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DWARFASTParserClang.cpp
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1 //===-- DWARFASTParserClang.cpp -------------------------------------------===//
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 #include <stdlib.h>
10 
11 #include "DWARFASTParserClang.h"
12 #include "DWARFDebugInfo.h"
13 #include "DWARFDeclContext.h"
14 #include "DWARFDefines.h"
15 #include "SymbolFileDWARF.h"
17 #include "SymbolFileDWARFDwo.h"
18 #include "UniqueDWARFASTType.h"
19 
24 #include "lldb/Core/Module.h"
25 #include "lldb/Core/Value.h"
26 #include "lldb/Host/Host.h"
28 #include "lldb/Symbol/Function.h"
29 #include "lldb/Symbol/ObjectFile.h"
30 #include "lldb/Symbol/SymbolFile.h"
31 #include "lldb/Symbol/TypeList.h"
32 #include "lldb/Symbol/TypeMap.h"
33 #include "lldb/Target/Language.h"
35 #include "lldb/Utility/Log.h"
37 
38 #include "llvm/Demangle/Demangle.h"
39 
40 #include "clang/AST/CXXInheritance.h"
41 #include "clang/AST/DeclCXX.h"
42 #include "clang/AST/DeclObjC.h"
43 #include "clang/AST/DeclTemplate.h"
44 
45 #include <map>
46 #include <memory>
47 #include <vector>
48 
49 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
50 
51 #ifdef ENABLE_DEBUG_PRINTF
52 #include <stdio.h>
53 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
54 #else
55 #define DEBUG_PRINTF(fmt, ...)
56 #endif
57 
58 using namespace lldb;
59 using namespace lldb_private;
61  : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {}
62 
64 
65 static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) {
66  switch (dwarf_accessibility) {
67  case DW_ACCESS_public:
68  return eAccessPublic;
69  case DW_ACCESS_private:
70  return eAccessPrivate;
71  case DW_ACCESS_protected:
72  return eAccessProtected;
73  default:
74  break;
75  }
76  return eAccessNone;
77 }
78 
79 static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) {
80  switch (decl_kind) {
81  case clang::Decl::CXXRecord:
82  case clang::Decl::ClassTemplateSpecialization:
83  return true;
84  default:
85  break;
86  }
87  return false;
88 }
89 
90 
93  m_clang_ast_importer_up = std::make_unique<ClangASTImporter>();
94  }
96 }
97 
98 /// Detect a forward declaration that is nested in a DW_TAG_module.
99 static bool IsClangModuleFwdDecl(const DWARFDIE &Die) {
100  if (!Die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0))
101  return false;
102  auto Parent = Die.GetParent();
103  while (Parent.IsValid()) {
104  if (Parent.Tag() == DW_TAG_module)
105  return true;
106  Parent = Parent.GetParent();
107  }
108  return false;
109 }
110 
112  if (die.IsValid()) {
113  DWARFDIE top_module_die;
114  // Now make sure this DIE is scoped in a DW_TAG_module tag and return true
115  // if so
116  for (DWARFDIE parent = die.GetParent(); parent.IsValid();
117  parent = parent.GetParent()) {
118  const dw_tag_t tag = parent.Tag();
119  if (tag == DW_TAG_module)
120  top_module_die = parent;
121  else if (tag == DW_TAG_compile_unit || tag == DW_TAG_partial_unit)
122  break;
123  }
124 
125  return top_module_die;
126  }
127  return DWARFDIE();
128 }
129 
130 static lldb::ModuleSP GetContainingClangModule(const DWARFDIE &die) {
131  if (die.IsValid()) {
132  DWARFDIE clang_module_die = GetContainingClangModuleDIE(die);
133 
134  if (clang_module_die) {
135  const char *module_name = clang_module_die.GetName();
136  if (module_name)
137  return die.GetDWARF()->GetExternalModule(
138  lldb_private::ConstString(module_name));
139  }
140  }
141  return lldb::ModuleSP();
142 }
143 
145  const DWARFDIE &die,
146  Log *log) {
147  ModuleSP clang_module_sp = GetContainingClangModule(die);
148  if (!clang_module_sp)
149  return TypeSP();
150 
151  // If this type comes from a Clang module, recursively look in the
152  // DWARF section of the .pcm file in the module cache. Clang
153  // generates DWO skeleton units as breadcrumbs to find them.
154  llvm::SmallVector<CompilerContext, 4> decl_context;
155  die.GetDeclContext(decl_context);
156  TypeMap pcm_types;
157 
158  // The type in the Clang module must have the same language as the current CU.
159  LanguageSet languages;
160  languages.Insert(SymbolFileDWARF::GetLanguage(*die.GetCU()));
161  llvm::DenseSet<SymbolFile *> searched_symbol_files;
162  clang_module_sp->GetSymbolFile()->FindTypes(decl_context, languages,
163  searched_symbol_files, pcm_types);
164  if (pcm_types.Empty()) {
165  // Since this type is defined in one of the Clang modules imported
166  // by this symbol file, search all of them. Instead of calling
167  // sym_file->FindTypes(), which would return this again, go straight
168  // to the imported modules.
169  auto &sym_file = die.GetCU()->GetSymbolFileDWARF();
170 
171  // Well-formed clang modules never form cycles; guard against corrupted
172  // ones by inserting the current file.
173  searched_symbol_files.insert(&sym_file);
174  sym_file.ForEachExternalModule(
175  *sc.comp_unit, searched_symbol_files, [&](Module &module) {
176  module.GetSymbolFile()->FindTypes(decl_context, languages,
177  searched_symbol_files, pcm_types);
178  return pcm_types.GetSize();
179  });
180  }
181 
182  if (!pcm_types.GetSize())
183  return TypeSP();
184 
185  // We found a real definition for this type in the Clang module, so lets use
186  // it and cache the fact that we found a complete type for this die.
187  TypeSP pcm_type_sp = pcm_types.GetTypeAtIndex(0);
188  if (!pcm_type_sp)
189  return TypeSP();
190 
191  lldb_private::CompilerType pcm_type = pcm_type_sp->GetForwardCompilerType();
193  GetClangASTImporter().CopyType(m_ast, pcm_type);
194 
195  if (!type)
196  return TypeSP();
197 
198  // Under normal operation pcm_type is a shallow forward declaration
199  // that gets completed later. This is necessary to support cyclic
200  // data structures. If, however, pcm_type is already complete (for
201  // example, because it was loaded for a different target before),
202  // the definition needs to be imported right away, too.
203  // Type::ResolveClangType() effectively ignores the ResolveState
204  // inside type_sp and only looks at IsDefined(), so it never calls
205  // ClangASTImporter::ASTImporterDelegate::ImportDefinitionTo(),
206  // which does extra work for Objective-C classes. This would result
207  // in only the forward declaration to be visible.
208  if (pcm_type.IsDefined())
209  GetClangASTImporter().RequireCompleteType(ClangUtil::GetQualType(type));
210 
211  SymbolFileDWARF *dwarf = die.GetDWARF();
212  TypeSP type_sp(new Type(die.GetID(), dwarf, pcm_type_sp->GetName(),
213  pcm_type_sp->GetByteSize(nullptr), nullptr,
215  &pcm_type_sp->GetDeclaration(), type,
216  Type::ResolveState::Forward,
218 
219  dwarf->GetTypeList().Insert(type_sp);
220  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
221  clang::TagDecl *tag_decl = TypeSystemClang::GetAsTagDecl(type);
222  if (tag_decl) {
223  LinkDeclContextToDIE(tag_decl, die);
224  } else {
225  clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(die);
226  if (defn_decl_ctx)
227  LinkDeclContextToDIE(defn_decl_ctx, die);
228  }
229 
230  return type_sp;
231 }
232 
234  bool started = TypeSystemClang::StartTagDeclarationDefinition(type);
235  lldbassert(started && "Unable to start a class type definition.");
236  TypeSystemClang::CompleteTagDeclarationDefinition(type);
237  const clang::TagDecl *td = ClangUtil::GetAsTagDecl(type);
238  auto &ts = llvm::cast<TypeSystemClang>(*type.GetTypeSystem());
239  ts.GetMetadata(td)->SetIsForcefullyCompleted();
240 }
241 
242 /// Complete a type from debug info, or mark it as forcefully completed if
243 /// there is no definition of the type in the current Module. Call this function
244 /// in contexts where the usual C++ rules require a type to be complete (base
245 /// class, member, etc.).
247  // Technically, enums can be incomplete too, but we don't handle those as they
248  // are emitted even under -flimit-debug-info.
249  if (!TypeSystemClang::IsCXXClassType(type))
250  return;
251 
252  if (type.GetCompleteType())
253  return;
254 
255  // No complete definition in this module. Mark the class as complete to
256  // satisfy local ast invariants, but make a note of the fact that
257  // it is not _really_ complete so we can later search for a definition in a
258  // different module.
259  // Since we provide layout assistance, layouts of types containing this class
260  // will be correct even if we are not able to find the definition elsewhere.
262 }
263 
264 /// This function serves a similar purpose as RequireCompleteType above, but it
265 /// avoids completing the type if it is not immediately necessary. It only
266 /// ensures we _can_ complete the type later.
268  ClangASTImporter &ast_importer,
269  clang::DeclContext *decl_ctx,
270  DWARFDIE die,
271  const char *type_name_cstr) {
272  auto *tag_decl_ctx = clang::dyn_cast<clang::TagDecl>(decl_ctx);
273  if (!tag_decl_ctx)
274  return; // Non-tag context are always ready.
275 
276  // We have already completed the type, or we have found its definition and are
277  // ready to complete it later (cf. ParseStructureLikeDIE).
278  if (tag_decl_ctx->isCompleteDefinition() || tag_decl_ctx->isBeingDefined())
279  return;
280 
281  // We reach this point of the tag was present in the debug info as a
282  // declaration only. If it was imported from another AST context (in the
283  // gmodules case), we can complete the type by doing a full import.
284 
285  // If this type was not imported from an external AST, there's nothing to do.
286  CompilerType type = ast.GetTypeForDecl(tag_decl_ctx);
287  if (type && ast_importer.CanImport(type)) {
288  auto qual_type = ClangUtil::GetQualType(type);
289  if (ast_importer.RequireCompleteType(qual_type))
290  return;
291  die.GetDWARF()->GetObjectFile()->GetModule()->ReportError(
292  "Unable to complete the Decl context for DIE '%s' at offset "
293  "0x%8.8x.\nPlease file a bug report.",
294  type_name_cstr ? type_name_cstr : "", die.GetOffset());
295  }
296 
297  // We don't have a type definition and/or the import failed. We must
298  // forcefully complete the type to avoid crashes.
300 }
301 
303  DWARFAttributes attributes;
304  size_t num_attributes = die.GetAttributes(attributes);
305  for (size_t i = 0; i < num_attributes; ++i) {
306  dw_attr_t attr = attributes.AttributeAtIndex(i);
307  DWARFFormValue form_value;
308  if (!attributes.ExtractFormValueAtIndex(i, form_value))
309  continue;
310  switch (attr) {
311  case DW_AT_abstract_origin:
312  abstract_origin = form_value;
313  break;
314 
315  case DW_AT_accessibility:
317  break;
318 
319  case DW_AT_artificial:
320  is_artificial = form_value.Boolean();
321  break;
322 
323  case DW_AT_bit_stride:
324  bit_stride = form_value.Unsigned();
325  break;
326 
327  case DW_AT_byte_size:
328  byte_size = form_value.Unsigned();
329  break;
330 
331  case DW_AT_byte_stride:
332  byte_stride = form_value.Unsigned();
333  break;
334 
335  case DW_AT_calling_convention:
336  calling_convention = form_value.Unsigned();
337  break;
338 
339  case DW_AT_containing_type:
340  containing_type = form_value;
341  break;
342 
343  case DW_AT_decl_file:
344  // die.GetCU() can differ if DW_AT_specification uses DW_FORM_ref_addr.
345  decl.SetFile(
346  attributes.CompileUnitAtIndex(i)->GetFile(form_value.Unsigned()));
347  break;
348  case DW_AT_decl_line:
349  decl.SetLine(form_value.Unsigned());
350  break;
351  case DW_AT_decl_column:
352  decl.SetColumn(form_value.Unsigned());
353  break;
354 
355  case DW_AT_declaration:
356  is_forward_declaration = form_value.Boolean();
357  break;
358 
359  case DW_AT_encoding:
360  encoding = form_value.Unsigned();
361  break;
362 
363  case DW_AT_enum_class:
364  is_scoped_enum = form_value.Boolean();
365  break;
366 
367  case DW_AT_explicit:
368  is_explicit = form_value.Boolean();
369  break;
370 
371  case DW_AT_external:
372  if (form_value.Unsigned())
373  storage = clang::SC_Extern;
374  break;
375 
376  case DW_AT_inline:
377  is_inline = form_value.Boolean();
378  break;
379 
380  case DW_AT_linkage_name:
381  case DW_AT_MIPS_linkage_name:
382  mangled_name = form_value.AsCString();
383  break;
384 
385  case DW_AT_name:
386  name.SetCString(form_value.AsCString());
387  break;
388 
389  case DW_AT_object_pointer:
390  object_pointer = form_value.Reference();
391  break;
392 
393  case DW_AT_signature:
394  signature = form_value;
395  break;
396 
397  case DW_AT_specification:
398  specification = form_value;
399  break;
400 
401  case DW_AT_type:
402  type = form_value;
403  break;
404 
405  case DW_AT_virtuality:
406  is_virtual = form_value.Boolean();
407  break;
408 
409  case DW_AT_APPLE_objc_complete_type:
410  is_complete_objc_class = form_value.Signed();
411  break;
412 
413  case DW_AT_APPLE_objc_direct:
414  is_objc_direct_call = true;
415  break;
416 
417  case DW_AT_APPLE_runtime_class:
418  class_language = (LanguageType)form_value.Signed();
419  break;
420 
421  case DW_AT_GNU_vector:
422  is_vector = form_value.Boolean();
423  break;
424  case DW_AT_export_symbols:
425  exports_symbols = form_value.Boolean();
426  break;
427  }
428  }
429 }
430 
431 static std::string GetUnitName(const DWARFDIE &die) {
432  if (DWARFUnit *unit = die.GetCU())
433  return unit->GetAbsolutePath().GetPath();
434  return "<missing DWARF unit path>";
435 }
436 
438  const DWARFDIE &die,
439  bool *type_is_new_ptr) {
440  if (type_is_new_ptr)
441  *type_is_new_ptr = false;
442 
443  if (!die)
444  return nullptr;
445 
446  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
448 
449  SymbolFileDWARF *dwarf = die.GetDWARF();
450  if (log) {
451  DWARFDIE context_die;
452  clang::DeclContext *context =
453  GetClangDeclContextContainingDIE(die, &context_die);
454 
455  dwarf->GetObjectFile()->GetModule()->LogMessage(
456  log,
457  "DWARFASTParserClang::ParseTypeFromDWARF "
458  "(die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
459  die.GetOffset(), static_cast<void *>(context), context_die.GetOffset(),
460  die.GetTagAsCString(), die.GetName());
461  }
462 
463  Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE());
464  if (type_ptr == DIE_IS_BEING_PARSED)
465  return nullptr;
466  if (type_ptr)
467  return type_ptr->shared_from_this();
468  // Set a bit that lets us know that we are currently parsing this
469  dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED;
470 
471  ParsedDWARFTypeAttributes attrs(die);
472 
473  if (DWARFDIE signature_die = attrs.signature.Reference()) {
474  if (TypeSP type_sp =
475  ParseTypeFromDWARF(sc, signature_die, type_is_new_ptr)) {
476  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
477  if (clang::DeclContext *decl_ctx =
478  GetCachedClangDeclContextForDIE(signature_die))
479  LinkDeclContextToDIE(decl_ctx, die);
480  return type_sp;
481  }
482  return nullptr;
483  }
484 
485  if (type_is_new_ptr)
486  *type_is_new_ptr = true;
487 
488  const dw_tag_t tag = die.Tag();
489 
490  TypeSP type_sp;
491 
492  switch (tag) {
493  case DW_TAG_typedef:
494  case DW_TAG_base_type:
495  case DW_TAG_pointer_type:
496  case DW_TAG_reference_type:
497  case DW_TAG_rvalue_reference_type:
498  case DW_TAG_const_type:
499  case DW_TAG_restrict_type:
500  case DW_TAG_volatile_type:
501  case DW_TAG_atomic_type:
502  case DW_TAG_unspecified_type: {
503  type_sp = ParseTypeModifier(sc, die, attrs);
504  break;
505  }
506 
507  case DW_TAG_structure_type:
508  case DW_TAG_union_type:
509  case DW_TAG_class_type: {
510  type_sp = ParseStructureLikeDIE(sc, die, attrs);
511  break;
512  }
513 
514  case DW_TAG_enumeration_type: {
515  type_sp = ParseEnum(sc, die, attrs);
516  break;
517  }
518 
519  case DW_TAG_inlined_subroutine:
520  case DW_TAG_subprogram:
521  case DW_TAG_subroutine_type: {
522  type_sp = ParseSubroutine(die, attrs);
523  break;
524  }
525  case DW_TAG_array_type: {
526  type_sp = ParseArrayType(die, attrs);
527  break;
528  }
529  case DW_TAG_ptr_to_member_type: {
530  type_sp = ParsePointerToMemberType(die, attrs);
531  break;
532  }
533  default:
534  dwarf->GetObjectFile()->GetModule()->ReportError(
535  "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and "
536  "attach the file at the start of this error message",
537  die.GetOffset(), tag, DW_TAG_value_to_name(tag));
538  break;
539  }
540 
541  // TODO: We should consider making the switch above exhaustive to simplify
542  // control flow in ParseTypeFromDWARF. Then, we could simply replace this
543  // return statement with a call to llvm_unreachable.
544  return UpdateSymbolContextScopeForType(sc, die, type_sp);
545 }
546 
547 lldb::TypeSP
549  const DWARFDIE &die,
550  ParsedDWARFTypeAttributes &attrs) {
551  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
553  SymbolFileDWARF *dwarf = die.GetDWARF();
554  const dw_tag_t tag = die.Tag();
555  LanguageType cu_language = SymbolFileDWARF::GetLanguage(*die.GetCU());
556  Type::ResolveState resolve_state = Type::ResolveState::Unresolved;
557  Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
558  TypeSP type_sp;
559  CompilerType clang_type;
560 
561  if (tag == DW_TAG_typedef) {
562  // DeclContext will be populated when the clang type is materialized in
563  // Type::ResolveCompilerType.
566  GetClangDeclContextContainingDIE(die, nullptr), die,
567  attrs.name.GetCString());
568 
569  if (attrs.type.IsValid()) {
570  // Try to parse a typedef from the (DWARF embedded in the) Clang
571  // module file first as modules can contain typedef'ed
572  // structures that have no names like:
573  //
574  // typedef struct { int a; } Foo;
575  //
576  // In this case we will have a structure with no name and a
577  // typedef named "Foo" that points to this unnamed
578  // structure. The name in the typedef is the only identifier for
579  // the struct, so always try to get typedefs from Clang modules
580  // if possible.
581  //
582  // The type_sp returned will be empty if the typedef doesn't
583  // exist in a module file, so it is cheap to call this function
584  // just to check.
585  //
586  // If we don't do this we end up creating a TypeSP that says
587  // this is a typedef to type 0x123 (the DW_AT_type value would
588  // be 0x123 in the DW_TAG_typedef), and this is the unnamed
589  // structure type. We will have a hard time tracking down an
590  // unnammed structure type in the module debug info, so we make
591  // sure we don't get into this situation by always resolving
592  // typedefs from the module.
593  const DWARFDIE encoding_die = attrs.type.Reference();
594 
595  // First make sure that the die that this is typedef'ed to _is_
596  // just a declaration (DW_AT_declaration == 1), not a full
597  // definition since template types can't be represented in
598  // modules since only concrete instances of templates are ever
599  // emitted and modules won't contain those
600  if (encoding_die &&
601  encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
602  type_sp = ParseTypeFromClangModule(sc, die, log);
603  if (type_sp)
604  return type_sp;
605  }
606  }
607  }
608 
609  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", die.GetID(),
610  DW_TAG_value_to_name(tag), type_name_cstr,
611  encoding_uid.Reference());
612 
613  switch (tag) {
614  default:
615  break;
616 
617  case DW_TAG_unspecified_type:
618  if (attrs.name == "nullptr_t" || attrs.name == "decltype(nullptr)") {
619  resolve_state = Type::ResolveState::Full;
620  clang_type = m_ast.GetBasicType(eBasicTypeNullPtr);
621  break;
622  }
623  // Fall through to base type below in case we can handle the type
624  // there...
625  LLVM_FALLTHROUGH;
626 
627  case DW_TAG_base_type:
628  resolve_state = Type::ResolveState::Full;
630  attrs.name.GetStringRef(), attrs.encoding,
631  attrs.byte_size.getValueOr(0) * 8);
632  break;
633 
634  case DW_TAG_pointer_type:
635  encoding_data_type = Type::eEncodingIsPointerUID;
636  break;
637  case DW_TAG_reference_type:
638  encoding_data_type = Type::eEncodingIsLValueReferenceUID;
639  break;
640  case DW_TAG_rvalue_reference_type:
641  encoding_data_type = Type::eEncodingIsRValueReferenceUID;
642  break;
643  case DW_TAG_typedef:
644  encoding_data_type = Type::eEncodingIsTypedefUID;
645  break;
646  case DW_TAG_const_type:
647  encoding_data_type = Type::eEncodingIsConstUID;
648  break;
649  case DW_TAG_restrict_type:
650  encoding_data_type = Type::eEncodingIsRestrictUID;
651  break;
652  case DW_TAG_volatile_type:
653  encoding_data_type = Type::eEncodingIsVolatileUID;
654  break;
655  case DW_TAG_atomic_type:
656  encoding_data_type = Type::eEncodingIsAtomicUID;
657  break;
658  }
659 
660  if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID ||
661  encoding_data_type == Type::eEncodingIsTypedefUID)) {
662  if (tag == DW_TAG_pointer_type) {
663  DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type);
664 
665  if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) {
666  // Blocks have a __FuncPtr inside them which is a pointer to a
667  // function of the proper type.
