
    << format("0x%lx", (long)(intptr_t)this)
111
0
    << "  "
112
0
    << dwarf::TagString(Tag)
113
0
    << " "
114
0
    << dwarf::ChildrenString(Children)
115
0
    << '\n';
116
0
117
0
  for (unsigned i = 0, N = Data.size(); 
i < N0
;
++i0
) {
118
0
    O << "  "
119
0
      << dwarf::AttributeString(Data[i].getAttribute())
120
0
      << "  "
121
0
      << dwarf::FormEncodingString(Data[i].getForm());
122
0
123
0
    if (Data[i].getForm() == dwarf::DW_FORM_implicit_const)
124
0
      O << " " << Data[i].getValue();
125
0
126
0
    O << '\n';
127
0
  }
128
0
}
129
130
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
131
LLVM_DUMP_METHOD void DIEAbbrev::dump() const {
132
  print(dbgs());
133
}
134
#endif
135
136
//===----------------------------------------------------------------------===//
137
// DIEAbbrevSet Implementation
138
//===----------------------------------------------------------------------===//
139
140
65.9k
DIEAbbrevSet::~DIEAbbrevSet() {
141
65.9k
  for (DIEAbbrev *Abbrev : Abbreviations)
142
9.52k
    Abbrev->~DIEAbbrev();
143
65.9k
}
144
145
61.6k
DIEAbbrev &DIEAbbrevSet::uniqueAbbreviation(DIE &Die) {
146
61.6k
147
61.6k
  FoldingSetNodeID ID;
148
61.6k
  DIEAbbrev Abbrev = Die.generateAbbrev();
149
61.6k
  Abbrev.Profile(ID);
150
61.6k
151
61.6k
  void *InsertPos;
152
61.6k
  if (DIEAbbrev *Existing =
153
52.1k
          AbbreviationsSet.FindNodeOrInsertPos(ID, InsertPos)) {
154
52.1k
    Die.setAbbrevNumber(Existing->getNumber());
155
52.1k
    return *Existing;
156
52.1k
  }
157
9.52k
158
9.52k
  // Move the abbreviation to the heap and assign a number.
159
9.52k
  DIEAbbrev *New = new (Alloc) DIEAbbrev(std::move(Abbrev));
160
9.52k
  Abbreviations.push_back(New);
161
9.52k
  New->setNumber(Abbreviations.size());
162
9.52k
  Die.setAbbrevNumber(Abbreviations.size());
163
9.52k
164
9.52k
  // Store it for lookup.
165
9.52k
  AbbreviationsSet.InsertNode(New, InsertPos);
166
9.52k
  return *New;
167
9.52k
}
168
169
1.52k
void DIEAbbrevSet::Emit(const AsmPrinter *AP, MCSection *Section) const {
170
1.52k
  if (
!Abbreviations.empty()1.52k
) {
171
1.19k
    // Start the debug abbrev section.
172
1.19k
    AP->OutStreamer->SwitchSection(Section);
173
1.19k
    AP->emitDwarfAbbrevs(Abbreviations);
174
1.19k
  }
175
1.52k
}
176
177
//===----------------------------------------------------------------------===//
178
// DIE Implementation
179
//===----------------------------------------------------------------------===//
180
181
204k
DIE *DIE::getParent() const {
182
204k
  return Owner.dyn_cast<DIE*>();
183
204k
}
184
185
62.5k
DIEAbbrev DIE::generateAbbrev() const {
186
62.5k
  DIEAbbrev Abbrev(Tag, hasChildren());
187
62.5k
  for (const DIEValue &V : values())
188
239k
    
