LLVM  14.0.0git
DIE.cpp
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1 //===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Data structures for DWARF info entries.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/CodeGen/DIE.h"
14 #include "DwarfCompileUnit.h"
15 #include "DwarfDebug.h"
16 #include "DwarfUnit.h"
17 #include "llvm/ADT/Twine.h"
19 #include "llvm/Config/llvm-config.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"
27 #include "llvm/Support/Format.h"
29 #include "llvm/Support/LEB128.h"
30 #include "llvm/Support/MD5.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 ///
43  // Explicitly cast to an integer type for which FoldingSetNodeID has
44  // overloads. Otherwise MSVC 2010 thinks this call is ambiguous.
45  ID.AddInteger(unsigned(Attribute));
46  ID.AddInteger(unsigned(Form));
47  if (Form == dwarf::DW_FORM_implicit_const)
48  ID.AddInteger(Value);
49 }
50 
51 //===----------------------------------------------------------------------===//
52 // DIEAbbrev Implementation
53 //===----------------------------------------------------------------------===//
54 
55 /// Profile - Used to gather unique data for the abbreviation folding set.
56 ///
58  ID.AddInteger(unsigned(Tag));
59  ID.AddInteger(unsigned(Children));
60 
61  // For each attribute description.
62  for (unsigned i = 0, N = Data.size(); i < N; ++i)
63  Data[i].Profile(ID);
64 }
65 
66 /// Emit - Print the abbreviation using the specified asm printer.
67 ///
68 void DIEAbbrev::Emit(const AsmPrinter *AP) const {
69  // Emit its Dwarf tag type.
70  AP->emitULEB128(Tag, dwarf::TagString(Tag).data());
71 
72  // Emit whether it has children DIEs.
73  AP->emitULEB128((unsigned)Children, dwarf::ChildrenString(Children).data());
74 
75  // For each attribute description.
76  for (unsigned i = 0, N = Data.size(); i < N; ++i) {
77  const DIEAbbrevData &AttrData = Data[i];
78 
79  // Emit attribute type.
80  AP->emitULEB128(AttrData.getAttribute(),
82 
83  // 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  LLVM_DEBUG(dbgs() << "Invalid form " << format("0x%x", AttrData.getForm())
90  << " for DWARF version " << AP->getDwarfVersion()
91  << "\n");
92  llvm_unreachable("Invalid form for specified DWARF version");
93  }
94 #endif
95  AP->emitULEB128(AttrData.getForm(),
96  dwarf::FormEncodingString(AttrData.getForm()).data());
97 
98  // Emit value for DW_FORM_implicit_const.
99  if (AttrData.getForm() == dwarf::DW_FORM_implicit_const)
100  AP->emitSLEB128(AttrData.getValue());
101  }
102 
103  // Mark end of abbreviation.
104  AP->emitULEB128(0, "EOM(1)");
105  AP->emitULEB128(0, "EOM(2)");
106 }
107 
110  O << "Abbreviation @"
111  << format("0x%lx", (long)(intptr_t)this)
112  << " "
113  << dwarf::TagString(Tag)
114  << " "
115  << dwarf::ChildrenString(Children)
116  << '\n';
117 
118  for (unsigned i = 0, N = Data.size(); i < N; ++i) {
119  O << " "
120  << dwarf::AttributeString(Data[i].getAttribute())
121  << " "
122  << dwarf::FormEncodingString(Data[i].getForm());
123 
124  if (Data[i].getForm() == dwarf::DW_FORM_implicit_const)
125  O << " " << Data[i].getValue();
126 
127  O << '\n';
128  }
129 }
130 
131 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
133  print(dbgs());
134 }
135 #endif
136 
137 //===----------------------------------------------------------------------===//
138 // DIEAbbrevSet Implementation
139 //===----------------------------------------------------------------------===//
140 
142  for (DIEAbbrev *Abbrev : Abbreviations)
143  Abbrev->~DIEAbbrev();
144 }
145 
147 
149  DIEAbbrev Abbrev = Die.generateAbbrev();
150  Abbrev.Profile(ID);
151 
152  void *InsertPos;
153  if (DIEAbbrev *Existing =
154  AbbreviationsSet.FindNodeOrInsertPos(ID, InsertPos)) {
155  Die.setAbbrevNumber(Existing->getNumber());
156  return *Existing;
157  }
158 
159  // Move the abbreviation to the heap and assign a number.
160  DIEAbbrev *New = new (Alloc) DIEAbbrev(std::move(Abbrev));
161  Abbreviations.push_back(New);
162  New->setNumber(Abbreviations.size());
163  Die.setAbbrevNumber(Abbreviations.size());
164 
165  // Store it for lookup.
166  AbbreviationsSet.InsertNode(New, InsertPos);
167  return *New;
168 }
169 
171  if (!Abbreviations.empty()) {
172  // Start the debug abbrev section.
173  AP->OutStreamer->SwitchSection(Section);
174  AP->emitDwarfAbbrevs(Abbreviations);
175  }
176 }
177 
178 //===----------------------------------------------------------------------===//
179 // DIE Implementation
180 //===----------------------------------------------------------------------===//
181 
182 DIE *DIE::getParent() const {
183  return Owner.dyn_cast<DIE*>();
184 }
185 
187  DIEAbbrev Abbrev(Tag, hasChildren());
188  for (const DIEValue &V : values())
189  if (V.getForm() == dwarf::DW_FORM_implicit_const)
190  Abbrev.AddImplicitConstAttribute(V.getAttribute(),
191  V.getDIEInteger().getValue());
192  else
193  Abbrev.AddAttribute(V.getAttribute(), V.getForm());
194  return Abbrev;
195 }
196 
198  const DIEUnit *Unit = getUnit();
199  assert(Unit && "DIE must be owned by a DIEUnit to get its absolute offset");
200  return Unit->getDebugSectionOffset() + getOffset();
201 }
202 
203 const DIE *DIE::getUnitDie() const {
204  const DIE *p = this;
205  while (p) {
206  if (p->getTag() == dwarf::DW_TAG_compile_unit ||
207  p->getTag() == dwarf::DW_TAG_type_unit)
208  return p;
209  p = p->getParent();
210  }
211  return nullptr;
212 }
213 
215  const DIE *UnitDie = getUnitDie();
216  if (UnitDie)
217  return UnitDie->Owner.dyn_cast<DIEUnit*>();
218  return nullptr;
219 }
220 
222  // Iterate through all the attributes until we find the one we're
223  // looking for, if we can't find it return NULL.
