1 //===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "SymbolFileDWARF.h"
11 
12 // Other libraries and framework includes
13 #include "clang/AST/ASTConsumer.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/Decl.h"
16 #include "clang/AST/DeclGroup.h"
17 #include "clang/AST/DeclObjC.h"
18 #include "clang/AST/DeclTemplate.h"
19 #include "clang/Basic/Builtins.h"
20 #include "clang/Basic/IdentifierTable.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/SourceManager.h"
23 #include "clang/Basic/TargetInfo.h"
24 #include "clang/Basic/Specifiers.h"
25 #include "clang/Sema/DeclSpec.h"
26 
27 #include "llvm/Support/Casting.h"
28 
29 #include "lldb/Core/Module.h"
30 #include "lldb/Core/PluginManager.h"
31 #include "lldb/Core/RegularExpression.h"
32 #include "lldb/Core/Scalar.h"
33 #include "lldb/Core/Section.h"
34 #include "lldb/Core/StreamFile.h"
35 #include "lldb/Core/StreamString.h"
36 #include "lldb/Core/Timer.h"
37 #include "lldb/Core/Value.h"
38 
39 #include "lldb/Host/Host.h"
40 
41 #include "lldb/Symbol/Block.h"
42 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h"
43 #include "lldb/Symbol/CompileUnit.h"
44 #include "lldb/Symbol/LineTable.h"
45 #include "lldb/Symbol/ObjectFile.h"
46 #include "lldb/Symbol/SymbolVendor.h"
47 #include "lldb/Symbol/VariableList.h"
48 
49 #include "lldb/Target/ObjCLanguageRuntime.h"
50 #include "lldb/Target/CPPLanguageRuntime.h"
51 
52 #include "DWARFCompileUnit.h"
53 #include "DWARFDebugAbbrev.h"
54 #include "DWARFDebugAranges.h"
55 #include "DWARFDebugInfo.h"
56 #include "DWARFDebugInfoEntry.h"
57 #include "DWARFDebugLine.h"
58 #include "DWARFDebugPubnames.h"
59 #include "DWARFDebugRanges.h"
60 #include "DWARFDeclContext.h"
61 #include "DWARFDIECollection.h"
62 #include "DWARFFormValue.h"
63 #include "DWARFLocationList.h"
64 #include "LogChannelDWARF.h"
65 #include "SymbolFileDWARFDebugMap.h"
66 
67 #include <map>
68 
69 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
70 
71 #ifdef ENABLE_DEBUG_PRINTF
72 #include <stdio.h>
73 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
74 #else
75 #define DEBUG_PRINTF(fmt, ...)
76 #endif
77 
78 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1)
79 
80 using namespace lldb;
81 using namespace lldb_private;
82 
83 //static inline bool
84 //child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
85 //{
86 //    switch (tag)
87 //    {
88 //    default:
89 //        break;
90 //    case DW_TAG_subprogram:
91 //    case DW_TAG_inlined_subroutine:
92 //    case DW_TAG_class_type:
93 //    case DW_TAG_structure_type:
94 //    case DW_TAG_union_type:
95 //        return true;
96 //    }
97 //    return false;
98 //}
99 //
100 static AccessType
101 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
102 {
103     switch (dwarf_accessibility)
104     {
105         case DW_ACCESS_public:      return eAccessPublic;
106         case DW_ACCESS_private:     return eAccessPrivate;
107         case DW_ACCESS_protected:   return eAccessProtected;
108         default:                    break;
109     }
110     return eAccessNone;
111 }
112 
113 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
114 
115 class DIEStack
116 {
117 public:
118 
119     void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
120     {
121         m_dies.push_back (DIEInfo(cu, die));
122     }
123 
124 
125     void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
126     {
127         StreamString log_strm;
128         const size_t n = m_dies.size();
129         log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n);
130         for (size_t i=0; i<n; i++)
131         {
132             DWARFCompileUnit *cu = m_dies[i].cu;
133             const DWARFDebugInfoEntry *die = m_dies[i].die;
134             std::string qualified_name;
135             die->GetQualifiedName(dwarf, cu, qualified_name);
136             log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n",
137                              (uint64_t)i,
138                              die->GetOffset(),
139                              DW_TAG_value_to_name(die->Tag()),
140                              qualified_name.c_str());
141         }
142         log->PutCString(log_strm.GetData());
143     }
144     void Pop ()
145     {
146         m_dies.pop_back();
147     }
148 
149     class ScopedPopper
150     {
151     public:
152         ScopedPopper (DIEStack &die_stack) :
153             m_die_stack (die_stack),
154             m_valid (false)
155         {
156         }
157 
158         void
159         Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
160         {
161             m_valid = true;
162             m_die_stack.Push (cu, die);
163         }
164 
165         ~ScopedPopper ()
166         {
167             if (m_valid)
168                 m_die_stack.Pop();
169         }
170 
171 
172 
173     protected:
174         DIEStack &m_die_stack;
175         bool m_valid;
176     };
177 
178 protected:
179     struct DIEInfo {
180         DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
181             cu(c),
182             die(d)
183         {
184         }
185         DWARFCompileUnit *cu;
186         const DWARFDebugInfoEntry *die;
187     };
188     typedef std::vector<DIEInfo> Stack;
189     Stack m_dies;
190 };
191 #endif
192 
193 void
194 SymbolFileDWARF::Initialize()
195 {
196     LogChannelDWARF::Initialize();
197     PluginManager::RegisterPlugin (GetPluginNameStatic(),
198                                    GetPluginDescriptionStatic(),
199                                    CreateInstance);
200 }
201 
202 void
203 SymbolFileDWARF::Terminate()
204 {
205     PluginManager::UnregisterPlugin (CreateInstance);
206     LogChannelDWARF::Initialize();
207 }
208 
209 
210 const char *
211 SymbolFileDWARF::GetPluginNameStatic()
212 {
213     return "dwarf";
214 }
215 
216 const char *
217 SymbolFileDWARF::GetPluginDescriptionStatic()
218 {
219     return "DWARF and DWARF3 debug symbol file reader.";
220 }
221 
222 
223 SymbolFile*
224 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
225 {
226     return new SymbolFileDWARF(obj_file);
227 }
228 
229 TypeList *
230 SymbolFileDWARF::GetTypeList ()
231 {
232     if (GetDebugMapSymfile ())
233         return m_debug_map_symfile->GetTypeList();
234     return m_obj_file->GetModule()->GetTypeList();
235 
236 }
237 
238 //----------------------------------------------------------------------
239 // Gets the first parent that is a lexical block, function or inlined
240 // subroutine, or compile unit.
241 //----------------------------------------------------------------------
242 static const DWARFDebugInfoEntry *
243 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
244 {
245     const DWARFDebugInfoEntry *die;
246     for (die = child_die->GetParent(); die != NULL; die = die->GetParent())
247     {
248         dw_tag_t tag = die->Tag();
249 
250         switch (tag)
251         {
252         case DW_TAG_compile_unit:
253         case DW_TAG_subprogram:
254         case DW_TAG_inlined_subroutine:
255         case DW_TAG_lexical_block:
256             return die;
257         }
258     }
259     return NULL;
260 }
261 
262 
263 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
264     SymbolFile (objfile),
265     UserID (0),  // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
266     m_debug_map_module_wp (),
267     m_debug_map_symfile (NULL),
268     m_clang_tu_decl (NULL),
269     m_flags(),
270     m_data_debug_abbrev (),
271     m_data_debug_aranges (),
272     m_data_debug_frame (),
273     m_data_debug_info (),
274     m_data_debug_line (),
275     m_data_debug_loc (),
276     m_data_debug_ranges (),
277     m_data_debug_str (),
278     m_data_apple_names (),
279     m_data_apple_types (),
280     m_data_apple_namespaces (),
281     m_abbr(),
282     m_info(),
283     m_line(),
284     m_apple_names_ap (),
285     m_apple_types_ap (),
286     m_apple_namespaces_ap (),
287     m_apple_objc_ap (),
288     m_function_basename_index(),
289     m_function_fullname_index(),
290     m_function_method_index(),
291     m_function_selector_index(),
292     m_objc_class_selectors_index(),
293     m_global_index(),
294     m_type_index(),
295     m_namespace_index(),
296     m_indexed (false),
297     m_is_external_ast_source (false),
298     m_using_apple_tables (false),
299     m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
300     m_ranges(),
301     m_unique_ast_type_map ()
302 {
303 }
304 
305 SymbolFileDWARF::~SymbolFileDWARF()
306 {
307     if (m_is_external_ast_source)
308     {
309         ModuleSP module_sp (m_obj_file->GetModule());
310         if (module_sp)
311             module_sp->GetClangASTContext().RemoveExternalSource ();
312     }
313 }
314 
315 static const ConstString &
316 GetDWARFMachOSegmentName ()
317 {
318     static ConstString g_dwarf_section_name ("__DWARF");
319     return g_dwarf_section_name;
320 }
321 
322 UniqueDWARFASTTypeMap &
323 SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
324 {
325     if (GetDebugMapSymfile ())
326         return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
327     return m_unique_ast_type_map;
328 }
329 
330 ClangASTContext &
331 SymbolFileDWARF::GetClangASTContext ()
332 {
333     if (GetDebugMapSymfile ())
334         return m_debug_map_symfile->GetClangASTContext ();
335 
336     ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
337     if (!m_is_external_ast_source)
338     {
339         m_is_external_ast_source = true;
340         llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap (
341             new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
342                                                  SymbolFileDWARF::CompleteObjCInterfaceDecl,
343                                                  SymbolFileDWARF::FindExternalVisibleDeclsByName,
344                                                  SymbolFileDWARF::LayoutRecordType,
345                                                  this));
346         ast.SetExternalSource (ast_source_ap);
347     }
348     return ast;
349 }
350 
351 void
352 SymbolFileDWARF::InitializeObject()
353 {
354     // Install our external AST source callbacks so we can complete Clang types.
355     ModuleSP module_sp (m_obj_file->GetModule());
356     if (module_sp)
357     {
358         const SectionList *section_list = m_obj_file->GetSectionList();
359 
360         const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
361 
362         // Memory map the DWARF mach-o segment so we have everything mmap'ed
363         // to keep our heap memory usage down.
364         if (section)
365             m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
366     }
367     get_apple_names_data();
368     if (m_data_apple_names.GetByteSize() > 0)
369     {
370         m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
371         if (m_apple_names_ap->IsValid())
372             m_using_apple_tables = true;
373         else
374             m_apple_names_ap.reset();
375     }
376     get_apple_types_data();
377     if (m_data_apple_types.GetByteSize() > 0)
378     {
379         m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
380         if (m_apple_types_ap->IsValid())
381             m_using_apple_tables = true;
382         else
383             m_apple_types_ap.reset();
384     }
385 
386     get_apple_namespaces_data();
387     if (m_data_apple_namespaces.GetByteSize() > 0)
388     {
389         m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
390         if (m_apple_namespaces_ap->IsValid())
391             m_using_apple_tables = true;
392         else
393             m_apple_namespaces_ap.reset();
394     }
395 
396     get_apple_objc_data();
397     if (m_data_apple_objc.GetByteSize() > 0)
398     {
399         m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
400         if (m_apple_objc_ap->IsValid())
401             m_using_apple_tables = true;
402         else
403             m_apple_objc_ap.reset();
404     }
405 }
406 
407 bool
408 SymbolFileDWARF::SupportedVersion(uint16_t version)
409 {
410     return version == 2 || version == 3;
411 }
412 
413 uint32_t
414 SymbolFileDWARF::CalculateAbilities ()
415 {
416     uint32_t abilities = 0;
417     if (m_obj_file != NULL)
418     {
419         const Section* section = NULL;
420         const SectionList *section_list = m_obj_file->GetSectionList();
421         if (section_list == NULL)
422             return 0;
423 
424         uint64_t debug_abbrev_file_size = 0;
425         uint64_t debug_info_file_size = 0;
426         uint64_t debug_line_file_size = 0;
427 
428         section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
429 
430         if (section)
431             section_list = &section->GetChildren ();
432 
433         section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
434         if (section != NULL)
435         {
436             debug_info_file_size = section->GetFileSize();
437 
438             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
439             if (section)
440                 debug_abbrev_file_size = section->GetFileSize();
441             else
442                 m_flags.Set (flagsGotDebugAbbrevData);
443 
444             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
445             if (!section)
446                 m_flags.Set (flagsGotDebugArangesData);
447 
448             section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
449             if (!section)
450                 m_flags.Set (flagsGotDebugFrameData);
451 
452             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
453             if (section)
454                 debug_line_file_size = section->GetFileSize();
455             else
456                 m_flags.Set (flagsGotDebugLineData);
457 
458             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
459             if (!section)
460                 m_flags.Set (flagsGotDebugLocData);
461 
462             section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
463             if (!section)
464                 m_flags.Set (flagsGotDebugMacInfoData);
465 
466             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
467             if (!section)
468                 m_flags.Set (flagsGotDebugPubNamesData);
469 
470             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
471             if (!section)
472                 m_flags.Set (flagsGotDebugPubTypesData);
473 
474             section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
475             if (!section)
476                 m_flags.Set (flagsGotDebugRangesData);
477 
478             section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
479             if (!section)
480                 m_flags.Set (flagsGotDebugStrData);
481         }
482         else
483         {
484             const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString();
485             if (symfile_dir_cstr)
486             {
487                 if (strcasestr(symfile_dir_cstr, ".dsym"))
488                 {
489                     if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo)
490                     {
491                         // We have a dSYM file that didn't have a any debug info.
492                         // If the string table has a size of 1, then it was made from
493                         // an executable with no debug info, or from an executable that
494                         // was stripped.
495                         section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
496                         if (section && section->GetFileSize() == 1)
497                         {
498                             m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info.");
499                         }
500                     }
501                 }
502             }
503         }
504 
505         if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
506             abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
507 
508         if (debug_line_file_size > 0)
509             abilities |= LineTables;
510     }
511     return abilities;
512 }
513 
514 const DataExtractor&
515 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DataExtractor &data)
516 {
517     if (m_flags.IsClear (got_flag))
518     {
519         m_flags.Set (got_flag);
520         const SectionList *section_list = m_obj_file->GetSectionList();
521         if (section_list)
522         {
523             SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
524             if (section_sp)
525             {
526                 // See if we memory mapped the DWARF segment?
527                 if (m_dwarf_data.GetByteSize())
528                 {
529                     data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
530                 }
531                 else
532                 {
533                     if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
534                         data.Clear();
535                 }
536             }
537         }
538     }
539     return data;
540 }
541 
542 const DataExtractor&
543 SymbolFileDWARF::get_debug_abbrev_data()
544 {
545     return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
546 }
547 
548 const DataExtractor&
549 SymbolFileDWARF::get_debug_aranges_data()
550 {
551     return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
552 }
553 
554 const DataExtractor&
555 SymbolFileDWARF::get_debug_frame_data()
556 {
557     return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
558 }
559 
560 const DataExtractor&
561 SymbolFileDWARF::get_debug_info_data()
562 {
563     return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
564 }
565 
566 const DataExtractor&
567 SymbolFileDWARF::get_debug_line_data()
568 {
569     return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
570 }
571 
572 const DataExtractor&
573 SymbolFileDWARF::get_debug_loc_data()
574 {
575     return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
576 }
577 
578 const DataExtractor&
579 SymbolFileDWARF::get_debug_ranges_data()
580 {
581     return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
582 }
583 
584 const DataExtractor&
585 SymbolFileDWARF::get_debug_str_data()
586 {
587     return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
588 }
589 
590 const DataExtractor&
591 SymbolFileDWARF::get_apple_names_data()
592 {
593     return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
594 }
595 
596 const DataExtractor&
597 SymbolFileDWARF::get_apple_types_data()
598 {
599     return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
600 }
601 
602 const DataExtractor&
603 SymbolFileDWARF::get_apple_namespaces_data()
604 {
605     return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
606 }
607 
608 const DataExtractor&
609 SymbolFileDWARF::get_apple_objc_data()
610 {
611     return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
612 }
613 
614 
615 DWARFDebugAbbrev*
616 SymbolFileDWARF::DebugAbbrev()
617 {
618     if (m_abbr.get() == NULL)
619     {
620         const DataExtractor &debug_abbrev_data = get_debug_abbrev_data();
621         if (debug_abbrev_data.GetByteSize() > 0)
622         {
623             m_abbr.reset(new DWARFDebugAbbrev());
624             if (m_abbr.get())
625                 m_abbr->Parse(debug_abbrev_data);
626         }
627     }
628     return m_abbr.get();
629 }
630 
631 const DWARFDebugAbbrev*
632 SymbolFileDWARF::DebugAbbrev() const
633 {
634     return m_abbr.get();
635 }
636 
637 
638 DWARFDebugInfo*
639 SymbolFileDWARF::DebugInfo()
640 {
641     if (m_info.get() == NULL)
642     {
643         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
644         if (get_debug_info_data().GetByteSize() > 0)
645         {
646             m_info.reset(new DWARFDebugInfo());
647             if (m_info.get())
648             {
649                 m_info->SetDwarfData(this);
650             }
651         }
652     }
653     return m_info.get();
654 }
655 
656 const DWARFDebugInfo*
657 SymbolFileDWARF::DebugInfo() const
658 {
659     return m_info.get();
660 }
661 
662 DWARFCompileUnit*
663 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
664 {
665     DWARFDebugInfo* info = DebugInfo();
666     if (info)
667     {
668         if (GetDebugMapSymfile ())
669         {
670             // The debug map symbol file made the compile units for this DWARF
671             // file which is .o file with DWARF in it, and we should have
672             // only 1 compile unit which is at offset zero in the DWARF.
673             // TODO: modify to support LTO .o files where each .o file might
674             // have multiple DW_TAG_compile_unit tags.
675             return info->GetCompileUnit(0).get();
676         }
677         else
678         {
679             // Just a normal DWARF file whose user ID for the compile unit is
680             // the DWARF offset itself
681             return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get();
682         }
683     }
684     return NULL;
685 }
686 
687 
688 DWARFDebugRanges*
689 SymbolFileDWARF::DebugRanges()
690 {
691     if (m_ranges.get() == NULL)
692     {
693         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
694         if (get_debug_ranges_data().GetByteSize() > 0)
695         {
696             m_ranges.reset(new DWARFDebugRanges());
697             if (m_ranges.get())
698                 m_ranges->Extract(this);
699         }
700     }
701     return m_ranges.get();
702 }
703 
704 const DWARFDebugRanges*
705 SymbolFileDWARF::DebugRanges() const
706 {
707     return m_ranges.get();
708 }
709 
710 lldb::CompUnitSP
711 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
712 {
713     CompUnitSP cu_sp;
714     if (dwarf_cu)
715     {
716         CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
717         if (comp_unit)
718         {
719             // We already parsed this compile unit, had out a shared pointer to it
720             cu_sp = comp_unit->shared_from_this();
721         }
722         else
723         {
724             if (GetDebugMapSymfile ())
725             {
726                 // Let the debug map create the compile unit
727                 cu_sp = m_debug_map_symfile->GetCompileUnit(this);
728                 dwarf_cu->SetUserData(cu_sp.get());
729             }
730             else
731             {
732                 ModuleSP module_sp (m_obj_file->GetModule());
733                 if (module_sp)
734                 {
735                     const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
736                     if (cu_die)
737                     {
738                         const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
739                         const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
740                         LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
741                         if (cu_die_name)
742                         {
743                             std::string ramapped_file;
744                             FileSpec cu_file_spec;
745 
746                             if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0')
747                             {
748                                 // If we have a full path to the compile unit, we don't need to resolve
749                                 // the file.  This can be expensive e.g. when the source files are NFS mounted.
750                                 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
751                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
752                                 else
753                                     cu_file_spec.SetFile (cu_die_name, false);
754                             }
755                             else
756                             {
757                                 std::string fullpath(cu_comp_dir);
758                                 if (*fullpath.rbegin() != '/')
759                                     fullpath += '/';
760                                 fullpath += cu_die_name;
761                                 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
762                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
763                                 else
764                                     cu_file_spec.SetFile (fullpath.c_str(), false);
765                             }
766 
767                             cu_sp.reset(new CompileUnit (module_sp,
768                                                          dwarf_cu,
769                                                          cu_file_spec,
770                                                          MakeUserID(dwarf_cu->GetOffset()),
771                                                          cu_language));
772                             if (cu_sp)
773                             {
774                                 dwarf_cu->SetUserData(cu_sp.get());
775 
776                                 // Figure out the compile unit index if we weren't given one
777                                 if (cu_idx == UINT32_MAX)
778                                     DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
779 
780                                 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
781                             }
782                         }
783                     }
784                 }
785             }
786         }
787     }
788     return cu_sp;
789 }
790 
791 uint32_t
792 SymbolFileDWARF::GetNumCompileUnits()
793 {
794     DWARFDebugInfo* info = DebugInfo();
795     if (info)
796         return info->GetNumCompileUnits();
797     return 0;
798 }
799 
800 CompUnitSP
801 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
802 {
803     CompUnitSP cu_sp;
804     DWARFDebugInfo* info = DebugInfo();
805     if (info)
806     {
807         DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
808         if (dwarf_cu)
809             cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
810     }
811     return cu_sp;
812 }
813 
814 static void
815 AddRangesToBlock (Block& block,
816                   DWARFDebugRanges::RangeList& ranges,
817                   addr_t block_base_addr)
818 {
819     const size_t num_ranges = ranges.GetSize();
820     for (size_t i = 0; i<num_ranges; ++i)
821     {
822         const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
823         const addr_t range_base = range.GetRangeBase();
824         assert (range_base >= block_base_addr);
825         block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
826     }
827     block.FinalizeRanges ();
828 }
829 
830 
831 Function *
832 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
833 {
834     DWARFDebugRanges::RangeList func_ranges;
835     const char *name = NULL;
836     const char *mangled = NULL;
837     int decl_file = 0;
838     int decl_line = 0;
839     int decl_column = 0;
840     int call_file = 0;
841     int call_line = 0;
842     int call_column = 0;
843     DWARFExpression frame_base;
844 
845     assert (die->Tag() == DW_TAG_subprogram);
846 
847     if (die->Tag() != DW_TAG_subprogram)
848         return NULL;
849 
850     if (die->GetDIENamesAndRanges (this,
851                                    dwarf_cu,
852                                    name,
853                                    mangled,
854                                    func_ranges,
855                                    decl_file,
856                                    decl_line,
857                                    decl_column,
858                                    call_file,
859                                    call_line,
860                                    call_column,
861                                    &frame_base))
862     {
863         // Union of all ranges in the function DIE (if the function is discontiguous)
864         AddressRange func_range;
865         lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0);
866         lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0);
867         if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr)
868         {
869             func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, m_obj_file->GetSectionList());
870             if (func_range.GetBaseAddress().IsValid())
871                 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
872         }
873 
874         if (func_range.GetBaseAddress().IsValid())
875         {
876             Mangled func_name;
877             if (mangled)
878                 func_name.SetValue(ConstString(mangled), true);
879             else if (name)
880                 func_name.SetValue(ConstString(name), false);
881 
882             FunctionSP func_sp;
883             std::auto_ptr<Declaration> decl_ap;
884             if (decl_file != 0 || decl_line != 0 || decl_column != 0)
885                 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
886                                                decl_line,
887                                                decl_column));
888 
889             // Supply the type _only_ if it has already been parsed
890             Type *func_type = m_die_to_type.lookup (die);
891 
892             assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
893 
894             if (FixupAddress (func_range.GetBaseAddress()))
895             {
896                 const user_id_t func_user_id = MakeUserID(die->GetOffset());
897                 func_sp.reset(new Function (sc.comp_unit,
898                                             MakeUserID(func_user_id),       // UserID is the DIE offset
899                                             MakeUserID(func_user_id),
900                                             func_name,
901                                             func_type,
902                                             func_range));           // first address range
903 
904                 if (func_sp.get() != NULL)
905                 {
906                     if (frame_base.IsValid())
907                         func_sp->GetFrameBaseExpression() = frame_base;
908                     sc.comp_unit->AddFunction(func_sp);
909                     return func_sp.get();
910                 }
911             }
912         }
913     }
914     return NULL;
915 }
916 
917 bool
918 SymbolFileDWARF::FixupAddress (Address &addr)
919 {
920     SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile ();
921     if (debug_map_symfile)
922     {
923         return debug_map_symfile->LinkOSOAddress(addr);
924     }
925     // This is a normal DWARF file, no address fixups need to happen
926     return true;
927 }
928 lldb::LanguageType
929 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc)
930 {
931     assert (sc.comp_unit);
932     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
933     if (dwarf_cu)
934     {
935         const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly();
936         if (die)
937         {
938             const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
939             if (language)
940                 return (lldb::LanguageType)language;
941         }
942     }
943     return eLanguageTypeUnknown;
944 }
945 
946 size_t
947 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
948 {
949     assert (sc.comp_unit);
950     size_t functions_added = 0;
951     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
952     if (dwarf_cu)
953     {
954         DWARFDIECollection function_dies;
955         const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
956         size_t func_idx;
957         for (func_idx = 0; func_idx < num_functions; ++func_idx)
958         {
959             const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
960             if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL)
961             {
962                 if (ParseCompileUnitFunction(sc, dwarf_cu, die))
963                     ++functions_added;
964             }
965         }
966         //FixupTypes();
967     }
968     return functions_added;
969 }
970 
971 bool
972 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
973 {
974     assert (sc.comp_unit);
975     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
976     if (dwarf_cu)
977     {
978         const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
979 
980         if (cu_die)
981         {
982             const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
983             dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
984 
985             // All file indexes in DWARF are one based and a file of index zero is
986             // supposed to be the compile unit itself.
987             support_files.Append (*sc.comp_unit);
988 
989             return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
990         }
991     }
992     return false;
993 }
994 
995 struct ParseDWARFLineTableCallbackInfo
996 {
997     LineTable* line_table;
998     std::auto_ptr<LineSequence> sequence_ap;
999 };
1000 
1001 //----------------------------------------------------------------------
1002 // ParseStatementTableCallback
1003 //----------------------------------------------------------------------
1004 static void
1005 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
1006 {
1007     if (state.row == DWARFDebugLine::State::StartParsingLineTable)
1008     {
1009         // Just started parsing the line table
1010     }
1011     else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
1012     {
1013         // Done parsing line table, nothing to do for the cleanup
1014     }
1015     else
1016     {
1017         ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
1018         LineTable* line_table = info->line_table;
1019 
1020         // If this is our first time here, we need to create a
1021         // sequence container.
1022         if (!info->sequence_ap.get())
1023         {
1024             info->sequence_ap.reset(line_table->CreateLineSequenceContainer());
1025             assert(info->sequence_ap.get());
1026         }
1027         line_table->AppendLineEntryToSequence (info->sequence_ap.get(),
1028                                                state.address,
1029                                                state.line,
1030                                                state.column,
1031                                                state.file,
1032                                                state.is_stmt,
1033                                                state.basic_block,
1034                                                state.prologue_end,
1035                                                state.epilogue_begin,
1036                                                state.end_sequence);
1037         if (state.end_sequence)
1038         {
1039             // First, put the current sequence into the line table.
1040             line_table->InsertSequence(info->sequence_ap.get());
1041             // Then, empty it to prepare for the next sequence.
1042             info->sequence_ap->Clear();
1043         }
1044     }
1045 }
1046 
1047 bool
1048 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
1049 {
1050     assert (sc.comp_unit);
1051     if (sc.comp_unit->GetLineTable() != NULL)
1052         return true;
1053 
1054     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1055     if (dwarf_cu)
1056     {
1057         const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1058         if (dwarf_cu_die)
1059         {
1060             const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1061             if (cu_line_offset != DW_INVALID_OFFSET)
1062             {
1063                 std::auto_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
1064                 if (line_table_ap.get())
1065                 {
1066                     ParseDWARFLineTableCallbackInfo info;
1067                     info.line_table = line_table_ap.get();
1068                     lldb::offset_t offset = cu_line_offset;
1069                     DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
1070                     if (m_debug_map_symfile)
1071                     {
1072                         // We have an object file that has a line table with addresses
1073                         // that are not linked. We need to link the line table and convert
1074                         // the addresses that are relative to the .o file into addresses
1075                         // for the main executable.
1076                         sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get()));
1077                     }
1078                     else
1079                     {
1080                         sc.comp_unit->SetLineTable(line_table_ap.release());
1081                         return true;
1082                     }
1083                 }
1084             }
1085         }
1086     }
1087     return false;
1088 }
1089 
1090 size_t
1091 SymbolFileDWARF::ParseFunctionBlocks
1092 (
1093     const SymbolContext& sc,
1094     Block *parent_block,
1095     DWARFCompileUnit* dwarf_cu,
1096     const DWARFDebugInfoEntry *die,
1097     addr_t subprogram_low_pc,
1098     uint32_t depth
1099 )
1100 {
1101     size_t blocks_added = 0;
1102     while (die != NULL)
1103     {
1104         dw_tag_t tag = die->Tag();
1105 
1106         switch (tag)
1107         {
1108         case DW_TAG_inlined_subroutine:
1109         case DW_TAG_subprogram:
1110         case DW_TAG_lexical_block:
1111             {
1112                 Block *block = NULL;
1113                 if (tag == DW_TAG_subprogram)
1114                 {
1115                     // Skip any DW_TAG_subprogram DIEs that are inside
1116                     // of a normal or inlined functions. These will be
1117                     // parsed on their own as separate entities.
