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SymbolFileDWARF.cpp
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1 //===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===//
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 "SymbolFileDWARF.h"
10 
11 #include "llvm/Support/Casting.h"
12 #include "llvm/Support/Threading.h"
13 
14 #include "lldb/Core/Module.h"
15 #include "lldb/Core/ModuleList.h"
16 #include "lldb/Core/ModuleSpec.h"
18 #include "lldb/Core/Section.h"
19 #include "lldb/Core/StreamFile.h"
20 #include "lldb/Core/Value.h"
21 #include "lldb/Utility/ArchSpec.h"
23 #include "lldb/Utility/Scalar.h"
25 #include "lldb/Utility/Timer.h"
26 
29 
30 #include "lldb/Host/FileSystem.h"
31 #include "lldb/Host/Host.h"
32 
35 
36 #include "lldb/Symbol/Block.h"
38 #include "lldb/Symbol/ClangUtil.h"
43 #include "lldb/Symbol/LineTable.h"
45 #include "lldb/Symbol/ObjectFile.h"
47 #include "lldb/Symbol/TypeMap.h"
48 #include "lldb/Symbol/TypeSystem.h"
50 
51 #include "lldb/Target/Language.h"
52 #include "lldb/Target/Target.h"
53 
54 #include "AppleDWARFIndex.h"
55 #include "DWARFASTParser.h"
56 #include "DWARFASTParserClang.h"
57 #include "DWARFDebugAbbrev.h"
58 #include "DWARFDebugAranges.h"
59 #include "DWARFDebugInfo.h"
60 #include "DWARFDebugLine.h"
61 #include "DWARFDebugMacro.h"
62 #include "DWARFDebugRanges.h"
63 #include "DWARFDeclContext.h"
64 #include "DWARFFormValue.h"
65 #include "DWARFUnit.h"
66 #include "DebugNamesDWARFIndex.h"
67 #include "LogChannelDWARF.h"
68 #include "ManualDWARFIndex.h"
70 #include "SymbolFileDWARFDwo.h"
71 #include "SymbolFileDWARFDwp.h"
72 
73 #include "llvm/Support/FileSystem.h"
74 
75 #include <algorithm>
76 #include <map>
77 #include <memory>
78 
79 #include <ctype.h>
80 #include <string.h>
81 
82 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
83 
84 #ifdef ENABLE_DEBUG_PRINTF
85 #include <stdio.h>
86 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
87 #else
88 #define DEBUG_PRINTF(fmt, ...)
89 #endif
90 
91 using namespace lldb;
92 using namespace lldb_private;
93 
94 // static inline bool
95 // child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
96 //{
97 // switch (tag)
98 // {
99 // default:
100 // break;
101 // case DW_TAG_subprogram:
102 // case DW_TAG_inlined_subroutine:
103 // case DW_TAG_class_type:
104 // case DW_TAG_structure_type:
105 // case DW_TAG_union_type:
106 // return true;
107 // }
108 // return false;
109 //}
110 //
111 
112 namespace {
113 
114 static constexpr PropertyDefinition g_properties[] = {
115  {"comp-dir-symlink-paths", OptionValue::eTypeFileSpecList, true, 0, nullptr,
116  {},
117  "If the DW_AT_comp_dir matches any of these paths the symbolic "
118  "links will be resolved at DWARF parse time."},
119  {"ignore-file-indexes", OptionValue::eTypeBoolean, true, 0, nullptr, {},
120  "Ignore indexes present in the object files and always index DWARF "
121  "manually."}};
122 
123 enum {
124  ePropertySymLinkPaths,
125  ePropertyIgnoreIndexes,
126 };
127 
128 class PluginProperties : public Properties {
129 public:
130  static ConstString GetSettingName() {
132  }
133 
134  PluginProperties() {
135  m_collection_sp = std::make_shared<OptionValueProperties>(GetSettingName());
136  m_collection_sp->Initialize(g_properties);
137  }
138 
139  FileSpecList GetSymLinkPaths() {
140  const OptionValueFileSpecList *option_value =
141  m_collection_sp->GetPropertyAtIndexAsOptionValueFileSpecList(
142  nullptr, true, ePropertySymLinkPaths);
143  assert(option_value);
144  return option_value->GetCurrentValue();
145  }
146 
147  bool IgnoreFileIndexes() const {
148  return m_collection_sp->GetPropertyAtIndexAsBoolean(
149  nullptr, ePropertyIgnoreIndexes, false);
150  }
151 };
152 
153 typedef std::shared_ptr<PluginProperties> SymbolFileDWARFPropertiesSP;
154 
155 static const SymbolFileDWARFPropertiesSP &GetGlobalPluginProperties() {
156  static const auto g_settings_sp(std::make_shared<PluginProperties>());
157  return g_settings_sp;
158 }
159 
160 } // anonymous namespace end
161 
163  return GetGlobalPluginProperties()->GetSymLinkPaths();
164 }
165 
167  return nullptr;
168 }
169 
171  LogChannelDWARF::Initialize();
172  PluginManager::RegisterPlugin(GetPluginNameStatic(),
173  GetPluginDescriptionStatic(), CreateInstance,
174  DebuggerInitialize);
175 }
176 
178  if (!PluginManager::GetSettingForSymbolFilePlugin(
179  debugger, PluginProperties::GetSettingName())) {
180  const bool is_global_setting = true;
181  PluginManager::CreateSettingForSymbolFilePlugin(
182  debugger, GetGlobalPluginProperties()->GetValueProperties(),
183  ConstString("Properties for the dwarf symbol-file plug-in."),
184  is_global_setting);
185  }
186 }
187 
189  PluginManager::UnregisterPlugin(CreateInstance);
190  LogChannelDWARF::Terminate();
191 }
192 
194  static ConstString g_name("dwarf");
195  return g_name;
196 }
197 
199  return "DWARF and DWARF3 debug symbol file reader.";
200 }
201 
203  return new SymbolFileDWARF(obj_file);
204 }
205 
207  // This method can be called without going through the symbol vendor so we
208  // need to lock the module.
209  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
210  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
211  if (debug_map_symfile)
212  return debug_map_symfile->GetTypeList();
213  else
214  return m_obj_file->GetModule()->GetTypeList();
215 }
216 void SymbolFileDWARF::GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset,
217  dw_offset_t max_die_offset, uint32_t type_mask,
218  TypeSet &type_set) {
219  if (die) {
220  const dw_offset_t die_offset = die.GetOffset();
221 
222  if (die_offset >= max_die_offset)
223  return;
224 
225  if (die_offset >= min_die_offset) {
226  const dw_tag_t tag = die.Tag();
227 
228  bool add_type = false;
229 
230  switch (tag) {
231  case DW_TAG_array_type:
232  add_type = (type_mask & eTypeClassArray) != 0;
233  break;
234  case DW_TAG_unspecified_type:
235  case DW_TAG_base_type:
236  add_type = (type_mask & eTypeClassBuiltin) != 0;
237  break;
238  case DW_TAG_class_type:
239  add_type = (type_mask & eTypeClassClass) != 0;
240  break;
241  case DW_TAG_structure_type:
242  add_type = (type_mask & eTypeClassStruct) != 0;
243  break;
244  case DW_TAG_union_type:
245  add_type = (type_mask & eTypeClassUnion) != 0;
246  break;
247  case DW_TAG_enumeration_type:
248  add_type = (type_mask & eTypeClassEnumeration) != 0;
249  break;
250  case DW_TAG_subroutine_type:
251  case DW_TAG_subprogram:
252  case DW_TAG_inlined_subroutine:
253  add_type = (type_mask & eTypeClassFunction) != 0;
254  break;
255  case DW_TAG_pointer_type:
256  add_type = (type_mask & eTypeClassPointer) != 0;
257  break;
258  case DW_TAG_rvalue_reference_type:
259  case DW_TAG_reference_type:
260  add_type = (type_mask & eTypeClassReference) != 0;
261  break;
262  case DW_TAG_typedef:
263  add_type = (type_mask & eTypeClassTypedef) != 0;
264  break;
265  case DW_TAG_ptr_to_member_type:
266  add_type = (type_mask & eTypeClassMemberPointer) != 0;
267  break;
268  }
269 
270  if (add_type) {
271  const bool assert_not_being_parsed = true;
272  Type *type = ResolveTypeUID(die, assert_not_being_parsed);
273  if (type) {
274  if (type_set.find(type) == type_set.end())
275  type_set.insert(type);
276  }
277  }
278  }
279 
280  for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid();
281  child_die = child_die.GetSibling()) {
282  GetTypes(child_die, min_die_offset, max_die_offset, type_mask, type_set);
283  }
284  }
285 }
286 
288  TypeClass type_mask, TypeList &type_list)
289 
290 {
291  ASSERT_MODULE_LOCK(this);
292  TypeSet type_set;
293 
294  CompileUnit *comp_unit = NULL;
295  DWARFUnit *dwarf_cu = NULL;
296  if (sc_scope)
297  comp_unit = sc_scope->CalculateSymbolContextCompileUnit();
298 
299  if (comp_unit) {
300  dwarf_cu = GetDWARFCompileUnit(comp_unit);
301  if (dwarf_cu == 0)
302  return 0;
303  GetTypes(dwarf_cu->DIE(), dwarf_cu->GetOffset(),
304  dwarf_cu->GetNextCompileUnitOffset(), type_mask, type_set);
305  } else {
306  DWARFDebugInfo *info = DebugInfo();
307  if (info) {
308  const size_t num_cus = info->GetNumCompileUnits();
309  for (size_t cu_idx = 0; cu_idx < num_cus; ++cu_idx) {
310  dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
311  if (dwarf_cu) {
312  GetTypes(dwarf_cu->DIE(), 0, UINT32_MAX, type_mask, type_set);
313  }
314  }
315  }
316  }
317 
318  std::set<CompilerType> compiler_type_set;
319  size_t num_types_added = 0;
320  for (Type *type : type_set) {
321  CompilerType compiler_type = type->GetForwardCompilerType();
322  if (compiler_type_set.find(compiler_type) == compiler_type_set.end()) {
323  compiler_type_set.insert(compiler_type);
324  type_list.Insert(type->shared_from_this());
325  ++num_types_added;
326  }
327  }
328  return num_types_added;
329 }
330 
331 // Gets the first parent that is a lexical block, function or inlined
332 // subroutine, or compile unit.
333 DWARFDIE
335  DWARFDIE die;
336  for (die = child_die.GetParent(); die; die = die.GetParent()) {
337  dw_tag_t tag = die.Tag();
338 
339  switch (tag) {
340  case DW_TAG_compile_unit:
341  case DW_TAG_partial_unit:
342  case DW_TAG_subprogram:
343  case DW_TAG_inlined_subroutine:
344  case DW_TAG_lexical_block:
345  return die;
346  }
347  }
348  return DWARFDIE();
349 }
350 
352  : SymbolFile(objfile), UserID(uint64_t(DW_INVALID_OFFSET)
353  << 32), // Used by SymbolFileDWARFDebugMap to
354  // when this class parses .o files to
355  // contain the .o file index/ID
356  m_debug_map_module_wp(), m_debug_map_symfile(NULL),
357  m_context(*objfile->GetModule()), m_data_debug_abbrev(),
358  m_data_debug_frame(), m_data_debug_info(), m_data_debug_line(),
359  m_data_debug_macro(), m_data_debug_loc(), m_data_debug_ranges(),
360  m_data_debug_rnglists(), m_data_debug_str(), m_data_apple_names(),
361  m_data_apple_types(), m_data_apple_namespaces(), m_abbr(), m_info(),
362  m_line(), m_fetched_external_modules(false),
363  m_supports_DW_AT_APPLE_objc_complete_type(eLazyBoolCalculate), m_ranges(),
364  m_unique_ast_type_map() {}
365 
367 
369  static ConstString g_dwarf_section_name("__DWARF");
370  return g_dwarf_section_name;
371 }
372 
374  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
375  if (debug_map_symfile)
376  return debug_map_symfile->GetUniqueDWARFASTTypeMap();
377  else
378  return m_unique_ast_type_map;
379 }
380 
382  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
383  TypeSystem *type_system;
384  if (debug_map_symfile) {
385  type_system = debug_map_symfile->GetTypeSystemForLanguage(language);
386  } else {
387  type_system = m_obj_file->GetModule()->GetTypeSystemForLanguage(language);
388  if (type_system)
389  type_system->SetSymbolFile(this);
390  }
391  return type_system;
392 }
393 
395  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO);
396 
397  if (!GetGlobalPluginProperties()->IgnoreFileIndexes()) {
398  DWARFDataExtractor apple_names, apple_namespaces, apple_types, apple_objc;
403 
404  m_index = AppleDWARFIndex::Create(
405  *GetObjectFile()->GetModule(), apple_names, apple_namespaces,
406  apple_types, apple_objc, get_debug_str_data());
407 
408  if (m_index)
409  return;
410 
411  DWARFDataExtractor debug_names;
413  if (debug_names.GetByteSize() > 0) {
414  llvm::Expected<std::unique_ptr<DebugNamesDWARFIndex>> index_or =
415  DebugNamesDWARFIndex::Create(*GetObjectFile()->GetModule(),
416  debug_names, get_debug_str_data(),
417  DebugInfo());
418  if (index_or) {
419  m_index = std::move(*index_or);
420  return;
421  }
422  LLDB_LOG_ERROR(log, index_or.takeError(),
423  "Unable to read .debug_names data: {0}");
424  }
425  }
426 
427  m_index = llvm::make_unique<ManualDWARFIndex>(*GetObjectFile()->GetModule(),
428  DebugInfo());
429 }
430 
432  return version >= 2 && version <= 5;
433 }
434 
436  uint32_t abilities = 0;
437  if (m_obj_file != NULL) {
438  const Section *section = NULL;
439  const SectionList *section_list = m_obj_file->GetSectionList();
440  if (section_list == NULL)
441  return 0;
442 
443  // On non Apple platforms we might have .debug_types debug info that is
444  // created by using "-fdebug-types-section". LLDB currently will try to
445  // load this debug info, but it causes crashes during debugging when types
446  // are missing since it doesn't know how to parse the info in the
447  // .debug_types type units. This causes all complex debug info types to be
448  // unresolved. Because this causes LLDB to crash and since it really
449  // doesn't provide a solid debuggiung experience, we should disable trying
450  // to debug this kind of DWARF until support gets added or deprecated.
451  if (section_list->FindSectionByName(ConstString(".debug_types"))) {
452  m_obj_file->GetModule()->ReportWarning(
453  "lldb doesn’t support .debug_types debug info");
454  return 0;
455  }
456 
457  uint64_t debug_abbrev_file_size = 0;
458  uint64_t debug_info_file_size = 0;
459  uint64_t debug_line_file_size = 0;
460 
461  section = section_list->FindSectionByName(GetDWARFMachOSegmentName()).get();
462 
463  if (section)
464  section_list = &section->GetChildren();
465 
466  section =
467  section_list->FindSectionByType(eSectionTypeDWARFDebugInfo, true).get();
468  if (section != NULL) {
469  debug_info_file_size = section->GetFileSize();
470 
471  section =
473  .get();
474  if (section)
475  debug_abbrev_file_size = section->GetFileSize();
476 
477  DWARFDebugAbbrev *abbrev = DebugAbbrev();
478  if (abbrev) {
479  std::set<dw_form_t> invalid_forms;
480  abbrev->GetUnsupportedForms(invalid_forms);
481  if (!invalid_forms.empty()) {
482  StreamString error;
483  error.Printf("unsupported DW_FORM value%s:", invalid_forms.size() > 1 ? "s" : "");
484  for (auto form : invalid_forms)
485  error.Printf(" %#x", form);
486  m_obj_file->GetModule()->ReportWarning("%s", error.GetString().str().c_str());
487  return 0;
488  }
489  }
490 
491  section =
492  section_list->FindSectionByType(eSectionTypeDWARFDebugLine, true)
493  .get();
494  if (section)
495  debug_line_file_size = section->GetFileSize();
496  } else {
497  const char *symfile_dir_cstr =
499  if (symfile_dir_cstr) {
500  if (strcasestr(symfile_dir_cstr, ".dsym")) {
501  if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo) {
502  // We have a dSYM file that didn't have a any debug info. If the
503  // string table has a size of 1, then it was made from an
504  // executable with no debug info, or from an executable that was
505  // stripped.
506  section =
507  section_list->FindSectionByType(eSectionTypeDWARFDebugStr, true)
508  .get();
509  if (section && section->GetFileSize() == 1) {
510  m_obj_file->GetModule()->ReportWarning(
511  "empty dSYM file detected, dSYM was created with an "
512  "executable with no debug info.");
513  }
514  }
515  }
516  }
517  }
518 
519  if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
520  abilities |= CompileUnits | Functions | Blocks | GlobalVariables |
522 
523  if (debug_line_file_size > 0)
524  abilities |= LineTables;
525  }
526  return abilities;
527 }
528 
529 const DWARFDataExtractor &
531  DWARFDataSegment &data_segment) {
532  llvm::call_once(data_segment.m_flag, [this, sect_type, &data_segment] {
533  this->LoadSectionData(sect_type, std::ref(data_segment.m_data));
534  });
535  return data_segment.m_data;
536 }
537 
539  DWARFDataExtractor &data) {
540  ModuleSP module_sp(m_obj_file->GetModule());
541  const SectionList *section_list = module_sp->GetSectionList();
542  if (!section_list)
543  return;
544 
545  SectionSP section_sp(section_list->FindSectionByType(sect_type, true));
546  if (!section_sp)
547  return;
548 
549  data.Clear();
550  m_obj_file->ReadSectionData(section_sp.get(), data);
551 }
552 
556 }
557 
560 }
561 
564 }
565 
568 }
569 
572 }
573 
576 }
577 
580 }
581 
583  const DWARFDataExtractor &debugLocData = get_debug_loc_data();
584  if (debugLocData.GetByteSize() > 0)
585  return debugLocData;
586  return get_debug_loclists_data();
587 }
588 
591 }
592 
596 }
597 
601 }
602 
606 }
607 
610 }
611 
615 }
616 
619 }
620 
623 }
624 
627 }
628 
632 }
633 
636 }
637 
641 }
642 
644  if (m_abbr)
645  return m_abbr.get();
646 
647  const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data();
648  if (debug_abbrev_data.GetByteSize() == 0)
649  return nullptr;
650 
651  auto abbr = llvm::make_unique<DWARFDebugAbbrev>();
652  llvm::Error error = abbr->parse(debug_abbrev_data);
653  if (error) {
654  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO);
655  LLDB_LOG_ERROR(log, std::move(error),
656  "Unable to read .debug_abbrev section: {0}");
657  return nullptr;
658  }
659 
660  m_abbr = std::move(abbr);
661  return m_abbr.get();
662 }
663 
665  return m_abbr.get();
666 }
667 
669  if (m_info == NULL) {
670  static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
671  Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION,
672  static_cast<void *>(this));
673  if (get_debug_info_data().GetByteSize() > 0) {
674  m_info = llvm::make_unique<DWARFDebugInfo>(m_context);
675  m_info->SetDwarfData(this);
676  }
677  }
678  return m_info.get();
679 }
680 
682  return m_info.get();
683 }
684 
685 DWARFUnit *
687  if (!comp_unit)
688  return nullptr;
689 
690  DWARFDebugInfo *info = DebugInfo();
691  if (info) {
692  // The compile unit ID is the index of the DWARF unit.
693  DWARFUnit *dwarf_cu = info->GetCompileUnitAtIndex(comp_unit->GetID());
694  if (dwarf_cu && dwarf_cu->GetUserData() == NULL)
695  dwarf_cu->SetUserData(comp_unit);
696  return dwarf_cu;
697  }
698  return NULL;
699 }
700 
702  if (m_ranges == NULL) {
703  static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
704  Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION,
705  static_cast<void *>(this));
706 
707  if (get_debug_ranges_data().GetByteSize() > 0)
708  m_ranges.reset(new DWARFDebugRanges());
709  else if (get_debug_rnglists_data().GetByteSize() > 0)
710  m_ranges.reset(new DWARFDebugRngLists());
711 
712  if (m_ranges)
713  m_ranges->Extract(this);
714  }
715  return m_ranges.get();
716 }
717 
719  return m_ranges.get();
720 }
721 
722 lldb::CompUnitSP SymbolFileDWARF::ParseCompileUnit(DWARFUnit *dwarf_cu,
723  uint32_t cu_idx) {
724  CompUnitSP cu_sp;
725  if (dwarf_cu) {
726  CompileUnit *comp_unit = (CompileUnit *)dwarf_cu->GetUserData();
727  if (comp_unit) {
728  // We already parsed this compile unit, had out a shared pointer to it
729  cu_sp = comp_unit->shared_from_this();
730  } else {
731  if (dwarf_cu->GetSymbolFileDWARF() != this) {
732  return dwarf_cu->GetSymbolFileDWARF()->ParseCompileUnit(dwarf_cu,
733  cu_idx);
734  } else if (dwarf_cu->GetOffset() == 0 && GetDebugMapSymfile()) {
735  // Let the debug map create the compile unit
736  cu_sp = m_debug_map_symfile->GetCompileUnit(this);
737  dwarf_cu->SetUserData(cu_sp.get());
738  } else {
739  ModuleSP module_sp(m_obj_file->GetModule());
740  if (module_sp) {
741  const DWARFDIE cu_die = dwarf_cu->DIE();
742  if (cu_die) {
743  FileSpec cu_file_spec(cu_die.GetName(), dwarf_cu->GetPathStyle());
744  if (cu_file_spec) {
745  // If we have a full path to the compile unit, we don't need to
746  // resolve the file. This can be expensive e.g. when the source
747  // files are NFS mounted.