if (239k
V.getForm() == dwarf::DW_FORM_implicit_const239k
)
189
5
      Abbrev.AddImplicitConstAttribute(V.getAttribute(),
190
5
                                       V.getDIEInteger().getValue());
191
239k
    else
192
239k
      Abbrev.AddAttribute(V.getAttribute(), V.getForm());
193
62.5k
  return Abbrev;
194
62.5k
}
195
196
44.4k
unsigned DIE::getDebugSectionOffset() const {
197
44.4k
  const DIEUnit *Unit = getUnit();
198
44.4k
  assert(Unit && "DIE must be owned by a DIEUnit to get its absolute offset");
199
44.4k
  return Unit->getDebugSectionOffset() + getOffset();
200
44.4k
}
201
202
159k
const DIE *DIE::getUnitDie() const {
203
159k
  const DIE *p = this;
204
364k
  while (
p364k
) {
205
330k
    if (p->getTag() == dwarf::DW_TAG_compile_unit ||
206
204k
        p->getTag() == dwarf::DW_TAG_type_unit)
207
125k
      return p;
208
204k
    p = p->getParent();
209
204k
  }
210
34.2k
  return nullptr;
211
159k
}
212
213
158k
const DIEUnit *DIE::getUnit() const {
214
158k
  const DIE *UnitDie = getUnitDie();
215
158k
  if (UnitDie)
216
124k
    return UnitDie->Owner.dyn_cast<DIEUnit*>();
217
34.2k
  return nullptr;
218
34.2k
}
219
220
100
DIEValue DIE::findAttribute(dwarf::Attribute Attribute) const {
221
100
  // Iterate through all the attributes until we find the one we're
222
100
  // looking for, if we can't find it return NULL.
223
100
  for (const auto &V : values())
224
449
    