1118 
1119                     if (depth > 0)
1120                         break;
1121 
1122                     block = parent_block;
1123                 }
1124                 else
1125                 {
1126                     BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
1127                     parent_block->AddChild(block_sp);
1128                     block = block_sp.get();
1129                 }
1130                 DWARFDebugRanges::RangeList ranges;
1131                 const char *name = NULL;
1132                 const char *mangled_name = NULL;
1133 
1134                 int decl_file = 0;
1135                 int decl_line = 0;
1136                 int decl_column = 0;
1137                 int call_file = 0;
1138                 int call_line = 0;
1139                 int call_column = 0;
1140                 if (die->GetDIENamesAndRanges (this,
1141                                                dwarf_cu,
1142                                                name,
1143                                                mangled_name,
1144                                                ranges,
1145                                                decl_file, decl_line, decl_column,
1146                                                call_file, call_line, call_column))
1147                 {
1148                     if (tag == DW_TAG_subprogram)
1149                     {
1150                         assert (subprogram_low_pc == LLDB_INVALID_ADDRESS);
1151                         subprogram_low_pc = ranges.GetMinRangeBase(0);
1152                     }
1153                     else if (tag == DW_TAG_inlined_subroutine)
1154                     {
1155                         // We get called here for inlined subroutines in two ways.
1156                         // The first time is when we are making the Function object
1157                         // for this inlined concrete instance.  Since we're creating a top level block at
1158                         // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS.  So we need to
1159                         // adjust the containing address.
1160                         // The second time is when we are parsing the blocks inside the function that contains
1161                         // the inlined concrete instance.  Since these will be blocks inside the containing "real"
1162                         // function the offset will be for that function.
1163                         if (subprogram_low_pc == LLDB_INVALID_ADDRESS)
1164                         {
1165                             subprogram_low_pc = ranges.GetMinRangeBase(0);
1166                         }
1167                     }
1168 
1169                     AddRangesToBlock (*block, ranges, subprogram_low_pc);
1170 
1171                     if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL))
1172                     {
1173                         std::auto_ptr<Declaration> decl_ap;
1174                         if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1175                             decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1176                                                           decl_line, decl_column));
1177 
1178                         std::auto_ptr<Declaration> call_ap;
1179                         if (call_file != 0 || call_line != 0 || call_column != 0)
1180                             call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
1181                                                           call_line, call_column));
1182 
1183                         block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
1184                     }
1185 
1186                     ++blocks_added;
1187 
1188                     if (die->HasChildren())
1189                     {
1190                         blocks_added += ParseFunctionBlocks (sc,
1191                                                              block,
1192                                                              dwarf_cu,
1193                                                              die->GetFirstChild(),
1194                                                              subprogram_low_pc,
1195                                                              depth + 1);
1196                     }
1197                 }
1198             }
1199             break;
1200         default:
1201             break;
1202         }
1203 
1204         // Only parse siblings of the block if we are not at depth zero. A depth
1205         // of zero indicates we are currently parsing the top level
1206         // DW_TAG_subprogram DIE
1207 
1208         if (depth == 0)
1209             die = NULL;
1210         else
1211             die = die->GetSibling();
1212     }
1213     return blocks_added;
1214 }
1215 
1216 bool
1217 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
1218                                    const DWARFDebugInfoEntry *die,
1219                                    ClangASTContext::TemplateParameterInfos &template_param_infos)
1220 {
1221     const dw_tag_t tag = die->Tag();
1222 
1223     switch (tag)
1224     {
1225     case DW_TAG_template_type_parameter:
1226     case DW_TAG_template_value_parameter:
1227         {
1228             const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1229 
1230             DWARFDebugInfoEntry::Attributes attributes;
1231             const size_t num_attributes = die->GetAttributes (this,
1232                                                               dwarf_cu,
1233                                                               fixed_form_sizes,
1234                                                               attributes);
1235             const char *name = NULL;
1236             Type *lldb_type = NULL;
1237             clang_type_t clang_type = NULL;
1238             uint64_t uval64 = 0;
1239             bool uval64_valid = false;
1240             if (num_attributes > 0)
1241             {
1242                 DWARFFormValue form_value;
1243                 for (size_t i=0; i<num_attributes; ++i)
1244                 {
1245                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
1246 
1247                     switch (attr)
1248                     {
1249                         case DW_AT_name:
1250                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1251                                 name = form_value.AsCString(&get_debug_str_data());
1252                             break;
1253 
1254                         case DW_AT_type:
1255                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1256                             {
1257                                 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
1258                                 lldb_type = ResolveTypeUID(type_die_offset);
1259                                 if (lldb_type)
1260                                     clang_type = lldb_type->GetClangForwardType();
1261                             }
1262                             break;
1263 
1264                         case DW_AT_const_value:
1265                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1266                             {
1267                                 uval64_valid = true;
1268                                 uval64 = form_value.Unsigned();
1269                             }
1270                             break;
1271                         default:
1272                             break;
1273                     }
1274                 }
1275 
1276                 if (name && lldb_type && clang_type)
1277                 {
1278                     bool is_signed = false;
1279                     template_param_infos.names.push_back(name);
1280                     clang::QualType clang_qual_type (clang::QualType::getFromOpaquePtr (clang_type));
1281                     if (tag == DW_TAG_template_value_parameter && ClangASTContext::IsIntegerType (clang_type, is_signed) && uval64_valid)
1282                     {
1283                         llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
1284                         template_param_infos.args.push_back (clang::TemplateArgument (*GetClangASTContext().getASTContext(),
1285                                                                                       llvm::APSInt(apint),
1286                                                                                       clang_qual_type));
1287                     }
1288                     else
1289                     {
1290                         template_param_infos.args.push_back (clang::TemplateArgument (clang_qual_type));
1291                     }
1292                 }
1293                 else
1294                 {
1295                     return false;
1296                 }
1297 
1298             }
1299         }
1300         return true;
1301 
1302     default:
1303         break;
1304     }
1305     return false;
1306 }
1307 
1308 bool
1309 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
1310                                               const DWARFDebugInfoEntry *parent_die,
1311                                               ClangASTContext::TemplateParameterInfos &template_param_infos)
1312 {
1313 
1314     if (parent_die == NULL)
1315         return false;
1316 
1317     Args template_parameter_names;
1318     for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
1319          die != NULL;
1320          die = die->GetSibling())
1321     {
1322         const dw_tag_t tag = die->Tag();
1323 
1324         switch (tag)
1325         {
1326             case DW_TAG_template_type_parameter:
1327             case DW_TAG_template_value_parameter:
1328                 ParseTemplateDIE (dwarf_cu, die, template_param_infos);
1329             break;
1330 
1331         default:
1332             break;
1333         }
1334     }
1335     if (template_param_infos.args.empty())
1336         return false;
1337     return template_param_infos.args.size() == template_param_infos.names.size();
1338 }
1339 
1340 clang::ClassTemplateDecl *
1341 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
1342                                          lldb::AccessType access_type,
1343                                          const char *parent_name,
1344                                          int tag_decl_kind,
1345                                          const ClangASTContext::TemplateParameterInfos &template_param_infos)
1346 {
1347     if (template_param_infos.IsValid())
1348     {
1349         std::string template_basename(parent_name);
1350         template_basename.erase (template_basename.find('<'));
1351         ClangASTContext &ast = GetClangASTContext();
1352 
1353         return ast.CreateClassTemplateDecl (decl_ctx,
1354                                             access_type,
1355                                             template_basename.c_str(),
1356                                             tag_decl_kind,
1357                                             template_param_infos);
1358     }
1359     return NULL;
1360 }
1361 
1362 class SymbolFileDWARF::DelayedAddObjCClassProperty
1363 {
1364 public:
1365     DelayedAddObjCClassProperty
1366     (
1367         clang::ASTContext      *ast,
1368         lldb::clang_type_t      class_opaque_type,
1369         const char             *property_name,
1370         lldb::clang_type_t      property_opaque_type,  // The property type is only required if you don't have an ivar decl
1371         clang::ObjCIvarDecl    *ivar_decl,
1372         const char             *property_setter_name,
1373         const char             *property_getter_name,
1374         uint32_t                property_attributes,
1375         const ClangASTMetadata *metadata
1376     ) :
1377         m_ast                   (ast),
1378         m_class_opaque_type     (class_opaque_type),
1379         m_property_name         (property_name),
1380         m_property_opaque_type  (property_opaque_type),
1381         m_ivar_decl             (ivar_decl),
1382         m_property_setter_name  (property_setter_name),
1383         m_property_getter_name  (property_getter_name),
1384         m_property_attributes   (property_attributes)
1385     {
1386         if (metadata != NULL)
1387         {
1388             m_metadata_ap.reset(new ClangASTMetadata());
1389             *m_metadata_ap = *metadata;
1390         }
1391     }
1392 
1393     DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs)
1394     {
1395       *this = rhs;
1396     }
1397 
1398     DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs)
1399     {
1400         m_ast                  = rhs.m_ast;
1401         m_class_opaque_type    = rhs.m_class_opaque_type;
1402         m_property_name        = rhs.m_property_name;
1403         m_property_opaque_type = rhs.m_property_opaque_type;
1404         m_ivar_decl            = rhs.m_ivar_decl;
1405         m_property_setter_name = rhs.m_property_setter_name;
1406         m_property_getter_name = rhs.m_property_getter_name;
1407         m_property_attributes  = rhs.m_property_attributes;
1408 
1409         if (rhs.m_metadata_ap.get())
1410         {
1411             m_metadata_ap.reset (new ClangASTMetadata());
1412             *m_metadata_ap = *rhs.m_metadata_ap;
1413         }
1414         return *this;
1415     }
1416 
1417     bool Finalize() const
1418     {
1419         return ClangASTContext::AddObjCClassProperty (m_ast,
1420                                                       m_class_opaque_type,
1421                                                       m_property_name,
1422                                                       m_property_opaque_type,
1423                                                       m_ivar_decl,
1424                                                       m_property_setter_name,
1425                                                       m_property_getter_name,
1426                                                       m_property_attributes,
1427                                                       m_metadata_ap.get());
1428     }
1429 private:
1430     clang::ASTContext      *m_ast;
1431     lldb::clang_type_t      m_class_opaque_type;
1432     const char             *m_property_name;
1433     lldb::clang_type_t      m_property_opaque_type;
1434     clang::ObjCIvarDecl    *m_ivar_decl;
1435     const char             *m_property_setter_name;
1436     const char             *m_property_getter_name;
1437     uint32_t                m_property_attributes;
1438     std::auto_ptr<ClangASTMetadata> m_metadata_ap;
1439 };
1440 
1441 struct BitfieldInfo
1442 {
1443     uint64_t bit_size;
1444     uint64_t bit_offset;
1445 
1446     BitfieldInfo () :
1447         bit_size (LLDB_INVALID_ADDRESS),
1448         bit_offset (LLDB_INVALID_ADDRESS)
1449     {
1450     }
1451 
1452     bool IsValid ()
1453     {
1454         return (bit_size != LLDB_INVALID_ADDRESS) &&
1455                (bit_offset != LLDB_INVALID_ADDRESS);
1456     }
1457 };
1458 
1459 
1460 bool
1461 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu,
1462                                          const DWARFDebugInfoEntry *parent_die)
1463 {
1464     if (parent_die)
1465     {
1466         for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1467         {
1468             dw_tag_t tag = die->Tag();
1469             bool check_virtuality = false;
1470             switch (tag)
1471             {
1472                 case DW_TAG_inheritance:
1473                 case DW_TAG_subprogram:
1474                     check_virtuality = true;
1475                     break;
1476                 default:
1477                     break;
1478             }
1479             if (check_virtuality)
1480             {
1481                 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0)
1482                     return true;
1483             }
1484         }
1485     }
1486     return false;
1487 }
1488 
1489 size_t
1490 SymbolFileDWARF::ParseChildMembers
1491 (
1492     const SymbolContext& sc,
1493     DWARFCompileUnit* dwarf_cu,
1494     const DWARFDebugInfoEntry *parent_die,
1495     clang_type_t class_clang_type,
1496     const LanguageType class_language,
1497     std::vector<clang::CXXBaseSpecifier *>& base_classes,
1498     std::vector<int>& member_accessibilities,
1499     DWARFDIECollection& member_function_dies,
1500     DelayedPropertyList& delayed_properties,
1501     AccessType& default_accessibility,
1502     bool &is_a_class,
1503     LayoutInfo &layout_info
1504 )
1505 {
1506     if (parent_die == NULL)
1507         return 0;
1508 
1509     size_t count = 0;
1510     const DWARFDebugInfoEntry *die;
1511     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1512     uint32_t member_idx = 0;
1513     BitfieldInfo last_field_info;
1514 
1515     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1516     {
1517         dw_tag_t tag = die->Tag();
1518 
1519         switch (tag)
1520         {
1521         case DW_TAG_member:
1522         case DW_TAG_APPLE_property:
1523             {
1524                 DWARFDebugInfoEntry::Attributes attributes;
1525                 const size_t num_attributes = die->GetAttributes (this,
1526                                                                   dwarf_cu,
1527                                                                   fixed_form_sizes,
1528                                                                   attributes);
1529                 if (num_attributes > 0)
1530                 {
1531                     Declaration decl;
1532                     //DWARFExpression location;
1533                     const char *name = NULL;
1534                     const char *prop_name = NULL;
1535                     const char *prop_getter_name = NULL;
1536                     const char *prop_setter_name = NULL;
1537                     uint32_t prop_attributes = 0;
1538 
1539 
1540                     bool is_artificial = false;
1541                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
1542                     AccessType accessibility = eAccessNone;
1543                     uint32_t member_byte_offset = UINT32_MAX;
1544                     size_t byte_size = 0;
1545                     size_t bit_offset = 0;
1546                     size_t bit_size = 0;
1547                     bool is_external = false; // On DW_TAG_members, this means the member is static
1548                     uint32_t i;
1549                     for (i=0; i<num_attributes && !is_artificial; ++i)
1550                     {
1551                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
1552                         DWARFFormValue form_value;
1553                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1554                         {
1555                             switch (attr)
1556                             {
1557                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1558                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
1559                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1560                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
1561                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
1562                             case DW_AT_bit_offset:  bit_offset = form_value.Unsigned(); break;
1563                             case DW_AT_bit_size:    bit_size = form_value.Unsigned(); break;
1564                             case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
1565                             case DW_AT_data_member_location:
1566                                 if (form_value.BlockData())
1567                                 {
1568                                     Value initialValue(0);
1569                                     Value memberOffset(0);
1570                                     const DataExtractor& debug_info_data = get_debug_info_data();
1571                                     uint32_t block_length = form_value.Unsigned();
1572                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1573                                     if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
1574                                                                   NULL, // clang::ASTContext *
1575                                                                   NULL, // ClangExpressionVariableList *
1576                                                                   NULL, // ClangExpressionDeclMap *
1577                                                                   NULL, // RegisterContext *
1578                                                                   debug_info_data,
1579                                                                   block_offset,
1580                                                                   block_length,
1581                                                                   eRegisterKindDWARF,
1582                                                                   &initialValue,
1583                                                                   memberOffset,
1584                                                                   NULL))
1585                                     {
1586                                         member_byte_offset = memberOffset.ResolveValue(NULL, NULL).UInt();
1587                                     }
1588                                 }
1589                                 break;
1590 
1591                             case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
1592                             case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break;
1593                             case DW_AT_APPLE_property_name:      prop_name = form_value.AsCString(&get_debug_str_data()); break;
1594                             case DW_AT_APPLE_property_getter:    prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
1595                             case DW_AT_APPLE_property_setter:    prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
1596                             case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
1597                             case DW_AT_external:                 is_external = form_value.Unsigned() != 0; break;
1598 
1599                             default:
1600                             case DW_AT_declaration:
1601                             case DW_AT_description:
1602                             case DW_AT_mutable:
1603                             case DW_AT_visibility:
1604                             case DW_AT_sibling:
1605                                 break;
1606                             }
1607                         }
1608                     }
1609 
1610                     if (prop_name)
1611                     {
1612                         ConstString fixed_getter;
1613                         ConstString fixed_setter;
1614 
1615                         // Check if the property getter/setter were provided as full
1616                         // names.  We want basenames, so we extract them.
1617 
1618                         if (prop_getter_name && prop_getter_name[0] == '-')
1619                         {
1620                             ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true);
1621                             prop_getter_name = prop_getter_method.GetSelector().GetCString();
1622                         }
1623 
1624                         if (prop_setter_name && prop_setter_name[0] == '-')
1625                         {
1626                             ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true);
1627                             prop_setter_name = prop_setter_method.GetSelector().GetCString();
1628                         }
1629 
1630                         // If the names haven't been provided, they need to be
1631                         // filled in.
1632 
1633                         if (!prop_getter_name)
1634                         {
1635                             prop_getter_name = prop_name;
1636                         }
1637                         if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
1638                         {
1639                             StreamString ss;
1640 
1641                             ss.Printf("set%c%s:",
1642                                       toupper(prop_name[0]),
1643                                       &prop_name[1]);
1644 
1645                             fixed_setter.SetCString(ss.GetData());
1646                             prop_setter_name = fixed_setter.GetCString();
1647                         }
1648                     }
1649 
1650                     // Clang has a DWARF generation bug where sometimes it
1651                     // represents fields that are references with bad byte size
1652                     // and bit size/offset information such as:
1653                     //
1654                     //  DW_AT_byte_size( 0x00 )
1655                     //  DW_AT_bit_size( 0x40 )
1656                     //  DW_AT_bit_offset( 0xffffffffffffffc0 )
1657                     //
1658                     // So check the bit offset to make sure it is sane, and if
1659                     // the values are not sane, remove them. If we don't do this
1660                     // then we will end up with a crash if we try to use this
1661                     // type in an expression when clang becomes unhappy with its
1662                     // recycled debug info.
1663 
1664                     if (bit_offset > 128)
1665                     {
1666                         bit_size = 0;
1667                         bit_offset = 0;
1668                     }
1669 
1670                     // FIXME: Make Clang ignore Objective-C accessibility for expressions
1671                     if (class_language == eLanguageTypeObjC ||
1672                         class_language == eLanguageTypeObjC_plus_plus)
1673                         accessibility = eAccessNone;
1674 
1675                     if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
1676                     {
1677                         // Not all compilers will mark the vtable pointer
1678                         // member as artificial (llvm-gcc). We can't have
1679                         // the virtual members in our classes otherwise it
1680                         // throws off all child offsets since we end up
1681                         // having and extra pointer sized member in our
1682                         // class layouts.
1683                         is_artificial = true;
1684                     }
1685 
1686                     // Skip static members
1687                     if (is_external && member_byte_offset == UINT32_MAX)
1688                         break;
1689 
1690                     if (is_artificial == false)
1691                     {
1692                         Type *member_type = ResolveTypeUID(encoding_uid);
1693 
1694                         clang::FieldDecl *field_decl = NULL;
1695                         if (tag == DW_TAG_member)
1696                         {
1697                             if (member_type)
1698                             {
1699                                 if (accessibility == eAccessNone)
1700                                     accessibility = default_accessibility;
1701                                 member_accessibilities.push_back(accessibility);
1702 
1703                                 BitfieldInfo this_field_info;
1704 
1705                                 this_field_info.bit_size = bit_size;
1706 
1707                                 if (member_byte_offset != UINT32_MAX || bit_size != 0)
1708                                 {
1709                                     /////////////////////////////////////////////////////////////
1710                                     // How to locate a field given the DWARF debug information
1711                                     //
1712                                     // AT_byte_size indicates the size of the word in which the
1713                                     // bit offset must be interpreted.
1714                                     //
1715                                     // AT_data_member_location indicates the byte offset of the
1716                                     // word from the base address of the structure.
1717                                     //
1718                                     // AT_bit_offset indicates how many bits into the word
1719                                     // (according to the host endianness) the low-order bit of
1720                                     // the field starts.  AT_bit_offset can be negative.
1721                                     //
1722                                     // AT_bit_size indicates the size of the field in bits.
1723                                     /////////////////////////////////////////////////////////////
1724 
1725                                     this_field_info.bit_offset = 0;
1726 
1727                                     this_field_info.bit_offset += (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
1728 
1729                                     if (GetObjectFile()->GetByteOrder() == eByteOrderLittle)
1730                                     {
1731                                         this_field_info.bit_offset += byte_size * 8;
1732                                         this_field_info.bit_offset -= (bit_offset + bit_size);
1733                                     }
1734                                     else
1735                                     {
1736                                         this_field_info.bit_offset += bit_offset;
1737                                     }
1738                                 }
1739 
1740                                 // If the member to be emitted did not start on a character boundary and there is
1741                                 // empty space between the last field and this one, then we need to emit an
1742                                 // anonymous member filling up the space up to its start.  There are three cases
1743                                 // here:
1744                                 //
1745                                 // 1 If the previous member ended on a character boundary, then we can emit an
1746                                 //   anonymous member starting at the most recent character boundary.
1747                                 //
1748                                 // 2 If the previous member did not end on a character boundary and the distance
1749                                 //   from the end of the previous member to the current member is less than a
1750                                 //   word width, then we can emit an anonymous member starting right after the
1751                                 //   previous member and right before this member.
1752                                 //
1753                                 // 3 If the previous member did not end on a character boundary and the distance
1754                                 //   from the end of the previous member to the current member is greater than
1755                                 //   or equal a word width, then we act as in Case 1.
1756 
1757                                 const uint64_t character_width = 8;
1758                                 const uint64_t word_width = 32;
1759 
1760                                 if (this_field_info.IsValid())
1761                                 {
1762                                     // Objective-C has invalid DW_AT_bit_offset values in older versions
1763                                     // of clang, so we have to be careful and only insert unnammed bitfields
1764                                     // if we have a new enough clang.
1765                                     bool detect_unnamed_bitfields = true;
1766 
1767                                     if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus)
1768                                         detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields ();
1769 
1770                                     if (detect_unnamed_bitfields)
1771                                     {
1772                                         BitfieldInfo anon_field_info;
1773 
1774                                         if ((this_field_info.bit_offset % character_width) != 0) // not char aligned
1775                                         {
1776                                             uint64_t last_field_end = 0;
1777 
1778                                             if (last_field_info.IsValid())
1779                                                 last_field_end = last_field_info.bit_offset + last_field_info.bit_size;
1780 
1781                                             if (this_field_info.bit_offset != last_field_end)
1782                                             {
1783                                                 if (((last_field_end % character_width) == 0) ||                    // case 1
1784                                                     (this_field_info.bit_offset - last_field_end >= word_width))    // case 3
1785                                                 {
1786                                                     anon_field_info.bit_size = this_field_info.bit_offset % character_width;
1787                                                     anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size;
1788                                                 }
1789                                                 else                                                                // case 2
1790                                                 {
1791                                                     anon_field_info.bit_size = this_field_info.bit_offset - last_field_end;
1792                                                     anon_field_info.bit_offset = last_field_end;
1793                                                 }
1794                                             }
1795                                         }
1796 
1797                                         if (anon_field_info.IsValid())
1798                                         {
1799                                             clang::FieldDecl *unnamed_bitfield_decl = GetClangASTContext().AddFieldToRecordType (class_clang_type,
1800                                                                                                                                  NULL,
1801                                                                                                                                  GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width),
1802                                                                                                                                  accessibility,
1803                                                                                                                                  anon_field_info.bit_size);
1804 
1805                                             layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset));
1806                                         }
1807                                     }
1808                                 }
1809 
1810                                 clang_type_t member_clang_type = member_type->GetClangLayoutType();
1811 
1812                                 {
1813                                     // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
1814                                     // If the current field is at the end of the structure, then there is definitely no room for extra
1815                                     // elements and we override the type to array[0].
1816 
1817                                     clang_type_t member_array_element_type;
1818                                     uint64_t member_array_size;
1819                                     bool member_array_is_incomplete;
1820 
1821                                     if (GetClangASTContext().IsArrayType(member_clang_type,
1822                                                                          &member_array_element_type,
1823                                                                          &member_array_size,
1824                                                                          &member_array_is_incomplete) &&
1825                                         !member_array_is_incomplete)
1826                                     {
1827                                         uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX);
1828 
1829                                         if (member_byte_offset >= parent_byte_size)
1830                                         {
1831                                             if (member_array_size != 1)
1832                                             {
1833                                                 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which extends beyond the bounds of 0x%8.8" PRIx64,
1834                                                                                            MakeUserID(die->GetOffset()),
1835                                                                                            name,
1836                                                                                            encoding_uid,
1837                                                                                            MakeUserID(parent_die->GetOffset()));
1838                                             }
1839 
1840                                             member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0);
1841                                         }
1842                                     }
1843                                 }
1844 
1845                                 field_decl = GetClangASTContext().AddFieldToRecordType (class_clang_type,
1846                                                                                         name,
1847                                                                                         member_clang_type,
1848                                                                                         accessibility,
1849                                                                                         bit_size);
1850 
1851                                 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset()));
1852 
1853                                 if (this_field_info.IsValid())
1854                                 {
1855                                     layout_info.field_offsets.insert(std::make_pair(field_decl, this_field_info.bit_offset));
1856                                     last_field_info = this_field_info;
1857                                 }
1858                             }
1859                             else
1860                             {
1861                                 if (name)
1862                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
1863                                                                                MakeUserID(die->GetOffset()),
1864                                                                                name,
1865                                                                                encoding_uid);
1866                                 else
1867                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
1868                                                                                MakeUserID(die->GetOffset()),
1869                                                                                encoding_uid);
1870                             }
1871                         }
1872 
1873                         if (prop_name != NULL)
1874                         {
1875                             clang::ObjCIvarDecl *ivar_decl = NULL;
1876 
1877                             if (field_decl)
1878                             {
1879                                 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
1880                                 assert (ivar_decl != NULL);
1881                             }
1882 
1883                             ClangASTMetadata metadata;
1884                             metadata.SetUserID (MakeUserID(die->GetOffset()));
1885                             delayed_properties.push_back(DelayedAddObjCClassProperty(GetClangASTContext().getASTContext(),
1886                                                                                      class_clang_type,
1887                                                                                      prop_name,
1888                                                                                      member_type->GetClangLayoutType(),
1889                                                                                      ivar_decl,
1890                                                                                      prop_setter_name,
1891                                                                                      prop_getter_name,
1892                                                                                      prop_attributes,
1893                                                                                      &metadata));
1894 
1895                             if (ivar_decl)
1896                                 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset()));
1897                         }
1898                     }
1899                 }
1900                 ++member_idx;
1901             }
1902             break;
1903 
1904         case DW_TAG_subprogram:
1905             // Let the type parsing code handle this one for us.
1906             member_function_dies.Append (die);
1907             break;
1908 
1909         case DW_TAG_inheritance:
1910             {
1911                 is_a_class = true;
1912                 if (default_accessibility == eAccessNone)
1913                     default_accessibility = eAccessPrivate;
1914                 // TODO: implement DW_TAG_inheritance type parsing
1915                 DWARFDebugInfoEntry::Attributes attributes;
1916                 const size_t num_attributes = die->GetAttributes (this,
1917                                                                   dwarf_cu,
1918                                                                   fixed_form_sizes,
1919                                                                   attributes);
1920                 if (num_attributes > 0)
1921                 {
1922                     Declaration decl;
1923                     DWARFExpression location;
1924                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
1925                     AccessType accessibility = default_accessibility;
1926                     bool is_virtual = false;
1927                     bool is_base_of_class = true;
1928                     off_t member_byte_offset = 0;
1929                     uint32_t i;
1930                     for (i=0; i<num_attributes; ++i)
1931                     {
1932                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
1933                         DWARFFormValue form_value;
1934                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1935                         {
1936                             switch (attr)
1937                             {
1938                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1939                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
1940                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1941                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
1942                             case DW_AT_data_member_location:
1943                                 if (form_value.BlockData())
1944                                 {
1945                                     Value initialValue(0);
1946                                     Value memberOffset(0);
1947                                     const DataExtractor& debug_info_data = get_debug_info_data();
1948                                     uint32_t block_length = form_value.Unsigned();
1949                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1950                                     if (DWARFExpression::Evaluate (NULL,
1951                                                                    NULL,
1952                                                                    NULL,
1953                                                                    NULL,
1954                                                                    NULL,
1955                                                                    debug_info_data,
1956                                                                    block_offset,
1957                                                                    block_length,
1958                                                                    eRegisterKindDWARF,
1959                                                                    &initialValue,
1960                                                                    memberOffset,
1961                                                                    NULL))
1962                                     {
1963                                         member_byte_offset = memberOffset.ResolveValue(NULL, NULL).UInt();
1964                                     }
1965                                 }
1966                                 break;
1967 
1968                             case DW_AT_accessibility:
1969                                 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
1970                                 break;
1971 
1972                             case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break;
1973                             default:
1974                             case DW_AT_sibling:
1975                                 break;
1976                             }
1977                         }
1978                     }
1979 
1980                     Type *base_class_type = ResolveTypeUID(encoding_uid);
1981                     assert(base_class_type);
1982 
1983                     clang_type_t base_class_clang_type = base_class_type->GetClangFullType();
1984                     assert (base_class_clang_type);
1985                     if (class_language == eLanguageTypeObjC)
1986                     {
1987                         GetClangASTContext().SetObjCSuperClass(class_clang_type, base_class_clang_type);
1988                     }
1989                     else
1990                     {
1991                         base_classes.push_back (GetClangASTContext().CreateBaseClassSpecifier (base_class_clang_type,
1992                                                                                                accessibility,
1993                                                                                                is_virtual,
1994                                                                                                is_base_of_class));
1995 
1996                         if (is_virtual)
1997                         {
1998                             layout_info.vbase_offsets.insert(std::make_pair(ClangASTType::GetAsCXXRecordDecl(class_clang_type),
1999                                                                             clang::CharUnits::fromQuantity(member_byte_offset)));
2000                         }
2001                         else
2002                         {
2003                             layout_info.base_offsets.insert(std::make_pair(ClangASTType::GetAsCXXRecordDecl(class_clang_type),
2004                                                                            clang::CharUnits::fromQuantity(member_byte_offset)));
2005                         }
2006                     }
2007                 }
2008             }
2009             break;
2010 
2011         default:
2012             break;
2013         }
2014     }
2015 
2016     return count;
2017 }
2018 
2019 
2020 clang::DeclContext*
2021 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
2022 {
2023     DWARFDebugInfo* debug_info = DebugInfo();
2024     if (debug_info && UserIDMatches(type_uid))
2025     {
2026         DWARFCompileUnitSP cu_sp;
2027         const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2028         if (die)
2029             return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
2030     }
2031     return NULL;
2032 }
2033 
2034 clang::DeclContext*
2035 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
2036 {
2037     if (UserIDMatches(type_uid))
2038         return GetClangDeclContextForDIEOffset (sc, type_uid);
2039     return NULL;
2040 }
2041 
2042 Type*
2043 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
2044 {
2045     if (UserIDMatches(type_uid))
2046     {
2047         DWARFDebugInfo* debug_info = DebugInfo();
2048         if (debug_info)
2049         {
2050             DWARFCompileUnitSP cu_sp;
2051             const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2052             const bool assert_not_being_parsed = true;
2053             return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
2054         }
2055     }
2056     return NULL;
2057 }
2058 
2059 Type*
2060 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
2061 {
2062     if (die != NULL)
2063     {
2064         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
2065         if (log)
2066             GetObjectFile()->GetModule()->LogMessage (log,
2067                                                       "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
2068                                                       die->GetOffset(),
2069                                                       DW_TAG_value_to_name(die->Tag()),
2070                                                       die->GetName(this, cu));
2071 
2072         // We might be coming in in the middle of a type tree (a class
2073         // withing a class, an enum within a class), so parse any needed
2074         // parent DIEs before we get to this one...
