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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 <cstdlib>
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 <cstdio>
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;
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.children()) {
670  if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""),
671  "__FuncPtr")) {
672  DWARFDIE function_pointer_type =
673  child_die.GetReferencedDIE(DW_AT_type);
674 
675  if (function_pointer_type) {
676  DWARFDIE function_type =
677  function_pointer_type.GetReferencedDIE(DW_AT_type);
678 
679  bool function_type_is_new_pointer;
680  TypeSP lldb_function_type_sp = ParseTypeFromDWARF(
681  sc, function_type, &function_type_is_new_pointer);
682 
683  if (lldb_function_type_sp) {
684  clang_type = m_ast.CreateBlockPointerType(
685  lldb_function_type_sp->GetForwardCompilerType());
686  encoding_data_type = Type::eEncodingIsUID;
687  attrs.type.Clear();
688  resolve_state = Type::ResolveState::Full;
689  }
690  }
691 
692  break;
693  }
694  }
695  }
696  }
697 
698  if (cu_language == eLanguageTypeObjC ||
699  cu_language == eLanguageTypeObjC_plus_plus) {
700  if (attrs.name) {
701  if (attrs.name == "id") {
702  if (log)
703  dwarf->GetObjectFile()->GetModule()->LogMessage(
704  log,
705  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
706  "is Objective-C 'id' built-in type.",
707  die.GetOffset(), die.GetTagAsCString(), die.GetName());
708  clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
709  encoding_data_type = Type::eEncodingIsUID;
710  attrs.type.Clear();
711  resolve_state = Type::ResolveState::Full;
712  } else if (attrs.name == "Class") {
713  if (log)
714  dwarf->GetObjectFile()->GetModule()->LogMessage(
715  log,
716  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
717  "is Objective-C 'Class' built-in type.",
718  die.GetOffset(), die.GetTagAsCString(), die.GetName());
719  clang_type = m_ast.GetBasicType(eBasicTypeObjCClass);
720  encoding_data_type = Type::eEncodingIsUID;
721  attrs.type.Clear();
722  resolve_state = Type::ResolveState::Full;
723  } else if (attrs.name == "SEL") {
724  if (log)
725  dwarf->GetObjectFile()->GetModule()->LogMessage(
726  log,
727  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
728  "is Objective-C 'selector' built-in type.",
729  die.GetOffset(), die.GetTagAsCString(), die.GetName());
730  clang_type = m_ast.GetBasicType(eBasicTypeObjCSel);
731  encoding_data_type = Type::eEncodingIsUID;
732  attrs.type.Clear();
733  resolve_state = Type::ResolveState::Full;
734  }
735  } else if (encoding_data_type == Type::eEncodingIsPointerUID &&
736  attrs.type.IsValid()) {
737  // Clang sometimes erroneously emits id as objc_object*. In that
738  // case we fix up the type to "id".
739 
740  const DWARFDIE encoding_die = attrs.type.Reference();
741 
742  if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) {
743  llvm::StringRef struct_name = encoding_die.GetName();
744  if (struct_name == "objc_object") {
745  if (log)
746  dwarf->GetObjectFile()->GetModule()->LogMessage(
747  log,
748  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s "
749  "'%s' is 'objc_object*', which we overrode to "
750  "'id'.",
751  die.GetOffset(), die.GetTagAsCString(), die.GetName());
752  clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
753  encoding_data_type = Type::eEncodingIsUID;
754  attrs.type.Clear();
755  resolve_state = Type::ResolveState::Full;
756  }
757  }
758  }
759  }
760  }
761 
762  type_sp = std::make_shared<Type>(
763  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
764  dwarf->GetUID(attrs.type.Reference()), encoding_data_type, &attrs.decl,
765  clang_type, resolve_state, TypePayloadClang(GetOwningClangModule(die)));
766 
767  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
768  return type_sp;
769 }
770 
772  const DWARFDIE &die,
773  ParsedDWARFTypeAttributes &attrs) {
774  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
776  SymbolFileDWARF *dwarf = die.GetDWARF();
777  const dw_tag_t tag = die.Tag();
778  TypeSP type_sp;
779 
780  if (attrs.is_forward_declaration) {
781  type_sp = ParseTypeFromClangModule(sc, die, log);
782  if (type_sp)
783  return type_sp;
784 
786 
787  type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
788 
789  if (!type_sp) {
790  SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile();
791  if (debug_map_symfile) {
792  // We weren't able to find a full declaration in this DWARF,
793  // see if we have a declaration anywhere else...
794  type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
795  die_decl_ctx);
796  }
797  }
798 
799  if (type_sp) {
800  if (log) {
801  dwarf->GetObjectFile()->GetModule()->LogMessage(
802  log,
803  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
804  "forward declaration, complete type is 0x%8.8" PRIx64,
805  static_cast<void *>(this), die.GetOffset(),
806  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
807  type_sp->GetID());
808  }
809 
810  // We found a real definition for this type elsewhere so lets use
811  // it and cache the fact that we found a complete type for this
812  // die
813  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
814  clang::DeclContext *defn_decl_ctx =
815  GetCachedClangDeclContextForDIE(dwarf->GetDIE(type_sp->GetID()));
816  if (defn_decl_ctx)
817  LinkDeclContextToDIE(defn_decl_ctx, die);
818  return type_sp;
819  }
820  }
821  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
822  DW_TAG_value_to_name(tag), type_name_cstr);
823 
824  CompilerType enumerator_clang_type;
825  CompilerType clang_type;
826  clang_type.SetCompilerType(
827  &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
828  if (!clang_type) {
829  if (attrs.type.IsValid()) {
830  Type *enumerator_type =
831  dwarf->ResolveTypeUID(attrs.type.Reference(), true);
832  if (enumerator_type)
833  enumerator_clang_type = enumerator_type->GetFullCompilerType();
834  }
835 
836  if (!enumerator_clang_type) {
837  if (attrs.byte_size) {
838  enumerator_clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(
839  "", DW_ATE_signed, *attrs.byte_size * 8);
840  } else {
841  enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt);
842  }
843  }
844 
845  clang_type = m_ast.CreateEnumerationType(
846  attrs.name.GetCString(), GetClangDeclContextContainingDIE(die, nullptr),
847  GetOwningClangModule(die), attrs.decl, enumerator_clang_type,
848  attrs.is_scoped_enum);
849  } else {
850  enumerator_clang_type = m_ast.GetEnumerationIntegerType(clang_type);
851  }
852 
853  LinkDeclContextToDIE(TypeSystemClang::GetDeclContextForType(clang_type), die);
854 
855  type_sp = std::make_shared<Type>(
856  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
857  dwarf->GetUID(attrs.type.Reference()), Type::eEncodingIsUID, &attrs.decl,
858  clang_type, Type::ResolveState::Forward,
860 
861  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
862  if (die.HasChildren()) {
863  bool is_signed = false;
864  enumerator_clang_type.IsIntegerType(is_signed);
865  ParseChildEnumerators(clang_type, is_signed,
866  type_sp->GetByteSize(nullptr).getValueOr(0), die);
867  }
868  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
869  } else {
870  dwarf->GetObjectFile()->GetModule()->ReportError(
871  "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
872  "definition.\nPlease file a bug and attach the file at the "
873  "start of this error message",
874  die.GetOffset(), attrs.name.GetCString());
875  }
876  return type_sp;
877 }
878 
880  ParsedDWARFTypeAttributes &attrs) {
881  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
883 
884  SymbolFileDWARF *dwarf = die.GetDWARF();
885  const dw_tag_t tag = die.Tag();
886 
887  bool is_variadic = false;
888  bool is_static = false;
889  bool has_template_params = false;
890 
891  unsigned type_quals = 0;
892 
893  std::string object_pointer_name;
894  if (attrs.object_pointer) {
895  const char *object_pointer_name_cstr = attrs.object_pointer.GetName();
896  if (object_pointer_name_cstr)
897  object_pointer_name = object_pointer_name_cstr;
898  }
899 
900  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
901  DW_TAG_value_to_name(tag), type_name_cstr);
902 
903  CompilerType return_clang_type;
904  Type *func_type = NULL;
905 
906  if (attrs.type.IsValid())
907  func_type = dwarf->ResolveTypeUID(attrs.type.Reference(), true);
908 
909  if (func_type)
910  return_clang_type = func_type->GetForwardCompilerType();
911  else
912  return_clang_type = m_ast.GetBasicType(eBasicTypeVoid);
913 
914  std::vector<CompilerType> function_param_types;
915  std::vector<clang::ParmVarDecl *> function_param_decls;
916 
917  // Parse the function children for the parameters
918 
919  DWARFDIE decl_ctx_die;
920  clang::DeclContext *containing_decl_ctx =
921  GetClangDeclContextContainingDIE(die, &decl_ctx_die);
922  const clang::Decl::Kind containing_decl_kind =
923  containing_decl_ctx->getDeclKind();
924 
925  bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind);
926  // Start off static. This will be set to false in
927  // ParseChildParameters(...) if we find a "this" parameters as the
928  // first parameter
929  if (is_cxx_method) {
930  is_static = true;
931  }
932 
933  if (die.HasChildren()) {
934  bool skip_artificial = true;
935  ParseChildParameters(containing_decl_ctx, die, skip_artificial, is_static,
936  is_variadic, has_template_params,
937  function_param_types, function_param_decls,
938  type_quals);
939  }
940 
941  bool ignore_containing_context = false;
942  // Check for templatized class member functions. If we had any
943  // DW_TAG_template_type_parameter or DW_TAG_template_value_parameter
944  // the DW_TAG_subprogram DIE, then we can't let this become a method in
945  // a class. Why? Because templatized functions are only emitted if one
946  // of the templatized methods is used in the current compile unit and
947  // we will end up with classes that may or may not include these member
948  // functions and this means one class won't match another class
949  // definition and it affects our ability to use a class in the clang
950  // expression parser. So for the greater good, we currently must not
951  // allow any template member functions in a class definition.
952  if (is_cxx_method && has_template_params) {
953  ignore_containing_context = true;
954  is_cxx_method = false;
955  }
956 
957  // clang_type will get the function prototype clang type after this
958  // call
960  return_clang_type, function_param_types.data(),
961  function_param_types.size(), is_variadic, type_quals);
962 
963  if (attrs.name) {
964  bool type_handled = false;
965  if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) {
966  ObjCLanguage::MethodName objc_method(attrs.name.GetStringRef(), true);
967  if (objc_method.IsValid(true)) {
968  CompilerType class_opaque_type;
969  ConstString class_name(objc_method.GetClassName());
970  if (class_name) {
971  TypeSP complete_objc_class_type_sp(
972  dwarf->FindCompleteObjCDefinitionTypeForDIE(DWARFDIE(),
973  class_name, false));
974 
975  if (complete_objc_class_type_sp) {
976  CompilerType type_clang_forward_type =
977  complete_objc_class_type_sp->GetForwardCompilerType();
978  if (TypeSystemClang::IsObjCObjectOrInterfaceType(
979  type_clang_forward_type))
980  class_opaque_type = type_clang_forward_type;
981  }
982  }
983 
984  if (class_opaque_type) {
985  // If accessibility isn't set to anything valid, assume public
986  // for now...
987  if (attrs.accessibility == eAccessNone)
989 
990  clang::ObjCMethodDecl *objc_method_decl =
992  class_opaque_type, attrs.name.GetCString(), clang_type,
993  attrs.accessibility, attrs.is_artificial, is_variadic,
994  attrs.is_objc_direct_call);
995  type_handled = objc_method_decl != NULL;
996  if (type_handled) {
997  LinkDeclContextToDIE(objc_method_decl, die);
998  m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID());
999  } else {
1000  dwarf->GetObjectFile()->GetModule()->ReportError(
1001  "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), "
1002  "please file a bug and attach the file at the start of "
1003  "this error message",
1004  die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1005  }
1006  }
1007  } else if (is_cxx_method) {
1008  // Look at the parent of this DIE and see if is is a class or
1009  // struct and see if this is actually a C++ method
1010  Type *class_type = dwarf->ResolveType(decl_ctx_die);
1011  if (class_type) {
1012  bool alternate_defn = false;
1013  if (class_type->GetID() != decl_ctx_die.GetID() ||
1014  IsClangModuleFwdDecl(decl_ctx_die)) {
1015  alternate_defn = true;
1016 
1017  // We uniqued the parent class of this function to another
1018  // class so we now need to associate all dies under
1019  // "decl_ctx_die" to DIEs in the DIE for "class_type"...
1020  DWARFDIE class_type_die = dwarf->GetDIE(class_type->GetID());
1021 
1022  if (class_type_die) {
1023  std::vector<DWARFDIE> failures;
1024 
1025  CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die,
1026  class_type, failures);
1027 
1028  // FIXME do something with these failures that's
1029  // smarter than just dropping them on the ground.
1030  // Unfortunately classes don't like having stuff added
1031  // to them after their definitions are complete...
1032 
1033  Type *type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1034  if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) {
1035  return type_ptr->shared_from_this();
1036  }
1037  }
1038  }
1039 
1040  if (attrs.specification.IsValid()) {
1041  // We have a specification which we are going to base our
1042  // function prototype off of, so we need this type to be
1043  // completed so that the m_die_to_decl_ctx for the method in
1044  // the specification has a valid clang decl context.
1045  class_type->GetForwardCompilerType();
1046  // If we have a specification, then the function type should
1047  // have been made with the specification and not with this
1048  // die.
1049  DWARFDIE spec_die = attrs.specification.Reference();
1050  clang::DeclContext *spec_clang_decl_ctx =
1051  GetClangDeclContextForDIE(spec_die);
1052  if (spec_clang_decl_ctx) {
1053  LinkDeclContextToDIE(spec_clang_decl_ctx, die);
1054  } else {
1055  dwarf->GetObjectFile()->GetModule()->ReportWarning(
1056  "0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x"
1057  ") has no decl\n",
1058  die.GetID(), spec_die.GetOffset());
1059  }
1060  type_handled = true;
1061  } else if (attrs.abstract_origin.IsValid()) {
1062  // We have a specification which we are going to base our
1063  // function prototype off of, so we need this type to be
1064  // completed so that the m_die_to_decl_ctx for the method in
1065  // the abstract origin has a valid clang decl context.
1066  class_type->GetForwardCompilerType();
1067 
1068  DWARFDIE abs_die = attrs.abstract_origin.Reference();
1069  clang::DeclContext *abs_clang_decl_ctx =
1070  GetClangDeclContextForDIE(abs_die);
1071  if (abs_clang_decl_ctx) {
1072  LinkDeclContextToDIE(abs_clang_decl_ctx, die);
1073  } else {
1074  dwarf->GetObjectFile()->GetModule()->ReportWarning(
1075  "0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x"
1076  ") has no decl\n",
1077  die.GetID(), abs_die.GetOffset());
1078  }
1079  type_handled = true;
1080  } else {
1081  CompilerType class_opaque_type =
1082  class_type->GetForwardCompilerType();
1083  if (TypeSystemClang::IsCXXClassType(class_opaque_type)) {
1084  if (class_opaque_type.IsBeingDefined() || alternate_defn) {
1085  if (!is_static && !die.HasChildren()) {
1086  // We have a C++ member function with no children (this
1087  // pointer!) and clang will get mad if we try and make
1088  // a function that isn't well formed in the DWARF, so
1089  // we will just skip it...