748  cu_file_spec.MakeAbsolute(dwarf_cu->GetCompilationDirectory());
749 
750  std::string remapped_file;
751  if (module_sp->RemapSourceFile(cu_file_spec.GetPath(),
752  remapped_file))
753  cu_file_spec.SetFile(remapped_file, FileSpec::Style::native);
754  }
755 
757  cu_die.GetAttributeValueAsUnsigned(DW_AT_language, 0));
758 
759  bool is_optimized = dwarf_cu->GetIsOptimized();
760  cu_sp = std::make_shared<CompileUnit>(
761  module_sp, dwarf_cu, cu_file_spec, dwarf_cu->GetID(),
762  cu_language, is_optimized ? eLazyBoolYes : eLazyBoolNo);
763  if (cu_sp) {
764  // If we just created a compile unit with an invalid file spec,
765  // try and get the first entry in the supports files from the
766  // line table as that should be the compile unit.
767  if (!cu_file_spec) {
768  cu_file_spec = cu_sp->GetSupportFiles().GetFileSpecAtIndex(1);
769  if (cu_file_spec) {
770  (FileSpec &)(*cu_sp) = cu_file_spec;
771  // Also fix the invalid file spec which was copied from the
772  // compile unit.
773  cu_sp->GetSupportFiles().Replace(0, cu_file_spec);
774  }
775  }
776 
777  dwarf_cu->SetUserData(cu_sp.get());
778 
779  // Figure out the compile unit index if we weren't given one
780  if (cu_idx == UINT32_MAX)
781  cu_idx = dwarf_cu->GetID();
782 
783  m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(
784  cu_idx, cu_sp);
785  }
786  }
787  }
788  }
789  }
790  }
791  return cu_sp;
792 }
793 
795  DWARFDebugInfo *info = DebugInfo();
796  if (info)
797  return info->GetNumCompileUnits();
798  return 0;
799 }
800 
802  ASSERT_MODULE_LOCK(this);
803  CompUnitSP cu_sp;
804  DWARFDebugInfo *info = DebugInfo();
805  if (info) {
806  DWARFUnit *dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
807  if (dwarf_cu)
808  cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
809  }
810  return cu_sp;
811 }
812 
814  const DWARFDIE &die) {
815  ASSERT_MODULE_LOCK(this);
816  if (die.IsValid()) {
817  TypeSystem *type_system =
819 
820  if (type_system) {
821  DWARFASTParser *dwarf_ast = type_system->GetDWARFParser();
822  if (dwarf_ast)
823  return dwarf_ast->ParseFunctionFromDWARF(comp_unit, die);
824  }
825  }
826  return nullptr;
827 }
828 
830  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
831  if (debug_map_symfile) {
832  return debug_map_symfile->LinkOSOAddress(addr);
833  }
834  // This is a normal DWARF file, no address fixups need to happen
835  return true;
836 }
838  ASSERT_MODULE_LOCK(this);
839  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
840  if (dwarf_cu)
841  return dwarf_cu->GetLanguageType();
842  else
843  return eLanguageTypeUnknown;
844 }
845 
847  ASSERT_MODULE_LOCK(this);
848  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
849  if (!dwarf_cu)
850  return 0;
851 
852  size_t functions_added = 0;
853  std::vector<DWARFDIE> function_dies;
854  dwarf_cu->AppendDIEsWithTag(DW_TAG_subprogram, function_dies);
855  for (const DWARFDIE &die : function_dies) {
856  if (comp_unit.FindFunctionByUID(die.GetID()))
857  continue;
858  if (ParseFunction(comp_unit, die))
859  ++functions_added;
860  }
861  // FixupTypes();
862  return functions_added;
863 }
864 
866  FileSpecList &support_files) {
867  ASSERT_MODULE_LOCK(this);
868  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
869  if (dwarf_cu) {
870  const DWARFBaseDIE cu_die = dwarf_cu->GetUnitDIEOnly();
871 
872  if (cu_die) {
873  const dw_offset_t stmt_list = cu_die.GetAttributeValueAsUnsigned(
874  DW_AT_stmt_list, DW_INVALID_OFFSET);
875  if (stmt_list != DW_INVALID_OFFSET) {
876  // All file indexes in DWARF are one based and a file of index zero is
877  // supposed to be the compile unit itself.
878  support_files.Append(comp_unit);
880  comp_unit.GetModule(), get_debug_line_data(), stmt_list,
881  support_files, dwarf_cu);
882  }
883  }
884  }
885  return false;
886 }
887 
889  ASSERT_MODULE_LOCK(this);
890  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
891  if (dwarf_cu)
892  return dwarf_cu->GetIsOptimized();
893  return false;
894 }
895 
897  const lldb_private::SymbolContext &sc,
898  std::vector<SourceModule> &imported_modules) {
899  ASSERT_MODULE_LOCK(this);
900  assert(sc.comp_unit);
901  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
902  if (!dwarf_cu)
903  return false;
904  if (!ClangModulesDeclVendor::LanguageSupportsClangModules(
905  sc.comp_unit->GetLanguage()))
906  return false;
908 
909  const DWARFDIE die = dwarf_cu->DIE();
910  if (!die)
911  return false;
912 
913  for (DWARFDIE child_die = die.GetFirstChild(); child_die;
914  child_die = child_die.GetSibling()) {
915  if (child_die.Tag() != DW_TAG_imported_declaration)
916  continue;
917 
918  DWARFDIE module_die = child_die.GetReferencedDIE(DW_AT_import);
919  if (module_die.Tag() != DW_TAG_module)
920  continue;
921 
922  if (const char *name =
923  module_die.GetAttributeValueAsString(DW_AT_name, nullptr)) {
924  SourceModule module;
925  module.path.push_back(ConstString(name));
926 
927  DWARFDIE parent_die = module_die;
928  while ((parent_die = parent_die.GetParent())) {
929  if (parent_die.Tag() != DW_TAG_module)
930  break;
931  if (const char *name =
932  parent_die.GetAttributeValueAsString(DW_AT_name, nullptr))
933  module.path.push_back(ConstString(name));
934  }
935  std::reverse(module.path.begin(), module.path.end());
936  if (const char *include_path = module_die.GetAttributeValueAsString(
937  DW_AT_LLVM_include_path, nullptr))
938  module.search_path = ConstString(include_path);
939  if (const char *sysroot = module_die.GetAttributeValueAsString(
940  DW_AT_LLVM_isysroot, nullptr))
941  module.sysroot = ConstString(sysroot);
942  imported_modules.push_back(module);
943  }
944  }
945  return true;
946 }
947 
950  std::unique_ptr<LineSequence> sequence_up;
952 };
953 
954 // ParseStatementTableCallback
956  const DWARFDebugLine::State &state,
957  void *userData) {
959  // Just started parsing the line table
960  } else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) {
961  // Done parsing line table, nothing to do for the cleanup
962  } else {
965  LineTable *line_table = info->line_table;
966 
967  // If this is our first time here, we need to create a sequence container.
968  if (!info->sequence_up) {
969  info->sequence_up.reset(line_table->CreateLineSequenceContainer());
970  assert(info->sequence_up.get());
971  }
972  line_table->AppendLineEntryToSequence(
973  info->sequence_up.get(), state.address & info->addr_mask, state.line,
974  state.column, state.file, state.is_stmt, state.basic_block,
975  state.prologue_end, state.epilogue_begin, state.end_sequence);
976  if (state.end_sequence) {
977  // First, put the current sequence into the line table.
978  line_table->InsertSequence(info->sequence_up.get());
979  // Then, empty it to prepare for the next sequence.
980  info->sequence_up->Clear();
981  }
982  }
983 }
984 
986  ASSERT_MODULE_LOCK(this);
987  if (comp_unit.GetLineTable() != NULL)
988  return true;
989 
990  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
991  if (dwarf_cu) {
992  const DWARFBaseDIE dwarf_cu_die = dwarf_cu->GetUnitDIEOnly();
993  if (dwarf_cu_die) {
994  const dw_offset_t cu_line_offset =
995  dwarf_cu_die.GetAttributeValueAsUnsigned(DW_AT_stmt_list,
997  if (cu_line_offset != DW_INVALID_OFFSET) {
998  std::unique_ptr<LineTable> line_table_up(new LineTable(&comp_unit));
999  if (line_table_up) {
1001  info.line_table = line_table_up.get();
1002 
1003  /*
1004  * MIPS:
1005  * The SymbolContext may not have a valid target, thus we may not be
1006  * able
1007  * to call Address::GetOpcodeLoadAddress() which would clear the bit
1008  * #0
1009  * for MIPS. Use ArchSpec to clear the bit #0.
1010  */
1011  switch (GetObjectFile()->GetArchitecture().GetMachine()) {
1012  case llvm::Triple::mips:
1013  case llvm::Triple::mipsel:
1014  case llvm::Triple::mips64:
1015  case llvm::Triple::mips64el:
1016  info.addr_mask = ~((lldb::addr_t)1);
1017  break;
1018  default:
1019  info.addr_mask = ~((lldb::addr_t)0);
1020  break;
1021  }
1022 
1023  lldb::offset_t offset = cu_line_offset;
1026  &info, dwarf_cu);
1027  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
1028  if (debug_map_symfile) {
1029  // We have an object file that has a line table with addresses that
1030  // are not linked. We need to link the line table and convert the
1031  // addresses that are relative to the .o file into addresses for
1032  // the main executable.
1033  comp_unit.SetLineTable(
1034  debug_map_symfile->LinkOSOLineTable(this, line_table_up.get()));
1035  } else {
1036  comp_unit.SetLineTable(line_table_up.release());
1037  return true;
1038  }
1039  }
1040  }
1041  }
1042  }
1043  return false;
1044 }
1045 
1048  auto iter = m_debug_macros_map.find(*offset);
1049  if (iter != m_debug_macros_map.end())
1050  return iter->second;
1051 
1052  const DWARFDataExtractor &debug_macro_data = get_debug_macro_data();
1053  if (debug_macro_data.GetByteSize() == 0)
1054  return DebugMacrosSP();
1055 
1057  m_debug_macros_map[*offset] = debug_macros_sp;
1058 
1059  const DWARFDebugMacroHeader &header =
1060  DWARFDebugMacroHeader::ParseHeader(debug_macro_data, offset);
1062  header.OffsetIs64Bit(), offset, this,
1063  debug_macros_sp);
1064 
1065  return debug_macros_sp;
1066 }
1067 
1069  ASSERT_MODULE_LOCK(this);
1070 
1071  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
1072  if (dwarf_cu == nullptr)
1073  return false;
1074 
1075  const DWARFBaseDIE dwarf_cu_die = dwarf_cu->GetUnitDIEOnly();
1076  if (!dwarf_cu_die)
1077  return false;
1078 
1079  lldb::offset_t sect_offset =
1080  dwarf_cu_die.GetAttributeValueAsUnsigned(DW_AT_macros, DW_INVALID_OFFSET);
1081  if (sect_offset == DW_INVALID_OFFSET)
1082  sect_offset = dwarf_cu_die.GetAttributeValueAsUnsigned(DW_AT_GNU_macros,
1084  if (sect_offset == DW_INVALID_OFFSET)
1085  return false;
1086 
1087  comp_unit.SetDebugMacros(ParseDebugMacros(&sect_offset));
1088 
1089  return true;
1090 }
1091 
1093  lldb_private::CompileUnit &comp_unit, Block *parent_block,
1094  const DWARFDIE &orig_die, addr_t subprogram_low_pc, uint32_t depth) {
1095  size_t blocks_added = 0;
1096  DWARFDIE die = orig_die;
1097  while (die) {
1098  dw_tag_t tag = die.Tag();
1099 
1100  switch (tag) {
1101  case DW_TAG_inlined_subroutine:
1102  case DW_TAG_subprogram:
1103  case DW_TAG_lexical_block: {
1104  Block *block = NULL;
1105  if (tag == DW_TAG_subprogram) {
1106  // Skip any DW_TAG_subprogram DIEs that are inside of a normal or
1107  // inlined functions. These will be parsed on their own as separate
1108  // entities.
1109 
1110  if (depth > 0)
1111  break;
1112 
1113  block = parent_block;
1114  } else {
1115  BlockSP block_sp(new Block(die.GetID()));
1116  parent_block->AddChild(block_sp);
1117  block = block_sp.get();
1118  }
1119  DWARFRangeList ranges;
1120  const char *name = NULL;
1121  const char *mangled_name = NULL;
1122 
1123  int decl_file = 0;
1124  int decl_line = 0;
1125  int decl_column = 0;
1126  int call_file = 0;
1127  int call_line = 0;
1128  int call_column = 0;
1129  if (die.GetDIENamesAndRanges(name, mangled_name, ranges, decl_file,
1130  decl_line, decl_column, call_file, call_line,
1131  call_column, nullptr)) {
1132  if (tag == DW_TAG_subprogram) {
1133  assert(subprogram_low_pc == LLDB_INVALID_ADDRESS);
1134  subprogram_low_pc = ranges.GetMinRangeBase(0);
1135  } else if (tag == DW_TAG_inlined_subroutine) {
1136  // We get called here for inlined subroutines in two ways. The first
1137  // time is when we are making the Function object for this inlined
1138  // concrete instance. Since we're creating a top level block at
1139  // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we
1140  // need to adjust the containing address. The second time is when we
1141  // are parsing the blocks inside the function that contains the
1142  // inlined concrete instance. Since these will be blocks inside the
1143  // containing "real" function the offset will be for that function.
1144  if (subprogram_low_pc == LLDB_INVALID_ADDRESS) {
1145  subprogram_low_pc = ranges.GetMinRangeBase(0);
1146  }
1147  }
1148 
1149  const size_t num_ranges = ranges.GetSize();
1150  for (size_t i = 0; i < num_ranges; ++i) {
1151  const DWARFRangeList::Entry &range = ranges.GetEntryRef(i);
1152  const addr_t range_base = range.GetRangeBase();
1153  if (range_base >= subprogram_low_pc)
1154  block->AddRange(Block::Range(range_base - subprogram_low_pc,
1155  range.GetByteSize()));
1156  else {
1157  GetObjectFile()->GetModule()->ReportError(
1158  "0x%8.8" PRIx64 ": adding range [0x%" PRIx64 "-0x%" PRIx64
1159  ") which has a base that is less than the function's low PC "
1160  "0x%" PRIx64 ". Please file a bug and attach the file at the "
1161  "start of this error message",
1162  block->GetID(), range_base, range.GetRangeEnd(),
1163  subprogram_low_pc);
1164  }
1165  }
1166  block->FinalizeRanges();
1167 
1168  if (tag != DW_TAG_subprogram &&
1169  (name != NULL || mangled_name != NULL)) {
1170  std::unique_ptr<Declaration> decl_up;
1171  if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1172  decl_up.reset(new Declaration(
1173  comp_unit.GetSupportFiles().GetFileSpecAtIndex(decl_file),
1174  decl_line, decl_column));
1175 
1176  std::unique_ptr<Declaration> call_up;
1177  if (call_file != 0 || call_line != 0 || call_column != 0)
1178  call_up.reset(new Declaration(
1179  comp_unit.GetSupportFiles().GetFileSpecAtIndex(call_file),
1180  call_line, call_column));
1181 
1182  block->SetInlinedFunctionInfo(name, mangled_name, decl_up.get(),
1183  call_up.get());
1184  }
1185 
1186  ++blocks_added;
1187 
1188  if (die.HasChildren()) {
1189  blocks_added +=
1190  ParseBlocksRecursive(comp_unit, block, die.GetFirstChild(),
1191  subprogram_low_pc, depth + 1);
1192  }
1193  }
1194  } break;
1195  default:
1196  break;
1197  }
1198 
1199  // Only parse siblings of the block if we are not at depth zero. A depth of
1200  // zero indicates we are currently parsing the top level DW_TAG_subprogram
1201  // DIE
1202 
1203  if (depth == 0)
1204  die.Clear();
1205  else
1206  die = die.GetSibling();
1207  }
1208  return blocks_added;
1209 }
1210 
1212  if (parent_die) {
1213  for (DWARFDIE die = parent_die.GetFirstChild(); die;
1214  die = die.GetSibling()) {
1215  dw_tag_t tag = die.Tag();
1216  bool check_virtuality = false;
1217  switch (tag) {
1218  case DW_TAG_inheritance:
1219  case DW_TAG_subprogram:
1220  check_virtuality = true;
1221  break;
1222  default:
1223  break;
1224  }
1225  if (check_virtuality) {
1226  if (die.GetAttributeValueAsUnsigned(DW_AT_virtuality, 0) != 0)
1227  return true;
1228  }
1229  }
1230  }
1231  return false;
1232 }
1233 
1235  TypeSystem *type_system = decl_ctx.GetTypeSystem();
1236  DWARFASTParser *ast_parser = type_system->GetDWARFParser();
1237  std::vector<DWARFDIE> decl_ctx_die_list =
1238  ast_parser->GetDIEForDeclContext(decl_ctx);
1239 
1240  for (DWARFDIE decl_ctx_die : decl_ctx_die_list)
1241  for (DWARFDIE decl = decl_ctx_die.GetFirstChild(); decl;
1242  decl = decl.GetSibling())
1243  ast_parser->GetDeclForUIDFromDWARF(decl);
1244 }
1245 
1247  // This method can be called without going through the symbol vendor so we
1248  // need to lock the module.
1249  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1250  // Anytime we get a "lldb::user_id_t" from an lldb_private::SymbolFile API we
1251  // must make sure we use the correct DWARF file when resolving things. On
1252  // MacOSX, when using SymbolFileDWARFDebugMap, we will use multiple
1253  // SymbolFileDWARF classes, one for each .o file. We can often end up with
1254  // references to other DWARF objects and we must be ready to receive a
1255  // "lldb::user_id_t" that specifies a DIE from another SymbolFileDWARF
1256  // instance.
1258  if (debug_map)
1259  return debug_map->GetSymbolFileByOSOIndex(
1260  debug_map->GetOSOIndexFromUserID(uid));
1261  return this;
1262 }
1263 
1264 DWARFDIE
1266  // This method can be called without going through the symbol vendor so we
1267  // need to lock the module.
1268  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1269  // Anytime we get a "lldb::user_id_t" from an lldb_private::SymbolFile API we
1270  // must make sure we use the correct DWARF file when resolving things. On
1271  // MacOSX, when using SymbolFileDWARFDebugMap, we will use multiple
1272  // SymbolFileDWARF classes, one for each .o file. We can often end up with
1273  // references to other DWARF objects and we must be ready to receive a
1274  // "lldb::user_id_t" that specifies a DIE from another SymbolFileDWARF
1275  // instance.
1276  SymbolFileDWARF *dwarf = GetDWARFForUID(uid);
1277  if (dwarf)
1278  return dwarf->GetDIE(DIERef(uid, dwarf));
1279  return DWARFDIE();
1280 }
1281 
1283  // This method can be called without going through the symbol vendor so we
1284  // need to lock the module.
1285  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1286  // Anytime we have a lldb::user_id_t, we must get the DIE by calling
1287  // SymbolFileDWARF::GetDIEFromUID(). See comments inside the
1288  // SymbolFileDWARF::GetDIEFromUID() for details.
1289  DWARFDIE die = GetDIEFromUID(type_uid);
1290  if (die)
1291  return die.GetDecl();
1292  return CompilerDecl();
1293 }
1294 
1297  // This method can be called without going through the symbol vendor so we
1298  // need to lock the module.
1299  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1300  // Anytime we have a lldb::user_id_t, we must get the DIE by calling
1301  // SymbolFileDWARF::GetDIEFromUID(). See comments inside the
1302  // SymbolFileDWARF::GetDIEFromUID() for details.
1303  DWARFDIE die = GetDIEFromUID(type_uid);
1304  if (die)
1305  return die.GetDeclContext();
1306  return CompilerDeclContext();
1307 }
1308 
1311  // This method can be called without going through the symbol vendor so we
1312  // need to lock the module.
1313  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1314  // Anytime we have a lldb::user_id_t, we must get the DIE by calling
1315  // SymbolFileDWARF::GetDIEFromUID(). See comments inside the
1316  // SymbolFileDWARF::GetDIEFromUID() for details.
1317  DWARFDIE die = GetDIEFromUID(type_uid);
1318  if (die)
1319  return die.GetContainingDeclContext();
1320  return CompilerDeclContext();
1321 }
1322 
1324  // This method can be called without going through the symbol vendor so we
1325  // need to lock the module.
1326  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1327  // Anytime we have a lldb::user_id_t, we must get the DIE by calling
1328  // SymbolFileDWARF::GetDIEFromUID(). See comments inside the
1329  // SymbolFileDWARF::GetDIEFromUID() for details.
1330  DWARFDIE type_die = GetDIEFromUID(type_uid);
1331  if (type_die)
1332  return type_die.ResolveType();
1333  else
1334  return nullptr;
1335 }
1336 
1337 llvm::Optional<SymbolFile::ArrayInfo>
1339  lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) {
1340  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1341  DWARFDIE type_die = GetDIEFromUID(type_uid);
1342  if (type_die)
1343  return DWARFASTParser::ParseChildArrayInfo(type_die, exe_ctx);
1344  else
1345  return llvm::None;
1346 }
1347 
1349  return ResolveType(GetDIE(die_ref), true);
1350 }
1351 
1353  bool assert_not_being_parsed) {
1354  if (die) {
1355  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
1356  if (log)
1357  GetObjectFile()->GetModule()->LogMessage(
1358  log, "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
1359  die.GetOffset(), die.GetTagAsCString(), die.GetName());
1360 
1361  // We might be coming in in the middle of a type tree (a class within a
1362  // class, an enum within a class), so parse any needed parent DIEs before
1363  // we get to this one...