2075         const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
2076         switch (decl_ctx_die->Tag())
2077         {
2078             case DW_TAG_structure_type:
2079             case DW_TAG_union_type:
2080             case DW_TAG_class_type:
2081             {
2082                 // Get the type, which could be a forward declaration
2083                 if (log)
2084                     GetObjectFile()->GetModule()->LogMessage (log,
2085                                                               "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
2086                                                               die->GetOffset(),
2087                                                               DW_TAG_value_to_name(die->Tag()),
2088                                                               die->GetName(this, cu),
2089                                                               decl_ctx_die->GetOffset());
2090 //
2091 //                Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
2092 //                if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
2093 //                {
2094 //                    if (log)
2095 //                        GetObjectFile()->GetModule()->LogMessage (log,
2096 //                                                                  "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
2097 //                                                                  die->GetOffset(),
2098 //                                                                  DW_TAG_value_to_name(die->Tag()),
2099 //                                                                  die->GetName(this, cu),
2100 //                                                                  decl_ctx_die->GetOffset());
2101 //                    // Ask the type to complete itself if it already hasn't since if we
2102 //                    // want a function (method or static) from a class, the class must
2103 //                    // create itself and add it's own methods and class functions.
2104 //                    if (parent_type)
2105 //                        parent_type->GetClangFullType();
2106 //                }
2107             }
2108             break;
2109 
2110             default:
2111                 break;
2112         }
2113         return ResolveType (cu, die);
2114     }
2115     return NULL;
2116 }
2117 
2118 // This function is used when SymbolFileDWARFDebugMap owns a bunch of
2119 // SymbolFileDWARF objects to detect if this DWARF file is the one that
2120 // can resolve a clang_type.
2121 bool
2122 SymbolFileDWARF::HasForwardDeclForClangType (lldb::clang_type_t clang_type)
2123 {
2124     clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type);
2125     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers);
2126     return die != NULL;
2127 }
2128 
2129 
2130 lldb::clang_type_t
2131 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_type)
2132 {
2133     // We have a struct/union/class/enum that needs to be fully resolved.
2134     clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type);
2135     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers);
2136     if (die == NULL)
2137     {
2138         // We have already resolved this type...
2139         return clang_type;
2140     }
2141     // Once we start resolving this type, remove it from the forward declaration
2142     // map in case anyone child members or other types require this type to get resolved.
2143     // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
2144     // are done.
2145     m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers);
2146 
2147 
2148     // Disable external storage for this type so we don't get anymore
2149     // clang::ExternalASTSource queries for this type.
2150     ClangASTContext::SetHasExternalStorage (clang_type, false);
2151 
2152     DWARFDebugInfo* debug_info = DebugInfo();
2153 
2154     DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
2155     Type *type = m_die_to_type.lookup (die);
2156 
2157     const dw_tag_t tag = die->Tag();
2158 
2159     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2160     if (log)
2161     {
2162         GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log,
2163                                                                   "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2164                                                                   MakeUserID(die->GetOffset()),
2165                                                                   DW_TAG_value_to_name(tag),
2166                                                                   type->GetName().AsCString());
2167 
2168     }
2169     assert (clang_type);
2170     DWARFDebugInfoEntry::Attributes attributes;
2171 
2172     ClangASTContext &ast = GetClangASTContext();
2173 
2174     switch (tag)
2175     {
2176     case DW_TAG_structure_type:
2177     case DW_TAG_union_type:
2178     case DW_TAG_class_type:
2179         {
2180             LayoutInfo layout_info;
2181 
2182             {
2183                 if (die->HasChildren())
2184                 {
2185 
2186                     LanguageType class_language = eLanguageTypeUnknown;
2187                     bool is_objc_class = ClangASTContext::IsObjCClassType (clang_type);
2188                     if (is_objc_class)
2189                     {
2190                         class_language = eLanguageTypeObjC;
2191                         // For objective C we don't start the definition when
2192                         // the class is created.
2193                         ast.StartTagDeclarationDefinition (clang_type);
2194                     }
2195 
2196                     int tag_decl_kind = -1;
2197                     AccessType default_accessibility = eAccessNone;
2198                     if (tag == DW_TAG_structure_type)
2199                     {
2200                         tag_decl_kind = clang::TTK_Struct;
2201                         default_accessibility = eAccessPublic;
2202                     }
2203                     else if (tag == DW_TAG_union_type)
2204                     {
2205                         tag_decl_kind = clang::TTK_Union;
2206                         default_accessibility = eAccessPublic;
2207                     }
2208                     else if (tag == DW_TAG_class_type)
2209                     {
2210                         tag_decl_kind = clang::TTK_Class;
2211                         default_accessibility = eAccessPrivate;
2212                     }
2213 
2214                     SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2215                     std::vector<clang::CXXBaseSpecifier *> base_classes;
2216                     std::vector<int> member_accessibilities;
2217                     bool is_a_class = false;
2218                     // Parse members and base classes first
2219                     DWARFDIECollection member_function_dies;
2220 
2221                     DelayedPropertyList delayed_properties;
2222                     ParseChildMembers (sc,
2223                                        dwarf_cu,
2224                                        die,
2225                                        clang_type,
2226                                        class_language,
2227                                        base_classes,
2228                                        member_accessibilities,
2229                                        member_function_dies,
2230                                        delayed_properties,
2231                                        default_accessibility,
2232                                        is_a_class,
2233                                        layout_info);
2234 
2235                     // Now parse any methods if there were any...
2236                     size_t num_functions = member_function_dies.Size();
2237                     if (num_functions > 0)
2238                     {
2239                         for (size_t i=0; i<num_functions; ++i)
2240                         {
2241                             ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
2242                         }
2243                     }
2244 
2245                     if (class_language == eLanguageTypeObjC)
2246                     {
2247                         std::string class_str (ClangASTType::GetTypeNameForOpaqueQualType(ast.getASTContext(), clang_type));
2248                         if (!class_str.empty())
2249                         {
2250 
2251                             DIEArray method_die_offsets;
2252                             if (m_using_apple_tables)
2253                             {
2254                                 if (m_apple_objc_ap.get())
2255                                     m_apple_objc_ap->FindByName(class_str.c_str(), method_die_offsets);
2256                             }
2257                             else
2258                             {
2259                                 if (!m_indexed)
2260                                     Index ();
2261 
2262                                 ConstString class_name (class_str.c_str());
2263                                 m_objc_class_selectors_index.Find (class_name, method_die_offsets);
2264                             }
2265 
2266                             if (!method_die_offsets.empty())
2267                             {
2268                                 DWARFDebugInfo* debug_info = DebugInfo();
2269 
2270                                 DWARFCompileUnit* method_cu = NULL;
2271                                 const size_t num_matches = method_die_offsets.size();
2272                                 for (size_t i=0; i<num_matches; ++i)
2273                                 {
2274                                     const dw_offset_t die_offset = method_die_offsets[i];
2275                                     DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
2276 
2277                                     if (method_die)
2278                                         ResolveType (method_cu, method_die);
2279                                     else
2280                                     {
2281                                         if (m_using_apple_tables)
2282                                         {
2283                                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
2284                                                                                                        die_offset, class_str.c_str());
2285                                         }
2286                                     }
2287                                 }
2288                             }
2289 
2290                             for (DelayedPropertyList::const_iterator pi = delayed_properties.begin(), pe = delayed_properties.end();
2291                                  pi != pe;
2292                                  ++pi)
2293                                 pi->Finalize();
2294                         }
2295                     }
2296 
2297                     // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2298                     // need to tell the clang type it is actually a class.
2299                     if (class_language != eLanguageTypeObjC)
2300                     {
2301                         if (is_a_class && tag_decl_kind != clang::TTK_Class)
2302                             ast.SetTagTypeKind (clang_type, clang::TTK_Class);
2303                     }
2304 
2305                     // Since DW_TAG_structure_type gets used for both classes
2306                     // and structures, we may need to set any DW_TAG_member
2307                     // fields to have a "private" access if none was specified.
2308                     // When we parsed the child members we tracked that actual
2309                     // accessibility value for each DW_TAG_member in the
2310                     // "member_accessibilities" array. If the value for the
2311                     // member is zero, then it was set to the "default_accessibility"
2312                     // which for structs was "public". Below we correct this
2313                     // by setting any fields to "private" that weren't correctly
2314                     // set.
2315                     if (is_a_class && !member_accessibilities.empty())
2316                     {
2317                         // This is a class and all members that didn't have
2318                         // their access specified are private.
2319                         ast.SetDefaultAccessForRecordFields (clang_type,
2320                                                              eAccessPrivate,
2321                                                              &member_accessibilities.front(),
2322                                                              member_accessibilities.size());
2323                     }
2324 
2325                     if (!base_classes.empty())
2326                     {
2327                         ast.SetBaseClassesForClassType (clang_type,
2328                                                         &base_classes.front(),
2329                                                         base_classes.size());
2330 
2331                         // Clang will copy each CXXBaseSpecifier in "base_classes"
2332                         // so we have to free them all.
2333                         ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(),
2334                                                                     base_classes.size());
2335                     }
2336                 }
2337             }
2338 
2339             ast.BuildIndirectFields (clang_type);
2340 
2341             ast.CompleteTagDeclarationDefinition (clang_type);
2342 
2343             if (!layout_info.field_offsets.empty() ||
2344                 !layout_info.base_offsets.empty()  ||
2345                 !layout_info.vbase_offsets.empty() )
2346             {
2347                 if (type)
2348                     layout_info.bit_size = type->GetByteSize() * 8;
2349                 if (layout_info.bit_size == 0)
2350                     layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
2351 
2352                 clang::CXXRecordDecl *record_decl = ClangASTType::GetAsCXXRecordDecl(clang_type);
2353                 if (record_decl)
2354                 {
2355                     if (log)
2356                     {
2357                         GetObjectFile()->GetModule()->LogMessage (log,
2358                                                                   "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])",
2359                                                                   clang_type,
2360                                                                   record_decl,
2361                                                                   layout_info.bit_size,
2362                                                                   layout_info.alignment,
2363                                                                   (uint32_t)layout_info.field_offsets.size(),
2364                                                                   (uint32_t)layout_info.base_offsets.size(),
2365                                                                   (uint32_t)layout_info.vbase_offsets.size());
2366 
2367                         uint32_t idx;
2368                         {
2369                         llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
2370                         for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx)
2371                         {
2372                             GetObjectFile()->GetModule()->LogMessage (log,
2373                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }",
2374                                                                       clang_type,
2375                                                                       idx,
2376                                                                       (uint32_t)pos->second,
2377                                                                       pos->first->getNameAsString().c_str());
2378                         }
2379                         }
2380 
2381                         {
2382                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end();
2383                         for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx)
2384                         {
2385                             GetObjectFile()->GetModule()->LogMessage (log,
2386                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }",
2387                                                                       clang_type,
2388                                                                       idx,
2389                                                                       (uint32_t)base_pos->second.getQuantity(),
2390                                                                       base_pos->first->getNameAsString().c_str());
2391                         }
2392                         }
2393                         {
2394                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end();
2395                         for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx)
2396                         {
2397                             GetObjectFile()->GetModule()->LogMessage (log,
2398                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }",
2399                                                                       clang_type,
2400                                                                       idx,
2401                                                                       (uint32_t)vbase_pos->second.getQuantity(),
2402                                                                       vbase_pos->first->getNameAsString().c_str());
2403                         }
2404                         }
2405                     }
2406                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
2407                 }
2408             }
2409         }
2410 
2411         return clang_type;
2412 
2413     case DW_TAG_enumeration_type:
2414         ast.StartTagDeclarationDefinition (clang_type);
2415         if (die->HasChildren())
2416         {
2417             SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2418             bool is_signed = false;
2419             ast.IsIntegerType(clang_type, is_signed);
2420             ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die);
2421         }
2422         ast.CompleteTagDeclarationDefinition (clang_type);
2423         return clang_type;
2424 
2425     default:
2426         assert(false && "not a forward clang type decl!");
2427         break;
2428     }
2429     return NULL;
2430 }
2431 
2432 Type*
2433 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
2434 {
2435     if (type_die != NULL)
2436     {
2437         Type *type = m_die_to_type.lookup (type_die);
2438 
2439         if (type == NULL)
2440             type = GetTypeForDIE (dwarf_cu, type_die).get();
2441 
2442         if (assert_not_being_parsed)
2443         {
2444             if (type != DIE_IS_BEING_PARSED)
2445                 return type;
2446 
2447             GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
2448                                                        type_die->GetOffset(),
2449                                                        DW_TAG_value_to_name(type_die->Tag()),
2450                                                        type_die->GetName(this, dwarf_cu));
2451 
2452         }
2453         else
2454             return type;
2455     }
2456     return NULL;
2457 }
2458 
2459 CompileUnit*
2460 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
2461 {
2462     // Check if the symbol vendor already knows about this compile unit?
2463     if (dwarf_cu->GetUserData() == NULL)
2464     {
2465         // The symbol vendor doesn't know about this compile unit, we
2466         // need to parse and add it to the symbol vendor object.
2467         return ParseCompileUnit(dwarf_cu, cu_idx).get();
2468     }
2469     return (CompileUnit*)dwarf_cu->GetUserData();
2470 }
2471 
2472 bool
2473 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
2474 {
2475     sc.Clear(false);
2476     // Check if the symbol vendor already knows about this compile unit?
2477     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
2478 
2479     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
2480     if (sc.function == NULL)
2481         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
2482 
2483     if (sc.function)
2484     {
2485         sc.module_sp = sc.function->CalculateSymbolContextModule();
2486         return true;
2487     }
2488 
2489     return false;
2490 }
2491 
2492 uint32_t
2493 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
2494 {
2495     Timer scoped_timer(__PRETTY_FUNCTION__,
2496                        "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)",
2497                        so_addr.GetSection().get(),
2498                        so_addr.GetOffset(),
2499                        resolve_scope);
2500     uint32_t resolved = 0;
2501     if (resolve_scope & (   eSymbolContextCompUnit |
2502                             eSymbolContextFunction |
2503                             eSymbolContextBlock |
2504                             eSymbolContextLineEntry))
2505     {
2506         lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
2507 
2508         DWARFDebugInfo* debug_info = DebugInfo();
2509         if (debug_info)
2510         {
2511             const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
2512             if (cu_offset != DW_INVALID_OFFSET)
2513             {
2514                 uint32_t cu_idx = DW_INVALID_INDEX;
2515                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
2516                 if (dwarf_cu)
2517                 {
2518                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2519                     if (sc.comp_unit)
2520                     {
2521                         resolved |= eSymbolContextCompUnit;
2522 
2523                         bool force_check_line_table = false;
2524                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2525                         {
2526                             DWARFDebugInfoEntry *function_die = NULL;
2527                             DWARFDebugInfoEntry *block_die = NULL;
2528                             if (resolve_scope & eSymbolContextBlock)
2529                             {
2530                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
2531                             }
2532                             else
2533                             {
2534                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL);
2535                             }
2536 
2537                             if (function_die != NULL)
2538                             {
2539                                 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2540                                 if (sc.function == NULL)
2541                                     sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2542                             }
2543                             else
2544                             {
2545                                 // We might have had a compile unit that had discontiguous
2546                                 // address ranges where the gaps are symbols that don't have
2547                                 // any debug info. Discontiguous compile unit address ranges
2548                                 // should only happen when there aren't other functions from
2549                                 // other compile units in these gaps. This helps keep the size
2550                                 // of the aranges down.
2551                                 force_check_line_table = true;
2552                             }
2553 
2554                             if (sc.function != NULL)
2555                             {
2556                                 resolved |= eSymbolContextFunction;
2557 
2558                                 if (resolve_scope & eSymbolContextBlock)
2559                                 {
2560                                     Block& block = sc.function->GetBlock (true);
2561 
2562                                     if (block_die != NULL)
2563                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2564                                     else
2565                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2566                                     if (sc.block)
2567                                         resolved |= eSymbolContextBlock;
2568                                 }
2569                             }
2570                         }
2571 
2572                         if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table)
2573                         {
2574                             LineTable *line_table = sc.comp_unit->GetLineTable();
2575                             if (line_table != NULL)
2576                             {
2577                                 // And address that makes it into this function should be in terms
2578                                 // of this debug file if there is no debug map, or it will be an
2579                                 // address in the .o file which needs to be fixed up to be in terms
2580                                 // of the debug map executable. Either way, calling FixupAddress()
2581                                 // will work for us.
2582                                 Address exe_so_addr (so_addr);
2583                                 if (FixupAddress(exe_so_addr))
2584                                 {
2585                                     if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry))
2586                                     {
2587                                         resolved |= eSymbolContextLineEntry;
2588                                     }
2589                                 }
2590                             }
2591                         }
2592 
2593                         if (force_check_line_table && !(resolved & eSymbolContextLineEntry))
2594                         {
2595                             // We might have had a compile unit that had discontiguous
2596                             // address ranges where the gaps are symbols that don't have
2597                             // any debug info. Discontiguous compile unit address ranges
2598                             // should only happen when there aren't other functions from
2599                             // other compile units in these gaps. This helps keep the size
2600                             // of the aranges down.
2601                             sc.comp_unit = NULL;
2602                             resolved &= ~eSymbolContextCompUnit;
2603                         }
2604                     }
2605                     else
2606                     {
2607                         GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.",
2608                                                                      cu_offset,
2609                                                                      cu_idx);
2610                     }
2611                 }
2612             }
2613         }
2614     }
2615     return resolved;
2616 }
2617 
2618 
2619 
2620 uint32_t
2621 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
2622 {
2623     const uint32_t prev_size = sc_list.GetSize();
2624     if (resolve_scope & eSymbolContextCompUnit)
2625     {
2626         DWARFDebugInfo* debug_info = DebugInfo();
2627         if (debug_info)
2628         {
2629             uint32_t cu_idx;
2630             DWARFCompileUnit* dwarf_cu = NULL;
2631 
2632             for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx)
2633             {
2634                 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2635                 const bool full_match = file_spec.GetDirectory();
2636                 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match);
2637                 if (check_inlines || file_spec_matches_cu_file_spec)
2638                 {
2639                     SymbolContext sc (m_obj_file->GetModule());
2640                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2641                     if (sc.comp_unit)
2642                     {
2643                         uint32_t file_idx = UINT32_MAX;
2644 
2645                         // If we are looking for inline functions only and we don't
2646                         // find it in the support files, we are done.
2647                         if (check_inlines)
2648                         {
2649                             file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2650                             if (file_idx == UINT32_MAX)
2651                                 continue;
2652                         }
2653 
2654                         if (line != 0)
2655                         {
2656                             LineTable *line_table = sc.comp_unit->GetLineTable();
2657 
2658                             if (line_table != NULL && line != 0)
2659                             {
2660                                 // We will have already looked up the file index if
2661                                 // we are searching for inline entries.
2662                                 if (!check_inlines)
2663                                     file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2664 
2665                                 if (file_idx != UINT32_MAX)
2666                                 {
2667                                     uint32_t found_line;
2668                                     uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
2669                                     found_line = sc.line_entry.line;
2670 
2671                                     while (line_idx != UINT32_MAX)
2672                                     {
2673                                         sc.function = NULL;
2674                                         sc.block = NULL;
2675                                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2676                                         {
2677                                             const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
2678                                             if (file_vm_addr != LLDB_INVALID_ADDRESS)
2679                                             {
2680                                                 DWARFDebugInfoEntry *function_die = NULL;
2681                                                 DWARFDebugInfoEntry *block_die = NULL;
2682                                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL);
2683 
2684                                                 if (function_die != NULL)
2685                                                 {
2686                                                     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2687                                                     if (sc.function == NULL)
2688                                                         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2689                                                 }
2690 
2691                                                 if (sc.function != NULL)
2692                                                 {
2693                                                     Block& block = sc.function->GetBlock (true);
2694 
2695                                                     if (block_die != NULL)
2696                                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2697                                                     else
2698                                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2699                                                 }
2700                                             }
2701                                         }
2702 
2703                                         sc_list.Append(sc);
2704                                         line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
2705                                     }
2706                                 }
2707                             }
2708                             else if (file_spec_matches_cu_file_spec && !check_inlines)
2709                             {
2710                                 // only append the context if we aren't looking for inline call sites
2711                                 // by file and line and if the file spec matches that of the compile unit
2712                                 sc_list.Append(sc);
2713                             }
2714                         }
2715                         else if (file_spec_matches_cu_file_spec && !check_inlines)
2716                         {
2717                             // only append the context if we aren't looking for inline call sites
2718                             // by file and line and if the file spec matches that of the compile unit
2719                             sc_list.Append(sc);
2720                         }
2721 
2722                         if (!check_inlines)
2723                             break;
2724                     }
2725                 }
2726             }
2727         }
2728     }
2729     return sc_list.GetSize() - prev_size;
2730 }
2731 
2732 void
2733 SymbolFileDWARF::Index ()
2734 {
2735     if (m_indexed)
2736         return;
2737     m_indexed = true;
2738     Timer scoped_timer (__PRETTY_FUNCTION__,
2739                         "SymbolFileDWARF::Index (%s)",
2740                         GetObjectFile()->GetFileSpec().GetFilename().AsCString());
2741 
2742     DWARFDebugInfo* debug_info = DebugInfo();
2743     if (debug_info)
2744     {
2745         uint32_t cu_idx = 0;
2746         const uint32_t num_compile_units = GetNumCompileUnits();
2747         for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
2748         {
2749             DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
2750 
2751             bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
2752 
2753             dwarf_cu->Index (cu_idx,
2754                              m_function_basename_index,
2755                              m_function_fullname_index,
2756                              m_function_method_index,
2757                              m_function_selector_index,
2758                              m_objc_class_selectors_index,
2759                              m_global_index,
2760                              m_type_index,
2761                              m_namespace_index);
2762 
2763             // Keep memory down by clearing DIEs if this generate function
2764             // caused them to be parsed
2765             if (clear_dies)
2766                 dwarf_cu->ClearDIEs (true);
2767         }
2768 
2769         m_function_basename_index.Finalize();
2770         m_function_fullname_index.Finalize();
2771         m_function_method_index.Finalize();
2772         m_function_selector_index.Finalize();
2773         m_objc_class_selectors_index.Finalize();
2774         m_global_index.Finalize();
2775         m_type_index.Finalize();
2776         m_namespace_index.Finalize();
2777 
2778 #if defined (ENABLE_DEBUG_PRINTF)
2779         StreamFile s(stdout, false);
2780         s.Printf ("DWARF index for '%s/%s':",
2781                   GetObjectFile()->GetFileSpec().GetDirectory().AsCString(),
2782                   GetObjectFile()->GetFileSpec().GetFilename().AsCString());
2783         s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
2784         s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
2785         s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
2786         s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
2787         s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
2788         s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
2789         s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
2790         s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
2791 #endif
2792     }
2793 }
2794 
2795 bool
2796 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
2797 {
2798     if (namespace_decl == NULL)
2799     {
2800         // Invalid namespace decl which means we aren't matching only things
2801         // in this symbol file, so return true to indicate it matches this
2802         // symbol file.
2803         return true;
2804     }
2805 
2806     clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
2807 
2808     if (namespace_ast == NULL)
2809         return true;    // No AST in the "namespace_decl", return true since it
2810                         // could then match any symbol file, including this one
2811 
2812     if (namespace_ast == GetClangASTContext().getASTContext())
2813         return true;    // The ASTs match, return true
2814 
2815     // The namespace AST was valid, and it does not match...
2816     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2817 
2818     if (log)
2819         GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file");
2820 
2821     return false;
2822 }
2823 
2824 bool
2825 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
2826                                    DWARFCompileUnit* cu,
2827                                    const DWARFDebugInfoEntry* die)
2828 {
2829     // No namespace specified, so the answesr i
2830     if (namespace_decl == NULL)
2831         return true;
2832 
2833     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2834 
2835     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
2836     clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
2837     if (decl_ctx_die)
2838     {
2839         clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
2840 
2841         if (clang_namespace_decl)
2842         {
2843             if (decl_ctx_die->Tag() != DW_TAG_namespace)
2844             {
2845                 if (log)
2846                     GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace");
2847                 return false;
2848             }
2849 
2850             if (clang_namespace_decl == die_clang_decl_ctx)
2851                 return true;
2852             else
2853                 return false;
2854         }
2855         else
2856         {
2857             // We have a namespace_decl that was not NULL but it contained
2858             // a NULL "clang::NamespaceDecl", so this means the global namespace
2859             // So as long the the contained decl context DIE isn't a namespace
2860             // we should be ok.
2861             if (decl_ctx_die->Tag() != DW_TAG_namespace)
2862                 return true;
2863         }
2864     }
2865 
2866     if (log)
2867         GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist");
2868 
2869     return false;
2870 }
2871 uint32_t
2872 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
2873 {
2874     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2875 
2876     if (log)
2877     {
2878         GetObjectFile()->GetModule()->LogMessage (log,
2879                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
2880                                                   name.GetCString(),
2881                                                   namespace_decl,
2882                                                   append,
2883                                                   max_matches);
2884     }
2885 
2886     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
2887 		return 0;
2888 
2889     DWARFDebugInfo* info = DebugInfo();
2890     if (info == NULL)
2891         return 0;
2892 
2893     // If we aren't appending the results to this list, then clear the list
2894     if (!append)
2895         variables.Clear();
2896 
2897     // Remember how many variables are in the list before we search in case
2898     // we are appending the results to a variable list.
2899     const uint32_t original_size = variables.GetSize();
2900 
2901     DIEArray die_offsets;
2902 
2903     if (m_using_apple_tables)
2904     {
2905         if (m_apple_names_ap.get())
2906         {
2907             const char *name_cstr = name.GetCString();
2908             const char *base_name_start;
2909             const char *base_name_end = NULL;
2910 
2911             if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
2912                 base_name_start = name_cstr;
2913 
2914             m_apple_names_ap->FindByName (base_name_start, die_offsets);
2915         }
2916     }
2917     else
2918     {
2919         // Index the DWARF if we haven't already
2920         if (!m_indexed)
2921             Index ();
2922 
2923         m_global_index.Find (name, die_offsets);
2924     }
2925 
2926     const size_t num_die_matches = die_offsets.size();
2927     if (num_die_matches)
2928     {
2929         SymbolContext sc;
2930         sc.module_sp = m_obj_file->GetModule();
2931         assert (sc.module_sp);
2932 
2933         DWARFDebugInfo* debug_info = DebugInfo();
2934         DWARFCompileUnit* dwarf_cu = NULL;
2935         const DWARFDebugInfoEntry* die = NULL;
2936         bool done = false;
2937         for (size_t i=0; i<num_die_matches && !done; ++i)
2938         {
2939             const dw_offset_t die_offset = die_offsets[i];
2940             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
2941 
2942             if (die)
2943             {
2944                 switch (die->Tag())
2945                 {
2946                     default:
2947                     case DW_TAG_subprogram:
2948                     case DW_TAG_inlined_subroutine:
2949                     case DW_TAG_try_block:
2950                     case DW_TAG_catch_block:
2951                         break;
2952 
2953                     case DW_TAG_variable:
2954                         {
2955                             sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
2956 
2957                             if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
2958                                 continue;
2959 
2960                             ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
2961 
2962                             if (variables.GetSize() - original_size >= max_matches)
2963                                 done = true;
2964                         }
2965                         break;
2966                 }
2967             }
2968             else
2969             {
2970                 if (m_using_apple_tables)
2971                 {
2972                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
2973                                                                                die_offset, name.GetCString());
2974                 }
2975             }
2976         }
2977     }
2978 
2979     // Return the number of variable that were appended to the list
2980     const uint32_t num_matches = variables.GetSize() - original_size;
2981     if (log && num_matches > 0)
2982     {
2983         GetObjectFile()->GetModule()->LogMessage (log,
2984                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
2985                                                   name.GetCString(),
2986                                                   namespace_decl,
2987                                                   append,
2988                                                   max_matches,
2989                                                   num_matches);
2990     }
2991     return num_matches;
2992 }
2993 
2994 uint32_t
2995 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
2996 {
2997     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
2998 
2999     if (log)
3000     {
3001         GetObjectFile()->GetModule()->LogMessage (log,
3002                                                   "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
3003                                                   regex.GetText(),
3004                                                   append,
3005                                                   max_matches);
3006     }
3007 
3008     DWARFDebugInfo* info = DebugInfo();
3009     if (info == NULL)
3010         return 0;
3011 
3012     // If we aren't appending the results to this list, then clear the list
3013     if (!append)
3014         variables.Clear();
3015 
3016     // Remember how many variables are in the list before we search in case
3017     // we are appending the results to a variable list.