1090  type_handled = true;
1091  } else {
1092  bool add_method = true;
1093  if (alternate_defn) {
1094  // If an alternate definition for the class exists,
1095  // then add the method only if an equivalent is not
1096  // already present.
1097  clang::CXXRecordDecl *record_decl =
1099  class_opaque_type.GetOpaqueQualType());
1100  if (record_decl) {
1101  for (auto method_iter = record_decl->method_begin();
1102  method_iter != record_decl->method_end();
1103  method_iter++) {
1104  clang::CXXMethodDecl *method_decl = *method_iter;
1105  if (method_decl->getNameInfo().getAsString() ==
1106  attrs.name.GetStringRef()) {
1107  if (method_decl->getType() ==
1108  ClangUtil::GetQualType(clang_type)) {
1109  add_method = false;
1110  LinkDeclContextToDIE(method_decl, die);
1111  type_handled = true;
1112 
1113  break;
1114  }
1115  }
1116  }
1117  }
1118  }
1119 
1120  if (add_method) {
1121  llvm::PrettyStackTraceFormat stack_trace(
1122  "SymbolFileDWARF::ParseType() is adding a method "
1123  "%s to class %s in DIE 0x%8.8" PRIx64 " from %s",
1124  attrs.name.GetCString(),
1125  class_type->GetName().GetCString(), die.GetID(),
1126  dwarf->GetObjectFile()
1127  ->GetFileSpec()
1128  .GetPath()
1129  .c_str());
1130 
1131  const bool is_attr_used = false;
1132  // Neither GCC 4.2 nor clang++ currently set a valid
1133  // accessibility in the DWARF for C++ methods...
1134  // Default to public for now...
1135  if (attrs.accessibility == eAccessNone)
1136  attrs.accessibility = eAccessPublic;
1137 
1138  clang::CXXMethodDecl *cxx_method_decl =
1140  class_opaque_type.GetOpaqueQualType(),
1141  attrs.name.GetCString(), attrs.mangled_name,
1142  clang_type, attrs.accessibility, attrs.is_virtual,
1143  is_static, attrs.is_inline, attrs.is_explicit,
1144  is_attr_used, attrs.is_artificial);
1145 
1146  type_handled = cxx_method_decl != NULL;
1147  // Artificial methods are always handled even when we
1148  // don't create a new declaration for them.
1149  type_handled |= attrs.is_artificial;
1150 
1151  if (cxx_method_decl) {
1152  LinkDeclContextToDIE(cxx_method_decl, die);
1153 
1154  ClangASTMetadata metadata;
1155  metadata.SetUserID(die.GetID());
1156 
1157  if (!object_pointer_name.empty()) {
1158  metadata.SetObjectPtrName(
1159  object_pointer_name.c_str());
1160  LLDB_LOGF(log,
1161  "Setting object pointer name: %s on method "
1162  "object %p.\n",
1163  object_pointer_name.c_str(),
1164  static_cast<void *>(cxx_method_decl));
1165  }
1166  m_ast.SetMetadata(cxx_method_decl, metadata);
1167  } else {
1168  ignore_containing_context = true;
1169  }
1170  }
1171  }
1172  } else {
1173  // We were asked to parse the type for a method in a
1174  // class, yet the class hasn't been asked to complete
1175  // itself through the clang::ExternalASTSource protocol,
1176  // so we need to just have the class complete itself and
1177  // do things the right way, then our
1178  // DIE should then have an entry in the
1179  // dwarf->GetDIEToType() map. First
1180  // we need to modify the dwarf->GetDIEToType() so it
1181  // doesn't think we are trying to parse this DIE
1182  // anymore...
1183  dwarf->GetDIEToType()[die.GetDIE()] = NULL;
1184 
1185  // Now we get the full type to force our class type to
1186  // complete itself using the clang::ExternalASTSource
1187  // protocol which will parse all base classes and all
1188  // methods (including the method for this DIE).
1189  class_type->GetFullCompilerType();
1190 
1191  // The type for this DIE should have been filled in the
1192  // function call above
1193  Type *type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1194  if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) {
1195  return type_ptr->shared_from_this();
1196  }
1197 
1198  // FIXME This is fixing some even uglier behavior but we
1199  // really need to
1200  // uniq the methods of each class as well as the class
1201  // itself. <rdar://problem/11240464>
1202  type_handled = true;
1203  }
1204  }
1205  }
1206  }
1207  }
1208  }
1209 
1210  if (!type_handled) {
1211  clang::FunctionDecl *function_decl = nullptr;
1212  clang::FunctionDecl *template_function_decl = nullptr;
1213 
1214  if (attrs.abstract_origin.IsValid()) {
1215  DWARFDIE abs_die = attrs.abstract_origin.Reference();
1216 
1217  if (dwarf->ResolveType(abs_die)) {
1218  function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(
1220 
1221  if (function_decl) {
1222  LinkDeclContextToDIE(function_decl, die);
1223  }
1224  }
1225  }
1226 
1227  if (!function_decl) {
1228  char *name_buf = nullptr;
1229  llvm::StringRef name = attrs.name.GetStringRef();
1230 
1231  // We currently generate function templates with template parameters in
1232  // their name. In order to get closer to the AST that clang generates
1233  // we want to strip these from the name when creating the AST.
1234  if (attrs.mangled_name) {
1235  llvm::ItaniumPartialDemangler D;
1236  if (!D.partialDemangle(attrs.mangled_name)) {
1237  name_buf = D.getFunctionBaseName(nullptr, nullptr);
1238  name = name_buf;
1239  }
1240  }
1241 
1242  // We just have a function that isn't part of a class
1243  function_decl = m_ast.CreateFunctionDeclaration(
1244  ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1245  : containing_decl_ctx,
1246  GetOwningClangModule(die), name, clang_type, attrs.storage,
1247  attrs.is_inline);
1248  std::free(name_buf);
1249 
1250  if (has_template_params) {
1251  TypeSystemClang::TemplateParameterInfos template_param_infos;
1252  ParseTemplateParameterInfos(die, template_param_infos);
1253  template_function_decl = m_ast.CreateFunctionDeclaration(
1254  ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1255  : containing_decl_ctx,
1256  GetOwningClangModule(die), attrs.name.GetStringRef(), clang_type,
1257  attrs.storage, attrs.is_inline);
1258  clang::FunctionTemplateDecl *func_template_decl =
1260  containing_decl_ctx, GetOwningClangModule(die),
1261  template_function_decl, template_param_infos);
1263  template_function_decl, func_template_decl, template_param_infos);
1264  }
1265 
1266  lldbassert(function_decl);
1267 
1268  if (function_decl) {
1269  LinkDeclContextToDIE(function_decl, die);
1270 
1271  if (!function_param_decls.empty()) {
1272  m_ast.SetFunctionParameters(function_decl, function_param_decls);
1273  if (template_function_decl)
1274  m_ast.SetFunctionParameters(template_function_decl,
1275  function_param_decls);
1276  }
1277 
1278  ClangASTMetadata metadata;
1279  metadata.SetUserID(die.GetID());
1280 
1281  if (!object_pointer_name.empty()) {
1282  metadata.SetObjectPtrName(object_pointer_name.c_str());
1283  LLDB_LOGF(log,
1284  "Setting object pointer name: %s on function "
1285  "object %p.",
1286  object_pointer_name.c_str(),
1287  static_cast<void *>(function_decl));
1288  }
1289  m_ast.SetMetadata(function_decl, metadata);
1290  }
1291  }
1292  }
1293  }
1294  return std::make_shared<Type>(
1295  die.GetID(), dwarf, attrs.name, llvm::None, nullptr, LLDB_INVALID_UID,
1296  Type::eEncodingIsUID, &attrs.decl, clang_type, Type::ResolveState::Full);
1297 }
1298 
1300  ParsedDWARFTypeAttributes &attrs) {
1301  SymbolFileDWARF *dwarf = die.GetDWARF();
1302 
1303  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1304  DW_TAG_value_to_name(tag), type_name_cstr);
1305 
1306  DWARFDIE type_die = attrs.type.Reference();
1307  Type *element_type = dwarf->ResolveTypeUID(type_die, true);
1308 
1309  if (!element_type)
1310  return nullptr;
1311 
1312  llvm::Optional<SymbolFile::ArrayInfo> array_info = ParseChildArrayInfo(die);
1313  if (array_info) {
1314  attrs.byte_stride = array_info->byte_stride;
1315  attrs.bit_stride = array_info->bit_stride;
1316  }
1317  if (attrs.byte_stride == 0 && attrs.bit_stride == 0)
1318  attrs.byte_stride = element_type->GetByteSize(nullptr).getValueOr(0);
1319  CompilerType array_element_type = element_type->GetForwardCompilerType();
1320  RequireCompleteType(array_element_type);
1321 
1322  uint64_t array_element_bit_stride =
1323  attrs.byte_stride * 8 + attrs.bit_stride;
1324  CompilerType clang_type;
1325  if (array_info && array_info->element_orders.size() > 0) {
1326  uint64_t num_elements = 0;
1327  auto end = array_info->element_orders.rend();
1328  for (auto pos = array_info->element_orders.rbegin(); pos != end; ++pos) {
1329  num_elements = *pos;
1330  clang_type = m_ast.CreateArrayType(array_element_type, num_elements,
1331  attrs.is_vector);
1332  array_element_type = clang_type;
1333  array_element_bit_stride = num_elements
1334  ? array_element_bit_stride * num_elements
1335  : array_element_bit_stride;
1336  }
1337  } else {
1338  clang_type =
1339  m_ast.CreateArrayType(array_element_type, 0, attrs.is_vector);
1340  }
1341  ConstString empty_name;
1342  TypeSP type_sp = std::make_shared<Type>(
1343  die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, nullptr,
1344  dwarf->GetUID(type_die), Type::eEncodingIsUID, &attrs.decl, clang_type,
1345  Type::ResolveState::Full);
1346  type_sp->SetEncodingType(element_type);
1347  const clang::Type *type = ClangUtil::GetQualType(clang_type).getTypePtr();
1348  m_ast.SetMetadataAsUserID(type, die.GetID());
1349  return type_sp;
1350 }
1351 
1353  const DWARFDIE &die, const ParsedDWARFTypeAttributes &attrs) {
1354  SymbolFileDWARF *dwarf = die.GetDWARF();
1355  Type *pointee_type = dwarf->ResolveTypeUID(attrs.type.Reference(), true);
1356  Type *class_type =
1357  dwarf->ResolveTypeUID(attrs.containing_type.Reference(), true);
1358 
1359  CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType();
1360  CompilerType class_clang_type = class_type->GetForwardCompilerType();
1361 
1362  CompilerType clang_type = TypeSystemClang::CreateMemberPointerType(
1363  class_clang_type, pointee_clang_type);
1364 
1365  if (llvm::Optional<uint64_t> clang_type_size =
1366  clang_type.GetByteSize(nullptr)) {
1367  return std::make_shared<Type>(die.GetID(), dwarf, attrs.name,
1368  *clang_type_size, nullptr, LLDB_INVALID_UID,
1369  Type::eEncodingIsUID, nullptr, clang_type,
1370  Type::ResolveState::Forward);
1371  }
1372  return nullptr;
1373 }
1374 
1376  const SymbolContext &sc, const DWARFDIE &die, TypeSP type_sp) {
1377  if (!type_sp)
1378  return type_sp;
1379 
1380  SymbolFileDWARF *dwarf = die.GetDWARF();
1381  TypeList &type_list = dwarf->GetTypeList();
1383  dw_tag_t sc_parent_tag = sc_parent_die.Tag();
1384 
1385  SymbolContextScope *symbol_context_scope = nullptr;
1386  if (sc_parent_tag == DW_TAG_compile_unit ||
1387  sc_parent_tag == DW_TAG_partial_unit) {
1388  symbol_context_scope = sc.comp_unit;
1389  } else if (sc.function != nullptr && sc_parent_die) {
1390  symbol_context_scope =
1391  sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID());
1392  if (symbol_context_scope == nullptr)
1393  symbol_context_scope = sc.function;
1394  } else {
1395  symbol_context_scope = sc.module_sp.get();
1396  }
1397 
1398  if (symbol_context_scope != nullptr)
1399  type_sp->SetSymbolContextScope(symbol_context_scope);
1400 
1401  // We are ready to put this type into the uniqued list up at the module
1402  // level.
1403  type_list.Insert(type_sp);
1404 
1405  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1406  return type_sp;
1407 }
1408 
1409 TypeSP
1411  const DWARFDIE &die,
1412  ParsedDWARFTypeAttributes &attrs) {
1413  TypeSP type_sp;
1414  CompilerType clang_type;
1415  const dw_tag_t tag = die.Tag();
1416  SymbolFileDWARF *dwarf = die.GetDWARF();
1417  LanguageType cu_language = SymbolFileDWARF::GetLanguage(*die.GetCU());
1418  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_TYPE_COMPLETION |
1420 
1421  // UniqueDWARFASTType is large, so don't create a local variables on the
1422  // stack, put it on the heap. This function is often called recursively and
1423  // clang isn't good at sharing the stack space for variables in different
1424  // blocks.
1425  auto unique_ast_entry_up = std::make_unique<UniqueDWARFASTType>();
1426 
1427  ConstString unique_typename(attrs.name);
1428  Declaration unique_decl(attrs.decl);
1429 
1430  if (attrs.name) {
1431  if (Language::LanguageIsCPlusPlus(cu_language)) {
1432  // For C++, we rely solely upon the one definition rule that says
1433  // only one thing can exist at a given decl context. We ignore the
1434  // file and line that things are declared on.