224  for (const auto &V : values())
225  if (V.getAttribute() == Attribute)
226  return V;
227  return DIEValue();
228 }
229 
231 static void printValues(raw_ostream &O, const DIEValueList &Values,
232  StringRef Type, unsigned Size, unsigned IndentCount) {
233  O << Type << ": Size: " << Size << "\n";
234 
235  unsigned I = 0;
236  const std::string Indent(IndentCount, ' ');
237  for (const auto &V : Values.values()) {
238  O << Indent;
239  O << "Blk[" << I++ << "]";
240  O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
241  V.print(O);
242  O << "\n";
243  }
244 }
245 
247 void DIE::print(raw_ostream &O, unsigned IndentCount) const {
248  const std::string Indent(IndentCount, ' ');
249  O << Indent << "Die: " << format("0x%lx", (long)(intptr_t) this)
250  << ", Offset: " << Offset << ", Size: " << Size << "\n";
251 
252  O << Indent << dwarf::TagString(getTag()) << " "
253  << dwarf::ChildrenString(hasChildren()) << "\n";
254 
255  IndentCount += 2;
256  for (const auto &V : values()) {
257  O << Indent;
258  O << dwarf::AttributeString(V.getAttribute());
259  O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
260  V.print(O);
261  O << "\n";
262  }
263  IndentCount -= 2;
264 
265  for (const auto &Child : children())
266  Child.print(O, IndentCount + 4);
267 
268  O << "\n";
269 }
270 
271 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
273  print(dbgs());
274 }
275 #endif
276 
278  DIEAbbrevSet &AbbrevSet,
279  unsigned CUOffset) {
280  // Unique the abbreviation and fill in the abbreviation number so this DIE
281  // can be emitted.
282  const DIEAbbrev &Abbrev = AbbrevSet.uniqueAbbreviation(*this);
283 
284  // Set compile/type unit relative offset of this DIE.
285  setOffset(CUOffset);
286 
287  // Add the byte size of the abbreviation code.
288  CUOffset += getULEB128Size(getAbbrevNumber());
289 
290  // Add the byte size of all the DIE attribute values.
291  for (const auto &V : values())
292  CUOffset += V.sizeOf(FormParams);
293 
294  // Let the children compute their offsets and abbreviation numbers.
295  if (hasChildren()) {
296  (void)Abbrev;
297  assert(Abbrev.hasChildren() && "Children flag not set");
298 
299  for (auto &Child : children())
300  CUOffset =
301  Child.computeOffsetsAndAbbrevs(FormParams, AbbrevSet, CUOffset);
302 
303  // Each child chain is terminated with a zero byte, adjust the offset.
304  CUOffset += sizeof(int8_t);
305  }
306 
307  // Compute the byte size of this DIE and all of its children correctly. This
308  // is needed so that top level DIE can help the compile unit set its length
309  // correctly.
310  setSize(CUOffset - getOffset());
311  return CUOffset;
312 }
313 
314 //===----------------------------------------------------------------------===//
315 // DIEUnit Implementation
316 //===----------------------------------------------------------------------===//
318  : Die(UnitTag), Section(nullptr), Offset(0) {
319  Die.Owner = this;
320  assert((UnitTag == dwarf::DW_TAG_compile_unit ||
321  UnitTag == dwarf::DW_TAG_skeleton_unit ||
322  UnitTag == dwarf::DW_TAG_type_unit ||
323  UnitTag == dwarf::DW_TAG_partial_unit) &&
324  "expected a unit TAG");
325 }
326 
327 void DIEValue::emitValue(const AsmPrinter *AP) const {
328  switch (Ty) {
329  case isNone:
330  llvm_unreachable("Expected valid DIEValue");
331 #define HANDLE_DIEVALUE(T) \
332  case is##T: \
333  getDIE##T().emitValue(AP, Form); \
334  break;
335 #include "llvm/CodeGen/DIEValue.def"
336  }
337 }
338 
339 unsigned DIEValue::sizeOf(const dwarf::FormParams &FormParams) const {
340  switch (Ty) {
341  case isNone:
342  llvm_unreachable("Expected valid DIEValue");
343 #define HANDLE_DIEVALUE(T) \
344  case is##T: \
345  return getDIE##T().sizeOf(FormParams, Form);
346 #include "llvm/CodeGen/DIEValue.def"
347  }
348  llvm_unreachable("Unknown DIE kind");
349 }
350 
353  switch (Ty) {
354  case isNone:
355  llvm_unreachable("Expected valid DIEValue");
356 #define HANDLE_DIEVALUE(T) \
357  case is##T: \
358  getDIE##T().print(O); \
359  break;
360 #include "llvm/CodeGen/DIEValue.def"
361  }
362 }
363 
364 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
366  print(dbgs());
367 }
368 #endif
369 
370 //===----------------------------------------------------------------------===//
371 // DIEInteger Implementation
372 //===----------------------------------------------------------------------===//
373 
374 /// EmitValue - Emit integer of appropriate size.
375 ///
377  switch (Form) {
378  case dwarf::DW_FORM_implicit_const:
379  case dwarf::DW_FORM_flag_present:
380  // Emit something to keep the lines and comments in sync.
381  // FIXME: Is there a better way to do this?