if (449
V.getAttribute() == Attribute449
)
225
28
      return V;
226
72
  return DIEValue();
227
72
}
228
229
LLVM_DUMP_METHOD
230
static void printValues(raw_ostream &O, const DIEValueList &Values,
231
0
                        StringRef Type, unsigned Size, unsigned IndentCount) {
232
0
  O << Type << ": Size: " << Size << "\n";
233
0
234
0
  unsigned I = 0;
235
0
  const std::string Indent(IndentCount, ' ');
236
0
  for (const auto &V : Values.values()) {
237
0
    O << Indent;
238
0
    O << "Blk[" << I++ << "]";
239
0
    O << "  " << dwarf::FormEncodingString(V.getForm()) << " ";
240
0
    V.print(O);
241
0
    O << "\n";
242
0
  }
243
0
}
244
245
LLVM_DUMP_METHOD
246
0
void DIE::print(raw_ostream &O, unsigned IndentCount) const {
247
0
  const std::string Indent(IndentCount, ' ');
248
0
  O << Indent << "Die: " << format("0x%lx", (long)(intptr_t) this)
249
0
    << ", Offset: " << Offset << ", Size: " << Size << "\n";
250
0
251
0
  O << Indent << dwarf::TagString(getTag()) << " "
252
0
    << dwarf::ChildrenString(hasChildren()) << "\n";
253
0
254
0
  IndentCount += 2;
255
0
  for (const auto &V : values()) {
256
0
    O << Indent;
257
0
    O << dwarf::AttributeString(V.getAttribute());
258
0
    O << "  " << dwarf::FormEncodingString(V.getForm()) << " ";
259
0
    V.print(O);
260
0
    O << "\n";
261
0
  }
262
0
  IndentCount -= 2;
263
0
264
0
  for (const auto &Child : children())
265
0
    Child.print(O, IndentCount + 4);
266
0
267
0
  O << "\n";
268
0
}
269
270
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
271
LLVM_DUMP_METHOD void DIE::dump() const {
272
  print(dbgs());
273
}
274
#endif
275
276
unsigned DIE::computeOffsetsAndAbbrevs(const AsmPrinter *AP,
277
                                       DIEAbbrevSet &AbbrevSet,
278
61.6k
                                       unsigned CUOffset) {
279
61.6k
  // Unique the abbreviation and fill in the abbreviation number so this DIE
280
61.6k
  // can be emitted.
281
61.6k
  const DIEAbbrev &Abbrev = AbbrevSet.uniqueAbbreviation(*this);
282
61.6k
283
61.6k
  // Set compile/type unit relative offset of this DIE.
284
61.6k
  setOffset(CUOffset);
285
61.6k
286
61.6k
  // Add the byte size of the abbreviation code.
287
61.6k
  CUOffset += getULEB128Size(getAbbrevNumber());
288
61.6k
289
61.6k
  // Add the byte size of all the DIE attribute values.
290
61.6k
  for (const auto &V : values())
291
234k
    CUOffset += V.SizeOf(AP);
292
61.6k
293
61.6k
  // Let the children compute their offsets and abbreviation numbers.
294
61.6k
  if (
hasChildren()61.6k
) {
295
22.5k
    (void)Abbrev;
296
22.5k
    assert(Abbrev.hasChildren() && "Children flag not set");
297
22.5k
298
22.5k
    for (auto &Child : children())
299
60.3k
      CUOffset = Child.computeOffsetsAndAbbrevs(AP, AbbrevSet, CUOffset);
300
22.5k
301
22.5k
    // Each child chain is terminated with a zero byte, adjust the offset.
302
22.5k
    CUOffset += sizeof(int8_t);
303
22.5k
  }
304
61.6k
305
61.6k
  // Compute the byte size of this DIE and all of its children correctly. This
306
61.6k
  // is needed so that top level DIE can help the compile unit set its length
307
61.6k
  // correctly.
308
61.6k
  setSize(CUOffset - getOffset());
309
61.6k
  return CUOffset;
310
61.6k
}
311
312
//===----------------------------------------------------------------------===//
313
// DIEUnit Implementation
314
//===----------------------------------------------------------------------===//
315
DIEUnit::DIEUnit(uint16_t V, uint8_t A, dwarf::Tag UnitTag)
316
    : Die(UnitTag), Section(nullptr), Offset(0), Length(0), Version(V),
317
      AddrSize(A)
318
1.40k
{
319
1.40k
  Die.Owner = this;
320
1.40k
  assert((UnitTag == dwarf::DW_TAG_compile_unit ||
321
1.40k
          UnitTag == dwarf::DW_TAG_type_unit ||
322
1.40k
          UnitTag == dwarf::DW_TAG_partial_unit) && "expected a unit TAG");
323
1.40k
}
324
325
243k
void DIEValue::EmitValue(const AsmPrinter *AP) const {
326
243k
  switch (Ty) {
327
0
  case isNone:
328
0
    llvm_unreachable("Expected valid DIEValue");
329
243k
#define HANDLE_DIEVALUE(T)                                                     \
330
243k
  case is##T:                                                                  \
331
243k
    getDIE##T().EmitValue(AP, Form);                                           \
332
243k
    break;
333
91.4k
#include "llvm/CodeGen/DIEValue.def"
334
243k
  }
335
243k
}
336
337
239k
unsigned DIEValue::SizeOf(const AsmPrinter *AP) const {
338
239k
  switch (Ty) {
339
0
  case isNone:
340
0
    llvm_unreachable("Expected valid DIEValue");
341
239k
#define HANDLE_DIEVALUE(T)                                                     \
342
239k
  case is##T:                                                                  \
343
239k
    return getDIE##T().SizeOf(AP, Form);
344
87.8k
#include "llvm/CodeGen/DIEValue.def"
345
239k
  }
346
0
  