668 
669  for (DWARFDIE child_die = target_die.GetFirstChild();
670  child_die.IsValid(); child_die = child_die.GetSibling()) {
671  if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""),
672  "__FuncPtr")) {
673  DWARFDIE function_pointer_type =
674  child_die.GetReferencedDIE(DW_AT_type);
675 
676  if (function_pointer_type) {
677  DWARFDIE function_type =
678  function_pointer_type.GetReferencedDIE(DW_AT_type);
679 
680  bool function_type_is_new_pointer;
681  TypeSP lldb_function_type_sp = ParseTypeFromDWARF(
682  sc, function_type, &function_type_is_new_pointer);
683 
684  if (lldb_function_type_sp) {
685  clang_type = m_ast.CreateBlockPointerType(
686  lldb_function_type_sp->GetForwardCompilerType());
687  encoding_data_type = Type::eEncodingIsUID;
688  attrs.type.Clear();
689  resolve_state = Type::ResolveState::Full;
690  }
691  }
692 
693  break;
694  }
695  }
696  }
697  }
698 
699  if (cu_language == eLanguageTypeObjC ||
700  cu_language == eLanguageTypeObjC_plus_plus) {
701  if (attrs.name) {
702  if (attrs.name == "id") {
703  if (log)
704  dwarf->GetObjectFile()->GetModule()->LogMessage(
705  log,
706  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
707  "is Objective-C 'id' built-in type.",
708  die.GetOffset(), die.GetTagAsCString(), die.GetName());
709  clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
710  encoding_data_type = Type::eEncodingIsUID;
711  attrs.type.Clear();
712  resolve_state = Type::ResolveState::Full;
713  } else if (attrs.name == "Class") {
714  if (log)
715  dwarf->GetObjectFile()->GetModule()->LogMessage(
716  log,
717  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
718  "is Objective-C 'Class' built-in type.",
719  die.GetOffset(), die.GetTagAsCString(), die.GetName());
720  clang_type = m_ast.GetBasicType(eBasicTypeObjCClass);
721  encoding_data_type = Type::eEncodingIsUID;
722  attrs.type.Clear();
723  resolve_state = Type::ResolveState::Full;
724  } else if (attrs.name == "SEL") {
725  if (log)
726  dwarf->GetObjectFile()->GetModule()->LogMessage(
727  log,
728  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
729  "is Objective-C 'selector' built-in type.",
730  die.GetOffset(), die.GetTagAsCString(), die.GetName());
731  clang_type = m_ast.GetBasicType(eBasicTypeObjCSel);
732  encoding_data_type = Type::eEncodingIsUID;
733  attrs.type.Clear();
734  resolve_state = Type::ResolveState::Full;
735  }
736  } else if (encoding_data_type == Type::eEncodingIsPointerUID &&
737  attrs.type.IsValid()) {
738  // Clang sometimes erroneously emits id as objc_object*. In that
739  // case we fix up the type to "id".
740 
741  const DWARFDIE encoding_die = attrs.type.Reference();
742 
743  if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) {
744  llvm::StringRef struct_name = encoding_die.GetName();
745  if (struct_name == "objc_object") {
746  if (log)
747  dwarf->GetObjectFile()->GetModule()->LogMessage(
748  log,
749  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s "
750  "'%s' is 'objc_object*', which we overrode to "
751  "'id'.",
752  die.GetOffset(), die.GetTagAsCString(), die.GetName());
753  clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
754  encoding_data_type = Type::eEncodingIsUID;
755  attrs.type.Clear();
756  resolve_state = Type::ResolveState::Full;
757  }
758  }
759  }
760  }
761  }
762 
763  type_sp = std::make_shared<Type>(
764  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
765  dwarf->GetUID(attrs.type.Reference()), encoding_data_type, &attrs.decl,
766  clang_type, resolve_state, TypePayloadClang(GetOwningClangModule(die)));
767 
768  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
769  return type_sp;
770 }
771 
773  const DWARFDIE &die,
774  ParsedDWARFTypeAttributes &attrs) {
775  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
777  SymbolFileDWARF *dwarf = die.GetDWARF();
778  const dw_tag_t tag = die.Tag();
779  TypeSP type_sp;
780 
781  if (attrs.is_forward_declaration) {
782  type_sp = ParseTypeFromClangModule(sc, die, log);
783  if (type_sp)
784  return type_sp;
785 
787 
788  type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
789 
790  if (!type_sp) {
791  SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile();
792  if (debug_map_symfile) {
793  // We weren't able to find a full declaration in this DWARF,
794  // see if we have a declaration anywhere else...
795  type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
796  die_decl_ctx);
797  }
798  }
799 
800  if (type_sp) {
801  if (log) {
802  dwarf->GetObjectFile()->GetModule()->LogMessage(
803  log,
804  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
805  "forward declaration, complete type is 0x%8.8" PRIx64,
806  static_cast<void *>(this), die.GetOffset(),
807  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
808  type_sp->GetID());
809  }
810 
811  // We found a real definition for this type elsewhere so lets use
812  // it and cache the fact that we found a complete type for this
813  // die
814  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
815  clang::DeclContext *defn_decl_ctx =
816  GetCachedClangDeclContextForDIE(dwarf->GetDIE(type_sp->GetID()));
817  if (defn_decl_ctx)
818  LinkDeclContextToDIE(defn_decl_ctx, die);
819  return type_sp;
820  }
821  }
822  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
823  DW_TAG_value_to_name(tag), type_name_cstr);
824 
825  CompilerType enumerator_clang_type;
826  CompilerType clang_type;
827  clang_type.SetCompilerType(
828  &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
829  if (!clang_type) {
830  if (attrs.type.IsValid()) {
831  Type *enumerator_type =
832  dwarf->ResolveTypeUID(attrs.type.Reference(), true);
833  if (enumerator_type)
834  enumerator_clang_type = enumerator_type->GetFullCompilerType();
835  }
836 
837  if (!enumerator_clang_type) {
838  if (attrs.byte_size) {
839  enumerator_clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(
840  "", DW_ATE_signed, *attrs.byte_size * 8);
841  } else {
842  enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt);
843  }
844  }
845 
846  clang_type = m_ast.CreateEnumerationType(
847  attrs.name.GetCString(), GetClangDeclContextContainingDIE(die, nullptr),
848  GetOwningClangModule(die), attrs.decl, enumerator_clang_type,
849  attrs.is_scoped_enum);
850  } else {
851  enumerator_clang_type = m_ast.GetEnumerationIntegerType(clang_type);
852  }
853 
854  LinkDeclContextToDIE(TypeSystemClang::GetDeclContextForType(clang_type), die);
855 
856  type_sp = std::make_shared<Type>(
857  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
858  dwarf->GetUID(attrs.type.Reference()), Type::eEncodingIsUID, &attrs.decl,
859  clang_type, Type::ResolveState::Forward,
861 
862  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
863  if (die.HasChildren()) {
864  bool is_signed = false;
865  enumerator_clang_type.IsIntegerType(is_signed);
866  ParseChildEnumerators(clang_type, is_signed,
867  type_sp->GetByteSize(nullptr).getValueOr(0), die);
868  }
869  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
870  } else {
871  dwarf->GetObjectFile()->GetModule()->ReportError(
872  "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
873  "definition.\nPlease file a bug and attach the file at the "
874  "start of this error message",
875  die.GetOffset(), attrs.name.GetCString());
876  }
877  return type_sp;
878 }
879 
881  ParsedDWARFTypeAttributes &attrs) {
882  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
884 
885  SymbolFileDWARF *dwarf = die.GetDWARF();
886  const dw_tag_t tag = die.Tag();
887 
888  bool is_variadic = false;
889  bool is_static = false;
890  bool has_template_params = false;
891 
892  unsigned type_quals = 0;
893 
894  std::string object_pointer_name;
895  if (attrs.object_pointer) {
896  const char *object_pointer_name_cstr = attrs.object_pointer.GetName();
897  if (object_pointer_name_cstr)
898  object_pointer_name = object_pointer_name_cstr;
899  }
900 
901  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
902  DW_TAG_value_to_name(tag), type_name_cstr);
903 
904  CompilerType return_clang_type;
905  Type *func_type = NULL;
906 
907  if (attrs.type.IsValid())
908  func_type = dwarf->ResolveTypeUID(attrs.type.Reference(), true);
909 
910  if (func_type)
911  return_clang_type = func_type->GetForwardCompilerType();
912  else
913  return_clang_type = m_ast.GetBasicType(eBasicTypeVoid);
914 
915  std::vector<CompilerType> function_param_types;
916  std::vector<clang::ParmVarDecl *> function_param_decls;
917 
918  // Parse the function children for the parameters
919 
920  DWARFDIE decl_ctx_die;
921  clang::DeclContext *containing_decl_ctx =
922  GetClangDeclContextContainingDIE(die, &decl_ctx_die);
923  const clang::Decl::Kind containing_decl_kind =
924  containing_decl_ctx->getDeclKind();
925 
926  bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind);
927  // Start off static. This will be set to false in
928  // ParseChildParameters(...) if we find a "this" parameters as the
929  // first parameter
930  if (is_cxx_method) {
931  is_static = true;
932  }
933 
934  if (die.HasChildren()) {
935  bool skip_artificial = true;
936  ParseChildParameters(containing_decl_ctx, die, skip_artificial, is_static,
937  is_variadic, has_template_params,
938  function_param_types, function_param_decls,
939  type_quals);
940  }
941 
942  bool ignore_containing_context = false;
943  // Check for templatized class member functions. If we had any
944  // DW_TAG_template_type_parameter or DW_TAG_template_value_parameter
945  // the DW_TAG_subprogram DIE, then we can't let this become a method in
946  // a class. Why? Because templatized functions are only emitted if one
947  // of the templatized methods is used in the current compile unit and
948  // we will end up with classes that may or may not include these member
949  // functions and this means one class won't match another class
950  // definition and it affects our ability to use a class in the clang
951  // expression parser. So for the greater good, we currently must not
952  // allow any template member functions in a class definition.
953  if (is_cxx_method && has_template_params) {
954  ignore_containing_context = true;
955  is_cxx_method = false;
956  }
957 
958  // clang_type will get the function prototype clang type after this
959  // call
961  return_clang_type, function_param_types.data(),
962  function_param_types.size(), is_variadic, type_quals);
963 
964  if (attrs.name) {
965  bool type_handled = false;
966  if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) {
967  ObjCLanguage::MethodName objc_method(attrs.name.GetStringRef(), true);
968  if (objc_method.IsValid(true)) {
969  CompilerType class_opaque_type;
970  ConstString class_name(objc_method.GetClassName());
971  if (class_name) {
972  TypeSP complete_objc_class_type_sp(
973  dwarf->FindCompleteObjCDefinitionTypeForDIE(DWARFDIE(),
974  class_name, false));
975 
976  if (complete_objc_class_type_sp) {
977  CompilerType type_clang_forward_type =
978  complete_objc_class_type_sp->GetForwardCompilerType();
979  if (TypeSystemClang::IsObjCObjectOrInterfaceType(
980  type_clang_forward_type))
981  class_opaque_type = type_clang_forward_type;
982  }
983  }
984 
985  if (class_opaque_type) {
986  // If accessibility isn't set to anything valid, assume public
987  // for now...
988  if (attrs.accessibility == eAccessNone)
990 
991  clang::ObjCMethodDecl *objc_method_decl =
993  class_opaque_type, attrs.name.GetCString(), clang_type,
994  attrs.accessibility, attrs.is_artificial, is_variadic,
995  attrs.is_objc_direct_call);
996  type_handled = objc_method_decl != NULL;
997  if (type_handled) {
998  LinkDeclContextToDIE(objc_method_decl, die);
999  m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID());
1000  } else {
1001  dwarf->GetObjectFile()->GetModule()->ReportError(
1002  "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), "
1003  "please file a bug and attach the file at the start of "
1004  "this error message",
1005  die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1006  }
1007  }
1008  } else if (is_cxx_method) {
1009  // Look at the parent of this DIE and see if is is a class or
1010  // struct and see if this is actually a C++ method
1011  Type *class_type = dwarf->ResolveType(decl_ctx_die);
1012  if (class_type) {
1013  bool alternate_defn = false;
1014  if (class_type->GetID() != decl_ctx_die.GetID() ||
1015  IsClangModuleFwdDecl(decl_ctx_die)) {
1016  alternate_defn = true;
1017 
1018  // We uniqued the parent class of this function to another
1019  // class so we now need to associate all dies under
1020  // "decl_ctx_die" to DIEs in the DIE for "class_type"...
1021  DWARFDIE class_type_die = dwarf->GetDIE(class_type->GetID());
1022 
1023  if (class_type_die) {
1024  std::vector<DWARFDIE> failures;
1025 
1026  CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die,
1027  class_type, failures);
1028 
1029  // FIXME do something with these failures that's
1030  // smarter than just dropping them on the ground.
1031  // Unfortunately classes don't like having stuff added
1032  // to them after their definitions are complete...
1033 
1034  Type *type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1035  if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) {
1036  return type_ptr->shared_from_this();
1037  }
1038  }
1039  }
1040 
1041  if (attrs.specification.IsValid()) {
1042  // We have a specification which we are going to base our
1043  // function prototype off of, so we need this type to be
1044  // completed so that the m_die_to_decl_ctx for the method in
1045  // the specification has a valid clang decl context.
1046  class_type->GetForwardCompilerType();
1047  // If we have a specification, then the function type should
1048  // have been made with the specification and not with this
1049  // die.
1050  DWARFDIE spec_die = attrs.specification.Reference();
1051  clang::DeclContext *spec_clang_decl_ctx =
1052  GetClangDeclContextForDIE(spec_die);
1053  if (spec_clang_decl_ctx) {
1054  LinkDeclContextToDIE(spec_clang_decl_ctx, die);
1055  } else {
1056  dwarf->GetObjectFile()->GetModule()->ReportWarning(
1057  "0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x"
1058  ") has no decl\n",
1059  die.GetID(), spec_die.GetOffset());
1060  }
1061  type_handled = true;
1062  } else if (attrs.abstract_origin.IsValid()) {
1063  // We have a specification which we are going to base our
1064  // function prototype off of, so we need this type to be
1065  // completed so that the m_die_to_decl_ctx for the method in
1066  // the abstract origin has a valid clang decl context.
1067  class_type->GetForwardCompilerType();
1068 
1069  DWARFDIE abs_die = attrs.abstract_origin.Reference();
1070  clang::DeclContext *abs_clang_decl_ctx =
1071  GetClangDeclContextForDIE(abs_die);
1072  if (abs_clang_decl_ctx) {
1073  LinkDeclContextToDIE(abs_clang_decl_ctx, die);
1074  } else {
1075  dwarf->GetObjectFile()->GetModule()->ReportWarning(
1076  "0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x"
1077  ") has no decl\n",
1078  die.GetID(), abs_die.GetOffset());
1079  }
1080  type_handled = true;
1081  } else {
1082  CompilerType class_opaque_type =
1083  class_type->GetForwardCompilerType();
1084  if (TypeSystemClang::IsCXXClassType(class_opaque_type)) {
1085  if (class_opaque_type.IsBeingDefined() || alternate_defn) {
1086  if (!is_static && !die.HasChildren()) {
1087  // We have a C++ member function with no children (this
1088  // pointer!) and clang will get mad if we try and make
1089  // a function that isn't well formed in the DWARF, so
1090  // we will just skip it...
1091  type_handled = true;
1092  } else {
1093  bool add_method = true;
1094  if (alternate_defn) {
1095  // If an alternate definition for the class exists,
1096  // then add the method only if an equivalent is not
1097  // already present.
1098  clang::CXXRecordDecl *record_decl =
1100  class_opaque_type.GetOpaqueQualType());
1101  if (record_decl) {
1102  for (auto method_iter = record_decl->method_begin();
1103  method_iter != record_decl->method_end();
1104  method_iter++) {
1105  clang::CXXMethodDecl *method_decl = *method_iter;
1106  if (method_decl->getNameInfo().getAsString() ==
1107  attrs.name.GetStringRef()) {
1108  if (method_decl->getType() ==
1109  ClangUtil::GetQualType(clang_type)) {
1110  add_method = false;
1111  LinkDeclContextToDIE(method_decl, die);
1112  type_handled = true;
1113 
1114  break;
1115  }
1116  }
1117  }
1118  }
1119  }
1120 
1121  if (add_method) {
1122  llvm::PrettyStackTraceFormat stack_trace(
1123  "SymbolFileDWARF::ParseType() is adding a method "
1124  "%s to class %s in DIE 0x%8.8" PRIx64 " from %s",
1125  attrs.name.GetCString(),
1126  class_type->GetName().GetCString(), die.GetID(),
1127  dwarf->GetObjectFile()
1128  ->GetFileSpec()
1129  .GetPath()
1130  .c_str());
1131 
1132  const bool is_attr_used = false;
1133  // Neither GCC 4.2 nor clang++ currently set a valid
1134  // accessibility in the DWARF for C++ methods...
1135  // Default to public for now...
1136  if (attrs.accessibility == eAccessNone)
1137  attrs.accessibility = eAccessPublic;
1138 
1139  clang::CXXMethodDecl *cxx_method_decl =
1141  class_opaque_type.GetOpaqueQualType(),
1142  attrs.name.GetCString(), attrs.mangled_name,
1143  clang_type, attrs.accessibility, attrs.is_virtual,
1144  is_static, attrs.is_inline, attrs.is_explicit,
1145  is_attr_used, attrs.is_artificial);
1146 
1147  type_handled = cxx_method_decl != NULL;
1148  // Artificial methods are always handled even when we
1149  // don't create a new declaration for them.
1150  type_handled |= attrs.is_artificial;
1151 
1152  if (cxx_method_decl) {
1153  LinkDeclContextToDIE(cxx_method_decl, die);
1154 
1155  ClangASTMetadata metadata;
1156  metadata.SetUserID(die.GetID());
1157 
1158  if (!object_pointer_name.empty()) {
1159  metadata.SetObjectPtrName(
1160  object_pointer_name.c_str());
1161  LLDB_LOGF(log,
1162  "Setting object pointer name: %s on method "
1163  "object %p.\n",
1164  object_pointer_name.c_str(),
1165  static_cast<void *>(cxx_method_decl));
1166  }
1167  m_ast.SetMetadata(cxx_method_decl, metadata);
1168  } else {
1169  ignore_containing_context = true;
1170  }
1171  }
1172  }
1173  } else {
1174  // We were asked to parse the type for a method in a
1175  // class, yet the class hasn't been asked to complete
1176  // itself through the clang::ExternalASTSource protocol,
1177  // so we need to just have the class complete itself and
1178  // do things the right way, then our
1179  // DIE should then have an entry in the
1180  // dwarf->GetDIEToType() map. First
1181  // we need to modify the dwarf->GetDIEToType() so it
1182  // doesn't think we are trying to parse this DIE
1183  // anymore...
1184  dwarf->GetDIEToType()[die.GetDIE()] = NULL;
1185 
1186  // Now we get the full type to force our class type to
1187  // complete itself using the clang::ExternalASTSource
1188  // protocol which will parse all base classes and all
1189  // methods (including the method for this DIE).
1190  class_type->GetFullCompilerType();
1191 
1192  // The type for this DIE should have been filled in the
1193  // function call above
1194  Type *type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1195  if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) {
1196  return type_ptr->shared_from_this();
1197  }
1198 
1199  // FIXME This is fixing some even uglier behavior but we
1200  // really need to
1201  // uniq the methods of each class as well as the class
1202  // itself. <rdar://problem/11240464>
1203  type_handled = true;
1204  }
1205  }
1206  }
1207  }
1208  }
1209  }
1210 
1211  if (!type_handled) {
1212  clang::FunctionDecl *function_decl = nullptr;
1213  clang::FunctionDecl *template_function_decl = nullptr;
1214 
1215  if (attrs.abstract_origin.IsValid()) {
1216  DWARFDIE abs_die = attrs.abstract_origin.Reference();
1217 
1218  if (dwarf->ResolveType(abs_die)) {
1219  function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(
1221 
1222  if (function_decl) {
1223  LinkDeclContextToDIE(function_decl, die);
1224  }
1225  }
1226  }
1227 
1228  if (!function_decl) {
1229  char *name_buf = nullptr;
1230  llvm::StringRef name = attrs.name.GetStringRef();
1231 
1232  // We currently generate function templates with template parameters in
1233  // their name. In order to get closer to the AST that clang generates
1234  // we want to strip these from the name when creating the AST.