382  Asm->OutStreamer->AddBlankLine();
383  return;
384  case dwarf::DW_FORM_flag:
385  case dwarf::DW_FORM_ref1:
386  case dwarf::DW_FORM_data1:
387  case dwarf::DW_FORM_strx1:
388  case dwarf::DW_FORM_addrx1:
389  case dwarf::DW_FORM_ref2:
390  case dwarf::DW_FORM_data2:
391  case dwarf::DW_FORM_strx2:
392  case dwarf::DW_FORM_addrx2:
393  case dwarf::DW_FORM_strx3:
394  case dwarf::DW_FORM_strp:
395  case dwarf::DW_FORM_ref4:
396  case dwarf::DW_FORM_data4:
397  case dwarf::DW_FORM_ref_sup4:
398  case dwarf::DW_FORM_strx4:
399  case dwarf::DW_FORM_addrx4:
400  case dwarf::DW_FORM_ref8:
401  case dwarf::DW_FORM_ref_sig8:
402  case dwarf::DW_FORM_data8:
403  case dwarf::DW_FORM_ref_sup8:
404  case dwarf::DW_FORM_GNU_ref_alt:
405  case dwarf::DW_FORM_GNU_strp_alt:
406  case dwarf::DW_FORM_line_strp:
407  case dwarf::DW_FORM_sec_offset:
408  case dwarf::DW_FORM_strp_sup:
409  case dwarf::DW_FORM_addr:
410  case dwarf::DW_FORM_ref_addr:
411  Asm->OutStreamer->emitIntValue(Integer,
412  sizeOf(Asm->getDwarfFormParams(), Form));
413  return;
414  case dwarf::DW_FORM_GNU_str_index:
415  case dwarf::DW_FORM_GNU_addr_index:
416  case dwarf::DW_FORM_ref_udata:
417  case dwarf::DW_FORM_strx:
418  case dwarf::DW_FORM_addrx:
419  case dwarf::DW_FORM_rnglistx:
420  case dwarf::DW_FORM_udata:
421  Asm->emitULEB128(Integer);
422  return;
423  case dwarf::DW_FORM_sdata:
424  Asm->emitSLEB128(Integer);
425  return;
426  default: llvm_unreachable("DIE Value form not supported yet");
427  }
428 }
429 
430 /// sizeOf - Determine size of integer value in bytes.
431 ///
432 unsigned DIEInteger::sizeOf(const dwarf::FormParams &FormParams,
433  dwarf::Form Form) const {
434  if (Optional<uint8_t> FixedSize =
435  dwarf::getFixedFormByteSize(Form, FormParams))
436  return *FixedSize;
437 
438  switch (Form) {
439  case dwarf::DW_FORM_GNU_str_index:
440  case dwarf::DW_FORM_GNU_addr_index:
441  case dwarf::DW_FORM_ref_udata:
442  case dwarf::DW_FORM_strx:
443  case dwarf::DW_FORM_addrx:
444  case dwarf::DW_FORM_rnglistx:
445  case dwarf::DW_FORM_udata:
446  return getULEB128Size(Integer);
447  case dwarf::DW_FORM_sdata:
448  return getSLEB128Size(Integer);
449  default: llvm_unreachable("DIE Value form not supported yet");
450  }
451 }
452 
455  O << "Int: " << (int64_t)Integer << " 0x";
456  O.write_hex(Integer);
457 }
458 
459 //===----------------------------------------------------------------------===//
460 // DIEExpr Implementation
461 //===----------------------------------------------------------------------===//
462 
463 /// EmitValue - Emit expression value.
464 ///
466  AP->emitDebugValue(Expr, sizeOf(AP->getDwarfFormParams(), Form));
467 }
468 
469 /// SizeOf - Determine size of expression value in bytes.
470 ///
471 unsigned DIEExpr::sizeOf(const dwarf::FormParams &FormParams,
472  dwarf::Form Form) const {
473  switch (Form) {
474  case dwarf::DW_FORM_data4:
475  return 4;
476  case dwarf::DW_FORM_data8:
477  return 8;
478  case dwarf::DW_FORM_sec_offset:
479  return FormParams.getDwarfOffsetByteSize();
480  default:
481  llvm_unreachable("DIE Value form not supported yet");
482  }
483 }
484 
486 void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; }
487 
488 //===----------------------------------------------------------------------===//
489 // DIELabel Implementation
490 //===----------------------------------------------------------------------===//
491 
492 /// EmitValue - Emit label value.
493 ///
495  bool IsSectionRelative = Form != dwarf::DW_FORM_addr;
497  IsSectionRelative);
498 }
499 
500 /// sizeOf - Determine size of label value in bytes.
501 ///
502 unsigned DIELabel::sizeOf(const dwarf::FormParams &FormParams,
503  dwarf::Form Form) const {
504  switch (Form) {
505  case dwarf::DW_FORM_data4:
506  return 4;
507  case dwarf::DW_FORM_data8:
508  return 8;
509  case dwarf::DW_FORM_sec_offset:
510  case dwarf::DW_FORM_strp:
511  return FormParams.getDwarfOffsetByteSize();
512  case dwarf::DW_FORM_addr:
513  return FormParams.AddrSize;
514  default:
515  llvm_unreachable("DIE Value form not supported yet");
516  }
517 }
518 
520 void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); }
521 
522 //===----------------------------------------------------------------------===//
523 // DIEBaseTypeRef Implementation
524 //===----------------------------------------------------------------------===//
525 
527  uint64_t Offset = CU->ExprRefedBaseTypes[Index].Die->getOffset();
528  assert(Offset < (1ULL << (ULEB128PadSize * 7)) && "Offset wont fit");
529  AP->emitULEB128(Offset, nullptr, ULEB128PadSize);
530 }
531 
533  return ULEB128PadSize;
534 }
535 
537 void DIEBaseTypeRef::print(raw_ostream &O) const { O << "BaseTypeRef: " << Index; }
538 
539 //===----------------------------------------------------------------------===//
540 // DIEDelta Implementation
541 //===----------------------------------------------------------------------===//
542 
543 /// EmitValue - Emit delta value.
544 ///
546  AP->emitLabelDifference(LabelHi, LabelLo,
547  sizeOf(AP->getDwarfFormParams(), Form));
548 }
549 
550 /// SizeOf - Determine size of delta value in bytes.
551 ///
552 unsigned DIEDelta::sizeOf(const dwarf::FormParams &FormParams,
553  dwarf::Form Form) const {
554  switch (Form) {
555  case dwarf::DW_FORM_data4:
556  return 4;
557  case dwarf::DW_FORM_data8:
558  return 8;
559  case dwarf::DW_FORM_sec_offset:
560  return FormParams.getDwarfOffsetByteSize();
561  default:
562  llvm_unreachable("DIE Value form not supported yet");
563  }
564 }
565 
568  O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
569 }
570 
571 //===----------------------------------------------------------------------===//
572 // DIEString Implementation
573 //===----------------------------------------------------------------------===//
574 
575 /// EmitValue - Emit string value.