1435  std::string qualified_name;
1436  if (die.GetQualifiedName(qualified_name))
1437  unique_typename = ConstString(qualified_name);
1438  unique_decl.Clear();
1439  }
1440 
1441  if (dwarf->GetUniqueDWARFASTTypeMap().Find(
1442  unique_typename, die, unique_decl, attrs.byte_size.getValueOr(-1),
1443  *unique_ast_entry_up)) {
1444  type_sp = unique_ast_entry_up->m_type_sp;
1445  if (type_sp) {
1446  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1448  GetCachedClangDeclContextForDIE(unique_ast_entry_up->m_die), die);
1449  return type_sp;
1450  }
1451  }
1452  }
1453 
1454  DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1455  DW_TAG_value_to_name(tag), type_name_cstr);
1456 
1457  int tag_decl_kind = -1;
1458  AccessType default_accessibility = eAccessNone;
1459  if (tag == DW_TAG_structure_type) {
1460  tag_decl_kind = clang::TTK_Struct;
1461  default_accessibility = eAccessPublic;
1462  } else if (tag == DW_TAG_union_type) {
1463  tag_decl_kind = clang::TTK_Union;
1464  default_accessibility = eAccessPublic;
1465  } else if (tag == DW_TAG_class_type) {
1466  tag_decl_kind = clang::TTK_Class;
1467  default_accessibility = eAccessPrivate;
1468  }
1469 
1470  if (attrs.byte_size && *attrs.byte_size == 0 && attrs.name &&
1471  !die.HasChildren() && cu_language == eLanguageTypeObjC) {
1472  // Work around an issue with clang at the moment where forward
1473  // declarations for objective C classes are emitted as:
1474  // DW_TAG_structure_type [2]
1475  // DW_AT_name( "ForwardObjcClass" )
1476  // DW_AT_byte_size( 0x00 )
1477  // DW_AT_decl_file( "..." )
1478  // DW_AT_decl_line( 1 )
1479  //
1480  // Note that there is no DW_AT_declaration and there are no children,
1481  // and the byte size is zero.
1482  attrs.is_forward_declaration = true;
1483  }
1484 
1485  if (attrs.class_language == eLanguageTypeObjC ||
1487  if (!attrs.is_complete_objc_class &&
1489  // We have a valid eSymbolTypeObjCClass class symbol whose name
1490  // matches the current objective C class that we are trying to find
1491  // and this DIE isn't the complete definition (we checked
1492  // is_complete_objc_class above and know it is false), so the real
1493  // definition is in here somewhere
1494  type_sp =
1495  dwarf->FindCompleteObjCDefinitionTypeForDIE(die, attrs.name, true);
1496 
1497  if (!type_sp) {
1498  SymbolFileDWARFDebugMap *debug_map_symfile =
1499  dwarf->GetDebugMapSymfile();
1500  if (debug_map_symfile) {
1501  // We weren't able to find a full declaration in this DWARF,
1502  // see if we have a declaration anywhere else...
1503  type_sp = debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE(
1504  die, attrs.name, true);
1505  }
1506  }
1507 
1508  if (type_sp) {
1509  if (log) {
1510  dwarf->GetObjectFile()->GetModule()->LogMessage(
1511  log,
1512  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an "
1513  "incomplete objc type, complete type is 0x%8.8" PRIx64,
1514  static_cast<void *>(this), die.GetOffset(),
1515  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
1516  type_sp->GetID());
1517  }
1518 
1519  // We found a real definition for this type elsewhere so lets use
1520  // it and cache the fact that we found a complete type for this
1521  // die
1522  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1523  return type_sp;
1524  }
1525  }
1526  }
1527 
1528  if (attrs.is_forward_declaration) {
1529  // We have a forward declaration to a type and we need to try and
1530  // find a full declaration. We look in the current type index just in
1531  // case we have a forward declaration followed by an actual
1532  // declarations in the DWARF. If this fails, we need to look
1533  // elsewhere...
1534  if (log) {
1535  dwarf->GetObjectFile()->GetModule()->LogMessage(
1536  log,
1537  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1538  "forward declaration, trying to find complete type",
1539  static_cast<void *>(this), die.GetOffset(), DW_TAG_value_to_name(tag),
1540  attrs.name.GetCString());
1541  }
1542 
1543  // See if the type comes from a Clang module and if so, track down
1544  // that type.
1545  type_sp = ParseTypeFromClangModule(sc, die, log);
1546  if (type_sp)
1547  return type_sp;
1548 
1550 
1551  // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die,
1552  // type_name_const_str);
1553  type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
1554 
1555  if (!type_sp) {
1556  SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile();
1557  if (debug_map_symfile) {
1558  // We weren't able to find a full declaration in this DWARF, see
1559  // if we have a declaration anywhere else...
1560  type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
1561  die_decl_ctx);
1562  }
1563  }
1564 
1565  if (type_sp) {
1566  if (log) {
1567  dwarf->GetObjectFile()->GetModule()->LogMessage(
1568  log,
1569  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1570  "forward declaration, complete type is 0x%8.8" PRIx64,
1571  static_cast<void *>(this), die.GetOffset(),
1572  DW_TAG_value_to_name(tag), attrs.name.GetCString(),
1573  type_sp->GetID());
1574  }
1575 
1576  // We found a real definition for this type elsewhere so lets use
1577  // it and cache the fact that we found a complete type for this die
1578  dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1579  clang::DeclContext *defn_decl_ctx =
1580  GetCachedClangDeclContextForDIE(dwarf->GetDIE(type_sp->GetID()));
1581  if (defn_decl_ctx)
1582  LinkDeclContextToDIE(defn_decl_ctx, die);
1583  return type_sp;
1584  }
1585  }
1586  assert(tag_decl_kind != -1);
1587  bool clang_type_was_created = false;
1588  clang_type.SetCompilerType(
1589  &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
1590  if (!clang_type) {
1591  clang::DeclContext *decl_ctx =
1592  GetClangDeclContextContainingDIE(die, nullptr);
1593 
1595  attrs.name.GetCString());
1596 
1597  if (attrs.accessibility == eAccessNone && decl_ctx) {
1598  // Check the decl context that contains this class/struct/union. If
1599  // it is a class we must give it an accessibility.
1600  const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
1601  if (DeclKindIsCXXClass(containing_decl_kind))
1602  attrs.accessibility = default_accessibility;
1603  }
1604 
1605  ClangASTMetadata metadata;
1606  metadata.SetUserID(die.GetID());
1607  metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die));
1608 
1609  if (attrs.name.GetStringRef().contains('<')) {
1610  TypeSystemClang::TemplateParameterInfos template_param_infos;
1611  if (ParseTemplateParameterInfos(die, template_param_infos)) {
1612  clang::ClassTemplateDecl *class_template_decl =
1614  decl_ctx, GetOwningClangModule(die), attrs.accessibility,
1615  attrs.name.GetCString(), tag_decl_kind, template_param_infos);
1616  if (!class_template_decl) {
1617  if (log) {
1618  dwarf->GetObjectFile()->GetModule()->LogMessage(
1619  log,
1620  "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" "
1621  "clang::ClassTemplateDecl failed to return a decl.",
1622  static_cast<void *>(this), die.GetOffset(),
1623  DW_TAG_value_to_name(tag), attrs.name.GetCString());
1624  }
1625  return TypeSP();
1626  }
1627 
1628  clang::ClassTemplateSpecializationDecl *class_specialization_decl =
1630  decl_ctx, GetOwningClangModule(die), class_template_decl,
1631  tag_decl_kind, template_param_infos);
1633  class_specialization_decl);
1634  clang_type_was_created = true;
1635 
1636  m_ast.SetMetadata(class_template_decl, metadata);
1637  m_ast.SetMetadata(class_specialization_decl, metadata);
1638  }
1639  }
1640 
1641  if (!clang_type_was_created) {
1642  clang_type_was_created = true;
1643  clang_type = m_ast.CreateRecordType(
1644  decl_ctx, GetOwningClangModule(die), attrs.accessibility,
1645  attrs.name.GetCString(), tag_decl_kind, attrs.class_language,
1646  &metadata, attrs.exports_symbols);
1647  }
1648  }
1649 
1650  // Store a forward declaration to this class type in case any
1651  // parameters in any class methods need it for the clang types for
1652  // function prototypes.
1654  type_sp = std::make_shared<Type>(
1655  die.GetID(), dwarf, attrs.name, attrs.byte_size, nullptr,
1656  LLDB_INVALID_UID, Type::eEncodingIsUID, &attrs.decl, clang_type,
1657  Type::ResolveState::Forward,
1659 
1660  // Add our type to the unique type map so we don't end up creating many
1661  // copies of the same type over and over in the ASTContext for our
1662  // module
1663  unique_ast_entry_up->m_type_sp = type_sp;
1664  unique_ast_entry_up->m_die = die;
1665  unique_ast_entry_up->m_declaration = unique_decl;
1666  unique_ast_entry_up->m_byte_size = attrs.byte_size.getValueOr(0);
1667  dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename,
1668  *unique_ast_entry_up);
1669 
1670  if (!attrs.is_forward_declaration) {
1671  // Always start the definition for a class type so that if the class
1672  // has child classes or types that require the class to be created
1673  // for use as their decl contexts the class will be ready to accept
1674  // these child definitions.
1675  if (!die.HasChildren()) {
1676  // No children for this struct/union/class, lets finish it
1677  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
1678  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
1679  } else {
1680  dwarf->GetObjectFile()->GetModule()->ReportError(
1681  "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
1682  "definition.\nPlease file a bug and attach the file at the "
1683  "start of this error message",
1684  die.GetOffset(), attrs.name.GetCString());
1685  }
1686 
1687  // If the byte size of the record is specified then overwrite the size
1688  // that would be computed by Clang. This is only needed as LLDB's
1689  // TypeSystemClang is always in C++ mode, but some compilers such as
1690  // GCC and Clang give empty structs a size of 0 in C mode (in contrast to
1691  // the size of 1 for empty structs that would be computed in C++ mode).
1692  if (attrs.byte_size) {
1693  clang::RecordDecl *record_decl =
1694  TypeSystemClang::GetAsRecordDecl(clang_type);
1695  if (record_decl) {
1697  layout.bit_size = *attrs.byte_size * 8;
1698  GetClangASTImporter().SetRecordLayout(record_decl, layout);
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.children()) {
1830  if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args))
1831  return false;
1832  }
1833  if (const char *name = die.GetName()) {
1834  template_param_infos.pack_name = name;
1835  }
1836  return true;
1837  }
1838  case DW_TAG_GNU_template_template_param:
1839  is_template_template_argument = true;
1840  LLVM_FALLTHROUGH;
1841  case DW_TAG_template_type_parameter:
1842  case DW_TAG_template_value_parameter: {
1843  DWARFAttributes attributes;
1844  const size_t num_attributes = die.GetAttributes(attributes);
1845  const char *name = nullptr;
1846  const char *template_name = nullptr;
1847  CompilerType clang_type;
1848  uint64_t uval64 = 0;
1849  bool uval64_valid = false;
1850  if (num_attributes > 0) {
1851  DWARFFormValue form_value;
1852  for (size_t i = 0; i < num_attributes; ++i) {
1853  const dw_attr_t attr = attributes.AttributeAtIndex(i);
1854 
1855  switch (attr) {
1856  case DW_AT_name:
1857  if (attributes.ExtractFormValueAtIndex(i, form_value))
1858  name = form_value.AsCString();
1859  break;
1860 
1861  case DW_AT_GNU_template_name:
1862  if (attributes.ExtractFormValueAtIndex(i, form_value))
1863  template_name = form_value.AsCString();
1864  break;
1865 
1866  case DW_AT_type:
1867  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1868  Type *lldb_type = die.ResolveTypeUID(form_value.Reference());
1869  if (lldb_type)
1870  clang_type = lldb_type->GetForwardCompilerType();
1871  }
1872  break;
1873 
1874  case DW_AT_const_value:
1875  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1876  uval64_valid = true;
1877  uval64 = form_value.Unsigned();
1878  }
1879  break;
1880  default:
1881  break;
1882  }
1883  }
1884 
1885  clang::ASTContext &ast = m_ast.getASTContext();
1886  if (!clang_type)
1887  clang_type = m_ast.GetBasicType(eBasicTypeVoid);
1888 
1889  if (!is_template_template_argument) {
1890  bool is_signed = false;
1891  if (name && name[0])
1892  template_param_infos.names.push_back(name);
1893  else
1894  template_param_infos.names.push_back(NULL);
1895 
1896  // Get the signed value for any integer or enumeration if available
1897  clang_type.IsIntegerOrEnumerationType(is_signed);
1898 
1899  if (tag == DW_TAG_template_value_parameter && uval64_valid) {
1900  llvm::Optional<uint64_t> size = clang_type.GetBitSize(nullptr);
1901  if (!size)
1902  return false;
1903  llvm::APInt apint(*size, uval64, is_signed);
1904  template_param_infos.args.push_back(
1905  clang::TemplateArgument(ast, llvm::APSInt(apint, !is_signed),
1906  ClangUtil::GetQualType(clang_type)));
1907  } else {
1908  template_param_infos.args.push_back(
1909  clang::TemplateArgument(ClangUtil::GetQualType(clang_type)));
1910  }
1911  } else {
1912  auto *tplt_type = m_ast.CreateTemplateTemplateParmDecl(template_name);
1913  template_param_infos.names.push_back(name);
1914  template_param_infos.args.push_back(
1915  clang::TemplateArgument(clang::TemplateName(tplt_type)));
1916  }
1917  }
1918  }
1919  return true;
1920 
1921  default:
1922  break;
1923  }
1924  return false;
1925 }
1926 
1928  const DWARFDIE &parent_die,
1929  TypeSystemClang::TemplateParameterInfos &template_param_infos) {
1930 
1931  if (!parent_die)
1932  return false;
1933 
1934  for (DWARFDIE die : parent_die.children()) {
1935  const dw_tag_t tag = die.Tag();
1936 
1937  switch (tag) {
1938  case DW_TAG_template_type_parameter:
1939  case DW_TAG_template_value_parameter:
1940  case DW_TAG_GNU_template_parameter_pack:
1941  case DW_TAG_GNU_template_template_param:
1942  ParseTemplateDIE(die, template_param_infos);
1943  break;
1944 
1945  default:
1946  break;
1947  }
1948  }
1949  return template_param_infos.args.size() == template_param_infos.names.size();
1950 }
1951 
1953  lldb_private::Type *type,
1954  CompilerType &clang_type) {
1955  const dw_tag_t tag = die.Tag();
1956  SymbolFileDWARF *dwarf = die.GetDWARF();
1957 
1958  ClangASTImporter::LayoutInfo layout_info;
1959 
1960  if (die.HasChildren()) {
1961  const bool type_is_objc_object_or_interface =
1962  TypeSystemClang::IsObjCObjectOrInterfaceType(clang_type);
1963  if (type_is_objc_object_or_interface) {
1964  // For objective C we don't start the definition when the class is
1965  // created.
1966  TypeSystemClang::StartTagDeclarationDefinition(clang_type);
1967  }
1968 
1969  int tag_decl_kind = -1;
1970  AccessType default_accessibility = eAccessNone;
1971  if (tag == DW_TAG_structure_type) {
1972  tag_decl_kind = clang::TTK_Struct;
1973  default_accessibility = eAccessPublic;
1974  } else if (tag == DW_TAG_union_type) {
1975  tag_decl_kind = clang::TTK_Union;
1976  default_accessibility = eAccessPublic;
1977  } else if (tag == DW_TAG_class_type) {
1978  tag_decl_kind = clang::TTK_Class;
1979  default_accessibility = eAccessPrivate;
1980  }
1981 
1982  std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> bases;
1983  // Parse members and base classes first
1984  std::vector<DWARFDIE> member_function_dies;
1985 
1986  DelayedPropertyList delayed_properties;
1987  ParseChildMembers(die, clang_type, bases, member_function_dies,
1988  delayed_properties, default_accessibility, layout_info);
1989 
1990  // Now parse any methods if there were any...