3018     const uint32_t original_size = variables.GetSize();
3019 
3020     DIEArray die_offsets;
3021 
3022     if (m_using_apple_tables)
3023     {
3024         if (m_apple_names_ap.get())
3025         {
3026             DWARFMappedHash::DIEInfoArray hash_data_array;
3027             if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3028                 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3029         }
3030     }
3031     else
3032     {
3033         // Index the DWARF if we haven't already
3034         if (!m_indexed)
3035             Index ();
3036 
3037         m_global_index.Find (regex, die_offsets);
3038     }
3039 
3040     SymbolContext sc;
3041     sc.module_sp = m_obj_file->GetModule();
3042     assert (sc.module_sp);
3043 
3044     DWARFCompileUnit* dwarf_cu = NULL;
3045     const DWARFDebugInfoEntry* die = NULL;
3046     const size_t num_matches = die_offsets.size();
3047     if (num_matches)
3048     {
3049         DWARFDebugInfo* debug_info = DebugInfo();
3050         for (size_t i=0; i<num_matches; ++i)
3051         {
3052             const dw_offset_t die_offset = die_offsets[i];
3053             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3054 
3055             if (die)
3056             {
3057                 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3058 
3059                 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3060 
3061                 if (variables.GetSize() - original_size >= max_matches)
3062                     break;
3063             }
3064             else
3065             {
3066                 if (m_using_apple_tables)
3067                 {
3068                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
3069                                                                                die_offset, regex.GetText());
3070                 }
3071             }
3072         }
3073     }
3074 
3075     // Return the number of variable that were appended to the list
3076     return variables.GetSize() - original_size;
3077 }
3078 
3079 
3080 bool
3081 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
3082                                   DWARFCompileUnit *&dwarf_cu,
3083                                   SymbolContextList& sc_list)
3084 {
3085     const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3086     return ResolveFunction (dwarf_cu, die, sc_list);
3087 }
3088 
3089 
3090 bool
3091 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
3092                                   const DWARFDebugInfoEntry *die,
3093                                   SymbolContextList& sc_list)
3094 {
3095     SymbolContext sc;
3096 
3097     if (die == NULL)
3098         return false;
3099 
3100     // If we were passed a die that is not a function, just return false...
3101     if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
3102         return false;
3103 
3104     const DWARFDebugInfoEntry* inlined_die = NULL;
3105     if (die->Tag() == DW_TAG_inlined_subroutine)
3106     {
3107         inlined_die = die;
3108 
3109         while ((die = die->GetParent()) != NULL)
3110         {
3111             if (die->Tag() == DW_TAG_subprogram)
3112                 break;
3113         }
3114     }
3115     assert (die->Tag() == DW_TAG_subprogram);
3116     if (GetFunction (cu, die, sc))
3117     {
3118         Address addr;
3119         // Parse all blocks if needed
3120         if (inlined_die)
3121         {
3122             sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
3123             assert (sc.block != NULL);
3124             if (sc.block->GetStartAddress (addr) == false)
3125                 addr.Clear();
3126         }
3127         else
3128         {
3129             sc.block = NULL;
3130             addr = sc.function->GetAddressRange().GetBaseAddress();
3131         }
3132 
3133         if (addr.IsValid())
3134         {
3135             sc_list.Append(sc);
3136             return true;
3137         }
3138     }
3139 
3140     return false;
3141 }
3142 
3143 void
3144 SymbolFileDWARF::FindFunctions (const ConstString &name,
3145                                 const NameToDIE &name_to_die,
3146                                 SymbolContextList& sc_list)
3147 {
3148     DIEArray die_offsets;
3149     if (name_to_die.Find (name, die_offsets))
3150     {
3151         ParseFunctions (die_offsets, sc_list);
3152     }
3153 }
3154 
3155 
3156 void
3157 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3158                                 const NameToDIE &name_to_die,
3159                                 SymbolContextList& sc_list)
3160 {
3161     DIEArray die_offsets;
3162     if (name_to_die.Find (regex, die_offsets))
3163     {
3164         ParseFunctions (die_offsets, sc_list);
3165     }
3166 }
3167 
3168 
3169 void
3170 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3171                                 const DWARFMappedHash::MemoryTable &memory_table,
3172                                 SymbolContextList& sc_list)
3173 {
3174     DIEArray die_offsets;
3175     DWARFMappedHash::DIEInfoArray hash_data_array;
3176     if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3177     {
3178         DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3179         ParseFunctions (die_offsets, sc_list);
3180     }
3181 }
3182 
3183 void
3184 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
3185                                  SymbolContextList& sc_list)
3186 {
3187     const size_t num_matches = die_offsets.size();
3188     if (num_matches)
3189     {
3190         SymbolContext sc;
3191 
3192         DWARFCompileUnit* dwarf_cu = NULL;
3193         for (size_t i=0; i<num_matches; ++i)
3194         {
3195             const dw_offset_t die_offset = die_offsets[i];
3196             ResolveFunction (die_offset, dwarf_cu, sc_list);
3197         }
3198     }
3199 }
3200 
3201 bool
3202 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
3203                                                 const DWARFCompileUnit *dwarf_cu,
3204                                                 uint32_t name_type_mask,
3205                                                 const char *partial_name,
3206                                                 const char *base_name_start,
3207                                                 const char *base_name_end)
3208 {
3209     // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes:
3210     if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase)
3211     {
3212         clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
3213         if (!containing_decl_ctx)
3214             return false;
3215 
3216         bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
3217 
3218         if (name_type_mask == eFunctionNameTypeMethod)
3219         {
3220             if (is_cxx_method == false)
3221                 return false;
3222         }
3223 
3224         if (name_type_mask == eFunctionNameTypeBase)
3225         {
3226             if (is_cxx_method == true)
3227                 return false;
3228         }
3229     }
3230 
3231     // Now we need to check whether the name we got back for this type matches the extra specifications
3232     // that were in the name we're looking up:
3233     if (base_name_start != partial_name || *base_name_end != '\0')
3234     {
3235         // First see if the stuff to the left matches the full name.  To do that let's see if
3236         // we can pull out the mips linkage name attribute:
3237 
3238         Mangled best_name;
3239         DWARFDebugInfoEntry::Attributes attributes;
3240         DWARFFormValue form_value;
3241         die->GetAttributes(this, dwarf_cu, NULL, attributes);
3242         uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
3243         if (idx == UINT32_MAX)
3244             idx = attributes.FindAttributeIndex(DW_AT_linkage_name);
3245         if (idx != UINT32_MAX)
3246         {
3247             if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
3248             {
3249                 const char *mangled_name = form_value.AsCString(&get_debug_str_data());
3250                 if (mangled_name)
3251                     best_name.SetValue (ConstString(mangled_name), true);
3252             }
3253         }
3254 
3255         if (!best_name)
3256         {
3257             idx = attributes.FindAttributeIndex(DW_AT_name);
3258             if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value))
3259             {
3260                 const char *name = form_value.AsCString(&get_debug_str_data());
3261                 best_name.SetValue (ConstString(name), false);
3262             }
3263         }
3264 
3265         if (best_name.GetDemangledName())
3266         {
3267             const char *demangled = best_name.GetDemangledName().GetCString();
3268             if (demangled)
3269             {
3270                 std::string name_no_parens(partial_name, base_name_end - partial_name);
3271                 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
3272                 if (partial_in_demangled == NULL)
3273                     return false;
3274                 else
3275                 {
3276                     // Sort out the case where our name is something like "Process::Destroy" and the match is
3277                     // "SBProcess::Destroy" - that shouldn't be a match.  We should really always match on
3278                     // namespace boundaries...
3279 
3280                     if (partial_name[0] == ':'  && partial_name[1] == ':')
3281                     {
3282                         // The partial name was already on a namespace boundary so all matches are good.
3283                         return true;
3284                     }
3285                     else if (partial_in_demangled == demangled)
3286                     {
3287                         // They both start the same, so this is an good match.
3288                         return true;
3289                     }
3290                     else
3291                     {
3292                         if (partial_in_demangled - demangled == 1)
3293                         {
3294                             // Only one character difference, can't be a namespace boundary...
3295                             return false;
3296                         }
3297                         else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
3298                         {
3299                             // We are on a namespace boundary, so this is also good.
3300                             return true;
3301                         }
3302                         else
3303                             return false;
3304                     }
3305                 }
3306             }
3307         }
3308     }
3309 
3310     return true;
3311 }
3312 
3313 uint32_t
3314 SymbolFileDWARF::FindFunctions (const ConstString &name,
3315                                 const lldb_private::ClangNamespaceDecl *namespace_decl,
3316                                 uint32_t name_type_mask,
3317                                 bool include_inlines,
3318                                 bool append,
3319                                 SymbolContextList& sc_list)
3320 {
3321     Timer scoped_timer (__PRETTY_FUNCTION__,
3322                         "SymbolFileDWARF::FindFunctions (name = '%s')",
3323                         name.AsCString());
3324 
3325     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3326 
3327     if (log)
3328     {
3329         GetObjectFile()->GetModule()->LogMessage (log,
3330                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
3331                                                   name.GetCString(),
3332                                                   name_type_mask,
3333                                                   append);
3334     }
3335 
3336     // If we aren't appending the results to this list, then clear the list
3337     if (!append)
3338         sc_list.Clear();
3339 
3340     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3341 		return 0;
3342 
3343     // If name is empty then we won't find anything.
3344     if (name.IsEmpty())
3345         return 0;
3346 
3347     // Remember how many sc_list are in the list before we search in case
3348     // we are appending the results to a variable list.
3349 
3350     const uint32_t original_size = sc_list.GetSize();
3351 
3352     const char *name_cstr = name.GetCString();
3353     uint32_t effective_name_type_mask = eFunctionNameTypeNone;
3354     const char *base_name_start = name_cstr;
3355     const char *base_name_end = name_cstr + strlen(name_cstr);
3356 
3357     if (name_type_mask & eFunctionNameTypeAuto)
3358     {
3359         if (CPPLanguageRuntime::IsCPPMangledName (name_cstr))
3360             effective_name_type_mask = eFunctionNameTypeFull;
3361         else if (ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr))
3362             effective_name_type_mask = eFunctionNameTypeFull;
3363         else
3364         {
3365             if (ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr))
3366                 effective_name_type_mask |= eFunctionNameTypeSelector;
3367 
3368             if (CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end))
3369                 effective_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
3370         }
3371     }
3372     else
3373     {
3374         effective_name_type_mask = name_type_mask;
3375         if (effective_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase)
3376         {
3377             // If they've asked for a CPP method or function name and it can't be that, we don't
3378             // even need to search for CPP methods or names.
3379             if (!CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end))
3380             {
3381                 effective_name_type_mask &= ~(eFunctionNameTypeMethod | eFunctionNameTypeBase);
3382                 if (effective_name_type_mask == eFunctionNameTypeNone)
3383                     return 0;
3384             }
3385         }
3386 
3387         if (effective_name_type_mask & eFunctionNameTypeSelector)
3388         {
3389             if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr))
3390             {
3391                 effective_name_type_mask &= ~(eFunctionNameTypeSelector);
3392                 if (effective_name_type_mask == eFunctionNameTypeNone)
3393                     return 0;
3394             }
3395         }
3396     }
3397 
3398     DWARFDebugInfo* info = DebugInfo();
3399     if (info == NULL)
3400         return 0;
3401 
3402     DWARFCompileUnit *dwarf_cu = NULL;
3403     if (m_using_apple_tables)
3404     {
3405         if (m_apple_names_ap.get())
3406         {
3407 
3408             DIEArray die_offsets;
3409 
3410             uint32_t num_matches = 0;
3411 
3412             if (effective_name_type_mask & eFunctionNameTypeFull)
3413             {
3414                 // If they asked for the full name, match what they typed.  At some point we may
3415                 // want to canonicalize this (strip double spaces, etc.  For now, we just add all the
3416                 // dies that we find by exact match.
3417                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3418                 for (uint32_t i = 0; i < num_matches; i++)
3419                 {
3420                     const dw_offset_t die_offset = die_offsets[i];
3421                     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3422                     if (die)
3423                     {
3424                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3425                             continue;
3426 
3427                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3428                             continue;
3429 
3430                         ResolveFunction (dwarf_cu, die, sc_list);
3431                     }
3432                     else
3433                     {
3434                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3435                                                                                    die_offset, name_cstr);
3436                     }
3437                 }
3438             }
3439             else
3440             {
3441                 if (effective_name_type_mask & eFunctionNameTypeSelector)
3442                 {
3443                     if (namespace_decl && *namespace_decl)
3444                         return 0; // no selectors in namespaces
3445 
3446                     num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3447                     // Now make sure these are actually ObjC methods.  In this case we can simply look up the name,
3448                     // and if it is an ObjC method name, we're good.
3449 
3450                     for (uint32_t i = 0; i < num_matches; i++)
3451                     {
3452                         const dw_offset_t die_offset = die_offsets[i];
3453                         const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3454                         if (die)
3455                         {
3456                             const char *die_name = die->GetName(this, dwarf_cu);
3457                             if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
3458                             {
3459                                 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3460                                     continue;
3461 
3462                                 ResolveFunction (dwarf_cu, die, sc_list);
3463                             }
3464                         }
3465                         else
3466                         {
3467                             GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3468                                                                        die_offset, name_cstr);
3469                         }
3470                     }
3471                     die_offsets.clear();
3472                 }
3473 
3474                 if (effective_name_type_mask & eFunctionNameTypeMethod
3475                     || effective_name_type_mask & eFunctionNameTypeBase)
3476                 {
3477                     if ((effective_name_type_mask & eFunctionNameTypeMethod) &&
3478                         (namespace_decl && *namespace_decl))
3479                         return 0; // no methods in namespaces
3480 
3481                     // The apple_names table stores just the "base name" of C++ methods in the table.  So we have to
3482                     // extract the base name, look that up, and if there is any other information in the name we were
3483                     // passed in we have to post-filter based on that.
3484 
3485                     // FIXME: Arrange the logic above so that we don't calculate the base name twice:
3486                     std::string base_name(base_name_start, base_name_end - base_name_start);
3487                     num_matches = m_apple_names_ap->FindByName (base_name.c_str(), die_offsets);
3488 
3489                     for (uint32_t i = 0; i < num_matches; i++)
3490                     {
3491                         const dw_offset_t die_offset = die_offsets[i];
3492                         const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3493                         if (die)
3494                         {
3495                             if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3496                                 continue;
3497 
3498                             if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3499                                 continue;
3500 
3501                             if (!FunctionDieMatchesPartialName(die,
3502                                                                dwarf_cu,
3503                                                                effective_name_type_mask,
3504                                                                name_cstr,
3505                                                                base_name_start,
3506                                                                base_name_end))
3507                                 continue;
3508 
3509                             // If we get to here, the die is good, and we should add it:
3510                             ResolveFunction (dwarf_cu, die, sc_list);
3511                         }
3512                         else
3513                         {
3514                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3515                                                                                        die_offset, name_cstr);
3516                         }
3517                     }
3518                     die_offsets.clear();
3519                 }
3520             }
3521         }
3522     }
3523     else
3524     {
3525 
3526         // Index the DWARF if we haven't already
3527         if (!m_indexed)
3528             Index ();
3529 
3530         if (name_type_mask & eFunctionNameTypeFull)
3531             FindFunctions (name, m_function_fullname_index, sc_list);
3532 
3533         std::string base_name(base_name_start, base_name_end - base_name_start);
3534         ConstString base_name_const(base_name.c_str());
3535         DIEArray die_offsets;
3536         DWARFCompileUnit *dwarf_cu = NULL;
3537 
3538         if (effective_name_type_mask & eFunctionNameTypeBase)
3539         {
3540             uint32_t num_base = m_function_basename_index.Find(base_name_const, die_offsets);
3541             for (uint32_t i = 0; i < num_base; i++)
3542             {
3543                 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3544                 if (die)
3545                 {
3546                     if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3547                         continue;
3548 
3549                     if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3550                         continue;
3551 
3552                     if (!FunctionDieMatchesPartialName(die,
3553                                                        dwarf_cu,
3554                                                        eFunctionNameTypeBase,
3555                                                        name_cstr,
3556                                                        base_name_start,
3557                                                        base_name_end))
3558                         continue;
3559 
3560                     // If we get to here, the die is good, and we should add it:
3561                     ResolveFunction (dwarf_cu, die, sc_list);
3562                 }
3563             }
3564             die_offsets.clear();
3565         }
3566 
3567         if (effective_name_type_mask & eFunctionNameTypeMethod)
3568         {
3569             if (namespace_decl && *namespace_decl)
3570                 return 0; // no methods in namespaces
3571 
3572             uint32_t num_base = m_function_method_index.Find(base_name_const, die_offsets);
3573             {
3574                 for (uint32_t i = 0; i < num_base; i++)
3575                 {
3576                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3577                     if (die)
3578                     {
3579                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3580                             continue;
3581 
3582                         if (!FunctionDieMatchesPartialName(die,
3583                                                            dwarf_cu,
3584                                                            eFunctionNameTypeMethod,
3585                                                            name_cstr,
3586                                                            base_name_start,
3587                                                            base_name_end))
3588                             continue;
3589 
3590                         // If we get to here, the die is good, and we should add it:
3591                         ResolveFunction (dwarf_cu, die, sc_list);
3592                     }
3593                 }
3594             }
3595             die_offsets.clear();
3596         }
3597 
3598         if ((effective_name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
3599         {
3600             FindFunctions (name, m_function_selector_index, sc_list);
3601         }
3602 
3603     }
3604 
3605     // Return the number of variable that were appended to the list
3606     const uint32_t num_matches = sc_list.GetSize() - original_size;
3607 
3608     if (log && num_matches > 0)
3609     {
3610         GetObjectFile()->GetModule()->LogMessage (log,
3611                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
3612                                                   name.GetCString(),
3613                                                   name_type_mask,
3614                                                   append,
3615                                                   num_matches);
3616     }
3617     return num_matches;
3618 }
3619 
3620 uint32_t
3621 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
3622 {
3623     Timer scoped_timer (__PRETTY_FUNCTION__,
3624                         "SymbolFileDWARF::FindFunctions (regex = '%s')",
3625                         regex.GetText());
3626 
3627     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3628 
3629     if (log)
3630     {
3631         GetObjectFile()->GetModule()->LogMessage (log,
3632                                                   "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
3633                                                   regex.GetText(),
3634                                                   append);
3635     }
3636 
3637 
3638     // If we aren't appending the results to this list, then clear the list
3639     if (!append)
3640         sc_list.Clear();
3641 
3642     // Remember how many sc_list are in the list before we search in case
3643     // we are appending the results to a variable list.
3644     uint32_t original_size = sc_list.GetSize();
3645 
3646     if (m_using_apple_tables)
3647     {
3648         if (m_apple_names_ap.get())
3649             FindFunctions (regex, *m_apple_names_ap, sc_list);
3650     }
3651     else
3652     {
3653         // Index the DWARF if we haven't already
3654         if (!m_indexed)
3655             Index ();
3656 
3657         FindFunctions (regex, m_function_basename_index, sc_list);
3658 
3659         FindFunctions (regex, m_function_fullname_index, sc_list);
3660     }
3661 
3662     // Return the number of variable that were appended to the list
3663     return sc_list.GetSize() - original_size;
3664 }
3665 
3666 uint32_t
3667 SymbolFileDWARF::FindTypes (const SymbolContext& sc,
3668                             const ConstString &name,
3669                             const lldb_private::ClangNamespaceDecl *namespace_decl,
3670                             bool append,
3671                             uint32_t max_matches,
3672                             TypeList& types)
3673 {
3674     DWARFDebugInfo* info = DebugInfo();
3675     if (info == NULL)
3676         return 0;
3677 
3678     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3679 
3680     if (log)
3681     {
3682         if (namespace_decl)
3683         {
3684             GetObjectFile()->GetModule()->LogMessage (log,
3685                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
3686                                                       name.GetCString(),
3687                                                       namespace_decl->GetNamespaceDecl(),
3688                                                       namespace_decl->GetQualifiedName().c_str(),
3689                                                       append,
3690                                                       max_matches);
3691         }
3692         else
3693         {
3694             GetObjectFile()->GetModule()->LogMessage (log,
3695                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
3696                                                       name.GetCString(),
3697                                                       append,
3698                                                       max_matches);
3699         }
3700     }
3701 
3702     // If we aren't appending the results to this list, then clear the list
3703     if (!append)
3704         types.Clear();
3705 
3706     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3707 		return 0;
3708 
3709     DIEArray die_offsets;
3710 
3711     if (m_using_apple_tables)
3712     {
3713         if (m_apple_types_ap.get())
3714         {
3715             const char *name_cstr = name.GetCString();
3716             m_apple_types_ap->FindByName (name_cstr, die_offsets);
3717         }
3718     }
3719     else
3720     {
3721         if (!m_indexed)
3722             Index ();
3723 
3724         m_type_index.Find (name, die_offsets);
3725     }
3726 
3727     const size_t num_die_matches = die_offsets.size();
3728 
3729     if (num_die_matches)
3730     {
3731         const uint32_t initial_types_size = types.GetSize();
3732         DWARFCompileUnit* dwarf_cu = NULL;
3733         const DWARFDebugInfoEntry* die = NULL;
3734         DWARFDebugInfo* debug_info = DebugInfo();
3735         for (size_t i=0; i<num_die_matches; ++i)
3736         {
3737             const dw_offset_t die_offset = die_offsets[i];
3738             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3739 
3740             if (die)
3741             {
3742                 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3743                     continue;
3744 
3745                 Type *matching_type = ResolveType (dwarf_cu, die);
3746                 if (matching_type)
3747                 {
3748                     // We found a type pointer, now find the shared pointer form our type list
3749                     types.InsertUnique (matching_type->shared_from_this());
3750                     if (types.GetSize() >= max_matches)
3751                         break;
3752                 }
3753             }
3754             else
3755             {
3756                 if (m_using_apple_tables)
3757                 {
3758                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
3759                                                                                die_offset, name.GetCString());
3760                 }
3761             }
3762 
3763         }
3764         const uint32_t num_matches = types.GetSize() - initial_types_size;
3765         if (log && num_matches)
3766         {
3767             if (namespace_decl)
3768             {
3769                 GetObjectFile()->GetModule()->LogMessage (log,
3770                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
3771                                                           name.GetCString(),
3772                                                           namespace_decl->GetNamespaceDecl(),
3773                                                           namespace_decl->GetQualifiedName().c_str(),
3774                                                           append,
3775                                                           max_matches,
3776                                                           num_matches);
3777             }
3778             else
3779             {
3780                 GetObjectFile()->GetModule()->LogMessage (log,
3781                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
3782                                                           name.GetCString(),
3783                                                           append,
3784                                                           max_matches,
3785                                                           num_matches);
3786             }
3787         }
3788         return num_matches;
3789     }
3790     return 0;
3791 }
3792 
3793 
3794 ClangNamespaceDecl
3795 SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
3796                                 const ConstString &name,
3797                                 const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
3798 {
3799     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3800 
3801     if (log)
3802     {
3803         GetObjectFile()->GetModule()->LogMessage (log,
3804                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
3805                                                   name.GetCString());
3806     }
3807 
3808     if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
3809 		return ClangNamespaceDecl();
3810 
3811     ClangNamespaceDecl namespace_decl;
3812     DWARFDebugInfo* info = DebugInfo();
3813     if (info)
3814     {
3815         DIEArray die_offsets;
3816 
3817         // Index if we already haven't to make sure the compile units
3818         // get indexed and make their global DIE index list
3819         if (m_using_apple_tables)
3820         {
3821             if (m_apple_namespaces_ap.get())
3822             {
3823                 const char *name_cstr = name.GetCString();
3824                 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
3825             }
3826         }
3827         else
3828         {
3829             if (!m_indexed)
3830                 Index ();
3831 
3832             m_namespace_index.Find (name, die_offsets);
3833         }
3834 
3835         DWARFCompileUnit* dwarf_cu = NULL;
3836         const DWARFDebugInfoEntry* die = NULL;
3837         const size_t num_matches = die_offsets.size();
3838         if (num_matches)
3839         {
3840             DWARFDebugInfo* debug_info = DebugInfo();
3841             for (size_t i=0; i<num_matches; ++i)
3842             {
3843                 const dw_offset_t die_offset = die_offsets[i];
3844                 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3845 
3846                 if (die)
3847                 {
3848                     if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
3849                         continue;
3850 
3851                     clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
3852                     if (clang_namespace_decl)
3853                     {
3854                         namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
3855                         namespace_decl.SetNamespaceDecl (clang_namespace_decl);
3856                         break;
3857                     }
3858                 }
3859                 else
3860                 {
3861                     if (m_using_apple_tables)
3862                     {
3863                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
3864                                                                    die_offset, name.GetCString());
3865                     }
3866                 }
3867 
3868             }
3869         }
3870     }
3871     if (log && namespace_decl.GetNamespaceDecl())
3872     {
3873         GetObjectFile()->GetModule()->LogMessage (log,
3874                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
3875                                                   name.GetCString(),
3876                                                   namespace_decl.GetNamespaceDecl(),
3877                                                   namespace_decl.GetQualifiedName().c_str());
3878     }
3879 
3880     return namespace_decl;
3881 }
3882 
3883 uint32_t
3884 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
3885 {
3886     // Remember how many sc_list are in the list before we search in case
3887     // we are appending the results to a variable list.
3888     uint32_t original_size = types.GetSize();
3889 
3890     const uint32_t num_die_offsets = die_offsets.size();
3891     // Parse all of the types we found from the pubtypes matches
3892     uint32_t i;
3893     uint32_t num_matches = 0;
3894     for (i = 0; i < num_die_offsets; ++i)
3895     {
3896         Type *matching_type = ResolveTypeUID (die_offsets[i]);
3897         if (matching_type)
3898         {
3899             // We found a type pointer, now find the shared pointer form our type list
3900             types.InsertUnique (matching_type->shared_from_this());
3901             ++num_matches;
3902             if (num_matches >= max_matches)
3903                 break;
3904         }
3905     }
3906 
3907     // Return the number of variable that were appended to the list
3908     return types.GetSize() - original_size;
3909 }
3910 
3911 
3912 size_t
3913 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
3914                                        clang::DeclContext *containing_decl_ctx,
3915                                        DWARFCompileUnit* dwarf_cu,
3916                                        const DWARFDebugInfoEntry *parent_die,
3917                                        bool skip_artificial,
3918                                        bool &is_static,
3919                                        TypeList* type_list,
3920                                        std::vector<clang_type_t>& function_param_types,
3921                                        std::vector<clang::ParmVarDecl*>& function_param_decls,
3922                                        unsigned &type_quals,
3923                                        ClangASTContext::TemplateParameterInfos &template_param_infos)
3924 {
3925     if (parent_die == NULL)
3926         return 0;
3927 
3928     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
3929 
3930     size_t arg_idx = 0;
3931     const DWARFDebugInfoEntry *die;
3932     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
3933     {
3934         dw_tag_t tag = die->Tag();
3935         switch (tag)
3936         {
3937         case DW_TAG_formal_parameter:
3938             {
3939                 DWARFDebugInfoEntry::Attributes attributes;
3940                 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
3941                 if (num_attributes > 0)
3942                 {
3943                     const char *name = NULL;
3944                     Declaration decl;
3945                     dw_offset_t param_type_die_offset = DW_INVALID_OFFSET;
3946                     bool is_artificial = false;
3947                     // one of None, Auto, Register, Extern, Static, PrivateExtern
3948 
3949                     clang::StorageClass storage = clang::SC_None;
3950                     uint32_t i;
3951                     for (i=0; i<num_attributes; ++i)
3952                     {
3953                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
3954                         DWARFFormValue form_value;
3955                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
3956                         {
3957                             switch (attr)
3958                             {
3959                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
3960                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
3961                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
3962                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
3963                             case DW_AT_type:        param_type_die_offset = form_value.Reference(dwarf_cu); break;
3964                             case DW_AT_artificial:  is_artificial = form_value.Unsigned() != 0; break;
3965                             case DW_AT_location:
3966     //                          if (form_value.BlockData())
3967     //                          {
3968     //                              const DataExtractor& debug_info_data = debug_info();
3969     //                              uint32_t block_length = form_value.Unsigned();
3970     //                              DataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length);
3971     //                          }
3972     //                          else
3973     //                          {
3974     //                          }
3975     //                          break;
3976                             case DW_AT_const_value:
3977                             case DW_AT_default_value:
3978                             case DW_AT_description:
3979                             case DW_AT_endianity:
3980                             case DW_AT_is_optional:
3981                             case DW_AT_segment:
3982                             case DW_AT_variable_parameter:
3983                             default:
3984                             case DW_AT_abstract_origin:
3985                             case DW_AT_sibling:
3986                                 break;
3987                             }
3988                         }
3989                     }
3990 
3991                     bool skip = false;
3992                     if (skip_artificial)
3993                     {
3994                         if (is_artificial)
3995                         {
3996                             // In order to determine if a C++ member function is
3997                             // "const" we have to look at the const-ness of "this"...