576 ///
578  // Index of string in symbol table.
579  switch (Form) {
580  case dwarf::DW_FORM_GNU_str_index:
581  case dwarf::DW_FORM_strx:
582  case dwarf::DW_FORM_strx1:
583  case dwarf::DW_FORM_strx2:
584  case dwarf::DW_FORM_strx3:
585  case dwarf::DW_FORM_strx4:
586  DIEInteger(S.getIndex()).emitValue(AP, Form);
587  return;
588  case dwarf::DW_FORM_strp:
590  DIELabel(S.getSymbol()).emitValue(AP, Form);
591  else
593  return;
594  default:
595  llvm_unreachable("Expected valid string form");
596  }
597 }
598 
599 /// sizeOf - Determine size of delta value in bytes.
600 ///
601 unsigned DIEString::sizeOf(const dwarf::FormParams &FormParams,
602  dwarf::Form Form) const {
603  // Index of string in symbol table.
604  switch (Form) {
605  case dwarf::DW_FORM_GNU_str_index:
606  case dwarf::DW_FORM_strx:
607  case dwarf::DW_FORM_strx1:
608  case dwarf::DW_FORM_strx2:
609  case dwarf::DW_FORM_strx3:
610  case dwarf::DW_FORM_strx4:
611  return DIEInteger(S.getIndex()).sizeOf(FormParams, Form);
612  case dwarf::DW_FORM_strp:
613  if (FormParams.DwarfUsesRelocationsAcrossSections)
614  return DIELabel(S.getSymbol()).sizeOf(FormParams, Form);
615  return DIEInteger(S.getOffset()).sizeOf(FormParams, Form);
616  default:
617  llvm_unreachable("Expected valid string form");
618  }
619 }
620 
623  O << "String: " << S.getString();
624 }
625 
626 //===----------------------------------------------------------------------===//
627 // DIEInlineString Implementation
628 //===----------------------------------------------------------------------===//
630  if (Form == dwarf::DW_FORM_string) {
631  AP->OutStreamer->emitBytes(S);
632  AP->emitInt8(0);
633  return;
634  }
635  llvm_unreachable("Expected valid string form");
636 }
637 
639  // Emit string bytes + NULL byte.
640  return S.size() + 1;
641 }
642 
645  O << "InlineString: " << S;
646 }
647 
648 //===----------------------------------------------------------------------===//
649 // DIEEntry Implementation
650 //===----------------------------------------------------------------------===//
651 
652 /// EmitValue - Emit debug information entry offset.
653 ///
655 
656  switch (Form) {
657  case dwarf::DW_FORM_ref1:
658  case dwarf::DW_FORM_ref2:
659  case dwarf::DW_FORM_ref4:
660  case dwarf::DW_FORM_ref8:
661  AP->OutStreamer->emitIntValue(Entry->getOffset(),
662  sizeOf(AP->getDwarfFormParams(), Form));
663  return;
664 
665  case dwarf::DW_FORM_ref_udata:
666  AP->emitULEB128(Entry->getOffset());
667  return;
668 
669  case dwarf::DW_FORM_ref_addr: {
670  // Get the absolute offset for this DIE within the debug info/types section.
672  if (const MCSymbol *SectionSym =
674  AP->emitLabelPlusOffset(SectionSym, Addr,
675  sizeOf(AP->getDwarfFormParams(), Form), true);
676  return;
677  }
678 
679  AP->OutStreamer->emitIntValue(Addr, sizeOf(AP->getDwarfFormParams(), Form));
680  return;
681  }
682  default:
683  llvm_unreachable("Improper form for DIE reference");
684  }
685 }
686 
687 unsigned DIEEntry::sizeOf(const dwarf::FormParams &FormParams,
688  dwarf::Form Form) const {
689  switch (Form) {
690  case dwarf::DW_FORM_ref1:
691  return 1;
692  case dwarf::DW_FORM_ref2:
693  return 2;
694  case dwarf::DW_FORM_ref4:
695  return 4;
696  case dwarf::DW_FORM_ref8:
697  return 8;
698  case dwarf::DW_FORM_ref_udata:
699  return getULEB128Size(Entry->getOffset());
700  case dwarf::DW_FORM_ref_addr:
701  return FormParams.getRefAddrByteSize();
702 
703  default:
704  llvm_unreachable("Improper form for DIE reference");
705  }
706 }
707 
710  O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
711 }
712 
713 //===----------------------------------------------------------------------===//
714 // DIELoc Implementation
715 //===----------------------------------------------------------------------===//
716 
717 unsigned DIELoc::computeSize(const dwarf::FormParams &FormParams) const {
718  if (!Size) {
719  for (const auto &V : values())
720  Size += V.sizeOf(FormParams);
721  }
722 
723  return Size;
724 }
725 
726 /// EmitValue - Emit location data.
727 ///
729  switch (Form) {
730  default: llvm_unreachable("Improper form for block");
731  case dwarf::DW_FORM_block1: Asm->emitInt8(Size); break;
732  case dwarf::DW_FORM_block2: Asm->emitInt16(Size); break;
733  case dwarf::DW_FORM_block4: Asm->emitInt32(Size); break;
734  case dwarf::DW_FORM_block:
735  case dwarf::DW_FORM_exprloc:
736  Asm->emitULEB128(Size);
737  break;
738  }
739 
740  for (const auto &V : values())
741  V.emitValue(Asm);
742 }
743 
744 /// sizeOf - Determine size of location data in bytes.
745 ///
747  switch (Form) {
748  case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
749  case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
750  case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
751  case dwarf::DW_FORM_block:
752  case dwarf::DW_FORM_exprloc:
753  return Size + getULEB128Size(Size);
754  default: llvm_unreachable("Improper form for block");
755  }
756 }
757 
760  printValues(O, *this, "ExprLoc", Size, 5);
761 }
762 
763 //===----------------------------------------------------------------------===//
764 // DIEBlock Implementation
765 //===----------------------------------------------------------------------===//
766 
767 unsigned DIEBlock::computeSize(const dwarf::FormParams &FormParams) const {
768  if (!Size) {
769  for (const auto &V : values())
770  Size += V.sizeOf(FormParams);
771  }
772 
773  return Size;
774 }
775 
776 /// EmitValue - Emit block data.