1235  if (attrs.mangled_name) {
1236  llvm::ItaniumPartialDemangler D;
1237  if (!D.partialDemangle(attrs.mangled_name)) {
1238  name_buf = D.getFunctionBaseName(nullptr, nullptr);
1239  name = name_buf;
1240  }
1241  }
1242 
1243  // We just have a function that isn't part of a class
1244  function_decl = m_ast.CreateFunctionDeclaration(
1245  ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1246  : containing_decl_ctx,
1247  GetOwningClangModule(die), name, clang_type, attrs.storage,
1248  attrs.is_inline);
1249  std::free(name_buf);
1250 
1251  if (has_template_params) {
1252  TypeSystemClang::TemplateParameterInfos template_param_infos;
1253  ParseTemplateParameterInfos(die, template_param_infos);
1254  template_function_decl = m_ast.CreateFunctionDeclaration(
1255  ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1256  : containing_decl_ctx,
1257  GetOwningClangModule(die), attrs.name.GetStringRef(), clang_type,
1258  attrs.storage, attrs.is_inline);
1259  clang::FunctionTemplateDecl *func_template_decl =
1261  containing_decl_ctx, GetOwningClangModule(die),
1262  template_function_decl, template_param_infos);
1264  template_function_decl, func_template_decl, template_param_infos);
1265  }
1266 
1267  lldbassert(function_decl);
1268 
1269  if (function_decl) {
1270  LinkDeclContextToDIE(function_decl, die);
1271 
1272  if (!function_param_decls.empty()) {
1273  m_ast.SetFunctionParameters(function_decl,
1274  &function_param_decls.front(),
1275  function_param_decls.size());
1276  if (template_function_decl)
1277  m_ast.SetFunctionParameters(template_function_decl,
1278  &function_param_decls.front(),
1279  function_param_decls.size());
1280  }
1281 
1282  ClangASTMetadata metadata;
1283  metadata.SetUserID(die.GetID());
1284 
1285  if (!object_pointer_name.empty()) {
1286  metadata.SetObjectPtrName(object_pointer_name.c_str());
1287  LLDB_LOGF(log,
1288  "Setting object pointer name: %s on function "
1289  "object %p.",
1290  object_pointer_name.c_str(),
1291  static_cast<void *>(function_decl));
1292  }
1293  m_ast.SetMetadata(function_decl, metadata);
1294  }
1295  }
1296  }
1297  }
1298  return std::make_shared<Type>(
1299  die.GetID(), dwarf, attrs.name, llvm::None, nullptr, LLDB_INVALID_UID,
1300  Type::eEncodingIsUID, &attrs.decl, clang_type, Type::ResolveState::Full);
1301 }
1302 
1304  ParsedDWARFTypeAttributes &attrs) {
1305  SymbolFileDWARF *dwarf = die.GetDWARF();
1306 
1307  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1308  DW_TAG_value_to_name(tag), type_name_cstr);
1309 
1310  DWARFDIE type_die = attrs.type.Reference();
1311  Type *element_type = dwarf->ResolveTypeUID(type_die, true);
1312 
1313  if (!element_type)
1314  return nullptr;
1315 
1316  llvm::Optional<SymbolFile::ArrayInfo> array_info = ParseChildArrayInfo(die);
1317  if (array_info) {
1318  attrs.byte_stride = array_info->byte_stride;
1319  attrs.bit_stride = array_info->bit_stride;
1320  }
1321  if (attrs.byte_stride == 0 && attrs.bit_stride == 0)
1322  attrs.byte_stride = element_type->GetByteSize(nullptr).getValueOr(0);
1323  CompilerType array_element_type = element_type->GetForwardCompilerType();
1324  RequireCompleteType(array_element_type);
1325 
1326  uint64_t array_element_bit_stride =
1327  attrs.byte_stride * 8 + attrs.bit_stride;
1328  CompilerType clang_type;
1329  if (array_info && array_info->element_orders.size() > 0) {
1330  uint64_t num_elements = 0;
1331  auto end = array_info->element_orders.rend();
1332  for (auto pos = array_info->element_orders.rbegin(); pos != end; ++pos) {
1333  num_elements = *pos;
1334  clang_type = m_ast.CreateArrayType(array_element_type, num_elements,
1335  attrs.is_vector);
1336  array_element_type = clang_type;
1337  array_element_bit_stride = num_elements
1338  ? array_element_bit_stride * num_elements
1339  : array_element_bit_stride;
1340  }
1341  } else {
1342  clang_type =
1343  m_ast.CreateArrayType(array_element_type, 0, attrs.is_vector);
1344  }
1345  ConstString empty_name;
1346  TypeSP type_sp = std::make_shared<Type>(
1347  die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, nullptr,
1348  dwarf->GetUID(type_die), Type::eEncodingIsUID, &attrs.decl, clang_type,
1349  Type::ResolveState::Full);
1350  type_sp->SetEncodingType(element_type);
1351  const clang::Type *type = ClangUtil::GetQualType(clang_type).getTypePtr();
1352  m_ast.SetMetadataAsUserID(type, die.GetID());
1353  return type_sp;
1354 }
1355 
1357  const DWARFDIE &die, const ParsedDWARFTypeAttributes &attrs) {
1358  SymbolFileDWARF *dwarf = die.GetDWARF();
1359  Type *pointee_type = dwarf->ResolveTypeUID(attrs.type.Reference(), true);
1360  Type *class_type =
1361  dwarf->ResolveTypeUID(attrs.containing_type.Reference(), true);
1362 
1363  CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType();
1364  CompilerType class_clang_type = class_type->GetForwardCompilerType();
1365 
1366  CompilerType clang_type = TypeSystemClang::CreateMemberPointerType(
1367  class_clang_type, pointee_clang_type);
1368 
1369  if (llvm::Optional<uint64_t> clang_type_size =
1370  clang_type.GetByteSize(nullptr)) {
1371  return std::make_shared<Type>(die.GetID(), dwarf, attrs.name,
1372  *clang_type_size, nullptr, LLDB_INVALID_UID,
1373  Type::eEncodingIsUID, nullptr, clang_type,
1374  Type::ResolveState::Forward);
1375  }
1376  return nullptr;
1377 }
1378 
1380  const SymbolContext &sc, const DWARFDIE &die, TypeSP type_sp) {
1381  if (!type_sp)
1382  return type_sp;
1383 
1384  SymbolFileDWARF *dwarf = die.GetDWARF();
1385  TypeList &type_list = dwarf->GetTypeList();
1387  dw_tag_t sc_parent_tag = sc_parent_die.Tag();
1388 
1389  SymbolContextScope *symbol_context_scope = nullptr;
1390  if (sc_parent_tag == DW_TAG_compile_unit ||
1391  sc_parent_tag == DW_TAG_partial_unit) {
1392  symbol_context_scope = sc.comp_unit;
1393  } else if (sc.function != nullptr && sc_parent_die) {
1394  symbol_context_scope =
1395  sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID());
1396  if (symbol_context_scope == nullptr)
1397  symbol_context_scope = sc.function;
1398  } else {
1399  symbol_context_scope = sc.module_sp.get();
1400  }
1401 
1402  if (symbol_context_scope != nullptr)
1403  type_sp->SetSymbolContextScope(symbol_context_scope);
1404 
1405  // We are ready to put this type into the uniqued list up at the module
1406  // level.
1407  type_list.Insert(type_sp);
1408 
1409  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1410  return type_sp;
1411 }
1412 
1413 TypeSP
1415  const DWARFDIE &die,
1416  ParsedDWARFTypeAttributes &attrs) {
1417  TypeSP type_sp;
1418  CompilerType clang_type;
1419  const dw_tag_t tag = die.Tag();
1420  SymbolFileDWARF *dwarf = die.GetDWARF();
1421  LanguageType cu_language = SymbolFileDWARF::GetLanguage(*die.GetCU());
1422  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_TYPE_COMPLETION |
1424 
1425  // UniqueDWARFASTType is large, so don't create a local variables on the
1426  // stack, put it on the heap. This function is often called recursively and
1427  // clang isn't good at sharing the stack space for variables in different
1428  // blocks.
1429  auto unique_ast_entry_up = std::make_unique<UniqueDWARFASTType>();
1430 
1431  ConstString unique_typename(attrs.name);
1432  Declaration unique_decl(attrs.decl);
1433 
1434  if (attrs.name) {
1435  if (Language::LanguageIsCPlusPlus(cu_language)) {
1436  // For C++, we rely solely upon the one definition rule that says
1437  // only one thing can exist at a given decl context. We ignore the
1438  // file and line that things are declared on.
1439  std::string qualified_name;
1440  if (die.GetQualifiedName(qualified_name))
1441  unique_typename = ConstString(qualified_name);
1442  unique_decl.Clear();
1443  }
1444 
1445  if (dwarf->GetUniqueDWARFASTTypeMap().Find(
1446  unique_typename, die, unique_decl, attrs.byte_size.getValueOr(-1),
1447  *unique_ast_entry_up)) {
1448  type_sp = unique_ast_entry_up->m_type_sp;
1449  if (type_sp) {
1450  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1452  GetCachedClangDeclContextForDIE(unique_ast_entry_up->m_die), die);
1453  return type_sp;
1454  }
1455  }
1456  }
1457 
1458  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1459  DW_TAG_value_to_name(tag), type_name_cstr);
1460 
1461  int tag_decl_kind = -1;
1462  AccessType default_accessibility = eAccessNone;
1463  if (tag == DW_TAG_structure_type) {
1464  tag_decl_kind = clang::TTK_Struct;
1465  default_accessibility = eAccessPublic;
1466  } else if (tag == DW_TAG_union_type) {
1467  tag_decl_kind = clang::TTK_Union;
1468  default_accessibility = eAccessPublic;
1469  } else if (tag == DW_TAG_class_type) {
1470  tag_decl_kind = clang::TTK_Class;
1471  default_accessibility = eAccessPrivate;
1472  }
1473 
1474  if (attrs.byte_size && *attrs.byte_size == 0 && attrs.name &&
1475  !die.HasChildren() && cu_language == eLanguageTypeObjC) {
1476  // Work around an issue with clang at the moment where forward
1477  // declarations for objective C classes are emitted as:
1478  // DW_TAG_structure_type [2]
1479  // DW_AT_name( "ForwardObjcClass" )
1480  // DW_AT_byte_size( 0x00 )
1481  // DW_AT_decl_file( "..." )
1482  // DW_AT_decl_line( 1 )
1483  //
1484  // Note that there is no DW_AT_declaration and there are no children,
1485  // and the byte size is zero.
1486  attrs.is_forward_declaration = true;
1487  }
1488 
1489  if (attrs.class_language == eLanguageTypeObjC ||
1491  if (!attrs.is_complete_objc_class &&
1493  // We have a valid eSymbolTypeObjCClass class symbol whose name
1494  // matches the current objective C class that we are trying to find
1495  // and this DIE isn't the complete definition (we checked
1496  // is_complete_objc_class above and know it is false), so the real
1497  // definition is in here somewhere
1498  type_sp =
1499  dwarf->FindCompleteObjCDefinitionTypeForDIE(die, attrs.name, true);
1500 
1501  if (!type_sp) {
1502  SymbolFileDWARFDebugMap *debug_map_symfile =
1503  dwarf->GetDebugMapSymfile();
1504  if (debug_map_symfile) {
1505  // We weren't able to find a full declaration in this DWARF,
1506  // see if we have a declaration anywhere else...
1507  type_sp = debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE(
1508  die, attrs.name, true);
1509  }
1510  }
1511 
1512  if (type_sp) {
1513  if (log) {
1514  dwarf->GetObjectFile()->GetModule()->LogMessage(
1515  log,
1516  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an "
1517  "incomplete objc type, complete type is 0x%8.8" PRIx64,
1518  static_cast<void *>(this), die.GetOffset(),
1519  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
1520  type_sp->GetID());
1521  }
1522 
1523  // We found a real definition for this type elsewhere so lets use
1524  // it and cache the fact that we found a complete type for this
1525  // die
1526  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1527  return type_sp;
1528  }
1529  }
1530  }
1531 
1532  if (attrs.is_forward_declaration) {
1533  // We have a forward declaration to a type and we need to try and
1534  // find a full declaration. We look in the current type index just in
1535  // case we have a forward declaration followed by an actual
1536  // declarations in the DWARF. If this fails, we need to look
1537  // elsewhere...
1538  if (log) {
1539  dwarf->GetObjectFile()->GetModule()->LogMessage(
1540  log,
1541  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1542  "forward declaration, trying to find complete type",
1543  static_cast<void *>(this), die.GetOffset(), DW_TAG_value_to_name(tag),
1544  attrs.name.GetCString());
1545  }
1546 
1547  // See if the type comes from a Clang module and if so, track down
1548  // that type.
1549  type_sp = ParseTypeFromClangModule(sc, die, log);
1550  if (type_sp)
1551  return type_sp;
1552 
1554 
1555  // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die,
1556  // type_name_const_str);
1557  type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
1558 
1559  if (!type_sp) {
1560  SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile();
1561  if (debug_map_symfile) {
1562  // We weren't able to find a full declaration in this DWARF, see
1563  // if we have a declaration anywhere else...
1564  type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
1565  die_decl_ctx);
1566  }
1567  }
1568 
1569  if (type_sp) {
1570  if (log) {
1571  dwarf->GetObjectFile()->GetModule()->LogMessage(
1572  log,
1573  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1574  "forward declaration, complete type is 0x%8.8" PRIx64,
1575  static_cast<void *>(this), die.GetOffset(),
1576  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
1577  type_sp->GetID());
1578  }
1579 
1580  // We found a real definition for this type elsewhere so lets use
1581  // it and cache the fact that we found a complete type for this die
1582  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1583  clang::DeclContext *defn_decl_ctx =
1584  GetCachedClangDeclContextForDIE(dwarf->GetDIE(type_sp->GetID()));
1585  if (defn_decl_ctx)
1586  LinkDeclContextToDIE(defn_decl_ctx, die);
1587  return type_sp;
1588  }
1589  }
1590  assert(tag_decl_kind != -1);
1591  bool clang_type_was_created = false;
1592  clang_type.SetCompilerType(
1593  &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
1594  if (!clang_type) {
1595  clang::DeclContext *decl_ctx =
1596  GetClangDeclContextContainingDIE(die, nullptr);
1597 
1599  attrs.name.GetCString());
1600 
1601  if (attrs.accessibility == eAccessNone && decl_ctx) {
1602  // Check the decl context that contains this class/struct/union. If
1603  // it is a class we must give it an accessibility.
1604  const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
1605  if (DeclKindIsCXXClass(containing_decl_kind))
1606  attrs.accessibility = default_accessibility;
1607  }
1608 
1609  ClangASTMetadata metadata;
1610  metadata.SetUserID(die.GetID());
1611  metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die));
1612 
1613  if (attrs.name.GetStringRef().contains('<')) {
1614  TypeSystemClang::TemplateParameterInfos template_param_infos;
1615  if (ParseTemplateParameterInfos(die, template_param_infos)) {
1616  clang::ClassTemplateDecl *class_template_decl =
1618  decl_ctx, GetOwningClangModule(die), attrs.accessibility,
1619  attrs.name.GetCString(), tag_decl_kind, template_param_infos);
1620  if (!class_template_decl) {
1621  if (log) {
1622  dwarf->GetObjectFile()->GetModule()->LogMessage(
1623  log,
1624  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" "
1625  "clang::ClassTemplateDecl failed to return a decl.",
1626  static_cast<void *>(this), die.GetOffset(),
1627  DW_TAG_value_to_name(tag), attrs.name.GetCString());
1628  }
1629  return TypeSP();
1630  }
1631 
1632  clang::ClassTemplateSpecializationDecl *class_specialization_decl =
1634  decl_ctx, GetOwningClangModule(die), class_template_decl,
1635  tag_decl_kind, template_param_infos);
1637  class_specialization_decl);
1638  clang_type_was_created = true;
1639 
1640  m_ast.SetMetadata(class_template_decl, metadata);
1641  m_ast.SetMetadata(class_specialization_decl, metadata);
1642  }
1643  }
1644 
1645  if (!clang_type_was_created) {
1646  clang_type_was_created = true;
1647  clang_type = m_ast.CreateRecordType(
1648  decl_ctx, GetOwningClangModule(die), attrs.accessibility,
1649  attrs.name.GetCString(), tag_decl_kind, attrs.class_language,
1650  &metadata, attrs.exports_symbols);
1651  }
1652  }
1653 
1654  // Store a forward declaration to this class type in case any
1655  // parameters in any class methods need it for the clang types for
1656  // function prototypes.
1658  type_sp = std::make_shared<Type>(
1659  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
1660  LLDB_INVALID_UID, Type::eEncodingIsUID, &attrs.decl, clang_type,
1661  Type::ResolveState::Forward,
1663 
1664  // Add our type to the unique type map so we don't end up creating many
1665  // copies of the same type over and over in the ASTContext for our
1666  // module
1667  unique_ast_entry_up->m_type_sp = type_sp;
1668  unique_ast_entry_up->m_die = die;
1669  unique_ast_entry_up->m_declaration = unique_decl;
1670  unique_ast_entry_up->m_byte_size = attrs.byte_size.getValueOr(0);
1671  dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename,
1672  *unique_ast_entry_up);
1673 
1674  if (!attrs.is_forward_declaration) {
1675  // Always start the definition for a class type so that if the class
1676  // has child classes or types that require the class to be created
1677  // for use as their decl contexts the class will be ready to accept
1678  // these child definitions.
1679  if (!die.HasChildren()) {
1680  // No children for this struct/union/class, lets finish it
1681  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
1682  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
1683  } else {
1684  dwarf->GetObjectFile()->GetModule()->ReportError(
1685  "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
1686  "definition.\nPlease file a bug and attach the file at the "
1687  "start of this error message",
1688  die.GetOffset(), attrs.name.GetCString());
1689  }
1690 
1691  if (tag == DW_TAG_structure_type) // this only applies in C
1692  {
1693  clang::RecordDecl *record_decl =
1694  TypeSystemClang::GetAsRecordDecl(clang_type);
1695 
1696  if (record_decl) {
1698  record_decl, ClangASTImporter::LayoutInfo());
1699  }
1700  }
1701  } else if (clang_type_was_created) {
1702  // Start the definition if the class is not objective C since the
1703  // underlying decls respond to isCompleteDefinition(). Objective
1704  // C decls don't respond to isCompleteDefinition() so we can't
1705  // start the declaration definition right away. For C++
1706  // class/union/structs we want to start the definition in case the
1707  // class is needed as the declaration context for a contained class
1708  // or type without the need to complete that type..
1709 
1710  if (attrs.class_language != eLanguageTypeObjC &&
1712  TypeSystemClang::StartTagDeclarationDefinition(clang_type);
1713 
1714  // Leave this as a forward declaration until we need to know the
1715  // details of the type. lldb_private::Type will automatically call
1716  // the SymbolFile virtual function
1717  // "SymbolFileDWARF::CompleteType(Type *)" When the definition
1718  // needs to be defined.
1719  assert(!dwarf->GetForwardDeclClangTypeToDie().count(
1720  ClangUtil::RemoveFastQualifiers(clang_type)
1721  .GetOpaqueQualType()) &&
1722  "Type already in the forward declaration map!");
1723  // Can't assume m_ast.GetSymbolFile() is actually a
1724  // SymbolFileDWARF, it can be a SymbolFileDWARFDebugMap for Apple
1725  // binaries.
1726  dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] =
1727  clang_type.GetOpaqueQualType();
1728  dwarf->GetForwardDeclClangTypeToDie().try_emplace(
1729  ClangUtil::RemoveFastQualifiers(clang_type).GetOpaqueQualType(),
1730  *die.GetDIERef());
1731  m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true);
1732  }
1733  }
1734 
1735  // If we made a clang type, set the trivial abi if applicable: We only
1736  // do this for pass by value - which implies the Trivial ABI. There
1737  // isn't a way to assert that something that would normally be pass by
1738  // value is pass by reference, so we ignore that attribute if set.
1739  if (attrs.calling_convention == llvm::dwarf::DW_CC_pass_by_value) {
1740  clang::CXXRecordDecl *record_decl =
1742  if (record_decl && record_decl->getDefinition()) {
1743  record_decl->setHasTrivialSpecialMemberForCall();
1744  }
1745  }
1746 
1747  if (attrs.calling_convention == llvm::dwarf::DW_CC_pass_by_reference) {
1748  clang::CXXRecordDecl *record_decl =
1750  if (record_decl)
1751  record_decl->setArgPassingRestrictions(
1752  clang::RecordDecl::APK_CannotPassInRegs);
1753  }
1754  return type_sp;
1755 }
1756 
1757 // DWARF parsing functions
1758 
1760 public:
1762  const CompilerType &class_opaque_type, const char *property_name,
1763  const CompilerType &property_opaque_type, // The property type is only
1764  // required if you don't have an
1765  // ivar decl
1766  clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name,
1767  const char *property_getter_name, uint32_t property_attributes,
1768  const ClangASTMetadata *metadata)
1769  : m_class_opaque_type(class_opaque_type), m_property_name(property_name),
1770  m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl),
1771  m_property_setter_name(property_setter_name),
1772  m_property_getter_name(property_getter_name),
1773  m_property_attributes(property_attributes) {
1774  if (metadata != nullptr) {
1775  m_metadata_up = std::make_unique<ClangASTMetadata>();
1776  *m_metadata_up = *metadata;
1777  }
1778  }
1779 
1781  *this = rhs;
1782  }
1783 
1789  m_ivar_decl = rhs.m_ivar_decl;
1793 
1794  if (rhs.m_metadata_up) {
1795  m_metadata_up = std::make_unique<ClangASTMetadata>();
1796  *m_metadata_up = *rhs.m_metadata_up;
1797  }
1798  return *this;
1799  }
1800 
1801  bool Finalize() {
1802  return TypeSystemClang::AddObjCClassProperty(
1806  }
1807 
1808 private:
1810  const char *m_property_name;
1812  clang::ObjCIvarDecl *m_ivar_decl;
1816  std::unique_ptr<ClangASTMetadata> m_metadata_up;
1817 };
1818 
1820  const DWARFDIE &die,
1821  TypeSystemClang::TemplateParameterInfos &template_param_infos) {
1822  const dw_tag_t tag = die.Tag();
1823  bool is_template_template_argument = false;
1824 
1825  switch (tag) {
1826  case DW_TAG_GNU_template_parameter_pack: {
1827  template_param_infos.packed_args =
1828  std::make_unique<TypeSystemClang::TemplateParameterInfos>();
1829  for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid();
1830  child_die = child_die.GetSibling()) {
1831  if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args))
1832  return false;
1833  }
1834  if (const char *name = die.GetName()) {
1835  template_param_infos.pack_name = name;
1836  }
1837  return true;
1838  }
1839  case DW_TAG_GNU_template_template_param:
1840  is_template_template_argument = true;
1841  LLVM_FALLTHROUGH;
1842  case DW_TAG_template_type_parameter:
1843  case DW_TAG_template_value_parameter: {
1844  DWARFAttributes attributes;
1845  const size_t num_attributes = die.GetAttributes(attributes);
1846  const char *name = nullptr;
1847  const char *template_name = nullptr;
1848  CompilerType clang_type;
1849  uint64_t uval64 = 0;
1850  bool uval64_valid = false;
1851  if (num_attributes > 0) {
1852  DWARFFormValue form_value;
1853  for (size_t i = 0; i < num_attributes; ++i) {
1854  const dw_attr_t attr = attributes.AttributeAtIndex(i);
1855 
1856  switch (attr) {
1857  case DW_AT_name:
1858  if (attributes.ExtractFormValueAtIndex(i, form_value))
1859  name = form_value.AsCString();
1860  break;
1861 
1862  case DW_AT_GNU_template_name:
1863  if (attributes.ExtractFormValueAtIndex(i, form_value))
1864  template_name = form_value.AsCString();
1865  break;
1866 
1867  case DW_AT_type:
1868  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1869  Type *lldb_type = die.ResolveTypeUID(form_value.Reference());
1870  if (lldb_type)
1871  clang_type = lldb_type->GetForwardCompilerType();
1872  }
1873  break;
1874 
1875  case DW_AT_const_value:
1876  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1877  uval64_valid = true;
1878  uval64 = form_value.Unsigned();
1879  }
1880  break;
1881  default:
1882  break;
1883  }
1884  }
1885 
1886  clang::ASTContext &ast = m_ast.getASTContext();
1887  if (!clang_type)
1888  clang_type = m_ast.GetBasicType(eBasicTypeVoid);
1889 
1890  if (!is_template_template_argument) {
1891  bool is_signed = false;
1892  if (name && name[0])
1893  template_param_infos.names.push_back(name);
1894  else
1895  template_param_infos.names.push_back(NULL);
1896 
1897  // Get the signed value for any integer or enumeration if available
1898  clang_type.IsIntegerOrEnumerationType(is_signed);
1899 
1900  if (tag == DW_TAG_template_value_parameter && uval64_valid) {
1901  llvm::Optional<uint64_t> size = clang_type.GetBitSize(nullptr);
1902  if (!size)
1903  return false;
1904  llvm::APInt apint(*size, uval64, is_signed);
1905  template_param_infos.args.push_back(
1906  clang::TemplateArgument(ast, llvm::APSInt(apint, !is_signed),
1907  ClangUtil::GetQualType(clang_type)));
1908  } else {
1909  template_param_infos.args.push_back(
1910  clang::TemplateArgument(ClangUtil::GetQualType(clang_type)));
1911  }
1912  } else {
1913  auto *tplt_type = m_ast.CreateTemplateTemplateParmDecl(template_name);
1914  template_param_infos.names.push_back(name);
1915  template_param_infos.args.push_back(
1916  clang::TemplateArgument(clang::TemplateName(tplt_type)));
1917  }
1918  }
1919  }
1920  return true;
1921 
1922  default:
1923  break;
1924  }
1925  return false;
1926 }
1927 
1929  const DWARFDIE &parent_die,
1930  TypeSystemClang::TemplateParameterInfos &template_param_infos) {
1931 
1932  if (!parent_die)
1933  return false;
1934 
1935  for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
1936  die = die.GetSibling()) {
1937  const dw_tag_t tag = die.Tag();
1938 
1939  switch (tag) {
1940  case DW_TAG_template_type_parameter:
1941  case DW_TAG_template_value_parameter:
1942  case DW_TAG_GNU_template_parameter_pack:
1943  case DW_TAG_GNU_template_template_param:
1944  ParseTemplateDIE(die, template_param_infos);
1945  break;
1946 
1947  default:
1948  break;
1949  }
1950  }
1951  return template_param_infos.args.size() == template_param_infos.names.size();
1952 }
1953 
1955  lldb_private::Type *type,
1956  CompilerType &clang_type) {
1957  const dw_tag_t tag = die.Tag();
1958  SymbolFileDWARF *dwarf = die.GetDWARF();
1959 
1960  ClangASTImporter::LayoutInfo layout_info;
1961 
1962  if (die.HasChildren()) {
1963  const bool type_is_objc_object_or_interface =
1964  TypeSystemClang::IsObjCObjectOrInterfaceType(clang_type);
1965  if (type_is_objc_object_or_interface) {
1966  // For objective C we don't start the definition when the class is
1967  // created.