1364  DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(die);
1365  if (decl_ctx_die) {
1366  if (log) {
1367  switch (decl_ctx_die.Tag()) {
1368  case DW_TAG_structure_type:
1369  case DW_TAG_union_type:
1370  case DW_TAG_class_type: {
1371  // Get the type, which could be a forward declaration
1372  if (log)
1373  GetObjectFile()->GetModule()->LogMessage(
1374  log, "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' "
1375  "resolve parent forward type for 0x%8.8x",
1376  die.GetOffset(), die.GetTagAsCString(), die.GetName(),
1377  decl_ctx_die.GetOffset());
1378  } break;
1379 
1380  default:
1381  break;
1382  }
1383  }
1384  }
1385  return ResolveType(die);
1386  }
1387  return NULL;
1388 }
1389 
1390 // This function is used when SymbolFileDWARFDebugMap owns a bunch of
1391 // SymbolFileDWARF objects to detect if this DWARF file is the one that can
1392 // resolve a compiler_type.
1394  const CompilerType &compiler_type) {
1395  CompilerType compiler_type_no_qualifiers =
1396  ClangUtil::RemoveFastQualifiers(compiler_type);
1397  if (GetForwardDeclClangTypeToDie().count(
1398  compiler_type_no_qualifiers.GetOpaqueQualType())) {
1399  return true;
1400  }
1401  TypeSystem *type_system = compiler_type.GetTypeSystem();
1402 
1403  ClangASTContext *clang_type_system =
1404  llvm::dyn_cast_or_null<ClangASTContext>(type_system);
1405  if (!clang_type_system)
1406  return false;
1407  DWARFASTParserClang *ast_parser =
1408  static_cast<DWARFASTParserClang *>(clang_type_system->GetDWARFParser());
1409  return ast_parser->GetClangASTImporter().CanImport(compiler_type);
1410 }
1411 
1413  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1414 
1415  ClangASTContext *clang_type_system =
1416  llvm::dyn_cast_or_null<ClangASTContext>(compiler_type.GetTypeSystem());
1417  if (clang_type_system) {
1418  DWARFASTParserClang *ast_parser =
1419  static_cast<DWARFASTParserClang *>(clang_type_system->GetDWARFParser());
1420  if (ast_parser &&
1421  ast_parser->GetClangASTImporter().CanImport(compiler_type))
1422  return ast_parser->GetClangASTImporter().CompleteType(compiler_type);
1423  }
1424 
1425  // We have a struct/union/class/enum that needs to be fully resolved.
1426  CompilerType compiler_type_no_qualifiers =
1427  ClangUtil::RemoveFastQualifiers(compiler_type);
1428  auto die_it = GetForwardDeclClangTypeToDie().find(
1429  compiler_type_no_qualifiers.GetOpaqueQualType());
1430  if (die_it == GetForwardDeclClangTypeToDie().end()) {
1431  // We have already resolved this type...
1432  return true;
1433  }
1434 
1435  DWARFDIE dwarf_die = GetDIE(die_it->getSecond());
1436  if (dwarf_die) {
1437  // Once we start resolving this type, remove it from the forward
1438  // declaration map in case anyone child members or other types require this
1439  // type to get resolved. The type will get resolved when all of the calls
1440  // to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition are done.
1441  GetForwardDeclClangTypeToDie().erase(die_it);
1442 
1443  Type *type = GetDIEToType().lookup(dwarf_die.GetDIE());
1444 
1445  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO |
1447  if (log)
1448  GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
1449  log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
1450  dwarf_die.GetID(), dwarf_die.GetTagAsCString(),
1451  type->GetName().AsCString());
1452  assert(compiler_type);
1453  DWARFASTParser *dwarf_ast = dwarf_die.GetDWARFParser();
1454  if (dwarf_ast)
1455  return dwarf_ast->CompleteTypeFromDWARF(dwarf_die, type, compiler_type);
1456  }
1457  return false;
1458 }
1459 
1461  bool assert_not_being_parsed,
1462  bool resolve_function_context) {
1463  if (die) {
1464  Type *type = GetTypeForDIE(die, resolve_function_context).get();
1465 
1466  if (assert_not_being_parsed) {
1467  if (type != DIE_IS_BEING_PARSED)
1468  return type;
1469 
1470  GetObjectFile()->GetModule()->ReportError(
1471  "Parsing a die that is being parsed die: 0x%8.8x: %s %s",
1472  die.GetOffset(), die.GetTagAsCString(), die.GetName());
1473 
1474  } else
1475  return type;
1476  }
1477  return nullptr;
1478 }
1479 
1480 CompileUnit *
1482  uint32_t cu_idx) {
1483  // Check if the symbol vendor already knows about this compile unit?
1484  if (dwarf_cu->GetUserData() == NULL) {
1485  // The symbol vendor doesn't know about this compile unit, we need to parse
1486  // and add it to the symbol vendor object.
1487  return ParseCompileUnit(dwarf_cu, cu_idx).get();
1488  }
1489  return (CompileUnit *)dwarf_cu->GetUserData();
1490 }
1491 
1493  DIEArray &method_die_offsets) {
1494  method_die_offsets.clear();
1495  m_index->GetObjCMethods(class_name, method_die_offsets);
1496  return method_die_offsets.size();
1497 }
1498 
1500  sc.Clear(false);
1501 
1502  if (die) {
1503  // Check if the symbol vendor already knows about this compile unit?
1505 
1506  sc.function = sc.comp_unit->FindFunctionByUID(die.GetID()).get();
1507  if (sc.function == NULL)
1508  sc.function = ParseFunction(*sc.comp_unit, die);
1509 
1510  if (sc.function) {
1512  return true;
1513  }
1514  }
1515 
1516  return false;
1517 }
1518 
1521  const auto &pos = m_external_type_modules.find(name);
1522  if (pos != m_external_type_modules.end())
1523  return pos->second;
1524  else
1525  return lldb::ModuleSP();
1526 }
1527 
1528 DWARFDIE
1530  DWARFDebugInfo *debug_info = DebugInfo();
1531  if (debug_info)
1532  return debug_info->GetDIE(die_ref);
1533  else
1534  return DWARFDIE();
1535 }
1536 
1537 std::unique_ptr<SymbolFileDWARFDwo>
1539  DWARFUnit &dwarf_cu, const DWARFDebugInfoEntry &cu_die) {
1540  // If we are using a dSYM file, we never want the standard DWO files since
1541  // the -gmodules support uses the same DWO machanism to specify full debug
1542  // info files for modules.
1543  if (GetDebugMapSymfile())
1544  return nullptr;
1545 
1546  const char *dwo_name = cu_die.GetAttributeValueAsString(
1547  this, &dwarf_cu, DW_AT_GNU_dwo_name, nullptr);
1548  if (!dwo_name)
1549  return nullptr;
1550 
1551  SymbolFileDWARFDwp *dwp_symfile = GetDwpSymbolFile();
1552  if (dwp_symfile) {
1553  uint64_t dwo_id = cu_die.GetAttributeValueAsUnsigned(this, &dwarf_cu,
1554  DW_AT_GNU_dwo_id, 0);
1555  std::unique_ptr<SymbolFileDWARFDwo> dwo_symfile =
1556  dwp_symfile->GetSymbolFileForDwoId(&dwarf_cu, dwo_id);
1557  if (dwo_symfile)
1558  return dwo_symfile;
1559  }
1560 
1561  FileSpec dwo_file(dwo_name);
1562  FileSystem::Instance().Resolve(dwo_file);
1563  if (dwo_file.IsRelative()) {
1564  const char *comp_dir = cu_die.GetAttributeValueAsString(
1565  this, &dwarf_cu, DW_AT_comp_dir, nullptr);
1566  if (!comp_dir)
1567  return nullptr;
1568 
1569  dwo_file.SetFile(comp_dir, FileSpec::Style::native);
1570  FileSystem::Instance().Resolve(dwo_file);
1571  dwo_file.AppendPathComponent(dwo_name);
1572  }
1573 
1574  if (!FileSystem::Instance().Exists(dwo_file))
1575  return nullptr;
1576 
1577  const lldb::offset_t file_offset = 0;
1578  DataBufferSP dwo_file_data_sp;
1579  lldb::offset_t dwo_file_data_offset = 0;
1580  ObjectFileSP dwo_obj_file = ObjectFile::FindPlugin(
1581  GetObjectFile()->GetModule(), &dwo_file, file_offset,
1582  FileSystem::Instance().GetByteSize(dwo_file), dwo_file_data_sp,
1583  dwo_file_data_offset);
1584  if (dwo_obj_file == nullptr)
1585  return nullptr;
1586 
1587  return llvm::make_unique<SymbolFileDWARFDwo>(dwo_obj_file, &dwarf_cu);
1588 }
1589 
1592  return;
1594 
1595  DWARFDebugInfo *debug_info = DebugInfo();
1596 
1597  const uint32_t num_compile_units = GetNumCompileUnits();
1598  for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
1599  DWARFUnit *dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
1600 
1601  const DWARFBaseDIE die = dwarf_cu->GetUnitDIEOnly();
1602  if (die && !die.HasChildren()) {
1603  const char *name = die.GetAttributeValueAsString(DW_AT_name, nullptr);
1604 
1605  if (name) {
1606  ConstString const_name(name);
1607  if (m_external_type_modules.find(const_name) ==
1608  m_external_type_modules.end()) {
1609  ModuleSP module_sp;
1610  const char *dwo_path =
1611  die.GetAttributeValueAsString(DW_AT_GNU_dwo_name, nullptr);
1612  if (dwo_path) {
1613  ModuleSpec dwo_module_spec;
1614  dwo_module_spec.GetFileSpec().SetFile(dwo_path,
1615  FileSpec::Style::native);
1616  if (dwo_module_spec.GetFileSpec().IsRelative()) {
1617  const char *comp_dir =
1618  die.GetAttributeValueAsString(DW_AT_comp_dir, nullptr);
1619  if (comp_dir) {
1620  dwo_module_spec.GetFileSpec().SetFile(comp_dir,
1621  FileSpec::Style::native);
1622  FileSystem::Instance().Resolve(dwo_module_spec.GetFileSpec());
1623  dwo_module_spec.GetFileSpec().AppendPathComponent(dwo_path);
1624  }
1625  }
1626  dwo_module_spec.GetArchitecture() =
1627  m_obj_file->GetModule()->GetArchitecture();
1628 
1629  // When LLDB loads "external" modules it looks at the presence of
1630  // DW_AT_GNU_dwo_name. However, when the already created module
1631  // (corresponding to .dwo itself) is being processed, it will see
1632  // the presence of DW_AT_GNU_dwo_name (which contains the name of
1633  // dwo file) and will try to call ModuleList::GetSharedModule
1634  // again. In some cases (i.e. for empty files) Clang 4.0 generates
1635  // a *.dwo file which has DW_AT_GNU_dwo_name, but no
1636  // DW_AT_comp_dir. In this case the method
1637  // ModuleList::GetSharedModule will fail and the warning will be
1638  // printed. However, as one can notice in this case we don't
1639  // actually need to try to load the already loaded module
1640  // (corresponding to .dwo) so we simply skip it.
1641  if (m_obj_file->GetFileSpec().GetFileNameExtension() == ".dwo" &&
1642  llvm::StringRef(m_obj_file->GetFileSpec().GetPath())
1643  .endswith(dwo_module_spec.GetFileSpec().GetPath())) {
1644  continue;
1645  }
1646 
1647  Status error = ModuleList::GetSharedModule(
1648  dwo_module_spec, module_sp, NULL, NULL, NULL);
1649  if (!module_sp) {
1650  GetObjectFile()->GetModule()->ReportWarning(
1651  "0x%8.8x: unable to locate module needed for external types: "
1652  "%s\nerror: %s\nDebugging will be degraded due to missing "
1653  "types. Rebuilding your project will regenerate the needed "
1654  "module files.",
1655  die.GetOffset(),
1656  dwo_module_spec.GetFileSpec().GetPath().c_str(),
1657  error.AsCString("unknown error"));
1658  }
1659  }
1660  m_external_type_modules[const_name] = module_sp;
1661  }
1662  }
1663  }
1664  }
1665 }
1666 
1668  if (!m_global_aranges_up) {
1670 
1671  ModuleSP module_sp = GetObjectFile()->GetModule();
1672  if (module_sp) {
1673  const size_t num_cus = module_sp->GetNumCompileUnits();
1674  for (size_t i = 0; i < num_cus; ++i) {
1675  CompUnitSP cu_sp = module_sp->GetCompileUnitAtIndex(i);
1676  if (cu_sp) {
1677  VariableListSP globals_sp = cu_sp->GetVariableList(true);
1678  if (globals_sp) {
1679  const size_t num_globals = globals_sp->GetSize();
1680  for (size_t g = 0; g < num_globals; ++g) {
1681  VariableSP var_sp = globals_sp->GetVariableAtIndex(g);
1682  if (var_sp && !var_sp->GetLocationIsConstantValueData()) {
1683  const DWARFExpression &location = var_sp->LocationExpression();
1684  Value location_result;
1685  Status error;
1686  if (location.Evaluate(nullptr, LLDB_INVALID_ADDRESS, nullptr,
1687  nullptr, location_result, &error)) {
1688  if (location_result.GetValueType() ==
1689  Value::eValueTypeFileAddress) {
1690  lldb::addr_t file_addr =
1691  location_result.GetScalar().ULongLong();
1692  lldb::addr_t byte_size = 1;
1693  if (var_sp->GetType())
1694  byte_size =
1695  var_sp->GetType()->GetByteSize().getValueOr(0);
1697  file_addr, byte_size, var_sp.get()));
1698  }
1699  }
1700  }
1701  }
1702  }
1703  }
1704  }
1705  }
1706  m_global_aranges_up->Sort();
1707  }
1708  return *m_global_aranges_up;
1709 }
1710 
1712  SymbolContextItem resolve_scope,
1713  SymbolContext &sc) {
1714  static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
1715  Timer scoped_timer(func_cat,
1716  "SymbolFileDWARF::"
1717  "ResolveSymbolContext (so_addr = { "
1718  "section = %p, offset = 0x%" PRIx64
1719  " }, resolve_scope = 0x%8.8x)",
1720  static_cast<void *>(so_addr.GetSection().get()),
1721  so_addr.GetOffset(), resolve_scope);
1722  uint32_t resolved = 0;
1723  if (resolve_scope &
1724  (eSymbolContextCompUnit | eSymbolContextFunction | eSymbolContextBlock |
1725  eSymbolContextLineEntry | eSymbolContextVariable)) {
1726  lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
1727 
1728  DWARFDebugInfo *debug_info = DebugInfo();
1729  if (debug_info) {
1730  llvm::Expected<DWARFDebugAranges &> aranges =
1731  debug_info->GetCompileUnitAranges();
1732  if (!aranges) {
1733  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO);
1734  LLDB_LOG_ERROR(log, aranges.takeError(),
1735  "SymbolFileDWARF::ResolveSymbolContext failed to get cu "
1736  "aranges. {0}");
1737  return 0;
1738  }
1739 
1740  const dw_offset_t cu_offset = aranges->FindAddress(file_vm_addr);
1741  if (cu_offset == DW_INVALID_OFFSET) {
1742  // Global variables are not in the compile unit address ranges. The
1743  // only way to currently find global variables is to iterate over the
1744  // .debug_pubnames or the __apple_names table and find all items in
1745  // there that point to DW_TAG_variable DIEs and then find the address
1746  // that matches.
1747  if (resolve_scope & eSymbolContextVariable) {
1749  const GlobalVariableMap::Entry *entry =
1750  map.FindEntryThatContains(file_vm_addr);
1751  if (entry && entry->data) {
1752  Variable *variable = entry->data;
1753  SymbolContextScope *scc = variable->GetSymbolContextScope();
1754  if (scc) {
1755  scc->CalculateSymbolContext(&sc);
1756  sc.variable = variable;
1757  }
1758  return sc.GetResolvedMask();
1759  }
1760  }
1761  } else {
1762  uint32_t cu_idx = DW_INVALID_INDEX;
1763  DWARFUnit *dwarf_cu =
1764  debug_info->GetCompileUnitAtOffset(cu_offset, &cu_idx);
1765  if (dwarf_cu) {
1766  sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
1767  if (sc.comp_unit) {
1768  resolved |= eSymbolContextCompUnit;
1769 
1770  bool force_check_line_table = false;
1771  if (resolve_scope &
1772  (eSymbolContextFunction | eSymbolContextBlock)) {
1773  DWARFDIE function_die = dwarf_cu->LookupAddress(file_vm_addr);
1774  DWARFDIE block_die;
1775  if (function_die) {
1776  sc.function =
1777  sc.comp_unit->FindFunctionByUID(function_die.GetID()).get();
1778  if (sc.function == NULL)
1779  sc.function = ParseFunction(*sc.comp_unit, function_die);
1780 
1781  if (sc.function && (resolve_scope & eSymbolContextBlock))
1782  block_die = function_die.LookupDeepestBlock(file_vm_addr);
1783  } else {
1784  // We might have had a compile unit that had discontiguous
1785  // address ranges where the gaps are symbols that don't have
1786  // any debug info. Discontiguous compile unit address ranges
1787  // should only happen when there aren't other functions from
1788  // other compile units in these gaps. This helps keep the size
1789  // of the aranges down.
1790  force_check_line_table = true;
1791  }
1792 
1793  if (sc.function != NULL) {
1794  resolved |= eSymbolContextFunction;
1795 
1796  if (resolve_scope & eSymbolContextBlock) {
1797  Block &block = sc.function->GetBlock(true);
1798 
1799  if (block_die)
1800  sc.block = block.FindBlockByID(block_die.GetID());
1801  else
1802  sc.block = block.FindBlockByID(function_die.GetID());
1803  if (sc.block)
1804  resolved |= eSymbolContextBlock;
1805  }
1806  }
1807  }
1808 
1809  if ((resolve_scope & eSymbolContextLineEntry) ||
1810  force_check_line_table) {
1811  LineTable *line_table = sc.comp_unit->GetLineTable();
1812  if (line_table != NULL) {
1813  // And address that makes it into this function should be in
1814  // terms of this debug file if there is no debug map, or it
1815  // will be an address in the .o file which needs to be fixed up
1816  // to be in terms of the debug map executable. Either way,
1817  // calling FixupAddress() will work for us.
1818  Address exe_so_addr(so_addr);
1819  if (FixupAddress(exe_so_addr)) {
1820  if (line_table->FindLineEntryByAddress(exe_so_addr,
1821  sc.line_entry)) {
1822  resolved |= eSymbolContextLineEntry;
1823  }
1824  }
1825  }
1826  }
1827 
1828  if (force_check_line_table &&
1829  !(resolved & eSymbolContextLineEntry)) {
1830  // We might have had a compile unit that had discontiguous
1831  // address ranges where the gaps are symbols that don't have any
1832  // debug info. Discontiguous compile unit address ranges should
1833  // only happen when there aren't other functions from other
1834  // compile units in these gaps. This helps keep the size of the
1835  // aranges down.
1836  sc.comp_unit = NULL;
1837  resolved &= ~eSymbolContextCompUnit;
1838  }
1839  } else {
1840  GetObjectFile()->GetModule()->ReportWarning(
1841  "0x%8.8x: compile unit %u failed to create a valid "
1842  "lldb_private::CompileUnit class.",
1843  cu_offset, cu_idx);
1844  }
1845  }
1846  }
1847  }
1848  }
1849  return resolved;
1850 }
1851 
1853  uint32_t line,
1854  bool check_inlines,
1855  SymbolContextItem resolve_scope,
1856  SymbolContextList &sc_list) {
1857  const uint32_t prev_size = sc_list.GetSize();
1858  if (resolve_scope & eSymbolContextCompUnit) {
1859  DWARFDebugInfo *debug_info = DebugInfo();
1860  if (debug_info) {
1861  uint32_t cu_idx;
1862  DWARFUnit *dwarf_cu = NULL;
1863 
1864  for (cu_idx = 0;
1865  (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL;
1866  ++cu_idx) {
1867  CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
1868  const bool full_match = (bool)file_spec.GetDirectory();
1869  bool file_spec_matches_cu_file_spec =
1870  dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match);
1871  if (check_inlines || file_spec_matches_cu_file_spec) {
1873  sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
1874  if (sc.comp_unit) {
1875  uint32_t file_idx = UINT32_MAX;
1876 
1877  // If we are looking for inline functions only and we don't find it
1878  // in the support files, we are done.
1879  if (check_inlines) {
1880  file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex(
1881  1, file_spec, true);
1882  if (file_idx == UINT32_MAX)
1883  continue;
1884  }
1885 
1886  if (line != 0) {
1887  LineTable *line_table = sc.comp_unit->GetLineTable();
1888 
1889  if (line_table != NULL && line != 0) {
1890  // We will have already looked up the file index if we are
1891  // searching for inline entries.