777 ///
779  switch (Form) {
780  default: llvm_unreachable("Improper form for block");
781  case dwarf::DW_FORM_block1: Asm->emitInt8(Size); break;
782  case dwarf::DW_FORM_block2: Asm->emitInt16(Size); break;
783  case dwarf::DW_FORM_block4: Asm->emitInt32(Size); break;
784  case dwarf::DW_FORM_exprloc:
785  case dwarf::DW_FORM_block:
786  Asm->emitULEB128(Size);
787  break;
788  case dwarf::DW_FORM_string: break;
789  case dwarf::DW_FORM_data16: break;
790  }
791 
792  for (const auto &V : values())
793  V.emitValue(Asm);
794 }
795 
796 /// sizeOf - Determine size of block data in bytes.
797 ///
799  switch (Form) {
800  case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
801  case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
802  case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
803  case dwarf::DW_FORM_exprloc:
804  case dwarf::DW_FORM_block: return Size + getULEB128Size(Size);
805  case dwarf::DW_FORM_data16: return 16;
806  default: llvm_unreachable("Improper form for block");
807  }
808 }
809 
812  printValues(O, *this, "Blk", Size, 5);
813 }
814 
815 //===----------------------------------------------------------------------===//
816 // DIELocList Implementation
817 //===----------------------------------------------------------------------===//
818 
819 unsigned DIELocList::sizeOf(const dwarf::FormParams &FormParams,
820  dwarf::Form Form) const {
821  switch (Form) {
822  case dwarf::DW_FORM_loclistx:
823  return getULEB128Size(Index);
824  case dwarf::DW_FORM_data4:
825  assert(FormParams.Format != dwarf::DWARF64 &&
826  "DW_FORM_data4 is not suitable to emit a pointer to a location list "
827  "in the 64-bit DWARF format");
828  return 4;
829  case dwarf::DW_FORM_data8:
830  assert(FormParams.Format == dwarf::DWARF64 &&
831  "DW_FORM_data8 is not suitable to emit a pointer to a location list "
832  "in the 32-bit DWARF format");
833  return 8;
834  case dwarf::DW_FORM_sec_offset:
835  return FormParams.getDwarfOffsetByteSize();
836  default:
837  llvm_unreachable("DIE Value form not supported yet");
838  }
839 }
840 
841 /// EmitValue - Emit label value.
842 ///
844  if (Form == dwarf::DW_FORM_loclistx) {
845  AP->emitULEB128(Index);
846  return;
847  }
848  DwarfDebug *DD = AP->getDwarfDebug();
849  MCSymbol *Label = DD->getDebugLocs().getList(Index).Label;
850  AP->emitDwarfSymbolReference(Label, /*ForceOffset*/ DD->useSplitDwarf());
851 }
852 
854 void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; }
855 
856 //===----------------------------------------------------------------------===//
857 // DIEAddrOffset Implementation
858 //===----------------------------------------------------------------------===//
859 
860 unsigned DIEAddrOffset::sizeOf(const dwarf::FormParams &FormParams,
861  dwarf::Form) const {
862  return Addr.sizeOf(FormParams, dwarf::DW_FORM_addrx) +
863  Offset.sizeOf(FormParams, dwarf::DW_FORM_data4);
864 }
865 
866 /// EmitValue - Emit label value.
867 ///
869  Addr.emitValue(AP, dwarf::DW_FORM_addrx);
870  Offset.emitValue(AP, dwarf::DW_FORM_data4);
871 }
872 
875  O << "AddrOffset: ";
876  Addr.print(O);
877  O << " + ";
878  Offset.print(O);
879 }
llvm::Check::Size
@ Size
Definition: FileCheck.h:73
i
i
Definition: README.txt:29
llvm::DIEAbbrevData::getForm
dwarf::Form getForm() const
Definition: DIE.h:68
AsmPrinter.h
llvm::DIEAbbrev::print
void print(raw_ostream &O) const
Definition: DIE.cpp:109
llvm::DIE::setOffset
void setOffset(unsigned O)
Definition: DIE.h:850
llvm::DIEExpr::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
SizeOf - Determine size of expression value in bytes.
Definition: DIE.cpp:471
llvm::DIEValue::print
void print(raw_ostream &O) const
Definition: DIE.cpp:352
llvm::AsmPrinter::emitLabelDifference
void emitLabelDifference(const MCSymbol *Hi, const MCSymbol *Lo, unsigned Size) const
Emit something like ".long Hi-Lo" where the size in bytes of the directive is specified by Size and H...
Definition: AsmPrinter.cpp:2447
llvm::DIELabel::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit label value.
Definition: DIE.cpp:494
LLVM_DUMP_METHOD
#define LLVM_DUMP_METHOD
Mark debug helper function definitions like dump() that should not be stripped from debug builds.
Definition: Compiler.h:510
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AllocatorList.h:23
llvm::DebugLocStream::List::Label
MCSymbol * Label
Definition: DebugLocStream.h:35
llvm::MCSymbol
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:41
intptr_t
llvm::DebugLocStream::getList
const List & getList(size_t LI) const
Definition: DebugLocStream.h:61
llvm::AsmPrinter::emitULEB128
void emitULEB128(uint64_t Value, const char *Desc=nullptr, unsigned PadTo=0) const
Emit the specified unsigned leb128 value.
Definition: AsmPrinterDwarf.cpp:47
llvm::AsmPrinter::getDwarfDebug
DwarfDebug * getDwarfDebug()
Definition: AsmPrinter.h:221
llvm::Attribute
Definition: Attributes.h:52
llvm::DIEAbbrev::Profile
void Profile(FoldingSetNodeID &ID) const
Used to gather unique data for the abbreviation folding set.
Definition: DIE.cpp:57
llvm::AsmPrinter::MAI
const MCAsmInfo * MAI
Target Asm Printer information.
Definition: AsmPrinter.h:88
llvm::DIEValue
Definition: DIE.h:369
llvm::DIEUnit
Represents a compile or type unit.
Definition: DIE.h:880
llvm::DIE::print
void print(raw_ostream &O, unsigned IndentCount=0) const
Definition: DIE.cpp:247
llvm::DIEAbbrevSet::uniqueAbbreviation
DIEAbbrev & uniqueAbbreviation(DIE &Die)
Generate the abbreviation declaration for a DIE and return a pointer to the generated abbreviation.