1968  TypeSystemClang::StartTagDeclarationDefinition(clang_type);
1969  }
1970 
1971  int tag_decl_kind = -1;
1972  AccessType default_accessibility = eAccessNone;
1973  if (tag == DW_TAG_structure_type) {
1974  tag_decl_kind = clang::TTK_Struct;
1975  default_accessibility = eAccessPublic;
1976  } else if (tag == DW_TAG_union_type) {
1977  tag_decl_kind = clang::TTK_Union;
1978  default_accessibility = eAccessPublic;
1979  } else if (tag == DW_TAG_class_type) {
1980  tag_decl_kind = clang::TTK_Class;
1981  default_accessibility = eAccessPrivate;
1982  }
1983 
1984  std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> bases;
1985  std::vector<int> member_accessibilities;
1986  bool is_a_class = false;
1987  // Parse members and base classes first
1988  std::vector<DWARFDIE> member_function_dies;
1989 
1990  DelayedPropertyList delayed_properties;
1991  ParseChildMembers(die, clang_type, bases, member_accessibilities,
1992  member_function_dies, delayed_properties,
1993  default_accessibility, is_a_class, layout_info);
1994 
1995  // Now parse any methods if there were any...
1996  for (const DWARFDIE &die : member_function_dies)
1997  dwarf->ResolveType(die);
1998 
1999  if (type_is_objc_object_or_interface) {
2000  ConstString class_name(clang_type.GetTypeName());
2001  if (class_name) {
2002  dwarf->GetObjCMethods(class_name, [&](DWARFDIE method_die) {
2003  method_die.ResolveType();
2004  return true;
2005  });
2006 
2007  for (DelayedPropertyList::iterator pi = delayed_properties.begin(),
2008  pe = delayed_properties.end();
2009  pi != pe; ++pi)
2010  pi->Finalize();
2011  }
2012  }
2013 
2014  // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2015  // need to tell the clang type it is actually a class.
2016  if (!type_is_objc_object_or_interface) {
2017  if (is_a_class && tag_decl_kind != clang::TTK_Class)
2018  m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type),
2019  clang::TTK_Class);
2020  }
2021 
2022  // Since DW_TAG_structure_type gets used for both classes and
2023  // structures, we may need to set any DW_TAG_member fields to have a
2024  // "private" access if none was specified. When we parsed the child
2025  // members we tracked that actual accessibility value for each
2026  // DW_TAG_member in the "member_accessibilities" array. If the value
2027  // for the member is zero, then it was set to the
2028  // "default_accessibility" which for structs was "public". Below we
2029  // correct this by setting any fields to "private" that weren't
2030  // correctly set.
2031  if (is_a_class && !member_accessibilities.empty()) {
2032  // This is a class and all members that didn't have their access
2033  // specified are private.
2035  m_ast.GetAsRecordDecl(clang_type), eAccessPrivate,
2036  &member_accessibilities.front(), member_accessibilities.size());
2037  }
2038 
2039  if (!bases.empty()) {
2040  // Make sure all base classes refer to complete types and not forward
2041  // declarations. If we don't do this, clang will crash with an
2042  // assertion in the call to clang_type.TransferBaseClasses()
2043  for (const auto &base_class : bases) {
2044  clang::TypeSourceInfo *type_source_info =
2045  base_class->getTypeSourceInfo();
2046  if (type_source_info)
2047  RequireCompleteType(m_ast.GetType(type_source_info->getType()));
2048  }
2049 
2051  std::move(bases));
2052  }
2053  }
2054 
2056  TypeSystemClang::BuildIndirectFields(clang_type);
2057  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
2058 
2059  if (!layout_info.field_offsets.empty() || !layout_info.base_offsets.empty() ||
2060  !layout_info.vbase_offsets.empty()) {
2061  if (type)
2062  layout_info.bit_size = type->GetByteSize(nullptr).getValueOr(0) * 8;
2063  if (layout_info.bit_size == 0)
2064  layout_info.bit_size =
2065  die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8;
2066 
2067  clang::CXXRecordDecl *record_decl =
2069  if (record_decl)
2070  GetClangASTImporter().SetRecordLayout(record_decl, layout_info);
2071  }
2072 
2073  return (bool)clang_type;
2074 }
2075 
2077  lldb_private::Type *type,
2078  CompilerType &clang_type) {
2079  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
2080  if (die.HasChildren()) {
2081  bool is_signed = false;
2082  clang_type.IsIntegerType(is_signed);
2083  ParseChildEnumerators(clang_type, is_signed,
2084  type->GetByteSize(nullptr).getValueOr(0), die);
2085  }
2086  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
2087  }
2088  return (bool)clang_type;
2089 }
2090 
2092  lldb_private::Type *type,
2093  CompilerType &clang_type) {
2094  SymbolFileDWARF *dwarf = die.GetDWARF();
2095 
2096  std::lock_guard<std::recursive_mutex> guard(
2097  dwarf->GetObjectFile()->GetModule()->GetMutex());
2098 
2099  // Disable external storage for this type so we don't get anymore
2100  // clang::ExternalASTSource queries for this type.
2101  m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false);
2102 
2103  if (!die)
2104  return false;
2105 
2106  const dw_tag_t tag = die.Tag();
2107 
2108  Log *log =
2109  nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2110  if (log)
2111  dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
2112  log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2113  die.GetID(), die.GetTagAsCString(), type->GetName().AsCString());
2114  assert(clang_type);
2115  DWARFAttributes attributes;
2116  switch (tag) {
2117  case DW_TAG_structure_type:
2118  case DW_TAG_union_type:
2119  case DW_TAG_class_type:
2120  return CompleteRecordType(die, type, clang_type);
2121  case DW_TAG_enumeration_type:
2122  return CompleteEnumType(die, type, clang_type);
2123  default:
2124  assert(false && "not a forward clang type decl!");
2125  break;
2126  }
2127 
2128  return false;
2129 }
2130 
2132  lldb_private::CompilerDeclContext decl_context) {
2133  auto opaque_decl_ctx =
2134  (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
2135  for (auto it = m_decl_ctx_to_die.find(opaque_decl_ctx);
2136  it != m_decl_ctx_to_die.end() && it->first == opaque_decl_ctx;
2137  it = m_decl_ctx_to_die.erase(it))
2138  for (DWARFDIE decl = it->second.GetFirstChild(); decl;
2139  decl = decl.GetSibling())
2140  GetClangDeclForDIE(decl);
2141 }
2142 
2144  clang::Decl *clang_decl = GetClangDeclForDIE(die);
2145  if (clang_decl != nullptr)
2146  return m_ast.GetCompilerDecl(clang_decl);
2147  return CompilerDecl();
2148 }
2149 
2152  clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die);
2153  if (clang_decl_ctx)
2154  return m_ast.CreateDeclContext(clang_decl_ctx);
2155  return CompilerDeclContext();
2156 }
2157 
2160  clang::DeclContext *clang_decl_ctx =
2161  GetClangDeclContextContainingDIE(die, nullptr);
2162  if (clang_decl_ctx)
2163  return m_ast.CreateDeclContext(clang_decl_ctx);
2164  return CompilerDeclContext();
2165 }
2166 
2168  lldb_private::CompilerType &clang_type, bool is_signed,
2169  uint32_t enumerator_byte_size, const DWARFDIE &parent_die) {
2170  if (!parent_die)
2171  return 0;
2172 
2173  size_t enumerators_added = 0;
2174 
2175  for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2176  die = die.GetSibling()) {
2177  const dw_tag_t tag = die.Tag();
2178  if (tag == DW_TAG_enumerator) {
2179  DWARFAttributes attributes;
2180  const size_t num_child_attributes = die.GetAttributes(attributes);
2181  if (num_child_attributes > 0) {
2182  const char *name = nullptr;
2183  bool got_value = false;
2184  int64_t enum_value = 0;
2185  Declaration decl;
2186 
2187  uint32_t i;
2188  for (i = 0; i < num_child_attributes; ++i) {
2189  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2190  DWARFFormValue form_value;
2191  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2192  switch (attr) {
2193  case DW_AT_const_value:
2194  got_value = true;
2195  if (is_signed)
2196  enum_value = form_value.Signed();
2197  else
2198  enum_value = form_value.Unsigned();
2199  break;
2200 
2201  case DW_AT_name:
2202  name = form_value.AsCString();
2203  break;
2204 
2205  case DW_AT_description:
2206  default:
2207  case DW_AT_decl_file:
2208  decl.SetFile(attributes.CompileUnitAtIndex(i)->GetFile(
2209  form_value.Unsigned()));
2210  break;
2211  case DW_AT_decl_line:
2212  decl.SetLine(form_value.Unsigned());
2213  break;
2214  case DW_AT_decl_column:
2215  decl.SetColumn(form_value.Unsigned());
2216  break;
2217  case DW_AT_sibling:
2218  break;
2219  }
2220  }
2221  }
2222 
2223  if (name && name[0] && got_value) {
2225  clang_type, decl, name, enum_value, enumerator_byte_size * 8);
2226  ++enumerators_added;
2227  }
2228  }
2229  }
2230  }
2231  return enumerators_added;
2232 }
2233 
2235  const DWARFDIE &die) {
2236  DWARFRangeList func_ranges;
2237  const char *name = nullptr;
2238  const char *mangled = nullptr;
2239  int decl_file = 0;
2240  int decl_line = 0;
2241  int decl_column = 0;
2242  int call_file = 0;
2243  int call_line = 0;
2244  int call_column = 0;
2245  DWARFExpression frame_base;
2246 
2247  const dw_tag_t tag = die.Tag();
2248 
2249  if (tag != DW_TAG_subprogram)
2250  return nullptr;
2251 
2252  if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
2253  decl_column, call_file, call_line, call_column,
2254  &frame_base)) {
2255 
2256  // Union of all ranges in the function DIE (if the function is
2257  // discontiguous)
2258  AddressRange func_range;
2259  lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0);
2260  lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0);
2261  if (lowest_func_addr != LLDB_INVALID_ADDRESS &&
2262  lowest_func_addr <= highest_func_addr) {
2263  ModuleSP module_sp(die.GetModule());
2265  lowest_func_addr, module_sp->GetSectionList());
2266  if (func_range.GetBaseAddress().IsValid())
2267  func_range.SetByteSize(highest_func_addr - lowest_func_addr);
2268  }
2269 
2270  if (func_range.GetBaseAddress().IsValid()) {
2271  Mangled func_name;
2272  if (mangled)
2273  func_name.SetValue(ConstString(mangled), true);
2274  else if ((die.GetParent().Tag() == DW_TAG_compile_unit ||
2275  die.GetParent().Tag() == DW_TAG_partial_unit) &&
2276  Language::LanguageIsCPlusPlus(
2278  !Language::LanguageIsObjC(
2280  name && strcmp(name, "main") != 0) {
2281  // If the mangled name is not present in the DWARF, generate the
2282  // demangled name using the decl context. We skip if the function is
2283  // "main" as its name is never mangled.
2284  bool is_static = false;
2285  bool is_variadic = false;
2286  bool has_template_params = false;
2287  unsigned type_quals = 0;
2288  std::vector<CompilerType> param_types;
2289  std::vector<clang::ParmVarDecl *> param_decls;
2290  StreamString sstr;
2291 
2293  sstr << decl_ctx.GetQualifiedName();
2294 
2295  clang::DeclContext *containing_decl_ctx =
2296  GetClangDeclContextContainingDIE(die, nullptr);
2297  ParseChildParameters(containing_decl_ctx, die, true, is_static,
2298  is_variadic, has_template_params, param_types,
2299  param_decls, type_quals);
2300  sstr << "(";
2301  for (size_t i = 0; i < param_types.size(); i++) {
2302  if (i > 0)
2303  sstr << ", ";
2304  sstr << param_types[i].GetTypeName();
2305  }
2306  if (is_variadic)
2307  sstr << ", ...";
2308  sstr << ")";
2309  if (type_quals & clang::Qualifiers::Const)
2310  sstr << " const";
2311 
2312  func_name.SetValue(ConstString(sstr.GetString()), false);
2313  } else
2314  func_name.SetValue(ConstString(name), false);
2315 
2316  FunctionSP func_sp;
2317  std::unique_ptr<Declaration> decl_up;
2318  if (decl_file != 0 || decl_line != 0 || decl_column != 0)
2319  decl_up = std::make_unique<Declaration>(die.GetCU()->GetFile(decl_file),
2320  decl_line, decl_column);
2321 
2322  SymbolFileDWARF *dwarf = die.GetDWARF();
2323  // Supply the type _only_ if it has already been parsed
2324  Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE());
2325 
2326  assert(func_type == nullptr || func_type != DIE_IS_BEING_PARSED);
2327 
2328  if (dwarf->FixupAddress(func_range.GetBaseAddress())) {
2329  const user_id_t func_user_id = die.GetID();
2330  func_sp =
2331  std::make_shared<Function>(&comp_unit,
2332  func_user_id, // UserID is the DIE offset
2333  func_user_id, func_name, func_type,
2334  func_range); // first address range
2335 
2336  if (func_sp.get() != nullptr) {
2337  if (frame_base.IsValid())
2338  func_sp->GetFrameBaseExpression() = frame_base;
2339  comp_unit.AddFunction(func_sp);
2340  return func_sp.get();
2341  }
2342  }
2343  }
2344  }
2345  return nullptr;
2346 }
2347 
2349  const DWARFDIE &die, const DWARFDIE &parent_die,
2350  const lldb_private::CompilerType &class_clang_type,
2351  std::vector<int> &member_accessibilities,
2352  lldb::AccessType default_accessibility,
2353  DelayedPropertyList &delayed_properties,
2355  FieldInfo &last_field_info) {
2356  ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2357  const dw_tag_t tag = die.Tag();
2358  // Get the parent byte size so we can verify any members will fit
2359  const uint64_t parent_byte_size =
2360  parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX);
2361  const uint64_t parent_bit_size =
2362  parent_byte_size == UINT64_MAX ? UINT64_MAX : parent_byte_size * 8;
2363 
2364  DWARFAttributes attributes;
2365  const size_t num_attributes = die.GetAttributes(attributes);
2366  if (num_attributes == 0)
2367  return;
2368 
2369  const char *name = nullptr;
2370  const char *prop_name = nullptr;
2371  const char *prop_getter_name = nullptr;
2372  const char *prop_setter_name = nullptr;
2373  uint32_t prop_attributes = 0;
2374 
2375  bool is_artificial = false;
2376  DWARFFormValue encoding_form;
2377  AccessType accessibility = eAccessNone;
2378  uint32_t member_byte_offset =
2379  (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX;
2380  llvm::Optional<uint64_t> byte_size;
2381  int64_t bit_offset = 0;
2382  uint64_t data_bit_offset = UINT64_MAX;
2383  size_t bit_size = 0;
2384  bool is_external =
2385  false; // On DW_TAG_members, this means the member is static
2386  uint32_t i;
2387  for (i = 0; i < num_attributes && !is_artificial; ++i) {
2388  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2389  DWARFFormValue form_value;
2390  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2391  // DW_AT_data_member_location indicates the byte offset of the
2392  // word from the base address of the structure.
2393  //
2394  // DW_AT_bit_offset indicates how many bits into the word
2395  // (according to the host endianness) the low-order bit of the
2396  // field starts. AT_bit_offset can be negative.
2397  //
2398  // DW_AT_bit_size indicates the size of the field in bits.
2399  switch (attr) {
2400  case DW_AT_name:
2401  name = form_value.AsCString();
2402  break;
2403  case DW_AT_type:
2404  encoding_form = form_value;
2405  break;
2406  case DW_AT_bit_offset:
2407  bit_offset = form_value.Signed();
2408  break;
2409  case DW_AT_bit_size:
2410  bit_size = form_value.Unsigned();
2411  break;
2412  case DW_AT_byte_size:
2413  byte_size = form_value.Unsigned();
2414  break;
2415  case DW_AT_data_bit_offset:
2416  data_bit_offset = form_value.Unsigned();
2417  break;
2418  case DW_AT_data_member_location:
2419  if (form_value.BlockData()) {
2420  Value initialValue(0);
2421  Value memberOffset(0);
2422  const DWARFDataExtractor &debug_info_data = die.GetData();
2423  uint32_t block_length = form_value.Unsigned();
2424  uint32_t block_offset =
2425  form_value.BlockData() - debug_info_data.GetDataStart();
2426  if (DWARFExpression::Evaluate(
2427  nullptr, // ExecutionContext *
2428  nullptr, // RegisterContext *
2429  module_sp,
2430  DataExtractor(debug_info_data, block_offset, block_length),
2431  die.GetCU(), eRegisterKindDWARF, &initialValue, nullptr,
2432  memberOffset, nullptr)) {
2433  member_byte_offset = memberOffset.ResolveValue(nullptr).UInt();
2434  }
2435  } else {
2436  // With DWARF 3 and later, if the value is an integer constant,
2437  // this form value is the offset in bytes from the beginning of
2438  // the containing entity.
2439  member_byte_offset = form_value.Unsigned();
2440  }
2441  break;
2442 
2443  case DW_AT_accessibility:
2444  accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2445  break;
2446  case DW_AT_artificial:
2447  is_artificial = form_value.Boolean();
2448  break;
2449  case DW_AT_APPLE_property_name:
2450  prop_name = form_value.AsCString();
2451  break;
2452  case DW_AT_APPLE_property_getter:
2453  prop_getter_name = form_value.AsCString();
2454  break;
2455  case DW_AT_APPLE_property_setter:
2456  prop_setter_name = form_value.AsCString();
2457  break;
2458  case DW_AT_APPLE_property_attribute:
2459  prop_attributes = form_value.Unsigned();
2460  break;
2461  case DW_AT_external:
2462  is_external = form_value.Boolean();
2463  break;
2464 
2465  default:
2466  case DW_AT_declaration:
2467  case DW_AT_description:
2468  case DW_AT_mutable:
2469  case DW_AT_visibility:
2470  case DW_AT_sibling:
2471  break;
2472  }
2473  }
2474  }
2475 
2476  if (prop_name) {
2477  ConstString fixed_setter;
2478 
2479  // Check if the property getter/setter were provided as full names.
2480  // We want basenames, so we extract them.
2481 
2482  if (prop_getter_name && prop_getter_name[0] == '-') {
2483  ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true);
2484  prop_getter_name = prop_getter_method.GetSelector().GetCString();
2485  }
2486 
2487  if (prop_setter_name && prop_setter_name[0] == '-') {
2488  ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true);
2489  prop_setter_name = prop_setter_method.GetSelector().GetCString();
2490  }
2491 
2492  // If the names haven't been provided, they need to be filled in.
2493 
2494  if (!prop_getter_name) {
2495  prop_getter_name = prop_name;
2496  }
2497  if (!prop_setter_name && prop_name[0] &&
2498  !(prop_attributes & DW_APPLE_PROPERTY_readonly)) {
2499  StreamString ss;
2500 
2501  ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]);
2502 
2503  fixed_setter.SetString(ss.GetString());
2504  prop_setter_name = fixed_setter.GetCString();
2505  }
2506  }
2507 
2508  // Clang has a DWARF generation bug where sometimes it represents
2509  // fields that are references with bad byte size and bit size/offset
2510  // information such as:
2511  //
2512  // DW_AT_byte_size( 0x00 )
2513  // DW_AT_bit_size( 0x40 )
2514  // DW_AT_bit_offset( 0xffffffffffffffc0 )
2515  //
2516  // So check the bit offset to make sure it is sane, and if the values
2517  // are not sane, remove them. If we don't do this then we will end up
2518  // with a crash if we try to use this type in an expression when clang
2519  // becomes unhappy with its recycled debug info.