1991  for (const DWARFDIE &die : member_function_dies)
1992  dwarf->ResolveType(die);
1993 
1994  if (type_is_objc_object_or_interface) {
1995  ConstString class_name(clang_type.GetTypeName());
1996  if (class_name) {
1997  dwarf->GetObjCMethods(class_name, [&](DWARFDIE method_die) {
1998  method_die.ResolveType();
1999  return true;
2000  });
2001 
2002  for (DelayedPropertyList::iterator pi = delayed_properties.begin(),
2003  pe = delayed_properties.end();
2004  pi != pe; ++pi)
2005  pi->Finalize();
2006  }
2007  }
2008 
2009  if (!bases.empty()) {
2010  // Make sure all base classes refer to complete types and not forward
2011  // declarations. If we don't do this, clang will crash with an
2012  // assertion in the call to clang_type.TransferBaseClasses()
2013  for (const auto &base_class : bases) {
2014  clang::TypeSourceInfo *type_source_info =
2015  base_class->getTypeSourceInfo();
2016  if (type_source_info)
2017  RequireCompleteType(m_ast.GetType(type_source_info->getType()));
2018  }
2019 
2021  std::move(bases));
2022  }
2023  }
2024 
2026  TypeSystemClang::BuildIndirectFields(clang_type);
2027  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
2028 
2029  if (!layout_info.field_offsets.empty() || !layout_info.base_offsets.empty() ||
2030  !layout_info.vbase_offsets.empty()) {
2031  if (type)
2032  layout_info.bit_size = type->GetByteSize(nullptr).getValueOr(0) * 8;
2033  if (layout_info.bit_size == 0)
2034  layout_info.bit_size =
2035  die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8;
2036 
2037  clang::CXXRecordDecl *record_decl =
2039  if (record_decl)
2040  GetClangASTImporter().SetRecordLayout(record_decl, layout_info);
2041  }
2042 
2043  return (bool)clang_type;
2044 }
2045 
2047  lldb_private::Type *type,
2048  CompilerType &clang_type) {
2049  if (TypeSystemClang::StartTagDeclarationDefinition(clang_type)) {
2050  if (die.HasChildren()) {
2051  bool is_signed = false;
2052  clang_type.IsIntegerType(is_signed);
2053  ParseChildEnumerators(clang_type, is_signed,
2054  type->GetByteSize(nullptr).getValueOr(0), die);
2055  }
2056  TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
2057  }
2058  return (bool)clang_type;
2059 }
2060 
2062  lldb_private::Type *type,
2063  CompilerType &clang_type) {
2064  SymbolFileDWARF *dwarf = die.GetDWARF();
2065 
2066  std::lock_guard<std::recursive_mutex> guard(
2067  dwarf->GetObjectFile()->GetModule()->GetMutex());
2068 
2069  // Disable external storage for this type so we don't get anymore
2070  // clang::ExternalASTSource queries for this type.
2071  m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false);
2072 
2073  if (!die)
2074  return false;
2075 
2076  const dw_tag_t tag = die.Tag();
2077 
2078  Log *log =
2079  nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2080  if (log)
2081  dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
2082  log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2083  die.GetID(), die.GetTagAsCString(), type->GetName().AsCString());
2084  assert(clang_type);
2085  DWARFAttributes attributes;
2086  switch (tag) {
2087  case DW_TAG_structure_type:
2088  case DW_TAG_union_type:
2089  case DW_TAG_class_type:
2090  return CompleteRecordType(die, type, clang_type);
2091  case DW_TAG_enumeration_type:
2092  return CompleteEnumType(die, type, clang_type);
2093  default:
2094  assert(false && "not a forward clang type decl!");
2095  break;
2096  }
2097 
2098  return false;
2099 }
2100 
2102  lldb_private::CompilerDeclContext decl_context) {
2103  auto opaque_decl_ctx =
2104  (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
2105  for (auto it = m_decl_ctx_to_die.find(opaque_decl_ctx);
2106  it != m_decl_ctx_to_die.end() && it->first == opaque_decl_ctx;
2107  it = m_decl_ctx_to_die.erase(it))
2108  for (DWARFDIE decl : it->second.children())
2109  GetClangDeclForDIE(decl);
2110 }
2111 
2113  clang::Decl *clang_decl = GetClangDeclForDIE(die);
2114  if (clang_decl != nullptr)
2115  return m_ast.GetCompilerDecl(clang_decl);
2116  return CompilerDecl();
2117 }
2118 
2121  clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die);
2122  if (clang_decl_ctx)
2123  return m_ast.CreateDeclContext(clang_decl_ctx);
2124  return CompilerDeclContext();
2125 }
2126 
2129  clang::DeclContext *clang_decl_ctx =
2130  GetClangDeclContextContainingDIE(die, nullptr);
2131  if (clang_decl_ctx)
2132  return m_ast.CreateDeclContext(clang_decl_ctx);
2133  return CompilerDeclContext();
2134 }
2135 
2137  lldb_private::CompilerType &clang_type, bool is_signed,
2138  uint32_t enumerator_byte_size, const DWARFDIE &parent_die) {
2139  if (!parent_die)
2140  return 0;
2141 
2142  size_t enumerators_added = 0;
2143 
2144  for (DWARFDIE die : parent_die.children()) {
2145  const dw_tag_t tag = die.Tag();
2146  if (tag == DW_TAG_enumerator) {
2147  DWARFAttributes attributes;
2148  const size_t num_child_attributes = die.GetAttributes(attributes);
2149  if (num_child_attributes > 0) {
2150  const char *name = nullptr;
2151  bool got_value = false;
2152  int64_t enum_value = 0;
2153  Declaration decl;
2154 
2155  uint32_t i;
2156  for (i = 0; i < num_child_attributes; ++i) {
2157  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2158  DWARFFormValue form_value;
2159  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2160  switch (attr) {
2161  case DW_AT_const_value:
2162  got_value = true;
2163  if (is_signed)
2164  enum_value = form_value.Signed();
2165  else
2166  enum_value = form_value.Unsigned();
2167  break;
2168 
2169  case DW_AT_name:
2170  name = form_value.AsCString();
2171  break;
2172 
2173  case DW_AT_description:
2174  default:
2175  case DW_AT_decl_file:
2176  decl.SetFile(attributes.CompileUnitAtIndex(i)->GetFile(
2177  form_value.Unsigned()));
2178  break;
2179  case DW_AT_decl_line:
2180  decl.SetLine(form_value.Unsigned());
2181  break;
2182  case DW_AT_decl_column:
2183  decl.SetColumn(form_value.Unsigned());
2184  break;
2185  case DW_AT_sibling:
2186  break;
2187  }
2188  }
2189  }
2190 
2191  if (name && name[0] && got_value) {
2193  clang_type, decl, name, enum_value, enumerator_byte_size * 8);
2194  ++enumerators_added;
2195  }
2196  }
2197  }
2198  }
2199  return enumerators_added;
2200 }
2201 
2203  const DWARFDIE &die) {
2204  DWARFRangeList func_ranges;
2205  const char *name = nullptr;
2206  const char *mangled = nullptr;
2207  int decl_file = 0;
2208  int decl_line = 0;
2209  int decl_column = 0;
2210  int call_file = 0;
2211  int call_line = 0;
2212  int call_column = 0;
2213  DWARFExpression frame_base;
2214 
2215  const dw_tag_t tag = die.Tag();
2216 
2217  if (tag != DW_TAG_subprogram)
2218  return nullptr;
2219 
2220  if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
2221  decl_column, call_file, call_line, call_column,
2222  &frame_base)) {
2223 
2224  // Union of all ranges in the function DIE (if the function is
2225  // discontiguous)
2226  AddressRange func_range;
2227  lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0);
2228  lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0);
2229  if (lowest_func_addr != LLDB_INVALID_ADDRESS &&
2230  lowest_func_addr <= highest_func_addr) {
2231  ModuleSP module_sp(die.GetModule());
2233  lowest_func_addr, module_sp->GetSectionList());
2234  if (func_range.GetBaseAddress().IsValid())
2235  func_range.SetByteSize(highest_func_addr - lowest_func_addr);
2236  }
2237 
2238  if (func_range.GetBaseAddress().IsValid()) {
2239  Mangled func_name;
2240  if (mangled)
2241  func_name.SetValue(ConstString(mangled), true);
2242  else if ((die.GetParent().Tag() == DW_TAG_compile_unit ||
2243  die.GetParent().Tag() == DW_TAG_partial_unit) &&
2244  Language::LanguageIsCPlusPlus(
2246  !Language::LanguageIsObjC(
2248  name && strcmp(name, "main") != 0) {
2249  // If the mangled name is not present in the DWARF, generate the
2250  // demangled name using the decl context. We skip if the function is
2251  // "main" as its name is never mangled.
2252  bool is_static = false;
2253  bool is_variadic = false;
2254  bool has_template_params = false;
2255  unsigned type_quals = 0;
2256  std::vector<CompilerType> param_types;
2257  std::vector<clang::ParmVarDecl *> param_decls;
2258  StreamString sstr;
2259 
2261  sstr << decl_ctx.GetQualifiedName();
2262 
2263  clang::DeclContext *containing_decl_ctx =
2264  GetClangDeclContextContainingDIE(die, nullptr);
2265  ParseChildParameters(containing_decl_ctx, die, true, is_static,
2266  is_variadic, has_template_params, param_types,
2267  param_decls, type_quals);
2268  sstr << "(";
2269  for (size_t i = 0; i < param_types.size(); i++) {
2270  if (i > 0)
2271  sstr << ", ";
2272  sstr << param_types[i].GetTypeName();
2273  }
2274  if (is_variadic)
2275  sstr << ", ...";
2276  sstr << ")";
2277  if (type_quals & clang::Qualifiers::Const)
2278  sstr << " const";
2279 
2280  func_name.SetValue(ConstString(sstr.GetString()), false);
2281  } else
2282  func_name.SetValue(ConstString(name), false);
2283 
2284  FunctionSP func_sp;
2285  std::unique_ptr<Declaration> decl_up;
2286  if (decl_file != 0 || decl_line != 0 || decl_column != 0)
2287  decl_up = std::make_unique<Declaration>(die.GetCU()->GetFile(decl_file),
2288  decl_line, decl_column);
2289 
2290  SymbolFileDWARF *dwarf = die.GetDWARF();
2291  // Supply the type _only_ if it has already been parsed
2292  Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE());
2293 
2294  assert(func_type == nullptr || func_type != DIE_IS_BEING_PARSED);
2295 
2296  if (dwarf->FixupAddress(func_range.GetBaseAddress())) {
2297  const user_id_t func_user_id = die.GetID();
2298  func_sp =
2299  std::make_shared<Function>(&comp_unit,
2300  func_user_id, // UserID is the DIE offset
2301  func_user_id, func_name, func_type,
2302  func_range); // first address range
2303 
2304  if (func_sp.get() != nullptr) {
2305  if (frame_base.IsValid())
2306  func_sp->GetFrameBaseExpression() = frame_base;
2307  comp_unit.AddFunction(func_sp);
2308  return func_sp.get();
2309  }
2310  }
2311  }
2312  }
2313  return nullptr;
2314 }
2315 
2317  const DWARFDIE &die, const DWARFDIE &parent_die,
2318  const lldb_private::CompilerType &class_clang_type,
2319  lldb::AccessType default_accessibility,
2320  DelayedPropertyList &delayed_properties,
2322  FieldInfo &last_field_info) {
2323  ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2324  const dw_tag_t tag = die.Tag();
2325  // Get the parent byte size so we can verify any members will fit
2326  const uint64_t parent_byte_size =
2327  parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX);
2328  const uint64_t parent_bit_size =
2329  parent_byte_size == UINT64_MAX ? UINT64_MAX : parent_byte_size * 8;
2330 
2331  DWARFAttributes attributes;
2332  const size_t num_attributes = die.GetAttributes(attributes);
2333  if (num_attributes == 0)
2334  return;
2335 
2336  const char *name = nullptr;
2337  const char *prop_name = nullptr;
2338  const char *prop_getter_name = nullptr;
2339  const char *prop_setter_name = nullptr;
2340  uint32_t prop_attributes = 0;
2341 
2342  bool is_artificial = false;
2343  DWARFFormValue encoding_form;
2344  AccessType accessibility = eAccessNone;
2345  uint32_t member_byte_offset =
2346  (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX;
2347  llvm::Optional<uint64_t> byte_size;
2348  int64_t bit_offset = 0;
2349  uint64_t data_bit_offset = UINT64_MAX;
2350  size_t bit_size = 0;
2351  bool is_external =
2352  false; // On DW_TAG_members, this means the member is static
2353  uint32_t i;
2354  for (i = 0; i < num_attributes && !is_artificial; ++i) {
2355  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2356  DWARFFormValue form_value;
2357  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2358  // DW_AT_data_member_location indicates the byte offset of the
2359  // word from the base address of the structure.
2360  //
2361  // DW_AT_bit_offset indicates how many bits into the word
2362  // (according to the host endianness) the low-order bit of the
2363  // field starts. AT_bit_offset can be negative.
2364  //
2365  // DW_AT_bit_size indicates the size of the field in bits.
2366  switch (attr) {
2367  case DW_AT_name:
2368  name = form_value.AsCString();
2369  break;
2370  case DW_AT_type:
2371  encoding_form = form_value;
2372  break;
2373  case DW_AT_bit_offset:
2374  bit_offset = form_value.Signed();
2375  break;
2376  case DW_AT_bit_size:
2377  bit_size = form_value.Unsigned();
2378  break;
2379  case DW_AT_byte_size:
2380  byte_size = form_value.Unsigned();
2381  break;
2382  case DW_AT_data_bit_offset:
2383  data_bit_offset = form_value.Unsigned();
2384  break;
2385  case DW_AT_data_member_location:
2386  if (form_value.BlockData()) {
2387  Value initialValue(0);
2388  Value memberOffset(0);
2389  const DWARFDataExtractor &debug_info_data = die.GetData();
2390  uint32_t block_length = form_value.Unsigned();
2391  uint32_t block_offset =
2392  form_value.BlockData() - debug_info_data.GetDataStart();
2393  if (DWARFExpression::Evaluate(
2394  nullptr, // ExecutionContext *
2395  nullptr, // RegisterContext *
2396  module_sp,
2397  DataExtractor(debug_info_data, block_offset, block_length),
2398  die.GetCU(), eRegisterKindDWARF, &initialValue, nullptr,
2399  memberOffset, nullptr)) {
2400  member_byte_offset = memberOffset.ResolveValue(nullptr).UInt();
2401  }
2402  } else {
2403  // With DWARF 3 and later, if the value is an integer constant,
2404  // this form value is the offset in bytes from the beginning of
2405  // the containing entity.