Definition: DIE.cpp:146
llvm::dwarf::Form
Form
Definition: Dwarf.h:131
llvm::DIEAddrOffset::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit label value.
Definition: DIE.cpp:868
ErrorHandling.h
llvm::AsmPrinter::emitSLEB128
void emitSLEB128(int64_t Value, const char *Desc=nullptr) const
Emit the specified signed leb128 value.
Definition: AsmPrinterDwarf.cpp:40
llvm::DIEUnit::getCrossSectionRelativeBaseAddress
virtual const MCSymbol * getCrossSectionRelativeBaseAddress() const
Definition: DIE.h:909
llvm::DIEDelta::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
SizeOf - Determine size of delta value in bytes.
Definition: DIE.cpp:552
llvm::DIELoc::sizeOf
unsigned sizeOf(const dwarf::FormParams &, dwarf::Form Form) const
sizeOf - Determine size of location data in bytes.
Definition: DIE.cpp:746
llvm::DIE::getUnitDie
const DIE * getUnitDie() const
Climb up the parent chain to get the compile unit or type unit DIE that this DIE belongs to.
Definition: DIE.cpp:203
llvm::getULEB128Size
unsigned getULEB128Size(uint64_t Value)
Utility function to get the size of the ULEB128-encoded value.
Definition: LEB128.cpp:19
llvm::Type
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
llvm::dwarf::FormParams::AddrSize
uint8_t AddrSize
Definition: Dwarf.h:650
llvm::DIEAbbrevData::getAttribute
dwarf::Attribute getAttribute() const
Accessors.
Definition: DIE.h:67
llvm::Optional< uint8_t >
llvm::DIEBlock::computeSize
unsigned computeSize(const dwarf::FormParams &FormParams) const
Calculate the size of the location expression.
Definition: DIE.cpp:767
Offset
uint64_t Offset
Definition: ELFObjHandler.cpp:80
llvm::DIEAbbrev::AddAttribute
void AddAttribute(dwarf::Attribute Attribute, dwarf::Form Form)
Adds another set of attribute information to the abbreviation.
Definition: DIE.h:109
llvm::DIE
A structured debug information entry.
Definition: DIE.h:739
llvm::DIEBlock::sizeOf
unsigned sizeOf(const dwarf::FormParams &, dwarf::Form Form) const
sizeOf - Determine size of block data in bytes.
Definition: DIE.cpp:798
llvm::AsmPrinter::emitLabelReference
void emitLabelReference(const MCSymbol *Label, unsigned Size, bool IsSectionRelative=false) const
Emit something like ".long Label" where the size in bytes of the directive is specified by Size and L...
Definition: AsmPrinter.h:600
llvm::DIE::getTag
dwarf::Tag getTag() const
Definition: DIE.h:775
llvm::dwarf::Tag
Tag
Definition: Dwarf.h:104
llvm::DIEEntry::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit debug information entry offset.
Definition: DIE.cpp:654
Format.h
llvm::DIEDelta::print
void print(raw_ostream &O) const
Definition: DIE.cpp:567
llvm::dwarf::FormParams::Format
DwarfFormat Format
Definition: Dwarf.h:651
llvm::DIE::computeOffsetsAndAbbrevs
unsigned computeOffsetsAndAbbrevs(const dwarf::FormParams &FormParams, DIEAbbrevSet &AbbrevSet, unsigned CUOffset)
Compute the offset of this DIE and all its children.
Definition: DIE.cpp:277
p
the resulting code requires compare and branches when and if * p
Definition: README.txt:396
LLVM_DEBUG
#define LLVM_DEBUG(X)
Definition: Debug.h:101
llvm::dwarf::Attribute
Attribute
Attributes.
Definition: Dwarf.h:124
llvm::DIEAbbrev::AddImplicitConstAttribute
void AddImplicitConstAttribute(dwarf::Attribute Attribute, int64_t Value)
Adds attribute with DW_FORM_implicit_const value.
Definition: DIE.h:114
llvm::DIEInlineString::sizeOf
unsigned sizeOf(const dwarf::FormParams &, dwarf::Form) const
Definition: DIE.cpp:638
llvm::DIELocList::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit label value.
Definition: DIE.cpp:843
llvm::DIEValueList::values
value_range values()
Definition: DIE.h:727
llvm::dbgs
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163
llvm::ARMBuildAttrs::Section
@ Section
Legacy Tags.
Definition: ARMBuildAttributes.h:82
llvm::DIEValue::dump
void dump() const
Definition: DIE.cpp:365
FormattedStream.h
llvm::DIEAbbrev
Dwarf abbreviation, describes the organization of a debug information object.
Definition: DIE.h:79
llvm::DIEExpr::print
void print(raw_ostream &O) const
Definition: DIE.cpp:486
MD5.h
llvm::AsmPrinter::OutStreamer
std::unique_ptr< MCStreamer > OutStreamer
This is the MCStreamer object for the file we are generating.
Definition: AsmPrinter.h:97
Twine.h
MCContext.h
llvm::DIEAbbrev::Emit
void Emit(const AsmPrinter *AP) const
Print the abbreviation using the specified asm printer.
Definition: DIE.cpp:68
MCSymbol.h
llvm::DIEBaseTypeRef::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit base type reference.
Definition: DIE.cpp:526
llvm::DIEInlineString::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
Definition: DIE.cpp:629
llvm::DIE::dump
void dump() const
Definition: DIE.cpp:272
llvm::DIEAbbrevData
Dwarf abbreviation data, describes one attribute of a Dwarf abbreviation.
Definition: DIE.h:49
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:53
llvm::DIELabel::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
sizeOf - Determine size of label value in bytes.
Definition: DIE.cpp:502
llvm::DIEAbbrevSet::~DIEAbbrevSet
~DIEAbbrevSet()
Definition: DIE.cpp:141
llvm::DIEInteger
An integer value DIE.
Definition: DIE.h:163
llvm::MCSymbol::getName
StringRef getName() const
getName - Get the symbol name.