llvm_unreachable0
("Unknown DIE kind");
347
0
}
348
349
LLVM_DUMP_METHOD
350
0
void DIEValue::print(raw_ostream &O) const {
351
0
  switch (Ty) {
352
0
  case isNone:
353
0
    llvm_unreachable("Expected valid DIEValue");
354
0
#define HANDLE_DIEVALUE(T)                                                     \
355
0
  case is##T:                                                                  \
356
0
    getDIE##T().print(O);                                                      \
357
0
    break;
358
0
#include "llvm/CodeGen/DIEValue.def"
359
0
  }
360
0
}
361
362
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
363
LLVM_DUMP_METHOD void DIEValue::dump() const {
364
  print(dbgs());
365
}
366
#endif
367
368
//===----------------------------------------------------------------------===//
369
// DIEInteger Implementation
370
//===----------------------------------------------------------------------===//
371
372
/// EmitValue - Emit integer of appropriate size.
373
///
374
115k
void DIEInteger::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
375
115k
  switch (Form) {
376
2.64k
  case dwarf::DW_FORM_implicit_const:
377
2.64k
  case dwarf::DW_FORM_flag_present:
378
2.64k
    // Emit something to keep the lines and comments in sync.
379
2.64k
    // FIXME: Is there a better way to do this?
380
2.64k
    Asm->OutStreamer->AddBlankLine();
381
2.64k
    return;
382
111k
  case dwarf::DW_FORM_flag:
383
111k
  case dwarf::DW_FORM_ref1:
384
111k
  case dwarf::DW_FORM_data1:
385
111k
  case dwarf::DW_FORM_strx1:
386
111k
  case dwarf::DW_FORM_addrx1:
387
111k
  case dwarf::DW_FORM_ref2:
388
111k
  case dwarf::DW_FORM_data2:
389
111k
  case dwarf::DW_FORM_strx2:
390
111k
  case dwarf::DW_FORM_addrx2:
391
111k
  case dwarf::DW_FORM_strp:
392
111k
  case dwarf::DW_FORM_ref4:
393
111k
  case dwarf::DW_FORM_data4:
394
111k
  case dwarf::DW_FORM_ref_sup4:
395
111k
  case dwarf::DW_FORM_strx4:
396
111k
  case dwarf::DW_FORM_addrx4:
397
111k
  case dwarf::DW_FORM_ref8:
398
111k
  case dwarf::DW_FORM_ref_sig8:
399
111k
  case dwarf::DW_FORM_data8:
400
111k
  case dwarf::DW_FORM_ref_sup8:
401
111k
  case dwarf::DW_FORM_GNU_ref_alt:
402
111k
  case dwarf::DW_FORM_GNU_strp_alt:
403
111k
  case dwarf::DW_FORM_line_strp:
404
111k
  case dwarf::DW_FORM_sec_offset:
405
111k
  case dwarf::DW_FORM_strp_sup:
406
111k
  case dwarf::DW_FORM_addr:
407
111k
  case dwarf::DW_FORM_ref_addr:
408
111k
    Asm->OutStreamer->EmitIntValue(Integer, SizeOf(Asm, Form));
409
111k
    return;
410
1.03k
  case dwarf::DW_FORM_GNU_str_index:
411
1.03k
  case dwarf::DW_FORM_GNU_addr_index:
412
1.03k
  case dwarf::DW_FORM_ref_udata:
413
1.03k
  case dwarf::DW_FORM_udata:
414
1.03k
    Asm->EmitULEB128(Integer);
415
1.03k
    return;
416
662
  case dwarf::DW_FORM_sdata:
417
662
    Asm->EmitSLEB128(Integer);
418
662
    return;
419
0
  
default: 0
llvm_unreachable0
("DIE Value form not supported yet");
420
0
  }
421
0
}
422
423
/// SizeOf - Determine size of integer value in bytes.
424
///
425
224k
unsigned DIEInteger::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
426
224k
  switch (Form) {
427
2.58k
  case dwarf::DW_FORM_implicit_const:
428
2.58k
  case dwarf::DW_FORM_flag_present:
429
2.58k
    return 0;
430
153k
  case dwarf::DW_FORM_flag:
431
153k
  case dwarf::DW_FORM_ref1:
432
153k
  case dwarf::DW_FORM_data1:
433
153k
  case dwarf::DW_FORM_strx1:
434
153k
  case dwarf::DW_FORM_addrx1:
435
153k
    return sizeof(int8_t);
436
15.7k
  case dwarf::DW_FORM_ref2:
437
15.7k
  case dwarf::DW_FORM_data2:
438
15.7k
  case dwarf::DW_FORM_strx2:
439
15.7k
  case dwarf::DW_FORM_addrx2:
440
15.7k
    return sizeof(int16_t);
441
196
  case dwarf::DW_FORM_ref4:
442
196
  case dwarf::DW_FORM_data4:
443
196
  case dwarf::DW_FORM_ref_sup4:
444
196
  case dwarf::DW_FORM_strx4:
445
196
  case dwarf::DW_FORM_addrx4:
446
196
    return sizeof(int32_t);
447
294
  case dwarf::DW_FORM_ref8:
448
294
  case dwarf::DW_FORM_ref_sig8:
449
294
  case dwarf::DW_FORM_data8:
450
294
  case dwarf::DW_FORM_ref_sup8:
451
294
    return sizeof(int64_t);
452
178
  case dwarf::DW_FORM_ref_addr:
453
178
    if (AP->getDwarfVersion() == 2)
454
102
      return AP->getPointerSize();
455
76
    