1892  if (!check_inlines)
1893  file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex(
1894  1, file_spec, true);
1895 
1896  if (file_idx != UINT32_MAX) {
1897  uint32_t found_line;
1898  uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex(
1899  0, file_idx, line, false, &sc.line_entry);
1900  found_line = sc.line_entry.line;
1901 
1902  while (line_idx != UINT32_MAX) {
1903  sc.function = NULL;
1904  sc.block = NULL;
1905  if (resolve_scope &
1906  (eSymbolContextFunction | eSymbolContextBlock)) {
1907  const lldb::addr_t file_vm_addr =
1909  if (file_vm_addr != LLDB_INVALID_ADDRESS) {
1910  DWARFDIE function_die =
1911  dwarf_cu->LookupAddress(file_vm_addr);
1912  DWARFDIE block_die;
1913  if (function_die) {
1914  sc.function =
1915  sc.comp_unit
1916  ->FindFunctionByUID(function_die.GetID())
1917  .get();
1918  if (sc.function == NULL)
1919  sc.function =
1920  ParseFunction(*sc.comp_unit, function_die);
1921 
1922  if (sc.function &&
1923  (resolve_scope & eSymbolContextBlock))
1924  block_die =
1925  function_die.LookupDeepestBlock(file_vm_addr);
1926  }
1927 
1928  if (sc.function != NULL) {
1929  Block &block = sc.function->GetBlock(true);
1930 
1931  if (block_die)
1932  sc.block = block.FindBlockByID(block_die.GetID());
1933  else if (function_die)
1934  sc.block =
1935  block.FindBlockByID(function_die.GetID());
1936  }
1937  }
1938  }
1939 
1940  sc_list.Append(sc);
1941  line_idx = line_table->FindLineEntryIndexByFileIndex(
1942  line_idx + 1, file_idx, found_line, true,
1943  &sc.line_entry);
1944  }
1945  }
1946  } else if (file_spec_matches_cu_file_spec && !check_inlines) {
1947  // only append the context if we aren't looking for inline call
1948  // sites by file and line and if the file spec matches that of
1949  // the compile unit
1950  sc_list.Append(sc);
1951  }
1952  } else if (file_spec_matches_cu_file_spec && !check_inlines) {
1953  // only append the context if we aren't looking for inline call
1954  // sites by file and line and if the file spec matches that of
1955  // the compile unit
1956  sc_list.Append(sc);
1957  }
1958 
1959  if (!check_inlines)
1960  break;
1961  }
1962  }
1963  }
1964  }
1965  }
1966  return sc_list.GetSize() - prev_size;
1967 }
1968 
1970  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
1971  m_index->Preload();
1972 }
1973 
1974 std::recursive_mutex &SymbolFileDWARF::GetModuleMutex() const {
1975  lldb::ModuleSP module_sp(m_debug_map_module_wp.lock());
1976  if (module_sp)
1977  return module_sp->GetMutex();
1978  return GetObjectFile()->GetModule()->GetMutex();
1979 }
1980 
1982  const lldb_private::CompilerDeclContext *decl_ctx) {
1983  if (decl_ctx == nullptr || !decl_ctx->IsValid()) {
1984  // Invalid namespace decl which means we aren't matching only things in
1985  // this symbol file, so return true to indicate it matches this symbol
1986  // file.
1987  return true;
1988  }
1989 
1990  TypeSystem *decl_ctx_type_system = decl_ctx->GetTypeSystem();
1991  TypeSystem *type_system = GetTypeSystemForLanguage(
1992  decl_ctx_type_system->GetMinimumLanguage(nullptr));
1993  if (decl_ctx_type_system == type_system)
1994  return true; // The type systems match, return true
1995 
1996  // The namespace AST was valid, and it does not match...
1997  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
1998 
1999  if (log)
2000  GetObjectFile()->GetModule()->LogMessage(
2001  log, "Valid namespace does not match symbol file");
2002 
2003  return false;
2004 }
2005 
2007  ConstString name, const CompilerDeclContext *parent_decl_ctx,
2008  uint32_t max_matches, VariableList &variables) {
2009  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2010 
2011  if (log)
2012  GetObjectFile()->GetModule()->LogMessage(
2013  log,
2014  "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", "
2015  "parent_decl_ctx=%p, max_matches=%u, variables)",
2016  name.GetCString(), static_cast<const void *>(parent_decl_ctx),
2017  max_matches);
2018 
2019  if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx))
2020  return 0;
2021 
2022  DWARFDebugInfo *info = DebugInfo();
2023  if (info == NULL)
2024  return 0;
2025 
2026  // Remember how many variables are in the list before we search.
2027  const uint32_t original_size = variables.GetSize();
2028 
2029  llvm::StringRef basename;
2030  llvm::StringRef context;
2031  bool name_is_mangled = (bool)Mangled(name);
2032 
2033  if (!CPlusPlusLanguage::ExtractContextAndIdentifier(name.GetCString(),
2034  context, basename))
2035  basename = name.GetStringRef();
2036 
2037  DIEArray die_offsets;
2038  m_index->GetGlobalVariables(ConstString(basename), die_offsets);
2039  const size_t num_die_matches = die_offsets.size();
2040  if (num_die_matches) {
2041  SymbolContext sc;
2042  sc.module_sp = m_obj_file->GetModule();
2043  assert(sc.module_sp);
2044 
2045  // Loop invariant: Variables up to this index have been checked for context
2046  // matches.
2047  uint32_t pruned_idx = original_size;
2048 
2049  bool done = false;
2050  for (size_t i = 0; i < num_die_matches && !done; ++i) {
2051  const DIERef &die_ref = die_offsets[i];
2052  DWARFDIE die = GetDIE(die_ref);
2053 
2054  if (die) {
2055  switch (die.Tag()) {
2056  default:
2057  case DW_TAG_subprogram:
2058  case DW_TAG_inlined_subroutine:
2059  case DW_TAG_try_block:
2060  case DW_TAG_catch_block:
2061  break;
2062 
2063  case DW_TAG_variable: {
2065 
2066  if (parent_decl_ctx) {
2067  DWARFASTParser *dwarf_ast = die.GetDWARFParser();
2068  if (dwarf_ast) {
2069  CompilerDeclContext actual_parent_decl_ctx =
2070  dwarf_ast->GetDeclContextContainingUIDFromDWARF(die);
2071  if (!actual_parent_decl_ctx ||
2072  actual_parent_decl_ctx != *parent_decl_ctx)
2073  continue;
2074  }
2075  }
2076 
2077  ParseVariables(sc, die, LLDB_INVALID_ADDRESS, false, false,
2078  &variables);
2079  while (pruned_idx < variables.GetSize()) {
2080  VariableSP var_sp = variables.GetVariableAtIndex(pruned_idx);
2081  if (name_is_mangled ||
2082  var_sp->GetName().GetStringRef().contains(name.GetStringRef()))
2083  ++pruned_idx;
2084  else
2085  variables.RemoveVariableAtIndex(pruned_idx);
2086  }
2087 
2088  if (variables.GetSize() - original_size >= max_matches)
2089  done = true;
2090  } break;
2091  }
2092  } else {
2093  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2094  name.GetStringRef());
2095  }
2096  }
2097  }
2098 
2099  // Return the number of variable that were appended to the list
2100  const uint32_t num_matches = variables.GetSize() - original_size;
2101  if (log && num_matches > 0) {
2102  GetObjectFile()->GetModule()->LogMessage(
2103  log,
2104  "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", "
2105  "parent_decl_ctx=%p, max_matches=%u, variables) => %u",
2106  name.GetCString(), static_cast<const void *>(parent_decl_ctx),
2107  max_matches, num_matches);
2108  }
2109  return num_matches;
2110 }
2111 
2113  uint32_t max_matches,
2114  VariableList &variables) {
2115  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2116 
2117  if (log) {
2118  GetObjectFile()->GetModule()->LogMessage(
2119  log,
2120  "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", "
2121  "max_matches=%u, variables)",
2122  regex.GetText().str().c_str(), max_matches);
2123  }
2124 
2125  DWARFDebugInfo *info = DebugInfo();
2126  if (info == NULL)
2127  return 0;
2128 
2129  // Remember how many variables are in the list before we search.
2130  const uint32_t original_size = variables.GetSize();
2131 
2132  DIEArray die_offsets;
2133  m_index->GetGlobalVariables(regex, die_offsets);
2134 
2135  SymbolContext sc;
2136  sc.module_sp = m_obj_file->GetModule();
2137  assert(sc.module_sp);
2138 
2139  const size_t num_matches = die_offsets.size();
2140  if (num_matches) {
2141  for (size_t i = 0; i < num_matches; ++i) {
2142  const DIERef &die_ref = die_offsets[i];
2143  DWARFDIE die = GetDIE(die_ref);
2144 
2145  if (die) {
2147 
2148  ParseVariables(sc, die, LLDB_INVALID_ADDRESS, false, false, &variables);
2149 
2150  if (variables.GetSize() - original_size >= max_matches)
2151  break;
2152  } else
2153  m_index->ReportInvalidDIEOffset(die_ref.die_offset, regex.GetText());
2154  }
2155  }
2156 
2157  // Return the number of variable that were appended to the list
2158  return variables.GetSize() - original_size;
2159 }
2160 
2162  bool include_inlines,
2163  SymbolContextList &sc_list) {
2164  SymbolContext sc;
2165 
2166  if (!orig_die)
2167  return false;
2168 
2169  // If we were passed a die that is not a function, just return false...
2170  if (!(orig_die.Tag() == DW_TAG_subprogram ||
2171  (include_inlines && orig_die.Tag() == DW_TAG_inlined_subroutine)))
2172  return false;
2173 
2174  DWARFDIE die = orig_die;
2175  DWARFDIE inlined_die;
2176  if (die.Tag() == DW_TAG_inlined_subroutine) {
2177  inlined_die = die;
2178 
2179  while (1) {
2180  die = die.GetParent();
2181 
2182  if (die) {
2183  if (die.Tag() == DW_TAG_subprogram)
2184  break;
2185  } else
2186  break;
2187  }
2188  }
2189  assert(die && die.Tag() == DW_TAG_subprogram);
2190  if (GetFunction(die, sc)) {
2191  Address addr;
2192  // Parse all blocks if needed
2193  if (inlined_die) {
2194  Block &function_block = sc.function->GetBlock(true);
2195  sc.block = function_block.FindBlockByID(inlined_die.GetID());
2196  if (sc.block == NULL)
2197  sc.block = function_block.FindBlockByID(inlined_die.GetOffset());
2198  if (sc.block == NULL || !sc.block->GetStartAddress(addr))
2199  addr.Clear();
2200  } else {
2201  sc.block = NULL;
2202  addr = sc.function->GetAddressRange().GetBaseAddress();
2203  }
2204 
2205  if (addr.IsValid()) {
2206  sc_list.Append(sc);
2207  return true;
2208  }
2209  }
2210 
2211  return false;
2212 }
2213 
2215  const DWARFDIE &die) {
2216  // If we have no parent decl context to match this DIE matches, and if the
2217  // parent decl context isn't valid, we aren't trying to look for any
2218  // particular decl context so any die matches.
2219  if (decl_ctx == nullptr || !decl_ctx->IsValid())
2220  return true;
2221 
2222  if (die) {
2223  DWARFASTParser *dwarf_ast = die.GetDWARFParser();
2224  if (dwarf_ast) {
2225  CompilerDeclContext actual_decl_ctx =
2226  dwarf_ast->GetDeclContextContainingUIDFromDWARF(die);
2227  if (actual_decl_ctx)
2228  return decl_ctx->IsContainedInLookup(actual_decl_ctx);
2229  }
2230  }
2231  return false;
2232 }
2233 
2235  ConstString name, const CompilerDeclContext *parent_decl_ctx,
2236  FunctionNameType name_type_mask, bool include_inlines, bool append,
2237  SymbolContextList &sc_list) {
2238  static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
2239  Timer scoped_timer(func_cat, "SymbolFileDWARF::FindFunctions (name = '%s')",
2240  name.AsCString());
2241 
2242  // eFunctionNameTypeAuto should be pre-resolved by a call to
2243  // Module::LookupInfo::LookupInfo()
2244  assert((name_type_mask & eFunctionNameTypeAuto) == 0);
2245 
2246  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2247 
2248  if (log) {
2249  GetObjectFile()->GetModule()->LogMessage(
2250  log, "SymbolFileDWARF::FindFunctions (name=\"%s\", "
2251  "name_type_mask=0x%x, append=%u, sc_list)",
2252  name.GetCString(), name_type_mask, append);
2253  }
2254 
2255  // If we aren't appending the results to this list, then clear the list
2256  if (!append)
2257  sc_list.Clear();
2258 
2259  if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx))
2260  return 0;
2261 
2262  // If name is empty then we won't find anything.
2263  if (name.IsEmpty())
2264  return 0;
2265 
2266  // Remember how many sc_list are in the list before we search in case we are
2267  // appending the results to a variable list.
2268 
2269  const uint32_t original_size = sc_list.GetSize();
2270 
2271  DWARFDebugInfo *info = DebugInfo();
2272  if (info == NULL)
2273  return 0;
2274 
2275  llvm::DenseSet<const DWARFDebugInfoEntry *> resolved_dies;
2276  DIEArray offsets;
2277  CompilerDeclContext empty_decl_ctx;
2278  if (!parent_decl_ctx)
2279  parent_decl_ctx = &empty_decl_ctx;
2280 
2281  std::vector<DWARFDIE> dies;
2282  m_index->GetFunctions(name, *info, *parent_decl_ctx, name_type_mask, dies);
2283  for (const DWARFDIE &die: dies) {
2284  if (resolved_dies.insert(die.GetDIE()).second)
2285  ResolveFunction(die, include_inlines, sc_list);
2286  }
2287 
2288  // Return the number of variable that were appended to the list
2289  const uint32_t num_matches = sc_list.GetSize() - original_size;
2290 
2291  if (log && num_matches > 0) {
2292  GetObjectFile()->GetModule()->LogMessage(
2293  log, "SymbolFileDWARF::FindFunctions (name=\"%s\", "
2294  "name_type_mask=0x%x, include_inlines=%d, append=%u, sc_list) => "
2295  "%u",
2296  name.GetCString(), name_type_mask, include_inlines, append,
2297  num_matches);
2298  }
2299  return num_matches;
2300 }
2301 
2303  bool include_inlines, bool append,
2304  SymbolContextList &sc_list) {
2305  static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
2306  Timer scoped_timer(func_cat, "SymbolFileDWARF::FindFunctions (regex = '%s')",
2307  regex.GetText().str().c_str());
2308 
2309  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2310 
2311  if (log) {
2312  GetObjectFile()->GetModule()->LogMessage(
2313  log,
2314  "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
2315  regex.GetText().str().c_str(), append);
2316  }
2317 
2318  // If we aren't appending the results to this list, then clear the list
2319  if (!append)
2320  sc_list.Clear();
2321 
2322  DWARFDebugInfo *info = DebugInfo();
2323  if (!info)
2324  return 0;
2325 
2326  // Remember how many sc_list are in the list before we search in case we are
2327  // appending the results to a variable list.
2328  uint32_t original_size = sc_list.GetSize();
2329 
2330  DIEArray offsets;
2331  m_index->GetFunctions(regex, offsets);
2332 
2333  llvm::DenseSet<const DWARFDebugInfoEntry *> resolved_dies;
2334  for (DIERef ref : offsets) {
2335  DWARFDIE die = info->GetDIE(ref);
2336  if (!die) {
2337  m_index->ReportInvalidDIEOffset(ref.die_offset, regex.GetText());
2338  continue;
2339  }
2340  if (resolved_dies.insert(die.GetDIE()).second)
2341  ResolveFunction(die, include_inlines, sc_list);
2342  }
2343 
2344  // Return the number of variable that were appended to the list
2345  return sc_list.GetSize() - original_size;
2346 }
2347 
2349  const std::string &scope_qualified_name,
2350  std::vector<ConstString> &mangled_names) {
2351  DWARFDebugInfo *info = DebugInfo();
2352  uint32_t num_comp_units = 0;
2353  if (info)
2354  num_comp_units = info->GetNumCompileUnits();
2355 
2356  for (uint32_t i = 0; i < num_comp_units; i++) {
2357  DWARFUnit *cu = info->GetCompileUnitAtIndex(i);
2358  if (cu == nullptr)
2359  continue;
2360 
2361  SymbolFileDWARFDwo *dwo = cu->GetDwoSymbolFile();
2362  if (dwo)
2363  dwo->GetMangledNamesForFunction(scope_qualified_name, mangled_names);
2364  }
2365 
2366  NameToOffsetMap::iterator iter =
2367  m_function_scope_qualified_name_map.find(scope_qualified_name);
2368  if (iter == m_function_scope_qualified_name_map.end())
2369  return;
2370 
2371  DIERefSetSP set_sp = (*iter).second;
2372  std::set<DIERef>::iterator set_iter;
2373  for (set_iter = set_sp->begin(); set_iter != set_sp->end(); set_iter++) {
2374  DWARFDIE die = DebugInfo()->GetDIE(*set_iter);
2375  mangled_names.push_back(ConstString(die.GetMangledName()));
2376  }
2377 }
2378 
2380  ConstString name, const CompilerDeclContext *parent_decl_ctx,
2381  bool append, uint32_t max_matches,
2382  llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
2383  TypeMap &types) {
2384  // If we aren't appending the results to this list, then clear the list
2385  if (!append)
2386  types.Clear();
2387 
2388  // Make sure we haven't already searched this SymbolFile before...
2389  if (searched_symbol_files.count(this))
2390  return 0;
2391  else
2392  searched_symbol_files.insert(this);
2393 
2394  DWARFDebugInfo *info = DebugInfo();
2395  if (info == NULL)
2396  return 0;
2397 
2398  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2399 
2400  if (log) {
2401  if (parent_decl_ctx)
2402  GetObjectFile()->GetModule()->LogMessage(
2403  log, "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = "
2404  "%p (\"%s\"), append=%u, max_matches=%u, type_list)",
2405  name.GetCString(), static_cast<const void *>(parent_decl_ctx),
2406  parent_decl_ctx->GetName().AsCString("<NULL>"), append, max_matches);
2407  else
2408  GetObjectFile()->GetModule()->LogMessage(
2409  log, "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = "
2410  "NULL, append=%u, max_matches=%u, type_list)",
2411  name.GetCString(), append, max_matches);
2412  }
2413 
2414  if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx))
2415  return 0;
2416 
2417  DIEArray die_offsets;
2418  m_index->GetTypes(name, die_offsets);
2419  const size_t num_die_matches = die_offsets.size();
2420 
2421  if (num_die_matches) {
2422  const uint32_t initial_types_size = types.GetSize();
2423  for (size_t i = 0; i < num_die_matches; ++i) {
2424  const DIERef &die_ref = die_offsets[i];
2425  DWARFDIE die = GetDIE(die_ref);
2426 
2427  if (die) {
2428  if (!DIEInDeclContext(parent_decl_ctx, die))
2429  continue; // The containing decl contexts don't match
2430 
2431  Type *matching_type = ResolveType(die, true, true);
2432  if (matching_type) {
2433  // We found a type pointer, now find the shared pointer form our type
2434  // list
2435  types.InsertUnique(matching_type->shared_from_this());
2436  if (types.GetSize() >= max_matches)
2437  break;
2438  }
2439  } else {
2440  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2441  name.GetStringRef());
2442  }
2443  }
2444  const uint32_t num_matches = types.GetSize() - initial_types_size;
2445  if (log && num_matches) {
2446  if (parent_decl_ctx) {
2447  GetObjectFile()->GetModule()->LogMessage(
2448  log, "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx "
2449  "= %p (\"%s\"), append=%u, max_matches=%u, type_list) => %u",
2450  name.GetCString(), static_cast<const void *>(parent_decl_ctx),
2451  parent_decl_ctx->GetName().AsCString("<NULL>"), append, max_matches,
2452  num_matches);
2453  } else {
2454  GetObjectFile()->GetModule()->LogMessage(
2455  log, "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx "
2456  "= NULL, append=%u, max_matches=%u, type_list) => %u",
2457  name.GetCString(), append, max_matches, num_matches);
2458  }
2459  }
2460  return num_matches;
2461  } else {
2463 
2464  for (const auto &pair : m_external_type_modules) {
2465  ModuleSP external_module_sp = pair.second;
2466  if (external_module_sp) {
2467  SymbolVendor *sym_vendor = external_module_sp->GetSymbolVendor();
2468  if (sym_vendor) {
2469  const uint32_t num_external_matches =
2470  sym_vendor->FindTypes(name, parent_decl_ctx, append, max_matches,
2471  searched_symbol_files, types);
2472  if (num_external_matches)
2473  return num_external_matches;
2474  }
2475  }
2476  }
2477  }
2478 
2479  return 0;
2480 }
2481 
2482 size_t SymbolFileDWARF::FindTypes(const std::vector<CompilerContext> &context,
2483  bool append, TypeMap &types) {
2484  if (!append)
2485  types.Clear();
2486 
2487  if (context.empty())
2488  return 0;
2489 
2490  ConstString name = context.back().name;
2491 
2492  if (!name)
2493  return 0;
2494 
2495  DIEArray die_offsets;
2496  m_index->GetTypes(name, die_offsets);
2497  const size_t num_die_matches = die_offsets.size();
2498 
2499  if (num_die_matches) {
2500  size_t num_matches = 0;
2501  for (size_t i = 0; i < num_die_matches; ++i) {
2502  const DIERef &die_ref = die_offsets[i];
2503  DWARFDIE die = GetDIE(die_ref);
2504 
2505  if (die) {
2506  std::vector<CompilerContext> die_context;
2507  die.GetDeclContext(die_context);
2508  if (die_context != context)
2509  continue;
2510 
2511  Type *matching_type = ResolveType(die, true, true);
2512  if (matching_type) {
2513  // We found a type pointer, now find the shared pointer form our type
2514  // list
2515  types.InsertUnique(matching_type->shared_from_this());
2516  ++num_matches;
2517  }
2518  } else {
2519  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2520  name.GetStringRef());
2521  }
2522  }
2523  return num_matches;
2524  }
2525  return 0;
2526 }
2527 
2530  const CompilerDeclContext *parent_decl_ctx) {
2531  Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2532 
2533  if (log) {
2534  GetObjectFile()->GetModule()->LogMessage(
2535  log, "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
2536  name.GetCString());
2537  }
2538 
2539  CompilerDeclContext namespace_decl_ctx;
2540 
2541  if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx))
2542  return namespace_decl_ctx;
2543 
2544  DWARFDebugInfo *info = DebugInfo();
2545  if (info) {
2546  DIEArray die_offsets;
2547  m_index->GetNamespaces(name, die_offsets);
2548  const size_t num_matches = die_offsets.size();
2549  if (num_matches) {
2550  for (size_t i = 0; i < num_matches; ++i) {
2551  const DIERef &die_ref = die_offsets[i];
2552  DWARFDIE die = GetDIE(die_ref);
2553 
2554  if (die) {
2555  if (!DIEInDeclContext(parent_decl_ctx, die))
2556  continue; // The containing decl contexts don't match
2557 
2558  DWARFASTParser *dwarf_ast = die.GetDWARFParser();
2559  if (dwarf_ast) {
2560  namespace_decl_ctx = dwarf_ast->GetDeclContextForUIDFromDWARF(die);
2561  if (namespace_decl_ctx)
2562  break;
2563  }
2564  } else {
2565  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2566  name.GetStringRef());
2567  }
2568  }
2569  }
2570  }
2571  if (log && namespace_decl_ctx) {
2572  GetObjectFile()->GetModule()->LogMessage(
2573  log, "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => "
2574  "CompilerDeclContext(%p/%p) \"%s\"",
2575  name.GetCString(),
2576  static_cast<const void *>(namespace_decl_ctx.GetTypeSystem()),
2577  static_cast<const void *>(namespace_decl_ctx.GetOpaqueDeclContext()),
2578  namespace_decl_ctx.GetName().AsCString("<NULL>"));
2579  }
2580 
2581  return namespace_decl_ctx;
2582 }
2583 
2585  bool resolve_function_context) {
2586  TypeSP type_sp;
2587  if (die) {
2588  Type *type_ptr = GetDIEToType().lookup(die.GetDIE());
2589  if (type_ptr == NULL) {
2590  CompileUnit *lldb_cu = GetCompUnitForDWARFCompUnit(die.GetCU());
2591  assert(lldb_cu);
2592  SymbolContext sc(lldb_cu);
2593  const DWARFDebugInfoEntry *parent_die = die.GetParent().GetDIE();
2594  while (parent_die != nullptr) {
2595  if (parent_die->Tag() == DW_TAG_subprogram)
2596  break;
2597  parent_die = parent_die->GetParent();
2598  }
2599  SymbolContext sc_backup = sc;
2600  if (resolve_function_context && parent_die != nullptr &&
2601  !GetFunction(DWARFDIE(die.GetCU(), parent_die), sc))
2602  sc = sc_backup;
2603 
2604  type_sp = ParseType(sc, die, NULL);
2605  } else if (type_ptr != DIE_IS_BEING_PARSED) {
2606  // Grab the existing type from the master types lists
2607  type_sp = type_ptr->shared_from_this();
2608  }
2609  }
2610  return type_sp;
2611 }
2612 
2613 DWARFDIE
2615  if (orig_die) {
2616  DWARFDIE die = orig_die;
2617 
2618  while (die) {
2619  // If this is the original DIE that we are searching for a declaration
2620  // for, then don't look in the cache as we don't want our own decl
2621  // context to be our decl context...