Definition: MCSymbol.h:198
llvm::DIEAbbrevSet::Emit
void Emit(const AsmPrinter *AP, MCSection *Section) const
Print all abbreviations using the specified asm printer.
Definition: DIE.cpp:170
DwarfDebug.h
llvm::AsmPrinter::emitDwarfAbbrevs
void emitDwarfAbbrevs(const T &Abbrevs) const
Emit Dwarf abbreviation table.
Definition: AsmPrinter.h:687
llvm::DIELocList::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
Definition: DIE.cpp:819
llvm::AsmPrinter::emitDwarfSymbolReference
void emitDwarfSymbolReference(const MCSymbol *Label, bool ForceOffset=false) const
Emit a reference to a symbol for use in dwarf.
Definition: AsmPrinterDwarf.cpp:158
llvm::DIEEntry::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
Definition: DIE.cpp:687
llvm::AsmPrinter::emitInt8
void emitInt8(int Value) const
Emit a byte directive and value.
Definition: AsmPrinter.cpp:2431
llvm::DIEAbbrevData::Profile
void Profile(FoldingSetNodeID &ID) const
Used to gather unique data for the abbreviation folding set.
Definition: DIE.cpp:42
llvm::DIEBaseTypeRef::print
void print(raw_ostream &O) const
Definition: DIE.cpp:537
llvm::DIE::getDebugSectionOffset
uint64_t getDebugSectionOffset() const
Get the absolute offset within the .debug_info or .debug_types section for this DIE.
Definition: DIE.cpp:197
llvm::DwarfStringPoolEntryRef::getString
StringRef getString() const
Definition: DwarfStringPoolEntry.h:57
llvm::DIE::setSize
void setSize(unsigned S)
Definition: DIE.h:851
llvm::dwarf::FormEncodingString
StringRef FormEncodingString(unsigned Encoding)
Definition: Dwarf.cpp:105
DIE.h
llvm::DIELocList::print
void print(raw_ostream &O) const
Definition: DIE.cpp:854
llvm::DIEExpr::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit expression value.
Definition: DIE.cpp:465
llvm::DIELoc::emitValue
void emitValue(const AsmPrinter *Asm, dwarf::Form Form) const
EmitValue - Emit location data.
Definition: DIE.cpp:728
llvm::DIE::generateAbbrev
DIEAbbrev generateAbbrev() const
Generate the abbreviation for this DIE.
Definition: DIE.cpp:186
llvm::DIEUnit::DIEUnit
DIEUnit(dwarf::Tag UnitTag)
Definition: DIE.cpp:317
llvm::DIEString::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit string value.
Definition: DIE.cpp:577
llvm::DIEDelta::emitValue
void emitValue(const AsmPrinter *AP, dwarf::Form Form) const
EmitValue - Emit delta value.
Definition: DIE.cpp:545
llvm::DIEString::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
sizeOf - Determine size of delta value in bytes.
Definition: DIE.cpp:601
llvm::RISCVFenceField::O
@ O
Definition: RISCVBaseInfo.h:206
llvm::DIEBlock::emitValue
void emitValue(const AsmPrinter *Asm, dwarf::Form Form) const
EmitValue - Emit block data.
Definition: DIE.cpp:778
llvm::DwarfDebug
Collects and handles dwarf debug information.
Definition: DwarfDebug.h:296
llvm::AsmPrinter::emitLabelPlusOffset
void emitLabelPlusOffset(const MCSymbol *Label, uint64_t Offset, unsigned Size, bool IsSectionRelative=false) const
Emit something like ".long Label+Offset" where the size in bytes of the directive is specified by Siz...
Definition: AsmPrinter.cpp:2455
uint64_t
Addr
uint64_t Addr
Definition: ELFObjHandler.cpp:79
llvm::dwarf::FormParams::DwarfUsesRelocationsAcrossSections
bool DwarfUsesRelocationsAcrossSections
True if DWARF v2 output generally uses relocations for references to other .debug_* sections.
Definition: Dwarf.h:654
LEB128.h
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::DwarfDebug::useSplitDwarf
bool useSplitDwarf() const
Returns whether or not to change the current debug info for the split dwarf proposal support.
Definition: DwarfDebug.h:750
I
#define I(x, y, z)
Definition: MD5.cpp:58
llvm::DIE::getParent
DIE * getParent() const
Definition: DIE.cpp:182
llvm::DwarfStringPoolEntryRef::getOffset
uint64_t getOffset() const
Definition: DwarfStringPoolEntry.h:50
llvm::dwarf::FormParams
A helper struct providing information about the byte size of DW_FORM values that vary in size dependi...
Definition: Dwarf.h:648
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::dwarf::FormParams::getDwarfOffsetByteSize
uint8_t getDwarfOffsetByteSize() const
The size of a reference is determined by the DWARF 32/64-bit format.
Definition: Dwarf.h:666
llvm::DIEInteger::emitValue
void emitValue(const AsmPrinter *Asm, dwarf::Form Form) const
EmitValue - Emit integer of appropriate size.
Definition: DIE.cpp:376
llvm::DIEValue::emitValue
void emitValue(const AsmPrinter *AP) const
Emit value via the Dwarf writer.
Definition: DIE.cpp:327
llvm::DIEEntry::print
void print(raw_ostream &O) const
Definition: DIE.cpp:709
llvm::AsmPrinter::emitDebugValue
virtual void emitDebugValue(const MCExpr *Value, unsigned Size) const
Emit the directive and value for debug thread local expression.
Definition: AsmPrinter.cpp:709
llvm::DIEAbbrev::hasChildren
bool hasChildren() const
Definition: DIE.h:102
printValues
static LLVM_DUMP_METHOD void printValues(raw_ostream &O, const DIEValueList &Values, StringRef Type, unsigned Size, unsigned IndentCount)
Definition: DIE.cpp:231
llvm::DwarfDebug::getDebugLocs
const DebugLocStream & getDebugLocs() const
Returns the entries for the .debug_loc section.
Definition: DwarfDebug.h:789
llvm::DIEBaseTypeRef::sizeOf
unsigned sizeOf(const dwarf::FormParams &, dwarf::Form) const
sizeOf - Determine size of the base type reference in bytes.