2520 
2521  if (byte_size.getValueOr(0) == 0 && bit_offset < 0) {
2522  bit_size = 0;
2523  bit_offset = 0;
2524  }
2525 
2526  const bool class_is_objc_object_or_interface =
2527  TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type);
2528 
2529  // FIXME: Make Clang ignore Objective-C accessibility for expressions
2530  if (class_is_objc_object_or_interface)
2531  accessibility = eAccessNone;
2532 
2533  // Handle static members
2534  if (is_external && member_byte_offset == UINT32_MAX) {
2535  Type *var_type = die.ResolveTypeUID(encoding_form.Reference());
2536 
2537  if (var_type) {
2538  if (accessibility == eAccessNone)
2539  accessibility = eAccessPublic;
2540  TypeSystemClang::AddVariableToRecordType(
2541  class_clang_type, name, var_type->GetForwardCompilerType(),
2542  accessibility);
2543  }
2544  return;
2545  }
2546 
2547  if (!is_artificial) {
2548  Type *member_type = die.ResolveTypeUID(encoding_form.Reference());
2549 
2550  clang::FieldDecl *field_decl = nullptr;
2551  const uint64_t character_width = 8;
2552  const uint64_t word_width = 32;
2553  if (tag == DW_TAG_member) {
2554  if (member_type) {
2555  CompilerType member_clang_type = member_type->GetLayoutCompilerType();
2556 
2557  if (accessibility == eAccessNone)
2558  accessibility = default_accessibility;
2559  member_accessibilities.push_back(accessibility);
2560 
2561  uint64_t field_bit_offset =
2562  (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
2563 
2564  if (bit_size > 0) {
2565  FieldInfo this_field_info;
2566  this_field_info.bit_offset = field_bit_offset;
2567  this_field_info.bit_size = bit_size;
2568 
2569  if (data_bit_offset != UINT64_MAX) {
2570  this_field_info.bit_offset = data_bit_offset;
2571  } else {
2572  if (!byte_size)
2573  byte_size = member_type->GetByteSize(nullptr);
2574 
2575  ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2576  if (objfile->GetByteOrder() == eByteOrderLittle) {
2577  this_field_info.bit_offset += byte_size.getValueOr(0) * 8;
2578  this_field_info.bit_offset -= (bit_offset + bit_size);
2579  } else {
2580  this_field_info.bit_offset += bit_offset;
2581  }
2582  }
2583 
2584  // The ObjC runtime knows the byte offset but we still need to provide
2585  // the bit-offset in the layout. It just means something different then
2586  // what it does in C and C++. So we skip this check for ObjC types.
2587  //
2588  // We also skip this for fields of a union since they will all have a
2589  // zero offset.
2590  if (!TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type) &&
2591  !(parent_die.Tag() == DW_TAG_union_type && this_field_info.bit_offset == 0) &&
2592  ((this_field_info.bit_offset >= parent_bit_size) ||
2593  (last_field_info.IsBitfield() &&
2594  !last_field_info.NextBitfieldOffsetIsValid(
2595  this_field_info.bit_offset)))) {
2596  ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2597  objfile->GetModule()->ReportWarning(
2598  "0x%8.8" PRIx64 ": %s bitfield named \"%s\" has invalid "
2599  "bit offset (0x%8.8" PRIx64
2600  ") member will be ignored. Please file a bug against the "
2601  "compiler and include the preprocessed output for %s\n",
2602  die.GetID(), DW_TAG_value_to_name(tag), name,
2603  this_field_info.bit_offset, GetUnitName(parent_die).c_str());
2604  return;
2605  }
2606 
2607  // Update the field bit offset we will report for layout
2608  field_bit_offset = this_field_info.bit_offset;
2609 
2610  // Objective-C has invalid DW_AT_bit_offset values in older
2611  // versions of clang, so we have to be careful and only insert
2612  // unnamed bitfields if we have a new enough clang.
2613  bool detect_unnamed_bitfields = true;
2614 
2615  if (class_is_objc_object_or_interface)
2616  detect_unnamed_bitfields =
2618 
2619  if (detect_unnamed_bitfields) {
2620  clang::Optional<FieldInfo> unnamed_field_info;
2621  uint64_t last_field_end = 0;
2622 
2623  last_field_end =
2624  last_field_info.bit_offset + last_field_info.bit_size;
2625 
2626  if (!last_field_info.IsBitfield()) {
2627  // The last field was not a bit-field...
2628  // but if it did take up the entire word then we need to extend
2629  // last_field_end so the bit-field does not step into the last
2630  // fields padding.
2631  if (last_field_end != 0 && ((last_field_end % word_width) != 0))
2632  last_field_end += word_width - (last_field_end % word_width);
2633  }
2634 
2635  // If we have a gap between the last_field_end and the current
2636  // field we have an unnamed bit-field.
2637  // If we have a base class, we assume there is no unnamed
2638  // bit-field if this is the first field since the gap can be
2639  // attributed to the members from the base class. This assumption
2640  // is not correct if the first field of the derived class is
2641  // indeed an unnamed bit-field. We currently do not have the
2642  // machinary to track the offset of the last field of classes we
2643  // have seen before, so we are not handling this case.
2644  if (this_field_info.bit_offset != last_field_end &&
2645  this_field_info.bit_offset > last_field_end &&
2646  !(last_field_info.bit_offset == 0 &&
2647  last_field_info.bit_size == 0 &&
2648  layout_info.base_offsets.size() != 0)) {
2649  unnamed_field_info = FieldInfo{};
2650  unnamed_field_info->bit_size =
2651  this_field_info.bit_offset - last_field_end;
2652  unnamed_field_info->bit_offset = last_field_end;
2653  }
2654 
2655  if (unnamed_field_info) {
2656  clang::FieldDecl *unnamed_bitfield_decl =
2657  TypeSystemClang::AddFieldToRecordType(
2658  class_clang_type, llvm::StringRef(),
2660  word_width),
2661  accessibility, unnamed_field_info->bit_size);
2662 
2663  layout_info.field_offsets.insert(std::make_pair(
2664  unnamed_bitfield_decl, unnamed_field_info->bit_offset));
2665  }
2666  }
2667 
2668  last_field_info = this_field_info;
2669  last_field_info.SetIsBitfield(true);
2670  } else {
2671  last_field_info.bit_offset = field_bit_offset;
2672 
2673  if (llvm::Optional<uint64_t> clang_type_size =
2674  member_clang_type.GetByteSize(nullptr)) {
2675  last_field_info.bit_size = *clang_type_size * character_width;
2676  }
2677 
2678  last_field_info.SetIsBitfield(false);
2679  }
2680 
2681  if (!member_clang_type.IsCompleteType())
2682  member_clang_type.GetCompleteType();
2683 
2684  {
2685  // Older versions of clang emit array[0] and array[1] in the
2686  // same way (<rdar://problem/12566646>). If the current field
2687  // is at the end of the structure, then there is definitely no
2688  // room for extra elements and we override the type to
2689  // array[0].
2690 
2691  CompilerType member_array_element_type;
2692  uint64_t member_array_size;
2693  bool member_array_is_incomplete;
2694 
2695  if (member_clang_type.IsArrayType(&member_array_element_type,
2696  &member_array_size,
2697  &member_array_is_incomplete) &&
2698  !member_array_is_incomplete) {
2699  uint64_t parent_byte_size =
2700  parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size,
2701  UINT64_MAX);
2702 
2703  if (member_byte_offset >= parent_byte_size) {
2704  if (member_array_size != 1 &&
2705  (member_array_size != 0 ||
2706  member_byte_offset > parent_byte_size)) {
2707  module_sp->ReportError(
2708  "0x%8.8" PRIx64
2709  ": DW_TAG_member '%s' refers to type 0x%8.8x"
2710  " which extends beyond the bounds of 0x%8.8" PRIx64,
2711  die.GetID(), name, encoding_form.Reference().GetOffset(),
2712  parent_die.GetID());
2713  }
2714 
2715  member_clang_type =
2716  m_ast.CreateArrayType(member_array_element_type, 0, false);
2717  }
2718  }
2719  }
2720 
2721  RequireCompleteType(member_clang_type);
2722 
2723  field_decl = TypeSystemClang::AddFieldToRecordType(
2724  class_clang_type, name, member_clang_type, accessibility,
2725  bit_size);
2726 
2727  m_ast.SetMetadataAsUserID(field_decl, die.GetID());
2728 
2729  layout_info.field_offsets.insert(
2730  std::make_pair(field_decl, field_bit_offset));
2731  } else {
2732  if (name)
2733  module_sp->ReportError(
2734  "0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8x"
2735  " which was unable to be parsed",
2736  die.GetID(), name, encoding_form.Reference().GetOffset());
2737  else
2738  module_sp->ReportError(
2739  "0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8x"
2740  " which was unable to be parsed",
2741  die.GetID(), encoding_form.Reference().GetOffset());
2742  }
2743  }
2744 
2745  if (prop_name != nullptr && member_type) {
2746  clang::ObjCIvarDecl *ivar_decl = nullptr;
2747 
2748  if (field_decl) {
2749  ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2750  assert(ivar_decl != nullptr);
2751  }
2752 
2753  ClangASTMetadata metadata;
2754  metadata.SetUserID(die.GetID());
2755  delayed_properties.push_back(DelayedAddObjCClassProperty(
2756  class_clang_type, prop_name, member_type->GetLayoutCompilerType(),
2757  ivar_decl, prop_setter_name, prop_getter_name, prop_attributes,
2758  &metadata));
2759 
2760  if (ivar_decl)
2761  m_ast.SetMetadataAsUserID(ivar_decl, die.GetID());
2762  }
2763  }
2764 }
2765 
2767  const DWARFDIE &parent_die, CompilerType &class_clang_type,
2768  std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> &base_classes,
2769  std::vector<int> &member_accessibilities,
2770  std::vector<DWARFDIE> &member_function_dies,
2771  DelayedPropertyList &delayed_properties, AccessType &default_accessibility,
2772  bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) {
2773  if (!parent_die)
2774  return false;
2775 
2776  FieldInfo last_field_info;
2777 
2778  ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2779  TypeSystemClang *ast =
2780  llvm::dyn_cast_or_null<TypeSystemClang>(class_clang_type.GetTypeSystem());
2781  if (ast == nullptr)
2782  return false;
2783 
2784  for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2785  die = die.GetSibling()) {
2786  dw_tag_t tag = die.Tag();
2787 
2788  switch (tag) {
2789  case DW_TAG_member:
2790  case DW_TAG_APPLE_property:
2791  ParseSingleMember(die, parent_die, class_clang_type,
2792  member_accessibilities, default_accessibility,
2793  delayed_properties, layout_info, last_field_info);
2794  break;
2795 
2796  case DW_TAG_subprogram:
2797  // Let the type parsing code handle this one for us.
2798  member_function_dies.push_back(die);
2799  break;
2800 
2801  case DW_TAG_inheritance: {
2802  is_a_class = true;
2803  if (default_accessibility == eAccessNone)
2804  default_accessibility = eAccessPrivate;
2805  // TODO: implement DW_TAG_inheritance type parsing
2806  DWARFAttributes attributes;
2807  const size_t num_attributes = die.GetAttributes(attributes);
2808  if (num_attributes > 0) {
2809  DWARFFormValue encoding_form;
2810  AccessType accessibility = default_accessibility;
2811  bool is_virtual = false;
2812  bool is_base_of_class = true;
2813  off_t member_byte_offset = 0;
2814  uint32_t i;
2815  for (i = 0; i < num_attributes; ++i) {
2816  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2817  DWARFFormValue form_value;
2818  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2819  switch (attr) {
2820  case DW_AT_type:
2821  encoding_form = form_value;
2822  break;
2823  case DW_AT_data_member_location:
2824  if (form_value.BlockData()) {
2825  Value initialValue(0);
2826  Value memberOffset(0);
2827  const DWARFDataExtractor &debug_info_data = die.GetData();
2828  uint32_t block_length = form_value.Unsigned();
2829  uint32_t block_offset =
2830  form_value.BlockData() - debug_info_data.GetDataStart();
2831  if (DWARFExpression::Evaluate(
2832  nullptr, nullptr, module_sp,
2833  DataExtractor(debug_info_data, block_offset,
2834  block_length),
2835  die.GetCU(), eRegisterKindDWARF, &initialValue, nullptr,
2836  memberOffset, nullptr)) {
2837  member_byte_offset =
2838  memberOffset.ResolveValue(nullptr).UInt();
2839  }
2840  } else {
2841  // With DWARF 3 and later, if the value is an integer constant,
2842  // this form value is the offset in bytes from the beginning of
2843  // the containing entity.
2844  member_byte_offset = form_value.Unsigned();
2845  }
2846  break;
2847 
2848  case DW_AT_accessibility:
2849  accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2850  break;
2851 
2852  case DW_AT_virtuality:
2853  is_virtual = form_value.Boolean();
2854  break;
2855 
2856  case DW_AT_sibling:
2857  break;
2858 
2859  default:
2860  break;
2861  }
2862  }
2863  }
2864 
2865  Type *base_class_type = die.ResolveTypeUID(encoding_form.Reference());
2866  if (base_class_type == nullptr) {
2867  module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to "
2868  "resolve the base class at 0x%8.8x"
2869  " from enclosing type 0x%8.8x. \nPlease file "
2870  "a bug and attach the file at the start of "
2871  "this error message",
2872  die.GetOffset(),
2873  encoding_form.Reference().GetOffset(),
2874  parent_die.GetOffset());
2875  break;
2876  }
2877 
2878  CompilerType base_class_clang_type =
2879  base_class_type->GetFullCompilerType();
2880  assert(base_class_clang_type);
2881  if (TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type)) {
2882  ast->SetObjCSuperClass(class_clang_type, base_class_clang_type);
2883  } else {
2884  std::unique_ptr<clang::CXXBaseSpecifier> result =
2886  base_class_clang_type.GetOpaqueQualType(), accessibility,
2887  is_virtual, is_base_of_class);
2888  if (!result)
2889  break;
2890 
2891  base_classes.push_back(std::move(result));
2892 
2893  if (is_virtual) {
2894  // Do not specify any offset for virtual inheritance. The DWARF
2895  // produced by clang doesn't give us a constant offset, but gives
2896  // us a DWARF expressions that requires an actual object in memory.
2897  // the DW_AT_data_member_location for a virtual base class looks
2898  // like:
2899  // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref,
2900  // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref,
2901  // DW_OP_plus )
2902  // Given this, there is really no valid response we can give to
2903  // clang for virtual base class offsets, and this should eventually
2904  // be removed from LayoutRecordType() in the external
2905  // AST source in clang.
2906  } else {
2907  layout_info.base_offsets.insert(std::make_pair(
2908  ast->GetAsCXXRecordDecl(
2909  base_class_clang_type.GetOpaqueQualType()),
2910  clang::CharUnits::fromQuantity(member_byte_offset)));
2911  }
2912  }
2913  }
2914  } break;
2915 
2916  default:
2917  break;
2918  }
2919  }
2920 
2921  return true;
2922 }
2923 
2925  clang::DeclContext *containing_decl_ctx, const DWARFDIE &parent_die,
2926  bool skip_artificial, bool &is_static, bool &is_variadic,
2927  bool &has_template_params, std::vector<CompilerType> &function_param_types,
2928  std::vector<clang::ParmVarDecl *> &function_param_decls,
2929  unsigned &type_quals) {
2930  if (!parent_die)
2931  return 0;
2932 
2933  size_t arg_idx = 0;
2934  for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2935  die = die.GetSibling()) {
2936  const dw_tag_t tag = die.Tag();
2937  switch (tag) {
2938  case DW_TAG_formal_parameter: {
2939  DWARFAttributes attributes;
2940  const size_t num_attributes = die.GetAttributes(attributes);
2941  if (num_attributes > 0) {
2942  const char *name = nullptr;
2943  DWARFFormValue param_type_die_form;
2944  bool is_artificial = false;
2945  // one of None, Auto, Register, Extern, Static, PrivateExtern
2946 
2947  clang::StorageClass storage = clang::SC_None;
2948  uint32_t i;
2949  for (i = 0; i < num_attributes; ++i) {
2950  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2951  DWARFFormValue form_value;
2952  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2953  switch (attr) {
2954  case DW_AT_name:
2955  name = form_value.AsCString();
2956  break;
2957  case DW_AT_type:
2958  param_type_die_form = form_value;
2959  break;
2960  case DW_AT_artificial:
2961  is_artificial = form_value.Boolean();
2962  break;
2963  case DW_AT_location:
2964  case DW_AT_const_value:
2965  case DW_AT_default_value:
2966  case DW_AT_description:
2967  case DW_AT_endianity:
2968  case DW_AT_is_optional:
2969  case DW_AT_segment:
2970  case DW_AT_variable_parameter:
2971  default:
2972  case DW_AT_abstract_origin:
2973  case DW_AT_sibling:
2974  break;
2975  }
2976  }
2977  }
2978 
2979  bool skip = false;
2980  if (skip_artificial && is_artificial) {
2981  // In order to determine if a C++ member function is "const" we
2982  // have to look at the const-ness of "this"...
2983  if (arg_idx == 0 &&
2984  DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()) &&
2985  // Often times compilers omit the "this" name for the
2986  // specification DIEs, so we can't rely upon the name being in
2987  // the formal parameter DIE...
2988  (name == nullptr || ::strcmp(name, "this") == 0)) {
2989  Type *this_type =
2990  die.ResolveTypeUID(param_type_die_form.Reference());
2991  if (this_type) {
2992  uint32_t encoding_mask = this_type->GetEncodingMask();
2993  if (encoding_mask & Type::eEncodingIsPointerUID) {
2994  is_static = false;
2995 
2996  if (encoding_mask & (1u << Type::eEncodingIsConstUID))
2997  type_quals |= clang::Qualifiers::Const;
2998  if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
2999  type_quals |= clang::Qualifiers::Volatile;
3000  }
3001  }
3002  }
3003  skip = true;
3004  }
3005 
3006  if (!skip) {
3007  Type *type = die.ResolveTypeUID(param_type_die_form.Reference());
3008  if (type) {
3009  function_param_types.push_back(type->GetForwardCompilerType());
3010 
3011  clang::ParmVarDecl *param_var_decl =
3013  containing_decl_ctx, GetOwningClangModule(die), name,
3014  type->GetForwardCompilerType(), storage);
3015  assert(param_var_decl);
3016  function_param_decls.push_back(param_var_decl);
3017 
3018  m_ast.SetMetadataAsUserID(param_var_decl, die.GetID());
3019  }
3020  }
3021  }
3022  arg_idx++;
3023  } break;
3024 
3025  case DW_TAG_unspecified_parameters:
3026  is_variadic = true;
3027  break;
3028 
3029  case DW_TAG_template_type_parameter:
3030  case DW_TAG_template_value_parameter:
3031  case DW_TAG_GNU_template_parameter_pack:
3032  // The one caller of this was never using the template_param_infos, and
3033  // the local variable was taking up a large amount of stack space in
3034  // SymbolFileDWARF::ParseType() so this was removed. If we ever need the
3035  // template params back, we can add them back.