3998                             // Ugly, but that
3999                             if (arg_idx == 0)
4000                             {
4001                                 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()))
4002                                 {
4003                                     // Often times compilers omit the "this" name for the
4004                                     // specification DIEs, so we can't rely upon the name
4005                                     // being in the formal parameter DIE...
4006                                     if (name == NULL || ::strcmp(name, "this")==0)
4007                                     {
4008                                         Type *this_type = ResolveTypeUID (param_type_die_offset);
4009                                         if (this_type)
4010                                         {
4011                                             uint32_t encoding_mask = this_type->GetEncodingMask();
4012                                             if (encoding_mask & Type::eEncodingIsPointerUID)
4013                                             {
4014                                                 is_static = false;
4015 
4016                                                 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
4017                                                     type_quals |= clang::Qualifiers::Const;
4018                                                 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
4019                                                     type_quals |= clang::Qualifiers::Volatile;
4020                                             }
4021                                         }
4022                                     }
4023                                 }
4024                             }
4025                             skip = true;
4026                         }
4027                         else
4028                         {
4029 
4030                             // HACK: Objective C formal parameters "self" and "_cmd"
4031                             // are not marked as artificial in the DWARF...
4032                             CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
4033                             if (comp_unit)
4034                             {
4035                                 switch (comp_unit->GetLanguage())
4036                                 {
4037                                     case eLanguageTypeObjC:
4038                                     case eLanguageTypeObjC_plus_plus:
4039                                         if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0))
4040                                             skip = true;
4041                                         break;
4042                                     default:
4043                                         break;
4044                                 }
4045                             }
4046                         }
4047                     }
4048 
4049                     if (!skip)
4050                     {
4051                         Type *type = ResolveTypeUID(param_type_die_offset);
4052                         if (type)
4053                         {
4054                             function_param_types.push_back (type->GetClangForwardType());
4055 
4056                             clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
4057                                                                                                                   type->GetClangForwardType(),
4058                                                                                                                   storage);
4059                             assert(param_var_decl);
4060                             function_param_decls.push_back(param_var_decl);
4061 
4062                             GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset()));
4063                         }
4064                     }
4065                 }
4066                 arg_idx++;
4067             }
4068             break;
4069 
4070         case DW_TAG_template_type_parameter:
4071         case DW_TAG_template_value_parameter:
4072             ParseTemplateDIE (dwarf_cu, die,template_param_infos);
4073             break;
4074 
4075         default:
4076             break;
4077         }
4078     }
4079     return arg_idx;
4080 }
4081 
4082 size_t
4083 SymbolFileDWARF::ParseChildEnumerators
4084 (
4085     const SymbolContext& sc,
4086     clang_type_t enumerator_clang_type,
4087     bool is_signed,
4088     uint32_t enumerator_byte_size,
4089     DWARFCompileUnit* dwarf_cu,
4090     const DWARFDebugInfoEntry *parent_die
4091 )
4092 {
4093     if (parent_die == NULL)
4094         return 0;
4095 
4096     size_t enumerators_added = 0;
4097     const DWARFDebugInfoEntry *die;
4098     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4099 
4100     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4101     {
4102         const dw_tag_t tag = die->Tag();
4103         if (tag == DW_TAG_enumerator)
4104         {
4105             DWARFDebugInfoEntry::Attributes attributes;
4106             const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4107             if (num_child_attributes > 0)
4108             {
4109                 const char *name = NULL;
4110                 bool got_value = false;
4111                 int64_t enum_value = 0;
4112                 Declaration decl;
4113 
4114                 uint32_t i;
4115                 for (i=0; i<num_child_attributes; ++i)
4116                 {
4117                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
4118                     DWARFFormValue form_value;
4119                     if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4120                     {
4121                         switch (attr)
4122                         {
4123                         case DW_AT_const_value:
4124                             got_value = true;
4125                             if (is_signed)
4126                                 enum_value = form_value.Signed();
4127                             else
4128                                 enum_value = form_value.Unsigned();
4129                             break;
4130 
4131                         case DW_AT_name:
4132                             name = form_value.AsCString(&get_debug_str_data());
4133                             break;
4134 
4135                         case DW_AT_description:
4136                         default:
4137                         case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4138                         case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4139                         case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4140                         case DW_AT_sibling:
4141                             break;
4142                         }
4143                     }
4144                 }
4145 
4146                 if (name && name[0] && got_value)
4147                 {
4148                     GetClangASTContext().AddEnumerationValueToEnumerationType (enumerator_clang_type,
4149                                                                                enumerator_clang_type,
4150                                                                                decl,
4151                                                                                name,
4152                                                                                enum_value,
4153                                                                                enumerator_byte_size * 8);
4154                     ++enumerators_added;
4155                 }
4156             }
4157         }
4158     }
4159     return enumerators_added;
4160 }
4161 
4162 void
4163 SymbolFileDWARF::ParseChildArrayInfo
4164 (
4165     const SymbolContext& sc,
4166     DWARFCompileUnit* dwarf_cu,
4167     const DWARFDebugInfoEntry *parent_die,
4168     int64_t& first_index,
4169     std::vector<uint64_t>& element_orders,
4170     uint32_t& byte_stride,
4171     uint32_t& bit_stride
4172 )
4173 {
4174     if (parent_die == NULL)
4175         return;
4176 
4177     const DWARFDebugInfoEntry *die;
4178     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4179     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4180     {
4181         const dw_tag_t tag = die->Tag();
4182         switch (tag)
4183         {
4184         case DW_TAG_subrange_type:
4185             {
4186                 DWARFDebugInfoEntry::Attributes attributes;
4187                 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4188                 if (num_child_attributes > 0)
4189                 {
4190                     uint64_t num_elements = 0;
4191                     uint64_t lower_bound = 0;
4192                     uint64_t upper_bound = 0;
4193                     bool upper_bound_valid = false;
4194                     uint32_t i;
4195                     for (i=0; i<num_child_attributes; ++i)
4196                     {
4197                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4198                         DWARFFormValue form_value;
4199                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4200                         {
4201                             switch (attr)
4202                             {
4203                             case DW_AT_name:
4204                                 break;
4205 
4206                             case DW_AT_count:
4207                                 num_elements = form_value.Unsigned();
4208                                 break;
4209 
4210                             case DW_AT_bit_stride:
4211                                 bit_stride = form_value.Unsigned();
4212                                 break;
4213 
4214                             case DW_AT_byte_stride:
4215                                 byte_stride = form_value.Unsigned();
4216                                 break;
4217 
4218                             case DW_AT_lower_bound:
4219                                 lower_bound = form_value.Unsigned();
4220                                 break;
4221 
4222                             case DW_AT_upper_bound:
4223                                 upper_bound_valid = true;
4224                                 upper_bound = form_value.Unsigned();
4225                                 break;
4226 
4227                             default:
4228                             case DW_AT_abstract_origin:
4229                             case DW_AT_accessibility:
4230                             case DW_AT_allocated:
4231                             case DW_AT_associated:
4232                             case DW_AT_data_location:
4233                             case DW_AT_declaration:
4234                             case DW_AT_description:
4235                             case DW_AT_sibling:
4236                             case DW_AT_threads_scaled:
4237                             case DW_AT_type:
4238                             case DW_AT_visibility:
4239                                 break;
4240                             }
4241                         }
4242                     }
4243 
4244                     if (num_elements == 0)
4245                     {
4246                         if (upper_bound_valid && upper_bound >= lower_bound)
4247                             num_elements = upper_bound - lower_bound + 1;
4248                     }
4249 
4250                     element_orders.push_back (num_elements);
4251                 }
4252             }
4253             break;
4254         }
4255     }
4256 }
4257 
4258 TypeSP
4259 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
4260 {
4261     TypeSP type_sp;
4262     if (die != NULL)
4263     {
4264         assert(dwarf_cu != NULL);
4265         Type *type_ptr = m_die_to_type.lookup (die);
4266         if (type_ptr == NULL)
4267         {
4268             CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
4269             assert (lldb_cu);
4270             SymbolContext sc(lldb_cu);
4271             type_sp = ParseType(sc, dwarf_cu, die, NULL);
4272         }
4273         else if (type_ptr != DIE_IS_BEING_PARSED)
4274         {
4275             // Grab the existing type from the master types lists
4276             type_sp = type_ptr->shared_from_this();
4277         }
4278 
4279     }
4280     return type_sp;
4281 }
4282 
4283 clang::DeclContext *
4284 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
4285 {
4286     if (die_offset != DW_INVALID_OFFSET)
4287     {
4288         DWARFCompileUnitSP cu_sp;
4289         const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
4290         return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
4291     }
4292     return NULL;
4293 }
4294 
4295 clang::DeclContext *
4296 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
4297 {
4298     if (die_offset != DW_INVALID_OFFSET)
4299     {
4300         DWARFDebugInfo* debug_info = DebugInfo();
4301         if (debug_info)
4302         {
4303             DWARFCompileUnitSP cu_sp;
4304             const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
4305             if (die)
4306                 return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
4307         }
4308     }
4309     return NULL;
4310 }
4311 
4312 clang::NamespaceDecl *
4313 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die)
4314 {
4315     if (die && die->Tag() == DW_TAG_namespace)
4316     {
4317         // See if we already parsed this namespace DIE and associated it with a
4318         // uniqued namespace declaration
4319         clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]);
4320         if (namespace_decl)
4321             return namespace_decl;
4322         else
4323         {
4324             const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL);
4325             clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL);
4326             namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
4327             Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4328             if (log)
4329             {
4330                 if (namespace_name)
4331                 {
4332                     GetObjectFile()->GetModule()->LogMessage (log,
4333                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
4334                                                               GetClangASTContext().getASTContext(),
4335                                                               MakeUserID(die->GetOffset()),
4336                                                               namespace_name,
4337                                                               namespace_decl,
4338                                                               namespace_decl->getOriginalNamespace());
4339                 }
4340                 else
4341                 {
4342                     GetObjectFile()->GetModule()->LogMessage (log,
4343                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
4344                                                               GetClangASTContext().getASTContext(),
4345                                                               MakeUserID(die->GetOffset()),
4346                                                               namespace_decl,
4347                                                               namespace_decl->getOriginalNamespace());
4348                 }
4349             }
4350 
4351             if (namespace_decl)
4352                 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
4353             return namespace_decl;
4354         }
4355     }
4356     return NULL;
4357 }
4358 
4359 clang::DeclContext *
4360 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4361 {
4362     clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4363     if (clang_decl_ctx)
4364         return clang_decl_ctx;
4365     // If this DIE has a specification, or an abstract origin, then trace to those.
4366 
4367     dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4368     if (die_offset != DW_INVALID_OFFSET)
4369         return GetClangDeclContextForDIEOffset (sc, die_offset);
4370 
4371     die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4372     if (die_offset != DW_INVALID_OFFSET)
4373         return GetClangDeclContextForDIEOffset (sc, die_offset);
4374 
4375     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4376     if (log)
4377         GetObjectFile()->GetModule()->LogMessage(log, "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu));
4378     // This is the DIE we want.  Parse it, then query our map.
4379     bool assert_not_being_parsed = true;
4380     ResolveTypeUID (cu, die, assert_not_being_parsed);
4381 
4382     clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4383 
4384     return clang_decl_ctx;
4385 }
4386 
4387 clang::DeclContext *
4388 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
4389 {
4390     if (m_clang_tu_decl == NULL)
4391         m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
4392 
4393     const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
4394 
4395     if (decl_ctx_die_copy)
4396         *decl_ctx_die_copy = decl_ctx_die;
4397 
4398     if (decl_ctx_die)
4399     {
4400 
4401         DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
4402         if (pos != m_die_to_decl_ctx.end())
4403             return pos->second;
4404 
4405         switch (decl_ctx_die->Tag())
4406         {
4407         case DW_TAG_compile_unit:
4408             return m_clang_tu_decl;
4409 
4410         case DW_TAG_namespace:
4411             return ResolveNamespaceDIE (cu, decl_ctx_die);
4412             break;
4413 
4414         case DW_TAG_structure_type:
4415         case DW_TAG_union_type:
4416         case DW_TAG_class_type:
4417             {
4418                 Type* type = ResolveType (cu, decl_ctx_die);
4419                 if (type)
4420                 {
4421                     clang::DeclContext *decl_ctx = ClangASTContext::GetDeclContextForType (type->GetClangForwardType ());
4422                     if (decl_ctx)
4423                     {
4424                         LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
4425                         if (decl_ctx)
4426                             return decl_ctx;
4427                     }
4428                 }
4429             }
4430             break;
4431 
4432         default:
4433             break;
4434         }
4435     }
4436     return m_clang_tu_decl;
4437 }
4438 
4439 
4440 const DWARFDebugInfoEntry *
4441 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4442 {
4443     if (cu && die)
4444     {
4445         const DWARFDebugInfoEntry * const decl_die = die;
4446 
4447         while (die != NULL)
4448         {
4449             // If this is the original DIE that we are searching for a declaration
4450             // for, then don't look in the cache as we don't want our own decl
4451             // context to be our decl context...
4452             if (decl_die != die)
4453             {
4454                 switch (die->Tag())
4455                 {
4456                     case DW_TAG_compile_unit:
4457                     case DW_TAG_namespace:
4458                     case DW_TAG_structure_type:
4459                     case DW_TAG_union_type:
4460                     case DW_TAG_class_type:
4461                         return die;
4462 
4463                     default:
4464                         break;
4465                 }
4466             }
4467 
4468             dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4469             if (die_offset != DW_INVALID_OFFSET)
4470             {
4471                 DWARFCompileUnit *spec_cu = cu;
4472                 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
4473                 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
4474                 if (spec_die_decl_ctx_die)
4475                     return spec_die_decl_ctx_die;
4476             }
4477 
4478             die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4479             if (die_offset != DW_INVALID_OFFSET)
4480             {
4481                 DWARFCompileUnit *abs_cu = cu;
4482                 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
4483                 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
4484                 if (abs_die_decl_ctx_die)
4485                     return abs_die_decl_ctx_die;
4486             }
4487 
4488             die = die->GetParent();
4489         }
4490     }
4491     return NULL;
4492 }
4493 
4494 
4495 Symbol *
4496 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
4497 {
4498     Symbol *objc_class_symbol = NULL;
4499     if (m_obj_file)
4500     {
4501         Symtab *symtab = m_obj_file->GetSymtab();
4502         if (symtab)
4503         {
4504             objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
4505                                                                         eSymbolTypeObjCClass,
4506                                                                         Symtab::eDebugNo,
4507                                                                         Symtab::eVisibilityAny);
4508         }
4509     }
4510     return objc_class_symbol;
4511 }
4512 
4513 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
4514 // then we can end up looking through all class types for a complete type and never find
4515 // the full definition. We need to know if this attribute is supported, so we determine
4516 // this here and cache th result. We also need to worry about the debug map DWARF file
4517 // if we are doing darwin DWARF in .o file debugging.
4518 bool
4519 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
4520 {
4521     if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
4522     {
4523         m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
4524         if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
4525             m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4526         else
4527         {
4528             DWARFDebugInfo* debug_info = DebugInfo();
4529             const uint32_t num_compile_units = GetNumCompileUnits();
4530             for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
4531             {
4532                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
4533                 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
4534                 {
4535                     m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4536                     break;
4537                 }
4538             }
4539         }
4540         if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ())
4541             return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
4542     }
4543     return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
4544 }
4545 
4546 // This function can be used when a DIE is found that is a forward declaration
4547 // DIE and we want to try and find a type that has the complete definition.
4548 TypeSP
4549 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
4550                                                        const ConstString &type_name,
4551                                                        bool must_be_implementation)
4552 {
4553 
4554     TypeSP type_sp;
4555 
4556     if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
4557         return type_sp;
4558 
4559     DIEArray die_offsets;
4560 
4561     if (m_using_apple_tables)
4562     {
4563         if (m_apple_types_ap.get())
4564         {
4565             const char *name_cstr = type_name.GetCString();
4566             m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
4567         }
4568     }
4569     else
4570     {
4571         if (!m_indexed)
4572             Index ();
4573 
4574         m_type_index.Find (type_name, die_offsets);
4575     }
4576 
4577     const size_t num_matches = die_offsets.size();
4578 
4579     DWARFCompileUnit* type_cu = NULL;
4580     const DWARFDebugInfoEntry* type_die = NULL;
4581     if (num_matches)
4582     {
4583         DWARFDebugInfo* debug_info = DebugInfo();
4584         for (size_t i=0; i<num_matches; ++i)
4585         {
4586             const dw_offset_t die_offset = die_offsets[i];
4587             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4588 
4589             if (type_die)
4590             {
4591                 bool try_resolving_type = false;
4592 
4593                 // Don't try and resolve the DIE we are looking for with the DIE itself!
4594                 if (type_die != die)
4595                 {
4596                     switch (type_die->Tag())
4597                     {
4598                         case DW_TAG_class_type:
4599                         case DW_TAG_structure_type:
4600                             try_resolving_type = true;
4601                             break;
4602                         default:
4603                             break;
4604                     }
4605                 }
4606 
4607                 if (try_resolving_type)
4608                 {
4609 					if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
4610 	                    try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
4611 
4612                     if (try_resolving_type)
4613                     {
4614                         Type *resolved_type = ResolveType (type_cu, type_die, false);
4615                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
4616                         {
4617                             DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ") from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
4618                                           MakeUserID(die->GetOffset()),
4619                                           MakeUserID(dwarf_cu->GetOffset()),
4620                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
4621                                           MakeUserID(type_die->GetOffset()),
4622                                           MakeUserID(type_cu->GetOffset()));
4623 
4624                             if (die)
4625                                 m_die_to_type[die] = resolved_type;
4626                             type_sp = resolved_type->shared_from_this();
4627                             break;
4628                         }
4629                     }
4630                 }
4631             }
4632             else
4633             {
4634                 if (m_using_apple_tables)
4635                 {
4636                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4637                                                                die_offset, type_name.GetCString());
4638                 }
4639             }
4640 
4641         }
4642     }
4643     return type_sp;
4644 }
4645 
4646 
4647 //----------------------------------------------------------------------
4648 // This function helps to ensure that the declaration contexts match for
4649 // two different DIEs. Often times debug information will refer to a
4650 // forward declaration of a type (the equivalent of "struct my_struct;".
4651 // There will often be a declaration of that type elsewhere that has the
4652 // full definition. When we go looking for the full type "my_struct", we
4653 // will find one or more matches in the accelerator tables and we will
4654 // then need to make sure the type was in the same declaration context
4655 // as the original DIE. This function can efficiently compare two DIEs
4656 // and will return true when the declaration context matches, and false
4657 // when they don't.
4658 //----------------------------------------------------------------------
4659 bool
4660 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
4661                                        DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
4662 {
4663     if (die1 == die2)
4664         return true;
4665 
4666 #if defined (LLDB_CONFIGURATION_DEBUG)
4667     // You can't and shouldn't call this function with a compile unit from
4668     // two different SymbolFileDWARF instances.
4669     assert (DebugInfo()->ContainsCompileUnit (cu1));
4670     assert (DebugInfo()->ContainsCompileUnit (cu2));
4671 #endif
4672 
4673     DWARFDIECollection decl_ctx_1;
4674     DWARFDIECollection decl_ctx_2;
4675     //The declaration DIE stack is a stack of the declaration context
4676     // DIEs all the way back to the compile unit. If a type "T" is
4677     // declared inside a class "B", and class "B" is declared inside
4678     // a class "A" and class "A" is in a namespace "lldb", and the
4679     // namespace is in a compile unit, there will be a stack of DIEs:
4680     //
4681     //   [0] DW_TAG_class_type for "B"
4682     //   [1] DW_TAG_class_type for "A"
4683     //   [2] DW_TAG_namespace  for "lldb"
4684     //   [3] DW_TAG_compile_unit for the source file.
4685     //
4686     // We grab both contexts and make sure that everything matches
4687     // all the way back to the compiler unit.
4688 
4689     // First lets grab the decl contexts for both DIEs
4690     die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
4691     die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
4692     // Make sure the context arrays have the same size, otherwise
4693     // we are done
4694     const size_t count1 = decl_ctx_1.Size();
4695     const size_t count2 = decl_ctx_2.Size();
4696     if (count1 != count2)
4697         return false;
4698 
4699     // Make sure the DW_TAG values match all the way back up the the
4700     // compile unit. If they don't, then we are done.
4701     const DWARFDebugInfoEntry *decl_ctx_die1;
4702     const DWARFDebugInfoEntry *decl_ctx_die2;
4703     size_t i;
4704     for (i=0; i<count1; i++)
4705     {
4706         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
4707         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
4708         if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
4709             return false;
4710     }
4711 #if defined LLDB_CONFIGURATION_DEBUG
4712 
4713     // Make sure the top item in the decl context die array is always
4714     // DW_TAG_compile_unit. If it isn't then something went wrong in
4715     // the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
4716     assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit);
4717 
4718 #endif
4719     // Always skip the compile unit when comparing by only iterating up to
4720     // "count - 1". Here we compare the names as we go.
4721     for (i=0; i<count1 - 1; i++)
4722     {
4723         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
4724         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
4725         const char *name1 = decl_ctx_die1->GetName(this, cu1);
4726         const char *name2 = decl_ctx_die2->GetName(this, cu2);
4727         // If the string was from a DW_FORM_strp, then the pointer will often
4728         // be the same!
4729         if (name1 == name2)
4730             continue;
4731 
4732         // Name pointers are not equal, so only compare the strings
4733         // if both are not NULL.
4734         if (name1 && name2)
4735         {
4736             // If the strings don't compare, we are done...
4737             if (strcmp(name1, name2) != 0)
4738                 return false;
4739         }
4740         else
4741         {
4742             // One name was NULL while the other wasn't
4743             return false;
4744         }
4745     }
4746     // We made it through all of the checks and the declaration contexts
4747     // are equal.
4748     return true;
4749 }
4750 
4751 // This function can be used when a DIE is found that is a forward declaration
4752 // DIE and we want to try and find a type that has the complete definition.
4753 // "cu" and "die" must be from this SymbolFileDWARF
4754 TypeSP
4755 SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
4756                                            const DWARFDebugInfoEntry *die,
4757                                            const ConstString &type_name)
4758 {
4759     TypeSP type_sp;
4760 
4761 #if defined (LLDB_CONFIGURATION_DEBUG)
4762     // You can't and shouldn't call this function with a compile unit from
4763     // another SymbolFileDWARF instance.
4764     assert (DebugInfo()->ContainsCompileUnit (cu));
4765 #endif
4766 
4767     if (cu == NULL || die == NULL || !type_name)
4768         return type_sp;
4769 
4770     std::string qualified_name;
4771 
4772     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
4773     if (log)
4774     {
4775         die->GetQualifiedName(this, cu, qualified_name);
4776         GetObjectFile()->GetModule()->LogMessage (log,
4777                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')",
4778                                                   die->GetOffset(),
4779                                                   qualified_name.c_str(),
4780                                                   type_name.GetCString());
4781     }
4782 
4783     DIEArray die_offsets;
4784 
4785     if (m_using_apple_tables)
4786     {
4787         if (m_apple_types_ap.get())
4788         {
4789             const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
4790             const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
4791             if (has_tag && has_qualified_name_hash)
4792             {
4793                 if (qualified_name.empty())
4794                     die->GetQualifiedName(this, cu, qualified_name);
4795 
4796                 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str());
4797                 if (log)
4798                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
4799                 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets);
4800             }
4801             else if (has_tag > 1)
4802             {
4803                 if (log)
4804                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
4805                 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
4806             }
4807             else
4808             {
4809                 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
4810             }
4811         }
4812     }
4813     else
4814     {
4815         if (!m_indexed)
4816             Index ();
4817 
4818         m_type_index.Find (type_name, die_offsets);
4819     }
4820 
4821     const size_t num_matches = die_offsets.size();
4822 
4823     const dw_tag_t die_tag = die->Tag();
4824 
4825     DWARFCompileUnit* type_cu = NULL;
4826     const DWARFDebugInfoEntry* type_die = NULL;
4827     if (num_matches)
4828     {
4829         DWARFDebugInfo* debug_info = DebugInfo();
4830         for (size_t i=0; i<num_matches; ++i)
4831         {
4832             const dw_offset_t die_offset = die_offsets[i];
4833             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4834 
4835             if (type_die)
4836             {
4837                 bool try_resolving_type = false;
4838 
4839                 // Don't try and resolve the DIE we are looking for with the DIE itself!
4840                 if (type_die != die)
4841                 {
4842                     const dw_tag_t type_die_tag = type_die->Tag();
4843                     // Make sure the tags match
4844                     if (type_die_tag == die_tag)
4845                     {
4846                         // The tags match, lets try resolving this type
4847                         try_resolving_type = true;
4848                     }
4849                     else
4850                     {
4851                         // The tags don't match, but we need to watch our for a
4852                         // forward declaration for a struct and ("struct foo")
4853                         // ends up being a class ("class foo { ... };") or
4854                         // vice versa.
4855                         switch (type_die_tag)
4856                         {
4857                         case DW_TAG_class_type:
4858                             // We had a "class foo", see if we ended up with a "struct foo { ... };"
4859                             try_resolving_type = (die_tag == DW_TAG_structure_type);
4860                             break;
4861                         case DW_TAG_structure_type:
4862                             // We had a "struct foo", see if we ended up with a "class foo { ... };"
4863                             try_resolving_type = (die_tag == DW_TAG_class_type);
4864                             break;
4865                         default:
4866                             // Tags don't match, don't event try to resolve
4867                             // using this type whose name matches....
4868                             break;
4869                         }
4870                     }
4871                 }
4872 
4873                 if (try_resolving_type)
4874                 {
4875                     if (log)
4876                     {
4877                         std::string qualified_name;
4878                         type_die->GetQualifiedName(this, cu, qualified_name);
4879                         GetObjectFile()->GetModule()->LogMessage (log,
4880                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)",
4881                                                                   die->GetOffset(),
4882                                                                   type_name.GetCString(),
4883                                                                   type_die->GetOffset(),
4884                                                                   qualified_name.c_str());
4885                     }
4886 
4887                     // Make sure the decl contexts match all the way up
4888                     if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
4889                     {
4890                         Type *resolved_type = ResolveType (type_cu, type_die, false);
4891                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
4892                         {
4893                             DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ") from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
4894                                           MakeUserID(die->GetOffset()),
4895                                           MakeUserID(dwarf_cu->GetOffset()),
4896                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
4897                                           MakeUserID(type_die->GetOffset()),
4898                                           MakeUserID(type_cu->GetOffset()));
4899 
4900                             m_die_to_type[die] = resolved_type;
4901                             type_sp = resolved_type->shared_from_this();
4902                             break;
4903                         }
4904                     }
4905                 }
4906                 else
4907                 {
4908                     if (log)
4909                     {
4910                         std::string qualified_name;
4911                         type_die->GetQualifiedName(this, cu, qualified_name);
4912                         GetObjectFile()->GetModule()->LogMessage (log,
4913                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)",
4914                                                                   die->GetOffset(),
4915                                                                   type_name.GetCString(),
4916                                                                   type_die->GetOffset(),
4917                                                                   qualified_name.c_str());
4918                     }
4919                 }
4920             }
4921             else
4922             {
4923                 if (m_using_apple_tables)
4924                 {
4925                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4926                                                                                die_offset, type_name.GetCString());
4927                 }
4928             }
4929 
4930         }
4931     }
4932     return type_sp;
4933 }
4934 
4935 TypeSP
4936 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx)
4937 {
4938     TypeSP type_sp;
4939 
4940     const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
4941     if (dwarf_decl_ctx_count > 0)
4942     {
4943         const ConstString type_name(dwarf_decl_ctx[0].name);
4944         const dw_tag_t tag = dwarf_decl_ctx[0].tag;
4945 
4946         if (type_name)
4947         {
4948             Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
4949             if (log)
4950             {
4951                 GetObjectFile()->GetModule()->LogMessage (log,
4952                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')",
4953                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
4954                                                           dwarf_decl_ctx.GetQualifiedName());
4955             }
4956 
4957             DIEArray die_offsets;
4958 
4959             if (m_using_apple_tables)
4960             {
4961                 if (m_apple_types_ap.get())
4962                 {
4963                     const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
4964                     const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
4965                     if (has_tag && has_qualified_name_hash)
4966                     {
4967                         const char *qualified_name = dwarf_decl_ctx.GetQualifiedName();
4968                         const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name);
4969                         if (log)
4970                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
4971                         m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets);
4972                     }
4973                     else if (has_tag)
4974                     {
4975                         if (log)
4976                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
4977                         m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets);
4978                     }
4979                     else
4980                     {
4981                         m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
4982                     }
4983                 }
4984             }
4985             else
4986             {
4987                 if (!m_indexed)
4988                     Index ();
4989 
4990                 m_type_index.Find (type_name, die_offsets);
4991             }
4992 
4993             const size_t num_matches = die_offsets.size();
4994 
4995 
4996             DWARFCompileUnit* type_cu = NULL;
4997             const DWARFDebugInfoEntry* type_die = NULL;
4998             if (num_matches)
4999             {
5000                 DWARFDebugInfo* debug_info = DebugInfo();
5001                 for (size_t i=0; i<num_matches; ++i)
5002                 {
5003                     const dw_offset_t die_offset = die_offsets[i];
5004                     type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5005 
5006                     if (type_die)
5007                     {
5008                         bool try_resolving_type = false;
5009 
5010                         // Don't try and resolve the DIE we are looking for with the DIE itself!