Definition: DIE.cpp:532
MCAsmInfo.h
DataLayout.h
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:57
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:134
llvm::DIE::children
child_range children()
Definition: DIE.h:795
llvm::MCSection
Instances of this class represent a uniqued identifier for a section in the current translation unit.
Definition: MCSection.h:39
llvm::FoldingSetNodeID
FoldingSetNodeID - This class is used to gather all the unique data bits of a node.
Definition: FoldingSet.h:313
llvm::MCAsmInfo::doesDwarfUseRelocationsAcrossSections
bool doesDwarfUseRelocationsAcrossSections() const
Definition: MCAsmInfo.h:784
DwarfCompileUnit.h
llvm::format
format_object< Ts... > format(const char *Fmt, const Ts &... Vals)
These are helper functions used to produce formatted output.
Definition: Format.h:124
llvm::dwarf::ChildrenString
StringRef ChildrenString(unsigned Children)
Definition: Dwarf.cpp:62
llvm::DIEValue::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams) const
Return the size of a value in bytes.
Definition: DIE.cpp:339
llvm::DIEInteger::print
void print(raw_ostream &O) const
Definition: DIE.cpp:454
llvm::getSLEB128Size
unsigned getSLEB128Size(int64_t Value)
Utility function to get the size of the SLEB128-encoded value.
Definition: LEB128.cpp:29
llvm::dwarf::getFixedFormByteSize
Optional< uint8_t > getFixedFormByteSize(dwarf::Form Form, FormParams Params)
Get the fixed byte size for a given form.
Definition: Dwarf.cpp:694
llvm::StringRef::size
constexpr LLVM_NODISCARD size_t size() const
size - Get the string size.
Definition: StringRef.h:156
llvm::DIELabel::print
void print(raw_ostream &O) const
Definition: DIE.cpp:520
llvm::DIE::getUnit
DIEUnit * getUnit() const
Climb up the parent chain to get the compile unit or type unit that this DIE belongs to.
Definition: DIE.cpp:214
llvm::DwarfStringPoolEntryRef::getSymbol
MCSymbol * getSymbol() const
Definition: DwarfStringPoolEntry.h:46
llvm::DIEBlock::print
void print(raw_ostream &O) const
Definition: DIE.cpp:811
llvm::DwarfStringPoolEntryRef::getIndex
unsigned getIndex() const
Definition: DwarfStringPoolEntry.h:52
llvm::DIEAbbrev::dump
void dump() const
Definition: DIE.cpp:132
llvm::AsmPrinter::getDwarfVersion
uint16_t getDwarfVersion() const
Definition: AsmPrinter.cpp:3635
DwarfUnit.h
llvm::DIEAbbrevSet
Helps unique DIEAbbrev objects and assigns abbreviation numbers.
Definition: DIE.h:135
llvm::AsmPrinter
This class is intended to be used as a driving class for all asm writers.
Definition: AsmPrinter.h:82
llvm::DIELoc::computeSize
unsigned computeSize(const dwarf::FormParams &FormParams) const
Calculate the size of the location expression.
Definition: DIE.cpp:717
llvm::DIEValue::isNone
@ isNone
Definition: DIE.h:372
llvm::dwarf::isValidFormForVersion
bool isValidFormForVersion(Form F, unsigned Version, bool ExtensionsOk=true)
Tells whether the specified form is defined in the specified version, or is an extension if extension...
Definition: Dwarf.cpp:781
llvm::DIE::getAbbrevNumber
unsigned getAbbrevNumber() const
Definition: DIE.h:774
llvm::DIE::findAttribute
DIEValue findAttribute(dwarf::Attribute Attribute) const
Find a value in the DIE with the attribute given.
Definition: DIE.cpp:221
N
#define N
MCStreamer.h
llvm::DIELoc::print
void print(raw_ostream &O) const
Definition: DIE.cpp:759
llvm::DIE::hasChildren
bool hasChildren() const
Definition: DIE.h:787
llvm::StringRef::data
const LLVM_NODISCARD char * data() const
data - Get a pointer to the start of the string (which may not be null terminated).
Definition: StringRef.h:148
llvm::DIEAddrOffset::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
Definition: DIE.cpp:860
llvm::HexStyle::Asm
@ Asm
0ffh
Definition: MCInstPrinter.h:34
llvm::dwarf::DWARF64
@ DWARF64
Definition: Dwarf.h:92
llvm::DIEInteger::sizeOf
unsigned sizeOf(const dwarf::FormParams &FormParams, dwarf::Form Form) const
sizeOf - Determine size of integer value in bytes.
Definition: DIE.cpp:432
llvm::dwarf::TagString
StringRef TagString(unsigned Tag)
Definition: Dwarf.cpp:21
raw_ostream.h
llvm::DIE::getOffset
unsigned getOffset() const
Get the compile/type unit relative offset of this DIE.
Definition: DIE.h:777
llvm::DIEAbbrevData::getValue
int64_t getValue() const
Definition: DIE.h:69
llvm::DIEValueList
A list of DIE values.
Definition: DIE.h:662
llvm::DIEAddrOffset::print
void print(raw_ostream &O) const
Definition: DIE.cpp:874
llvm::DIE::setAbbrevNumber
void setAbbrevNumber(unsigned I)
Set the abbreviation number for this DIE.
Definition: DIE.h:811
CU
Definition: AArch64AsmBackend.cpp:504
llvm::DIELabel
A label DIE.
Definition: DIE.h:218
llvm::Value
LLVM Value Representation.
Definition: Value.h:74
Debug.h
llvm::DIEString::print
void print(raw_ostream &O) const
Definition: DIE.cpp:622
llvm::dwarf::AttributeString
StringRef AttributeString(unsigned Attribute)
Definition: Dwarf.cpp:72
llvm::DIEInlineString::print
void print(raw_ostream &O) const
Definition: DIE.cpp:644
llvm::AsmPrinter::getDwarfFormParams
dwarf::FormParams getDwarfFormParams() const
Returns information about the byte size of DW_FORM values.
Definition: AsmPrinter.cpp:3652
llvm::Intrinsic::ID
unsigned ID
Definition: TargetTransformInfo.h:38
llvm::dwarf::FormParams::getRefAddrByteSize
uint8_t getRefAddrByteSize() const
The definition of the size of form DW_FORM_ref_addr depends on the version.
Definition: Dwarf.h:659