2406  member_byte_offset = form_value.Unsigned();
2407  }
2408  break;
2409 
2410  case DW_AT_accessibility:
2411  accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2412  break;
2413  case DW_AT_artificial:
2414  is_artificial = form_value.Boolean();
2415  break;
2416  case DW_AT_APPLE_property_name:
2417  prop_name = form_value.AsCString();
2418  break;
2419  case DW_AT_APPLE_property_getter:
2420  prop_getter_name = form_value.AsCString();
2421  break;
2422  case DW_AT_APPLE_property_setter:
2423  prop_setter_name = form_value.AsCString();
2424  break;
2425  case DW_AT_APPLE_property_attribute:
2426  prop_attributes = form_value.Unsigned();
2427  break;
2428  case DW_AT_external:
2429  is_external = form_value.Boolean();
2430  break;
2431 
2432  default:
2433  case DW_AT_declaration:
2434  case DW_AT_description:
2435  case DW_AT_mutable:
2436  case DW_AT_visibility:
2437  case DW_AT_sibling:
2438  break;
2439  }
2440  }
2441  }
2442 
2443  if (prop_name) {
2444  ConstString fixed_setter;
2445 
2446  // Check if the property getter/setter were provided as full names.
2447  // We want basenames, so we extract them.
2448 
2449  if (prop_getter_name && prop_getter_name[0] == '-') {
2450  ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true);
2451  prop_getter_name = prop_getter_method.GetSelector().GetCString();
2452  }
2453 
2454  if (prop_setter_name && prop_setter_name[0] == '-') {
2455  ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true);
2456  prop_setter_name = prop_setter_method.GetSelector().GetCString();
2457  }
2458 
2459  // If the names haven't been provided, they need to be filled in.
2460 
2461  if (!prop_getter_name) {
2462  prop_getter_name = prop_name;
2463  }
2464  if (!prop_setter_name && prop_name[0] &&
2465  !(prop_attributes & DW_APPLE_PROPERTY_readonly)) {
2466  StreamString ss;
2467 
2468  ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]);
2469 
2470  fixed_setter.SetString(ss.GetString());
2471  prop_setter_name = fixed_setter.GetCString();
2472  }
2473  }
2474 
2475  // Clang has a DWARF generation bug where sometimes it represents
2476  // fields that are references with bad byte size and bit size/offset
2477  // information such as:
2478  //
2479  // DW_AT_byte_size( 0x00 )
2480  // DW_AT_bit_size( 0x40 )
2481  // DW_AT_bit_offset( 0xffffffffffffffc0 )
2482  //
2483  // So check the bit offset to make sure it is sane, and if the values
2484  // are not sane, remove them. If we don't do this then we will end up
2485  // with a crash if we try to use this type in an expression when clang
2486  // becomes unhappy with its recycled debug info.
2487 
2488  if (byte_size.getValueOr(0) == 0 && bit_offset < 0) {
2489  bit_size = 0;
2490  bit_offset = 0;
2491  }
2492 
2493  const bool class_is_objc_object_or_interface =
2494  TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type);
2495 
2496  // FIXME: Make Clang ignore Objective-C accessibility for expressions
2497  if (class_is_objc_object_or_interface)
2498  accessibility = eAccessNone;
2499 
2500  // Handle static members
2501  if (is_external && member_byte_offset == UINT32_MAX) {
2502  Type *var_type = die.ResolveTypeUID(encoding_form.Reference());
2503 
2504  if (var_type) {
2505  if (accessibility == eAccessNone)
2506  accessibility = eAccessPublic;
2507  TypeSystemClang::AddVariableToRecordType(
2508  class_clang_type, name, var_type->GetForwardCompilerType(),
2509  accessibility);
2510  }
2511  return;
2512  }
2513 
2514  if (!is_artificial) {
2515  Type *member_type = die.ResolveTypeUID(encoding_form.Reference());
2516 
2517  clang::FieldDecl *field_decl = nullptr;
2518  const uint64_t character_width = 8;
2519  const uint64_t word_width = 32;
2520  if (tag == DW_TAG_member) {
2521  if (member_type) {
2522  CompilerType member_clang_type = member_type->GetLayoutCompilerType();
2523 
2524  if (accessibility == eAccessNone)
2525  accessibility = default_accessibility;
2526 
2527  uint64_t field_bit_offset =
2528  (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
2529 
2530  if (bit_size > 0) {
2531  FieldInfo this_field_info;
2532  this_field_info.bit_offset = field_bit_offset;
2533  this_field_info.bit_size = bit_size;
2534 
2535  if (data_bit_offset != UINT64_MAX) {
2536  this_field_info.bit_offset = data_bit_offset;
2537  } else {
2538  if (!byte_size)
2539  byte_size = member_type->GetByteSize(nullptr);
2540 
2541  ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2542  if (objfile->GetByteOrder() == eByteOrderLittle) {
2543  this_field_info.bit_offset += byte_size.getValueOr(0) * 8;
2544  this_field_info.bit_offset -= (bit_offset + bit_size);
2545  } else {
2546  this_field_info.bit_offset += bit_offset;
2547  }
2548  }
2549 
2550  // The ObjC runtime knows the byte offset but we still need to provide
2551  // the bit-offset in the layout. It just means something different then
2552  // what it does in C and C++. So we skip this check for ObjC types.
2553  //
2554  // We also skip this for fields of a union since they will all have a
2555  // zero offset.
2556  if (!TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type) &&
2557  !(parent_die.Tag() == DW_TAG_union_type && this_field_info.bit_offset == 0) &&
2558  ((this_field_info.bit_offset >= parent_bit_size) ||
2559  (last_field_info.IsBitfield() &&
2560  !last_field_info.NextBitfieldOffsetIsValid(
2561  this_field_info.bit_offset)))) {
2562  ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2563  objfile->GetModule()->ReportWarning(
2564  "0x%8.8" PRIx64 ": %s bitfield named \"%s\" has invalid "
2565  "bit offset (0x%8.8" PRIx64
2566  ") member will be ignored. Please file a bug against the "
2567  "compiler and include the preprocessed output for %s\n",
2568  die.GetID(), DW_TAG_value_to_name(tag), name,
2569  this_field_info.bit_offset, GetUnitName(parent_die).c_str());
2570  return;
2571  }
2572 
2573  // Update the field bit offset we will report for layout
2574  field_bit_offset = this_field_info.bit_offset;
2575 
2576  // Objective-C has invalid DW_AT_bit_offset values in older
2577  // versions of clang, so we have to be careful and only insert
2578  // unnamed bitfields if we have a new enough clang.
2579  bool detect_unnamed_bitfields = true;
2580 
2581  if (class_is_objc_object_or_interface)
2582  detect_unnamed_bitfields =
2584 
2585  if (detect_unnamed_bitfields) {
2586  clang::Optional<FieldInfo> unnamed_field_info;
2587  uint64_t last_field_end = 0;
2588 
2589  last_field_end =
2590  last_field_info.bit_offset + last_field_info.bit_size;
2591 
2592  if (!last_field_info.IsBitfield()) {
2593  // The last field was not a bit-field...
2594  // but if it did take up the entire word then we need to extend
2595  // last_field_end so the bit-field does not step into the last
2596  // fields padding.
2597  if (last_field_end != 0 && ((last_field_end % word_width) != 0))
2598  last_field_end += word_width - (last_field_end % word_width);
2599  }
2600 
2601  // If we have a gap between the last_field_end and the current
2602  // field we have an unnamed bit-field.
2603  // If we have a base class, we assume there is no unnamed
2604  // bit-field if this is the first field since the gap can be
2605  // attributed to the members from the base class. This assumption
2606  // is not correct if the first field of the derived class is
2607  // indeed an unnamed bit-field. We currently do not have the
2608  // machinary to track the offset of the last field of classes we
2609  // have seen before, so we are not handling this case.
2610  if (this_field_info.bit_offset != last_field_end &&
2611  this_field_info.bit_offset > last_field_end &&
2612  !(last_field_info.bit_offset == 0 &&
2613  last_field_info.bit_size == 0 &&
2614  layout_info.base_offsets.size() != 0)) {
2615  unnamed_field_info = FieldInfo{};
2616  unnamed_field_info->bit_size =
2617  this_field_info.bit_offset - last_field_end;
2618  unnamed_field_info->bit_offset = last_field_end;
2619  }
2620 
2621  if (unnamed_field_info) {
2622  clang::FieldDecl *unnamed_bitfield_decl =
2623  TypeSystemClang::AddFieldToRecordType(
2624  class_clang_type, llvm::StringRef(),
2626  word_width),
2627  accessibility, unnamed_field_info->bit_size);
2628 
2629  layout_info.field_offsets.insert(std::make_pair(
2630  unnamed_bitfield_decl, unnamed_field_info->bit_offset));
2631  }
2632  }
2633 
2634  last_field_info = this_field_info;
2635  last_field_info.SetIsBitfield(true);
2636  } else {
2637  last_field_info.bit_offset = field_bit_offset;
2638 
2639  if (llvm::Optional<uint64_t> clang_type_size =
2640  member_type->GetByteSize(nullptr)) {
2641  last_field_info.bit_size = *clang_type_size * character_width;
2642  }
2643 
2644  last_field_info.SetIsBitfield(false);
2645  }
2646 
2647  if (!member_clang_type.IsCompleteType())
2648  member_clang_type.GetCompleteType();
2649 
2650  {
2651  // Older versions of clang emit array[0] and array[1] in the
2652  // same way (<rdar://problem/12566646>). If the current field
2653  // is at the end of the structure, then there is definitely no
2654  // room for extra elements and we override the type to
2655  // array[0].
2656 
2657  CompilerType member_array_element_type;
2658  uint64_t member_array_size;
2659  bool member_array_is_incomplete;
2660 
2661  if (member_clang_type.IsArrayType(&member_array_element_type,
2662  &member_array_size,
2663  &member_array_is_incomplete) &&
2664  !member_array_is_incomplete) {
2665  uint64_t parent_byte_size =
2666  parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size,
2667  UINT64_MAX);
2668 
2669  if (member_byte_offset >= parent_byte_size) {
2670  if (member_array_size != 1 &&
2671  (member_array_size != 0 ||
2672  member_byte_offset > parent_byte_size)) {
2673  module_sp->ReportError(
2674  "0x%8.8" PRIx64
2675  ": DW_TAG_member '%s' refers to type 0x%8.8x"
2676  " which extends beyond the bounds of 0x%8.8" PRIx64,
2677  die.GetID(), name, encoding_form.Reference().GetOffset(),
2678  parent_die.GetID());
2679  }
2680 
2681  member_clang_type =
2682  m_ast.CreateArrayType(member_array_element_type, 0, false);
2683  }
2684  }
2685  }
2686 
2687  RequireCompleteType(member_clang_type);
2688 
2689  field_decl = TypeSystemClang::AddFieldToRecordType(
2690  class_clang_type, name, member_clang_type, accessibility,
2691  bit_size);
2692 
2693  m_ast.SetMetadataAsUserID(field_decl, die.GetID());
2694 
2695  layout_info.field_offsets.insert(
2696  std::make_pair(field_decl, field_bit_offset));
2697  } else {
2698  if (name)
2699  module_sp->ReportError(
2700  "0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8x"
2701  " which was unable to be parsed",
2702  die.GetID(), name, encoding_form.Reference().GetOffset());
2703  else
2704  module_sp->ReportError(
2705  "0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8x"
2706  " which was unable to be parsed",
2707  die.GetID(), encoding_form.Reference().GetOffset());
2708  }
2709  }
2710 
2711  if (prop_name != nullptr && member_type) {
2712  clang::ObjCIvarDecl *ivar_decl = nullptr;
2713 
2714  if (field_decl) {
2715  ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2716  assert(ivar_decl != nullptr);
2717  }
2718 
2719  ClangASTMetadata metadata;
2720  metadata.SetUserID(die.GetID());
2721  delayed_properties.push_back(DelayedAddObjCClassProperty(
2722  class_clang_type, prop_name, member_type->GetLayoutCompilerType(),
2723  ivar_decl, prop_setter_name, prop_getter_name, prop_attributes,
2724  &metadata));
2725 
2726  if (ivar_decl)
2727  m_ast.SetMetadataAsUserID(ivar_decl, die.GetID());
2728  }
2729  }
2730 }
2731 
2733  const DWARFDIE &parent_die, CompilerType &class_clang_type,
2734  std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> &base_classes,
2735  std::vector<DWARFDIE> &member_function_dies,
2736  DelayedPropertyList &delayed_properties, AccessType &default_accessibility,
2737  ClangASTImporter::LayoutInfo &layout_info) {
2738  if (!parent_die)
2739  return false;
2740 
2741  FieldInfo last_field_info;
2742 
2743  ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2744  TypeSystemClang *ast =
2745  llvm::dyn_cast_or_null<TypeSystemClang>(class_clang_type.GetTypeSystem());
2746  if (ast == nullptr)
2747  return false;
2748 
2749  for (DWARFDIE die : parent_die.children()) {
2750  dw_tag_t tag = die.Tag();
2751 
2752  switch (tag) {
2753  case DW_TAG_member:
2754  case DW_TAG_APPLE_property:
2755  ParseSingleMember(die, parent_die, class_clang_type,
2756  default_accessibility, delayed_properties, layout_info,
2757  last_field_info);
2758  break;
2759 
2760  case DW_TAG_subprogram:
2761  // Let the type parsing code handle this one for us.
2762  member_function_dies.push_back(die);
2763  break;
2764 
2765  case DW_TAG_inheritance: {
2766  // TODO: implement DW_TAG_inheritance type parsing
2767  DWARFAttributes attributes;
2768  const size_t num_attributes = die.GetAttributes(attributes);
2769  if (num_attributes > 0) {
2770  DWARFFormValue encoding_form;
2771  AccessType accessibility = default_accessibility;
2772  bool is_virtual = false;
2773  bool is_base_of_class = true;
2774  off_t member_byte_offset = 0;
2775  uint32_t i;
2776  for (i = 0; i < num_attributes; ++i) {
2777  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2778  DWARFFormValue form_value;
2779  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2780  switch (attr) {
2781  case DW_AT_type:
2782  encoding_form = form_value;
2783  break;
2784  case DW_AT_data_member_location:
2785  if (form_value.BlockData()) {
2786  Value initialValue(0);
2787  Value memberOffset(0);
2788  const DWARFDataExtractor &debug_info_data = die.GetData();
2789  uint32_t block_length = form_value.Unsigned();
2790  uint32_t block_offset =
2791  form_value.BlockData() - debug_info_data.GetDataStart();
2792  if (DWARFExpression::Evaluate(
2793  nullptr, nullptr, module_sp,
2794  DataExtractor(debug_info_data, block_offset,
2795  block_length),
2796  die.GetCU(), eRegisterKindDWARF, &initialValue, nullptr,
2797  memberOffset, nullptr)) {
2798  member_byte_offset =
2799  memberOffset.ResolveValue(nullptr).UInt();
2800  }
2801  } else {
2802  // With DWARF 3 and later, if the value is an integer constant,
2803  // this form value is the offset in bytes from the beginning of
2804  // the containing entity.