5011                         const dw_tag_t type_tag = type_die->Tag();
5012                         // Make sure the tags match
5013                         if (type_tag == tag)
5014                         {
5015                             // The tags match, lets try resolving this type
5016                             try_resolving_type = true;
5017                         }
5018                         else
5019                         {
5020                             // The tags don't match, but we need to watch our for a
5021                             // forward declaration for a struct and ("struct foo")
5022                             // ends up being a class ("class foo { ... };") or
5023                             // vice versa.
5024                             switch (type_tag)
5025                             {
5026                                 case DW_TAG_class_type:
5027                                     // We had a "class foo", see if we ended up with a "struct foo { ... };"
5028                                     try_resolving_type = (tag == DW_TAG_structure_type);
5029                                     break;
5030                                 case DW_TAG_structure_type:
5031                                     // We had a "struct foo", see if we ended up with a "class foo { ... };"
5032                                     try_resolving_type = (tag == DW_TAG_class_type);
5033                                     break;
5034                                 default:
5035                                     // Tags don't match, don't event try to resolve
5036                                     // using this type whose name matches....
5037                                     break;
5038                             }
5039                         }
5040 
5041                         if (try_resolving_type)
5042                         {
5043                             DWARFDeclContext type_dwarf_decl_ctx;
5044                             type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx);
5045 
5046                             if (log)
5047                             {
5048                                 GetObjectFile()->GetModule()->LogMessage (log,
5049                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)",
5050                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5051                                                                           dwarf_decl_ctx.GetQualifiedName(),
5052                                                                           type_die->GetOffset(),
5053                                                                           type_dwarf_decl_ctx.GetQualifiedName());
5054                             }
5055 
5056                             // Make sure the decl contexts match all the way up
5057                             if (dwarf_decl_ctx == type_dwarf_decl_ctx)
5058                             {
5059                                 Type *resolved_type = ResolveType (type_cu, type_die, false);
5060                                 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5061                                 {
5062                                     type_sp = resolved_type->shared_from_this();
5063                                     break;
5064                                 }
5065                             }
5066                         }
5067                         else
5068                         {
5069                             if (log)
5070                             {
5071                                 std::string qualified_name;
5072                                 type_die->GetQualifiedName(this, type_cu, qualified_name);
5073                                 GetObjectFile()->GetModule()->LogMessage (log,
5074                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)",
5075                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5076                                                                           dwarf_decl_ctx.GetQualifiedName(),
5077                                                                           type_die->GetOffset(),
5078                                                                           qualified_name.c_str());
5079                             }
5080                         }
5081                     }
5082                     else
5083                     {
5084                         if (m_using_apple_tables)
5085                         {
5086                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5087                                                                                        die_offset, type_name.GetCString());
5088                         }
5089                     }
5090 
5091                 }
5092             }
5093         }
5094     }
5095     return type_sp;
5096 }
5097 
5098 bool
5099 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile,
5100                                              Type *class_type,
5101                                              DWARFCompileUnit* src_cu,
5102                                              const DWARFDebugInfoEntry *src_class_die,
5103                                              DWARFCompileUnit* dst_cu,
5104                                              const DWARFDebugInfoEntry *dst_class_die,
5105                                              llvm::SmallVectorImpl <const DWARFDebugInfoEntry *> &failures)
5106 {
5107     if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die)
5108         return false;
5109     if (src_class_die->Tag() != dst_class_die->Tag())
5110         return false;
5111 
5112     // We need to complete the class type so we can get all of the method types
5113     // parsed so we can then unique those types to their equivalent counterparts
5114     // in "dst_cu" and "dst_class_die"
5115     class_type->GetClangFullType();
5116 
5117     const DWARFDebugInfoEntry *src_die;
5118     const DWARFDebugInfoEntry *dst_die;
5119     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die;
5120     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die;
5121     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial;
5122     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial;
5123     for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling())
5124     {
5125         if (src_die->Tag() == DW_TAG_subprogram)
5126         {
5127             // Make sure this is a declaration and not a concrete instance by looking
5128             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5129             // are placed inside the class definitions and shouldn't be included in
5130             // the list of things are are tracking here.
5131             if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1)
5132             {
5133                 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5134                 if (src_name)
5135                 {
5136                     ConstString src_const_name(src_name);
5137                     if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0))
5138                         src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die);
5139                     else
5140                         src_name_to_die.Append(src_const_name.GetCString(), src_die);
5141                 }
5142             }
5143         }
5144     }
5145     for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling())
5146     {
5147         if (dst_die->Tag() == DW_TAG_subprogram)
5148         {
5149             // Make sure this is a declaration and not a concrete instance by looking
5150             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5151             // are placed inside the class definitions and shouldn't be included in
5152             // the list of things are are tracking here.
5153             if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1)
5154             {
5155                 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5156                 if (dst_name)
5157                 {
5158                     ConstString dst_const_name(dst_name);
5159                     if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0))
5160                         dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die);
5161                     else
5162                         dst_name_to_die.Append(dst_const_name.GetCString(), dst_die);
5163                 }
5164             }
5165         }
5166     }
5167     const uint32_t src_size = src_name_to_die.GetSize ();
5168     const uint32_t dst_size = dst_name_to_die.GetSize ();
5169     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION));
5170 
5171     // Is everything kosher so we can go through the members at top speed?
5172     bool fast_path = true;
5173 
5174     if (src_size != dst_size)
5175     {
5176         if (src_size != 0 && dst_size != 0)
5177         {
5178             if (log)
5179                 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)",
5180                             src_class_die->GetOffset(),
5181                             dst_class_die->GetOffset(),
5182                             src_size,
5183                             dst_size);
5184         }
5185 
5186         fast_path = false;
5187     }
5188 
5189     uint32_t idx;
5190 
5191     if (fast_path)
5192     {
5193         for (idx = 0; idx < src_size; ++idx)
5194         {
5195             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5196             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5197 
5198             if (src_die->Tag() != dst_die->Tag())
5199             {
5200                 if (log)
5201                     log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
5202                                 src_class_die->GetOffset(),
5203                                 dst_class_die->GetOffset(),
5204                                 src_die->GetOffset(),
5205                                 DW_TAG_value_to_name(src_die->Tag()),
5206                                 dst_die->GetOffset(),
5207                                 DW_TAG_value_to_name(src_die->Tag()));
5208                 fast_path = false;
5209             }
5210 
5211             const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5212             const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5213 
5214             // Make sure the names match
5215             if (src_name == dst_name || (strcmp (src_name, dst_name) == 0))
5216                 continue;
5217 
5218             if (log)
5219                 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
5220                             src_class_die->GetOffset(),
5221                             dst_class_die->GetOffset(),
5222                             src_die->GetOffset(),
5223                             src_name,
5224                             dst_die->GetOffset(),
5225                             dst_name);
5226 
5227             fast_path = false;
5228         }
5229     }
5230 
5231     // Now do the work of linking the DeclContexts and Types.
5232     if (fast_path)
5233     {
5234         // We can do this quickly.  Just run across the tables index-for-index since
5235         // we know each node has matching names and tags.
5236         for (idx = 0; idx < src_size; ++idx)
5237         {
5238             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5239             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5240 
5241             clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5242             if (src_decl_ctx)
5243             {
5244                 if (log)
5245                     log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5246                 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5247             }
5248             else
5249             {
5250                 if (log)
5251                     log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5252             }
5253 
5254             Type *src_child_type = m_die_to_type[src_die];
5255             if (src_child_type)
5256             {
5257                 if (log)
5258                     log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5259                 m_die_to_type[dst_die] = src_child_type;
5260             }
5261             else
5262             {
5263                 if (log)
5264                     log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5265             }
5266         }
5267     }
5268     else
5269     {
5270         // We must do this slowly.  For each member of the destination, look
5271         // up a member in the source with the same name, check its tag, and
5272         // unique them if everything matches up.  Report failures.
5273 
5274         if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty())
5275         {
5276             src_name_to_die.Sort();
5277 
5278             for (idx = 0; idx < dst_size; ++idx)
5279             {
5280                 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx);
5281                 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
5282                 src_die = src_name_to_die.Find(dst_name, NULL);
5283 
5284                 if (src_die && (src_die->Tag() == dst_die->Tag()))
5285                 {
5286                     clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5287                     if (src_decl_ctx)
5288                     {
5289                         if (log)
5290                             log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5291                         LinkDeclContextToDIE (src_decl_ctx, dst_die);
5292                     }
5293                     else
5294                     {
5295                         if (log)
5296                             log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5297                     }
5298 
5299                     Type *src_child_type = m_die_to_type[src_die];
5300                     if (src_child_type)
5301                     {
5302                         if (log)
5303                             log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5304                         m_die_to_type[dst_die] = src_child_type;
5305                     }
5306                     else
5307                     {
5308                         if (log)
5309                             log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5310                     }
5311                 }
5312                 else
5313                 {
5314                     if (log)
5315                         log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset());
5316 
5317                     failures.push_back(dst_die);
5318                 }
5319             }
5320         }
5321     }
5322 
5323     const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize ();
5324     const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize ();
5325 
5326     UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src;
5327 
5328     if (src_size_artificial && dst_size_artificial)
5329     {
5330         dst_name_to_die_artificial.Sort();
5331 
5332         for (idx = 0; idx < src_size_artificial; ++idx)
5333         {
5334             const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx);
5335             src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5336             dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL);
5337 
5338             if (dst_die)
5339             {
5340                 // Both classes have the artificial types, link them
5341                 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die];
5342                 if (src_decl_ctx)
5343                 {
5344                     if (log)
5345                         log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5346                     LinkDeclContextToDIE (src_decl_ctx, dst_die);
5347                 }
5348                 else
5349                 {
5350                     if (log)
5351                         log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5352                 }
5353 
5354                 Type *src_child_type = m_die_to_type[src_die];
5355                 if (src_child_type)
5356                 {
5357                     if (log)
5358                         log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5359                     m_die_to_type[dst_die] = src_child_type;
5360                 }
5361                 else
5362                 {
5363                     if (log)
5364                         log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5365                 }
5366             }
5367         }
5368     }
5369 
5370     if (dst_size_artificial)
5371     {
5372         for (idx = 0; idx < dst_size_artificial; ++idx)
5373         {
5374             const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx);
5375             dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5376             if (log)
5377                 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial);
5378 
5379             failures.push_back(dst_die);
5380         }
5381     }
5382 
5383     return (failures.size() != 0);
5384 }
5385 
5386 TypeSP
5387 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
5388 {
5389     TypeSP type_sp;
5390 
5391     if (type_is_new_ptr)
5392         *type_is_new_ptr = false;
5393 
5394 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5395     static DIEStack g_die_stack;
5396     DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
5397 #endif
5398 
5399     AccessType accessibility = eAccessNone;
5400     if (die != NULL)
5401     {
5402         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5403         if (log)
5404         {
5405             const DWARFDebugInfoEntry *context_die;
5406             clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
5407 
5408             GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
5409                         die->GetOffset(),
5410                         context,
5411                         context_die->GetOffset(),
5412                         DW_TAG_value_to_name(die->Tag()),
5413                         die->GetName(this, dwarf_cu));
5414 
5415 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5416             scoped_die_logger.Push (dwarf_cu, die);
5417             g_die_stack.LogDIEs(log, this);
5418 #endif
5419         }
5420 //
5421 //        Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5422 //        if (log && dwarf_cu)
5423 //        {
5424 //            StreamString s;
5425 //            die->DumpLocation (this, dwarf_cu, s);
5426 //            GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
5427 //
5428 //        }
5429 
5430         Type *type_ptr = m_die_to_type.lookup (die);
5431         TypeList* type_list = GetTypeList();
5432         if (type_ptr == NULL)
5433         {
5434             ClangASTContext &ast = GetClangASTContext();
5435             if (type_is_new_ptr)
5436                 *type_is_new_ptr = true;
5437 
5438             const dw_tag_t tag = die->Tag();
5439 
5440             bool is_forward_declaration = false;
5441             DWARFDebugInfoEntry::Attributes attributes;
5442             const char *type_name_cstr = NULL;
5443             ConstString type_name_const_str;
5444             Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
5445             uint64_t byte_size = 0;
5446             Declaration decl;
5447 
5448             Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
5449             clang_type_t clang_type = NULL;
5450 
5451             dw_attr_t attr;
5452 
5453             switch (tag)
5454             {
5455             case DW_TAG_base_type:
5456             case DW_TAG_pointer_type:
5457             case DW_TAG_reference_type:
5458             case DW_TAG_rvalue_reference_type:
5459             case DW_TAG_typedef:
5460             case DW_TAG_const_type:
5461             case DW_TAG_restrict_type:
5462             case DW_TAG_volatile_type:
5463             case DW_TAG_unspecified_type:
5464                 {
5465                     // Set a bit that lets us know that we are currently parsing this
5466                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5467 
5468                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5469                     uint32_t encoding = 0;
5470                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
5471 
5472                     if (num_attributes > 0)
5473                     {
5474                         uint32_t i;
5475                         for (i=0; i<num_attributes; ++i)
5476                         {
5477                             attr = attributes.AttributeAtIndex(i);
5478                             DWARFFormValue form_value;
5479                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5480                             {
5481                                 switch (attr)
5482                                 {
5483                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
5484                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
5485                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
5486                                 case DW_AT_name:
5487 
5488                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5489                                     // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
5490                                     // include the "&"...
5491                                     if (tag == DW_TAG_reference_type)
5492                                     {
5493                                         if (strchr (type_name_cstr, '&') == NULL)
5494                                             type_name_cstr = NULL;
5495                                     }
5496                                     if (type_name_cstr)
5497                                         type_name_const_str.SetCString(type_name_cstr);
5498                                     break;
5499                                 case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
5500                                 case DW_AT_encoding:    encoding = form_value.Unsigned(); break;
5501                                 case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
5502                                 default:
5503                                 case DW_AT_sibling:
5504                                     break;
5505                                 }
5506                             }
5507                         }
5508                     }
5509 
5510                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8x\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid);
5511 
5512                     switch (tag)
5513                     {
5514                     default:
5515                         break;
5516 
5517                     case DW_TAG_unspecified_type:
5518                         if (strcmp(type_name_cstr, "nullptr_t") == 0)
5519                         {
5520                             resolve_state = Type::eResolveStateFull;
5521                             clang_type = ast.getASTContext()->NullPtrTy.getAsOpaquePtr();
5522                             break;
5523                         }
5524                         // Fall through to base type below in case we can handle the type there...
5525 
5526                     case DW_TAG_base_type:
5527                         resolve_state = Type::eResolveStateFull;
5528                         clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
5529                                                                                    encoding,
5530                                                                                    byte_size * 8);
5531                         break;
5532 
5533                     case DW_TAG_pointer_type:           encoding_data_type = Type::eEncodingIsPointerUID;           break;
5534                     case DW_TAG_reference_type:         encoding_data_type = Type::eEncodingIsLValueReferenceUID;   break;
5535                     case DW_TAG_rvalue_reference_type:  encoding_data_type = Type::eEncodingIsRValueReferenceUID;   break;
5536                     case DW_TAG_typedef:                encoding_data_type = Type::eEncodingIsTypedefUID;           break;
5537                     case DW_TAG_const_type:             encoding_data_type = Type::eEncodingIsConstUID;             break;
5538                     case DW_TAG_restrict_type:          encoding_data_type = Type::eEncodingIsRestrictUID;          break;
5539                     case DW_TAG_volatile_type:          encoding_data_type = Type::eEncodingIsVolatileUID;          break;
5540                     }
5541 
5542                     if (clang_type == NULL && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL)
5543                     {
5544                         bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
5545 
5546                         if (translation_unit_is_objc)
5547                         {
5548                             if (type_name_cstr != NULL)
5549                             {
5550                                 static ConstString g_objc_type_name_id("id");
5551                                 static ConstString g_objc_type_name_Class("Class");
5552                                 static ConstString g_objc_type_name_selector("SEL");
5553 
5554                                 if (type_name_const_str == g_objc_type_name_id)
5555                                 {
5556                                     if (log)
5557                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
5558                                                                                   die->GetOffset(),
5559                                                                                   DW_TAG_value_to_name(die->Tag()),
5560                                                                                   die->GetName(this, dwarf_cu));
5561                                     clang_type = ast.GetBuiltInType_objc_id();
5562                                     encoding_data_type = Type::eEncodingIsUID;
5563                                     encoding_uid = LLDB_INVALID_UID;
5564                                     resolve_state = Type::eResolveStateFull;
5565 
5566                                 }
5567                                 else if (type_name_const_str == g_objc_type_name_Class)
5568                                 {
5569                                     if (log)
5570                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
5571                                                                                   die->GetOffset(),
5572                                                                                   DW_TAG_value_to_name(die->Tag()),
5573                                                                                   die->GetName(this, dwarf_cu));
5574                                     clang_type = ast.GetBuiltInType_objc_Class();
5575                                     encoding_data_type = Type::eEncodingIsUID;
5576                                     encoding_uid = LLDB_INVALID_UID;
5577                                     resolve_state = Type::eResolveStateFull;
5578                                 }
5579                                 else if (type_name_const_str == g_objc_type_name_selector)
5580                                 {
5581                                     if (log)
5582                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
5583                                                                                   die->GetOffset(),
5584                                                                                   DW_TAG_value_to_name(die->Tag()),
5585                                                                                   die->GetName(this, dwarf_cu));
5586                                     clang_type = ast.GetBuiltInType_objc_selector();
5587                                     encoding_data_type = Type::eEncodingIsUID;
5588                                     encoding_uid = LLDB_INVALID_UID;
5589                                     resolve_state = Type::eResolveStateFull;
5590                                 }
5591                             }
5592                             else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID)
5593                             {
5594                                 // Clang sometimes erroneously emits id as objc_object*.  In that case we fix up the type to "id".
5595 
5596                                 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid);
5597 
5598                                 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type)
5599                                 {
5600                                     if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL))
5601                                     {
5602                                         if (!strcmp(struct_name, "objc_object"))
5603                                         {
5604                                             if (log)
5605                                                 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
5606                                                                                           die->GetOffset(),
5607                                                                                           DW_TAG_value_to_name(die->Tag()),
5608                                                                                           die->GetName(this, dwarf_cu));
5609                                             clang_type = ast.GetBuiltInType_objc_id();
5610                                             encoding_data_type = Type::eEncodingIsUID;
5611                                             encoding_uid = LLDB_INVALID_UID;
5612                                             resolve_state = Type::eResolveStateFull;
5613                                         }
5614                                     }
5615                                 }
5616                             }
5617                         }
5618                     }
5619 
5620                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
5621                                              this,
5622                                              type_name_const_str,
5623                                              byte_size,
5624                                              NULL,
5625                                              encoding_uid,
5626                                              encoding_data_type,
5627                                              &decl,
5628                                              clang_type,
5629                                              resolve_state));
5630 
5631                     m_die_to_type[die] = type_sp.get();
5632 
5633 //                  Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false);
5634 //                  if (encoding_type != NULL)
5635 //                  {
5636 //                      if (encoding_type != DIE_IS_BEING_PARSED)
5637 //                          type_sp->SetEncodingType(encoding_type);
5638 //                      else
5639 //                          m_indirect_fixups.push_back(type_sp.get());
5640 //                  }
5641                 }
5642                 break;
5643 
5644             case DW_TAG_structure_type:
5645             case DW_TAG_union_type:
5646             case DW_TAG_class_type:
5647                 {
5648                     // Set a bit that lets us know that we are currently parsing this
5649                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5650                     bool byte_size_valid = false;
5651 
5652                     LanguageType class_language = eLanguageTypeUnknown;
5653                     bool is_complete_objc_class = false;
5654                     //bool struct_is_class = false;
5655                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5656                     if (num_attributes > 0)
5657                     {
5658                         uint32_t i;
5659                         for (i=0; i<num_attributes; ++i)
5660                         {
5661                             attr = attributes.AttributeAtIndex(i);
5662                             DWARFFormValue form_value;
5663                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5664                             {
5665                                 switch (attr)
5666                                 {
5667                                 case DW_AT_decl_file:
5668                                     if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid())
5669 									{
5670 										// llvm-gcc outputs invalid DW_AT_decl_file attributes that always
5671 										// point to the compile unit file, so we clear this invalid value
5672 										// so that we can still unique types efficiently.
5673                                         decl.SetFile(FileSpec ("<invalid>", false));
5674 									}
5675                                     else
5676                                         decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned()));
5677                                     break;
5678 
5679                                 case DW_AT_decl_line:
5680                                     decl.SetLine(form_value.Unsigned());
5681                                     break;
5682 
5683                                 case DW_AT_decl_column:
5684                                     decl.SetColumn(form_value.Unsigned());
5685                                     break;
5686 
5687                                 case DW_AT_name:
5688                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5689                                     type_name_const_str.SetCString(type_name_cstr);
5690                                     break;
5691 
5692                                 case DW_AT_byte_size:
5693                                     byte_size = form_value.Unsigned();
5694                                     byte_size_valid = true;
5695                                     break;
5696 
5697                                 case DW_AT_accessibility:
5698                                     accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
5699                                     break;
5700 
5701                                 case DW_AT_declaration:
5702                                     is_forward_declaration = form_value.Unsigned() != 0;
5703                                     break;
5704 
5705                                 case DW_AT_APPLE_runtime_class:
5706                                     class_language = (LanguageType)form_value.Signed();
5707                                     break;
5708 
5709                                 case DW_AT_APPLE_objc_complete_type:
5710                                     is_complete_objc_class = form_value.Signed();
5711                                     break;
5712 
5713                                 case DW_AT_allocated:
5714                                 case DW_AT_associated:
5715                                 case DW_AT_data_location:
5716                                 case DW_AT_description:
5717                                 case DW_AT_start_scope:
5718                                 case DW_AT_visibility:
5719                                 default:
5720                                 case DW_AT_sibling:
5721                                     break;
5722                                 }
5723                             }
5724                         }
5725                     }
5726 
5727                     UniqueDWARFASTType unique_ast_entry;
5728 
5729                     // Only try and unique the type if it has a name.
5730                     if (type_name_const_str &&
5731                         GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
5732                                                          this,
5733                                                          dwarf_cu,
5734                                                          die,
5735                                                          decl,
5736                                                          byte_size_valid ? byte_size : -1,
5737                                                          unique_ast_entry))
5738                     {
5739                         // We have already parsed this type or from another
5740                         // compile unit. GCC loves to use the "one definition
5741                         // rule" which can result in multiple definitions
5742                         // of the same class over and over in each compile
5743                         // unit.
5744                         type_sp = unique_ast_entry.m_type_sp;
5745                         if (type_sp)
5746                         {
5747                             m_die_to_type[die] = type_sp.get();
5748                             return type_sp;
5749                         }
5750                     }
5751 
5752                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
5753 
5754                     int tag_decl_kind = -1;
5755                     AccessType default_accessibility = eAccessNone;
5756                     if (tag == DW_TAG_structure_type)
5757                     {
5758                         tag_decl_kind = clang::TTK_Struct;
5759                         default_accessibility = eAccessPublic;
5760                     }
5761                     else if (tag == DW_TAG_union_type)
5762                     {
5763                         tag_decl_kind = clang::TTK_Union;
5764                         default_accessibility = eAccessPublic;
5765                     }
5766                     else if (tag == DW_TAG_class_type)
5767                     {
5768                         tag_decl_kind = clang::TTK_Class;
5769                         default_accessibility = eAccessPrivate;
5770                     }
5771 
5772                     if (byte_size_valid && byte_size == 0 && type_name_cstr &&
5773                         die->HasChildren() == false &&
5774                         sc.comp_unit->GetLanguage() == eLanguageTypeObjC)
5775                     {
5776                         // Work around an issue with clang at the moment where
5777                         // forward declarations for objective C classes are emitted
5778                         // as:
5779                         //  DW_TAG_structure_type [2]
5780                         //  DW_AT_name( "ForwardObjcClass" )
5781                         //  DW_AT_byte_size( 0x00 )
5782                         //  DW_AT_decl_file( "..." )
5783                         //  DW_AT_decl_line( 1 )
5784                         //
5785                         // Note that there is no DW_AT_declaration and there are
5786                         // no children, and the byte size is zero.
5787                         is_forward_declaration = true;
5788                     }
5789 
5790                     if (class_language == eLanguageTypeObjC ||
5791                         class_language == eLanguageTypeObjC_plus_plus)
5792                     {
5793                         if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
5794                         {
5795                             // We have a valid eSymbolTypeObjCClass class symbol whose
5796                             // name matches the current objective C class that we
5797                             // are trying to find and this DIE isn't the complete
5798                             // definition (we checked is_complete_objc_class above and
5799                             // know it is false), so the real definition is in here somewhere
5800                             type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
5801 
5802                             if (!type_sp && GetDebugMapSymfile ())
5803                             {
5804                                 // We weren't able to find a full declaration in
5805                                 // this DWARF, see if we have a declaration anywhere
5806                                 // else...
5807                                 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
5808                             }
5809 
5810                             if (type_sp)
5811                             {
5812                                 if (log)
5813                                 {
5814                                     GetObjectFile()->GetModule()->LogMessage (log,
5815                                                                               "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64,
5816                                                                               this,
5817                                                                               die->GetOffset(),
5818                                                                               DW_TAG_value_to_name(tag),
5819                                                                               type_name_cstr,
5820                                                                               type_sp->GetID());
5821                                 }
5822 
5823                                 // We found a real definition for this type elsewhere
5824                                 // so lets use it and cache the fact that we found
5825                                 // a complete type for this die
5826                                 m_die_to_type[die] = type_sp.get();
5827                                 return type_sp;
5828                             }
5829                         }
5830                     }
5831 
5832 
5833                     if (is_forward_declaration)
5834                     {
5835                         // We have a forward declaration to a type and we need
5836                         // to try and find a full declaration. We look in the
5837                         // current type index just in case we have a forward
5838                         // declaration followed by an actual declarations in the
5839                         // DWARF. If this fails, we need to look elsewhere...
5840                         if (log)
5841                         {
5842                             GetObjectFile()->GetModule()->LogMessage (log,
5843                                                                       "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
5844                                                                       this,
5845                                                                       die->GetOffset(),
5846                                                                       DW_TAG_value_to_name(tag),
5847                                                                       type_name_cstr);
5848                         }
5849 
5850                         DWARFDeclContext die_decl_ctx;
5851                         die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx);
5852 
5853                         //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
5854                         type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
5855 
5856                         if (!type_sp && GetDebugMapSymfile ())
5857                         {
5858                             // We weren't able to find a full declaration in
5859                             // this DWARF, see if we have a declaration anywhere
5860                             // else...
5861                             type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
5862                         }
5863 
5864                         if (type_sp)
5865                         {
5866                             if (log)
5867                             {
5868                                 GetObjectFile()->GetModule()->LogMessage (log,
5869                                                                           "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64,
5870                                                                           this,
5871                                                                           die->GetOffset(),
5872                                                                           DW_TAG_value_to_name(tag),
5873                                                                           type_name_cstr,
5874                                                                           type_sp->GetID());
5875                             }
5876 
5877                             // We found a real definition for this type elsewhere
5878                             // so lets use it and cache the fact that we found
5879                             // a complete type for this die
5880                             m_die_to_type[die] = type_sp.get();
5881                             return type_sp;
5882                         }
5883                     }
5884                     assert (tag_decl_kind != -1);
5885                     bool clang_type_was_created = false;
5886                     clang_type = m_forward_decl_die_to_clang_type.lookup (die);
5887                     if (clang_type == NULL)
5888                     {
5889                         const DWARFDebugInfoEntry *decl_ctx_die;
5890 
5891                         clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
5892                         if (accessibility == eAccessNone && decl_ctx)
5893                         {
5894                             // Check the decl context that contains this class/struct/union.
5895                             // If it is a class we must give it an accessability.
5896                             const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
5897                             if (DeclKindIsCXXClass (containing_decl_kind))
5898                                 accessibility = default_accessibility;
5899                         }
5900 
5901                         ClangASTMetadata metadata;
5902                         metadata.SetUserID(MakeUserID(die->GetOffset()));
5903                         metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die));
5904 
5905                         if (type_name_cstr && strchr (type_name_cstr, '<'))
5906                         {
5907                             ClangASTContext::TemplateParameterInfos template_param_infos;
5908                             if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
5909                             {
5910                                 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
5911                                                                                                         accessibility,
5912                                                                                                         type_name_cstr,
5913                                                                                                         tag_decl_kind,
5914                                                                                                         template_param_infos);
5915 
5916                                 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
5917                                                                                                                                                class_template_decl,
5918                                                                                                                                                tag_decl_kind,
5919                                                                                                                                                template_param_infos);
5920                                 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
5921                                 clang_type_was_created = true;
5922 
5923                                 GetClangASTContext().SetMetadata (class_template_decl, metadata);
5924                                 GetClangASTContext().SetMetadata (class_specialization_decl, metadata);
5925                             }
5926                         }
5927 
5928                         if (!clang_type_was_created)
5929                         {
5930                             clang_type_was_created = true;
5931                             clang_type = ast.CreateRecordType (decl_ctx,
5932                                                                accessibility,
5933                                                                type_name_cstr,
5934                                                                tag_decl_kind,
5935                                                                class_language,
5936                                                                &metadata);
5937                         }
5938                     }
5939 
5940                     // Store a forward declaration to this class type in case any
5941                     // parameters in any class methods need it for the clang
5942                     // types for function prototypes.