2622  if (orig_die != die) {
2623  switch (die.Tag()) {
2624  case DW_TAG_compile_unit:
2625  case DW_TAG_partial_unit:
2626  case DW_TAG_namespace:
2627  case DW_TAG_structure_type:
2628  case DW_TAG_union_type:
2629  case DW_TAG_class_type:
2630  case DW_TAG_lexical_block:
2631  case DW_TAG_subprogram:
2632  return die;
2633  case DW_TAG_inlined_subroutine: {
2634  DWARFDIE abs_die = die.GetReferencedDIE(DW_AT_abstract_origin);
2635  if (abs_die) {
2636  return abs_die;
2637  }
2638  break;
2639  }
2640  default:
2641  break;
2642  }
2643  }
2644 
2645  DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification);
2646  if (spec_die) {
2647  DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(spec_die);
2648  if (decl_ctx_die)
2649  return decl_ctx_die;
2650  }
2651 
2652  DWARFDIE abs_die = die.GetReferencedDIE(DW_AT_abstract_origin);
2653  if (abs_die) {
2654  DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(abs_die);
2655  if (decl_ctx_die)
2656  return decl_ctx_die;
2657  }
2658 
2659  die = die.GetParent();
2660  }
2661  }
2662  return DWARFDIE();
2663 }
2664 
2665 Symbol *
2667  Symbol *objc_class_symbol = NULL;
2668  if (m_obj_file) {
2669  Symtab *symtab = m_obj_file->GetSymtab();
2670  if (symtab) {
2671  objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(
2672  objc_class_name, eSymbolTypeObjCClass, Symtab::eDebugNo,
2673  Symtab::eVisibilityAny);
2674  }
2675  }
2676  return objc_class_symbol;
2677 }
2678 
2679 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If
2680 // they don't then we can end up looking through all class types for a complete
2681 // type and never find the full definition. We need to know if this attribute
2682 // is supported, so we determine this here and cache th result. We also need to
2683 // worry about the debug map
2684 // DWARF file
2685 // if we are doing darwin DWARF in .o file debugging.
2687  DWARFUnit *cu) {
2692  else {
2693  DWARFDebugInfo *debug_info = DebugInfo();
2694  const uint32_t num_compile_units = GetNumCompileUnits();
2695  for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
2696  DWARFUnit *dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
2697  if (dwarf_cu != cu &&
2700  break;
2701  }
2702  }
2703  }
2707  }
2709 }
2710 
2711 // This function can be used when a DIE is found that is a forward declaration
2712 // DIE and we want to try and find a type that has the complete definition.
2714  const DWARFDIE &die, ConstString type_name,
2715  bool must_be_implementation) {
2716 
2717  TypeSP type_sp;
2718 
2719  if (!type_name || (must_be_implementation && !GetObjCClassSymbol(type_name)))
2720  return type_sp;
2721 
2722  DIEArray die_offsets;
2723  m_index->GetCompleteObjCClass(type_name, must_be_implementation, die_offsets);
2724 
2725  const size_t num_matches = die_offsets.size();
2726 
2727  if (num_matches) {
2728  for (size_t i = 0; i < num_matches; ++i) {
2729  const DIERef &die_ref = die_offsets[i];
2730  DWARFDIE type_die = GetDIE(die_ref);
2731 
2732  if (type_die) {
2733  bool try_resolving_type = false;
2734 
2735  // Don't try and resolve the DIE we are looking for with the DIE
2736  // itself!
2737  if (type_die != die) {
2738  switch (type_die.Tag()) {
2739  case DW_TAG_class_type:
2740  case DW_TAG_structure_type:
2741  try_resolving_type = true;
2742  break;
2743  default:
2744  break;
2745  }
2746  }
2747 
2748  if (try_resolving_type) {
2749  if (must_be_implementation &&
2751  try_resolving_type = type_die.GetAttributeValueAsUnsigned(
2752  DW_AT_APPLE_objc_complete_type, 0);
2753 
2754  if (try_resolving_type) {
2755  Type *resolved_type = ResolveType(type_die, false, true);
2756  if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) {
2757  DEBUG_PRINTF("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64
2758  " (cu 0x%8.8" PRIx64 ")\n",
2759  die.GetID(),
2761  "<Unknown>"),
2762  type_die.GetID(), type_cu->GetID());
2763 
2764  if (die)
2765  GetDIEToType()[die.GetDIE()] = resolved_type;
2766  type_sp = resolved_type->shared_from_this();
2767  break;
2768  }
2769  }
2770  }
2771  } else {
2772  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2773  type_name.GetStringRef());
2774  }
2775  }
2776  }
2777  return type_sp;
2778 }
2779 
2780 // This function helps to ensure that the declaration contexts match for two
2781 // different DIEs. Often times debug information will refer to a forward
2782 // declaration of a type (the equivalent of "struct my_struct;". There will
2783 // often be a declaration of that type elsewhere that has the full definition.
2784 // When we go looking for the full type "my_struct", we will find one or more
2785 // matches in the accelerator tables and we will then need to make sure the
2786 // type was in the same declaration context as the original DIE. This function
2787 // can efficiently compare two DIEs and will return true when the declaration
2788 // context matches, and false when they don't.
2790  const DWARFDIE &die2) {
2791  if (die1 == die2)
2792  return true;
2793 
2794  std::vector<DWARFDIE> decl_ctx_1;
2795  std::vector<DWARFDIE> decl_ctx_2;
2796  // The declaration DIE stack is a stack of the declaration context DIEs all
2797  // the way back to the compile unit. If a type "T" is declared inside a class
2798  // "B", and class "B" is declared inside a class "A" and class "A" is in a
2799  // namespace "lldb", and the namespace is in a compile unit, there will be a
2800  // stack of DIEs:
2801  //
2802  // [0] DW_TAG_class_type for "B"
2803  // [1] DW_TAG_class_type for "A"
2804  // [2] DW_TAG_namespace for "lldb"
2805  // [3] DW_TAG_compile_unit or DW_TAG_partial_unit for the source file.
2806  //
2807  // We grab both contexts and make sure that everything matches all the way
2808  // back to the compiler unit.
2809 
2810  // First lets grab the decl contexts for both DIEs
2811  decl_ctx_1 = die1.GetDeclContextDIEs();
2812  decl_ctx_2 = die2.GetDeclContextDIEs();
2813  // Make sure the context arrays have the same size, otherwise we are done
2814  const size_t count1 = decl_ctx_1.size();
2815  const size_t count2 = decl_ctx_2.size();
2816  if (count1 != count2)
2817  return false;
2818 
2819  // Make sure the DW_TAG values match all the way back up the compile unit. If
2820  // they don't, then we are done.
2821  DWARFDIE decl_ctx_die1;
2822  DWARFDIE decl_ctx_die2;
2823  size_t i;
2824  for (i = 0; i < count1; i++) {
2825  decl_ctx_die1 = decl_ctx_1[i];
2826  decl_ctx_die2 = decl_ctx_2[i];
2827  if (decl_ctx_die1.Tag() != decl_ctx_die2.Tag())
2828  return false;
2829  }
2830 #ifndef NDEBUG
2831 
2832  // Make sure the top item in the decl context die array is always
2833  // DW_TAG_compile_unit or DW_TAG_partial_unit. If it isn't then
2834  // something went wrong in the DWARFDIE::GetDeclContextDIEs()
2835  // function.
2836  dw_tag_t cu_tag = decl_ctx_1[count1 - 1].Tag();
2837  UNUSED_IF_ASSERT_DISABLED(cu_tag);
2838  assert(cu_tag == DW_TAG_compile_unit || cu_tag == DW_TAG_partial_unit);
2839 
2840 #endif
2841  // Always skip the compile unit when comparing by only iterating up to "count
2842  // - 1". Here we compare the names as we go.
2843  for (i = 0; i < count1 - 1; i++) {
2844  decl_ctx_die1 = decl_ctx_1[i];
2845  decl_ctx_die2 = decl_ctx_2[i];
2846  const char *name1 = decl_ctx_die1.GetName();
2847  const char *name2 = decl_ctx_die2.GetName();
2848  // If the string was from a DW_FORM_strp, then the pointer will often be
2849  // the same!
2850  if (name1 == name2)
2851  continue;
2852 
2853  // Name pointers are not equal, so only compare the strings if both are not
2854  // NULL.
2855  if (name1 && name2) {
2856  // If the strings don't compare, we are done...
2857  if (strcmp(name1, name2) != 0)
2858  return false;
2859  } else {
2860  // One name was NULL while the other wasn't
2861  return false;
2862  }
2863  }
2864  // We made it through all of the checks and the declaration contexts are
2865  // equal.
2866  return true;
2867 }
2868 
2870  const DWARFDeclContext &dwarf_decl_ctx) {
2871  TypeSP type_sp;
2872 
2873  const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
2874  if (dwarf_decl_ctx_count > 0) {
2875  const ConstString type_name(dwarf_decl_ctx[0].name);
2876  const dw_tag_t tag = dwarf_decl_ctx[0].tag;
2877 
2878  if (type_name) {
2879  Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
2881  if (log) {
2882  GetObjectFile()->GetModule()->LogMessage(
2883  log, "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%"
2884  "s, qualified-name='%s')",
2885  DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
2886  dwarf_decl_ctx.GetQualifiedName());
2887  }
2888 
2889  DIEArray die_offsets;
2890  m_index->GetTypes(dwarf_decl_ctx, die_offsets);
2891  const size_t num_matches = die_offsets.size();
2892 
2893  // Get the type system that we are looking to find a type for. We will
2894  // use this to ensure any matches we find are in a language that this
2895  // type system supports
2896  const LanguageType language = dwarf_decl_ctx.GetLanguage();
2897  TypeSystem *type_system = (language == eLanguageTypeUnknown)
2898  ? nullptr
2899  : GetTypeSystemForLanguage(language);
2900 
2901  if (num_matches) {
2902  for (size_t i = 0; i < num_matches; ++i) {
2903  const DIERef &die_ref = die_offsets[i];
2904  DWARFDIE type_die = GetDIE(die_ref);
2905 
2906  if (type_die) {
2907  // Make sure type_die's langauge matches the type system we are
2908  // looking for. We don't want to find a "Foo" type from Java if we
2909  // are looking for a "Foo" type for C, C++, ObjC, or ObjC++.
2910  if (type_system &&
2911  !type_system->SupportsLanguage(type_die.GetLanguage()))
2912  continue;
2913  bool try_resolving_type = false;
2914 
2915  // Don't try and resolve the DIE we are looking for with the DIE
2916  // itself!
2917  const dw_tag_t type_tag = type_die.Tag();
2918  // Make sure the tags match
2919  if (type_tag == tag) {
2920  // The tags match, lets try resolving this type
2921  try_resolving_type = true;
2922  } else {
2923  // The tags don't match, but we need to watch our for a forward
2924  // declaration for a struct and ("struct foo") ends up being a
2925  // class ("class foo { ... };") or vice versa.
2926  switch (type_tag) {
2927  case DW_TAG_class_type:
2928  // We had a "class foo", see if we ended up with a "struct foo
2929  // { ... };"
2930  try_resolving_type = (tag == DW_TAG_structure_type);
2931  break;
2932  case DW_TAG_structure_type:
2933  // We had a "struct foo", see if we ended up with a "class foo
2934  // { ... };"
2935  try_resolving_type = (tag == DW_TAG_class_type);
2936  break;
2937  default:
2938  // Tags don't match, don't event try to resolve using this type
2939  // whose name matches....
2940  break;
2941  }
2942  }
2943 
2944  if (try_resolving_type) {
2945  DWARFDeclContext type_dwarf_decl_ctx;
2946  type_die.GetDWARFDeclContext(type_dwarf_decl_ctx);
2947 
2948  if (log) {
2949  GetObjectFile()->GetModule()->LogMessage(
2950  log, "SymbolFileDWARF::"
2951  "FindDefinitionTypeForDWARFDeclContext(tag=%s, "
2952  "qualified-name='%s') trying die=0x%8.8x (%s)",
2953  DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
2954  dwarf_decl_ctx.GetQualifiedName(), type_die.GetOffset(),
2955  type_dwarf_decl_ctx.GetQualifiedName());
2956  }
2957 
2958  // Make sure the decl contexts match all the way up
2959  if (dwarf_decl_ctx == type_dwarf_decl_ctx) {
2960  Type *resolved_type = ResolveType(type_die, false);
2961  if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) {
2962  type_sp = resolved_type->shared_from_this();
2963  break;
2964  }
2965  }
2966  } else {
2967  if (log) {
2968  std::string qualified_name;
2969  type_die.GetQualifiedName(qualified_name);
2970  GetObjectFile()->GetModule()->LogMessage(
2971  log, "SymbolFileDWARF::"
2972  "FindDefinitionTypeForDWARFDeclContext(tag=%s, "
2973  "qualified-name='%s') ignoring die=0x%8.8x (%s)",
2974  DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
2975  dwarf_decl_ctx.GetQualifiedName(), type_die.GetOffset(),
2976  qualified_name.c_str());
2977  }
2978  }
2979  } else {
2980  m_index->ReportInvalidDIEOffset(die_ref.die_offset,
2981  type_name.GetStringRef());
2982  }
2983  }
2984  }
2985  }
2986  }
2987  return type_sp;
2988 }
2989 
2991  bool *type_is_new_ptr) {
2992  TypeSP type_sp;
2993 
2994  if (die) {
2995  TypeSystem *type_system =
2997 
2998  if (type_system) {
2999  DWARFASTParser *dwarf_ast = type_system->GetDWARFParser();
3000  if (dwarf_ast) {
3001  Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO);
3002  type_sp = dwarf_ast->ParseTypeFromDWARF(sc, die, log, type_is_new_ptr);
3003  if (type_sp) {
3004  TypeList *type_list = GetTypeList();
3005  if (type_list)
3006  type_list->Insert(type_sp);
3007 
3008  if (die.Tag() == DW_TAG_subprogram) {
3009  DIERef die_ref = die.GetDIERef();
3010  std::string scope_qualified_name(GetDeclContextForUID(die.GetID())
3011  .GetScopeQualifiedName()
3012  .AsCString(""));
3013  if (scope_qualified_name.size()) {
3014  NameToOffsetMap::iterator iter =
3016  scope_qualified_name);
3017  if (iter != m_function_scope_qualified_name_map.end())
3018  (*iter).second->insert(die_ref);
3019  else {
3020  DIERefSetSP new_set(new std::set<DIERef>);
3021  new_set->insert(die_ref);
3023  std::make_pair(scope_qualified_name, new_set));
3024  }
3025  }
3026  }
3027  }
3028  }
3029  }
3030  }
3031 
3032  return type_sp;
3033 }
3034 
3036  const DWARFDIE &orig_die,
3037  bool parse_siblings, bool parse_children) {
3038  size_t types_added = 0;
3039  DWARFDIE die = orig_die;
3040  while (die) {
3041  bool type_is_new = false;
3042  if (ParseType(sc, die, &type_is_new).get()) {
3043  if (type_is_new)
3044  ++types_added;
3045  }
3046 
3047  if (parse_children && die.HasChildren()) {
3048  if (die.Tag() == DW_TAG_subprogram) {
3049  SymbolContext child_sc(sc);
3050  child_sc.function = sc.comp_unit->FindFunctionByUID(die.GetID()).get();
3051  types_added += ParseTypes(child_sc, die.GetFirstChild(), true, true);
3052  } else
3053  types_added += ParseTypes(sc, die.GetFirstChild(), true, true);
3054  }
3055 
3056  if (parse_siblings)
3057  die = die.GetSibling();
3058  else
3059  die.Clear();
3060  }
3061  return types_added;
3062 }
3063 
3065  ASSERT_MODULE_LOCK(this);
3066  CompileUnit *comp_unit = func.GetCompileUnit();
3067  lldbassert(comp_unit);
3068 
3069  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(comp_unit);
3070  if (!dwarf_cu)
3071  return 0;
3072 
3073  size_t functions_added = 0;
3074  const dw_offset_t function_die_offset = func.GetID();
3075  DWARFDIE function_die = dwarf_cu->GetDIE(function_die_offset);
3076  if (function_die) {
3077  ParseBlocksRecursive(*comp_unit, &func.GetBlock(false), function_die,
3079  }
3080 
3081  return functions_added;
3082 }
3083 
3085  ASSERT_MODULE_LOCK(this);
3086  size_t types_added = 0;
3087  DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit);
3088  if (dwarf_cu) {
3089  DWARFDIE dwarf_cu_die = dwarf_cu->DIE();
3090  if (dwarf_cu_die && dwarf_cu_die.HasChildren()) {
3091  SymbolContext sc;
3092  sc.comp_unit = &comp_unit;
3093  types_added = ParseTypes(sc, dwarf_cu_die.GetFirstChild(), true, true);
3094  }
3095  }
3096 
3097  return types_added;
3098 }
3099 
3101  ASSERT_MODULE_LOCK(this);
3102  if (sc.comp_unit != NULL) {
3103  DWARFDebugInfo *info = DebugInfo();
3104  if (info == NULL)
3105  return 0;
3106 
3107  if (sc.function) {
3108  DWARFDIE function_die = info->GetDIE(DIERef(sc.function->GetID(), this));
3109 
3110  const dw_addr_t func_lo_pc = function_die.GetAttributeValueAsAddress(
3111  DW_AT_low_pc, LLDB_INVALID_ADDRESS);
3112  if (func_lo_pc != LLDB_INVALID_ADDRESS) {
3113  const size_t num_variables = ParseVariables(
3114  sc, function_die.GetFirstChild(), func_lo_pc, true, true);
3115 
3116  // Let all blocks know they have parse all their variables
3117  sc.function->GetBlock(false).SetDidParseVariables(true, true);
3118  return num_variables;
3119  }
3120  } else if (sc.comp_unit) {
3121  DWARFUnit *dwarf_cu = info->GetCompileUnitAtIndex(sc.comp_unit->GetID());
3122 
3123  if (dwarf_cu == NULL)
3124  return 0;
3125 
3126  uint32_t vars_added = 0;
3127  VariableListSP variables(sc.comp_unit->GetVariableList(false));
3128 
3129  if (variables.get() == NULL) {
3130  variables = std::make_shared<VariableList>();
3131  sc.comp_unit->SetVariableList(variables);
3132 
3133  DIEArray die_offsets;
3134  m_index->GetGlobalVariables(*dwarf_cu, die_offsets);
3135  const size_t num_matches = die_offsets.size();
3136  if (num_matches) {
3137  for (size_t i = 0; i < num_matches; ++i) {
3138  const DIERef &die_ref = die_offsets[i];
3139  DWARFDIE die = GetDIE(die_ref);
3140  if (die) {
3141  VariableSP var_sp(
3143  if (var_sp) {
3144  variables->AddVariableIfUnique(var_sp);
3145  ++vars_added;
3146  }
3147  } else
3148  m_index->ReportInvalidDIEOffset(die_ref.die_offset, "");
3149  }
3150  }
3151  }
3152  return vars_added;
3153  }
3154  }
3155  return 0;
3156 }
3157 
3159  const DWARFDIE &die,
3160  const lldb::addr_t func_low_pc) {
3161  if (die.GetDWARF() != this)
3162  return die.GetDWARF()->ParseVariableDIE(sc, die, func_low_pc);
3163 
3164  VariableSP var_sp;
3165  if (!die)
3166  return var_sp;
3167 
3168  var_sp = GetDIEToVariable()[die.GetDIE()];
3169  if (var_sp)
3170  return var_sp; // Already been parsed!