2805  member_byte_offset = form_value.Unsigned();
2806  }
2807  break;
2808 
2809  case DW_AT_accessibility:
2810  accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2811  break;
2812 
2813  case DW_AT_virtuality:
2814  is_virtual = form_value.Boolean();
2815  break;
2816 
2817  case DW_AT_sibling:
2818  break;
2819 
2820  default:
2821  break;
2822  }
2823  }
2824  }
2825 
2826  Type *base_class_type = die.ResolveTypeUID(encoding_form.Reference());
2827  if (base_class_type == nullptr) {
2828  module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to "
2829  "resolve the base class at 0x%8.8x"
2830  " from enclosing type 0x%8.8x. \nPlease file "
2831  "a bug and attach the file at the start of "
2832  "this error message",
2833  die.GetOffset(),
2834  encoding_form.Reference().GetOffset(),
2835  parent_die.GetOffset());
2836  break;
2837  }
2838 
2839  CompilerType base_class_clang_type =
2840  base_class_type->GetFullCompilerType();
2841  assert(base_class_clang_type);
2842  if (TypeSystemClang::IsObjCObjectOrInterfaceType(class_clang_type)) {
2843  ast->SetObjCSuperClass(class_clang_type, base_class_clang_type);
2844  } else {
2845  std::unique_ptr<clang::CXXBaseSpecifier> result =
2847  base_class_clang_type.GetOpaqueQualType(), accessibility,
2848  is_virtual, is_base_of_class);
2849  if (!result)
2850  break;
2851 
2852  base_classes.push_back(std::move(result));
2853 
2854  if (is_virtual) {
2855  // Do not specify any offset for virtual inheritance. The DWARF
2856  // produced by clang doesn't give us a constant offset, but gives
2857  // us a DWARF expressions that requires an actual object in memory.
2858  // the DW_AT_data_member_location for a virtual base class looks
2859  // like:
2860  // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref,
2861  // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref,
2862  // DW_OP_plus )
2863  // Given this, there is really no valid response we can give to
2864  // clang for virtual base class offsets, and this should eventually
2865  // be removed from LayoutRecordType() in the external
2866  // AST source in clang.
2867  } else {
2868  layout_info.base_offsets.insert(std::make_pair(
2869  ast->GetAsCXXRecordDecl(
2870  base_class_clang_type.GetOpaqueQualType()),
2871  clang::CharUnits::fromQuantity(member_byte_offset)));
2872  }
2873  }
2874  }
2875  } break;
2876 
2877  default:
2878  break;
2879  }
2880  }
2881 
2882  return true;
2883 }
2884 
2886  clang::DeclContext *containing_decl_ctx, const DWARFDIE &parent_die,
2887  bool skip_artificial, bool &is_static, bool &is_variadic,
2888  bool &has_template_params, std::vector<CompilerType> &function_param_types,
2889  std::vector<clang::ParmVarDecl *> &function_param_decls,
2890  unsigned &type_quals) {
2891  if (!parent_die)
2892  return 0;
2893 
2894  size_t arg_idx = 0;
2895  for (DWARFDIE die : parent_die.children()) {
2896  const dw_tag_t tag = die.Tag();
2897  switch (tag) {
2898  case DW_TAG_formal_parameter: {
2899  DWARFAttributes attributes;
2900  const size_t num_attributes = die.GetAttributes(attributes);
2901  if (num_attributes > 0) {
2902  const char *name = nullptr;
2903  DWARFFormValue param_type_die_form;
2904  bool is_artificial = false;
2905  // one of None, Auto, Register, Extern, Static, PrivateExtern
2906 
2907  clang::StorageClass storage = clang::SC_None;
2908  uint32_t i;
2909  for (i = 0; i < num_attributes; ++i) {
2910  const dw_attr_t attr = attributes.AttributeAtIndex(i);
2911  DWARFFormValue form_value;
2912  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2913  switch (attr) {
2914  case DW_AT_name:
2915  name = form_value.AsCString();
2916  break;
2917  case DW_AT_type:
2918  param_type_die_form = form_value;
2919  break;
2920  case DW_AT_artificial:
2921  is_artificial = form_value.Boolean();
2922  break;
2923  case DW_AT_location:
2924  case DW_AT_const_value:
2925  case DW_AT_default_value:
2926  case DW_AT_description:
2927  case DW_AT_endianity:
2928  case DW_AT_is_optional:
2929  case DW_AT_segment:
2930  case DW_AT_variable_parameter:
2931  default:
2932  case DW_AT_abstract_origin:
2933  case DW_AT_sibling:
2934  break;
2935  }
2936  }
2937  }
2938 
2939  bool skip = false;
2940  if (skip_artificial && is_artificial) {
2941  // In order to determine if a C++ member function is "const" we
2942  // have to look at the const-ness of "this"...
2943  if (arg_idx == 0 &&
2944  DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()) &&
2945  // Often times compilers omit the "this" name for the
2946  // specification DIEs, so we can't rely upon the name being in
2947  // the formal parameter DIE...
2948  (name == nullptr || ::strcmp(name, "this") == 0)) {
2949  Type *this_type =
2950  die.ResolveTypeUID(param_type_die_form.Reference());
2951  if (this_type) {
2952  uint32_t encoding_mask = this_type->GetEncodingMask();
2953  if (encoding_mask & Type::eEncodingIsPointerUID) {
2954  is_static = false;
2955 
2956  if (encoding_mask & (1u << Type::eEncodingIsConstUID))
2957  type_quals |= clang::Qualifiers::Const;
2958  if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
2959  type_quals |= clang::Qualifiers::Volatile;
2960  }
2961  }
2962  }
2963  skip = true;
2964  }
2965 
2966  if (!skip) {
2967  Type *type = die.ResolveTypeUID(param_type_die_form.Reference());
2968  if (type) {
2969  function_param_types.push_back(type->GetForwardCompilerType());
2970 
2971  clang::ParmVarDecl *param_var_decl =
2973  containing_decl_ctx, GetOwningClangModule(die), name,
2974  type->GetForwardCompilerType(), storage);
2975  assert(param_var_decl);
2976  function_param_decls.push_back(param_var_decl);
2977 
2978  m_ast.SetMetadataAsUserID(param_var_decl, die.GetID());
2979  }
2980  }
2981  }
2982  arg_idx++;
2983  } break;
2984 
2985  case DW_TAG_unspecified_parameters:
2986  is_variadic = true;
2987  break;
2988 
2989  case DW_TAG_template_type_parameter:
2990  case DW_TAG_template_value_parameter:
2991  case DW_TAG_GNU_template_parameter_pack:
2992  // The one caller of this was never using the template_param_infos, and
2993  // the local variable was taking up a large amount of stack space in
2994  // SymbolFileDWARF::ParseType() so this was removed. If we ever need the
2995  // template params back, we can add them back.
2996  // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
2997  has_template_params = true;
2998  break;
2999 
3000  default:
3001  break;
3002  }
3003  }
3004  return arg_idx;
3005 }
3006 
3007 llvm::Optional<SymbolFile::ArrayInfo>
3009  const ExecutionContext *exe_ctx) {
3010  SymbolFile::ArrayInfo array_info;
3011  if (!parent_die)
3012  return llvm::None;
3013 
3014  for (DWARFDIE die : parent_die.children()) {
3015  const dw_tag_t tag = die.Tag();
3016  if (tag != DW_TAG_subrange_type)
3017  continue;
3018 
3019  DWARFAttributes attributes;
3020  const size_t num_child_attributes = die.GetAttributes(attributes);
3021  if (num_child_attributes > 0) {
3022  uint64_t num_elements = 0;
3023  uint64_t lower_bound = 0;
3024  uint64_t upper_bound = 0;
3025  bool upper_bound_valid = false;
3026  uint32_t i;
3027  for (i = 0; i < num_child_attributes; ++i) {
3028  const dw_attr_t attr = attributes.AttributeAtIndex(i);
3029  DWARFFormValue form_value;
3030  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3031  switch (attr) {
3032  case DW_AT_name:
3033  break;
3034 
3035  case DW_AT_count:
3036  if (DWARFDIE var_die = die.GetReferencedDIE(DW_AT_count)) {
3037  if (var_die.Tag() == DW_TAG_variable)
3038  if (exe_ctx) {
3039  if (auto frame = exe_ctx->GetFrameSP()) {
3040  Status error;
3041  lldb::VariableSP var_sp;
3042  auto valobj_sp = frame->GetValueForVariableExpressionPath(
3043  var_die.GetName(), eNoDynamicValues, 0, var_sp,
3044  error);
3045  if (valobj_sp) {
3046  num_elements = valobj_sp->GetValueAsUnsigned(0);
3047  break;
3048  }
3049  }
3050  }
3051  } else
3052  num_elements = form_value.Unsigned();
3053  break;
3054 
3055  case DW_AT_bit_stride:
3056  array_info.bit_stride = form_value.Unsigned();
3057  break;
3058 
3059  case DW_AT_byte_stride:
3060  array_info.byte_stride = form_value.Unsigned();
3061  break;
3062 
3063  case DW_AT_lower_bound:
3064  lower_bound = form_value.Unsigned();
3065  break;
3066 
3067  case DW_AT_upper_bound:
3068  upper_bound_valid = true;
3069  upper_bound = form_value.Unsigned();
3070  break;
3071 
3072  default:
3073  case DW_AT_abstract_origin:
3074  case DW_AT_accessibility:
3075  case DW_AT_allocated:
3076  case DW_AT_associated:
3077  case DW_AT_data_location:
3078  case DW_AT_declaration:
3079  case DW_AT_description:
3080  case DW_AT_sibling:
3081  case DW_AT_threads_scaled:
3082  case DW_AT_type:
3083  case DW_AT_visibility:
3084  break;
3085  }
3086  }
3087  }
3088 
3089  if (num_elements == 0) {
3090  if (upper_bound_valid && upper_bound >= lower_bound)
3091  num_elements = upper_bound - lower_bound + 1;
3092  }
3093 
3094  array_info.element_orders.push_back(num_elements);
3095  }
3096  }
3097  return array_info;
3098 }
3099 
3101  if (die) {
3102  SymbolFileDWARF *dwarf = die.GetDWARF();
3103  DWARFAttributes attributes;
3104  const size_t num_attributes = die.GetAttributes(attributes);
3105  if (num_attributes > 0) {
3106  DWARFFormValue type_die_form;
3107  for (size_t i = 0; i < num_attributes; ++i) {
3108  dw_attr_t attr = attributes.AttributeAtIndex(i);
3109  DWARFFormValue form_value;
3110 
3111  if (attr == DW_AT_type &&
3112  attributes.ExtractFormValueAtIndex(i, form_value))
3113  return dwarf->ResolveTypeUID(form_value.Reference(), true);
3114  }
3115  }
3116  }
3117 
3118  return nullptr;
3119 }
3120 
3122  if (!die)
3123  return nullptr;
3124 
3125  switch (die.Tag()) {
3126  case DW_TAG_variable:
3127  case DW_TAG_constant:
3128  case DW_TAG_formal_parameter:
3129  case DW_TAG_imported_declaration:
3130  case DW_TAG_imported_module:
3131  break;
3132  default:
3133  return nullptr;
3134  }
3135 
3136  DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE());
3137  if (cache_pos != m_die_to_decl.end())
3138  return cache_pos->second;
3139 
3140  if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) {
3141  clang::Decl *decl = GetClangDeclForDIE(spec_die);
3142  m_die_to_decl[die.GetDIE()] = decl;
3143  m_decl_to_die[decl].insert(die.GetDIE());
3144  return decl;
3145  }
3146 
3147  if (DWARFDIE abstract_origin_die =
3148  die.GetReferencedDIE(DW_AT_abstract_origin)) {
3149  clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die);
3150  m_die_to_decl[die.GetDIE()] = decl;
3151  m_decl_to_die[decl].insert(die.GetDIE());
3152  return decl;
3153  }
3154 
3155  clang::Decl *decl = nullptr;
3156  switch (die.Tag()) {
3157  case DW_TAG_variable:
3158  case DW_TAG_constant:
3159  case DW_TAG_formal_parameter: {
3160  SymbolFileDWARF *dwarf = die.GetDWARF();
3161  Type *type = GetTypeForDIE(die);
3162  if (dwarf && type) {
3163  const char *name = die.GetName();
3164  clang::DeclContext *decl_context =
3165  TypeSystemClang::DeclContextGetAsDeclContext(
3166  dwarf->GetDeclContextContainingUID(die.GetID()));
3168  decl_context, GetOwningClangModule(die), name,
3169  ClangUtil::GetQualType(type->GetForwardCompilerType()));
3170  }
3171  break;
3172  }
3173  case DW_TAG_imported_declaration: {
3174  SymbolFileDWARF *dwarf = die.GetDWARF();
3175  DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3176  if (imported_uid) {
3177  CompilerDecl imported_decl = SymbolFileDWARF::GetDecl(imported_uid);
3178  if (imported_decl) {
3179  clang::DeclContext *decl_context =
3180  TypeSystemClang::DeclContextGetAsDeclContext(
3181  dwarf->GetDeclContextContainingUID(die.GetID()));
3182  if (clang::NamedDecl *clang_imported_decl =
3183  llvm::dyn_cast<clang::NamedDecl>(
3184  (clang::Decl *)imported_decl.GetOpaqueDecl()))
3186  decl_context, OptionalClangModuleID(), clang_imported_decl);
3187  }
3188  }
3189  break;
3190  }
3191  case DW_TAG_imported_module: {
3192  SymbolFileDWARF *dwarf = die.GetDWARF();
3193  DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3194 
3195  if (imported_uid) {
3196  CompilerDeclContext imported_decl_ctx =
3197  SymbolFileDWARF::GetDeclContext(imported_uid);
3198  if (imported_decl_ctx) {
3199  clang::DeclContext *decl_context =
3200  TypeSystemClang::DeclContextGetAsDeclContext(
3201  dwarf->GetDeclContextContainingUID(die.GetID()));
3202  if (clang::NamespaceDecl *ns_decl =
3203  TypeSystemClang::DeclContextGetAsNamespaceDecl(
3204  imported_decl_ctx))
3206  decl_context, OptionalClangModuleID(), ns_decl);
3207  }
3208  }
3209  break;
3210  }
3211  default:
3212  break;
3213  }
3214 
3215  m_die_to_decl[die.GetDIE()] = decl;
3216  m_decl_to_die[decl].insert(die.GetDIE());
3217 
3218  return decl;
3219 }
3220 
3221 clang::DeclContext *
3223  if (die) {
3224  clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die);
3225  if (decl_ctx)
3226  return decl_ctx;
3227 
3228  bool try_parsing_type = true;