5943                     LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die);
5944                     type_sp.reset (new Type (MakeUserID(die->GetOffset()),
5945                                              this,
5946                                              type_name_const_str,
5947                                              byte_size,
5948                                              NULL,
5949                                              LLDB_INVALID_UID,
5950                                              Type::eEncodingIsUID,
5951                                              &decl,
5952                                              clang_type,
5953                                              Type::eResolveStateForward));
5954 
5955                     type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
5956 
5957 
5958                     // Add our type to the unique type map so we don't
5959                     // end up creating many copies of the same type over
5960                     // and over in the ASTContext for our module
5961                     unique_ast_entry.m_type_sp = type_sp;
5962                     unique_ast_entry.m_symfile = this;
5963                     unique_ast_entry.m_cu = dwarf_cu;
5964                     unique_ast_entry.m_die = die;
5965                     unique_ast_entry.m_declaration = decl;
5966                     unique_ast_entry.m_byte_size = byte_size;
5967                     GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
5968                                                        unique_ast_entry);
5969 
5970                     if (!is_forward_declaration)
5971                     {
5972                         // Always start the definition for a class type so that
5973                         // if the class has child classes or types that require
5974                         // the class to be created for use as their decl contexts
5975                         // the class will be ready to accept these child definitions.
5976                         if (die->HasChildren() == false)
5977                         {
5978                             // No children for this struct/union/class, lets finish it
5979                             ast.StartTagDeclarationDefinition (clang_type);
5980                             ast.CompleteTagDeclarationDefinition (clang_type);
5981 
5982                             if (tag == DW_TAG_structure_type) // this only applies in C
5983                             {
5984                                 clang::QualType qual_type = clang::QualType::getFromOpaquePtr (clang_type);
5985                                 const clang::RecordType *record_type = qual_type->getAs<clang::RecordType> ();
5986 
5987                                 if (record_type)
5988                                 {
5989                                     clang::RecordDecl *record_decl = record_type->getDecl();
5990 
5991                                     if (record_decl)
5992                                     {
5993                                         LayoutInfo layout_info;
5994 
5995                                         layout_info.alignment = 0;
5996                                         layout_info.bit_size = 0;
5997 
5998                                         m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
5999                                     }
6000                                 }
6001                             }
6002                         }
6003                         else if (clang_type_was_created)
6004                         {
6005                             // Start the definition if the class is not objective C since
6006                             // the underlying decls respond to isCompleteDefinition(). Objective
6007                             // C decls dont' respond to isCompleteDefinition() so we can't
6008                             // start the declaration definition right away. For C++ classs/union/structs
6009                             // we want to start the definition in case the class is needed as the
6010                             // declaration context for a contained class or type without the need
6011                             // to complete that type..
6012 
6013                             if (class_language != eLanguageTypeObjC &&
6014                                 class_language != eLanguageTypeObjC_plus_plus)
6015                                 ast.StartTagDeclarationDefinition (clang_type);
6016 
6017                             // Leave this as a forward declaration until we need
6018                             // to know the details of the type. lldb_private::Type
6019                             // will automatically call the SymbolFile virtual function
6020                             // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)"
6021                             // When the definition needs to be defined.
6022                             m_forward_decl_die_to_clang_type[die] = clang_type;
6023                             m_forward_decl_clang_type_to_die[ClangASTType::RemoveFastQualifiers (clang_type)] = die;
6024                             ClangASTContext::SetHasExternalStorage (clang_type, true);
6025                         }
6026                     }
6027 
6028                 }
6029                 break;
6030 
6031             case DW_TAG_enumeration_type:
6032                 {
6033                     // Set a bit that lets us know that we are currently parsing this
6034                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6035 
6036                     lldb::user_id_t encoding_uid = DW_INVALID_OFFSET;
6037 
6038                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6039                     if (num_attributes > 0)
6040                     {
6041                         uint32_t i;
6042 
6043                         for (i=0; i<num_attributes; ++i)
6044                         {
6045                             attr = attributes.AttributeAtIndex(i);
6046                             DWARFFormValue form_value;
6047                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6048                             {
6049                                 switch (attr)
6050                                 {
6051                                 case DW_AT_decl_file:       decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6052                                 case DW_AT_decl_line:       decl.SetLine(form_value.Unsigned()); break;
6053                                 case DW_AT_decl_column:     decl.SetColumn(form_value.Unsigned()); break;
6054                                 case DW_AT_name:
6055                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6056                                     type_name_const_str.SetCString(type_name_cstr);
6057                                     break;
6058                                 case DW_AT_type:            encoding_uid = form_value.Reference(dwarf_cu); break;
6059                                 case DW_AT_byte_size:       byte_size = form_value.Unsigned(); break;
6060                                 case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6061                                 case DW_AT_declaration:     break; //is_forward_declaration = form_value.Unsigned() != 0; break;
6062                                 case DW_AT_allocated:
6063                                 case DW_AT_associated:
6064                                 case DW_AT_bit_stride:
6065                                 case DW_AT_byte_stride:
6066                                 case DW_AT_data_location:
6067                                 case DW_AT_description:
6068                                 case DW_AT_start_scope:
6069                                 case DW_AT_visibility:
6070                                 case DW_AT_specification:
6071                                 case DW_AT_abstract_origin:
6072                                 case DW_AT_sibling:
6073                                     break;
6074                                 }
6075                             }
6076                         }
6077 
6078                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6079 
6080                         clang_type_t enumerator_clang_type = NULL;
6081                         clang_type = m_forward_decl_die_to_clang_type.lookup (die);
6082                         if (clang_type == NULL)
6083                         {
6084                             if (encoding_uid != DW_INVALID_OFFSET)
6085                             {
6086                                 Type *enumerator_type = ResolveTypeUID(encoding_uid);
6087                                 if (enumerator_type)
6088                                     enumerator_clang_type = enumerator_type->GetClangFullType();
6089                             }
6090 
6091                             if (enumerator_clang_type == NULL)
6092                                 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL,
6093                                                                                                       DW_ATE_signed,
6094                                                                                                       byte_size * 8);
6095 
6096                             clang_type = ast.CreateEnumerationType (type_name_cstr,
6097                                                                     GetClangDeclContextContainingDIE (dwarf_cu, die, NULL),
6098                                                                     decl,
6099                                                                     enumerator_clang_type);
6100                         }
6101                         else
6102                         {
6103                             enumerator_clang_type = ClangASTContext::GetEnumerationIntegerType (clang_type);
6104                         }
6105 
6106                         LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die);
6107 
6108                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6109                                                  this,
6110                                                  type_name_const_str,
6111                                                  byte_size,
6112                                                  NULL,
6113                                                  encoding_uid,
6114                                                  Type::eEncodingIsUID,
6115                                                  &decl,
6116                                                  clang_type,
6117                                                  Type::eResolveStateForward));
6118 
6119                         ast.StartTagDeclarationDefinition (clang_type);
6120                         if (die->HasChildren())
6121                         {
6122                             SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
6123                             bool is_signed = false;
6124                             ast.IsIntegerType(enumerator_clang_type, is_signed);
6125                             ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die);
6126                         }
6127                         ast.CompleteTagDeclarationDefinition (clang_type);
6128                     }
6129                 }
6130                 break;
6131 
6132             case DW_TAG_inlined_subroutine:
6133             case DW_TAG_subprogram:
6134             case DW_TAG_subroutine_type:
6135                 {
6136                     // Set a bit that lets us know that we are currently parsing this
6137                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6138 
6139                     //const char *mangled = NULL;
6140                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6141                     bool is_variadic = false;
6142                     bool is_inline = false;
6143                     bool is_static = false;
6144                     bool is_virtual = false;
6145                     bool is_explicit = false;
6146                     bool is_artificial = false;
6147                     dw_offset_t specification_die_offset = DW_INVALID_OFFSET;
6148                     dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET;
6149                     dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET;
6150 
6151                     unsigned type_quals = 0;
6152                     clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
6153 
6154 
6155                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6156                     if (num_attributes > 0)
6157                     {
6158                         uint32_t i;
6159                         for (i=0; i<num_attributes; ++i)
6160                         {
6161                             attr = attributes.AttributeAtIndex(i);
6162                             DWARFFormValue form_value;
6163                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6164                             {
6165                                 switch (attr)
6166                                 {
6167                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6168                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6169                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6170                                 case DW_AT_name:
6171                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6172                                     type_name_const_str.SetCString(type_name_cstr);
6173                                     break;
6174 
6175                                 case DW_AT_linkage_name:
6176                                 case DW_AT_MIPS_linkage_name:   break; // mangled = form_value.AsCString(&get_debug_str_data()); break;
6177                                 case DW_AT_type:                type_die_offset = form_value.Reference(dwarf_cu); break;
6178                                 case DW_AT_accessibility:       accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6179                                 case DW_AT_declaration:         break; // is_forward_declaration = form_value.Unsigned() != 0; break;
6180                                 case DW_AT_inline:              is_inline = form_value.Unsigned() != 0; break;
6181                                 case DW_AT_virtuality:          is_virtual = form_value.Unsigned() != 0;  break;
6182                                 case DW_AT_explicit:            is_explicit = form_value.Unsigned() != 0;  break;
6183                                 case DW_AT_artificial:          is_artificial = form_value.Unsigned() != 0;  break;
6184 
6185 
6186                                 case DW_AT_external:
6187                                     if (form_value.Unsigned())
6188                                     {
6189                                         if (storage == clang::SC_None)
6190                                             storage = clang::SC_Extern;
6191                                         else
6192                                             storage = clang::SC_PrivateExtern;
6193                                     }
6194                                     break;
6195 
6196                                 case DW_AT_specification:
6197                                     specification_die_offset = form_value.Reference(dwarf_cu);
6198                                     break;
6199 
6200                                 case DW_AT_abstract_origin:
6201                                     abstract_origin_die_offset = form_value.Reference(dwarf_cu);
6202                                     break;
6203 
6204                                 case DW_AT_object_pointer:
6205                                     object_pointer_die_offset = form_value.Reference(dwarf_cu);
6206                                     break;
6207 
6208                                 case DW_AT_allocated:
6209                                 case DW_AT_associated:
6210                                 case DW_AT_address_class:
6211                                 case DW_AT_calling_convention:
6212                                 case DW_AT_data_location:
6213                                 case DW_AT_elemental:
6214                                 case DW_AT_entry_pc:
6215                                 case DW_AT_frame_base:
6216                                 case DW_AT_high_pc:
6217                                 case DW_AT_low_pc:
6218                                 case DW_AT_prototyped:
6219                                 case DW_AT_pure:
6220                                 case DW_AT_ranges:
6221                                 case DW_AT_recursive:
6222                                 case DW_AT_return_addr:
6223                                 case DW_AT_segment:
6224                                 case DW_AT_start_scope:
6225                                 case DW_AT_static_link:
6226                                 case DW_AT_trampoline:
6227                                 case DW_AT_visibility:
6228                                 case DW_AT_vtable_elem_location:
6229                                 case DW_AT_description:
6230                                 case DW_AT_sibling:
6231                                     break;
6232                                 }
6233                             }
6234                         }
6235                     }
6236 
6237                     std::string object_pointer_name;
6238                     if (object_pointer_die_offset != DW_INVALID_OFFSET)
6239                     {
6240                         // Get the name from the object pointer die
6241                         StreamString s;
6242                         if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s))
6243                         {
6244                             object_pointer_name.assign(s.GetData());
6245                         }
6246                     }
6247 
6248                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6249 
6250                     clang_type_t return_clang_type = NULL;
6251                     Type *func_type = NULL;
6252 
6253                     if (type_die_offset != DW_INVALID_OFFSET)
6254                         func_type = ResolveTypeUID(type_die_offset);
6255 
6256                     if (func_type)
6257                         return_clang_type = func_type->GetClangForwardType();
6258                     else
6259                         return_clang_type = ast.GetBuiltInType_void();
6260 
6261 
6262                     std::vector<clang_type_t> function_param_types;
6263                     std::vector<clang::ParmVarDecl*> function_param_decls;
6264 
6265                     // Parse the function children for the parameters
6266 
6267                     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
6268                     clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6269                     const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
6270 
6271                     const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
6272                     // Start off static. This will be set to false in ParseChildParameters(...)
6273                     // if we find a "this" paramters as the first parameter
6274                     if (is_cxx_method)
6275                         is_static = true;
6276                     ClangASTContext::TemplateParameterInfos template_param_infos;
6277 
6278                     if (die->HasChildren())
6279                     {
6280                         bool skip_artificial = true;
6281                         ParseChildParameters (sc,
6282                                               containing_decl_ctx,
6283                                               dwarf_cu,
6284                                               die,
6285                                               skip_artificial,
6286                                               is_static,
6287                                               type_list,
6288                                               function_param_types,
6289                                               function_param_decls,
6290                                               type_quals,
6291                                               template_param_infos);
6292                     }
6293 
6294                     // clang_type will get the function prototype clang type after this call
6295                     clang_type = ast.CreateFunctionType (return_clang_type,
6296                                                          function_param_types.data(),
6297                                                          function_param_types.size(),
6298                                                          is_variadic,
6299                                                          type_quals);
6300 
6301                     if (type_name_cstr)
6302                     {
6303                         bool type_handled = false;
6304                         if (tag == DW_TAG_subprogram)
6305                         {
6306                             ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true);
6307                             if (objc_method.IsValid(true))
6308                             {
6309                                 SymbolContext empty_sc;
6310                                 clang_type_t class_opaque_type = NULL;
6311                                 ConstString class_name(objc_method.GetClassName());
6312                                 if (class_name)
6313                                 {
6314                                     TypeList types;
6315                                     TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false));
6316 
6317                                     if (complete_objc_class_type_sp)
6318                                     {
6319                                         clang_type_t type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
6320                                         if (ClangASTContext::IsObjCClassType (type_clang_forward_type))
6321                                             class_opaque_type = type_clang_forward_type;
6322                                     }
6323                                 }
6324 
6325                                 if (class_opaque_type)
6326                                 {
6327                                     // If accessibility isn't set to anything valid, assume public for
6328                                     // now...
6329                                     if (accessibility == eAccessNone)
6330                                         accessibility = eAccessPublic;
6331 
6332                                     clang::ObjCMethodDecl *objc_method_decl = ast.AddMethodToObjCObjectType (class_opaque_type,
6333                                                                                                              type_name_cstr,
6334                                                                                                              clang_type,
6335                                                                                                              accessibility,
6336                                                                                                              is_artificial);
6337                                     type_handled = objc_method_decl != NULL;
6338                                     if (type_handled)
6339                                     {
6340                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
6341                                         GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset()));
6342                                     }
6343                                     else
6344                                     {
6345                                         GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message",
6346                                                                                    die->GetOffset(),
6347                                                                                    tag,
6348                                                                                    DW_TAG_value_to_name(tag));
6349                                     }
6350                                 }
6351                             }
6352                             else if (is_cxx_method)
6353                             {
6354                                 // Look at the parent of this DIE and see if is is
6355                                 // a class or struct and see if this is actually a
6356                                 // C++ method
6357                                 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die);
6358                                 if (class_type)
6359                                 {
6360                                     if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset()))
6361                                     {
6362                                         // We uniqued the parent class of this function to another class
6363                                         // so we now need to associate all dies under "decl_ctx_die" to
6364                                         // DIEs in the DIE for "class_type"...
6365                                         SymbolFileDWARF *class_symfile = NULL;
6366                                         DWARFCompileUnitSP class_type_cu_sp;
6367                                         const DWARFDebugInfoEntry *class_type_die = NULL;
6368 
6369                                         SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
6370                                         if (debug_map_symfile)
6371                                         {
6372                                             class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID()));
6373                                             class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6374                                         }
6375                                         else
6376                                         {
6377                                             class_symfile = this;
6378                                             class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6379                                         }
6380                                         if (class_type_die)
6381                                         {
6382                                             llvm::SmallVector<const DWARFDebugInfoEntry *, 0> failures;
6383 
6384                                             CopyUniqueClassMethodTypes (class_symfile,
6385                                                                         class_type,
6386                                                                         class_type_cu_sp.get(),
6387                                                                         class_type_die,
6388                                                                         dwarf_cu,
6389                                                                         decl_ctx_die,
6390                                                                         failures);
6391 
6392                                             // FIXME do something with these failures that's smarter than
6393                                             // just dropping them on the ground.  Unfortunately classes don't
6394                                             // like having stuff added to them after their definitions are
6395                                             // complete...
6396 
6397                                             type_ptr = m_die_to_type[die];
6398                                             if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6399                                             {
6400                                                 type_sp = type_ptr->shared_from_this();
6401                                                 break;
6402                                             }
6403                                         }
6404                                     }
6405 
6406                                     if (specification_die_offset != DW_INVALID_OFFSET)
6407                                     {
6408                                         // We have a specification which we are going to base our function
6409                                         // prototype off of, so we need this type to be completed so that the
6410                                         // m_die_to_decl_ctx for the method in the specification has a valid
6411                                         // clang decl context.
6412                                         class_type->GetClangForwardType();
6413                                         // If we have a specification, then the function type should have been
6414                                         // made with the specification and not with this die.
6415                                         DWARFCompileUnitSP spec_cu_sp;
6416                                         const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
6417                                         clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
6418                                         if (spec_clang_decl_ctx)
6419                                         {
6420                                             LinkDeclContextToDIE(spec_clang_decl_ctx, die);
6421                                         }
6422                                         else
6423                                         {
6424                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n",
6425                                                                                          MakeUserID(die->GetOffset()),
6426                                                                                          specification_die_offset);
6427                                         }
6428                                         type_handled = true;
6429                                     }
6430                                     else if (abstract_origin_die_offset != DW_INVALID_OFFSET)
6431                                     {
6432                                         // We have a specification which we are going to base our function
6433                                         // prototype off of, so we need this type to be completed so that the
6434                                         // m_die_to_decl_ctx for the method in the abstract origin has a valid
6435                                         // clang decl context.
6436                                         class_type->GetClangForwardType();
6437 
6438                                         DWARFCompileUnitSP abs_cu_sp;
6439                                         const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
6440                                         clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
6441                                         if (abs_clang_decl_ctx)
6442                                         {
6443                                             LinkDeclContextToDIE (abs_clang_decl_ctx, die);
6444                                         }
6445                                         else
6446                                         {
6447                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n",
6448                                                                                          MakeUserID(die->GetOffset()),
6449                                                                                          abstract_origin_die_offset);
6450                                         }
6451                                         type_handled = true;
6452                                     }
6453                                     else
6454                                     {
6455                                         clang_type_t class_opaque_type = class_type->GetClangForwardType();
6456                                         if (ClangASTContext::IsCXXClassType (class_opaque_type))
6457                                         {
6458                                             if (ClangASTContext::IsBeingDefined (class_opaque_type))
6459                                             {
6460                                                 // Neither GCC 4.2 nor clang++ currently set a valid accessibility
6461                                                 // in the DWARF for C++ methods... Default to public for now...
6462                                                 if (accessibility == eAccessNone)
6463                                                     accessibility = eAccessPublic;
6464 
6465                                                 if (!is_static && !die->HasChildren())
6466                                                 {
6467                                                     // We have a C++ member function with no children (this pointer!)
6468                                                     // and clang will get mad if we try and make a function that isn't
6469                                                     // well formed in the DWARF, so we will just skip it...
6470                                                     type_handled = true;
6471                                                 }
6472                                                 else
6473                                                 {
6474                                                     clang::CXXMethodDecl *cxx_method_decl;
6475                                                     // REMOVE THE CRASH DESCRIPTION BELOW
6476                                                     Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s/%s",
6477                                                                                          type_name_cstr,
6478                                                                                          class_type->GetName().GetCString(),
6479                                                                                          MakeUserID(die->GetOffset()),
6480                                                                                          m_obj_file->GetFileSpec().GetDirectory().GetCString(),
6481                                                                                          m_obj_file->GetFileSpec().GetFilename().GetCString());
6482 
6483                                                     const bool is_attr_used = false;
6484 
6485                                                     cxx_method_decl = ast.AddMethodToCXXRecordType (class_opaque_type,
6486                                                                                                     type_name_cstr,
6487                                                                                                     clang_type,
6488                                                                                                     accessibility,
6489                                                                                                     is_virtual,
6490                                                                                                     is_static,
6491                                                                                                     is_inline,
6492                                                                                                     is_explicit,
6493                                                                                                     is_attr_used,
6494                                                                                                     is_artificial);
6495 
6496                                                     type_handled = cxx_method_decl != NULL;
6497 
6498                                                     if (type_handled)
6499                                                     {
6500                                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
6501 
6502                                                         Host::SetCrashDescription (NULL);
6503 
6504 
6505                                                         ClangASTMetadata metadata;
6506                                                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6507 
6508                                                         if (!object_pointer_name.empty())
6509                                                         {
6510                                                             metadata.SetObjectPtrName(object_pointer_name.c_str());
6511                                                             if (log)
6512                                                                 log->Printf ("Setting object pointer name: %s on method object %p.\n",
6513                                                                              object_pointer_name.c_str(),
6514                                                                              cxx_method_decl);
6515                                                         }
6516                                                         GetClangASTContext().SetMetadata (cxx_method_decl, metadata);
6517                                                     }
6518                                                 }
6519                                             }
6520                                             else
6521                                             {
6522                                                 // We were asked to parse the type for a method in a class, yet the
6523                                                 // class hasn't been asked to complete itself through the
6524                                                 // clang::ExternalASTSource protocol, so we need to just have the
6525                                                 // class complete itself and do things the right way, then our
6526                                                 // DIE should then have an entry in the m_die_to_type map. First
6527                                                 // we need to modify the m_die_to_type so it doesn't think we are
6528                                                 // trying to parse this DIE anymore...
6529                                                 m_die_to_type[die] = NULL;
6530 
6531                                                 // Now we get the full type to force our class type to complete itself
6532                                                 // using the clang::ExternalASTSource protocol which will parse all
6533                                                 // base classes and all methods (including the method for this DIE).
6534                                                 class_type->GetClangFullType();
6535 
6536                                                 // The type for this DIE should have been filled in the function call above
6537                                                 type_ptr = m_die_to_type[die];
6538                                                 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6539                                                 {
6540                                                     type_sp = type_ptr->shared_from_this();
6541                                                     break;
6542                                                 }
6543 
6544                                                 // FIXME This is fixing some even uglier behavior but we really need to
6545                                                 // uniq the methods of each class as well as the class itself.