LLVM_FALLTHROUGH76
;
456
49.7k
  case dwarf::DW_FORM_strp:
457
49.7k
  case dwarf::DW_FORM_GNU_ref_alt:
458
49.7k
  case dwarf::DW_FORM_GNU_strp_alt:
459
49.7k
  case dwarf::DW_FORM_line_strp:
460
49.7k
  case dwarf::DW_FORM_sec_offset:
461
49.7k
  case dwarf::DW_FORM_strp_sup:
462
49.7k
    switch (AP->OutStreamer->getContext().getDwarfFormat()) {
463
49.7k
    case dwarf::DWARF32:
464
49.7k
      return 4;
465
0
    case dwarf::DWARF64:
466
0
      return 8;
467
0
    }
468
0
    
llvm_unreachable0
("Invalid DWARF format");
469
1.04k
  case dwarf::DW_FORM_GNU_str_index:
470
1.04k
  case dwarf::DW_FORM_GNU_addr_index:
471
1.04k
  case dwarf::DW_FORM_ref_udata:
472
1.04k
  case dwarf::DW_FORM_udata:
473
1.04k
    return getULEB128Size(Integer);
474
662
  case dwarf::DW_FORM_sdata:
475
662
    return getSLEB128Size(Integer);
476
519
  case dwarf::DW_FORM_addr:
477
519
    return AP->getPointerSize();
478
0
  
default: 0
llvm_unreachable0
("DIE Value form not supported yet");
479
0
  }
480
0
}
481
482
LLVM_DUMP_METHOD
483
0
void DIEInteger::print(raw_ostream &O) const {
484
0
  O << "Int: " << (int64_t)Integer << "  0x";
485
0
  O.write_hex(Integer);
486
0
}
487
488
//===----------------------------------------------------------------------===//
489
// DIEExpr Implementation
490
//===----------------------------------------------------------------------===//
491
492
/// EmitValue - Emit expression value.
493
///
494
11
void DIEExpr::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
495
11
  AP->EmitDebugThreadLocal(Expr, SizeOf(AP, Form));
496
11
}
497
498
/// SizeOf - Determine size of expression value in bytes.
499
///
500
22
unsigned DIEExpr::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
501
22
  if (
Form == dwarf::DW_FORM_data422
)
return 40
;
502
22
  
if (22
Form == dwarf::DW_FORM_sec_offset22
)
return 40
;
503
22
  
if (22
Form == dwarf::DW_FORM_strp22
)
return 40
;
504
22
  return AP->getPointerSize();
505
22
}
506
507
LLVM_DUMP_METHOD
508
0
void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; }
509
510
//===----------------------------------------------------------------------===//
511
// DIELabel Implementation
512
//===----------------------------------------------------------------------===//
513
514
/// EmitValue - Emit label value.
515
///
516
73.7k
void DIELabel::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
517
73.7k
  AP->EmitLabelReference(Label, SizeOf(AP, Form),
518
73.7k
                         Form == dwarf::DW_FORM_strp ||
519
71.1k
                             Form == dwarf::DW_FORM_sec_offset ||
520
70.8k
                             Form == dwarf::DW_FORM_ref_addr ||
521
70.8k
                             Form == dwarf::DW_FORM_data4);
522
73.7k
}
523
524
/// SizeOf - Determine size of label value in bytes.
525
///
526
147k
unsigned DIELabel::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
527
147k
  if (
Form == dwarf::DW_FORM_data4147k
)
return 4102
;
528
147k
  