3229  switch (die.Tag()) {
3230  case DW_TAG_compile_unit:
3231  case DW_TAG_partial_unit:
3232  decl_ctx = m_ast.GetTranslationUnitDecl();
3233  try_parsing_type = false;
3234  break;
3235 
3236  case DW_TAG_namespace:
3237  decl_ctx = ResolveNamespaceDIE(die);
3238  try_parsing_type = false;
3239  break;
3240 
3241  case DW_TAG_lexical_block:
3242  decl_ctx = GetDeclContextForBlock(die);
3243  try_parsing_type = false;
3244  break;
3245 
3246  default:
3247  break;
3248  }
3249 
3250  if (decl_ctx == nullptr && try_parsing_type) {
3251  Type *type = die.GetDWARF()->ResolveType(die);
3252  if (type)
3253  decl_ctx = GetCachedClangDeclContextForDIE(die);
3254  }
3255 
3256  if (decl_ctx) {
3257  LinkDeclContextToDIE(decl_ctx, die);
3258  return decl_ctx;
3259  }
3260  }
3261  return nullptr;
3262 }
3263 
3266  if (!die.IsValid())
3267  return {};
3268 
3269  for (DWARFDIE parent = die.GetParent(); parent.IsValid();
3270  parent = parent.GetParent()) {
3271  const dw_tag_t tag = parent.Tag();
3272  if (tag == DW_TAG_module) {
3273  DWARFDIE module_die = parent;
3274  auto it = m_die_to_module.find(module_die.GetDIE());
3275  if (it != m_die_to_module.end())
3276  return it->second;
3277  const char *name = module_die.GetAttributeValueAsString(DW_AT_name, 0);
3278  if (!name)
3279  return {};
3280 
3283  m_die_to_module.insert({module_die.GetDIE(), id});
3284  return id;
3285  }
3286  }
3287  return {};
3288 }
3289 
3290 static bool IsSubroutine(const DWARFDIE &die) {
3291  switch (die.Tag()) {
3292  case DW_TAG_subprogram:
3293  case DW_TAG_inlined_subroutine:
3294  return true;
3295  default:
3296  return false;
3297  }
3298 }
3299 
3301  for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) {
3302  if (IsSubroutine(candidate)) {
3303  if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3304  return candidate;
3305  } else {
3306  return DWARFDIE();
3307  }
3308  }
3309  }
3310  assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "
3311  "something not in a function");
3312  return DWARFDIE();
3313 }
3314 
3316  for (DWARFDIE candidate : context.children()) {
3317  if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3318  return candidate;
3319  }
3320  }
3321  return DWARFDIE();
3322 }
3323 
3325  const DWARFDIE &function) {
3326  assert(IsSubroutine(function));
3327  for (DWARFDIE context = block; context != function.GetParent();
3328  context = context.GetParent()) {
3329  assert(!IsSubroutine(context) || context == function);
3330  if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) {
3331  return child;
3332  }
3333  }
3334  return DWARFDIE();
3335 }
3336 
3337 clang::DeclContext *
3339  assert(die.Tag() == DW_TAG_lexical_block);
3340  DWARFDIE containing_function_with_abstract_origin =
3342  if (!containing_function_with_abstract_origin) {
3343  return (clang::DeclContext *)ResolveBlockDIE(die);
3344  }
3346  die, containing_function_with_abstract_origin);
3347  CompilerDeclContext decl_context =
3349  return (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
3350 }
3351 
3352 clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) {
3353  if (die && die.Tag() == DW_TAG_lexical_block) {
3354  clang::BlockDecl *decl =
3355  llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]);
3356 
3357  if (!decl) {
3358  DWARFDIE decl_context_die;
3359  clang::DeclContext *decl_context =
3360  GetClangDeclContextContainingDIE(die, &decl_context_die);
3361  decl =
3363 
3364  if (decl)
3365  LinkDeclContextToDIE((clang::DeclContext *)decl, die);
3366  }
3367 
3368  return decl;
3369  }
3370  return nullptr;
3371 }
3372 
3373 clang::NamespaceDecl *
3375  if (die && die.Tag() == DW_TAG_namespace) {
3376  // See if we already parsed this namespace DIE and associated it with a
3377  // uniqued namespace declaration
3378  clang::NamespaceDecl *namespace_decl =
3379  static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]);
3380  if (namespace_decl)
3381  return namespace_decl;
3382  else {
3383  const char *namespace_name = die.GetName();
3384  clang::DeclContext *containing_decl_ctx =
3385  GetClangDeclContextContainingDIE(die, nullptr);
3386  bool is_inline =
3387  die.GetAttributeValueAsUnsigned(DW_AT_export_symbols, 0) != 0;
3388 
3389  namespace_decl = m_ast.GetUniqueNamespaceDeclaration(
3390  namespace_name, containing_decl_ctx, GetOwningClangModule(die),
3391  is_inline);
3392  Log *log =
3393  nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
3394  if (log) {
3395  SymbolFileDWARF *dwarf = die.GetDWARF();
3396  if (namespace_name) {
3397  dwarf->GetObjectFile()->GetModule()->LogMessage(
3398  log,
3399  "ASTContext => %p: 0x%8.8" PRIx64
3400  ": DW_TAG_namespace with DW_AT_name(\"%s\") => "
3401  "clang::NamespaceDecl *%p (original = %p)",
3402  static_cast<void *>(&m_ast.getASTContext()), die.GetID(),
3403  namespace_name, static_cast<void *>(namespace_decl),
3404  static_cast<void *>(namespace_decl->getOriginalNamespace()));
3405  } else {
3406  dwarf->GetObjectFile()->GetModule()->LogMessage(
3407  log,
3408  "ASTContext => %p: 0x%8.8" PRIx64
3409  ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p "
3410  "(original = %p)",
3411  static_cast<void *>(&m_ast.getASTContext()), die.GetID(),
3412  static_cast<void *>(namespace_decl),
3413  static_cast<void *>(namespace_decl->getOriginalNamespace()));
3414  }
3415  }
3416 
3417  if (namespace_decl)
3418  LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die);
3419  return namespace_decl;
3420  }
3421  }
3422  return nullptr;
3423 }
3424 
3426  const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) {
3427  SymbolFileDWARF *dwarf = die.GetDWARF();
3428 
3429  DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die);
3430 
3431  if (decl_ctx_die_copy)
3432  *decl_ctx_die_copy = decl_ctx_die;
3433 
3434  if (decl_ctx_die) {
3435  clang::DeclContext *clang_decl_ctx =
3436  GetClangDeclContextForDIE(decl_ctx_die);
3437  if (clang_decl_ctx)
3438  return clang_decl_ctx;
3439  }
3440  return m_ast.GetTranslationUnitDecl();
3441 }
3442 
3443 clang::DeclContext *
3445  if (die) {
3446  DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE());
3447  if (pos != m_die_to_decl_ctx.end())
3448  return pos->second;
3449  }
3450  return nullptr;
3451 }
3452 
3453 void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx,
3454  const DWARFDIE &die) {
3455  m_die_to_decl_ctx[die.GetDIE()] = decl_ctx;
3456  // There can be many DIEs for a single decl context
3457  // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE());
3458  m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die));
3459 }
3460 
3462  const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die,
3463  lldb_private::Type *class_type, std::vector<DWARFDIE> &failures) {
3464  if (!class_type || !src_class_die || !dst_class_die)
3465  return false;
3466  if (src_class_die.Tag() != dst_class_die.Tag())
3467  return false;
3468 
3469  // We need to complete the class type so we can get all of the method types
3470  // parsed so we can then unique those types to their equivalent counterparts
3471  // in "dst_cu" and "dst_class_die"
3472  class_type->GetFullCompilerType();
3473 
3474  DWARFDIE src_die;
3475  DWARFDIE dst_die;
3476  UniqueCStringMap<DWARFDIE> src_name_to_die;
3477  UniqueCStringMap<DWARFDIE> dst_name_to_die;
3478  UniqueCStringMap<DWARFDIE> src_name_to_die_artificial;
3479  UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial;
3480  for (DWARFDIE src_die : src_class_die.children()) {
3481  if (src_die.Tag() == DW_TAG_subprogram) {
3482  // Make sure this is a declaration and not a concrete instance by looking
3483  // for DW_AT_declaration set to 1. Sometimes concrete function instances
3484  // are placed inside the class definitions and shouldn't be included in
3485  // the list of things are are tracking here.
3486  if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3487  const char *src_name = src_die.GetMangledName();
3488  if (src_name) {
3489  ConstString src_const_name(src_name);
3490  if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3491  src_name_to_die_artificial.Append(src_const_name, src_die);
3492  else
3493  src_name_to_die.Append(src_const_name, src_die);
3494  }
3495  }
3496  }
3497  }
3498  for (DWARFDIE dst_die : dst_class_die.children()) {
3499  if (dst_die.Tag() == DW_TAG_subprogram) {
3500  // Make sure this is a declaration and not a concrete instance by looking
3501  // for DW_AT_declaration set to 1. Sometimes concrete function instances
3502  // are placed inside the class definitions and shouldn't be included in
3503  // the list of things are are tracking here.
3504  if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3505  const char *dst_name = dst_die.GetMangledName();
3506  if (dst_name) {
3507  ConstString dst_const_name(dst_name);
3508  if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3509  dst_name_to_die_artificial.Append(dst_const_name, dst_die);
3510  else
3511  dst_name_to_die.Append(dst_const_name, dst_die);
3512  }
3513  }
3514  }
3515  }
3516  const uint32_t src_size = src_name_to_die.GetSize();
3517  const uint32_t dst_size = dst_name_to_die.GetSize();
3518  Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO |
3519  // DWARF_LOG_TYPE_COMPLETION));
3520 
3521  // Is everything kosher so we can go through the members at top speed?
3522  bool fast_path = true;
3523 
3524  if (src_size != dst_size) {
3525  if (src_size != 0 && dst_size != 0) {
3526  LLDB_LOGF(log,
3527  "warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, "
3528  "but they didn't have the same size (src=%d, dst=%d)",
3529  src_class_die.GetOffset(), dst_class_die.GetOffset(), src_size,
3530  dst_size);
3531  }
3532 
3533  fast_path = false;
3534  }
3535 
3536  uint32_t idx;
3537 
3538  if (fast_path) {
3539  for (idx = 0; idx < src_size; ++idx) {
3540  src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3541  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3542 
3543  if (src_die.Tag() != dst_die.Tag()) {
3544  LLDB_LOGF(log,
3545  "warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3546  "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
3547  src_class_die.GetOffset(), dst_class_die.GetOffset(),
3548  src_die.GetOffset(), src_die.GetTagAsCString(),
3549  dst_die.GetOffset(), dst_die.GetTagAsCString());
3550  fast_path = false;
3551  }
3552 
3553  const char *src_name = src_die.GetMangledName();
3554  const char *dst_name = dst_die.GetMangledName();
3555 
3556  // Make sure the names match
3557  if (src_name == dst_name || (strcmp(src_name, dst_name) == 0))
3558  continue;
3559 
3560  LLDB_LOGF(log,
3561  "warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3562  "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
3563  src_class_die.GetOffset(), dst_class_die.GetOffset(),
3564  src_die.GetOffset(), src_name, dst_die.GetOffset(), dst_name);
3565 
3566  fast_path = false;
3567  }
3568  }
3569 
3570  DWARFASTParserClang *src_dwarf_ast_parser =
3571  static_cast<DWARFASTParserClang *>(
3573  DWARFASTParserClang *dst_dwarf_ast_parser =
3574  static_cast<DWARFASTParserClang *>(
3576 
3577  // Now do the work of linking the DeclContexts and Types.
3578  if (fast_path) {
3579  // We can do this quickly. Just run across the tables index-for-index
3580  // since we know each node has matching names and tags.
3581  for (idx = 0; idx < src_size; ++idx) {
3582  src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3583  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3584 
3585  clang::DeclContext *src_decl_ctx =
3586  src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
3587  if (src_decl_ctx) {
3588  LLDB_LOGF(log, "uniquing decl context %p from 0x%8.8x for 0x%8.8x",
3589  static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
3590  dst_die.GetOffset());
3591  dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
3592  } else {
3593  LLDB_LOGF(log,
3594  "warning: tried to unique decl context from 0x%8.8x for "
3595  "0x%8.8x, but none was found",
3596  src_die.GetOffset(), dst_die.GetOffset());
3597  }
3598 
3599  Type *src_child_type =
3600  dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
3601  if (src_child_type) {
3602  LLDB_LOGF(log,
3603  "uniquing type %p (uid=0x%" PRIx64
3604  ") from 0x%8.8x for 0x%8.8x",
3605  static_cast<void *>(src_child_type), src_child_type->GetID(),
3606  src_die.GetOffset(), dst_die.GetOffset());
3607  dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
3608  } else {
3609  LLDB_LOGF(log,
3610  "warning: tried to unique lldb_private::Type from "
3611  "0x%8.8x for 0x%8.8x, but none was found",
3612  src_die.GetOffset(), dst_die.GetOffset());
3613  }
3614  }
3615  } else {
3616  // We must do this slowly. For each member of the destination, look up a
3617  // member in the source with the same name, check its tag, and unique them
3618  // if everything matches up. Report failures.