3171 
3172  const dw_tag_t tag = die.Tag();
3173  ModuleSP module = GetObjectFile()->GetModule();
3174 
3175  if ((tag == DW_TAG_variable) || (tag == DW_TAG_constant) ||
3176  (tag == DW_TAG_formal_parameter && sc.function)) {
3177  DWARFAttributes attributes;
3178  const size_t num_attributes = die.GetAttributes(attributes);
3179  DWARFDIE spec_die;
3180  if (num_attributes > 0) {
3181  const char *name = NULL;
3182  const char *mangled = NULL;
3183  Declaration decl;
3184  uint32_t i;
3185  DWARFFormValue type_die_form;
3186  DWARFExpression location(die.GetCU());
3187  bool is_external = false;
3188  bool is_artificial = false;
3189  bool location_is_const_value_data = false;
3190  bool has_explicit_location = false;
3191  DWARFFormValue const_value;
3192  Variable::RangeList scope_ranges;
3193  // AccessType accessibility = eAccessNone;
3194 
3195  for (i = 0; i < num_attributes; ++i) {
3196  dw_attr_t attr = attributes.AttributeAtIndex(i);
3197  DWARFFormValue form_value;
3198 
3199  if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3200  switch (attr) {
3201  case DW_AT_decl_file:
3202  decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
3203  form_value.Unsigned()));
3204  break;
3205  case DW_AT_decl_line:
3206  decl.SetLine(form_value.Unsigned());
3207  break;
3208  case DW_AT_decl_column:
3209  decl.SetColumn(form_value.Unsigned());
3210  break;
3211  case DW_AT_name:
3212  name = form_value.AsCString();
3213  break;
3214  case DW_AT_linkage_name:
3215  case DW_AT_MIPS_linkage_name:
3216  mangled = form_value.AsCString();
3217  break;
3218  case DW_AT_type:
3219  type_die_form = form_value;
3220  break;
3221  case DW_AT_external:
3222  is_external = form_value.Boolean();
3223  break;
3224  case DW_AT_const_value:
3225  // If we have already found a DW_AT_location attribute, ignore this
3226  // attribute.
3227  if (!has_explicit_location) {
3228  location_is_const_value_data = true;
3229  // The constant value will be either a block, a data value or a
3230  // string.
3231  auto debug_info_data = die.GetData();
3232  if (DWARFFormValue::IsBlockForm(form_value.Form())) {
3233  // Retrieve the value as a block expression.
3234  uint32_t block_offset =
3235  form_value.BlockData() - debug_info_data.GetDataStart();
3236  uint32_t block_length = form_value.Unsigned();
3237  location.CopyOpcodeData(module, debug_info_data, block_offset,
3238  block_length);
3239  } else if (DWARFFormValue::IsDataForm(form_value.Form())) {
3240  // Retrieve the value as a data expression.
3241  DWARFFormValue::FixedFormSizes fixed_form_sizes =
3243  attributes.CompileUnitAtIndex(i)->GetAddressByteSize());
3244  uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
3245  uint32_t data_length =
3246  fixed_form_sizes.GetSize(form_value.Form());
3247  if (data_length == 0) {
3248  const uint8_t *data_pointer = form_value.BlockData();
3249  if (data_pointer) {
3250  form_value.Unsigned();
3251  } else if (DWARFFormValue::IsDataForm(form_value.Form())) {
3252  // we need to get the byte size of the type later after we
3253  // create the variable
3254  const_value = form_value;
3255  }
3256  } else
3257  location.CopyOpcodeData(module, debug_info_data, data_offset,
3258  data_length);
3259  } else {
3260  // Retrieve the value as a string expression.
3261  if (form_value.Form() == DW_FORM_strp) {
3262  DWARFFormValue::FixedFormSizes fixed_form_sizes =
3264  attributes.CompileUnitAtIndex(i)
3265  ->GetAddressByteSize());
3266  uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
3267  uint32_t data_length =
3268  fixed_form_sizes.GetSize(form_value.Form());
3269  location.CopyOpcodeData(module, debug_info_data, data_offset,
3270  data_length);
3271  } else {
3272  const char *str = form_value.AsCString();
3273  uint32_t string_offset =
3274  str - (const char *)debug_info_data.GetDataStart();
3275  uint32_t string_length = strlen(str) + 1;
3276  location.CopyOpcodeData(module, debug_info_data,
3277  string_offset, string_length);
3278  }
3279  }
3280  }
3281  break;
3282  case DW_AT_location: {
3283  location_is_const_value_data = false;
3284  has_explicit_location = true;
3285  if (DWARFFormValue::IsBlockForm(form_value.Form())) {
3286  auto data = die.GetData();
3287 
3288  uint32_t block_offset =
3289  form_value.BlockData() - data.GetDataStart();
3290  uint32_t block_length = form_value.Unsigned();
3291  location.CopyOpcodeData(module, data, block_offset, block_length);
3292  } else {
3293  const DWARFDataExtractor &debug_loc_data = DebugLocData();
3294  const dw_offset_t debug_loc_offset = form_value.Unsigned();
3295 
3296  size_t loc_list_length = DWARFExpression::LocationListSize(
3297  die.GetCU(), debug_loc_data, debug_loc_offset);
3298  if (loc_list_length > 0) {
3299  location.CopyOpcodeData(module, debug_loc_data,
3300  debug_loc_offset, loc_list_length);
3301  assert(func_low_pc != LLDB_INVALID_ADDRESS);
3302  location.SetLocationListSlide(
3303  func_low_pc -
3304  attributes.CompileUnitAtIndex(i)->GetBaseAddress());
3305  }
3306  }
3307  } break;
3308  case DW_AT_specification:
3309  spec_die = GetDIE(DIERef(form_value));
3310  break;
3311  case DW_AT_start_scope: {
3312  if (form_value.Form() == DW_FORM_sec_offset) {
3313  DWARFRangeList dwarf_scope_ranges;
3314  const DWARFDebugRangesBase *debug_ranges = DebugRanges();
3315  debug_ranges->FindRanges(die.GetCU(),
3316  form_value.Unsigned(),
3317  dwarf_scope_ranges);
3318  } else {
3319  // TODO: Handle the case when DW_AT_start_scope have form
3320  // constant. The
3321  // dwarf spec is a bit ambiguous about what is the expected
3322  // behavior in case the enclosing block have a non coninious
3323  // address range and the DW_AT_start_scope entry have a form
3324  // constant.
3325  GetObjectFile()->GetModule()->ReportWarning(
3326  "0x%8.8" PRIx64
3327  ": DW_AT_start_scope has unsupported form type (0x%x)\n",
3328  die.GetID(), form_value.Form());
3329  }
3330 
3331  scope_ranges.Sort();
3332  scope_ranges.CombineConsecutiveRanges();
3333  } break;
3334  case DW_AT_artificial:
3335  is_artificial = form_value.Boolean();
3336  break;
3337  case DW_AT_accessibility:
3338  break; // accessibility =
3339  // DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
3340  case DW_AT_declaration:
3341  case DW_AT_description:
3342  case DW_AT_endianity:
3343  case DW_AT_segment:
3344  case DW_AT_visibility:
3345  default:
3346  case DW_AT_abstract_origin:
3347  case DW_AT_sibling:
3348  break;
3349  }
3350  }
3351  }
3352 
3353  const DWARFDIE parent_context_die = GetDeclContextDIEContainingDIE(die);
3354  const dw_tag_t parent_tag = die.GetParent().Tag();
3355  bool is_static_member =
3356  (parent_tag == DW_TAG_compile_unit ||
3357  parent_tag == DW_TAG_partial_unit) &&
3358  (parent_context_die.Tag() == DW_TAG_class_type ||
3359  parent_context_die.Tag() == DW_TAG_structure_type);
3360 
3361  ValueType scope = eValueTypeInvalid;
3362 
3363  const DWARFDIE sc_parent_die = GetParentSymbolContextDIE(die);
3364  SymbolContextScope *symbol_context_scope = NULL;
3365 
3366  bool has_explicit_mangled = mangled != nullptr;
3367  if (!mangled) {
3368  // LLDB relies on the mangled name (DW_TAG_linkage_name or
3369  // DW_AT_MIPS_linkage_name) to generate fully qualified names
3370  // of global variables with commands like "frame var j". For
3371  // example, if j were an int variable holding a value 4 and
3372  // declared in a namespace B which in turn is contained in a
3373  // namespace A, the command "frame var j" returns
3374  // "(int) A::B::j = 4".
3375  // If the compiler does not emit a linkage name, we should be
3376  // able to generate a fully qualified name from the
3377  // declaration context.
3378  if ((parent_tag == DW_TAG_compile_unit ||
3379  parent_tag == DW_TAG_partial_unit) &&
3380  Language::LanguageIsCPlusPlus(die.GetLanguage())) {
3381  DWARFDeclContext decl_ctx;
3382 
3383  die.GetDWARFDeclContext(decl_ctx);
3384  mangled = decl_ctx.GetQualifiedNameAsConstString().GetCString();
3385  }
3386  }
3387 
3388  if (tag == DW_TAG_formal_parameter)
3390  else {
3391  // DWARF doesn't specify if a DW_TAG_variable is a local, global
3392  // or static variable, so we have to do a little digging:
3393  // 1) DW_AT_linkage_name implies static lifetime (but may be missing)
3394  // 2) An empty DW_AT_location is an (optimized-out) static lifetime var.
3395  // 3) DW_AT_location containing a DW_OP_addr implies static lifetime.
3396  // Clang likes to combine small global variables into the same symbol
3397  // with locations like: DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
3398  // so we need to look through the whole expression.
3399  bool is_static_lifetime =
3400  has_explicit_mangled ||
3401  (has_explicit_location && !location.IsValid());
3402  // Check if the location has a DW_OP_addr with any address value...
3403  lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS;
3404  if (!location_is_const_value_data) {
3405  bool op_error = false;
3406  location_DW_OP_addr = location.GetLocation_DW_OP_addr(0, op_error);
3407  if (op_error) {
3408  StreamString strm;
3409  location.DumpLocationForAddress(&strm, eDescriptionLevelFull, 0, 0,
3410  NULL);
3411  GetObjectFile()->GetModule()->ReportError(
3412  "0x%8.8x: %s has an invalid location: %s", die.GetOffset(),
3413  die.GetTagAsCString(), strm.GetData());
3414  }
3415  if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
3416  is_static_lifetime = true;
3417  }
3418  SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
3419  if (debug_map_symfile)
3420  // Set the module of the expression to the linked module
3421  // instead of the oject file so the relocated address can be
3422  // found there.
3423  location.SetModule(debug_map_symfile->GetObjectFile()->GetModule());
3424 
3425  if (is_static_lifetime) {
3426  if (is_external)
3427  scope = eValueTypeVariableGlobal;
3428  else
3429  scope = eValueTypeVariableStatic;
3430 
3431  if (debug_map_symfile) {
3432  // When leaving the DWARF in the .o files on darwin, when we have a
3433  // global variable that wasn't initialized, the .o file might not
3434  // have allocated a virtual address for the global variable. In
3435  // this case it will have created a symbol for the global variable
3436  // that is undefined/data and external and the value will be the
3437  // byte size of the variable. When we do the address map in
3438  // SymbolFileDWARFDebugMap we rely on having an address, we need to
3439  // do some magic here so we can get the correct address for our
3440  // global variable. The address for all of these entries will be
3441  // zero, and there will be an undefined symbol in this object file,
3442  // and the executable will have a matching symbol with a good
3443  // address. So here we dig up the correct address and replace it in
3444  // the location for the variable, and set the variable's symbol
3445  // context scope to be that of the main executable so the file
3446  // address will resolve correctly.
3447  bool linked_oso_file_addr = false;
3448  if (is_external && location_DW_OP_addr == 0) {
3449  // we have a possible uninitialized extern global
3450  ConstString const_name(mangled ? mangled : name);
3451  ObjectFile *debug_map_objfile =
3452  debug_map_symfile->GetObjectFile();
3453  if (debug_map_objfile) {
3454  Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
3455  if (debug_map_symtab) {
3456  Symbol *exe_symbol =
3457  debug_map_symtab->FindFirstSymbolWithNameAndType(
3458  const_name, eSymbolTypeData, Symtab::eDebugYes,
3459  Symtab::eVisibilityExtern);
3460  if (exe_symbol) {
3461  if (exe_symbol->ValueIsAddress()) {
3462  const addr_t exe_file_addr =
3463  exe_symbol->GetAddressRef().GetFileAddress();
3464  if (exe_file_addr != LLDB_INVALID_ADDRESS) {
3465  if (location.Update_DW_OP_addr(exe_file_addr)) {
3466  linked_oso_file_addr = true;
3467  symbol_context_scope = exe_symbol;
3468  }
3469  }
3470  }
3471  }
3472  }
3473  }
3474  }
3475 
3476  if (!linked_oso_file_addr) {
3477  // The DW_OP_addr is not zero, but it contains a .o file address
3478  // which needs to be linked up correctly.
3479  const lldb::addr_t exe_file_addr =
3480  debug_map_symfile->LinkOSOFileAddress(this,
3481  location_DW_OP_addr);
3482  if (exe_file_addr != LLDB_INVALID_ADDRESS) {
3483  // Update the file address for this variable
3484  location.Update_DW_OP_addr(exe_file_addr);
3485  } else {
3486  // Variable didn't make it into the final executable
3487  return var_sp;
3488  }
3489  }
3490  }
3491  } else {
3492  if (location_is_const_value_data)
3493  scope = eValueTypeVariableStatic;
3494  else {
3495  scope = eValueTypeVariableLocal;
3496  if (debug_map_symfile) {
3497  // We need to check for TLS addresses that we need to fixup
3498  if (location.ContainsThreadLocalStorage()) {
3499  location.LinkThreadLocalStorage(
3500  debug_map_symfile->GetObjectFile()->GetModule(),
3501  [this, debug_map_symfile](
3502  lldb::addr_t unlinked_file_addr) -> lldb::addr_t {
3503  return debug_map_symfile->LinkOSOFileAddress(
3504  this, unlinked_file_addr);
3505  });
3507  }
3508  }
3509  }
3510  }
3511  }
3512 
3513  if (symbol_context_scope == NULL) {
3514  switch (parent_tag) {
3515  case DW_TAG_subprogram:
3516  case DW_TAG_inlined_subroutine:
3517  case DW_TAG_lexical_block:
3518  if (sc.function) {
3519  symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(
3520  sc_parent_die.GetID());
3521  if (symbol_context_scope == NULL)
3522  symbol_context_scope = sc.function;
3523  }
3524  break;
3525 
3526  default:
3527  symbol_context_scope = sc.comp_unit;
3528  break;
3529  }
3530  }
3531 
3532  if (symbol_context_scope) {
3533  SymbolFileTypeSP type_sp(
3534  new SymbolFileType(*this, DIERef(type_die_form).GetUID(this)));
3535 
3536  if (const_value.Form() && type_sp && type_sp->GetType())
3537  location.CopyOpcodeData(
3538  const_value.Unsigned(),
3539  type_sp->GetType()->GetByteSize().getValueOr(0),
3540  die.GetCU()->GetAddressByteSize());
3541 
3542  var_sp = std::make_shared<Variable>(
3543  die.GetID(), name, mangled, type_sp, scope, symbol_context_scope,
3544  scope_ranges, &decl, location, is_external, is_artificial,
3545  is_static_member);
3546 
3547  var_sp->SetLocationIsConstantValueData(location_is_const_value_data);
3548  } else {
3549  // Not ready to parse this variable yet. It might be a global or static
3550  // variable that is in a function scope and the function in the symbol
3551  // context wasn't filled in yet
3552  return var_sp;
3553  }
3554  }
3555  // Cache var_sp even if NULL (the variable was just a specification or was
3556  // missing vital information to be able to be displayed in the debugger
3557  // (missing location due to optimization, etc)) so we don't re-parse this
3558  // DIE over and over later...
3559  GetDIEToVariable()[die.GetDIE()] = var_sp;
3560  if (spec_die)
3561  GetDIEToVariable()[spec_die.GetDIE()] = var_sp;
3562  }
3563  return var_sp;
3564 }
3565 
3566 DWARFDIE
3568  const DIERef &func_die_ref, dw_offset_t spec_block_die_offset) {
3569  // Give the concrete function die specified by "func_die_offset", find the
3570  // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
3571  // to "spec_block_die_offset"
3572  return FindBlockContainingSpecification(DebugInfo()->GetDIE(func_die_ref),
3573  spec_block_die_offset);
3574 }
3575 
3576 DWARFDIE
3578  const DWARFDIE &die, dw_offset_t spec_block_die_offset) {
3579  if (die) {
3580  switch (die.Tag()) {
3581  case DW_TAG_subprogram:
3582  case DW_TAG_inlined_subroutine:
3583  case DW_TAG_lexical_block: {
3585  DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
3586  return die;
3587 
3588  if (die.GetAttributeValueAsReference(DW_AT_abstract_origin,
3589  DW_INVALID_OFFSET) ==
3590  spec_block_die_offset)
3591  return die;
3592  } break;
3593  }
3594 
3595  // Give the concrete function die specified by "func_die_offset", find the
3596  // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
3597  // to "spec_block_die_offset"
3598  for (DWARFDIE child_die = die.GetFirstChild(); child_die;
3599  child_die = child_die.GetSibling()) {
3600  DWARFDIE result_die =
3601  FindBlockContainingSpecification(child_die, spec_block_die_offset);
3602  if (result_die)
3603  return result_die;
3604  }
3605  }
3606 
3607  return DWARFDIE();
3608 }
3609 
3611  const DWARFDIE &orig_die,
3612  const lldb::addr_t func_low_pc,
3613  bool parse_siblings, bool parse_children,
3614  VariableList *cc_variable_list) {
3615  if (!orig_die)
3616  return 0;
3617 
3618  VariableListSP variable_list_sp;
3619 
3620  size_t vars_added = 0;
3621  DWARFDIE die = orig_die;
3622  while (die) {
3623  dw_tag_t tag = die.Tag();
3624 
3625  // Check to see if we have already parsed this variable or constant?
3626  VariableSP var_sp = GetDIEToVariable()[die.GetDIE()];
3627  if (var_sp) {
3628  if (cc_variable_list)
3629  cc_variable_list->AddVariableIfUnique(var_sp);
3630  } else {
3631  // We haven't already parsed it, lets do that now.