3036  // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
3037  has_template_params = true;
3038  break;
3039 
3040  default:
3041  break;
3042  }
3043  }
3044  return arg_idx;
3045 }
3046 
3047 llvm::Optional<SymbolFile::ArrayInfo>
3049  const ExecutionContext *exe_ctx) {
3050  SymbolFile::ArrayInfo array_info;
3051  if (!parent_die)
3052  return llvm::None;
3053 
3054  for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
3055  die = die.GetSibling()) {
3056  const dw_tag_t tag = die.Tag();
3057  if (tag != DW_TAG_subrange_type)
3058  continue;
3059 
3060  DWARFAttributes attributes;
3061  const size_t num_child_attributes = die.GetAttributes(attributes);
3062  if (num_child_attributes > 0) {
3063  uint64_t num_elements = 0;
3064  uint64_t lower_bound = 0;
3065  uint64_t upper_bound = 0;
3066  bool upper_bound_valid = false;
3067  uint32_t i;
3068  for (i = 0; i < num_child_attributes; ++i) {
3069  const dw_attr_t attr = attributes.AttributeAtIndex(i);
3070  DWARFFormValue form_value;
3071  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3072  switch (attr) {
3073  case DW_AT_name:
3074  break;
3075 
3076  case DW_AT_count:
3077  if (DWARFDIE var_die = die.GetReferencedDIE(DW_AT_count)) {
3078  if (var_die.Tag() == DW_TAG_variable)
3079  if (exe_ctx) {
3080  if (auto frame = exe_ctx->GetFrameSP()) {
3081  Status error;
3082  lldb::VariableSP var_sp;
3083  auto valobj_sp = frame->GetValueForVariableExpressionPath(
3084  var_die.GetName(), eNoDynamicValues, 0, var_sp,
3085  error);
3086  if (valobj_sp) {
3087  num_elements = valobj_sp->GetValueAsUnsigned(0);
3088  break;
3089  }
3090  }
3091  }
3092  } else
3093  num_elements = form_value.Unsigned();
3094  break;
3095 
3096  case DW_AT_bit_stride:
3097  array_info.bit_stride = form_value.Unsigned();
3098  break;
3099 
3100  case DW_AT_byte_stride:
3101  array_info.byte_stride = form_value.Unsigned();
3102  break;
3103 
3104  case DW_AT_lower_bound:
3105  lower_bound = form_value.Unsigned();
3106  break;
3107 
3108  case DW_AT_upper_bound:
3109  upper_bound_valid = true;
3110  upper_bound = form_value.Unsigned();
3111  break;
3112 
3113  default:
3114  case DW_AT_abstract_origin:
3115  case DW_AT_accessibility:
3116  case DW_AT_allocated:
3117  case DW_AT_associated:
3118  case DW_AT_data_location:
3119  case DW_AT_declaration:
3120  case DW_AT_description:
3121  case DW_AT_sibling:
3122  case DW_AT_threads_scaled:
3123  case DW_AT_type:
3124  case DW_AT_visibility:
3125  break;
3126  }
3127  }
3128  }
3129 
3130  if (num_elements == 0) {
3131  if (upper_bound_valid && upper_bound >= lower_bound)
3132  num_elements = upper_bound - lower_bound + 1;
3133  }
3134 
3135  array_info.element_orders.push_back(num_elements);
3136  }
3137  }
3138  return array_info;
3139 }
3140 
3142  if (die) {
3143  SymbolFileDWARF *dwarf = die.GetDWARF();
3144  DWARFAttributes attributes;
3145  const size_t num_attributes = die.GetAttributes(attributes);
3146  if (num_attributes > 0) {
3147  DWARFFormValue type_die_form;
3148  for (size_t i = 0; i < num_attributes; ++i) {
3149  dw_attr_t attr = attributes.AttributeAtIndex(i);
3150  DWARFFormValue form_value;
3151 
3152  if (attr == DW_AT_type &&
3153  attributes.ExtractFormValueAtIndex(i, form_value))
3154  return dwarf->ResolveTypeUID(form_value.Reference(), true);
3155  }
3156  }
3157  }
3158 
3159  return nullptr;
3160 }
3161 
3163  if (!die)
3164  return nullptr;
3165 
3166  switch (die.Tag()) {
3167  case DW_TAG_variable:
3168  case DW_TAG_constant:
3169  case DW_TAG_formal_parameter:
3170  case DW_TAG_imported_declaration:
3171  case DW_TAG_imported_module:
3172  break;
3173  default:
3174  return nullptr;
3175  }
3176 
3177  DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE());
3178  if (cache_pos != m_die_to_decl.end())
3179  return cache_pos->second;
3180 
3181  if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) {
3182  clang::Decl *decl = GetClangDeclForDIE(spec_die);
3183  m_die_to_decl[die.GetDIE()] = decl;
3184  m_decl_to_die[decl].insert(die.GetDIE());
3185  return decl;
3186  }
3187 
3188  if (DWARFDIE abstract_origin_die =
3189  die.GetReferencedDIE(DW_AT_abstract_origin)) {
3190  clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die);
3191  m_die_to_decl[die.GetDIE()] = decl;
3192  m_decl_to_die[decl].insert(die.GetDIE());
3193  return decl;
3194  }
3195 
3196  clang::Decl *decl = nullptr;
3197  switch (die.Tag()) {
3198  case DW_TAG_variable:
3199  case DW_TAG_constant:
3200  case DW_TAG_formal_parameter: {
3201  SymbolFileDWARF *dwarf = die.GetDWARF();
3202  Type *type = GetTypeForDIE(die);
3203  if (dwarf && type) {
3204  const char *name = die.GetName();
3205  clang::DeclContext *decl_context =
3206  TypeSystemClang::DeclContextGetAsDeclContext(
3207  dwarf->GetDeclContextContainingUID(die.GetID()));
3209  decl_context, GetOwningClangModule(die), name,
3210  ClangUtil::GetQualType(type->GetForwardCompilerType()));
3211  }
3212  break;
3213  }
3214  case DW_TAG_imported_declaration: {
3215  SymbolFileDWARF *dwarf = die.GetDWARF();
3216  DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3217  if (imported_uid) {
3218  CompilerDecl imported_decl = SymbolFileDWARF::GetDecl(imported_uid);
3219  if (imported_decl) {
3220  clang::DeclContext *decl_context =
3221  TypeSystemClang::DeclContextGetAsDeclContext(
3222  dwarf->GetDeclContextContainingUID(die.GetID()));
3223  if (clang::NamedDecl *clang_imported_decl =
3224  llvm::dyn_cast<clang::NamedDecl>(
3225  (clang::Decl *)imported_decl.GetOpaqueDecl()))
3227  decl_context, OptionalClangModuleID(), clang_imported_decl);
3228  }
3229  }
3230  break;
3231  }
3232  case DW_TAG_imported_module: {
3233  SymbolFileDWARF *dwarf = die.GetDWARF();
3234  DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3235 
3236  if (imported_uid) {
3237  CompilerDeclContext imported_decl_ctx =
3238  SymbolFileDWARF::GetDeclContext(imported_uid);
3239  if (imported_decl_ctx) {
3240  clang::DeclContext *decl_context =
3241  TypeSystemClang::DeclContextGetAsDeclContext(
3242  dwarf->GetDeclContextContainingUID(die.GetID()));
3243  if (clang::NamespaceDecl *ns_decl =
3244  TypeSystemClang::DeclContextGetAsNamespaceDecl(
3245  imported_decl_ctx))
3247  decl_context, OptionalClangModuleID(), ns_decl);
3248  }
3249  }
3250  break;
3251  }
3252  default:
3253  break;
3254  }
3255 
3256  m_die_to_decl[die.GetDIE()] = decl;
3257  m_decl_to_die[decl].insert(die.GetDIE());
3258 
3259  return decl;
3260 }
3261 
3262 clang::DeclContext *
3264  if (die) {
3265  clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die);
3266  if (decl_ctx)
3267  return decl_ctx;
3268 
3269  bool try_parsing_type = true;
3270  switch (die.Tag()) {
3271  case DW_TAG_compile_unit:
3272  case DW_TAG_partial_unit:
3273  decl_ctx = m_ast.GetTranslationUnitDecl();
3274  try_parsing_type = false;
3275  break;
3276 
3277  case DW_TAG_namespace:
3278  decl_ctx = ResolveNamespaceDIE(die);
3279  try_parsing_type = false;
3280  break;
3281 
3282  case DW_TAG_lexical_block:
3283  decl_ctx = GetDeclContextForBlock(die);
3284  try_parsing_type = false;
3285  break;
3286 
3287  default:
3288  break;
3289  }
3290 
3291  if (decl_ctx == nullptr && try_parsing_type) {
3292  Type *type = die.GetDWARF()->ResolveType(die);
3293  if (type)
3294  decl_ctx = GetCachedClangDeclContextForDIE(die);
3295  }
3296 
3297  if (decl_ctx) {
3298  LinkDeclContextToDIE(decl_ctx, die);
3299  return decl_ctx;
3300  }
3301  }
3302  return nullptr;
3303 }
3304 
3307  if (!die.IsValid())
3308  return {};
3309 
3310  for (DWARFDIE parent = die.GetParent(); parent.IsValid();
3311  parent = parent.GetParent()) {
3312  const dw_tag_t tag = parent.Tag();
3313  if (tag == DW_TAG_module) {
3314  DWARFDIE module_die = parent;
3315  auto it = m_die_to_module.find(module_die.GetDIE());
3316  if (it != m_die_to_module.end())
3317  return it->second;
3318  const char *name = module_die.GetAttributeValueAsString(DW_AT_name, 0);
3319  if (!name)
3320  return {};
3321 
3324  m_die_to_module.insert({module_die.GetDIE(), id});
3325  return id;
3326  }
3327  }
3328  return {};
3329 }
3330 
3331 static bool IsSubroutine(const DWARFDIE &die) {
3332  switch (die.Tag()) {
3333  case DW_TAG_subprogram:
3334  case DW_TAG_inlined_subroutine:
3335  return true;
3336  default:
3337  return false;
3338  }
3339 }
3340 
3342  for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) {
3343  if (IsSubroutine(candidate)) {
3344  if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3345  return candidate;
3346  } else {
3347  return DWARFDIE();
3348  }
3349  }
3350  }
3351  assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "
3352  "something not in a function");
3353  return DWARFDIE();
3354 }
3355 
3357  for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid();
3358  candidate = candidate.GetSibling()) {
3359  if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3360  return candidate;
3361  }
3362  }
3363  return DWARFDIE();
3364 }
3365 
3367  const DWARFDIE &function) {
3368  assert(IsSubroutine(function));
3369  for (DWARFDIE context = block; context != function.GetParent();
3370  context = context.GetParent()) {
3371  assert(!IsSubroutine(context) || context == function);
3372  if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) {
3373  return child;
3374  }
3375  }
3376  return DWARFDIE();
3377 }
3378 
3379 clang::DeclContext *
3381  assert(die.Tag() == DW_TAG_lexical_block);
3382  DWARFDIE containing_function_with_abstract_origin =
3384  if (!containing_function_with_abstract_origin) {
3385  return (clang::DeclContext *)ResolveBlockDIE(die);
3386  }
3388  die, containing_function_with_abstract_origin);
3389  CompilerDeclContext decl_context =
3391  return (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
3392 }
3393 
3394 clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) {
3395  if (die && die.Tag() == DW_TAG_lexical_block) {
3396  clang::BlockDecl *decl =
3397  llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]);
3398 
3399  if (!decl) {
3400  DWARFDIE decl_context_die;
3401  clang::DeclContext *decl_context =
3402  GetClangDeclContextContainingDIE(die, &decl_context_die);
3403  decl =
3405 
3406  if (decl)
3407  LinkDeclContextToDIE((clang::DeclContext *)decl, die);
3408  }
3409 
3410  return decl;
3411  }
3412  return nullptr;
3413 }
3414 
3415 clang::NamespaceDecl *
3417  if (die && die.Tag() == DW_TAG_namespace) {
3418  // See if we already parsed this namespace DIE and associated it with a
3419  // uniqued namespace declaration
3420  clang::NamespaceDecl *namespace_decl =
3421  static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]);
3422  if (namespace_decl)
3423  return namespace_decl;
3424  else {
3425  const char *namespace_name = die.GetName();
3426  clang::DeclContext *containing_decl_ctx =
3427  GetClangDeclContextContainingDIE(die, nullptr);
3428  bool is_inline =
3429  die.GetAttributeValueAsUnsigned(DW_AT_export_symbols, 0) != 0;
3430 
3431  namespace_decl = m_ast.GetUniqueNamespaceDeclaration(
3432  namespace_name, containing_decl_ctx, GetOwningClangModule(die),
3433  is_inline);
3434  Log *log =
3435  nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
3436  if (log) {
3437  SymbolFileDWARF *dwarf = die.GetDWARF();
3438  if (namespace_name) {
3439  dwarf->GetObjectFile()->GetModule()->LogMessage(
3440  log,
3441  "ASTContext => %p: 0x%8.8" PRIx64
3442  ": DW_TAG_namespace with DW_AT_name(\"%s\") => "
3443  "clang::NamespaceDecl *%p (original = %p)",
3444  static_cast<void *>(&m_ast.getASTContext()), die.GetID(),
3445  namespace_name, static_cast<void *>(namespace_decl),
3446  static_cast<void *>(namespace_decl->getOriginalNamespace()));
3447  } else {
3448  dwarf->GetObjectFile()->GetModule()->LogMessage(
3449  log,
3450  "ASTContext => %p: 0x%8.8" PRIx64
3451  ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p "
3452  "(original = %p)",
3453  static_cast<void *>(&m_ast.getASTContext()), die.GetID(),
3454  static_cast<void *>(namespace_decl),
3455  static_cast<void *>(namespace_decl->getOriginalNamespace()));
3456  }
3457  }
3458 
3459  if (namespace_decl)
3460  LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die);
3461  return namespace_decl;
3462  }
3463  }
3464  return nullptr;
3465 }
3466 
3468  const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) {
3469  SymbolFileDWARF *dwarf = die.GetDWARF();
3470 
3471  DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die);
3472 
3473  if (decl_ctx_die_copy)
3474  *decl_ctx_die_copy = decl_ctx_die;
3475 
3476  if (decl_ctx_die) {
3477  clang::DeclContext *clang_decl_ctx =
3478  GetClangDeclContextForDIE(decl_ctx_die);
3479  if (clang_decl_ctx)
3480  return clang_decl_ctx;
3481  }
3482  return m_ast.GetTranslationUnitDecl();
3483 }
3484 
3485 clang::DeclContext *
3487  if (die) {
3488  DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE());
3489  if (pos != m_die_to_decl_ctx.end())
3490  return pos->second;
3491  }
3492  return nullptr;
3493 }
3494 
3495 void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx,
3496  const DWARFDIE &die) {
3497  m_die_to_decl_ctx[die.GetDIE()] = decl_ctx;
3498  // There can be many DIEs for a single decl context
3499  // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE());
3500  m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die));
3501 }
3502 
3504  const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die,
3505  lldb_private::Type *class_type, std::vector<DWARFDIE> &failures) {
3506  if (!class_type || !src_class_die || !dst_class_die)
3507  return false;
3508  if (src_class_die.Tag() != dst_class_die.Tag())
3509  return false;
3510 
3511  // We need to complete the class type so we can get all of the method types
3512  // parsed so we can then unique those types to their equivalent counterparts
3513  // in "dst_cu" and "dst_class_die"
3514  class_type->GetFullCompilerType();
3515 
3516  DWARFDIE src_die;
3517  DWARFDIE dst_die;
3518  UniqueCStringMap<DWARFDIE> src_name_to_die;
3519  UniqueCStringMap<DWARFDIE> dst_name_to_die;
3520  UniqueCStringMap<DWARFDIE> src_name_to_die_artificial;
3521  UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial;
3522  for (src_die = src_class_die.GetFirstChild(); src_die.IsValid();
3523  src_die = src_die.GetSibling()) {
3524  if (src_die.Tag() == DW_TAG_subprogram) {
3525  // Make sure this is a declaration and not a concrete instance by looking
3526  // for DW_AT_declaration set to 1. Sometimes concrete function instances
3527  // are placed inside the class definitions and shouldn't be included in
3528  // the list of things are are tracking here.
3529  if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3530  const char *src_name = src_die.GetMangledName();
3531  if (src_name) {
3532  ConstString src_const_name(src_name);
3533  if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3534  src_name_to_die_artificial.Append(src_const_name, src_die);
3535  else
3536  src_name_to_die.Append(src_const_name, src_die);
3537  }
3538  }
3539  }
3540  }
3541  for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid();
3542  dst_die = dst_die.GetSibling()) {
3543  if (dst_die.Tag() == DW_TAG_subprogram) {
3544  // Make sure this is a declaration and not a concrete instance by looking
3545  // for DW_AT_declaration set to 1. Sometimes concrete function instances
3546  // are placed inside the class definitions and shouldn't be included in
3547  // the list of things are are tracking here.
3548  if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3549  const char *dst_name = dst_die.GetMangledName();
3550  if (dst_name) {
3551  ConstString dst_const_name(dst_name);
3552  if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3553  dst_name_to_die_artificial.Append(dst_const_name, dst_die);
3554  else
3555  dst_name_to_die.Append(dst_const_name, dst_die);
3556  }
3557  }
3558  }
3559  }
3560  const uint32_t src_size = src_name_to_die.GetSize();
3561  const uint32_t dst_size = dst_name_to_die.GetSize();
3562  Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO |
3563  // DWARF_LOG_TYPE_COMPLETION));
3564 
3565  // Is everything kosher so we can go through the members at top speed?
3566  bool fast_path = true;
3567 
3568  if (src_size != dst_size) {
3569  if (src_size != 0 && dst_size != 0) {
3570  LLDB_LOGF(log,
3571  "warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, "
3572  "but they didn't have the same size (src=%d, dst=%d)",
3573  src_class_die.GetOffset(), dst_class_die.GetOffset(), src_size,
3574  dst_size);
3575  }
3576 
3577  fast_path = false;
3578  }
3579 
3580  uint32_t idx;
3581 
3582  if (fast_path) {
3583  for (idx = 0; idx < src_size; ++idx) {
3584  src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3585  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3586 
3587  if (src_die.Tag() != dst_die.Tag()) {
3588  LLDB_LOGF(log,
3589  "warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3590  "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
3591  src_class_die.GetOffset(), dst_class_die.GetOffset(),
3592  src_die.GetOffset(), src_die.GetTagAsCString(),
3593  dst_die.GetOffset(), dst_die.GetTagAsCString());
3594  fast_path = false;
3595  }
3596 
3597  const char *src_name = src_die.GetMangledName();
3598  const char *dst_name = dst_die.GetMangledName();
3599 
3600  // Make sure the names match
3601  if (src_name == dst_name || (strcmp(src_name, dst_name) == 0))
3602  continue;
3603 
3604  LLDB_LOGF(log,
3605  "warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3606  "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
3607  src_class_die.GetOffset(), dst_class_die.GetOffset(),
3608  src_die.GetOffset(), src_name, dst_die.GetOffset(), dst_name);
3609 
3610  fast_path = false;
3611  }
3612  }
3613 
3614  DWARFASTParserClang *src_dwarf_ast_parser =
3615  static_cast<DWARFASTParserClang *>(
3617  DWARFASTParserClang *dst_dwarf_ast_parser =
3618  static_cast<DWARFASTParserClang *>(
3620 
3621  // Now do the work of linking the DeclContexts and Types.
3622  if (fast_path) {
3623  // We can do this quickly. Just run across the tables index-for-index
3624  // since we know each node has matching names and tags.
3625  for (idx = 0; idx < src_size; ++idx) {
3626  src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3627  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3628 
3629  clang::DeclContext *src_decl_ctx =
3630  src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
3631  if (src_decl_ctx) {
3632  LLDB_LOGF(log, "uniquing decl context %p from 0x%8.8x for 0x%8.8x",
3633  static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
3634  dst_die.GetOffset());
3635  dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
3636  } else {
3637  LLDB_LOGF(log,
3638  "warning: tried to unique decl context from 0x%8.8x for "
3639  "0x%8.8x, but none was found",
3640  src_die.GetOffset(), dst_die.GetOffset());
3641  }
3642 
3643  Type *src_child_type =
3644  dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
3645  if (src_child_type) {
3646  LLDB_LOGF(log,
3647  "uniquing type %p (uid=0x%" PRIx64
3648  ") from 0x%8.8x for 0x%8.8x",
3649  static_cast<void *>(src_child_type), src_child_type->GetID(),
3650  src_die.GetOffset(), dst_die.GetOffset());
3651  dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
3652  } else {
3653  LLDB_LOGF(log,
3654  "warning: tried to unique lldb_private::Type from "
3655  "0x%8.8x for 0x%8.8x, but none was found",
3656  src_die.GetOffset(), dst_die.GetOffset());
3657  }
3658  }
3659  } else {
3660  // We must do this slowly. For each member of the destination, look up a
3661  // member in the source with the same name, check its tag, and unique them
3662  // if everything matches up. Report failures.
3663 
3664  if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) {
3665  src_name_to_die.Sort();
3666 
3667  for (idx = 0; idx < dst_size; ++idx) {
3668  ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx);
3669  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3670  src_die = src_name_to_die.Find(dst_name, DWARFDIE());
3671 
3672  if (src_die && (src_die.Tag() == dst_die.Tag())) {
3673  clang::DeclContext *src_decl_ctx =
3674  src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
3675  if (src_decl_ctx) {
3676  LLDB_LOGF(log, "uniquing decl context %p from 0x%8.8x for 0x%8.8x",
3677  static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
3678  dst_die.GetOffset());
3679  dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
3680  } else {
3681  LLDB_LOGF(log,
3682  "warning: tried to unique decl context from 0x%8.8x "
3683  "for 0x%8.8x, but none was found",
3684  src_die.GetOffset(), dst_die.GetOffset());
3685  }
3686 
3687  Type *src_child_type =
3688  dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
3689  if (src_child_type) {
3690  LLDB_LOGF(
3691  log,
3692  "uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
3693  static_cast<void *>(src_child_type), src_child_type->GetID(),
3694  src_die.GetOffset(), dst_die.GetOffset());
3695  dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] =
3696  src_child_type;
3697  } else {
3698  LLDB_LOGF(log,
3699  "warning: tried to unique lldb_private::Type from "
3700  "0x%8.8x for 0x%8.8x, but none was found",
3701  src_die.GetOffset(), dst_die.GetOffset());
3702  }
3703  } else {
3704  LLDB_LOGF(log, "warning: couldn't find a match for 0x%8.8x",
3705  dst_die.GetOffset());
3706 
3707  failures.push_back(dst_die);
3708  }
3709  }
3710  }
3711  }
3712 
3713  const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize();
3714  const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize();
3715 
3716  if (src_size_artificial && dst_size_artificial) {
3717  dst_name_to_die_artificial.Sort();
3718 
3719  for (idx = 0; idx < src_size_artificial; ++idx) {
3720  ConstString src_name_artificial =
3721  src_name_to_die_artificial.GetCStringAtIndex(idx);
3722  src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
3723  dst_die =
3724  dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE());
3725 
3726  if (dst_die) {
3727  // Both classes have the artificial types, link them
3728  clang::DeclContext *src_decl_ctx =
3729  src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
3730  if (src_decl_ctx) {
3731  LLDB_LOGF(log, "uniquing decl context %p from 0x%8.8x for 0x%8.8x",
3732  static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
3733  dst_die.GetOffset());
3734  dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
3735  } else {
3736  LLDB_LOGF(log,
3737  "warning: tried to unique decl context from 0x%8.8x "
3738  "for 0x%8.8x, but none was found",
3739  src_die.GetOffset(), dst_die.GetOffset());
3740  }
3741 
3742  Type *src_child_type =
3743  dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
3744  if (src_child_type) {
3745  LLDB_LOGF(
3746  log,
3747  "uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
3748  static_cast<void *>(src_child_type), src_child_type->GetID(),
3749  src_die.GetOffset(), dst_die.GetOffset());
3750  dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
3751  } else {
3752  LLDB_LOGF(log,
3753  "warning: tried to unique lldb_private::Type from "
3754  "0x%8.8x for 0x%8.8x, but none was found",
3755  src_die.GetOffset(), dst_die.GetOffset());
3756  }
3757  }
3758  }
3759  }
3760 
3761  if (dst_size_artificial) {
3762  for (idx = 0; idx < dst_size_artificial; ++idx) {
3763  ConstString dst_name_artificial =
3764  dst_name_to_die_artificial.GetCStringAtIndex(idx);
3765  dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
3766  LLDB_LOGF(log,
3767  "warning: need to create artificial method for 0x%8.8x for "
3768  "method '%s'",
3769  dst_die.GetOffset(), dst_name_artificial.GetCString());
3770 
3771  failures.push_back(dst_die);
3772  }
3773  }
3774 
3775  return !failures.empty();
3776 }
lldb_private::Declaration::SetLine
void SetLine(uint32_t line)
Set accessor for the declaration line number.