3619 
3620  if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) {
3621  src_name_to_die.Sort();
3622 
3623  for (idx = 0; idx < dst_size; ++idx) {
3624  ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx);
3625  dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3626  src_die = src_name_to_die.Find(dst_name, DWARFDIE());
3627 
3628  if (src_die && (src_die.Tag() == dst_die.Tag())) {
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 "
3639  "for 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(
3647  log,
3648  "uniquing type %p (uid=0x%" PRIx64 ") 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()] =
3652  src_child_type;
3653  } else {
3654  LLDB_LOGF(log,
3655  "warning: tried to unique lldb_private::Type from "
3656  "0x%8.8x for 0x%8.8x, but none was found",
3657  src_die.GetOffset(), dst_die.GetOffset());
3658  }
3659  } else {
3660  LLDB_LOGF(log, "warning: couldn't find a match for 0x%8.8x",
3661  dst_die.GetOffset());
3662 
3663  failures.push_back(dst_die);
3664  }
3665  }
3666  }
3667  }
3668 
3669  const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize();
3670  const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize();
3671 
3672  if (src_size_artificial && dst_size_artificial) {
3673  dst_name_to_die_artificial.Sort();
3674 
3675  for (idx = 0; idx < src_size_artificial; ++idx) {
3676  ConstString src_name_artificial =
3677  src_name_to_die_artificial.GetCStringAtIndex(idx);
3678  src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
3679  dst_die =
3680  dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE());
3681 
3682  if (dst_die) {
3683  // Both classes have the artificial types, link them
3684  clang::DeclContext *src_decl_ctx =
3685  src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
3686  if (src_decl_ctx) {
3687  LLDB_LOGF(log, "uniquing decl context %p from 0x%8.8x for 0x%8.8x",
3688  static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
3689  dst_die.GetOffset());
3690  dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
3691  } else {
3692  LLDB_LOGF(log,
3693  "warning: tried to unique decl context from 0x%8.8x "
3694  "for 0x%8.8x, but none was found",
3695  src_die.GetOffset(), dst_die.GetOffset());
3696  }
3697 
3698  Type *src_child_type =
3699  dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
3700  if (src_child_type) {
3701  LLDB_LOGF(
3702  log,
3703  "uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
3704  static_cast<void *>(src_child_type), src_child_type->GetID(),
3705  src_die.GetOffset(), dst_die.GetOffset());
3706  dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
3707  } else {
3708  LLDB_LOGF(log,
3709  "warning: tried to unique lldb_private::Type from "
3710  "0x%8.8x for 0x%8.8x, but none was found",
3711  src_die.GetOffset(), dst_die.GetOffset());
3712  }
3713  }
3714  }
3715  }
3716 
3717  if (dst_size_artificial) {
3718  for (idx = 0; idx < dst_size_artificial; ++idx) {
3719  ConstString dst_name_artificial =
3720  dst_name_to_die_artificial.GetCStringAtIndex(idx);
3721  dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
3722  LLDB_LOGF(log,
3723  "warning: need to create artificial method for 0x%8.8x for "
3724  "method '%s'",
3725  dst_die.GetOffset(), dst_name_artificial.GetCString());
3726 
3727  failures.push_back(dst_die);
3728  }
3729  }
3730 
3731  return !failures.empty();
3732 }
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
lldb_private::ClangASTImporter::LayoutInfo::field_offsets
llvm::DenseMap< const clang::FieldDecl *, uint64_t > field_offsets
Definition: ClangASTImporter.h:73
lldb_private::TypeSystemClang::CreateBlockPointerType
CompilerType CreateBlockPointerType(const CompilerType &function_type)
Definition: TypeSystemClang.cpp:2230
ParsedDWARFTypeAttributes::is_vector
bool is_vector
Definition: DWARFASTParserClang.h:233
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:3461
SymbolFileDWARFDebugMap.h
lldb_private::TypeSystemClang::CreateParameterDeclaration
clang::ParmVarDecl * CreateParameterDeclaration(clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module, const char *name, const CompilerType &param_type, int storage, bool add_decl=false)
Definition: TypeSystemClang.cpp:2205
lldb_private::TypeSystemClang::CreateBlockDeclaration
clang::BlockDecl * CreateBlockDeclaration(clang::DeclContext *ctx, OptionalClangModuleID owning_module)
Definition: TypeSystemClang.cpp:1917
lldb_private::DW_TAG_value_to_name
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:3100
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Definition: ExecutionContext.h:292
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
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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:3324
lldb_private::TypeSystemClang::TransferBaseClasses
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Definition: TypeSystemClang.cpp:7724
lldb_private::TypeSystemClang::GetCompilerDecl
CompilerDecl GetCompilerDecl(clang::Decl *decl)
Creates a CompilerDecl from the given Decl with the current TypeSystemClang instance as its typesyste...
Definition: TypeSystemClang.h:468
lldb_private::TypeSystemClang::getASTContext
clang::ASTContext & getASTContext()
Returns the clang::ASTContext instance managed by this TypeSystemClang.
Definition: TypeSystemClang.cpp:694
lldb_private::Address::IsValid
bool IsValid() const
Check if the object state is valid.
Definition: Address.h:332
ParsedDWARFTypeAttributes::name
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DWARFBaseDIE::GetDIERef
llvm::Optional< DIERef > GetDIERef() const
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lldb_private::TypeSystemClang::CreateDeclContext
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Parsed form of all attributes that are relevant for type reconstruction.
Definition: DWARFASTParserClang.h:223
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Definition: CompilerDecl.h:28
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Definition: ConstString.h:193
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Definition: CompilerType.cpp:489
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Definition: DWARFBaseDIE.h:54
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Parse a structure, class, or union type DIE.
Definition: DWARFASTParserClang.cpp:1410
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Definition: DWARFASTParserClang.cpp:1811
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Definition: DWARFASTParserClang.cpp:1814
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Definition: DWARFASTParserClang.cpp:233
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Definition: DWARFASTParserClang.cpp:3290
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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:2239
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llvm::StringRef GetString() const
Definition: StreamString.cpp:51
DWARFAttributes
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
bool IsIntegerOrEnumerationType(bool &is_signed) const
Definition: CompilerType.cpp:153
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Definition: DWARFDIE.h:16
DWARFFormValue::Boolean
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Definition: DWARFFormValue.h:63
DWARFASTParserClang::GetClangDeclForDIE
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Definition: DWARFASTParserClang.cpp:3121
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Definition: Type.cpp:339
lldb_private::Type::ResolveState
ResolveState
Definition: Type.h:90
DEBUG_PRINTF
#define DEBUG_PRINTF(fmt,...)
Definition: DWARFASTParserClang.cpp:55
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T GetValueAtIndexUnchecked(uint32_t idx) const
Definition: UniqueCStringMap.h:68
lldb_private::ClangASTImporter::LayoutInfo::base_offsets
OffsetMap base_offsets
Definition: ClangASTImporter.h:74
lldb::eEncodingInvalid
@ eEncodingInvalid
Definition: lldb-enumerations.h:147
SymbolFileDWARFDwo.h
DWARFASTParserClang::LinkDeclContextToDIE
void LinkDeclContextToDIE(clang::DeclContext *decl_ctx, const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3453
error
static llvm::raw_ostream & error(Stream &strm)
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:2885
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:3425
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:866
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:1375
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:3222
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Definition: ABISysV_arc.cpp:61
lldb_private::TypeSystemClang::GetAsCXXRecordDecl
static clang::CXXRecordDecl * GetAsCXXRecordDecl(lldb::opaque_compiler_type_t type)
Definition: TypeSystemClang.cpp:7218
DWARFASTParserClang::ParseFunctionFromDWARF
lldb_private::Function * ParseFunctionFromDWARF(lldb_private::CompileUnit &comp_unit, const DWARFDIE &die) override
Definition: DWARFASTParserClang.cpp:2202
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:237
SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext
lldb::TypeSP FindDefinitionTypeForDWARFDeclContext(const DWARFDeclContext &die_decl_ctx)
Definition: SymbolFileDWARFDebugMap.cpp:1088
Log.h
DWARFASTParserClang::DelayedAddObjCClassProperty::Finalize
bool Finalize()
Definition: DWARFASTParserClang.cpp:1801
ParsedDWARFTypeAttributes::is_inline
bool is_inline
Definition: DWARFASTParserClang.h:231
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:186
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:2128
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:1952
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:2304
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:226
DWARFASTParserClang::FieldInfo::bit_offset
uint64_t bit_offset
Definition: DWARFASTParserClang.h:178
lldb::eAccessNone
@ eAccessNone
Definition: lldb-enumerations.h:508
lldb_private::TypeSystemClang::SetMetadata
void SetMetadata(const clang::Decl *object, ClangASTMetadata &meta_data)
Definition: TypeSystemClang.cpp:2554
lldb_private::TypeSystemClang::SetObjCSuperClass
static bool SetObjCSuperClass(const CompilerType &type, const CompilerType &superclass_compiler_type)
Definition: TypeSystemClang.cpp:7743
DWARFBaseDIE::GetTagAsCString
const char * GetTagAsCString() const
Definition: DWARFBaseDIE.cpp:36
DWARFASTParserClang::FieldInfo::SetIsBitfield
void SetIsBitfield(bool flag)
Definition: DWARFASTParserClang.h:183
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
SymbolFileDWARF::GetLanguageFamily
static lldb::LanguageType GetLanguageFamily(DWARFUnit &unit)
Same as GetLanguage() but reports all C++ versions as C++ (no version).
Definition: SymbolFileDWARF.cpp:3886
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:754
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
DWARFDIE::children
llvm::iterator_range< T > children() const
The range of all the children of this DIE.
Definition: DWARFDIE.h:98
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:242
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:3860
ObjCLanguage.h
DWARFUnit::Supports_unnamed_objc_bitfields
bool Supports_unnamed_objc_bitfields()
Definition: DWARFUnit.cpp:611
DWARFFormValue
Definition: DWARFFormValue.h:20
SymbolFileDWARF::GetDIEToType
virtual DIEToTypePtr & GetDIEToType()
Definition: SymbolFileDWARF.h:461
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::ParseSingleMember
void ParseSingleMember(const DWARFDIE &die, const DWARFDIE &parent_die, const lldb_private::CompilerType &class_clang_type, lldb::AccessType default_accessibility, DelayedPropertyList &delayed_properties, lldb_private::ClangASTImporter::LayoutInfo &layout_info, FieldInfo &last_field_info)
Definition: DWARFASTParserClang.cpp:2316
DWARFASTParserClang::DelayedAddObjCClassProperty::m_class_opaque_type
CompilerType m_class_opaque_type
Definition: DWARFASTParserClang.cpp:1809
lldb::eBasicTypeVoid
@ eBasicTypeVoid
Definition: lldb-enumerations.h:743
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:1693
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:1853
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:3315
lldb::eLanguageTypeObjC
@ eLanguageTypeObjC
Objective-C.
Definition: lldb-enumerations.h:453
string
string(SUBSTRING ${p} 10 -1 pStripped) if($
Definition: Plugins/CMakeLists.txt:39
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:336
SymbolFileDWARF::GetExternalModule
lldb::ModuleSP GetExternalModule(lldb_private::ConstString name)
Definition: SymbolFileDWARF.cpp:1565
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:229
lldb::eBasicTypeObjCClass
@ eBasicTypeObjCClass
Definition: lldb-enumerations.h:771
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:235
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:250
lldb_private::UniqueCStringMap
Definition: UniqueCStringMap.h:26
lldb_private::TypeMap
Definition: TypeMap.h:20
SymbolFileDWARF::GetDWARFParser
static DWARFASTParser * GetDWARFParser(DWARFUnit &unit)
Definition: SymbolFileDWARF.cpp:3831
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:176
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:637
lldb_private::TypeSystemClang::AddMethodOverridesForCXXRecordType
void AddMethodOverridesForCXXRecordType(lldb::opaque_compiler_type_t type)
Definition: TypeSystemClang.cpp:7701
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:563
lldb_private::TypeSystemClang::SetFunctionParameters
void SetFunctionParameters(clang::FunctionDecl *function_decl, llvm::ArrayRef< clang::ParmVarDecl * > params)
Definition: TypeSystemClang.cpp:2223
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:1501
lldb::eBasicTypeObjCID
@ eBasicTypeObjCID
Definition: lldb-enumerations.h:770
TypeList.h
ParsedDWARFTypeAttributes::calling_convention
size_t calling_convention
Definition: DWARFASTParserClang.h:249
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:184
lldbassert
#define lldbassert(x)
Definition: LLDBAssert.h:15
ParsedDWARFTypeAttributes::encoding
uint32_t encoding
Definition: DWARFASTParserClang.h:252
DWARFASTParserClang::m_decl_to_die
DeclToDIEMap m_decl_to_die
Definition: DWARFASTParserClang.h:90
DWARFASTParserClang::~DWARFASTParserClang
~DWARFASTParserClang() override
DWARFASTParserClang
Definition: DWARFASTParserClang.h:37
ParsedDWARFTypeAttributes::is_complete_objc_class
bool is_complete_objc_class
Definition: DWARFASTParserClang.h:228
SymbolFileDWARF::GetDecl
static lldb_private::CompilerDecl GetDecl(const DWARFDIE &die)
Definition: SymbolFileDWARF.cpp:3841
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:9218
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:3882
lldb_private::OptionalClangModuleID
A Clang module ID.
Definition: TypeSystemClang.h:57
uint32_t
DWARFASTParserClang::FieldInfo::bit_size
uint64_t bit_size
Definition: DWARFASTParserClang.h:177
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:4268
lldb_private::ExecutionContext::GetFrameSP
const lldb::StackFrameSP & GetFrameSP() const
Get accessor to get the frame shared pointer.
Definition: ExecutionContext.h:469
ParsedDWARFTypeAttributes::mangled_name
const char * mangled_name
Definition: DWARFASTParserClang.h:238
DWARFASTParserClang.h
DWARFASTParserClang::GetDeclContextForUIDFromDWARF
lldb_private::CompilerDeclContext GetDeclContextForUIDFromDWARF(const DWARFDIE &die) override
Definition: DWARFASTParserClang.cpp:2120
id
void * id
Definition: PlatformiOSSimulatorCoreSimulatorSupport.h:20
SymbolFileDWARF::GetDeclContext
static lldb_private::CompilerDeclContext GetDeclContext(const DWARFDIE &die)
Definition: SymbolFileDWARF.cpp:3847
ParsedDWARFTypeAttributes::byte_size
llvm::Optional< uint64_t > byte_size
Definition: DWARFASTParserClang.h:248
lldb_private::TypeSystemClang::CreateVariableDeclaration
clang::VarDecl * CreateVariableDeclaration(clang::DeclContext *decl_context, OptionalClangModuleID owning_module, const char *name, clang::QualType type)
Definition: TypeSystemClang.cpp:1985
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:2101
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:2061
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:1426
lldb_private::Type::GetForwardCompilerType
CompilerType GetForwardCompilerType()
Definition: Type.cpp:656
DWARFASTParserClang::ParseEnum
lldb::TypeSP ParseEnum(const lldb_private::SymbolContext &sc, const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:771
UINT32_MAX
#define UINT32_MAX
Definition: lldb-defines.h:31
DWARFASTParserClang::ParseArrayType
lldb::TypeSP ParseArrayType(const DWARFDIE &die, ParsedDWARFTypeAttributes &attrs)
Definition: DWARFASTParserClang.cpp:1299
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:773
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
Definition: lldb-defines.h:86
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
DWARFAttributes::AttributeAtIndex
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:245
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:240
DWARFASTParserClang::ResolveBlockDIE
clang::BlockDecl * ResolveBlockDIE(const DWARFDIE &die)
Definition: DWARFASTParserClang.cpp:3352
lldb_private::TypeSystemClang::TemplateParameterInfos::args
llvm::SmallVector< clang::TemplateArgument, 2 > args
Definition: TypeSystemClang.h:334
lldb::user_id_t
uint64_t user_id_t
Definition: lldb-types.h:84
ParsedDWARFTypeAttributes::containing_type
DWARFFormValue containing_type
Definition: DWARFASTParserClang.h:243
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:879
lldb_private::Block::FindBlockByID
Block * FindBlockByID(lldb::user_id_t block_id)
Definition: Block.cpp:111
GetContainingFunctionWithAbstractOrigin
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Definition: DWARFAttribute.h:51
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Definition: DWARFExpression.cpp:72
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Definition: lldb-enumerations.h:507
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