6546                                                 // <rdar://problem/11240464>
6547                                                 type_handled = true;
6548                                             }
6549                                         }
6550                                     }
6551                                 }
6552                             }
6553                         }
6554 
6555                         if (!type_handled)
6556                         {
6557                             // We just have a function that isn't part of a class
6558                             clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (containing_decl_ctx,
6559                                                                                                 type_name_cstr,
6560                                                                                                 clang_type,
6561                                                                                                 storage,
6562                                                                                                 is_inline);
6563 
6564 //                            if (template_param_infos.GetSize() > 0)
6565 //                            {
6566 //                                clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
6567 //                                                                                                                  function_decl,
6568 //                                                                                                                  type_name_cstr,
6569 //                                                                                                                  template_param_infos);
6570 //
6571 //                                ast.CreateFunctionTemplateSpecializationInfo (function_decl,
6572 //                                                                              func_template_decl,
6573 //                                                                              template_param_infos);
6574 //                            }
6575                             // Add the decl to our DIE to decl context map
6576                             assert (function_decl);
6577                             LinkDeclContextToDIE(function_decl, die);
6578                             if (!function_param_decls.empty())
6579                                 ast.SetFunctionParameters (function_decl,
6580                                                            &function_param_decls.front(),
6581                                                            function_param_decls.size());
6582 
6583                             ClangASTMetadata metadata;
6584                             metadata.SetUserID(MakeUserID(die->GetOffset()));
6585 
6586                             if (!object_pointer_name.empty())
6587                             {
6588                                 metadata.SetObjectPtrName(object_pointer_name.c_str());
6589                                 if (log)
6590                                     log->Printf ("Setting object pointer name: %s on function object %p.",
6591                                                  object_pointer_name.c_str(),
6592                                                 function_decl);
6593                             }
6594                             GetClangASTContext().SetMetadata (function_decl, metadata);
6595                         }
6596                     }
6597                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6598                                              this,
6599                                              type_name_const_str,
6600                                              0,
6601                                              NULL,
6602                                              LLDB_INVALID_UID,
6603                                              Type::eEncodingIsUID,
6604                                              &decl,
6605                                              clang_type,
6606                                              Type::eResolveStateFull));
6607                     assert(type_sp.get());
6608                 }
6609                 break;
6610 
6611             case DW_TAG_array_type:
6612                 {
6613                     // Set a bit that lets us know that we are currently parsing this
6614                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6615 
6616                     lldb::user_id_t type_die_offset = DW_INVALID_OFFSET;
6617                     int64_t first_index = 0;
6618                     uint32_t byte_stride = 0;
6619                     uint32_t bit_stride = 0;
6620                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6621 
6622                     if (num_attributes > 0)
6623                     {
6624                         uint32_t i;
6625                         for (i=0; i<num_attributes; ++i)
6626                         {
6627                             attr = attributes.AttributeAtIndex(i);
6628                             DWARFFormValue form_value;
6629                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6630                             {
6631                                 switch (attr)
6632                                 {
6633                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6634                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6635                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6636                                 case DW_AT_name:
6637                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6638                                     type_name_const_str.SetCString(type_name_cstr);
6639                                     break;
6640 
6641                                 case DW_AT_type:            type_die_offset = form_value.Reference(dwarf_cu); break;
6642                                 case DW_AT_byte_size:       break; // byte_size = form_value.Unsigned(); break;
6643                                 case DW_AT_byte_stride:     byte_stride = form_value.Unsigned(); break;
6644                                 case DW_AT_bit_stride:      bit_stride = form_value.Unsigned(); break;
6645                                 case DW_AT_accessibility:   break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6646                                 case DW_AT_declaration:     break; // is_forward_declaration = form_value.Unsigned() != 0; break;
6647                                 case DW_AT_allocated:
6648                                 case DW_AT_associated:
6649                                 case DW_AT_data_location:
6650                                 case DW_AT_description:
6651                                 case DW_AT_ordering:
6652                                 case DW_AT_start_scope:
6653                                 case DW_AT_visibility:
6654                                 case DW_AT_specification:
6655                                 case DW_AT_abstract_origin:
6656                                 case DW_AT_sibling:
6657                                     break;
6658                                 }
6659                             }
6660                         }
6661 
6662                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6663 
6664                         Type *element_type = ResolveTypeUID(type_die_offset);
6665 
6666                         if (element_type)
6667                         {
6668                             std::vector<uint64_t> element_orders;
6669                             ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
6670                             if (byte_stride == 0 && bit_stride == 0)
6671                                 byte_stride = element_type->GetByteSize();
6672                             clang_type_t array_element_type = element_type->GetClangForwardType();
6673                             uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
6674                             uint64_t num_elements = 0;
6675                             std::vector<uint64_t>::const_reverse_iterator pos;
6676                             std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend();
6677                             for (pos = element_orders.rbegin(); pos != end; ++pos)
6678                             {
6679                                 num_elements = *pos;
6680                                 clang_type = ast.CreateArrayType (array_element_type,
6681                                                                   num_elements);
6682                                 array_element_type = clang_type;
6683                                 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride;
6684                             }
6685                             ConstString empty_name;
6686                             type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6687                                                      this,
6688                                                      empty_name,
6689                                                      array_element_bit_stride / 8,
6690                                                      NULL,
6691                                                      type_die_offset,
6692                                                      Type::eEncodingIsUID,
6693                                                      &decl,
6694                                                      clang_type,
6695                                                      Type::eResolveStateFull));
6696                             type_sp->SetEncodingType (element_type);
6697                         }
6698                     }
6699                 }
6700                 break;
6701 
6702             case DW_TAG_ptr_to_member_type:
6703                 {
6704                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6705                     dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET;
6706 
6707                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6708 
6709                     if (num_attributes > 0) {
6710                         uint32_t i;
6711                         for (i=0; i<num_attributes; ++i)
6712                         {
6713                             attr = attributes.AttributeAtIndex(i);
6714                             DWARFFormValue form_value;
6715                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6716                             {
6717                                 switch (attr)
6718                                 {
6719                                     case DW_AT_type:
6720                                         type_die_offset = form_value.Reference(dwarf_cu); break;
6721                                     case DW_AT_containing_type:
6722                                         containing_type_die_offset = form_value.Reference(dwarf_cu); break;
6723                                 }
6724                             }
6725                         }
6726 
6727                         Type *pointee_type = ResolveTypeUID(type_die_offset);
6728                         Type *class_type = ResolveTypeUID(containing_type_die_offset);
6729 
6730                         clang_type_t pointee_clang_type = pointee_type->GetClangForwardType();
6731                         clang_type_t class_clang_type = class_type->GetClangLayoutType();
6732 
6733                         clang_type = ast.CreateMemberPointerType(pointee_clang_type,
6734                                                                  class_clang_type);
6735 
6736                         byte_size = ClangASTType::GetClangTypeBitWidth (ast.getASTContext(),
6737                                                                        clang_type) / 8;
6738 
6739                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6740                                                  this,
6741                                                  type_name_const_str,
6742                                                  byte_size,
6743                                                  NULL,
6744                                                  LLDB_INVALID_UID,
6745                                                  Type::eEncodingIsUID,
6746                                                  NULL,
6747                                                  clang_type,
6748                                                  Type::eResolveStateForward));
6749                     }
6750 
6751                     break;
6752                 }
6753             default:
6754                 GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message",
6755                                                            die->GetOffset(),
6756                                                            tag,
6757                                                            DW_TAG_value_to_name(tag));
6758                 break;
6759             }
6760 
6761             if (type_sp.get())
6762             {
6763                 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
6764                 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
6765 
6766                 SymbolContextScope * symbol_context_scope = NULL;
6767                 if (sc_parent_tag == DW_TAG_compile_unit)
6768                 {
6769                     symbol_context_scope = sc.comp_unit;
6770                 }
6771                 else if (sc.function != NULL)
6772                 {
6773                     symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
6774                     if (symbol_context_scope == NULL)
6775                         symbol_context_scope = sc.function;
6776                 }
6777 
6778                 if (symbol_context_scope != NULL)
6779                 {
6780                     type_sp->SetSymbolContextScope(symbol_context_scope);
6781                 }
6782 
6783                 // We are ready to put this type into the uniqued list up at the module level
6784                 type_list->Insert (type_sp);
6785 
6786                 m_die_to_type[die] = type_sp.get();
6787             }
6788         }
6789         else if (type_ptr != DIE_IS_BEING_PARSED)
6790         {
6791             type_sp = type_ptr->shared_from_this();
6792         }
6793     }
6794     return type_sp;
6795 }
6796 
6797 size_t
6798 SymbolFileDWARF::ParseTypes
6799 (
6800     const SymbolContext& sc,
6801     DWARFCompileUnit* dwarf_cu,
6802     const DWARFDebugInfoEntry *die,
6803     bool parse_siblings,
6804     bool parse_children
6805 )
6806 {
6807     size_t types_added = 0;
6808     while (die != NULL)
6809     {
6810         bool type_is_new = false;
6811         if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
6812         {
6813             if (type_is_new)
6814                 ++types_added;
6815         }
6816 
6817         if (parse_children && die->HasChildren())
6818         {
6819             if (die->Tag() == DW_TAG_subprogram)
6820             {
6821                 SymbolContext child_sc(sc);
6822                 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
6823                 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
6824             }
6825             else
6826                 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
6827         }
6828 
6829         if (parse_siblings)
6830             die = die->GetSibling();
6831         else
6832             die = NULL;
6833     }
6834     return types_added;
6835 }
6836 
6837 
6838 size_t
6839 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
6840 {
6841     assert(sc.comp_unit && sc.function);
6842     size_t functions_added = 0;
6843     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
6844     if (dwarf_cu)
6845     {
6846         dw_offset_t function_die_offset = sc.function->GetID();
6847         const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
6848         if (function_die)
6849         {
6850             ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0);
6851         }
6852     }
6853 
6854     return functions_added;
6855 }
6856 
6857 
6858 size_t
6859 SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
6860 {
6861     // At least a compile unit must be valid
6862     assert(sc.comp_unit);
6863     size_t types_added = 0;
6864     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
6865     if (dwarf_cu)
6866     {
6867         if (sc.function)
6868         {
6869             dw_offset_t function_die_offset = sc.function->GetID();
6870             const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
6871             if (func_die && func_die->HasChildren())
6872             {
6873                 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
6874             }
6875         }
6876         else
6877         {
6878             const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
6879             if (dwarf_cu_die && dwarf_cu_die->HasChildren())
6880             {
6881                 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
6882             }
6883         }
6884     }
6885 
6886     return types_added;
6887 }
6888 
6889 size_t
6890 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
6891 {
6892     if (sc.comp_unit != NULL)
6893     {
6894         DWARFDebugInfo* info = DebugInfo();
6895         if (info == NULL)
6896             return 0;
6897 
6898         if (sc.function)
6899         {
6900             DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get();
6901 
6902             if (dwarf_cu == NULL)
6903                 return 0;
6904 
6905             const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
6906 
6907             dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
6908             if (func_lo_pc != LLDB_INVALID_ADDRESS)
6909             {
6910                 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
6911 
6912                 // Let all blocks know they have parse all their variables
6913                 sc.function->GetBlock (false).SetDidParseVariables (true, true);
6914                 return num_variables;
6915             }
6916         }
6917         else if (sc.comp_unit)
6918         {
6919             DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get();
6920 
6921             if (dwarf_cu == NULL)
6922                 return 0;
6923 
6924             uint32_t vars_added = 0;
6925             VariableListSP variables (sc.comp_unit->GetVariableList(false));
6926 
6927             if (variables.get() == NULL)
6928             {
6929                 variables.reset(new VariableList());
6930                 sc.comp_unit->SetVariableList(variables);
6931 
6932                 DWARFCompileUnit* match_dwarf_cu = NULL;
6933                 const DWARFDebugInfoEntry* die = NULL;
6934                 DIEArray die_offsets;
6935                 if (m_using_apple_tables)
6936                 {
6937                     if (m_apple_names_ap.get())
6938                     {
6939                         DWARFMappedHash::DIEInfoArray hash_data_array;
6940                         if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
6941                                                                     dwarf_cu->GetNextCompileUnitOffset(),
6942                                                                     hash_data_array))
6943                         {
6944                             DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
6945                         }
6946                     }
6947                 }
6948                 else
6949                 {
6950                     // Index if we already haven't to make sure the compile units
6951                     // get indexed and make their global DIE index list
6952                     if (!m_indexed)
6953                         Index ();
6954 
6955                     m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
6956                                                                  dwarf_cu->GetNextCompileUnitOffset(),
6957                                                                  die_offsets);
6958                 }
6959 
6960                 const size_t num_matches = die_offsets.size();
6961                 if (num_matches)
6962                 {
6963                     DWARFDebugInfo* debug_info = DebugInfo();
6964                     for (size_t i=0; i<num_matches; ++i)
6965                     {
6966                         const dw_offset_t die_offset = die_offsets[i];
6967                         die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
6968                         if (die)
6969                         {
6970                             VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
6971                             if (var_sp)
6972                             {
6973                                 variables->AddVariableIfUnique (var_sp);
6974                                 ++vars_added;
6975                             }
6976                         }
6977                         else
6978                         {
6979                             if (m_using_apple_tables)
6980                             {
6981                                 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
6982                             }
6983                         }
6984 
6985                     }
6986                 }
6987             }
6988             return vars_added;
6989         }
6990     }
6991     return 0;
6992 }
6993 
6994 
6995 VariableSP
6996 SymbolFileDWARF::ParseVariableDIE
6997 (
6998     const SymbolContext& sc,
6999     DWARFCompileUnit* dwarf_cu,
7000     const DWARFDebugInfoEntry *die,
7001     const lldb::addr_t func_low_pc
7002 )
7003 {
7004 
7005     VariableSP var_sp (m_die_to_variable_sp[die]);
7006     if (var_sp)
7007         return var_sp;  // Already been parsed!
7008 
7009     const dw_tag_t tag = die->Tag();
7010 
7011     if ((tag == DW_TAG_variable) ||
7012         (tag == DW_TAG_constant) ||
7013         (tag == DW_TAG_formal_parameter && sc.function))
7014     {
7015         DWARFDebugInfoEntry::Attributes attributes;
7016         const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7017         if (num_attributes > 0)
7018         {
7019             const char *name = NULL;
7020             const char *mangled = NULL;
7021             Declaration decl;
7022             uint32_t i;
7023             lldb::user_id_t type_uid = LLDB_INVALID_UID;
7024             DWARFExpression location;
7025             bool is_external = false;
7026             bool is_artificial = false;
7027             bool location_is_const_value_data = false;
7028             bool has_explicit_location = false;
7029             //AccessType accessibility = eAccessNone;
7030 
7031             for (i=0; i<num_attributes; ++i)
7032             {
7033                 dw_attr_t attr = attributes.AttributeAtIndex(i);
7034                 DWARFFormValue form_value;
7035                 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7036                 {
7037                     switch (attr)
7038                     {
7039                     case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
7040                     case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
7041                     case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
7042                     case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
7043                     case DW_AT_linkage_name:
7044                     case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
7045                     case DW_AT_type:        type_uid = form_value.Reference(dwarf_cu); break;
7046                     case DW_AT_external:    is_external = form_value.Unsigned() != 0; break;
7047                     case DW_AT_const_value:
7048                         // If we have already found a DW_AT_location attribute, ignore this attribute.
7049                         if (!has_explicit_location)
7050                         {
7051                             location_is_const_value_data = true;
7052                             // The constant value will be either a block, a data value or a string.
7053                             const DataExtractor& debug_info_data = get_debug_info_data();
7054                             if (DWARFFormValue::IsBlockForm(form_value.Form()))
7055                             {
7056                                 // Retrieve the value as a block expression.
7057                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7058                                 uint32_t block_length = form_value.Unsigned();
7059                                 location.CopyOpcodeData(debug_info_data, block_offset, block_length);
7060                             }
7061                             else if (DWARFFormValue::IsDataForm(form_value.Form()))
7062                             {
7063                                 // Retrieve the value as a data expression.
7064                                 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7065                                 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7066                                 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7067                                 location.CopyOpcodeData(debug_info_data, data_offset, data_length);
7068                             }
7069                             else
7070                             {
7071                                 // Retrieve the value as a string expression.
7072                                 if (form_value.Form() == DW_FORM_strp)
7073                                 {
7074                                     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7075                                     uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7076                                     uint32_t data_length = fixed_form_sizes[form_value.Form()];
7077                                     location.CopyOpcodeData(debug_info_data, data_offset, data_length);
7078                                 }
7079                                 else
7080                                 {
7081                                     const char *str = form_value.AsCString(&debug_info_data);
7082                                     uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart();
7083                                     uint32_t string_length = strlen(str) + 1;
7084                                     location.CopyOpcodeData(debug_info_data, string_offset, string_length);
7085                                 }
7086                             }
7087                         }
7088                         break;
7089                     case DW_AT_location:
7090                         {
7091                             location_is_const_value_data = false;
7092                             has_explicit_location = true;
7093                             if (form_value.BlockData())
7094                             {
7095                                 const DataExtractor& debug_info_data = get_debug_info_data();
7096 
7097                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7098                                 uint32_t block_length = form_value.Unsigned();
7099                                 location.CopyOpcodeData(get_debug_info_data(), block_offset, block_length);
7100                             }
7101                             else
7102                             {
7103                                 const DataExtractor&    debug_loc_data = get_debug_loc_data();
7104                                 const dw_offset_t debug_loc_offset = form_value.Unsigned();
7105 
7106                                 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
7107                                 if (loc_list_length > 0)
7108                                 {
7109                                     location.CopyOpcodeData(debug_loc_data, debug_loc_offset, loc_list_length);
7110                                     assert (func_low_pc != LLDB_INVALID_ADDRESS);
7111                                     location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
7112                                 }
7113                             }
7114                         }
7115                         break;
7116 
7117                     case DW_AT_artificial:      is_artificial = form_value.Unsigned() != 0; break;
7118                     case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
7119                     case DW_AT_declaration:
7120                     case DW_AT_description:
7121                     case DW_AT_endianity:
7122                     case DW_AT_segment:
7123                     case DW_AT_start_scope:
7124                     case DW_AT_visibility:
7125                     default:
7126                     case DW_AT_abstract_origin:
7127                     case DW_AT_sibling:
7128                     case DW_AT_specification:
7129                         break;
7130                     }
7131                 }
7132             }
7133 
7134             if (location.IsValid())
7135             {
7136                 ValueType scope = eValueTypeInvalid;
7137 
7138                 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7139                 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7140                 SymbolContextScope * symbol_context_scope = NULL;
7141 
7142                 // DWARF doesn't specify if a DW_TAG_variable is a local, global
7143                 // or static variable, so we have to do a little digging by
7144                 // looking at the location of a varaible to see if it contains
7145                 // a DW_OP_addr opcode _somewhere_ in the definition. I say
7146                 // somewhere because clang likes to combine small global variables
7147                 // into the same symbol and have locations like:
7148                 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
7149                 // So if we don't have a DW_TAG_formal_parameter, we can look at
7150                 // the location to see if it contains a DW_OP_addr opcode, and
7151                 // then we can correctly classify  our variables.
7152                 if (tag == DW_TAG_formal_parameter)
7153                     scope = eValueTypeVariableArgument;
7154                 else
7155                 {
7156                     bool op_error = false;
7157                     // Check if the location has a DW_OP_addr with any address value...
7158                     lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS;
7159                     if (!location_is_const_value_data)
7160                     {
7161                         location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error);
7162                         if (op_error)
7163                         {
7164                             StreamString strm;
7165                             location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL);
7166                             GetObjectFile()->GetModule()->ReportError ("0x%8.8x: %s has an invalid location: %s", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), strm.GetString().c_str());
7167                         }
7168                     }
7169 
7170                     if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
7171                     {
7172                         if (is_external)
7173                             scope = eValueTypeVariableGlobal;
7174                         else
7175                             scope = eValueTypeVariableStatic;
7176 
7177 
7178                         SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile ();
7179 
7180                         if (debug_map_symfile)
7181                         {
7182                             // When leaving the DWARF in the .o files on darwin,
7183                             // when we have a global variable that wasn't initialized,
7184                             // the .o file might not have allocated a virtual
7185                             // address for the global variable. In this case it will
7186                             // have created a symbol for the global variable
7187                             // that is undefined/data and external and the value will
7188                             // be the byte size of the variable. When we do the
7189                             // address map in SymbolFileDWARFDebugMap we rely on
7190                             // having an address, we need to do some magic here
7191                             // so we can get the correct address for our global
7192                             // variable. The address for all of these entries
7193                             // will be zero, and there will be an undefined symbol
7194                             // in this object file, and the executable will have
7195                             // a matching symbol with a good address. So here we
7196                             // dig up the correct address and replace it in the
7197                             // location for the variable, and set the variable's
7198                             // symbol context scope to be that of the main executable
7199                             // so the file address will resolve correctly.
7200                             bool linked_oso_file_addr = false;
7201                             if (is_external && location_DW_OP_addr == 0)
7202                             {
7203 
7204                                 // we have a possible uninitialized extern global
7205                                 ConstString const_name(mangled ? mangled : name);
7206                                 ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile();
7207                                 if (debug_map_objfile)
7208                                 {
7209                                     Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
7210                                     if (debug_map_symtab)
7211                                     {
7212                                         Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
7213                                                                                                                eSymbolTypeData,
7214                                                                                                                Symtab::eDebugYes,
7215                                                                                                                Symtab::eVisibilityExtern);
7216                                         if (exe_symbol)
7217                                         {
7218                                             if (exe_symbol->ValueIsAddress())
7219                                             {
7220                                                 const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress();
7221                                                 if (exe_file_addr != LLDB_INVALID_ADDRESS)
7222                                                 {
7223                                                     if (location.Update_DW_OP_addr (exe_file_addr))
7224                                                     {
7225                                                         linked_oso_file_addr = true;
7226                                                         symbol_context_scope = exe_symbol;
7227                                                     }
7228                                                 }
7229                                             }
7230                                         }
7231                                     }
7232                                 }
7233                             }
7234 
7235                             if (!linked_oso_file_addr)
7236                             {
7237                                 // The DW_OP_addr is not zero, but it contains a .o file address which
7238                                 // needs to be linked up correctly.
7239                                 const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr);
7240                                 if (exe_file_addr != LLDB_INVALID_ADDRESS)
7241                                 {
7242                                     // Update the file address for this variable
7243                                     location.Update_DW_OP_addr (exe_file_addr);
7244                                 }
7245                                 else
7246                                 {
7247                                     // Variable didn't make it into the final executable
7248                                     return var_sp;
7249                                 }
7250                             }
7251                         }
7252                     }
7253                     else
7254                     {
7255                         scope = eValueTypeVariableLocal;
7256                     }
7257                 }
7258 
7259                 if (symbol_context_scope == NULL)
7260                 {
7261                     switch (parent_tag)
7262                     {
7263                     case DW_TAG_subprogram:
7264                     case DW_TAG_inlined_subroutine:
7265                     case DW_TAG_lexical_block:
7266                         if (sc.function)
7267                         {
7268                             symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7269                             if (symbol_context_scope == NULL)
7270                                 symbol_context_scope = sc.function;
7271                         }
7272                         break;
7273 
7274                     default:
7275                         symbol_context_scope = sc.comp_unit;
7276                         break;
7277                     }
7278                 }
7279 
7280                 if (symbol_context_scope)
7281                 {
7282                     var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
7283                                                 name,
7284                                                 mangled,
7285                                                 SymbolFileTypeSP (new SymbolFileType(*this, type_uid)),
7286                                                 scope,
7287                                                 symbol_context_scope,
7288                                                 &decl,
7289                                                 location,
7290                                                 is_external,
7291                                                 is_artificial));
7292 
7293                     var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
7294                 }
7295                 else
7296                 {
7297                     // Not ready to parse this variable yet. It might be a global
7298                     // or static variable that is in a function scope and the function
7299                     // in the symbol context wasn't filled in yet
7300                     return var_sp;
7301                 }
7302             }
7303         }
7304         // Cache var_sp even if NULL (the variable was just a specification or
7305         // was missing vital information to be able to be displayed in the debugger
7306         // (missing location due to optimization, etc)) so we don't re-parse
7307         // this DIE over and over later...
7308         m_die_to_variable_sp[die] = var_sp;
7309     }
7310     return var_sp;
7311 }
7312 
7313 
7314 const DWARFDebugInfoEntry *
7315 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
7316                                                    dw_offset_t spec_block_die_offset,
7317                                                    DWARFCompileUnit **result_die_cu_handle)
7318 {
7319     // Give the concrete function die specified by "func_die_offset", find the
7320     // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7321     // to "spec_block_die_offset"
7322     DWARFDebugInfo* info = DebugInfo();
7323 
7324     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
7325     if (die)
7326     {
7327         assert (*result_die_cu_handle);
7328         return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
7329     }
7330     return NULL;
7331 }
7332 
7333 
7334 const DWARFDebugInfoEntry *
7335 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
7336                                                   const DWARFDebugInfoEntry *die,
7337                                                   dw_offset_t spec_block_die_offset,
7338                                                   DWARFCompileUnit **result_die_cu_handle)
7339 {
7340     if (die)
7341     {
7342         switch (die->Tag())
7343         {
7344         case DW_TAG_subprogram:
7345         case DW_TAG_inlined_subroutine:
7346         case DW_TAG_lexical_block:
7347             {
7348                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
7349                 {
7350                     *result_die_cu_handle = dwarf_cu;
7351                     return die;
7352                 }
7353 
7354                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset)
7355                 {
7356                     *result_die_cu_handle = dwarf_cu;
7357                     return die;
7358                 }
7359             }
7360             break;
7361         }
7362 
7363         // Give the concrete function die specified by "func_die_offset", find the
7364         // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7365         // to "spec_block_die_offset"
7366         for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling())
7367         {
7368             const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
7369                                                                                       child_die,
7370                                                                                       spec_block_die_offset,
7371                                                                                       result_die_cu_handle);
7372             if (result_die)
7373                 return result_die;
7374         }
7375     }
7376 
7377     *result_die_cu_handle = NULL;
7378     return NULL;
7379 }
7380 
7381 size_t
7382 SymbolFileDWARF::ParseVariables
7383 (
7384     const SymbolContext& sc,
7385     DWARFCompileUnit* dwarf_cu,
7386     const lldb::addr_t func_low_pc,
7387     const DWARFDebugInfoEntry *orig_die,
7388     bool parse_siblings,
7389     bool parse_children,
7390     VariableList* cc_variable_list
7391 )
7392 {
7393     if (orig_die == NULL)
7394         return 0;
7395 
7396     VariableListSP variable_list_sp;
7397 
7398     size_t vars_added = 0;
7399     const DWARFDebugInfoEntry *die = orig_die;
7400     while (die != NULL)
7401     {
7402         dw_tag_t tag = die->Tag();
7403 
7404         // Check to see if we have already parsed this variable or constant?
7405         if (m_die_to_variable_sp[die])
7406         {
7407             if (cc_variable_list)
7408                 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
7409         }
7410         else
7411         {
7412             // We haven't already parsed it, lets do that now.
7413             if ((tag == DW_TAG_variable) ||
7414                 (tag == DW_TAG_constant) ||
7415                 (tag == DW_TAG_formal_parameter && sc.function))
7416             {
7417                 if (variable_list_sp.get() == NULL)
7418                 {
7419                     const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
7420                     dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7421                     switch (parent_tag)
7422                     {
7423                         case DW_TAG_compile_unit:
7424                             if (sc.comp_unit != NULL)
7425                             {
7426                                 variable_list_sp = sc.comp_unit->GetVariableList(false);
7427                                 if (variable_list_sp.get() == NULL)
7428                                 {
7429                                     variable_list_sp.reset(new VariableList());
7430                                     sc.comp_unit->SetVariableList(variable_list_sp);
7431                                 }
7432                             }
7433                             else
7434                             {
7435                                 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n",
7436                                                                            MakeUserID(sc_parent_die->GetOffset()),
7437                                                                            DW_TAG_value_to_name (parent_tag),
7438                                                                            MakeUserID(orig_die->GetOffset()),
7439                                                                            DW_TAG_value_to_name (orig_die->Tag()));
7440                             }
7441                             break;
7442 
7443                         case DW_TAG_subprogram:
7444                         case DW_TAG_inlined_subroutine:
7445                         case DW_TAG_lexical_block:
7446                             if (sc.function != NULL)
7447                             {
7448                                 // Check to see if we already have parsed the variables for the given scope
7449 
7450                                 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7451                                 if (block == NULL)
7452                                 {
7453                                     // This must be a specification or abstract origin with
7454                                     // a concrete block couterpart in the current function. We need
7455                                     // to find the concrete block so we can correctly add the
7456                                     // variable to it
7457                                     DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
7458                                     const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
7459                                                                                                                       sc_parent_die->GetOffset(),
7460                                                                                                                       &concrete_block_die_cu);
7461                                     if (concrete_block_die)
7462                                         block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
7463                                 }
7464 
7465                                 if (block != NULL)
7466                                 {
7467                                     const bool can_create = false;
7468                                     variable_list_sp = block->GetBlockVariableList (can_create);
7469                                     if (variable_list_sp.get() == NULL)
7470                                     {
7471                                         variable_list_sp.reset(new VariableList());
7472                                         block->SetVariableList(variable_list_sp);
7473                                     }
7474                                 }
7475                             }
7476                             break;
7477 
7478                         default:
7479                              GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n",
7480                                                                         MakeUserID(orig_die->GetOffset()),
7481                                                                         DW_TAG_value_to_name (orig_die->Tag()));
7482                             break;
7483                     }
7484                 }
7485 
7486                 if (variable_list_sp)
7487                 {
7488                     VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
7489                     if (var_sp)
7490                     {
7491                         variable_list_sp->AddVariableIfUnique (var_sp);
7492                         if (cc_variable_list)
7493                             cc_variable_list->AddVariableIfUnique (var_sp);
7494                         ++vars_added;
7495                     }
7496                 }
7497             }
7498         }
7499 
7500         bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
7501 
7502         if (!skip_children && parse_children && die->HasChildren())
7503         {
7504             vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
7505         }
7506 
7507         if (parse_siblings)
7508             die = die->GetSibling();
7509         else
7510             die = NULL;
7511     }
7512     return vars_added;
7513 }
7514 
7515 //------------------------------------------------------------------
7516 // PluginInterface protocol
7517 //------------------------------------------------------------------
7518 const char *
7519 SymbolFileDWARF::GetPluginName()
7520 {
7521     return "SymbolFileDWARF";
7522 }
7523 
7524 const char *
7525 SymbolFileDWARF::GetShortPluginName()
7526 {
7527     return GetPluginNameStatic();
7528 }
7529 
7530 uint32_t
7531 SymbolFileDWARF::GetPluginVersion()
7532 {
7533     return 1;
7534 }
7535 
7536 void
7537 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
7538 {
7539     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7540     clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7541     if (clang_type)
7542         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7543 }
7544 
7545 void
7546 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
7547 {
7548     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7549     clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7550     if (clang_type)
7551         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7552 }
7553 
7554 void
7555 SymbolFileDWARF::DumpIndexes ()
7556 {
7557     StreamFile s(stdout, false);
7558 
7559     s.Printf ("DWARF index for (%s) '%s/%s':",
7560               GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
7561               GetObjectFile()->GetFileSpec().GetDirectory().AsCString(),
7562               GetObjectFile()->GetFileSpec().GetFilename().AsCString());
7563     s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
7564     s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
7565     s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
7566     s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
7567     s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
7568     s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
7569     s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
7570     s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
7571 }
7572 
7573 void
7574 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
7575                                     const char *name,
7576                                     llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7577 {
7578     DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
7579 
7580     if (iter == m_decl_ctx_to_die.end())
7581         return;
7582 
7583     for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
7584     {
7585         const DWARFDebugInfoEntry *context_die = *pos;
7586 
7587         if (!results)
7588             return;
7589 
7590         DWARFDebugInfo* info = DebugInfo();
7591 
7592         DIEArray die_offsets;
7593 
7594         DWARFCompileUnit* dwarf_cu = NULL;
7595         const DWARFDebugInfoEntry* die = NULL;
7596 
7597         if (m_using_apple_tables)
7598         {
7599             if (m_apple_types_ap.get())
7600                 m_apple_types_ap->FindByName (name, die_offsets);
7601         }
7602         else
7603         {
7604             if (!m_indexed)
7605                 Index ();
7606 
7607             m_type_index.Find (ConstString(name), die_offsets);
7608         }
7609 
7610         const size_t num_matches = die_offsets.size();
7611 
7612         if (num_matches)
7613         {
7614             for (size_t i = 0; i < num_matches; ++i)
7615             {
7616                 const dw_offset_t die_offset = die_offsets[i];
7617                 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
7618 
7619                 if (die->GetParent() != context_die)
7620                     continue;
7621 
7622                 Type *matching_type = ResolveType (dwarf_cu, die);
7623 
7624                 lldb::clang_type_t type = matching_type->GetClangForwardType();
7625                 clang::QualType qual_type = clang::QualType::getFromOpaquePtr(type);
7626 
7627                 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
7628                 {
7629                     clang::TagDecl *tag_decl = tag_type->getDecl();
7630                     results->push_back(tag_decl);
7631                 }
7632                 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
7633                 {
7634                     clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
7635                     results->push_back(typedef_decl);
7636                 }
7637             }
7638         }
7639     }
7640 }
7641 
7642 void
7643 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
7644                                                  const clang::DeclContext *decl_context,
7645                                                  clang::DeclarationName decl_name,
7646                                                  llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7647 {
7648 
7649     switch (decl_context->getDeclKind())
7650     {
7651     case clang::Decl::Namespace:
7652     case clang::Decl::TranslationUnit:
7653         {
7654             SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7655             symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
7656         }
7657         break;
7658     default:
7659         break;
7660     }
7661 }
7662 
7663 bool
7664 SymbolFileDWARF::LayoutRecordType (void *baton,
7665                                    const clang::RecordDecl *record_decl,
7666                                    uint64_t &size,
7667                                    uint64_t &alignment,
7668                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7669                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7670                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7671 {
7672     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7673     return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
7674 }
7675 
7676 
7677 bool
7678 SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
7679                                    uint64_t &bit_size,
7680                                    uint64_t &alignment,
7681                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7682                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7683                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7684 {
7685     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
7686     RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
7687     bool success = false;
7688     base_offsets.clear();
7689     vbase_offsets.clear();
7690     if (pos != m_record_decl_to_layout_map.end())
7691     {
7692         bit_size = pos->second.bit_size;
7693         alignment = pos->second.alignment;
7694         field_offsets.swap(pos->second.field_offsets);
7695         base_offsets.swap (pos->second.base_offsets);
7696         vbase_offsets.swap (pos->second.vbase_offsets);
7697         m_record_decl_to_layout_map.erase(pos);
7698         success = true;
7699     }
7700     else
7701     {
7702         bit_size = 0;
7703         alignment = 0;
7704         field_offsets.clear();
7705     }
7706 
7707     if (log)
7708         GetObjectFile()->GetModule()->LogMessage (log,
7709                                                   "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
7710                                                   record_decl,
7711                                                   bit_size,
7712                                                   alignment,
7713                                                   (uint32_t)field_offsets.size(),
7714                                                   (uint32_t)base_offsets.size(),
7715                                                   (uint32_t)vbase_offsets.size(),
7716                                                   success);
7717     return success;
7718 }
7719 
7720 
7721 SymbolFileDWARFDebugMap *
7722 SymbolFileDWARF::GetDebugMapSymfile ()
7723 {
7724     if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired())
7725     {
7726         lldb::ModuleSP module_sp (m_debug_map_module_wp.lock());
7727         if (module_sp)
7728         {
7729             SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
7730             if (sym_vendor)
7731                 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
7732         }
7733     }
7734     return m_debug_map_symfile;
7735 }
7736 
7737 
7738