Definition: Declaration.h:170
DWARFASTParserClang::DelayedAddObjCClassProperty::DelayedAddObjCClassProperty
DelayedAddObjCClassProperty(const CompilerType &class_opaque_type, const char *property_name, const CompilerType &property_opaque_type, clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, const char *property_getter_name, uint32_t property_attributes, const ClangASTMetadata *metadata)
Definition: DWARFASTParserClang.cpp:1761
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Definition: ClangASTImporter.h:73
lldb_private::TypeSystemClang::CreateBlockPointerType
CompilerType CreateBlockPointerType(const CompilerType &function_type)
Definition: TypeSystemClang.cpp:2126
ParsedDWARFTypeAttributes::is_vector
bool is_vector
Definition: DWARFASTParserClang.h:235
DWARFASTParserClang::DelayedAddObjCClassProperty
Definition: DWARFASTParserClang.cpp:1759
lldb_private::AddressRange::GetBaseAddress
Address & GetBaseAddress()
Get accessor for the base address of the range.
Definition: AddressRange.h:209
DWARFASTParserClang::CopyUniqueClassMethodTypes
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Definition: DWARFASTParserClang.cpp:3503
SymbolFileDWARFDebugMap.h
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Definition: TypeSystemClang.cpp:2100
lldb_private::TypeSystemClang::CreateBlockDeclaration
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Definition: TypeSystemClang.cpp:1812
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const char * DW_TAG_value_to_name(uint32_t val)
Definition: DWARFDefines.cpp:17
DWARFASTParserClang::DelayedAddObjCClassProperty::m_metadata_up
std::unique_ptr< ClangASTMetadata > m_metadata_up
Definition: DWARFASTParserClang.cpp:1816
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lldb_private::Type * GetTypeForDIE(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3141
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Definition: ExecutionContext.h:291
lldb_private::SymbolContext::comp_unit
CompileUnit * comp_unit
The CompileUnit for a given query.
Definition: SymbolContext.h:319
lldb_private::ClangASTImporter::CopyType
CompilerType CopyType(TypeSystemClang &dst, const CompilerType &src_type)
Copies the given type and the respective declarations to the destination type system.
Definition: ClangASTImporter.cpp:31
lldb_private::Type::EncodingDataType
EncodingDataType
Definition: Type.h:68
DWARFASTParserClang::DelayedAddObjCClassProperty::m_ivar_decl
clang::ObjCIvarDecl * m_ivar_decl
Definition: DWARFASTParserClang.cpp:1812
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DWARFDIE Reference() const
Definition: DWARFFormValue.cpp:501
DWARFDIE::GetParent
DWARFDIE GetParent() const
Definition: DWARFDIE.cpp:90
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Definition: UniqueCStringMap.h:168
DWARFBaseDIE::GetData
const lldb_private::DWARFDataExtractor & GetData() const
Definition: DWARFBaseDIE.cpp:123
FindFirstChildWithAbstractOrigin
static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, const DWARFDIE &function)
Definition: DWARFASTParserClang.cpp:3366
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bool TransferBaseClasses(lldb::opaque_compiler_type_t type, std::vector< std::unique_ptr< clang::CXXBaseSpecifier >> bases)
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CompilerDecl GetCompilerDecl(clang::Decl *decl)
Creates a CompilerDecl from the given Decl with the current TypeSystemClang instance as its typesyste...
Definition: TypeSystemClang.h:473
lldb_private::TypeSystemClang::getASTContext
clang::ASTContext & getASTContext()
Returns the clang::ASTContext instance managed by this TypeSystemClang.
Definition: TypeSystemClang.cpp:694
lldb_private::Address::IsValid
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Check if the object state is valid.
Definition: Address.h:332
lldb_private::TypeSystemClang::SetDefaultAccessForRecordFields
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Definition: DWARFASTParserClang.h:225
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Definition: ConstString.h:193
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Definition: CompilerType.h:173
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Definition: TypeSystemClang.h:68
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Definition: DWARFBaseDIE.h:54
DWARFASTParserClang::ParseStructureLikeDIE
lldb::TypeSP ParseStructureLikeDIE(const lldb_private::SymbolContext &sc, const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
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Definition: DWARFASTParserClang.cpp:1414
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Definition: DWARFASTParserClang.cpp:1811
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Definition: DWARFASTParserClang.cpp:233
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Definition: DWARFASTParserClang.cpp:3331
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Definition: SymbolContext.h:33
DWARFDefines.h
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Definition: DWARFDIE.cpp:355
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Definition: TypeMap.cpp:75
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Definition: ObjCLanguage.cpp:123
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Definition: TypeSystemClang.cpp:2135
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llvm::StringRef GetString() const
Definition: StreamString.cpp:51
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Definition: DWARFAttribute.h:44
DWARFDIE::GetAttributeValueAsReferenceDIE
DWARFDIE GetAttributeValueAsReferenceDIE(const dw_attr_t attr) const
Definition: DWARFDIE.cpp:130
DWARFDeclContext.h
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Definition: UniqueCStringMap.h:151
ClangUtil.h
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Definition: CompileUnit.h:38
lldb_private::CompilerType::IsIntegerOrEnumerationType
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Definition: CompilerType.cpp:153
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Definition: DWARFDIE.h:15
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Definition: DWARFFormValue.h:63
DWARFASTParserClang::GetClangDeclForDIE
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Definition: DWARFASTParserClang.cpp:3162
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Definition: Type.cpp:341
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Definition: Type.h:90
DEBUG_PRINTF
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Definition: DWARFASTParserClang.cpp:55
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Definition: UniqueCStringMap.h:68
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Definition: ClangASTImporter.h:74
lldb::eEncodingInvalid
@ eEncodingInvalid
Definition: lldb-enumerations.h:147
SymbolFileDWARFDwo.h
DWARFASTParserClang::LinkDeclContextToDIE
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Definition: DWARFASTParserClang.cpp:3495
error
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Definition: CommandReturnObject.cpp:17
DWARFASTParserClang::ParseChildParameters
size_t ParseChildParameters(clang::DeclContext *containing_decl_ctx, const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, bool &is_variadic, bool &has_template_params, std::vector< lldb_private::CompilerType > &function_args, std::vector< clang::ParmVarDecl * > &function_param_decls, unsigned &type_quals)
Definition: DWARFASTParserClang.cpp:2924
lldb::eEncodingSint
@ eEncodingSint
signed integer
Definition: lldb-enumerations.h:149
DWARFASTParserClang::GetClangDeclContextContainingDIE
clang::DeclContext * GetClangDeclContextContainingDIE(const DWARFDIE &die, DWARFDIE *decl_ctx_die)
Definition: DWARFASTParserClang.cpp:3467
GetUnitName
static std::string GetUnitName(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:431
lldb_private::Function
Definition: Function.h:413
SymbolFileDWARF::ForEachExternalModule
bool ForEachExternalModule(lldb_private::CompileUnit &, llvm::DenseSet< lldb_private::SymbolFile * > &, llvm::function_ref< bool(lldb_private::Module &)>) override
Definition: SymbolFileDWARF.cpp:865
DWARFUnit
Definition: DWARFUnit.h:80
LLDBAssert.h
DWARFASTParserClang::UpdateSymbolContextScopeForType
lldb::TypeSP UpdateSymbolContextScopeForType(const lldb_private::SymbolContext &sc, const DWARFDIE &die, lldb::TypeSP type_sp)
If type_sp is valid, calculate and set its symbol context scope, and update the type list for its bac...
Definition: DWARFASTParserClang.cpp:1379
lldb_private::ConstString::SetString
void SetString(const llvm::StringRef &s)
Definition: ConstString.cpp:306
DeclKindIsCXXClass
static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind)
Definition: DWARFASTParserClang.cpp:79
ClangASTMetadata.h
DWARFDIE::GetQualifiedName
const char * GetQualifiedName(std::string &storage) const
Definition: DWARFDIE.cpp:217
DWARFASTParserClang::GetClangDeclContextForDIE
clang::DeclContext * GetClangDeclContextForDIE(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3263
dwarf
Definition: ABISysV_arc.cpp:61
lldb_private::TypeSystemClang::GetAsCXXRecordDecl
static clang::CXXRecordDecl * GetAsCXXRecordDecl(lldb::opaque_compiler_type_t type)
Definition: TypeSystemClang.cpp:7150
DWARFASTParserClang::ParseFunctionFromDWARF
lldb_private::Function * ParseFunctionFromDWARF(lldb_private::CompileUnit &comp_unit, const DWARFDIE &die) override
Definition: DWARFASTParserClang.cpp:2234
lldb_private::DataExtractor
Definition: DataExtractor.h:48
lldb_private::ConstString::GetStringRef
llvm::StringRef GetStringRef() const
Get the string value as a llvm::StringRef.
Definition: ConstString.h:202
ParsedDWARFTypeAttributes::storage
clang::StorageClass storage
Definition: DWARFASTParserClang.h:239
SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext
lldb::TypeSP FindDefinitionTypeForDWARFDeclContext(const DWARFDeclContext &die_decl_ctx)
Definition: SymbolFileDWARFDebugMap.cpp:1086
Log.h
DWARFASTParserClang::DelayedAddObjCClassProperty::Finalize
bool Finalize()
Definition: DWARFASTParserClang.cpp:1801
ParsedDWARFTypeAttributes::is_inline
bool is_inline
Definition: DWARFASTParserClang.h:233
lldb_private::UniqueCStringMap::GetSize
size_t GetSize() const
Definition: UniqueCStringMap.h:148
lldb_private::ClangASTMetadata::SetObjectPtrName
void SetObjectPtrName(const char *name)
Definition: ClangASTMetadata.h:55
lldb_private::Declaration::SetColumn
void SetColumn(uint16_t column)
Set accessor for the declaration column number.
Definition: Declaration.h:177
lldb_private::TypeList::Insert
void Insert(const lldb::TypeSP &type)
Definition: TypeList.cpp:27
DWARFASTParserClang::FieldInfo::NextBitfieldOffsetIsValid
bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const
Definition: DWARFASTParserClang.h:187
lldb_private::Function::GetBlock
Block & GetBlock(bool can_create)
Get accessor for the block list.
Definition: Function.cpp:344
DWARFASTParserClang::m_die_to_module
DIEToModuleMap m_die_to_module
Definition: DWARFASTParserClang.h:93
DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF
lldb_private::CompilerDeclContext GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) override
Definition: DWARFASTParserClang.cpp:2159
lldb_private::TypeMap::Empty
bool Empty() const
Definition: TypeMap.cpp:77
DWARFASTParserClang::CompleteRecordType
bool CompleteRecordType(const DWARFDIE &die, lldb_private::Type *type, lldb_private::CompilerType &clang_type)
Definition: DWARFASTParserClang.cpp:1954
lldb_private::TypeSystemClang::CreateEnumerationType
CompilerType CreateEnumerationType(const char *name, clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, const Declaration &decl, const CompilerType &integer_qual_type, bool is_scoped)
Definition: TypeSystemClang.cpp:2200
DWARFASTParserClang::ParseTypeFromDWARF
lldb::TypeSP ParseTypeFromDWARF(const lldb_private::SymbolContext &sc, const DWARFDIE &die, bool *type_is_new_ptr) override
Definition: DWARFASTParserClang.cpp:437
DWARFDeclContext::GetQualifiedName
const char * GetQualifiedName() const
Definition: DWARFDeclContext.cpp:11
ParsedDWARFTypeAttributes::accessibility
lldb::AccessType accessibility
Definition: DWARFASTParserClang.h:228
DWARFASTParserClang::FieldInfo::bit_offset
uint64_t bit_offset
Definition: DWARFASTParserClang.h:179
lldb::eAccessNone
@ eAccessNone
Definition: lldb-enumerations.h:508
lldb_private::TypeSystemClang::SetMetadata
void SetMetadata(const clang::Decl *object, ClangASTMetadata &meta_data)
Definition: TypeSystemClang.cpp:2450
lldb_private::TypeSystemClang::SetObjCSuperClass
static bool SetObjCSuperClass(const CompilerType &type, const CompilerType &superclass_compiler_type)
Definition: TypeSystemClang.cpp:7675
DWARFBaseDIE::GetTagAsCString
const char * GetTagAsCString() const
Definition: DWARFBaseDIE.cpp:36
DWARFASTParserClang::FieldInfo::SetIsBitfield
void SetIsBitfield(bool flag)
Definition: DWARFASTParserClang.h:184
DWARFDIE::GetName
void GetName(lldb_private::Stream &s) const
Definition: DWARFDIE.cpp:229
lldb_private::SymbolContext::function
Function * function
The Function for a given query.
Definition: SymbolContext.h:320
StreamString.h
lldb_private::CompileUnit::AddFunction
void AddFunction(lldb::FunctionSP &function_sp)
Add a function to this compile unit.
Definition: CompileUnit.cpp:133
lldb::eBasicTypeInt
@ eBasicTypeInt
Definition: lldb-enumerations.h:753
lldb_private::DWARFExpression
Definition: DWARFExpression.h:35
DWARFDIE::GetMangledName
const char * GetMangledName() const
Definition: DWARFDIE.cpp:203
lldb_private::DataExtractor::GetDataStart
const uint8_t * GetDataStart() const
Get the data start pointer.
Definition: DataExtractor.h:411
lldb_private::ConstString
Definition: ConstString.h:40
SymbolFileDWARFDebugMap
Definition: SymbolFileDWARFDebugMap.h:25
GetContainingClangModule
static lldb::ModuleSP GetContainingClangModule(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:130
lldb_private::TypeSystemClang::GetTypeForDecl
CompilerType GetTypeForDecl(clang::NamedDecl *decl)
Definition: TypeSystemClang.cpp:1220
lldb_private::ObjectFile::GetByteOrder
virtual lldb::ByteOrder GetByteOrder() const =0
Gets whether endian swapping should occur when extracting data from this object file.
lldb_private::StreamString
Definition: StreamString.h:23
lldb_private::AddressRange
Definition: AddressRange.h:25
ParsedDWARFTypeAttributes::abstract_origin
DWARFFormValue abstract_origin
Definition: DWARFASTParserClang.h:244
lldb_private::Scalar::UInt
unsigned int UInt(unsigned int fail_value=0) const
Definition: Scalar.cpp:320
SymbolFileDWARF::GetDWARFDeclContext
static DWARFDeclContext GetDWARFDeclContext(const DWARFDIE &die)
Definition: SymbolFileDWARF.cpp:3864
ObjCLanguage.h
DWARFUnit::Supports_unnamed_objc_bitfields
bool Supports_unnamed_objc_bitfields()
Definition: DWARFUnit.cpp:584
DWARFFormValue
Definition: DWARFFormValue.h:20
SymbolFileDWARF::GetDIEToType
virtual DIEToTypePtr & GetDIEToType()
Definition: SymbolFileDWARF.h:459
lldb_private::ClangASTMetadata::SetIsDynamicCXXType
void SetIsDynamicCXXType(bool b)
Definition: ClangASTMetadata.h:27
GetContainingClangModuleDIE
static DWARFDIE GetContainingClangModuleDIE(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:111
lldb_private::Declaration::SetFile
void SetFile(const FileSpec &file_spec)
Set accessor for the declaration file specification.
Definition: Declaration.h:163
DWARFFormValue::Clear
void Clear()
Definition: DWARFFormValue.cpp:24
DWARFASTParserClang::DelayedAddObjCClassProperty::m_class_opaque_type
CompilerType m_class_opaque_type
Definition: DWARFASTParserClang.cpp:1809
DWARFASTParserClang::ParseChildMembers
bool ParseChildMembers(const DWARFDIE &die, lldb_private::CompilerType &class_compiler_type, std::vector< std::unique_ptr< clang::CXXBaseSpecifier >> &base_classes, std::vector< int > &member_accessibilities, std::vector< DWARFDIE > &member_function_dies, DelayedPropertyList &delayed_properties, lldb::AccessType &default_accessibility, bool &is_a_class, lldb_private::ClangASTImporter::LayoutInfo &layout_info)
Definition: DWARFASTParserClang.cpp:2766
lldb::eBasicTypeVoid
@ eBasicTypeVoid
Definition: lldb-enumerations.h:742
DWARFDIE::GetReferencedDIE
DWARFDIE GetReferencedDIE(const dw_attr_t attr) const
Definition: DWARFDIE.cpp:114
lldb_private::TypeSystemClang::CreateClassTemplateSpecializationType
CompilerType CreateClassTemplateSpecializationType(clang::ClassTemplateSpecializationDecl *class_template_specialization_decl)
Definition: TypeSystemClang.cpp:1588
DWARFASTParserClang::m_die_to_decl_ctx
DIEToDeclContextMap m_die_to_decl_ctx
Definition: DWARFASTParserClang.h:91
lldb_private::TypeSystemClang::GetUniqueNamespaceDeclaration
clang::NamespaceDecl * GetUniqueNamespaceDeclaration(const char *name, clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, bool is_inline=false)
Definition: TypeSystemClang.cpp:1748
lldb_private::CompilerType::IsIntegerType
bool IsIntegerType(bool &is_signed) const
Definition: CompilerType.cpp:141
DWARFBaseDIE::GetAttributeValueAsString
const char * GetAttributeValueAsString(const dw_attr_t attr, const char *fail_value) const
Definition: DWARFBaseDIE.cpp:40
FindAnyChildWithAbstractOrigin
static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context)
Definition: DWARFASTParserClang.cpp:3356
lldb::eLanguageTypeObjC
@ eLanguageTypeObjC
Objective-C.
Definition: lldb-enumerations.h:453
string
string(SUBSTRING ${p} 10 -1 pStripped) if($
Definition: Plugins/CMakeLists.txt:38
DWARFDIE::GetFirstChild
DWARFDIE GetFirstChild() const
Definition: DWARFDIE.cpp:98
DWARFDebugInfo.h
lldb_private::RangeVector::GetMaxRangeEnd
BaseType GetMaxRangeEnd(BaseType fail_value) const
Definition: RangeMap.h:229
lldb_private::TypeSystemClang::TemplateParameterInfos::pack_name
const char * pack_name
Definition: TypeSystemClang.h:334
SymbolFileDWARF::GetExternalModule
lldb::ModuleSP GetExternalModule(lldb_private::ConstString name)
Definition: SymbolFileDWARF.cpp:1566
lldb_private::TypeSystemClang::GetBuiltinTypeForDWARFEncodingAndBitSize
CompilerType GetBuiltinTypeForDWARFEncodingAndBitSize(llvm::StringRef type_name, uint32_t dw_ate, uint32_t bit_size)
Definition: TypeSystemClang.cpp:951
lldb_private::ClangASTMetadata
Definition: ClangASTMetadata.h:18
ParsedDWARFTypeAttributes::is_explicit
bool is_explicit
Definition: DWARFASTParserClang.h:231
lldb::eBasicTypeObjCClass
@ eBasicTypeObjCClass
Definition: lldb-enumerations.h:770
lldb::eLanguageTypeObjC_plus_plus
@ eLanguageTypeObjC_plus_plus
Objective-C++.
Definition: lldb-enumerations.h:454
DWARFAttributes::ExtractFormValueAtIndex
bool ExtractFormValueAtIndex(uint32_t i, DWARFFormValue &form_value) const
Definition: DWARFAttribute.cpp:36
lldb_private::RangeVector
Definition: RangeMap.h:125
ParsedDWARFTypeAttributes::is_objc_direct_call
bool is_objc_direct_call
Definition: DWARFASTParserClang.h:237
lldb_private::ObjCLanguage::MethodName
Definition: ObjCLanguage.h:26
lldb_private::TypeSystemClang::GetOrCreateClangModule
OptionalClangModuleID GetOrCreateClangModule(llvm::StringRef name, OptionalClangModuleID parent, bool is_framework=false, bool is_explicit=false)
Synthesize a clang::Module and return its ID or a default-constructed ID.
Definition: TypeSystemClang.cpp:1250
DWARFFormValue::Unsigned
uint64_t Unsigned() const
Definition: DWARFFormValue.h:64
ParsedDWARFTypeAttributes::bit_stride
uint32_t bit_stride
Definition: DWARFASTParserClang.h:252
lldb_private::UniqueCStringMap
Definition: UniqueCStringMap.h:26
lldb_private::TypeMap
Definition: TypeMap.h:20
SymbolFileDWARF::GetDWARFParser
static DWARFASTParser * GetDWARFParser(DWARFUnit &unit)
Definition: SymbolFileDWARF.cpp:3835
DWARFDIE::GetDIENamesAndRanges
bool GetDIENamesAndRanges(const char *&name, const char *&mangled, DWARFRangeList &ranges, int &decl_file, int &decl_line, int &decl_column, int &call_file, int &call_line, int &call_column, lldb_private::DWARFExpression *frame_base) const
Definition: DWARFDIE.cpp:439
DWARFFormValue::Signed
int64_t Signed() const
Definition: DWARFFormValue.h:66
lldb_private::CompilerDeclContext
Represents a generic declaration context in a program.
Definition: CompilerDeclContext.h:30
DWARFASTParserClang::FieldInfo
Definition: DWARFASTParserClang.h:177
lldb_private::SymbolContextScope
Definition: SymbolContextScope.h:64
ObjectFile.h
DWARFASTParserClang::GetClangASTImporter
lldb_private::ClangASTImporter & GetClangASTImporter()
Definition: DWARFASTParserClang.cpp:91
lldb_private::UserID::GetID
lldb::user_id_t GetID() const
Get accessor for the user ID.
Definition: UserID.h:47
lldb_private::TypeSystemClang::GetType
CompilerType GetType(clang::QualType qt)
Creates a CompilerType form the given QualType with the current TypeSystemClang instance as the Compi...
Definition: TypeSystemClang.h:235
lldb_private::ObjCLanguage::MethodName::GetSelector
ConstString GetSelector()
Definition: ObjCLanguage.cpp:172
lldb_private::Type::GetEncodingMask
uint32_t GetEncodingMask()
Definition: Type.cpp:639
lldb_private::TypeSystemClang::AddMethodOverridesForCXXRecordType
void AddMethodOverridesForCXXRecordType(lldb::opaque_compiler_type_t type)
Definition: TypeSystemClang.cpp:7633
lldb_private::CompilerType::GetCompleteType
bool GetCompleteType() const
Type Completion.