3632  if ((tag == DW_TAG_variable) || (tag == DW_TAG_constant) ||
3633  (tag == DW_TAG_formal_parameter && sc.function)) {
3634  if (variable_list_sp.get() == NULL) {
3635  DWARFDIE sc_parent_die = GetParentSymbolContextDIE(orig_die);
3636  dw_tag_t parent_tag = sc_parent_die.Tag();
3637  switch (parent_tag) {
3638  case DW_TAG_compile_unit:
3639  case DW_TAG_partial_unit:
3640  if (sc.comp_unit != NULL) {
3641  variable_list_sp = sc.comp_unit->GetVariableList(false);
3642  if (variable_list_sp.get() == NULL) {
3643  variable_list_sp = std::make_shared<VariableList>();
3644  }
3645  } else {
3646  GetObjectFile()->GetModule()->ReportError(
3647  "parent 0x%8.8" PRIx64 " %s with no valid compile unit in "
3648  "symbol context for 0x%8.8" PRIx64
3649  " %s.\n",
3650  sc_parent_die.GetID(), sc_parent_die.GetTagAsCString(),
3651  orig_die.GetID(), orig_die.GetTagAsCString());
3652  }
3653  break;
3654 
3655  case DW_TAG_subprogram:
3656  case DW_TAG_inlined_subroutine:
3657  case DW_TAG_lexical_block:
3658  if (sc.function != NULL) {
3659  // Check to see if we already have parsed the variables for the
3660  // given scope
3661 
3662  Block *block = sc.function->GetBlock(true).FindBlockByID(
3663  sc_parent_die.GetID());
3664  if (block == NULL) {
3665  // This must be a specification or abstract origin with a
3666  // concrete block counterpart in the current function. We need
3667  // to find the concrete block so we can correctly add the
3668  // variable to it
3669  const DWARFDIE concrete_block_die =
3671  DIERef(sc.function->GetID(), this),
3672  sc_parent_die.GetOffset());
3673  if (concrete_block_die)
3674  block = sc.function->GetBlock(true).FindBlockByID(
3675  concrete_block_die.GetID());
3676  }
3677 
3678  if (block != NULL) {
3679  const bool can_create = false;
3680  variable_list_sp = block->GetBlockVariableList(can_create);
3681  if (variable_list_sp.get() == NULL) {
3682  variable_list_sp = std::make_shared<VariableList>();
3683  block->SetVariableList(variable_list_sp);
3684  }
3685  }
3686  }
3687  break;
3688 
3689  default:
3690  GetObjectFile()->GetModule()->ReportError(
3691  "didn't find appropriate parent DIE for variable list for "
3692  "0x%8.8" PRIx64 " %s.\n",
3693  orig_die.GetID(), orig_die.GetTagAsCString());
3694  break;
3695  }
3696  }
3697 
3698  if (variable_list_sp) {
3699  VariableSP var_sp(ParseVariableDIE(sc, die, func_low_pc));
3700  if (var_sp) {
3701  variable_list_sp->AddVariableIfUnique(var_sp);
3702  if (cc_variable_list)
3703  cc_variable_list->AddVariableIfUnique(var_sp);
3704  ++vars_added;
3705  }
3706  }
3707  }
3708  }
3709 
3710  bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
3711 
3712  if (!skip_children && parse_children && die.HasChildren()) {
3713  vars_added += ParseVariables(sc, die.GetFirstChild(), func_low_pc, true,
3714  true, cc_variable_list);
3715  }
3716 
3717  if (parse_siblings)
3718  die = die.GetSibling();
3719  else
3720  die.Clear();
3721  }
3722  return vars_added;
3723 }
3724 
3725 /// Collect call graph edges present in a function DIE.
3726 static std::vector<lldb_private::CallEdge>
3728  // Check if the function has a supported call site-related attribute.
3729  // TODO: In the future it may be worthwhile to support call_all_source_calls.
3730  uint64_t has_call_edges =
3731  function_die.GetAttributeValueAsUnsigned(DW_AT_call_all_calls, 0);
3732  if (!has_call_edges)
3733  return {};
3734 
3736  LLDB_LOG(log, "CollectCallEdges: Found call site info in {0}",
3737  function_die.GetPubname());
3738 
3739  // Scan the DIE for TAG_call_site entries.
3740  // TODO: A recursive scan of all blocks in the subprogram is needed in order
3741  // to be DWARF5-compliant. This may need to be done lazily to be performant.
3742  // For now, assume that all entries are nested directly under the subprogram
3743  // (this is the kind of DWARF LLVM produces) and parse them eagerly.
3744  std::vector<CallEdge> call_edges;
3745  for (DWARFDIE child = function_die.GetFirstChild(); child.IsValid();
3746  child = child.GetSibling()) {
3747  if (child.Tag() != DW_TAG_call_site)
3748  continue;
3749 
3750  // Extract DW_AT_call_origin (the call target's DIE).
3751  DWARFDIE call_origin = child.GetReferencedDIE(DW_AT_call_origin);
3752  if (!call_origin.IsValid()) {
3753  LLDB_LOG(log, "CollectCallEdges: Invalid call origin in {0}",
3754  function_die.GetPubname());
3755  continue;
3756  }
3757 
3758  // Extract DW_AT_call_return_pc (the PC the call returns to) if it's
3759  // available. It should only ever be unavailable for tail call edges, in
3760  // which case use LLDB_INVALID_ADDRESS.
3761  addr_t return_pc = child.GetAttributeValueAsAddress(DW_AT_call_return_pc,
3763 
3764  LLDB_LOG(log, "CollectCallEdges: Found call origin: {0} (retn-PC: {1:x})",
3765  call_origin.GetPubname(), return_pc);
3766  call_edges.emplace_back(call_origin.GetMangledName(), return_pc);
3767  }
3768  return call_edges;
3769 }
3770 
3771 std::vector<lldb_private::CallEdge>
3773  DWARFDIE func_die = GetDIEFromUID(func_id.GetID());
3774  if (func_die.IsValid())
3775  return CollectCallEdges(func_die);
3776  return {};
3777 }
3778 
3779 // PluginInterface protocol
3781 
3783 
3785 
3788  ClangASTContext *clang = llvm::dyn_cast_or_null<ClangASTContext>(ts);
3789  if (!clang)
3790  return;
3791  clang->Dump(s);
3792 }
3793 
3795  if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired()) {
3796  lldb::ModuleSP module_sp(m_debug_map_module_wp.lock());
3797  if (module_sp) {
3798  SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
3799  if (sym_vendor)
3801  (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
3802  }
3803  }
3804  return m_debug_map_symfile;
3805 }
3806 
3810  return DWARFExpression::LocLists;
3811  return DWARFExpression::RegularLocationList;
3812 }
3813 
3815  llvm::call_once(m_dwp_symfile_once_flag, [this]() {
3816  ModuleSpec module_spec;
3817  module_spec.GetFileSpec() = m_obj_file->GetFileSpec();
3818  module_spec.GetSymbolFileSpec() =
3819  FileSpec(m_obj_file->GetFileSpec().GetPath() + ".dwp");
3820 
3821  FileSpecList search_paths = Target::GetDefaultDebugFileSearchPaths();
3822  FileSpec dwp_filespec =
3823  Symbols::LocateExecutableSymbolFile(module_spec, search_paths);
3824  if (FileSystem::Instance().Exists(dwp_filespec)) {
3826  dwp_filespec);
3827  }
3828  });
3829  return m_dwp_symfile.get();
3830 }
DWARFDIE GetFirstChild() const
Definition: DWARFDIE.cpp:98
DWARFDIE GetDIE(const DIERef &die_ref)
std::shared_ptr< std::set< DIERef > > DIERefSetSP
DWARFDIE GetDeclContextDIEContainingDIE(const DWARFDIE &die)
DWARFBaseDIE GetUnitDIEOnly()
Definition: DWARFUnit.h:122
bool ResolveFunction(const DWARFDIE &die, bool include_inlines, lldb_private::SymbolContextList &sc_list)
Address & GetAddressRef()
Definition: Symbol.h:56
virtual const lldb_private::DWARFDataExtractor & get_debug_addr_data()
A class to manage flag bits.
Definition: Debugger.h:82
bool CompleteType(const CompilerType &compiler_type)
ConstString & GetFilename()
Filename string get accessor.
Definition: FileSpec.cpp:369
virtual const lldb_private::DWARFDataExtractor & get_debug_str_offsets_data()
lldb::addr_t LinkOSOFileAddress(SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr)
Convert a .o file "file address" to an executable "file address".
static void DebuggerInitialize(lldb_private::Debugger &debugger)
uint32_t GetPluginVersion() override
static uint32_t GetOSOIndexFromUserID(lldb::user_id_t uid)
DWARFASTParser * GetDWARFParser() const
void AddRange(const Range &range)
Add a new offset range to this block.
Definition: Block.cpp:325
static void ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State &state, void *userData)
size_t ParseFunctions(lldb_private::CompileUnit &comp_unit) override
lldb::LanguageType GetLanguage() const
lldb::ModuleSP CalculateSymbolContextModule() override
Definition: Function.cpp:345
uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr, lldb::SymbolContextItem resolve_scope, lldb_private::SymbolContext &sc) override
dw_addr_t GetBaseAddress() const
Definition: DWARFUnit.h:101
uint8_t GetSize(uint32_t index) const
#define UNUSED_IF_ASSERT_DISABLED(x)
Definition: lldb-defines.h:134
void SetFile(const FileSpec &file_spec)
Set accessor for the declaration file specification.
Definition: Declaration.h:190
Defines a list of symbol context objects.
void SetColumn(uint32_t column)
Set accessor for the declaration column number.
Definition: Declaration.h:180
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
#define DIE_IS_BEING_PARSED
const char * AsCString() const
const char * GetQualifiedName() const
const char * AsCString(const char *value_if_empty=nullptr) const
Get the string value as a C string.
Definition: ConstString.h:224
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
virtual lldb::TypeSP FindCompleteObjCDefinitionTypeForDIE(const DWARFDIE &die, lldb_private::ConstString type_name, bool must_be_implementation)
SymbolFileDWARF * GetDWARF() const
bool CanImport(const CompilerType &type)
size_t GetAttributes(DWARFAttributes &attributes, uint32_t depth=0) const
virtual bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset, DWARFRangeList &range_list) const =0
virtual lldb::CompUnitSP ParseCompileUnit(DWARFUnit *dwarf_cu, uint32_t cu_idx)
#define lldbassert(x)
Definition: LLDBAssert.h:15
bool GetStartAddress(Address &addr)
Definition: Block.cpp:307
static bool ParseStatementTable(const lldb_private::DWARFDataExtractor &debug_line_data, lldb::offset_t *offset_ptr, State::Callback callback, void *userData, DWARFUnit *dwarf_cu)
DWARFUnit * GetCU() const
Definition: DWARFBaseDIE.h:52
Defines a symbol context baton that can be handed other debug core functions.
Definition: SymbolContext.h:33
std::recursive_mutex & GetModuleMutex() const override
Symbols file subclasses should override this to return the Module that owns the TypeSystem that this ...
virtual FileSpec & GetFileSpec()
Get accessor to the object file specification.
Definition: ObjectFile.h:269
DWARFDataSegment m_data_debug_line_str
DWARFDIE GetDIE(dw_offset_t die_offset)
Definition: DWARFUnit.cpp:530
static lldb_private::ConstString GetPluginNameStatic()
"lldb/Expression/DWARFExpression.h" Encapsulates a DWARF location expression and interprets it...
virtual void LoadSectionData(lldb::SectionType sect_type, lldb_private::DWARFDataExtractor &data)
DWARFASTParser * GetDWARFParser() override
bool OffsetIs64Bit() const
const lldb_private::DWARFDataExtractor & get_debug_line_data()
lldb_private::CompilerDeclContext GetContainingDeclContext() const
Definition: DWARFDIE.cpp:357
uint64_t GetAttributeValueAsReference(const dw_attr_t attr, uint64_t fail_value) const
virtual void SetSymbolFile(SymbolFile *sym_file)
Definition: TypeSystem.h:94
std::unique_ptr< lldb_private::DWARFIndex > m_index
void SetUserData(void *d)
Definition: DWARFUnit.cpp:564
llvm::Error Error
size_t AppendDIEsWithTag(const dw_tag_t tag, std::vector< DWARFDIE > &dies, uint32_t depth=UINT32_MAX) const
Definition: DWARFUnit.cpp:351
DWARFDataSegment m_data_debug_ranges
static void Terminate()
std::vector< ConstString > path
Something like "Module.Submodule".
Definition: SourceModule.h:20
bool ParseLineTable(lldb_private::CompileUnit &comp_unit) override
SymbolFile * GetSymbolFile()
Definition: SymbolVendor.h:125
lldb_private::Function * ParseFunction(lldb_private::CompileUnit &comp_unit, const DWARFDIE &die)
void AddChild(const lldb::BlockSP &child_block_sp)
Add a child to this object.
Definition: Block.cpp:373
const lldb_private::DWARFDataExtractor & get_apple_namespaces_data()
std::vector< lldb_private::CallEdge > ParseCallEdgesInFunction(UserID func_id) override
lldb::user_id_t GetID() const
Get accessor for the user ID.
Definition: UserID.h:49
lldb::LanguageType GetLanguage() const
const lldb_private::DWARFDataExtractor & get_debug_frame_data()
dw_form_t Form() const
A mix in class that contains a generic user ID.
Definition: UserID.h:33
DWARFDIE GetDIEFromUID(lldb::user_id_t uid)
A file utility class.
Definition: FileSpec.h:55
~SymbolFileDWARF() override
SymbolContextScope * GetSymbolContextScope() const
Definition: Variable.h:51
"lldb/Utility/RegularExpression.h" A C++ wrapper class for regex.
lldb_private::RangeDataVector< lldb::addr_t, lldb::addr_t, lldb_private::Variable * > GlobalVariableMap
uint32_t GetNumCompileUnits() override
uint32_t FindGlobalVariables(lldb_private::ConstString name, const lldb_private::CompilerDeclContext *parent_decl_ctx, uint32_t max_matches, lldb_private::VariableList &variables) override
virtual bool CompleteTypeFromDWARF(const DWARFDIE &die, lldb_private::Type *type, lldb_private::CompilerType &compiler_type)=0
DWARFDIE GetParent() const
Definition: DWARFDIE.cpp:90
void Dump(lldb_private::Stream &s) override
A class that describes a function.
Definition: Function.h:323
static const char * GetPluginDescriptionStatic()
void InitializeObject() override
Initialize the SymbolFile object.
A timer class that simplifies common timing metrics.
Definition: Timer.h:23
DWARFDataSegment m_data_gnu_debugaltlink
lldb::addr_t GetFileAddress() const
Get the file address.
Definition: Address.cpp:272
lldb::LanguageType GetLanguage()
A plug-in interface definition class for object file parsers.
Definition: ObjectFile.h:58
CompileUnit * comp_unit
The CompileUnit for a given query.
uint64_t GetAttributeValueAsAddress(const dw_attr_t attr, uint64_t fail_value) const
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
lldb_private::CompilerDecl GetDecl() const
Definition: DWARFDIE.cpp:341
lldb::VariableListSP GetBlockVariableList(bool can_create)
Get the variable list for this block only.
Definition: Block.cpp:387
lldb_private::CompilerDeclContext FindNamespace(lldb_private::ConstString name, const lldb_private::CompilerDeclContext *parent_decl_ctx) override
const char * GetQualifiedName(std::string &storage) const
Definition: DWARFDIE.cpp:180
uint64_t dw_addr_t
Definition: dwarf.h:26
llvm::once_flag m_dwp_symfile_once_flag
void GetMangledNamesForFunction(const std::string &scope_qualified_name, std::vector< lldb_private::ConstString > &mangled_names) override
static bool SupportedVersion(uint16_t version)
lldb_private::Symbol * GetObjCClassSymbol(lldb_private::ConstString objc_class_name)
Definition: DIERef.h:18
void AppendLineEntryToSequence(LineSequence *sequence, lldb::addr_t file_addr, uint32_t line, uint16_t column, uint16_t file_idx, bool is_start_of_statement, bool is_start_of_basic_block, bool is_prologue_end, bool is_epilogue_begin, bool is_terminal_entry)
Definition: LineTable.cpp:59
lldb_private::TypeSystem * GetTypeSystemForLanguage(lldb::LanguageType language) override
static constexpr PropertyDefinition g_properties[]
Definition: Debugger.cpp:198
DWARFDebugRangesBase * DebugRanges()
lldb::LanguageType ParseLanguage(lldb_private::CompileUnit &comp_unit) override
lldb::SectionSP FindSectionByType(lldb::SectionType sect_type, bool check_children, size_t start_idx=0) const
Definition: Section.cpp:545
const char * GetData() const
Definition: StreamString.h:43
lldb_private::ClangASTImporter & GetClangASTImporter()
void SetVariableList(lldb::VariableListSP &variable_list_sp)
Set accessor for the variable list.
Definition: Block.h:351
A class that describes a single lexical block.
Definition: Block.h:41
size_t GetTypes(lldb_private::SymbolContextScope *sc_scope, lldb::TypeClass type_mask, lldb_private::TypeList &type_list) override
lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override
const char * GetTagAsCString() const
#define LLDB_LOG(log,...)
Definition: Log.h:209
static DWARFDIE GetParentSymbolContextDIE(const DWARFDIE &die)
lldb::LanguageType GetLanguageType()
Definition: DWARFUnit.cpp:671
lldb::FunctionSP FindFunctionByUID(lldb::user_id_t uid)
Finds a function by user ID.
lldb::CompUnitSP GetCompileUnit(SymbolFileDWARF *oso_dwarf)
#define LLDB_LOG_ERROR(log, error,...)
Definition: Log.h:225
void SetDebugMacros(const DebugMacrosSP &debug_macros)
DWARFUnit * GetCompileUnitAtIndex(lldb::user_id_t idx)
static bool IsDataForm(const dw_form_t form)
bool Boolean() const
lldb::ModuleSP GetModule() const
Get const accessor for the module pointer.
Definition: ModuleChild.cpp:27
virtual std::unique_ptr< SymbolFileDWARFDwo > GetDwoSymbolFileForCompileUnit(DWARFUnit &dwarf_cu, const DWARFDebugInfoEntry &cu_die)
#define DW_INVALID_INDEX
Definition: dwarf.h:35
bool HasForwardDeclForClangType(const lldb_private::CompilerType &compiler_type)
A class that describes a compilation unit.
Definition: CompileUnit.h:35
lldb_private::FileSpec::Style GetPathStyle()
Definition: DWARFUnit.cpp:696
lldb::offset_t GetFileSize() const
Definition: Section.h:154
static llvm::Optional< lldb_private::SymbolFile::ArrayInfo > ParseChildArrayInfo(const DWARFDIE &parent_die, const lldb_private::ExecutionContext *exe_ctx=nullptr)
BaseType GetMinRangeBase(BaseType fail_value) const
Definition: RangeMap.h:209
DebugMacrosMap m_debug_macros_map
DWARFDataSegment m_data_debug_abbrev
ConstString GetFileNameExtension() const
Extract the extension of the file.
Definition: FileSpec.cpp:412
virtual lldb_private::CompilerDeclContext GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die)=0
bool m_fetched_external_modules
void SetLineTable(LineTable *line_table)
Set the line table for the compile unit.
std::vector< DIERef > DIEArray
Definition: DIERef.h:51
const lldb_private::DWARFDataExtractor & get_apple_names_data()
uint32_t GetSize() const
Get accessor for a symbol context list size.
DWARFDataSegment m_data_debug_info
Function * function
The Function for a given query.
llvm::Optional< ArrayInfo > GetDynamicArrayInfoForUID(lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) override
If type_uid points to an array type, return its characteristics.
#define ASSERT_MODULE_LOCK(expr)
Definition: SymbolFile.h:28
DWARFDIE DIE()
Definition: DWARFUnit.h:124
bool Supports_DW_AT_APPLE_objc_complete_type(SymbolFileDWARF *skip_dwarf_oso)
lldb::addr_t GetOffset() const
Get the section relative offset value.
Definition: Address.h:317
DWARFDataSegment m_data_debug_addr
virtual size_t ReadSectionData(Section *section, lldb::offset_t section_offset, void *dst, size_t dst_len)
Definition: ObjectFile.cpp:488
lldb_private::ConstString GetPluginName() override
dw_offset_t die_offset
Definition: DIERef.h:48
SymbolFileDWARFDebugMap * GetDebugMapSymfile()
lldb::opaque_compiler_type_t GetOpaqueQualType() const
Definition: CompilerType.h:165
virtual CompileUnit * CalculateSymbolContextCompileUnit()
virtual lldb_private::TypeSystem * GetTypeSystemForLanguage(lldb::LanguageType language)
Definition: SymbolFile.cpp:89
lldb_private::CompilerDeclContext GetDeclContextContainingUID(lldb::user_id_t uid) override
#define UINT32_MAX
Definition: lldb-defines.h:31
lldb::VariableSP GetVariableAtIndex(size_t idx) const
const char * GetAttributeValueAsString(const dw_attr_t attr, const char *fail_value) const
ConstString GetName()
Definition: Type.cpp:275
ValueType GetValueType() const
Definition: Value.cpp:114
DWARFDataSegment m_data_debug_frame
std::unique_ptr< DWARFDebugInfo > m_info
DWARFDataSegment m_data_debug_line
SymbolFileDWARFDwp * GetDwpSymbolFile()
DWARFDataSegment m_data_debug_str_offsets
static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val)
Definition: DWARFUnit.cpp:658
llvm::StringRef GetText() const
Access the regular expression text.
DWARFDataSegment m_data_debug_str
llvm::Expected< DWARFDebugAranges & > GetCompileUnitAranges()
bool DIEDeclContextsMatch(const DWARFDIE &die1, const DWARFDIE &die2)
bool ExtractFormValueAtIndex(uint32_t i, DWARFFormValue &form_value) const
const char * GetPubname() const
Definition: DWARFDIE.cpp:173
#define LLDB_INVALID_ADDRESS
Invalid value definitions.
Definition: lldb-defines.h:85
virtual DIEToVariableSP & GetDIEToVariable()
static bool IsBlockForm(const dw_form_t form)
uint64_t user_id_t
Definition: lldb-types.h:84
LanguageType
Programming language type.
#define DEBUG_PRINTF(fmt,...)
#define DWARF_LOG_LOOKUPS
size_t ParseTypes(lldb_private::CompileUnit &comp_unit) override
void GetUnsupportedForms(std::set< dw_form_t > &invalid_forms) const
uint64_t offset_t
Definition: lldb-types.h:87
void AppendPathComponent(llvm::StringRef component)
Definition: FileSpec.cpp:463
dw_offset_t GetNextCompileUnitOffset() const
Definition: DWARFUnit.cpp:369
lldb_private::Type * ResolveTypeUID(lldb::user_id_t type_uid) override
void ParseDeclsForContext(lldb_private::CompilerDeclContext decl_ctx) override
void Clear()
Clears the object state.