if (147k
Form == dwarf::DW_FORM_sec_offset147k
)
return 4656
;
529
146k
  
if (146k
Form == dwarf::DW_FORM_strp146k
)
return 45.09k
;
530
141k
  return AP->MAI->getCodePointerSize();
531
141k
}
532
533
LLVM_DUMP_METHOD
534
0
void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); }
535
536
//===----------------------------------------------------------------------===//
537
// DIEDelta Implementation
538
//===----------------------------------------------------------------------===//
539
540
/// EmitValue - Emit delta value.
541
///
542
10.7k
void DIEDelta::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
543
10.7k
  AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
544
10.7k
}
545
546
/// SizeOf - Determine size of delta value in bytes.
547
///
548
21.5k
unsigned DIEDelta::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
549
21.5k
  if (
Form == dwarf::DW_FORM_data421.5k
)
return 420.9k
;
550
602
  
if (602
Form == dwarf::DW_FORM_sec_offset602
)
return 4602
;
551
0
  
if (0
Form == dwarf::DW_FORM_strp0
)
return 40
;
552
0
  return AP->MAI->getCodePointerSize();
553
0
}
554
555
LLVM_DUMP_METHOD
556
0
void DIEDelta::print(raw_ostream &O) const {
557
0
  O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
558
0
}
559
560
//===----------------------------------------------------------------------===//
561
// DIEString Implementation
562
//===----------------------------------------------------------------------===//
563
564
/// EmitValue - Emit string value.
565
///
566
27.1k
void DIEString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
567
27.1k
  assert(
568
27.1k
      (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
569
27.1k
      "Expected valid string form");
570
27.1k
571
27.1k
  // Index of string in symbol table.
572
27.1k
  if (
Form == dwarf::DW_FORM_GNU_str_index27.1k
) {
573
301
    DIEInteger(S.getIndex()).EmitValue(AP, Form);
574
301
    return;
575
301
  }
576
26.8k
577
26.8k
  // Relocatable symbol.
578
27.1k
  assert(Form == dwarf::DW_FORM_strp);
579
26.8k
  if (
AP->MAI->doesDwarfUseRelocationsAcrossSections()26.8k
) {
580
2.54k
    DIELabel(S.getSymbol()).EmitValue(AP, Form);
581
2.54k
    return;
582
2.54k
  }
583
24.2k
584
24.2k
  // Offset into symbol table.
585
24.2k
  DIEInteger(S.getOffset()).EmitValue(AP, Form);
586
24.2k
}
587
588
/// SizeOf - Determine size of delta value in bytes.
589
///
590
27.1k
unsigned DIEString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
591
27.1k
  assert(
592
27.1k
      (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
593
27.1k
      "Expected valid string form");
594
27.1k
595
27.1k
  // Index of string in symbol table.
596
27.1k
  if (Form == dwarf::DW_FORM_GNU_str_index)
597
301
    return DIEInteger(S.getIndex()).SizeOf(AP, Form);
598
26.8k
599
26.8k
  // Relocatable symbol.
600
26.8k
  
if (26.8k
AP->MAI->doesDwarfUseRelocationsAcrossSections()26.8k
)
601
2.54k
    return DIELabel(S.getSymbol()).SizeOf(AP, Form);
602
24.2k
603
24.2k
  // Offset into symbol table.
604
24.2k
  return DIEInteger(S.getOffset()).SizeOf(AP, Form);
605
24.2k
}
606
607
LLVM_DUMP_METHOD
608
0
void DIEString::print(raw_ostream &O) const {
609
0
  O << "String: " << S.getString();
610
0
}
611
612
//===----------------------------------------------------------------------===//
613
// DIEInlineString Implementation
614
//===----------------------------------------------------------------------===//
615
8
void DIEInlineString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
616
8
  if (
Form == dwarf::DW_FORM_string8
) {
617
8
    for (char ch : S)
618
40
      AP->EmitInt8(ch);
619
8
    AP->EmitInt8(0);
620
8
    return;
621
8
  }
622
0
  