Definition: CompilerType.cpp:264
lldb_private::ClangASTImporter::SetRecordLayout
void SetRecordLayout(clang::RecordDecl *decl, const LayoutInfo &layout)
Sets the layout for the given RecordDecl.
Definition: ClangASTImporter.cpp:548
lldb_private::Value::ResolveValue
Scalar & ResolveValue(ExecutionContext *exe_ctx)
Definition: Value.cpp:566
lldb_private::ClangASTImporter::LayoutInfo::vbase_offsets
OffsetMap vbase_offsets
Definition: ClangASTImporter.h:75
lldb_private::Declaration::Clear
void Clear()
Clear the object's state.
Definition: Declaration.h:57
lldb::eAccessPublic
@ eAccessPublic
Definition: lldb-enumerations.h:509
SymbolFileDWARF::ResolveType
lldb_private::Type * ResolveType(const DWARFDIE &die, bool assert_not_being_parsed=true, bool resolve_function_context=false)
Definition: SymbolFileDWARF.cpp:1502
lldb::eBasicTypeObjCID
@ eBasicTypeObjCID
Definition: lldb-enumerations.h:769
TypeList.h
ParsedDWARFTypeAttributes::calling_convention
size_t calling_convention
Definition: DWARFASTParserClang.h:251
DWARFASTParserClang::DelayedAddObjCClassProperty::operator=
DelayedAddObjCClassProperty & operator=(const DelayedAddObjCClassProperty &rhs)
Definition: DWARFASTParserClang.cpp:1785
lldb_private::UniqueCStringMap::GetCStringAtIndex
ConstString GetCStringAtIndex(uint32_t idx) const
Definition: UniqueCStringMap.h:76
DWARFASTParserClang::FieldInfo::IsBitfield
bool IsBitfield()
Definition: DWARFASTParserClang.h:185
lldbassert
#define lldbassert(x)
Definition: LLDBAssert.h:15
ParsedDWARFTypeAttributes::encoding
uint32_t encoding
Definition: DWARFASTParserClang.h:254
DWARFASTParserClang::m_decl_to_die
DeclToDIEMap m_decl_to_die
Definition: DWARFASTParserClang.h:90
DWARFASTParserClang::~DWARFASTParserClang
~DWARFASTParserClang() override
Definition: DWARFASTParserClang.cpp:63
DWARFASTParserClang
Definition: DWARFASTParserClang.h:37
ParsedDWARFTypeAttributes::is_complete_objc_class
bool is_complete_objc_class
Definition: DWARFASTParserClang.h:230
SymbolFileDWARF::GetDecl
static lldb_private::CompilerDecl GetDecl(const DWARFDIE &die)
Definition: SymbolFileDWARF.cpp:3845
DWARFBaseDIE::GetAttributeValueAsUnsigned
uint64_t GetAttributeValueAsUnsigned(const dw_attr_t attr, uint64_t fail_value) const
Definition: DWARFBaseDIE.cpp:48
lldb_private::TypeSystemClang::ParseClassTemplateDecl
clang::ClassTemplateDecl * ParseClassTemplateDecl(clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, lldb::AccessType access_type, const char *parent_name, int tag_decl_kind, const TypeSystemClang::TemplateParameterInfos &template_param_infos)
Definition: TypeSystemClang.cpp:9150
lldb_private::Status
Definition: Status.h:44
lldb_private::UniqueCStringMap::Append
void Append(ConstString unique_cstr, const T &value)
Definition: UniqueCStringMap.h:42
SymbolFileDWARF::GetLanguage
static lldb::LanguageType GetLanguage(DWARFUnit &unit)
Definition: SymbolFileDWARF.cpp:3886
lldb_private::OptionalClangModuleID
A Clang module ID.
Definition: TypeSystemClang.h:57
uint32_t
DWARFASTParserClang::ParseSingleMember
void ParseSingleMember(const DWARFDIE &die, const DWARFDIE &parent_die, const lldb_private::CompilerType &class_clang_type, std::vector< int > &member_accessibilities, lldb::AccessType default_accessibility, DelayedPropertyList &delayed_properties, lldb_private::ClangASTImporter::LayoutInfo &layout_info, FieldInfo &last_field_info)
Definition: DWARFASTParserClang.cpp:2348
DWARFASTParserClang::FieldInfo::bit_size
uint64_t bit_size
Definition: DWARFASTParserClang.h:178
DWARFASTParserClang::ParseTypeModifier
lldb::TypeSP ParseTypeModifier(const lldb_private::SymbolContext &sc, const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:548
lldb::eAccessPrivate
@ eAccessPrivate
Definition: lldb-enumerations.h:510
DWARFFormValue::BlockData
const uint8_t * BlockData() const
Definition: DWARFFormValue.cpp:566
lldb_private::CompilerType::SetCompilerType
void SetCompilerType(TypeSystem *type_system, lldb::opaque_compiler_type_t type)
Definition: CompilerType.cpp:312
lldb_private::TypeSystemClang::GetEnumerationIntegerType
CompilerType GetEnumerationIntegerType(lldb::opaque_compiler_type_t type) override
Definition: TypeSystemClang.cpp:4200
lldb_private::ExecutionContext::GetFrameSP
const lldb::StackFrameSP & GetFrameSP() const
Get accessor to get the frame shared pointer.
Definition: ExecutionContext.h:468
ParsedDWARFTypeAttributes::mangled_name
const char * mangled_name
Definition: DWARFASTParserClang.h:240
DWARFASTParserClang.h
DWARFASTParserClang::GetDeclContextForUIDFromDWARF
lldb_private::CompilerDeclContext GetDeclContextForUIDFromDWARF(const DWARFDIE &die) override
Definition: DWARFASTParserClang.cpp:2151
id
void * id
Definition: PlatformiOSSimulatorCoreSimulatorSupport.h:20
SymbolFileDWARF::GetDeclContext
static lldb_private::CompilerDeclContext GetDeclContext(const DWARFDIE &die)
Definition: SymbolFileDWARF.cpp:3851
ParsedDWARFTypeAttributes::byte_size
llvm::Optional< uint64_t > byte_size
Definition: DWARFASTParserClang.h:250
lldb_private::TypeSystemClang::CreateVariableDeclaration
clang::VarDecl * CreateVariableDeclaration(clang::DeclContext *decl_context, OptionalClangModuleID owning_module, const char *name, clang::QualType type)
Definition: TypeSystemClang.cpp:1880
DWARFASTParserClang::m_die_to_decl
DIEToDeclMap m_die_to_decl
Definition: DWARFASTParserClang.h:89
lldb_private::CompilerType::GetTypeSystem
TypeSystem * GetTypeSystem() const
Accessors.
Definition: CompilerType.h:162
lldb_private::CompilerType::GetBitSize
llvm::Optional< uint64_t > GetBitSize(ExecutionContextScope *exe_scope) const
Return the size of the type in bits.
Definition: CompilerType.cpp:482
DWARFASTParserClang::EnsureAllDIEsInDeclContextHaveBeenParsed
void EnsureAllDIEsInDeclContextHaveBeenParsed(lldb_private::CompilerDeclContext decl_context) override
Definition: DWARFASTParserClang.cpp:2131
lldb_private::CompilerType::GetTypeName
ConstString GetTypeName() const
Definition: CompilerType.cpp:277
lldb_private::Type
Definition: Type.h:66
DWARFASTParserClang::CompleteTypeFromDWARF
bool CompleteTypeFromDWARF(const DWARFDIE &die, lldb_private::Type *type, lldb_private::CompilerType &compiler_type) override
Definition: DWARFASTParserClang.cpp:2091
RequireCompleteType
static void RequireCompleteType(CompilerType type)
Complete a type from debug info, or mark it as forcefully completed if there is no definition of the ...
Definition: DWARFASTParserClang.cpp:246
DWARFBaseDIE::GetOffset
dw_offset_t GetOffset() const
Definition: DWARFBaseDIE.cpp:85
DWARFASTParserClang::m_ast
lldb_private::TypeSystemClang & m_ast
Definition: DWARFASTParserClang.h:88
lldb_private::CompilerType::IsArrayType
bool IsArrayType(CompilerType *element_type=nullptr, uint64_t *size=nullptr, bool *is_incomplete=nullptr) const
Definition: CompilerType.cpp:49
lldb_private::Address::ResolveAddressUsingFileSections
bool ResolveAddressUsingFileSections(lldb::addr_t addr, const SectionList *sections)
Resolve a file virtual address using a section list.
Definition: Address.cpp:247
DWARFDIE::GetDIE
DWARFDIE GetDIE(dw_offset_t die_offset) const
Definition: DWARFDIE.cpp:122
lldb_private::TypeSystemClang::CreateFunctionTemplateDecl
clang::FunctionTemplateDecl * CreateFunctionTemplateDecl(clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, clang::FunctionDecl *func_decl, const TemplateParameterInfos &infos)
Definition: TypeSystemClang.cpp:1424
lldb_private::Type::GetForwardCompilerType
CompilerType GetForwardCompilerType()
Definition: Type.cpp:658
DWARFASTParserClang::ParseEnum
lldb::TypeSP ParseEnum(const lldb_private::SymbolContext &sc, const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:772
UINT32_MAX
#define UINT32_MAX
Definition: lldb-defines.h:31
lldb_private::TypeSystemClang::GetAsRecordDecl
static clang::RecordDecl * GetAsRecordDecl(const CompilerType &type)
Definition: TypeSystemClang.cpp:7128
DWARFASTParserClang::ParseArrayType
lldb::TypeSP ParseArrayType(const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:1303
lldb_private::ModuleChild::GetModule
lldb::ModuleSP GetModule() const
Get const accessor for the module pointer.
Definition: ModuleChild.cpp:24
lldb_private::SymbolContext::module_sp
lldb::ModuleSP module_sp
The Module for a given query.
Definition: SymbolContext.h:318
uint16_t
lldb::eBasicTypeNullPtr
@ eBasicTypeNullPtr
Definition: lldb-enumerations.h:772
DWARFBaseDIE::GetID
lldb::user_id_t GetID() const
Definition: DWARFBaseDIE.cpp:64
lldb_private::ClangASTImporter
Manages and observes all Clang AST node importing in LLDB.
Definition: ClangASTImporter.h:64
lldb_private::AddressRange::SetByteSize
void SetByteSize(lldb::addr_t byte_size)
Set accessor for the byte size of this range.
Definition: AddressRange.h:237
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Invalid value definitions.
Definition: lldb-defines.h:85
lldb_private::ConstString::GetCString
const char * GetCString() const
Get the string value as a C string.
Definition: ConstString.h:216
DWARFFormValue::AsCString
const char * AsCString() const
Definition: DWARFFormValue.cpp:458
lldb_private::TypeSystemClang::CreateRecordType
CompilerType CreateRecordType(clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, lldb::AccessType access_type, llvm::StringRef name, int kind, lldb::LanguageType language, ClangASTMetadata *metadata=nullptr, bool exports_symbols=false)
Definition: TypeSystemClang.cpp:1284
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dw_attr_t AttributeAtIndex(uint32_t i) const
Definition: DWARFAttribute.h:55
lldb_private::CompilerType
Generic representation of a type in a programming language.
Definition: CompilerType.h:33
Function.h
lldb_private::SymbolFile::ArrayInfo::element_orders
llvm::SmallVector< uint64_t, 1 > element_orders
Definition: SymbolFile.h:187
ParsedDWARFTypeAttributes::specification
DWARFFormValue specification
Definition: DWARFASTParserClang.h:247
lldb_private::Stream::Printf
size_t Printf(const char *format,...) __attribute__((format(printf
Output printf formatted output to the stream.
Definition: Stream.cpp:107
ParsedDWARFTypeAttributes::decl
lldb_private::Declaration decl
Definition: DWARFASTParserClang.h:242
DWARFASTParserClang::ResolveBlockDIE
clang::BlockDecl * ResolveBlockDIE(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3394
lldb_private::TypeSystemClang::TemplateParameterInfos::args
llvm::SmallVector< clang::TemplateArgument, 2 > args
Definition: TypeSystemClang.h:332
lldb::user_id_t
uint64_t user_id_t
Definition: lldb-types.h:84
ParsedDWARFTypeAttributes::containing_type
DWARFFormValue containing_type
Definition: DWARFASTParserClang.h:245
DWARFDeclContext
Definition: DWARFDeclContext.h:23
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
PrepareContextToReceiveMembers
static void PrepareContextToReceiveMembers(TypeSystemClang &ast, ClangASTImporter &ast_importer, clang::DeclContext *decl_ctx, DWARFDIE die, const char *type_name_cstr)
This function serves a similar purpose as RequireCompleteType above, but it avoids completing the typ...
Definition: DWARFASTParserClang.cpp:267
DWARFASTParserClang::ParseSubroutine
lldb::TypeSP ParseSubroutine(const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:880
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Block * FindBlockByID(lldb::user_id_t block_id)
Definition: Block.cpp:111
GetContainingFunctionWithAbstractOrigin
static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3341
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Definition: TypeList.h:20
lldb_private::ObjCLanguage::MethodName::IsValid
bool IsValid(bool strict) const
Definition: ObjCLanguage.h:47
lldb_private::TypeSystemClang::GetBasicType
CompilerType GetBasicType(lldb::BasicType type)
Definition: TypeSystemClang.cpp:940
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The characteristics of an array type.
Definition: SymbolFile.h:185
DWARFASTParserClang::DelayedAddObjCClassProperty::DelayedAddObjCClassProperty
DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs)
Definition: DWARFASTParserClang.cpp:1780
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Definition: TypeSystemClang.cpp:1842
lldb_private::TypeSystemClang
A TypeSystem implementation based on Clang.
Definition: TypeSystemClang.h:106
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bool IsBeingDefined() const
Definition: CompilerType.cpp:256
DWARFASTParserClang::ParseTemplateDIE
bool ParseTemplateDIE(const DWARFDIE &die, lldb_private::TypeSystemClang::TemplateParameterInfos &template_param_infos)
Definition: DWARFASTParserClang.cpp:1819
DWARFDIE::GetSibling
DWARFDIE GetSibling() const
Definition: DWARFDIE.cpp:106
DWARF_LOG_TYPE_COMPLETION
#define DWARF_LOG_TYPE_COMPLETION
Definition: LogChannelDWARF.h:17
ClangASTImporter.h
lldb_private::TypeSystemClang::AddEnumerationValueToEnumerationType
clang::EnumConstantDecl * AddEnumerationValueToEnumerationType(const CompilerType &enum_type, const Declaration &decl, const char *name, int64_t enum_value, uint32_t enum_value_bit_size)
Definition: TypeSystemClang.cpp:8250
lldb_private::DataExtractor::GetData
const void * GetData(lldb::offset_t *offset_ptr, lldb::offset_t length) const
Extract length bytes from *offset_ptr.
Definition: DataExtractor.h:326
lldb_private::LanguageSet
A SmallBitVector that represents a set of source languages (lldb::LanguageType).
Definition: TypeSystem.h:40
ParsedDWARFTypeAttributes::is_scoped_enum
bool is_scoped_enum
Definition: DWARFASTParserClang.h:234
DWARFASTParserClang::GetOwningClangModule
lldb_private::OptionalClangModuleID GetOwningClangModule(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3306
DWARFASTParserClang::ParseTypeFromClangModule
lldb::TypeSP ParseTypeFromClangModule(const lldb_private::SymbolContext &sc, const DWARFDIE &die, lldb_private::Log *log)
Follow Clang Module Skeleton CU references to find a type definition.
Definition: DWARFASTParserClang.cpp:144
lldb_private::TypeSystemClang::SetHasExternalStorage
static bool SetHasExternalStorage(lldb::opaque_compiler_type_t type, bool has_extern)
Definition: TypeSystemClang.cpp:8045
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Definition: TypeSystemClang.h:320
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@ eBasicTypeObjCSel
Definition: lldb-enumerations.h:771
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Definition: Log.h:49
DWARFASTParserClang::GetDeclContextForBlock
clang::DeclContext * GetDeclContextForBlock(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3380
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SymbolFileDWARF & GetSymbolFileDWARF() const
Definition: DWARFUnit.h:193
lldb_private::TypeSystemClang::AddMethodToCXXRecordType
clang::CXXMethodDecl * AddMethodToCXXRecordType(lldb::opaque_compiler_type_t type, llvm::StringRef name, const char *mangled_name, const CompilerType &method_type, lldb::AccessType access, bool is_virtual, bool is_static, bool is_inline, bool is_explicit, bool is_attr_used, bool is_artificial)
Definition: TypeSystemClang.cpp:7442
DWARFASTParserClang::DelayedAddObjCClassProperty::m_property_name
const char * m_property_name
Definition: DWARFASTParserClang.cpp:1810
ParsedDWARFTypeAttributes::is_artificial
bool is_artificial
Definition: DWARFASTParserClang.h:229
ParsedDWARFTypeAttributes::object_pointer
DWARFDIE object_pointer
Definition: DWARFASTParserClang.h:243
DWARFASTParserClang::m_decl_ctx_to_die
DeclContextToDIEMap m_decl_ctx_to_die
Definition: DWARFASTParserClang.h:92
lldb_private::TypeSystemClang::AddMethodToObjCObjectType
static clang::ObjCMethodDecl * AddMethodToObjCObjectType(const CompilerType &type, const char *name, const CompilerType &method_compiler_type, lldb::AccessType access, bool is_artificial, bool is_variadic, bool is_objc_direct_call)
Definition: TypeSystemClang.cpp:7911
lldb_private::TypeSystemClang::GetDeclContextForType
static clang::DeclContext * GetDeclContextForType(clang::QualType type)
Definition: TypeSystemClang.cpp:2548
lldb_private::ClangASTImporter::CanImport
bool CanImport(const CompilerType &type)
Returns true iff the given type was copied from another TypeSystemClang and the original type in this...
Definition: ClangASTImporter.cpp:358
DWARFASTParserClang::DWARFASTParserClang
DWARFASTParserClang(lldb_private::TypeSystemClang &ast)
Definition: DWARFASTParserClang.cpp:60
ParsedDWARFTypeAttributes::ParsedDWARFTypeAttributes
ParsedDWARFTypeAttributes(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:302
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Definition: Declaration.h:24
DWARFAttributes::CompileUnitAtIndex
DWARFUnit * CompileUnitAtIndex(uint32_t i) const
Definition: DWARFAttribute.h:51
lldb_private::DWARFExpression::IsValid
bool IsValid() const
Return true if the location expression contains data.
Definition: DWARFExpression.cpp:74
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@ eByteOrderLittle
Definition: lldb-enumerations.h:142
DW_ACCESS_to_AccessType
static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility)
Definition: DWARFASTParserClang.cpp:65
lldb_private::TypeSystemClang::CreateUsingDeclaration
clang::UsingDecl * CreateUsingDeclaration(clang::DeclContext *current_decl_ctx, OptionalClangModuleID owning_module, clang::NamedDecl *target)
Definition: TypeSystemClang.cpp:1861
ParsedDWARFTypeAttributes::exports_symbols
bool exports_symbols
Definition: DWARFASTParserClang.h:238
lldb_private::TypeSystemClang::CreateClassTemplateSpecializationDecl
clang::ClassTemplateSpecializationDecl * CreateClassTemplateSpecializationDecl(clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, clang::ClassTemplateDecl *class_template_decl, int kind, const TemplateParameterInfos &infos)
Definition: TypeSystemClang.cpp:1554
lldb_private::TypeSystemClang::SetTagTypeKind
bool SetTagTypeKind(clang::QualType type, int kind) const
Definition: TypeSystemClang.cpp:2474
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uint32_t bit_stride
Definition: SymbolFile.h:189
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Definition: SBAddress.h:15
DWARFBaseDIE::Tag
dw_tag_t Tag() const
Definition: DWARFBaseDIE.cpp:29
Value.h
lldb_private::TypeSystemClang::CreateFunctionTemplateSpecializationInfo
void CreateFunctionTemplateSpecializationInfo(clang::FunctionDecl *func_decl, clang::FunctionTemplateDecl *Template, const TemplateParameterInfos &infos)
Definition: TypeSystemClang.cpp:1456
lldb_private::Type::GetFullCompilerType
CompilerType GetFullCompilerType()
Definition: Type.cpp:648
lldb_private::TypeSystemClang::SetMetadataAsUserID
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Definition: TypeSystemClang.cpp:2436
DWARFASTParserClang::CompleteEnumType
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Definition: DWARFASTParserClang.cpp:2076
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AccessType
Definition: lldb-enumerations.h:507
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DWARFASTParserClang::ParsePointerToMemberType
lldb::TypeSP ParsePointerToMemberType(const DWARFDIE &die, const ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:1356
DWARFASTParserClang::ParseChildEnumerators
size_t ParseChildEnumerators(lldb_private::CompilerType &compiler_type, bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die)
Definition: DWARFASTParserClang.cpp:2167
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bool HasChildren() const
Definition: DWARFBaseDIE.cpp:99
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Definition: TypeSystemClang.cpp:7643
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Definition: ObjectFile.h:58
lldb_private::ClangASTImporter::LayoutInfo::bit_size
uint64_t bit_size
Definition: ClangASTImporter.h:71
DWARFASTParserClang::m_clang_ast_importer_up
std::unique_ptr< lldb_private::ClangASTImporter > m_clang_ast_importer_up
Definition: DWARFASTParserClang.h:94
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bool is_virtual
Definition: DWARFASTParserClang.h:236
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bool IsValid() const
Definition: DWARFFormValue.h:70
UINT64_MAX
#define UINT64_MAX
Definition: lldb-defines.h:35
DWARFUnit::GetFile
lldb_private::FileSpec GetFile(size_t file_idx)
Definition: DWARFUnit.cpp:701
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llvm::SmallVector< const char *, 2 > names
Definition: TypeSystemClang.h:331
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bool IsValid() const
Definition: DWARFBaseDIE.h:45
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std::unique_ptr< TemplateParameterInfos > packed_args
Definition: TypeSystemClang.h:335
lldb_private::TypeSystemClang::CreateFunctionType
CompilerType CreateFunctionType(const CompilerType &result_type, const CompilerType *args, unsigned num_args, bool is_variadic, unsigned type_quals, clang::CallingConv cc)
Definition: TypeSystemClang.cpp:2062