Entry * FindEntryThatContains(B addr)
Definition: RangeMap.h:737
Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: Logging.cpp:57
lldb_private::Type * ResolveType(const DWARFDIE &die, bool assert_not_being_parsed=true, bool resolve_function_context=false)
void Insert(const lldb::TypeSP &type)
Definition: TypeList.cpp:27
DWARFDebugInfoEntry * GetParent()
void Clear(bool clear_target)
Clear the object&#39;s state.
uint64_t GetAttributeValueAsUnsigned(SymbolFileDWARF *dwarf2Data, const DWARFUnit *cu, const dw_attr_t attr, uint64_t fail_value, bool check_specification_or_abstract_origin=false) const
lldb::TypeSP ParseType(const lldb_private::SymbolContext &sc, const DWARFDIE &die, bool *type_is_new)
TypeSystem * GetTypeSystem() const
Definition: CompilerType.h:150
void SetInlinedFunctionInfo(const char *name, const char *mangled, const Declaration *decl_ptr, const Declaration *call_decl_ptr)
Set accessor for any inlined function information.
Definition: Block.cpp:380
friend struct DIERef
uint32_t FindTypes(lldb_private::ConstString name, const lldb_private::CompilerDeclContext *parent_decl_ctx, bool append, uint32_t max_matches, llvm::DenseSet< lldb_private::SymbolFile *> &searched_symbol_files, lldb_private::TypeMap &types) override
lldb::SectionSP FindSectionByName(ConstString section_dstr) const
Definition: Section.cpp:505
const lldb_private::DWARFDataExtractor & get_debug_rnglists_data()
const lldb_private::DWARFDataExtractor & get_apple_objc_data()
bool DeclContextMatchesThisSymbolFile(const lldb_private::CompilerDeclContext *decl_ctx)
#define DWARF_LOG_DEBUG_INFO
Block & GetBlock(bool can_create)
Get accessor for the block list.
Definition: Function.cpp:280
size_t ParseVariables(const lldb_private::SymbolContext &sc, const DWARFDIE &orig_die, const lldb::addr_t func_low_pc, bool parse_siblings, bool parse_children, lldb_private::VariableList *cc_variable_list=NULL)
uint64_t GetAttributeValueAsUnsigned(const dw_attr_t attr, uint64_t fail_value) const
virtual SectionList * GetSectionList(bool update_module_section_list=true)
Gets the section list for the currently selected architecture (and object for archives).
Definition: ObjectFile.cpp:605
A line table class.
Definition: LineTable.h:37
void PreloadSymbols() override
const lldb_private::DWARFDataExtractor & get_debug_loc_data()
llvm::StringRef GetString() const
lldb::ModuleWP m_debug_map_module_wp
static lldb_private::SymbolFile * CreateInstance(lldb_private::ObjectFile *obj_file)
void MakeAbsolute(const FileSpec &dir)
Make the FileSpec absolute by treating it relative to dir.
Definition: FileSpec.cpp:522
unsigned long long ULongLong(unsigned long long fail_value=0) const
Definition: Scalar.cpp:1566
std::unique_ptr< DWARFDebugRangesBase > m_ranges
bool FixupAddress(lldb_private::Address &addr)
virtual ClangTypeToDIE & GetForwardDeclClangTypeToDie()
virtual lldb::TypeSP FindDefinitionTypeForDWARFDeclContext(const DWARFDeclContext &die_decl_ctx)
CompileUnit * GetCompileUnit()
Get accessor for the compile unit that owns this function.
Definition: Function.cpp:297
size_t GetSize() const
Definition: RangeMap.h:241
static void ReadMacroEntries(const lldb_private::DWARFDataExtractor &debug_macro_data, const lldb_private::DWARFDataExtractor &debug_str_data, const bool offset_is_64_bit, lldb::offset_t *sect_offset, SymbolFileDWARF *sym_file_dwarf, lldb_private::DebugMacrosSP &debug_macros_sp)
void Clear()
Clear the object&#39;s state.
uint32_t line
The source line number, or zero if there is no line number information.
Definition: LineEntry.h:154
bool ParseDebugMacros(lldb_private::CompileUnit &comp_unit) override
bool ValueIsAddress() const
Definition: Symbol.cpp:114
DWARFDIE GetSibling() const
Definition: DWARFDIE.cpp:106
lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type
FileSpecList & GetSupportFiles()
Get the compile unit&#39;s support file list.
virtual const lldb_private::DWARFDataExtractor & get_debug_abbrev_data()
const lldb_private::DWARFDataExtractor & get_gnu_debugaltlink()
uint32_t FindLineEntryIndexByFileIndex(uint32_t start_idx, uint32_t file_idx, uint32_t line, bool exact, LineEntry *line_entry_ptr)
Find a line entry index that has a matching file index and source line number.
Definition: LineTable.cpp:319
uint64_t Unsigned() const
void FinalizeRanges()
Definition: Block.cpp:320
DIERef GetDIERef() const
bool Supports_DW_AT_APPLE_objc_complete_type(DWARFUnit *cu)
llvm::StringRef GetStringRef() const
Get the string value as a llvm::StringRef.
Definition: ConstString.h:233
#define DWARF_LOG_TYPE_COMPLETION
const lldb_private::DWARFDataExtractor & DebugLocData()
SymbolFileDWARF * GetSymbolFileByOSOIndex(uint32_t oso_idx)
const char * GetMangledName() const
Definition: DWARFDIE.cpp:166
ExternalTypeModuleMap m_external_type_modules
virtual lldb_private::DWARFExpression::LocationListFormat GetLocationListFormat() const
SymbolFileDWARFDebugMap * m_debug_map_symfile
size_t Printf(const char *format,...) __attribute__((format(printf
Output printf formatted output to the stream.
Definition: Stream.cpp:106
void Append(const SymbolContext &sc)
Append a new symbol context to the list.
uint32_t GetResolvedMask() const
virtual std::vector< DWARFDIE > GetDIEForDeclContext(lldb_private::CompilerDeclContext decl_context)=0
std::unique_ptr< SymbolFileDWARFDwp > m_dwp_symfile
virtual DWARFUnit * GetBaseCompileUnit()
std::shared_ptr< DebugMacros > DebugMacrosSP
Definition: DebugMacros.h:21
std::unique_ptr< GlobalVariableMap > m_global_aranges_up
lldb::VariableListSP GetVariableList(bool can_create)
Get the variable list for a compile unit.
uint8_t GetAddressByteSize() const
Definition: DWARFUnit.h:100
bool IsValid() const
Check if the object state is valid.
Definition: Address.h:343
A section + offset based address class.
Definition: Address.h:80
DWARFDebugInfo * DebugInfo()
DWARFDataSegment m_data_debug_loc
lldb_private::TypeList * GetTypeList() override
LineTable * GetLineTable()
Get the line table for the compile unit.
Symbol * FindFirstSymbolWithNameAndType(ConstString name, lldb::SymbolType symbol_type, Debug symbol_debug_type, Visibility symbol_visibility)
Definition: Symtab.cpp:824
FileSpec & GetFileSpec()
Definition: ModuleSpec.h:75
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:328
const lldb_private::FileSpec & GetCompilationDirectory()
Definition: DWARFUnit.cpp:702
dw_offset_t GetOffset() const
Definition: DWARFUnit.h:76
static ConstString GetDWARFMachOSegmentName()
DWARFDIE GetReferencedDIE(const dw_attr_t attr) const
Definition: DWARFDIE.cpp:114
void Clear()
Definition: DWARFBaseDIE.h:71
std::vector< DWARFDIE > GetDeclContextDIEs() const
Definition: DWARFDIE.cpp:202
const Entry & GetEntryRef(size_t i) const
Definition: RangeMap.h:249
const lldb_private::DWARFDataExtractor & get_apple_types_data()
UniqueDWARFASTTypeMap & GetUniqueDWARFASTTypeMap()
dw_attr_t AttributeAtIndex(uint32_t i) const
uint64_t GetByteSize() const
Get the number of bytes contained in this object.
UniqueDWARFASTTypeMap m_unique_ast_type_map
virtual TypeList * GetTypeList()
Definition: SymbolFile.cpp:83
static lldb_private::FileSpecList GetSymlinkPaths()
bool ParseIsOptimized(lldb_private::CompileUnit &comp_unit) override
virtual DIEToTypePtr & GetDIEToType()
SymbolFileDWARF(lldb_private::ObjectFile *ofile)
const lldb_private::DWARFDataExtractor & get_debug_loclists_data()
lldb_private::DWARFContext m_context
ArchSpec & GetArchitecture()
Definition: ModuleSpec.h:111
static FixedFormSizes GetFixedFormSizesForAddressSize(uint8_t addr_size)
ObjectFile * m_obj_file
Definition: SymbolFile.h:231
void GetDWARFDeclContext(DWARFDeclContext &dwarf_decl_ctx) const
Definition: DWARFDIE.cpp:216
lldb_private::LineTable * LinkOSOLineTable(SymbolFileDWARF *oso_symfile, lldb_private::LineTable *line_table)
Given a line table full of lines with "file addresses" that are for a .o file represented by oso_symf...
size_t GetNumCompileUnits()
bool FindLineEntryByAddress(const Address &so_addr, LineEntry &line_entry, uint32_t *index_ptr=nullptr)
Find a line entry that contains the section offset address so_addr.
Definition: LineTable.cpp:170
virtual void CalculateSymbolContext(SymbolContext *sc)=0
Reconstruct the object&#39;s symbol context into sc.
DWARFUnit * GetCompileUnitAtOffset(dw_offset_t cu_offset, uint32_t *idx_ptr=NULL)
virtual lldb::LanguageType GetMinimumLanguage(lldb::opaque_compiler_type_t type)=0
DWARFDataSegment m_data_debug_rnglists
const char * GetAttributeValueAsString(SymbolFileDWARF *dwarf2Data, const DWARFUnit *cu, const dw_attr_t attr, const char *fail_value, bool check_specification_or_abstract_origin=false) const
GlobalVariableMap & GetGlobalAranges()
ConstString & GetDirectory()
Directory string get accessor.
Definition: FileSpec.cpp:363
bool CompleteType(lldb_private::CompilerType &compiler_type) override
bool IsContainedInLookup(CompilerDeclContext other) const
Check if the given other decl context is contained in the lookup of this decl context (for example be...
bool ClassOrStructIsVirtual(const DWARFDIE &die)
bool Evaluate(ExecutionContextScope *exe_scope, lldb::addr_t loclist_base_load_addr, const Value *initial_value_ptr, const Value *object_address_ptr, Value &result, Status *error_ptr) const
Wrapper for the static evaluate function that accepts an ExecutionContextScope instead of an Executio...
bool GetIsOptimized()
Definition: DWARFUnit.cpp:682
lldb::ModuleSP GetDWOModule(lldb_private::ConstString name)
bool Supports_DW_AT_APPLE_objc_complete_type()
Definition: DWARFUnit.cpp:570
uint64_t addr_t
Definition: lldb-types.h:83
char * strcasestr(const char *s, const char *find)
Definition: Windows.cpp:72
bool GetFunction(const DWARFDIE &die, lldb_private::SymbolContext &sc)
virtual DWARFASTParser * GetDWARFParser()
Definition: TypeSystem.h:88
DWARFDebugAbbrev * DebugAbbrev()
virtual size_t FindTypes(ConstString name, const CompilerDeclContext *parent_decl_ctx, bool append, size_t max_matches, llvm::DenseSet< lldb_private::SymbolFile *> &searched_symbol_files, TypeMap &types)
bool LinkOSOAddress(lldb_private::Address &addr)
Convert addr from a .o file address, to an executable address.
void SetDidParseVariables(bool b, bool set_children)
Definition: Block.cpp:486
DWARFDataSegment m_data_apple_types
bool InsertUnique(const lldb::TypeSP &type)
Definition: TypeMap.cpp:47
std::unique_ptr< SymbolFileDWARFDwo > GetSymbolFileForDwoId(DWARFUnit *dwarf_cu, uint64_t dwo_id)
A uniqued constant string class.
Definition: ConstString.h:38
friend class DWARFDIE
LineSequence * CreateLineSequenceContainer()
Definition: LineTable.cpp:55
const lldb_private::DWARFDataExtractor & get_debug_line_str_data()
dw_offset_t DIEOffsetAtIndex(uint32_t i) const
virtual lldb_private::Function * ParseFunctionFromDWARF(lldb_private::CompileUnit &comp_unit, const DWARFDIE &die)=0
Unknown or invalid language value.
const char * GetCString() const
Get the string value as a C string.
Definition: ConstString.h:247
FileSpec & GetSymbolFileSpec()
Definition: ModuleSpec.h:99
DWARFDataSegment m_data_apple_names
virtual UniqueDWARFASTTypeMap & GetUniqueDWARFASTTypeMap()
const lldb_private::DWARFDataExtractor & get_debug_types_data()
void SetVariableList(lldb::VariableListSP &variable_list_sp)
Set accessor for the variable list.
virtual lldb_private::CompilerDecl GetDeclForUIDFromDWARF(const DWARFDIE &die)=0
bool AddVariableIfUnique(const lldb::VariableSP &var_sp)
lldb::ModuleSP module_sp
The Module for a given query.
SymbolFileDWARF * GetSymbolFileDWARF() const
Definition: DWARFUnit.cpp:590
LineEntry line_entry
The LineEntry for a given query.
void * GetUserData() const
Definition: DWARFUnit.cpp:562
char * basename(char *path)
DWARFDIE GetDIE(dw_offset_t die_offset) const
Definition: DWARFDIE.cpp:124
Definition: SBAddress.h:15
lldb_private::DWARFDataExtractor m_data
uint32_t GetSize() const
bool IsValid() const
Definition: DWARFBaseDIE.h:43
DWARFDataSegment m_data_debug_macro
dw_tag_t Tag() const
ObjectFile * GetObjectFile()
Definition: SymbolFile.h:213
lldb::VariableSP ParseVariableDIE(const lldb_private::SymbolContext &sc, const DWARFDIE &die, const lldb::addr_t func_low_pc)
virtual lldb_private::CompilerDeclContext GetDeclContextForUIDFromDWARF(const DWARFDIE &die)=0
bool HasChildren() const
uint32_t GetSize() const
Definition: TypeMap.cpp:88
#define DW_INVALID_OFFSET
Definition: dwarf.h:34
bool ParseSupportFiles(lldb_private::CompileUnit &comp_unit, lldb_private::FileSpecList &support_files) override
SectionList & GetChildren()
Definition: Section.h:135
virtual lldb::TypeSP ParseTypeFromDWARF(const lldb_private::SymbolContext &sc, const DWARFDIE &die, lldb_private::Log *log, bool *type_is_new_ptr)=0
static std::vector< lldb_private::CallEdge > CollectCallEdges(DWARFDIE function_die)
Collect call graph edges present in a function DIE.
static std::unique_ptr< SymbolFileDWARFDwp > Create(lldb::ModuleSP module_sp, const lldb_private::FileSpec &file_spec)
static bool DIEInDeclContext(const lldb_private::CompilerDeclContext *parent_decl_ctx, const DWARFDIE &die)
uint32_t CalculateAbilities() override
lldb::TypeSP GetTypeForDIE(const DWARFDIE &die, bool resolve_function_context=false)
BaseType GetRangeEnd() const
Definition: RangeMap.h:62
Address & GetBaseAddress()
Get accessor for the base address of the range.
Definition: AddressRange.h:220
const lldb_private::DWARFDataExtractor & get_debug_macro_data()
lldb::VariableSP RemoveVariableAtIndex(size_t idx)
const DWARFUnit * CompileUnitAtIndex(uint32_t i) const
SymbolFileDWARF * GetDWARFForUID(lldb::user_id_t uid)
bool ParseImportedModules(const lldb_private::SymbolContext &sc, std::vector< lldb_private::SourceModule > &imported_modules) override
lldb_private::Type * ResolveType() const
Definition: DWARFDIE.cpp:187
virtual DWARFDIE GetDIE(const DIERef &die_ref)
Variable * variable
The global variable matching the given query.
lldb_private::CompilerDecl GetDeclForUID(lldb::user_id_t uid) override
bool IsRelative() const
Returns true if the filespec represents a relative path.
Definition: FileSpec.cpp:503
lldb_private::CompilerDeclContext GetDeclContextForUID(lldb::user_id_t uid) override
const lldb_private::DWARFDataExtractor & get_debug_ranges_data()
DWARFDataSegment m_data_apple_namespaces
void InsertSequence(LineSequence *sequence)
Definition: LineTable.cpp:95
void UpdateExternalModuleListIfNeeded()
void SetFile(llvm::StringRef path, Style style)
Change the file specified with a new path.
Definition: FileSpec.cpp:198
virtual size_t GetObjCMethodDIEOffsets(lldb_private::ConstString class_name, DIEArray &method_die_offsets)
Block * FindBlockByID(lldb::user_id_t block_id)
Definition: Block.cpp:112
lldb_private::ConstString GetQualifiedNameAsConstString() const
const Scalar & GetScalar() const
Definition: Value.h:178
const char * AsCString(const char *default_error_str="unknown error") const
Get the error string associated with the current error.
Definition: Status.cpp:130
size_t ParseBlocksRecursive(lldb_private::Function &func) override
void GetDeclContext(std::vector< lldb_private::CompilerContext > &context) const
Return this DIE&#39;s decl context as it is needed to look up types in Clang&#39;s -gmodules debug info forma...
Definition: DWARFDIE.cpp:225
lldb::SectionSP GetSection() const
Get const accessor for the section.
Definition: Address.h:410
const AddressRange & GetAddressRange()
Definition: Function.h:371
dw_offset_t GetOffset() const
virtual Symtab * GetSymtab()=0
Gets the symbol table for the currently selected architecture (and object for archives).
const char * GetName() const
static bool ParseSupportFiles(const lldb::ModuleSP &module_sp, const lldb_private::DWARFDataExtractor &debug_line_data, dw_offset_t stmt_list, lldb_private::FileSpecList &support_files, DWARFUnit *dwarf_cu)
void SetLine(uint32_t line)
Set accessor for the declaration line number.
Definition: Declaration.h:197
DWARFDataSegment m_data_debug_loclists
virtual const lldb_private::DWARFDataExtractor & get_debug_str_data()
void DumpClangAST(lldb_private::Stream &s) override
bool Supports_DW_AT_APPLE_objc_complete_type() const
const lldb_private::DWARFDataExtractor & GetData() const
SizeType GetByteSize() const
Definition: RangeMap.h:71
size_t GetPath(char *path, size_t max_path_length, bool denormalize=true) const
Extract the full path to the file.
Definition: FileSpec.cpp:376
const uint8_t * BlockData() const
A class that describes the declaration location of a lldb object.
Definition: Declaration.h:24
#define LIBLLDB_LOG_STEP
Definition: Logging.h:21
DWARFDIE LookupDeepestBlock(lldb::addr_t file_addr) const
Definition: DWARFDIE.cpp:146
SymbolFileDWARFDwo * GetDwoSymbolFile() const
Definition: DWARFUnit.cpp:767
uint32_t FindFunctions(lldb_private::ConstString name, const lldb_private::CompilerDeclContext *parent_decl_ctx, lldb::FunctionNameType name_type_mask, bool include_inlines, bool append, lldb_private::SymbolContextList &sc_list) override
Block * block
The Block for a given query.
lldb::user_id_t GetID() const
virtual const lldb_private::DWARFDataExtractor & get_debug_info_data()
bool IsEmpty() const
Test for empty string.
Definition: ConstString.h:340
virtual DWARFUnit * GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
"lldb/Symbol/SymbolContextScope.h" Inherit from this if your object is part of a symbol context and c...
DWARFDIE FindBlockContainingSpecification(const DIERef &func_die_ref, dw_offset_t spec_block_die_offset)
const lldb_private::DWARFDataExtractor & GetCachedSectionData(lldb::SectionType sect_type, DWARFDataSegment &data_segment)
const char * DW_TAG_value_to_name(uint32_t val)
size_t ParseVariablesForContext(const lldb_private::SymbolContext &sc) override
DWARFDataSegment m_data_apple_objc
static DWARFDebugMacroHeader ParseHeader(const lldb_private::DWARFDataExtractor &debug_macro_data, lldb::offset_t *offset)
NameToOffsetMap m_function_scope_qualified_name_map
AddressRange range
The section offset address range for this line entry.
Definition: LineEntry.h:150
std::unique_ptr< LineSequence > sequence_up
lldb_private::CompileUnit * GetCompUnitForDWARFCompUnit(DWARFUnit *dwarf_cu, uint32_t cu_idx=UINT32_MAX)
Information needed to import a source-language module.
Definition: SourceModule.h:18
std::set< lldb_private::Type * > TypeSet
DWARFDIE LookupAddress(const dw_addr_t address)
Definition: DWARFUnit.cpp:340
An error handling class.
Definition: Status.h:44
void Clear()
Clear the object&#39;s state.
Definition: Address.h:189
BaseType GetRangeBase() const
Definition: RangeMap.h:46
std::unique_ptr< DWARFDebugAbbrev > m_abbr
DWARFDataSegment m_data_debug_types
virtual bool SupportsLanguage(lldb::LanguageType language)=0
static void Initialize()