llvm_unreachable0
("Expected valid string form");
623
0
}
624
625
8
unsigned DIEInlineString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
626
8
  // Emit string bytes + NULL byte.
627
8
  return S.size() + 1;
628
8
}
629
630
LLVM_DUMP_METHOD
631
0
void DIEInlineString::print(raw_ostream &O) const {
632
0
  O << "InlineString: " << S;
633
0
}
634
635
//===----------------------------------------------------------------------===//
636
// DIEEntry Implementation
637
//===----------------------------------------------------------------------===//
638
639
/// EmitValue - Emit debug information entry offset.
640
///
641
40.3k
void DIEEntry::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
642
40.3k
643
40.3k
  switch (Form) {
644
40.2k
  case dwarf::DW_FORM_ref1:
645
40.2k
  case dwarf::DW_FORM_ref2:
646
40.2k
  case dwarf::DW_FORM_ref4:
647
40.2k
  case dwarf::DW_FORM_ref8:
648
40.2k
    AP->OutStreamer->EmitIntValue(Entry->getOffset(), SizeOf(AP, Form));
649
40.2k
    return;
650
40.2k
651
0
  case dwarf::DW_FORM_ref_udata:
652
0
    AP->EmitULEB128(Entry->getOffset());
653
0
    return;
654
40.2k
655
84
  case dwarf::DW_FORM_ref_addr: {
656
84
    // Get the absolute offset for this DIE within the debug info/types section.
657
84
    unsigned Addr = Entry->getDebugSectionOffset();
658
84
    if (const MCSymbol *SectionSym =
659
13
            Entry->getUnit()->getCrossSectionRelativeBaseAddress()) {
660
13
      AP->EmitLabelPlusOffset(SectionSym, Addr, SizeOf(AP, Form), true);
661
13
      return;
662
13
    }
663
71
664
71
    AP->OutStreamer->EmitIntValue(Addr, SizeOf(AP, Form));
665
71
    return;
666
71
  }
667
0
  default:
668
0
    llvm_unreachable("Improper form for DIE reference");
669
0
  }
670
0
}
671
672
80.2k
unsigned DIEEntry::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
673
80.2k
  switch (Form) {
674
24
  case dwarf::DW_FORM_ref1:
675
24
    return 1;
676
24
  case dwarf::DW_FORM_ref2:
677
24
    return 2;
678
80.0k
  case dwarf::DW_FORM_ref4:
679
80.0k
    return 4;
680
24
  case dwarf::DW_FORM_ref8:
681
24
    return 8;
682
0
  case dwarf::DW_FORM_ref_udata:
683
0
    return getULEB128Size(Entry->getOffset());
684
168
  case dwarf::DW_FORM_ref_addr:
685
168
    if (AP->getDwarfVersion() == 2)
686
62
      return AP->MAI->getCodePointerSize();
687
106
    switch (AP->OutStreamer->getContext().getDwarfFormat()) {
688
106
    case dwarf::DWARF32:
689
106
      return 4;
690
0
    case dwarf::DWARF64:
691
0
      return 8;
692
0
    }
693
0
    
llvm_unreachable0
("Invalid DWARF format");
694
0
695
0
  default:
696
0
    llvm_unreachable("Improper form for DIE reference");
697
0
  }
698
0
}
699
700
LLVM_DUMP_METHOD
701
0
void DIEEntry::print(raw_ostream &O) const {
702
0
  O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
703
0
}
704
705
//===----------------------------------------------------------------------===//
706
// DIELoc Implementation
707
//===----------------------------------------------------------------------===//
708
709
/// ComputeSize - calculate the size of the location expression.
710
///
711
1.89k
unsigned DIELoc::ComputeSize(const AsmPrinter *AP) const {
712
1.89k
  if (
!Size1.89k
) {
713
1.85k
    for (const auto &V : values())
714
3.15k
      Size += V.SizeOf(AP);
715
1.85k
  }
716
1.89k
717
1.89k
  return Size;
718
1.89k
}
719
720
/// EmitValue - Emit location data.
721
///
722
1.85k
void DIELoc::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
723
1.85k
  switch (Form) {
724
0
  
default: 0
llvm_unreachable0
("Improper form for block");
725
355
  case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
726
0
  case dwarf::DW_FORM_block2: Asm->EmitInt16(Size);   break;
727
0
  case dwarf::DW_FORM_block4: Asm->EmitInt32(Size);   break;
728
1.49k
  case dwarf::DW_FORM_block:
729
1.49k
  case dwarf::DW_FORM_exprloc:
730
1.49k
    Asm->EmitULEB128(Size); break;
731
1.85k
  }
732
1.85k
733
1.85k
  for (const auto &V : values())
734
3.13k
    V.EmitValue(Asm);
735
1.85k
}
736
737
/// SizeOf - Determine size of location data in bytes.
738
///
739
1.78k
unsigned DIELoc::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
740
1.78k
  switch (Form) {
741
355
  case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
742
0
  case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
743
0
  case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
744
1.43k
  case dwarf::DW_FORM_block:
745
1.43k
  case dwarf::DW_FORM_exprloc:
746
1.43k
    return Size + getULEB128Size(Size);
747
0
  
default: 0
llvm_unreachable0
("Improper form for block");
748
0
  }
749
0
}
750
751
LLVM_DUMP_METHOD
752
0
void DIELoc::print(raw_ostream &O) const {
753
0
  printValues(O, *this, "ExprLoc", Size, 5);
754
0
}
755
756
//===----------------------------------------------------------------------===//
757
// DIEBlock Implementation
758
//===----------------------------------------------------------------------===//
759
760
/// ComputeSize - calculate the size of the block.
761
///
762
322
unsigned DIEBlock::ComputeSize(const AsmPrinter *AP) const {
763
322
  if (
!Size322
) {
764
322
    for (const auto &V : values())
765
1.22k
      Size += V.SizeOf(AP);
766
322
  }
767
322
768
322
  return Size;
769
322
}
770
771
/// EmitValue - Emit block data.
772
///
773
321
void DIEBlock::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
774
321
  switch (Form) {
775
0
  
default: 0
llvm_unreachable0
("Improper form for block");
776
297
  case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
777
8
  case dwarf::DW_FORM_block2: Asm->EmitInt16(Size);   break;
778
8
  case dwarf::DW_FORM_block4: Asm->EmitInt32(Size);   break;
779
8
  case dwarf::DW_FORM_block:  Asm->EmitULEB128(Size); break;
780
321
  }
781
321
782
321
  for (const auto &V : values())
783
1.22k
    V.EmitValue(Asm);
784
321
}
785
786
/// SizeOf - Determine size of block data in bytes.
787
///
788
33
unsigned DIEBlock::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
789
33
  switch (Form) {
790
9
  case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
791
8
  case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
792
8
  case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
793
8
  case dwarf::DW_FORM_block:  return Size + getULEB128Size(Size);
794
0
  
default: 0
llvm_unreachable0
("Improper form for block");
795
0
  }
796
0
}
797
798
LLVM_DUMP_METHOD
799
0
void DIEBlock::print(raw_ostream &O) const {
800
0
  printValues(O, *this, "Blk", Size, 5);
801
0
}
802
803
//===----------------------------------------------------------------------===//
804
// DIELocList Implementation
805
//===----------------------------------------------------------------------===//
806
807
322
unsigned DIELocList::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
808
322
  if (Form == dwarf::DW_FORM_data4)
809
46
    return 4;
810
276
  
if (276
Form == dwarf::DW_FORM_sec_offset276
)
811
276
    return 4;
812
0
  return AP->MAI->getCodePointerSize();
813
0
}
814
815
/// EmitValue - Emit label value.
816
///
817
322
void DIELocList::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
818
322
  DwarfDebug *DD = AP->getDwarfDebug();
819
322
  MCSymbol *Label = DD->getDebugLocs().getList(Index).Label;
820
322
  AP->emitDwarfSymbolReference(Label, /*ForceOffset*/ DD->useSplitDwarf());
821
322
}
822
823
LLVM_DUMP_METHOD
824
0
void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; }